From 47823ba56b2422749971275f9221c204584aa74f Mon Sep 17 00:00:00 2001
From: LDA <lda@ari.lt>
Date: Sun, 7 Jul 2024 23:59:13 +0200
Subject: [PATCH] [MOD] Actually redact

---
 src/AS.c         | 50 +++++++++++++++++++++++++++++++++++++++++++++++-
 src/XMPPThread.c |  7 +------
 src/include/AS.h |  3 +++
 3 files changed, 53 insertions(+), 7 deletions(-)

diff --git a/src/AS.c b/src/AS.c
index c49b8dc..8415148 100644
--- a/src/AS.c
+++ b/src/AS.c
@@ -858,7 +858,6 @@ ASGetUserConfig(const ParseeConfig *c, char *user, char *key)
 void
 ASSetUserConfig(const ParseeConfig *c, char *user, char *key, HashMap *map)
 {
-
     HttpClientContext *ctx = NULL;
     char *path;
     if (!c || !key || !map)
@@ -898,3 +897,52 @@ ASSetUserConfig(const ParseeConfig *c, char *user, char *key, HashMap *map)
 
     return;
 }
+void
+ASRedact(const ParseeConfig *c, char *room, char *user, char *e_id)
+{
+    HttpClientContext *ctx = NULL;
+    HashMap *request;
+    char *path, *txn;
+    if (!c || !room || !e_id)
+    {
+        return;
+    }
+
+    if (!user)
+    {
+        char *raw = StrConcat(4, 
+            "@", c->sender_localpart, 
+            ":", c->homeserver_host
+        );
+        user = HttpUrlEncode(raw);
+        Free(raw);
+    }
+    else
+    {
+        user = HttpUrlEncode(user);
+    }
+    room = HttpUrlEncode(room);
+    e_id = HttpUrlEncode(e_id);
+    txn = StrRandom(16);
+
+    path = StrConcat(9, 
+        "/_matrix/client/v3/rooms/",
+        room, "/redact/", e_id, "/", txn,
+        "?", "user_id=", user
+    );
+
+    request = HashMapCreate();
+    ctx = ParseeCreateRequest(c, HTTP_PUT, path);
+    Free(path);
+    ASAuthenticateRequest(c, ctx);
+    ParseeSetRequestJSON(ctx, request);
+    JsonFree(request);
+
+    HttpClientContextFree(ctx);
+    Free(user);
+    Free(room);
+    Free(e_id);
+    Free(txn);
+
+    return;
+}
diff --git a/src/XMPPThread.c b/src/XMPPThread.c
index 0ed5421..410ea38 100644
--- a/src/XMPPThread.c
+++ b/src/XMPPThread.c
@@ -621,13 +621,8 @@ MessageStanza(ParseeData *args, XMLElement *stanza, XMPPThread *thr)
             }
             else if (retracted)
             {
-                /* TODO: Use an actual redact. Not doing it now because it's not 
-                 * fun to do at the moment... */
                 event_id = ParseeGetEventFromID(args, stanza, retracted);
-                Free(ASSend(
-                    args->config, mroom_id, encoded, "m.room.message", 
-                    MatrixCreateReplace(event_id, "[Retracted]")
-                ));
+                ASRedact(args->config, mroom_id, encoded, event_id);
                 ParseePushAllStanza(args, stanza, event_id);
                 pthread_mutex_unlock(&thr->info->chk_lock);
 
diff --git a/src/include/AS.h b/src/include/AS.h
index f029f9c..4000c9a 100644
--- a/src/include/AS.h
+++ b/src/include/AS.h
@@ -43,6 +43,9 @@ extern char * ASSend(const ParseeConfig *, char *, char *, char *, HashMap *);
 extern void ASType(const ParseeConfig *, char *, char *, bool);
 extern void ASPresence(const ParseeConfig *, char *, char *, char *);
 
+/* Redacts an event from a room with a specific user */
+extern void ASRedact(const ParseeConfig *, char *room, char *user, char *e_id);
+
 /* Sets a state event with a specific type and body */
 extern void ASSetState(const ParseeConfig *conf, char *id, char *type, char *key, char *mask, HashMap *event);