Fri, 29 May 2015 09:48:10 +0200
added initial code for config commands
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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 2015 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 <sys/types.h> |
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33 | #include <ucx/map.h> |
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34 | #include <errno.h> |
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35 | #include <libxml/tree.h> |
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36 | |
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37 | #include "config.h" |
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38 | #include <libidav/utils.h> |
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39 | |
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40 | #define xstreq(a,b) xmlStrEqual(BAD_CAST a, BAD_CAST b) |
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41 | #define xstrEQ(a,b) !xmlStrcasecmp(BAD_CAST a, BAD_CAST b) |
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42 | |
32 | 43 | #ifdef _WIN32 |
44 | #define ENV_HOME getenv("USERPROFILE") | |
45 | #else | |
46 | #define ENV_HOME getenv("HOME") | |
47 | #endif /* _WIN32 */ | |
48 | ||
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49 | static UcxMap *repos; |
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50 | static UcxMap *keys; |
36 | 51 | static Proxy *http_proxy; |
52 | static Proxy *https_proxy; | |
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53 | |
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54 | int check_config_dir() { |
32 | 55 | char *file = util_concat_path(ENV_HOME, ".dav"); |
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56 | int ret = 0; |
32 | 57 | if(util_mkdir(file, S_IRWXU)) { |
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58 | if(errno != EEXIST) { |
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59 | ret = 1; |
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60 | } |
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61 | } |
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62 | free(file); |
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63 | return ret; |
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64 | } |
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65 | |
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66 | static DavContext *context; |
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67 | |
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68 | void load_config(DavContext *ctx) { |
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69 | context = ctx; |
36 | 70 | // TODO: free the config somewhere |
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71 | repos = ucx_map_new(16); |
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72 | keys = ucx_map_new(16); |
36 | 73 | http_proxy = calloc(1, sizeof(Proxy)); |
74 | https_proxy = calloc(1, sizeof(Proxy)); | |
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75 | if(check_config_dir()) { |
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76 | return; |
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77 | } |
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78 | |
32 | 79 | char *file = util_concat_path(ENV_HOME, ".dav/config.xml"); |
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80 | xmlDoc *doc = xmlReadFile(file, NULL, 0); |
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81 | if(!doc) { |
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82 | doc = xmlNewDoc(BAD_CAST "1.0"); |
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83 | xmlNode *root = xmlNewNode(NULL, BAD_CAST "configuration"); |
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84 | xmlDocSetRootElement(doc, root); |
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85 | xmlSaveFormatFileEnc(file, doc, "UTF-8", 1); |
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86 | xmlFreeDoc(doc); |
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87 | free(file); |
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88 | return; |
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89 | } |
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90 | free(file); |
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91 | |
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92 | xmlNode *xml_root = xmlDocGetRootElement(doc); |
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93 | xmlNode *node = xml_root->children; |
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94 | while(node) { |
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95 | if(node->type == XML_ELEMENT_NODE) { |
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96 | if(xstreq(node->name, "repository")) { |
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97 | load_repository(node); |
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98 | } else if(xstreq(node->name, "key")) { |
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99 | load_key(node); |
36 | 100 | } else if (xstreq(node->name, "http-proxy")) { |
101 | load_proxy(node, HTTP_PROXY); | |
102 | } else if (xstreq(node->name, "https-proxy")) { | |
103 | load_proxy(node, HTTPS_PROXY); | |
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104 | } |
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105 | } |
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106 | node = node->next; |
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107 | } |
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108 | |
9 | 109 | xmlFreeDoc(doc); |
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110 | } |
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111 | |
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112 | void free_config() { |
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113 | UcxMapIterator i = ucx_map_iterator(repos); |
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114 | UcxKey k; |
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115 | Repository *repo; |
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116 | UCX_MAP_FOREACH(k, repo, i) { |
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117 | if(repo->default_key) { |
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118 | free(repo->default_key); |
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119 | } |
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120 | if(repo->name) { |
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121 | free(repo->name); |
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122 | } |
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123 | if(repo->password) { |
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124 | free(repo->password); |
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125 | } |
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126 | if(repo->url) { |
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127 | free(repo->url); |
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128 | } |
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129 | if(repo->user) { |
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130 | free(repo->user); |
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131 | } |
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132 | free(repo); |
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133 | } |
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134 | ucx_map_free(repos); |
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135 | |
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136 | ucx_map_free(keys); |
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137 | } |
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138 | |
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139 | Repository* repository_new() { |
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140 | Repository *repo = calloc(1, sizeof(Repository)); |
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141 | repo->encrypt_name = false; |
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142 | repo->encrypt_content = false; |
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143 | repo->decrypt_name = false; |
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144 | repo->decrypt_content = true; |
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145 | repo->ssl_version = CURL_SSLVERSION_DEFAULT; |
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146 | return repo; |
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147 | } |
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148 | |
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149 | void load_repository(xmlNode *reponode) { |
