thodg/libgit2/tests/refs/basic.c

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• Hash : e5851c62
  Author :
  Date : 2021-04-24T09:44:45
  

  refs: ensure loose refs adhere to path validation On Windows, we need to enforce MAX_PATH for loose references and their reflogs. Ensure that any path - including the lock file - would fit within the 260 character maximum. We do not honor core.longpaths for loose reference files or reflogs. core.longpaths only applies to paths in the working directory.

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• tests/refs/basic.c

• #include "clar_libgit2.h"
  
  #include "futils.h"
  #include "refs.h"
  #include "ref_helpers.h"
  
  static git_repository *g_repo;
  
  static const char *loose_tag_ref_name = "refs/tags/e90810b";
  
  void test_refs_basic__initialize(void)
  {
  	g_repo = cl_git_sandbox_init("testrepo");
  	cl_git_pass(git_repository_set_ident(g_repo, "me", "foo@example.com"));
  }
  
  void test_refs_basic__cleanup(void)
  {
  	cl_git_sandbox_cleanup();
  }
  
  void test_refs_basic__reference_realloc(void)
  {
  	git_reference *ref;
  	git_reference *new_ref;
  	const char *new_name = "refs/tags/awful/name-which-is/clearly/really-that-much/longer-than/the-old-one";
  
  	/* Retrieval of the reference to rename */
  	cl_git_pass(git_reference_lookup(&ref, g_repo, loose_tag_ref_name));
  
  	new_ref = git_reference__realloc(&ref, new_name);
  	cl_assert(new_ref != NULL);
  	git_reference_free(new_ref);
  	git_reference_free(ref);
  
  	/* Reload, so we restore the value */
  	cl_git_pass(git_reference_lookup(&ref, g_repo, loose_tag_ref_name));
  
  	cl_git_pass(git_reference_rename(&new_ref, ref, new_name, 1, "log message"));
  	cl_assert(ref != NULL);
  	cl_assert(new_ref != NULL);
  	git_reference_free(new_ref);
  	git_reference_free(ref);
  }
  
  void test_refs_basic__longpaths(void)
  {
  #ifdef GIT_WIN32
  	const char *base;
  	size_t base_len, extra_len;
  	ssize_t remain_len, i;
  	git_buf refname = GIT_BUF_INIT;
  	git_reference *one = NULL, *two = NULL;
  	git_oid id;
  
  	cl_git_pass(git_oid_fromstr(&id, "099fabac3a9ea935598528c27f866e34089c2eff"));
  
  	base = git_repository_path(g_repo);
  	base_len = git_utf8_char_length(base, strlen(base));
  	extra_len = CONST_STRLEN("logs/refs/heads/") + CONST_STRLEN(".lock");
  
  	remain_len = (ssize_t)MAX_PATH - (base_len + extra_len);
  	cl_assert(remain_len > 0);
  
  	cl_git_pass(git_buf_puts(&refname, "refs/heads/"));
  
  	for (i = 0; i < remain_len; i++) {
  		cl_git_pass(git_buf_putc(&refname, 'a'));
  	}
  
  	/*
  	 * The full path to the reflog lockfile is 260 characters,
  	 * this is permitted.
  	 */
  	cl_git_pass(git_reference_create(&one, g_repo, refname.ptr, &id, 0, NULL));
  
  	/* Adding one more character gives us a path that is too long. */
  	cl_git_pass(git_buf_putc(&refname, 'z'));
  	cl_git_fail(git_reference_create(&two, g_repo, refname.ptr, &id, 0, NULL));
  
  	git_reference_free(one);
  	git_reference_free(two);
  #endif
  }
  

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