1 /*-
2 * Copyright (c) 2003-2007 Tim Kientzle
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "archive_platform.h"
27 __FBSDID("$FreeBSD: head/lib/libarchive/archive_write_open_filename.c 191165 2009-04-17 00:39:35Z kientzle $");
28
29 #ifdef HAVE_SYS_STAT_H
30 #include <sys/stat.h>
31 #endif
32 #ifdef HAVE_ERRNO_H
33 #include <errno.h>
34 #endif
35 #ifdef HAVE_FCNTL_H
36 #include <fcntl.h>
37 #endif
38 #ifdef HAVE_STDLIB_H
39 #include <stdlib.h>
40 #endif
41 #ifdef HAVE_STRING_H
42 #include <string.h>
43 #endif
44 #ifdef HAVE_UNISTD_H
45 #include <unistd.h>
46 #endif
47
48 #include "archive.h"
49 #include "archive_private.h"
50 #include "archive_string.h"
51
52 #ifndef O_BINARY
53 #define O_BINARY 0
54 #endif
55 #ifndef O_CLOEXEC
56 #define O_CLOEXEC 0
57 #endif
58
59 struct write_file_data {
60 int fd;
61 struct archive_mstring filename;
62 };
63
64 static int file_close(struct archive *, void *);
65 static int file_free(struct archive *, void *);
66 static int file_open(struct archive *, void *);
67 static ssize_t file_write(struct archive *, void *, const void *buff, size_t);
68 static int open_filename(struct archive *, int, const void *);
69
70 int
archive_write_open_file(struct archive * a,const char * filename)71 archive_write_open_file(struct archive *a, const char *filename)
72 {
73 return (archive_write_open_filename(a, filename));
74 }
75
76 int
archive_write_open_filename(struct archive * a,const char * filename)77 archive_write_open_filename(struct archive *a, const char *filename)
78 {
79
80 if (filename == NULL || filename[0] == '\0')
81 return (archive_write_open_fd(a, 1));
82
83 return (open_filename(a, 1, filename));
84 }
85
86 int
archive_write_open_filename_w(struct archive * a,const wchar_t * filename)87 archive_write_open_filename_w(struct archive *a, const wchar_t *filename)
88 {
89
90 if (filename == NULL || filename[0] == L'\0')
91 return (archive_write_open_fd(a, 1));
92
93 return (open_filename(a, 0, filename));
94 }
95
96 static int
open_filename(struct archive * a,int mbs_fn,const void * filename)97 open_filename(struct archive *a, int mbs_fn, const void *filename)
98 {
99 struct write_file_data *mine;
100 int r;
101
102 mine = (struct write_file_data *)calloc(1, sizeof(*mine));
103 if (mine == NULL) {
104 archive_set_error(a, ENOMEM, "No memory");
105 return (ARCHIVE_FATAL);
106 }
107 if (mbs_fn)
108 r = archive_mstring_copy_mbs(&mine->filename, filename);
109 else
110 r = archive_mstring_copy_wcs(&mine->filename, filename);
111 if (r < 0) {
112 if (errno == ENOMEM) {
113 archive_set_error(a, ENOMEM, "No memory");
114 return (ARCHIVE_FATAL);
115 }
116 if (mbs_fn)
117 archive_set_error(a, ARCHIVE_ERRNO_MISC,
118 "Can't convert '%s' to WCS",
119 (const char *)filename);
120 else
121 archive_set_error(a, ARCHIVE_ERRNO_MISC,
122 "Can't convert '%S' to MBS",
123 (const wchar_t *)filename);
124 return (ARCHIVE_FAILED);
125 }
126 mine->fd = -1;
127 return (archive_write_open2(a, mine,
128 file_open, file_write, file_close, file_free));
129 }
130
131 static int
file_open(struct archive * a,void * client_data)132 file_open(struct archive *a, void *client_data)
133 {
134 int flags;
135 struct write_file_data *mine;
136 struct stat st;
137 #if defined(_WIN32) && !defined(__CYGWIN__)
138 wchar_t *fullpath;
139 #endif
140 const wchar_t *wcs;
141 const char *mbs;
142
143 mine = (struct write_file_data *)client_data;
144 flags = O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_CLOEXEC;
145
146 /*
147 * Open the file.
