1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * mini dpkg implementation for busybox.
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4 | * this is not meant as a replacement for dpkg
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5 | *
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6 | * written by glenn mcgrath with the help of others
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7 | * copyright (c) 2001 by glenn mcgrath
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8 | *
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9 | * parts of the version comparison code is plucked from the real dpkg
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10 | * application which is licensed GPLv2 and
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11 | * copyright (c) 1995 Ian Jackson <ian@chiark.greenend.org.uk>
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12 | *
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13 | * started life as a busybox implementation of udpkg
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14 | *
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15 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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16 | */
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17 |
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18 | /*
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19 | * known difference between busybox dpkg and the official dpkg that i don't
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20 | * consider important, its worth keeping a note of differences anyway, just to
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21 | * make it easier to maintain.
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22 | * - the first value for the confflile: field isnt placed on a new line.
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23 | * - when installing a package the status: field is placed at the end of the
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24 | * section, rather than just after the package: field.
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25 | *
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26 | * bugs that need to be fixed
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27 | * - (unknown, please let me know when you find any)
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28 | *
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29 | */
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30 |
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31 | //usage:#define dpkg_trivial_usage
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32 | //usage: "[-ilCPru] [-F OPT] PACKAGE"
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33 | //usage:#define dpkg_full_usage "\n\n"
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34 | //usage: "Install, remove and manage Debian packages\n"
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35 | //usage: IF_LONG_OPTS(
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36 | //usage: "\n -i,--install Install the package"
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37 | //usage: "\n -l,--list List of installed packages"
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38 | //usage: "\n --configure Configure an unpackaged package"
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39 | //usage: "\n -P,--purge Purge all files of a package"
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40 | //usage: "\n -r,--remove Remove all but the configuration files for a package"
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41 | //usage: "\n --unpack Unpack a package, but don't configure it"
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42 | //usage: "\n --force-depends Ignore dependency problems"
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43 | //usage: "\n --force-confnew Overwrite existing config files when installing"
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44 | //usage: "\n --force-confold Keep old config files when installing"
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45 | //usage: )
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46 | //usage: IF_NOT_LONG_OPTS(
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47 | //usage: "\n -i Install the package"
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48 | //usage: "\n -l List of installed packages"
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49 | //usage: "\n -C Configure an unpackaged package"
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50 | //usage: "\n -P Purge all files of a package"
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51 | //usage: "\n -r Remove all but the configuration files for a package"
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52 | //usage: "\n -u Unpack a package, but don't configure it"
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53 | //usage: "\n -F depends Ignore dependency problems"
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54 | //usage: "\n -F confnew Overwrite existing config files when installing"
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55 | //usage: "\n -F confold Keep old config files when installing"
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56 | //usage: )
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57 |
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58 | #include "libbb.h"
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59 | #include <fnmatch.h>
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60 | #include "bb_archive.h"
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61 |
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62 | /* note: if you vary hash_prime sizes be aware,
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63 | * 1) tweaking these will have a big effect on how much memory this program uses.
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64 | * 2) for computational efficiency these hash tables should be at least 20%
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65 | * larger than the maximum number of elements stored in it.
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66 | * 3) all _hash_prime's must be a prime number or chaos is assured, if your looking
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67 | * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt
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68 | * 4) if you go bigger than 15 bits you may get into trouble (untested) as its
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69 | * sometimes cast to an unsigned, if you go to 16 bit you will overlap
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70 | * int's and chaos is assured, 16381 is the max prime for 14 bit field
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71 | */
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72 |
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73 | /* NAME_HASH_PRIME, Stores package names and versions,
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74 | * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME,
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75 | * as there a lot of duplicate version numbers */
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76 | #define NAME_HASH_PRIME 16381
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77 |
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78 | /* PACKAGE_HASH_PRIME, Maximum number of unique packages,
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79 | * It must not be smaller than STATUS_HASH_PRIME,
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80 | * Currently only packages from status_hashtable are stored in here, but in
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81 | * future this may be used to store packages not only from a status file,
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82 | * but an available_hashtable, and even multiple packages files.
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83 | * Package can be stored more than once if they have different versions.
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84 | * e.g. The same package may have different versions in the status file
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85 | * and available file */
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86 | #define PACKAGE_HASH_PRIME 10007
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87 | typedef struct edge_s {
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88 | unsigned operator:4; /* was:3 */
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89 | unsigned type:4;
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90 | unsigned name:16; /* was:14 */
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91 | unsigned version:16; /* was:14 */
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92 | } edge_t;
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93 |
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94 | typedef struct common_node_s {
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95 | unsigned name:16; /* was:14 */
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96 | unsigned version:16; /* was:14 */
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97 | unsigned num_of_edges:16; /* was:14 */
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98 | edge_t **edge;
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99 | } common_node_t;
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100 |
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101 | /* Currently it doesnt store packages that have state-status of not-installed
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102 | * So it only really has to be the size of the maximum number of packages
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103 | * likely to be installed at any one time, so there is a bit of leeway here */
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104 | #define STATUS_HASH_PRIME 8191
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105 | typedef struct status_node_s {
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106 | unsigned package:16; /* was:14 */ /* has to fit PACKAGE_HASH_PRIME */
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107 | unsigned status:16; /* was:14 */ /* has to fit STATUS_HASH_PRIME */
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108 | } status_node_t;
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109 |
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110 |
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111 | /* Globals */
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112 | struct globals {
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113 | char *name_hashtable[NAME_HASH_PRIME + 1];
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114 | common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
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115 | status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
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116 | };
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117 | #define G (*ptr_to_globals)
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118 | #define name_hashtable (G.name_hashtable )
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119 | #define package_hashtable (G.package_hashtable)
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120 | #define status_hashtable (G.status_hashtable )
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121 | #define INIT_G() do { \
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122 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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123 | } while (0)
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124 |
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125 |
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126 | /* Even numbers are for 'extras', like ored dependencies or null */
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127 | enum edge_type_e {
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128 | EDGE_NULL = 0,
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129 | EDGE_PRE_DEPENDS = 1,
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130 | EDGE_OR_PRE_DEPENDS = 2,
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131 | EDGE_DEPENDS = 3,
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132 | EDGE_OR_DEPENDS = 4,
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133 | EDGE_REPLACES = 5,
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134 | EDGE_PROVIDES = 7,
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135 | EDGE_CONFLICTS = 9,
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136 | EDGE_SUGGESTS = 11,
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137 | EDGE_RECOMMENDS = 13,
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138 | EDGE_ENHANCES = 15
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139 | };
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140 | enum operator_e {
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141 | VER_NULL = 0,
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142 | VER_EQUAL = 1,
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143 | VER_LESS = 2,
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144 | VER_LESS_EQUAL = 3,
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145 | VER_MORE = 4,
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146 | VER_MORE_EQUAL = 5,
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147 | VER_ANY = 6
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148 | };
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149 |
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150 | typedef struct deb_file_s {
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151 | char *control_file;
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152 | char *filename;
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153 | unsigned package:16; /* was:14 */
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154 | } deb_file_t;
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155 |
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156 |
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157 | static void make_hash(const char *key, unsigned *start, unsigned *decrement, const int hash_prime)
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158 | {
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159 | unsigned long hash_num = key[0];
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160 | int len = strlen(key);
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161 | int i;
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162 |
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163 | /* Maybe i should have uses a "proper" hashing algorithm here instead
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164 | * of making one up myself, seems to be working ok though. */
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165 | for (i = 1; i < len; i++) {
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166 | /* shifts the ascii based value and adds it to previous value
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167 | * shift amount is mod 24 because long int is 32 bit and data
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168 | * to be shifted is 8, don't want to shift data to where it has
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169 | * no effect */
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170 | hash_num += (key[i] + key[i-1]) << ((key[i] * i) % 24);
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171 | }
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172 | *start = (unsigned) hash_num % hash_prime;
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173 | *decrement = (unsigned) 1 + (hash_num % (hash_prime - 1));
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174 | }
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175 |
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176 | /* this adds the key to the hash table */
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177 | static int search_name_hashtable(const char *key)
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178 | {
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179 | unsigned probe_address;
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180 | unsigned probe_decrement;
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181 |
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182 | make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME);
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183 | while (name_hashtable[probe_address] != NULL) {
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184 | if (strcmp(name_hashtable[probe_address], key) == 0) {
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185 | return probe_address;
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186 | }
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187 | probe_address -= probe_decrement;
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188 | if ((int)probe_address < 0) {
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189 | probe_address += NAME_HASH_PRIME;
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190 | }
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191 | }
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192 | name_hashtable[probe_address] = xstrdup(key);
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193 | return probe_address;
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194 | }
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195 |
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196 | /* this DOESNT add the key to the hashtable
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197 | * TODO make it consistent with search_name_hashtable
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198 | */
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199 | static unsigned search_status_hashtable(const char *key)
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200 | {
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201 | unsigned probe_address;
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202 | unsigned probe_decrement;
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203 |
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204 | make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME);
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205 | while (status_hashtable[probe_address] != NULL) {
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206 | if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) {
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207 | break;
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208 | }
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209 | probe_address -= probe_decrement;
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210 | if ((int)probe_address < 0) {
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211 | probe_address += STATUS_HASH_PRIME;
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212 | }
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213 | }
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214 | return probe_address;
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215 | }
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216 |
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217 | static int order(char x)
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218 | {
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219 | return (x == '~' ? -1
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220 | : x == '\0' ? 0
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221 | : isdigit(x) ? 0
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222 | : isalpha(x) ? x
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223 | : (unsigned char)x + 256
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224 | );
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225 | }
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226 |
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227 | /* This code is taken from dpkg and modified slightly to work with busybox */
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228 | static int version_compare_part(const char *val, const char *ref)
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229 | {
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230 | if (!val) val = "";
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231 | if (!ref) ref = "";
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232 |
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233 | while (*val || *ref) {
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234 | int first_diff;
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235 |
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236 | while ((*val && !isdigit(*val)) || (*ref && !isdigit(*ref))) {
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237 | int vc = order(*val);
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238 | int rc = order(*ref);
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239 | if (vc != rc)
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240 | return vc - rc;
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241 | val++;
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242 | ref++;
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243 | }
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244 |
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245 | while (*val == '0')
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246 | val++;
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247 | while (*ref == '0')
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248 | ref++;
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249 |
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250 | first_diff = 0;
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251 | while (isdigit(*val) && isdigit(*ref)) {
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252 | if (first_diff == 0)
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253 | first_diff = *val - *ref;
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254 | val++;
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255 | ref++;
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256 | }
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257 | if (isdigit(*val))
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258 | return 1;
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259 | if (isdigit(*ref))
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260 | return -1;
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261 | if (first_diff)
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262 | return first_diff;
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263 | }
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264 | return 0;
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265 | }
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266 |
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267 | /* if ver1 < ver2 return -1,
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268 | * if ver1 = ver2 return 0,
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269 | * if ver1 > ver2 return 1,
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270 | */
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271 | static int version_compare(const unsigned ver1, const unsigned ver2)
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272 | {
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273 | char *ch_ver1 = name_hashtable[ver1];
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274 | char *ch_ver2 = name_hashtable[ver2];
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275 | unsigned epoch1 = 0, epoch2 = 0;
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276 | char *colon;
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277 | char *deb_ver1, *deb_ver2;
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278 | char *upstream_ver1;
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279 | char *upstream_ver2;
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280 | int result;
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281 |
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282 | /* Compare epoch */
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283 | colon = strchr(ch_ver1, ':');
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284 | if (colon) {
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285 | epoch1 = atoi(ch_ver1);
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286 | ch_ver1 = colon + 1;
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287 | }
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288 | colon = strchr(ch_ver2, ':');
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289 | if (colon) {
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290 | epoch2 = atoi(ch_ver2);
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291 | ch_ver2 = colon + 1;
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292 | }
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293 | if (epoch1 < epoch2) {
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294 | return -1;
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295 | }
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296 | if (epoch1 > epoch2) {
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297 | return 1;
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298 | }
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299 |
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300 | /* Compare upstream version */
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301 | upstream_ver1 = xstrdup(ch_ver1);
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302 | upstream_ver2 = xstrdup(ch_ver2);
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303 |
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304 | /* Chop off debian version, and store for later use */
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305 | deb_ver1 = strrchr(upstream_ver1, '-');
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306 | deb_ver2 = strrchr(upstream_ver2, '-');
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307 | if (deb_ver1) {
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308 | *deb_ver1++ = '\0';
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309 | }
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310 | if (deb_ver2) {
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311 | *deb_ver2++ = '\0';
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312 | }
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313 | result = version_compare_part(upstream_ver1, upstream_ver2);
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314 | if (result == 0) {
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315 | /* Compare debian versions */
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316 | result = version_compare_part(deb_ver1, deb_ver2);
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317 | }
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318 |
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319 | free(upstream_ver1);
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320 | free(upstream_ver2);
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321 | return result;
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322 | }
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323 |
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324 | static int test_version(const unsigned version1, const unsigned version2, const unsigned operator)
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325 | {
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326 | const int version_result = version_compare(version1, version2);
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327 | switch (operator) {
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328 | case VER_ANY:
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329 | return TRUE;
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330 | case VER_EQUAL:
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331 | return (version_result == 0);
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332 | case VER_LESS:
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333 | return (version_result < 0);
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334 | case VER_LESS_EQUAL:
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335 | return (version_result <= 0);
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336 | case VER_MORE:
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337 | return (version_result > 0);
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338 | case VER_MORE_EQUAL:
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339 | return (version_result >= 0);
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340 | }
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341 | return FALSE;
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342 | }
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343 |
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344 | static int search_package_hashtable(const unsigned name, const unsigned version, const unsigned operator)
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345 | {
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346 | unsigned probe_address;
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347 | unsigned probe_decrement;
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348 |
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349 | make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME);
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350 | while (package_hashtable[probe_address] != NULL) {
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351 | if (package_hashtable[probe_address]->name == name) {
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352 | if (operator == VER_ANY) {
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353 | return probe_address;
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354 | }
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355 | if (test_version(package_hashtable[probe_address]->version, version, operator)) {
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356 | return probe_address;
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357 | }
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358 | }
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359 | probe_address -= probe_decrement;
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360 | if ((int)probe_address < 0) {
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361 | probe_address += PACKAGE_HASH_PRIME;
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362 | }
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363 | }
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364 | return probe_address;
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365 | }
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366 |
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367 | /*
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368 | * This function searches through the entire package_hashtable looking
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369 | * for a package which provides "needle". It returns the index into
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370 | * the package_hashtable for the providing package.
