[FIX/CI] Make the C compiler less stupid

(You may notice that the dates for these commits are off. I'm
currently writing them without an Internet connection, and the
device I'm writing this through doesn't have an RTC. Oops!)

CHANGELOG.md

@@ -13,17 +13,22 @@ commit done between releases.
 *There is currently no beta releases of Parsee*
 
 ## Alpha
-### v0.2.0[star-of-hope] <X/X/XXXX>
+### v0.2.0[star-of-hope] <X/X/2024?>
 Fixes some media metadata things, replaces the build system,
 tries out avatar support some more and speeds up Parsee a tad 
 bit.
 #### New things
-- Start dealing with some basic PEP and vCard-based avatars.
-- Allows experimental MbedTLS through a specific Cytoplasm 
-patch.
-- Banning Parsee from a XMPP MUC effectively unlinks it.
-- Start adding basic documentation to Parsee
+- Start dealing with some basic PEP and vCard-based avatar 
+support from both sides.
+- Banning Parsee from a XMPP MUC effectively unlinks it from 
+the MUC.
+- Start adding basic documentation to Parsee, through the 
+wiki page.
 - Add MUC whitelists for plumbing, alongside a `whitelist` tool
+- Add (yet unused) parameter for setting the max stanza size 
+allowed.
+- Allows experimental MbedTLS through a specific Cytoplasm 
+patch (though still unstable AND slow).
 
 #### Bugfixes
 - Adds more information to media events so that clients can 
@@ -34,10 +39,20 @@ Android's weird rendering.
 - Start fixing bug where Parsee takes several seconds to send 
 a message coming from XMPP with MbedTLS(it is still slow and 
 unstable)
+- Fix issue where the XMPP server would kill Parsee if avatars 
+are too large.
+- Refactor some of the code to abstract sending stanzas down 
+the wire to a specific function, thus allowing us to check 
+for certain conditions more easily(for example, verifying the 
+size on the fly, or having extensions being able to postprocess 
+the stanza).
+- Parsee now stops when a stream error is received, instead of 
+being in a limbo state.
 
 #### Deprecated features
 - The old `build.c` and `Makefile`s used for building are removed, 
 and replaced by the `configure.c` C file(/script via TCC).
+
 ### v0.1.0[tomboyish-bridges-adventure] <9/9/2024>
 Nothing much to say, but this is the first alpha release 
 of Parsee. May occasionally deadlock.

src/Parsee/Data.c

@@ -588,7 +588,7 @@ ParseeUnlinkRoom(ParseeData *data, char *chat_id)
 bool 
 ParseeIsMUCWhitelisted(ParseeData *data, char *muc)
 {
-    char *server, *serv_start;
+    char *server, *serv_start, *postserv;
     DbRef *ref;
     bool ret;
     if (!data || !muc)
@@ -604,9 +604,10 @@ ParseeIsMUCWhitelisted(ParseeData *data, char *muc)
     serv_start = strchr(muc, '@');
     serv_start = serv_start ? serv_start : muc;
     server = StrDuplicate(serv_start + 1);
-    if (strchr(server, '/'))
+    postserv = server ? strchr(server, '/') : NULL;
+    if (postserv)   /* GCC doesn't know strchr is pure. */
     {
-        *(strchr(server, '/')) = '\0';
+        *postserv = '\0';
     }
     
     ref = DbLockIntent(data->db, 

src/XMPPThread/Bridged.c

@@ -121,7 +121,7 @@ ParseeVerifyAllStanza(ParseeData *args, XMLElement *stanza)
 bool
 ServerHasXEP421(ParseeData *data, char *from)
 {
-    char *server = NULL, *parsee;
+    char *server = NULL, *postserv, *parsee;
     XMLElement *disco;
     bool ret = false;
     if (!data || !from)
@@ -140,9 +140,10 @@ ServerHasXEP421(ParseeData *data, char *from)
     }
 
     server = StrDuplicate(server);
-    if (strchr(server, '/'))
+    postserv = server ? strchr(server, '/') : NULL;
+    if (postserv)
     {
-        *(strchr(server, '/')) = '\0';
+        *postserv = '\0';
     }
 
     parsee = ParseeJID(data);