libidav/session.c

Sat, 05 Mar 2016 19:28:24 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sat, 05 Mar 2016 19:28:24 +0100
changeset 205
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parent 199
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child 207
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permissions
-rw-r--r--

fixed some warnings and wrong usage of curl_easy_getinfo

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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 2016 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->handle = curl_easy_init();
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67 curl_easy_setopt(sn->handle, CURLOPT_FOLLOWLOCATION, 1L);
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68
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69 // set proxy
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70 DavProxy *proxy = sstrprefix(url, S("https")) ? context->https_proxy
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71 : context->http_proxy;
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72
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73 if (proxy->url) {
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74 curl_easy_setopt(sn->handle, CURLOPT_PROXY, proxy->url);
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75 if (proxy->username) {
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76 curl_easy_setopt(sn->handle, CURLOPT_PROXYUSERNAME,
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77 proxy->username);
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78 if (proxy->password) {
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79 curl_easy_setopt(sn->handle, CURLOPT_PROXYPASSWORD,
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80 proxy->password);
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81 } else {
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82 // TODO: prompt
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83 }
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84 }
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85 if(proxy->no_proxy) {
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86 curl_easy_setopt(sn->handle, CURLOPT_NOPROXY,
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87 proxy->no_proxy);
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88 }
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89 }
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90
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91 // set url
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92 curl_easy_setopt(sn->handle, CURLOPT_URL, base_url);
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93
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94 // add to context
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95 context->sessions = ucx_list_append(context->sessions, sn);
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96 sn->context = context;
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97
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98 return sn;
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99 }
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100
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101 DavSession* dav_session_new_auth(
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102 DavContext *context,
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103 char *base_url,
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104 char *user,
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105 char *password)
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106 {
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107 DavSession *sn = dav_session_new(context, base_url);
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108 if(!sn) {
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109 return NULL;
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110 }
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111 dav_session_set_auth(sn, user, password);
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112 return sn;
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113 }
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114
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115 void dav_session_set_auth(DavSession *sn, char *user, char *password) {
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116 if(user && password) {
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117 size_t ulen = strlen(user);
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118 size_t plen = strlen(password);
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119 size_t upwdlen = ulen + plen + 2;
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120 char *upwdbuf = malloc(upwdlen);
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121 snprintf(upwdbuf, upwdlen, "%s:%s", user, password);
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122 curl_easy_setopt(sn->handle, CURLOPT_USERPWD, upwdbuf);
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123 free(upwdbuf);
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124 }
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125 }
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126
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127 void dav_session_enable_encryption(DavSession *sn, DavKey *key, int flags) {
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128 sn->key = key;
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129 // TODO: review sanity
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130 if(flags != 0) {
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131 sn->flags |= flags;
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132 } else {
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133 sn->flags |= DAV_SESSION_ENCRYPT_CONTENT;
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134 }
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135 }
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136
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137 void dav_session_set_error(DavSession *sn, CURLcode c, int status) {
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138 if(status > 0) {
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139 switch(status) {
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140 default: {
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141 switch(c) {
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142 default: sn->error = DAV_ERROR;
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143 }
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144 break;
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145 }
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146 case 401: sn->error = DAV_UNAUTHORIZED; break;
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147 case 403: sn->error = DAV_FORBIDDEN; break;
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148 case 404: sn->error = DAV_NOT_FOUND; break;
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149 case 405: sn->error = DAV_METHOD_NOT_ALLOWED; break;
