Sun, 09 Nov 2014 14:33:23 +0100
some bug fixes
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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 2014 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 | |
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33 | #include <ucx/buffer.h> |
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34 | #include <ucx/utils.h> |
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35 | |
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36 | #include "utils.h" |
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37 | #include "session.h" |
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38 | #include "resource.h" |
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39 | #include "methods.h" |
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40 | |
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41 | DavSession* dav_session_new(DavContext *context, char *base_url) { |
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42 | if(!base_url) { |
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43 | return NULL; |
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44 | } |
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45 | sstr_t url = sstr(base_url); |
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46 | if(url.length == 0) { |
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47 | return NULL; |
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48 | } |
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49 | DavSession *sn = malloc(sizeof(DavSession)); |
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50 | sn->mp = ucx_mempool_new(DAV_SESSION_MEMPOOL_SIZE); |
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51 | sn->pathcache = ucx_map_new_a(sn->mp->allocator, DAV_PATH_CACHE_SIZE); |
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52 | sn->key = NULL; |
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53 | sn->errorstr = NULL; |
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54 | sn->error = DAV_OK; |
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55 | sn->flags = 0; |
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56 | if(url.ptr[url.length - 1] == '/') { |
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57 | sstr_t url = sstrdup_a(sn->mp->allocator, sstr(base_url)); |
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58 | sn->base_url = url.ptr; |
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59 | } else { |
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60 | char *url_str = malloc(url.length + 2); |
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61 | memcpy(url_str, base_url, url.length); |
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62 | url_str[url.length] = '/'; |
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63 | url_str[url.length + 1] = '\0'; |
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64 | sn->base_url = url_str; |
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65 | } |
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66 | sn->context = context; |
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67 | sn->handle = curl_easy_init(); |
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68 | //curl_easy_setopt(sn->handle, CURLOPT_VERBOSE, 1L); |
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69 | //curl_easy_setopt(sn->handle, CURLOPT_STDERR, stderr); |
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70 | curl_easy_setopt(sn->handle, CURLOPT_FOLLOWLOCATION, 1L); |
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71 | |
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72 | // set proxy |
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73 | DavProxy *proxy = sstrprefix(url, S("https")) ? context->https_proxy |
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74 | : context->http_proxy; |
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75 | |
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76 | if (proxy->url) { |
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77 | curl_easy_setopt(sn->handle, CURLOPT_PROXY, proxy->url); |
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78 | if (proxy->username) { |
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79 | curl_easy_setopt(sn->handle, CURLOPT_PROXYUSERNAME, |
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80 | proxy->username); |
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81 | if (proxy->password) { |
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82 | curl_easy_setopt(sn->handle, CURLOPT_PROXYPASSWORD, |
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83 | proxy->password); |
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84 | } else { |
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85 | // TODO: prompt |
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86 | } |
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87 | } |
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88 | if(proxy->no_proxy) { |
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89 | curl_easy_setopt(sn->handle, CURLOPT_NOPROXY, |
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90 | proxy->no_proxy); |
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91 | } |
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92 | } |
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93 | |
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94 | // set url |
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95 | curl_easy_setopt(sn->handle, CURLOPT_URL, base_url); |
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96 | |
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97 | context->sessions = ucx_list_append(context->sessions, sn); |
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98 | |
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99 | return sn; |
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100 | } |
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101 | |
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102 | DavSession* dav_session_new_auth( |
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103 | DavContext *context, |
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104 | char *base_url, |
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105 | char *user, |
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106 | char *password) |
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107 | { |
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108 | DavSession *sn = dav_session_new(context, base_url); |
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109 | if(!sn) { |
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110 | return NULL; |
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111 | } |
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112 | dav_session_set_auth(sn, user, password); |
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113 | return sn; |
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114 | } |
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115 | |
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116 | void dav_session_set_auth(DavSession *sn, char *user, char *password) { |
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117 | if(user && password) { |
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118 | size_t ulen = strlen(user); |
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119 | size_t plen = strlen(password); |
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120 | size_t upwdlen = ulen + plen + 2; |
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121 | char *upwdbuf = malloc(upwdlen); |
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122 | snprintf(upwdbuf, upwdlen, "%s:%s\0", user, password); |
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123 | curl_easy_setopt(sn->handle, CURLOPT_USERPWD, upwdbuf); |
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124 | free(upwdbuf); |
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125 | } |
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126 | } |
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127 | |
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128 | void dav_session_set_flags(DavSession *sn, uint32_t flags) { |
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129 | sn->flags = flags; |
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130 | } |
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131 | |
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132 | uint32_t dav_session_get_flags(DavSession *sn) { |
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133 | return sn->flags; |
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134 | } |
