oss-fuzz: add new sdp parser fuzzer

test/fuzz/fuzz_sdp_parser.c

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2026 OpenSIPS Solutions
+ *
+ * This file is part of opensips, a free SIP server.
+ *
+ * opensips is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version
+ *
+ * opensips is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,USA
+ */
+
+#include "../parser/sdp/sdp.h"
+
+#include "../cachedb/test/test_cachedb.h"
+#include "../lib/test/test_csv.h"
+#include "../mem/test/test_malloc.h"
+#include "../str.h"
+
+#include "../context.h"
+#include "../dprint.h"
+#include "../globals.h"
+#include "../lib/list.h"
+#include "../sr_module.h"
+#include "../sr_module_deps.h"
+
+#include "../test/fuzz/fuzz_standalone.h"
+
+int LLVMFuzzerTestOneInput(const char *data, size_t size) {
+  if (size <= 1) {
+    return 0;
+  }
+
+  str sdp_body = { (char*)data, (int)size };
+  sdp_info_t* sdp = new_sdp();
+  if (sdp) {
+    str cnt_disp = {NULL, 0};
+    parse_sdp_session(&sdp_body, 0, &cnt_disp, sdp);
+    free_sdp(sdp);
+  }
+
+  return 0;
+}

test/fuzz/oss-fuzz-build.sh

@@ -52,7 +52,7 @@ ${MAKE} static
 rm -f main.o libopensips.a
 ar -cr libopensips.a `find . -name "*.o" | grep -v '/fuzz_.*.o$'`
 
-for fuzn in msg_parser uri_parser csv_parser core_funcs
+for fuzn in msg_parser uri_parser csv_parser core_funcs sdp_parser
 do
   $CC $CFLAGS $LIB_FUZZING_ENGINE ./parser/fuzz_${fuzn}.o libopensips.a  ${LIBS} -o $OUT/fuzz_${fuzn}
   if [ -e test/fuzz/fuzz_${fuzn}.dict ]