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 if (errno == ENOMEM) {
112 archive_set_error(a, ENOMEM, "No memory");
113 return (ARCHIVE_FATAL);
114 }
115 if (mbs_fn)
116 archive_set_error(a, ARCHIVE_ERRNO_MISC,
117 "Can't convert '%s' to WCS",
118 (const char *)filename);
119 else
120 archive_set_error(a, ARCHIVE_ERRNO_MISC,
121 "Can't convert '%S' to MBS",
122 (const wchar_t *)filename);
123 return (ARCHIVE_FAILED);
124 }
125 mine->fd = -1;
126 return (archive_write_open2(a, mine,
127 file_open, file_write, file_close, file_free));
128 }
129
130 static int
file_open(struct archive * a,void * client_data)131 file_open(struct archive *a, void *client_data)
132 {
133 int flags;
134 struct write_file_data *mine;
135 struct stat st;
136 #if defined(_WIN32) && !defined(__CYGWIN__)
137 wchar_t *fullpath;
138 #endif
139 const wchar_t *wcs;
140 const char *mbs;
141
142 mine = (struct write_file_data *)client_data;
143 flags = O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_CLOEXEC;
144
145 /*
146 * Open the file.
147 */
148 mbs = NULL; wcs = NULL;
149 #if defined(_WIN32) && !defined(__CYGWIN__)
150 if (archive_mstring_get_wcs(a, &mine->filename, &wcs) != 0) {
151 if (errno == ENOMEM)
152 archive_set_error(a, errno, "No memory");
153 else {
154 archive_mstring_get_mbs(a, &mine->filename, &mbs);
155 archive_set_error(a, errno,
156 "Can't convert '%s' to WCS", mbs);
157 }
158 return (ARCHIVE_FATAL);
159 }
160 fullpath = __la_win_permissive_name_w(wcs);
161 if (fullpath != NULL) {
162 mine->fd = _wopen(fullpath, flags, 0666);
163 free(fullpath);
164 } else
165 mine->fd = _wopen(wcs, flags, 0666);
166 #else
167 if (archive_mstring_get_mbs(a, &mine->filename, &mbs) != 0) {
168 if (errno == ENOMEM)
169 archive_set_error(a, errno, "No memory");
170 else {
171 archive_mstring_get_wcs(a, &mine->filename, &wcs);
172 archive_set_error(a, errno,
173 "Can't convert '%S' to MBS", wcs);
174 }
175 return (ARCHIVE_FATAL);
176 }
177 mine->fd = open(mbs, flags, 0666);
178 __archive_ensure_cloexec_flag(mine->fd);
179 #endif
180 if (mine->fd < 0) {
181 if (mbs != NULL)
182 archive_set_error(a, errno, "Failed to open '%s'", mbs);
183 else
184 archive_set_error(a, errno, "Failed to open '%S'", wcs);
185 return (ARCHIVE_FATAL);
186 }
187
188 if (fstat(mine->fd, &st) != 0) {
189 if (mbs != NULL)
190 archive_set_error(a, errno, "Couldn't stat '%s'", mbs);
191 else
192 archive_set_error(a, errno, "Couldn't stat '%S'", wcs);
193 return (ARCHIVE_FATAL);
194 }
195
196 /*
197 * Set up default last block handling.
198 */
199 if (archive_write_get_bytes_in_last_block(a) < 0) {
200 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) ||
201 S_ISFIFO(st.st_mode))
202 /* Pad last block when writing to device or FIFO. */
203 archive_write_set_bytes_in_last_block(a, 0);
204 else
205 /* Don't pad last block otherwise. */
206 archive_write_set_bytes_in_last_block(a, 1);
207 }
208
209 /*
210 * If the output file is a regular file, don't add it to
211 * itself. If it's a device file, it's okay to add the device
212 * entry to the output archive.
213 */
214 if (S_ISREG(st.st_mode))
215 archive_write_set_skip_file(a, st.st_dev, st.st_ino);
216
217 return (ARCHIVE_OK);
218 }
219
220 static ssize_t
file_write(struct archive * a,void * client_data,const void * buff,size_t length)221 file_write(struct archive *a, void *client_data, const void *buff,
222 size_t length)
223 {
224 struct write_file_data *mine;
225 ssize_t bytesWritten;
226
227 mine = (struct write_file_data *)client_data;
228 for (;;) {
229 bytesWritten = write(mine->fd, buff, length);
230 if (bytesWritten <= 0) {
231 if (errno == EINTR)
232 continue;
233 archive_set_error(a, errno, "Write error");
234 return (-1);
235 }
236 return (bytesWritten);
237 }
238 }
239
240 static int
file_close(struct archive * a,void * client_data)241 file_close(struct archive *a, void *client_data)
242 {
243 struct write_file_data *mine = (struct write_file_data *)client_data;
244
245 (void)a; /* UNUSED */
246
247 if (mine == NULL)
248 return (ARCHIVE_FATAL);
249
250 if (mine->fd >= 0)
251 close(mine->fd);
252
253 return (ARCHIVE_OK);
254 }
255
256 static int
file_free(struct archive * a,void * client_data)257 file_free(struct archive *a, void *client_data)
258 {
259 struct write_file_data *mine = (struct write_file_data *)client_data;
260
261 (void)a; /* UNUSED */
262
263 if (mine == NULL)
264 return (ARCHIVE_OK);
265
266 archive_mstring_clean(&mine->filename);
267 free(mine);
268 return (ARCHIVE_OK);
269 }
270