Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Mini unzip implementation for busybox |
| 4 | * |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 5 | * Copyright (C) 2004 by Ed Clark |
| 6 | * |
| 7 | * Loosely based on original busybox unzip applet by Laurence Anderson. |
| 8 | * All options and features should work in this version. |
Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 9 | * |
Denys Vlasenko | 0ef64bd | 2010-08-16 20:14:46 +0200 | [diff] [blame] | 10 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 11 | */ |
Glenn L McGrath | f34b0e9 | 2004-06-06 10:22:43 +0000 | [diff] [blame] | 12 | /* For reference see |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 13 | * http://www.pkware.com/company/standards/appnote/ |
Glenn L McGrath | f34b0e9 | 2004-06-06 10:22:43 +0000 | [diff] [blame] | 14 | * http://www.info-zip.org/pub/infozip/doc/appnote-iz-latest.zip |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 15 | * |
| 16 | * TODO |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 17 | * Zip64 + other methods |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 18 | */ |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 19 | |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 20 | //config:config UNZIP |
| 21 | //config: bool "unzip" |
| 22 | //config: default y |
| 23 | //config: help |
| 24 | //config: unzip will list or extract files from a ZIP archive, |
| 25 | //config: commonly found on DOS/WIN systems. The default behavior |
| 26 | //config: (with no options) is to extract the archive into the |
| 27 | //config: current directory. Use the `-d' option to extract to a |
| 28 | //config: directory of your choice. |
| 29 | |
| 30 | //applet:IF_UNZIP(APPLET(unzip, BB_DIR_USR_BIN, BB_SUID_DROP)) |
| 31 | //kbuild:lib-$(CONFIG_UNZIP) += unzip.o |
| 32 | |
Pere Orga | 1f4447b | 2011-03-27 22:40:30 +0200 | [diff] [blame] | 33 | //usage:#define unzip_trivial_usage |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 34 | //usage: "[-lnopq] FILE[.zip] [FILE]... [-x FILE...] [-d DIR]" |
Pere Orga | 1f4447b | 2011-03-27 22:40:30 +0200 | [diff] [blame] | 35 | //usage:#define unzip_full_usage "\n\n" |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 36 | //usage: "Extract FILEs from ZIP archive\n" |
| 37 | //usage: "\n -l List contents (with -q for short form)" |
| 38 | //usage: "\n -n Never overwrite files (default: ask)" |
Pere Orga | 1f4447b | 2011-03-27 22:40:30 +0200 | [diff] [blame] | 39 | //usage: "\n -o Overwrite" |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 40 | //usage: "\n -p Print to stdout" |
Pere Orga | 1f4447b | 2011-03-27 22:40:30 +0200 | [diff] [blame] | 41 | //usage: "\n -q Quiet" |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 42 | //usage: "\n -x FILE Exclude FILEs" |
| 43 | //usage: "\n -d DIR Extract into DIR" |
Pere Orga | 1f4447b | 2011-03-27 22:40:30 +0200 | [diff] [blame] | 44 | |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 45 | #include "libbb.h" |
Tanguy Pruvot | 8a6c2c2 | 2012-04-28 00:24:09 +0200 | [diff] [blame] | 46 | #include "bb_archive.h" |
Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 47 | |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 48 | #if defined(ANDROID) || defined(__ANDROID__) |
| 49 | /* Needed to ensure we can extract signed Android OTA packages */ |
| 50 | #undef ENABLE_DESKTOP |
| 51 | #define ENABLE_DESKTOP 1 |
| 52 | #endif |
| 53 | |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 54 | enum { |
| 55 | #if BB_BIG_ENDIAN |
| 56 | ZIP_FILEHEADER_MAGIC = 0x504b0304, |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 57 | ZIP_CDF_MAGIC = 0x504b0102, /* central directory's file header */ |
| 58 | ZIP_CDE_MAGIC = 0x504b0506, /* "end of central directory" record */ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 59 | ZIP_DD_MAGIC = 0x504b0708, |
| 60 | #else |
| 61 | ZIP_FILEHEADER_MAGIC = 0x04034b50, |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 62 | ZIP_CDF_MAGIC = 0x02014b50, |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 63 | ZIP_CDE_MAGIC = 0x06054b50, |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 64 | ZIP_DD_MAGIC = 0x08074b50, |
| 65 | #endif |
| 66 | }; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 67 | |
Paul Fox | cb98163 | 2007-11-05 23:09:03 +0000 | [diff] [blame] | 68 | #define ZIP_HEADER_LEN 26 |
| 69 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 70 | typedef union { |
Paul Fox | cb98163 | 2007-11-05 23:09:03 +0000 | [diff] [blame] | 71 | uint8_t raw[ZIP_HEADER_LEN]; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 72 | struct { |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 73 | uint16_t version; /* 0-1 */ |
Denys Vlasenko | e98884b | 2010-05-24 04:46:18 +0200 | [diff] [blame] | 74 | uint16_t zip_flags; /* 2-3 */ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 75 | uint16_t method; /* 4-5 */ |
| 76 | uint16_t modtime; /* 6-7 */ |
| 77 | uint16_t moddate; /* 8-9 */ |
| 78 | uint32_t crc32 PACKED; /* 10-13 */ |
| 79 | uint32_t cmpsize PACKED; /* 14-17 */ |
| 80 | uint32_t ucmpsize PACKED; /* 18-21 */ |
| 81 | uint16_t filename_len; /* 22-23 */ |
| 82 | uint16_t extra_len; /* 24-25 */ |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 83 | } formatted PACKED; |
| 84 | } zip_header_t; /* PACKED - gcc 4.2.1 doesn't like it (spews warning) */ |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 85 | |
Paul Fox | cb98163 | 2007-11-05 23:09:03 +0000 | [diff] [blame] | 86 | /* Check the offset of the last element, not the length. This leniency |
| 87 | * allows for poor packing, whereby the overall struct may be too long, |