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150 | xmlNode *node = reponode->children; |
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151 | Repository *repo = repository_new(); |
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152 | while(node) { |
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153 | if(node->type == XML_ELEMENT_NODE) { |
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154 | char *name = (char*)node->name; |
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155 | char *value = util_xml_get_text(node); |
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156 | if(value) { |
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157 | if(repo_add_config(repo, name, value)) { |
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158 | fprintf( |
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159 | stderr, |
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160 | "Unkown repository config element: %s\n", |
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161 | name); |
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162 | } |
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163 | } |
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164 | } |
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165 | node = node->next; |
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166 | } |
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167 | |
21 | 168 | if(!repo->name) { |
169 | fprintf( | |
170 | stderr, | |
171 | "Cannot load config.xml: missing name for repository.\n"); | |
172 | fprintf(stderr, "Abort.\n"); | |
173 | exit(-1); | |
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174 | } |
21 | 175 | if(!repo->url) { |
176 | fprintf( | |
177 | stderr, | |
178 | "Cannot load config.xml: " | |
179 | "missing url for repository '%s'.\n", repo->name); | |
180 | fprintf(stderr, "Abort.\n"); | |
181 | exit(-1); | |
182 | } | |
183 | ||
184 | ucx_map_cstr_put(repos, repo->name, repo); | |
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185 | } |
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186 | |
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187 | int repo_add_config(Repository *repo, char *key, char *value) { |
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188 | if(xstreq(key, "name")) { |
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189 | repo->name = strdup(value); |
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190 | } else if(xstreq(key, "url")) { |
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191 | repo->url = strdup(value); |
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192 | } else if(xstreq(key, "user")) { |
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193 | repo->user = strdup(value); |
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194 | } else if(xstreq(key, "password")) { |
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195 | repo->password = util_base64decode(value); |
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196 | } else if(xstreq(key, "default-key")) { |
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197 | repo->default_key = strdup(value); |
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198 | } else if(xstreq(key, "full-encryption")) { |
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199 | if(util_getboolean(value)) { |
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200 | repo->encrypt_name = true; |
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201 | repo->encrypt_content = true; |
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202 | repo->decrypt_name = true; |
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203 | repo->decrypt_content = true; |
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204 | } |
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205 | } else if(xstreq(key, "content-encryption")) { |
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206 | if(util_getboolean(value)) { |
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207 | repo->encrypt_content = true; |
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208 | repo->decrypt_content = true; |
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209 | } else { |
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210 | repo->encrypt_content = false; |
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211 | } |
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212 | } else if(xstreq(key, "decrypt-content")) { |
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213 | repo->decrypt_content = util_getboolean(value); |
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214 | } else if(xstreq(key, "decrypt-name")) { |
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215 | repo->decrypt_name = util_getboolean(value); |
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216 | } else if(xstreq(key, "ssl-version")) { |
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217 | if(xstrEQ(value, "TLSv1")) { |
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218 | repo->ssl_version = CURL_SSLVERSION_TLSv1; |
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219 | } else if(xstrEQ(value, "SSLv2")) { |
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220 | repo->ssl_version = CURL_SSLVERSION_SSLv2; |
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221 | } else if(xstrEQ(value, "SSLv3")) { |
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222 | repo->ssl_version = CURL_SSLVERSION_SSLv3; |
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223 | } |
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224 | #if LIBCURL_VERSION_MAJOR >= 7 |
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225 | #if LIBCURL_VERSION_MINOR >= 34 |
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226 | else if(xstrEQ(value, "TLSv1.0")) { |
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227 | repo->ssl_version = CURL_SSLVERSION_TLSv1_0; |
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228 | } else if(xstrEQ(value, "TLSv1.1")) { |
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229 | repo->ssl_version = CURL_SSLVERSION_TLSv1_1; |
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230 | } else if(xstrEQ(value, "TLSv1.2")) { |
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231 | repo->ssl_version = CURL_SSLVERSION_TLSv1_2; |
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232 | } |
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233 | #endif |
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234 | #endif |
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235 | else { |
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236 | fprintf(stderr, "Unknown ssl version: %s\n", value); |
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237 | } |
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238 | } else { |
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239 | return -1; |
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240 | } |
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241 | return 0; |
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242 | } |
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243 | |
36 | 244 | void load_proxy(xmlNode *proxynode, int type) { |
245 | Proxy *proxy; | |
246 | const char *stype; | |
247 | if (type == HTTPS_PROXY) { | |
248 | proxy = https_proxy; | |
249 | stype = "https"; | |
250 | } else if (type == HTTP_PROXY) { | |
251 | proxy = http_proxy; | |
252 | stype = "http"; | |
253 | } | |
254 | ||
255 | xmlNode *node = proxynode->children; | |
256 | while(node) { | |
257 | if(node->type == XML_ELEMENT_NODE) { | |
258 | char *value = util_xml_get_text(node); | |
259 | if(!value) { | |
260 | // next | |
261 | } else if(xstreq(node->name, "url")) { | |
262 | proxy->url = strdup(value); | |
263 | } else if(xstreq(node->name, "user")) { | |
264 | proxy->user = strdup(value); | |
265 | } else if(xstreq(node->name, "password")) { | |
266 | proxy->password = util_base64decode(value); | |
267 | } else if(xstreq(node->name, "no")) { | |
268 | proxy->no = strdup(value); | |
269 | } | |
270 | } | |
271 | node = node->next; | |
272 | } | |
273 | ||
274 | if(!proxy->url) { | |
275 | fprintf(stderr, | |
276 | "Cannot load config.xml: missing url for %s proxy.\n", stype); | |
277 | fprintf(stderr, "Abort.\n"); | |
278 | exit(-1); | |
279 | } | |
280 | } | |
281 | ||
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282 | void load_key(xmlNode *keynode) { |
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283 | xmlNode *node = keynode->children; |
