fix: Don't allow UIAA stages to be completed if no flow includes them

# Conflicts:
#	Cargo.lock
#	Cargo.toml

.forgejo/actions/create-docker-manifest/action.yml

@@ -44,7 +44,7 @@ runs:
 
     - name: Login to builtin registry
       if: ${{ env.BUILTIN_REGISTRY_ENABLED == 'true' }}
-      uses: docker/login-action@v3
+      uses: docker/login-action@v4
       with:
         registry: ${{ env.BUILTIN_REGISTRY }}
         username: ${{ inputs.registry_user }}
@@ -52,7 +52,7 @@ runs:
 
     - name: Set up Docker Buildx
       if: ${{ env.BUILTIN_REGISTRY_ENABLED == 'true' }}
-      uses: docker/setup-buildx-action@v3
+      uses: docker/setup-buildx-action@v4
       with:
         # Use persistent BuildKit if BUILDKIT_ENDPOINT is set (e.g. tcp://buildkit:8125)
         driver: ${{ env.BUILDKIT_ENDPOINT != '' && 'remote' || 'docker-container' }}
@@ -61,7 +61,7 @@ runs:
     - name: Extract metadata (tags) for Docker
       if: ${{ env.BUILTIN_REGISTRY_ENABLED == 'true' }}
       id: meta
-      uses: docker/metadata-action@v5
+      uses: docker/metadata-action@v6
       with:
         flavor: |
           latest=auto

.forgejo/actions/prepare-docker-build/action.yml

@@ -67,7 +67,7 @@ runs:
       uses: ./.forgejo/actions/rust-toolchain
 
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v3
+      uses: docker/setup-buildx-action@v4
       with:
         # Use persistent BuildKit if BUILDKIT_ENDPOINT is set (e.g. tcp://buildkit:8125)
         driver: ${{ env.BUILDKIT_ENDPOINT != '' && 'remote' || 'docker-container' }}
@@ -79,7 +79,7 @@ runs:
 
     - name: Login to builtin registry
       if: ${{ env.BUILTIN_REGISTRY_ENABLED == 'true' }}
-      uses: docker/login-action@v3
+      uses: docker/login-action@v4
       with:
         registry: ${{ env.BUILTIN_REGISTRY }}
         username: ${{ inputs.registry_user }}
@@ -87,7 +87,7 @@ runs:
 
     - name: Extract metadata (labels, annotations) for Docker
       id: meta
-      uses: docker/metadata-action@v5
+      uses: docker/metadata-action@v6
       with:
         images: ${{ inputs.images }}
         # default labels & annotations: https://github.com/docker/metadata-action/blob/master/src/meta.ts#L509
@@ -152,7 +152,7 @@ runs:
 
     - name: inject cache into docker
       if: ${{ env.BUILDKIT_ENDPOINT == '' }}
-      uses: https://github.com/reproducible-containers/buildkit-cache-dance@v3.3.0
+      uses: https://github.com/reproducible-containers/buildkit-cache-dance@v3.3.2
       with:
         cache-map: |
           {

.forgejo/regsync/regsync.yml

@@ -62,10 +62,6 @@ sync:
     target: registry.gitlab.com/continuwuity/continuwuity
     type: repository
     <<: *tags-main
-  - source: *source
-    target: git.nexy7574.co.uk/mirrored/continuwuity
-    type: repository
-    <<: *tags-releases
   - source: *source
     target: ghcr.io/continuwuity/continuwuity
     type: repository

.forgejo/workflows/release-image.yml

@@ -59,7 +59,7 @@ jobs:
           registry_password: ${{ secrets.BUILTIN_REGISTRY_PASSWORD || secrets.GITHUB_TOKEN }}
       - name: Build and push Docker image by digest
         id: build
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: "docker/Dockerfile"
@@ -146,7 +146,7 @@ jobs:
           registry_password: ${{ secrets.BUILTIN_REGISTRY_PASSWORD || secrets.GITHUB_TOKEN }}
       - name: Build and push max-perf Docker image by digest
         id: build
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: "docker/Dockerfile"

.forgejo/workflows/renovate.yml

@@ -43,7 +43,7 @@ jobs:
     name: Renovate
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/renovatebot/renovate:42.70.2@sha256:3c2ac1b94fa92ef2fa4d1a0493f2c3ba564454720a32fdbcac2db2846ff1ee47
+      image: ghcr.io/renovatebot/renovate:43.59.4@sha256:f951508dea1e7d71cbe6deca298ab0a05488e7631229304813f630cc06010892
       options: --tmpfs /tmp:exec
     steps:
       - name: Checkout

.forgejo/workflows/update-flake-hashes.yml

@@ -23,7 +23,7 @@ jobs:
           persist-credentials: true
           token: ${{ secrets.FORGEJO_TOKEN }}
 
-      - uses: https://github.com/cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15 # v31.9.0
+      - uses: https://github.com/cachix/install-nix-action@19effe9fe722874e6d46dd7182e4b8b7a43c4a99 # v31.10.0
         with:
           nix_path: nixpkgs=channel:nixos-unstable
 

.github/FUNDING.yml

@@ -1,4 +1,4 @@
 github: [JadedBlueEyes, nexy7574, gingershaped]
 custom:
-  - https://ko-fi.com/nexy7574
+  - https://timedout.uk/donate.html
-  - https://ko-fi.com/JadedBlueEyes
+  - https://jade.ellis.link/sponsors

CONTRIBUTING.md

@@ -22,22 +22,18 @@ Continuwuity uses pre-commit hooks to enforce various coding standards and catch
 - Validating YAML, JSON, and TOML files
 - Checking for merge conflicts
 
-You can run these checks locally by installing [prefligit](https://github.com/j178/prefligit):
+You can run these checks locally by installing [prek](https://github.com/j178/prek):
 
 
 ```bash
-# Requires UV: https://docs.astral.sh/uv/getting-started/installation/
+# Install prek using cargo-binstall
-# Mac/linux: curl -LsSf https://astral.sh/uv/install.sh | sh
+cargo binstall prek
-# Windows: powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"
-
-# Install prefligit using cargo-binstall
-cargo binstall prefligit
 
 # Install git hooks to run checks automatically
-prefligit install
+prek install
 
 # Run all checks
-prefligit --all-files
+prek --all-files
 ```
 
 Alternatively, you can use [pre-commit](https://pre-commit.com/):
@@ -54,7 +50,7 @@ pre-commit install
 pre-commit run --all-files
 ```
 
-These same checks are run in CI via the prefligit-checks workflow to ensure consistency. These must pass before the PR is merged.
+These same checks are run in CI via the prek-checks workflow to ensure consistency. These must pass before the PR is merged.
 
 ### Running tests locally
 

Cargo.toml

@@ -12,7 +12,7 @@ license = "Apache-2.0"
 # See also `rust-toolchain.toml`
 readme = "README.md"
 repository = "https://forgejo.ellis.link/continuwuation/continuwuity"
-version = "0.5.6"
+version = "0.5.7-alpha.1"
 
 [workspace.metadata.crane]
 name = "conduwuit"
@@ -99,7 +99,7 @@ features = [
 [workspace.dependencies.axum-extra]
 version = "0.12.0"
 default-features = false
-features = ["typed-header", "tracing"]
+features = ["typed-header", "tracing", "cookie"]
 
 [workspace.dependencies.axum-server]
 version = "0.7.2"
@@ -159,7 +159,7 @@ features = ["raw_value"]
 
 # Used for appservice registration files
 [workspace.dependencies.serde-saphyr]
-version = "0.0.19"
+version = "0.0.21"
 
 # Used to load forbidden room/user regex from config
 [workspace.dependencies.serde_regex]
@@ -344,7 +344,7 @@ version = "0.1.2"
 [workspace.dependencies.ruma]
 git = "https://forgejo.ellis.link/continuwuation/ruwuma"
 #branch = "conduwuit-changes"
-rev = "bb12ed288a31a23aa11b10ba0fad22b7f985eb88"
+rev = "a97b91adcc012ef04991d823b8b5a79c6686ae48"
 features = [
     "compat",
     "rand",
@@ -559,6 +559,19 @@ version = "1.0.1"
 [workspace.dependencies.askama]
 version = "0.15.0"
 
+[workspace.dependencies.lettre]
+version = "0.11.19"
+default-features = false
+features = ["smtp-transport", "pool", "hostname", "builder", "rustls", "aws-lc-rs", "rustls-native-certs", "tokio1", "tokio1-rustls", "tracing", "serde"]
+
+[workspace.dependencies.governor]
+version = "0.10.4"
+default-features = false
+features = ["std"]
+
+[workspace.dependencies.nonzero_ext]
+version = "0.3.0"
+
 #
 # Patches
 #
@@ -919,7 +932,6 @@ fn_to_numeric_cast_any = "warn"
 format_push_string = "warn"
 get_unwrap = "warn"
 impl_trait_in_params = "warn"
-let_underscore_untyped = "warn"
 lossy_float_literal = "warn"
 mem_forget = "warn"
 missing_assert_message = "warn"
@@ -969,3 +981,6 @@ needless_raw_string_hashes = "allow"
 
 # TODO: Enable this lint & fix all instances
 collapsible_if = "allow"
+
+# TODO: break these apart
+cognitive_complexity = "allow"

changelog.d/+1770db35.feature.md

@@ -0,0 +1 @@
+Added support for associating email addresses with accounts, requiring email addresses for registration, and resetting passwords via email. Contributed by @ginger

changelog.d/+6368729a.feature.md

@@ -0,0 +1 @@
+Added support for using an admin command to issue self-service password reset links.

changelog.d/1265.bugfix

@@ -0,0 +1 @@
+Fixed corrupted appservice registrations causing the server to enter a crash loop. Contributed by @nex.

changelog.d/1527.feature.md

@@ -0,0 +1 @@
+Add new config option to allow or disallow search engine indexing through a `<meta ../>` tag. Defaults to blocking indexing (`content="noindex"`). Contributed by @s1lv3r and @ginger.

conduwuit-example.toml

@@ -25,6 +25,10 @@
 #
 # Also see the `[global.well_known]` config section at the very bottom.
 #
+# If `client` is not set under `[global.well_known]`, the server name will
+# be used as the base domain for user-facing links (such as password
+# reset links) created by Continuwuity.
+#
 # Examples of delegation:
 # - https://continuwuity.org/.well-known/matrix/server
 # - https://continuwuity.org/.well-known/matrix/client
@@ -1505,6 +1509,11 @@
 #
 #url_preview_user_agent = "continuwuity/<version> (bot; +https://continuwuity.org)"
 
+# Determines whether audio and video files will be downloaded for URL
+# previews.
+#
+#url_preview_allow_audio_video = false
+
 # List of forbidden room aliases and room IDs as strings of regex
 # patterns.
 #
@@ -1790,6 +1799,11 @@
 #
 #config_reload_signal = true
 
+# Allow search engines and crawlers to index Continuwuity's built-in
+# webpages served under the `/_continuwuity/` prefix.
+#
+#allow_web_indexing = false
+
 [global.tls]
 
 # Path to a valid TLS certificate file.
@@ -2023,3 +2037,41 @@
 # web->synapseHTTPAntispam->authorization
 #
 #secret =
+
+#[global.smtp]
+
+# A `smtp://`` URI which will be used to connect to a mail server.
+# Uncommenting the [global.smtp] group and setting this option enables
+# features which depend on the ability to send email,
+# such as self-service password resets.
+#
+# For most modern mail servers, format the URI like this:
+# 	`smtps://username:password@hostname:port`
+# Note that you will need to URL-encode the username and password. If your
+# username _is_ your email address, you will need to replace the `@` with
+# `%40`.
+#
+# For a guide on the accepted URI syntax, consult Lettre's documentation:
+# https://docs.rs/lettre/latest/lettre/transport/smtp/struct.AsyncSmtpTransport.html#method.from_url
+#
+#connection_uri =
+
+# The outgoing address which will be used for sending emails.
+#
+# For a syntax guide, see https://datatracker.ietf.org/doc/html/rfc2822#section-3.4
+#
+# ...or if you don't want to read the RFC, for some reason:
+# - `Name <address@domain.org>` to specify a sender name
+# - `address@domain.org` to not use a name
+#
+#sender =
+
+# Whether to require that users provide an email address when they
+# register.
+#
+#require_email_for_registration = false
+
+# Whether to require that users who register with a registration token
+# provide an email address.
+#
+#require_email_for_token_registration = false

docker/Dockerfile

@@ -10,7 +10,7 @@ RUN rm -f /etc/apt/apt.conf.d/docker-clean
 
 # Match Rustc version as close as possible
 # rustc -vV
-ARG LLVM_VERSION=20
+ARG LLVM_VERSION=21
 # ENV RUSTUP_TOOLCHAIN=${RUST_VERSION}
 
 # Install repo tools
@@ -48,7 +48,7 @@ EOF
 
 # Developer tool versions
 # renovate: datasource=github-releases depName=cargo-bins/cargo-binstall
-ENV BINSTALL_VERSION=1.17.6
+ENV BINSTALL_VERSION=1.17.7
 # renovate: datasource=github-releases depName=psastras/sbom-rs
 ENV CARGO_SBOM_VERSION=0.9.1
 # renovate: datasource=crate depName=lddtree

docker/musl.Dockerfile

@@ -18,7 +18,7 @@ RUN --mount=type=cache,target=/etc/apk/cache apk add \
 
 # Developer tool versions
 # renovate: datasource=github-releases depName=cargo-bins/cargo-binstall
-ENV BINSTALL_VERSION=1.17.6
+ENV BINSTALL_VERSION=1.17.7
 # renovate: datasource=github-releases depName=psastras/sbom-rs
 ENV CARGO_SBOM_VERSION=0.9.1
 # renovate: datasource=crate depName=lddtree

docs/_meta.json

@@ -69,6 +69,11 @@
         "label": "Configuration Reference",
         "name": "/reference/config"
     },
+    {
+        "type": "file",
+        "label": "Environment Variables",
+        "name": "/reference/environment-variables"
+    },
     {
         "type": "dir",
         "label": "Admin Command Reference",

docs/advanced/delegation.mdx

@@ -109,9 +109,6 @@ Restart Continuwuity and your reverse proxy. Once that's done, visit these route
 {
   "m.homeserver": {
     "base_url": "https://matrix.example.com/"
-  },
-  "org.matrix.msc3575.proxy": {
-    "url": "https://matrix.example.com/"
   }
 }
 ```

docs/deploying/docker-compose.for-traefik.yml

@@ -6,9 +6,9 @@ services:
     ### then you are ready to go.
     image: forgejo.ellis.link/continuwuation/continuwuity:latest
     restart: unless-stopped
+    command: /sbin/conduwuit
     volumes:
       - db:/var/lib/continuwuity
-      - /etc/resolv.conf:/etc/resolv.conf:ro # Use the host's DNS resolver rather than Docker's.
       #- ./continuwuity.toml:/etc/continuwuity.toml
     networks:
       - proxy

docs/deploying/docker-compose.with-caddy.yml

@@ -23,6 +23,7 @@ services:
         ### then you are ready to go.
         image: forgejo.ellis.link/continuwuation/continuwuity:latest
         restart: unless-stopped
+        command: /sbin/conduwuit
         volumes:
             - db:/var/lib/continuwuity
             - /etc/resolv.conf:/etc/resolv.conf:ro # Use the host's DNS resolver rather than Docker's.

docs/deploying/docker-compose.with-traefik.yml

@@ -6,6 +6,7 @@ services:
     ### then you are ready to go.
     image: forgejo.ellis.link/continuwuation/continuwuity:latest
     restart: unless-stopped
+    command: /sbin/conduwuit
     volumes:
       - db:/var/lib/continuwuity
       - /etc/resolv.conf:/etc/resolv.conf:ro # Use the host's DNS resolver rather than Docker's.

docs/deploying/docker-compose.yml

@@ -6,6 +6,7 @@ services:
         ### then you are ready to go.
         image: forgejo.ellis.link/continuwuation/continuwuity:latest
         restart: unless-stopped
+        command: /sbin/conduwuit
         ports:
             - 8448:6167
         volumes:

docs/deploying/docker.mdx

@@ -2,28 +2,26 @@
 
 ## Docker
 
-To run Continuwuity with Docker, you can either build the image yourself or pull it
+To run Continuwuity with Docker, you can either build the image yourself or pull
-from a registry.
+it from a registry.
 
 ### Use a registry
 
-OCI images for Continuwuity are available in the registries listed below.
+Available OCI images:
 
-| Registry        | Image                                                           | Notes                  |
+| Registry         | Image                                                                                                                                                       | Notes                                                                        |
-| --------------- | --------------------------------------------------------------- | -----------------------|
+| ---------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------- |
-| Forgejo Registry| [forgejo.ellis.link/continuwuation/continuwuity:latest](https://forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/latest)     | Latest tagged image.   |
+| Forgejo Registry | [forgejo.ellis.link/continuwuation/continuwuity:latest](https://forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/latest)                 | Latest tagged image.                                                         |
-| Forgejo Registry| [forgejo.ellis.link/continuwuation/continuwuity:main](https://forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/main)       | Main branch image.     |
+| Forgejo Registry | [forgejo.ellis.link/continuwuation/continuwuity:main](https://forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/main)                     | Main branch image.                                                           |
-| Forgejo Registry| [forgejo.ellis.link/continuwuation/continuwuity:latest-maxperf](https://forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/latest-maxperf) | [Performance optimised version.](./generic.mdx#performance-optimised-builds) |
+| Forgejo Registry | [forgejo.ellis.link/continuwuation/continuwuity:latest-maxperf](https://forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/latest-maxperf) | [Performance optimised version.](./generic.mdx#performance-optimised-builds) |
-| Forgejo Registry| [forgejo.ellis.link/continuwuation/continuwuity:main-maxperf](https://forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/main-maxperf)   | [Performance optimised version.](./generic.mdx#performance-optimised-builds) |
+| Forgejo Registry | [forgejo.ellis.link/continuwuation/continuwuity:main-maxperf](https://forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/main-maxperf)     | [Performance optimised version.](./generic.mdx#performance-optimised-builds) |
 
-Use
+**Example:**
 
 ```bash
-docker image pull $LINK
+docker image pull forgejo.ellis.link/continuwuation/continuwuity:main-maxperf
 ```
 
-to pull it to your machine.
-
 #### Mirrors
 
 Images are mirrored to multiple locations automatically, on a schedule:
@@ -33,39 +31,146 @@ Images are mirrored to multiple locations automatically, on a schedule:
 - `registry.gitlab.com/continuwuity/continuwuity`
 - `git.nexy7574.co.uk/mirrored/continuwuity` (releases only, no `main`)
 
-### Run
+### Quick Run
 
-When you have the image, you can simply run it with
+Get a working Continuwuity server with an admin user in four steps:
+
+#### Prerequisites
+
+Continuwuity requires HTTPS for Matrix federation. You'll need:
+
+- A domain name pointing to your server
+- A reverse proxy with SSL/TLS certificates (Traefik, Caddy, nginx, etc.)
+
+See [Docker Compose](#docker-compose) for complete examples.
+
+#### Environment Variables
+
+- `CONTINUWUITY_SERVER_NAME` - Your Matrix server's domain name
+- `CONTINUWUITY_DATABASE_PATH` - Where to store your database (must match the
+  volume mount)
+- `CONTINUWUITY_ADDRESS` - Bind address (use `0.0.0.0` to listen on all
+  interfaces)
+- `CONTINUWUITY_ALLOW_REGISTRATION` - Set to `false` to disable registration, or
+  use with `CONTINUWUITY_REGISTRATION_TOKEN` to require a token (see
+  [reference](../reference/environment-variables.mdx#registration--user-configuration)
+  for details)
+
+See the
+[Environment Variables Reference](../reference/environment-variables.mdx) for
+more configuration options.
+
+#### 1. Pull the image
 
 ```bash
-docker run -d -p 8448:6167 \
+docker pull forgejo.ellis.link/continuwuation/continuwuity:latest
-    -v db:/var/lib/continuwuity/ \
-    -e CONTINUWUITY_SERVER_NAME="your.server.name" \
-    -e CONTINUWUITY_ALLOW_REGISTRATION=false \
-    --name continuwuity $LINK
 ```
 
-or you can use [Docker Compose](#docker-compose).
+#### 2. Start the server with initial admin user
 
-The `-d` flag lets the container run in detached mode. You may supply an
+```bash
-optional `continuwuity.toml` config file, the example config can be found
+docker run -d \
-[here](../reference/config.mdx). You can pass in different env vars to
+  -p 6167:6167 \
-change config values on the fly. You can even configure Continuwuity completely by
+  -v continuwuity_db:/var/lib/continuwuity \
-using env vars. For an overview of possible values, please take a look at the
+  -e CONTINUWUITY_SERVER_NAME="matrix.example.com" \
-<a href="/examples/docker-compose.yml" target="_blank">`docker-compose.yml`</a> file.
+  -e CONTINUWUITY_DATABASE_PATH="/var/lib/continuwuity" \
+  -e CONTINUWUITY_ADDRESS="0.0.0.0" \
+  -e CONTINUWUITY_ALLOW_REGISTRATION="false" \
+  --name continuwuity \
+  forgejo.ellis.link/continuwuation/continuwuity:latest \
+  /sbin/conduwuit --execute "users create-user admin"
+```
 
-If you just want to test Continuwuity for a short time, you can use the `--rm`
+Replace `matrix.example.com` with your actual server name and `admin` with
-flag, which cleans up everything related to your container after you stop
+your preferred username.
-it.
+
+#### 3. Get your admin password
+
+```bash
+docker logs continuwuity 2>&1 | grep "Created user"
+```
+
+You'll see output like:
+
+```
+Created user with user_id: @admin:matrix.example.com and password: `[auto-generated-password]`
+```
+
+#### 4. Configure your reverse proxy
+
+Configure your reverse proxy to forward HTTPS traffic to Continuwuity. See
+[Docker Compose](#docker-compose) for examples.
+
+Once configured, log in with any Matrix client using `@admin:matrix.example.com`
+and the generated password. You'll automatically be invited to the admin room
+where you can manage your server.
 
 ### Docker Compose
 
-If the `docker run` command is not suitable for you or your setup, you can also use one
+Docker Compose is the recommended deployment method. These examples include
-of the provided `docker-compose` files.
+reverse proxy configurations for Matrix federation.
 
-Depending on your proxy setup, you can use one of the following files:
+#### Matrix Federation Requirements
 
-### For existing Traefik setup
+For Matrix federation to work, you need to serve `.well-known/matrix/client` and
+`.well-known/matrix/server` endpoints. You can achieve this either by:
+
+1. **Using a well-known service** - The compose files below include an nginx
+   container to serve these files
+2. **Using Continuwuity's built-in delegation** (easier for Traefik) - Configure
+   delegation files in your config, then proxy `/.well-known/matrix/*` to
+   Continuwuity
+
+**Traefik example using built-in delegation:**
+
+```yaml
+labels:
+  traefik.http.routers.continuwuity.rule: >-
+    (Host(`matrix.example.com`) ||
+     (Host(`example.com`) && PathPrefix(`/.well-known/matrix`)))
+```
+
+This routes your Matrix domain and well-known paths to Continuwuity.
+
+#### Creating Your First Admin User
+
+Add the `--execute` command to create an admin user on first startup. In your
+compose file, add under the `continuwuity` service:
+
+```yaml
+services:
+    continuwuity:
+        image: forgejo.ellis.link/continuwuation/continuwuity:latest
+        command: /sbin/conduwuit --execute "users create-user admin"
+        # ... rest of configuration
+```
+
+Then retrieve the auto-generated password:
+
+```bash
+docker compose logs continuwuity | grep "Created user"
+```
+
+#### Choose Your Reverse Proxy
+
+Select the compose file that matches your setup:
+
+:::note DNS Performance
+Docker's default DNS resolver can cause performance issues with Matrix
+federation. If you experience slow federation or DNS timeouts, you may need to
+use your host's DNS resolver instead. Add this volume mount to the
+`continuwuity` service:
+
+```yaml
+volumes:
+  - /etc/resolv.conf:/etc/resolv.conf:ro
+```
+
+See [Troubleshooting - DNS Issues](../troubleshooting.mdx#potential-dns-issues-when-using-docker)
+for more details and alternative solutions.
+:::
+
+##### For existing Traefik setup
 
 <details>
 <summary>docker-compose.for-traefik.yml</summary>
@@ -76,7 +181,7 @@ Depending on your proxy setup, you can use one of the following files:
 
 </details>
 
-### With Traefik included
+##### With Traefik included
 
 <details>
 <summary>docker-compose.with-traefik.yml</summary>
@@ -87,7 +192,7 @@ Depending on your proxy setup, you can use one of the following files:
 
 </details>
 
-### With Caddy Docker Proxy
+##### With Caddy Docker Proxy
 
 <details>
 <summary>docker-compose.with-caddy.yml</summary>
@@ -98,9 +203,15 @@ Replace all `example.com` placeholders with your own domain.
 
 ```
 
+If you don't already have a network for Caddy to monitor, create one first:
+
+```bash
+docker network create caddy
+```
+
 </details>
 
-### For other reverse proxies
+##### For other reverse proxies
 
 <details>
 <summary>docker-compose.yml</summary>
@@ -111,7 +222,7 @@ Replace all `example.com` placeholders with your own domain.
 
 </details>
 
-### Override file
+##### Override file for customisation
 
 <details>
 <summary>docker-compose.override.yml</summary>
@@ -122,98 +233,24 @@ Replace all `example.com` placeholders with your own domain.
 
 </details>
 
-When picking the Traefik-related compose file, rename it to
+#### Starting Your Server
-`docker-compose.yml`, and rename the override file to
-`docker-compose.override.yml`. Edit the latter with the values you want for your
-server.
 
-When picking the `caddy-docker-proxy` compose file, it's important to first
+1. Choose your compose file and rename it to `docker-compose.yml`
-create the `caddy` network before spinning up the containers:
+2. If using the override file, rename it to `docker-compose.override.yml` and
-
+   edit your values
-```bash
+3. Start the server:
-docker network create caddy
-```
-
-After that, you can rename it to `docker-compose.yml` and spin up the
-containers!
-
-Additional info about deploying Continuwuity can be found [here](generic.mdx).
-
-### Build
-
-Official Continuwuity images are built using **Docker Buildx** and the Dockerfile found at [`docker/Dockerfile`][dockerfile-path]. This approach uses common Docker tooling and enables efficient multi-platform builds.
-
-The resulting images are widely compatible with Docker and other container runtimes like Podman or containerd.
-
-The images *do not contain a shell*. They contain only the Continuwuity binary, required libraries, TLS certificates, and metadata.
-
-<details>
-<summary>Click to view the Dockerfile</summary>
-
-You can also <a href="https://forgejo.ellis.link/continuwuation/continuwuation/src/branch/main/docker/Dockerfile" target="_blank">view the Dockerfile on Forgejo</a>.
-
-```dockerfile file="../../docker/Dockerfile"
-
-```
-
-</details>
-
-To build an image locally using Docker Buildx, you can typically run a command like:
-
-```bash
-# Build for the current platform and load into the local Docker daemon
-docker buildx build --load --tag continuwuity:latest -f docker/Dockerfile .
-
-# Example: Build for specific platforms and push to a registry.
-# docker buildx build --platform linux/amd64,linux/arm64 --tag registry.io/org/continuwuity:latest -f docker/Dockerfile . --push
-
-# Example: Build binary optimised for the current CPU (standard release profile)
-# docker buildx build --load \
-#   --tag continuwuity:latest \
-#   --build-arg TARGET_CPU=native \
-#   -f docker/Dockerfile .
-
-# Example: Build maxperf variant (release-max-perf profile with LTO)
-# Optimised for runtime performance and smaller binary size, but requires longer build time
-# docker buildx build --load \
-#   --tag continuwuity:latest-maxperf \
-#   --build-arg TARGET_CPU=native \
-#   --build-arg RUST_PROFILE=release-max-perf \
-#   -f docker/Dockerfile .
-```
-
-Refer to the Docker Buildx documentation for more advanced build options.
-
-[dockerfile-path]: https://forgejo.ellis.link/continuwuation/continuwuation/src/branch/main/docker/Dockerfile
-
-### Run
-
-If you have already built the image or want to use one from the registries, you
-can start the container and everything else in the compose file in detached
-mode with:
 
 ```bash
 docker compose up -d
 ```
 
-> **Note:** Don't forget to modify and adjust the compose file to your needs.
+See the [generic deployment guide](generic.mdx) for more deployment options.
 
-### Use Traefik as Proxy
+### Building Custom Images
 
-As a container user, you probably know about Traefik. It is an easy-to-use
+For information on building your own Continuwuity Docker images, see the
-reverse proxy for making containerized apps and services available through the
+[Building Docker Images](../development/index.mdx#building-docker-images)
-web. With the Traefik-related docker-compose files provided above, it is equally easy
+section in the development documentation.
-to deploy and use Continuwuity, with a small caveat. If you have already looked at
-the files, you should have seen the `well-known` service, which is the
-small caveat. Traefik is simply a proxy and load balancer and cannot
-serve any kind of content. For Continuwuity to federate, we need to either
-expose ports `443` and `8448` or serve two endpoints: `.well-known/matrix/client`
-and `.well-known/matrix/server`.
-
-With the service `well-known`, we use a single `nginx` container that serves
-those two files.
-
-Alternatively, you can use Continuwuity's built-in delegation file capability. Set up the delegation files in the configuration file, and then proxy paths under `/.well-known/matrix` to continuwuity. For example, the label ``traefik.http.routers.continuwuity.rule=(Host(`matrix.ellis.link`) || (Host(`ellis.link`) && PathPrefix(`/.well-known/matrix`)))`` does this for the domain `ellis.link`.
 
 ## Voice communication
 

docs/deploying/freebsd.mdx

@@ -1,7 +1,7 @@
 # Continuwuity for FreeBSD
 
-Continuwuity currently does not provide FreeBSD builds or FreeBSD packaging. However, Continuwuity does build and work on FreeBSD using the system-provided RocksDB.
+Continuwuity doesn't provide official FreeBSD packages; however, a community-maintained set of packages is available on [Forgejo](https://forgejo.ellis.link/katie/continuwuity-bsd). Note that these are provided as standalone packages and are not part of a FreeBSD package repository (yet), so updates need to be downloaded and installed manually.
 
-Contributions to get Continuwuity packaged for FreeBSD are welcome.
+Please see the installation instructions in that repository. Direct any questions to its issue tracker or to [@katie:kat5.dev](https://matrix.to/#/@katie:kat5.dev).
 
-Please join our [Continuwuity BSD](https://matrix.to/#/%23bsd:continuwuity.org) community room.
+For general BSD support, please join our [Continuwuity BSD](https://matrix.to/#/%23bsd:continuwuity.org) community room.

docs/deploying/kubernetes.mdx

@@ -39,6 +39,7 @@ spec:
         - name: continuwuity
           # use a sha hash <3
           image: forgejo.ellis.link/continuwuation/continuwuity:latest
+          command: ["/sbin/conduwuit"]
           imagePullPolicy: IfNotPresent
           ports:
             - name: http

docs/development/index.mdx

@@ -2,7 +2,8 @@
 
 Information about developing the project. If you are only interested in using
 it, you can safely ignore this page. If you plan on contributing, see the
-[contributor's guide](./contributing.mdx) and [code style guide](./code_style.mdx).
+[contributor's guide](./contributing.mdx) and
+[code style guide](./code_style.mdx).
 
 ## Continuwuity project layout
 
@@ -12,86 +13,98 @@ members are under `src/`. The workspace definition is at the top level / root
 `Cargo.toml`.
 
 The crate names are generally self-explanatory:
+
 - `admin` is the admin room
 - `api` is the HTTP API, Matrix C-S and S-S endpoints, etc
-- `core` is core Continuwuity functionality like config loading, error definitions,
+- `core` is core Continuwuity functionality like config loading, error
-global utilities, logging infrastructure, etc
+  definitions, global utilities, logging infrastructure, etc
-- `database` is RocksDB methods, helpers, RocksDB config, and general database definitions,
+- `database` is RocksDB methods, helpers, RocksDB config, and general database
-utilities, or functions
+  definitions, utilities, or functions
-- `macros` are Continuwuity Rust [macros][macros] like general helper macros, logging
+- `macros` are Continuwuity Rust [macros][macros] like general helper macros,
-and error handling macros, and [syn][syn] and [procedural macros][proc-macro]
+  logging and error handling macros, and [syn][syn] and [procedural
-used for admin room commands and others
+  macros][proc-macro] used for admin room commands and others
 - `main` is the "primary" sub-crate. This is where the `main()` function lives,
-tokio worker and async initialisation, Sentry initialisation, [clap][clap] init,
+  tokio worker and async initialisation, Sentry initialisation, [clap][clap]
-and signal handling. If you are adding new [Rust features][features], they *must*
+  init, and signal handling. If you are adding new [Rust features][features],
-go here.
+  they _must_ go here.
-- `router` is the webserver and request handling bits, using axum, tower, tower-http,
+- `router` is the webserver and request handling bits, using axum, tower,
-hyper, etc, and the [global server state][state] to access `services`.
+  tower-http, hyper, etc, and the [global server state][state] to access
+  `services`.
 - `service` is the high-level database definitions and functions for data,
-outbound/sending code, and other business logic such as media fetching.
+  outbound/sending code, and other business logic such as media fetching.
 
-It is highly unlikely you will ever need to add a new workspace member, but
+It is highly unlikely you will ever need to add a new workspace member, but if
-if you truly find yourself needing to, we recommend reaching out to us in
+you truly find yourself needing to, we recommend reaching out to us in the
-the Matrix room for discussions about it beforehand.
+Matrix room for discussions about it beforehand.
 
 The primary inspiration for this design was apart of hot reloadable development,
-to support "Continuwuity as a library" where specific parts can simply be swapped out.
+to support "Continuwuity as a library" where specific parts can simply be
-There is evidence Conduit wanted to go this route too as `axum` is technically an
+swapped out. There is evidence Conduit wanted to go this route too as `axum` is
-optional feature in Conduit, and can be compiled without the binary or axum library
+technically an optional feature in Conduit, and can be compiled without the
-for handling inbound web requests; but it was never completed or worked.
+binary or axum library for handling inbound web requests; but it was never
+completed or worked.
 
-See the Rust documentation on [Workspaces][workspaces] for general questions
+See the Rust documentation on [Workspaces][workspaces] for general questions and
-and information on Cargo workspaces.
+information on Cargo workspaces.
 
 ## Adding compile-time [features][features]
 
-If you'd like to add a compile-time feature, you must first define it in
+If you'd like to add a compile-time feature, you must first define it in the
-the `main` workspace crate located in `src/main/Cargo.toml`. The feature must
+`main` workspace crate located in `src/main/Cargo.toml`. The feature must enable
-enable a feature in the other workspace crate(s) you intend to use it in. Then
+a feature in the other workspace crate(s) you intend to use it in. Then the said
-the said workspace crate(s) must define the feature there in its `Cargo.toml`.
+workspace crate(s) must define the feature there in its `Cargo.toml`.
 
-So, if this is adding a feature to the API such as `woof`, you define the feature
+So, if this is adding a feature to the API such as `woof`, you define the
-in the `api` crate's `Cargo.toml` as `woof = []`. The feature definition in `main`'s
+feature in the `api` crate's `Cargo.toml` as `woof = []`. The feature definition
-`Cargo.toml` will be `woof = ["conduwuit-api/woof"]`.
+in `main`'s `Cargo.toml` will be `woof = ["conduwuit-api/woof"]`.
 
-The rationale for this is due to Rust / Cargo not supporting
+The rationale for this is due to Rust / Cargo not supporting ["workspace level
-["workspace level features"][9], we must make a choice of; either scattering
+features"][9], we must make a choice of; either scattering features all over the
-features all over the workspace crates, making it difficult for anyone to add
+workspace crates, making it difficult for anyone to add or remove default
-or remove default features; or define all the features in one central workspace
+features; or define all the features in one central workspace crate that
-crate that propagate down/up to the other workspace crates. It is a Cargo pitfall,
+propagate down/up to the other workspace crates. It is a Cargo pitfall, and we'd
-and we'd like to see better developer UX in Rust's Workspaces.
+like to see better developer UX in Rust's Workspaces.
 
-Additionally, the definition of one single place makes "feature collection" in our
+Additionally, the definition of one single place makes "feature collection" in
-Nix flake a million times easier instead of collecting and deduping them all from
+our Nix flake a million times easier instead of collecting and deduping them all
-searching in all the workspace crates' `Cargo.toml`s. Though we wouldn't need to
+from searching in all the workspace crates' `Cargo.toml`s. Though we wouldn't
-do this if Rust supported workspace-level features to begin with.
+need to do this if Rust supported workspace-level features to begin with.
 
 ## List of forked dependencies
 
-During Continuwuity (and prior projects) development, we have had to fork some dependencies to support our use-cases.
+During Continuwuity (and prior projects) development, we have had to fork some
-These forks exist for various reasons including features that upstream projects won't accept,
+dependencies to support our use-cases. These forks exist for various reasons
-faster-paced development, Continuwuity-specific usecases, or lack of time to upstream changes.
+including features that upstream projects won't accept, faster-paced
+development, Continuwuity-specific usecases, or lack of time to upstream
+changes.
 
-All forked dependencies are maintained under the [continuwuation organization on Forgejo](https://forgejo.ellis.link/continuwuation):
+All forked dependencies are maintained under the
+[continuwuation organization on Forgejo](https://forgejo.ellis.link/continuwuation):
 
-- [ruwuma][continuwuation-ruwuma] - Fork of [ruma/ruma][ruma] with various performance improvements, more features and better client/server interop
+- [ruwuma][continuwuation-ruwuma] - Fork of [ruma/ruma][ruma] with various
-- [rocksdb][continuwuation-rocksdb] - Fork of [facebook/rocksdb][rocksdb] via [`@zaidoon1`][8] with liburing build fixes and GCC debug build fixes
+  performance improvements, more features and better client/server interop
-- [jemallocator][continuwuation-jemallocator] - Fork of [tikv/jemallocator][jemallocator] fixing musl builds, suspicious code,
+- [rocksdb][continuwuation-rocksdb] - Fork of [facebook/rocksdb][rocksdb] via
-  and adding support for redzones in Valgrind
+  [`@zaidoon1`][8] with liburing build fixes and GCC debug build fixes
-- [rustyline-async][continuwuation-rustyline-async] - Fork of [zyansheep/rustyline-async][rustyline-async] with tab completion callback
+- [jemallocator][continuwuation-jemallocator] - Fork of
-  and `CTRL+\` signal quit event for Continuwuity console CLI
+  [tikv/jemallocator][jemallocator] fixing musl builds, suspicious code, and
-- [rust-rocksdb][continuwuation-rust-rocksdb] - Fork of [rust-rocksdb/rust-rocksdb][rust-rocksdb] fixing musl build issues,
+  adding support for redzones in Valgrind
-  removing unnecessary `gtest` include, and using our RocksDB and jemallocator forks
+- [rustyline-async][continuwuation-rustyline-async] - Fork of
-- [tracing][continuwuation-tracing] - Fork of [tokio-rs/tracing][tracing] implementing `Clone` for `EnvFilter` to
+  [zyansheep/rustyline-async][rustyline-async] with tab completion callback and
-  support dynamically changing tracing environments
+  `CTRL+\` signal quit event for Continuwuity console CLI
+- [rust-rocksdb][continuwuation-rust-rocksdb] - Fork of
+  [rust-rocksdb/rust-rocksdb][rust-rocksdb] fixing musl build issues, removing
+  unnecessary `gtest` include, and using our RocksDB and jemallocator forks
+- [tracing][continuwuation-tracing] - Fork of [tokio-rs/tracing][tracing]
+  implementing `Clone` for `EnvFilter` to support dynamically changing tracing
+  environments
 
 ## Debugging with `tokio-console`
 
 [`tokio-console`][7] can be a useful tool for debugging and profiling. To make a
-`tokio-console`-enabled build of Continuwuity, enable the `tokio_console` feature,
+`tokio-console`-enabled build of Continuwuity, enable the `tokio_console`
-disable the default `release_max_log_level` feature, and set the `--cfg
+feature, disable the default `release_max_log_level` feature, and set the
-tokio_unstable` flag to enable experimental tokio APIs. A build might look like
+`--cfg tokio_unstable` flag to enable experimental tokio APIs. A build might
-this:
+look like this:
 