| 88 | * even though the elements are all in the right place. |
| 89 | */ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 90 | struct BUG_zip_header_must_be_26_bytes { |
Paul Fox | cb98163 | 2007-11-05 23:09:03 +0000 | [diff] [blame] | 91 | char BUG_zip_header_must_be_26_bytes[ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 92 | offsetof(zip_header_t, formatted.extra_len) + 2 |
| 93 | == ZIP_HEADER_LEN ? 1 : -1]; |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 94 | }; |
| 95 | |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 96 | #define FIX_ENDIANNESS_ZIP(zip_header) do { \ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 97 | (zip_header).formatted.version = SWAP_LE16((zip_header).formatted.version ); \ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 98 | (zip_header).formatted.method = SWAP_LE16((zip_header).formatted.method ); \ |
| 99 | (zip_header).formatted.modtime = SWAP_LE16((zip_header).formatted.modtime ); \ |
| 100 | (zip_header).formatted.moddate = SWAP_LE16((zip_header).formatted.moddate ); \ |
| 101 | (zip_header).formatted.crc32 = SWAP_LE32((zip_header).formatted.crc32 ); \ |
| 102 | (zip_header).formatted.cmpsize = SWAP_LE32((zip_header).formatted.cmpsize ); \ |
| 103 | (zip_header).formatted.ucmpsize = SWAP_LE32((zip_header).formatted.ucmpsize ); \ |
| 104 | (zip_header).formatted.filename_len = SWAP_LE16((zip_header).formatted.filename_len); \ |
| 105 | (zip_header).formatted.extra_len = SWAP_LE16((zip_header).formatted.extra_len ); \ |
| 106 | } while (0) |
| 107 | |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 108 | #define CDF_HEADER_LEN 42 |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 109 | |
| 110 | typedef union { |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 111 | uint8_t raw[CDF_HEADER_LEN]; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 112 | struct { |
| 113 | /* uint32_t signature; 50 4b 01 02 */ |
| 114 | uint16_t version_made_by; /* 0-1 */ |
| 115 | uint16_t version_needed; /* 2-3 */ |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 116 | uint16_t cdf_flags; /* 4-5 */ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 117 | uint16_t method; /* 6-7 */ |
| 118 | uint16_t mtime; /* 8-9 */ |
| 119 | uint16_t mdate; /* 10-11 */ |
| 120 | uint32_t crc32; /* 12-15 */ |
| 121 | uint32_t cmpsize; /* 16-19 */ |
| 122 | uint32_t ucmpsize; /* 20-23 */ |
| 123 | uint16_t file_name_length; /* 24-25 */ |
| 124 | uint16_t extra_field_length; /* 26-27 */ |
| 125 | uint16_t file_comment_length; /* 28-29 */ |
| 126 | uint16_t disk_number_start; /* 30-31 */ |
| 127 | uint16_t internal_file_attributes; /* 32-33 */ |
| 128 | uint32_t external_file_attributes PACKED; /* 34-37 */ |
| 129 | uint32_t relative_offset_of_local_header PACKED; /* 38-41 */ |
| 130 | } formatted PACKED; |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 131 | } cdf_header_t; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 132 | |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 133 | struct BUG_cdf_header_must_be_42_bytes { |
| 134 | char BUG_cdf_header_must_be_42_bytes[ |
| 135 | offsetof(cdf_header_t, formatted.relative_offset_of_local_header) + 4 |
| 136 | == CDF_HEADER_LEN ? 1 : -1]; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 137 | }; |
| 138 | |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 139 | #define FIX_ENDIANNESS_CDF(cdf_header) do { \ |
| 140 | (cdf_header).formatted.crc32 = SWAP_LE32((cdf_header).formatted.crc32 ); \ |
| 141 | (cdf_header).formatted.cmpsize = SWAP_LE32((cdf_header).formatted.cmpsize ); \ |
| 142 | (cdf_header).formatted.ucmpsize = SWAP_LE32((cdf_header).formatted.ucmpsize ); \ |
| 143 | (cdf_header).formatted.file_name_length = SWAP_LE16((cdf_header).formatted.file_name_length); \ |
| 144 | (cdf_header).formatted.extra_field_length = SWAP_LE16((cdf_header).formatted.extra_field_length); \ |
| 145 | (cdf_header).formatted.file_comment_length = SWAP_LE16((cdf_header).formatted.file_comment_length); \ |
| 146 | IF_DESKTOP( \ |
| 147 | (cdf_header).formatted.version_made_by = SWAP_LE16((cdf_header).formatted.version_made_by); \ |
| 148 | (cdf_header).formatted.external_file_attributes = SWAP_LE32((cdf_header).formatted.external_file_attributes); \ |
| 149 | ) \ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 150 | } while (0) |
| 151 | |
| 152 | #define CDE_HEADER_LEN 16 |
| 153 | |
| 154 | typedef union { |
| 155 | uint8_t raw[CDE_HEADER_LEN]; |
| 156 | struct { |
| 157 | /* uint32_t signature; 50 4b 05 06 */ |
| 158 | uint16_t this_disk_no; |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 159 | uint16_t disk_with_cdf_no; |
| 160 | uint16_t cdf_entries_on_this_disk; |
| 161 | uint16_t cdf_entries_total; |
| 162 | uint32_t cdf_size; |
| 163 | uint32_t cdf_offset; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 164 | /* uint16_t file_comment_length; */ |
| 165 | /* .ZIP file comment (variable size) */ |
| 166 | } formatted PACKED; |
| 167 | } cde_header_t; |
| 168 | |
| 169 | struct BUG_cde_header_must_be_16_bytes { |
| 170 | char BUG_cde_header_must_be_16_bytes[ |
| 171 | sizeof(cde_header_t) == CDE_HEADER_LEN ? 1 : -1]; |
| 172 | }; |
| 173 | |
| 174 | #define FIX_ENDIANNESS_CDE(cde_header) do { \ |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 175 | (cde_header).formatted.cdf_offset = SWAP_LE32((cde_header).formatted.cdf_offset); \ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 176 | } while (0) |
| 177 | |
| 178 | enum { zip_fd = 3 }; |
| 179 | |
| 180 | |
| 181 | #if ENABLE_DESKTOP |
Dan Fandrich | b76f18d | 2010-06-17 21:39:44 -0700 | [diff] [blame] | 182 | |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 183 | /* Seen in the wild: |
