thodg/libgit2/tests/core/sha1.c

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• Hash : 31ecaca2
  Author :
  Date : 2021-09-30T08:11:40
  

  hash: hash functions operate on byte arrays not git_oids Separate the concerns of the hash functions from the git_oid functions. The git_oid structure will need to understand either SHA1 or SHA256; the hash functions should only deal with the appropriate one of these.

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• tests/core/sha1.c

• #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 *out, 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, GIT_HASH_ALGORITHM_SHA1));
  
  	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(out->id, &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", git_error_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
  }
  
  

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