[glib: 2/3] fuzzing: Test URI parsing with and without the strict flag

[Philip Withnall <pwithnall src gnome org>]

commit 39f8aff8f5158f24fa6a47cd8655a49eb4d72c7d
Author: Philip Withnall <withnall endlessm com>
Date:   Tue Jun 30 11:10:51 2020 +0100

    fuzzing: Test URI parsing with and without the strict flag
    
    This should test a few more code paths.
    
    Signed-off-by: Philip Withnall <withnall endlessm com>

 fuzzing/fuzz_uri_parse.c | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)
---
diff --git a/fuzzing/fuzz_uri_parse.c b/fuzzing/fuzz_uri_parse.c
index d878b80cc..4faed62a1 100644
--- a/fuzzing/fuzz_uri_parse.c
+++ b/fuzzing/fuzz_uri_parse.c
@@ -1,30 +1,38 @@
 #include "fuzz.h"
 
-int
-LLVMFuzzerTestOneInput (const unsigned char *data, size_t size)
+static void
+test_with_flags (const gchar *data,
+                 GUriFlags    flags)
 {
-  unsigned char *nul_terminated_data = NULL;
   GUri *uri = NULL;
   gchar *uri_string = NULL;
-  const GUriFlags flags = G_URI_FLAGS_NONE;
-
-  fuzz_set_logging_func ();
 
-  /* ignore @size (g_uri_parse() doesn’t support it); ensure @data is nul-terminated */
-  nul_terminated_data = (unsigned char *) g_strndup ((const gchar *) data, size);
-  uri = g_uri_parse ((const gchar *) nul_terminated_data, flags, NULL);
-  g_free (nul_terminated_data);
+  uri = g_uri_parse (data, flags, NULL);
 
   if (uri == NULL)
-    return 0;
+    return;
 
   uri_string = g_uri_to_string (uri);
   g_uri_unref (uri);
 
   if (uri_string == NULL)
-    return 0;
+    return;
 
   g_free (uri_string);
+}
+
+int
+LLVMFuzzerTestOneInput (const unsigned char *data, size_t size)
+{
+  unsigned char *nul_terminated_data = NULL;
+
+  fuzz_set_logging_func ();
+
+  /* ignore @size (g_uri_parse() doesn’t support it); ensure @data is nul-terminated */
+  nul_terminated_data = (unsigned char *) g_strndup ((const gchar *) data, size);
+  test_with_flags ((const gchar *) nul_terminated_data, G_URI_FLAGS_NONE);
+  test_with_flags ((const gchar *) nul_terminated_data, G_URI_FLAGS_PARSE_STRICT);
+  g_free (nul_terminated_data);
 
   return 0;
 }