 ```bash
 RUSTFLAGS="--cfg tokio_unstable" cargo +nightly build \
@@ -100,34 +113,84 @@ RUSTFLAGS="--cfg tokio_unstable" cargo +nightly build \
     --features=systemd,element_hacks,gzip_compression,brotli_compression,zstd_compression,tokio_console
 ```
 
-You will also need to enable the `tokio_console` config option in Continuwuity when
+You will also need to enable the `tokio_console` config option in Continuwuity
-starting it. This was due to tokio-console causing gradual memory leak/usage
+when starting it. This was due to tokio-console causing gradual memory
-if left enabled.
+leak/usage if left enabled.
 
 ## Building Docker Images
 
-To build a Docker image for Continuwuity, use the standard Docker build command:
+Official Continuwuity images are built using **Docker Buildx** and the
+Dockerfile found at [`docker/Dockerfile`][dockerfile-path].
+
+The images are compatible with Docker and other container runtimes like Podman
+or containerd.
+
+The images _do not contain a shell_. They contain only the Continuwuity binary,
+required libraries, TLS certificates, and metadata.
+
+<details>
+<summary>Click to view the Dockerfile</summary>
+
+You can also
+
+<a
+    href="<https://forgejo.ellis.link/continuwuation/continuwuation/src/branch/main/docker/Dockerfile>"
+    target="_blank"
+>
+    view the Dockerfile on Forgejo
+</a>
+.
+
+```dockerfile file="../../docker/Dockerfile"
 
-```bash
-docker build -f docker/Dockerfile .
 ```
 
-The image can be cross-compiled for different architectures.
+</details>
 
+### Building Locally
+
+To build an image locally using Docker Buildx:
+
+```bash
+# Build for the current platform and load into the local Docker daemon
+docker buildx build --load --tag continuwuity:latest -f docker/Dockerfile .
+
+# Example: Build for specific platforms and push to a registry
+# docker buildx build --platform linux/amd64,linux/arm64 --tag registry.io/org/continuwuity:latest -f docker/Dockerfile . --push
+
+# Example: Build binary optimised for the current CPU (standard release profile)
+# docker buildx build --load \
+#   --tag continuwuity:latest \
+#   --build-arg TARGET_CPU=native \
+#   -f docker/Dockerfile .
+
+# Example: Build maxperf variant (release-max-perf profile with LTO)
+# docker buildx build --load \
+#   --tag continuwuity:latest-maxperf \
+#   --build-arg TARGET_CPU=native \
+#   --build-arg RUST_PROFILE=release-max-perf \
+#   -f docker/Dockerfile .
+```
+
+Refer to the Docker Buildx documentation for more advanced build options.
+
+[dockerfile-path]:
+    https://forgejo.ellis.link/continuwuation/continuwuation/src/branch/main/docker/Dockerfile
 [continuwuation-ruwuma]: https://forgejo.ellis.link/continuwuation/ruwuma
 [continuwuation-rocksdb]: https://forgejo.ellis.link/continuwuation/rocksdb
-[continuwuation-jemallocator]: https://forgejo.ellis.link/continuwuation/jemallocator
+[continuwuation-jemallocator]:
-[continuwuation-rustyline-async]: https://forgejo.ellis.link/continuwuation/rustyline-async
+    https://forgejo.ellis.link/continuwuation/jemallocator
-[continuwuation-rust-rocksdb]: https://forgejo.ellis.link/continuwuation/rust-rocksdb
+[continuwuation-rustyline-async]:
+    https://forgejo.ellis.link/continuwuation/rustyline-async
+[continuwuation-rust-rocksdb]:
+    https://forgejo.ellis.link/continuwuation/rust-rocksdb
 [continuwuation-tracing]: https://forgejo.ellis.link/continuwuation/tracing
-
 [ruma]: https://github.com/ruma/ruma/
 [rocksdb]: https://github.com/facebook/rocksdb/
 [jemallocator]: https://github.com/tikv/jemallocator/
 [rustyline-async]: https://github.com/zyansheep/rustyline-async/
 [rust-rocksdb]: https://github.com/rust-rocksdb/rust-rocksdb/
 [tracing]: https://github.com/tokio-rs/tracing/
-
 [7]: https://docs.rs/tokio-console/latest/tokio_console/
 [8]: https://github.com/zaidoon1/
 [9]: https://github.com/rust-lang/cargo/issues/12162

docs/public/.well-known/matrix/client

@@ -1 +1 @@
-{"m.homeserver":{"base_url": "https://matrix.continuwuity.org"},"org.matrix.msc3575.proxy":{"url": "https://matrix.continuwuity.org"},"org.matrix.msc4143.rtc_foci":[{"type":"livekit","livekit_service_url":"https://livekit.ellis.link"}]}
+{"m.homeserver":{"base_url": "https://matrix.continuwuity.org"},"org.matrix.msc4143.rtc_foci":[{"type":"livekit","livekit_service_url":"https://livekit.ellis.link"}]}

docs/reference/_meta.json

@@ -4,6 +4,11 @@
         "name": "config",
         "label": "Configuration"
     },
+    {
+        "type": "file",
+        "name": "environment-variables",
+        "label": "Environment Variables"
+    },
     {
         "type": "file",
         "name": "admin",

docs/reference/admin/debug.md

@@ -130,6 +130,10 @@ Trim memory usage
 
 List database files
 
+## `!admin debug send-test-email`
+
+Send a test email to the invoking admin's email address
+
 ## `!admin debug tester`
 
 Developer test stubs

docs/reference/admin/users.md

@@ -12,6 +12,24 @@ Create a new user
 
 Reset user password
 
+## `!admin users issue-password-reset-link`
+
+Issue a self-service password reset link for a user
+
+## `!admin users get-email`
+
+Get a user's associated email address
+
+## `!admin users get-user-by-email`
+
+Get the user with the given email address
+
+## `!admin users change-email`
+
+Update or remove a user's email address.
+
+If `email` is not supplied, the user's existing address will be removed.
+
 ## `!admin users deactivate`
 
 Deactivate a user

docs/reference/environment-variables.mdx

@@ -0,0 +1,281 @@
+# Environment Variables
+
+Continuwuity can be configured entirely through environment variables, making it
+ideal for containerised deployments and infrastructure-as-code scenarios.
+
+This is a convenience reference and may not be exhaustive. The
+[Configuration Reference](./config.mdx) is the primary source for all
+configuration options.
+
+## Prefix System
+
+Continuwuity supports three environment variable prefixes for backwards
+compatibility:
+
+- `CONTINUWUITY_*` (current, recommended)
+- `CONDUWUIT_*` (compatibility)
+- `CONDUIT_*` (legacy)
+
+All three prefixes work identically. Use double underscores (`__`) to represent
+nested configuration sections from the TOML config.
+
+**Examples:**
+
+```bash
+# Simple top-level config
+CONTINUWUITY_SERVER_NAME="matrix.example.com"
+CONTINUWUITY_PORT="8008"
+
+# Nested config sections use double underscores
+# This maps to [database] section in TOML
+CONTINUWUITY_DATABASE__PATH="/var/lib/continuwuity"
+
+# This maps to [tls] section in TOML
+CONTINUWUITY_TLS__CERTS="/path/to/cert.pem"
+```
+
+## Configuration File Override
+
+You can specify a custom configuration file path:
+
+- `CONTINUWUITY_CONFIG` - Path to continuwuity.toml (current)
+- `CONDUWUIT_CONFIG` - Path to config file (compatibility)
+- `CONDUIT_CONFIG` - Path to config file (legacy)
+
+## Essential Variables
+
+These are the minimum variables needed for a working deployment:
+
+| Variable                     | Description                        | Default                |
+| ---------------------------- | ---------------------------------- | ---------------------- |
+| `CONTINUWUITY_SERVER_NAME`   | Your Matrix server's domain name   | Required               |
+| `CONTINUWUITY_DATABASE_PATH` | Path to RocksDB database directory | `/var/lib/conduwuit`   |
+| `CONTINUWUITY_ADDRESS`       | IP address to bind to              | `["127.0.0.1", "::1"]` |
+| `CONTINUWUITY_PORT`          | Port to listen on                  | `8008`                 |
+
+## Network Configuration
+
+| Variable                         | Description                                     | Default                |
+| -------------------------------- | ----------------------------------------------- | ---------------------- |
+| `CONTINUWUITY_ADDRESS`           | Bind address (use `0.0.0.0` for all interfaces) | `["127.0.0.1", "::1"]` |
+| `CONTINUWUITY_PORT`              | HTTP port                                       | `8008`                 |
+| `CONTINUWUITY_UNIX_SOCKET_PATH`  | UNIX socket path (alternative to TCP)           | -                      |
+| `CONTINUWUITY_UNIX_SOCKET_PERMS` | Socket permissions (octal)                      | `660`                  |
+
+## Database Configuration
+
+| Variable                                   | Description                 | Default              |
+| ------------------------------------------ | --------------------------- | -------------------- |
+| `CONTINUWUITY_DATABASE_PATH`               | RocksDB data directory      | `/var/lib/conduwuit` |
+| `CONTINUWUITY_DATABASE_BACKUP_PATH`        | Backup directory            | -                    |
+| `CONTINUWUITY_DATABASE_BACKUPS_TO_KEEP`    | Number of backups to retain | `1`                  |
+| `CONTINUWUITY_DB_CACHE_CAPACITY_MB`        | Database read cache (MB)    | -                    |
+| `CONTINUWUITY_DB_WRITE_BUFFER_CAPACITY_MB` | Write cache (MB)            | -                    |
+
+## Cache Configuration
+
+| Variable                                 | Description              |
+| ---------------------------------------- | ------------------------ |
+| `CONTINUWUITY_CACHE_CAPACITY_MODIFIER`   | LRU cache multiplier     |
+| `CONTINUWUITY_PDU_CACHE_CAPACITY`        | PDU cache entries        |
+| `CONTINUWUITY_AUTH_CHAIN_CACHE_CAPACITY` | Auth chain cache entries |
+
+## DNS Configuration
+
+Configure DNS resolution behaviour for federation and external requests.
+
+| Variable                             | Description                  | Default  |
+| ------------------------------------ | ---------------------------- | -------- |
+| `CONTINUWUITY_DNS_CACHE_ENTRIES`     | Max DNS cache entries        | `32768`  |
+| `CONTINUWUITY_DNS_MIN_TTL`           | Minimum cache TTL (seconds)  | `10800`  |
+| `CONTINUWUITY_DNS_MIN_TTL_NXDOMAIN`  | NXDOMAIN cache TTL (seconds) | `259200` |
+| `CONTINUWUITY_DNS_ATTEMPTS`          | Retry attempts               | -        |
+| `CONTINUWUITY_DNS_TIMEOUT`           | Query timeout (seconds)      | -        |
+| `CONTINUWUITY_DNS_TCP_FALLBACK`      | Allow TCP fallback           | -        |
+| `CONTINUWUITY_QUERY_ALL_NAMESERVERS` | Query all nameservers        | -        |
+| `CONTINUWUITY_QUERY_OVER_TCP_ONLY`   | TCP-only queries             | -        |
+
+## Request Configuration
+
+| Variable                             | Description                   |
+| ------------------------------------ | ----------------------------- |
+| `CONTINUWUITY_MAX_REQUEST_SIZE`      | Max HTTP request size (bytes) |
+| `CONTINUWUITY_REQUEST_CONN_TIMEOUT`  | Connection timeout (seconds)  |
+| `CONTINUWUITY_REQUEST_TIMEOUT`       | Overall request timeout       |
+| `CONTINUWUITY_REQUEST_TOTAL_TIMEOUT` | Total timeout                 |
+| `CONTINUWUITY_REQUEST_IDLE_TIMEOUT`  | Idle timeout                  |
+| `CONTINUWUITY_REQUEST_IDLE_PER_HOST` | Idle connections per host     |
+
+## Federation Configuration
+
+Control how your server federates with other Matrix servers.
+
+| Variable                                       | Description                   | Default |
+| ---------------------------------------------- | ----------------------------- | ------- |
+| `CONTINUWUITY_ALLOW_FEDERATION`                | Enable federation             | `true`  |
+| `CONTINUWUITY_FEDERATION_LOOPBACK`             | Allow loopback federation     | -       |
+| `CONTINUWUITY_FEDERATION_CONN_TIMEOUT`         | Connection timeout            | -       |
+| `CONTINUWUITY_FEDERATION_TIMEOUT`              | Request timeout               | -       |
+| `CONTINUWUITY_FEDERATION_IDLE_TIMEOUT`         | Idle timeout                  | -       |
+| `CONTINUWUITY_FEDERATION_IDLE_PER_HOST`        | Idle connections per host     | -       |
+| `CONTINUWUITY_TRUSTED_SERVERS`                 | JSON array of trusted servers | -       |
+| `CONTINUWUITY_QUERY_TRUSTED_KEY_SERVERS_FIRST` | Query trusted first           | -       |
+| `CONTINUWUITY_ONLY_QUERY_TRUSTED_KEY_SERVERS`  | Only query trusted            | -       |
+
+**Example:**
+
+```bash
+# Trust matrix.org for key verification
+CONTINUWUITY_TRUSTED_SERVERS='["matrix.org"]'
+```
+
+## Registration & User Configuration
+
+Control user registration and account creation behaviour.
+
+| Variable                                   | Description           | Default |
+| ------------------------------------------ | --------------------- | ------- |
+| `CONTINUWUITY_ALLOW_REGISTRATION`          | Enable registration   | `true`  |
+| `CONTINUWUITY_REGISTRATION_TOKEN`          | Token requirement     | -       |
+| `CONTINUWUITY_SUSPEND_ON_REGISTER`         | Suspend new accounts  | -       |
+| `CONTINUWUITY_NEW_USER_DISPLAYNAME_SUFFIX` | Display name suffix   | 🏳️‍⚧️      |
+| `CONTINUWUITY_RECAPTCHA_SITE_KEY`          | reCAPTCHA site key    | -       |
+| `CONTINUWUITY_RECAPTCHA_PRIVATE_SITE_KEY`  | reCAPTCHA private key | -       |
+
+**Example:**
+
+```bash
+# Disable open registration
+CONTINUWUITY_ALLOW_REGISTRATION="false"
+
+# Require a registration token
+CONTINUWUITY_REGISTRATION_TOKEN="your_secret_token_here"
+```
+
+## Feature Configuration
+
+| Variable                                                   | Description                | Default |
+| ---------------------------------------------------------- | -------------------------- | ------- |
+| `CONTINUWUITY_ALLOW_ENCRYPTION`                            | Enable E2EE                | `true`  |
+| `CONTINUWUITY_ALLOW_ROOM_CREATION`                         | Enable room creation       | -       |
+| `CONTINUWUITY_ALLOW_UNSTABLE_ROOM_VERSIONS`                | Allow unstable versions    | -       |
+| `CONTINUWUITY_DEFAULT_ROOM_VERSION`                        | Default room version       | `v11`   |
+| `CONTINUWUITY_REQUIRE_AUTH_FOR_PROFILE_REQUESTS`           | Auth for profiles          | -       |
+| `CONTINUWUITY_ALLOW_PUBLIC_ROOM_DIRECTORY_OVER_FEDERATION` | Federate directory         | -       |
+| `CONTINUWUITY_ALLOW_PUBLIC_ROOM_DIRECTORY_WITHOUT_AUTH`    | Unauth directory           | -       |
+| `CONTINUWUITY_ALLOW_DEVICE_NAME_FEDERATION`                | Device names in federation | -       |
+
+## TLS Configuration
+
+Built-in TLS support is primarily for testing. **For production deployments,
+especially when federating on the internet, use a reverse proxy** (Traefik,
+Caddy, nginx) to handle TLS termination.
+
+| Variable                          | Description               |
+| --------------------------------- | ------------------------- |
+| `CONTINUWUITY_TLS__CERTS`         | TLS certificate file path |
+| `CONTINUWUITY_TLS__KEY`           | TLS private key path      |
+| `CONTINUWUITY_TLS__DUAL_PROTOCOL` | Support TLS 1.2 + 1.3     |
+
+**Example (testing only):**
+
+```bash
+CONTINUWUITY_TLS__CERTS="/etc/letsencrypt/live/matrix.example.com/fullchain.pem"
+CONTINUWUITY_TLS__KEY="/etc/letsencrypt/live/matrix.example.com/privkey.pem"
+```
+
+## Logging Configuration
+
+Control log output format and verbosity.
+
+| Variable                       | Description        | Default |
+| ------------------------------ | ------------------ | ------- |
+| `CONTINUWUITY_LOG`             | Log filter level   | -       |
+| `CONTINUWUITY_LOG_COLORS`      | ANSI colours       | `true`  |
+| `CONTINUWUITY_LOG_SPAN_EVENTS` | Log span events    | `none`  |
+| `CONTINUWUITY_LOG_THREAD_IDS`  | Include thread IDs | -       |
+
+**Examples:**
+
+```bash
+# Set log level to info
+CONTINUWUITY_LOG="info"
+
+# Enable debug logging for specific modules
+CONTINUWUITY_LOG="warn,continuwuity::api=debug"
+
+# Disable colours for log aggregation
+CONTINUWUITY_LOG_COLORS="false"
+```
+
+## Observability Configuration
+
+| Variable                                 | Description           |
+| ---------------------------------------- | --------------------- |
+| `CONTINUWUITY_ALLOW_OTLP`                | Enable OpenTelemetry  |
+| `CONTINUWUITY_OTLP_FILTER`               | OTLP filter level     |
+| `CONTINUWUITY_OTLP_PROTOCOL`             | Protocol (http/grpc)  |
+| `CONTINUWUITY_TRACING_FLAME`             | Enable flame graphs   |
+| `CONTINUWUITY_TRACING_FLAME_FILTER`      | Flame graph filter    |
+| `CONTINUWUITY_TRACING_FLAME_OUTPUT_PATH` | Output directory      |
+| `CONTINUWUITY_SENTRY`                    | Enable Sentry         |
+| `CONTINUWUITY_SENTRY_ENDPOINT`           | Sentry DSN            |
+| `CONTINUWUITY_SENTRY_SEND_SERVER_NAME`   | Include server name   |
+| `CONTINUWUITY_SENTRY_TRACES_SAMPLE_RATE` | Sample rate (0.0-1.0) |
+
+## Admin Configuration
+
+Configure admin users and automated command execution.
+
+| Variable                                   | Description                      | Default           |
+| ------------------------------------------ | -------------------------------- | ----------------- |
+| `CONTINUWUITY_ADMINS_LIST`                 | JSON array of admin user IDs     | -                 |
+| `CONTINUWUITY_ADMINS_FROM_ROOM`            | Derive admins from room          | -                 |
+| `CONTINUWUITY_ADMIN_ESCAPE_COMMANDS`       | Allow `\` prefix in public rooms | -                 |
+| `CONTINUWUITY_ADMIN_CONSOLE_AUTOMATIC`     | Auto-activate console            | -                 |
+| `CONTINUWUITY_ADMIN_EXECUTE`               | JSON array of startup commands   | -                 |
+| `CONTINUWUITY_ADMIN_EXECUTE_ERRORS_IGNORE` | Ignore command errors            | -                 |
+| `CONTINUWUITY_ADMIN_SIGNAL_EXECUTE`        | Commands on SIGUSR2              | -                 |
+| `CONTINUWUITY_ADMIN_ROOM_TAG`              | Admin room tag                   | `m.server_notice` |
+
+**Examples:**
+
+```bash
+# Create admin user on startup
+CONTINUWUITY_ADMIN_EXECUTE='["users create-user admin", "users make-user-admin admin"]'
+
+# Specify admin users directly
+CONTINUWUITY_ADMINS_LIST='["@alice:example.com", "@bob:example.com"]'
+```
+
+## Media & URL Preview Configuration
+
+| Variable                                             | Description        |
+| ---------------------------------------------------- | ------------------ |
+| `CONTINUWUITY_URL_PREVIEW_BOUND_INTERFACE`           | Bind interface     |
+| `CONTINUWUITY_URL_PREVIEW_DOMAIN_CONTAINS_ALLOWLIST` | Domain allowlist   |
+| `CONTINUWUITY_URL_PREVIEW_DOMAIN_EXPLICIT_ALLOWLIST` | Explicit allowlist |
+| `CONTINUWUITY_URL_PREVIEW_DOMAIN_EXPLICIT_DENYLIST`  | Explicit denylist  |
+| `CONTINUWUITY_URL_PREVIEW_MAX_SPIDER_SIZE`           | Max fetch size     |
+| `CONTINUWUITY_URL_PREVIEW_TIMEOUT`                   | Fetch timeout      |
+| `CONTINUWUITY_IP_RANGE_DENYLIST`                     | IP range denylist  |
+
+## Tokio Runtime Configuration
+
+These can be set as environment variables or CLI arguments:
+
+| Variable                                  | Description                |
+| ----------------------------------------- | -------------------------- |
+| `TOKIO_WORKER_THREADS`                    | Worker thread count        |
+| `TOKIO_GLOBAL_QUEUE_INTERVAL`             | Global queue interval      |
+| `TOKIO_EVENT_INTERVAL`                    | Event interval             |
+| `TOKIO_MAX_IO_EVENTS_PER_TICK`            | Max I/O events per tick    |
+| `CONTINUWUITY_RUNTIME_HISTOGRAM_INTERVAL` | Histogram bucket size (μs) |
+| `CONTINUWUITY_RUNTIME_HISTOGRAM_BUCKETS`  | Bucket count               |
+| `CONTINUWUITY_RUNTIME_WORKER_AFFINITY`    | Enable worker affinity     |
+
+## See Also
+
+- [Configuration Reference](./config.mdx) - Complete TOML configuration
+  documentation
+- [Admin Commands](./admin/) - Admin command reference

docs/troubleshooting.mdx

@@ -6,7 +6,7 @@ misconfigurations to cause issues, particularly with networking and permissions.
 Please check that your issues are not due to problems with your Docker setup.
 :::
 
-## Continuwuity and Matrix issues
+## Continuwuity issues
 
 ### Slow joins to rooms
 
@@ -23,6 +23,16 @@ which is a longstanding bug with synchronizing room joins to clients. In this si
 the bug caused your homeserver to forget to tell your client. **To fix this, clear your client's cache.** Both Element and Cinny
 have a button to clear their cache in the "About" section of their settings.
 
+### Configuration not working as expected
+
+Sometimes you can make a mistake in your configuration that
+means things don't get passed to Continuwuity correctly.
+This is particularly easy to do with environment variables.
+To check what configuration Continuwuity actually sees, you can
+use the `!admin server show-config` command in your admin room.
+Beware that this prints out any secrets in your configuration,
+so you might want to delete the result afterwards!
+
 ### Lost access to admin room
 
 You can reinvite yourself to the admin room through the following methods:
@@ -33,17 +43,7 @@ argument once to invite yourslf to the admin room on startup
 - Or specify the `emergency_password` config option to allow you to temporarily
 log into the server account (`@conduit`) from a web client
 
-## General potential issues
+## DNS issues
-
-### Configuration not working as expected
-
-Sometimes you can make a mistake in your configuration that
-means things don't get passed to Continuwuity correctly.
-This is particularly easy to do with environment variables.
-To check what configuration Continuwuity actually sees, you can
-use the `!admin server show-config` command in your admin room.
-Beware that this prints out any secrets in your configuration,
-so you might want to delete the result afterwards!
 
 ### Potential DNS issues when using Docker
 

flake.lock

@@ -3,11 +3,11 @@
     "advisory-db": {
       "flake": false,
       "locked": {
-        "lastModified": 1766324728,
+        "lastModified": 1773786698,
-        "narHash": "sha256-9C+WyE5U3y5w4WQXxmb0ylRyMMsPyzxielWXSHrcDpE=",
+        "narHash": "sha256-o/J7ZculgwSs1L4H4UFlFZENOXTJzq1X0n71x6oNNvY=",
         "owner": "rustsec",
         "repo": "advisory-db",
-        "rev": "c88b88c62bda077be8aa621d4e89d8701e39cb5d",
+        "rev": "99e9de91bb8b61f06ef234ff84e11f758ecd5384",
         "type": "github"
       },
       "original": {
@@ -18,11 +18,11 @@
     },
     "crane": {
       "locked": {
-        "lastModified": 1766194365,
+        "lastModified": 1773189535,
-        "narHash": "sha256-4AFsUZ0kl6MXSm4BaQgItD0VGlEKR3iq7gIaL7TjBvc=",
+        "narHash": "sha256-E1G/Or6MWeP+L6mpQ0iTFLpzSzlpGrITfU2220Gq47g=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "7d8ec2c71771937ab99790b45e6d9b93d15d9379",
+        "rev": "6fa2fb4cf4a89ba49fc9dd5a3eb6cde99d388269",
         "type": "github"
       },
       "original": {
@@ -39,11 +39,11 @@
         "rust-analyzer-src": "rust-analyzer-src"
       },
       "locked": {
-        "lastModified": 1766299592,
+        "lastModified": 1773732206,
-        "narHash": "sha256-7u+q5hexu2eAxL2VjhskHvaUKg+GexmelIR2ve9Nbb4=",
+        "narHash": "sha256-HKibxaUXyWd4Hs+ZUnwo6XslvaFqFqJh66uL9tphU4Q=",
         "owner": "nix-community",
         "repo": "fenix",
-        "rev": "381579dee168d5ced412e2990e9637ecc7cf1c5d",
+        "rev": "0aa13c1b54063a8d8679b28a5cd357ba98f4a56b",
         "type": "github"
       },
       "original": {
@@ -55,11 +55,11 @@
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1765121682,
+        "lastModified": 1767039857,
-        "narHash": "sha256-4VBOP18BFeiPkyhy9o4ssBNQEvfvv1kXkasAYd0+rrA=",
+        "narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "65f23138d8d09a92e30f1e5c87611b23ef451bf3",
+        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
         "type": "github"
       },
       "original": {
@@ -74,11 +74,11 @@
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1765835352,
+        "lastModified": 1772408722,
-        "narHash": "sha256-XswHlK/Qtjasvhd1nOa1e8MgZ8GS//jBoTqWtrS1Giw=",
+        "narHash": "sha256-rHuJtdcOjK7rAHpHphUb1iCvgkU3GpfvicLMwwnfMT0=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "a34fae9c08a15ad73f295041fec82323541400a9",
+        "rev": "f20dc5d9b8027381c474144ecabc9034d6a839a3",
         "type": "github"
       },
       "original": {
@@ -89,11 +89,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1766070988,
+        "lastModified": 1773734432,
-        "narHash": "sha256-G/WVghka6c4bAzMhTwT2vjLccg/awmHkdKSd2JrycLc=",
+        "narHash": "sha256-IF5ppUWh6gHGHYDbtVUyhwy/i7D261P7fWD1bPefOsw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "c6245e83d836d0433170a16eb185cefe0572f8b8",
+        "rev": "cda48547b432e8d3b18b4180ba07473762ec8558",
         "type": "github"
       },
       "original": {
@@ -105,11 +105,11 @@
     },
     "nixpkgs-lib": {
       "locked": {
-        "lastModified": 1765674936,
+        "lastModified": 1772328832,
-        "narHash": "sha256-k00uTP4JNfmejrCLJOwdObYC9jHRrr/5M/a/8L2EIdo=",
+        "narHash": "sha256-e+/T/pmEkLP6BHhYjx6GmwP5ivonQQn0bJdH9YrRB+Q=",
         "owner": "nix-community",
         "repo": "nixpkgs.lib",
-        "rev": "2075416fcb47225d9b68ac469a5c4801a9c4dd85",
+        "rev": "c185c7a5e5dd8f9add5b2f8ebeff00888b070742",
         "type": "github"
       },
       "original": {
@@ -132,11 +132,11 @@
     "rust-analyzer-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1766253897,
+        "lastModified": 1773697963,
-        "narHash": "sha256-ChK07B1aOlJ4QzWXpJo+y8IGAxp1V9yQ2YloJ+RgHRw=",
+        "narHash": "sha256-xdKI77It9PM6eNrCcDZsnP4SKulZwk8VkDgBRVMnCb8=",
         "owner": "rust-lang",
         "repo": "rust-analyzer",
-        "rev": "765b7bdb432b3740f2d564afccfae831d5a972e4",
+        "rev": "2993637174252ff60a582fd1f55b9ab52c39db6d",
         "type": "github"
       },
       "original": {
@@ -153,11 +153,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1766000401,
+        "lastModified": 1773297127,
-        "narHash": "sha256-+cqN4PJz9y0JQXfAK5J1drd0U05D5fcAGhzhfVrDlsI=",
+        "narHash": "sha256-6E/yhXP7Oy/NbXtf1ktzmU8SdVqJQ09HC/48ebEGBpk=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "42d96e75aa56a3f70cab7e7dc4a32868db28e8fd",
+        "rev": "71b125cd05fbfd78cab3e070b73544abe24c5016",
         "type": "github"
       },
       "original": {

nix/packages/rust.nix

@@ -15,7 +15,7 @@
             file = inputs.self + "/rust-toolchain.toml";
 
