From e5fa4cdfb0469ed615d0f778b95b0755bfd7c9ca Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Date: Sun, 25 Aug 2019 13:46:21 +0200
Subject: Add minimal test program for fuzzing the fstree_from_file parser

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
---
 .gitignore          |  1 +
 tests/Makemodule.am |  5 +++++
 tests/fstree_fuzz.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 49 insertions(+)
 create mode 100644 tests/fstree_fuzz.c

diff --git a/.gitignore b/.gitignore
index 3f0a58e..f214ad1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,6 +24,7 @@ sqfs2tar
 tar2sqfs
 sqfsdiff
 tar_fuzz
+fstree_fuzz
 test_*
 test-*
 fscompare
diff --git a/tests/Makemodule.am b/tests/Makemodule.am
index 67f5642..f84852a 100644
--- a/tests/Makemodule.am
+++ b/tests/Makemodule.am
@@ -82,6 +82,9 @@ if HAVE_PTHREAD
 test_blk_proc_order_CPPFLAGS += -DHAVE_PTHREAD
 endif
 
+fstree_fuzz_SOURCES = tests/fstree_fuzz.c
+fstree_fuzz_LDADD = libfstree.a libutil.a
+
 check_PROGRAMS += test_canonicalize_name test_mknode_simple test_mknode_slink
 check_PROGRAMS += test_mknode_reg test_mknode_dir test_gen_inode_table
 check_PROGRAMS += test_add_by_path test_get_path test_fstree_sort
@@ -91,6 +94,8 @@ check_PROGRAMS += test_tar_sparse_gnu1 test_tar_sparse_gnu2
 check_PROGRAMS += test_tar_xattr_bsd test_tar_xattr_schily test_str_table
 check_PROGRAMS += test_blk_proc_order
 
+noinst_PROGRAMS += fstree_fuzz
+
 TESTS += test_canonicalize_name test_mknode_simple test_mknode_slink
 TESTS += test_mknode_reg test_mknode_dir test_gen_inode_table
 TESTS += test_add_by_path test_get_path test_fstree_sort test_fstree_from_file
diff --git a/tests/fstree_fuzz.c b/tests/fstree_fuzz.c
new file mode 100644
index 0000000..a9df1ab
--- /dev/null
+++ b/tests/fstree_fuzz.c
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * fstree_fuzz.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+
+#include "fstree.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+	int ret = EXIT_FAILURE;
+	fstree_t fs;
+	FILE *fp;
+
+	if (argc != 2) {
+		fputs("Usage: fstree_fuzz <input_file>\n", stderr);
+		return EXIT_FAILURE;
+	}
+
+	fp = fopen(argv[1], "r");
+	if (fp == NULL) {
+		perror(argv[1]);
+		return EXIT_FAILURE;
+	}
+
+	if (fstree_init(&fs, 512, NULL))
+		goto out_fp;
+
+	if (fstree_from_file(&fs, argv[1], fp))
+		goto out_fs;
+
+	ret = EXIT_SUCCESS;
+out_fs:
+	fstree_cleanup(&fs);
+out_fp:
+	fclose(fp);
+	return ret;
+}
-- 
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