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150 case 409: sn->error = DAV_CONFLICT; break;
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151 }
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152 } else {
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153 switch(c) {
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154 case CURLE_UNSUPPORTED_PROTOCOL: sn->error = DAV_UNSUPPORTED_PROTOCOL; break;
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155 case CURLE_COULDNT_RESOLVE_PROXY: sn->error = DAV_COULDNT_RESOLVE_PROXY; break;
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diff changeset
156 case CURLE_COULDNT_RESOLVE_HOST: sn->error = DAV_COULDNT_RESOLVE_HOST; break;
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parents: 75
diff changeset
157 case CURLE_COULDNT_CONNECT: sn->error = DAV_COULDNT_CONNECT; break;
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parents: 75
diff changeset
158 case CURLE_OPERATION_TIMEDOUT: sn->error = DAV_TIMEOUT; break;
f4127c4d1018 improved error messages
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parents: 75
diff changeset
159 case CURLE_SSL_CONNECT_ERROR:
f4127c4d1018 improved error messages
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
160 case CURLE_PEER_FAILED_VERIFICATION:
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
161 case CURLE_SSL_ENGINE_NOTFOUND:
f4127c4d1018 improved error messages
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
162 case CURLE_SSL_ENGINE_SETFAILED:
f4127c4d1018 improved error messages
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
163 case CURLE_SSL_CERTPROBLEM:
f4127c4d1018 improved error messages
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
164 case CURLE_SSL_CIPHER:
f4127c4d1018 improved error messages
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
165 case CURLE_SSL_CACERT:
f4127c4d1018 improved error messages
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
166 case CURLE_SSL_CACERT_BADFILE:
f4127c4d1018 improved error messages
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
167 case CURLE_SSL_SHUTDOWN_FAILED:
f4127c4d1018 improved error messages
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
168 case CURLE_SSL_CRL_BADFILE:
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 75
diff changeset
169 case CURLE_SSL_ISSUER_ERROR: sn->error = DAV_SSL_ERROR; break;
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parents: 75
diff changeset
170 default: sn->error = DAV_ERROR; break;
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parents: 75
diff changeset
171 }
43
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172 }
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diff changeset
173 if(c != CURLE_OK) {
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174 sn->errorstr = curl_easy_strerror(c);
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175 } else {
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176 sn->errorstr = NULL;
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177 }
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178 }
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179
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180 void dav_session_destroy(DavSession *sn) {
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181 // remove session from context
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182 UcxList *sessions = sn->context->sessions;
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183 ssize_t i = ucx_list_find(sessions, sn, ucx_ptrcmp, NULL);
74
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diff changeset
184 if(i >= 0) {
43
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185 UcxList *elm = ucx_list_get(sessions, i);
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186 if(elm) {
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187 sn->context->sessions = ucx_list_remove(sessions, elm);
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188 }
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189 }
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190
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191 ucx_mempool_destroy(sn->mp);
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192 curl_easy_cleanup(sn->handle);
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193 free(sn);
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194 }
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195
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196
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197 void* dav_session_malloc(DavSession *sn, size_t size) {
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198 return ucx_mempool_malloc(sn->mp, size);
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199 }
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200
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201 void* dav_session_calloc(DavSession *sn, size_t nelm, size_t size) {
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parents:
diff changeset
202 return ucx_mempool_calloc(sn->mp, nelm, size);
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203 }
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204
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205 void* dav_session_realloc(DavSession *sn, void *ptr, size_t size) {
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diff changeset
206 return ucx_mempool_realloc(sn->mp, ptr, size);
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207 }
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parents:
diff changeset
208
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diff changeset
209 void dav_session_free(DavSession *sn, void *ptr) {
03076907b58a added file name encryption
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parents:
diff changeset
210 ucx_mempool_free(sn->mp, ptr);
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parents:
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211 }
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parents:
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212
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213 char* dav_session_strdup(DavSession *sn, char *str) {
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parents:
diff changeset
214 return sstrdup_a(sn->mp->allocator, sstr(str)).ptr;
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parents:
diff changeset
215 }
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parents:
diff changeset
216
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parents:
diff changeset
217
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218 char* dav_session_create_plain_href(DavSession *sn, char *path) {
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parents:
diff changeset
219 if(!DAV_ENCRYPT_NAME(sn)) {
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220 // non encrypted file names
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221 char *url = util_path_to_url(sn, path);
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222 char *href = dav_session_strdup(sn, util_url_path(url));
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diff changeset
