1 files changed, 140 insertions, 0 deletions
diff --git a/tests-fuzz/main.c b/tests-fuzz/main.c
new file mode 100644
index 0000000..e8eb428
--- /dev/null
+++ b/tests-fuzz/main.c
@@ -0,0 +1,140 @@
+/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+ * Copyright (C) 2017 Tim Ruehsen
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+#ifndef __AFL_LOOP
+
+#include <dirent.h>
+
+static void test_all_from(const char *dirname)
+{
+	DIR *dirp = opendir(dirname);
+	if (dirp == NULL) {
+		return;
+	}
+
+	struct dirent *dp;
+	while ((dp = readdir(dirp))) {
+		if (*dp->d_name == '.') {
+			continue;
+		}
+
+		char fname[strlen(dirname) + strlen(dp->d_name) + 2];
+		int ret = snprintf(fname, sizeof(fname), "%s/%s", dirname, dp->d_name);
+		if (ret < 0 || ret >= sizeof(fname)) {
+			fprintf(stderr, "Invalid path %s/%s\n", dirname, dp->d_name);
+		}
+
+		int fd;
+		if ((fd = open(fname, O_RDONLY)) == -1) {
+			fprintf(stderr, "Failed to open %s (%d)\n", fname, errno);
+			continue;
+		}
+
+		struct stat st;
+		if (fstat(fd, &st) != 0) {
+			fprintf(stderr, "Failed to stat %d (%d)\n", fd, errno);
+			close(fd);
+			continue;
+		}
+
+		uint8_t *data = malloc(st.st_size);
+		if (data == NULL) {
+			fprintf(stderr, "Failed to stat %d (%d)\n", fd, ENOMEM);
+			close(fd);
+			continue;
+		}
+
+		ssize_t n;
+		if ((n = read(fd, data, st.st_size)) == st.st_size) {
+			printf("testing %llu bytes from '%s'\n", (unsigned long long) st.st_size, fname);
+			fflush(stdout);
+			LLVMFuzzerTestOneInput(data, st.st_size);
+			fflush(stderr);
+		} else {
+			fprintf(stderr, "Failed to read %llu bytes from %s (%d), got %zd\n",
+			        (unsigned long long) st.st_size, fname, errno, n);
+		}
+
+		free(data);
+		close(fd);
+	}
+	closedir(dirp);
+}
+
+int main(int argc, char **argv)
+{
+	const char *target = strrchr(argv[0], '/');
+	target = target ? target + 1 : argv[0];
+
+	char corporadir[sizeof(SRCDIR) + 1 + strlen(target) + 8];
+
+	if (strncmp(target, "lt-", 3) == 0) {
+		target += 3;
+	}
+
+	int ret = snprintf(corporadir, sizeof(corporadir), SRCDIR "/%s.in", target);
+	if (ret < 0 || ret >= sizeof(corporadir)) {
+		fprintf(stderr, "Invalid path %s/%s\n", SRCDIR "/%s.in", target);
+	}
+
+	test_all_from(corporadir);
+
+	ret = snprintf(corporadir, sizeof(corporadir), SRCDIR "/%s.repro", target);
+	if (ret < 0 || ret >= sizeof(corporadir)) {
+		fprintf(stderr, "Invalid path %s/%s\n", SRCDIR "/%s.repro", target);
+	}
+
+	test_all_from(corporadir);
+
+	return 0;
+}
+
+#else
+
+int main(int argc, char **argv)
+{
+	unsigned char buf[64 * 1024];
+
+	while (__AFL_LOOP(10000)) {
+		int ret = fread(buf, 1, sizeof(buf), stdin);
+		if (ret < 0) {
+			return 0;
+		}
+
+		LLVMFuzzerTestOneInput(buf, ret);
+	}
+
+	return 0;
+}
+
+#endif /* __AFL_LOOP */