1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Mini unzip implementation for busybox
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4 | *
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5 | * Copyright (C) 2004 by Ed Clark
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6 | *
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7 | * Loosely based on original busybox unzip applet by Laurence Anderson.
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8 | * All options and features should work in this version.
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9 | *
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10 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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11 | */
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12 |
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13 | /* For reference see
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14 | * http://www.pkware.com/company/standards/appnote/
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15 | * http://www.info-zip.org/pub/infozip/doc/appnote-iz-latest.zip
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16 | */
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17 |
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18 | /* TODO
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19 | * Zip64 + other methods
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20 | */
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21 |
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22 | #include "libbb.h"
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23 | #include "archive.h"
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24 |
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25 | enum {
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26 | #if BB_BIG_ENDIAN
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27 | ZIP_FILEHEADER_MAGIC = 0x504b0304,
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28 | ZIP_CDF_MAGIC = 0x504b0102, /* central directory's file header */
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29 | ZIP_CDE_MAGIC = 0x504b0506, /* "end of central directory" record */
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30 | ZIP_DD_MAGIC = 0x504b0708,
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31 | #else
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32 | ZIP_FILEHEADER_MAGIC = 0x04034b50,
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33 | ZIP_CDF_MAGIC = 0x02014b50,
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34 | ZIP_CDE_MAGIC = 0x06054b50,
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35 | ZIP_DD_MAGIC = 0x08074b50,
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36 | #endif
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37 | };
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38 |
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39 | #define ZIP_HEADER_LEN 26
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40 |
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41 | typedef union {
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42 | uint8_t raw[ZIP_HEADER_LEN];
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43 | struct {
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44 | uint16_t version; /* 0-1 */
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45 | uint16_t zip_flags; /* 2-3 */
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46 | uint16_t method; /* 4-5 */
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47 | uint16_t modtime; /* 6-7 */
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48 | uint16_t moddate; /* 8-9 */
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49 | uint32_t crc32 PACKED; /* 10-13 */
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50 | uint32_t cmpsize PACKED; /* 14-17 */
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51 | uint32_t ucmpsize PACKED; /* 18-21 */
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52 | uint16_t filename_len; /* 22-23 */
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53 | uint16_t extra_len; /* 24-25 */
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54 | } formatted PACKED;
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55 | } zip_header_t; /* PACKED - gcc 4.2.1 doesn't like it (spews warning) */
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56 |
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57 | /* Check the offset of the last element, not the length. This leniency
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58 | * allows for poor packing, whereby the overall struct may be too long,
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59 | * even though the elements are all in the right place.
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60 | */
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61 | struct BUG_zip_header_must_be_26_bytes {
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62 | char BUG_zip_header_must_be_26_bytes[
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63 | offsetof(zip_header_t, formatted.extra_len) + 2
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64 | == ZIP_HEADER_LEN ? 1 : -1];
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65 | };
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66 |
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67 | #define FIX_ENDIANNESS_ZIP(zip_header) do { \
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68 | (zip_header).formatted.version = SWAP_LE16((zip_header).formatted.version ); \
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69 | (zip_header).formatted.method = SWAP_LE16((zip_header).formatted.method ); \
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70 | (zip_header).formatted.modtime = SWAP_LE16((zip_header).formatted.modtime ); \
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71 | (zip_header).formatted.moddate = SWAP_LE16((zip_header).formatted.moddate ); \
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72 | (zip_header).formatted.crc32 = SWAP_LE32((zip_header).formatted.crc32 ); \
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73 | (zip_header).formatted.cmpsize = SWAP_LE32((zip_header).formatted.cmpsize ); \
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74 | (zip_header).formatted.ucmpsize = SWAP_LE32((zip_header).formatted.ucmpsize ); \
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75 | (zip_header).formatted.filename_len = SWAP_LE16((zip_header).formatted.filename_len); \
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76 | (zip_header).formatted.extra_len = SWAP_LE16((zip_header).formatted.extra_len ); \
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77 | } while (0)
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78 |
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79 | #define CDF_HEADER_LEN 42
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80 |
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81 | typedef union {
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82 | uint8_t raw[CDF_HEADER_LEN];
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83 | struct {
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84 | /* uint32_t signature; 50 4b 01 02 */
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85 | uint16_t version_made_by; /* 0-1 */
