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
28 #ifdef HAVE_SYS_STAT_H
29 #include <sys/stat.h>
30 #endif
31 #ifdef HAVE_ERRNO_H
32 #include <errno.h>
33 #endif
34 #ifdef HAVE_FCNTL_H
35 #include <fcntl.h>
36 #endif
37 #ifdef HAVE_STDLIB_H
38 #include <stdlib.h>
39 #endif
40 #ifdef HAVE_STRING_H
41 #include <string.h>
42 #endif
43 #ifdef HAVE_UNISTD_H
44 #include <unistd.h>
45 #endif
46
47 #include "archive.h"
48 #include "archive_private.h"
49 #include "archive_string.h"
50
51 #ifndef O_BINARY
52 #define O_BINARY 0
53 #endif
54 #ifndef O_CLOEXEC
55 #define O_CLOEXEC 0
56 #endif
57
58 struct write_file_data {
59 int fd;
60 struct archive_mstring filename;
61 };
62
63 static int file_close(struct archive *, void *);
64 static int file_free(struct archive *, void *);
65 static int file_open(struct archive *, void *);
66 static ssize_t file_write(struct archive *, void *, const void *buff, size_t);
67 static int open_filename(struct archive *, int, const void *);
68
69 int
archive_write_open_file(struct archive * a,const char * filename)70 archive_write_open_file(struct archive *a, const char *filename)
71 {
72 return (archive_write_open_filename(a, filename));
73 }
74
75 int
archive_write_open_filename(struct archive * a,const char * filename)76 archive_write_open_filename(struct archive *a, const char *filename)
77 {
78
79 if (filename == NULL || filename[0] == '\0')
80 return (archive_write_open_fd(a, 1));
81
82 return (open_filename(a, 1, filename));
83 }
84
85 int
archive_write_open_filename_w(struct archive * a,const wchar_t * filename)86 archive_write_open_filename_w(struct archive *a, const wchar_t *filename)
87 {
88
89 if (filename == NULL || filename[0] == L'\0')
90 return (archive_write_open_fd(a, 1));
91
92 return (open_filename(a, 0, filename));
93 }
94
95 static int
open_filename(struct archive * a,int mbs_fn,const void * filename)96 open_filename(struct archive *a, int mbs_fn, const void *filename)
97 {
98 struct write_file_data *mine;
99 int r;
100
101 mine = calloc(1, sizeof(*mine));
102 if (mine == NULL) {
103 archive_set_error(a, ENOMEM, "No memory");
104 return (ARCHIVE_FATAL);
105 }
106 if (mbs_fn)
107 r = archive_mstring_copy_mbs(&mine->filename, filename);
108 else
109 r = archive_mstring_copy_wcs(&mine->filename, filename);
110 if (r < 0) {
111 free(mine);
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 '%ls' 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 '%ls' 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 '%ls'", 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 '%ls'", wcs);
194 close(mine->fd);
195 mine->fd = -1;
196 return (ARCHIVE_FATAL);
197 }
198
199 /*
200 * Set up default last block handling.
201 */
202 if (archive_write_get_bytes_in_last_block(a) < 0) {
203 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) ||
204 S_ISFIFO(st.st_mode))
205 /* Pad last block when writing to device or FIFO. */
206 archive_write_set_bytes_in_last_block(a, 0);
207 else
208 /* Don't pad last block otherwise. */
209 archive_write_set_bytes_in_last_block(a, 1);
210 }
211
212 /*
213 * If the output file is a regular file, don't add it to
214 * itself. If it's a device file, it's okay to add the device
215 * entry to the output archive.
216 */
217 if (S_ISREG(st.st_mode))
218 archive_write_set_skip_file(a, st.st_dev, st.st_ino);
219
220 return (ARCHIVE_OK);
221 }
222
223 static ssize_t
file_write(struct archive * a,void * client_data,const void * buff,size_t length)224 file_write(struct archive *a, void *client_data, const void *buff,
225 size_t length)
226 {
227 struct write_file_data *mine;
228 ssize_t bytesWritten;
229
230 mine = (struct write_file_data *)client_data;
231 for (;;) {
232 bytesWritten = write(mine->fd, buff, length);
233 if (bytesWritten < 0) {
234 if (errno == EINTR)
235 continue;
236 archive_set_error(a, errno, "Write error");
237 return (-1);
238 }
239 return (bytesWritten);
240 }
241 }
242
243 static int
file_close(struct archive * a,void * client_data)244 file_close(struct archive *a, void *client_data)
245 {
246 struct write_file_data *mine = (struct write_file_data *)client_data;
247
248 (void)a; /* UNUSED */
249
250 if (mine == NULL)
251 return (ARCHIVE_FATAL);
252
253 if (mine->fd >= 0)
254 close(mine->fd);
255
256 return (ARCHIVE_OK);
257 }
258
259 static int
file_free(struct archive * a,void * client_data)260 file_free(struct archive *a, void *client_data)
261 {
262 struct write_file_data *mine = (struct write_file_data *)client_data;
263
264 (void)a; /* UNUSED */
265
266 if (mine == NULL)
267 return (ARCHIVE_OK);
268
269 archive_mstring_clean(&mine->filename);
270 free(mine);
271 return (ARCHIVE_OK);
272 }
273