e2e: Add device info action

Add a purple action (i.e. thing on the accounts->matrix-> menu)
to display the device ID and public key.

Signed-off-by: Dr. David Alan Gilbert <dave@treblig.org>

3 files changed, 42 insertions, 1 deletions

diff --git a/libmatrix.c b/libmatrix.c
index e0a1e64..5b2d4ae 100644
--- a/libmatrix.c
+++ b/libmatrix.c
@@ -35,6 +35,7 @@
 #include "version.h"
 
 #include "matrix-connection.h"
+#include "matrix-e2e.h"
 #include "matrix-room.h"
 #include "matrix-api.h"
 
@@ -378,6 +379,14 @@ static void matrixprpl_destroy(PurplePlugin *plugin) {
     purple_debug_info("matrixprpl", "shutting down\n");
 }
 
+static GList *matrixprpl_actions(PurplePlugin *plugin, gpointer context)
+{
+  GList *list = NULL;
+
+  list = matrix_e2e_actions(list);
+
+  return list;
+}
 
 static PurplePluginInfo info =
 {
@@ -402,7 +411,7 @@ static PurplePluginInfo info =
     NULL,                                                    /* ui_info */
     &prpl_info,                                              /* extra_info */
     NULL,                                                    /* prefs_info */
-    NULL,                                                    /* actions */
+    matrixprpl_actions,                                      /* actions */
     NULL,                                                    /* padding... */
     NULL,
     NULL,
diff --git a/matrix-e2e.c b/matrix-e2e.c
index 7337f2e..9c16a5f 100644
--- a/matrix-e2e.c
+++ b/matrix-e2e.c
@@ -1704,6 +1704,32 @@ out:
     return plaintext_parser;
 }
 
+static void action_device_info(PurplePluginAction *action)
+{
+    PurpleConnection *pc = (PurpleConnection *) action->context;
+
+    if (!pc) return;
+    MatrixConnectionData *conn = purple_connection_get_protocol_data(pc);
+    if (!conn || !conn->e2e) return;
+    char *title = g_strdup_printf("Device info for %s", conn->user_id);
+    char *body = g_strdup_printf("Device ID: %s"
+                                 "<br>Device Key: %s",
+                                 conn->e2e->device_id,
+                                 conn->e2e->ed25519_pubkey);
+    purple_notify_formatted(pc, title, title, NULL, body, NULL, NULL);
+    g_free(title);
+    g_free(body);
+}
+
+/* Hook for adding purple 'action' menu items */
+GList *matrix_e2e_actions(GList *list)
+{
+    list = g_list_append(list,
+                         purple_plugin_action_new(_("Device info"),
+                                                 action_device_info));
+    return list;
+}
+
 #else
 /* ==== Stubs for when e2e is configured out of the build === */
 void matrix_e2e_decrypt_d2d(PurpleConnection *pc, JsonObject *cevent)
@@ -1734,4 +1760,9 @@ void matrix_e2e_cleanup_conversation(PurpleConversation *conv)
 {
 }
 
+GList *matrix_e2e_actions(GList *list)
+{
+    return list;
+}
+
 #endif
diff --git a/matrix-e2e.h b/matrix-e2e.h
index 3aaab9b..b1282a2 100644
--- a/matrix-e2e.h
+++ b/matrix-e2e.h
@@ -25,6 +25,7 @@
 typedef struct _MatrixE2EData MatrixE2EData;
 typedef struct _PurpleConversation PurpleConversation;
 
+GList *matrix_e2e_actions(GList *list);
 int matrix_e2e_get_device_keys(MatrixConnectionData *conn, const gchar *device_id);
 void matrix_e2e_cleanup_connection(MatrixConnectionData *conn);
 void matrix_e2e_cleanup_conversation(PurpleConversation *conv);