src/server/plugins/postgresql/webdav.c

Sun, 14 Aug 2022 16:46:52 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 14 Aug 2022 16:46:52 +0200
branch
webdav
changeset 376
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parent 375
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child 377
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permissions
-rw-r--r--

Add support for extended properties in pg propfind

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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 2022 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 "webdav.h"
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30 #include "vfs.h"
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31 #include "config.h"
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32
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33 #include "../../util/util.h"
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34 #include "../../util/pblock.h"
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35
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36 #include "../../daemon/http.h" // etag
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37
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38 #include <ucx/buffer.h>
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39 #include <ucx/utils.h>
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40 #include <libxml/tree.h>
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41
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42
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43 static WebdavBackend pg_webdav_backend = {
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44 pg_dav_propfind_init,
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45 pg_dav_propfind_do,
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46 pg_dav_propfind_finish,
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47 pg_dav_proppatch_do,
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48 pg_dav_proppatch_finish,
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49 NULL, // opt_mkcol
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50 NULL, // opt_mkcol_finish
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51 NULL, // opt_delete
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52 NULL, // opt_delete_finish
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53 0,
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54 NULL,
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55 NULL
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56 };
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57
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58
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59
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60 /*
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61 * SQL query components
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62 */
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63
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64 /*
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65 * PROPFIND queries are build from components:
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66 *
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67 * cte cte_recursive or empty
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68 * select
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69 * ppath ppath column
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70 * cols list of columns
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71 * ext_cols* list of extension columns
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72 * from from [table] / from cte
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73 * prop_join join with property table, allprop or plist
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74 * ext_join* extension table join
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75 * where different where clauses for depth0 and depth1
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76 * order depth0 doesn't need order
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77 */
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78
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79 static const char *sql_propfind_cte_recursive = "\
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80 with recursive resolvepath as (\n\
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81 select\n\
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82 '' as ppath,\n\
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83 *\n\
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84 from Resource\n\
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85 where resource_id = $1 \n\
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86 union\n\
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87 select\n\
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88 p.ppath || '/' || r.nodename,\n\
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89 r.*\n\
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90 from Resource r\n\
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91 inner join resolvepath p on r.parent_id = p.resource_id\n\
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92 )\n";
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93
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94 static const char *sql_propfind_select = "\
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95 select\n";
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96
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97 static const char *sql_propfind_ppath_depth0 = "\
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98 $2::text as ppath,\n";
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99
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100 static const char *sql_propfind_ppath_depth1 = "\
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101 case when r.resource_id = $1 then $2\n\
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102 else $2 || '/' || r.nodename\n\
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103 end as ppath,\n";
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104
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105 static const char *sql_propfind_ppath_depth_infinity = "\
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106 case when r.resource_id = $1 then $2\n\
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107 else $2 || r.ppath\n\
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108 end as ppath,\n";
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109
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110 static const char *sql_propfind_cols = "\
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111 r.resource_id,\n\
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112 r.parent_id,\n\
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113 r.nodename,\n\
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114 r.iscollection,\n\
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115 r.lastmodified,\n\
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116 r.creationdate,\n\
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117 r.contentlength,\n\
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118 r.etag,\n\
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119 p.prefix,\n\
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120 p.xmlns,\n\
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121 p.pname,\n\
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122 p.lang,\n\
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123 p.nsdeflist,\n\
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124 p.pvalue\n";
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125
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126 static const char *sql_propfind_from_table = "\
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127 from Resource r\n";
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128
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129 static const char *sql_propfind_from_cte = "\
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130 from resolvepath r\n";
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131
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132 static const char *sql_propfind_propjoin_allprop = "\
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133 left join Property p on r.resource_id = p.resource_id\n";
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134
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135 static const char *sql_propfind_propjoin_plist = "\
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136 left join (\n\
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137 select p.* from Property p\
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138 inner join (select unnest($3::text[]) as xmlns, unnest($4::text[]) as pname) n\n\
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139 on p.xmlns = n.xmlns and p.pname = n.pname\n\
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140 ) p on r.resource_id = p.resource_id\n";
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141
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142 static const char *sql_propfind_where_depth0 = "\
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143 where r.resource_id = $1\n";
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144
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145 static const char *sql_propfind_where_depth1 = "\
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146 where r.resource_id = $1 or r.parent_id = $1\n";
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147
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148 static const char *sql_propfind_order_depth1 = "\
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149 order by case when r.resource_id = $1 then 0 else 1 end, nodename, resource_id";
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150
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151 static const char *sql_propfind_order_depth_infinity = "\
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152 order by replace(ppath, '/', chr(1)), resource_id";
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153
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154 /*
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155 * SQL Queries
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156 */
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157
306
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158
318
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159 // proppatch: set property
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160 // params: $1: resource_id
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161 // $2: xmlns prefix
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162 // $3: xmlns href
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163 // $4: property name
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164 // $5: lang attribute value
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165 // $6: namespace list string
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166 // $7: property value
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167 static const char *sql_proppatch_set = "\
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168 insert into Property(resource_id, prefix, xmlns, pname, lang, nsdeflist, pvalue)\n\
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169 values($1, $2, $3, $4, $5, $6, $7)\n\
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170 on conflict (resource_id, xmlns, pname) do\n\
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171 update set prefix=$2, lang=$5, nsdeflist=$6, pvalue=$7;";
