Squashed 'external/toxcore/c-toxcore/' changes from 1828c5356..c9cdae001

c9cdae001 fix(toxav): remove extra copy of video frame on encode
4f6d4546b test: Improve the fake network library.
a2581e700 refactor(toxcore): generate `Friend_Request` and `Dht_Nodes_Response`
2aaa11770 refactor(toxcore): use Tox_Memory in generated events
5c367452b test(toxcore): fix incorrect mutex in tox_scenario_get_time
8f92e710f perf: Add a timed limit of number of cookie requests.
695b6417a test: Add some more simulated network support.
815ae9ce9 test(toxcore): fix thread-safety in scenario framework
6d85c754e test(toxcore): add unit tests for net_crypto
9c22e79cc test(support): add SimulatedEnvironment for deterministic testing
f34fcb195 chore: Update windows Dockerfile to debian stable (trixie).
ece0e8980 fix(group_moderation): allow validating unsorted sanction list signatures
a4fa754d7 refactor: rename struct Packet to struct Net_Packet
d6f330f85 cleanup: Fix some warnings from coverity.
e206bffa2 fix(group_chats): fix sync packets reverting topics
0e4715598 test: Add new scenario testing framework.
668291f44 refactor(toxcore): decouple Network_Funcs from sockaddr via IP_Port
fc4396cef fix: potential division by zero in toxav and unsafe hex parsing
8e8b352ab refactor: Add nullable annotations to struct members.
7740bb421 refactor: decouple net_crypto from DHT
1936d4296 test: add benchmark for toxav audio and video
46bfdc2df fix: correct printf format specifiers for unsigned integers
REVERT: 1828c5356 fix(toxav): remove extra copy of video frame on encode

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: c9cdae001341e701fca980c9bb9febfeb95d2902

other/bootstrap_daemon/src/config.c

@@ -312,6 +312,20 @@ bool get_general_config(const char *cfg_file_path, char **pid_file_path, char **
     return true;
 }
 
+static int hex_digit_to_int(char c)
+{
+    if (c >= '0' && c <= '9') {
+        return c - '0';
+    }
+    if (c >= 'a' && c <= 'f') {
+        return c - 'a' + 10;
+    }
+    if (c >= 'A' && c <= 'F') {
+        return c - 'A' + 10;
+    }
+    return -1;
+}
+
 /**
  *
  * Converts a hex string with even number of characters into binary.
@@ -337,9 +351,15 @@ static uint8_t *bootstrap_hex_string_to_bin(const char *hex_string)
     const char *pos = hex_string;
 
     for (size_t i = 0; i < len; ++i, pos += 2) {
-        unsigned int val;
-        sscanf(pos, "%02x", &val);
-        ret[i] = val;
+        const int hi = hex_digit_to_int(pos[0]);
+        const int lo = hex_digit_to_int(pos[1]);
+
+        if (hi == -1 || lo == -1) {
+            free(ret);
+            return nullptr;
+        }
+
+        ret[i] = (uint8_t)((hi << 4) | lo);
     }
 
     return ret;