src/server/plugins/postgresql/webdav.c

Tue, 01 Nov 2022 15:39:21 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Tue, 01 Nov 2022 15:39:21 +0100
changeset 401
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parent 384
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child 402
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permissions
-rw-r--r--

fix invalid propfind pg queries created for allprop requests on collections

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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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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 = "\
401
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149 order by case when r.resource_id = $1 then 0 else 1 end, r.nodename, r.resource_id";
375
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150
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151 static const char *sql_propfind_order_depth_infinity = "\
401
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152 order by replace(ppath, '/', chr(1)), r.resource_id";
375
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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
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181 void* pg_webdav_init(ServerConfiguration *cfg, pool_handle_t *pool, WSConfigNode *config) {
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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) {
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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");
401
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392
375
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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,
374
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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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diff changeset
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
380
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diff changeset
431 // store resource_id in rq->vars, maybe some other modules
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diff changeset
432 // like to use it
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433 char resource_id_str[32];
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diff changeset
434 snprintf(resource_id_str, 32, "%" PRId64, resource_id);
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435 pblock_nvinsert("resource_id",resource_id_str, rq->rq->vars);
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diff changeset
436
376
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437 // create a list of requsted extended properties
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438 PgPropfindExtCol *ext;
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439 size_t numext;
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440 if(pgdav->repository->ntables == 0) {
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441 // no property extensions configured
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442 ext = NULL;
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443 numext = 0;
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444 } else {
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445 numext = pgdav->repository->prop_ext->count;
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446 ext = pool_calloc(rq->sn->pool, numext, sizeof(PgPropfindExtCol));
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447
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448 if(rq->allprop) {
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449 // the map pgdav->repository->prop_ext contains all property extensions
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450 // we can just convert the map to an array
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451 UcxMapIterator i = ucx_map_iterator(pgdav->repository->prop_ext);
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452 PgPropertyStoreExt *cfg_ext;
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453 int j = 0;
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454 UCX_MAP_FOREACH(key, cfg_ext, i) {
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455 PgPropfindExtCol extcol;
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456 extcol.ext = cfg_ext;
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457 extcol.field_num = -1; // get the field_num after the PQexec
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458 ext[j++] = extcol;
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459 }
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460 } else {
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461 WebdavPListIterator i = webdav_plist_iterator(outplist);
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462 WebdavPList *cur;
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463 int j = 0;
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464 while(webdav_plist_iterator_next(&i, &cur)) {
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465 WSNamespace *ns = cur->property->namespace;
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466 if(ns) {
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467 UcxKey pkey = webdav_property_key((const char*)ns->href, cur->property->name);
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468 PgPropertyStoreExt *cfg_ext = ucx_map_get(pgdav->repository->prop_ext, pkey);
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469 free((void*)pkey.data);
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470 if(cfg_ext) {
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diff changeset
471 PgPropfindExtCol extcol;
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472 extcol.ext = cfg_ext;
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473 extcol.field_num = -1; // get the field_num after the PQexec
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474 ext[j++] = extcol;
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475
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diff changeset
476 webdav_plist_iterator_remove_current(&i);
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477 }
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478 }
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479 }
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diff changeset
480 numext = j;
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481 }
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482
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483 qsort(ext, numext, sizeof(PgPropfindExtCol), propfind_ext_cmp);
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484 }
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diff changeset
485
375
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486 // create sql query
306
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487 const char *query = NULL;
375
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488 UcxBuffer *sql = ucx_buffer_new(NULL, 2048, UCX_BUFFER_AUTOEXTEND);
376
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489 if(pg_create_propfind_query(rq, iscollection, ext, numext, sql)) {
306
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490 return 1;
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491 }
375
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492 query = sql->space;
306
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493
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494 // get all resources and properties
307
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495 size_t href_len = strlen(href);
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496 char *href_param = pool_malloc(rq->sn->pool, href_len + 1);
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497 memcpy(href_param, href, href_len);
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498 if(href_param[href_len-1] == '/') {
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499 href_len--;
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500 }
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501 href_param[href_len] = '\0';
