v0.5.0

• Rewrote bridge in Go.
  • To migrate the bridge, simply upgrade in-place. The database and config will be migrated automatically, although some parts of the config aren't migrated (e.g. log config). If you prevented the bridge from writing to the config file, you'll have to temporarily allow it or update it yourself.
  • The bridge doesn't use signald anymore, all users will have to re-link the bridge. signald can be deleted after upgrading.
  • Primary device mode is no longer supported, signal-cli is recommended if you don't want to use the official Signal mobile apps.
  • Some old features are not yet supported (e.g. group management features).
• Renamed main branch from master to main.
• Added support for edits and message formatting.

v0.4.3

Target signald version: v0.23.2

• Added option to not set name/avatar for DM rooms even if the room is encrypted.
• Added options to automatically ratchet/delete megolm sessions to minimize access to old messages.
• Added command to request group/contact sync from primary device.
• Added error notices if incoming attachments are dropped.
• Fixed bugs with creating groups.
• Fixed handling changes to disappearing message timer in groups.

Changes by @maltee1

• Added bridging of group join requests on Signal to knocks on Matrix (#275).
• Added bridging of banned users from Signal to Matrix (#275).
• Added admin command to force logout other Matrix users from the bridge (#359).
• Added submit-challenge command to submit captcha codes when encountering ratelimits on sending messages (#320).
• Added invite command for inviting Signal users to a group by phone number (#285).
• Added support for bridging Matrix invites to Signal via relay user (#285).
• Added automatic group creation when inviting multiple Signal ghosts to a non-DM room (#294).
• Fixed ghost user getting kicked from Matrix room when trying to invite a user who's already in the group on Signal (#345).
• Fixed bridging power levels from Signal for users who are logged into the bridge, but don't have double puppeting enabled (#333).

v0.4.2

Target signald version: v0.23.0

• Fixed database schema upgrade for users who used SQLite before it was stabilized in v0.4.1.
• Fixed error in commands that use phone numbers (like !signal pm).
• Fixed updating private chat portal metadata when Signal user info changes.
• Updated Docker image to Alpine 3.17.

v0.4.1

Target signald version: v0.23.0

• Dropped support for phone numbers as Signal user identifiers.
• Dropped support for v1 groups.
• Promoted SQLite support to non-experimental level.
• Fixed call notices not having a plaintext body field.
• "Implicit" messages from Signal (things like read receipts) that fail to decrypt will no longer send a notice to the Matrix room.
• The docker image now has an option to bypass the startup script by setting the MAUTRIX_DIRECT_STARTUP environment variable. Additionally, it will refuse to run as a non-root user if that variable is not set (and print an error message suggesting to either set the variable or use a custom command).

v0.4.0

Target signald version: v0.21.1

N.B. This release requires a homeserver with Matrix v1.1 support, which bumps up the minimum homeserver versions to Synapse 1.54 and Dendrite 0.8.7. Minimum Conduit version remains at 0.4.0.

Added

• Added provisioning API for checking if a phone number is registered on Signal
• Added admin command for linking to an existing account in signald.
• Added Matrix -> Signal bridging for invites, kicks, bans and unbans (thanks to @maltee1 in #246 and #257).
• Added command to create Signal group for existing Matrix room (thanks to @maltee1 in #250).
• Added Matrix -> Signal power level change bridging (thanks to @maltee1 in #260 and #263).
• Added join rule bridging in both directions (thanks to @maltee1 in #268).
• Added Matrix -> Signal bridging of location messages (thanks to @maltee1 in #287).
  • Since Signal doesn't have actual location messages, they're just bridged as map links. The link template is configurable.
• Added command to link devices when the bridge is the primary device (thanks to @Craeckie in #221).
• Added command to bridge existing Matrix rooms to existing Signal groups (thanks to @MaximilianGaedig in #288).
• Added config option to auto-enable relay mode when a specific user is invited (thanks to @maltee1 in #293).
• Added options to make encryption more secure.
  • The encryption -> verification_levels config options can be used to make the bridge require encrypted messages to come from cross-signed devices, with trust-on-first-use validation of the cross-signing master key.
  • The encryption -> require option can be used to make the bridge ignore any unencrypted messages.
  • Key rotation settings can be configured with the encryption -> rotation config.

Improved

• Improved/fixed handling of disappearing message timer changes.
• Improved handling profile/contact names and prevented them from being downgraded (switching from profile name to contact name or phone number).
• Updated contact list provisioning API to not block if signald needs to update profiles.
• Trying to start a direct chat with a non-existent phone number will now reply with a proper error message instead of throwing an exception (thanks to @maltee1 in #265).
• Syncing chat members will no longer be interrupted if one of the member profiles is unavailable (thanks to [@maltee1] in [#270]).
• Group metadata changes are now bridged based on the event itself rather than resyncing the whole group, which means changes will use the correct ghost user instead of always using the bridge bot (thanks to @maltee1 in #283).
• Added proper captcha error handling when registering (thanks to @maltee1 in #280).
• Added user's phone number as topic in private chat portals (thanks to @maltee1 in #282).