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172
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173 // proppatch: remove property
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174 // params: $1: resource_id
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175 // $2: xmlns href
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176 // $3: property name
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177 static const char *sql_proppatch_remove = "\
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178 delete from Property where resource_id = $1 and xmlns = $2 and pname = $3";
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179
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180
366
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181 void* pg_webdav_init(ServerConfiguration *cfg, pool_handle_t *pool, WSConfigNode *config) {
372
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182 return pg_init_repo(cfg, pool, config);
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183 }
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184
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185 WebdavBackend* pg_webdav_create(Session *sn, Request *rq, pblock *pb, void *initData) {
370
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186 PgRepository *repo = initData;
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187
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188 char *resource_pool;
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189 if(repo) {
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190 resource_pool = repo->resourcepool.ptr;
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191 } else {
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192 // resourcepool is required
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193 resource_pool = pblock_findval("resourcepool", pb);
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194 if(!resource_pool) {
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195 log_ereport(LOG_MISCONFIG, "pg_webdav_create: missing resourcepool parameter");
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196 return NULL;
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197 }
303
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198 }
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199
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200 // get the resource first (should only fail in case of misconfig)
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201 ResourceData *resdata = resourcepool_lookup(sn, rq, resource_pool, 0);
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202 if(!resdata) {
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203 log_ereport(LOG_MISCONFIG, "postgresql webdav: resource pool %s not found", resource_pool);
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204 return NULL;
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205 }
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206
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207 return pg_webdav_create_from_resdata(sn, rq, repo, resdata);
303
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208 }
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209
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210 WebdavBackend* pg_webdav_create_from_resdata(Session *sn, Request *rq, PgRepository *repo, ResourceData *resdata) {
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211 WebdavBackend *webdav = pool_malloc(sn->pool, sizeof(WebdavBackend));
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212 if(!webdav) {
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213 return NULL;
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214 }
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215 *webdav = pg_webdav_backend;
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216
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217 PgWebdavBackend *instance = pool_malloc(sn->pool, sizeof(PgWebdavBackend));
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218 if(!instance) {
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219 pool_free(sn->pool, webdav);
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220 return NULL;
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221 }
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222 webdav->instance = instance;
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223
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224 instance->pg_resource = resdata;
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225 instance->connection = resdata->data;
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226
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227 instance->repository = repo;
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228 snprintf(instance->root_resource_id_str, 32, "%" PRId64, repo->root_resource_id);
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229
303
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230 return webdav;
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231 }
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232
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233 WebdavBackend* pg_webdav_prop_create(Session *sn, Request *rq, pblock *pb) {
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234 return NULL;
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235 }
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236
315
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237 /*
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238 * adds str to the buffer
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239 * some characters will be escaped: \,{}
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240 */
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241 static void buf_addstr_escaped(UcxBuffer *buf, const char *str) {
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242 size_t len = strlen(str);
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243 for(size_t i=0;i<len;i++) {
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244 char c = str[i];
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245 if(c == '{' || c == '}' || c == ',' || c == '\\') {
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246 ucx_buffer_putc(buf, '\\');
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247 }
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248 ucx_buffer_putc(buf, c);
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249 }
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250 }
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251
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252 /*
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253 * convert a property list to two pg array parameter strings
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254 * array format: {elm1,elm2,elm3}
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255 * xmlns: buffer for the xmlns array
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256 * pname: buffer for the property name array
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257 *
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258 * returns 0 on success, 1 otherwise
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259 */
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260 int pg_create_property_param_arrays(WebdavPList *plist, UcxBuffer *xmlns, UcxBuffer *pname) {
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261 ucx_buffer_putc(xmlns, '{');
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262 ucx_buffer_putc(pname, '{');
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263 while(plist) {
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264 WebdavProperty *property = plist->property;
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265 if(property && property->namespace && property->namespace->href && property->name) {
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266 buf_addstr_escaped(xmlns, (const char*)property->namespace->href);
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267 buf_addstr_escaped(pname, (const char*)property->name);
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268 if(plist->next) {
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269 ucx_buffer_putc(xmlns, ',');
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270 ucx_buffer_putc(pname, ',');
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271 }
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272 }
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273 plist = plist->next;
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274 }
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275 int r1 = ucx_buffer_write("}\0", 2, 1, xmlns) == 0;
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276 int r2 = ucx_buffer_write("}\0", 2, 1, pname) == 0;
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277 return r1+r2 != 0;
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278 }
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279
303
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280
376
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281 static int propfind_ext_cmp(const void *f1, const void *f2) {
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282 const PgPropfindExtCol *e1 = f1;
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283 const PgPropfindExtCol *e2 = f2;
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284
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285 if(e1->ext->tableindex != e2->ext->tableindex) {
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286 return e1->ext->tableindex < e2->ext->tableindex ? -1 : 1;
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287 }
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288
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289 return 0;
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290 }
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291
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292
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293 static int pg_create_propfind_query(
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294 WebdavPropfindRequest *rq,
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295 WSBool iscollection,
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296 PgPropfindExtCol *ext,
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297 size_t numext,
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298 UcxBuffer *sql)
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299 {
375
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300 PgWebdavBackend *pgdav = rq->dav->instance;
376
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301 PgRepository *repo = pgdav->repository;
375
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302 int depth = !iscollection ? 0 : rq->depth;
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303
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304 /*
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305 * PROPFIND queries are build from components:
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306 *
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307 * cte cte_recursive or empty
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308 * select
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309 * ppath ppath column
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310 * cols list of columns
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311 * ext_cols* list of extension columns
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312 * from from [table] / from cte
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313 * prop_join join with property table, allprop or plist
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314 * ext_join* extension table join