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371 | *
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372 | * needle is the index into name_hashtable of the package we are
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373 | * looking for.
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374 | *
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375 | * start_at is the index in the package_hashtable to start looking
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376 | * at. If start_at is -1 then start at the beginning. This is to allow
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377 | * for repeated searches since more than one package might provide
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378 | * needle.
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379 | *
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380 | * FIXME: I don't think this is very efficient, but I thought I'd keep
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381 | * it simple for now until it proves to be a problem.
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382 | */
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383 | static int search_for_provides(int needle, int start_at)
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384 | {
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385 | int i, j;
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386 | common_node_t *p;
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387 | for (i = start_at + 1; i < PACKAGE_HASH_PRIME; i++) {
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388 | p = package_hashtable[i];
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389 | if (p == NULL)
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390 | continue;
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391 | for (j = 0; j < p->num_of_edges; j++)
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392 | if (p->edge[j]->type == EDGE_PROVIDES && p->edge[j]->name == needle)
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393 | return i;
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394 | }
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395 | return -1;
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396 | }
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397 |
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398 | /*
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399 | * Add an edge to a node
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400 | */
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401 | static void add_edge_to_node(common_node_t *node, edge_t *edge)
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402 | {
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403 | node->edge = xrealloc_vector(node->edge, 2, node->num_of_edges);
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404 | node->edge[node->num_of_edges++] = edge;
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405 | }
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406 |
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407 | /*
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408 | * Create one new node and one new edge for every dependency.
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409 | *
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410 | * Dependencies which contain multiple alternatives are represented as
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411 | * an EDGE_OR_PRE_DEPENDS or EDGE_OR_DEPENDS node, followed by a
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412 | * number of EDGE_PRE_DEPENDS or EDGE_DEPENDS nodes. The name field of
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413 | * the OR edge contains the full dependency string while the version
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414 | * field contains the number of EDGE nodes which follow as part of
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415 | * this alternative.
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416 | */
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417 | static void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned edge_type)
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418 | {
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419 | char *line = xstrdup(whole_line);
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420 | char *line2;
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421 | char *line_ptr1 = NULL;
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422 | char *line_ptr2 = NULL;
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423 | char *field;
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424 | char *field2;
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425 | char *version;
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426 | edge_t *edge;
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427 | edge_t *or_edge;
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428 | int offset_ch;
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429 |
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430 | field = strtok_r(line, ",", &line_ptr1);
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431 | do {
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432 | /* skip leading spaces */
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433 | field += strspn(field, " ");
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434 | line2 = xstrdup(field);
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435 | field2 = strtok_r(line2, "|", &line_ptr2);
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436 | or_edge = NULL;
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437 | if ((edge_type == EDGE_DEPENDS || edge_type == EDGE_PRE_DEPENDS)
|
---|
438 | && (strcmp(field, field2) != 0)
|
---|
439 | ) {
|
---|
440 | or_edge = xzalloc(sizeof(edge_t));
|
---|
441 | or_edge->type = edge_type + 1;
|
---|
442 | or_edge->name = search_name_hashtable(field);
|
---|
443 | //or_edge->version = 0; // tracks the number of alternatives
|
---|
444 | add_edge_to_node(parent_node, or_edge);
|
---|
445 | }
|
---|
446 |
|
---|
447 | do {
|
---|
448 | edge = xmalloc(sizeof(edge_t));
|
---|
449 | edge->type = edge_type;
|
---|
450 |
|
---|
451 | /* Skip any extra leading spaces */
|
---|
452 | field2 += strspn(field2, " ");
|
---|
453 |
|
---|
454 | /* Get dependency version info */
|
---|
455 | version = strchr(field2, '(');
|
---|
456 | if (version == NULL) {
|
---|
457 | edge->operator = VER_ANY;
|
---|
458 | /* Get the versions hash number, adding it if the number isnt already in there */
|
---|
459 | edge->version = search_name_hashtable("ANY");
|
---|
460 | } else {
|
---|
461 | /* Skip leading ' ' or '(' */
|
---|
462 | version += strspn(version, " (");
|
---|
463 | /* Calculate length of any operator characters */
|
---|
464 | offset_ch = strspn(version, "<=>");
|
---|
465 | /* Determine operator */
|
---|
466 | if (offset_ch > 0) {
|
---|
467 | if (strncmp(version, "=", offset_ch) == 0) {
|
---|
468 | edge->operator = VER_EQUAL;
|
---|
469 | } else if (strncmp(version, "<<", offset_ch) == 0) {
|
---|
470 | edge->operator = VER_LESS;
|
---|
471 | } else if (strncmp(version, "<=", offset_ch) == 0) {
|
---|
472 | edge->operator = VER_LESS_EQUAL;
|
---|
473 | } else if (strncmp(version, ">>", offset_ch) == 0) {
|
---|
474 | edge->operator = VER_MORE;
|
---|
475 | } else if (strncmp(version, ">=", offset_ch) == 0) {
|
---|
476 | edge->operator = VER_MORE_EQUAL;
|
---|
477 | } else {
|
---|
478 | bb_error_msg_and_die("illegal operator");
|
---|
479 | }
|
---|
480 | }
|
---|
481 | /* skip to start of version numbers */
|
---|
482 | version += offset_ch;
|
---|
483 | version += strspn(version, " ");
|
---|
484 |
|
---|
485 | /* Truncate version at trailing ' ' or ')' */
|
---|
486 | version[strcspn(version, " )")] = '\0';
|
---|
487 | /* Get the versions hash number, adding it if the number isnt already in there */
|
---|
488 | edge->version = search_name_hashtable(version);
|
---|
489 | }
|
---|
490 |
|
---|
491 | /* Get the dependency name */
|
---|
492 | field2[strcspn(field2, " (")] = '\0';
|
---|
493 | edge->name = search_name_hashtable(field2);
|
---|
494 |
|
---|
495 | if (or_edge)
|
---|
496 | or_edge->version++;
|
---|
497 |
|
---|
498 | add_edge_to_node(parent_node, edge);
|
---|
499 | field2 = strtok_r(NULL, "|", &line_ptr2);
|
---|
500 | } while (field2 != NULL);
|
---|
501 |
|
---|
502 | free(line2);
|
---|
503 | field = strtok_r(NULL, ",", &line_ptr1);
|
---|
504 | } while (field != NULL);
|
---|
505 |
|
---|
506 | free(line);
|
---|
507 | }
|
---|
508 |
|
---|
509 | static void free_package(common_node_t *node)
|
---|
510 | {
|
---|
511 | unsigned i;
|
---|
512 | if (node) {
|
---|
513 | for (i = 0; i < node->num_of_edges; i++) {
|
---|
514 | free(node->edge[i]);
|
---|
515 | }
|
---|
516 | free(node->edge);
|
---|
517 | free(node);
|
---|
518 | }
|
---|
519 | }
|
---|
520 |
|
---|
521 | /*
|
---|
522 | * Gets the next package field from package_buffer, separated into the field name
|
---|
523 | * and field value, it returns the int offset to the first character of the next field
|
---|
524 | */
|
---|
525 | static int read_package_field(const char *package_buffer, char **field_name, char **field_value)
|
---|
526 | {
|
---|
527 | int offset_name_start = 0;
|
---|
528 | int offset_name_end = 0;
|
---|
529 | int offset_value_start = 0;
|
---|
530 | int offset_value_end = 0;
|
---|
531 | int offset = 0;
|
---|
532 | int next_offset;
|
---|
533 | int name_length;
|
---|
534 | int value_length;
|
---|
535 | int exit_flag = FALSE;
|
---|
536 |
|
---|
537 | if (package_buffer == NULL) {
|
---|
538 | *field_name = NULL;
|
---|
539 | *field_value = NULL;
|
---|
540 | return -1;
|
---|
541 | }
|
---|
542 | while (1) {
|
---|
543 | next_offset = offset + 1;
|
---|
544 | switch (package_buffer[offset]) {
|
---|
545 | case '\0':
|
---|
546 | exit_flag = TRUE;
|
---|
547 | break;
|
---|
548 | case ':':
|
---|
549 | if (offset_name_end == 0) {
|
---|
550 | offset_name_end = offset;
|
---|
551 | offset_value_start = next_offset;
|
---|
552 | }
|
---|
553 | /* TODO: Name might still have trailing spaces if ':' isnt
|
---|
554 | * immediately after name */
|
---|
555 | break;
|
---|
556 | case '\n':
|
---|
557 | /* TODO: The char next_offset may be out of bounds */
|
---|
558 | if (package_buffer[next_offset] != ' ') {
|
---|
559 | exit_flag = TRUE;
|
---|
560 | break;
|