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502
315
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503 // if allprop is false, create array pair for xmlns/property names
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504 UcxBuffer *xmlns_buf = NULL;
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505 UcxBuffer *pname_buf = NULL;
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506 char *xmlns_param = NULL;
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507 char *pname_param = NULL;
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diff changeset
508 int nparam = 2;
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diff changeset
509 if(!rq->allprop) {
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diff changeset
510 size_t bufsize = rq->propcount < 200 ? 8 + rq->propcount * 32 : 4096;
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511 xmlns_buf = ucx_buffer_new(NULL, bufsize, UCX_BUFFER_AUTOEXTEND);
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512 if(!xmlns_buf) {
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513 return 1;
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514 }
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515 pname_buf = ucx_buffer_new(NULL, bufsize, UCX_BUFFER_AUTOEXTEND);
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diff changeset
516 if(!pname_buf) {
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517 ucx_buffer_free(xmlns_buf);
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518 return 1;
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diff changeset
519 }
376
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diff changeset
520 if(pg_create_property_param_arrays(*outplist, xmlns_buf, pname_buf)) {
315
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521 ucx_buffer_free(xmlns_buf);
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522 ucx_buffer_free(pname_buf);
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523 return 1;
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diff changeset
524 }
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diff changeset
525 xmlns_param = xmlns_buf->space;
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diff changeset
526 pname_param = pname_buf->space;
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diff changeset
527 nparam = 4;
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528 }
307
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diff changeset
529
315
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530 const char* params[4] = { resource_id_str, href_param, xmlns_param, pname_param };
306
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diff changeset
531 PGresult *result = PQexecParams(
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diff changeset
532 pgdav->connection,
315
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533 query,
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534 nparam, // number of parameters
306
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535 NULL,
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536 params, // parameter value
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537 NULL,
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diff changeset
538 NULL,
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diff changeset
539 0); // 0: result in text format
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540 int nrows = PQntuples(result);
307
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diff changeset
541 pool_free(rq->sn->pool, href_param);
315
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diff changeset
542 if(xmlns_buf) {
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diff changeset
543 ucx_buffer_free(xmlns_buf);
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544 ucx_buffer_free(pname_buf);
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diff changeset
545 }
306
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diff changeset
546 if(nrows < 1) {
401
d2bfd11d3f8f fix invalid propfind pg queries created for allprop requests on collections
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parents: 384
diff changeset
547 // we resolved the path, so the resource exists and nrows should
d2bfd11d3f8f fix invalid propfind pg queries created for allprop requests on collections
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parents: 384
diff changeset
548 // be >= 1
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parents: 384
diff changeset
549 if(PQresultStatus(result) != PGRES_TUPLES_OK) {
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parents: 384
diff changeset
550 log_ereport(LOG_FAILURE, "pg_dav_propfind_init: %s", PQerrorMessage(pgdav->connection));
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diff changeset
551 }
306
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552 PQclear(result);
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553 return 1;
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diff changeset
554 }
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
555
300
0e3f275b2492 add instance field to webdav backend struct
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diff changeset
556 PgPropfind *pg = pool_malloc(rq->sn->pool, sizeof(PgPropfind));
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diff changeset
557 rq->userdata = pg;
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558
306
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diff changeset
559 pg->path = path;
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diff changeset
560 pg->resource_id = resource_id;
331
ab26980faad6 implement allprop in default and postgresql webdav backends
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parents: 324
diff changeset
561 pg->vfsproperties = webdav_vfs_properties(outplist, TRUE, rq->allprop, 0);
306
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diff changeset
562 pg->result = result;
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563 pg->nrows = nrows;
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diff changeset
564
376
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diff changeset
565 pg->ext = ext;
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diff changeset
566 pg->numext = numext;
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diff changeset
567 if(ext) {
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568 // get field_nums for all property extensions
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569 for(int i=0;i<numext;i++) {
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570 PgPropfindExtCol *c = &ext[i];
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571 c->field_num = PQfnumber(result, c->ext->column);
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572 }
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573 }
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574
306
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575 return 0;
299
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576 }
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577
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578 int pg_dav_propfind_do(
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579 WebdavPropfindRequest *rq,
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580 WebdavResponse *response,
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581 VFS_DIR parent,
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582 WebdavResource *resource,
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583 struct stat *s)
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584 {
306
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585 PgPropfind *pg = rq->userdata;
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586 pool_handle_t *pool = rq->sn->pool;
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587 PGresult *result = pg->result;
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588 WebdavVFSProperties vfsprops = pg->vfsproperties;
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589
313
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590 WSBool vfsprops_set = 0; // are live properties added to the response?
