fix: allow adding own JID to roster

Enable adding oneself to the roster.

Self subscriptions are implicit according to XEP-0060 / XEP-0163.
So we adapt the /sub command to handle this gracefully by just printing
an informative message.

Profanitys logic didn't handle own presence/when adding to roster
correctly. This got fixed now.

Fixes: https://github.com/profanity-im/profanity/issues/2084

Signed-off-by: Michael Vetter <jubalh@iodoru.org>

src/command/cmd_funcs.c

@@ -1156,6 +1156,10 @@ cmd_sub(ProfWin* window, const char* const command, gchar** args)
     }
 
     auto_jid Jid* jidp = jid_create(jid);
+    if (!jidp) {
+        cons_bad_cmd_usage(command);
+        return TRUE;
+    }
 
     if (strcmp(subcmd, "allow") == 0) {
         presence_subscription(jidp->barejid, PRESENCE_SUBSCRIBED);
@@ -1166,9 +1170,13 @@ cmd_sub(ProfWin* window, const char* const command, gchar** args)
         cons_show("Deleted/denied subscription for %s", jidp->barejid);
         log_info("Deleted/denied subscription for %s", jidp->barejid);
     } else if (strcmp(subcmd, "request") == 0) {
-        presence_subscription(jidp->barejid, PRESENCE_SUBSCRIBE);
-        cons_show("Sent subscription request to %s.", jidp->barejid);
-        log_info("Sent subscription request to %s.", jidp->barejid);
+        if (equals_our_barejid(jidp->barejid)) {
+            cons_show("Subscription to yourself is implicit.");
+        } else {
+            presence_subscription(jidp->barejid, PRESENCE_SUBSCRIBE);
+            cons_show("Sent subscription request to %s.", jidp->barejid);
+            log_info("Sent subscription request to %s.", jidp->barejid);
+        }
     } else if (strcmp(subcmd, "show") == 0) {
         PContact contact = roster_get_contact(jidp->barejid);
         if ((contact == NULL) || (p_contact_subscription(contact) == NULL)) {

src/xmpp/presence.c

@@ -507,8 +507,8 @@ _unavailable_handler(xmpp_stanza_t* const stanza)
         return;
     }
 
+    auto_char char* status_str = stanza_get_status(stanza, NULL);
     if (strcmp(my_jid->barejid, from_jid->barejid) != 0) {
-        auto_char char* status_str = stanza_get_status(stanza, NULL);
         if (from_jid->resourcepart) {
             sv_ev_contact_offline(from_jid->barejid, from_jid->resourcepart, status_str);
 
@@ -518,6 +518,7 @@ _unavailable_handler(xmpp_stanza_t* const stanza)
         }
     } else {
         if (from_jid->resourcepart) {
+            sv_ev_contact_offline(from_jid->barejid, from_jid->resourcepart, status_str);
             connection_remove_available_resource(from_jid->resourcepart);
         }
     }
@@ -613,8 +614,16 @@ _available_handler(xmpp_stanza_t* const stanza)
 
     Resource* resource = stanza_resource_from_presence(xmpp_presence);
 
+    char* pgpsig = NULL;
+    xmpp_stanza_t* x = xmpp_stanza_get_child_by_ns(stanza, STANZA_NS_SIGNED);
+    if (x) {
+        pgpsig = xmpp_stanza_get_text(x);
+    }
+
     if (g_strcmp0(xmpp_presence->jid->barejid, my_jid->barejid) == 0) {
         connection_add_available_resource(resource);
+        Resource* resource_for_roster = resource_copy(resource);
+        sv_ev_contact_online(xmpp_presence->jid->barejid, resource_for_roster, xmpp_presence->last_activity, pgpsig);
         const char* account_name = session_get_account_name();
         int max_sessions = accounts_get_max_sessions(account_name);
         if (max_sessions > 0) {
@@ -678,16 +687,11 @@ _available_handler(xmpp_stanza_t* const stanza)
             }
         }
     } else {
-        char* pgpsig = NULL;
-        xmpp_stanza_t* x = xmpp_stanza_get_child_by_ns(stanza, STANZA_NS_SIGNED);
-        if (x) {
-            pgpsig = xmpp_stanza_get_text(x);
-        }
         sv_ev_contact_online(xmpp_presence->jid->barejid, resource, xmpp_presence->last_activity, pgpsig);
-        xmpp_ctx_t* ctx = connection_get_ctx();
-        xmpp_free(ctx, pgpsig);
     }
 
+    xmpp_ctx_t* ctx = connection_get_ctx();
+    xmpp_free(ctx, pgpsig);
     stanza_free_presence(xmpp_presence);
 }
 

src/xmpp/resource.c

@@ -75,6 +75,16 @@ resource_destroy(Resource* resource)
     }
 }
 
+Resource*
+resource_copy(Resource* resource)
+{
+    if (resource == NULL) {
+        return NULL;
+    }
+
+    return resource_new(resource->name, resource->presence, resource->status, resource->priority);
+}
+
 gboolean
 valid_resource_presence_string(const gchar* const str)
 {

src/xmpp/resource.h

@@ -22,6 +22,7 @@ typedef struct resource_t
 
 Resource* resource_new(const gchar* const name, resource_presence_t presence, const gchar* const status,
                        const int priority);
+Resource* resource_copy(Resource* resource);
 void resource_destroy(Resource* resource);
 int resource_compare_availability(Resource* first, Resource* second);
 

src/xmpp/roster_list.c

@@ -21,6 +21,7 @@
 #include "xmpp/resource.h"
 #include "xmpp/contact.h"
 #include "xmpp/jid.h"
+#include "xmpp/xmpp.h"
 
 typedef struct prof_roster_t
 {
@@ -366,6 +367,19 @@ roster_add(const char* const barejid, const char* const name, GSList* groups, co
     }
 
     g_hash_table_insert(roster->contacts, strdup(barejid), contact);
+
+    if (equals_our_barejid(barejid)) {
+        GList* resources = connection_get_available_resources();
+        GList* curr = resources;
+        while (curr) {
+            Resource* res = curr->data;
+            Resource* res_copy = resource_copy(res);
+            p_contact_set_presence(contact, res_copy);
+            curr = g_list_next(curr);
+        }
+        g_list_free(resources);
+    }
+
     autocomplete_add(roster->barejid_ac, barejid);
     _add_name_and_barejid(name, barejid);
 

tests/unittests/xmpp/stub_xmpp.c

@@ -610,3 +610,9 @@ void
 blocked_ac_reset(void)
 {
 }
+
+GList*
+connection_get_available_resources(void)
+{
+    return NULL;
+}