---|
561 | }
|
---|
562 | case '\t':
|
---|
563 | case ' ':
|
---|
564 | /* increment the value start point if its a just filler */
|
---|
565 | if (offset_name_start == offset) {
|
---|
566 | offset_name_start++;
|
---|
567 | }
|
---|
568 | if (offset_value_start == offset) {
|
---|
569 | offset_value_start++;
|
---|
570 | }
|
---|
571 | break;
|
---|
572 | }
|
---|
573 | if (exit_flag) {
|
---|
574 | /* Check that the names are valid */
|
---|
575 | offset_value_end = offset;
|
---|
576 | name_length = offset_name_end - offset_name_start;
|
---|
577 | value_length = offset_value_end - offset_value_start;
|
---|
578 | if (name_length == 0) {
|
---|
579 | break;
|
---|
580 | }
|
---|
581 | if ((name_length > 0) && (value_length > 0)) {
|
---|
582 | break;
|
---|
583 | }
|
---|
584 |
|
---|
585 | /* If not valid, start fresh with next field */
|
---|
586 | exit_flag = FALSE;
|
---|
587 | offset_name_start = offset + 1;
|
---|
588 | offset_name_end = 0;
|
---|
589 | offset_value_start = offset + 1;
|
---|
590 | offset_value_end = offset + 1;
|
---|
591 | offset++;
|
---|
592 | }
|
---|
593 | offset++;
|
---|
594 | }
|
---|
595 | *field_name = NULL;
|
---|
596 | if (name_length) {
|
---|
597 | *field_name = xstrndup(&package_buffer[offset_name_start], name_length);
|
---|
598 | }
|
---|
599 | *field_value = NULL;
|
---|
600 | if (value_length > 0) {
|
---|
601 | *field_value = xstrndup(&package_buffer[offset_value_start], value_length);
|
---|
602 | }
|
---|
603 | return next_offset;
|
---|
604 | }
|
---|
605 |
|
---|
606 | static unsigned fill_package_struct(char *control_buffer)
|
---|
607 | {
|
---|
608 | static const char field_names[] ALIGN1 =
|
---|
609 | "Package\0""Version\0"
|
---|
610 | "Pre-Depends\0""Depends\0""Replaces\0""Provides\0"
|
---|
611 | "Conflicts\0""Suggests\0""Recommends\0""Enhances\0";
|
---|
612 |
|
---|
613 | common_node_t *new_node = xzalloc(sizeof(common_node_t));
|
---|
614 | char *field_name;
|
---|
615 | char *field_value;
|
---|
616 | int field_start = 0;
|
---|
617 | int num = -1;
|
---|
618 | int buffer_length = strlen(control_buffer);
|
---|
619 |
|
---|
620 | new_node->version = search_name_hashtable("unknown");
|
---|
621 | while (field_start < buffer_length) {
|
---|
622 | unsigned field_num;
|
---|
623 |
|
---|
624 | field_start += read_package_field(&control_buffer[field_start],
|
---|
625 | &field_name, &field_value);
|
---|
626 |
|
---|
627 | if (field_name == NULL) {
|
---|
628 | goto fill_package_struct_cleanup;
|
---|
629 | }
|
---|
630 |
|
---|
631 | field_num = index_in_strings(field_names, field_name);
|
---|
632 | switch (field_num) {
|
---|
633 | case 0: /* Package */
|
---|
634 | new_node->name = search_name_hashtable(field_value);
|
---|
635 | break;
|
---|
636 | case 1: /* Version */
|
---|
637 | new_node->version = search_name_hashtable(field_value);
|
---|
638 | break;
|
---|
639 | case 2: /* Pre-Depends */
|
---|
640 | add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS);
|
---|
641 | break;
|
---|
642 | case 3: /* Depends */
|
---|
643 | add_split_dependencies(new_node, field_value, EDGE_DEPENDS);
|
---|
644 | break;
|
---|
645 | case 4: /* Replaces */
|
---|
646 | add_split_dependencies(new_node, field_value, EDGE_REPLACES);
|
---|
647 | break;
|
---|
648 | case 5: /* Provides */
|
---|
649 | add_split_dependencies(new_node, field_value, EDGE_PROVIDES);
|
---|
650 | break;
|
---|
651 | case 6: /* Conflicts */
|
---|
652 | add_split_dependencies(new_node, field_value, EDGE_CONFLICTS);
|
---|
653 | break;
|
---|
654 | case 7: /* Suggests */
|
---|
655 | add_split_dependencies(new_node, field_value, EDGE_SUGGESTS);
|
---|
656 | break;
|
---|
657 | case 8: /* Recommends */
|
---|
658 | add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS);
|
---|
659 | break;
|
---|
660 | case 9: /* Enhances */
|
---|
661 | add_split_dependencies(new_node, field_value, EDGE_ENHANCES);
|
---|
662 | break;
|
---|
663 | }
|
---|
664 | fill_package_struct_cleanup:
|
---|
665 | free(field_name);
|
---|
666 | free(field_value);
|
---|
667 | }
|
---|
668 |
|
---|
669 | if (new_node->version == search_name_hashtable("unknown")) {
|
---|
670 | free_package(new_node);
|
---|
671 | return -1;
|
---|
672 | }
|
---|
673 | num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL);
|
---|
674 | free_package(package_hashtable[num]);
|
---|
675 | package_hashtable[num] = new_node;
|
---|
676 | return num;
|
---|
677 | }
|
---|
678 |
|
---|
679 | /* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
|
---|
680 | static unsigned get_status(const unsigned status_node, const int num)
|
---|
681 | {
|
---|
682 | char *status_string = name_hashtable[status_hashtable[status_node]->status];
|
---|
683 | char *state_sub_string;
|
---|
684 | unsigned state_sub_num;
|
---|
685 | int len;
|
---|
686 | int i;
|
---|
687 |
|
---|
688 | /* set tmp_string to point to the start of the word number */
|
---|
689 | for (i = 1; i < num; i++) {
|
---|
690 | /* skip past a word */
|
---|
691 | status_string += strcspn(status_string, " ");
|
---|
692 | /* skip past the separating spaces */
|
---|
693 | status_string += strspn(status_string, " ");
|
---|
694 | }
|
---|
695 | len = strcspn(status_string, " \n");
|
---|
696 | state_sub_string = xstrndup(status_string, len);
|
---|
697 | state_sub_num = search_name_hashtable(state_sub_string);
|
---|
698 | free(state_sub_string);
|
---|
699 | return state_sub_num;
|
---|
700 | }
|
---|
701 |
|
---|
702 | static void set_status(const unsigned status_node_num, const char *new_value, const int position)
|
---|
703 | {
|
---|
704 | const unsigned new_value_num = search_name_hashtable(new_value);
|
---|
705 | unsigned want = get_status(status_node_num, 1);
|
---|
706 | unsigned flag = get_status(status_node_num, 2);
|
---|
707 | unsigned status = get_status(status_node_num, 3);
|
---|
708 | char *new_status;
|
---|
709 |
|
---|
710 | switch (position) {
|
---|
711 | case 1:
|
---|
712 | want = new_value_num;
|
---|
713 | break;
|
---|
714 | case 2:
|
---|
715 | flag = new_value_num;
|
---|
716 | break;
|
---|
717 | case 3:
|
---|
718 | status = new_value_num;
|
---|
719 | break;
|
---|
720 | default:
|
---|
721 | bb_error_msg_and_die("DEBUG ONLY: this shouldnt happen");
|
---|
722 | }
|
---|
723 |
|
---|
724 | new_status = xasprintf("%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]);
|
---|
725 | status_hashtable[status_node_num]->status = search_name_hashtable(new_status);
|
---|
726 | free(new_status);
|
---|
727 | }
|
---|
728 |
|
---|
729 | static const char *describe_status(int status_num)
|
---|
730 | {
|
---|
731 | int status_want, status_state;
|
---|
732 | if (status_hashtable[status_num] == NULL || status_hashtable[status_num]->status == 0)
|
---|
733 | return "is not installed or flagged to be installed";
|
---|
734 |
|
---|
735 | status_want = get_status(status_num, 1);
|
---|
736 | status_state = get_status(status_num, 3);
|
---|
737 |
|
---|
738 | if (status_state == search_name_hashtable("installed")) {
|
---|
739 | if (status_want == search_name_hashtable("install"))
|
---|
740 | return "is installed";
|
---|
741 | if (status_want == search_name_hashtable("deinstall"))
|
---|
742 | return "is marked to be removed";
|
---|
743 | if (status_want == search_name_hashtable("purge"))
|
---|
744 | return "is marked to be purged";
|
---|
745 | }
|
---|
746 | if (status_want == search_name_hashtable("unknown"))
|
---|
747 | return "is in an indeterminate state";
|
---|
748 | if (status_want == search_name_hashtable("install"))
|
---|
749 | return "is marked to be installed";
|
---|
750 |
|
---|
751 | return "is not installed or flagged to be installed";
|
---|
752 | }
|
---|
753 |
|
---|
754 | static void index_status_file(const char *filename)
|
---|
755 | {
|
---|
756 | FILE *status_file;
|
---|
757 | char *control_buffer;
|
---|
758 | char *status_line;
|
---|
759 | status_node_t *status_node = NULL;
|
---|
760 | unsigned status_num;
|
---|
761 |
|
---|
762 | status_file = xfopen_for_read(filename);
|
---|
763 | while ((control_buffer = xmalloc_fgetline_str(status_file, "\n\n")) != NULL) {
|
---|
764 | const unsigned package_num = fill_package_struct(control_buffer);
|
---|
765 | if (package_num != -1) {
|
---|
766 | status_node = xmalloc(sizeof(status_node_t));
|
---|
767 | /* fill_package_struct doesnt handle the status field */
|
---|
768 | status_line = strstr(control_buffer, "Status:");
|
---|
769 | if (status_line != NULL) {
|
---|
770 | status_line += 7;
|
---|
771 | status_line += strspn(status_line, " \n\t");
|
---|
772 | status_line = xstrndup(status_line, strcspn(status_line, "\n"));
|
---|
773 | status_node->status = search_name_hashtable(status_line);
|
---|
774 | free(status_line);
|
---|
775 | }
|
---|
776 | status_node->package = package_num;
|
---|
777 | status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]);
|
---|
778 | status_hashtable[status_num] = status_node;
|
---|
779 | }
|
---|
780 | free(control_buffer);
|
---|
781 | }
|
---|
782 | fclose(status_file);
|
---|
783 | }
|
---|
784 |
|
---|
785 | static void write_buffer_no_status(FILE *new_status_file, const char *control_buffer)
|
---|
786 | {
|
---|
787 | char *name;
|
---|
788 | char *value;
|
---|
789 | int start = 0;
|
---|
790 | while (1) {
|
---|
791 | start += read_package_field(&control_buffer[start], &name, &value);
|
---|
792 | if (name == NULL) {
|
---|
793 | break;
|
---|
794 | }
|
---|
795 | if (strcmp(name, "Status") != 0) {
|
---|
796 | fprintf(new_status_file, "%s: %s\n", name, value);
|
---|
797 | }
|
---|
798 | }
|
---|
799 | }
|
---|
800 |
|
---|
801 | /* This could do with a cleanup */
|
---|
802 | static void write_status_file(deb_file_t **deb_file)
|
---|
803 | {
|
---|
804 | FILE *old_status_file = xfopen_for_read("/var/lib/dpkg/status");
|
---|
805 | FILE *new_status_file = xfopen_for_write("/var/lib/dpkg/status.udeb");
|
---|
806 | char *package_name;
|
---|
807 | char *status_from_file;
|
---|
808 | char *control_buffer = NULL;
|
---|
809 | char *tmp_string;
|
---|
810 | int status_num;
|
---|
811 | int field_start = 0;
|
---|
812 | int write_flag;
|
---|
813 | int i = 0;
|
---|
814 |
|
---|
815 | /* Update previously known packages */
|
---|
816 | while ((control_buffer = xmalloc_fgetline_str(old_status_file, "\n\n")) != NULL) {
|
---|
817 | tmp_string = strstr(control_buffer, "Package:");
|
---|
818 | if (tmp_string == NULL) {
|
---|
819 | continue;
|
---|
820 | }
|
---|
821 |
|
---|
822 | tmp_string += 8;
|
---|
823 | tmp_string += strspn(tmp_string, " \n\t");
|
---|