376
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591 WSBool extprops_set = 0; // are extended properties added to the response?
306
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592 int64_t current_resource_id = pg->resource_id;
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593 for(int r=0;r<pg->nrows;r++) {
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594 // columns:
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595 // 0: path
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596 // 1: resource_id
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597 // 2: parent_id
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598 // 3: nodename
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599 // 4: iscollection
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600 // 5: lastmodified
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601 // 6: creationdate
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602 // 7: contentlength
348
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603 // 8: etag
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604 // 9: property prefix
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605 // 10: property xmlns
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606 // 11: property name
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607 // 12: property lang
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608 // 13: property nsdeflist
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609 // 14: property value
306
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610
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611 char *path = PQgetvalue(result, r, 0);
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612 char *res_id = PQgetvalue(result, r, 1);
307
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613 char *iscollection_str = PQgetvalue(result, r, 4);
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614 WSBool iscollection = iscollection_str && iscollection_str[0] == 't';
306
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615 int64_t resource_id;
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616 if(!util_strtoint(res_id, &resource_id)) {
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617 log_ereport(LOG_FAILURE, "pg_dav_propfind_do: cannot convert resource_id '%s' to int", res_id);
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618 return 1;
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619 }
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620
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621 if(resource_id != current_resource_id) {
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622 // create a href string for the new resource
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623 // if the resource is a collection, it should have a trailing '/'
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624 size_t pathlen = strlen(path);
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625 if(pathlen == 0) {
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626 log_ereport(LOG_FAILURE, "pg_dav_propfind_do: query returned invalid path");
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627 return 1;
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628 }
356
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629 if(pathlen > PG_MAX_PATH_LEN) {
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630 log_ereport(LOG_FAILURE, "pg_dav_propfind_do: path too long: resource_id: %s", res_id);
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631 return 1;
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632 }
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633 char *newres_href = pool_malloc(pool, (pathlen*3)+2);
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634 util_uri_escape(newres_href, path);
307
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635 if(iscollection && path[pathlen-1] != '/') {
356
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636 size_t newres_href_len = strlen(newres_href);
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637 newres_href[newres_href_len] = '/';
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638 newres_href[newres_href_len+1] = '\0';
307
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639 }
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640
306
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641 // new resource
307
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642 resource = response->addresource(response, newres_href);
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643 vfsprops_set = FALSE;
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644 extprops_set = FALSE;
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645 current_resource_id = resource_id;
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646 }
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647
313
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648 // standard webdav live properties
306
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649 if(!vfsprops_set) {
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650 if(vfsprops.getresourcetype) {
307
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651 if(iscollection) {
306
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652 resource->addproperty(resource, webdav_resourcetype_collection(), 200);
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653 } else {
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654 resource->addproperty(resource, webdav_resourcetype_empty(), 200);
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655 }
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656 }
348
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657
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658 char *lastmodified = PQgetvalue(result, r, 5);
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659 char *contentlength = PQgetvalue(result, r, 7);
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660 time_t t = pg_convert_timestamp(lastmodified);
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661
306
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662 if(vfsprops.getlastmodified) {
311
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663 struct tm tm;
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664 gmtime_r(&t, &tm);
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665
