[FIX/WIP] Fix join rules

I'll still need to notify users that they're *in* the room, instead of
just poking at the state.

But this should allow users to send events to the same room.

src/Room.c

@@ -189,26 +189,26 @@ RoomPopulate(Room *room, User *user, RoomCreateRequest *req, ServerPart s)
     }
 
     /* Write out presets */
-#define SetIfExistent(pset) do { \
+#define SetIfExistent(p,a)  do { \
-                                if (pset##_preset) \
+                                if (p##_preset) \
                                 { \
                                     content = HashMapCreate(); \
                                     JsonSet( \
                                         content, \
                                         JsonValueString(join_rules_preset) \
-                                        , 1, #pset); \
+                                        , 1, a); \
                                     event = RoomEventCreate( \
                                         sender_str,  \
-                                        "m.room." #pset, "", content); \
+                                        "m.room." #p, "", content); \
                                     JsonFree(RoomEventSend(room, event)); \
                                     JsonFree(event); \
                                 } \
                             } \
                             while (0)
     
-    SetIfExistent(join_rules);
+    SetIfExistent(join_rules, "join_rule");
-    SetIfExistent(history_visibility);
+    SetIfExistent(history_visibility, "history_visibility");
-    SetIfExistent(guest_access);
+    SetIfExistent(guest_access, "guest_access");
 #undef SetIfExistent
 
     /* User-provided initial states */
@@ -501,7 +501,7 @@ RoomIsJoinRule(Room * room, HashMap *state, char *jr)
 
     PrepareState(room, state, "m.room.join_rules", "", joinrule);
     ret = StrEquals(
-        JsonValueAsString(JsonGet(joinrule, 1, "join_rule")),
+        JsonValueAsString(JsonGet(joinrule, 2, "content", "join_rule")),
         jr);
 finish:
     FinishState(joinrule);
@@ -1629,7 +1629,7 @@ RoomEventSendV1(Room * room, HashMap * event)
     {
         /* Reject this event as the current state does not allow it.
          * TODO: Make the auth check function return a string showing the 
-         * error status to the user. */
+         * errorr status to the user. */
         goto finish;
     }
     RoomAddEventV1(room, pdu);
@@ -2080,7 +2080,7 @@ RoomCanJoin(Room *room, char *user)
         room,
         StateGet(state, "m.room.join_rules", "")
     );
-    joinRuleV = JsonValueAsString(HashMapGet(joinRule, "join_rule"));
+    joinRuleV = JsonValueAsString(JsonGet(joinRule, 2, "content", "join_rule"));
 
     if (StrEquals(joinRuleV, "public"))
     {

src/Routes/RouteJoinRoom.c

@@ -123,6 +123,14 @@ ROUTE_IMPL(RouteJoinRoom, path, argp)
     sender = ParserRecomposeCommonID(*id);
     
     room = RoomLock(db, roomId);
+    if (!room)
+    {
+
+        err = "Room ID does not exist.";
+        HttpResponseStatus(args->context, HTTP_BAD_REQUEST);
+        response = MatrixErrorCreate(M_UNKNOWN, err);
+        goto finish;
+    }
     if (RoomContainsUser(room, sender))
     {
         err = "User is already in the room.";
@@ -151,6 +159,7 @@ ROUTE_IMPL(RouteJoinRoom, path, argp)
 
 finish:
     UserIdFree(id);
+    JsonFree(request);
     if (sender)
     {
         Free(sender);

src/Routes/RouteVersions.c

@@ -37,6 +37,9 @@ ROUTE_IMPL(RouteVersions, path, argp)
     (void) argp;
 
 #define DECLARE_SPEC_VERSION(x) ArrayAdd(versions, JsonValueString(x))
+    DECLARE_SPEC_VERSION("v1.0");
+    DECLARE_SPEC_VERSION("v1.1");
+
     DECLARE_SPEC_VERSION("v1.2");
     DECLARE_SPEC_VERSION("v1.3");
     DECLARE_SPEC_VERSION("v1.4");