| 184 | * Self-extracting PRO2K3XP_32.exe contains 19078464 byte zip archive, |
| 185 | * where CDE was nearly 48 kbytes before EOF. |
| 186 | * (Surprisingly, it also apparently has *another* CDE structure |
| 187 | * closer to the end, with bogus cdf_offset). |
| 188 | * To make extraction work, bumped PEEK_FROM_END from 16k to 64k. |
| 189 | */ |
| 190 | #define PEEK_FROM_END (64*1024) |
| 191 | |
| 192 | /* This value means that we failed to find CDF */ |
| 193 | #define BAD_CDF_OFFSET ((uint32_t)0xffffffff) |
Dan Fandrich | b76f18d | 2010-06-17 21:39:44 -0700 | [diff] [blame] | 194 | |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 195 | /* NB: does not preserve file position! */ |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 196 | static uint32_t find_cdf_offset(void) |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 197 | { |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 198 | cde_header_t cde_header; |
| 199 | unsigned char *p; |
| 200 | off_t end; |
Dan Fandrich | b76f18d | 2010-06-17 21:39:44 -0700 | [diff] [blame] | 201 | unsigned char *buf = xzalloc(PEEK_FROM_END); |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 202 | |
| 203 | end = xlseek(zip_fd, 0, SEEK_END); |
Dan Fandrich | b76f18d | 2010-06-17 21:39:44 -0700 | [diff] [blame] | 204 | end -= PEEK_FROM_END; |
Denys Vlasenko | fc2bb8f | 2010-05-24 13:07:55 +0200 | [diff] [blame] | 205 | if (end < 0) |
| 206 | end = 0; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 207 | xlseek(zip_fd, end, SEEK_SET); |
Dan Fandrich | b76f18d | 2010-06-17 21:39:44 -0700 | [diff] [blame] | 208 | full_read(zip_fd, buf, PEEK_FROM_END); |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 209 | |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 210 | cde_header.formatted.cdf_offset = BAD_CDF_OFFSET; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 211 | p = buf; |
Dan Fandrich | b76f18d | 2010-06-17 21:39:44 -0700 | [diff] [blame] | 212 | while (p <= buf + PEEK_FROM_END - CDE_HEADER_LEN - 4) { |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 213 | if (*p != 'P') { |
| 214 | p++; |
| 215 | continue; |
| 216 | } |
| 217 | if (*++p != 'K') |
| 218 | continue; |
| 219 | if (*++p != 5) |
| 220 | continue; |
| 221 | if (*++p != 6) |
| 222 | continue; |
| 223 | /* we found CDE! */ |
| 224 | memcpy(cde_header.raw, p + 1, CDE_HEADER_LEN); |
| 225 | FIX_ENDIANNESS_CDE(cde_header); |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 226 | /* |
| 227 | * I've seen .ZIP files with seemingly valid CDEs |
| 228 | * where cdf_offset points past EOF - ?? |
| 229 | * Ignore such CDEs: |
| 230 | */ |
| 231 | if ((int64_t) cde_header.formatted.cdf_offset < end + (p - buf)) |
| 232 | break; |
| 233 | cde_header.formatted.cdf_offset = BAD_CDF_OFFSET; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 234 | } |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 235 | free(buf); |
| 236 | return cde_header.formatted.cdf_offset; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 237 | }; |
| 238 | |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 239 | static uint32_t read_next_cdf(uint32_t cdf_offset, cdf_header_t *cdf_ptr) |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 240 | { |
| 241 | off_t org; |
| 242 | |
| 243 | org = xlseek(zip_fd, 0, SEEK_CUR); |
| 244 | |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 245 | if (!cdf_offset) |
| 246 | cdf_offset = find_cdf_offset(); |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 247 | |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 248 | if (cdf_offset != BAD_CDF_OFFSET) { |
| 249 | xlseek(zip_fd, cdf_offset + 4, SEEK_SET); |
| 250 | xread(zip_fd, cdf_ptr->raw, CDF_HEADER_LEN); |
| 251 | FIX_ENDIANNESS_CDF(*cdf_ptr); |
| 252 | cdf_offset += 4 + CDF_HEADER_LEN |
| 253 | + cdf_ptr->formatted.file_name_length |
| 254 | + cdf_ptr->formatted.extra_field_length |
| 255 | + cdf_ptr->formatted.file_comment_length; |
| 256 | } |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 257 | |
| 258 | xlseek(zip_fd, org, SEEK_SET); |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 259 | return cdf_offset; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 260 | }; |
| 261 | #endif |
| 262 | |
| 263 | static void unzip_skip(off_t skip) |
| 264 | { |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 265 | if (skip != 0) |
| 266 | if (lseek(zip_fd, skip, SEEK_CUR) == (off_t)-1) |
| 267 | bb_copyfd_exact_size(zip_fd, -1, skip); |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 268 | } |
| 269 | |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 270 | static void unzip_create_leading_dirs(const char *fn) |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 271 | { |
| 272 | /* Create all leading directories */ |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 273 | char *name = xstrdup(fn); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 274 | if (bb_make_directory(dirname(name), 0777, FILEUTILS_RECUR)) { |
Tanguy Pruvot | 8a6c2c2 | 2012-04-28 00:24:09 +0200 | [diff] [blame] | 275 | xfunc_die(); /* bb_make_directory is noisy */ |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 276 | } |
| 277 | free(name); |
| 278 | } |
| 279 | |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 280 | static void unzip_extract(zip_header_t *zip_header, int dst_fd) |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 281 | { |