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135 | |
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136 | void dav_session_enable_encryption(DavSession *sn, DavKey *key, int flags) { |
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137 | sn->key = key; |
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138 | if(flags != 0) { |
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139 | sn->flags |= flags; |
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140 | } else { |
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141 | sn->flags |= DAV_SESSION_ENCRYPT_CONTENT; |
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142 | } |
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143 | } |
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144 | |
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145 | void dav_session_set_error(DavSession *sn, CURLcode c, int status) { |
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146 | if(status > 0) { |
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147 | switch(status) { |
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148 | default: sn->error = DAV_ERROR; break; |
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149 | case 401: sn->error = DAV_UNAUTHORIZED; break; |
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150 | case 403: sn->error = DAV_FORBIDDEN; break; |
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151 | case 404: sn->error = DAV_NOT_FOUND; break; |
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152 | case 405: sn->error = DAV_METHOD_NOT_ALLOWED; break; |
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153 | case 409: sn->error = DAV_CONFLICT; break; |
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154 | } |
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155 | } else { |
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156 | sn->error = DAV_ERROR; |
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157 | } |
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158 | if(c != CURLE_OK) { |
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159 | sn->errorstr = curl_easy_strerror(c); |
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160 | } else { |
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161 | sn->errorstr = NULL; |
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162 | } |
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163 | } |
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164 | |
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165 | void dav_session_destroy(DavSession *sn) { |
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166 | // remove session from context |
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167 | UcxList *sessions = sn->context->sessions; |
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168 | ssize_t i = ucx_list_find(sessions, sn, ucx_ptrcmp, NULL); |
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169 | if(i > 0) { |
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170 | UcxList *elm = ucx_list_get(sessions, i); |
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171 | if(elm) { |
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172 | sn->context->sessions = ucx_list_remove(sessions, elm); |
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173 | } |
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174 | } |
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175 | |
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176 | ucx_mempool_destroy(sn->mp); |
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177 | curl_easy_cleanup(sn->handle); |
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178 | free(sn); |
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179 | } |
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180 | |
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181 | |
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182 | void* dav_session_malloc(DavSession *sn, size_t size) { |
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183 | return ucx_mempool_malloc(sn->mp, size); |
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184 | } |
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185 | |
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186 | void* dav_session_calloc(DavSession *sn, size_t nelm, size_t size) { |
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187 | return ucx_mempool_calloc(sn->mp, nelm, size); |
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188 | } |
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189 | |
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190 | void* dav_session_realloc(DavSession *sn, void *ptr, size_t size) { |
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191 | return ucx_mempool_realloc(sn->mp, ptr, size); |
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192 | } |
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193 | |
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194 | void dav_session_free(DavSession *sn, void *ptr) { |
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195 | ucx_mempool_free(sn->mp, ptr); |
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196 | } |
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197 | |
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198 | char* dav_session_strdup(DavSession *sn, char *str) { |
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199 | return sstrdup_a(sn->mp->allocator, sstr(str)).ptr; |
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200 | } |
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201 | |
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202 | |
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203 | char* dav_session_create_plain_href(DavSession *sn, char *path) { |
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204 | if(!DAV_ENCRYPT_NAME(sn)) { |
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205 | // non encrypted file names |
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206 | char *url = util_path_to_url(sn, path); |
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207 | char *href = dav_session_strdup(sn, util_url_path(url)); |
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208 | free(url); |
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209 | return href; |
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210 | } else { |
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211 | return NULL; |
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212 | } |
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213 | } |
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214 | |
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215 | char* dav_session_get_href(DavSession *sn, char *path) { |
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216 | if(DAV_ENCRYPT_NAME(sn)) { |
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217 | sstr_t p = sstr(path); |
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218 | UcxBuffer *href = ucx_buffer_new(NULL, 256, UCX_BUFFER_AUTOEXTEND); |
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219 | UcxBuffer *pbuf = ucx_buffer_new(NULL, 256, UCX_BUFFER_AUTOEXTEND); |
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220 | int start = 0; |
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221 | int begin = 0; |
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222 | |
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223 | // check path cache |
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224 | char *cp = strdup(path); |
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225 | //printf("cp: %s\n", cp); |
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226 | while(strlen(cp) > 1) { |
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227 | char *cached = ucx_map_cstr_get(sn->pathcache, cp); |
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228 | if(cached) { |
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229 | start = strlen(cp); |
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230 | begin = start; |
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231 | ucx_buffer_puts(href, cached); |
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232 | break; |
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233 | } else { |
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234 | // check, if the parent path is cached |
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235 | char *f = cp; |
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236 | cp = util_parent_path(cp); |
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237 | free(f); |
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238 | } |