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315 * where different where clauses for depth0 and depth1
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316 * order depth0 doesn't need order
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317 */
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318
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319 // CTE
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320 if(depth == -1) {
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321 ucx_buffer_puts(sql, sql_propfind_cte_recursive);
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322 }
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323
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324 // select
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325 ucx_buffer_puts(sql, sql_propfind_select);
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326
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327 // ppath
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328 switch(depth) {
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329 case 0: ucx_buffer_puts(sql, sql_propfind_ppath_depth0); break;
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330 case 1: ucx_buffer_puts(sql, sql_propfind_ppath_depth1); break;
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331 case -1: ucx_buffer_puts(sql, sql_propfind_ppath_depth_infinity); break;
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332 }
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333
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334 // cols
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335 ucx_buffer_puts(sql, sql_propfind_cols);
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336
376
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337 // ext_cols
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338 if(ext) {
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339 if(rq->allprop) {
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340 for(int i=0;i<repo->ntables;i++) {
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341 ucx_bprintf(sql, ",x%d.*\n", i);
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342 }
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343 } else {
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344 for(int i=0;i<numext;i++) {
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345 PgPropfindExtCol e = ext[i];
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346 ucx_bprintf(sql, ",x%d.%s\n", e.ext->tableindex, e.ext->column);
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347 }
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348 }
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349 }
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350
375
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351 // from
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352 ucx_buffer_puts(sql, depth == -1 ? sql_propfind_from_cte : sql_propfind_from_table);
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353
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354 // prop join
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355 ucx_buffer_puts(sql, rq->allprop ? sql_propfind_propjoin_allprop : sql_propfind_propjoin_plist);
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356
376
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357 // ext_join
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358 if(ext) {
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359 if(rq->allprop) {
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360 for(int i=0;i<repo->ntables;i++) {
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361 ucx_bprintf(sql, "left join %s x%d on r.resource_id = x%d.resource_id\n", repo->tables[i].table, i, i);
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362 }
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363 } else {
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364 int tab = -1;
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365 for(int i=0;i<numext;i++) {
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366 PgPropfindExtCol e = ext[i];
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367 if(e.ext->tableindex != tab) {
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368 tab = e.ext->tableindex;
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369 ucx_bprintf(sql, "left join %s x%d on r.resource_id = x%d.resource_id\n", repo->tables[tab].table, tab, tab);
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370 }
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371 }
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372 }
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373
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374 }
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375
375
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376 // where
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377 if(depth == 0) {
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378 ucx_buffer_puts(sql, sql_propfind_where_depth0);
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379 } else if(depth == 1) {
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380 ucx_buffer_puts(sql, sql_propfind_where_depth1);
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381 }
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382
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383 // order
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384 if(depth == 1) {
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385 ucx_buffer_puts(sql, sql_propfind_order_depth1);
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386 } else if(depth == -1) {
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387 ucx_buffer_puts(sql, sql_propfind_order_depth_infinity);
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388 }
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389
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390 // end
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391 ucx_buffer_puts(sql, ";\0");
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392
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393 return 0;
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394 }
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395
299
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396 int pg_dav_propfind_init(
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397 WebdavPropfindRequest *rq,
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398 const char *path,
307
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399 const char *href,
299
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400 WebdavPList **outplist)
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401 {
306
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402 PgWebdavBackend *pgdav = rq->dav->instance;
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403
376
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404 // first, check if the resource exists
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405 // if it doesn't exist, we can return immediately
306
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406 int64_t parent_id;
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407 int64_t resource_id;
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408 const char *resourcename;
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409 WSBool iscollection;
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410 int res_errno = 0;
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411 int err = pg_resolve_path(
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412 pgdav->connection,
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413 path,
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414 pgdav->root_resource_id_str,
306
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415 &parent_id,
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416 &resource_id,
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417 NULL, // OID
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418 &resourcename,
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419 &iscollection,
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420 NULL, // stat
346
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421 NULL, // etag
306
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422 &res_errno);
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423
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424 if(err) {
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425 if(res_errno == ENOENT) {
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426 protocol_status(rq->sn, rq->rq, PROTOCOL_NOT_FOUND, NULL);
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427 }
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428 return 1;
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429 }
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430
376
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431 // create a list of requsted extended properties
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diff changeset
432 PgPropfindExtCol *ext;
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diff changeset
433 size_t numext;
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diff changeset
434 if(pgdav->repository->ntables == 0) {
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diff changeset
435 // no property extensions configured
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diff changeset
436 ext = NULL;
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diff changeset
437 numext = 0;
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diff changeset
438 } else {
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diff changeset
439 numext = pgdav->repository->prop_ext->count;
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diff changeset
440 ext = pool_calloc(rq->sn->pool, numext, sizeof(PgPropfindExtCol));
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diff changeset
441
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diff changeset
442 if(rq->allprop) {
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diff changeset
443 // the map pgdav->repository->prop_ext contains all property extensions
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444 // we can just convert the map to an array
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diff changeset
445 UcxMapIterator i = ucx_map_iterator(pgdav->repository->prop_ext);
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diff changeset
446 PgPropertyStoreExt *cfg_ext;
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diff changeset
447 int j = 0;
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448 UCX_MAP_FOREACH(key, cfg_ext, i) {
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449 PgPropfindExtCol extcol;
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450 extcol.ext = cfg_ext;
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451 extcol.field_num = -1; // get the field_num after the PQexec
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diff changeset
452 ext[j++] = extcol;
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diff changeset
453 }
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diff changeset
454 } else {
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diff changeset
455 WebdavPListIterator i = webdav_plist_iterator(outplist);
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diff changeset
456 WebdavPList *cur;
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457 int j = 0;
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458 while(webdav_plist_iterator_next(&i, &cur)) {
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diff changeset
459 WSNamespace *ns = cur->property->namespace;