             # See also `rust-toolchain.toml`
-            sha256 = "sha256-SJwZ8g0zF2WrKDVmHrVG3pD2RGoQeo24MEXnNx5FyuI=";
+            sha256 = "sha256-sqSWJDUxc+zaz1nBWMAJKTAGBuGWP25GCftIOlCEAtA=";
           };
         in
         {

package-lock.json

@@ -16,21 +16,21 @@
       }
     },
     "node_modules/@emnapi/core": {
-      "version": "1.8.1",
+      "version": "1.9.0",
-      "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.8.1.tgz",
+      "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.9.0.tgz",
-      "integrity": "sha512-AvT9QFpxK0Zd8J0jopedNm+w/2fIzvtPKPjqyw9jwvBaReTTqPBk9Hixaz7KbjimP+QNz605/XnjFcDAL2pqBg==",
+      "integrity": "sha512-0DQ98G9ZQZOxfUcQn1waV2yS8aWdZ6kJMbYCJB3oUBecjWYO1fqJ+a1DRfPF3O5JEkwqwP1A9QEN/9mYm2Yd0w==",
       "dev": true,
       "license": "MIT",
       "optional": true,
       "dependencies": {
-        "@emnapi/wasi-threads": "1.1.0",
+        "@emnapi/wasi-threads": "1.2.0",
         "tslib": "^2.4.0"
       }
     },
     "node_modules/@emnapi/runtime": {
-      "version": "1.8.1",
+      "version": "1.9.0",
-      "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.8.1.tgz",
+      "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.9.0.tgz",
-      "integrity": "sha512-mehfKSMWjjNol8659Z8KxEMrdSJDDot5SXMq00dM8BN4o+CLNXQ0xH2V7EchNHV4RmbZLmmPdEaXZc5H2FXmDg==",
+      "integrity": "sha512-QN75eB0IH2ywSpRpNddCRfQIhmJYBCJ1x5Lb3IscKAL8bMnVAKnRg8dCoXbHzVLLH7P38N2Z3mtulB7W0J0FKw==",
       "dev": true,
       "license": "MIT",
       "optional": true,
@@ -39,9 +39,9 @@
       }
     },
     "node_modules/@emnapi/wasi-threads": {
-      "version": "1.1.0",
+      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/@emnapi/wasi-threads/-/wasi-threads-1.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/@emnapi/wasi-threads/-/wasi-threads-1.2.0.tgz",
-      "integrity": "sha512-WI0DdZ8xFSbgMjR1sFsKABJ/C5OnRrjT06JXbZKexJGrDuPTzZdDYfFlsgcCXCyf+suG5QU2e/y1Wo2V/OapLQ==",
+      "integrity": "sha512-N10dEJNSsUx41Z6pZsXU8FjPjpBEplgH24sfkmITrBED1/U2Esum9F3lfLrMjKHHjmi557zQn7kR9R+XWXu5Rg==",
       "dev": true,
       "license": "MIT",
       "optional": true,
@@ -144,17 +144,22 @@
       }
     },
     "node_modules/@rsbuild/plugin-react": {
-      "version": "1.4.5",
+      "version": "1.4.6",
-      "resolved": "https://registry.npmjs.org/@rsbuild/plugin-react/-/plugin-react-1.4.5.tgz",
+      "resolved": "https://registry.npmjs.org/@rsbuild/plugin-react/-/plugin-react-1.4.6.tgz",
-      "integrity": "sha512-eS2sXCedgGA/7bLu8yVtn48eE/GyPbXx4Q7OcutB01IQ1D2y8WSMBys4nwfrecy19utvw4NPn4gYDy52316+vg==",
+      "integrity": "sha512-LAT6xHlEyZKA0VjF/ph5d50iyG+WSmBx+7g98HNZUwb94VeeTMZFB8qVptTkbIRMss3BNKOXmHOu71Lhsh9oEw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@rspack/plugin-react-refresh": "^1.6.0",
+        "@rspack/plugin-react-refresh": "^1.6.1",
         "react-refresh": "^0.18.0"
       },
       "peerDependencies": {
         "@rsbuild/core": "^1.0.0 || ^2.0.0-0"
+      },
+      "peerDependenciesMeta": {
+        "@rsbuild/core": {
+          "optional": true
+        }
       }
     },
     "node_modules/@rspack/binding": {
@@ -342,9 +347,9 @@
       }
     },
     "node_modules/@rspack/plugin-react-refresh": {
-      "version": "1.6.0",
+      "version": "1.6.1",
-      "resolved": "https://registry.npmjs.org/@rspack/plugin-react-refresh/-/plugin-react-refresh-1.6.0.tgz",
+      "resolved": "https://registry.npmjs.org/@rspack/plugin-react-refresh/-/plugin-react-refresh-1.6.1.tgz",
-      "integrity": "sha512-OO53gkrte/Ty4iRXxxM6lkwPGxsSsupFKdrPFnjwFIYrPvFLjeolAl5cTx+FzO5hYygJiGnw7iEKTmD+ptxqDA==",
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       "dev": true,
       "license": "MIT"
     },
@@ -1591,9 +1613,9 @@
       }
     },
     "node_modules/inline-style-parser": {
-      "version": "0.2.6",
+      "version": "0.2.7",
-      "resolved": "https://registry.npmjs.org/inline-style-parser/-/inline-style-parser-0.2.6.tgz",
+      "resolved": "https://registry.npmjs.org/inline-style-parser/-/inline-style-parser-0.2.7.tgz",
-      "integrity": "sha512-gtGXVaBdl5mAes3rPcMedEBm12ibjt1kDMFfheul1wUAOVEJW60voNdMVzVkfLN06O7ZaD/rxhfKgtlgtTbMjg==",
+      "integrity": "sha512-Nb2ctOyNR8DqQoR0OwRG95uNWIC0C1lCgf5Naz5H6Ji72KZ8OcFZLz2P5sNgwlyoJ8Yif11oMuYs5pBQa86csA==",
       "dev": true,
       "license": "MIT"
     },
@@ -1811,9 +1833,9 @@
       }
     },
     "node_modules/mdast-util-from-markdown": {
-      "version": "2.0.2",
+      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/mdast-util-from-markdown/-/mdast-util-from-markdown-2.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/mdast-util-from-markdown/-/mdast-util-from-markdown-2.0.3.tgz",
-      "integrity": "sha512-uZhTV/8NBuw0WHkPTrCqDOl0zVe1BIng5ZtHoDk49ME1qqcjYmmLmOf0gELgcRMxN4w2iuIeVso5/6QymSrgmA==",
+      "integrity": "sha512-W4mAWTvSlKvf8L6J+VN9yLSqQ9AOAAvHuoDAmPkz4dHf553m5gVj2ejadHJhoJmcmxEnOv6Pa8XJhpxE93kb8Q==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -2174,6 +2196,80 @@
         "micromark-util-types": "^2.0.0"
       }
     },
+    "node_modules/micromark-extension-cjk-friendly": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/micromark-extension-cjk-friendly/-/micromark-extension-cjk-friendly-2.0.1.tgz",
+      "integrity": "sha512-OkzoYVTL1ChbvQ8Cc1ayTIz7paFQz8iS9oIYmewncweUSwmWR+hkJF9spJ1lxB90XldJl26A1F4IkPOKS3bDXw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "devlop": "^1.1.0",
+        "micromark-extension-cjk-friendly-util": "3.0.1",
+        "micromark-util-chunked": "^2.0.1",
+        "micromark-util-resolve-all": "^2.0.1",
+        "micromark-util-symbol": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "micromark": "^4.0.0",
+        "micromark-util-types": "^2.0.0"
+      },
+      "peerDependenciesMeta": {
+        "micromark-util-types": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/micromark-extension-cjk-friendly-gfm-strikethrough": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/micromark-extension-cjk-friendly-gfm-strikethrough/-/micromark-extension-cjk-friendly-gfm-strikethrough-2.0.1.tgz",
+      "integrity": "sha512-wVC0zwjJNqQeX+bb07YTPu/CvSAyCTafyYb7sMhX1r62/Lw5M/df3JyYaANyp8g15c1ypJRFSsookTqA1IDsUg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "devlop": "^1.1.0",
+        "get-east-asian-width": "^1.4.0",
+        "micromark-extension-cjk-friendly-util": "3.0.1",
+        "micromark-util-character": "^2.1.1",
+        "micromark-util-chunked": "^2.0.1",
+        "micromark-util-resolve-all": "^2.0.1",
+        "micromark-util-symbol": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "micromark": "^4.0.0",
+        "micromark-util-types": "^2.0.0"
+      },
+      "peerDependenciesMeta": {
+        "micromark-util-types": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/micromark-extension-cjk-friendly-util": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/micromark-extension-cjk-friendly-util/-/micromark-extension-cjk-friendly-util-3.0.1.tgz",
+      "integrity": "sha512-GcbXqTTHOsiZHyF753oIddP/J2eH8j9zpyQPhkof6B2JNxfEJabnQqxbCgzJNuNes0Y2jTNJ3LiYPSXr6eJA8w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "get-east-asian-width": "^1.4.0",
+        "micromark-util-character": "^2.1.1",
+        "micromark-util-symbol": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependenciesMeta": {
+        "micromark-util-types": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/micromark-extension-gfm": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/micromark-extension-gfm/-/micromark-extension-gfm-3.0.0.tgz",
@@ -2887,14 +2983,14 @@
       "license": "MIT"
     },
     "node_modules/oniguruma-to-es": {
-      "version": "4.3.4",
+      "version": "4.3.5",
-      "resolved": "https://registry.npmjs.org/oniguruma-to-es/-/oniguruma-to-es-4.3.4.tgz",
+      "resolved": "https://registry.npmjs.org/oniguruma-to-es/-/oniguruma-to-es-4.3.5.tgz",
-      "integrity": "sha512-3VhUGN3w2eYxnTzHn+ikMI+fp/96KoRSVK9/kMTcFqj1NRDh2IhQCKvYxDnWePKRXY/AqH+Fuiyb7VHSzBjHfA==",
+      "integrity": "sha512-Zjygswjpsewa0NLTsiizVuMQZbp0MDyM6lIt66OxsF21npUDlzpHi1Mgb/qhQdkb+dWFTzJmFbEWdvZgRho8eQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "oniguruma-parser": "^0.12.1",
-        "regex": "^6.0.1",
+        "regex": "^6.1.0",
         "regex-recursion": "^6.0.2"
       }
     },
@@ -2938,19 +3034,6 @@
         "url": "https://github.com/inikulin/parse5?sponsor=1"
       }
     },
-    "node_modules/parse5/node_modules/entities": {
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
-      "integrity": "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==",
-      "dev": true,
-      "license": "BSD-2-Clause",
-      "engines": {
-        "node": ">=0.12"
-      },
-      "funding": {
-        "url": "https://github.com/fb55/entities?sponsor=1"
-      }
-    },
     "node_modules/picocolors": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -3253,6 +3336,50 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/remark-cjk-friendly": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/remark-cjk-friendly/-/remark-cjk-friendly-2.0.1.tgz",
+      "integrity": "sha512-6WwkoQyZf/4j5k53zdFYrR8Ca+UVn992jXdLUSBDZR4eBpFhKyVxmA4gUHra/5fesjGIxrDhHesNr/sVoiiysA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "micromark-extension-cjk-friendly": "2.0.1"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "@types/mdast": "^4.0.0",
+        "unified": "^11.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/mdast": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/remark-cjk-friendly-gfm-strikethrough": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/remark-cjk-friendly-gfm-strikethrough/-/remark-cjk-friendly-gfm-strikethrough-2.0.1.tgz",
+      "integrity": "sha512-pWKj25O2eLXIL1aBupayl1fKhco+Brw8qWUWJPVB9EBzbQNd7nGLj0nLmJpggWsGLR5j5y40PIdjxby9IEYTuA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "micromark-extension-cjk-friendly-gfm-strikethrough": "2.0.1"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "@types/mdast": "^4.0.0",
+        "unified": "^11.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/mdast": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/remark-gfm": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/remark-gfm/-/remark-gfm-4.0.1.tgz",
@@ -3377,18 +3504,18 @@
       "license": "MIT"
     },
     "node_modules/shiki": {
-      "version": "4.0.1",
+      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/shiki/-/shiki-4.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/shiki/-/shiki-4.0.2.tgz",
-      "integrity": "sha512-EkAEhDTN5WhpoQFXFw79OHIrSAfHhlImeCdSyg4u4XvrpxKEmdo/9x/HWSowujAnUrFsGOwWiE58a6GVentMnQ==",
+      "integrity": "sha512-eAVKTMedR5ckPo4xne/PjYQYrU3qx78gtJZ+sHlXEg5IHhhoQhMfZVzetTYuaJS0L2Ef3AcCRzCHV8T0WI6nIQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@shikijs/core": "4.0.1",
+        "@shikijs/core": "4.0.2",
-        "@shikijs/engine-javascript": "4.0.1",
+        "@shikijs/engine-javascript": "4.0.2",
-        "@shikijs/engine-oniguruma": "4.0.1",
+        "@shikijs/engine-oniguruma": "4.0.2",
-        "@shikijs/langs": "4.0.1",
+        "@shikijs/langs": "4.0.2",
-        "@shikijs/themes": "4.0.1",
+        "@shikijs/themes": "4.0.2",
-        "@shikijs/types": "4.0.1",
+        "@shikijs/types": "4.0.2",
         "@shikijs/vscode-textmate": "^10.0.2",
         "@types/hast": "^3.0.4"
       },
@@ -3457,23 +3584,23 @@
       }
     },
     "node_modules/style-to-js": {
-      "version": "1.1.19",
+      "version": "1.1.21",
-      "resolved": "https://registry.npmjs.org/style-to-js/-/style-to-js-1.1.19.tgz",
+      "resolved": "https://registry.npmjs.org/style-to-js/-/style-to-js-1.1.21.tgz",
-      "integrity": "sha512-Ev+SgeqiNGT1ufsXyVC5RrJRXdrkRJ1Gol9Qw7Pb72YCKJXrBvP0ckZhBeVSrw2m06DJpei2528uIpjMb4TsoQ==",
+      "integrity": "sha512-RjQetxJrrUJLQPHbLku6U/ocGtzyjbJMP9lCNK7Ag0CNh690nSH8woqWH9u16nMjYBAok+i7JO1NP2pOy8IsPQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "style-to-object": "1.0.12"
+        "style-to-object": "1.0.14"
       }
     },
     "node_modules/style-to-object": {
-      "version": "1.0.12",
+      "version": "1.0.14",
-      "resolved": "https://registry.npmjs.org/style-to-object/-/style-to-object-1.0.12.tgz",
+      "resolved": "https://registry.npmjs.org/style-to-object/-/style-to-object-1.0.14.tgz",
-      "integrity": "sha512-ddJqYnoT4t97QvN2C95bCgt+m7AAgXjVnkk/jxAfmp7EAB8nnqqZYEbMd3em7/vEomDb2LAQKAy1RFfv41mdNw==",
+      "integrity": "sha512-LIN7rULI0jBscWQYaSswptyderlarFkjQ+t79nzty8tcIAceVomEVlLzH5VP4Cmsv6MtKhs7qaAiwlcp+Mgaxw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "inline-style-parser": "0.2.6"
+        "inline-style-parser": "0.2.7"
       }
     },
     "node_modules/tinyglobby": {
@@ -3598,9 +3725,9 @@
       }
     },
     "node_modules/unhead": {
-      "version": "2.1.10",
+      "version": "2.1.12",
-      "resolved": "https://registry.npmjs.org/unhead/-/unhead-2.1.10.tgz",
+      "resolved": "https://registry.npmjs.org/unhead/-/unhead-2.1.12.tgz",
-      "integrity": "sha512-We8l9uNF8zz6U8lfQaVG70+R/QBfQx1oPIgXin4BtZnK2IQpz6yazQ0qjMNVBDw2ADgF2ea58BtvSK+XX5AS7g==",
+      "integrity": "sha512-iTHdWD9ztTunOErtfUFk6Wr11BxvzumcYJ0CzaSCBUOEtg+DUZ9+gnE99i8QkLFT2q1rZD48BYYGXpOZVDLYkA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {

pkg/conduwuit.service

@@ -18,6 +18,7 @@ Environment="CONTINUWUITY_DATABASE_PATH=%S/conduwuit"
 Environment="CONTINUWUITY_CONFIG_RELOAD_SIGNAL=true"
 
 LoadCredential=conduwuit.toml:/etc/conduwuit/conduwuit.toml
+RefreshOnReload=yes
 
 ExecStart=/usr/bin/conduwuit --config ${CREDENTIALS_DIRECTORY}/conduwuit.toml
 

renovate.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-    "extends": ["config:recommended", "replacements:all"],
+    "extends": ["config:recommended", "replacements:all", ":semanticCommitTypeAll(chore)"],
     "dependencyDashboard": true,
     "osvVulnerabilityAlerts": true,
     "lockFileMaintenance": {
@@ -36,10 +36,18 @@
     },
     "packageRules": [
         {
-            "description": "Batch patch-level Rust dependency updates",
+            "description": "Batch minor and patch Rust dependency updates",
+            "matchManagers": ["cargo"],
+            "matchUpdateTypes": ["minor", "patch"],
+            "matchCurrentVersion": ">=1.0.0",
+            "groupName": "rust-non-major"
+        },
+        {
+            "description": "Batch patch-level zerover Rust dependency updates",
             "matchManagers": ["cargo"],
             "matchUpdateTypes": ["patch"],
-            "groupName": "rust-patch-updates"
+            "matchCurrentVersion": ">=0.1.0,<1.0.0",
+            "groupName": "rust-zerover-patch-updates"
         },
         {
             "description": "Limit concurrent Cargo PRs",

rust-toolchain.toml

@@ -10,7 +10,7 @@
 
 [toolchain]
 profile = "minimal"
-channel = "1.90.0"
+channel = "1.92.0"
 components = [
     # For rust-analyzer
     "rust-src",

src/admin/Cargo.toml

@@ -80,6 +80,7 @@ conduwuit-macros.workspace = true
 conduwuit-service.workspace = true
 const-str.workspace = true
 futures.workspace = true
+lettre.workspace = true
 log.workspace = true
 ruma.workspace = true
 serde_json.workspace = true

src/admin/debug/commands.rs

@@ -19,6 +19,7 @@ use conduwuit::{
 	warn,
 };
 use futures::{FutureExt, StreamExt, TryStreamExt};
+use lettre::message::Mailbox;
 use ruma::{
 	CanonicalJsonObject, CanonicalJsonValue, EventId, OwnedEventId, OwnedRoomId,
 	OwnedRoomOrAliasId, OwnedServerName, RoomId, RoomVersionId,
@@ -876,3 +877,31 @@ pub(super) async fn trim_memory(&self) -> Result {
 
 	writeln!(self, "done").await
 }
+
+#[admin_command]
+pub(super) async fn send_test_email(&self) -> Result {
+	self.bail_restricted()?;
+
+	let mailer = self.services.mailer.expect_mailer()?;
+	let Some(sender) = self.sender else {
+		return Err!("No sender user provided in context");
+	};
+
+	let Some(email) = self
+		.services
+		.threepid
+		.get_email_for_localpart(sender.localpart())
+		.await
+	else {
+		return Err!("{} has no associated email address", sender);
+	};
+
+	mailer
+		.send(Mailbox::new(None, email.clone()), service::mailer::messages::Test)
+		.await?;
+
+	self.write_str(&format!("Test email successfully sent to {email}"))
+		.await?;
+
+	Ok(())
+}

src/admin/debug/mod.rs

@@ -225,6 +225,9 @@ pub enum DebugCommand {
 		level: Option<i32>,
 	},
 
+	/// Send a test email to the invoking admin's email address
+	SendTestEmail,
+
 	/// Developer test stubs
 	#[command(subcommand)]
 	#[allow(non_snake_case)]

src/admin/user/commands.rs

@@ -11,6 +11,7 @@ use conduwuit::{
 	warn,
 };
 use futures::{FutureExt, StreamExt};
+use lettre::Address;
 use ruma::{
 	OwnedEventId, OwnedRoomId, OwnedRoomOrAliasId, OwnedServerName, OwnedUserId, UserId,
 	events::{
@@ -296,6 +297,31 @@ pub(super) async fn reset_password(
 	Ok(())
 }
 
+#[admin_command]
+pub(super) async fn issue_password_reset_link(&self, username: String) -> Result {
+	use conduwuit_service::password_reset::{PASSWORD_RESET_PATH, RESET_TOKEN_QUERY_PARAM};
+
+	self.bail_restricted()?;
+
+	let mut reset_url = self
+		.services
+		.config
+		.get_client_domain()
+		.join(PASSWORD_RESET_PATH)
+		.unwrap();
+
+	let user_id = parse_local_user_id(self.services, &username)?;
+	let token = self.services.password_reset.issue_token(user_id).await?;
+	reset_url
+		.query_pairs_mut()
+		.append_pair(RESET_TOKEN_QUERY_PARAM, &token.token);
+
+	self.write_str(&format!("Password reset link issued for {username}: {reset_url}"))
+		.await?;
+
+	Ok(())
+}
+
 #[admin_command]
 pub(super) async fn deactivate_all(&self, no_leave_rooms: bool, force: bool) -> Result {
 	if self.body.len() < 2
@@ -1069,3 +1095,106 @@ pub(super) async fn enable_login(&self, user_id: String) -> Result {
 
 	self.write_str(&format!("{user_id} can now log in.")).await
 }
+
+#[admin_command]
+pub(super) async fn get_email(&self, user_id: String) -> Result {
+	self.bail_restricted()?;
+	let user_id = parse_local_user_id(self.services, &user_id)?;
+
+	match self
+		.services
+		.threepid
+		.get_email_for_localpart(user_id.localpart())
+		.await
+	{
+		| Some(email) =>
+			self.write_str(&format!("{user_id} has the associated email address {email}."))
+				.await,
+		| None =>
+			self.write_str(&format!("{user_id} has no associated email address."))
+				.await,
+	}
+}
+
+#[admin_command]
+pub(super) async fn get_user_by_email(&self, email: String) -> Result {
+	self.bail_restricted()?;
+
+	let Ok(email) = Address::try_from(email) else {
+		return Err!("Invalid email address.");
+	};
+
+	match self.services.threepid.get_localpart_for_email(&email).await {
+		| Some(localpart) => {
+			let user_id = OwnedUserId::parse(format!(
+				"@{localpart}:{}",
+				self.services.globals.server_name()
+			))
+			.unwrap();
+
+			self.write_str(&format!("{email} belongs to {user_id}."))
+				.await
+		},
+		| None =>
+			self.write_str(&format!("No user has {email} as their email address."))
+				.await,
+	}
+}
+
+#[admin_command]
+pub(super) async fn change_email(&self, user_id: String, email: Option<String>) -> Result {
+	self.bail_restricted()?;
+
+	let user_id = parse_local_user_id(self.services, &user_id)?;
+	let Ok(new_email) = email.map(Address::try_from).transpose() else {
+		return Err!("Invalid email address.");
+	};
+
+	if self.services.mailer.mailer().is_none() {
+		warn!("SMTP has not been configured on this server, emails cannot be sent.");
+	}
+
+	let current_email = self
+		.services
+		.threepid
+		.get_email_for_localpart(user_id.localpart())
+		.await;
+
+	match (current_email, new_email) {
+		| (None, None) =>
+			self.write_str(&format!(
+				"{user_id} already had no associated email. No changes have been made."
+			))
+			.await,
+		| (current_email, Some(new_email)) => {
+			self.services
+				.threepid
+				.associate_localpart_email(user_id.localpart(), &new_email)
+				.await?;
+
+			if let Some(current_email) = current_email {
+				self.write_str(&format!(
+					"The associated email of {user_id} has been changed from {current_email} to \
+					 {new_email}."
+				))
+				.await
+			} else {
+				self.write_str(&format!(
+					"{user_id} has been associated with the email {new_email}."
+				))
+				.await
+			}
+		},
+		| (Some(current_email), None) => {
+			self.services
+				.threepid
+				.disassociate_localpart_email(user_id.localpart())
+				.await;
+
+			self.write_str(&format!(
+				"The associated email of {user_id} has been removed (it was {current_email})."
+			))
+			.await
+		},
+	}
+}

src/admin/user/mod.rs

@@ -29,6 +29,30 @@ pub enum UserCommand {
 		password: Option<String>,
 	},
 
+	/// Issue a self-service password reset link for a user.
+	IssuePasswordResetLink {
+		/// Username of the user who may use the link
+		username: String,
+	},
+
+	/// Get a user's associated email address.
+	GetEmail {
+		user_id: String,
+	},
+
+	/// Get the user with the given email address.
+	GetUserByEmail {
+		email: String,
+	},
+
+	/// Update or remove a user's email address.
+	///
+	/// If `email` is not supplied, the user's existing address will be removed.
+	ChangeEmail {
+		user_id: String,
+		email: Option<String>,
+	},
+
 	/// Deactivate a user
 	///
 	/// User will be removed from all rooms by default.

src/api/Cargo.toml

@@ -85,6 +85,7 @@ http-body-util.workspace = true
 hyper.workspace = true
 ipaddress.workspace = true
 itertools.workspace = true
+lettre.workspace = true
 log.workspace = true
 rand.workspace = true
 reqwest.workspace = true

src/api/client/account.rs

@@ -1,980 +0,0 @@
-use std::fmt::Write;
-
-use axum::extract::State;
-use axum_client_ip::InsecureClientIp;
-use conduwuit::{
-	Err, Error, Event, Result, debug_info, err, error, info,
-	matrix::pdu::PduBuilder,
-	utils::{self, ReadyExt, stream::BroadbandExt},
-	warn,
-};
-use conduwuit_service::Services;
-use futures::{FutureExt, StreamExt};
-use register::RegistrationKind;
-use ruma::{
-	OwnedRoomId, UserId,
-	api::client::{
-		account::{
-			ThirdPartyIdRemovalStatus, change_password, check_registration_token_validity,
-			deactivate, get_3pids, get_username_availability,
-			register::{self, LoginType},
-			request_3pid_management_token_via_email, request_3pid_management_token_via_msisdn,
-			whoami,
-		},
-		uiaa::{AuthFlow, AuthType, UiaaInfo},
-	},
-	events::{
-		GlobalAccountDataEventType, StateEventType,
-		room::{
-			member::{MembershipState, RoomMemberEventContent},
-			message::RoomMessageEventContent,
-			power_levels::{RoomPowerLevels, RoomPowerLevelsEventContent},
-		},
-	},
-	push,
-};
-
-use super::{DEVICE_ID_LENGTH, SESSION_ID_LENGTH, TOKEN_LENGTH, join_room_by_id_helper};
-use crate::Ruma;
-
-const RANDOM_USER_ID_LENGTH: usize = 10;
-
-/// # `GET /_matrix/client/v3/register/available`
-///
-/// Checks if a username is valid and available on this server.
-///
-/// Conditions for returning true:
-/// - The user id is not historical
-/// - The server name of the user id matches this server
-/// - No user or appservice on this server already claimed this username
-///
-/// Note: This will not reserve the username, so the username might become
-/// invalid when trying to register
-#[tracing::instrument(skip_all, fields(%client), name = "register_available", level = "info")]
-pub(crate) async fn get_register_available_route(
-	State(services): State<crate::State>,
-	InsecureClientIp(client): InsecureClientIp,
-	body: Ruma<get_username_availability::v3::Request>,
-) -> Result<get_username_availability::v3::Response> {
-	// workaround for https://github.com/matrix-org/matrix-appservice-irc/issues/1780 due to inactivity of fixing the issue
-	let is_matrix_appservice_irc = body.appservice_info.as_ref().is_some_and(|appservice| {
-		appservice.registration.id == "irc"
-			|| appservice.registration.id.contains("matrix-appservice-irc")
-			|| appservice.registration.id.contains("matrix_appservice_irc")
-	});
-
-	if services
-		.globals
-		.forbidden_usernames()
-		.is_match(&body.username)
-	{
-		return Err!(Request(Forbidden("Username is forbidden")));
-	}
-
-	// don't force the username lowercase if it's from matrix-appservice-irc
-	let body_username = if is_matrix_appservice_irc {
-		body.username.clone()
-	} else {
-		body.username.to_lowercase()
-	};
-
-	// Validate user id
-	let user_id =
-		match UserId::parse_with_server_name(&body_username, services.globals.server_name()) {
-			| Ok(user_id) => {
-				if let Err(e) = user_id.validate_strict() {
-					// unless the username is from the broken matrix appservice IRC bridge, we
-					// should follow synapse's behaviour on not allowing things like spaces
-					// and UTF-8 characters in usernames
-					if !is_matrix_appservice_irc {
-						return Err!(Request(InvalidUsername(debug_warn!(
-							"Username {body_username} contains disallowed characters or spaces: \
-							 {e}"
-						))));
-					}
-				}
-
-				user_id
-			},
-			| Err(e) => {
-				return Err!(Request(InvalidUsername(debug_warn!(
-					"Username {body_username} is not valid: {e}"
-				))));
-			},
-		};
-
-	// Check if username is creative enough
-	if services.users.exists(&user_id).await {
-		return Err!(Request(UserInUse("User ID is not available.")));
-	}
-
-	if let Some(ref info) = body.appservice_info {
-		if !info.is_user_match(&user_id) {
-			return Err!(Request(Exclusive("Username is not in an appservice namespace.")));
-		}
-	}
-
-	if services.appservice.is_exclusive_user_id(&user_id).await {
-		return Err!(Request(Exclusive("Username is reserved by an appservice.")));
-	}
-
-	Ok(get_username_availability::v3::Response { available: true })
-}
-
-/// # `POST /_matrix/client/v3/register`
-///
-/// Register an account on this homeserver.
-///
-/// You can use [`GET
-/// /_matrix/client/v3/register/available`](fn.get_register_available_route.
-/// html) to check if the user id is valid and available.
-///
-/// - Only works if registration is enabled
-/// - If type is guest: ignores all parameters except
-///   initial_device_display_name
-/// - If sender is not appservice: Requires UIAA (but we only use a dummy stage)
-/// - If type is not guest and no username is given: Always fails after UIAA
-///   check
-/// - Creates a new account and populates it with default account data
-/// - If `inhibit_login` is false: Creates a device and returns device id and
-///   access_token
-#[allow(clippy::doc_markdown)]
-#[tracing::instrument(skip_all, fields(%client), name = "register", level = "info")]
-pub(crate) async fn register_route(
-	State(services): State<crate::State>,
-	InsecureClientIp(client): InsecureClientIp,
-	body: Ruma<register::v3::Request>,
-) -> Result<register::v3::Response> {
-	let is_guest = body.kind == RegistrationKind::Guest;
-	let emergency_mode_enabled = services.config.emergency_password.is_some();
-
-	// Allow registration if it's enabled in the config file or if this is the first
-	// run (so the first user account can be created)
-	let allow_registration =
-		services.config.allow_registration || services.firstrun.is_first_run();
-
-	if !allow_registration && body.appservice_info.is_none() {
-		match (body.username.as_ref(), body.initial_device_display_name.as_ref()) {
-			| (Some(username), Some(device_display_name)) => {
-				info!(
-					%is_guest,
-					user = %username,
-					device_name = %device_display_name,
-					"Rejecting registration attempt as registration is disabled"
-				);
-			},
-			| (Some(username), _) => {
-				info!(
-					%is_guest,
-					user = %username,
-					"Rejecting registration attempt as registration is disabled"
-				);
-			},
-			| (_, Some(device_display_name)) => {
-				info!(
-					%is_guest,
-					device_name = %device_display_name,
-					"Rejecting registration attempt as registration is disabled"
-				);
-			},
-			| (None, _) => {
-				info!(
-					%is_guest,
-					"Rejecting registration attempt as registration is disabled"
-				);
-			},
-		}
-
-		return Err!(Request(Forbidden(
-			"This server is not accepting registrations at this time."
-		)));
-	}
-
-	if is_guest && !services.config.allow_guest_registration {
-		info!(
-			"Guest registration disabled, rejecting guest registration attempt, initial device \
-			 name: \"{}\"",
-			body.initial_device_display_name.as_deref().unwrap_or("")
-		);
-		return Err!(Request(GuestAccessForbidden("Guest registration is disabled.")));
-	}
-
-	// forbid guests from registering if there is not a real admin user yet. give
-	// generic user error.
-	if is_guest && services.users.count().await < 2 {
-		warn!(
-			"Guest account attempted to register before a real admin user has been registered, \
-			 rejecting registration. Guest's initial device name: \"{}\"",
-			body.initial_device_display_name.as_deref().unwrap_or("")
-		);
-		return Err!(Request(Forbidden(
-			"This server is not accepting registrations at this time."
-		)));
-	}
-
-	let user_id = match (body.username.as_ref(), is_guest) {
-		| (Some(username), false) => {
-			// workaround for https://github.com/matrix-org/matrix-appservice-irc/issues/1780 due to inactivity of fixing the issue
-			let is_matrix_appservice_irc =
-				body.appservice_info.as_ref().is_some_and(|appservice| {
-					appservice.registration.id == "irc"
-						|| appservice.registration.id.contains("matrix-appservice-irc")
-						|| appservice.registration.id.contains("matrix_appservice_irc")
-				});
-
-			if services.globals.forbidden_usernames().is_match(username)
-				&& !emergency_mode_enabled
-			{
-				return Err!(Request(Forbidden("Username is forbidden")));
-			}
-
-			// don't force the username lowercase if it's from matrix-appservice-irc
-			let body_username = if is_matrix_appservice_irc {
-				username.clone()
-			} else {
-				username.to_lowercase()
-			};
-
-			let proposed_user_id = match UserId::parse_with_server_name(
-				&body_username,
-				services.globals.server_name(),
-			) {
-				| Ok(user_id) => {
-					if let Err(e) = user_id.validate_strict() {
-						// unless the username is from the broken matrix appservice IRC bridge, or
-						// we are in emergency mode, we should follow synapse's behaviour on
-						// not allowing things like spaces and UTF-8 characters in usernames
-						if !is_matrix_appservice_irc && !emergency_mode_enabled {
-							return Err!(Request(InvalidUsername(debug_warn!(
-								"Username {body_username} contains disallowed characters or \
-								 spaces: {e}"
-							))));
-						}
-					}
-
-					// Don't allow registration with user IDs that aren't local
-					if !services.globals.user_is_local(&user_id) {
-						return Err!(Request(InvalidUsername(
-							"Username {body_username} is not local to this server"
-						)));
-					}
-
-					user_id
-				},
-				| Err(e) => {
-					return Err!(Request(InvalidUsername(debug_warn!(
-						"Username {body_username} is not valid: {e}"
-					))));
-				},
-			};
-
-			if services.users.exists(&proposed_user_id).await {
-				return Err!(Request(UserInUse("User ID is not available.")));
-			}
-
-			proposed_user_id
-		},
-		| _ => loop {
-			let proposed_user_id = UserId::parse_with_server_name(
-				utils::random_string(RANDOM_USER_ID_LENGTH).to_lowercase(),
-				services.globals.server_name(),
-			)
-			.unwrap();
-			if !services.users.exists(&proposed_user_id).await {
-				break proposed_user_id;
-			}
-		},
-	};
-
-	if body.body.login_type == Some(LoginType::ApplicationService) {
-		match body.appservice_info {
-			| Some(ref info) =>
-				if !info.is_user_match(&user_id) && !emergency_mode_enabled {
-					return Err!(Request(Exclusive(
-						"Username is not in an appservice namespace."
-					)));
-				},
-			| _ => {
-				return Err!(Request(MissingToken("Missing appservice token.")));
-			},
-		}
-	} else if services.appservice.is_exclusive_user_id(&user_id).await && !emergency_mode_enabled
-	{
-		return Err!(Request(Exclusive("Username is reserved by an appservice.")));
-	}
-
-	// UIAA
-	let mut uiaainfo = UiaaInfo {
-		flows: Vec::new(),
-		completed: Vec::new(),
-		params: Box::default(),
-		session: None,
-		auth_error: None,
-	};
-	let skip_auth = body.appservice_info.is_some() || is_guest;
-
-	// Populate required UIAA flows
-
-	if services.firstrun.is_first_run() {
-		// Registration token forced while in first-run mode
-		uiaainfo.flows.push(AuthFlow {
-			stages: vec![AuthType::RegistrationToken],
-		});
-	} else {
-		if services
-			.registration_tokens
-			.iterate_tokens()
-			.next()
-			.await
-			.is_some()
-		{
-			// Registration token required
-			uiaainfo.flows.push(AuthFlow {
-				stages: vec![AuthType::RegistrationToken],
-			});
-		}
-
-		if services.config.recaptcha_private_site_key.is_some() {
-			if let Some(pubkey) = &services.config.recaptcha_site_key {
-				// ReCaptcha required
-				uiaainfo
-					.flows
-					.push(AuthFlow { stages: vec![AuthType::ReCaptcha] });
-				uiaainfo.params = serde_json::value::to_raw_value(&serde_json::json!({
-					"m.login.recaptcha": {
-						"public_key": pubkey,
-					},
-				}))
-				.expect("Failed to serialize recaptcha params");
-			}
-		}
-
-		if uiaainfo.flows.is_empty() && !skip_auth {
-			// Registration isn't _disabled_, but there's no captcha configured and no
-			// registration tokens currently set. Bail out by default unless open
-			// registration was explicitly enabled.
-			if !services
-				.config
-				.yes_i_am_very_very_sure_i_want_an_open_registration_server_prone_to_abuse
-			{
-				return Err!(Request(Forbidden(
-					"This server is not accepting registrations at this time."
-				)));
-			}
-
-			// We have open registration enabled (😧), provide a dummy stage
-			uiaainfo = UiaaInfo {
-				flows: vec![AuthFlow { stages: vec![AuthType::Dummy] }],
-				completed: Vec::new(),
-				params: Box::default(),
-				session: None,
-				auth_error: None,
-			};
-		}
-	}
-
-	if !skip_auth {
-		match &body.auth {
-			| Some(auth) => {
-				let (worked, uiaainfo) = services
-					.uiaa
-					.try_auth(
-						&UserId::parse_with_server_name("", services.globals.server_name())
-							.unwrap(),
-						"".into(),
-						auth,
-						&uiaainfo,
-					)
-					.await?;
-				if !worked {
-					return Err(Error::Uiaa(uiaainfo));
-				}
-				// Success!
-			},
-			| _ => match body.json_body {
-				| Some(ref json) => {
-					uiaainfo.session = Some(utils::random_string(SESSION_ID_LENGTH));
-					services.uiaa.create(
-						&UserId::parse_with_server_name("", services.globals.server_name())
-							.unwrap(),
-						"".into(),
-						&uiaainfo,
-						json,
-					);
-					return Err(Error::Uiaa(uiaainfo));
-				},
-				| _ => {
-					return Err!(Request(NotJson("JSON body is not valid")));
-				},
-			},
-		}
-	}
-
-	let password = if is_guest { None } else { body.password.as_deref() };
-
-	// Create user
-	services.users.create(&user_id, password, None).await?;
-
-	// Default to pretty displayname
-	let mut displayname = user_id.localpart().to_owned();
-
-	// If `new_user_displayname_suffix` is set, registration will push whatever
-	// content is set to the user's display name with a space before it
-	if !services.globals.new_user_displayname_suffix().is_empty()
-		&& body.appservice_info.is_none()
-	{
-		write!(displayname, " {}", services.server.config.new_user_displayname_suffix)?;
-	}
-
-	services
-		.users
-		.set_displayname(&user_id, Some(displayname.clone()));
-
-	// Initial account data
-	services
-		.account_data
-		.update(
-			None,
-			&user_id,
-			GlobalAccountDataEventType::PushRules.to_string().into(),
-			&serde_json::to_value(ruma::events::push_rules::PushRulesEvent {
-				content: ruma::events::push_rules::PushRulesEventContent {
-					global: push::Ruleset::server_default(&user_id),
-				},
-			})?,
-		)
-		.await?;
-
-	// Generate new device id if the user didn't specify one
-	let no_device = body.inhibit_login
-		|| body
-			.appservice_info
-			.as_ref()
-			.is_some_and(|aps| aps.registration.device_management);
-	let (token, device) = if !no_device {
-		// Don't create a device for inhibited logins
-		let device_id = if is_guest { None } else { body.device_id.clone() }
-			.unwrap_or_else(|| utils::random_string(DEVICE_ID_LENGTH).into());
-
-		// Generate new token for the device
-		let new_token = utils::random_string(TOKEN_LENGTH);
-
-		// Create device for this account
-		services
-			.users
-			.create_device(
-				&user_id,
-				&device_id,
-				&new_token,
-				body.initial_device_display_name.clone(),
-				Some(client.to_string()),
-			)
-			.await?;
-		debug_info!(%user_id, %device_id, "User account was created");
-		(Some(new_token), Some(device_id))
-	} else {
-		(None, None)
-	};
-
-	let device_display_name = body.initial_device_display_name.as_deref().unwrap_or("");
-
-	// log in conduit admin channel if a non-guest user registered
-	if body.appservice_info.is_none() && !is_guest {
-		if !device_display_name.is_empty() {
-			let notice = format!(
-				"New user \"{user_id}\" registered on this server from IP {client} and device \
-				 display name \"{device_display_name}\""
-			);
-
-			info!("{notice}");
-			if services.server.config.admin_room_notices {
-				services.admin.notice(&notice).await;
-			}
-		} else {
-			let notice = format!("New user \"{user_id}\" registered on this server.");
-
-			info!("{notice}");
-			if services.server.config.admin_room_notices {
-				services.admin.notice(&notice).await;
-			}
-		}
-	}
-
-	// log in conduit admin channel if a guest registered
-	if body.appservice_info.is_none() && is_guest && services.config.log_guest_registrations {
-		debug_info!("New guest user \"{user_id}\" registered on this server.");
-
-		if !device_display_name.is_empty() {
-			if services.server.config.admin_room_notices {
-				services
-					.admin
-					.notice(&format!(
-						"Guest user \"{user_id}\" with device display name \
-						 \"{device_display_name}\" registered on this server from IP {client}"
-					))
-					.await;
-			}
-		} else {
-			#[allow(clippy::collapsible_else_if)]
-			if services.server.config.admin_room_notices {
-				services
-					.admin
-					.notice(&format!(
-						"Guest user \"{user_id}\" with no device display name registered on \
-						 this server from IP {client}",
-					))
-					.await;
-			}
-		}
-	}
-
-	if !is_guest {
-		// Make the first user to register an administrator and disable first-run mode.
-		let was_first_user = services.firstrun.empower_first_user(&user_id).await?;
-
-		// If the registering user was not the first and we're suspending users on
-		// register, suspend them.
-		if !was_first_user && services.config.suspend_on_register {
-			// Note that we can still do auto joins for suspended users
-			services
-				.users
-				.suspend_account(&user_id, &services.globals.server_user)
-				.await;
-			// And send an @room notice to the admin room, to prompt admins to review the
-			// new user and ideally unsuspend them if deemed appropriate.
-			if services.server.config.admin_room_notices {
-				services
-					.admin
-					.send_loud_message(RoomMessageEventContent::text_plain(format!(
-						"User {user_id} has been suspended as they are not the first user on \
-						 this server. Please review and unsuspend them if appropriate."
-					)))
-					.await
-					.ok();
-			}
-		}
-	}
-
-	if body.appservice_info.is_none()
-		&& !services.server.config.auto_join_rooms.is_empty()
-		&& (services.config.allow_guests_auto_join_rooms || !is_guest)
-	{
-		for room in &services.server.config.auto_join_rooms {
-			let Ok(room_id) = services.rooms.alias.resolve(room).await else {
-				error!(
-					"Failed to resolve room alias to room ID when attempting to auto join \
-					 {room}, skipping"
-				);
-				continue;
-			};
-
-			if !services
-				.rooms
-				.state_cache
-				.server_in_room(services.globals.server_name(), &room_id)
-				.await
-			{
-				warn!(
-					"Skipping room {room} to automatically join as we have never joined before."
-				);
-				continue;
-			}
-
-			if let Some(room_server_name) = room.server_name() {
-				match join_room_by_id_helper(
-					&services,
-					&user_id,
-					&room_id,
-					Some("Automatically joining this room upon registration".to_owned()),
-					&[services.globals.server_name().to_owned(), room_server_name.to_owned()],
-					&body.appservice_info,
-				)
-				.boxed()
-				.await
-				{
-					| Err(e) => {
-						// don't return this error so we don't fail registrations
-						error!(
-							"Failed to automatically join room {room} for user {user_id}: {e}"
-						);
-					},
-					| _ => {
-						info!("Automatically joined room {room} for user {user_id}");
-					},
-				}
-			}
-		}
-	}
-
-	Ok(register::v3::Response {
-		access_token: token,
-		user_id,
-		device_id: device,
-		refresh_token: None,
-		expires_in: None,
-	})
-}
-
-/// # `POST /_matrix/client/r0/account/password`
-///
-/// Changes the password of this account.
-///
-/// - Requires UIAA to verify user password
-/// - Changes the password of the sender user
-/// - The password hash is calculated using argon2 with 32 character salt, the
-///   plain password is
-/// not saved
-///
-/// If logout_devices is true it does the following for each device except the
-/// sender device:
-/// - Invalidates access token
-/// - Deletes device metadata (device id, device display name, last seen ip,
-///   last seen ts)
-/// - Forgets to-device events
-/// - Triggers device list updates
-#[tracing::instrument(skip_all, fields(%client), name = "change_password", level = "info")]
-pub(crate) async fn change_password_route(
-	State(services): State<crate::State>,
-	InsecureClientIp(client): InsecureClientIp,
-	body: Ruma<change_password::v3::Request>,
-) -> Result<change_password::v3::Response> {
-	// Authentication for this endpoint was made optional, but we need
-	// authentication currently
-	let sender_user = body
-		.sender_user
-		.as_ref()
-		.ok_or_else(|| err!(Request(MissingToken("Missing access token."))))?;
-
-	let mut uiaainfo = UiaaInfo {
-		flows: vec![AuthFlow { stages: vec![AuthType::Password] }],
-		completed: Vec::new(),
-		params: Box::default(),
-		session: None,
-		auth_error: None,
-	};
-
-	match &body.auth {
-		| Some(auth) => {
-			let (worked, uiaainfo) = services
-				.uiaa
-				.try_auth(sender_user, body.sender_device(), auth, &uiaainfo)
-				.await?;
-
-			if !worked {
-				return Err(Error::Uiaa(uiaainfo));
-			}
-
-			// Success!
-		},
-		| _ => match body.json_body {
-			| Some(ref json) => {
-				uiaainfo.session = Some(utils::random_string(SESSION_ID_LENGTH));
-				services
-					.uiaa
-					.create(sender_user, body.sender_device(), &uiaainfo, json);
-
-				return Err(Error::Uiaa(uiaainfo));
-			},
-			| _ => {
-				return Err!(Request(NotJson("JSON body is not valid")));
-			},
-		},
-	}
-
-	services
-		.users
-		.set_password(sender_user, Some(&body.new_password))
-		.await?;
-
-	if body.logout_devices {
-		// Logout all devices except the current one
-		services
-			.users
-			.all_device_ids(sender_user)
-			.ready_filter(|id| *id != body.sender_device())
-			.for_each(|id| services.users.remove_device(sender_user, id))
-			.await;
-
-		// Remove all pushers except the ones associated with this session
-		services
-			.pusher
-			.get_pushkeys(sender_user)
-			.map(ToOwned::to_owned)
-			.broad_filter_map(async |pushkey| {
-				services
-					.pusher
-					.get_pusher_device(&pushkey)
-					.await
-					.ok()
-					.filter(|pusher_device| pusher_device != body.sender_device())
-					.is_some()
-					.then_some(pushkey)
-			})
-			.for_each(async |pushkey| {
-				services.pusher.delete_pusher(sender_user, &pushkey).await;
-			})
-			.await;
-	}
-
-	info!("User {sender_user} changed their password.");
-
-	if services.server.config.admin_room_notices {
-		services
-			.admin
-			.notice(&format!("User {sender_user} changed their password."))
-			.await;
-	}
-
-	Ok(change_password::v3::Response {})
-}
-
-/// # `GET /_matrix/client/v3/account/whoami`
-///
-/// Get `user_id` of the sender user.
-///
-/// Note: Also works for Application Services
-pub(crate) async fn whoami_route(
-	State(services): State<crate::State>,
-	body: Ruma<whoami::v3::Request>,
-) -> Result<whoami::v3::Response> {
-	let is_guest = services
-		.users
-		.is_deactivated(body.sender_user())
-		.await
-		.map_err(|_| {
-			err!(Request(Forbidden("Application service has not registered this user.")))
-		})? && body.appservice_info.is_none();
-	Ok(whoami::v3::Response {
-		user_id: body.sender_user().to_owned(),
-		device_id: body.sender_device.clone(),
-		is_guest,
-	})
-}
-
-/// # `POST /_matrix/client/r0/account/deactivate`
-///
-/// Deactivate sender user account.
-///
-/// - Leaves all rooms and rejects all invitations
-/// - Invalidates all access tokens
-/// - Deletes all device metadata (device id, device display name, last seen ip,
-///   last seen ts)
-/// - Forgets all to-device events
-/// - Triggers device list updates
-/// - Removes ability to log in again
-#[tracing::instrument(skip_all, fields(%client), name = "deactivate", level = "info")]
-pub(crate) async fn deactivate_route(
-	State(services): State<crate::State>,
-	InsecureClientIp(client): InsecureClientIp,
-	body: Ruma<deactivate::v3::Request>,
-) -> Result<deactivate::v3::Response> {
-	// Authentication for this endpoint was made optional, but we need
-	// authentication currently
-	let sender_user = body
-		.sender_user
-		.as_ref()
-		.ok_or_else(|| err!(Request(MissingToken("Missing access token."))))?;
-
-	let mut uiaainfo = UiaaInfo {
-		flows: vec![AuthFlow { stages: vec![AuthType::Password] }],
-		completed: Vec::new(),
-		params: Box::default(),
-		session: None,
-		auth_error: None,
-	};
-
-	match &body.auth {
-		| Some(auth) => {
-			let (worked, uiaainfo) = services
-				.uiaa
-				.try_auth(sender_user, body.sender_device(), auth, &uiaainfo)
-				.await?;
-
-			if !worked {
-				return Err(Error::Uiaa(uiaainfo));
-			}
-			// Success!
-		},
-		| _ => match body.json_body {
-			| Some(ref json) => {
-				uiaainfo.session = Some(utils::random_string(SESSION_ID_LENGTH));
-				services
-					.uiaa
-					.create(sender_user, body.sender_device(), &uiaainfo, json);
-
-				return Err(Error::Uiaa(uiaainfo));
-			},
-			| _ => {
-				return Err!(Request(NotJson("JSON body is not valid")));
-			},
-		},
-	}
-
-	// Remove profile pictures and display name
-	let all_joined_rooms: Vec<OwnedRoomId> = services
-		.rooms
-		.state_cache
-		.rooms_joined(sender_user)
-		.map(Into::into)
-		.collect()
-		.await;
-
-	full_user_deactivate(&services, sender_user, &all_joined_rooms)
-		.boxed()
-		.await?;
-
-	info!("User {sender_user} deactivated their account.");
-
-	if services.server.config.admin_room_notices {
-		services
-			.admin
-			.notice(&format!("User {sender_user} deactivated their account."))
-			.await;
-	}
-
-	Ok(deactivate::v3::Response {
-		id_server_unbind_result: ThirdPartyIdRemovalStatus::NoSupport,
-	})
-}
-
-/// # `GET _matrix/client/v3/account/3pid`
-///
-/// Get a list of third party identifiers associated with this account.
-///
-/// - Currently always returns empty list
-pub(crate) async fn third_party_route(
-	body: Ruma<get_3pids::v3::Request>,
-) -> Result<get_3pids::v3::Response> {
-	let _sender_user = body.sender_user.as_ref().expect("user is authenticated");
-
-	Ok(get_3pids::v3::Response::new(Vec::new()))
-}
-
-/// # `POST /_matrix/client/v3/account/3pid/email/requestToken`
-///
-/// "This API should be used to request validation tokens when adding an email
-/// address to an account"
-///
-/// - 403 signals that The homeserver does not allow the third party identifier
-///   as a contact option.
-pub(crate) async fn request_3pid_management_token_via_email_route(
-	_body: Ruma<request_3pid_management_token_via_email::v3::Request>,
-) -> Result<request_3pid_management_token_via_email::v3::Response> {
-	Err!(Request(ThreepidDenied("Third party identifiers are not implemented")))
-}
-
-/// # `POST /_matrix/client/v3/account/3pid/msisdn/requestToken`
-///
-/// "This API should be used to request validation tokens when adding an phone
-/// number to an account"
-///
-/// - 403 signals that The homeserver does not allow the third party identifier
-///   as a contact option.
-pub(crate) async fn request_3pid_management_token_via_msisdn_route(
-	_body: Ruma<request_3pid_management_token_via_msisdn::v3::Request>,
-) -> Result<request_3pid_management_token_via_msisdn::v3::Response> {
-	Err!(Request(ThreepidDenied("Third party identifiers are not implemented")))
-}
-
-/// # `GET /_matrix/client/v1/register/m.login.registration_token/validity`
-///
-/// Checks if the provided registration token is valid at the time of checking.
-pub(crate) async fn check_registration_token_validity(
-	State(services): State<crate::State>,
-	body: Ruma<check_registration_token_validity::v1::Request>,
-) -> Result<check_registration_token_validity::v1::Response> {
-	// TODO: ratelimit this pretty heavily
-
-	let valid = services
-		.registration_tokens
-		.validate_token(body.token.clone())
-		.await
-		.is_some();
-
-	Ok(check_registration_token_validity::v1::Response { valid })
-}
-
-/// Runs through all the deactivation steps:
-///
-/// - Mark as deactivated
-/// - Removing display name
-/// - Removing avatar URL and blurhash
-/// - Removing all profile data
-/// - Leaving all rooms (and forgets all of them)
-pub async fn full_user_deactivate(
-	services: &Services,
-	user_id: &UserId,
-	all_joined_rooms: &[OwnedRoomId],
-) -> Result<()> {
-	services.users.deactivate_account(user_id).await.ok();
-
-	services
-		.users
-		.all_profile_keys(user_id)
-		.ready_for_each(|(profile_key, _)| {
-			services.users.set_profile_key(user_id, &profile_key, None);
-		})
-		.await;
-
-	// TODO: Rescind all user invites
-
-	let mut pdu_queue: Vec<(PduBuilder, &OwnedRoomId)> = Vec::new();
-
-	for room_id in all_joined_rooms {
-		let room_power_levels = services
-			.rooms
-			.state_accessor
-			.room_state_get_content::<RoomPowerLevelsEventContent>(
-				room_id,
-				&StateEventType::RoomPowerLevels,
-				"",
-			)
-			.await
-			.ok();
-
-		let user_can_demote_self =
-			room_power_levels
-				.as_ref()
-				.is_some_and(|power_levels_content| {
-					RoomPowerLevels::from(power_levels_content.clone())
-						.user_can_change_user_power_level(user_id, user_id)
-				}) || services
-				.rooms
-				.state_accessor
-				.room_state_get(room_id, &StateEventType::RoomCreate, "")
-				.await
-				.is_ok_and(|event| event.sender() == user_id);
-
-		if user_can_demote_self {
-			let mut power_levels_content = room_power_levels.unwrap_or_default();
-			power_levels_content.users.remove(user_id);
-			let pl_evt = PduBuilder::state(String::new(), &power_levels_content);
-			pdu_queue.push((pl_evt, room_id));
-		}
-
-		// Leave the room
-		pdu_queue.push((
-			PduBuilder::state(user_id.to_string(), &RoomMemberEventContent {
-				avatar_url: None,
-				blurhash: None,
-				membership: MembershipState::Leave,
-				displayname: None,
-				join_authorized_via_users_server: None,
-				reason: None,
-				is_direct: None,
-				third_party_invite: None,
-				redact_events: None,
-			}),
-			room_id,
-		));
-
-		// TODO: Redact all messages sent by the user in the room
-	}
-
-	super::update_all_rooms(services, pdu_queue, user_id).await;
-	for room_id in all_joined_rooms {
-		services.rooms.state_cache.forget(room_id, user_id);
-	}
-
-	Ok(())
-}

