Mon, 12 Aug 2013 14:40:19 +0200
new webdav api + repository and key configuration + aes encryption
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new webdav api + repository and key configuration + aes encryption
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1 | /* |
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2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 | * |
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4 | * Copyright 2013 Olaf Wintermann. All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions are met: |
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8 | * |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | #include <stdio.h> |
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30 | #include <stdlib.h> |
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31 | #include <string.h> |
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32 | #include <ucx/map.h> |
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33 | #include <libxml/tree.h> |
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34 | |
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35 | #include "config.h" |
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36 | #include "utils.h" |
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37 | |
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38 | #define xstreq(a,b) xmlStrEqual(BAD_CAST a, BAD_CAST b) |
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39 | |
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40 | static UcxMap *repos; |
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41 | static UcxMap *keys; |
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42 | |
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43 | void load_config() { |
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44 | repos = ucx_map_new(16); |
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45 | keys = ucx_map_new(16); |
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46 | |
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47 | char *file = util_concat_path(getenv("HOME"), ".dav/config.xml"); |
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48 | xmlDoc *doc = xmlReadFile(file, NULL, 0); |
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49 | free(file); |
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50 | |
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51 | xmlNode *xml_root = xmlDocGetRootElement(doc); |
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52 | xmlNode *node = xml_root->children; |
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53 | while(node) { |
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54 | if(node->type == XML_ELEMENT_NODE) { |
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55 | if(xstreq(node->name, "repository")) { |
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56 | load_repository(node); |
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57 | } else if(xstreq(node->name, "key")) { |
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58 | load_key(node); |
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59 | } |
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60 | } |
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61 | node = node->next; |
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62 | } |
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63 | |
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64 | // TODO: free doc |
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65 | } |
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66 | |
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67 | void load_repository(xmlNode *reponode) { |
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68 | xmlNode *node = reponode->children; |
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69 | Repository *repo = calloc(1, sizeof(Repository)); |
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70 | repo->store_key_property = true; |
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71 | repo->decrypt = true; |
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72 | while(node) { |
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73 | if(node->type == XML_ELEMENT_NODE) { |
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74 | char *value = util_xml_get_text(node); |
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75 | if(!value) { |
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76 | // next |
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77 | } else if(xstreq(node->name, "name")) { |
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78 | repo->name = strdup(value); |
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79 | } else if(xstreq(node->name, "url")) { |
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80 | repo->url = strdup(value); |
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81 | } else if(xstreq(node->name, "user")) { |
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82 | repo->user = strdup(value); |
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83 | } else if(xstreq(node->name, "password")) { |
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84 | // TODO: use base64 |
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85 | repo->password = strdup(value); |
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86 | } else if(xstreq(node->name, "default-key")) { |
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87 | repo->default_key = strdup(value); |
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88 | } else if(xstreq(node->name, "encrypt")) { |
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89 | repo->encrypt = util_getboolean(value); |
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90 | } else if(xstreq(node->name, "decrypt")) { |
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91 | repo->decrypt = util_getboolean(value); |
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92 | } else if(xstreq(node->name, "store-key-property")) { |
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93 | repo->store_key_property = util_getboolean(value); |
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94 | } |
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95 | } |
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96 | node = node->next; |
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97 | } |
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98 | |
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99 | if(repo->name) { |
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100 | ucx_map_cstr_put(repos, repo->name, repo); |
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101 | } else { |
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102 | // TODO: free |
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103 | } |
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104 | } |
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105 | |
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106 | void load_key(xmlNode *keynode) { |
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107 | xmlNode *node = keynode->children; |
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108 | Key *key = calloc(1, sizeof(Key)); |
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109 | key->type = KEY_AES256; |
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110 | |
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111 | while(node) { |
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112 | if(node->type == XML_ELEMENT_NODE) { |
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113 | char *value = util_xml_get_text(node); |
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114 | if(!value) { |
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115 | // next |
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116 | } else if(xstreq(node->name, "name")) { |
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117 | key->name = strdup(value); |
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118 | } else if(xstreq(node->name, "file")) { |
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119 | // load key file |
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120 | sstr_t key_data = load_key_file(value); |
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121 | if(key_data.length > 0) { |
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122 | key->data = key_data.ptr; |
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123 | key->length = key_data.length; |
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124 | } |
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125 | } else if(xstreq(node->name, "type")) { |
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126 | if(!strcmp(value, "aes128")) { |
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127 | key->type = KEY_AES128; |
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128 | } else if(!strcmp(value, "aes256")) { |
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129 | key->type = KEY_AES256; |
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130 | } |
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131 | } |
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132 | |
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133 | } |
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134 | node = node->next; |
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135 | } |
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136 | |
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137 | if(key->name) { |
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138 | if(key->type == KEY_AES128) { |
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139 | if(key->length < 16) { |
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140 | return; |
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141 | } |
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142 | key->length = 16; |
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143 | } |
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144 | if(key->type == KEY_AES256) { |
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145 | if(key->length < 32) { |
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146 | return; |
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147 | } |
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148 | key->length = 32; |
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149 | } |
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150 | ucx_map_cstr_put(keys, key->name, key); |
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151 | } else { |
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152 | // TODO: free |
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153 | } |
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154 | } |
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155 | |
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156 | sstr_t load_key_file(char *filename) { |
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157 | sstr_t k; |
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158 | k.ptr = NULL; |
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159 | k.length = 0; |
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160 | |
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161 | FILE *file = NULL; |
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162 | if(filename[0] == '/') { |
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163 | file = fopen(filename, "r"); |
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164 | } else { |
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165 | char *path = util_concat_path(getenv("HOME"), ".dav/"); |
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166 | char *p2 = util_concat_path(path, filename); |
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167 | file = fopen(p2, "r"); |
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168 | free(path); |
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169 | free(p2); |
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170 | } |
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171 | |
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172 | if(!file) { |
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173 | return k; |
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174 | } |
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175 | |
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176 | char *data = malloc(256); |
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177 | size_t r = fread(data, 1, 256, file); |
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178 | k.ptr = data; |
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179 | k.length = r; |
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180 | |
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181 | fclose(file); |
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182 | return k; |
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183 | } |
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184 | |
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185 | Repository* get_repository(char *name) { |
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186 | if(!name) { |
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187 | return NULL; |
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188 | } |
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189 | return ucx_map_cstr_get(repos, name); |
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190 | } |
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191 | |
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192 | Key* get_key(char *name) { |
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193 | if(!name) { |
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194 | return NULL; |
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195 | } |
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196 | return ucx_map_cstr_get(keys, name); |
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197 | } |