libidav/webdav.c

Thu, 21 Mar 2019 10:51:14 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Thu, 21 Mar 2019 10:51:14 +0100
changeset 533
5b9f20aa88c2
parent 525
26a1d5b9d9d2
child 587
3c917df041b8
permissions
-rw-r--r--

adds option to restore previous file versions

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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 *
404
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4 * Copyright 2018 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 <libxml/tree.h>
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33
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34 #include "utils.h"
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35 #include "webdav.h"
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36 #include "session.h"
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37 #include "methods.h"
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38 #include "ucx/buffer.h"
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39 #include "ucx/utils.h"
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40 #include "davqlparser.h"
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41 #include "davqlexec.h"
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42
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43
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44 DavContext* dav_context_new() {
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45 // initialize
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46 DavContext *context = calloc(1, sizeof(DavContext));
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47 if(!context) {
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48 return NULL;
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49 }
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50 context->sessions = NULL;
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51 context->http_proxy = calloc(1, sizeof(DavProxy));
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52 if(!context->http_proxy) {
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53 dav_context_destroy(context);
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54 return NULL;
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55 }
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56 context->https_proxy = calloc(1, sizeof(DavProxy));
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57 if(!context->https_proxy) {
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58 dav_context_destroy(context);
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59 return NULL;
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60 }
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61 context->namespaces = ucx_map_new(16);
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62 if(!context->namespaces) {
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63 dav_context_destroy(context);
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64 return NULL;
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65 }
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66 context->keys = ucx_map_new(16);
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67 if(!context->keys) {
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68 dav_context_destroy(context);
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69 return NULL;
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70 }
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71
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72 // add DAV: namespace
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73 DavNamespace *davns = malloc(sizeof(DavNamespace));
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74 if(!davns) {
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75 free(davns);
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76 dav_context_destroy(context);
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77 return NULL;
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78 }
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79 davns->prefix = strdup("D");
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80 if(!davns->prefix) {
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81 free(davns);
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82 dav_context_destroy(context);
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83 return NULL;
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84 }
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85 davns->name = strdup("DAV:");
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86 if(!davns->name) {
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87 free(davns->prefix);
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88 free(davns);
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89 dav_context_destroy(context);
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90 return NULL;
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91 }
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92 if(ucx_map_cstr_put(context->namespaces, "D", davns)) {
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93 free(davns->prefix);
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94 free(davns->name);
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95 free(davns);
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96 dav_context_destroy(context);
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97 return NULL;
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98 }
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99
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100 // add idav namespace
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101 DavNamespace *idavns = malloc(sizeof(DavNamespace));
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102 if(!idavns) {
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103 free(idavns);
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104 dav_context_destroy(context);
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105 return NULL;
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106 }
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107 idavns->prefix = strdup("idav");
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108 if(!idavns->prefix) {
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109 free(idavns);
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110 dav_context_destroy(context);
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111 return NULL;
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112 }
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113 idavns->name = strdup(DAV_NS);
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114 if(!idavns->name) {
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115 free(idavns->prefix);
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116 free(idavns);
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117 dav_context_destroy(context);
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118 return NULL;
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119 }
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120 if(ucx_map_cstr_put(context->namespaces, "idav", idavns)) {
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121 free(idavns->prefix);
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122 free(idavns->name);
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123 free(idavns);
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124 dav_context_destroy(context);
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125 return NULL;
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126 }
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127
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128 return context;
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129 }
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130
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131 void dav_context_destroy(DavContext *ctx) {
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132 // destroy all sessions assoziated with this context