824 | package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
|
---|
825 | write_flag = FALSE;
|
---|
826 | tmp_string = strstr(control_buffer, "Status:");
|
---|
827 | if (tmp_string != NULL) {
|
---|
828 | /* Separate the status value from the control buffer */
|
---|
829 | tmp_string += 7;
|
---|
830 | tmp_string += strspn(tmp_string, " \n\t");
|
---|
831 | status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
|
---|
832 | } else {
|
---|
833 | status_from_file = NULL;
|
---|
834 | }
|
---|
835 |
|
---|
836 | /* Find this package in the status hashtable */
|
---|
837 | status_num = search_status_hashtable(package_name);
|
---|
838 | if (status_hashtable[status_num] != NULL) {
|
---|
839 | const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status];
|
---|
840 | if (strcmp(status_from_file, status_from_hashtable) != 0) {
|
---|
841 | /* New status isnt exactly the same as old status */
|
---|
842 | const int state_status = get_status(status_num, 3);
|
---|
843 | if ((strcmp("installed", name_hashtable[state_status]) == 0)
|
---|
844 | || (strcmp("unpacked", name_hashtable[state_status]) == 0)
|
---|
845 | ) {
|
---|
846 | /* We need to add the control file from the package */
|
---|
847 | i = 0;
|
---|
848 | while (deb_file[i] != NULL) {
|
---|
849 | if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) {
|
---|
850 | /* Write a status file entry with a modified status */
|
---|
851 | /* remove trailing \n's */
|
---|
852 | write_buffer_no_status(new_status_file, deb_file[i]->control_file);
|
---|
853 | set_status(status_num, "ok", 2);
|
---|
854 | fprintf(new_status_file, "Status: %s\n\n",
|
---|
855 | name_hashtable[status_hashtable[status_num]->status]);
|
---|
856 | write_flag = TRUE;
|
---|
857 | break;
|
---|
858 | }
|
---|
859 | i++;
|
---|
860 | }
|
---|
861 | /* This is temperary, debugging only */
|
---|
862 | if (deb_file[i] == NULL) {
|
---|
863 | bb_error_msg_and_die("ALERT: cannot find a control file, "
|
---|
864 | "your status file may be broken, status may be "
|
---|
865 | "incorrect for %s", package_name);
|
---|
866 | }
|
---|
867 | }
|
---|
868 | else if (strcmp("not-installed", name_hashtable[state_status]) == 0) {
|
---|
869 | /* Only write the Package, Status, Priority and Section lines */
|
---|
870 | fprintf(new_status_file, "Package: %s\n", package_name);
|
---|
871 | fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
|
---|
872 |
|
---|
873 | while (1) {
|
---|
874 | char *field_name;
|
---|
875 | char *field_value;
|
---|
876 | field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
|
---|
877 | if (field_name == NULL) {
|
---|
878 | break;
|
---|
879 | }
|
---|
880 | if ((strcmp(field_name, "Priority") == 0)
|
---|
881 | || (strcmp(field_name, "Section") == 0)
|
---|
882 | ) {
|
---|
883 | fprintf(new_status_file, "%s: %s\n", field_name, field_value);
|
---|
884 | }
|
---|
885 | }
|
---|
886 | write_flag = TRUE;
|
---|
887 | fputs("\n", new_status_file);
|
---|
888 | }
|
---|
889 | else if (strcmp("config-files", name_hashtable[state_status]) == 0) {
|
---|
890 | /* only change the status line */
|
---|
891 | while (1) {
|
---|
892 | char *field_name;
|
---|
893 | char *field_value;
|
---|
894 | field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
|
---|
895 | if (field_name == NULL) {
|
---|
896 | break;
|
---|
897 | }
|
---|
898 | /* Setup start point for next field */
|
---|
899 | if (strcmp(field_name, "Status") == 0) {
|
---|
900 | fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
|
---|
901 | } else {
|
---|
902 | fprintf(new_status_file, "%s: %s\n", field_name, field_value);
|
---|
903 | }
|
---|
904 | }
|
---|
905 | write_flag = TRUE;
|
---|
906 | fputs("\n", new_status_file);
|
---|
907 | }
|
---|
908 | }
|
---|
909 | }
|
---|
910 | /* If the package from the status file wasnt handle above, do it now*/
|
---|
911 | if (!write_flag) {
|
---|
912 | fprintf(new_status_file, "%s\n\n", control_buffer);
|
---|
913 | }
|
---|
914 |
|
---|
915 | free(status_from_file);
|
---|
916 | free(package_name);
|
---|
917 | free(control_buffer);
|
---|
918 | }
|
---|
919 |
|
---|
920 | /* Write any new packages */
|
---|
921 | for (i = 0; deb_file[i] != NULL; i++) {
|
---|
922 | status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]);
|
---|
923 | if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) {
|
---|
924 | write_buffer_no_status(new_status_file, deb_file[i]->control_file);
|
---|
925 | set_status(status_num, "ok", 2);
|
---|
926 | fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
|
---|
927 | }
|
---|
928 | }
|
---|
929 | fclose(old_status_file);
|
---|
930 | fclose(new_status_file);
|
---|
931 |
|
---|
932 | /* Create a separate backfile to dpkg */
|
---|
933 | if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) {
|
---|
934 | if (errno != ENOENT)
|
---|
935 | bb_error_msg_and_die("can't create backup status file");
|
---|
936 | /* Its ok if renaming the status file fails because status
|
---|
937 | * file doesnt exist, maybe we are starting from scratch */
|
---|
938 | bb_error_msg("no status file found, creating new one");
|
---|
939 | }
|
---|
940 |
|
---|
941 | xrename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status");
|
---|
942 | }
|
---|
943 |
|
---|
944 | /* This function returns TRUE if the given package can satisfy a
|
---|
945 | * dependency of type depend_type.
|
---|
946 | *
|
---|
947 | * A pre-depends is satisfied only if a package is already installed,
|
---|
948 | * which a regular depends can be satisfied by a package which we want
|
---|
949 | * to install.
|
---|
950 | */
|
---|
951 | static int package_satisfies_dependency(int package, int depend_type)
|
---|
952 | {
|
---|
953 | int status_num = search_status_hashtable(name_hashtable[package_hashtable[package]->name]);
|
---|
954 |
|
---|
955 | /* status could be unknown if package is a pure virtual
|
---|
956 | * provides which cannot satisfy any dependency by itself.
|
---|
957 | */
|
---|
958 | if (status_hashtable[status_num] == NULL)
|
---|
959 | return 0;
|
---|
960 |
|
---|
961 | switch (depend_type) {
|
---|
962 | case EDGE_PRE_DEPENDS: return get_status(status_num, 3) == search_name_hashtable("installed");
|
---|
963 | case EDGE_DEPENDS: return get_status(status_num, 1) == search_name_hashtable("install");
|
---|
964 | }
|
---|
965 | return 0;
|
---|
966 | }
|
---|
967 |
|
---|
968 | static int check_deps(deb_file_t **deb_file, int deb_start /*, int dep_max_count - ?? */)
|
---|
969 | {
|
---|
970 | int *conflicts = NULL;
|
---|
971 | int conflicts_num = 0;
|
---|
972 | int i = deb_start;
|
---|
973 | int j;
|
---|
974 |
|
---|
975 | /* Check for conflicts
|
---|
976 | * TODO: TEST if conflicts with other packages to be installed
|
---|
977 | *
|
---|
978 | * Add install packages and the packages they provide
|
---|
979 | * to the list of files to check conflicts for
|
---|
980 | */
|
---|
981 |
|
---|
982 | /* Create array of package numbers to check against
|
---|
983 | * installed package for conflicts*/
|
---|
984 | while (deb_file[i] != NULL) {
|
---|
985 | const unsigned package_num = deb_file[i]->package;
|
---|
986 | conflicts = xrealloc_vector(conflicts, 2, conflicts_num);
|
---|
987 | conflicts[conflicts_num] = package_num;
|
---|
988 | conflicts_num++;
|
---|
989 | /* add provides to conflicts list */
|
---|
990 | for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) {
|
---|
991 | if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) {
|
---|
992 | const int conflicts_package_num = search_package_hashtable(
|
---|
993 | package_hashtable[package_num]->edge[j]->name,
|
---|
994 | package_hashtable[package_num]->edge[j]->version,
|
---|
995 | package_hashtable[package_num]->edge[j]->operator);
|
---|
996 | if (package_hashtable[conflicts_package_num] == NULL) {
|
---|
997 | /* create a new package */
|
---|
998 | common_node_t *new_node = xzalloc(sizeof(common_node_t));
|
---|
999 | new_node->name = package_hashtable[package_num]->edge[j]->name;
|
---|
1000 | new_node->version = package_hashtable[package_num]->edge[j]->version;
|
---|
1001 | package_hashtable[conflicts_package_num] = new_node;
|
---|
1002 | }
|
---|
1003 | conflicts = xrealloc_vector(conflicts, 2, conflicts_num);
|
---|
1004 | conflicts[conflicts_num] = conflicts_package_num;
|
---|
1005 | conflicts_num++;
|
---|
1006 | }
|
---|
1007 | }
|
---|
1008 | i++;
|
---|
1009 | }
|
---|
1010 |
|
---|
1011 | /* Check conflicts */
|
---|
1012 | i = 0;
|
---|
1013 | while (deb_file[i] != NULL) {
|
---|
1014 | const common_node_t *package_node = package_hashtable[deb_file[i]->package];
|
---|
1015 | int status_num = 0;
|
---|
1016 | status_num = search_status_hashtable(name_hashtable[package_node->name]);
|
---|
1017 |
|
---|
1018 | if (get_status(status_num, 3) == search_name_hashtable("installed")) {
|
---|
1019 | i++;
|
---|
1020 | continue;
|
---|
1021 | }
|
---|
1022 |
|
---|
1023 | for (j = 0; j < package_node->num_of_edges; j++) {
|
---|
1024 | const edge_t *package_edge = package_node->edge[j];
|
---|
1025 |
|
---|
1026 | if (package_edge->type == EDGE_CONFLICTS) {
|
---|
1027 | const unsigned package_num =
|
---|
1028 | search_package_hashtable(package_edge->name,
|
---|
1029 | package_edge->version,
|
---|
1030 | package_edge->operator);
|
---|
1031 | int result = 0;
|
---|
1032 | if (package_hashtable[package_num] != NULL) {
|
---|
1033 | status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
|
---|
1034 |
|
---|
1035 | if (get_status(status_num, 1) == search_name_hashtable("install")) {
|
---|
1036 | result = test_version(package_hashtable[deb_file[i]->package]->version,
|
---|
1037 | package_edge->version, package_edge->operator);
|
---|
1038 | }
|
---|
1039 | }
|
---|
1040 |
|
---|
1041 | if (result) {
|
---|
1042 | bb_error_msg_and_die("package %s conflicts with %s",
|
---|
1043 | name_hashtable[package_node->name],
|
---|
1044 | name_hashtable[package_edge->name]);
|
---|
1045 | }
|
---|
1046 | }
|
---|
1047 | }
|
---|
1048 | i++;
|
---|
1049 | }
|
---|
1050 |
|
---|
1051 |
|
---|
1052 | /* Check dependendcies */
|
---|
1053 | for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
|
---|
1054 | int status_num = 0;
|
---|
1055 | int number_of_alternatives = 0;
|
---|
1056 | const edge_t * root_of_alternatives = NULL;
|
---|
1057 | const common_node_t *package_node = package_hashtable[i];
|
---|
1058 |
|
---|
1059 | /* If the package node does not exist then this
|
---|
1060 | * package is a virtual one. In which case there are
|
---|
1061 | * no dependencies to check.
