2 files changed, 56 insertions, 1 deletions
diff --git a/tests/Makemodule.am b/tests/Makemodule.am
index f84852a..c6ba1d9 100644
--- a/tests/Makemodule.am
+++ b/tests/Makemodule.am
@@ -85,6 +85,9 @@ endif
 fstree_fuzz_SOURCES = tests/fstree_fuzz.c
 fstree_fuzz_LDADD = libfstree.a libutil.a
 
+tar_fuzz_SOURCES = tests/tar_fuzz.c
+tar_fuzz_LDADD = libtar.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
@@ -94,7 +97,7 @@ 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
+noinst_PROGRAMS += fstree_fuzz tar_fuzz
 
 TESTS += test_canonicalize_name test_mknode_simple test_mknode_slink
 TESTS += test_mknode_reg test_mknode_dir test_gen_inode_table
diff --git a/tests/tar_fuzz.c b/tests/tar_fuzz.c
new file mode 100644
index 0000000..4dc20f5
--- /dev/null
+++ b/tests/tar_fuzz.c
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * tar_fuzz.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+
+#include "util.h"
+#include "tar.h"
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+
+int main(int argc, char **argv)
+{
+	tar_header_decoded_t hdr;
+	int fd, ret;
+
+	if (argc != 2) {
+		fputs("usage: tar_fuzz <tarball>\n", stderr);
+		return EXIT_FAILURE;
+	}
+
+	fd = open(argv[1], O_RDONLY);
+	if (fd < 0) {
+		perror(argv[1]);
+		return EXIT_FAILURE;
+	}
+
+	for (;;) {
+		ret = read_header(fd, &hdr);
+		if (ret > 0)
+			break;
+		if (ret < 0)
+			goto fail;
+
+		ret = lseek(fd, hdr.sb.st_size, SEEK_CUR);
+
+		clear_header(&hdr);
+		if (ret)
+			goto fail;
+	}
+
+	close(fd);
+	return EXIT_SUCCESS;
+fail:
+	close(fd);
+	return EXIT_FAILURE;
+}