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86 | uint16_t version_needed; /* 2-3 */
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87 | uint16_t cdf_flags; /* 4-5 */
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88 | uint16_t method; /* 6-7 */
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89 | uint16_t mtime; /* 8-9 */
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90 | uint16_t mdate; /* 10-11 */
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91 | uint32_t crc32; /* 12-15 */
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92 | uint32_t cmpsize; /* 16-19 */
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93 | uint32_t ucmpsize; /* 20-23 */
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94 | uint16_t file_name_length; /* 24-25 */
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95 | uint16_t extra_field_length; /* 26-27 */
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96 | uint16_t file_comment_length; /* 28-29 */
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97 | uint16_t disk_number_start; /* 30-31 */
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98 | uint16_t internal_file_attributes; /* 32-33 */
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99 | uint32_t external_file_attributes PACKED; /* 34-37 */
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100 | uint32_t relative_offset_of_local_header PACKED; /* 38-41 */
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101 | } formatted PACKED;
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102 | } cdf_header_t;
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103 |
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104 | struct BUG_cdf_header_must_be_42_bytes {
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105 | char BUG_cdf_header_must_be_42_bytes[
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106 | offsetof(cdf_header_t, formatted.relative_offset_of_local_header) + 4
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107 | == CDF_HEADER_LEN ? 1 : -1];
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108 | };
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109 |
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110 | #define FIX_ENDIANNESS_CDF(cdf_header) do { \
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111 | (cdf_header).formatted.crc32 = SWAP_LE32((cdf_header).formatted.crc32 ); \
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112 | (cdf_header).formatted.cmpsize = SWAP_LE32((cdf_header).formatted.cmpsize ); \
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113 | (cdf_header).formatted.ucmpsize = SWAP_LE32((cdf_header).formatted.ucmpsize ); \
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114 | (cdf_header).formatted.file_name_length = SWAP_LE16((cdf_header).formatted.file_name_length); \
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115 | (cdf_header).formatted.extra_field_length = SWAP_LE16((cdf_header).formatted.extra_field_length); \
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116 | (cdf_header).formatted.file_comment_length = SWAP_LE16((cdf_header).formatted.file_comment_length); \
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117 | IF_DESKTOP( \
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118 | (cdf_header).formatted.version_made_by = SWAP_LE16((cdf_header).formatted.version_made_by); \
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119 | (cdf_header).formatted.external_file_attributes = SWAP_LE32((cdf_header).formatted.external_file_attributes); \
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120 | ) \
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121 | } while (0)
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122 |
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123 | #define CDE_HEADER_LEN 16
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124 |
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125 | typedef union {
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126 | uint8_t raw[CDE_HEADER_LEN];
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127 | struct {
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128 | /* uint32_t signature; 50 4b 05 06 */
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129 | uint16_t this_disk_no;
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130 | uint16_t disk_with_cdf_no;
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131 | uint16_t cdf_entries_on_this_disk;
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132 | uint16_t cdf_entries_total;
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133 | uint32_t cdf_size;
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134 | uint32_t cdf_offset;
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135 | /* uint16_t file_comment_length; */
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136 | /* .ZIP file comment (variable size) */
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137 | } formatted PACKED;
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138 | } cde_header_t;
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139 |
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140 | struct BUG_cde_header_must_be_16_bytes {
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141 | char BUG_cde_header_must_be_16_bytes[
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142 | sizeof(cde_header_t) == CDE_HEADER_LEN ? 1 : -1];
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143 | };
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144 |
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145 | #define FIX_ENDIANNESS_CDE(cde_header) do { \
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146 | (cde_header).formatted.cdf_offset = SWAP_LE32((cde_header).formatted.cdf_offset); \
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147 | } while (0)
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148 |
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149 | enum { zip_fd = 3 };
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150 |
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151 |
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152 | #if ENABLE_DESKTOP
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153 |
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154 | #define PEEK_FROM_END 16384
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155 |
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156 | /* NB: does not preserve file position! */
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157 | static uint32_t find_cdf_offset(void)
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158 | {
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159 | cde_header_t cde_header;
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160 | unsigned char *p;
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161 | off_t end;
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162 | unsigned char *buf = xzalloc(PEEK_FROM_END);
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163 |
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164 | end = xlseek(zip_fd, 0, SEEK_END);
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165 | end -= PEEK_FROM_END;
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166 | if (end < 0)
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167 | end = 0;
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168 | xlseek(zip_fd, end, SEEK_SET);
