util/fuzz-tests: Add fuzzer for jpeg decoder

Mostly a proof of concept for adding fuzzing to our tree.

Change-Id: I10e5ef3a426b9c74c288d7232a6d11a1ca59833b
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/12183
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

util/fuzz-tests/jpeg-test.c

@@ -0,0 +1,53 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program 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; version 2 of the License.
+ *
+ * This program 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.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "jpeg.h"
+
+const int depth = 16;
+
+int main(int argc, char **argv)
+{
+	FILE *f = fopen(argv[1], "rb");
+	unsigned long len;
+
+	if (!f)
+		return 1;
+	if (fseek(f, 0, SEEK_END) != 0)
+		return 1;
+	len = ftell(f);
+	if (fseek(f, 0, SEEK_SET) != 0)
+		return 1;
+
+	char *buf = malloc(len);
+	struct jpeg_decdata *decdata = malloc(sizeof(*decdata));
+	if (fread(buf, len, 1, f) != 1)
+		return 1;
+	fclose(f);
+
+	int width;
+	int height;
+	jpeg_fetch_size(buf, &width, &height);
+	//printf("width: %d, height: %d\n", width, height);
+	char *pic = malloc(depth / 8 * width * height);
+	int ret = jpeg_decode(buf, pic, width, height, depth, decdata);
+	//printf("ret: %x\n", ret);
+	return ret;
+}