xep-0308: Initial support for incoming LMC

src/xmpp/capabilities.c

@@ -110,6 +110,8 @@ caps_init(void)
     if (prefs_get_boolean(PREF_LASTACTIVITY)) {
         g_hash_table_add(prof_features, strdup(STANZA_NS_LASTACTIVITY));
     }
+    //TODO: depend on setting
+    g_hash_table_add(prof_features, strdup(STANZA_NS_LAST_MESSAGE_CORRECTION));
     my_sha1 = NULL;
 }
 

src/xmpp/message.c

@@ -188,6 +188,7 @@ message_init(void)
     message->jid = NULL;
     message->id = NULL;
     message->originid = NULL;
+    message->replace_id = NULL;
     message->body = NULL;
     message->encrypted = NULL;
     message->plain = NULL;
@@ -215,6 +216,10 @@ message_free(ProfMessage *message)
         xmpp_free(ctx, message->originid);
     }
 
+    if (message->replace_id) {
+        xmpp_free(ctx, message->replace_id);
+    }
+
     if (message->body) {
         xmpp_free(ctx, message->body);
     }
@@ -1113,6 +1118,20 @@ _handle_chat(xmpp_stanza_t *const stanza)
     ProfMessage *message = message_init();
     message->jid = jid;
 
+    // message stanza id
+    const char *id = xmpp_stanza_get_id(stanza);
+    if (id) {
+        message->id = strdup(id);
+    }
+
+    xmpp_stanza_t *replace_id_stanza = xmpp_stanza_get_child_by_ns(stanza, STANZA_NS_LAST_MESSAGE_CORRECTION);
+    if (replace_id_stanza) {
+        const char *replace_id = xmpp_stanza_get_id(replace_id_stanza);
+        if (replace_id) {
+            message->replace_id = strdup(replace_id);
+        }
+    }
+
     if (mucuser) {
         message->mucuser = TRUE;
     }

src/xmpp/stanza.h

@@ -201,6 +201,7 @@
 #define STANZA_NS_STABLE_ID "urn:xmpp:sid:0"
 #define STANZA_NS_USER_AVATAR_DATA "urn:xmpp:avatar:data"
 #define STANZA_NS_USER_AVATAR_METADATA "urn:xmpp:avatar:metadata"
+#define STANZA_NS_LAST_MESSAGE_CORRECTION "urn:xmpp:message-correct:0"
 
 #define STANZA_DATAFORM_SOFTWARE "urn:xmpp:dataforms:softwareinfo"
 

src/xmpp/xmpp.h

@@ -68,6 +68,7 @@
 #define XMPP_FEATURE_PUBSUB "http://jabber.org/protocol/pubsub"
 #define XMPP_FEATURE_PUBSUB_PUBLISH_OPTIONS "http://jabber.org/protocol/pubsub#publish-options"
 #define XMPP_FEATURE_USER_AVATAR_METADATA_NOTIFY "urn:xmpp:avatar:metadata+notify"
+#define XMPP_FEATURE_LAST_MESSAGE_CORRECTION "urn:xmpp:message-correct:0"
 
 typedef enum {
     JABBER_CONNECTING,
@@ -130,6 +131,8 @@ typedef struct prof_message_t {
    char *id;
    /* </origin-id> XEP-0359 */
    char *originid;
+   /* <replace id> XEP-0308 LMC */
+   char *replace_id;
    /* The raw body from xmpp message, either plaintext or OTR encrypted text */
    char *body;
    /* The encrypted message as for PGP */