src/api/client/account/mod.rs

@@ -0,0 +1,426 @@
+use axum::extract::State;
+use axum_client_ip::InsecureClientIp;
+use conduwuit::{
+	Err, Event, Result, err, info,
+	pdu::PduBuilder,
+	utils::{ReadyExt, stream::BroadbandExt},
+};
+use conduwuit_service::Services;
+use futures::{FutureExt, StreamExt};
+use lettre::{Address, message::Mailbox};
+use ruma::{
+	OwnedRoomId, OwnedUserId, UserId,
+	api::client::{
+		account::{
+			ThirdPartyIdRemovalStatus, change_password, check_registration_token_validity,
+			deactivate, get_username_availability, request_password_change_token_via_email,
+			whoami,
+		},
+		uiaa::{AuthFlow, AuthType},
+	},
+	events::{
+		StateEventType,
+		room::{
+			member::{MembershipState, RoomMemberEventContent},
+			power_levels::{RoomPowerLevels, RoomPowerLevelsEventContent},
+		},
+	},
+};
+use service::{mailer::messages, uiaa::Identity};
+
+use super::{DEVICE_ID_LENGTH, TOKEN_LENGTH, join_room_by_id_helper};
+use crate::Ruma;
+
+pub(crate) mod register;
+pub(crate) mod threepid;
+
+/// # `GET /_matrix/client/v3/register/available`
+///
+/// Checks if a username is valid and available on this server.
+///
+/// Conditions for returning true:
+/// - The user id is not historical
+/// - The server name of the user id matches this server
+/// - No user or appservice on this server already claimed this username
+///
+/// Note: This will not reserve the username, so the username might become
+/// invalid when trying to register
+#[tracing::instrument(skip_all, fields(%client), name = "register_available", level = "info")]
+pub(crate) async fn get_register_available_route(
+	State(services): State<crate::State>,
+	InsecureClientIp(client): InsecureClientIp,
+	body: Ruma<get_username_availability::v3::Request>,
+) -> Result<get_username_availability::v3::Response> {
+	// Validate user id
+	let user_id =
+		match UserId::parse_with_server_name(&body.username, services.globals.server_name()) {
+			| Ok(user_id) => {
+				if let Err(e) = user_id.validate_strict() {
+					return Err!(Request(InvalidUsername(debug_warn!(
+						"Username {} contains disallowed characters or spaces: {e}",
+						body.username
+					))));
+				}
+
+				user_id
+			},
+			| Err(e) => {
+				return Err!(Request(InvalidUsername(debug_warn!(
+					"Username {} is not valid: {e}",
+					body.username
+				))));
+			},
+		};
+
+	// Check if username is creative enough
+	if services.users.exists(&user_id).await {
+		return Err!(Request(UserInUse("User ID is not available.")));
+	}
+
+	if let Some(ref info) = body.appservice_info {
+		if !info.is_user_match(&user_id) {
+			return Err!(Request(Exclusive("Username is not in an appservice namespace.")));
+		}
+	}
+
+	if services.appservice.is_exclusive_user_id(&user_id).await {
+		return Err!(Request(Exclusive("Username is reserved by an appservice.")));
+	}
+
+	Ok(get_username_availability::v3::Response { available: true })
+}
+
+/// # `POST /_matrix/client/r0/account/password`
+///
+/// Changes the password of this account.
+///
+/// - Requires UIAA to verify user password
+/// - Changes the password of the sender user
+/// - The password hash is calculated using argon2 with 32 character salt, the
+///   plain password is
+/// not saved
+///
+/// If logout_devices is true it does the following for each device except the
+/// sender device:
+/// - Invalidates access token
+/// - Deletes device metadata (device id, device display name, last seen ip,
+///   last seen ts)
+/// - Forgets to-device events
+/// - Triggers device list updates
+#[tracing::instrument(skip_all, fields(%client), name = "change_password", level = "info")]
+pub(crate) async fn change_password_route(
+	State(services): State<crate::State>,
+	InsecureClientIp(client): InsecureClientIp,
+	body: Ruma<change_password::v3::Request>,
+) -> Result<change_password::v3::Response> {
+	let identity = if let Some(ref user_id) = body.sender_user {
+		// A signed-in user is trying to change their password, prompt them for their
+		// existing one
+
+		services
+			.uiaa
+			.authenticate(
+				&body.auth,
+				vec![AuthFlow::new(vec![AuthType::Password])],
+				Box::default(),
+				Some(Identity::from_user_id(user_id)),
+			)
+			.await?
+	} else {
+		// A signed-out user is trying to reset their password, prompt them for email
+		// confirmation. Note that we do not _send_ an email here, their client should
+		// have already hit `/account/password/requestToken` to send the email. We
+		// just validate it.
+
+		services
+			.uiaa
+			.authenticate(
+				&body.auth,
+				vec![AuthFlow::new(vec![AuthType::EmailIdentity])],
+				Box::default(),
+				None,
+			)
+			.await?
+	};
+
+	let sender_user = OwnedUserId::parse(format!(
+		"@{}:{}",
+		identity.localpart.expect("localpart should be known"),
+		services.globals.server_name()
+	))
+	.expect("user ID should be valid");
+
+	services
+		.users
+		.set_password(&sender_user, Some(&body.new_password))
+		.await?;
+
+	if body.logout_devices {
+		// Logout all devices except the current one
+		services
+			.users
+			.all_device_ids(&sender_user)
+			.ready_filter(|id| *id != body.sender_device())
+			.for_each(|id| services.users.remove_device(&sender_user, id))
+			.await;
+
+		// Remove all pushers except the ones associated with this session
+		services
+			.pusher
+			.get_pushkeys(&sender_user)
+			.map(ToOwned::to_owned)
+			.broad_filter_map(async |pushkey| {
+				services
+					.pusher
+					.get_pusher_device(&pushkey)
+					.await
+					.ok()
+					.filter(|pusher_device| pusher_device != body.sender_device())
+					.is_some()
+					.then_some(pushkey)
+			})
+			.for_each(async |pushkey| {
+				services.pusher.delete_pusher(&sender_user, &pushkey).await;
+			})
+			.await;
+	}
+
+	info!("User {} changed their password.", &sender_user);
+
+	if services.server.config.admin_room_notices {
+		services
+			.admin
+			.notice(&format!("User {} changed their password.", &sender_user))
+			.await;
+	}
+
+	Ok(change_password::v3::Response {})
+}
+
+/// # `POST /_matrix/client/v3/account/password/email/requestToken`
+///
+/// Requests a validation email for the purpose of resetting a user's password.
+pub(crate) async fn request_password_change_token_via_email_route(
+	State(services): State<crate::State>,
+	body: Ruma<request_password_change_token_via_email::v3::Request>,
+) -> Result<request_password_change_token_via_email::v3::Response> {
+	let Ok(email) = Address::try_from(body.email.clone()) else {
+		return Err!(Request(InvalidParam("Invalid email address.")));
+	};
+
+	let Some(localpart) = services.threepid.get_localpart_for_email(&email).await else {
+		return Err!(Request(ThreepidNotFound(
+			"No account is associated with this email address"
+		)));
+	};
+
+	let user_id =
+		OwnedUserId::parse(format!("@{localpart}:{}", services.globals.server_name())).unwrap();
+	let display_name = services.users.displayname(&user_id).await.ok();
+
+	let session = services
+		.threepid
+		.send_validation_email(
+			Mailbox::new(display_name.clone(), email),
+			|verification_link| messages::PasswordReset {
+				display_name: display_name.as_deref(),
+				user_id: &user_id,
+				verification_link,
+			},
+			&body.client_secret,
+			body.send_attempt.try_into().unwrap(),
+		)
+		.await?;
+
+	Ok(request_password_change_token_via_email::v3::Response::new(session))
+}
+
+/// # `GET /_matrix/client/v3/account/whoami`
+///
+/// Get `user_id` of the sender user.
+///
+/// Note: Also works for Application Services
+pub(crate) async fn whoami_route(
+	State(services): State<crate::State>,
+	body: Ruma<whoami::v3::Request>,
+) -> Result<whoami::v3::Response> {
+	let is_guest = services
+		.users
+		.is_deactivated(body.sender_user())
+		.await
+		.map_err(|_| {
+			err!(Request(Forbidden("Application service has not registered this user.")))
+		})? && body.appservice_info.is_none();
+	Ok(whoami::v3::Response {
+		user_id: body.sender_user().to_owned(),
+		device_id: body.sender_device.clone(),
+		is_guest,
+	})
+}
+
+/// # `POST /_matrix/client/r0/account/deactivate`
+///
+/// Deactivate sender user account.
+///
+/// - Leaves all rooms and rejects all invitations
+/// - Invalidates all access tokens
+/// - Deletes all device metadata (device id, device display name, last seen ip,
+///   last seen ts)
+/// - Forgets all to-device events
+/// - Triggers device list updates
+/// - Removes ability to log in again
+#[tracing::instrument(skip_all, fields(%client), name = "deactivate", level = "info")]
+pub(crate) async fn deactivate_route(
+	State(services): State<crate::State>,
+	InsecureClientIp(client): InsecureClientIp,
+	body: Ruma<deactivate::v3::Request>,
+) -> Result<deactivate::v3::Response> {
+	// Authentication for this endpoint is technically optional,
+	// but we require the user to be logged in
+	let sender_user = body
+		.sender_user
+		.as_ref()
+		.ok_or_else(|| err!(Request(MissingToken("Missing access token."))))?;
+
+	// Prompt the user to confirm with their password using UIAA
+	let _ = services
+		.uiaa
+		.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
+		.await?;
+
+	// Remove profile pictures and display name
+	let all_joined_rooms: Vec<OwnedRoomId> = services
+		.rooms
+		.state_cache
+		.rooms_joined(sender_user)
+		.map(Into::into)
+		.collect()
+		.await;
+
+	full_user_deactivate(&services, sender_user, &all_joined_rooms)
+		.boxed()
+		.await?;
+
+	info!("User {sender_user} deactivated their account.");
+
+	if services.server.config.admin_room_notices {
+		services
+			.admin
+			.notice(&format!("User {sender_user} deactivated their account."))
+			.await;
+	}
+
+	Ok(deactivate::v3::Response {
+		id_server_unbind_result: ThirdPartyIdRemovalStatus::Success,
+	})
+}
+
+/// # `GET /_matrix/client/v1/register/m.login.registration_token/validity`
+///
+/// Checks if the provided registration token is valid at the time of checking.
+pub(crate) async fn check_registration_token_validity(
+	State(services): State<crate::State>,
+	body: Ruma<check_registration_token_validity::v1::Request>,
+) -> Result<check_registration_token_validity::v1::Response> {
+	// TODO: ratelimit this pretty heavily
+
+	let valid = services
+		.registration_tokens
+		.validate_token(body.token.clone())
+		.await
+		.is_some();
+
+	Ok(check_registration_token_validity::v1::Response { valid })
+}
+
+/// Runs through all the deactivation steps:
+///
+/// - Mark as deactivated
+/// - Removing display name
+/// - Removing avatar URL and blurhash
+/// - Removing all profile data
+/// - Leaving all rooms (and forgets all of them)
+pub async fn full_user_deactivate(
+	services: &Services,
+	user_id: &UserId,
+	all_joined_rooms: &[OwnedRoomId],
+) -> Result<()> {
+	services.users.deactivate_account(user_id).await.ok();
+
+	if services.globals.user_is_local(user_id) {
+		let _ = services
+			.threepid
+			.disassociate_localpart_email(user_id.localpart())
+			.await;
+	}
+
+	services
+		.users
+		.all_profile_keys(user_id)
+		.ready_for_each(|(profile_key, _)| {
+			services.users.set_profile_key(user_id, &profile_key, None);
+		})
+		.await;
+
+	// TODO: Rescind all user invites
+
+	let mut pdu_queue: Vec<(PduBuilder, &OwnedRoomId)> = Vec::new();
+
+	for room_id in all_joined_rooms {
+		let room_power_levels = services
+			.rooms
+			.state_accessor
+			.room_state_get_content::<RoomPowerLevelsEventContent>(
+				room_id,
+				&StateEventType::RoomPowerLevels,
+				"",
+			)
+			.await
+			.ok();
+
+		let user_can_demote_self =
+			room_power_levels
+				.as_ref()
+				.is_some_and(|power_levels_content| {
+					RoomPowerLevels::from(power_levels_content.clone())
+						.user_can_change_user_power_level(user_id, user_id)
+				}) || services
+				.rooms
+				.state_accessor
+				.room_state_get(room_id, &StateEventType::RoomCreate, "")
+				.await
+				.is_ok_and(|event| event.sender() == user_id);
+
+		if user_can_demote_self {
+			let mut power_levels_content = room_power_levels.unwrap_or_default();
+			power_levels_content.users.remove(user_id);
+			let pl_evt = PduBuilder::state(String::new(), &power_levels_content);
+			pdu_queue.push((pl_evt, room_id));
+		}
+
+		// Leave the room
+		pdu_queue.push((
+			PduBuilder::state(user_id.to_string(), &RoomMemberEventContent {
+				avatar_url: None,
+				blurhash: None,
+				membership: MembershipState::Leave,
+				displayname: None,
+				join_authorized_via_users_server: None,
+				reason: None,
+				is_direct: None,
+				third_party_invite: None,
+				redact_events: None,
+			}),
+			room_id,
+		));
+
+		// TODO: Redact all messages sent by the user in the room
+	}
+
+	super::update_all_rooms(services, pdu_queue, user_id).await;
+	for room_id in all_joined_rooms {
+		services.rooms.state_cache.forget(room_id, user_id);
+	}
+
+	Ok(())
+}