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133 UcxList *elm = ctx->sessions;
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134 while(elm) {
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135 DavSession *sn = elm->data;
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136 elm = elm->next;
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137 dav_session_destroy(sn);
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138 }
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139 if(ctx->http_proxy) {
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140 free(ctx->http_proxy);
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141 }
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142 if(ctx->https_proxy) {
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143 free(ctx->https_proxy);
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144 }
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145
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146 if(ctx->namespaces) {
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147 UcxMapIterator i = ucx_map_iterator(ctx->namespaces);
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148 UcxKey k;
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149 DavNamespace *ns;
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150 UCX_MAP_FOREACH(k, ns, i) {
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151 if(!ns) continue;
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152 if(ns->prefix) {
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153 free(ns->prefix);
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154 }
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155 if(ns->name) {
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156 free(ns->name);
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157 }
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158 free(ns);
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159 }
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160 ucx_map_free(ctx->namespaces);
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161 }
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diff changeset
162 if(ctx->keys) {
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163 UcxMapIterator i = ucx_map_iterator(ctx->keys);
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164 UcxKey k;
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165 DavKey *key;
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parents: 66
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166 UCX_MAP_FOREACH(k, key, i) {
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167 if(!key) continue;
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168 if(key->name) {
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diff changeset
169 free(key->name);
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170 }
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parents: 66
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171 if(key->data) {
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172 free(key->data);
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173 }
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174 free(key);
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175 }
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176 ucx_map_free(ctx->keys);
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177 }
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178
33
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179 free(ctx);
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180 }
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181
40
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182 void dav_context_add_key(DavContext *context, DavKey *key) {
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183 ucx_map_cstr_put(context->keys, key->name, key);
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184 }
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185
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186 DavKey* dav_context_get_key(DavContext *context, char *name) {
229
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187 if(name) {
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188 return ucx_map_cstr_get(context->keys, name);
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189 }
242
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190 return NULL;
40
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191 }
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192
317
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193 int dav_add_namespace(DavContext *context, const char *prefix, const char *name) {
33
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194 DavNamespace *namespace = malloc(sizeof(DavNamespace));
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195 if(!namespace) {
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196 return 1;
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197 }
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198 namespace->prefix = strdup(prefix);
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199 namespace->name = strdup(name);
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200 return ucx_map_cstr_put(context->namespaces, prefix, namespace);
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201 }
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202
317
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203 DavNamespace* dav_get_namespace(DavContext *context, const char *prefix) {
33
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204 return ucx_map_cstr_get(context->namespaces, prefix);
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205 }
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206
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207 DavNamespace* dav_get_namespace_s(DavContext *context, sstr_t prefix) {
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208 return ucx_map_sstr_get(context->namespaces, prefix);
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209 }
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210
134
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211 void dav_get_property_namespace_str(
33
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212 DavContext *ctx,
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213 char *prefixed_name,
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214 char **ns,
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215 char **name)
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216 {
134
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217 // TODO: rewrite using dav_get_property_ns
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218
33
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219 char *pname = strchr(prefixed_name, ':');
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220 char *pns = "DAV:";
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221 if(pname) {
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222 DavNamespace *ns = dav_get_namespace_s(
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223 ctx,
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224 sstrn(prefixed_name, pname-prefixed_name));
128
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225 if(ns) {
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226 pns = ns->name;
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227 pname++;
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228 } else {
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229 pns = NULL;
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230 pname = NULL;
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231 }
33
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232 } else {
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233 pname = prefixed_name;
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234 }
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235 *ns = pns;
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236 *name = pname;
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237 }
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238