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169 | full_read(zip_fd, buf, PEEK_FROM_END);
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170 |
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171 | p = buf;
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172 | while (p <= buf + PEEK_FROM_END - CDE_HEADER_LEN - 4) {
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173 | if (*p != 'P') {
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174 | p++;
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175 | continue;
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176 | }
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177 | if (*++p != 'K')
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178 | continue;
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179 | if (*++p != 5)
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180 | continue;
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181 | if (*++p != 6)
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182 | continue;
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183 | /* we found CDE! */
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184 | memcpy(cde_header.raw, p + 1, CDE_HEADER_LEN);
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185 | FIX_ENDIANNESS_CDE(cde_header);
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186 | free(buf);
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187 | return cde_header.formatted.cdf_offset;
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188 | }
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189 | //free(buf);
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190 | bb_error_msg_and_die("can't find file table");
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191 | };
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192 |
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193 | static uint32_t read_next_cdf(uint32_t cdf_offset, cdf_header_t *cdf_ptr)
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194 | {
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195 | off_t org;
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196 |
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197 | org = xlseek(zip_fd, 0, SEEK_CUR);
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198 |
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199 | if (!cdf_offset)
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200 | cdf_offset = find_cdf_offset();
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201 |
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202 | xlseek(zip_fd, cdf_offset + 4, SEEK_SET);
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203 | xread(zip_fd, cdf_ptr->raw, CDF_HEADER_LEN);
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204 | FIX_ENDIANNESS_CDF(*cdf_ptr);
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205 | cdf_offset += 4 + CDF_HEADER_LEN
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206 | + cdf_ptr->formatted.file_name_length
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207 | + cdf_ptr->formatted.extra_field_length
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208 | + cdf_ptr->formatted.file_comment_length;
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209 |
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210 | xlseek(zip_fd, org, SEEK_SET);
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211 | return cdf_offset;
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212 | };
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213 | #endif
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214 |
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215 | static void unzip_skip(off_t skip)
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216 | {
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217 | if (lseek(zip_fd, skip, SEEK_CUR) == (off_t)-1)
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218 | bb_copyfd_exact_size(zip_fd, -1, skip);
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219 | }
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220 |
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221 | static void unzip_create_leading_dirs(const char *fn)
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222 | {
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223 | /* Create all leading directories */
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224 | char *name = xstrdup(fn);
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225 | if (bb_make_directory(dirname(name), 0777, FILEUTILS_RECUR)) {
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226 | bb_error_msg_and_die("exiting"); /* bb_make_directory is noisy */
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227 | }
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228 | free(name);
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229 | }
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230 |
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231 | static void unzip_extract(zip_header_t *zip_header, int dst_fd)
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232 | {
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233 | if (zip_header->formatted.method == 0) {
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234 | /* Method 0 - stored (not compressed) */
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235 | off_t size = zip_header->formatted.ucmpsize;
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236 | if (size)
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237 | bb_copyfd_exact_size(zip_fd, dst_fd, size);
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238 | } else {
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239 | /* Method 8 - inflate */
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240 | inflate_unzip_result res;
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241 | if (inflate_unzip(&res, zip_header->formatted.cmpsize, zip_fd, dst_fd) < 0)
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242 | bb_error_msg_and_die("inflate error");
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243 | /* Validate decompression - crc */
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244 | if (zip_header->formatted.crc32 != (res.crc ^ 0xffffffffL)) {
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245 | bb_error_msg_and_die("crc error");
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246 | }
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247 | /* Validate decompression - size */
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248 | if (zip_header->formatted.ucmpsize != res.bytes_out) {
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249 | /* Don't die. Who knows, maybe len calculation
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250 | * was botched somewhere. After all, crc matched! */
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251 | bb_error_msg("bad length");
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252 | }
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253 | }
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254 | }
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255 |
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256 | int unzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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257 | int unzip_main(int argc, char **argv)