223 free(url);
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parents:
diff changeset
224 return href;
03076907b58a added file name encryption
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parents:
diff changeset
225 } else {
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parents:
diff changeset
226 return NULL;
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parents:
diff changeset
227 }
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parents:
diff changeset
228 }
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parents:
diff changeset
229
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parents:
diff changeset
230 char* dav_session_get_href(DavSession *sn, char *path) {
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parents:
diff changeset
231 if(DAV_ENCRYPT_NAME(sn)) {
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parents:
diff changeset
232 sstr_t p = sstr(path);
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parents:
diff changeset
233 UcxBuffer *href = ucx_buffer_new(NULL, 256, UCX_BUFFER_AUTOEXTEND);
03076907b58a added file name encryption
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parents:
diff changeset
234 UcxBuffer *pbuf = ucx_buffer_new(NULL, 256, UCX_BUFFER_AUTOEXTEND);
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parents:
diff changeset
235 int start = 0;
03076907b58a added file name encryption
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parents:
diff changeset
236 int begin = 0;
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parents:
diff changeset
237
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parents:
diff changeset
238 // check path cache
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parents:
diff changeset
239 char *cp = strdup(path);
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parents:
diff changeset
240 //printf("cp: %s\n", cp);
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parents:
diff changeset
241 while(strlen(cp) > 1) {
03076907b58a added file name encryption
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
242 char *cached = ucx_map_cstr_get(sn->pathcache, cp);
03076907b58a added file name encryption
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parents:
diff changeset
243 if(cached) {
03076907b58a added file name encryption
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parents:
diff changeset
244 start = strlen(cp);
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parents:
diff changeset
245 begin = start;
03076907b58a added file name encryption
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parents:
diff changeset
246 ucx_buffer_puts(href, cached);
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parents:
diff changeset
247 break;
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parents:
diff changeset
248 } else {
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parents:
diff changeset
249 // check, if the parent path is cached
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parents:
diff changeset
250 char *f = cp;
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parents:
diff changeset
251 cp = util_parent_path(cp);
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parents:
diff changeset
252 free(f);
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parents:
diff changeset
253 }
03076907b58a added file name encryption
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parents:
diff changeset
254 }
03076907b58a added file name encryption
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parents:
diff changeset
255 free(cp);
03076907b58a added file name encryption
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parents:
diff changeset
256 if(href->pos == 0) {
03076907b58a added file name encryption
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parents:
diff changeset
257 // if there are no cached elements we have to add the base url path
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parents:
diff changeset
258 // to the href buffer
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parents:
diff changeset
259 ucx_buffer_puts(href, util_url_path(sn->base_url));
03076907b58a added file name encryption
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parents:
diff changeset
260 }
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parents:
diff changeset
261
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parents:
diff changeset
262 // create resource for name lookup
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parents:
diff changeset
263 sstr_t rp = sstrdup(sstrn(path, start));
03076907b58a added file name encryption
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parents:
diff changeset
264 DavResource *root = dav_resource_new(sn, rp.ptr);
150
37fb12574acd added checksums for encrypted resources
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parents: 135
diff changeset
265 free(rp.ptr);
43
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parents:
diff changeset
266 resource_set_href(root, sstrn(href->space, href->pos));
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parents:
diff changeset
267
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parents:
diff changeset
268 // create request buffer for propfind requests
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parents:
diff changeset
269 UcxBuffer *rqbuf = create_basic_propfind_request();
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parents:
diff changeset
270
03076907b58a added file name encryption
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parents:
diff changeset
271 sstr_t remaining = sstrsubs(p, start);
74
da079dc0724c fixed many memory leaks
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 68
diff changeset
272 ssize_t nelm = 0;
43
03076907b58a added file name encryption
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parents:
diff changeset
273 sstr_t *elms = sstrsplit(remaining, S("/"), &nelm);
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parents:
diff changeset
274 DavResource *res = root;
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parents:
diff changeset
275 ucx_buffer_puts(pbuf, res->path);
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parents:
diff changeset
276 // iterate over all remaining path elements
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parents:
diff changeset
277 for(int i=0;i<nelm;i++) {
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parents:
diff changeset
278 sstr_t elm = elms[i];
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parents:
diff changeset
279 if(elm.length > 0) {
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parents:
diff changeset
280 //printf("elm: %.*s\n", elm.length, elm.ptr);
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parents:
diff changeset
281 DavResource *child = dav_find_child(sn, res, rqbuf, elm.ptr);
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parents:
diff changeset
282
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parents:
diff changeset
283 // if necessary add a path separator
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parents:
diff changeset