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diff changeset
460 if(ns) {
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461 UcxKey pkey = webdav_property_key((const char*)ns->href, cur->property->name);
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diff changeset
462 PgPropertyStoreExt *cfg_ext = ucx_map_get(pgdav->repository->prop_ext, pkey);
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463 char *pkey_data = pkey.data;
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diff changeset
464 free((void*)pkey.data);
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diff changeset
465 if(cfg_ext) {
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466 PgPropfindExtCol extcol;
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467 extcol.ext = cfg_ext;
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468 extcol.field_num = -1; // get the field_num after the PQexec
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diff changeset
469 ext[j++] = extcol;
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diff changeset
470
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diff changeset
471 webdav_plist_iterator_remove_current(&i);
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diff changeset
472 }
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diff changeset
473 }
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diff changeset
474 }
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diff changeset
475 numext = j;
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diff changeset
476 }
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diff changeset
477
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diff changeset
478 qsort(ext, numext, sizeof(PgPropfindExtCol), propfind_ext_cmp);
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
479 }
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diff changeset
480
375
32b8017f5308 build pg propfind query from components
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481 // create sql query
306
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482 const char *query = NULL;
375
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diff changeset
483 UcxBuffer *sql = ucx_buffer_new(NULL, 2048, UCX_BUFFER_AUTOEXTEND);
376
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
484 if(pg_create_propfind_query(rq, iscollection, ext, numext, sql)) {
306
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diff changeset
485 return 1;
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486 }
375
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diff changeset
487 query = sql->space;
306
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488
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489 // get all resources and properties
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490 char resource_id_str[32];
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491 snprintf(resource_id_str, 32, "%" PRId64, resource_id);
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492
307
8787cb5ebab3 fix href in pg propfind response
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493 size_t href_len = strlen(href);
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494 char *href_param = pool_malloc(rq->sn->pool, href_len + 1);
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495 memcpy(href_param, href, href_len);
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496 if(href_param[href_len-1] == '/') {
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497 href_len--;
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498 }
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499 href_param[href_len] = '\0';
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500
315
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501 // if allprop is false, create array pair for xmlns/property names
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502 UcxBuffer *xmlns_buf = NULL;
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503 UcxBuffer *pname_buf = NULL;
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504 char *xmlns_param = NULL;
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505 char *pname_param = NULL;
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506 int nparam = 2;
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diff changeset
507 if(!rq->allprop) {
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diff changeset
508 size_t bufsize = rq->propcount < 200 ? 8 + rq->propcount * 32 : 4096;
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parents: 314
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509 xmlns_buf = ucx_buffer_new(NULL, bufsize, UCX_BUFFER_AUTOEXTEND);
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diff changeset
510 if(!xmlns_buf) {
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diff changeset
511 return 1;
b608b7aa43a6 fix sql query for selecting specific properties
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diff changeset
512 }
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diff changeset
513 pname_buf = ucx_buffer_new(NULL, bufsize, UCX_BUFFER_AUTOEXTEND);
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diff changeset
514 if(!pname_buf) {
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diff changeset
515 ucx_buffer_free(xmlns_buf);
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516 return 1;
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diff changeset
517 }
376
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
518 if(pg_create_property_param_arrays(*outplist, xmlns_buf, pname_buf)) {
315
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519 ucx_buffer_free(xmlns_buf);
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520 ucx_buffer_free(pname_buf);
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diff changeset
521 return 1;
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diff changeset
522 }
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diff changeset
523 xmlns_param = xmlns_buf->space;
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diff changeset
524 pname_param = pname_buf->space;
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diff changeset
525 nparam = 4;
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diff changeset
526 }
307
8787cb5ebab3 fix href in pg propfind response
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diff changeset
527
315
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528 const char* params[4] = { resource_id_str, href_param, xmlns_param, pname_param };
306
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diff changeset
529 PGresult *result = PQexecParams(
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
530 pgdav->connection,
315
b608b7aa43a6 fix sql query for selecting specific properties
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diff changeset
531 query,
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diff changeset
532 nparam, // number of parameters
306
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533 NULL,
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diff changeset
534 params, // parameter value
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diff changeset
535 NULL,
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diff changeset
536 NULL,
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diff changeset
537 0); // 0: result in text format
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
538 int nrows = PQntuples(result);
307
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diff changeset
539 pool_free(rq->sn->pool, href_param);
315
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diff changeset
540 if(xmlns_buf) {
b608b7aa43a6 fix sql query for selecting specific properties
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diff changeset
541 ucx_buffer_free(xmlns_buf);
b608b7aa43a6 fix sql query for selecting specific properties
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542 ucx_buffer_free(pname_buf);
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diff changeset
543 }
306
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diff changeset
544 if(nrows < 1) {
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
545 PQclear(result);
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diff changeset
546 return 1;
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
547 }
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
548
300
0e3f275b2492 add instance field to webdav backend struct
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diff changeset
549 PgPropfind *pg = pool_malloc(rq->sn->pool, sizeof(PgPropfind));
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parents: 299
diff changeset
550 rq->userdata = pg;
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diff changeset
551
306
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diff changeset
552 pg->path = path;
e03737cea6e2 add semi functional pg propfind handler
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parents: 303
diff changeset
553 pg->resource_id = resource_id;
331
ab26980faad6 implement allprop in default and postgresql webdav backends
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parents: 324
diff changeset
554 pg->vfsproperties = webdav_vfs_properties(outplist, TRUE, rq->allprop, 0);
306
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diff changeset
555 pg->result = result;
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parents: 303
diff changeset
556 pg->nrows = nrows;
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diff changeset
557
376
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diff changeset
558 pg->ext = ext;
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diff changeset
559 pg->numext = numext;
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diff changeset
560 if(ext) {
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
561 // get field_nums for all property extensions
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diff changeset
562 for(int i=0;i<numext;i++) {
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diff changeset
563 PgPropfindExtCol *c = &ext[i];
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
564 c->field_num = PQfnumber(result, c->ext->column);
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parents: 375
diff changeset
565 }
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
566 }
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
567
306
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568 return 0;
299
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
569 }
f927ef81a12b add empty pg webdav funcs
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
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570
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571 int pg_dav_propfind_do(
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572 WebdavPropfindRequest *rq,
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573 WebdavResponse *response,
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574 VFS_DIR parent,
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575 WebdavResource *resource,
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576 struct stat *s)
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577 {
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578 PgPropfind *pg = rq->userdata;
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579 pool_handle_t *pool = rq->sn->pool;
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580 PGresult *result = pg->result;
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581 WebdavVFSProperties vfsprops = pg->vfsproperties;
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582
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583 WSBool vfsprops_set = 0; // are live properties added to the response?