src/api/client/account/register.rs

@@ -0,0 +1,601 @@
+use std::{collections::HashMap, fmt::Write};
+
+use axum::extract::State;
+use axum_client_ip::InsecureClientIp;
+use conduwuit::{
+	Err, Result, debug_info, error, info,
+	utils::{self},
+	warn,
+};
+use conduwuit_service::Services;
+use futures::{FutureExt, StreamExt};
+use lettre::{Address, message::Mailbox};
+use register::RegistrationKind;
+use ruma::{
+	OwnedUserId, UserId,
+	api::client::{
+		account::{
+			register::{self, LoginType},
+			request_registration_token_via_email,
+		},
+		uiaa::{AuthFlow, AuthType},
+	},
+	events::{GlobalAccountDataEventType, room::message::RoomMessageEventContent},
+	push,
+};
+use serde_json::value::RawValue;
+use service::mailer::messages;
+
+use super::{DEVICE_ID_LENGTH, TOKEN_LENGTH, join_room_by_id_helper};
+use crate::Ruma;
+
+const RANDOM_USER_ID_LENGTH: usize = 10;
+
+/// # `POST /_matrix/client/v3/register`
+///
+/// Register an account on this homeserver.
+///
+/// You can use [`GET
+/// /_matrix/client/v3/register/available`](fn.get_register_available_route.
+/// html) to check if the user id is valid and available.
+///
+/// - Only works if registration is enabled
+/// - If type is guest: ignores all parameters except
+///   initial_device_display_name
+/// - If sender is not appservice: Requires UIAA (but we only use a dummy stage)
+/// - If type is not guest and no username is given: Always fails after UIAA
+///   check
+/// - Creates a new account and populates it with default account data
+/// - If `inhibit_login` is false: Creates a device and returns device id and
+///   access_token
+#[allow(clippy::doc_markdown)]
+#[tracing::instrument(skip_all, fields(%client), name = "register", level = "info")]
+pub(crate) async fn register_route(
+	State(services): State<crate::State>,
+	InsecureClientIp(client): InsecureClientIp,
+	body: Ruma<register::v3::Request>,
+) -> Result<register::v3::Response> {
+	let is_guest = body.kind == RegistrationKind::Guest;
+	let emergency_mode_enabled = services.config.emergency_password.is_some();
+
+	// Allow registration if it's enabled in the config file or if this is the first
+	// run (so the first user account can be created)
+	let allow_registration =
+		services.config.allow_registration || services.firstrun.is_first_run();
+
+	if !allow_registration && body.appservice_info.is_none() {
+		match (body.username.as_ref(), body.initial_device_display_name.as_ref()) {
+			| (Some(username), Some(device_display_name)) => {
+				info!(
+					%is_guest,
+					user = %username,
+					device_name = %device_display_name,
+					"Rejecting registration attempt as registration is disabled"
+				);
+			},
+			| (Some(username), _) => {
+				info!(
+					%is_guest,
+					user = %username,
+					"Rejecting registration attempt as registration is disabled"
+				);
+			},
+			| (_, Some(device_display_name)) => {
+				info!(
+					%is_guest,
+					device_name = %device_display_name,
+					"Rejecting registration attempt as registration is disabled"
+				);
+			},
+			| (None, _) => {
+				info!(
+					%is_guest,
+					"Rejecting registration attempt as registration is disabled"
+				);
+			},
+		}
+
+		return Err!(Request(Forbidden(
+			"This server is not accepting registrations at this time."
+		)));
+	}
+
+	if is_guest && !services.config.allow_guest_registration {
+		info!(
+			"Guest registration disabled, rejecting guest registration attempt, initial device \
+			 name: \"{}\"",
+			body.initial_device_display_name.as_deref().unwrap_or("")
+		);
+		return Err!(Request(GuestAccessForbidden("Guest registration is disabled.")));
+	}
+
+	// forbid guests from registering if there is not a real admin user yet. give
+	// generic user error.
+	if is_guest && services.firstrun.is_first_run() {
+		warn!(
+			"Guest account attempted to register before a real admin user has been registered, \
+			 rejecting registration. Guest's initial device name: \"{}\"",
+			body.initial_device_display_name.as_deref().unwrap_or("")
+		);
+		return Err!(Request(Forbidden(
+			"This server is not accepting registrations at this time."
+		)));
+	}
+
+	// Appeservices and guests get to skip auth
+	let skip_auth = body.appservice_info.is_some() || is_guest;
+
+	let identity = if skip_auth {
+		// Appservices and guests have no identity
+		None
+	} else {
+		// Perform UIAA to determine the user's identity
+		let (flows, params) = create_registration_uiaa_session(&services).await?;
+
+		Some(
+			services
+				.uiaa
+				.authenticate(&body.auth, flows, params, None)
+				.await?,
+		)
+	};
+
+	// If the user didn't supply a username but did supply an email, use
+	// the email's user as their initial localpart to avoid falling back to
+	// a randomly generated localpart
+	let supplied_username = body.username.clone().or_else(|| {
+		if let Some(identity) = &identity
+			&& let Some(email) = &identity.email
+		{
+			Some(email.user().to_owned())
+		} else {
+			None
+		}
+	});
+
+	let user_id = determine_registration_user_id(
+		&services,
+		supplied_username,
+		is_guest,
+		emergency_mode_enabled,
+	)
+	.await?;
+
+	if body.body.login_type == Some(LoginType::ApplicationService) {
+		// For appservice logins, make sure that the user ID is in the appservice's
+		// namespace
+
+		match body.appservice_info {
+			| Some(ref info) =>
+				if !info.is_user_match(&user_id) && !emergency_mode_enabled {
+					return Err!(Request(Exclusive(
+						"Username is not in an appservice namespace."
+					)));
+				},
+			| _ => {
+				return Err!(Request(MissingToken("Missing appservice token.")));
+			},
+		}
+	} else if services.appservice.is_exclusive_user_id(&user_id).await && !emergency_mode_enabled
+	{
+		// For non-appservice logins, ban user IDs which are in an appservice's
+		// namespace (unless emergency mode is enabled)
+		return Err!(Request(Exclusive("Username is reserved by an appservice.")));
+	}
+
+	let password = if is_guest { None } else { body.password.as_deref() };
+
+	// Create user
+	services.users.create(&user_id, password, None).await?;
+
+	// Set an initial display name
+	let mut displayname = user_id.localpart().to_owned();
+
+	// Apply the new user displayname suffix, if it's set
+	if !services.globals.new_user_displayname_suffix().is_empty()
+		&& body.appservice_info.is_none()
+	{
+		write!(displayname, " {}", services.server.config.new_user_displayname_suffix)?;
+	}
+
+	services
+		.users
+		.set_displayname(&user_id, Some(displayname.clone()));
+
+	// Initial account data
+	services
+		.account_data
+		.update(
+			None,
+			&user_id,
+			GlobalAccountDataEventType::PushRules.to_string().into(),
+			&serde_json::to_value(ruma::events::push_rules::PushRulesEvent {
+				content: ruma::events::push_rules::PushRulesEventContent {
+					global: push::Ruleset::server_default(&user_id),
+				},
+			})?,
+		)
+		.await?;
+
+	// Generate new device id if the user didn't specify one
+	let no_device = body.inhibit_login
+		|| body
+			.appservice_info
+			.as_ref()
+			.is_some_and(|aps| aps.registration.device_management);
+
+	let (token, device) = if !no_device {
+		// Don't create a device for inhibited logins
+		let device_id = if is_guest { None } else { body.device_id.clone() }
+			.unwrap_or_else(|| utils::random_string(DEVICE_ID_LENGTH).into());
+
+		// Generate new token for the device
+		let new_token = utils::random_string(TOKEN_LENGTH);
+
+		// Create device for this account
+		services
+			.users
+			.create_device(
+				&user_id,
+				&device_id,
+				&new_token,
+				body.initial_device_display_name.clone(),
+				Some(client.to_string()),
+			)
+			.await?;
+		debug_info!(%user_id, %device_id, "User account was created");
+		(Some(new_token), Some(device_id))
+	} else {
+		(None, None)
+	};
+
+	// If the user registered with an email, associate it with their account.
+	if let Some(identity) = identity
+		&& let Some(email) = identity.email
+	{
+		// This may fail if the email is already in use, but we already check for that
+		// in `/requestToken`, so ignoring the error is acceptable here in the rare case
+		// that an email is sniped by another user between the `/requestToken` request
+		// and the `/register` request.
+		let _ = services
+			.threepid
+			.associate_localpart_email(user_id.localpart(), &email)
+			.await;
+	}
+
+	let device_display_name = body.initial_device_display_name.as_deref().unwrap_or("");
+
+	// log in conduit admin channel if a non-guest user registered
+	if body.appservice_info.is_none() && !is_guest {
+		if !device_display_name.is_empty() {
+			let notice = format!(
+				"New user \"{user_id}\" registered on this server from IP {client} and device \
+				 display name \"{device_display_name}\""
+			);
+
+			info!("{notice}");
+			if services.server.config.admin_room_notices {
+				services.admin.notice(&notice).await;
+			}
+		} else {
+			let notice = format!("New user \"{user_id}\" registered on this server.");
+
+			info!("{notice}");
+			if services.server.config.admin_room_notices {
+				services.admin.notice(&notice).await;
+			}
+		}
+	}
+
+	// log in conduit admin channel if a guest registered
+	if body.appservice_info.is_none() && is_guest && services.config.log_guest_registrations {
+		debug_info!("New guest user \"{user_id}\" registered on this server.");
+
+		if !device_display_name.is_empty() {
+			if services.server.config.admin_room_notices {
+				services
+					.admin
+					.notice(&format!(
+						"Guest user \"{user_id}\" with device display name \
+						 \"{device_display_name}\" registered on this server from IP {client}"
+					))
+					.await;
+			}
+		} else {
+			#[allow(clippy::collapsible_else_if)]
+			if services.server.config.admin_room_notices {
+				services
+					.admin
+					.notice(&format!(
+						"Guest user \"{user_id}\" with no device display name registered on \
+						 this server from IP {client}",
+					))
+					.await;
+			}
+		}
+	}
+
+	if !is_guest {
+		// Make the first user to register an administrator and disable first-run mode.
+		let was_first_user = services.firstrun.empower_first_user(&user_id).await?;
+
+		// If the registering user was not the first and we're suspending users on
+		// register, suspend them.
+		if !was_first_user && services.config.suspend_on_register {
+			// Note that we can still do auto joins for suspended users
+			services
+				.users
+				.suspend_account(&user_id, &services.globals.server_user)
+				.await;
+			// And send an @room notice to the admin room, to prompt admins to review the
+			// new user and ideally unsuspend them if deemed appropriate.
+			if services.server.config.admin_room_notices {
+				services
+					.admin
+					.send_loud_message(RoomMessageEventContent::text_plain(format!(
+						"User {user_id} has been suspended as they are not the first user on \
+						 this server. Please review and unsuspend them if appropriate."
+					)))
+					.await
+					.ok();
+			}
+		}
+	}
+
+	if body.appservice_info.is_none()
+		&& !services.server.config.auto_join_rooms.is_empty()
+		&& (services.config.allow_guests_auto_join_rooms || !is_guest)
+	{
+		for room in &services.server.config.auto_join_rooms {
+			let Ok(room_id) = services.rooms.alias.resolve(room).await else {
+				error!(
+					"Failed to resolve room alias to room ID when attempting to auto join \
+					 {room}, skipping"
+				);
+				continue;
+			};
+
+			if !services
+				.rooms
+				.state_cache
+				.server_in_room(services.globals.server_name(), &room_id)
+				.await
+			{
+				warn!(
+					"Skipping room {room} to automatically join as we have never joined before."
+				);
+				continue;
+			}
+
+			if let Some(room_server_name) = room.server_name() {
+				match join_room_by_id_helper(
+					&services,
+					&user_id,
+					&room_id,
+					Some("Automatically joining this room upon registration".to_owned()),
+					&[services.globals.server_name().to_owned(), room_server_name.to_owned()],
+					&body.appservice_info,
+				)
+				.boxed()
+				.await
+				{
+					| Err(e) => {
+						// don't return this error so we don't fail registrations
+						error!(
+							"Failed to automatically join room {room} for user {user_id}: {e}"
+						);
+					},
+					| _ => {
+						info!("Automatically joined room {room} for user {user_id}");
+					},
+				}
+			}
+		}
+	}
+
+	Ok(register::v3::Response {
+		access_token: token,
+		user_id,
+		device_id: device,
+		refresh_token: None,
+		expires_in: None,
+	})
+}
+
+/// Determine which flows and parameters should be presented when
+/// registering a new account.
+async fn create_registration_uiaa_session(
+	services: &Services,
+) -> Result<(Vec<AuthFlow>, Box<RawValue>)> {
+	let mut params = HashMap::<String, serde_json::Value>::new();
+
+	let flows = if services.firstrun.is_first_run() {
+		// Registration token forced while in first-run mode
+		vec![AuthFlow::new(vec![AuthType::RegistrationToken])]
+	} else {
+		let mut flows = vec![];
+
+		if services
+			.registration_tokens
+			.iterate_tokens()
+			.next()
+			.await
+			.is_some()
+		{
+			// Trusted registration flow with a token is available
+			let mut token_flow = AuthFlow::new(vec![AuthType::RegistrationToken]);
+
+			if let Some(smtp) = &services.config.smtp
+				&& smtp.require_email_for_token_registration
+			{
+				// Email is required for token registrations
+				token_flow.stages.push(AuthType::EmailIdentity);
+			}
+
+			flows.push(token_flow);
+		}
+
+		let mut untrusted_flow = AuthFlow::default();
+
+		if services.config.recaptcha_private_site_key.is_some() {
+			if let Some(pubkey) = &services.config.recaptcha_site_key {
+				// ReCaptcha is configured for untrusted registrations
+				untrusted_flow.stages.push(AuthType::ReCaptcha);
+
+				params.insert(
+					AuthType::ReCaptcha.as_str().to_owned(),
+					serde_json::json!({
+						"public_key": pubkey,
+					}),
+				);
+			}
+		}
+
+		if let Some(smtp) = &services.config.smtp
+			&& smtp.require_email_for_registration
+		{
+			// Email is required for untrusted registrations
+			untrusted_flow.stages.push(AuthType::EmailIdentity);
+		}
+
+		if !untrusted_flow.stages.is_empty() {
+			flows.push(untrusted_flow);
+		}
+
+		if flows.is_empty() {
+			// No flows are configured. Bail out by default
+			// unless open registration was explicitly enabled.
+			if !services
+				.config
+				.yes_i_am_very_very_sure_i_want_an_open_registration_server_prone_to_abuse
+			{
+				return Err!(Request(Forbidden(
+					"This server is not accepting registrations at this time."
+				)));
+			}
+
+			// We have open registration enabled (😧), provide a dummy flow
+			flows.push(AuthFlow::new(vec![AuthType::Dummy]));
+		}
+
+		flows
+	};
+
+	let params = serde_json::value::to_raw_value(&params).expect("params should be valid JSON");
+
+	Ok((flows, params))
+}
+
+async fn determine_registration_user_id(
+	services: &Services,
+	supplied_username: Option<String>,
+	is_guest: bool,
+	emergency_mode_enabled: bool,
+) -> Result<OwnedUserId> {
+	if let Some(supplied_username) = supplied_username
+		&& !is_guest
+	{
+		// The user gets to pick their username. Do some validation to make sure it's
+		// acceptable.
+
+		// Don't allow registration with forbidden usernames.
+		if services
+			.globals
+			.forbidden_usernames()
+			.is_match(&supplied_username)
+			&& !emergency_mode_enabled
+		{
+			return Err!(Request(Forbidden("Username is forbidden")));
+		}
+
+		// Create and validate the user ID
+		let user_id = match UserId::parse_with_server_name(
+			&supplied_username,
+			services.globals.server_name(),
+		) {
+			| Ok(user_id) => {
+				if let Err(e) = user_id.validate_strict() {
+					// Unless we are in emergency mode, we should follow synapse's behaviour on
+					// not allowing things like spaces and UTF-8 characters in usernames
+					if !emergency_mode_enabled {
+						return Err!(Request(InvalidUsername(debug_warn!(
+							"Username {supplied_username} contains disallowed characters or \
+							 spaces: {e}"
+						))));
+					}
+				}
+
+				// Don't allow registration with user IDs that aren't local
+				if !services.globals.user_is_local(&user_id) {
+					return Err!(Request(InvalidUsername(
+						"Username {supplied_username} is not local to this server"
+					)));
+				}
+
+				user_id
+			},
+			| Err(e) => {
+				return Err!(Request(InvalidUsername(debug_warn!(
+					"Username {supplied_username} is not valid: {e}"
+				))));
+			},
+		};
+
+		if services.users.exists(&user_id).await {
+			return Err!(Request(UserInUse("User ID is not available.")));
+		}
+
+		Ok(user_id)
+	} else {
+		// The user is a guest or didn't specify a username. Generate a username for
+		// them.
+
+		loop {
+			let user_id = UserId::parse_with_server_name(
+				utils::random_string(RANDOM_USER_ID_LENGTH).to_lowercase(),
+				services.globals.server_name(),
+			)
+			.unwrap();
+
+			if !services.users.exists(&user_id).await {
+				break Ok(user_id);
+			}
+		}
+	}
+}
+
+/// # `POST /_matrix/client/v3/register/email/requestToken`
+///
+/// Requests a validation email for the purpose of registering a new account.
+pub(crate) async fn request_registration_token_via_email_route(
+	State(services): State<crate::State>,
+	body: Ruma<request_registration_token_via_email::v3::Request>,
+) -> Result<request_registration_token_via_email::v3::Response> {
+	let Ok(email) = Address::try_from(body.email.clone()) else {
+		return Err!(Request(InvalidParam("Invalid email address.")));
+	};
+
+	if services
+		.threepid
+		.get_localpart_for_email(&email)
+		.await
+		.is_some()
+	{
+		return Err!(Request(ThreepidInUse("This email address is already in use.")));
+	}
+
+	let session = services
+		.threepid
+		.send_validation_email(
+			Mailbox::new(None, email),
+			|verification_link| messages::NewAccount {
+				server_name: services.config.server_name.as_ref(),
+				verification_link,
+			},
+			&body.client_secret,
+			body.send_attempt.try_into().unwrap(),
+		)
+		.await?;
+
+	Ok(request_registration_token_via_email::v3::Response::new(session))
+}

src/api/client/account/threepid.rs

@@ -0,0 +1,153 @@
+use std::time::SystemTime;
+
+use axum::extract::State;
+use conduwuit::{Err, Result, err};
+use lettre::{Address, message::Mailbox};
+use ruma::{
+	MilliSecondsSinceUnixEpoch,
+	api::client::account::{
+		ThirdPartyIdRemovalStatus, add_3pid, delete_3pid, get_3pids,
+		request_3pid_management_token_via_email, request_3pid_management_token_via_msisdn,
+	},
+	thirdparty::{Medium, ThirdPartyIdentifierInit},
+};
+use service::{mailer::messages, uiaa::Identity};
+
+use crate::Ruma;
+
+/// # `GET _matrix/client/v3/account/3pid`
+///
+/// Get a list of third party identifiers associated with this account.
+pub(crate) async fn third_party_route(
+	State(services): State<crate::State>,
+	body: Ruma<get_3pids::v3::Request>,
+) -> Result<get_3pids::v3::Response> {
+	let sender_user = body.sender_user();
+	let mut threepids = vec![];
+
+	if let Some(email) = services
+		.threepid
+		.get_email_for_localpart(sender_user.localpart())
+		.await
+	{
+		threepids.push(
+			ThirdPartyIdentifierInit {
+				address: email.to_string(),
+				medium: Medium::Email,
+				// We don't currently track these, and they aren't used for much
+				validated_at: MilliSecondsSinceUnixEpoch::now(),
+				added_at: MilliSecondsSinceUnixEpoch::from_system_time(SystemTime::UNIX_EPOCH)
+					.unwrap(),
+			}
+			.into(),
+		);
+	}
+
+	Ok(get_3pids::v3::Response::new(threepids))
+}
+
+/// # `POST /_matrix/client/v3/account/3pid/email/requestToken`
+///
+/// Requests a validation email for the purpose of changing an account's email.
+pub(crate) async fn request_3pid_management_token_via_email_route(
+	State(services): State<crate::State>,
+	body: Ruma<request_3pid_management_token_via_email::v3::Request>,
+) -> Result<request_3pid_management_token_via_email::v3::Response> {
+	let Ok(email) = Address::try_from(body.email.clone()) else {
+		return Err!(Request(InvalidParam("Invalid email address.")));
+	};
+
+	if services
+		.threepid
+		.get_localpart_for_email(&email)
+		.await
+		.is_some()
+	{
+		return Err!(Request(ThreepidInUse("This email address is already in use.")));
+	}
+
+	let session = services
+		.threepid
+		.send_validation_email(
+			Mailbox::new(None, email),
+			|verification_link| messages::ChangeEmail {
+				server_name: services.config.server_name.as_str(),
+				user_id: body.sender_user.as_deref(),
+				verification_link,
+			},
+			&body.client_secret,
+			body.send_attempt.try_into().unwrap(),
+		)
+		.await?;
+
+	Ok(request_3pid_management_token_via_email::v3::Response::new(session))
+}
+
+/// # `POST /_matrix/client/v3/account/3pid/msisdn/requestToken`
+///
+/// "This API should be used to request validation tokens when adding an email
+/// address to an account"
+///
+/// - 403 signals that The homeserver does not allow the third party identifier
+///   as a contact option.
+pub(crate) async fn request_3pid_management_token_via_msisdn_route(
+	_body: Ruma<request_3pid_management_token_via_msisdn::v3::Request>,
+) -> Result<request_3pid_management_token_via_msisdn::v3::Response> {
+	Err!(Request(ThreepidMediumNotSupported(
+		"MSISDN third-party identifiers are not supported."
+	)))
+}
+
+/// # `POST /_matrix/client/v3/account/3pid/add`
+pub(crate) async fn add_3pid_route(
+	State(services): State<crate::State>,
+	body: Ruma<add_3pid::v3::Request>,
+) -> Result<add_3pid::v3::Response> {
+	let sender_user = body.sender_user();
+
+	// Require password auth to add an email
+	let _ = services
+		.uiaa
+		.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
+		.await?;
+
+	let email = services
+		.threepid
+		.consume_valid_session(&body.sid, &body.client_secret)
+		.await
+		.map_err(|message| err!(Request(ThreepidAuthFailed("{message}"))))?;
+
+	services
+		.threepid
+		.associate_localpart_email(sender_user.localpart(), &email)
+		.await?;
+
+	Ok(add_3pid::v3::Response::new())
+}
+
+/// # `POST /_matrix/client/v3/account/3pid/delete`
+pub(crate) async fn delete_3pid_route(
+	State(services): State<crate::State>,
+	body: Ruma<delete_3pid::v3::Request>,
+) -> Result<delete_3pid::v3::Response> {
+	let sender_user = body.sender_user();
+
+	if body.medium != Medium::Email {
+		return Ok(delete_3pid::v3::Response {
+			id_server_unbind_result: ThirdPartyIdRemovalStatus::NoSupport,
+		});
+	}
+
+	if services
+		.threepid
+		.disassociate_localpart_email(sender_user.localpart())
+		.await
+		.is_none()
+	{
+		return Err!(Request(ThreepidNotFound("Your account has no associated email.")));
+	}
+
+	Ok(delete_3pid::v3::Response {
+		id_server_unbind_result: ThirdPartyIdRemovalStatus::Success,
+	})
+}

src/api/client/capabilities.rs

@@ -30,8 +30,10 @@ pub(crate) async fn get_capabilities_route(
 		default: services.server.config.default_room_version.clone(),
 	};
 
-	// we do not implement 3PID stuff
+	// Only allow 3pid changes if SMTP is configured
-	capabilities.thirdparty_id_changes = ThirdPartyIdChangesCapability { enabled: false };
+	capabilities.thirdparty_id_changes = ThirdPartyIdChangesCapability {
+		enabled: services.mailer.mailer().is_some(),
+	};
 
 	capabilities.get_login_token = GetLoginTokenCapability {
 		enabled: services.server.config.login_via_existing_session,
@@ -51,7 +53,7 @@ pub(crate) async fn get_capabilities_route(
 		.await
 	{
 		// Advertise suspension API
-		capabilities.set("uk.timedout.msc4323", json!({"suspend":true, "lock": false}))?;
+		capabilities.set("uk.timedout.msc4323", json!({"suspend": true, "lock": false}))?;
 	}
 
 	Ok(get_capabilities::v3::Response { capabilities })

src/api/client/device.rs

@@ -1,17 +1,15 @@
 use axum::extract::State;
 use axum_client_ip::InsecureClientIp;
-use conduwuit::{Err, Error, Result, debug, err, utils};
+use conduwuit::{Err, Result, debug, err, utils};
 use futures::StreamExt;
 use ruma::{
 	MilliSecondsSinceUnixEpoch, OwnedDeviceId,
-	api::client::{
+	api::client::device::{
-		device::{self, delete_device, delete_devices, get_device, get_devices, update_device},
+		self, delete_device, delete_devices, get_device, get_devices, update_device,
-		error::ErrorKind,
-		uiaa::{AuthFlow, AuthType, UiaaInfo},
 	},
 };
+use service::uiaa::Identity;
 
-use super::SESSION_ID_LENGTH;
 use crate::{Ruma, client::DEVICE_ID_LENGTH};
 
 /// # `GET /_matrix/client/r0/devices`
@@ -123,7 +121,7 @@ pub(crate) async fn delete_device_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_device::v3::Request>,
 ) -> Result<delete_device::v3::Response> {
-	let (sender_user, sender_device) = body.sender();
+	let sender_user = body.sender_user();
 	let appservice = body.appservice_info.as_ref();
 
 	if appservice.is_some_and(|appservice| appservice.registration.device_management) {
@@ -139,41 +137,11 @@ pub(crate) async fn delete_device_route(
 		return Ok(delete_device::v3::Response {});
 	}
 
-	// UIAA
+	// Prompt the user to confirm with their password using UIAA
-	let mut uiaainfo = UiaaInfo {
+	let _ = services
-		flows: vec![AuthFlow { stages: vec![AuthType::Password] }],
+		.uiaa
-		completed: Vec::new(),
+		.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
-		params: Box::default(),
+		.await?;
-		session: None,
-		auth_error: None,
-	};
-
-	match &body.auth {
-		| Some(auth) => {
-			let (worked, uiaainfo) = services
-				.uiaa
-				.try_auth(sender_user, sender_device, auth, &uiaainfo)
-				.await?;
-
-			if !worked {
-				return Err!(Uiaa(uiaainfo));
-			}
-			// Success!
-		},
-		| _ => match body.json_body {
-			| Some(ref json) => {
-				uiaainfo.session = Some(utils::random_string(SESSION_ID_LENGTH));
-				services
-					.uiaa
-					.create(sender_user, sender_device, &uiaainfo, json);
-
-				return Err!(Uiaa(uiaainfo));
-			},
-			| _ => {
-				return Err!(Request(NotJson("Not json.")));
-			},
-		},
-	}
 
 	services
 		.users
@@ -200,7 +168,7 @@ pub(crate) async fn delete_devices_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_devices::v3::Request>,
 ) -> Result<delete_devices::v3::Response> {
-	let (sender_user, sender_device) = body.sender();
+	let sender_user = body.sender_user();
 	let appservice = body.appservice_info.as_ref();
 
 	if appservice.is_some_and(|appservice| appservice.registration.device_management) {
@@ -215,41 +183,11 @@ pub(crate) async fn delete_devices_route(
 		return Ok(delete_devices::v3::Response {});
 	}
 
-	// UIAA
+	// Prompt the user to confirm with their password using UIAA
-	let mut uiaainfo = UiaaInfo {
+	let _ = services
-		flows: vec![AuthFlow { stages: vec![AuthType::Password] }],
+		.uiaa
-		completed: Vec::new(),
+		.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
-		params: Box::default(),
+		.await?;
-		session: None,
-		auth_error: None,
-	};
-
-	match &body.auth {
-		| Some(auth) => {
-			let (worked, uiaainfo) = services
-				.uiaa
-				.try_auth(sender_user, sender_device, auth, &uiaainfo)
-				.await?;
-
-			if !worked {
-				return Err(Error::Uiaa(uiaainfo));
-			}
-			// Success!
-		},
-		| _ => match body.json_body {
-			| Some(ref json) => {
-				uiaainfo.session = Some(utils::random_string(SESSION_ID_LENGTH));
-				services
-					.uiaa
-					.create(sender_user, sender_device, &uiaainfo, json);
-
-				return Err(Error::Uiaa(uiaainfo));
-			},
-			| _ => {
-				return Err(Error::BadRequest(ErrorKind::NotJson, "Not json."));
-			},
-		},
-	}
 
 	for device_id in &body.devices {
 		services.users.remove_device(sender_user, device_id).await;

src/api/client/keys.rs

@@ -7,7 +7,6 @@ use axum::extract::State;
 use conduwuit::{
 	Err, Error, Result, debug, debug_warn, err,
 	result::NotFound,
-	utils,
 	utils::{IterStream, stream::WidebandExt},
 };
 use conduwuit_service::{Services, users::parse_master_key};
@@ -22,7 +21,6 @@ use ruma::{
 				upload_signatures::{self},
 				upload_signing_keys,
 			},
-			uiaa::{AuthFlow, AuthType, UiaaInfo},
 		},
 		federation,
 	},
@@ -30,8 +28,8 @@ use ruma::{
 	serde::Raw,
 };
 use serde_json::json;
+use service::uiaa::Identity;
 
-use super::SESSION_ID_LENGTH;
 use crate::Ruma;
 
 /// # `POST /_matrix/client/r0/keys/upload`
@@ -174,16 +172,7 @@ pub(crate) async fn upload_signing_keys_route(
 	State(services): State<crate::State>,
 	body: Ruma<upload_signing_keys::v3::Request>,
 ) -> Result<upload_signing_keys::v3::Response> {
-	let (sender_user, sender_device) = body.sender();
+	let sender_user = body.sender_user();
-
-	// UIAA
-	let mut uiaainfo = UiaaInfo {
-		flows: vec![AuthFlow { stages: vec![AuthType::Password] }],
-		completed: Vec::new(),
-		params: Box::default(),
-		session: None,
-		auth_error: None,
-	};
 
 	match check_for_new_keys(
 		services,
@@ -207,32 +196,10 @@ pub(crate) async fn upload_signing_keys_route(
 			// Some of the keys weren't found, so we let them upload
 		},
 		| _ => {
-			match &body.auth {
+			let _ = services
-				| Some(auth) => {
+				.uiaa
-					let (worked, uiaainfo) = services
+				.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
-						.uiaa
+				.await?;
-						.try_auth(sender_user, sender_device, auth, &uiaainfo)
-						.await?;
-
-					if !worked {
-						return Err(Error::Uiaa(uiaainfo));
-					}
-					// Success!
-				},
-				| _ => match body.json_body.as_ref() {
-					| Some(json) => {
-						uiaainfo.session = Some(utils::random_string(SESSION_ID_LENGTH));
-						services
-							.uiaa
-							.create(sender_user, sender_device, &uiaainfo, json);
-
-						return Err(Error::Uiaa(uiaainfo));
-					},
-					| _ => {
-						return Err(Error::BadRequest(ErrorKind::NotJson, "Not json."));
-					},
-				},
-			}
 		},
 	}
 

src/api/client/mod.rs

@@ -92,6 +92,3 @@ const DEVICE_ID_LENGTH: usize = 10;
 
 /// generated user access token length
 const TOKEN_LENGTH: usize = 32;
-
-/// generated user session ID length
-const SESSION_ID_LENGTH: usize = service::uiaa::SESSION_ID_LENGTH;

src/api/client/session.rs

@@ -8,8 +8,9 @@ use conduwuit::{
 	warn,
 };
 use conduwuit_core::{debug_error, debug_warn};
-use conduwuit_service::{Services, uiaa::SESSION_ID_LENGTH};
+use conduwuit_service::Services;
 use futures::StreamExt;
+use lettre::Address;
 use ruma::{
 	OwnedUserId, UserId,
 	api::client::{
@@ -26,9 +27,10 @@ use ruma::{
 			},
 			logout, logout_all,
 		},
-		uiaa,
+		uiaa::UserIdentifier,
 	},
 };
+use service::uiaa::Identity;
 
 use super::{DEVICE_ID_LENGTH, TOKEN_LENGTH};
 use crate::Ruma;
@@ -80,7 +82,7 @@ pub(crate) async fn password_login(
 			.password_hash(lowercased_user_id)
 			.await
 			.map(|hash| (hash, lowercased_user_id))
-			.map_err(|_| err!(Request(Forbidden("Wrong username or password."))))?,
+			.map_err(|_| err!(Request(Forbidden("Invalid identifier or password."))))?,
 	};
 
 	if hash.is_empty() {
@@ -89,7 +91,7 @@ pub(crate) async fn password_login(
 
 	hash::verify_password(password, &hash)
 		.inspect_err(|e| debug_error!("{e}"))
-		.map_err(|_| err!(Request(Forbidden("Wrong username or password."))))?;
+		.map_err(|_| err!(Request(Forbidden("Invalid identifier or password."))))?;
 
 	Ok(user_id.to_owned())
 }
@@ -161,28 +163,38 @@ pub(super) async fn ldap_login(
 
 pub(crate) async fn handle_login(
 	services: &Services,
-	body: &Ruma<login::v3::Request>,
+	identifier: Option<&UserIdentifier>,
-	identifier: Option<&uiaa::UserIdentifier>,
 	password: &str,
 	user: Option<&String>,
 ) -> Result<OwnedUserId> {
 	debug!("Got password login type");
+	let user_id_or_localpart = match (identifier, user) {
+		| (Some(UserIdentifier::UserIdOrLocalpart(localpart)), _) => localpart,
+		| (Some(UserIdentifier::Email { address }), _) => {
+			let email = Address::try_from(address.to_owned())
+				.map_err(|_| err!(Request(InvalidParam("Email is malformed"))))?;
+
+			&services
+				.threepid
+				.get_localpart_for_email(&email)
+				.await
+				.ok_or_else(|| err!(Request(Forbidden("Invalid identifier or password"))))?
+		},
+		| (None, Some(user)) => user,
+		| _ => {
+			return Err!(Request(InvalidParam("Identifier type not recognized")));
+		},
+	};
+
 	let user_id =
-				if let Some(uiaa::UserIdentifier::UserIdOrLocalpart(user_id)) = identifier {
+		UserId::parse_with_server_name(user_id_or_localpart, &services.config.server_name)
-					UserId::parse_with_server_name(user_id, &services.config.server_name)
+			.map_err(|_| err!(Request(InvalidUsername("User ID is malformed"))))?;
-				} else if let Some(user) = user {
-					UserId::parse_with_server_name(user, &services.config.server_name)
-				} else {
-					return Err!(Request(Unknown(
-						debug_warn!(?body.login_info, "Valid identifier or username was not provided (invalid or unsupported login type?)")
-					)));
-				}
-				.map_err(|e| err!(Request(InvalidUsername(warn!("Username is invalid: {e}")))))?;
 
 	let lowercased_user_id = UserId::parse_with_server_name(
 		user_id.localpart().to_lowercase(),
 		&services.config.server_name,
-	)?;
+	)
+	.unwrap();
 
 	if !services.globals.user_is_local(&user_id)
 		|| !services.globals.user_is_local(&lowercased_user_id)
@@ -244,7 +256,7 @@ pub(crate) async fn login_route(
 			password,
 			user,
 			..
-		}) => handle_login(&services, &body, identifier.as_ref(), password, user.as_ref()).await?,
+		}) => handle_login(&services, identifier.as_ref(), password, user.as_ref()).await?,
 		| login::v3::LoginInfo::Token(login::v3::Token { token }) => {
 			debug!("Got token login type");
 			if !services.server.config.login_via_existing_session {
@@ -264,7 +276,7 @@ pub(crate) async fn login_route(
 			};
 
 			let user_id =
-				if let Some(uiaa::UserIdentifier::UserIdOrLocalpart(user_id)) = identifier {
+				if let Some(UserIdentifier::UserIdOrLocalpart(user_id)) = identifier {
 					UserId::parse_with_server_name(user_id, &services.config.server_name)
 				} else if let Some(user) = user {
 					UserId::parse_with_server_name(user, &services.config.server_name)
@@ -273,7 +285,7 @@ pub(crate) async fn login_route(
 						debug_warn!(?body.login_info, "Valid identifier or username was not provided (invalid or unsupported login type?)")
 					)));
 				}
-				.map_err(|e| err!(Request(InvalidUsername(warn!("Username is invalid: {e}")))))?;
+				.map_err(|_| err!(Request(InvalidUsername(warn!("User ID is malformed")))))?;
 
 			if !services.globals.user_is_local(&user_id) {
 				return Err!(Request(Unknown("User ID does not belong to this homeserver")));
@@ -370,45 +382,13 @@ pub(crate) async fn login_token_route(
 		return Err!(Request(Forbidden("Login via an existing session is not enabled")));
 	}
 
-	// This route SHOULD have UIA
+	let sender_user = body.sender_user();
-	// TODO: How do we make only UIA sessions that have not been used before valid?
-	let (sender_user, sender_device) = body.sender();
 
-	let mut uiaainfo = uiaa::UiaaInfo {
+	// Prompt the user to confirm with their password using UIAA
-		flows: vec![uiaa::AuthFlow { stages: vec![uiaa::AuthType::Password] }],
+	let _ = services
-		completed: Vec::new(),
+		.uiaa
-		params: Box::default(),
+		.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
-		session: None,
+		.await?;
-		auth_error: None,
-	};
-
-	match &body.auth {
-		| Some(auth) => {
-			let (worked, uiaainfo) = services
-				.uiaa
-				.try_auth(sender_user, sender_device, auth, &uiaainfo)
-				.await?;
-
-			if !worked {
-				return Err(Error::Uiaa(uiaainfo));
-			}
-
-			// Success!
-		},
-		| _ => match body.json_body.as_ref() {
-			| Some(json) => {
-				uiaainfo.session = Some(utils::random_string(SESSION_ID_LENGTH));
-				services
-					.uiaa
-					.create(sender_user, sender_device, &uiaainfo, json);
-
-				return Err(Error::Uiaa(uiaainfo));
-			},
-			| _ => {
-				return Err!(Request(NotJson("No JSON body was sent when required.")));
-			},
-		},
-	}
 
 	let login_token = utils::random_string(TOKEN_LENGTH);
 	let expires_in = services.users.create_login_token(sender_user, &login_token);

src/api/client/sync/v3/joined.rs

@@ -270,7 +270,7 @@ async fn build_state_and_timeline(
 	// joined since the last sync, that being the syncing user's join event. if
 	// it's empty something is wrong.
 	if joined_since_last_sync && timeline.pdus.is_empty() {
-		warn!("timeline for newly joined room is empty");
+		debug_warn!("timeline for newly joined room is empty");
 	}
 
 	let (summary, device_list_updates) = try_join(

src/api/router.rs

@@ -28,7 +28,8 @@ pub fn build(router: Router<State>, server: &Server) -> Router<State> {
         .ruma_route(&client::appservice_ping)
 		.ruma_route(&client::get_supported_versions_route)
 		.ruma_route(&client::get_register_available_route)
-		.ruma_route(&client::register_route)
+		.ruma_route(&client::register::register_route)
+		.ruma_route(&client::register::request_registration_token_via_email_route)
 		.ruma_route(&client::get_login_types_route)
 		.ruma_route(&client::login_route)
 		.ruma_route(&client::login_token_route)
@@ -36,10 +37,13 @@ pub fn build(router: Router<State>, server: &Server) -> Router<State> {
 		.ruma_route(&client::logout_route)
 		.ruma_route(&client::logout_all_route)
 		.ruma_route(&client::change_password_route)
+		.ruma_route(&client::request_password_change_token_via_email_route)
 		.ruma_route(&client::deactivate_route)
-		.ruma_route(&client::third_party_route)
+		.ruma_route(&client::threepid::third_party_route)
-		.ruma_route(&client::request_3pid_management_token_via_email_route)
+		.ruma_route(&client::threepid::request_3pid_management_token_via_email_route)
-		.ruma_route(&client::request_3pid_management_token_via_msisdn_route)
+		.ruma_route(&client::threepid::request_3pid_management_token_via_msisdn_route)
+		.ruma_route(&client::threepid::add_3pid_route)
+		.ruma_route(&client::threepid::delete_3pid_route)
 		.ruma_route(&client::check_registration_token_validity)
 		.ruma_route(&client::get_capabilities_route)
 		.ruma_route(&client::get_pushrules_all_route)

src/api/router/args.rs

@@ -2,14 +2,13 @@ use std::{mem, ops::Deref};
 
 use axum::{body::Body, extract::FromRequest};
 use bytes::{BufMut, Bytes, BytesMut};
-use conduwuit::{Error, Result, debug, debug_warn, err, trace, utils::string::EMPTY};
+use conduwuit::{Error, Result, debug, debug_warn, err, trace};
 use ruma::{
 	CanonicalJsonObject, CanonicalJsonValue, DeviceId, OwnedDeviceId, OwnedServerName,
 	OwnedUserId, ServerName, UserId, api::IncomingRequest,
 };
-use service::Services;
 
-use super::{auth, auth::Auth, request, request::Request};
+use super::{auth, request, request::Request};
 use crate::{State, service::appservice::RegistrationInfo};
 
 /// Extractor for Ruma request structs
@@ -108,7 +107,7 @@ where
 		}
 		let auth = auth::auth(services, &mut request, json_body.as_ref(), &T::METADATA).await?;
 		Ok(Self {
-			body: make_body::<T>(services, &mut request, json_body.as_mut(), &auth)?,
+			body: make_body::<T>(&mut request, json_body.as_mut())?,
 			origin: auth.origin,
 			sender_user: auth.sender_user,
 			sender_device: auth.sender_device,
@@ -118,16 +117,11 @@ where
 	}
 }
 
-fn make_body<T>(
+fn make_body<T>(request: &mut Request, json_body: Option<&mut CanonicalJsonValue>) -> Result<T>
-	services: &Services,
-	request: &mut Request,
-	json_body: Option<&mut CanonicalJsonValue>,
-	auth: &Auth,
-) -> Result<T>
 where
 	T: IncomingRequest,
 {
-	let body = take_body(services, request, json_body, auth);
+	let body = take_body(request, json_body);
 	let http_request = into_http_request(request, body);
 	T::try_from_http_request(http_request, &request.path)
 		.map_err(|e| err!(Request(BadJson(debug_warn!("{e}")))))
@@ -151,38 +145,11 @@ fn into_http_request(request: &Request, body: Bytes) -> hyper::Request<Bytes> {
 }
 
 #[allow(clippy::needless_pass_by_value)]
-fn take_body(
+fn take_body(request: &mut Request, json_body: Option<&mut CanonicalJsonValue>) -> Bytes {
-	services: &Services,
-	request: &mut Request,
-	json_body: Option<&mut CanonicalJsonValue>,
-	auth: &Auth,
-) -> Bytes {
 	let Some(CanonicalJsonValue::Object(json_body)) = json_body else {
 		return mem::take(&mut request.body);
 	};
 
-	let user_id = auth.sender_user.clone().unwrap_or_else(|| {
-		let server_name = services.globals.server_name();
-		UserId::parse_with_server_name(EMPTY, server_name).expect("valid user_id")
-	});
-
-	let uiaa_request = json_body
-		.get("auth")
-		.and_then(CanonicalJsonValue::as_object)
-		.and_then(|auth| auth.get("session"))
-		.and_then(CanonicalJsonValue::as_str)
-		.and_then(|session| {
-			services
-				.uiaa
-				.get_uiaa_request(&user_id, auth.sender_device.as_deref(), session)
-		});
-
-	if let Some(CanonicalJsonValue::Object(initial_request)) = uiaa_request {
-		for (key, value) in initial_request {
-			json_body.entry(key).or_insert(value);
-		}
-	}
-
 	let mut buf = BytesMut::new().writer();
 	serde_json::to_writer(&mut buf, &json_body).expect("value serialization can't fail");
 	buf.into_inner().freeze()

src/core/Cargo.toml

@@ -84,6 +84,7 @@ libc.workspace = true
 libloading.workspace = true
 libloading.optional = true
 log.workspace = true
+lettre.workspace = true
 num-traits.workspace = true
 rand.workspace = true
 rand_core = { version = "0.6.4", features = ["getrandom"] }

src/core/config/mod.rs

@@ -16,6 +16,7 @@ use either::{
 };
 use figment::providers::{Env, Format, Toml};
 pub use figment::{Figment, value::Value as FigmentValue};
+use lettre::message::Mailbox;
 use regex::RegexSet;
 use ruma::{
 	OwnedRoomId, OwnedRoomOrAliasId, OwnedServerName, OwnedUserId, RoomVersionId,
@@ -68,6 +69,10 @@ pub struct Config {
 	///
 	/// Also see the `[global.well_known]` config section at the very bottom.
 	///
+	/// If `client` is not set under `[global.well_known]`, the server name will
+	/// be used as the base domain for user-facing links (such as password
+	/// reset links) created by Continuwuity.
+	///
 	/// Examples of delegation:
 	/// - https://continuwuity.org/.well-known/matrix/server
 	/// - https://continuwuity.org/.well-known/matrix/client
@@ -752,6 +757,9 @@ pub struct Config {
 	#[serde(default)]
 	pub well_known: WellKnownConfig,
 
