Glenn L McGrath | 237ae42 | 2002-11-03 14:05:15 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License as published by |
| 4 | * the Free Software Foundation; either version 2 of the License, or |
| 5 | * (at your option) any later version. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | * You should have received a copy of the GNU General Public License |
| 13 | * along with this program; if not, write to the Free Software |
| 14 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 15 | */ |
| 16 | |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 17 | #include <sys/types.h> |
Glenn L McGrath | 237ae42 | 2002-11-03 14:05:15 +0000 | [diff] [blame] | 18 | |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 19 | #include <errno.h> |
| 20 | #include <fcntl.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <string.h> |
| 23 | #include <utime.h> |
| 24 | #include <unistd.h> |
| 25 | #include <stdlib.h> |
Glenn L McGrath | 237ae42 | 2002-11-03 14:05:15 +0000 | [diff] [blame] | 26 | |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 27 | #include "libbb.h" |
| 28 | #include "unarchive.h" |
| 29 | |
| 30 | extern void data_extract_all(archive_handle_t *archive_handle) |
| 31 | { |
| 32 | file_header_t *file_header = archive_handle->file_header; |
| 33 | int dst_fd; |
| 34 | int res; |
| 35 | |
| 36 | if (archive_handle->flags & ARCHIVE_CREATE_LEADING_DIRS) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 37 | char *name = bb_xstrdup(file_header->name); |
Eric Andersen | 0e020d1 | 2004-10-13 06:25:52 +0000 | [diff] [blame] | 38 | bb_make_directory (dirname(name), -1, FILEUTILS_RECUR); |
Eric Andersen | d9d47c3 | 2002-09-30 20:14:57 +0000 | [diff] [blame] | 39 | free(name); |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 40 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 41 | |
Glenn L McGrath | 4cee66d | 2003-08-28 19:12:23 +0000 | [diff] [blame] | 42 | /* Check if the file already exists */ |
| 43 | if (archive_handle->flags & ARCHIVE_EXTRACT_UNCONDITIONAL) { |
| 44 | /* Remove the existing entry if it exists */ |
Glenn L McGrath | 90c9df9 | 2003-11-20 08:00:38 +0000 | [diff] [blame] | 45 | if (((file_header->mode & S_IFMT) != S_IFDIR) && (unlink(file_header->name) == -1) && (errno != ENOENT)) { |
Glenn L McGrath | 4cee66d | 2003-08-28 19:12:23 +0000 | [diff] [blame] | 46 | bb_perror_msg_and_die("Couldnt remove old file"); |
| 47 | } |
| 48 | } |
| 49 | else if (archive_handle->flags & ARCHIVE_EXTRACT_NEWER) { |
| 50 | /* Remove the existing entry if its older than the extracted entry */ |
| 51 | struct stat statbuf; |
Glenn L McGrath | 8dc8cb1 | 2003-11-15 23:44:31 +0000 | [diff] [blame] | 52 | if (lstat(file_header->name, &statbuf) == -1) { |
| 53 | if (errno != ENOENT) { |
| 54 | bb_perror_msg_and_die("Couldnt stat old file"); |
| 55 | } |
Glenn L McGrath | 4cee66d | 2003-08-28 19:12:23 +0000 | [diff] [blame] | 56 | } |
Glenn L McGrath | 8dc8cb1 | 2003-11-15 23:44:31 +0000 | [diff] [blame] | 57 | else if (statbuf.st_mtime <= file_header->mtime) { |
Glenn L McGrath | 4cee66d | 2003-08-28 19:12:23 +0000 | [diff] [blame] | 58 | if (!(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) { |
| 59 | bb_error_msg("%s not created: newer or same age file exists", file_header->name); |
| 60 | } |
| 61 | data_skip(archive_handle); |
| 62 | return; |
| 63 | } |
Glenn L McGrath | 8dc8cb1 | 2003-11-15 23:44:31 +0000 | [diff] [blame] | 64 | else if ((unlink(file_header->name) == -1) && (errno != EISDIR)) { |
| 65 | bb_perror_msg_and_die("Couldnt remove old file %s", file_header->name); |
Glenn L McGrath | 4cee66d | 2003-08-28 19:12:23 +0000 | [diff] [blame] | 66 | } |