148 */
149 mbs = NULL; wcs = NULL;
150 #if defined(_WIN32) && !defined(__CYGWIN__)
151 if (archive_mstring_get_wcs(a, &mine->filename, &wcs) != 0) {
152 if (errno == ENOMEM)
153 archive_set_error(a, errno, "No memory");
154 else {
155 archive_mstring_get_mbs(a, &mine->filename, &mbs);
156 archive_set_error(a, errno,
157 "Can't convert '%s' to WCS", mbs);
158 }
159 return (ARCHIVE_FATAL);
160 }
161 fullpath = __la_win_permissive_name_w(wcs);
162 if (fullpath != NULL) {
163 mine->fd = _wopen(fullpath, flags, 0666);
164 free(fullpath);
165 } else
166 mine->fd = _wopen(wcs, flags, 0666);
167 #else
168 if (archive_mstring_get_mbs(a, &mine->filename, &mbs) != 0) {
169 if (errno == ENOMEM)
170 archive_set_error(a, errno, "No memory");
171 else {
172 archive_mstring_get_wcs(a, &mine->filename, &wcs);
173 archive_set_error(a, errno,
174 "Can't convert '%S' to MBS", wcs);
175 }
176 return (ARCHIVE_FATAL);
177 }
178 mine->fd = open(mbs, flags, 0666);
179 __archive_ensure_cloexec_flag(mine->fd);
180 #endif
181 if (mine->fd < 0) {
182 if (mbs != NULL)
183 archive_set_error(a, errno, "Failed to open '%s'", mbs);
184 else
185 archive_set_error(a, errno, "Failed to open '%S'", wcs);
186 return (ARCHIVE_FATAL);
187 }
188
189 if (fstat(mine->fd, &st) != 0) {
190 if (mbs != NULL)
191 archive_set_error(a, errno, "Couldn't stat '%s'", mbs);
192 else
193 archive_set_error(a, errno, "Couldn't stat '%S'", wcs);
194 return (ARCHIVE_FATAL);
195 }
196
197 /*
198 * Set up default last block handling.
199 */
200 if (archive_write_get_bytes_in_last_block(a) < 0) {
201 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) ||
202 S_ISFIFO(st.st_mode))
203 /* Pad last block when writing to device or FIFO. */
204 archive_write_set_bytes_in_last_block(a, 0);
205 else
206 /* Don't pad last block otherwise. */
207 archive_write_set_bytes_in_last_block(a, 1);
208 }
209
210 /*
211 * If the output file is a regular file, don't add it to
212 * itself. If it's a device file, it's okay to add the device
213 * entry to the output archive.
214 */
215 if (S_ISREG(st.st_mode))
216 archive_write_set_skip_file(a, st.st_dev, st.st_ino);
217
218 return (ARCHIVE_OK);
219 }
220
221 static ssize_t
file_write(struct archive * a,void * client_data,const void * buff,size_t length)222 file_write(struct archive *a, void *client_data, const void *buff,
223 size_t length)
224 {
225 struct write_file_data *mine;
226 ssize_t bytesWritten;
227
228 mine = (struct write_file_data *)client_data;
229 for (;;) {
230 bytesWritten = write(mine->fd, buff, length);
231 if (bytesWritten <= 0) {
232 if (errno == EINTR)
233 continue;
234 archive_set_error(a, errno, "Write error");
235 return (-1);
236 }
237 return (bytesWritten);
238 }
239 }
240
241 static int
file_close(struct archive * a,void * client_data)242 file_close(struct archive *a, void *client_data)
243 {
244 struct write_file_data *mine = (struct write_file_data *)client_data;
245
246 (void)a; /* UNUSED */
247
248 if (mine == NULL)
249 return (ARCHIVE_FATAL);
250
251 if (mine->fd >= 0)
252 close(mine->fd);
253
254 return (ARCHIVE_OK);
255 }
256
257 static int
file_free(struct archive * a,void * client_data)258 file_free(struct archive *a, void *client_data)
259 {
260 struct write_file_data *mine = (struct write_file_data *)client_data;
261
262 (void)a; /* UNUSED */
263
264 if (mine == NULL)
265 return (ARCHIVE_OK);
266
267 archive_mstring_clean(&mine->filename);
268 free(mine);
269 return (ARCHIVE_OK);
270 }
271