tests/core/sha1.c

   1 #include "clar_libgit2.h"
   2 #include "hash.h"
   3
   4 #define FIXTURE_DIR "sha1"
   5
   6 void test_core_sha1__initialize(void)
   7 {
   8         cl_fixture_sandbox(FIXTURE_DIR);
   9 }
  10
  11 void test_core_sha1__cleanup(void)
  12 {
  13         cl_fixture_cleanup(FIXTURE_DIR);
  14 }
  15
  16 static int sha1_file(unsigned char *out, const char *filename)
  17 {
  18         git_hash_ctx ctx;
  19         char buf[2048];
  20         int fd, ret;
  21         ssize_t read_len;
  22
  23         fd = p_open(filename, O_RDONLY);
  24         cl_assert(fd >= 0);
  25
  26         cl_git_pass(git_hash_ctx_init(&ctx, GIT_HASH_ALGORITHM_SHA1));
  27
  28         while ((read_len = p_read(fd, buf, 2048)) > 0)
  29                 cl_git_pass(git_hash_update(&ctx, buf, (size_t)read_len));
  30
  31         cl_assert_equal_i(0, read_len);
  32         p_close(fd);
  33
  34         ret = git_hash_final(out, &ctx);
  35         git_hash_ctx_cleanup(&ctx);
  36
  37         return ret;
  38 }
  39
  40 void test_core_sha1__sum(void)
  41 {
  42         unsigned char expected[GIT_HASH_SHA1_SIZE] = {
  43                 0x4e, 0x72, 0x67, 0x9e, 0x3e, 0xa4, 0xd0, 0x4e, 0x0c, 0x64,
  44                 0x2f, 0x02, 0x9e, 0x61, 0xeb, 0x80, 0x56, 0xc7, 0xed, 0x94
  45         };
  46         unsigned char actual[GIT_HASH_SHA1_SIZE];
  47
  48         cl_git_pass(sha1_file(actual, FIXTURE_DIR "/hello_c"));
  49         cl_assert_equal_i(0, memcmp(expected, actual, GIT_HASH_SHA1_SIZE));
  50 }
  51
  52 /* test that sha1 collision detection works when enabled */
  53 void test_core_sha1__detect_collision_attack(void)
  54 {
  55         unsigned char actual[GIT_HASH_SHA1_SIZE];
  56         unsigned char expected[GIT_HASH_SHA1_SIZE] = {
  57                 0x38, 0x76, 0x2c, 0xf7, 0xf5, 0x59, 0x34, 0xb3, 0x4d, 0x17,
  58                 0x9a, 0xe6, 0xa4, 0xc8, 0x0c, 0xad, 0xcc, 0xbb, 0x7f, 0x0a
  59         };
  60
  61 #ifdef GIT_SHA1_COLLISIONDETECT
  62         GIT_UNUSED(&expected);
  63         cl_git_fail(sha1_file(actual, FIXTURE_DIR "/shattered-1.pdf"));
  64         cl_assert_equal_s("SHA1 collision attack detected", git_error_last()->message);
  65 #else
  66         cl_git_pass(sha1_file(actual, FIXTURE_DIR "/shattered-1.pdf"));
  67         cl_assert_equal_i(0, memcmp(expected, actual, GIT_HASH_SHA1_SIZE));
  68 #endif
  69 }
  70