"Robert P. J. Day" | eea5618 | 2006-07-20 19:02:24 +0000 | [diff] [blame] | 282 | if (zip_header->formatted.method == 0) { |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 283 | /* Method 0 - stored (not compressed) */ |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 284 | off_t size = zip_header->formatted.ucmpsize; |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 285 | if (size) |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 286 | bb_copyfd_exact_size(zip_fd, dst_fd, size); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 287 | } else { |
| 288 | /* Method 8 - inflate */ |
Tanguy Pruvot | 8a6c2c2 | 2012-04-28 00:24:09 +0200 | [diff] [blame] | 289 | transformer_aux_data_t aux; |
| 290 | init_transformer_aux_data(&aux); |
| 291 | aux.bytes_in = zip_header->formatted.cmpsize; |
| 292 | if (inflate_unzip(&aux, zip_fd, dst_fd) < 0) |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 293 | bb_error_msg_and_die("inflate error"); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 294 | /* Validate decompression - crc */ |
Tanguy Pruvot | 8a6c2c2 | 2012-04-28 00:24:09 +0200 | [diff] [blame] | 295 | if (zip_header->formatted.crc32 != (aux.crc32 ^ 0xffffffffL)) { |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 296 | bb_error_msg_and_die("crc error"); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 297 | } |
| 298 | /* Validate decompression - size */ |
Tanguy Pruvot | 6fef6a3 | 2012-05-05 15:26:43 +0200 | [diff] [blame] | 299 | if (zip_header->formatted.ucmpsize != (uint32_t) aux.bytes_out) { |
Denis Vlasenko | fcc5696 | 2007-10-19 21:03:09 +0000 | [diff] [blame] | 300 | /* Don't die. Who knows, maybe len calculation |
| 301 | * was botched somewhere. After all, crc matched! */ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 302 | bb_error_msg("bad length"); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 303 | } |
| 304 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 305 | } |
| 306 | |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 307 | static void my_fgets80(char *buf80) |
| 308 | { |
| 309 | fflush_all(); |
| 310 | if (!fgets(buf80, 80, stdin)) { |
| 311 | bb_perror_msg_and_die("can't read standard input"); |
| 312 | } |
| 313 | } |
| 314 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 315 | int unzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Rob Landley | dfba741 | 2006-03-06 20:47:33 +0000 | [diff] [blame] | 316 | int unzip_main(int argc, char **argv) |
Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 317 | { |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 318 | enum { O_PROMPT, O_NEVER, O_ALWAYS }; |
| 319 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 320 | zip_header_t zip_header; |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 321 | smallint quiet = 0; |
| 322 | IF_NOT_DESKTOP(const) smallint verbose = 0; |
Paul Fox | 9382b38 | 2007-09-07 20:28:25 +0000 | [diff] [blame] | 323 | smallint listing = 0; |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 324 | smallint overwrite = O_PROMPT; |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 325 | smallint x_opt_seen; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 326 | #if ENABLE_DESKTOP |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 327 | uint32_t cdf_offset; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 328 | #endif |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 329 | unsigned long total_usize; |
| 330 | unsigned long total_size; |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 331 | unsigned total_entries; |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 332 | int dst_fd = -1; |
| 333 | char *src_fn = NULL; |
| 334 | char *dst_fn = NULL; |
Mike Frysinger | 6902455 | 2005-07-30 07:30:26 +0000 | [diff] [blame] | 335 | llist_t *zaccept = NULL; |
| 336 | llist_t *zreject = NULL; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 337 | char *base_dir = NULL; |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 338 | int i, opt; |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 339 | char key_buf[80]; /* must match size used by my_fgets80 */ |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 340 | struct stat stat_buf; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 341 | |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 342 | /* -q, -l and -v: UnZip 5.52 of 28 February 2005, by Info-ZIP: |
| 343 | * |
| 344 | * # /usr/bin/unzip -qq -v decompress_unlzma.i.zip |
| 345 | * 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i |
| 346 | * # /usr/bin/unzip -q -v decompress_unlzma.i.zip |
| 347 | * Length Method Size Ratio Date Time CRC-32 Name |
| 348 | * -------- ------ ------- ----- ---- ---- ------ ---- |
| 349 | * 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i |
| 350 | * -------- ------- --- ------- |
| 351 | * 204372 35278 83% 1 file |
| 352 | * # /usr/bin/unzip -v decompress_unlzma.i.zip |
| 353 | * Archive: decompress_unlzma.i.zip |
| 354 | * Length Method Size Ratio Date Time CRC-32 Name |
| 355 | * -------- ------ ------- ----- ---- ---- ------ ---- |
| 356 | * 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i |
| 357 | * -------- ------- --- ------- |
| 358 | * 204372 35278 83% 1 file |
| 359 | * # unzip -v decompress_unlzma.i.zip |
| 360 | * Archive: decompress_unlzma.i.zip |
| 361 | * Length Date Time Name |
| 362 | * -------- ---- ---- ---- |
| 363 | * 204372 09-06-09 14:23 decompress_unlzma.i |
| 364 | * -------- ------- |
| 365 | * 204372 1 files |
| 366 | * # /usr/bin/unzip -l -qq decompress_unlzma.i.zip |
| 367 | * 204372 09-06-09 14:23 decompress_unlzma.i |
| 368 | * # /usr/bin/unzip -l -q decompress_unlzma.i.zip |
| 369 | * Length Date Time Name |
| 370 | * -------- ---- ---- ---- |
| 371 | * 204372 09-06-09 14:23 decompress_unlzma.i |
| 372 | * -------- ------- |
| 373 | * 204372 1 file |
| 374 | * # /usr/bin/unzip -l decompress_unlzma.i.zip |
| 375 | * Archive: decompress_unlzma.i.zip |
