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 71 archive_write_open_file(struct archive *a, const char *filename) 72 { 73 return (archive_write_open_filename(a, filename)); 74 } 75 76 int 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 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 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 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 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 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 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