Fixed

• Call start notices work again

v0.3.0

Target signald version: v0.18.0

Important changes

• Both the signald and mautrix-signal docker images have been changed to run as UID 1337 by default. The migration should work automatically as long as you update both containers at the same time.
  • Also note that the finn/signald image is deprecated, you should use signald/signald. https://signald.org/articles/install/docker/
• Old homeservers which don't support the new /v3 API endpoints are no longer supported. Synapse 1.48+, Dendrite 0.6.5+ and Conduit 0.4.0+ are supported. Legacy r0 API support can be temporarily re-enabled with pip install mautrix==0.16.0. However, this option will not be available in future releases.

Added

• Support for creating DM portals by inviting user (i.e. just making a DM the normal Matrix way).
• Leaving groups is now bridged to Signal (thanks to @maltee1 in #245).
• Signal group descriptions are now bridged into Matrix room topics.
• Signal announcement group status is now bridged into power levels on Matrix (the group will be read-only for everyone except admins).
• Added optional parameter to mark-trusted command to set trust level (instead of always using TRUSTED_VERIFIED).
• Added option to use MSC2246 async media uploads.
• Added provisioning API for listing contacts and starting private chats.

Improved

• Dropped Python 3.7 support.
• Files bridged to Matrix now include the size field in the file info.
• Removed redundant msgtype field in sticker events sent to Matrix.
• Users who have left the group on Signal will now be removed from Matrix too.

Fixed

• Logging into the bridge with double puppeting no longer removes your Signal user's Matrix ghost from DM portals with other bridge users.
• Fixed identity failure error message always saying "while sending message to None" instead of specifying the problematic phone number.
• Fixed channel -> id field in m.bridge events.

v0.2.3

Target signald version: v0.17.0

N.B. This will be the last release to support Python 3.7. Future versions will require Python 3.8 or higher. In general, the mautrix bridges will only support the lowest Python version in the latest Debian or Ubuntu LTS.

Added

• New v2 link API to provide immediate feedback after the QR code is scanned.

Improved

• Added automatic retrying for failed Matrix->Signal reactions.
• Commands using phone numbers will now try to resolve the UUID first (especially useful for pm so the portal is created with the correct ghost immediately)
• Improved signald socket handling to catch weird errors and reconnect.

Fixed

• Fixed catching errors when connecting to Signal (e.g. if the account was deleted from signald's database, but not the bridge's).
• Fixed handling message deletions from Signal.
• Fixed race condition in incoming message deduplication.

v0.2.2

Target signald version: v0.16.1

Added

• Support for disappearing messages.
  • Disabled by default in group chats, as there's no way to delete messages from the view of a single Matrix user. For single-user bridges, it's safe to enable the enable_disappearing_messages_in_groups config option.
• Notifications about incoming calls.
• Support for voice messages with MSC3245.
• Support for incoming contact share messages.
• Support for long text messages from Signal.

Improved

• Formatted all code using black and isort.
• Moved most relay mode code to mautrix-python to be shared with other bridges.
• The bridge will now queue messages temporarily if signald is down while sending.
• Removed legacy community-related features.
• Updated remaining things to use signald's v1 API.

Fixed

• Fixed empty DM rooms being unnecessarily created when receiving non-bridgeable events (e.g. profile key updates).
• Fixed duplicate rooms being created in certain cases due to the room mapping cache not working.
• Fixed replies to attachments not rendering on Signal iOS properly.

v0.2.1

Target signald version: v0.15.0

Added

• Support for Matrix->Signal redactions.
• Error messages to Matrix when sending to Signal fails.
• Custom flag to invite events that will be auto-accepted with double puppeting.
• Command to get group invite link.
• Support for custom bridge bot welcome messages (thanks to @justinbot in #146).
• Option to disable federation in portal rooms.
• Option to prevent users from registering the bridge as their primary device (thanks to @tadzik in #153).
• Extremely experimental support for SQLite. It's probably broken in some cases, so don't use it.

Improved

• Increased line length limit for signald socket (was causing the connection to fail when there was too much data going through).
• Improved Signal disconnection detection (mostly affects prometheus metrics).
• Updated provisioning API /link/wait endpoint to return HTTP 400 if signald loses connection to Signal.

Fixed

• Fixed bugs with automatic migration of Matrix ghosts from phone number to UUID format.
• Fixed handling empty Signal avatar files.

v0.2.0

Target signald version: v0.14.1

N.B. Docker images have moved from dock.mau.dev/tulir/mautrix-signal to dock.mau.dev/mautrix/signal. New versions are only available at the new path.

Added

• Relay mode (see docs)
• Added captcha parameter to help text of register command.
• Option to delete unknown accounts from signald when starting the bridge.

Improved

• Contact info is now synced when other devices send contact list updates.
• Contact avatars will now be used if profile avatar isn't available and contact names are allowed.
• Linking a new device or registering now uses the overwrite param in signald, which means it will force-login even if there is an existing signald session with the same phone number.
• Updated Docker image to Alpine 3.14.

Fixed

• Fixed Signal delivery receipts being handled as read receipts.
• Fixed logging out causing signald to get into a bad state.
• Fixed handling conflicting puppet rows when finding UUID (#82).