| 376 | * Length Date Time Name |
| 377 | * -------- ---- ---- ---- |
| 378 | * 204372 09-06-09 14:23 decompress_unlzma.i |
| 379 | * -------- ------- |
| 380 | * 204372 1 file |
| 381 | */ |
| 382 | |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 383 | x_opt_seen = 0; |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 384 | /* '-' makes getopt return 1 for non-options */ |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 385 | while ((opt = getopt(argc, argv, "-d:lnopqxv")) != -1) { |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 386 | switch (opt) { |
| 387 | case 'd': /* Extract to base directory */ |
| 388 | base_dir = optarg; |
| 389 | break; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 390 | |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 391 | case 'l': /* List */ |
| 392 | listing = 1; |
| 393 | break; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 394 | |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 395 | case 'n': /* Never overwrite existing files */ |
| 396 | overwrite = O_NEVER; |
| 397 | break; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 398 | |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 399 | case 'o': /* Always overwrite existing files */ |
| 400 | overwrite = O_ALWAYS; |
| 401 | break; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 402 | |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 403 | case 'p': /* Extract files to stdout and fall through to set verbosity */ |
| 404 | dst_fd = STDOUT_FILENO; |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 405 | |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 406 | case 'q': /* Be quiet */ |
| 407 | quiet++; |
| 408 | break; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 409 | |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 410 | case 'v': /* Verbose list */ |
| 411 | IF_DESKTOP(verbose++;) |
| 412 | listing = 1; |
| 413 | break; |
| 414 | |
| 415 | case 'x': |
| 416 | x_opt_seen = 1; |
| 417 | break; |
| 418 | |
| 419 | case 1: |
| 420 | if (!src_fn) { |
| 421 | /* The zip file */ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 422 | /* +5: space for ".zip" and NUL */ |
| 423 | src_fn = xmalloc(strlen(optarg) + 5); |
Denis Vlasenko | 666c40c | 2007-03-31 10:17:24 +0000 | [diff] [blame] | 424 | strcpy(src_fn, optarg); |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 425 | } else if (!x_opt_seen) { |
| 426 | /* Include files */ |
| 427 | llist_add_to(&zaccept, optarg); |
| 428 | } else { |
| 429 | /* Exclude files */ |
| 430 | llist_add_to(&zreject, optarg); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 431 | } |
| 432 | break; |
| 433 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 434 | default: |
| 435 | bb_show_usage(); |
Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 436 | } |
| 437 | } |
| 438 | |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 439 | #ifndef __GLIBC__ |
| 440 | /* |
| 441 | * This code is needed for non-GNU getopt |
| 442 | * which doesn't understand "-" in option string. |
| 443 | * The -x option won't work properly in this case: |
| 444 | * "unzip a.zip q -x w e" will be interpreted as |
| 445 | * "unzip a.zip q w e -x" = "unzip a.zip q w e" |
| 446 | */ |
| 447 | argv += optind; |
| 448 | if (argv[0]) { |
| 449 | /* +5: space for ".zip" and NUL */ |
| 450 | src_fn = xmalloc(strlen(argv[0]) + 5); |
| 451 | strcpy(src_fn, argv[0]); |
| 452 | while (*++argv) |
| 453 | llist_add_to(&zaccept, *argv); |
| 454 | } |
| 455 | #endif |
| 456 | |
| 457 | if (!src_fn) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 458 | bb_show_usage(); |
Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 459 | } |
| 460 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 461 | /* Open input file */ |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 462 | if (LONE_DASH(src_fn)) { |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 463 | xdup2(STDIN_FILENO, zip_fd); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 464 | /* Cannot use prompt mode since zip data is arriving on STDIN */ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 465 | if (overwrite == O_PROMPT) |
| 466 | overwrite = O_NEVER; |
Glenn L McGrath | 237ae42 | 2002-11-03 14:05:15 +0000 | [diff] [blame] | 467 | } else { |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 468 | static const char extn[][5] = { ".zip", ".ZIP" }; |
| 469 | char *ext = src_fn + strlen(src_fn); |
| 470 | int src_fd; |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 471 | |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 472 | i = 0; |
| 473 | for (;;) { |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 474 | src_fd = open(src_fn, O_RDONLY); |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 475 | if (src_fd >= 0) |
| 476 | break; |
| 477 | if (++i > 2) { |
| 478 | *ext = '\0'; |
| 479 | bb_error_msg_and_die("can't open %s[.zip]", src_fn); |
| 480 | } |
| 481 | strcpy(ext, extn[i - 1]); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 482 | } |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 483 | xmove_fd(src_fd, zip_fd); |
Glenn L McGrath | 237ae42 | 2002-11-03 14:05:15 +0000 | [diff] [blame] | 484 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 485 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 486 | /* Change dir if necessary */ |
Bernhard Reutner-Fischer | d9cf7ac | 2006-04-12 18:39:58 +0000 | [diff] [blame] | 487 | if (base_dir) |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 488 | xchdir(base_dir); |
Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 489 | |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 490 | if (quiet <= 1) { /* not -qq */ |