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584 WSBool extprops_set = 0; // are extended properties added to the response?
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585 int64_t current_resource_id = pg->resource_id;
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586 for(int r=0;r<pg->nrows;r++) {
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587 // columns:
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588 // 0: path
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589 // 1: resource_id
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590 // 2: parent_id
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591 // 3: nodename
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592 // 4: iscollection
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593 // 5: lastmodified
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594 // 6: creationdate
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595 // 7: contentlength
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596 // 8: etag
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597 // 9: property prefix
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598 // 10: property xmlns
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599 // 11: property name
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600 // 12: property lang
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601 // 13: property nsdeflist
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602 // 14: property value
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603
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604 char *path = PQgetvalue(result, r, 0);
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605 char *res_id = PQgetvalue(result, r, 1);
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606 char *iscollection_str = PQgetvalue(result, r, 4);
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607 WSBool iscollection = iscollection_str && iscollection_str[0] == 't';
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608 int64_t resource_id;
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609 if(!util_strtoint(res_id, &resource_id)) {
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610 log_ereport(LOG_FAILURE, "pg_dav_propfind_do: cannot convert resource_id '%s' to int", res_id);
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611 return 1;
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612 }
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613
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614 if(resource_id != current_resource_id) {
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615 // create a href string for the new resource
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616 // if the resource is a collection, it should have a trailing '/'
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617 size_t pathlen = strlen(path);
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618 if(pathlen == 0) {
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619 log_ereport(LOG_FAILURE, "pg_dav_propfind_do: query returned invalid path");
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620 return 1;
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621 }
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622 if(pathlen > PG_MAX_PATH_LEN) {
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623 log_ereport(LOG_FAILURE, "pg_dav_propfind_do: path too long: resource_id: %s", res_id);
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624 return 1;
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625 }
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626 char *newres_href = pool_malloc(pool, (pathlen*3)+2);
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627 util_uri_escape(newres_href, path);
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628 if(iscollection && path[pathlen-1] != '/') {
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629 size_t newres_href_len = strlen(newres_href);
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630 newres_href[newres_href_len] = '/';
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631 newres_href[newres_href_len+1] = '\0';
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632 }
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633
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634 // new resource
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635 resource = response->addresource(response, newres_href);
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636 vfsprops_set = FALSE;
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637 current_resource_id = resource_id;
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638 }
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639
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640 // standard webdav live properties
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641 if(!vfsprops_set) {
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642 if(vfsprops.getresourcetype) {
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643 if(iscollection) {
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644 resource->addproperty(resource, webdav_resourcetype_collection(), 200);
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645 } else {
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646 resource->addproperty(resource, webdav_resourcetype_empty(), 200);
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647 }
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648 }
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649
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650 char *lastmodified = PQgetvalue(result, r, 5);
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651 char *contentlength = PQgetvalue(result, r, 7);
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652 time_t t = pg_convert_timestamp(lastmodified);
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653
306
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654 if(vfsprops.getlastmodified) {
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655 struct tm tm;
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656 gmtime_r(&t, &tm);
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657
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658 char buf[HTTP_DATE_LEN+1];
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659 strftime(buf, HTTP_DATE_LEN, HTTP_DATE_FMT, &tm);
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660 webdav_resource_add_dav_stringproperty(resource, pool, "getlastmodified", buf, strlen(buf));
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661 }
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662 if(vfsprops.creationdate) {
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663 char *creationdate = PQgetvalue(result, r, 6);
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664 webdav_resource_add_dav_stringproperty(resource, pool, "creationdate", creationdate, strlen(creationdate));
306
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665 }
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666 if(vfsprops.getcontentlength && !iscollection) {
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667 webdav_resource_add_dav_stringproperty(resource, pool, "getcontentlength", contentlength, strlen(contentlength));
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668 }
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669 if(vfsprops.getetag) {
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670 char *etag = PQgetvalue(result, r, 8);
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671 if(!PQgetisnull(result, r, 8)) {
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672 webdav_resource_add_dav_stringproperty(resource, pool, "getetag", etag, strlen(etag));
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673 } else {
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674 int64_t ctlen;
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675 if(util_strtoint(contentlength, &ctlen)) {
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676 char etag[MAX_ETAG];
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677 http_format_etag(rq->sn, rq->rq, etag, MAX_ETAG, ctlen, t);
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678 webdav_resource_add_dav_stringproperty(resource, pool, "getetag", etag, strlen(etag));
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679 }
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680 }
306
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681 }
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682
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683 vfsprops_set = TRUE;
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684 }
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685
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686 if(!extprops_set) {
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687 // extended properties
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688 if(pg->ext) {
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689 for(int extc=0;extc<pg->numext;extc++) {
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690 PgPropfindExtCol ext = pg->ext[extc];
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691 int fieldnum = ext.field_num;
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692
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693 if(!PQgetisnull(result, r, fieldnum)) {
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694 char *ext_value = PQgetvalue(result, r, fieldnum);
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695 int ext_value_len = PQgetlength(result, r, fieldnum);
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696 char ext_xmlns_prefix[32];
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697 snprintf(ext_xmlns_prefix, 32, "x%d", ext.ext->tableindex);
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698
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699 WebdavProperty *property = pool_malloc(pool, sizeof(WebdavProperty));
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700 property->lang = NULL;
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701 property->name = pool_strdup(pool, ext.ext->name);
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702
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703 xmlNs *namespace = pool_malloc(pool, sizeof(xmlNs));
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704 memset(namespace, 0, sizeof(struct _xmlNs));
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705 namespace->href = (xmlChar*)pool_strdup(pool, ext.ext->ns);
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706 namespace->prefix = (xmlChar*)pool_strdup(pool, ext_xmlns_prefix);
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707 property->namespace = namespace;
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diff changeset
708