| 67 | } |
| 68 | |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame] | 69 | /* Handle hard links separately |
Glenn L McGrath | e39ee01 | 2003-11-27 00:01:43 +0000 | [diff] [blame] | 70 | * We identified hard links as regular files of size 0 with a symlink */ |
| 71 | if (S_ISREG(file_header->mode) && (file_header->link_name) && (file_header->size == 0)) { |
Glenn L McGrath | 3d5828f | 2003-08-14 02:55:15 +0000 | [diff] [blame] | 72 | /* hard link */ |
| 73 | res = link(file_header->link_name, file_header->name); |
| 74 | if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) { |
| 75 | bb_perror_msg("Couldnt create hard link"); |
| 76 | } |
| 77 | } else { |
| 78 | /* Create the filesystem entry */ |
| 79 | switch(file_header->mode & S_IFMT) { |
| 80 | case S_IFREG: { |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 81 | /* Regular file */ |
Glenn L McGrath | afc01cd | 2003-04-21 11:03:29 +0000 | [diff] [blame] | 82 | dst_fd = bb_xopen(file_header->name, O_WRONLY | O_CREAT | O_EXCL); |
Glenn L McGrath | 7ffe133 | 2003-11-21 22:24:57 +0000 | [diff] [blame] | 83 | bb_copyfd_size(archive_handle->src_fd, dst_fd, file_header->size); |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 84 | close(dst_fd); |
Glenn L McGrath | 3d5828f | 2003-08-14 02:55:15 +0000 | [diff] [blame] | 85 | break; |
| 86 | } |
| 87 | case S_IFDIR: |
Glenn L McGrath | 3d5828f | 2003-08-14 02:55:15 +0000 | [diff] [blame] | 88 | res = mkdir(file_header->name, file_header->mode); |
Glenn L McGrath | 8dc8cb1 | 2003-11-15 23:44:31 +0000 | [diff] [blame] | 89 | if ((errno != EISDIR) && (res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) { |
Glenn L McGrath | 3d5828f | 2003-08-14 02:55:15 +0000 | [diff] [blame] | 90 | bb_perror_msg("extract_archive: %s", file_header->name); |
| 91 | } |
| 92 | break; |
| 93 | case S_IFLNK: |
| 94 | /* Symlink */ |
Glenn L McGrath | 3d5828f | 2003-08-14 02:55:15 +0000 | [diff] [blame] | 95 | res = symlink(file_header->link_name, file_header->name); |
| 96 | if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) { |
| 97 | bb_perror_msg("Cannot create symlink from %s to '%s'", file_header->name, file_header->link_name); |
| 98 | } |
| 99 | break; |
| 100 | case S_IFSOCK: |
| 101 | case S_IFBLK: |
| 102 | case S_IFCHR: |
| 103 | case S_IFIFO: |
Glenn L McGrath | 3d5828f | 2003-08-14 02:55:15 +0000 | [diff] [blame] | 104 | res = mknod(file_header->name, file_header->mode, file_header->device); |
| 105 | if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) { |
| 106 | bb_perror_msg("Cannot create node %s", file_header->name); |
| 107 | } |
| 108 | break; |
| 109 | default: |
| 110 | bb_error_msg_and_die("Unrecognised file type"); |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 111 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 112 | } |
| 113 | |
Rob Landley | f3d6c94 | 2005-10-27 22:49:08 +0000 | [diff] [blame] | 114 | if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_OWN)) { |
| 115 | lchown(file_header->name, file_header->uid, file_header->gid); |
| 116 | } |
| 117 | if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_PERM) && |
| 118 | (file_header->mode & S_IFMT) != S_IFLNK) |
| 119 | { |
Eric Andersen | 67ff3a1 | 2003-12-21 08:59:24 +0000 | [diff] [blame] | 120 | chmod(file_header->name, file_header->mode); |
| 121 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 122 | |
| 123 | if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) { |
| 124 | struct utimbuf t; |
| 125 | t.actime = t.modtime = file_header->mtime; |
| 126 | utime(file_header->name, &t); |
| 127 | } |
| 128 | } |