| 491 | if (quiet == 0) |
| 492 | printf("Archive: %s\n", src_fn); |
| 493 | if (listing) { |
| 494 | puts(verbose ? |
| 495 | " Length Method Size Ratio Date Time CRC-32 Name\n" |
| 496 | "-------- ------ ------- ----- ---- ---- ------ ----" |
| 497 | : |
| 498 | " Length Date Time Name\n" |
| 499 | " -------- ---- ---- ----" |
| 500 | ); |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 501 | } |
| 502 | } |
Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 503 | |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 504 | /* Example of an archive with one 0-byte long file named 'z' |
| 505 | * created by Zip 2.31 on Unix: |
| 506 | * 0000 [50 4b]03 04 0a 00 00 00 00 00 42 1a b8 3c 00 00 |PK........B..<..| |
| 507 | * sig........ vneed flags compr mtime mdate crc32> |
| 508 | * 0010 00 00 00 00 00 00 00 00 00 00 01 00 15 00 7a 55 |..............zU| |
| 509 | * >..... csize...... usize...... fnlen exlen fn ex> |
| 510 | * 0020 54 09 00 03 cc d3 f9 4b cc d3 f9 4b 55 78 04 00 |T......K...KUx..| |
| 511 | * >tra_field...................................... |
| 512 | * 0030 00 00 00 00[50 4b]01 02 17 03 0a 00 00 00 00 00 |....PK..........| |
| 513 | * ........... sig........ vmade vneed flags compr |
| 514 | * 0040 42 1a b8 3c 00 00 00 00 00 00 00 00 00 00 00 00 |B..<............| |
| 515 | * mtime mdate crc32...... csize...... usize...... |
| 516 | * 0050 01 00 0d 00 00 00 00 00 00 00 00 00 a4 81 00 00 |................| |
| 517 | * fnlen exlen clen. dnum. iattr eattr...... relofs> (eattr = rw-r--r--) |
| 518 | * 0060 00 00 7a 55 54 05 00 03 cc d3 f9 4b 55 78 00 00 |..zUT......KUx..| |
| 519 | * >..... fn extra_field........................... |
| 520 | * 0070 [50 4b]05 06 00 00 00 00 01 00 01 00 3c 00 00 00 |PK..........<...| |
| 521 | * 0080 34 00 00 00 00 00 |4.....| |
| 522 | */ |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 523 | total_usize = 0; |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 524 | total_size = 0; |
| 525 | total_entries = 0; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 526 | #if ENABLE_DESKTOP |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 527 | cdf_offset = 0; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 528 | #endif |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 529 | while (1) { |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 530 | uint32_t magic; |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 531 | mode_t dir_mode = 0777; |
| 532 | #if ENABLE_DESKTOP |
| 533 | mode_t file_mode = 0666; |
| 534 | #endif |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 535 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 536 | /* Check magic number */ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 537 | xread(zip_fd, &magic, 4); |
Denis Vlasenko | 48a9971 | 2008-07-26 17:32:41 +0000 | [diff] [blame] | 538 | /* Central directory? It's at the end, so exit */ |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 539 | if (magic == ZIP_CDF_MAGIC) |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 540 | break; |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 541 | #if ENABLE_DESKTOP |
| 542 | /* Data descriptor? It was a streaming file, go on */ |
| 543 | if (magic == ZIP_DD_MAGIC) { |
| 544 | /* skip over duplicate crc32, cmpsize and ucmpsize */ |
| 545 | unzip_skip(3 * 4); |
| 546 | continue; |
| 547 | } |
| 548 | #endif |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 549 | if (magic != ZIP_FILEHEADER_MAGIC) |
Denis Vlasenko | 48a9971 | 2008-07-26 17:32:41 +0000 | [diff] [blame] | 550 | bb_error_msg_and_die("invalid zip magic %08X", (int)magic); |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 551 | |
| 552 | /* Read the file header */ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 553 | xread(zip_fd, zip_header.raw, ZIP_HEADER_LEN); |
| 554 | FIX_ENDIANNESS_ZIP(zip_header); |
"Robert P. J. Day" | eea5618 | 2006-07-20 19:02:24 +0000 | [diff] [blame] | 555 | if ((zip_header.formatted.method != 0) && (zip_header.formatted.method != 8)) { |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 556 | bb_error_msg_and_die("unsupported method %d", zip_header.formatted.method); |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 557 | } |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 558 | #if !ENABLE_DESKTOP |
Denys Vlasenko | e98884b | 2010-05-24 04:46:18 +0200 | [diff] [blame] | 559 | if (zip_header.formatted.zip_flags & SWAP_LE16(0x0009)) { |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 560 | bb_error_msg_and_die("zip flags 1 and 8 are not supported"); |
| 561 | } |
| 562 | #else |
Denys Vlasenko | e98884b | 2010-05-24 04:46:18 +0200 | [diff] [blame] | 563 | if (zip_header.formatted.zip_flags & SWAP_LE16(0x0001)) { |
Denis Vlasenko | 48a9971 | 2008-07-26 17:32:41 +0000 | [diff] [blame] | 564 | /* 0x0001 - encrypted */ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 565 | bb_error_msg_and_die("zip flag 1 (encryption) is not supported"); |
| 566 | } |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 567 | |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 568 | if (cdf_offset != BAD_CDF_OFFSET) { |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 569 | cdf_header_t cdf_header; |
| 570 | cdf_offset = read_next_cdf(cdf_offset, &cdf_header); |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 571 | /* |
| 572 | * Note: cdf_offset can become BAD_CDF_OFFSET after the above call. |
| 573 | */ |
Denys Vlasenko | e98884b | 2010-05-24 04:46:18 +0200 | [diff] [blame] | 574 | if (zip_header.formatted.zip_flags & SWAP_LE16(0x0008)) { |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 575 | /* 0x0008 - streaming. [u]cmpsize can be reliably gotten |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 576 | * only from Central Directory. See unzip_doc.txt |