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
709 char *content = pool_malloc(pool, ext_value_len+1);
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
710 memcpy(content, ext_value, ext_value_len);
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
711 content[ext_value_len] = '\0';
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 375
diff changeset
712
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
713 WebdavNSList *nslist = pool_malloc(pool, sizeof(WebdavNSList));
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parents: 375
diff changeset
714 nslist->namespace = namespace;
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diff changeset
715 nslist->prev = NULL;
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parents: 375
diff changeset
716 nslist->next = NULL;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
717
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
718 property->vtype = WS_VALUE_XML_DATA;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
719 property->value.data.data = content;
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parents: 375
diff changeset
720 property->value.data.length = ext_value_len;
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diff changeset
721 property->value.data.namespaces = nslist;
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diff changeset
722
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diff changeset
723 resource->addproperty(resource, property, 200);
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parents: 375
diff changeset
724 }
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diff changeset
725 }
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parents: 375
diff changeset
726 }
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parents: 375
diff changeset
727
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diff changeset
728 extprops_set = TRUE;
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diff changeset
729 }
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
730
306
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diff changeset
731 // dead properties
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diff changeset
732 if(!PQgetisnull(result, r, 9)) {
348
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
733 char *prefix = PQgetvalue(result, r, 9);
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
734 char *xmlns = PQgetvalue(result, r, 10);
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parents: 346
diff changeset
735 char *pname = PQgetvalue(result, r, 11);
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
736 char *lang = PQgetvalue(result, r, 12);
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
737 char *nsdef = PQgetvalue(result, r, 13);
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
738 char *pvalue = PQgetvalue(result, r, 14);
317
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diff changeset
739
348
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diff changeset
740 int pvalue_len = PQgetlength(result, r, 14);
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diff changeset
741 WSBool lang_isnull = PQgetisnull(result, r, 12);
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diff changeset
742 WSBool nsdef_isnull = PQgetisnull(result, r, 13);
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diff changeset
743 WSBool pvalue_isnull = PQgetisnull(result, r, 14);
306
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744
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diff changeset
745 WebdavProperty *property = pool_malloc(pool, sizeof(WebdavProperty));
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746 property->lang = NULL;
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diff changeset
747 property->name = pool_strdup(pool, pname);
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diff changeset
748
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diff changeset
749 xmlNs *namespace = pool_malloc(pool, sizeof(xmlNs));
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diff changeset
750 memset(namespace, 0, sizeof(struct _xmlNs));
307
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diff changeset
751 namespace->href = (xmlChar*)pool_strdup(pool, xmlns);
317
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752 namespace->prefix = (xmlChar*)pool_strdup(pool, prefix);
306
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diff changeset
753 property->namespace = namespace;
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754
317
09676b559091 store property prefix in the database
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755 if(!lang_isnull) {
318
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756 property->lang = pool_strdup(pool, lang);
317
09676b559091 store property prefix in the database
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757 }
09676b559091 store property prefix in the database
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parents: 315
diff changeset
758
09676b559091 store property prefix in the database
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diff changeset
759 if(!pvalue_isnull) {
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parents: 315
diff changeset
760 char *content = pool_malloc(pool, pvalue_len+1);
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parents: 315
diff changeset
761 memcpy(content, pvalue, pvalue_len);
09676b559091 store property prefix in the database
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parents: 315
diff changeset
762 content[pvalue_len] = '\0';
09676b559091 store property prefix in the database
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parents: 315
diff changeset
763
09676b559091 store property prefix in the database
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parents: 315
diff changeset
764 if(nsdef_isnull) {
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diff changeset
765 property->vtype = WS_VALUE_TEXT;
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diff changeset
766 property->value.text.str = content;
09676b559091 store property prefix in the database
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diff changeset
767 property->value.text.length = pvalue_len;
09676b559091 store property prefix in the database
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diff changeset
768 } else {
376
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diff changeset
769 WebdavNSList *nslist = wsxml_string2nslist(pool, nsdef);
324
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
770 property->vtype = WS_VALUE_XML_DATA;
376
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
771 property->value.data.data = content;
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
772 property->value.data.length = pvalue_len;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
773 property->value.data.namespaces = nslist;
324
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
774
317
09676b559091 store property prefix in the database
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parents: 315
diff changeset
775 }
09676b559091 store property prefix in the database
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parents: 315
diff changeset
776 }
306
e03737cea6e2 add semi functional pg propfind handler
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777
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diff changeset
778 resource->addproperty(resource, property, 200);
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diff changeset
779 }
313
3ad0b65ec838 test pg propfind response
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parents: 312
diff changeset
780 }
306
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
781
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
782 return 0;
299
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
783 }
f927ef81a12b add empty pg webdav funcs
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
784
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
785 int pg_dav_propfind_finish(WebdavPropfindRequest *rq) {
312
f7544e220a0f add pg propfind cleanup
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parents: 311
diff changeset
786 PgPropfind *pg = rq->userdata;
f7544e220a0f add pg propfind cleanup
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parents: 311
diff changeset
787 pool_handle_t *pool = rq->sn->pool;
f7544e220a0f add pg propfind cleanup
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parents: 311
diff changeset
788 PGresult *result = pg->result;
f7544e220a0f add pg propfind cleanup
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parents: 311
diff changeset
789
f7544e220a0f add pg propfind cleanup
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parents: 311
diff changeset
790 PQclear(result);
f7544e220a0f add pg propfind cleanup
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parents: 311
diff changeset
791
306
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
792 return 0;
299
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
793 }
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
794
318
60870dbac94f add basic pg proppatch implementation
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diff changeset
795 enum PgDavProp {
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diff changeset
796 PG_DAV_PROPPATCH_NOT_ALLOWED = 0,
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797 PG_DAV_CREATIONDATE,
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diff changeset
798 PG_DAV_DISPLAYNAME,
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diff changeset
799 PG_DAV_DEADPROP
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800 };
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diff changeset
801 /*
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802 * checks if the property can be manipulated
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diff changeset
803 */
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diff changeset
804 static enum PgDavProp proppatch_check_dav_prop(const char *name) {
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diff changeset
805 if(!strcmp(name, "getlastmodified")) {
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diff changeset
806 return PG_DAV_PROPPATCH_NOT_ALLOWED;
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parents: 317
diff changeset
807 } else if(!strcmp(name, "getcontentlength")) {
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diff changeset
808 return PG_DAV_PROPPATCH_NOT_ALLOWED;
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parents: 317
diff changeset
809 } else if(!strcmp(name, "resourcetype")) {
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parents: 317
diff changeset
810 return PG_DAV_PROPPATCH_NOT_ALLOWED;
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diff changeset
811 } else if(!strcmp(name, "getetag")) {
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diff changeset