+	/// display: nested
+	pub smtp: Option<SmtpConfig>,
+
 	/// Enable OpenTelemetry OTLP tracing export. This replaces the deprecated
 	/// Jaeger exporter. Traces will be sent via OTLP to a collector (such as
 	/// Jaeger) that supports the OpenTelemetry Protocol.
@@ -1735,6 +1743,11 @@ pub struct Config {
 	/// default: "continuwuity/<version> (bot; +https://continuwuity.org)"
 	pub url_preview_user_agent: Option<String>,
 
+	/// Determines whether audio and video files will be downloaded for URL
+	/// previews.
+	#[serde(default)]
+	pub url_preview_allow_audio_video: bool,
+
 	/// List of forbidden room aliases and room IDs as strings of regex
 	/// patterns.
 	///
@@ -2084,6 +2097,13 @@ pub struct Config {
 	#[serde(default)]
 	pub force_disable_first_run_mode: bool,
 
+	/// Allow search engines and crawlers to index Continuwuity's built-in
+	/// webpages served under the `/_continuwuity/` prefix.
+	///
+	/// default: false
+	#[serde(default)]
+	pub allow_web_indexing: bool,
+
 	/// display: nested
 	#[serde(default)]
 	pub ldap: LdapConfig,
@@ -2424,6 +2444,52 @@ pub struct DraupnirConfig {
 	pub secret: String,
 }
 
+#[derive(Clone, Debug, Deserialize)]
+#[config_example_generator(
+	filename = "conduwuit-example.toml",
+	section = "global.smtp",
+	optional = "true"
+)]
+pub struct SmtpConfig {
+	/// A `smtp://`` URI which will be used to connect to a mail server.
+	/// Uncommenting the [global.smtp] group and setting this option enables
+	/// features which depend on the ability to send email,
+	/// such as self-service password resets.
+	///
+	/// For most modern mail servers, format the URI like this:
+	/// 	`smtps://username:password@hostname:port`
+	/// Note that you will need to URL-encode the username and password. If your
+	/// username _is_ your email address, you will need to replace the `@` with
+	/// `%40`.
+	///
+	/// For a guide on the accepted URI syntax, consult Lettre's documentation:
+	/// https://docs.rs/lettre/latest/lettre/transport/smtp/struct.AsyncSmtpTransport.html#method.from_url
+	pub connection_uri: String,
+
+	/// The outgoing address which will be used for sending emails.
+	///
+	/// For a syntax guide, see https://datatracker.ietf.org/doc/html/rfc2822#section-3.4
+	///
+	/// ...or if you don't want to read the RFC, for some reason:
+	/// - `Name <address@domain.org>` to specify a sender name
+	/// - `address@domain.org` to not use a name
+	pub sender: Mailbox,
+
+	/// Whether to require that users provide an email address when they
+	/// register.
+	///
+	/// default: false
+	#[serde(default)]
+	pub require_email_for_registration: bool,
+
+	/// Whether to require that users who register with a registration token
+	/// provide an email address.
+	///
+	/// default: false
+	#[serde(default)]
+	pub require_email_for_token_registration: bool,
+}
+
 const DEPRECATED_KEYS: &[&str] = &[
 	"cache_capacity",
 	"conduit_cache_capacity_modifier",

src/core/matrix/state_res/event_auth.rs

@@ -1224,6 +1224,7 @@ fn can_send_event(event: &impl Event, ple: Option<&impl Event>, user_level: Int)
 }
 
 /// Confirm that the event sender has the required power levels.
+#[allow(clippy::cognitive_complexity)]
 fn check_power_levels(
 	room_version: &RoomVersion,
 	power_event: &impl Event,

src/core/matrix/state_res/mod.rs

@@ -75,6 +75,7 @@ type Result<T, E = Error> = crate::Result<T, E>;
 /// event is part of the same room.
 //#[tracing::instrument(level = "debug", skip(state_sets, auth_chain_sets,
 //#[tracing::instrument(level event_fetch))]
+#[allow(clippy::cognitive_complexity)]
 pub async fn resolve<'a, Pdu, Sets, SetIter, Hasher, Fetch, FetchFut, Exists, ExistsFut>(
 	room_version: &RoomVersionId,
 	state_sets: Sets,

src/database/de.rs

@@ -415,13 +415,6 @@ impl<'a, 'de: 'a> de::Deserializer<'de> for &'a mut Deserializer<'de> {
 		tracing::instrument(level = "trace", skip_all, fields(?self.buf))
 	)]
 	fn deserialize_any<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value> {
-		debug_assert_eq!(
-			conduwuit::debug::type_name::<V>(),
-			"serde_json::value::de::<impl serde_core::de::Deserialize for \
-			 serde_json::value::Value>::deserialize::ValueVisitor",
-			"deserialize_any: type not expected"
-		);
-
 		match self.record_peek_byte() {
 			| Some(b'{') => self.deserialize_map(visitor),
 			| Some(b'[') => serde_json::Deserializer::from_slice(self.record_next())

src/database/maps.rs

@@ -53,6 +53,10 @@ pub(super) static MAPS: &[Descriptor] = &[
 		name: "disabledroomids",
 		..descriptor::RANDOM_SMALL
 	},
+	Descriptor {
+		name: "email_localpart",
+		..descriptor::RANDOM_SMALL
+	},
 	Descriptor {
 		name: "eventid_outlierpdu",
 		cache_disp: CacheDisp::SharedWith("pduid_pdu"),
@@ -100,6 +104,10 @@ pub(super) static MAPS: &[Descriptor] = &[
 		name: "lazyloadedids",
 		..descriptor::RANDOM_SMALL
 	},
+	Descriptor {
+		name: "localpart_email",
+		..descriptor::RANDOM_SMALL
+	},
 	Descriptor {
 		name: "mediaid_file",
 		..descriptor::RANDOM_SMALL
@@ -112,6 +120,10 @@ pub(super) static MAPS: &[Descriptor] = &[
 		name: "onetimekeyid_onetimekeys",
 		..descriptor::RANDOM_SMALL
 	},
+	Descriptor {
+		name: "passwordresettoken_info",
+		..descriptor::RANDOM_SMALL
+	},
 	Descriptor {
 		name: "pduid_pdu",
 		cache_disp: CacheDisp::SharedWith("eventid_outlierpdu"),

src/router/router.rs

@@ -18,5 +18,5 @@ pub(crate) fn build(services: &Arc<Services>) -> (Router, Guard) {
 }
 
 async fn not_found(_uri: Uri) -> impl IntoResponse {
-	Error::Request(ErrorKind::Unrecognized, "Not Found".into(), StatusCode::NOT_FOUND)
+	Error::Request(ErrorKind::Unrecognized, "not found :(".into(), StatusCode::NOT_FOUND)
 }

src/service/Cargo.toml

@@ -91,6 +91,7 @@ conduwuit-database.workspace = true
 const-str.workspace = true
 either.workspace = true
 futures.workspace = true
+governor.workspace = true
 hickory-resolver.workspace = true
 http.workspace = true
 image.workspace = true
@@ -102,6 +103,7 @@ ldap3.optional = true
 log.workspace = true
 loole.workspace = true
 lru-cache.workspace = true
+nonzero_ext.workspace = true
 rand.workspace = true
 regex.workspace = true
 reqwest.workspace = true
@@ -121,8 +123,9 @@ webpage.workspace = true
 webpage.optional = true
 blurhash.workspace = true
 blurhash.optional = true
-recaptcha-verify = { version = "0.1.5", default-features = false }
+recaptcha-verify = { version = "0.2.0", default-features = false }
 yansi.workspace = true
+lettre.workspace = true
 
 [target.'cfg(all(unix, target_os = "linux"))'.dependencies]
 sd-notify.workspace = true

src/service/appservice/mod.rs

@@ -272,7 +272,10 @@ impl Service {
 			.get(id)
 			.await
 			.and_then(|ref bytes| serde_saphyr::from_slice(bytes).map_err(Into::into))
-			.map_err(|e| err!(Database("Invalid appservice {id:?} registration: {e:?}")))
+			.map_err(|e| {
+				self.db.id_appserviceregistrations.remove(id);
+				err!(Database("Invalid appservice {id:?} registration: {e:?}. Removed."))
+			})
 	}
 
 	pub fn read(&self) -> impl Future<Output = RwLockReadGuard<'_, Registrations>> + Send {

src/service/config/mod.rs

@@ -6,6 +6,7 @@ use conduwuit::{
 	config::{Config, check},
 	error, implement,
 };
+use url::Url;
 
 use crate::registration_tokens::{ValidToken, ValidTokenSource};
 
@@ -23,6 +24,18 @@ impl Service {
 			.clone()
 			.map(|token| ValidToken { token, source: ValidTokenSource::Config })
 	}
+
+	/// Get the base domain to use for user-facing URLs.
+	#[must_use]
+	pub fn get_client_domain(&self) -> Url {
+		self.well_known.client.clone().unwrap_or_else(|| {
+			let host = self.server_name.host();
+			format!("https://{host}")
+				.as_str()
+				.try_into()
+				.expect("server name should be a valid host")
+		})
+	}
 }
 
 #[async_trait]

src/service/firstrun/mod.rs

@@ -122,7 +122,7 @@ impl Service {
 	/// if they were not.
 	pub async fn empower_first_user(&self, user: &UserId) -> Result<bool> {
 		#[derive(Template)]
-		#[template(path = "welcome.md.j2")]
+		#[template(path = "welcome.md")]
 		struct WelcomeMessage<'a> {
 			config: &'a Dep<config::Service>,
 			domain: &'a str,
@@ -228,19 +228,34 @@ impl Service {
 				);
 			},
 		}
+
+		if self.services.config.suspend_on_register {
+			eprintln!(
+				"{} Accounts created after yours will be suspended, as set in your \
+				 configuration.",
+				"Your account will not be suspended when you register.".green()
+			);
+		}
+
+		if let Some(smtp) = &self.services.config.smtp {
+			if smtp.require_email_for_registration || smtp.require_email_for_token_registration {
+				eprintln!(
+					"{} Accounts created after yours may be required to provide an email \
+					 address, as set in your configuration.",
+					"You will not be asked for your email address when you register.".yellow(),
+				);
+			}
+			eprintln!(
+				"If you wish to associate an email address with your account, you may do so \
+				 after registration in your client's settings (if supported)."
+			);
+		}
+
 		eprintln!(
 			"{} https://matrix.org/ecosystem/clients/",
 			"Find a list of Matrix clients here:".bold()
 		);
 
-		if self.services.config.suspend_on_register {
-			eprintln!(
-				"{} Because you enabled suspend-on-register in your configuration, accounts \
-				 created after yours will be automatically suspended.",
-				"Your account will not be suspended when you register.".green()
-			);
-		}
-
 		if self
 			.services
 			.config

src/service/globals/mod.rs

@@ -142,6 +142,10 @@ impl Service {
 		self.server.config.url_preview_check_root_domain
 	}
 
+	pub fn url_preview_allow_audio_video(&self) -> bool {
+		self.server.config.url_preview_allow_audio_video
+	}
+
 	pub fn forbidden_alias_names(&self) -> &RegexSet { &self.server.config.forbidden_alias_names }
 
 	pub fn forbidden_usernames(&self) -> &RegexSet { &self.server.config.forbidden_usernames }

src/service/mailer/messages.rs

@@ -0,0 +1,49 @@
+use askama::Template;
+use ruma::UserId;
+
+pub trait MessageTemplate: Template {
+	fn subject(&self) -> String;
+}
+
+#[derive(Template)]
+#[template(path = "mail/change_email.txt")]
+pub struct ChangeEmail<'a> {
+	pub server_name: &'a str,
+	pub user_id: Option<&'a UserId>,
+	pub verification_link: String,
+}
+
+impl MessageTemplate for ChangeEmail<'_> {
+	fn subject(&self) -> String { "Verify your email address".to_owned() }
+}
+
+#[derive(Template)]
+#[template(path = "mail/new_account.txt")]
+pub struct NewAccount<'a> {
+	pub server_name: &'a str,
+	pub verification_link: String,
+}
+
+impl MessageTemplate for NewAccount<'_> {
+	fn subject(&self) -> String { "Create your new Matrix account".to_owned() }
+}
+
+#[derive(Template)]
+#[template(path = "mail/password_reset.txt")]
+pub struct PasswordReset<'a> {
+	pub display_name: Option<&'a str>,
+	pub user_id: &'a UserId,
+	pub verification_link: String,
+}
+
+impl MessageTemplate for PasswordReset<'_> {
+	fn subject(&self) -> String { format!("Password reset request for {}", &self.user_id) }
+}
+
+#[derive(Template)]
+#[template(path = "mail/test.txt")]
+pub struct Test;
+
+impl MessageTemplate for Test {
+	fn subject(&self) -> String { "Test message".to_owned() }
+}

src/service/mailer/mod.rs

@@ -0,0 +1,109 @@
+use std::sync::Arc;
+
+use conduwuit::{Err, Result, err, info};
+use lettre::{
+	AsyncSmtpTransport, AsyncTransport, Tokio1Executor,
+	message::{Mailbox, MessageBuilder, header::ContentType},
+};
+
+use crate::{Args, mailer::messages::MessageTemplate};
+
+pub mod messages;
+
+type Transport = AsyncSmtpTransport<Tokio1Executor>;
+type TransportError = lettre::transport::smtp::Error;
+
+pub struct Service {
+	transport: Option<(Mailbox, Transport)>,
+}
+
+#[async_trait::async_trait]
+impl crate::Service for Service {
+	fn build(args: Args<'_>) -> Result<Arc<Self>> {
+		let transport = args
+			.server
+			.config
+			.smtp
+			.as_ref()
+			.map(|config| {
+				Ok((config.sender.clone(), Transport::from_url(&config.connection_uri)?.build()))
+			})
+			.transpose()
+			.map_err(|err: TransportError| err!("Failed to set up SMTP transport: {err}"))?;
+
+		Ok(Arc::new(Self { transport }))
+	}
+
+	fn name(&self) -> &str { crate::service::make_name(std::module_path!()) }
+
+	async fn worker(self: Arc<Self>) -> Result<()> {
+		if let Some((_, ref transport)) = self.transport {
+			match transport.test_connection().await {
+				| Ok(true) => {
+					info!("SMTP connection test successful");
+					Ok(())
+				},
+				| Ok(false) => {
+					Err!("SMTP connection test failed")
+				},
+				| Err(err) => {
+					Err!("SMTP connection test failed: {err}")
+				},
+			}
+		} else {
+			info!("SMTP is not configured, email functionality will be unavailable");
+			Ok(())
+		}
+	}
+}
+
+impl Service {
+	/// Returns a mailer which allows email to be sent, if SMTP is configured.
+	#[must_use]
+	pub fn mailer(&self) -> Option<Mailer<'_>> {
+		self.transport
+			.as_ref()
+			.map(|(sender, transport)| Mailer { sender, transport })
+	}
+
+	pub fn expect_mailer(&self) -> Result<Mailer<'_>> {
+		self.mailer().ok_or_else(|| {
+			err!(Request(FeatureDisabled("This homeserver is not configured to send email.")))
+		})
+	}
+}
+
+pub struct Mailer<'a> {
+	sender: &'a Mailbox,
+	transport: &'a Transport,
+}
+
+impl Mailer<'_> {
+	/// Sends an email.
+	pub async fn send<Template: MessageTemplate>(
+		&self,
+		recipient: Mailbox,
+		message: Template,
+	) -> Result<()> {
+		let subject = message.subject();
+		let body = message
+			.render()
+			.map_err(|err| err!("Failed to render message template: {err}"))?;
+
+		let message = MessageBuilder::new()
+			.from(self.sender.clone())
+			.to(recipient)
+			.subject(subject)
+			.date_now()
+			.header(ContentType::TEXT_PLAIN)
+			.body(body)
+			.expect("should have been able to construct message");
+
+		self.transport
+			.send(message)
+			.await
+			.map_err(|err: TransportError| err!("Failed to send message: {err}"))?;
+
+		Ok(())
+	}
+}

src/service/media/data.rs

@@ -207,6 +207,28 @@ impl Data {
 		value.extend_from_slice(&data.image_width.unwrap_or(0).to_be_bytes());
 		value.push(0xFF);
 		value.extend_from_slice(&data.image_height.unwrap_or(0).to_be_bytes());
+		value.push(0xFF);
+		value.extend_from_slice(
+			data.video
+				.as_ref()
+				.map(String::as_bytes)
+				.unwrap_or_default(),
+		);
+		value.push(0xFF);
+		value.extend_from_slice(&data.video_size.unwrap_or(0).to_be_bytes());
+		value.push(0xFF);
+		value.extend_from_slice(&data.video_width.unwrap_or(0).to_be_bytes());
+		value.push(0xFF);
+		value.extend_from_slice(&data.video_height.unwrap_or(0).to_be_bytes());
+		value.push(0xFF);
+		value.extend_from_slice(
+			data.audio
+				.as_ref()
+				.map(String::as_bytes)
+				.unwrap_or_default(),
+		);
+		value.push(0xFF);
+		value.extend_from_slice(&data.audio_size.unwrap_or(0).to_be_bytes());
 
 		self.url_previews.insert(url.as_bytes(), &value);
 
@@ -267,6 +289,48 @@ impl Data {
 			| Some(0) => None,
 			| x => x,
 		};
+		let video = match values
+			.next()
+			.and_then(|b| String::from_utf8(b.to_vec()).ok())
+		{
+			| Some(s) if s.is_empty() => None,
+			| x => x,
+		};
+		let video_size = match values
+			.next()
+			.map(|b| usize::from_be_bytes(b.try_into().unwrap_or_default()))
+		{
+			| Some(0) => None,
+			| x => x,
+		};
+		let video_width = match values
+			.next()
+			.map(|b| u32::from_be_bytes(b.try_into().unwrap_or_default()))
+		{
+			| Some(0) => None,
+			| x => x,
+		};
+		let video_height = match values
+			.next()
+			.map(|b| u32::from_be_bytes(b.try_into().unwrap_or_default()))
+		{
+			| Some(0) => None,
+			| x => x,
+		};
+		let audio = match values
+			.next()
+			.and_then(|b| String::from_utf8(b.to_vec()).ok())
+		{
+			| Some(s) if s.is_empty() => None,
+			| x => x,
+		};
+		let audio_size = match values
+			.next()
+			.map(|b| usize::from_be_bytes(b.try_into().unwrap_or_default()))
+		{
+			| Some(0) => None,
+			| x => x,
+		};
 
 		Ok(UrlPreviewData {
 			title,
@@ -275,6 +339,12 @@ impl Data {
 			image_size,
 			image_width,
 			image_height,
+			video,
+			video_size,
+			video_width,
+			video_height,
+			audio,
+			audio_size,
 		})
 	}
 }

src/service/media/preview.rs

@@ -10,6 +10,8 @@ use std::time::SystemTime;
 use conduwuit::{Err, Result, debug, err, utils::response::LimitReadExt};
 use conduwuit_core::implement;
 use ipaddress::IPAddress;
+#[cfg(feature = "url_preview")]
+use ruma::OwnedMxcUri;
 use serde::Serialize;
 use url::Url;
 
@@ -29,6 +31,18 @@ pub struct UrlPreviewData {
 	pub image_width: Option<u32>,
 	#[serde(skip_serializing_if = "Option::is_none", rename(serialize = "og:image:height"))]
 	pub image_height: Option<u32>,
+	#[serde(skip_serializing_if = "Option::is_none", rename(serialize = "og:video"))]
+	pub video: Option<String>,
+	#[serde(skip_serializing_if = "Option::is_none", rename(serialize = "matrix:video:size"))]
+	pub video_size: Option<usize>,
+	#[serde(skip_serializing_if = "Option::is_none", rename(serialize = "og:video:width"))]
+	pub video_width: Option<u32>,
+	#[serde(skip_serializing_if = "Option::is_none", rename(serialize = "og:video:height"))]
+	pub video_height: Option<u32>,
+	#[serde(skip_serializing_if = "Option::is_none", rename(serialize = "og:audio"))]
+	pub audio: Option<String>,
+	#[serde(skip_serializing_if = "Option::is_none", rename(serialize = "matrix:audio:size"))]
+	pub audio_size: Option<usize>,
 }
 
 #[implement(Service)]
@@ -96,7 +110,9 @@ async fn request_url_preview(&self, url: &Url) -> Result<UrlPreviewData> {
 
 	let data = match content_type {
 		| html if html.starts_with("text/html") => self.download_html(url.as_str()).await?,
-		| img if img.starts_with("image/") => self.download_image(url.as_str()).await?,
+		| img if img.starts_with("image/") => self.download_image(url.as_str(), None).await?,
+		| video if video.starts_with("video/") => self.download_video(url.as_str(), None).await?,
+		| audio if audio.starts_with("audio/") => self.download_audio(url.as_str(), None).await?,
 		| _ => return Err!(Request(Unknown("Unsupported Content-Type"))),
 	};
 
@@ -107,11 +123,17 @@ async fn request_url_preview(&self, url: &Url) -> Result<UrlPreviewData> {
 
 #[cfg(feature = "url_preview")]
 #[implement(Service)]
-pub async fn download_image(&self, url: &str) -> Result<UrlPreviewData> {
+pub async fn download_image(
+	&self,
+	url: &str,
+	preview_data: Option<UrlPreviewData>,
+) -> Result<UrlPreviewData> {
 	use conduwuit::utils::random_string;
 	use image::ImageReader;
 	use ruma::Mxc;
 
+	let mut preview_data = preview_data.unwrap_or_default();
+
 	let image = self
 		.services
 		.client
@@ -128,6 +150,7 @@ pub async fn download_image(&self, url: &str) -> Result<UrlPreviewData> {
 				.expect("u64 should fit in usize"),
 		)
 		.await?;
+
 	let mxc = Mxc {
 		server_name: self.services.globals.server_name(),
 		media_id: &random_string(super::MXC_LENGTH),
@@ -135,27 +158,125 @@ pub async fn download_image(&self, url: &str) -> Result<UrlPreviewData> {
 
 	self.create(&mxc, None, None, None, &image).await?;
 
-	let cursor = std::io::Cursor::new(&image);
+	preview_data.image = Some(mxc.to_string());
-	let (width, height) = match ImageReader::new(cursor).with_guessed_format() {
+	if preview_data.image_height.is_none() || preview_data.image_width.is_none() {
-		| Err(_) => (None, None),
+		let cursor = std::io::Cursor::new(&image);
-		| Ok(reader) => match reader.into_dimensions() {
+		let (width, height) = match ImageReader::new(cursor).with_guessed_format() {
 			| Err(_) => (None, None),
-			| Ok((width, height)) => (Some(width), Some(height)),
+			| Ok(reader) => match reader.into_dimensions() {
-		},
+				| Err(_) => (None, None),
+				| Ok((width, height)) => (Some(width), Some(height)),
+			},
+		};
+
+		preview_data.image_width = width;
+		preview_data.image_height = height;
+	}
+
+	Ok(preview_data)
+}
+
+#[cfg(feature = "url_preview")]
+#[implement(Service)]
+pub async fn download_video(
+	&self,
+	url: &str,
+	preview_data: Option<UrlPreviewData>,
+) -> Result<UrlPreviewData> {
+	let mut preview_data = preview_data.unwrap_or_default();
+
+	if self.services.globals.url_preview_allow_audio_video() {
+		let (url, size) = self.download_media(url).await?;
+		preview_data.video = Some(url.to_string());
+		preview_data.video_size = Some(size);
+	}
+
+	Ok(preview_data)
+}
+
+#[cfg(feature = "url_preview")]
+#[implement(Service)]
+pub async fn download_audio(
+	&self,
+	url: &str,
+	preview_data: Option<UrlPreviewData>,
+) -> Result<UrlPreviewData> {
+	let mut preview_data = preview_data.unwrap_or_default();
+
+	if self.services.globals.url_preview_allow_audio_video() {
+		let (url, size) = self.download_media(url).await?;
+		preview_data.audio = Some(url.to_string());
+		preview_data.audio_size = Some(size);
+	}
+
+	Ok(preview_data)
+}
+
+#[cfg(feature = "url_preview")]
+#[implement(Service)]
+pub async fn download_media(&self, url: &str) -> Result<(OwnedMxcUri, usize)> {
+	use conduwuit::utils::random_string;
+	use http::header::CONTENT_TYPE;
+	use ruma::Mxc;
+
+	let response = self.services.client.url_preview.get(url).send().await?;
+	let content_type = response.headers().get(CONTENT_TYPE).cloned();
+	let media = response
+		.limit_read(
+			self.services
+				.server
+				.config
+				.max_request_size
+				.try_into()
+				.expect("u64 should fit in usize"),
+		)
+		.await?;
+
+	let mxc = Mxc {
+		server_name: self.services.globals.server_name(),
+		media_id: &random_string(super::MXC_LENGTH),
 	};
 
-	Ok(UrlPreviewData {
+	let content_type = content_type.and_then(|v| v.to_str().map(ToOwned::to_owned).ok());
-		image: Some(mxc.to_string()),
+	self.create(&mxc, None, None, content_type.as_deref(), &media)
-		image_size: Some(image.len()),
+		.await?;
-		image_width: width,
+
-		image_height: height,
+	Ok((OwnedMxcUri::from(mxc.to_string()), media.len()))
-		..Default::default()
-	})
 }
 
 #[cfg(not(feature = "url_preview"))]
 #[implement(Service)]
-pub async fn download_image(&self, _url: &str) -> Result<UrlPreviewData> {
+pub async fn download_image(
+	&self,
+	_url: &str,
+	_preview_data: Option<UrlPreviewData>,
+) -> Result<UrlPreviewData> {
+	Err!(FeatureDisabled("url_preview"))
+}
+
+#[cfg(not(feature = "url_preview"))]
+#[implement(Service)]
+pub async fn download_video(
+	&self,
+	_url: &str,
+	_preview_data: Option<UrlPreviewData>,
+) -> Result<UrlPreviewData> {
+	Err!(FeatureDisabled("url_preview"))
+}
+
+#[cfg(not(feature = "url_preview"))]
+#[implement(Service)]
+pub async fn download_audio(
+	&self,
+	_url: &str,
+	_preview_data: Option<UrlPreviewData>,
+) -> Result<UrlPreviewData> {
+	Err!(FeatureDisabled("url_preview"))
+}
+
+#[cfg(not(feature = "url_preview"))]
+#[implement(Service)]
+pub async fn download_media(&self, _url: &str) -> Result<UrlPreviewData> {
 	Err!(FeatureDisabled("url_preview"))
 }
 
@@ -182,18 +303,29 @@ async fn download_html(&self, url: &str) -> Result<UrlPreviewData> {
 		return Err!(Request(Unknown("Failed to parse HTML")));
 	};
 
-	let mut data = match html.opengraph.images.first() {
+	let mut preview_data = UrlPreviewData::default();
-		| None => UrlPreviewData::default(),
+
-		| Some(obj) => self.download_image(&obj.url).await?,
+	if let Some(obj) = html.opengraph.images.first() {
-	};
+		preview_data = self.download_image(&obj.url, Some(preview_data)).await?;
+	}
+
+	if let Some(obj) = html.opengraph.videos.first() {
+		preview_data = self.download_video(&obj.url, Some(preview_data)).await?;
+		preview_data.video_width = obj.properties.get("width").and_then(|v| v.parse().ok());
+		preview_data.video_height = obj.properties.get("height").and_then(|v| v.parse().ok());
+	}
+
+	if let Some(obj) = html.opengraph.audios.first() {
+		preview_data = self.download_audio(&obj.url, Some(preview_data)).await?;
+	}
 
 	let props = html.opengraph.properties;
 
 	/* use OpenGraph title/description, but fall back to HTML if not available */
-	data.title = props.get("title").cloned().or(html.title);
+	preview_data.title = props.get("title").cloned().or(html.title);
-	data.description = props.get("description").cloned().or(html.description);
+	preview_data.description = props.get("description").cloned().or(html.description);
 
-	Ok(data)
+	Ok(preview_data)
 }
 
 #[cfg(not(feature = "url_preview"))]

src/service/migrations.rs

@@ -1,8 +1,9 @@
 use std::{cmp, collections::HashMap, future::ready};
 
 use conduwuit::{
-	Err, Event, Pdu, Result, debug, debug_info, debug_warn, error, info,
+	Err, Event, Pdu, Result, debug, debug_info, debug_warn, err, error, info,
 	result::NotFound,
+	trace,
 	utils::{
 		IterStream, ReadyExt,
 		stream::{TryExpect, TryIgnore},
@@ -57,6 +58,7 @@ pub(crate) async fn migrations(services: &Services) -> Result<()> {
 }
 
 async fn fresh(services: &Services) -> Result<()> {
+	info!("Creating new fresh database");
 	let db = &services.db;
 
 	services.globals.db.bump_database_version(DATABASE_VERSION);
@@ -66,11 +68,18 @@ async fn fresh(services: &Services) -> Result<()> {
 	db["global"].insert(b"retroactively_fix_bad_data_from_roomuserid_joined", []);
 	db["global"].insert(b"fix_referencedevents_missing_sep", []);
 	db["global"].insert(b"fix_readreceiptid_readreceipt_duplicates", []);
+	db["global"].insert(b"fix_corrupt_msc4133_fields", []);
+	db["global"].insert(b"populate_userroomid_leftstate_table", []);
+	db["global"].insert(b"fix_local_invite_state", []);
 
 	// Create the admin room and server user on first run
-	crate::admin::create_admin_room(services).boxed().await?;
+	info!("Creating admin room and server user");
+	crate::admin::create_admin_room(services)
+		.boxed()
+		.await
+		.inspect_err(|e| error!("Failed to create admin room during db init: {e}"))?;
 
-	warn!("Created new RocksDB database with version {DATABASE_VERSION}");
+	info!("Created new database with version {DATABASE_VERSION}");
 
 	Ok(())
 }
@@ -88,19 +97,33 @@ async fn migrate(services: &Services) -> Result<()> {
 	}
 
 	if services.globals.db.database_version().await < 12 {
-		db_lt_12(services).await?;
+		db_lt_12(services)
+			.await
+			.map_err(|e| err!("Failed to run v12 migrations: {e}"))?;
 	}
 
 	// This migration can be reused as-is anytime the server-default rules are
 	// updated.
 	if services.globals.db.database_version().await < 13 {
-		db_lt_13(services).await?;
+		db_lt_13(services)
+			.await
+			.map_err(|e| err!("Failed to run v13 migrations: {e}"))?;
 	}
 
 	if db["global"].get(b"feat_sha256_media").await.is_not_found() {
-		media::migrations::migrate_sha256_media(services).await?;
+		media::migrations::migrate_sha256_media(services)
+			.await
+			.map_err(|e| err!("Failed to run SHA256 media migration: {e}"))?;
 	} else if config.media_startup_check {
-		media::migrations::checkup_sha256_media(services).await?;
+		info!("Starting media startup integrity check.");
+		let now = std::time::Instant::now();
+		media::migrations::checkup_sha256_media(services)
+			.await
+			.map_err(|e| err!("Failed to verify media integrity: {e}"))?;
+		info!(
+			"Finished media startup integrity check in {} seconds.",
+			now.elapsed().as_secs_f32()
+		);
 	}
 
 	if db["global"]
@@ -108,7 +131,12 @@ async fn migrate(services: &Services) -> Result<()> {
 		.await
 		.is_not_found()
 	{
-		fix_bad_double_separator_in_state_cache(services).await?;
+		info!("Running migration 'fix_bad_double_separator_in_state_cache'");
+		fix_bad_double_separator_in_state_cache(services)
+			.await
+			.map_err(|e| {
+				err!("Failed to run 'fix_bad_double_separator_in_state_cache' migration: {e}")
+			})?;
 	}
 
 	if db["global"]
@@ -116,7 +144,15 @@ async fn migrate(services: &Services) -> Result<()> {
 		.await
 		.is_not_found()
 	{
-		retroactively_fix_bad_data_from_roomuserid_joined(services).await?;
+		info!("Running migration 'retroactively_fix_bad_data_from_roomuserid_joined'");
+		retroactively_fix_bad_data_from_roomuserid_joined(services)
+			.await
+			.map_err(|e| {
+				err!(
+					"Failed to run 'retroactively_fix_bad_data_from_roomuserid_joined' \
+					 migration: {e}"
+				)
+			})?;
 	}
 
 	if db["global"]
@@ -125,7 +161,12 @@ async fn migrate(services: &Services) -> Result<()> {
 		.is_not_found()
 		|| services.globals.db.database_version().await < 17
 	{
-		fix_referencedevents_missing_sep(services).await?;
+		info!("Running migration 'fix_referencedevents_missing_sep'");
+		fix_referencedevents_missing_sep(services)
+			.await
+			.map_err(|e| {
+				err!("Failed to run 'fix_referencedevents_missing_sep' migration': {e}")
+			})?;
 	}
 
 	if db["global"]
@@ -134,7 +175,12 @@ async fn migrate(services: &Services) -> Result<()> {
 		.is_not_found()
 		|| services.globals.db.database_version().await < 17
 	{
-		fix_readreceiptid_readreceipt_duplicates(services).await?;
+		info!("Running migration 'fix_readreceiptid_readreceipt_duplicates'");
+		fix_readreceiptid_readreceipt_duplicates(services)
+			.await
+			.map_err(|e| {
+				err!("Failed to run 'fix_readreceiptid_readreceipt_duplicates' migration': {e}")
+			})?;
 	}
 
 	if services.globals.db.database_version().await < 17 {
@@ -147,7 +193,10 @@ async fn migrate(services: &Services) -> Result<()> {
 		.await
 		.is_not_found()
 	{
-		fix_corrupt_msc4133_fields(services).await?;
+		info!("Running migration 'fix_corrupt_msc4133_fields'");
+		fix_corrupt_msc4133_fields(services)
+			.await
+			.map_err(|e| err!("Failed to run 'fix_corrupt_msc4133_fields' migration': {e}"))?;
 	}
 
 	if services.globals.db.database_version().await < 18 {
@@ -160,7 +209,12 @@ async fn migrate(services: &Services) -> Result<()> {
 		.await
 		.is_not_found()
 	{
-		populate_userroomid_leftstate_table(services).await?;
+		info!("Running migration 'populate_userroomid_leftstate_table'");
+		populate_userroomid_leftstate_table(services)
+			.await
+			.map_err(|e| {
+				err!("Failed to run 'populate_userroomid_leftstate_table' migration': {e}")
+			})?;
 	}
 
 	if db["global"]
@@ -168,14 +222,17 @@ async fn migrate(services: &Services) -> Result<()> {
 		.await
 		.is_not_found()
 	{
-		fix_local_invite_state(services).await?;
+		info!("Running migration 'fix_local_invite_state'");
+		fix_local_invite_state(services)
+			.await
+			.map_err(|e| err!("Failed to run 'fix_local_invite_state' migration': {e}"))?;
 	}
 
 	assert_eq!(
 		services.globals.db.database_version().await,
 		DATABASE_VERSION,
-		"Failed asserting local database version {} is equal to known latest conduwuit database \
+		"Failed asserting local database version {} is equal to known latest continuwuity \
-		 version {}",
+		 database version {}",
 		services.globals.db.database_version().await,
 		DATABASE_VERSION,
 	);
@@ -370,7 +427,7 @@ async fn db_lt_13(services: &Services) -> Result<()> {
 }
 
 async fn fix_bad_double_separator_in_state_cache(services: &Services) -> Result<()> {
-	warn!("Fixing bad double separator in state_cache roomuserid_joined");
+	info!("Fixing bad double separator in state_cache roomuserid_joined");
 
 	let db = &services.db;
 	let roomuserid_joined = &db["roomuserid_joined"];
@@ -414,7 +471,7 @@ async fn fix_bad_double_separator_in_state_cache(services: &Services) -> Result<
 }
 
 async fn retroactively_fix_bad_data_from_roomuserid_joined(services: &Services) -> Result<()> {
-	warn!("Retroactively fixing bad data from broken roomuserid_joined");
+	info!("Retroactively fixing bad data from broken roomuserid_joined");
 
 	let db = &services.db;
 	let _cork = db.cork_and_sync();
@@ -504,7 +561,7 @@ async fn retroactively_fix_bad_data_from_roomuserid_joined(services: &Services)
 }
 
 async fn fix_referencedevents_missing_sep(services: &Services) -> Result {
-	warn!("Fixing missing record separator between room_id and event_id in referencedevents");
+	info!("Fixing missing record separator between room_id and event_id in referencedevents");
 
 	let db = &services.db;
 	let cork = db.cork_and_sync();
@@ -552,7 +609,7 @@ async fn fix_readreceiptid_readreceipt_duplicates(services: &Services) -> Result
 	type ArrayId = ArrayString<MAX_BYTES>;
 	type Key<'a> = (&'a RoomId, u64, &'a UserId);
 
