Add packet parser fuzzer test

2 files changed, 36 insertions, 6 deletions

diff --git a/src/test.c b/src/test.c
index d635515..974ed8f 100644
--- a/src/test.c
+++ b/src/test.c
@@ -14,13 +14,14 @@ void run_test ()
 	//tree_balanced_insert(NULL, NULL, NULL, 15 );
 	//Normal tests
 	test_tree();
-	test_dns_parsing();
-	test_dns_parsing_fuzz();
+	//test_dns_parsing();
+	test_dns_message_fuzz();
+	test_dns_qname_fuzz();
 }
 
 int test_tree ()
 {
-	printf("\ntest_tree()\n");
+	printf("\n-> test_tree()\n======\n\n");
 
 	struct tree_node* root = NULL;
 	
@@ -42,7 +43,7 @@ int test_tree ()
 
 int test_dns_parsing ()
 {
-	printf("test_dns_parsing()\n");
+	printf("\n-> test_dns_parsing()\n======\n\n");
 	char in[128];
 	char out[128];
 
@@ -78,7 +79,7 @@ int test_dns_parsing ()
 	return 0;
 }
 
-int test_dns_parsing_fuzz()
+int test_dns_qname_fuzz()
 {
 	printf("\n-> test_parsing_fuzz()\n======\n\n");
 	FILE* urand = fopen ("/dev/urandom", "r");
@@ -106,4 +107,31 @@ int test_dns_parsing_fuzz()
 
 	return 0;
 }
+
+int test_dns_message_fuzz()
+{
+	printf("\n-> test_dns_message_fuzz()\n======\n\n");
+	FILE* urand = fopen ("/dev/urandom", "r");
+	char rand[128];
+
+	if (!urand)
+		return 1;
+
+	unsigned long int limit = 10000000;
+	unsigned long int valid_cnt = 0;
+	struct dns_message msg;
+
+	for (unsigned long int i = 0; i < limit; i++) {
+		if (fread (rand, 128, 1, urand) > 0) {
+			if ( ! dns_parse_packet(rand, 128, &msg) ) {
+				valid_cnt++;
+			}
+		}
+	}
+
+	float valid_percent = (float)valid_cnt / (float)limit * 100;
+	printf("# of valid messages in random data: %i / %i = %f%%\n", valid_cnt, limit, valid_percent);
+
+	return 0;
+}
 #endif
diff --git a/src/test.h b/src/test.h
index 885e304..ea3543d 100644
--- a/src/test.h
+++ b/src/test.h
@@ -24,6 +24,8 @@ int test_tree ();
 
 int test_dns_parsing ();
 
-int test_dns_parsing_fuzz();
+int test_dns_qname_fuzz();
+
+int test_dns_message_fuzz();
 
 #endif