From afc9e0e5dc3389e25c42aba579f792310abcec0d Mon Sep 17 00:00:00 2001
From: LoaD Accumulator <lda@noreply.git.telodendria.io>
Date: Mon, 11 Sep 2023 10:57:16 -0400
Subject: [PATCH 1/2] Fixes issue #33 related to a memory issue, and format
 some code. (#35)

Fixes #33.

Co-authored-by: LoaD Accumulator <lda@freetards.xyz>
Reviewed-on: https://git.telodendria.io/Telodendria/telodendria/pulls/35
Co-authored-by: LoaD Accumulator <lda@noreply.git.telodendria.io>
Co-committed-by: LoaD Accumulator <lda@noreply.git.telodendria.io>
---
 Cytoplasm/src/HttpRouter.c    | 8 ++++++--
 Cytoplasm/src/Str.c           | 1 -
 src/Routes/RouteUserProfile.c | 5 ++++-
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/Cytoplasm/src/HttpRouter.c b/Cytoplasm/src/HttpRouter.c
index 87ddae0..bd06c64 100644
--- a/Cytoplasm/src/HttpRouter.c
+++ b/Cytoplasm/src/HttpRouter.c
@@ -196,7 +196,7 @@ HttpRouterRoute(HttpRouter * router, char *path, void *args, void **ret)
     char *pathPart;
     char *tmp;
     HttpRouteFunc *exec = NULL;
-    Array *matches;
+    Array *matches = NULL;
     size_t i;
     int retval;
 
@@ -254,14 +254,18 @@ HttpRouterRoute(HttpRouter * router, char *path, void *args, void **ret)
             {
                 /* pmatch[0] is the whole string, not the first
                  * subexpression */
+                char * substr;
+                regmatch_t cpmatch;
                 for (i = 1; i < REG_MAX_SUB; i++)
                 {
+                    cpmatch = pmatch[i];
+                    substr = StrSubstr(pathPart, cpmatch.rm_so, cpmatch.rm_eo);
                     if (pmatch[i].rm_so == -1)
                     {
                         break;
                     }
 
-                    ArrayAdd(matches, StrSubstr(pathPart, pmatch[i].rm_so, pmatch[i].rm_eo));
+                    ArrayAdd(matches, substr);
                 }
             }
         }
diff --git a/Cytoplasm/src/Str.c b/Cytoplasm/src/Str.c
index 98dea0b..2f4c665 100644
--- a/Cytoplasm/src/Str.c
+++ b/Cytoplasm/src/Str.c
@@ -147,7 +147,6 @@ StrSubstr(const char *inStr, size_t start, size_t end)
     }
 
     len = end - start;
-
     outStr = Malloc(len + 1);
     if (!outStr)
     {
diff --git a/src/Routes/RouteUserProfile.c b/src/Routes/RouteUserProfile.c
index 0c99338..5b795c2 100644
--- a/src/Routes/RouteUserProfile.c
+++ b/src/Routes/RouteUserProfile.c
@@ -172,7 +172,10 @@ ROUTE_IMPL(RouteUserProfile, path, argp)
     }
 finish:
     ConfigUnlock(config);
-    Free(username);
+
+    /* Username is handled by the router, freeing it *will* cause issues
+     * (see #33). I honestly don't know how it didn't come to bite us sooner. 
+    Free(username); */
     Free(entry);
     UserIdFree(userId);
     UserUnlock(user);

From f4cb10804a4baba8d6c59390a7ece66a1f8ea43c Mon Sep 17 00:00:00 2001
From: Jordan Bancino <jordan@bancino.net>
Date: Mon, 11 Sep 2023 11:01:50 -0400
Subject: [PATCH 2/2] Add change log entry for #35.

---
 docs/CHANGELOG.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 15bb2ce..a1b9bf2 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -19,6 +19,11 @@ The following endpoints were added:
 - **POST** `/_matrix/client/v3/user/{userId}/filter`
 - **GET** `/_matrix/client/v3/user/{userId}/filter/{filterId}`
 
+### Bug Fixes
+
+- Fixed a double-free in `RouteUserProfile()` that would cause errors with certain
+Matrix clients. (#35)
+
 ## v0.3.0
 
 **Saturday, June 10, 2023**