-	warn!("Fixing undeleted entries in readreceiptid_readreceipt...");
+	info!("Fixing undeleted entries in readreceiptid_readreceipt...");
 
 	let db = &services.db;
 	let cork = db.cork_and_sync();
@@ -606,7 +663,7 @@ async fn fix_corrupt_msc4133_fields(services: &Services) -> Result {
 	use serde_json::{Value, from_slice};
 	type KeyVal<'a> = ((OwnedUserId, String), &'a [u8]);
 
-	warn!("Fixing corrupted `us.cloke.msc4175.tz` fields...");
+	info!("Fixing corrupted `us.cloke.msc4175.tz` fields...");
 
 	let db = &services.db;
 	let cork = db.cork_and_sync();
@@ -746,7 +803,18 @@ async fn fix_local_invite_state(services: &Services) -> Result {
 	let fixed =  userroomid_invitestate.stream()
 		// if they're a local user on this homeserver
 		.try_filter(|((user_id, _), _): &KeyVal<'_>| ready(services.globals.user_is_local(user_id)))
-		.and_then(async |((user_id, room_id), stripped_state): KeyVal<'_>| Ok::<_, conduwuit::Error>((user_id.to_owned(), room_id.to_owned(), stripped_state.deserialize()?)))
+		.and_then(async |((user_id, room_id), stripped_state): KeyVal<'_>| Ok::<_,
+			conduwuit::Error>((user_id.to_owned(), room_id.to_owned(), stripped_state.deserialize
+		().unwrap_or_else(|e| {
+			trace!("Failed to deserialize: {:?}", stripped_state.json());
+			warn!(
+				%user_id,
+				%room_id,
+				"Failed to deserialize stripped state for invite, removing from db: {e}"
+			);
+			userroomid_invitestate.del((user_id, room_id));
+			vec![]
+		}))))
 		.try_fold(0_usize, async |mut fixed, (user_id, room_id, stripped_state)| {
 			// and their invite state is None
 			if stripped_state.is_empty()

src/service/mod.rs

@@ -21,8 +21,10 @@ pub mod federation;
 pub mod firstrun;
 pub mod globals;
 pub mod key_backups;
+pub mod mailer;
 pub mod media;
 pub mod moderation;
+pub mod password_reset;
 pub mod presence;
 pub mod pusher;
 pub mod registration_tokens;
@@ -31,6 +33,7 @@ pub mod rooms;
 pub mod sending;
 pub mod server_keys;
 pub mod sync;
+pub mod threepid;
 pub mod transactions;
 pub mod uiaa;
 pub mod users;

src/service/password_reset/data.rs

@@ -0,0 +1,68 @@
+use std::{
+	sync::Arc,
+	time::{Duration, SystemTime},
+};
+
+use conduwuit::utils::{ReadyExt, stream::TryExpect};
+use database::{Database, Deserialized, Json, Map};
+use ruma::{OwnedUserId, UserId};
+use serde::{Deserialize, Serialize};
+
+pub(super) struct Data {
+	passwordresettoken_info: Arc<Map>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct ResetTokenInfo {
+	pub user: OwnedUserId,
+	pub issued_at: SystemTime,
+}
+
+impl ResetTokenInfo {
+	// one hour
+	const MAX_TOKEN_AGE: Duration = Duration::from_secs(60 * 60);
+
+	pub fn is_valid(&self) -> bool {
+		let now = SystemTime::now();
+
+		now.duration_since(self.issued_at)
+			.is_ok_and(|duration| duration < Self::MAX_TOKEN_AGE)
+	}
+}
+
+impl Data {
+	pub(super) fn new(db: &Arc<Database>) -> Self {
+		Self {
+			passwordresettoken_info: db["passwordresettoken_info"].clone(),
+		}
+	}
+
+	/// Associate a reset token with its info in the database.
+	pub(super) fn save_token(&self, token: &str, info: &ResetTokenInfo) {
+		self.passwordresettoken_info.raw_put(token, Json(info));
+	}
+
+	/// Lookup the info for a reset token.
+	pub(super) async fn lookup_token_info(&self, token: &str) -> Option<ResetTokenInfo> {
+		self.passwordresettoken_info
+			.get(token)
+			.await
+			.deserialized()
+			.ok()
+	}
+
+	/// Find a user's existing reset token, if any.
+	pub(super) async fn find_token_for_user(
+		&self,
+		user: &UserId,
+	) -> Option<(String, ResetTokenInfo)> {
+		self.passwordresettoken_info
+			.stream::<'_, String, ResetTokenInfo>()
+			.expect_ok()
+			.ready_find(|(_, info)| info.user == user)
+			.await
+	}
+
+	/// Remove a reset token.
+	pub(super) fn remove_token(&self, token: &str) { self.passwordresettoken_info.remove(token); }
+}

src/service/password_reset/mod.rs

@@ -0,0 +1,120 @@
+mod data;
+
+use std::{sync::Arc, time::SystemTime};
+
+use conduwuit::{Err, Result, utils};
+use data::{Data, ResetTokenInfo};
+use ruma::OwnedUserId;
+
+use crate::{Dep, globals, users};
+
+pub const PASSWORD_RESET_PATH: &str = "/_continuwuity/account/reset_password";
+pub const RESET_TOKEN_QUERY_PARAM: &str = "token";
+const RESET_TOKEN_LENGTH: usize = 32;
+
+pub struct Service {
+	db: Data,
+	services: Services,
+}
+
+struct Services {
+	users: Dep<users::Service>,
+	globals: Dep<globals::Service>,
+}
+
+#[derive(Debug)]
+pub struct ValidResetToken {
+	pub token: String,
+	pub info: ResetTokenInfo,
+}
+
+impl crate::Service for Service {
+	fn build(args: crate::Args<'_>) -> Result<Arc<Self>> {
+		Ok(Arc::new(Self {
+			db: Data::new(args.db),
+			services: Services {
+				users: args.depend::<users::Service>("users"),
+				globals: args.depend::<globals::Service>("globals"),
+			},
+		}))
+	}
+
+	fn name(&self) -> &str { crate::service::make_name(std::module_path!()) }
+}
+
+impl Service {
+	/// Generate a random string suitable to be used as a password reset token.
+	#[must_use]
+	pub fn generate_token_string() -> String { utils::random_string(RESET_TOKEN_LENGTH) }
+
+	/// Issue a password reset token for `user`, who must be a local user with
+	/// the `password` origin.
+	pub async fn issue_token(&self, user_id: OwnedUserId) -> Result<ValidResetToken> {
+		if !self.services.globals.user_is_local(&user_id) {
+			return Err!("Cannot issue a password reset token for remote user {user_id}");
+		}
+
+		if user_id == self.services.globals.server_user {
+			return Err!("Cannot issue a password reset token for the server user");
+		}
+
+		if self
+			.services
+			.users
+			.origin(&user_id)
+			.await
+			.unwrap_or_else(|_| "password".to_owned())
+			!= "password"
+		{
+			return Err!("Cannot issue a password reset token for non-internal user {user_id}");
+		}
+
+		if self.services.users.is_deactivated(&user_id).await? {
+			return Err!("Cannot issue a password reset token for deactivated user {user_id}");
+		}
+
+		if let Some((existing_token, _)) = self.db.find_token_for_user(&user_id).await {
+			self.db.remove_token(&existing_token);
+		}
+
+		let token = Self::generate_token_string();
+		let info = ResetTokenInfo {
+			user: user_id,
+			issued_at: SystemTime::now(),
+		};
+
+		self.db.save_token(&token, &info);
+
+		Ok(ValidResetToken { token, info })
+	}
+
+	/// Check if `token` represents a valid, non-expired password reset token.
+	pub async fn check_token(&self, token: &str) -> Option<ValidResetToken> {
+		self.db.lookup_token_info(token).await.and_then(|info| {
+			if info.is_valid() {
+				Some(ValidResetToken { token: token.to_owned(), info })
+			} else {
+				self.db.remove_token(token);
+				None
+			}
+		})
+	}
+
+	/// Consume the supplied valid token, using it to change its user's password
+	/// to `new_password`.
+	pub async fn consume_token(
+		&self,
+		ValidResetToken { token, info }: ValidResetToken,
+		new_password: &str,
+	) -> Result<()> {
+		if info.is_valid() {
+			self.db.remove_token(&token);
+			self.services
+				.users
+				.set_password(&info.user, Some(new_password))
+				.await?;
+		}
+
+		Ok(())
+	}
+}

src/service/registration_tokens/mod.rs

@@ -13,8 +13,6 @@ use ruma::OwnedUserId;
 
 use crate::{Dep, config, firstrun};
 
-const RANDOM_TOKEN_LENGTH: usize = 16;
-
 pub struct Service {
 	db: Data,
 	services: Services,
@@ -103,9 +101,11 @@ impl crate::Service for Service {
 }
 
 impl Service {
+	const RANDOM_TOKEN_LENGTH: usize = 16;
+
 	/// Generate a random string suitable to be used as a registration token.
 	#[must_use]
-	pub fn generate_token_string() -> String { utils::random_string(RANDOM_TOKEN_LENGTH) }
+	pub fn generate_token_string() -> String { utils::random_string(Self::RANDOM_TOKEN_LENGTH) }
 
 	/// Issue a new registration token and save it in the database.
 	pub fn issue_token(

src/service/server_keys/acquire.rs

@@ -228,7 +228,7 @@ async fn acquire_notary_result(&self, missing: &mut Batch, server_keys: ServerSi
 	self.add_signing_keys(server_keys.clone()).await;
 
 	if let Some(key_ids) = missing.get_mut(server) {
-		key_ids.retain(|key_id| key_exists(&server_keys, key_id));
+		key_ids.retain(|key_id| !key_exists(&server_keys, key_id));
 		if key_ids.is_empty() {
 			missing.remove(server);
 		}

src/service/services.rs

@@ -1,7 +1,7 @@
 use std::{any::Any, collections::BTreeMap, sync::Arc};
 
 use conduwuit::{
-	Result, Server, SyncRwLock, debug, debug_info, info, trace, utils::stream::IterStream,
+	Result, Server, SyncRwLock, debug, debug_info, error, info, trace, utils::stream::IterStream,
 };
 use database::Database;
 use futures::{Stream, StreamExt, TryStreamExt};
@@ -9,12 +9,12 @@ use tokio::sync::Mutex;
 
 use crate::{
 	account_data, admin, announcements, antispam, appservice, client, config, emergency,
-	federation, firstrun, globals, key_backups,
+	federation, firstrun, globals, key_backups, mailer,
 	manager::Manager,
-	media, moderation, presence, pusher, registration_tokens, resolver, rooms, sending,
+	media, moderation, password_reset, presence, pusher, registration_tokens, resolver, rooms,
-	server_keys,
+	sending, server_keys,
 	service::{self, Args, Map, Service},
-	sync, transactions, uiaa, users,
+	sync, threepid, transactions, uiaa, users,
 };
 
 pub struct Services {
@@ -27,6 +27,8 @@ pub struct Services {
 	pub globals: Arc<globals::Service>,
 	pub key_backups: Arc<key_backups::Service>,
 	pub media: Arc<media::Service>,
+	pub password_reset: Arc<password_reset::Service>,
+	pub mailer: Arc<mailer::Service>,
 	pub presence: Arc<presence::Service>,
 	pub pusher: Arc<pusher::Service>,
 	pub registration_tokens: Arc<registration_tokens::Service>,
@@ -38,6 +40,7 @@ pub struct Services {
 	pub server_keys: Arc<server_keys::Service>,
 	pub sync: Arc<sync::Service>,
 	pub transactions: Arc<transactions::Service>,
+	pub threepid: Arc<threepid::Service>,
 	pub uiaa: Arc<uiaa::Service>,
 	pub users: Arc<users::Service>,
 	pub moderation: Arc<moderation::Service>,
@@ -81,6 +84,8 @@ impl Services {
 			globals: build!(globals::Service),
 			key_backups: build!(key_backups::Service),
 			media: build!(media::Service),
+			password_reset: build!(password_reset::Service),
+			mailer: build!(mailer::Service),
 			presence: build!(presence::Service),
 			pusher: build!(pusher::Service),
 			registration_tokens: build!(registration_tokens::Service),
@@ -110,6 +115,7 @@ impl Services {
 			sending: build!(sending::Service),
 			server_keys: build!(server_keys::Service),
 			sync: build!(sync::Service),
+			threepid: build!(threepid::Service),
 			transactions: build!(transactions::Service),
 			uiaa: build!(uiaa::Service),
 			users: build!(users::Service),
@@ -125,10 +131,12 @@ impl Services {
 	}
 
 	pub async fn start(self: &Arc<Self>) -> Result<Arc<Self>> {
-		debug_info!("Starting services...");
+		info!("Starting services...");
 
 		self.admin.set_services(Some(Arc::clone(self)).as_ref());
-		super::migrations::migrations(self).await?;
+		super::migrations::migrations(self)
+			.await
+			.inspect_err(|e| error!("Migrations failed: {e}"))?;
 		self.manager
 			.lock()
 			.await
@@ -147,7 +155,7 @@ impl Services {
 				.await;
 		}
 
-		debug_info!("Services startup complete.");
+		info!("Services startup complete.");
 
 		Ok(Arc::clone(self))
 	}

src/service/templates/mail/_base.txt

@@ -0,0 +1,3 @@
+{%- block content %}{% endblock %}
+
+Message sent by Continuwuity {{ env!("CARGO_PKG_VERSION") }}. 🐈

src/service/templates/mail/change_email.txt

@@ -0,0 +1,13 @@
+{% extends "_base.txt" %}
+
+{% block content -%}
+Hello!
+{% if let Some(user_id) = user_id -%}
+Somebody, probably you, tried to associate this email address with the Matrix account {{ user_id }}.
+{%- else -%}
+Somebody, probably you, tried to associate this email address with a Matrix account on {{ server_name }}.
+{%- endif %}
+If that was you, and this is your email address, click this link to proceed:
+    {{ verification_link }}
+Otherwise, you can ignore this email. The above link will expire in one hour.
+{%- endblock %}

src/service/templates/mail/new_account.txt

@@ -0,0 +1,10 @@
+{% extends "_base.txt" %}
+
+{% block content -%}
+Hello!
+
+Somebody, probably you, tried to create a Matrix account on {{ server_name }} using this email address.
+Use the link below to proceed with creating your account:
+    {{ verification_link }}
+If you are not trying to create an account, you can ignore this email. The above link will expire in one hour.
+{%- endblock %}

src/service/templates/mail/password_reset.txt

@@ -0,0 +1,14 @@
+{% extends "_base.txt" %}
+
+{% block content -%}
+{%- if let Some(display_name) = display_name -%}
+Hello {{ display_name }} ({{ user_id }}),
+{%- else -%}
+Hello {{ user_id }},
+{%- endif %}
+
+Somebody, probably you, tried to reset your Matrix account's password.
+If you requested for your password to be reset, click this link to proceed:
+    {{ verification_link }}
+Otherwise, you can ignore this email. The above link will expire in one hour.
+{%- endblock %}

src/service/templates/mail/test.txt

@@ -0,0 +1,5 @@
+{% extends "_base.txt" %}
+
+{% block content -%}
+If you're seeing this, SMTP is configured correctly. :3
+{%- endblock %}

src/service/threepid/mod.rs

@@ -0,0 +1,281 @@
+use std::{borrow::Cow, collections::HashMap, sync::Arc};
+
+use conduwuit::{Err, Error, Result, result::FlatOk};
+use database::{Deserialized, Map};
+use governor::{DefaultKeyedRateLimiter, Quota, RateLimiter};
+use lettre::{Address, message::Mailbox};
+use nonzero_ext::nonzero;
+use ruma::{
+	ClientSecret, OwnedClientSecret, OwnedSessionId, SessionId, api::client::error::ErrorKind,
+};
+
+mod session;
+
+use crate::{
+	Args, Dep, config,
+	mailer::{self, messages::MessageTemplate},
+	threepid::session::{ValidationSessions, ValidationState, ValidationToken},
+};
+
+pub struct Service {
+	db: Data,
+	services: Services,
+	sessions: tokio::sync::Mutex<ValidationSessions>,
+	send_attempts: std::sync::Mutex<HashMap<(OwnedClientSecret, Address), usize>>,
+	ratelimiter: DefaultKeyedRateLimiter<Address>,
+}
+
+struct Data {
+	localpart_email: Arc<Map>,
+	email_localpart: Arc<Map>,
+}
+
+struct Services {
+	config: Dep<config::Service>,
+	mailer: Dep<mailer::Service>,
+}
+
+impl crate::Service for Service {
+	fn build(args: Args<'_>) -> Result<Arc<Self>> {
+		Ok(Arc::new(Self {
+			db: Data {
+				email_localpart: args.db["email_localpart"].clone(),
+				localpart_email: args.db["localpart_email"].clone(),
+			},
+			services: Services {
+				config: args.depend("config"),
+				mailer: args.depend("mailer"),
+			},
+			sessions: tokio::sync::Mutex::default(),
+			send_attempts: std::sync::Mutex::default(),
+			ratelimiter: RateLimiter::keyed(Self::EMAIL_RATELIMIT),
+		}))
+	}
+
+	fn name(&self) -> &str { crate::service::make_name(std::module_path!()) }
+}
+
+impl Service {
+	// Each address gets two tickets to send an email, which refill at a rate of one
+	// per ten minutes. This allows two emails to be sent at once without waiting
+	// (in case the first one gets eaten), but requires a wait of at least ten
+	// minutes before sending another.
+	const EMAIL_RATELIMIT: Quota =
+		Quota::per_minute(nonzero!(10_u32)).allow_burst(nonzero!(2_u32));
+	const VALIDATION_URL_PATH: &str = "/_continuwuity/3pid/email/validate";
+
+	/// Send a validation message to an email address.
+	///
+	/// Returns the validation session ID on success.
+	#[allow(clippy::impl_trait_in_params)]
+	pub async fn send_validation_email<Template: MessageTemplate>(
+		&self,
+		recipient: Mailbox,
+		prepare_body: impl FnOnce(String) -> Template,
+		client_secret: &ClientSecret,
+		send_attempt: usize,
+	) -> Result<OwnedSessionId> {
+		let mailer = self.services.mailer.expect_mailer()?;
+		let mut sessions = self.sessions.lock().await;
+
+		let session = match sessions.get_session_by_client_secret(client_secret) {
+			// If a validation session already exists for this client secret, we can either
+			// reuse it with a new token or return early because it's already valid.
+			| Some(session) => {
+				match session.validation_state {
+					| ValidationState::Validated => {
+						// If the existing session is already valid, don't send an email.
+						return Ok(session.session_id.clone());
+					},
+					| ValidationState::Pending(ref mut token) => {
+						// Check ratelimiting for the target address.
+						if self.ratelimiter.check_key(&recipient.email).is_err() {
+							return Err(Error::BadRequest(
+								ErrorKind::LimitExceeded { retry_after: None },
+								"You're sending emails too fast, try again in a few minutes.",
+							));
+						}
+
+						// Check the send attempt for this session.
+						let mut send_attempts = self.send_attempts.lock().unwrap();
+
+						let last_send_attempt = send_attempts
+							.entry((session.client_secret.clone(), session.email.clone()))
+							.or_default();
+
+						if send_attempt <= *last_send_attempt {
+							// If the supplied send attempt isn't higher than the last
+							// one, don't send an email.
+							return Ok(session.session_id.clone());
+						}
+
+						// Save this send attempt.
+						*last_send_attempt = send_attempt;
+						drop(send_attempts);
+
+						// Create a new token for the existing session.
+						*token = ValidationToken::new_random();
+
+						session
+					},
+				}
+			},
+			// If no session exists, create a new one.
+			| None => sessions.create_session(recipient.email.clone(), client_secret.to_owned()),
+		};
+
+		// Clone this so it can outlive the lock we're holding on `sessions`
+		let session_id = session.session_id.clone();
+
+		let ValidationState::Pending(token) = &session.validation_state else {
+			unreachable!("session should be pending")
+		};
+
+		let mut validation_url = self
+			.services
+			.config
+			.get_client_domain()
+			.join(Self::VALIDATION_URL_PATH)
+			.unwrap();
+
+		validation_url
+			.query_pairs_mut()
+			.append_pair("session", session_id.as_str())
+			.append_pair("token", &token.token);
+
+		// Once the validation URL is built, we don't need any data borrowed from
+		// `sessions` anymore and can release our lock
+		drop(sessions);
+
+		let message = prepare_body(validation_url.to_string());
+
+		mailer.send(recipient, message).await?;
+
+		Ok(session_id)
+	}
+
+	/// Attempt to mark a validation session as valid using a validation token.
+	pub async fn try_validate_session(
+		&self,
+		session_id: &SessionId,
+		supplied_token: &str,
+	) -> Result<(), Cow<'static, str>> {
+		let mut sessions = self.sessions.lock().await;
+
+		let Some(session) = sessions.get_session(session_id) else {
+			return Err("Validation session does not exist".into());
+		};
+
+		session.validation_state = match &session.validation_state {
+			| ValidationState::Validated => {
+				// If the session is already validated, do nothing.
+
+				return Ok(());
+			},
+			| ValidationState::Pending(token) => {
+				// Otherwise check the token and mark the session as valid.
+
+				if *token != *supplied_token || !token.is_valid() {
+					return Err("Validation token is invalid or expired, please request a new \
+					            one"
+					.into());
+				}
+
+				ValidationState::Validated
+			},
+		};
+
+		Ok(())
+	}
+
+	/// Consume a validated validation session, removing it from the database
+	/// and returning the newly validated email address.
+	pub async fn consume_valid_session(
+		&self,
+		session_id: &SessionId,
+		client_secret: &ClientSecret,
+	) -> Result<Address, Cow<'static, str>> {
+		let mut sessions = self.sessions.lock().await;
+
+		let Some(session) = sessions.get_session(session_id) else {
+			return Err("Validation session does not exist".into());
+		};
+
+		if session.client_secret == client_secret
+			&& matches!(session.validation_state, ValidationState::Validated)
+		{
+			let session = sessions.remove_session(session_id);
+
+			Ok(session.email)
+		} else {
+			Err("This email address has not been validated. Did you use the link that was sent \
+			     to you?"
+				.into())
+		}
+	}
+
+	/// Associate a localpart with an email address.
+	pub async fn associate_localpart_email(
+		&self,
+		localpart: &str,
+		email: &Address,
+	) -> Result<()> {
+		match self.get_localpart_for_email(email).await {
+			| Some(existing_localpart) if existing_localpart != localpart => {
+				// Another account is already using the supplied email.
+
+				Err!(Request(ThreepidInUse("This email address is already in use.")))
+			},
+			| Some(_) => {
+				// The supplied localpart is already associated with the supplied email,
+				// no changes are necessary.
+				Ok(())
+			},
+			| None => {
+				// The supplied email is not already in use.
+
+				let email: &str = email.as_ref();
+				self.db.localpart_email.insert(localpart, email);
+				self.db.email_localpart.insert(email, localpart);
+				Ok(())
+			},
+		}
+	}
+
+	/// Given a localpart, remove its corresponding email address.
+	///
+	/// [`Self::get_localpart_for_email`] may be used if only the email is
+	/// known.
+	pub async fn disassociate_localpart_email(&self, localpart: &str) -> Option<Address> {
+		let email = self.get_email_for_localpart(localpart).await?;
+
+		self.db.localpart_email.remove(localpart);
+		self.db
+			.email_localpart
+			.remove(<Address as AsRef<str>>::as_ref(&email));
+
+		Some(email)
+	}
+
+	/// Get the email associated with a localpart, if one exists.
+	pub async fn get_email_for_localpart(&self, localpart: &str) -> Option<Address> {
+		self.db
+			.localpart_email
+			.get(localpart)
+			.await
+			.deserialized::<String>()
+			.ok()
+			.map(TryInto::try_into)
+			.flat_ok()
+	}
+
+	/// Get the localpart associated with an email, if one exists.
+	pub async fn get_localpart_for_email(&self, email: &Address) -> Option<String> {
+		self.db
+			.email_localpart
+			.get(<Address as AsRef<str>>::as_ref(email))
+			.await
+			.deserialized()
+			.ok()
+	}
+}

src/service/threepid/session.rs

@@ -0,0 +1,128 @@
+use std::{
+	collections::HashMap,
+	time::{Duration, SystemTime},
+};
+
+use conduwuit::utils;
+use lettre::Address;
+use ruma::{ClientSecret, OwnedClientSecret, OwnedSessionId, SessionId};
+
+#[derive(Default)]
+pub(super) struct ValidationSessions {
+	sessions: HashMap<OwnedSessionId, ValidationSession>,
+	client_secrets: HashMap<OwnedClientSecret, OwnedSessionId>,
+}
+
+/// A pending or completed email validation session.
+#[derive(Debug)]
+pub(crate) struct ValidationSession {
+	/// The session's ID
+	pub session_id: OwnedSessionId,
+	/// The client's supplied client secret
+	pub client_secret: OwnedClientSecret,
+	/// The email address which is being validated
+	pub email: Address,
+	/// The session's validation state
+	pub validation_state: ValidationState,
+}
+
+/// The state of an email validation session.
+#[derive(Debug)]
+pub(crate) enum ValidationState {
+	/// The session is waiting for this validation token to be provided
+	Pending(ValidationToken),
+	/// The session has been validated
+	Validated,
+}
+
+#[derive(Clone, Debug)]
+pub(crate) struct ValidationToken {
+	pub token: String,
+	pub issued_at: SystemTime,
+}
+
+impl ValidationToken {
+	// one hour
+	const MAX_TOKEN_AGE: Duration = Duration::from_secs(60 * 60);
+	const RANDOM_TOKEN_LENGTH: usize = 16;
+
+	pub(super) fn new_random() -> Self {
+		Self {
+			token: utils::random_string(Self::RANDOM_TOKEN_LENGTH),
+			issued_at: SystemTime::now(),
+		}
+	}
+
+	pub(crate) fn is_valid(&self) -> bool {
+		let now = SystemTime::now();
+
+		now.duration_since(self.issued_at)
+			.is_ok_and(|duration| duration < Self::MAX_TOKEN_AGE)
+	}
+}
+
+impl PartialEq<str> for ValidationToken {
+	fn eq(&self, other: &str) -> bool { self.token == other }
+}
+
+impl ValidationSessions {
+	const RANDOM_SID_LENGTH: usize = 16;
+
+	#[must_use]
+	pub(super) fn generate_session_id() -> OwnedSessionId {
+		OwnedSessionId::parse(utils::random_string(Self::RANDOM_SID_LENGTH)).unwrap()
+	}
+
+	pub(super) fn create_session(
+		&mut self,
+		email: Address,
+		client_secret: OwnedClientSecret,
+	) -> &mut ValidationSession {
+		let session = ValidationSession {
+			session_id: Self::generate_session_id(),
+			client_secret,
+			email,
+			validation_state: ValidationState::Pending(ValidationToken::new_random()),
+		};
+
+		self.client_secrets
+			.insert(session.client_secret.clone(), session.session_id.clone());
+		self.sessions
+			.entry(session.session_id.clone())
+			.insert_entry(session)
+			.into_mut()
+	}
+
+	pub(super) fn get_session(
+		&mut self,
+		session_id: &SessionId,
+	) -> Option<&mut ValidationSession> {
+		self.sessions.get_mut(session_id)
+	}
+
+	pub(super) fn get_session_by_client_secret(
+		&mut self,
+		client_secret: &ClientSecret,
+	) -> Option<&mut ValidationSession> {
+		let session_id = self.client_secrets.get(client_secret)?;
+		let session = self
+			.sessions
+			.get_mut(session_id)
+			.expect("session should exist with session id");
+
+		Some(session)
+	}
+
+	pub(super) fn remove_session(&mut self, session_id: &SessionId) -> ValidationSession {
+		let session = self
+			.sessions
+			.remove(session_id)
+			.expect("session ID should exist");
+
+		self.client_secrets
+			.remove(&session.client_secret)
+			.expect("session should have an associated client secret");
+
+		session
+	}
+}

src/service/uiaa/mod.rs

@@ -1,24 +1,29 @@
-use std::{collections::BTreeMap, sync::Arc};
+use std::{
-
+	borrow::Cow,
-use conduwuit::{
+	collections::{HashMap, HashSet, hash_map::Entry},
-	Err, Error, Result, SyncRwLock, err, error, implement, utils,
+	sync::Arc,
-	utils::{hash, string::EMPTY},
 };
-use database::{Deserialized, Json, Map};
+
+use conduwuit::{Err, Error, Result, error, utils, utils::hash};
+use lettre::Address;
 use ruma::{
-	CanonicalJsonValue, DeviceId, OwnedDeviceId, OwnedUserId, UserId,
+	UserId,
 	api::client::{
 		error::{ErrorKind, StandardErrorBody},
-		uiaa::{AuthData, AuthType, Password, UiaaInfo, UserIdentifier},
+		uiaa::{
+			AuthData, AuthFlow, AuthType, EmailIdentity, Password, ReCaptcha, RegistrationToken,
+			ThirdpartyIdCredentials, UiaaInfo, UserIdentifier,
+		},
 	},
 };
+use serde_json::value::RawValue;
+use tokio::sync::Mutex;
 
-use crate::{Dep, config, globals, registration_tokens, users};
+use crate::{Dep, config, globals, registration_tokens, threepid, users};
 
 pub struct Service {
-	userdevicesessionid_uiaarequest: SyncRwLock<RequestMap>,
-	db: Data,
 	services: Services,
+	uiaa_sessions: Mutex<HashMap<String, UiaaSession>>,
 }
 
 struct Services {
@@ -26,214 +31,191 @@ struct Services {
 	users: Dep<users::Service>,
 	config: Dep<config::Service>,
 	registration_tokens: Dep<registration_tokens::Service>,
+	threepid: Dep<threepid::Service>,
 }
 
-struct Data {
-	userdevicesessionid_uiaainfo: Arc<Map>,
-}
-
-type RequestMap = BTreeMap<RequestKey, CanonicalJsonValue>;
-type RequestKey = (OwnedUserId, OwnedDeviceId, String);
-
-pub const SESSION_ID_LENGTH: usize = 32;
-
 impl crate::Service for Service {
 	fn build(args: crate::Args<'_>) -> Result<Arc<Self>> {
 		Ok(Arc::new(Self {
-			userdevicesessionid_uiaarequest: SyncRwLock::new(RequestMap::new()),
-			db: Data {
-				userdevicesessionid_uiaainfo: args.db["userdevicesessionid_uiaainfo"].clone(),
-			},
 			services: Services {
 				globals: args.depend::<globals::Service>("globals"),
 				users: args.depend::<users::Service>("users"),
 				config: args.depend::<config::Service>("config"),
 				registration_tokens: args
 					.depend::<registration_tokens::Service>("registration_tokens"),
+				threepid: args.depend::<threepid::Service>("threepid"),
 			},
+			uiaa_sessions: Mutex::new(HashMap::new()),
 		}))
 	}
 
 	fn name(&self) -> &str { crate::service::make_name(std::module_path!()) }
 }
 
-/// Creates a new Uiaa session. Make sure the session token is unique.
+struct UiaaSession {
-#[implement(Service)]
+	info: UiaaInfo,
-pub fn create(
+	identity: Identity,
-	&self,
-	user_id: &UserId,
-	device_id: &DeviceId,
-	uiaainfo: &UiaaInfo,
-	json_body: &CanonicalJsonValue,
-) {
-	// TODO: better session error handling (why is uiaainfo.session optional in
-	// ruma?)
-	self.set_uiaa_request(
-		user_id,
-		device_id,
-		uiaainfo.session.as_ref().expect("session should be set"),
-		json_body,
-	);
-
-	self.update_uiaa_session(
-		user_id,
-		device_id,
-		uiaainfo.session.as_ref().expect("session should be set"),
-		Some(uiaainfo),
-	);
 }
 
-#[implement(Service)]
+/// Information about the authenticated user's identity.
-#[allow(clippy::useless_let_if_seq)]
+///
-pub async fn try_auth(
+/// A field of this struct will only be Some if the user completed
-	&self,
+/// a stage which provided that information. If multiple stages provide
-	user_id: &UserId,
+/// the same field, authentication will fail if they do not all provide
-	device_id: &DeviceId,
+/// _identical_ values for that field.
-	auth: &AuthData,
+#[derive(Default, Clone)]
-	uiaainfo: &UiaaInfo,
+pub struct Identity {
-) -> Result<(bool, UiaaInfo)> {
+	/// The authenticated user's user ID, if it could be determined.
-	let mut uiaainfo = if let Some(session) = auth.session() {
+	///
-		self.get_uiaa_session(user_id, device_id, session).await?
+	/// This will be Some if:
-	} else {
+	/// - The user completed a m.login.password stage
-		uiaainfo.clone()
+	/// - The user completed a m.login.email.identity stage, and their email has
-	};
+	///   an associated user ID
+	pub localpart: Option<String>,
 
-	if uiaainfo.session.is_none() {
+	/// The authenticated user's email address, if it could be determined.
-		uiaainfo.session = Some(utils::random_string(SESSION_ID_LENGTH));
+	///
+	/// This will be Some if:
+	/// - The user completed a m.login.email.identity stage
+	/// - The user completed a m.login.password stage, and their user ID has an
+	///   associated email
+	pub email: Option<Address>,
+}
+
+macro_rules! identity_update_fn {
+	(fn $method:ident($field:ident : $type:ty)else $error:literal) => {
+		fn $method(&mut self, $field: $type) -> Result<(), StandardErrorBody> {
+			if self.$field.is_none() {
+				self.$field = Some($field);
+				Ok(())
+			} else if self.$field == Some($field) {
+				Ok(())
+			} else {
+				Err(StandardErrorBody {
+					kind: ErrorKind::InvalidParam,
+					message: $error.to_owned(),
+				})
+			}
+		}
+	};
+}
+
+impl Identity {
+	identity_update_fn!(fn try_set_localpart(localpart: String) else "User ID mismatch");
+
+	identity_update_fn!(fn try_set_email(email: Address) else "Email mismatch");
+
+	/// Create an Identity with the localpart of the provided user ID
+	/// and all other fields set to None.
+	#[must_use]
+	pub fn from_user_id(user_id: &UserId) -> Self {
+		Self {
+			localpart: Some(user_id.localpart().to_owned()),
+			..Default::default()
+		}
+	}
+}
+
+impl Service {
+	const SESSION_ID_LENGTH: usize = 32;
+
+	/// Perform the full UIAA authentication sequence for a route given its
+	/// authentication data.
+	pub async fn authenticate(
+		&self,
+		auth: &Option<AuthData>,
+		flows: Vec<AuthFlow>,
+		params: Box<RawValue>,
+		identity: Option<Identity>,
+	) -> Result<Identity> {
+		match auth.as_ref() {
+			| None => {
+				let info = self.create_session(flows, params, identity).await;
+
+				Err(Error::Uiaa(info))
+			},
+			| Some(auth) => {
+				let session: Cow<'_, str> = match auth.session() {
+					| Some(session) => session.into(),
+					| None => {
+						// Clients are allowed to send UIAA requests with an auth dict and no
+						// session if they want to start the UIAA exchange with existing
+						// authentication data. If that happens, we create a new session
+						// here.
+						self.create_session(flows, params, identity)
+							.await
+							.session
+							.unwrap()
+							.into()
+					},
+				};
+
+				match self.continue_session(auth, &session).await? {
+					| Ok(identity) => Ok(identity),
+					| Err(info) => Err(Error::Uiaa(info)),
+				}
+			},
+		}
 	}
 
-	match auth {
+	/// A helper to perform UIAA authentication with just a password stage.
-		// Find out what the user completed
+	#[inline]
-		| AuthData::Password(Password {
+	pub async fn authenticate_password(
-			identifier,
+		&self,
-			password,
+		auth: &Option<AuthData>,
-			#[cfg(feature = "element_hacks")]
+		identity: Option<Identity>,
-			user,
+	) -> Result<Identity> {
-			..
+		self.authenticate(
-		}) => {
+			auth,
-			#[cfg(feature = "element_hacks")]
+			vec![AuthFlow::new(vec![AuthType::Password])],
-			let username = if let Some(UserIdentifier::UserIdOrLocalpart(username)) = identifier {
+			Box::default(),
-				username
+			identity,
-			} else if let Some(username) = user {
+		)
-				username
+		.await
-			} else {
+	}
-				return Err(Error::BadRequest(
-					ErrorKind::Unrecognized,
-					"Identifier type not recognized.",
-				));
-			};
 
