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