mirror of
https://github.com/zlib-ng/minizip-ng
synced 2026-08-25 14:26:08 -04:00
6b9defc73c
mz_os_get_file_attribs used lstat on POSIX and GetFileAttributesW on Win32, both of which return the link's own attributes rather than the target's. Callers that wanted to follow a symlink had no way to ask for that, so mz_zip_writer_add_file produced followed entries tagged ISLNK and readers that tried to recreate them as symlinks. Flip mz_os_get_file_attribs to stat on POSIX and to a CreateFile + GetFileInformationByHandle path on Win32 when the entry is a reparse point. Add mz_os_get_link_attribs preserving the original lstat / GetFileAttributesW semantics. Update mz_zip_writer_add_file to pick the right getter for each branch and to skip symlinks cleanly when neither store_links nor follow_links is set. Refs #797.
198 lines
6.1 KiB
C
198 lines
6.1 KiB
C
/* mz_os.h -- System functions
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part of the minizip-ng project
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Copyright (C) Nathan Moinvaziri
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https://github.com/zlib-ng/minizip-ng
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This program is distributed under the terms of the same license as zlib.
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See the accompanying LICENSE file for the full text of the license.
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*/
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#ifndef MZ_OS_H
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#define MZ_OS_H
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/***************************************************************************/
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#if defined(__APPLE__)
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# define MZ_VERSION_MADEBY_HOST_SYSTEM (MZ_HOST_SYSTEM_OSX_DARWIN)
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#elif defined(__riscos__)
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# define MZ_VERSION_MADEBY_HOST_SYSTEM (MZ_HOST_SYSTEM_RISCOS)
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#elif defined(_WIN32)
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# define MZ_VERSION_MADEBY_HOST_SYSTEM (MZ_HOST_SYSTEM_WINDOWS_NTFS)
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#else
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# define MZ_VERSION_MADEBY_HOST_SYSTEM (MZ_HOST_SYSTEM_UNIX)
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#endif
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#if defined(HAVE_LZMA) || defined(HAVE_LIBCOMP) || defined(HAVE_PPMD)
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# define MZ_VERSION_MADEBY_ZIP_VERSION (63)
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#elif defined(HAVE_WZAES)
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# define MZ_VERSION_MADEBY_ZIP_VERSION (51)
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#elif defined(HAVE_BZIP2)
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# define MZ_VERSION_MADEBY_ZIP_VERSION (46)
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#else
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# define MZ_VERSION_MADEBY_ZIP_VERSION (45)
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#endif
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#define MZ_VERSION_MADEBY ((MZ_VERSION_MADEBY_HOST_SYSTEM << 8) | (MZ_VERSION_MADEBY_ZIP_VERSION))
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#define MZ_PATH_SLASH_UNIX ('/')
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#define MZ_PATH_SLASH_WINDOWS ('\\')
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#if defined(_WIN32)
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# define MZ_PATH_SLASH_PLATFORM (MZ_PATH_SLASH_WINDOWS)
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#else
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# define MZ_PATH_SLASH_PLATFORM (MZ_PATH_SLASH_UNIX)
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#endif
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/***************************************************************************/
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#include "mz_config.h"
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#if HAVE_DIRENT_H
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# include <dirent.h>
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#elif HAVE_SYS_DIRENT_H
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# include <sys/dirent.h>
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#else
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struct dirent {
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char d_name[256];
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};
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#endif
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#if !HAVE_PDIR
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typedef struct DIR DIR;
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#endif
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/***************************************************************************/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***************************************************************************/
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/* Shared functions */
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int32_t mz_path_combine(char *path, const char *join, int32_t max_path);
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/* Combines two paths */
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int32_t mz_path_append_slash(char *path, int32_t max_path, char slash);
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/* Appends a path slash on to the end of the path */
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int32_t mz_path_remove_slash(char *path);
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/* Removes a path slash from the end of the path */
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int32_t mz_path_has_slash(const char *path);
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/* Returns whether or not the path ends with slash */
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int32_t mz_path_convert_slashes(char *path, char slash);
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/* Converts the slashes in a path */
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int32_t mz_path_compare_wc(const char *path, const char *wildcard, uint8_t ignore_case);
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/* Compare two paths with wildcard */
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int32_t mz_path_resolve(const char *path, char *target, int32_t max_target);
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/* Resolves path */
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int32_t mz_path_remove_filename(char *path);
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/* Remove the filename from a path */
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int32_t mz_path_remove_extension(char *path);
