#include "clar_libgit2.h"

#include "hash.h"

#define FIXTURE_DIR "sha1"

void test_core_sha1__initialize(void)

{

	cl_fixture_sandbox(FIXTURE_DIR);

}

void test_core_sha1__cleanup(void)

{

	cl_fixture_cleanup(FIXTURE_DIR);

}

static int sha1_file(git_oid *oid, const char *filename)

{

	git_hash_ctx ctx;

	char buf[2048];

	int fd, ret;

	ssize_t read_len;

	fd = p_open(filename, O_RDONLY);

	cl_assert(fd >= 0);

	cl_git_pass(git_hash_ctx_init(&ctx));

	while ((read_len = p_read(fd, buf, 2048)) > 0)

		cl_git_pass(git_hash_update(&ctx, buf, (size_t)read_len));

	cl_assert_equal_i(0, read_len);

	p_close(fd);

	ret = git_hash_final(oid, &ctx;;

	git_hash_ctx_cleanup(&ctx;;

	return ret;

}

void test_core_sha1__sum(void)

{

	git_oid oid, expected;

	cl_git_pass(sha1_file(&oid, FIXTURE_DIR "/hello_c"));

	git_oid_fromstr(&expected, "4e72679e3ea4d04e0c642f029e61eb8056c7ed94");

	cl_assert_equal_oid(&expected, &oid;;

}

/* test that sha1 collision detection works when enabled */

void test_core_sha1__detect_collision_attack(void)

{

	git_oid oid, expected;

#ifdef GIT_SHA1_COLLISIONDETECT

	GIT_UNUSED(expected);

	cl_git_fail(sha1_file(&oid, FIXTURE_DIR "/shattered-1.pdf"));

	cl_assert_equal_s("SHA1 collision attack detected", giterr_last()->message);

#else

	cl_git_pass(sha1_file(&oid, FIXTURE_DIR "/shattered-1.pdf"));

	git_oid_fromstr(&expected, "38762cf7f55934b34d179ae6a4c80cadccbb7f0a");

	cl_assert_equal_oid(&expected, &oid;;

#endif

}