add support for matrix -> signal location messages

config/bridge.go

@@ -81,6 +81,7 @@ type BridgeConfig struct {
 
 	usernameTemplate    *template.Template `yaml:"-"`
 	displaynameTemplate *template.Template `yaml:"-"`
+	LocationFormat      string             `yaml:"location_format"`
 }
 
 func (bc *BridgeConfig) GetResendBridgeInfo() bool {

config/upgrade.go

@@ -144,6 +144,7 @@ func DoUpgrade(helper *up.Helper) {
 	} else {
 		helper.Copy(up.Map, "bridge", "relay", "message_formats")
 	}
+	helper.Copy(up.Str, "bridge", "location_format")
 }
 
 var SpacedBlocks = [][]string{

example-config.yaml

@@ -299,6 +299,11 @@ bridge:
             m.video: "<b>{{ .Sender.Displayname }}</b> sent a video"
             m.location: "<b>{{ .Sender.Displayname }}</b> sent a location"
 
+    # Format for generating URLs from location messages for sending to Signal
+    # Google Maps: 'https://www.google.com/maps/place/%[1]s,%[2]s'
+    # OpenStreetMap: 'https://www.openstreetmap.org/?mlat=%[1]s&mlon=%[2]'
+    location_format: 'https://www.google.com/maps/place/%[1]s,%[2]s'
+
 # Logging config. See https://github.com/tulir/zeroconfig for details.
 logging:
     min_level: debug

msgconv/from-matrix.go

@@ -20,6 +20,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"strings"
 	"time"
 
 	"github.com/rs/zerolog"
@@ -109,8 +110,9 @@ func (mc *MessageConverter) ToSignal(ctx context.Context, evt *event.Event, cont
 			Emoji: emoji,
 		}
 	case event.MsgLocation:
-		// TODO implement
-		fallthrough
+		coords := strings.Split(content.GeoURI[len("geo:"):], ",")
+		locationString := fmt.Sprintf(mc.LocationFormat, coords[0], coords[1])
+		dm.Body = &locationString
 	default:
 		return nil, fmt.Errorf("%w %s", ErrUnsupportedMsgType, content.MsgType)
 	}

msgconv/msgconv.go

@@ -54,6 +54,8 @@ type MessageConverter struct {
 	ConvertGIFToAPNG     bool
 	MaxFileSize          int64
 	AsyncFiles           bool
+
+	LocationFormat string
 }
 
 func (mc *MessageConverter) IsPrivateChat(ctx context.Context) bool {

portal.go

@@ -236,6 +236,7 @@ func (br *SignalBridge) NewPortal(dbPortal *database.Portal) *Portal {
 		MatrixFmtParams:      matrixFormatParams,
 		ConvertVoiceMessages: true,
 		MaxFileSize:          br.MediaConfig.UploadSize,
+		LocationFormat:       br.Config.Bridge.LocationFormat,
 	}
 	go portal.messageLoop()