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/* Remove the extension from a path */
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int32_t mz_path_get_filename(const char *path, const char **filename);
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/* Get the filename from a path */
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int32_t mz_dir_has_unsafe_symlink(const char *path, const char *base_path);
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/* Checks if any existing component of path is a symlink that escapes base path. */
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int32_t mz_dir_make(const char *path);
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/* Creates a directory recursively */
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int32_t mz_file_get_crc(const char *path, uint32_t *result_crc);
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/* Gets the crc32 hash of a file */
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/***************************************************************************/
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/* Platform specific functions */
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wchar_t *mz_os_unicode_string_create(const char *string, int32_t encoding);
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/* Create unicode string from a utf8 string */
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void mz_os_unicode_string_delete(wchar_t **string);
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/* Delete a unicode string that was created */
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char *mz_os_utf8_string_create(const char *string, int32_t encoding);
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/* Create a utf8 string from a string with another encoding */
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void mz_os_utf8_string_delete(char **string);
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/* Delete a utf8 string that was created */
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int32_t mz_os_rand(uint8_t *buf, int32_t size);
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/* Random number generator (not cryptographically secure) */
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int32_t mz_os_rename(const char *source_path, const char *target_path);
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/* Rename a file */
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int32_t mz_os_unlink(const char *path);
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/* Delete an existing file */
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int32_t mz_os_file_exists(const char *path);
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/* Check to see if a file exists */
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int64_t mz_os_get_file_size(const char *path);
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/* Gets the length of a file */
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int32_t mz_os_get_file_date(const char *path, time_t *modified_date, time_t *accessed_date, time_t *creation_date);
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/* Gets a file's modified, access, and creation dates if supported */
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int32_t mz_os_set_file_date(const char *path, time_t modified_date, time_t accessed_date, time_t creation_date);
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/* Sets a file's modified, access, and creation dates if supported */
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int32_t mz_os_get_file_attribs(const char *path, uint32_t *attributes);
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/* Gets a file's attributes, following symbolic links */
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int32_t mz_os_set_file_attribs(const char *path, uint32_t attributes);
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/* Sets a file's attributes */
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int32_t mz_os_get_temp_path(char *path, int32_t max_path, const char *prefix);
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/* Gets a unique temporary file path */
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int32_t mz_os_path_same_fs(const char *path_a, const char *path_b);
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/* Checks if both paths are on the same filesystem */
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int32_t mz_os_make_dir(const char *path);
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/* Recursively creates a directory */
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DIR *mz_os_open_dir(const char *path);
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/* Opens a directory for listing */
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struct dirent *mz_os_read_dir(DIR *dir);
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/* Reads a directory listing entry */
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int32_t mz_os_close_dir(DIR *dir);
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/* Closes a directory that has been opened for listing */
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int32_t mz_os_is_dir_separator(char c);
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/* Checks to see if character is a directory separator */
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int32_t mz_os_is_dir(const char *path);
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/* Checks to see if path is a directory */
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int32_t mz_os_is_symlink(const char *path);
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/* Checks to see if path is a symbolic link */
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int32_t mz_os_get_link_attribs(const char *path, uint32_t *attributes);
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/* Gets a symbolic link's attributes */
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int32_t mz_os_make_symlink(const char *path, const char *target_path);
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/* Creates a symbolic link pointing to a target */
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int32_t mz_os_read_symlink(const char *path, char *target_path, int32_t max_target_path);
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/* Gets the target path for a symbolic link */
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uint64_t mz_os_ms_time(void);
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/* Gets the time in milliseconds */
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/***************************************************************************/
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#ifdef __cplusplus
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}
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#endif
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#endif
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