134
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diff changeset
239 DavNamespace* dav_get_property_namespace(
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diff changeset
240 DavContext *ctx,
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parents: 128
diff changeset
241 char *prefixed_name,
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parents: 128
diff changeset
242 char **name)
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parents: 128
diff changeset
243 {
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diff changeset
244 char *pname = strchr(prefixed_name, ':');
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diff changeset
245 if(pname) {
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diff changeset
246 DavNamespace *ns = dav_get_namespace_s(
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parents: 128
diff changeset
247 ctx,
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parents: 128
diff changeset
248 sstrn(prefixed_name, pname-prefixed_name));
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parents: 128
diff changeset
249 if(ns) {
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diff changeset
250 *name = pname +1;
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parents: 128
diff changeset
251 return ns;
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parents: 128
diff changeset
252 } else {
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diff changeset
253 *name = NULL;
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diff changeset
254 return NULL;
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parents: 128
diff changeset
255 }
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parents: 128
diff changeset
256 } else {
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parents: 128
diff changeset
257 *name = prefixed_name;
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parents: 128
diff changeset
258 return dav_get_namespace_s(ctx, S("D"));
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parents: 128
diff changeset
259 }
4bccc18820e8 implemented execution of field list expressions
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parents: 128
diff changeset
260 }
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parents: 128
diff changeset
261
4bccc18820e8 implemented execution of field list expressions
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parents: 128
diff changeset
262 // TODO: add sstr_t version of dav_get_property_ns
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parents: 128
diff changeset
263
478
baa63fef5c5c fixes redirects
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parents: 475
diff changeset
264 void dav_set_effective_href(DavSession *sn, DavResource *resource) {
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parents: 475
diff changeset
265 char *eff_url;
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parents: 475
diff changeset
266 curl_easy_getinfo(sn->handle, CURLINFO_EFFECTIVE_URL, &eff_url);
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parents: 475
diff changeset
267 if(eff_url) {
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parents: 475
diff changeset
268 char *href = util_url_path(eff_url);
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parents: 475
diff changeset
269 if(strcmp(href, resource->href)) {
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parents: 475
diff changeset
270 dav_session_free(sn, resource->href);
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parents: 475
diff changeset
271 resource->href = dav_session_strdup(sn, href);
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diff changeset
272 }
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diff changeset
273 }
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parents: 475
diff changeset
274 }
39
3e55bed345f9 added some aes functions + ucx update
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parents: 38
diff changeset
275
40
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diff changeset
276 DavResource* dav_get(DavSession *sn, char *path, char *properties) {
33
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277 CURL *handle = sn->handle;
48
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diff changeset
278 DavResource *resource = dav_resource_new(sn, path);
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diff changeset
279 util_set_url(sn, dav_resource_get_href(resource));
33
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280
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281 UcxList *proplist = NULL;
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282 if(properties) {
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283 proplist = parse_properties_string(sn->context, sstr(properties));
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284 }
475
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parents: 404
diff changeset
285 UcxBuffer *rqbuf = create_propfind_request(sn, proplist, "propfind", 0);
33
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286 UcxBuffer *rpbuf = ucx_buffer_new(NULL, 4096, UCX_BUFFER_AUTOEXTEND);
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287
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288 //fwrite(rqbuf->space, 1, rqbuf->size, stdout);
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289 //printf("\n");
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290
354
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parents: 317
diff changeset
291 CURLcode ret = do_propfind_request(sn, rqbuf, rpbuf);
205
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parents: 185
diff changeset
292 long status = 0;
33
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293 curl_easy_getinfo (handle, CURLINFO_RESPONSE_CODE, &status);
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294 if(ret == CURLE_OK && status == 207) {
478
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diff changeset
295 dav_set_effective_href(sn, resource);
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diff changeset
296
48
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diff changeset
297 //printf("response\n%s\n", rpbuf->space);
135
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parents: 134
diff changeset
298 // TODO: use PropfindParser
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diff changeset
299 resource = parse_propfind_response(sn, resource, rpbuf);
525
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parents: 478
diff changeset
300 resource->exists = 1;
33
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301 sn->error = DAV_OK;
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302 } else {
43
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parents: 41
diff changeset
303 dav_session_set_error(sn, ret, status);
48
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diff changeset
304 dav_resource_free(resource);
66
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parents: 48
diff changeset
305 resource = NULL;
33
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306 }
43
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parents: 41
diff changeset
307
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parents: 41
diff changeset
308 ucx_buffer_free(rqbuf);
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parents: 41
diff changeset
309 ucx_buffer_free(rpbuf);
223
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parents: 205
diff changeset
310 while(proplist) {
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311 DavProperty *p = proplist->data;
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312 free(p->name);
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313 free(p);
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314 UcxList *next = proplist->next;
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315 free(proplist);
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316 proplist = next;
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317 }
43
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318
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319 return resource;