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666 char buf[HTTP_DATE_LEN+1];
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667 strftime(buf, HTTP_DATE_LEN, HTTP_DATE_FMT, &tm);
314
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668 webdav_resource_add_dav_stringproperty(resource, pool, "getlastmodified", buf, strlen(buf));
306
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669 }
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670 if(vfsprops.creationdate) {
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671 char *creationdate = PQgetvalue(result, r, 6);
311
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672 webdav_resource_add_dav_stringproperty(resource, pool, "creationdate", creationdate, strlen(creationdate));
306
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673 }
314
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674 if(vfsprops.getcontentlength && !iscollection) {
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675 webdav_resource_add_dav_stringproperty(resource, pool, "getcontentlength", contentlength, strlen(contentlength));
306
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676 }
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677 if(vfsprops.getetag) {
348
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678 char *etag = PQgetvalue(result, r, 8);
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679 if(!PQgetisnull(result, r, 8)) {
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680 webdav_resource_add_dav_stringproperty(resource, pool, "getetag", etag, strlen(etag));
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681 } else {
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682 int64_t ctlen;
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683 if(util_strtoint(contentlength, &ctlen)) {
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684 char etag[MAX_ETAG];
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685 http_format_etag(rq->sn, rq->rq, etag, MAX_ETAG, ctlen, t);
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686 webdav_resource_add_dav_stringproperty(resource, pool, "getetag", etag, strlen(etag));
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687 }
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688 }
306
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689 }
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690
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691 vfsprops_set = TRUE;
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692 }
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693
376
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694 if(!extprops_set) {
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diff changeset
695 // extended properties
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diff changeset
696 if(pg->ext) {
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diff changeset
697 for(int extc=0;extc<pg->numext;extc++) {
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diff changeset
698 PgPropfindExtCol ext = pg->ext[extc];
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diff changeset
699 int fieldnum = ext.field_num;
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diff changeset
700
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diff changeset
701 if(!PQgetisnull(result, r, fieldnum)) {
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diff changeset
702 char *ext_value = PQgetvalue(result, r, fieldnum);
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diff changeset
703 int ext_value_len = PQgetlength(result, r, fieldnum);
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diff changeset
704 char ext_xmlns_prefix[32];
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diff changeset
705 snprintf(ext_xmlns_prefix, 32, "x%d", ext.ext->tableindex);
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
706
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
707 WebdavProperty *property = pool_malloc(pool, sizeof(WebdavProperty));
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
708 property->lang = NULL;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
709 property->name = pool_strdup(pool, ext.ext->name);
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
710
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
711 xmlNs *namespace = pool_malloc(pool, sizeof(xmlNs));
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
712 memset(namespace, 0, sizeof(struct _xmlNs));
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
713 namespace->href = (xmlChar*)pool_strdup(pool, ext.ext->ns);
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
714 namespace->prefix = (xmlChar*)pool_strdup(pool, ext_xmlns_prefix);
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
715 property->namespace = namespace;
61d481d3c2e4 Add support for extended properties in pg propfind
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 375
diff changeset
716
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
717 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
718 memcpy(content, ext_value, ext_value_len);
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parents: 375
diff changeset
719 content[ext_value_len] = '\0';
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
720
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
721 WebdavNSList *nslist = pool_malloc(pool, sizeof(WebdavNSList));
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parents: 375
diff changeset
722 nslist->namespace = namespace;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
723 nslist->prev = NULL;
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parents: 375
diff changeset
724 nslist->next = NULL;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
725
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
726 property->vtype = WS_VALUE_XML_DATA;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
727 property->value.data.data = content;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
728 property->value.data.length = ext_value_len;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
729 property->value.data.namespaces = nslist;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
730
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
731 resource->addproperty(resource, property, 200);
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parents: 375
diff changeset
732 }
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
