chromium/third_party/libzip/src/lib/zip_dirent.c

/*
  zip_dirent.c -- read directory entry (local or central), clean dirent
  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner

  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <[email protected]>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met:
  1. Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
  3. The names of the authors may not be used to endorse or promote
     products derived from this software without specific prior
     written permission.

  THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <time.h>

#include "zipint.h"

static zip_string_t *_zip_dirent_process_ef_utf_8(const zip_dirent_t *de, zip_uint16_t id, zip_string_t *str);
static zip_extra_field_t *_zip_ef_utf8(zip_uint16_t, zip_string_t *, zip_error_t *);
static bool _zip_dirent_process_winzip_aes(zip_dirent_t *de, zip_error_t *error);


void
_zip_cdir_free(zip_cdir_t *cd) { … }


zip_cdir_t *
_zip_cdir_new(zip_uint64_t nentry, zip_error_t *error) { … }


bool
_zip_cdir_grow(zip_cdir_t *cd, zip_uint64_t additional_entries, zip_error_t *error) { … }


zip_int64_t
_zip_cdir_write(zip_t *za, const zip_filelist_t *filelist, zip_uint64_t survivors) { … }


zip_dirent_t *
_zip_dirent_clone(const zip_dirent_t *sde) { … }


void
_zip_dirent_finalize(zip_dirent_t *zde) { … }


void
_zip_dirent_free(zip_dirent_t *zde) { … }


void
_zip_dirent_init(zip_dirent_t *de) { … }


bool
_zip_dirent_needs_zip64(const zip_dirent_t *de, zip_flags_t flags) { … }


zip_dirent_t *
_zip_dirent_new(void) { … }


/* _zip_dirent_read(zde, fp, bufp, left, localp, error):
   Fills the zip directory entry zde.

   If buffer is non-NULL, data is taken from there; otherwise data is read from fp as needed.

   If local is true, it reads a local header instead of a central directory entry.

   Returns size of dirent read if successful. On error, error is filled in and -1 is returned.
*/

zip_int64_t
_zip_dirent_read(zip_dirent_t *zde, zip_source_t *src, zip_buffer_t *buffer, bool local, zip_error_t *error) { … }


static zip_string_t *
_zip_dirent_process_ef_utf_8(const zip_dirent_t *de, zip_uint16_t id, zip_string_t *str) { … }


static bool
_zip_dirent_process_winzip_aes(zip_dirent_t *de, zip_error_t *error) { … }


zip_int32_t
_zip_dirent_size(zip_source_t *src, zip_uint16_t flags, zip_error_t *error) { … }


/* _zip_dirent_write
   Writes zip directory entry.

   If flags & ZIP_EF_LOCAL, it writes a local header instead of a central
   directory entry.  If flags & ZIP_EF_FORCE_ZIP64, a ZIP64 extra field is written, even if not needed.

   Returns 0 if successful, 1 if successful and wrote ZIP64 extra field. On error, error is filled in and -1 is
   returned.
*/

int
_zip_dirent_write(zip_t *za, zip_dirent_t *de, zip_flags_t flags) { … }


time_t
_zip_d2u_time(zip_uint16_t dtime, zip_uint16_t ddate) { … }


static zip_extra_field_t *
_zip_ef_utf8(zip_uint16_t id, zip_string_t *str, zip_error_t *error) { … }


zip_dirent_t *
_zip_get_dirent(zip_t *za, zip_uint64_t idx, zip_flags_t flags, zip_error_t *error) { … }


void
_zip_u2d_time(time_t intime, zip_uint16_t *dtime, zip_uint16_t *ddate) { … }


void
_zip_dirent_apply_attributes(zip_dirent_t *de, zip_file_attributes_t *attributes, bool force_zip64, zip_uint32_t changed) { … }