src/command/cmd_funcs.c

@@ -8686,8 +8686,9 @@ cmd_omemo_fingerprint(ProfWin* window, const char* const command, gchar** args)
     for (GList* fingerprint = fingerprints; fingerprint != NULL; fingerprint = fingerprint->next) {
         auto_char char* formatted_fingerprint = omemo_format_fingerprint(fingerprint->data);
         gboolean trusted = omemo_is_trusted_identity(jid->barejid, fingerprint->data);
+        gboolean active = omemo_is_device_active(jid->barejid, fingerprint->data);
 
-        win_println(window, THEME_DEFAULT, "-", "%s's OMEMO fingerprint: %s%s", jid->barejid, formatted_fingerprint, trusted ? " (trusted)" : "");
+        win_println(window, THEME_DEFAULT, "-", "%s's OMEMO fingerprint: %s%s%s", jid->barejid, formatted_fingerprint, trusted ? " (trusted)" : " (untrusted)", active ? " (active)" : " (inactive)");
     }
 
     g_list_free(fingerprints);

src/omemo/omemo.c

@@ -1313,6 +1313,39 @@ omemo_get_jid_untrusted_fingerprints(const char* const jid)
     return untrusted_fps;
 }
 
+gboolean
+omemo_is_device_active(const char* const jid, const char* const fingerprint)
+{
+    if (!omemo_loaded()) {
+        return FALSE;
+    }
+
+    GList* device_list = g_hash_table_lookup(omemo_ctx.device_list, jid);
+    if (!device_list) {
+        return FALSE;
+    }
+
+    GHashTable* known_identities = g_hash_table_lookup(omemo_ctx.known_devices, jid);
+    if (!known_identities) {
+        return FALSE;
+    }
+
+    void* device_id = g_hash_table_lookup(known_identities, fingerprint);
+    if (!device_id) {
+        return FALSE;
+    }
+
+    uint32_t dev_id = GPOINTER_TO_INT(device_id);
+    GList* iter;
+    for (iter = device_list; iter != NULL; iter = iter->next) {
+        if (GPOINTER_TO_INT(iter->data) == dev_id) {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
 static char*
 _omemo_fingerprint(ec_public_key* identity, gboolean formatted)
 {

src/omemo/omemo.h

@@ -87,6 +87,7 @@ GList* omemo_known_device_identities(const char* const jid);
 gboolean omemo_is_trusted_identity(const char* const jid, const char* const fingerprint);
 gboolean omemo_is_jid_trusted(const char* const jid);
 GList* omemo_get_jid_untrusted_fingerprints(const char* const jid);
+gboolean omemo_is_device_active(const char* const jid, const char* const fingerprint);
 char* omemo_fingerprint_autocomplete(const char* const search_str, gboolean previous, void* context);
 void omemo_fingerprint_autocomplete_reset(void);
 gboolean omemo_automatic_start(const char* const recipient);

tests/unittests/omemo/stub_omemo.c

@@ -42,12 +42,30 @@ omemo_is_trusted_identity(const char* const jid, const char* const fingerprint)
     return TRUE;
 }
 
+gboolean
+omemo_is_jid_trusted(const char* const jid)
+{
+    return TRUE;
+}
+
+GList*
+omemo_get_jid_untrusted_fingerprints(const char* const jid)
+{
+    return NULL;
+}
+
 GList*
 omemo_known_device_identities(const char* const jid)
 {
     return NULL;
 }
 
+gboolean
+omemo_is_device_active(const char* const jid, const char* const fingerprint)
+{
+    return TRUE;
+}
+
 gboolean
 omemo_loaded(void)
 {