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258 | {
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259 | enum { O_PROMPT, O_NEVER, O_ALWAYS };
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260 |
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261 | zip_header_t zip_header;
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262 | smallint quiet = 0;
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263 | IF_NOT_DESKTOP(const) smallint verbose = 0;
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264 | smallint listing = 0;
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265 | smallint overwrite = O_PROMPT;
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266 | #if ENABLE_DESKTOP
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267 | uint32_t cdf_offset;
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268 | #endif
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269 | unsigned long total_usize;
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270 | unsigned long total_size;
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271 | unsigned total_entries;
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272 | int dst_fd = -1;
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273 | char *src_fn = NULL;
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274 | char *dst_fn = NULL;
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275 | llist_t *zaccept = NULL;
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276 | llist_t *zreject = NULL;
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277 | char *base_dir = NULL;
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278 | int i, opt;
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279 | int opt_range = 0;
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280 | char key_buf[80];
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281 | struct stat stat_buf;
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282 |
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283 | /* -q, -l and -v: UnZip 5.52 of 28 February 2005, by Info-ZIP:
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284 | *
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285 | * # /usr/bin/unzip -qq -v decompress_unlzma.i.zip
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286 | * 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i
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287 | * # /usr/bin/unzip -q -v decompress_unlzma.i.zip
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288 | * Length Method Size Ratio Date Time CRC-32 Name
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289 | * -------- ------ ------- ----- ---- ---- ------ ----
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290 | * 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i
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291 | * -------- ------- --- -------
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292 | * 204372 35278 83% 1 file
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293 | * # /usr/bin/unzip -v decompress_unlzma.i.zip
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294 | * Archive: decompress_unlzma.i.zip
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295 | * Length Method Size Ratio Date Time CRC-32 Name
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296 | * -------- ------ ------- ----- ---- ---- ------ ----
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297 | * 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i
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298 | * -------- ------- --- -------
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299 | * 204372 35278 83% 1 file
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300 | * # unzip -v decompress_unlzma.i.zip
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301 | * Archive: decompress_unlzma.i.zip
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302 | * Length Date Time Name
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303 | * -------- ---- ---- ----
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304 | * 204372 09-06-09 14:23 decompress_unlzma.i
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305 | * -------- -------
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306 | * 204372 1 files
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307 | * # /usr/bin/unzip -l -qq decompress_unlzma.i.zip
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308 | * 204372 09-06-09 14:23 decompress_unlzma.i
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309 | * # /usr/bin/unzip -l -q decompress_unlzma.i.zip
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310 | * Length Date Time Name
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311 | * -------- ---- ---- ----
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312 | * 204372 09-06-09 14:23 decompress_unlzma.i
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313 | * -------- -------
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314 | * 204372 1 file
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315 | * # /usr/bin/unzip -l decompress_unlzma.i.zip
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316 | * Archive: decompress_unlzma.i.zip
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317 | * Length Date Time Name
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318 | * -------- ---- ---- ----
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319 | * 204372 09-06-09 14:23 decompress_unlzma.i
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320 | * -------- -------
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321 | * 204372 1 file
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322 | */
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323 |
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324 | /* '-' makes getopt return 1 for non-options */
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325 | while ((opt = getopt(argc, argv, "-d:lnopqxv")) != -1) {
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326 | switch (opt_range) {
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327 | case 0: /* Options */
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328 | switch (opt) {
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329 | case 'l': /* List */
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330 | listing = 1;
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331 | break;
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332 |
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333 | case 'n': /* Never overwrite existing files */
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334 | overwrite = O_NEVER;
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335 | break;
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336 |
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337 | case 'o': /* Always overwrite existing files */
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338 | overwrite = O_ALWAYS;
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339 | break;
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340 |
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341 | case 'p': /* Extract files to stdout and fall through to set verbosity */
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342 | dst_fd = STDOUT_FILENO;
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343 |