|
---|
1062 | */
|
---|
1063 | if (package_node == NULL) continue;
|
---|
1064 |
|
---|
1065 | status_num = search_status_hashtable(name_hashtable[package_node->name]);
|
---|
1066 |
|
---|
1067 | /* If there is no status then this package is a
|
---|
1068 | * virtual one provided by something else. In which
|
---|
1069 | * case there are no dependencies to check.
|
---|
1070 | */
|
---|
1071 | if (status_hashtable[status_num] == NULL) continue;
|
---|
1072 |
|
---|
1073 | /* If we don't want this package installed then we may
|
---|
1074 | * as well ignore it's dependencies.
|
---|
1075 | */
|
---|
1076 | if (get_status(status_num, 1) != search_name_hashtable("install")) {
|
---|
1077 | continue;
|
---|
1078 | }
|
---|
1079 |
|
---|
1080 | /* This code is tested only for EDGE_DEPENDS, since I
|
---|
1081 | * have no suitable pre-depends available. There is no
|
---|
1082 | * reason that it shouldn't work though :-)
|
---|
1083 | */
|
---|
1084 | for (j = 0; j < package_node->num_of_edges; j++) {
|
---|
1085 | const edge_t *package_edge = package_node->edge[j];
|
---|
1086 | unsigned package_num;
|
---|
1087 |
|
---|
1088 | if (package_edge->type == EDGE_OR_PRE_DEPENDS
|
---|
1089 | || package_edge->type == EDGE_OR_DEPENDS
|
---|
1090 | ) {
|
---|
1091 | /* start an EDGE_OR_ list */
|
---|
1092 | number_of_alternatives = package_edge->version;
|
---|
1093 | root_of_alternatives = package_edge;
|
---|
1094 | continue;
|
---|
1095 | }
|
---|
1096 | if (number_of_alternatives == 0) { /* not in the middle of an EDGE_OR_ list */
|
---|
1097 | number_of_alternatives = 1;
|
---|
1098 | root_of_alternatives = NULL;
|
---|
1099 | }
|
---|
1100 |
|
---|
1101 | package_num = search_package_hashtable(package_edge->name, package_edge->version, package_edge->operator);
|
---|
1102 |
|
---|
1103 | if (package_edge->type == EDGE_PRE_DEPENDS
|
---|
1104 | || package_edge->type == EDGE_DEPENDS
|
---|
1105 | ) {
|
---|
1106 | int result=1;
|
---|
1107 | status_num = 0;
|
---|
1108 |
|
---|
1109 | /* If we are inside an alternative then check
|
---|
1110 | * this edge is the right type.
|
---|
1111 | *
|
---|
1112 | * EDGE_DEPENDS == OR_DEPENDS -1
|
---|
1113 | * EDGE_PRE_DEPENDS == OR_PRE_DEPENDS -1
|
---|
1114 | */
|
---|
1115 | if (root_of_alternatives && package_edge->type != root_of_alternatives->type - 1)
|
---|
1116 | bb_error_msg_and_die("fatal error, package dependencies corrupt: %d != %d - 1",
|
---|
1117 | package_edge->type, root_of_alternatives->type);
|
---|
1118 |
|
---|
1119 | if (package_hashtable[package_num] != NULL)
|
---|
1120 | result = !package_satisfies_dependency(package_num, package_edge->type);
|
---|
1121 |
|
---|
1122 | if (result) { /* check for other package which provide what we are looking for */
|
---|
1123 | int provider = -1;
|
---|
1124 |
|
---|
1125 | while ((provider = search_for_provides(package_edge->name, provider)) > -1) {
|
---|
1126 | if (package_hashtable[provider] == NULL) {
|
---|
1127 | puts("Have a provider but no package information for it");
|
---|
1128 | continue;
|
---|
1129 | }
|
---|
1130 | result = !package_satisfies_dependency(provider, package_edge->type);
|
---|
1131 |
|
---|
1132 | if (result == 0)
|
---|
1133 | break;
|
---|
1134 | }
|
---|
1135 | }
|
---|
1136 |
|
---|
1137 | /* It must be already installed, or to be installed */
|
---|
1138 | number_of_alternatives--;
|
---|
1139 | if (result && number_of_alternatives == 0) {
|
---|
1140 | if (root_of_alternatives)
|
---|
1141 | bb_error_msg_and_die(
|
---|
1142 | "package %s %sdepends on %s, "
|
---|
1143 | "which cannot be satisfied",
|
---|
1144 | name_hashtable[package_node->name],
|
---|
1145 | package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
|
---|
1146 | name_hashtable[root_of_alternatives->name]);
|
---|
1147 | bb_error_msg_and_die(
|
---|
1148 | "package %s %sdepends on %s, which %s\n",
|
---|
1149 | name_hashtable[package_node->name],
|
---|
1150 | package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
|
---|
1151 | name_hashtable[package_edge->name],
|
---|
1152 | describe_status(status_num));
|
---|
1153 | }
|
---|
1154 | if (result == 0 && number_of_alternatives) {
|
---|
1155 | /* we've found a package which
|
---|
1156 | * satisfies the dependency,
|
---|
1157 | * so skip over the rest of
|
---|
1158 | * the alternatives.
|
---|
1159 | */
|
---|
1160 | j += number_of_alternatives;
|
---|
1161 | number_of_alternatives = 0;
|
---|
1162 | }
|
---|
1163 | }
|
---|
1164 | }
|
---|
1165 | }
|
---|
1166 | free(conflicts);
|
---|
1167 | return TRUE;
|
---|
1168 | }
|
---|
1169 |
|
---|
1170 | static char **create_list(const char *filename)
|
---|
1171 | {
|
---|
1172 | FILE *list_stream;
|
---|
1173 | char **file_list;
|
---|
1174 | char *line;
|
---|
1175 | int count;
|
---|
1176 |
|
---|
1177 | /* don't use [xw]fopen here, handle error ourself */
|
---|
1178 | list_stream = fopen_for_read(filename);
|
---|
1179 | if (list_stream == NULL) {
|
---|
1180 | return NULL;
|
---|
1181 | }
|
---|
1182 |
|
---|
1183 | file_list = NULL;
|
---|
1184 | count = 0;
|
---|
1185 | while ((line = xmalloc_fgetline(list_stream)) != NULL) {
|
---|
1186 | file_list = xrealloc_vector(file_list, 2, count);
|
---|
1187 | file_list[count++] = line;
|
---|
1188 | /*file_list[count] = NULL; - xrealloc_vector did it */
|
---|
1189 | }
|
---|
1190 | fclose(list_stream);
|
---|
1191 |
|
---|
1192 | return file_list;
|
---|
1193 | }
|
---|
1194 |
|
---|
1195 | /* maybe i should try and hook this into remove_file.c somehow */
|
---|
1196 | static int remove_file_array(char **remove_names, char **exclude_names)
|
---|
1197 | {
|
---|
1198 | struct stat path_stat;
|
---|
1199 | int remove_flag = 1; /* not removed anything yet */
|
---|
1200 | int i, j;
|
---|
1201 |
|
---|
1202 | if (remove_names == NULL) {
|
---|
1203 | return 0;
|
---|
1204 | }
|
---|
1205 | for (i = 0; remove_names[i] != NULL; i++) {
|
---|
1206 | if (exclude_names != NULL) {
|
---|
1207 | for (j = 0; exclude_names[j] != NULL; j++) {
|
---|
1208 | if (strcmp(remove_names[i], exclude_names[j]) == 0) {
|
---|
1209 | goto skip;
|
---|
1210 | }
|
---|
1211 | }
|
---|
1212 | }
|
---|
1213 | /* TODO: why we are checking lstat? we can just try rm/rmdir */
|
---|
1214 | if (lstat(remove_names[i], &path_stat) < 0) {
|
---|
1215 | continue;
|
---|
1216 | }
|
---|
1217 | if (S_ISDIR(path_stat.st_mode)) {
|
---|
1218 | remove_flag &= rmdir(remove_names[i]); /* 0 if no error */
|
---|
1219 | } else {
|
---|
1220 | remove_flag &= unlink(remove_names[i]); /* 0 if no error */
|
---|
1221 | }
|
---|
1222 | skip:
|
---|
1223 | continue;
|
---|
1224 | }
|
---|
1225 | return (remove_flag == 0);
|
---|
1226 | }
|
---|
1227 |
|
---|
1228 | static void run_package_script_or_die(const char *package_name, const char *script_type)
|
---|
1229 | {
|
---|
1230 | char *script_path;
|
---|
1231 | int result;
|
---|
1232 |
|
---|
1233 | script_path = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, script_type);
|
---|
1234 |
|
---|
1235 | /* If the file doesnt exist is isnt fatal */
|
---|
1236 | result = access(script_path, F_OK) ? EXIT_SUCCESS : system(script_path);
|
---|
1237 | free(script_path);
|
---|
1238 | if (result)
|
---|
1239 | bb_error_msg_and_die("%s failed, exit code %d", script_type, result);
|
---|
1240 | }
|
---|
1241 |
|
---|
1242 | /*
|
---|
1243 | The policy manual defines what scripts get called when and with
|
---|
1244 | what arguments. I realize that busybox does not support all of
|
---|
1245 | these scenarios, but it does support some of them; it does not,
|
---|
1246 | however, run them with any parameters in run_package_script_or_die().
|
---|
1247 | Here are the scripts:
|
---|
1248 |
|
---|
1249 | preinst install
|
---|
1250 | preinst install <old_version>
|
---|
1251 | preinst upgrade <old_version>
|
---|
1252 | preinst abort_upgrade <new_version>
|
---|
1253 | postinst configure <most_recent_version>
|
---|
1254 | postinst abort-upgade <new_version>
|
---|
1255 | postinst abort-remove
|
---|
1256 | postinst abort-remove in-favour <package> <version>
|
---|
1257 | postinst abort-deconfigure in-favor <failed_install_package> removing <conflicting_package> <version>
|
---|
1258 | prerm remove
|
---|
1259 | prerm upgrade <new_version>
|
---|
1260 | prerm failed-upgrade <old_version>
|
---|
1261 | prerm remove in-favor <package> <new_version>
|
---|
1262 | prerm deconfigure in-favour <package> <version> removing <package> <version>
|
---|
1263 | postrm remove
|
---|
1264 | postrm purge
|
---|
1265 | postrm upgrade <new_version>
|
---|
1266 | postrm failed-upgrade <old_version>
|
---|
1267 | postrm abort-install
|
---|
1268 | postrm abort-install <old_version>
|
---|
1269 | postrm abort-upgrade <old_version>
|
---|
1270 | postrm disappear <overwriter> <version>
|
---|
1271 | */
|
---|
1272 | static const char *const all_control_files[] = {
|
---|
1273 | "preinst", "postinst", "prerm", "postrm",
|
---|
1274 | "list", "md5sums", "shlibs", "conffiles",
|
---|
1275 | "config", "templates"
|
---|
1276 | };
|
---|
1277 |
|
---|
1278 | static char **all_control_list(const char *package_name)
|
---|
1279 | {
|
---|
1280 | unsigned i = 0;
|
---|
1281 | char **remove_files;
|
---|
1282 |
|
---|
1283 | /* Create a list of all /var/lib/dpkg/info/<package> files */
|
---|
1284 | remove_files = xzalloc(sizeof(all_control_files) + sizeof(char*));
|
---|
1285 | while (i < ARRAY_SIZE(all_control_files)) {
|
---|
1286 | remove_files[i] = xasprintf("/var/lib/dpkg/info/%s.%s",
|
---|
1287 | package_name, all_control_files[i]);
|
---|
1288 | i++;
|
---|
1289 | }
|
---|
1290 |
|
---|
1291 | return remove_files;
|
---|
1292 | }
|
---|
1293 |
|
---|
1294 | static void free_array(char **array)
|
---|
1295 | {
|
---|
1296 | if (array) {
|
---|
1297 | unsigned i = 0;
|
---|
1298 | while (array[i]) {
|
---|
1299 | free(array[i]);
|
---|
1300 | i++;
|
---|
1301 | }
|
---|
1302 | free(array);
|
---|
1303 | }
|
---|
1304 | }
|
---|
1305 |
|
---|
1306 | /* This function lists information on the installed packages. It loops through
|
---|
1307 | * the status_hashtable to retrieve the info. This results in smaller code than
|
---|
1308 | * scanning the status file. The resulting list, however, is unsorted.