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320 }
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321
135
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322
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323 int dav_propfind(DavSession *sn, DavResource *root, UcxBuffer *rqbuf) {
43
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324 // clean resource properties
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325 DavResourceData *data = root->data;
168
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326 ucx_map_clear(data->properties);
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327
33
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328 CURL *handle = sn->handle;
43
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329 util_set_url(sn, dav_resource_get_href(root));
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330
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331 UcxBuffer *rpbuf = ucx_buffer_new(NULL, 4096, UCX_BUFFER_AUTOEXTEND);
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332 DavResource *resource = root;
354
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333 CURLcode ret = do_propfind_request(sn, rqbuf, rpbuf);
292
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334 long status = 0;
205
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335 long error = 0;
33
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336 curl_easy_getinfo (handle, CURLINFO_RESPONSE_CODE, &status);
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337 if(ret == CURLE_OK && status == 207) {
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338 //printf("response\n%s\n", rpbuf->space);
478
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parents: 475
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339 dav_set_effective_href(sn, resource);
135
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340 resource = parse_propfind_response(sn, resource, rpbuf);
33
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341 sn->error = DAV_OK;
525
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diff changeset
342 root->exists = 1;
33
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343 } else {
43
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diff changeset
344 dav_session_set_error(sn, ret, status);
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345 error = 1;
33
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346 }
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347 ucx_buffer_free(rpbuf);
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348 return error;
33
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349 }
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350
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351 UcxList* parse_properties_string(DavContext *context, sstr_t str) {
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352 UcxList *proplist = NULL;
74
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diff changeset
353 ssize_t nprops = 0;
33
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354 sstr_t *props = sstrsplit(str, S(","), &nprops);
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355 for(int i=0;i<nprops;i++) {
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356 sstr_t s = props[i];
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357 sstr_t nsname = sstrchr(s, ':');
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diff changeset
358 if(nsname.length > 0) {
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359 sstr_t nspre = sstrsubsl(s, 0, nsname.ptr - s.ptr);
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360 nsname.ptr++;
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diff changeset
361 nsname.length--;
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362
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diff changeset
363 DavProperty *dp = malloc(sizeof(DavProperty));
45
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diff changeset
364 sstr_t pre = sstrtrim(nspre);
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diff changeset
365 dp->ns = dav_get_namespace_s(context, pre);
33
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366 dp->name = sstrdup(nsname).ptr;
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diff changeset
367 if(dp->ns && dp->name) {
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368 proplist = ucx_list_append(proplist, dp);
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369 } else {
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diff changeset
370 free(dp->name);
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diff changeset
371 free(dp);
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parents:
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372 }
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parents:
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373 }
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374 free(s.ptr);
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375 }
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376 free(props);
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377 return proplist;
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parents:
diff changeset
378 }
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parents:
diff changeset
379
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parents:
diff changeset
380 DavResource* dav_query(DavSession *sn, char *query, ...) {
135
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parents: 134
diff changeset
381 DavQLStatement *stmt = dav_parse_statement(sstr(query));
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parents: 134
diff changeset
382 if(!stmt) {
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parents: 134
diff changeset
383 sn->error = DAV_ERROR;
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parents: 134
diff changeset
384 return NULL;
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parents: 134
diff changeset
385 }
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parents: 134
diff changeset
386 if(stmt->errorcode != 0) {
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 134
diff changeset
387 sn->error = DAV_QL_ERROR;
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parents: 134
diff changeset
388 dav_free_statement(stmt);
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parents: 134
diff changeset
389 return NULL;
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parents: 134
diff changeset
390 }
664aeaec8d25 replaced old davql (still buggy)
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parents: 134
diff changeset
391
33
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parents:
diff changeset
392 va_list ap;
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parents:
diff changeset
393 va_start(ap, query);
135
664aeaec8d25 replaced old davql (still buggy)
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parents: 134
diff changeset
394 DavResult result = dav_statement_execv(sn, stmt, ap);
33
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parents:
diff changeset
395 va_end(ap);
135
664aeaec8d25 replaced old davql (still buggy)
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parents: 134
diff changeset
396
664aeaec8d25 replaced old davql (still buggy)
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parents: 134
diff changeset
397 dav_free_statement(stmt);
664aeaec8d25 replaced old davql (still buggy)
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parents: 134
diff changeset
398 return result.result;
33
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parents:
diff changeset
399 }
0bbbb0341606 some code cleanup and bug fixes
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parents:
diff changeset
400
0bbbb0341606 some code cleanup and bug fixes
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
401
0bbbb0341606 some code cleanup and bug fixes
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
402
0bbbb0341606 some code cleanup and bug fixes
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
403

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