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284 | Key *key = calloc(1, sizeof(Key)); |
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285 | key->type = KEY_AES256; |
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286 | |
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287 | while(node) { |
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288 | if(node->type == XML_ELEMENT_NODE) { |
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289 | char *value = util_xml_get_text(node); |
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290 | if(!value) { |
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291 | // next |
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292 | } else if(xstreq(node->name, "name")) { |
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293 | key->name = strdup(value); |
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294 | } else if(xstreq(node->name, "file")) { |
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295 | // load key file |
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296 | sstr_t key_data = load_key_file(value); |
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297 | if(key_data.length > 0) { |
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298 | key->data = key_data.ptr; |
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299 | key->length = key_data.length; |
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300 | } |
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301 | } else if(xstreq(node->name, "type")) { |
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302 | if(!strcmp(value, "aes128")) { |
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303 | key->type = KEY_AES128; |
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304 | } else if(!strcmp(value, "aes256")) { |
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305 | key->type = KEY_AES256; |
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306 | } |
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307 | } |
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308 | |
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309 | } |
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310 | node = node->next; |
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311 | } |
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312 | |
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313 | if(key->name) { |
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314 | if(key->type == KEY_AES128) { |
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315 | if(key->length < 16) { |
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316 | return; |
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317 | } |
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318 | key->length = 16; |
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319 | } |
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320 | if(key->type == KEY_AES256) { |
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321 | if(key->length < 32) { |
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322 | return; |
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323 | } |
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324 | key->length = 32; |
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325 | } |
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326 | ucx_map_cstr_put(keys, key->name, key); |
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327 | dav_context_add_key(context, key); |
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328 | } else { |
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329 | // TODO: free |
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330 | } |
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331 | } |
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332 | |
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333 | sstr_t load_key_file(char *filename) { |
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334 | sstr_t k; |
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335 | k.ptr = NULL; |
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336 | k.length = 0; |
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337 | |
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338 | FILE *file = NULL; |
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339 | if(filename[0] == '/') { |
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340 | file = fopen(filename, "r"); |
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341 | } else { |
32 | 342 | char *path = util_concat_path(ENV_HOME, ".dav/"); |
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343 | char *p2 = util_concat_path(path, filename); |
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344 | file = fopen(p2, "r"); |
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345 | free(path); |
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346 | free(p2); |
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347 | } |
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348 | |
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349 | if(!file) { |
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350 | return k; |
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351 | } |
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352 | |
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353 | char *data = malloc(256); |
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354 | size_t r = fread(data, 1, 256, file); |
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355 | k.ptr = data; |
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356 | k.length = r; |
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357 | |
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358 | fclose(file); |
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359 | return k; |
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360 | } |
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361 | |
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362 | Repository* get_repository(sstr_t name) { |
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363 | if(!name.ptr) { |
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364 | return NULL; |
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365 | } |
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366 | return ucx_map_sstr_get(repos, name); |
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367 | } |
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368 | |
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369 | int get_repository_flags(Repository *repo) { |
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370 | int flags = 0; |
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371 | if(repo->decrypt_content) { |
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372 | flags |= DAV_SESSION_DECRYPT_CONTENT; |
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373 | } |
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374 | if(repo->decrypt_name) { |
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375 | flags |= DAV_SESSION_DECRYPT_NAME; |
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376 | } |
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377 | if(repo->encrypt_content) { |
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378 | flags |= DAV_SESSION_ENCRYPT_CONTENT; |
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379 | } |
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380 | if(repo->encrypt_name) { |
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381 | flags |= DAV_SESSION_ENCRYPT_NAME; |
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382 | } |
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383 | return flags; |
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384 | } |
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385 | |
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386 | |
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387 | Key* get_key(char *name) { |
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388 | if(!name) { |
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389 | return NULL; |
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390 | } |
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391 | return ucx_map_cstr_get(keys, name); |
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392 | } |
36 | 393 | |
394 | Proxy* get_http_proxy() { | |
395 | return http_proxy; | |
396 | } | |
397 | ||
398 | Proxy* get_https_proxy() { | |
399 | return https_proxy; | |
400 | } | |
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401 |