| 577 | */ |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 578 | zip_header.formatted.crc32 = cdf_header.formatted.crc32; |
| 579 | zip_header.formatted.cmpsize = cdf_header.formatted.cmpsize; |
| 580 | zip_header.formatted.ucmpsize = cdf_header.formatted.ucmpsize; |
| 581 | } |
| 582 | if ((cdf_header.formatted.version_made_by >> 8) == 3) { |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 583 | /* This archive is created on Unix */ |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 584 | dir_mode = file_mode = (cdf_header.formatted.external_file_attributes >> 16); |
| 585 | } |
Denis Vlasenko | 48a9971 | 2008-07-26 17:32:41 +0000 | [diff] [blame] | 586 | } |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 587 | if (cdf_offset == BAD_CDF_OFFSET |
| 588 | && (zip_header.formatted.zip_flags & SWAP_LE16(0x0008)) |
| 589 | ) { |
| 590 | /* If it's a streaming zip, we _require_ CDF */ |
| 591 | bb_error_msg_and_die("can't find file table"); |
| 592 | } |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 593 | #endif |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 594 | |
| 595 | /* Read filename */ |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 596 | free(dst_fn); |
"Robert P. J. Day" | eea5618 | 2006-07-20 19:02:24 +0000 | [diff] [blame] | 597 | dst_fn = xzalloc(zip_header.formatted.filename_len + 1); |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 598 | xread(zip_fd, dst_fn, zip_header.formatted.filename_len); |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 599 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 600 | /* Skip extra header bytes */ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 601 | unzip_skip(zip_header.formatted.extra_len); |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 602 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 603 | /* Filter zip entries */ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 604 | if (find_list_entry(zreject, dst_fn) |
| 605 | || (zaccept && !find_list_entry(zaccept, dst_fn)) |
| 606 | ) { /* Skip entry */ |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 607 | i = 'n'; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 608 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 609 | } else { /* Extract entry */ |
Paul Fox | 9382b38 | 2007-09-07 20:28:25 +0000 | [diff] [blame] | 610 | if (listing) { /* List entry */ |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 611 | unsigned dostime = zip_header.formatted.modtime | (zip_header.formatted.moddate << 16); |
| 612 | if (!verbose) { |
| 613 | // " Length Date Time Name\n" |
| 614 | // " -------- ---- ---- ----" |
| 615 | printf( "%9u %02u-%02u-%02u %02u:%02u %s\n", |
| 616 | (unsigned)zip_header.formatted.ucmpsize, |
| 617 | (dostime & 0x01e00000) >> 21, |
| 618 | (dostime & 0x001f0000) >> 16, |
| 619 | (((dostime & 0xfe000000) >> 25) + 1980) % 100, |
| 620 | (dostime & 0x0000f800) >> 11, |
| 621 | (dostime & 0x000007e0) >> 5, |
| 622 | dst_fn); |
| 623 | total_usize += zip_header.formatted.ucmpsize; |
Denis Vlasenko | feb7ae7 | 2007-10-01 12:05:12 +0000 | [diff] [blame] | 624 | } else { |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 625 | unsigned long percents = zip_header.formatted.ucmpsize - zip_header.formatted.cmpsize; |
| 626 | percents = percents * 100; |
| 627 | if (zip_header.formatted.ucmpsize) |
| 628 | percents /= zip_header.formatted.ucmpsize; |
| 629 | // " Length Method Size Ratio Date Time CRC-32 Name\n" |
| 630 | // "-------- ------ ------- ----- ---- ---- ------ ----" |
| 631 | printf( "%8u Defl:N" "%9u%4u%% %02u-%02u-%02u %02u:%02u %08x %s\n", |
| 632 | (unsigned)zip_header.formatted.ucmpsize, |
| 633 | (unsigned)zip_header.formatted.cmpsize, |
| 634 | (unsigned)percents, |
| 635 | (dostime & 0x01e00000) >> 21, |
| 636 | (dostime & 0x001f0000) >> 16, |
| 637 | (((dostime & 0xfe000000) >> 25) + 1980) % 100, |
| 638 | (dostime & 0x0000f800) >> 11, |
| 639 | (dostime & 0x000007e0) >> 5, |
| 640 | zip_header.formatted.crc32, |
| 641 | dst_fn); |
| 642 | total_usize += zip_header.formatted.ucmpsize; |
| 643 | total_size += zip_header.formatted.cmpsize; |
Denis Vlasenko | feb7ae7 | 2007-10-01 12:05:12 +0000 | [diff] [blame] | 644 | } |
| 645 | i = 'n'; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 646 | } else if (dst_fd == STDOUT_FILENO) { /* Extracting to STDOUT */ |
| 647 | i = -1; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 648 | } else if (last_char_is(dst_fn, '/')) { /* Extract directory */ |
| 649 | if (stat(dst_fn, &stat_buf) == -1) { |
| 650 | if (errno != ENOENT) { |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 651 | bb_perror_msg_and_die("can't stat '%s'", dst_fn); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 652 | } |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 653 | if (!quiet) { |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 654 | printf(" creating: %s\n", dst_fn); |
| 655 | } |
| 656 | unzip_create_leading_dirs(dst_fn); |
Natanael Copa | 43243ab | 2012-05-22 17:11:46 +0200 | [diff] [blame] | 657 | if (bb_make_directory(dst_fn, dir_mode, FILEUTILS_IGNORE_CHMOD_ERR)) { |
Tanguy Pruvot | 8a6c2c2 | 2012-04-28 00:24:09 +0200 | [diff] [blame] | 658 | xfunc_die(); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 659 | } |
| 660 | } else { |
| 661 | if (!S_ISDIR(stat_buf.st_mode)) { |
| 662 | bb_error_msg_and_die("'%s' exists but is not directory", dst_fn); |
| 663 | } |
| 664 | } |
| 665 | i = 'n'; |
| 666 | |
