thodg/libgit2/src/path.h

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• Hash : 1728e27c
  Author :
  Date : 2021-11-01T18:19:56
  

  path: length validation respecting core.longpaths Teach `git_path_is_valid` to respect `core.longpaths`. Add helper methods to validate length and set the error message appropriately.

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• src/path.h

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #ifndef INCLUDE_path_h__
  #define INCLUDE_path_h__
  
  #include "common.h"
  
  #include "fs_path.h"
  #include <git2/sys/path.h>
  
  #define GIT_PATH_REJECT_DOT_GIT            (GIT_FS_PATH_REJECT_MAX << 1)
  #define GIT_PATH_REJECT_DOT_GIT_LITERAL    (GIT_FS_PATH_REJECT_MAX << 2)
  #define GIT_PATH_REJECT_DOT_GIT_HFS        (GIT_FS_PATH_REJECT_MAX << 3)
  #define GIT_PATH_REJECT_DOT_GIT_NTFS       (GIT_FS_PATH_REJECT_MAX << 4)
  
  /* Paths that should never be written into the working directory. */
  #define GIT_PATH_REJECT_WORKDIR_DEFAULTS \
  	GIT_FS_PATH_REJECT_FILESYSTEM_DEFAULTS | GIT_PATH_REJECT_DOT_GIT
  
  /* Paths that should never be written to the index. */
  #define GIT_PATH_REJECT_INDEX_DEFAULTS \
  	GIT_FS_PATH_REJECT_TRAVERSAL | GIT_PATH_REJECT_DOT_GIT
  
  extern bool git_path_str_is_valid(
  	git_repository *repo,
  	const git_str *path,
  	uint16_t file_mode,
  	unsigned int flags);
  
  GIT_INLINE(bool) git_path_is_valid(
  	git_repository *repo,
  	const char *path,
  	uint16_t file_mode,
  	unsigned int flags)
  {
  	git_str str = GIT_STR_INIT_CONST(path, SIZE_MAX);
  	return git_path_str_is_valid(repo, &str, file_mode, flags);
  }
  
  GIT_INLINE(int) git_path_validate_str_length(
  	git_repository *repo,
  	const git_str *path)
  {
  	if (!git_path_str_is_valid(repo, path, 0, GIT_FS_PATH_REJECT_LONG_PATHS)) {
  		if (path->size == SIZE_MAX)
  			git_error_set(GIT_ERROR_FILESYSTEM, "path too long: '%s'", path->ptr);
  		else
  			git_error_set(GIT_ERROR_FILESYSTEM, "path too long: '%.*s'", (int)path->size, path->ptr);
  
  		return -1;
  	}
  
  	return 0;
  }
  
  GIT_INLINE(int) git_path_validate_length(
  	git_repository *repo,
  	const char *path)
  {
  	git_str str = GIT_STR_INIT_CONST(path, SIZE_MAX);
  	return git_path_validate_str_length(repo, &str);
  }
  
  #endif
  

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