|
---|
1309 | */
|
---|
1310 | static void list_packages(const char *pattern)
|
---|
1311 | {
|
---|
1312 | int i;
|
---|
1313 |
|
---|
1314 | puts(" Name Version");
|
---|
1315 | puts("+++-==============-==============");
|
---|
1316 |
|
---|
1317 | /* go through status hash, dereference package hash and finally strings */
|
---|
1318 | for (i = 0; i < STATUS_HASH_PRIME+1; i++) {
|
---|
1319 | if (status_hashtable[i]) {
|
---|
1320 | const char *stat_str; /* status string */
|
---|
1321 | const char *name_str; /* package name */
|
---|
1322 | const char *vers_str; /* version */
|
---|
1323 | char s1, s2; /* status abbreviations */
|
---|
1324 | int spccnt; /* space count */
|
---|
1325 | int j;
|
---|
1326 |
|
---|
1327 | stat_str = name_hashtable[status_hashtable[i]->status];
|
---|
1328 | name_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->name];
|
---|
1329 | vers_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->version];
|
---|
1330 |
|
---|
1331 | if (pattern && fnmatch(pattern, name_str, 0) != 0)
|
---|
1332 | continue;
|
---|
1333 |
|
---|
1334 | /* get abbreviation for status field 1 */
|
---|
1335 | s1 = stat_str[0] == 'i' ? 'i' : 'r';
|
---|
1336 |
|
---|
1337 | /* get abbreviation for status field 2 */
|
---|
1338 | for (j = 0, spccnt = 0; stat_str[j] && spccnt < 2; j++) {
|
---|
1339 | if (stat_str[j] == ' ') spccnt++;
|
---|
1340 | }
|
---|
1341 | s2 = stat_str[j];
|
---|
1342 |
|
---|
1343 | /* print out the line formatted like Debian dpkg */
|
---|
1344 | printf("%c%c %-14s %s\n", s1, s2, name_str, vers_str);
|
---|
1345 | }
|
---|
1346 | }
|
---|
1347 | }
|
---|
1348 |
|
---|
1349 | static void remove_package(const unsigned package_num, int noisy)
|
---|
1350 | {
|
---|
1351 | const char *package_name = name_hashtable[package_hashtable[package_num]->name];
|
---|
1352 | const char *package_version = name_hashtable[package_hashtable[package_num]->version];
|
---|
1353 | const unsigned status_num = search_status_hashtable(package_name);
|
---|
1354 | const int package_name_length = strlen(package_name);
|
---|
1355 | char **remove_files;
|
---|
1356 | char **exclude_files;
|
---|
1357 | char list_name[package_name_length + 25];
|
---|
1358 | char conffile_name[package_name_length + 30];
|
---|
1359 |
|
---|
1360 | if (noisy)
|
---|
1361 | printf("Removing %s (%s)...\n", package_name, package_version);
|
---|
1362 |
|
---|
1363 | /* Run prerm script */
|
---|
1364 | run_package_script_or_die(package_name, "prerm");
|
---|
1365 |
|
---|
1366 | /* Create a list of files to remove, and a separate list of those to keep */
|
---|
1367 | sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list");
|
---|
1368 | remove_files = create_list(list_name);
|
---|
1369 |
|
---|
1370 | sprintf(conffile_name, "/var/lib/dpkg/info/%s.%s", package_name, "conffiles");
|
---|
1371 | exclude_files = create_list(conffile_name);
|
---|
1372 |
|
---|
1373 | /* Some directories can't be removed straight away, so do multiple passes */
|
---|
1374 | while (remove_file_array(remove_files, exclude_files))
|
---|
1375 | continue;
|
---|
1376 | free_array(exclude_files);
|
---|
1377 | free_array(remove_files);
|
---|
1378 |
|
---|
1379 | /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */
|
---|
1380 | exclude_files = xzalloc(sizeof(exclude_files[0]) * 3);
|
---|
1381 | exclude_files[0] = xstrdup(conffile_name);
|
---|
1382 | exclude_files[1] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm");
|
---|
1383 |
|
---|
1384 | /* Create a list of all /var/lib/dpkg/info/<package> files */
|
---|
1385 | remove_files = all_control_list(package_name);
|
---|
1386 |
|
---|
1387 | remove_file_array(remove_files, exclude_files);
|
---|
1388 | free_array(remove_files);
|
---|
1389 | free_array(exclude_files);
|
---|
1390 |
|
---|
1391 | /* rename <package>.conffiles to <package>.list
|
---|
1392 | * The conffiles control file isn't required in Debian packages, so don't
|
---|
1393 | * error out if it's missing. */
|
---|
1394 | rename(conffile_name, list_name);
|
---|
1395 |
|
---|
1396 | /* Change package status */
|
---|
1397 | set_status(status_num, "config-files", 3);
|
---|
1398 | }
|
---|
1399 |
|
---|
1400 | static void purge_package(const unsigned package_num)
|
---|
1401 | {
|
---|
1402 | const char *package_name = name_hashtable[package_hashtable[package_num]->name];
|
---|
1403 | const char *package_version = name_hashtable[package_hashtable[package_num]->version];
|
---|
1404 | const unsigned status_num = search_status_hashtable(package_name);
|
---|
1405 | char **remove_files;
|
---|
1406 | char **exclude_files;
|
---|
1407 | char list_name[strlen(package_name) + 25];
|
---|
1408 |
|
---|
1409 | printf("Purging %s (%s)...\n", package_name, package_version);
|
---|
1410 |
|
---|
1411 | /* Run prerm script */
|
---|
1412 | run_package_script_or_die(package_name, "prerm");
|
---|
1413 |
|
---|
1414 | /* Create a list of files to remove */
|
---|
1415 | sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list");
|
---|
1416 | remove_files = create_list(list_name);
|
---|
1417 |
|
---|
1418 | /* Some directories cant be removed straight away, so do multiple passes */
|
---|
1419 | while (remove_file_array(remove_files, NULL))
|
---|
1420 | continue;
|
---|
1421 | free_array(remove_files);
|
---|
1422 |
|
---|
1423 | /* Create a list of all /var/lib/dpkg/info/<package> files */
|
---|
1424 | remove_files = all_control_list(package_name);
|
---|
1425 |
|
---|
1426 | /* Delete all of them except the postrm script */
|
---|
1427 | exclude_files = xzalloc(sizeof(exclude_files[0]) * 2);
|
---|
1428 | exclude_files[0] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm");
|
---|
1429 | remove_file_array(remove_files, exclude_files);
|
---|
1430 | free_array(exclude_files);
|
---|
1431 |
|
---|
1432 | /* Run and remove postrm script */
|
---|
1433 | run_package_script_or_die(package_name, "postrm");
|
---|
1434 | remove_file_array(remove_files, NULL);
|
---|
1435 |
|
---|
1436 | free_array(remove_files);
|
---|
1437 |
|
---|
1438 | /* Change package status */
|
---|
1439 | set_status(status_num, "not-installed", 3);
|
---|
1440 | }
|
---|
1441 |
|
---|
1442 | static archive_handle_t *init_archive_deb_ar(const char *filename)
|
---|
1443 | {
|
---|
1444 | archive_handle_t *ar_handle;
|
---|
1445 |
|
---|
1446 | /* Setup an ar archive handle that refers to the gzip sub archive */
|
---|
1447 | ar_handle = init_handle();
|
---|
1448 | ar_handle->filter = filter_accept_list_reassign;
|
---|
1449 | ar_handle->src_fd = xopen(filename, O_RDONLY);
|
---|
1450 |
|
---|
1451 | return ar_handle;
|
---|
1452 | }
|
---|
1453 |
|
---|
1454 | static void init_archive_deb_control(archive_handle_t *ar_handle)
|
---|
1455 | {
|
---|
1456 | archive_handle_t *tar_handle;
|
---|
1457 |
|
---|
1458 | /* Setup the tar archive handle */
|
---|
1459 | tar_handle = init_handle();
|
---|
1460 | tar_handle->src_fd = ar_handle->src_fd;
|
---|
1461 |
|
---|
1462 | /* We don't care about data.tar.* or debian-binary, just control.tar.* */
|
---|
1463 | #if ENABLE_FEATURE_SEAMLESS_GZ
|
---|
1464 | llist_add_to(&(ar_handle->accept), (char*)"control.tar.gz");
|
---|
1465 | #endif
|
---|
1466 | #if ENABLE_FEATURE_SEAMLESS_BZ2
|
---|
1467 | llist_add_to(&(ar_handle->accept), (char*)"control.tar.bz2");
|
---|
1468 | #endif
|
---|
1469 |
|
---|
1470 | /* Assign the tar handle as a subarchive of the ar handle */
|
---|
1471 | ar_handle->dpkg__sub_archive = tar_handle;
|
---|
1472 | }
|
---|
1473 |
|
---|
1474 | static void init_archive_deb_data(archive_handle_t *ar_handle)
|
---|
1475 | {
|
---|
1476 | archive_handle_t *tar_handle;
|
---|
1477 |
|
---|
1478 | /* Setup the tar archive handle */
|
---|
1479 | tar_handle = init_handle();
|
---|
1480 | tar_handle->src_fd = ar_handle->src_fd;
|
---|
1481 |
|
---|
1482 | /* We don't care about control.tar.* or debian-binary, just data.tar.* */
|
---|
1483 | #if ENABLE_FEATURE_SEAMLESS_GZ
|
---|
1484 | llist_add_to(&(ar_handle->accept), (char*)"data.tar.gz");
|
---|
1485 | #endif
|