-			#[cfg(not(feature = "element_hacks"))]
+	/// Create a new UIAA session with a random session ID.
-			let Some(UserIdentifier::UserIdOrLocalpart(username)) = identifier else {
+	///
-				return Err(Error::BadRequest(
+	/// If information about the user's identity is already known, it may be
-					ErrorKind::Unrecognized,
+	/// supplied with the `identity` parameter. Authentication will fail if
-					"Identifier type not recognized.",
+	/// flows provide different values for known identity information.
-				));
+	///
-			};
+	/// Returns the info of the newly created session.
+	async fn create_session(
+		&self,
+		flows: Vec<AuthFlow>,
+		params: Box<RawValue>,
+		identity: Option<Identity>,
+	) -> UiaaInfo {
+		let mut uiaa_sessions = self.uiaa_sessions.lock().await;
 
-			let user_id_from_username = UserId::parse_with_server_name(
+		let session_id = utils::random_string(Self::SESSION_ID_LENGTH);
-				username.clone(),
+		let mut info = UiaaInfo::new(flows, params);
-				self.services.globals.server_name(),
+		info.session = Some(session_id.clone());
-			)
-			.map_err(|_| Error::BadRequest(ErrorKind::InvalidParam, "User ID is invalid."))?;
 
-			// Check if the access token being used matches the credentials used for UIAA
+		uiaa_sessions.insert(session_id, UiaaSession {
-			if user_id.localpart() != user_id_from_username.localpart() {
+			info: info.clone(),
-				return Err!(Request(Forbidden("User ID and access token mismatch.")));
+			identity: identity.unwrap_or_default(),
-			}
+		});
-			let user_id = user_id_from_username;
 
-			// Check if password is correct
+		info
-			let mut password_verified = false;
+	}
 
-			// First try local password hash verification
+	/// Proceed with UIAA authentication given a client's authorization data.
-			if let Ok(hash) = self.services.users.password_hash(&user_id).await {
+	async fn continue_session(
-				password_verified = hash::verify_password(password, &hash).is_ok();
+		&self,
-			}
+		auth: &AuthData,
+		session: &str,
+	) -> Result<Result<Identity, UiaaInfo>> {
+		// Hold this lock for the entire function to make sure that, if try_auth()
+		// is called concurrently with the same session, only one call will succeed
+		let mut uiaa_sessions = self.uiaa_sessions.lock().await;
 
-			// If local password verification failed, try LDAP authentication
+		let Entry::Occupied(mut session) = uiaa_sessions.entry(session.to_owned()) else {
-			#[cfg(feature = "ldap")]
+			return Err!(Request(InvalidParam("Invalid session")));
-			if !password_verified && self.services.config.ldap.enable {
+		};
-				// Search for user in LDAP to get their DN
-				if let Ok(dns) = self.services.users.search_ldap(&user_id).await {
-					if let Some((user_dn, _is_admin)) = dns.first() {
-						// Try to authenticate with LDAP
-						password_verified = self
-							.services
-							.users
-							.auth_ldap(user_dn, password)
-							.await
-							.is_ok();
-					}
-				}
-			}
 
-			if !password_verified {
+		if let &AuthData::FallbackAcknowledgement(_) = auth {
-				uiaainfo.auth_error = Some(StandardErrorBody {
-					kind: ErrorKind::forbidden(),
-					message: "Invalid username or password.".to_owned(),
-				});
-
-				return Ok((false, uiaainfo));
-			}
-
-			// Password was correct! Let's add it to `completed`
-			uiaainfo.completed.push(AuthType::Password);
-		},
-		| AuthData::ReCaptcha(r) => {
-			if self.services.config.recaptcha_private_site_key.is_none() {
-				return Err!(Request(Forbidden("ReCaptcha is not configured.")));
-			}
-			match recaptcha_verify::verify(
-				self.services
-					.config
-					.recaptcha_private_site_key
-					.as_ref()
-					.unwrap(),
-				r.response.as_str(),
-				None,
-			)
-			.await
-			{
-				| Ok(()) => {
-					uiaainfo.completed.push(AuthType::ReCaptcha);
-				},
-				| Err(e) => {
-					error!("ReCaptcha verification failed: {e:?}");
-					uiaainfo.auth_error = Some(StandardErrorBody {
-						kind: ErrorKind::forbidden(),
-						message: "ReCaptcha verification failed.".to_owned(),
-					});
-					return Ok((false, uiaainfo));
-				},
-			}
-		},
-		| AuthData::RegistrationToken(t) => {
-			let token = t.token.trim().to_owned();
-
-			if let Some(valid_token) = self
-				.services
-				.registration_tokens
-				.validate_token(token)
-				.await
-			{
-				self.services
-					.registration_tokens
-					.mark_token_as_used(valid_token);
-
-				uiaainfo.completed.push(AuthType::RegistrationToken);
-			} else {
-				uiaainfo.auth_error = Some(StandardErrorBody {
-					kind: ErrorKind::forbidden(),
-					message: "Invalid registration token.".to_owned(),
-				});
-				return Ok((false, uiaainfo));
-			}
-		},
-		| AuthData::Dummy(_) => {
-			uiaainfo.completed.push(AuthType::Dummy);
-		},
-		| AuthData::FallbackAcknowledgement(_) => {
 			// The client is checking if authentication has succeeded out-of-band. This is
 			// possible if the client is using "fallback auth" (see spec section
 			// 4.9.1.4), which we don't support (and probably never will, because it's a
@@ -241,109 +223,243 @@ pub async fn try_auth(
 
 			// Return early to tell the client that no, authentication did not succeed while
 			// it wasn't looking.
-			return Ok((false, uiaainfo));
+			return Ok(Err(session.get().info.clone()));
-		},
+		}
-		| k => error!("type not supported: {:?}", k),
+
-	}
+		let completed = {
-
+			let UiaaSession { info, identity } = session.get_mut();
-	// Check if a flow now succeeds
+
-	let mut completed = false;
+			let auth_type = auth.auth_type().expect("auth type should be set");
-	'flows: for flow in &mut uiaainfo.flows {
+
-		for stage in &flow.stages {
+			let flow_stages: Vec<HashSet<_>> = info
-			if !uiaainfo.completed.contains(stage) {
+				.flows
-				continue 'flows;
+				.iter()
-			}
+				.map(|flow| {
+					flow.stages
+						.iter()
+						.map(AuthType::as_str)
+						.map(ToOwned::to_owned)
+						.collect()
+				})
+				.collect();
+
+			let mut completed_stages: HashSet<_> = info
+				.completed
+				.iter()
+				.map(AuthType::as_str)
+				.map(ToOwned::to_owned)
+				.collect();
+
+			// Don't allow stages which aren't in any flows
+			if !flow_stages
+				.iter()
+				.any(|stages| stages.contains(auth_type.as_str()))
+			{
+				return Err!(Request(InvalidParam("No flows include the supplied stage")));
+			}
+
+			// If the provided stage hasn't already been completed, check it for completion
+			if !completed_stages.contains(auth_type.as_str()) {
+				match self.check_stage(auth, identity.clone()).await {
+					| Ok((completed_stage, updated_identity)) => {
+						info.auth_error = None;
+						completed_stages.insert(completed_stage.to_string());
+						info.completed.push(completed_stage);
+						*identity = updated_identity;
+					},
+					| Err(error) => {
+						info.auth_error = Some(error);
+					},
+				}
+			}
+
+			// UIAA is completed if all stages in any flow are completed
+			flow_stages
+				.iter()
+				.any(|stages| completed_stages.is_superset(stages))
+		};
+
+		if completed {
+			// This session is complete, remove it and return success
+			let (_, UiaaSession { identity, .. }) = session.remove_entry();
+
+			Ok(Ok(identity))
+		} else {
+			// The client needs to try again, return the updated session
+			Ok(Err(session.get().info.clone()))
 		}
-		// We didn't break, so this flow succeeded!
-		completed = true;
 	}
 
-	if !completed {
+	/// Check if the provided authentication data is valid.
-		self.update_uiaa_session(
+	///
-			user_id,
+	/// Returns the completed stage's type on success and error information on
-			device_id,
+	/// failure.
-			uiaainfo.session.as_ref().expect("session is always set"),
+	async fn check_stage(
-			Some(&uiaainfo),
+		&self,
-		);
+		auth: &AuthData,
+		mut identity: Identity,
+	) -> Result<(AuthType, Identity), StandardErrorBody> {
+		// Note: This function takes ownership of `identity` because mutations to the
+		// identity must not be applied unless checking the stage succeeds. The
+		// updated identity is returned as part of the Ok value, and
+		// `continue_session` handles saving it to `uiaa_sessions`.
+		//
+		// This also means it's fine to mutate `identity` at any point in this function,
+		// because those mutations won't be saved unless the function returns Ok.
 
-		return Ok((false, uiaainfo));
+		match auth {
-	}
+			| AuthData::Dummy(_) => Ok(AuthType::Dummy),
+			| AuthData::EmailIdentity(EmailIdentity {
+				thirdparty_id_creds: ThirdpartyIdCredentials { client_secret, sid, .. },
+				..
+			}) => {
+				match self
+					.services
+					.threepid
+					.consume_valid_session(sid, client_secret)
+					.await
+				{
+					| Ok(email) => {
+						if let Some(localpart) =
+							self.services.threepid.get_localpart_for_email(&email).await
+						{
+							identity.try_set_localpart(localpart)?;
+						}
 
-	// UIAA was successful! Remove this session and return true
+						identity.try_set_email(email)?;
-	self.update_uiaa_session(
-		user_id,
-		device_id,
-		uiaainfo.session.as_ref().expect("session is always set"),
-		None,
-	);
 
-	Ok((true, uiaainfo))
+						Ok(AuthType::EmailIdentity)
-}
+					},
+					| Err(message) => Err(StandardErrorBody {
+						kind: ErrorKind::ThreepidAuthFailed,
+						message: message.into_owned(),
+					}),
+				}
+			},
+			#[allow(clippy::useless_let_if_seq)]
+			| AuthData::Password(Password { identifier, password, .. }) => {
+				let user_id_or_localpart = match identifier {
+					| Some(UserIdentifier::UserIdOrLocalpart(username)) => username.to_owned(),
+					| Some(UserIdentifier::Email { address }) => {
+						let Ok(email) = Address::try_from(address.to_owned()) else {
+							return Err(StandardErrorBody {
+								kind: ErrorKind::InvalidParam,
+								message: "Email is malformed".to_owned(),
+							});
+						};
 
-#[implement(Service)]
+						if let Some(localpart) =
-fn set_uiaa_request(
+							self.services.threepid.get_localpart_for_email(&email).await
-	&self,
+						{
-	user_id: &UserId,
+							identity.try_set_email(email)?;
-	device_id: &DeviceId,
-	session: &str,
-	request: &CanonicalJsonValue,
-) {
-	let key = (user_id.to_owned(), device_id.to_owned(), session.to_owned());
-	self.userdevicesessionid_uiaarequest
-		.write()
-		.insert(key, request.to_owned());
-}
 
-#[implement(Service)]
+							localpart
-pub fn get_uiaa_request(
+						} else {
-	&self,
+							return Err(StandardErrorBody {
-	user_id: &UserId,
+								kind: ErrorKind::forbidden(),
-	device_id: Option<&DeviceId>,
+								message: "Invalid identifier or password".to_owned(),
-	session: &str,
+							});
-) -> Option<CanonicalJsonValue> {
+						}
-	let key = (
+					},
-		user_id.to_owned(),
+					| _ =>
-		device_id.unwrap_or_else(|| EMPTY.into()).to_owned(),
+						return Err(StandardErrorBody {
-		session.to_owned(),
+							kind: ErrorKind::Unrecognized,
-	);
+							message: "Identifier type not recognized".to_owned(),
+						}),
+				};
 
-	self.userdevicesessionid_uiaarequest
+				let Ok(user_id) = UserId::parse_with_server_name(
-		.read()
+					user_id_or_localpart,
-		.get(&key)
+					self.services.globals.server_name(),
-		.cloned()
+				) else {
-}
+					return Err(StandardErrorBody {
+						kind: ErrorKind::InvalidParam,
+						message: "User ID is malformed".to_owned(),
+					});
+				};
 
-#[implement(Service)]
+				// Check if password is correct
-fn update_uiaa_session(
+				let mut password_verified = false;
-	&self,
-	user_id: &UserId,
-	device_id: &DeviceId,
-	session: &str,
-	uiaainfo: Option<&UiaaInfo>,
-) {
-	let key = (user_id, device_id, session);
 
-	if let Some(uiaainfo) = uiaainfo {
+				// First try local password hash verification
-		self.db
+				if let Ok(hash) = self.services.users.password_hash(&user_id).await {
-			.userdevicesessionid_uiaainfo
+					password_verified = hash::verify_password(password, &hash).is_ok();
-			.put(key, Json(uiaainfo));
+				}
-	} else {
+
-		self.db.userdevicesessionid_uiaainfo.del(key);
+				// If local password verification failed, try LDAP authentication
+				#[cfg(feature = "ldap")]
+				if !password_verified && self.services.config.ldap.enable {
+					// Search for user in LDAP to get their DN
+					if let Ok(dns) = self.services.users.search_ldap(&user_id).await {
+						if let Some((user_dn, _is_admin)) = dns.first() {
+							// Try to authenticate with LDAP
+							password_verified = self
+								.services
+								.users
+								.auth_ldap(user_dn, password)
+								.await
+								.is_ok();
+						}
+					}
+				}
+
+				if password_verified {
+					identity.try_set_localpart(user_id.localpart().to_owned())?;
+
+					Ok(AuthType::Password)
+				} else {
+					Err(StandardErrorBody {
+						kind: ErrorKind::forbidden(),
+						message: "Invalid identifier or password".to_owned(),
+					})
+				}
+			},
+			| AuthData::ReCaptcha(ReCaptcha { response, .. }) => {
+				let Some(ref private_site_key) = self.services.config.recaptcha_private_site_key
+				else {
+					return Err(StandardErrorBody {
+						kind: ErrorKind::forbidden(),
+						message: "ReCaptcha is not configured".to_owned(),
+					});
+				};
+
+				match recaptcha_verify::verify_v3(private_site_key, response, None).await {
+					| Ok(()) => Ok(AuthType::ReCaptcha),
+					| Err(e) => {
+						error!("ReCaptcha verification failed: {e:?}");
+						Err(StandardErrorBody {
+							kind: ErrorKind::forbidden(),
+							message: "ReCaptcha verification failed".to_owned(),
+						})
+					},
+				}
+			},
+			| AuthData::RegistrationToken(RegistrationToken { token, .. }) => {
+				let token = token.trim().to_owned();
+
+				if let Some(valid_token) = self
+					.services
+					.registration_tokens
+					.validate_token(token)
+					.await
+				{
+					self.services
+						.registration_tokens
+						.mark_token_as_used(valid_token);
+
+					Ok(AuthType::RegistrationToken)
+				} else {
+					Err(StandardErrorBody {
+						kind: ErrorKind::forbidden(),
+						message: "Invalid registration token".to_owned(),
+					})
+				}
+			},
+			| _ => Err(StandardErrorBody {
+				kind: ErrorKind::Unrecognized,
+				message: "Unsupported stage type".into(),
+			}),
+		}
+		.map(|auth_type| (auth_type, identity))
 	}
 }
-
-#[implement(Service)]
-async fn get_uiaa_session(
-	&self,
-	user_id: &UserId,
-	device_id: &DeviceId,
-	session: &str,
-) -> Result<UiaaInfo> {
-	let key = (user_id, device_id, session);
-	self.db
-		.userdevicesessionid_uiaainfo
-		.qry(&key)
-		.await
-		.deserialized()
-		.map_err(|_| err!(Request(Forbidden("UIAA session does not exist."))))
-}

src/web/Cargo.toml

@@ -20,12 +20,25 @@ crate-type = [
 [dependencies]
 conduwuit-build-metadata.workspace = true
 conduwuit-service.workspace = true
+conduwuit-core.workspace = true
+async-trait.workspace = true
 askama.workspace = true
 axum.workspace = true
+axum-extra.workspace = true
+base64.workspace = true
 futures.workspace = true
 tracing.workspace = true
 rand.workspace = true
+ruma.workspace = true
 thiserror.workspace = true
+tower-http.workspace = true
+serde.workspace = true
+memory-serve = "2.1.0"
+validator = { version = "0.20.0", features = ["derive"] }
+tower-sec-fetch = { version = "0.1.2", features = ["tracing"] }
+
+[build-dependencies]
+memory-serve = "2.1.0"
 
 [lints]
 workspace = true

src/web/askama.toml

@@ -0,0 +1,2 @@
+[general]
+dirs = ["pages/templates"]

src/web/build.rs

@@ -0,0 +1 @@
+fn main() { memory_serve::load_directory("./pages/resources"); }

src/web/css/index.css

@@ -1,94 +0,0 @@
-:root {
-    color-scheme: light;
-    --font-stack: sans-serif;
-
-    --background-color: #fff;
-    --text-color: #000;
-
-    --bg: oklch(0.76 0.0854 317.27);
-    --panel-bg: oklch(0.91 0.042 317.27);
-
-    --name-lightness: 0.45;
-
-    @media (prefers-color-scheme: dark) {
-        color-scheme: dark;
-        --text-color: #fff;
-        --bg: oklch(0.15 0.042 317.27);
-        --panel-bg: oklch(0.24 0.03 317.27);
-
-        --name-lightness: 0.8;
-    }
-
-    --c1: oklch(0.44 0.177 353.06);
-    --c2: oklch(0.59 0.158 150.88);
-
-    --normal-font-size: 1rem;
-    --small-font-size: 0.8rem;
-}
-
-body {
-    color: var(--text-color);
-    font-family: var(--font-stack);
-    margin: 0;
-    padding: 0;
-    display: grid;
-    place-items: center;
-    min-height: 100vh;
-}
-
-html {
-    background-color: var(--bg);
-    background-image: linear-gradient(
-        70deg,
-        oklch(from var(--bg) l + 0.2 c h),
-        oklch(from var(--bg) l - 0.2 c h)
-    );
-    font-size: 16px;
-}
-
-.panel {
-    width: min(clamp(24rem, 12rem + 40vw, 48rem), calc(100vw - 3rem));
-    border-radius: 15px;
-    background-color: var(--panel-bg);
-    padding-inline: 1.5rem;
-    padding-block: 1rem;
-    box-shadow: 0 0.25em 0.375em hsla(0, 0%, 0%, 0.1);
-}
-
-@media (max-width: 24rem) {
-    .panel {
-        padding-inline: 0.25rem;
-        width: calc(100vw - 0.5rem);
-        border-radius: 0;
-        margin-block-start: 0.2rem;
-    }
-    main {
-        height: 100%;
-    }
-}
-
-footer {
-    padding-inline: 0.25rem;
-    height: max(fit-content, 2rem);
-}
-
-.project-name {
-    text-decoration: none;
-    background: linear-gradient(
-        130deg,
-        oklch(from var(--c1) var(--name-lightness) c h),
-        oklch(from var(--c2) var(--name-lightness) c h)
-    );
-    background-clip: text;
-    color: transparent;
-    filter: brightness(1.2);
-}
-
-b {
-    color: oklch(from var(--c2) var(--name-lightness) c h);
-}
-
-.logo {
-    width: 100%;
-    height: 64px;
-}

src/web/mod.rs

@@ -1,86 +1,114 @@
+use std::any::Any;
+
 use askama::Template;
 use axum::{
 	Router,
-	extract::State,
+	extract::rejection::{FormRejection, QueryRejection},
-	http::{StatusCode, header},
+	http::{HeaderValue, StatusCode, header},
 	response::{Html, IntoResponse, Response},
-	routing::get,
 };
-use conduwuit_build_metadata::{GIT_REMOTE_COMMIT_URL, GIT_REMOTE_WEB_URL, version_tag};
 use conduwuit_service::state;
+use tower_http::{catch_panic::CatchPanicLayer, set_header::SetResponseHeaderLayer};
+use tower_sec_fetch::SecFetchLayer;
 
-pub fn build() -> Router<state::State> {
+use crate::pages::TemplateContext;
-	Router::<state::State>::new()
-		.route("/", get(index_handler))
-		.route("/_continuwuity/logo.svg", get(logo_handler))
-}
 
-async fn index_handler(
+mod pages;
-	State(services): State<state::State>,
-) -> Result<impl IntoResponse, WebError> {
-	#[derive(Debug, Template)]
-	#[template(path = "index.html.j2")]
-	struct Index<'a> {
-		nonce: &'a str,
-		server_name: &'a str,
-		first_run: bool,
-	}
-	let nonce = rand::random::<u64>().to_string();
 
-	let template = Index {
+type State = state::State;
-		nonce: &nonce,
-		server_name: services.config.server_name.as_str(),
-		first_run: services.firstrun.is_first_run(),
-	};
-	Ok((
-		[(
-			header::CONTENT_SECURITY_POLICY,
-			format!("default-src 'nonce-{nonce}'; img-src 'self';"),
-		)],
-		Html(template.render()?),
-	))
-}
 
-async fn logo_handler() -> impl IntoResponse {
+const CATASTROPHIC_FAILURE: &str = "cat-astrophic failure! we couldn't even render the error template. \
-	(
+please contact the team @ https://continuwuity.org";
-		[(header::CONTENT_TYPE, "image/svg+xml")],
-		include_str!("templates/logo.svg").to_owned(),
-	)
-}
 
 #[derive(Debug, thiserror::Error)]
 enum WebError {
+	#[error("Failed to validate form body: {0}")]
+	ValidationError(#[from] validator::ValidationErrors),
+	#[error("{0}")]
+	QueryRejection(#[from] QueryRejection),
+	#[error("{0}")]
+	FormRejection(#[from] FormRejection),
+	#[error("{0}")]
+	BadRequest(String),
+
+	#[error("This page does not exist.")]
+	NotFound,
+
 	#[error("Failed to render template: {0}")]
 	Render(#[from] askama::Error),
+	#[error("{0}")]
+	InternalError(#[from] conduwuit_core::Error),
+	#[error("Request handler panicked! {0}")]
+	Panic(String),
 }
 
 impl IntoResponse for WebError {
 	fn into_response(self) -> Response {
 		#[derive(Debug, Template)]
 		#[template(path = "error.html.j2")]
-		struct Error<'a> {
+		struct Error {
-			nonce: &'a str,
+			error: WebError,
-			err: WebError,
+			status: StatusCode,
+			context: TemplateContext,
 		}
 
-		let nonce = rand::random::<u64>().to_string();
-
 		let status = match &self {
-			| Self::Render(_) => StatusCode::INTERNAL_SERVER_ERROR,
+			| Self::ValidationError(_)
+			| Self::BadRequest(_)
+			| Self::QueryRejection(_)
+			| Self::FormRejection(_) => StatusCode::BAD_REQUEST,
+			| Self::NotFound => StatusCode::NOT_FOUND,
+			| _ => StatusCode::INTERNAL_SERVER_ERROR,
 		};
-		let tmpl = Error { nonce: &nonce, err: self };
+
-		if let Ok(body) = tmpl.render() {
+		let template = Error {
-			(
+			error: self,
-				status,
+			status,
-				[(
+			context: TemplateContext {
-					header::CONTENT_SECURITY_POLICY,
+				// Statically set false to prevent error pages from being indexed.
-					format!("default-src 'none' 'nonce-{nonce}';"),
+				allow_indexing: false,
-				)],
+			},
-				Html(body),
+		};
-			)
+
-				.into_response()
+		if let Ok(body) = template.render() {
+			(status, Html(body)).into_response()
 		} else {
-			(status, "Something went wrong").into_response()
+			(status, CATASTROPHIC_FAILURE).into_response()
 		}
 	}
 }
+
+pub fn build() -> Router<state::State> {
+	#[allow(clippy::wildcard_imports)]
+	use pages::*;
+
+	Router::new()
+		.merge(index::build())
+		.nest(
+			"/_continuwuity/",
+			Router::new()
+				.merge(resources::build())
+				.merge(password_reset::build())
+				.merge(debug::build())
+				.merge(threepid::build())
+				.fallback(async || WebError::NotFound),
+		)
+		.layer(CatchPanicLayer::custom(|panic: Box<dyn Any + Send + 'static>| {
+			let details = if let Some(s) = panic.downcast_ref::<String>() {
+				s.clone()
+			} else if let Some(s) = panic.downcast_ref::<&str>() {
+				(*s).to_owned()
+			} else {
+				"(opaque panic payload)".to_owned()
+			};
+
+			WebError::Panic(details).into_response()
+		}))
+		.layer(SetResponseHeaderLayer::if_not_present(
+			header::CONTENT_SECURITY_POLICY,
+			HeaderValue::from_static("default-src 'self'; img-src 'self' data:;"),
+		))
+		.layer(SecFetchLayer::new(|policy| {
+			policy.allow_safe_methods().reject_missing_metadata();
+		}))
+}

src/web/pages/components/form.rs

@@ -0,0 +1,98 @@
+use askama::{Template, filters::HtmlSafe};
+use validator::ValidationErrors;
+
+/// A reusable form component with field validation.
+#[derive(Debug, Template)]
+#[template(path = "_components/form.html.j2", print = "code")]
+pub(crate) struct Form<'a> {
+	pub inputs: Vec<FormInput<'a>>,
+	pub validation_errors: Option<ValidationErrors>,
+	pub submit_label: &'a str,
+}
+
+impl HtmlSafe for Form<'_> {}
+
+/// An input element in a form component.
+#[derive(Debug, Clone, Copy)]
+pub(crate) struct FormInput<'a> {
+	/// The field name of the input.
+	pub id: &'static str,
+	/// The `type` property of the input.
+	pub input_type: &'a str,
+	/// The contents of the input's label.
+	pub label: &'a str,
+	/// Whether the input is required. Defaults to `true`.
+	pub required: bool,
+	/// The autocomplete mode for the input. Defaults to `on`.
+	pub autocomplete: &'a str,
+
+	// This is a hack to make the form! macro's support for client-only fields
+	// work properly. Client-only fields are specified in the macro without a type and aren't
+	// included in the POST body or as a field in the generated struct.
+	// To keep the field from being included in the POST body, its `name` property needs not to
+	// be set in the template. Because of limitations of macro_rules!'s repetition feature, this
+	// field needs to exist to allow the template to check if the field is client-only.
+	#[doc(hidden)]
+	pub type_name: Option<&'static str>,
+}
+
+impl Default for FormInput<'_> {
+	fn default() -> Self {
+		Self {
+			id: "",
+			input_type: "text",
+			label: "",
+			required: true,
+			autocomplete: "",
+
+			type_name: None,
+		}
+	}
+}
+
+/// Generate a deserializable struct which may be turned into a [`Form`]
+/// for inclusion in another template.
+#[macro_export]
+macro_rules! form {
+    (
+        $(#[$struct_meta:meta])*
+        struct $struct_name:ident {
+            $(
+                $(#[$field_meta:meta])*
+                $name:ident$(: $type:ty)? where { $($prop:ident: $value:expr),* }
+            ),*
+
+            submit: $submit_label:expr
+        }
+    ) => {
+        #[derive(Debug, serde::Deserialize, validator::Validate)]
+        $(#[$struct_meta])*
+        struct $struct_name {
+            $(
+                $(#[$field_meta])*
+                $(pub $name: $type,)?
+            )*
+        }
+
+        impl $struct_name {
+            /// Generate a [`Form`] which matches the shape of this struct.
+            #[allow(clippy::needless_update)]
+            fn build(validation_errors: Option<validator::ValidationErrors>) -> $crate::pages::components::form::Form<'static> {
+                $crate::pages::components::form::Form {
+                    inputs: vec![
+                        $(
+                            $crate::pages::components::form::FormInput {
+                                id: stringify!($name),
+                                $(type_name: Some(stringify!($type)),)?
+                                $($prop: $value),*,
+                                ..Default::default()
+                            },
+                        )*
+                    ],
+                    validation_errors,
+                    submit_label: $submit_label,
+                }
+            }
+        }
+    };
+}

src/web/pages/components/mod.rs

@@ -0,0 +1,71 @@
+use askama::{Template, filters::HtmlSafe};
+use base64::Engine;
+use conduwuit_core::result::FlatOk;
+use conduwuit_service::Services;
+use ruma::UserId;
+
+pub(super) mod form;
+
+#[derive(Debug)]
+pub(super) enum AvatarType<'a> {
+	Initial(char),
+	Image(&'a str),
+}
+
+#[derive(Debug, Template)]
+#[template(path = "_components/avatar.html.j2")]
+pub(super) struct Avatar<'a> {
+	pub(super) avatar_type: AvatarType<'a>,
+}
+
+impl HtmlSafe for Avatar<'_> {}
+
+#[derive(Debug, Template)]
+#[template(path = "_components/user_card.html.j2")]
+pub(super) struct UserCard<'a> {
+	pub user_id: &'a UserId,
+	pub display_name: Option<String>,
+	pub avatar_src: Option<String>,
+}
+
+impl HtmlSafe for UserCard<'_> {}
+
+impl<'a> UserCard<'a> {
+	pub(super) async fn for_local_user(services: &Services, user_id: &'a UserId) -> Self {
+		let display_name = services.users.displayname(user_id).await.ok();
+
+		let avatar_src = async {
+			let avatar_url = services.users.avatar_url(user_id).await.ok()?;
+			let avatar_mxc = avatar_url.parts().ok()?;
+			let file = services.media.get(&avatar_mxc).await.flat_ok()?;
+
+			Some(format!(
+				"data:{};base64,{}",
+				file.content_type
+					.unwrap_or_else(|| "application/octet-stream".to_owned()),
+				file.content
+					.map(|content| base64::prelude::BASE64_STANDARD.encode(content))
+					.unwrap_or_default(),
+			))
+		}
+		.await;
+
+		Self { user_id, display_name, avatar_src }
+	}
+
+	fn avatar(&'a self) -> Avatar<'a> {
+		let avatar_type = if let Some(ref avatar_src) = self.avatar_src {
+			AvatarType::Image(avatar_src)
+		} else if let Some(initial) = self
+			.display_name
+			.as_ref()
+			.and_then(|display_name| display_name.chars().next())
+		{
+			AvatarType::Initial(initial)
+		} else {
+			AvatarType::Initial(self.user_id.localpart().chars().next().unwrap())
+		};
+
+		Avatar { avatar_type }
+	}
+}

src/web/pages/debug.rs

@@ -0,0 +1,17 @@
+use std::convert::Infallible;
+
+use axum::{Router, routing::get};
+use conduwuit_core::Error;
+
+use crate::WebError;
+
+pub(crate) fn build() -> Router<crate::State> {
+	Router::new()
+		.route("/_debug/panic", get(async || -> Infallible { panic!("Guru meditation error") }))
+		.route(
+			"/_debug/error",
+			get(async || -> WebError {
+				Error::Err(std::borrow::Cow::Borrowed("Guru meditation error")).into()
+			}),
+		)
+}

src/web/pages/index.rs

@@ -0,0 +1,25 @@
+use axum::{Router, extract::State, response::IntoResponse, routing::get};
+
+use crate::{WebError, template};
+
+pub(crate) fn build() -> Router<crate::State> {
+	Router::new()
+		.route("/", get(index))
+		.route("/_continuwuity/", get(index))
+}
+
+async fn index(State(services): State<crate::State>) -> Result<impl IntoResponse, WebError> {
+	template! {
+		struct Index<'a> use "index.html.j2" {
+			server_name: &'a str,
+			first_run: bool
+		}
+	}
+
+	Ok(Index::new(
+		&services,
+		services.globals.server_name().as_str(),
+		services.firstrun.is_first_run(),
+	)
+	.into_response())
+}

src/web/pages/mod.rs

@@ -0,0 +1,56 @@
+mod components;
+pub(super) mod debug;
+pub(super) mod index;
+pub(super) mod password_reset;
+pub(super) mod resources;
+pub(super) mod threepid;
+
+#[derive(Debug)]
+pub(crate) struct TemplateContext {
+	pub allow_indexing: bool,
+}
+
+impl From<&crate::State> for TemplateContext {
+	fn from(state: &crate::State) -> Self {
+		Self {
+			allow_indexing: state.config.allow_web_indexing,
+		}
+	}
+}
+
+#[macro_export]
+macro_rules! template {
+    (
+        struct $name:ident $(<$lifetime:lifetime>)? use $path:literal {
+            $($field_name:ident: $field_type:ty),*
+        }
+    ) => {
+        #[derive(Debug, askama::Template)]
+        #[template(path = $path)]
+        struct $name$(<$lifetime>)? {
+            context: $crate::pages::TemplateContext,
+            $($field_name: $field_type,)*
+        }
+
+        impl$(<$lifetime>)? $name$(<$lifetime>)? {
+            fn new(state: &$crate::State, $($field_name: $field_type,)*) -> Self {
+                Self {
+                    context: state.into(),
+                    $($field_name,)*
+                }
+            }
+        }
+
+        #[allow(single_use_lifetimes)]
+        impl$(<$lifetime>)? axum::response::IntoResponse for $name$(<$lifetime>)? {
+            fn into_response(self) -> axum::response::Response {
+                use askama::Template;
+
+                match self.render() {
+                    Ok(rendered) => axum::response::Html(rendered).into_response(),
+                    Err(err) => $crate::WebError::from(err).into_response()
+                }
+            }
+        }
+    };
+}

src/web/pages/password_reset.rs

@@ -0,0 +1,119 @@
+use axum::{
+	Router,
+	extract::{
+		Query, State,
+		rejection::{FormRejection, QueryRejection},
+	},
+	http::StatusCode,
+	response::{IntoResponse, Response},
+	routing::get,
+};
+use serde::Deserialize;
+use validator::Validate;
+
+use crate::{
+	WebError, form,
+	pages::components::{UserCard, form::Form},
+	template,
+};
+
+const INVALID_TOKEN_ERROR: &str = "Invalid reset token. Your reset link may have expired.";
+
+template! {
+	struct PasswordReset<'a> use "password_reset.html.j2" {
+		user_card: UserCard<'a>,
+		body: PasswordResetBody
+	}
+}
+
+#[derive(Debug)]
+enum PasswordResetBody {
+	Form(Form<'static>),
+	Success,
+}
+
+form! {
+	struct PasswordResetForm {
+		#[validate(length(min = 1, message = "Password cannot be empty"))]
+		new_password: String where {
+			input_type: "password",
+			label: "New password",
+			autocomplete: "new-password"
+		},
+
+		#[validate(must_match(other = "new_password", message = "Passwords must match"))]
+		confirm_new_password: String where {
+			input_type: "password",
+			label: "Confirm new password",
+			autocomplete: "new-password"
+		}
+
+		submit: "Reset Password"
+	}
+}
+
+pub(crate) fn build() -> Router<crate::State> {
+	Router::new()
+		.route("/account/reset_password", get(get_password_reset).post(post_password_reset))
+}
+
+#[derive(Deserialize)]
+struct PasswordResetQuery {
+	token: String,
+}
+
+async fn password_reset_form(
+	services: crate::State,
+	query: PasswordResetQuery,
+	reset_form: Form<'static>,
+) -> Result<impl IntoResponse, WebError> {
+	let Some(token) = services.password_reset.check_token(&query.token).await else {
+		return Err(WebError::BadRequest(INVALID_TOKEN_ERROR.to_owned()));
+	};
+
+	let user_card = UserCard::for_local_user(&services, &token.info.user).await;
+
+	Ok(PasswordReset::new(&services, user_card, PasswordResetBody::Form(reset_form))
+		.into_response())
+}
+
+async fn get_password_reset(
+	State(services): State<crate::State>,
+	query: Result<Query<PasswordResetQuery>, QueryRejection>,
+) -> Result<impl IntoResponse, WebError> {
+	let Query(query) = query?;
+
+	password_reset_form(services, query, PasswordResetForm::build(None)).await
+}
+
+async fn post_password_reset(
+	State(services): State<crate::State>,
+	query: Result<Query<PasswordResetQuery>, QueryRejection>,
+	form: Result<axum::Form<PasswordResetForm>, FormRejection>,
+) -> Result<Response, WebError> {
+	let Query(query) = query?;
+	let axum::Form(form) = form?;
+
+	match form.validate() {
+		| Ok(()) => {
+			let Some(token) = services.password_reset.check_token(&query.token).await else {
+				return Err(WebError::BadRequest(INVALID_TOKEN_ERROR.to_owned()));
+			};
+			let user_id = token.info.user.clone();
+
+			services
+				.password_reset
+				.consume_token(token, &form.new_password)
+				.await?;
+
+			let user_card = UserCard::for_local_user(&services, &user_id).await;
+			Ok(PasswordReset::new(&services, user_card, PasswordResetBody::Success)
+				.into_response())
+		},
+		| Err(err) => Ok((
+			StatusCode::BAD_REQUEST,
+			password_reset_form(services, query, PasswordResetForm::build(Some(err))).await,
+		)
+			.into_response()),
+	}
+}