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344 | case 'q': /* Be quiet */
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345 | quiet++;
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346 | break;
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347 |
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348 | case 'v': /* Verbose list */
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349 | IF_DESKTOP(verbose++;)
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350 | listing = 1;
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351 | break;
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352 |
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353 | case 1: /* The zip file */
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354 | /* +5: space for ".zip" and NUL */
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355 | src_fn = xmalloc(strlen(optarg) + 5);
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356 | strcpy(src_fn, optarg);
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357 | opt_range++;
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358 | break;
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359 |
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360 | default:
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361 | bb_show_usage();
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362 | }
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363 | break;
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364 |
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365 | case 1: /* Include files */
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366 | if (opt == 1) {
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367 | llist_add_to(&zaccept, optarg);
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368 | break;
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369 | }
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370 | if (opt == 'd') {
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371 | base_dir = optarg;
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372 | opt_range += 2;
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373 | break;
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374 | }
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375 | if (opt == 'x') {
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376 | opt_range++;
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377 | break;
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378 | }
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379 | bb_show_usage();
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380 |
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381 | case 2 : /* Exclude files */
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382 | if (opt == 1) {
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383 | llist_add_to(&zreject, optarg);
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384 | break;
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385 | }
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386 | if (opt == 'd') { /* Extract to base directory */
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387 | base_dir = optarg;
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388 | opt_range++;
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389 | break;
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390 | }
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391 | /* fall through */
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392 |
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393 | default:
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394 | bb_show_usage();
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395 | }
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396 | }
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397 |
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398 | if (src_fn == NULL) {
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399 | bb_show_usage();
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400 | }
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401 |
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402 | /* Open input file */
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403 | if (LONE_DASH(src_fn)) {
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404 | xdup2(STDIN_FILENO, zip_fd);
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405 | /* Cannot use prompt mode since zip data is arriving on STDIN */
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406 | if (overwrite == O_PROMPT)
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407 | overwrite = O_NEVER;
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408 | } else {
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409 | static const char extn[][5] = {"", ".zip", ".ZIP"};
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410 | int orig_src_fn_len = strlen(src_fn);
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411 | int src_fd = -1;
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412 |
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413 | for (i = 0; (i < 3) && (src_fd == -1); i++) {
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414 | strcpy(src_fn + orig_src_fn_len, extn[i]);
|
---|
415 | src_fd = open(src_fn, O_RDONLY);
|
---|
416 | }
|
---|
417 | if (src_fd == -1) {
|
---|
418 | src_fn[orig_src_fn_len] = '\0';
|
---|
419 | bb_error_msg_and_die("can't open %s, %s.zip, %s.ZIP", src_fn, src_fn, src_fn);
|
---|
420 | }
|
---|
421 | xmove_fd(src_fd, zip_fd);
|
---|
422 | }
|
---|
423 |
|
---|
424 | /* Change dir if necessary */
|
---|
425 | if (base_dir)
|
---|
426 | xchdir(base_dir);
|
---|
427 |
|
---|
428 | if (quiet <= 1) { /* not -qq */
|
---|
429 | if (quiet == 0)
|
---|
430 | printf("Archive: %s\n", src_fn);
|
---|
431 | if (listing) {
|
---|
432 | puts(verbose ?
|
---|
433 | " Length Method Size Ratio Date Time CRC-32 Name\n"
|
---|
434 | "-------- ------ ------- ----- ---- ---- ------ ----"
|
---|
435 | :
|
---|
436 | " Length Date Time Name\n"
|
---|
437 | " -------- ---- ---- ----"
|
---|
438 | );
|
---|
439 | }
|
---|
440 | }
|
---|
441 |
|
---|
442 | /* Example of an archive with one 0-byte long file named 'z'
|
---|
443 | * created by Zip 2.31 on Unix:
|
---|
444 | * 0000 [50 4b]03 04 0a 00 00 00 00 00 42 1a b8 3c 00 00 |PK........B..<..|
|
---|
445 | * sig........ vneed flags compr mtime mdate crc32>
|
---|
446 | * 0010 00 00 00 00 00 00 00 00 00 00 01 00 15 00 7a 55 |..............zU|
|
---|
447 | * >..... csize...... usize...... fnlen exlen fn ex>
|
---|
448 | * 0020 54 09 00 03 cc d3 f9 4b cc d3 f9 4b 55 78 04 00 |T......K...KUx..|
|
---|
449 | * >tra_field......................................
|
---|
450 | * 0030 00 00 00 00[50 4b]01 02 17 03 0a 00 00 00 00 00 |....PK..........|
|
---|
451 | * ........... sig........ vmade vneed flags compr
|
---|
452 | * 0040 42 1a b8 3c 00 00 00 00 00 00 00 00 00 00 00 00 |B..<............|
|
---|
453 | * mtime mdate crc32...... csize...... usize......
|
---|
454 | * 0050 01 00 0d 00 00 00 00 00 00 00 00 00 a4 81 00 00 |................|
|
---|
455 | * fnlen exlen clen. dnum. iattr eattr...... relofs> (eattr = rw-r--r--)
|
---|
456 | * 0060 00 00 7a 55 54 05 00 03 cc d3 f9 4b 55 78 00 00 |..zUT......KUx..|
|
---|
457 | * >..... fn extra_field...........................
