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_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 70 archive_write_open_file(struct archive *a, const char *filename) 71 { 72 return (archive_write_open_filename(a, filename)); 73 } 74 75 int 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 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 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 = (struct write_file_data *)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_open(a, mine, 127 file_open, file_write, file_close)); 128 } 129 130 static int 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 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 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 close(mine->fd); 247 archive_mstring_clean(&mine->filename); 248 free(mine); 249 return (ARCHIVE_OK); 250 } 251