812 return PG_DAV_PROPPATCH_NOT_ALLOWED;
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diff changeset
813 } else if(!strcmp(name, "creationdate")) {
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diff changeset
814 return PG_DAV_CREATIONDATE;
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diff changeset
815 } else if(!strcmp(name, "displayname")) {
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diff changeset
816 return PG_DAV_DISPLAYNAME;
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diff changeset
817 }
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818 return PG_DAV_DEADPROP;
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819 }
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diff changeset
820
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diff changeset
821 typedef struct {
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diff changeset
822 WebdavProperty *creationdate;
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diff changeset
823 WebdavProperty *displayname;
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diff changeset
824 int error;
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diff changeset
825 } PgProppatchOpResult;
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826
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diff changeset
827 typedef int(*pg_proppatch_func)(PgWebdavBackend*, WebdavProppatchRequest*, WebdavResource*, WebdavProperty*, void*);
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828
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diff changeset
829 /*
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diff changeset
830 * This function iterates the property list 'plist',
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diff changeset
831 * analyses if any DAV: property is in the list
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diff changeset
832 * and calls opfunc for the each property
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diff changeset
833 *
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diff changeset
834 * If the property list contains the properties creationdate or displayname,
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diff changeset
835 * the pointers to these properties will be stored in the result structure
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diff changeset
836 */
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diff changeset
837 static PgProppatchOpResult pg_proppatch_op(
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diff changeset
838 PgWebdavBackend *pgdav,
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diff changeset
839 WebdavProppatchRequest *request,
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diff changeset
840 WebdavResource *response,
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diff changeset
841 WebdavPList **plist,
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diff changeset
842 enum PgDavProp forbidden_extra,
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diff changeset
843 pg_proppatch_func opfunc,
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diff changeset
844 void *op_userdata)
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diff changeset
845 {
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846 PgProppatchOpResult result;
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diff changeset
847 result.creationdate = NULL;
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diff changeset
848 result.displayname = NULL;
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diff changeset
849 result.error = 0;
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850
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diff changeset
851 WebdavPListIterator i = webdav_plist_iterator(plist);
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852 WebdavPList *cur;
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853 while(webdav_plist_iterator_next(&i, &cur)) {
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854 WebdavProperty *property = cur->property;
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855 WSNamespace *ns = property->namespace;
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856 if(!ns) {
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857 continue; // maybe we should abort
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858 }
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859
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860 // check if the property is a DAV: property that requires special
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861 // handling
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862 // get* properties can't be manipulated
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863 // some properties can't be removed
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864 if(!strcmp((const char*)ns->href, "DAV:")) {
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865 const char *name = property->name;
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866 enum PgDavProp davprop = proppatch_check_dav_prop(name);
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867 if(davprop != PG_DAV_DEADPROP) {
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868 if(davprop == PG_DAV_PROPPATCH_NOT_ALLOWED || davprop == forbidden_extra) {
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869 response->addproperty(response, property, 409);
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870 } else if(davprop == PG_DAV_CREATIONDATE) {
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871 result.creationdate = property;
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872 } else if(davprop == PG_DAV_DISPLAYNAME) {
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873 result.displayname = property;
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874 }
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875 webdav_plist_iterator_remove_current(&i);
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876 continue;
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877 }
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878 }
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879
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880 // call op func (set, remove specific code)
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881 if(opfunc(pgdav, request, response, property, op_userdata)) {
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882 result.error = 1;
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883 break;
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884 }
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885
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886 webdav_plist_iterator_remove_current(&i);
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887 }
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888
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889 return result;
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890 }
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891
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892 static int pg_dav_set_property(
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893 PgWebdavBackend *pgdav,
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894 WebdavProppatchRequest *request,
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895 WebdavResource *response,
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896 WebdavProperty *property,
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897 void *userdata)
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898 {
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899 pool_handle_t *pool = request->sn->pool;
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900 WSNamespace *ns = property->namespace;
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901 char *resource_id_str = userdata;
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902 int ret = 0;
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903
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904 // convert the property value to WSXmlData
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905 // property->vtype == WS_VALUE_XML_NODE should always be true
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906 WSXmlData *property_value = property->vtype == WS_VALUE_XML_NODE ? wsxml_node2data(pool, property->value.node) : NULL;
324
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907 char *value_str = NULL;
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908 char *nsdef_str = NULL;
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909 if(property_value) {
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910 value_str = property_value->data;
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911 if(property_value->namespaces) {
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912 nsdef_str = wsxml_nslist2string(pool, property_value->namespaces);
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913 if(!nsdef_str) {
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914 return 1; // OOM
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915 }
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916 }
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917 }
318
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918
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919 // exec sql
324
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920 const char* params[7] = { resource_id_str, (const char*)ns->prefix, (const char*)ns->href, property->name, NULL, nsdef_str, value_str};
318
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921 PGresult *result = PQexecParams(
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922 pgdav->connection,
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923 sql_proppatch_set,
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924 7, // number of parameters
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925 NULL,
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926 params, // parameter value
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927 NULL,
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928 NULL,
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929 0); // 0: result in text format
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930
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931 if(PQresultStatus(result) != PGRES_COMMAND_OK) {
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932 response->addproperty(response, property, 500);
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933 //printf(PQerrorMessage(pgdav->connection));
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934 //fflush(stdout);
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935 ret = 1;
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936 } else {