284 if(pbuf->space[pbuf->pos-1] != '/') {
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parents:
diff changeset
285 if(href->space[href->pos-1] != '/') {
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parents:
diff changeset
286 ucx_buffer_putc(href, '/');
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parents:
diff changeset
287 }
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parents:
diff changeset
288 ucx_buffer_putc(pbuf, '/');
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parents:
diff changeset
289 }
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parents:
diff changeset
290 // add last path/href to the cache
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parents:
diff changeset
291 sstr_t pp = sstrn(pbuf->space, pbuf->size);
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parents:
diff changeset
292 sstr_t hh = sstrn(href->space, href->size);
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parents:
diff changeset
293 dav_session_cache_path(sn, pp, hh);
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parents:
diff changeset
294
03076907b58a added file name encryption
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parents:
diff changeset
295 ucx_buffer_write(elm.ptr, 1, elm.length, pbuf);
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parents:
diff changeset
296 if(child) {
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parents:
diff changeset
297 ucx_buffer_puts(href, util_resource_name(child->href));
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parents:
diff changeset
298 res = child;
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parents:
diff changeset
299 } else {
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parents:
diff changeset
300 //printf("random\n");
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parents:
diff changeset
301 char *random_name = util_random_str();
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parents:
diff changeset
302 ucx_buffer_puts(href, random_name);
03076907b58a added file name encryption
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parents:
diff changeset
303 free(random_name);
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parents:
diff changeset
304 }
03076907b58a added file name encryption
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parents:
diff changeset
305 }
151
a316613205dc fixed some memory leaks, content verification and dav info
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 150
diff changeset
306
a316613205dc fixed some memory leaks, content verification and dav info
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parents: 150
diff changeset
307 // cleanup
a316613205dc fixed some memory leaks, content verification and dav info
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parents: 150
diff changeset
308 free(elm.ptr);
43
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309 }
151
a316613205dc fixed some memory leaks, content verification and dav info
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310 free(elms);
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311
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312 // if necessary add a path separator
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313 if(p.ptr[p.length-1] == '/') {
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314 if(href->space[href->pos-1] != '/') {
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315 ucx_buffer_putc(href, '/');
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316 }
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317 ucx_buffer_putc(pbuf, '/');
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318 }
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319 // add the final path to the cache
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320 sstr_t pp = sstrn(pbuf->space, pbuf->size);
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321 sstr_t hh = sstrn(href->space, href->size);
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322 dav_session_cache_path(sn, pp, hh);
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323
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324 sstr_t href_str = sstrdup_a(
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325 sn->mp->allocator,
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326 sstrn(href->space,
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327 href->size));
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328
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329 // cleanup
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330 dav_resource_free_all(root);
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37fb12574acd added checksums for encrypted resources
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331 ucx_buffer_free(rqbuf);
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332 ucx_buffer_free(pbuf);
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333 ucx_buffer_free(href);
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334
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335 return href_str.ptr;
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336 } else {
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337 return dav_session_create_plain_href(sn, path);
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338 }
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339 }
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340
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341 DavResource* dav_find_child(DavSession *sn, DavResource *res, UcxBuffer *rqbuf, char *name) {
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342 if(res && !dav_propfind(sn, res, rqbuf)) {
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343 DavResource *child = res->children;
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344 while(child) {
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345 if(!strcmp(child->name, name)) {
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346 return child;
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347 }
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348 child = child->next;
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349 }
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350 }
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351 return NULL;
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352 }
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353
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354 void dav_session_cache_path(DavSession *sn, sstr_t path, sstr_t href) {
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355 char *elm = ucx_map_sstr_get(sn->pathcache, path);
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356 if(!elm) {
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357 href = sstrdup_a(sn->mp->allocator, href);
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358 ucx_map_sstr_put(sn->pathcache, path, href.ptr);
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359 }
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360 }

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