---|
1486 | #if ENABLE_FEATURE_SEAMLESS_BZ2
|
---|
1487 | llist_add_to(&(ar_handle->accept), (char*)"data.tar.bz2");
|
---|
1488 | #endif
|
---|
1489 |
|
---|
1490 | /* Assign the tar handle as a subarchive of the ar handle */
|
---|
1491 | ar_handle->dpkg__sub_archive = tar_handle;
|
---|
1492 | }
|
---|
1493 |
|
---|
1494 | static void FAST_FUNC data_extract_to_buffer(archive_handle_t *archive_handle)
|
---|
1495 | {
|
---|
1496 | unsigned size = archive_handle->file_header->size;
|
---|
1497 |
|
---|
1498 | archive_handle->dpkg__buffer = xzalloc(size + 1);
|
---|
1499 | xread(archive_handle->src_fd, archive_handle->dpkg__buffer, size);
|
---|
1500 | }
|
---|
1501 |
|
---|
1502 | static char *deb_extract_control_file_to_buffer(archive_handle_t *ar_handle, llist_t *myaccept)
|
---|
1503 | {
|
---|
1504 | ar_handle->dpkg__sub_archive->action_data = data_extract_to_buffer;
|
---|
1505 | ar_handle->dpkg__sub_archive->accept = myaccept;
|
---|
1506 | ar_handle->dpkg__sub_archive->filter = filter_accept_list;
|
---|
1507 |
|
---|
1508 | unpack_ar_archive(ar_handle);
|
---|
1509 | close(ar_handle->src_fd);
|
---|
1510 |
|
---|
1511 | return ar_handle->dpkg__sub_archive->dpkg__buffer;
|
---|
1512 | }
|
---|
1513 |
|
---|
1514 | static void append_control_file_to_llist(const char *package_name, const char *control_name, llist_t **ll)
|
---|
1515 | {
|
---|
1516 | FILE *fp;
|
---|
1517 | char *filename, *line;
|
---|
1518 |
|
---|
1519 | filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, control_name);
|
---|
1520 | fp = fopen_for_read(filename);
|
---|
1521 | free(filename);
|
---|
1522 | if (fp != NULL) {
|
---|
1523 | while ((line = xmalloc_fgetline(fp)) != NULL)
|
---|
1524 | llist_add_to(ll, line);
|
---|
1525 | fclose(fp);
|
---|
1526 | }
|
---|
1527 | }
|
---|
1528 |
|
---|
1529 | static char FAST_FUNC filter_rename_config(archive_handle_t *archive_handle)
|
---|
1530 | {
|
---|
1531 | int fd;
|
---|
1532 | char *name_ptr = archive_handle->file_header->name + 1;
|
---|
1533 |
|
---|
1534 | /* Is this file marked as config file? */
|
---|
1535 | if (!find_list_entry(archive_handle->accept, name_ptr))
|
---|
1536 | return EXIT_SUCCESS; /* no */
|
---|
1537 |
|
---|
1538 | fd = open(name_ptr, O_RDONLY);
|
---|
1539 | if (fd >= 0) {
|
---|
1540 | md5_ctx_t md5;
|
---|
1541 | char *md5line, *buf;
|
---|
1542 | int count;
|
---|
1543 |
|
---|
1544 | /* Calculate MD5 of existing file */
|
---|
1545 | buf = xmalloc(4096);
|
---|
1546 | md5_begin(&md5);
|
---|
1547 | while ((count = safe_read(fd, buf, 4096)) > 0)
|
---|
1548 | md5_hash(&md5, buf, count);
|
---|
1549 | md5_end(&md5, buf); /* using buf as result storage */
|
---|
1550 | close(fd);
|
---|
1551 |
|
---|
1552 | md5line = xmalloc(16 * 2 + 2 + strlen(name_ptr) + 1);
|
---|
1553 | sprintf(bin2hex(md5line, buf, 16), " %s", name_ptr);
|
---|
1554 | free(buf);
|
---|
1555 |
|
---|
1556 | /* Is it changed after install? */
|
---|
1557 | if (find_list_entry(archive_handle->accept, md5line) == NULL) {
|
---|
1558 | printf("Warning: Creating %s as %s.dpkg-new\n", name_ptr, name_ptr);
|
---|
1559 | archive_handle->file_header->name = xasprintf("%s.dpkg-new", archive_handle->file_header->name);
|
---|
1560 | }
|
---|
1561 | free(md5line);
|
---|
1562 | }
|
---|
1563 | return EXIT_SUCCESS;
|
---|
1564 | }
|
---|
1565 |
|
---|
1566 | static void FAST_FUNC data_extract_all_prefix(archive_handle_t *archive_handle)
|
---|
1567 | {
|
---|
1568 | char *name_ptr = archive_handle->file_header->name;
|
---|
1569 |
|
---|
1570 | /* Skip all leading "/" */
|
---|
1571 | while (*name_ptr == '/')
|
---|
1572 | name_ptr++;
|
---|
1573 | /* Skip all leading "./" and "../" */
|
---|
1574 | while (name_ptr[0] == '.') {
|
---|
1575 | if (name_ptr[1] == '.')
|
---|
1576 | name_ptr++;
|
---|
1577 | if (name_ptr[1] != '/')
|
---|
1578 | break;
|
---|
1579 | name_ptr += 2;
|
---|
1580 | }
|
---|
1581 |
|
---|
1582 | if (name_ptr[0] != '\0') {
|
---|
1583 | archive_handle->file_header->name = xasprintf("%s%s", archive_handle->dpkg__buffer, name_ptr);
|
---|
1584 | data_extract_all(archive_handle);
|
---|
1585 | if (fnmatch("*.dpkg-new", archive_handle->file_header->name, 0) == 0) {
|
---|
1586 | /* remove .dpkg-new suffix */
|
---|
1587 | archive_handle->file_header->name[strlen(archive_handle->file_header->name) - 9] = '\0';
|
---|
1588 | }
|
---|
1589 | }
|
---|
1590 | }
|
---|
1591 |
|
---|
1592 | enum {
|
---|
1593 | /* Commands */
|
---|
1594 | OPT_configure = (1 << 0),
|
---|
1595 | OPT_install = (1 << 1),
|
---|
1596 | OPT_list_installed = (1 << 2),
|
---|
1597 | OPT_purge = (1 << 3),
|
---|
1598 | OPT_remove = (1 << 4),
|
---|
1599 | OPT_unpack = (1 << 5),
|
---|
1600 | OPTMASK_cmd = (1 << 6) - 1,
|
---|
1601 | /* Options */
|
---|
1602 | OPT_force = (1 << 6),
|
---|
1603 | OPT_force_ignore_depends = (1 << 7),
|
---|
1604 | OPT_force_confnew = (1 << 8),
|
---|
1605 | OPT_force_confold = (1 << 9),
|
---|
1606 | };
|
---|
1607 |
|
---|
1608 | static void unpack_package(deb_file_t *deb_file)
|
---|
1609 | {
|
---|
1610 | const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
|
---|
1611 | const unsigned status_num = search_status_hashtable(package_name);
|
---|
1612 | const unsigned status_package_num = status_hashtable[status_num]->package;
|
---|
1613 | char *info_prefix;
|
---|
1614 | char *list_filename;
|
---|
1615 | archive_handle_t *archive_handle;
|
---|
1616 | FILE *out_stream;
|
---|
1617 | llist_t *accept_list;
|
---|
1618 | llist_t *conffile_list;
|
---|
1619 | int i;
|
---|
1620 |
|
---|
1621 | /* If existing version, remove it first */
|
---|
1622 | conffile_list = NULL;
|
---|
1623 | if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) {
|
---|
1624 | /* Package is already installed, remove old version first */
|
---|
1625 | printf("Preparing to replace %s %s (using %s)...\n", package_name,
|
---|
1626 | name_hashtable[package_hashtable[status_package_num]->version],
|
---|
1627 | deb_file->filename);
|
---|
1628 |
|
---|
1629 | /* Read md5sums from old package */
|
---|
1630 | if (!(option_mask32 & OPT_force_confold))
|
---|
1631 | append_control_file_to_llist(package_name, "md5sums", &conffile_list);
|
---|
1632 |
|
---|
1633 | remove_package(status_package_num, 0);
|
---|
1634 | } else {
|
---|
1635 | printf("Unpacking %s (from %s)...\n", package_name, deb_file->filename);
|
---|
1636 | }
|
---|
1637 |
|
---|
1638 | /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
|
---|
1639 | info_prefix = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "");
|
---|
1640 | archive_handle = init_archive_deb_ar(deb_file->filename);
|
---|
1641 | init_archive_deb_control(archive_handle);
|
---|
1642 |
|
---|
1643 | accept_list = NULL;
|
---|
1644 | i = 0;
|
---|
1645 | while (i < ARRAY_SIZE(all_control_files)) {
|
---|
1646 | char *c = xasprintf("./%s", all_control_files[i]);
|
---|
1647 | llist_add_to(&accept_list, c);
|
---|
1648 | i++;
|
---|
1649 | }
|
---|
1650 | archive_handle->dpkg__sub_archive->accept = accept_list;
|
---|
1651 | archive_handle->dpkg__sub_archive->filter = filter_accept_list;
|
---|
1652 | archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix;
|
---|
1653 | archive_handle->dpkg__sub_archive->dpkg__buffer = info_prefix;
|
---|
1654 | archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_UNLINK_OLD;
|
---|
1655 | unpack_ar_archive(archive_handle);
|
---|
1656 |
|
---|
1657 | /* Run the preinst prior to extracting */
|
---|
1658 | run_package_script_or_die(package_name, "preinst");
|
---|
1659 |
|
---|
1660 | /* Don't overwrite existing config files */
|
---|
1661 | if (!(option_mask32 & OPT_force_confnew))
|
---|
1662 | append_control_file_to_llist(package_name, "conffiles", &conffile_list);
|
---|
1663 |
|
---|
1664 | /* Extract data.tar.gz to the root directory */
|
---|
1665 | archive_handle = init_archive_deb_ar(deb_file->filename);
|
---|
1666 | init_archive_deb_data(archive_handle);
|
---|
1667 | archive_handle->dpkg__sub_archive->accept = conffile_list;
|
---|
1668 | /* Why ARCHIVE_REMEMBER_NAMES?