|
---|
458 | * 0070 [50 4b]05 06 00 00 00 00 01 00 01 00 3c 00 00 00 |PK..........<...|
|
---|
459 | * 0080 34 00 00 00 00 00 |4.....|
|
---|
460 | */
|
---|
461 | total_usize = 0;
|
---|
462 | total_size = 0;
|
---|
463 | total_entries = 0;
|
---|
464 | #if ENABLE_DESKTOP
|
---|
465 | cdf_offset = 0;
|
---|
466 | #endif
|
---|
467 | while (1) {
|
---|
468 | uint32_t magic;
|
---|
469 | mode_t dir_mode = 0777;
|
---|
470 | #if ENABLE_DESKTOP
|
---|
471 | mode_t file_mode = 0666;
|
---|
472 | #endif
|
---|
473 |
|
---|
474 | /* Check magic number */
|
---|
475 | xread(zip_fd, &magic, 4);
|
---|
476 | /* Central directory? It's at the end, so exit */
|
---|
477 | if (magic == ZIP_CDF_MAGIC)
|
---|
478 | break;
|
---|
479 | #if ENABLE_DESKTOP
|
---|
480 | /* Data descriptor? It was a streaming file, go on */
|
---|
481 | if (magic == ZIP_DD_MAGIC) {
|
---|
482 | /* skip over duplicate crc32, cmpsize and ucmpsize */
|
---|
483 | unzip_skip(3 * 4);
|
---|
484 | continue;
|
---|
485 | }
|
---|
486 | #endif
|
---|
487 | if (magic != ZIP_FILEHEADER_MAGIC)
|
---|
488 | bb_error_msg_and_die("invalid zip magic %08X", (int)magic);
|
---|
489 |
|
---|
490 | /* Read the file header */
|
---|
491 | xread(zip_fd, zip_header.raw, ZIP_HEADER_LEN);
|
---|
492 | FIX_ENDIANNESS_ZIP(zip_header);
|
---|
493 | if ((zip_header.formatted.method != 0) && (zip_header.formatted.method != 8)) {
|
---|
494 | bb_error_msg_and_die("unsupported method %d", zip_header.formatted.method);
|
---|
495 | }
|
---|
496 | #if !ENABLE_DESKTOP
|
---|
497 | if (zip_header.formatted.zip_flags & SWAP_LE16(0x0009)) {
|
---|
498 | bb_error_msg_and_die("zip flags 1 and 8 are not supported");
|
---|
499 | }
|
---|
500 | #else
|
---|
501 | if (zip_header.formatted.zip_flags & SWAP_LE16(0x0001)) {
|
---|
502 | /* 0x0001 - encrypted */
|
---|
503 | bb_error_msg_and_die("zip flag 1 (encryption) is not supported");
|
---|
504 | }
|
---|
505 |
|
---|
506 | {
|
---|
507 | cdf_header_t cdf_header;
|
---|
508 | cdf_offset = read_next_cdf(cdf_offset, &cdf_header);
|
---|
509 | if (zip_header.formatted.zip_flags & SWAP_LE16(0x0008)) {
|
---|
510 | /* 0x0008 - streaming. [u]cmpsize can be reliably gotten
|
---|
511 | * only from Central Directory. See unzip_doc.txt */
|
---|
512 | zip_header.formatted.crc32 = cdf_header.formatted.crc32;
|
---|
513 | zip_header.formatted.cmpsize = cdf_header.formatted.cmpsize;
|
---|
514 | zip_header.formatted.ucmpsize = cdf_header.formatted.ucmpsize;
|
---|
515 | }
|
---|
516 | if ((cdf_header.formatted.version_made_by >> 8) == 3) {
|
---|
517 | /* this archive is created on Unix */
|
---|
518 | dir_mode = file_mode = (cdf_header.formatted.external_file_attributes >> 16);
|
---|
519 | }
|
---|
520 | }
|
---|
521 | #endif
|
---|
522 |
|
---|
523 | /* Read filename */
|
---|
524 | free(dst_fn);
|
---|
525 | dst_fn = xzalloc(zip_header.formatted.filename_len + 1);
|
---|
526 | xread(zip_fd, dst_fn, zip_header.formatted.filename_len);
|
---|
527 |
|
---|
528 | /* Skip extra header bytes */
|
---|
529 | unzip_skip(zip_header.formatted.extra_len);
|
---|
530 |
|
---|
531 | /* Filter zip entries */