| 667 | } else { /* Extract file */ |
Denis Vlasenko | 48a9971 | 2008-07-26 17:32:41 +0000 | [diff] [blame] | 668 | check_file: |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 669 | if (stat(dst_fn, &stat_buf) == -1) { /* File does not exist */ |
| 670 | if (errno != ENOENT) { |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 671 | bb_perror_msg_and_die("can't stat '%s'", dst_fn); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 672 | } |
| 673 | i = 'y'; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 674 | } else { /* File already exists */ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 675 | if (overwrite == O_NEVER) { |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 676 | i = 'n'; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 677 | } else if (S_ISREG(stat_buf.st_mode)) { /* File is regular file */ |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 678 | if (overwrite == O_ALWAYS) { |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 679 | i = 'y'; |
| 680 | } else { |
| 681 | printf("replace %s? [y]es, [n]o, [A]ll, [N]one, [r]ename: ", dst_fn); |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 682 | my_fgets80(key_buf); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 683 | i = key_buf[0]; |
| 684 | } |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 685 | } else { /* File is not regular file */ |
Denis Vlasenko | f5d8c90 | 2008-06-26 14:32:57 +0000 | [diff] [blame] | 686 | bb_error_msg_and_die("'%s' exists but is not regular file", dst_fn); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 687 | } |
| 688 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 689 | } |
| 690 | } |
| 691 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 692 | switch (i) { |
| 693 | case 'A': |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 694 | overwrite = O_ALWAYS; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 695 | case 'y': /* Open file and fall into unzip */ |
| 696 | unzip_create_leading_dirs(dst_fn); |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 697 | #if ENABLE_DESKTOP |
| 698 | dst_fd = xopen3(dst_fn, O_WRONLY | O_CREAT | O_TRUNC, file_mode); |
| 699 | #else |
Bernhard Reutner-Fischer | 64d7e93 | 2006-09-11 16:01:40 +0000 | [diff] [blame] | 700 | dst_fd = xopen(dst_fn, O_WRONLY | O_CREAT | O_TRUNC); |
Denys Vlasenko | 4e8ff73 | 2010-05-24 04:33:02 +0200 | [diff] [blame] | 701 | #endif |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 702 | case -1: /* Unzip */ |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 703 | if (!quiet) { |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 704 | printf(" inflating: %s\n", dst_fn); |
| 705 | } |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 706 | unzip_extract(&zip_header, dst_fd); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 707 | if (dst_fd != STDOUT_FILENO) { |
| 708 | /* closing STDOUT is potentially bad for future business */ |
| 709 | close(dst_fd); |
| 710 | } |
| 711 | break; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 712 | |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 713 | case 'N': |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 714 | overwrite = O_NEVER; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 715 | case 'n': |
| 716 | /* Skip entry data */ |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 717 | unzip_skip(zip_header.formatted.cmpsize); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 718 | break; |
| 719 | |
| 720 | case 'r': |
| 721 | /* Prompt for new name */ |
| 722 | printf("new name: "); |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 723 | my_fgets80(key_buf); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 724 | free(dst_fn); |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 725 | dst_fn = xstrdup(key_buf); |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 726 | chomp(dst_fn); |
Denis Vlasenko | 48a9971 | 2008-07-26 17:32:41 +0000 | [diff] [blame] | 727 | goto check_file; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 728 | |
| 729 | default: |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 730 | printf("error: invalid response [%c]\n", (char)i); |
Denis Vlasenko | 48a9971 | 2008-07-26 17:32:41 +0000 | [diff] [blame] | 731 | goto check_file; |
Paul Fox | 0840b76 | 2005-07-20 20:26:49 +0000 | [diff] [blame] | 732 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 733 | |
Denis Vlasenko | 006e862 | 2008-09-21 01:01:46 +0000 | [diff] [blame] | 734 | total_entries++; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 735 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 736 | |
Denys Vlasenko | 386bc9f | 2009-09-06 16:52:50 +0200 | [diff] [blame] | 737 | if (listing && quiet <= 1) { |
| 738 | if (!verbose) { |
| 739 | // " Length Date Time Name\n" |
| 740 | // " -------- ---- ---- ----" |
| 741 | printf( " -------- -------\n" |
| 742 | "%9lu" " %u files\n", |
| 743 | total_usize, total_entries); |
| 744 | } else { |
| 745 | unsigned long percents = total_usize - total_size; |
| 746 | percents = percents * 100; |
| 747 | if (total_usize) |
| 748 | percents /= total_usize; |
| 749 | // " Length Method Size Ratio Date Time CRC-32 Name\n" |
| 750 | // "-------- ------ ------- ----- ---- ---- ------ ----" |
| 751 | printf( "-------- ------- --- -------\n" |
| 752 | "%8lu" "%17lu%4u%% %u files\n", |
| 753 | total_usize, total_size, (unsigned)percents, |
| 754 | total_entries); |
| 755 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 756 | } |
| 757 | |
Denis Vlasenko | bc7c5d0 | 2007-10-18 23:27:46 +0000 | [diff] [blame] | 758 | return 0; |
Glenn L McGrath | 87ac702 | 2002-01-02 13:52:26 +0000 | [diff] [blame] | 759 | } |