|
---|
1669 | * We want names collected in ->passed list even if conffile_list
|
---|
1670 | * is NULL (otherwise get_header_tar may optimize name saving out):
|
---|
1671 | */
|
---|
1672 | archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_REMEMBER_NAMES | ARCHIVE_UNLINK_OLD;
|
---|
1673 | archive_handle->dpkg__sub_archive->filter = filter_rename_config;
|
---|
1674 | archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix;
|
---|
1675 | archive_handle->dpkg__sub_archive->dpkg__buffer = (char*)"/"; /* huh? */
|
---|
1676 | unpack_ar_archive(archive_handle);
|
---|
1677 |
|
---|
1678 | /* Create the list file */
|
---|
1679 | list_filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "list");
|
---|
1680 | out_stream = xfopen_for_write(list_filename);
|
---|
1681 | archive_handle->dpkg__sub_archive->passed = llist_rev(archive_handle->dpkg__sub_archive->passed);
|
---|
1682 | while (archive_handle->dpkg__sub_archive->passed) {
|
---|
1683 | char *filename = llist_pop(&archive_handle->dpkg__sub_archive->passed);
|
---|
1684 | /* the leading . has been stripped by data_extract_all_prefix already */
|
---|
1685 | fprintf(out_stream, "%s\n", filename);
|
---|
1686 | free(filename);
|
---|
1687 | }
|
---|
1688 | fclose(out_stream);
|
---|
1689 |
|
---|
1690 | /* change status */
|
---|
1691 | set_status(status_num, "install", 1);
|
---|
1692 | set_status(status_num, "unpacked", 3);
|
---|
1693 |
|
---|
1694 | free(info_prefix);
|
---|
1695 | free(list_filename);
|
---|
1696 | }
|
---|
1697 |
|
---|
1698 | static void configure_package(deb_file_t *deb_file)
|
---|
1699 | {
|
---|
1700 | const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
|
---|
1701 | const char *package_version = name_hashtable[package_hashtable[deb_file->package]->version];
|
---|
1702 | const int status_num = search_status_hashtable(package_name);
|
---|
1703 |
|
---|
1704 | printf("Setting up %s (%s)...\n", package_name, package_version);
|
---|
1705 |
|
---|
1706 | /* Run the postinst script */
|
---|
1707 | /* TODO: handle failure gracefully */
|
---|
1708 | run_package_script_or_die(package_name, "postinst");
|
---|
1709 |
|
---|
1710 | /* Change status to reflect success */
|
---|
1711 | set_status(status_num, "install", 1);
|
---|
1712 | set_status(status_num, "installed", 3);
|
---|
1713 | }
|
---|
1714 |
|
---|
1715 | int dpkg_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
1716 | int dpkg_main(int argc UNUSED_PARAM, char **argv)
|
---|
1717 | {
|
---|
1718 | deb_file_t **deb_file = NULL;
|
---|
1719 | status_node_t *status_node;
|
---|
1720 | char *str_f;
|
---|
1721 | int opt;
|
---|
1722 | int package_num;
|
---|
1723 | int deb_count = 0;
|
---|
1724 | int state_status;
|
---|
1725 | int status_num;
|
---|
1726 | int i;
|
---|
1727 | #if ENABLE_LONG_OPTS
|
---|
1728 | static const char dpkg_longopts[] ALIGN1 =
|
---|
1729 | // FIXME: we use -C non-compatibly, should be:
|
---|
1730 | // "-C|--audit Check for broken package(s)"
|
---|
1731 | "configure\0" No_argument "C"
|
---|
1732 | "force\0" Required_argument "F"
|
---|
1733 | "install\0" No_argument "i"
|
---|
1734 | "list\0" No_argument "l"
|
---|
1735 | "purge\0" No_argument "P"
|
---|
1736 | "remove\0" No_argument "r"
|
---|
1737 | "unpack\0" No_argument "u"
|
---|
1738 | "force-depends\0" No_argument "\xff"
|
---|
1739 | "force-confnew\0" No_argument "\xfe"
|
---|
1740 | "force-confold\0" No_argument "\xfd"
|
---|
1741 | ;
|
---|
1742 | #endif
|
---|
1743 |
|
---|
1744 | INIT_G();
|
---|
1745 |
|
---|
1746 | IF_LONG_OPTS(applet_long_options = dpkg_longopts);
|
---|
1747 | opt = getopt32(argv, "CilPruF:", &str_f);
|
---|
1748 | argv += optind;
|
---|
1749 | //if (opt & OPT_configure) ... // -C
|
---|
1750 | if (opt & OPT_force) { // -F (--force in official dpkg)
|
---|
1751 | if (strcmp(str_f, "depends") == 0)
|
---|
1752 | opt |= OPT_force_ignore_depends;
|
---|
1753 | else if (strcmp(str_f, "confnew") == 0)
|
---|
1754 | opt |= OPT_force_confnew;
|
---|
1755 | else if (strcmp(str_f, "confold") == 0)
|
---|
1756 | opt |= OPT_force_confold;
|
---|
1757 | else
|
---|
1758 | bb_show_usage();
|
---|
1759 | option_mask32 = opt;
|
---|
1760 | }
|
---|
1761 | //if (opt & OPT_install) ... // -i
|
---|
1762 | //if (opt & OPT_list_installed) ... // -l
|
---|
1763 | //if (opt & OPT_purge) ... // -P
|
---|
1764 | //if (opt & OPT_remove) ... // -r
|
---|
1765 | //if (opt & OPT_unpack) ... // -u (--unpack in official dpkg)
|
---|
1766 | if (!(opt & OPTMASK_cmd) /* no cmd */
|
---|
1767 | || ((opt & OPTMASK_cmd) & ((opt & OPTMASK_cmd)-1)) /* more than one cmd */
|
---|
1768 | ) {
|
---|
1769 | bb_show_usage();
|
---|
1770 | }
|
---|
1771 |
|
---|
1772 | /* puts("(Reading database ... xxxxx files and directories installed.)"); */
|
---|
1773 | index_status_file("/var/lib/dpkg/status");
|
---|
1774 |
|
---|
1775 | /* if the list action was given print the installed packages and exit */
|
---|
1776 | if (opt & OPT_list_installed) {
|
---|
1777 | list_packages(argv[0]); /* param can be NULL */
|
---|
1778 | return EXIT_SUCCESS;
|
---|
1779 | }
|
---|
1780 |
|
---|
1781 | /* Read arguments and store relevant info in structs */
|
---|
1782 | while (*argv) {
|
---|
1783 | /* deb_count = nb_elem - 1 and we need nb_elem + 1 to allocate terminal node [NULL pointer] */
|
---|
1784 | deb_file = xrealloc_vector(deb_file, 2, deb_count);
|
---|
1785 | deb_file[deb_count] = xzalloc(sizeof(deb_file[0][0]));
|
---|
1786 | if (opt & (OPT_install | OPT_unpack)) {
|
---|
1787 | /* -i/-u: require filename */
|
---|
1788 | archive_handle_t *archive_handle;
|
---|
1789 | llist_t *control_list = NULL;
|
---|
1790 |
|
---|
1791 | /* Extract the control file */
|
---|
1792 | llist_add_to(&control_list, (char*)"./control");
|
---|
1793 | archive_handle = init_archive_deb_ar(argv[0]);
|
---|
1794 | init_archive_deb_control(archive_handle);
|
---|
1795 | deb_file[deb_count]->control_file = deb_extract_control_file_to_buffer(archive_handle, control_list);
|
---|
1796 | if (deb_file[deb_count]->control_file == NULL) {
|
---|
1797 | bb_error_msg_and_die("can't extract control file");
|
---|
1798 | }
|
---|
1799 | deb_file[deb_count]->filename = xstrdup(argv[0]);
|
---|
1800 | package_num = fill_package_struct(deb_file[deb_count]->control_file);
|
---|
1801 |
|
---|
1802 | if (package_num == -1) {
|
---|
1803 | bb_error_msg("invalid control file in %s", argv[0]);
|
---|
1804 | argv++;
|
---|
1805 | continue;
|
---|
1806 | }
|
---|
1807 | deb_file[deb_count]->package = (unsigned) package_num;
|
---|
1808 |
|
---|
1809 | /* Add the package to the status hashtable */
|
---|
1810 | if (opt & (OPT_unpack | OPT_install)) {
|
---|
1811 | /* Try and find a currently installed version of this package */
|
---|
1812 | status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
|
---|
1813 | /* If no previous entry was found initialise a new entry */
|
---|
1814 | if (status_hashtable[status_num] == NULL
|
---|
1815 | || status_hashtable[status_num]->status == 0
|
---|
1816 | ) {
|
---|
1817 | status_node = xmalloc(sizeof(status_node_t));
|
---|
1818 | status_node->package = deb_file[deb_count]->package;
|
---|
1819 | /* reinstreq isnt changed to "ok" until the package control info
|
---|
1820 | * is written to the status file*/
|
---|
1821 | status_node->status = search_name_hashtable("install reinstreq not-installed");
|
---|
1822 | status_hashtable[status_num] = status_node;
|
---|
1823 | } else {
|
---|
1824 | set_status(status_num, "install", 1);
|
---|
1825 | set_status(status_num, "reinstreq", 2);
|
---|
1826 | }
|
---|
1827 | }
|
---|
1828 | } else if (opt & (OPT_configure | OPT_purge | OPT_remove)) {
|
---|
1829 | /* -C/-p/-r: require package name */
|
---|
1830 | deb_file[deb_count]->package = search_package_hashtable(
|
---|
1831 | search_name_hashtable(argv[0]),
|
---|
1832 | search_name_hashtable("ANY"), VER_ANY);
|
---|
1833 | if (package_hashtable[deb_file[deb_count]->package] == NULL) {
|
---|
1834 | bb_error_msg_and_die("package %s is uninstalled or unknown", argv[0]);
|
---|
1835 | }
|
---|
1836 | package_num = deb_file[deb_count]->package;
|
---|
1837 | status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
|
---|
1838 | state_status = get_status(status_num, 3);
|
---|
1839 |
|
---|
1840 | /* check package status is "installed" */
|
---|
1841 | if (opt & OPT_remove) {
|
---|
1842 | if (strcmp(name_hashtable[state_status], "not-installed") == 0
|
---|
1843 | || strcmp(name_hashtable[state_status], "config-files") == 0
|
---|
1844 | ) {
|
---|
1845 | bb_error_msg_and_die("%s is already removed", name_hashtable[package_hashtable[package_num]->name]);
|
---|
1846 | }
|
---|
1847 | set_status(status_num, "deinstall", 1);
|
---|
1848 | } else if (opt & OPT_purge) {
|
---|
1849 | /* if package status is "conf-files" then its ok */
|
---|
1850 | if (strcmp(name_hashtable[state_status], "not-installed") == 0) {
|
---|
1851 | bb_error_msg_and_die("%s is already purged", name_hashtable[package_hashtable[package_num]->name]);
|
---|
1852 | }
|
---|
1853 | set_status(status_num, "purge", 1);
|
---|
1854 | }
|
---|
1855 | }
|
---|
1856 | deb_count++;
|
---|
1857 | argv++;
|
---|
1858 | }
|
---|
1859 | if (!deb_count)
|
---|
1860 | bb_error_msg_and_die("no package files specified");
|
---|
1861 | deb_file[deb_count] = NULL;
|
---|
1862 |
|
---|
1863 | /* Check that the deb file arguments are installable */
|
---|
1864 | if (!(opt & OPT_force_ignore_depends)) {
|
---|
1865 | if (!check_deps(deb_file, 0 /*, deb_count*/)) {
|
---|
1866 | bb_error_msg_and_die("dependency check failed");
|
---|
1867 | }
|
---|
1868 | }
|
---|
1869 |
|
---|
1870 | /* TODO: install or remove packages in the correct dependency order */
|
---|
1871 | for (i = 0; i < deb_count; i++) {
|
---|
1872 | /* Remove or purge packages */
|
---|
1873 | if (opt & OPT_remove) {
|
---|
1874 | remove_package(deb_file[i]->package, 1);
|
---|
1875 | }
|
---|
1876 | else if (opt & OPT_purge) {
|
---|
1877 | purge_package(deb_file[i]->package);
|
---|
1878 | }
|
---|
1879 | else if (opt & OPT_unpack) {
|
---|
1880 | unpack_package(deb_file[i]);
|
---|
1881 | }
|
---|
1882 | else if (opt & OPT_install) {
|
---|
1883 | unpack_package(deb_file[i]);
|
---|
1884 | /* package is configured in second pass below */
|
---|
1885 | }
|
---|
1886 | else if (opt & OPT_configure) {
|
---|
1887 | configure_package(deb_file[i]);
|
---|
1888 | }
|
---|
1889 | }
|
---|
1890 | /* configure installed packages */
|
---|
1891 | if (opt & OPT_install) {
|
---|
1892 | for (i = 0; i < deb_count; i++)
|
---|
1893 | configure_package(deb_file[i]);
|
---|
1894 | }
|
---|
1895 |
|
---|
1896 | write_status_file(deb_file);
|
---|
1897 |
|
---|
1898 | if (ENABLE_FEATURE_CLEAN_UP) {
|
---|
1899 | for (i = 0; i < deb_count; i++) {
|
---|
1900 | free(deb_file[i]->control_file);
|
---|
1901 | free(deb_file[i]->filename);
|
---|
1902 | free(deb_file[i]);
|
---|
1903 | }
|
---|
1904 |
|
---|
1905 | free(deb_file);
|
---|
1906 |
|
---|
1907 | for (i = 0; i < NAME_HASH_PRIME; i++) {
|
---|
1908 | free(name_hashtable[i]);
|
---|
1909 | }
|
---|
1910 |
|
---|
1911 | for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
|
---|
1912 | free_package(package_hashtable[i]);
|
---|
1913 | }
|
---|
1914 |
|
---|
1915 | for (i = 0; i < STATUS_HASH_PRIME; i++) {
|
---|
1916 | free(status_hashtable[i]);
|
---|
1917 | }
|
---|
1918 |
|
---|
1919 | free(status_hashtable);
|
---|
1920 | free(package_hashtable);
|
---|
1921 | free(name_hashtable);
|
---|
1922 | }
|
---|
1923 |
|
---|
1924 | return EXIT_SUCCESS;
|
---|
1925 | }
|
---|