|
---|
532 | if (find_list_entry(zreject, dst_fn)
|
---|
533 | || (zaccept && !find_list_entry(zaccept, dst_fn))
|
---|
534 | ) { /* Skip entry */
|
---|
535 | i = 'n';
|
---|
536 |
|
---|
537 | } else { /* Extract entry */
|
---|
538 | if (listing) { /* List entry */
|
---|
539 | unsigned dostime = zip_header.formatted.modtime | (zip_header.formatted.moddate << 16);
|
---|
540 | if (!verbose) {
|
---|
541 | // " Length Date Time Name\n"
|
---|
542 | // " -------- ---- ---- ----"
|
---|
543 | printf( "%9u %02u-%02u-%02u %02u:%02u %s\n",
|
---|
544 | (unsigned)zip_header.formatted.ucmpsize,
|
---|
545 | (dostime & 0x01e00000) >> 21,
|
---|
546 | (dostime & 0x001f0000) >> 16,
|
---|
547 | (((dostime & 0xfe000000) >> 25) + 1980) % 100,
|
---|
548 | (dostime & 0x0000f800) >> 11,
|
---|
549 | (dostime & 0x000007e0) >> 5,
|
---|
550 | dst_fn);
|
---|
551 | total_usize += zip_header.formatted.ucmpsize;
|
---|
552 | } else {
|
---|
553 | unsigned long percents = zip_header.formatted.ucmpsize - zip_header.formatted.cmpsize;
|
---|
554 | percents = percents * 100;
|
---|
555 | if (zip_header.formatted.ucmpsize)
|
---|
556 | percents /= zip_header.formatted.ucmpsize;
|
---|
557 | // " Length Method Size Ratio Date Time CRC-32 Name\n"
|
---|
558 | // "-------- ------ ------- ----- ---- ---- ------ ----"
|
---|
559 | printf( "%8u Defl:N" "%9u%4u%% %02u-%02u-%02u %02u:%02u %08x %s\n",
|
---|
560 | (unsigned)zip_header.formatted.ucmpsize,
|
---|
561 | (unsigned)zip_header.formatted.cmpsize,
|
---|
562 | (unsigned)percents,
|
---|
563 | (dostime & 0x01e00000) >> 21,
|
---|
564 | (dostime & 0x001f0000) >> 16,
|
---|
565 | (((dostime & 0xfe000000) >> 25) + 1980) % 100,
|
---|
566 | (dostime & 0x0000f800) >> 11,
|
---|
567 | (dostime & 0x000007e0) >> 5,
|
---|
568 | zip_header.formatted.crc32,
|
---|
569 | dst_fn);
|
---|
570 | total_usize += zip_header.formatted.ucmpsize;
|
---|
571 | total_size += zip_header.formatted.cmpsize;
|
---|
572 | }
|
---|
573 | i = 'n';
|
---|
574 | } else if (dst_fd == STDOUT_FILENO) { /* Extracting to STDOUT */
|
---|
575 | i = -1;
|
---|
576 | } else if (last_char_is(dst_fn, '/')) { /* Extract directory */
|
---|
577 | if (stat(dst_fn, &stat_buf) == -1) {
|
---|
578 | if (errno != ENOENT) {
|
---|
579 | bb_perror_msg_and_die("can't stat '%s'", dst_fn);
|
---|
580 | }
|
---|
581 | if (!quiet) {
|
---|
582 | printf(" creating: %s\n", dst_fn);
|
---|
583 | }
|
---|
584 | unzip_create_leading_dirs(dst_fn);
|
---|
585 | if (bb_make_directory(dst_fn, dir_mode, 0)) {
|
---|
586 | bb_error_msg_and_die("exiting");
|
---|
587 | }
|
---|
588 | } else {
|
---|
589 | if (!S_ISDIR(stat_buf.st_mode)) {
|
---|
590 | bb_error_msg_and_die("'%s' exists but is not directory", dst_fn);
|
---|
591 | }
|
---|
592 | }
|
---|
593 | i = 'n';
|
---|
594 |
|
---|
595 | } else { /* Extract file */
|
---|
596 | check_file:
|
---|
597 | if (stat(dst_fn, &stat_buf) == -1) { /* File does not exist */
|
---|
598 | if (errno != ENOENT) {
|
---|
599 | bb_perror_msg_and_die("can't stat '%s'", dst_fn);
|
---|
600 | }
|
---|
601 | i = 'y';
|
---|
602 | } else { /* File already exists */
|
