[ADD/WIP] Start work to send messages

This commit *works*  but I don't quite like it.

src/Room.c

@@ -341,6 +341,7 @@ RoomCreate(Db * db, User *user, RoomCreateRequest * req, ServerPart s)
     JsonSet(json, JsonValueArray(ArrayCreate()), 1, "leaves");
     full_creator = ParserRecomposeServerPart(room->creator);
     JsonSet(json, JsonValueString(full_creator), 1, "creator");
+    JsonSet(json, JsonValueInteger(version_num), 1, "version");
     Free(full_creator);
 
     RoomPopulate(room, user, req, s);
@@ -380,6 +381,7 @@ RoomLock(Db * db, char *id)
     room->state_ref = state_ref;
     room->leaves_ref = leaves_ref;
     room->id = StrDuplicate(id);
+    room->version = JsonValueAsInteger(HashMapGet(DbJson(leaves_ref), "version"));
 
     json = DbJson(room->leaves_ref);
     ParseServerPart(

src/Routes.c

@@ -142,6 +142,7 @@ RouterBuild(void)
 
     R("/_matrix/client/v3/user/(.*)/filter", RouteFilter);
     R("/_matrix/client/v3/user/(.*)/filter/(.*)", RouteFilter);
+    R("/_matrix/client/v3/rooms/(.*)/send/(.*)/(.*)", RouteSendEvent);
 
     R("/_matrix/client/v3/createRoom", RouteCreateRoom);
 

src/Routes/RouteSendEvent.c

@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2022-2024 Jordan Bancino <@jordan:bancino.net> with
+ * other valuable contributors. See CONTRIBUTORS.txt for the full list.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <Routes.h>
+
+
+#include <Cytoplasm/HashMap.h>
+#include <Cytoplasm/Memory.h>
+#include <Cytoplasm/Json.h>
+#include <Cytoplasm/Str.h>
+
+#include <User.h>
+#include <Room.h>
+#include <string.h>
+
+#include <Schema/Filter.h>
+
+static char *
+GetServerName(Db * db)
+{
+    char *name;
+
+    Config config;
+
+    ConfigLock(db, &config);
+    if (!config.ok)
+    {
+        return NULL;
+    }
+
+    name = StrDuplicate(config.serverName);
+
+    ConfigUnlock(&config);
+
+    return name;
+}
+
+ROUTE_IMPL(RouteSendEvent, path, argp)
+{
+    RouteArgs *args = argp;
+    Db *db = args->matrixArgs->db;
+
+    HashMap *request = NULL, *event = NULL;
+    HashMap *response = NULL, *filled = NULL;
+
+    User *user = NULL;
+    CommonID *id = NULL;
+    char *token = NULL;
+
+    char *serverName = NULL;
+
+    char *roomId = ArrayGet(path, 0);
+    char *eventType = ArrayGet(path, 1);
+    char *transId = ArrayGet(path, 2);
+    char *sender = NULL;
+
+    Room *room = NULL;
+
+    char *err;
+
+    if (!roomId || !eventType || !transId)
+    {
+        /* Should be impossible */
+        HttpResponseStatus(args->context, HTTP_INTERNAL_SERVER_ERROR);
+        return MatrixErrorCreate(M_UNKNOWN, NULL);
+    }
+    if (HttpRequestMethodGet(args->context) != HTTP_PUT)
+    {
+        err = "Unknown request method.";
+        HttpResponseStatus(args->context, HTTP_BAD_REQUEST);
+        response = MatrixErrorCreate(M_UNRECOGNIZED, err);
+        goto finish;
+    }
+
+    serverName = GetServerName(db);
+    if (!serverName)
+    {
+        HttpResponseStatus(args->context, HTTP_INTERNAL_SERVER_ERROR);
+        response = MatrixErrorCreate(M_UNKNOWN, NULL);
+        goto finish;
+    }
+
+    response = MatrixGetAccessToken(args->context, &token);
+    if (response)
+    {
+        goto finish;
+    }
+
+    request = JsonDecode(HttpServerStream(args->context));
+    if (!request)
+    {
+        HttpResponseStatus(args->context, HTTP_BAD_REQUEST);
+        response = MatrixErrorCreate(M_NOT_JSON, NULL);
+        goto finish;
+    }
+
+    user = UserAuthenticate(db, token);
+    if (!user)
+    {
+        HttpResponseStatus(args->context, HTTP_UNAUTHORIZED);
+        response = MatrixErrorCreate(M_UNKNOWN_TOKEN, NULL);
+        goto finish;
+    }
+    id = UserIdParse(UserGetName(user), serverName);
+    id->sigil = '@';
+    sender = ParserRecomposeCommonID(*id);
+
+    if ((response = UserGetTransaction(user, transId, "send")))
+    {
+        goto finish;
+    }
+
+    room = RoomLock(db, roomId);
+    if (!RoomContainsUser(room, sender))
+    {
+        err = "User is not in the room.";
+        HttpResponseStatus(args->context, HTTP_UNAUTHORIZED);
+        response = MatrixErrorCreate(M_FORBIDDEN, err);
+        goto finish;
+    }
+
+    event = RoomEventCreate(sender, eventType, NULL, JsonDuplicate(request));
+    filled = RoomEventSend(room, event);
+    JsonFree(event);
+
+    if (!filled)
+    {
+        err = "User is not allowed to send event.";
+        HttpResponseStatus(args->context, HTTP_UNAUTHORIZED);
+        response = MatrixErrorCreate(M_FORBIDDEN, err);
+        goto finish;
+    }
+
+    response = HashMapCreate();
+    HashMapSet(
+        response, "event_id", 
+        JsonValueDuplicate(HashMapGet(filled, "event_id"))
+    );
+    JsonFree(filled);
+    UserSetTransaction(user, transId, "send", response);
+finish:
+    RoomUnlock(room);
+    Free(serverName);
+    if (sender)
+    {
+        Free(sender);
+    }
+    UserIdFree(id);
+    UserUnlock(user);
+    JsonFree(request);
+    return response;
+}

src/State.c

@@ -240,18 +240,13 @@ StateResolveV2(Array * states)
 static HashMap *
 StateFromPrevs(Room *room, Array *states)
 {
-    HashMap *ret_state;
     switch (RoomVersionGet(room))
     {
         case 1:
-            ret_state = StateResolveV1(room, states);
-            break;
+            return StateResolveV1(room, states);
         default:
-            ret_state = StateResolveV2(states);
-            break;
+            return StateResolveV2(states);
     }
-
-    return ret_state;
 }
 
 HashMap *
@@ -357,9 +352,10 @@ StateCurrent(Room *room)
     for (i = 0; i < ArraySize(prevEvents); i++)
     {
         HashMap *event = 
-            RoomEventFetch(room, JsonValueAsString(ArrayGet(prevEvents, i)));
+            JsonValueAsObject(ArrayGet(prevEvents, i));
         HashMap *state = StateResolve(room, event);
 
+
         if (HashMapGet(event, "state_key"))
         {
             StateSet(

src/include/Routes.h

@@ -100,6 +100,7 @@ ROUTE(RouteConfig);
 ROUTE(RoutePrivileges);
 
 ROUTE(RouteCreateRoom);
+ROUTE(RouteSendEvent);
 
 ROUTE(RouteAliasDirectory);
 ROUTE(RouteRoomAliases);