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239 | } |
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240 | free(cp); |
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241 | if(href->pos == 0) { |
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242 | // if there are no cached elements we have to add the base url path |
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243 | // to the href buffer |
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244 | ucx_buffer_puts(href, util_url_path(sn->base_url)); |
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245 | } |
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246 | |
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247 | // create resource for name lookup |
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248 | sstr_t rp = sstrdup(sstrn(path, start)); |
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249 | DavResource *root = dav_resource_new(sn, rp.ptr); |
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250 | resource_set_href(root, sstrn(href->space, href->pos)); |
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251 | |
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252 | // create request buffer for propfind requests |
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253 | UcxBuffer *rqbuf = create_basic_propfind_request(); |
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254 | |
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255 | sstr_t remaining = sstrsubs(p, start); |
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256 | size_t nelm = 0; |
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257 | sstr_t *elms = sstrsplit(remaining, S("/"), &nelm); |
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258 | DavResource *res = root; |
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259 | ucx_buffer_puts(pbuf, res->path); |
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260 | // iterate over all remaining path elements |
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261 | for(int i=0;i<nelm;i++) { |
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262 | sstr_t elm = elms[i]; |
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263 | if(elm.length > 0) { |
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264 | //printf("elm: %.*s\n", elm.length, elm.ptr); |
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265 | DavResource *child = dav_find_child(sn, res, rqbuf, elm.ptr); |
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266 | |
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267 | // if necessary add a path separator |
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268 | if(pbuf->space[pbuf->pos-1] != '/') { |
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269 | if(href->space[href->pos-1] != '/') { |
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270 | ucx_buffer_putc(href, '/'); |
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271 | } |
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272 | ucx_buffer_putc(pbuf, '/'); |
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273 | } |
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274 | // add last path/href to the cache |
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275 | sstr_t pp = sstrn(pbuf->space, pbuf->size); |
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276 | sstr_t hh = sstrn(href->space, href->size); |
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277 | dav_session_cache_path(sn, pp, hh); |
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278 | |
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279 | ucx_buffer_write(elm.ptr, 1, elm.length, pbuf); |
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280 | if(child) { |
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281 | ucx_buffer_puts(href, util_resource_name(child->href)); |
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282 | res = child; |
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283 | } else { |
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284 | //printf("random\n"); |
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285 | char *random_name = util_random_str(); |
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286 | ucx_buffer_puts(href, random_name); |
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287 | free(random_name); |
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288 | } |
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289 | |
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290 | } |
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291 | } |
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292 | |
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293 | // if necessary add a path separator |
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294 | if(p.ptr[p.length-1] == '/') { |
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295 | if(href->space[href->pos-1] != '/') { |
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296 | ucx_buffer_putc(href, '/'); |
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297 | } |
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298 | ucx_buffer_putc(pbuf, '/'); |
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299 | } |
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300 | // add the final path to the cache |
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301 | sstr_t pp = sstrn(pbuf->space, pbuf->size); |
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302 | sstr_t hh = sstrn(href->space, href->size); |
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303 | dav_session_cache_path(sn, pp, hh); |
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304 | |
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305 | sstr_t href_str = sstrdup_a( |
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306 | sn->mp->allocator, |
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307 | sstrn(href->space, |
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308 | href->size)); |
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309 | |
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310 | // cleanup |
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311 | dav_resource_free_all(root); |
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312 | ucx_buffer_free(pbuf); |
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313 | ucx_buffer_free(href); |
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314 | |
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315 | return href_str.ptr; |
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316 | } else { |
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317 | return dav_session_create_plain_href(sn, path); |
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318 | } |
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319 | } |
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320 | |
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321 | DavResource* dav_find_child(DavSession *sn, DavResource *res, UcxBuffer *rqbuf, char *name) { |
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322 | if(res && !dav_propfind(sn, res, rqbuf, NULL, 0)) { |
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323 | DavResource *child = res->children; |
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324 | while(child) { |
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325 | if(!strcmp(child->name, name)) { |
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326 | return child; |
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327 | } |
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328 | child = child->next; |
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329 | } |
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330 | } |
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331 | return NULL; |
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332 | } |
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333 | |
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334 | void dav_session_cache_path(DavSession *sn, sstr_t path, sstr_t href) { |
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335 | char *elm = ucx_map_sstr_get(sn->pathcache, path); |
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336 | if(!elm) { |
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337 | href = sstrdup_a(sn->mp->allocator, href); |
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338 | ucx_map_sstr_put(sn->pathcache, path, href.ptr); |
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339 | } |
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340 | } |