---|
603 | if (overwrite == O_NEVER) {
|
---|
604 | i = 'n';
|
---|
605 | } else if (S_ISREG(stat_buf.st_mode)) { /* File is regular file */
|
---|
606 | if (overwrite == O_ALWAYS) {
|
---|
607 | i = 'y';
|
---|
608 | } else {
|
---|
609 | printf("replace %s? [y]es, [n]o, [A]ll, [N]one, [r]ename: ", dst_fn);
|
---|
610 | if (!fgets(key_buf, sizeof(key_buf), stdin)) {
|
---|
611 | bb_perror_msg_and_die("can't read input");
|
---|
612 | }
|
---|
613 | i = key_buf[0];
|
---|
614 | }
|
---|
615 | } else { /* File is not regular file */
|
---|
616 | bb_error_msg_and_die("'%s' exists but is not regular file", dst_fn);
|
---|
617 | }
|
---|
618 | }
|
---|
619 | }
|
---|
620 | }
|
---|
621 |
|
---|
622 | switch (i) {
|
---|
623 | case 'A':
|
---|
624 | overwrite = O_ALWAYS;
|
---|
625 | case 'y': /* Open file and fall into unzip */
|
---|
626 | unzip_create_leading_dirs(dst_fn);
|
---|
627 | #if ENABLE_DESKTOP
|
---|
628 | dst_fd = xopen3(dst_fn, O_WRONLY | O_CREAT | O_TRUNC, file_mode);
|
---|
629 | #else
|
---|
630 | dst_fd = xopen(dst_fn, O_WRONLY | O_CREAT | O_TRUNC);
|
---|
631 | #endif
|
---|
632 | case -1: /* Unzip */
|
---|
633 | if (!quiet) {
|
---|
634 | printf(" inflating: %s\n", dst_fn);
|
---|
635 | }
|
---|
636 | unzip_extract(&zip_header, dst_fd);
|
---|
637 | if (dst_fd != STDOUT_FILENO) {
|
---|
638 | /* closing STDOUT is potentially bad for future business */
|
---|
639 | close(dst_fd);
|
---|
640 | }
|
---|
641 | break;
|
---|
642 |
|
---|
643 | case 'N':
|
---|
644 | overwrite = O_NEVER;
|
---|
645 | case 'n':
|
---|
646 | /* Skip entry data */
|
---|
647 | unzip_skip(zip_header.formatted.cmpsize);
|
---|
648 | break;
|
---|
649 |
|
---|
650 | case 'r':
|
---|
651 | /* Prompt for new name */
|
---|
652 | printf("new name: ");
|
---|
653 | if (!fgets(key_buf, sizeof(key_buf), stdin)) {
|
---|
654 | bb_perror_msg_and_die("can't read input");
|
---|
655 | }
|
---|
656 | free(dst_fn);
|
---|
657 | dst_fn = xstrdup(key_buf);
|
---|
658 | chomp(dst_fn);
|
---|
659 | goto check_file;
|
---|
660 |
|
---|
661 | default:
|
---|
662 | printf("error: invalid response [%c]\n", (char)i);
|
---|
663 | goto check_file;
|
---|
664 | }
|
---|
665 |
|
---|
666 | total_entries++;
|
---|
667 | }
|
---|
668 |
|
---|
669 | if (listing && quiet <= 1) {
|
---|
670 | if (!verbose) {
|
---|
671 | // " Length Date Time Name\n"
|
---|
672 | // " -------- ---- ---- ----"
|
---|
673 | printf( " -------- -------\n"
|
---|
674 | "%9lu" " %u files\n",
|
---|
675 | total_usize, total_entries);
|
---|
676 | } else {
|
---|
677 | unsigned long percents = total_usize - total_size;
|
---|
678 | percents = percents * 100;
|
---|
679 | if (total_usize)
|
---|
680 | percents /= total_usize;
|
---|
681 | // " Length Method Size Ratio Date Time CRC-32 Name\n"
|
---|
682 | // "-------- ------ ------- ----- ---- ---- ------ ----"
|
---|
683 | printf( "-------- ------- --- -------\n"
|
---|
684 | "%8lu" "%17lu%4u%% %u files\n",
|
---|
685 | total_usize, total_size, (unsigned)percents,
|
---|
686 | total_entries);
|
---|
687 | }
|
---|
688 | }
|
---|
689 |
|
---|
690 | return 0;
|
---|
691 | }
|
---|