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937 response->addproperty(response, property, 200);
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938 }
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939 PQclear(result);
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940 if(value_str) pool_free(pool, value_str);
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941
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942 return ret;
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943 }
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944
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945
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946 static int pg_dav_remove_property(
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947 PgWebdavBackend *pgdav,
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948 WebdavProppatchRequest *request,
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949 WebdavResource *response,
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950 WebdavProperty *property,
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951 void *userdata)
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952 {
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953 pool_handle_t *pool = request->sn->pool;
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954 WSNamespace *ns = property->namespace;
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955 char *resource_id_str = userdata;
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956 int ret = 0;
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957
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958 // exec sql
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959 const char* params[3] = { resource_id_str, (const char*)ns->href, property->name };
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960 PGresult *result = PQexecParams(
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961 pgdav->connection,
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962 sql_proppatch_remove,
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963 3, // number of parameters
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964 NULL,
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965 params, // parameter value
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966 NULL,
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967 NULL,
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968 0); // 0: result in text format
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969
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970 if(PQresultStatus(result) != PGRES_COMMAND_OK) {
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971 response->addproperty(response, property, 500);
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972 //printf(PQerrorMessage(pgdav->connection));
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973 //fflush(stdout);
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974 ret = 1;
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975 }
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976 PQclear(result);
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977
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978 return ret;
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979 }
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980
299
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parents:
diff changeset
981 int pg_dav_proppatch_do(
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parents:
diff changeset
982 WebdavProppatchRequest *request,
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
983 WebdavResource *response,
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
984 VFSFile *file,
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
985 WebdavPList **out_set,
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
986 WebdavPList **out_remove)
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
987 {
318
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988 PgWebdavBackend *pgdav = request->dav->instance;
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diff changeset
989 pool_handle_t *pool = request->sn->pool;
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990 char *path = pblock_findkeyval(pb_key_path, request->rq->vars);
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diff changeset
991
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992 // check if the resource exists, we also need the resource_id
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diff changeset
993 int64_t parent_id;
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994 int64_t resource_id;
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995 const char *resourcename;
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996 WSBool iscollection;
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diff changeset
997 int res_errno = 0;
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diff changeset
998 int err = pg_resolve_path(
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999 pgdav->connection,
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diff changeset
1000 path,
374
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1001 pgdav->root_resource_id_str,
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1002 &parent_id,
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1003 &resource_id,
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1004 NULL, // OID
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1005 &resourcename,
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1006 &iscollection,
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1007 NULL, // stat
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1008 NULL, // etag
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1009 &res_errno);
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1010
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1011 if(err) {
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1012 return 1;
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1013 }
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1014
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1015 // because proppatch must be atomic and we have multiple sql
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1016 // queries and other backends that do stuff that could fail
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1017 // we need the possibility to reverse all changes
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1018 // we use a transaction savepoint for this
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1019 PGresult *result = PQexec(pgdav->connection, "savepoint proppatch;");
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1020 ExecStatusType execStatus = PQresultStatus(result);
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1021 PQclear(result);
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1022 if(execStatus != PGRES_COMMAND_OK) {
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1023 return 1;
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1024 }
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1025
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1026 char resource_id_str[32];
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1027 snprintf(resource_id_str, 32, "%" PRId64, resource_id);
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1028
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1029 int ret = 0;
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1030 PgProppatchOpResult set_res = pg_proppatch_op(
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1031 pgdav,
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1032 request,
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1033 response,
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1034 out_set,
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1035 PG_DAV_PROPPATCH_NOT_ALLOWED,
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1036 pg_dav_set_property,
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1037 resource_id_str);
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1038 if(set_res.error) {
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1039 return 1;
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1040 }
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1041 PgProppatchOpResult rm_res = pg_proppatch_op(
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1042 pgdav,
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1043 request,
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1044 response,
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1045 out_remove,
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1046 PG_DAV_CREATIONDATE, // creationdate can't be removed
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1047 pg_dav_remove_property,
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1048 resource_id_str);
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1049 if(rm_res.error) {
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1050 return 1;
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1051 }
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1052
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1053 return ret;
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1054 }
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1055
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1056 int pg_dav_proppatch_finish(
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1057 WebdavProppatchRequest *request,
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1058 WebdavResource *response,
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1059 VFSFile *file,
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1060 WSBool commit)
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1061 {
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1062 PgWebdavBackend *pgdav = request->dav->instance;
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1063 int ret = 0;
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1064 if(!commit) {
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1065 PGresult *result = PQexec(pgdav->connection, "rollback to savepoint proppatch;");
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1066 if(PQresultStatus(result) != PGRES_COMMAND_OK) {
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1067 log_ereport(LOG_FAILURE, "pg_dav_proppatch_finish: rollback failed: %s", PQerrorMessage(pgdav->connection));
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1068 ret = 1;
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1069 }
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1070 PQclear(result);
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1071 }
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1072 return ret;
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1073 }

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