249 lines
6.5 KiB
C
249 lines
6.5 KiB
C
/*-
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* Copyright (c) 2003-2007 Tim Kientzle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "archive_platform.h"
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__FBSDID("$FreeBSD: head/lib/libarchive/archive_write_open_filename.c 191165 2009-04-17 00:39:35Z kientzle $");
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "archive.h"
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#include "archive_string.h"
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#ifndef O_BINARY
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#define O_BINARY 0
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#endif
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struct write_file_data {
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int fd;
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char mbs_filename;
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union {
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char m[1];
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wchar_t w[1];
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} filename; /* Must be last! */
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};
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static int file_close(struct archive *, void *);
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static int file_open(struct archive *, void *);
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static ssize_t file_write(struct archive *, void *, const void *buff, size_t);
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int
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archive_write_open_file(struct archive *a, const char *filename)
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{
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return (archive_write_open_filename(a, filename));
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}
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int
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archive_write_open_filename(struct archive *a, const char *filename)
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{
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struct write_file_data *mine;
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if (filename == NULL || filename[0] == '\0')
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return (archive_write_open_fd(a, 1));
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mine = (struct write_file_data *)malloc(sizeof(*mine) + strlen(filename));
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if (mine == NULL) {
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archive_set_error(a, ENOMEM, "No memory");
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return (ARCHIVE_FATAL);
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}
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strcpy(mine->filename.m, filename);
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mine->mbs_filename = 1;
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mine->fd = -1;
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return (archive_write_open(a, mine,
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file_open, file_write, file_close));
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}
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int
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archive_write_open_filename_w(struct archive *a, const wchar_t *filename)
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{
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#if defined(_WIN32) && !defined(__CYGWIN__)
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struct write_file_data *mine;
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if (filename == NULL || filename[0] == L'\0')
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return (archive_write_open_fd(a, 1));
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mine = malloc(sizeof(*mine) + wcslen(filename) * sizeof(wchar_t));
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if (mine == NULL) {
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archive_set_error(a, ENOMEM, "No memory");
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return (ARCHIVE_FATAL);
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}
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wcscpy(mine->filename.w, filename);
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mine->mbs_filename = 0;
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mine->fd = -1;
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return (archive_write_open(a, mine,
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file_open, file_write, file_close));
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#else
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/*
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* POSIX system does not support a wchar_t interface for
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* open() system call, so we have to translate a wchar_t
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* filename to multi-byte one and use it.
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*/
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struct archive_string fn;
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int r;
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if (filename == NULL || filename[0] == L'\0')
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return (archive_write_open_fd(a, 1));
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archive_string_init(&fn);
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if (archive_string_append_from_wcs(&fn, filename,
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wcslen(filename)) != 0) {
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archive_set_error(a, EINVAL,
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"Failed to convert a wide-character filename to"
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" a multi-byte filename");
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archive_string_free(&fn);
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return (ARCHIVE_FATAL);
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}
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r = archive_write_open_filename(a, fn.s);
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archive_string_free(&fn);
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return (r);
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#endif
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}
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static int
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file_open(struct archive *a, void *client_data)
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{
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int flags;
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struct write_file_data *mine;
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struct stat st;
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mine = (struct write_file_data *)client_data;
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flags = O_WRONLY | O_CREAT | O_TRUNC | O_BINARY;
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/*
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* Open the file.
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*/
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if (mine->mbs_filename) {
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mine->fd = open(mine->filename.m, flags, 0666);
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if (mine->fd < 0) {
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archive_set_error(a, errno, "Failed to open '%s'",
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mine->filename.m);
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return (ARCHIVE_FATAL);
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}
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if (fstat(mine->fd, &st) != 0) {
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archive_set_error(a, errno, "Couldn't stat '%s'",
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mine->filename.m);
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return (ARCHIVE_FATAL);
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}
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} else {
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#if defined(_WIN32) && !defined(__CYGWIN__)
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mine->fd = _wopen(mine->filename.w, flags, 0666);
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if (mine->fd < 0 && errno == ENOENT) {
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wchar_t *fullpath;
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fullpath = __la_win_permissive_name_w(mine->filename.w);
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if (fullpath != NULL) {
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mine->fd = _wopen(fullpath, flags, 0666);
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free(fullpath);
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}
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}
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if (mine->fd < 0) {
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archive_set_error(a, errno, "Failed to open '%S'",
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mine->filename.w);
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return (ARCHIVE_FATAL);
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}
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if (fstat(mine->fd, &st) != 0) {
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archive_set_error(a, errno, "Couldn't stat '%S'",
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mine->filename.w);
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return (ARCHIVE_FATAL);
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}
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#else
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archive_set_error(a, ARCHIVE_ERRNO_MISC,
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"Unexpedted operation in archive_write_open_filename");
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return (ARCHIVE_FATAL);
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#endif
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}
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/*
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* Set up default last block handling.
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*/
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if (archive_write_get_bytes_in_last_block(a) < 0) {
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if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) ||
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S_ISFIFO(st.st_mode))
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/* Pad last block when writing to device or FIFO. */
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archive_write_set_bytes_in_last_block(a, 0);
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else
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/* Don't pad last block otherwise. */
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archive_write_set_bytes_in_last_block(a, 1);
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}
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/*
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* If the output file is a regular file, don't add it to
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* itself. If it's a device file, it's okay to add the device
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* entry to the output archive.
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*/
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if (S_ISREG(st.st_mode))
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archive_write_set_skip_file(a, st.st_dev, st.st_ino);
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return (ARCHIVE_OK);
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}
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static ssize_t
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file_write(struct archive *a, void *client_data, const void *buff, size_t length)
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{
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struct write_file_data *mine;
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ssize_t bytesWritten;
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mine = (struct write_file_data *)client_data;
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for (;;) {
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bytesWritten = write(mine->fd, buff, length);
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if (bytesWritten <= 0) {
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if (errno == EINTR)
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continue;
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archive_set_error(a, errno, "Write error");
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return (-1);
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}
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return (bytesWritten);
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}
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}
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static int
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file_close(struct archive *a, void *client_data)
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{
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struct write_file_data *mine = (struct write_file_data *)client_data;
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(void)a; /* UNUSED */
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close(mine->fd);
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free(mine);
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return (ARCHIVE_OK);
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}
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