733 }
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
734 }
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diff changeset
735
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
736 extprops_set = TRUE;
61d481d3c2e4 Add support for extended properties in pg propfind
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parents: 375
diff changeset
737 }
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
738
306
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739 // dead properties
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diff changeset
740 if(!PQgetisnull(result, r, 9)) {
348
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
741 char *prefix = PQgetvalue(result, r, 9);
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
742 char *xmlns = PQgetvalue(result, r, 10);
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
743 char *pname = PQgetvalue(result, r, 11);
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
744 char *lang = PQgetvalue(result, r, 12);
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
745 char *nsdef = PQgetvalue(result, r, 13);
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
746 char *pvalue = PQgetvalue(result, r, 14);
317
09676b559091 store property prefix in the database
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diff changeset
747
348
bdd31584141f implement etag in pg propfind
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parents: 346
diff changeset
748 int pvalue_len = PQgetlength(result, r, 14);
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diff changeset
749 WSBool lang_isnull = PQgetisnull(result, r, 12);
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parents: 346
diff changeset
750 WSBool nsdef_isnull = PQgetisnull(result, r, 13);
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parents: 346
diff changeset
751 WSBool pvalue_isnull = PQgetisnull(result, r, 14);
306
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diff changeset
752
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diff changeset
753 WebdavProperty *property = pool_malloc(pool, sizeof(WebdavProperty));
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diff changeset
754 property->lang = NULL;
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diff changeset
755 property->name = pool_strdup(pool, pname);
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diff changeset
756
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parents: 303
diff changeset
757 xmlNs *namespace = pool_malloc(pool, sizeof(xmlNs));
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diff changeset
758 memset(namespace, 0, sizeof(struct _xmlNs));
307
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diff changeset
759 namespace->href = (xmlChar*)pool_strdup(pool, xmlns);
317
09676b559091 store property prefix in the database
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diff changeset
760 namespace->prefix = (xmlChar*)pool_strdup(pool, prefix);
306
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diff changeset
761 property->namespace = namespace;
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diff changeset
762
317
09676b559091 store property prefix in the database
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diff changeset
763 if(!lang_isnull) {
318
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diff changeset
764 property->lang = pool_strdup(pool, lang);
317
09676b559091 store property prefix in the database
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765 }
09676b559091 store property prefix in the database
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parents: 315
diff changeset
766
09676b559091 store property prefix in the database
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parents: 315
diff changeset
767 if(!pvalue_isnull) {
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parents: 315
diff changeset
768 char *content = pool_malloc(pool, pvalue_len+1);
09676b559091 store property prefix in the database
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parents: 315
diff changeset
769 memcpy(content, pvalue, pvalue_len);
09676b559091 store property prefix in the database
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parents: 315
diff changeset
770 content[pvalue_len] = '\0';
09676b559091 store property prefix in the database
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parents: 315
diff changeset
771
09676b559091 store property prefix in the database
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parents: 315
diff changeset
772 if(nsdef_isnull) {
09676b559091 store property prefix in the database
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parents: 315
diff changeset
773 property->vtype = WS_VALUE_TEXT;
09676b559091 store property prefix in the database
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parents: 315
diff changeset
774 property->value.text.str = content;
09676b559091 store property prefix in the database
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parents: 315
diff changeset
775 property->value.text.length = pvalue_len;
09676b559091 store property prefix in the database
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parents: 315
diff changeset
776 } else {
376
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diff changeset
777 WebdavNSList *nslist = wsxml_string2nslist(pool, nsdef);
324
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
778 property->vtype = WS_VALUE_XML_DATA;
376
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
779 property->value.data.data = content;
61d481d3c2e4 Add support for extended properties in pg propfind
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 375
diff changeset
780 property->value.data.length = pvalue_len;
61d481d3c2e4 Add support for extended properties in pg propfind
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diff changeset
781 property->value.data.namespaces = nslist;
324
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
782
317
09676b559091 store property prefix in the database
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parents: 315
diff changeset
783 }
09676b559091 store property prefix in the database
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parents: 315
diff changeset
784 }
306
e03737cea6e2 add semi functional pg propfind handler
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diff changeset
785
e03737cea6e2 add semi functional pg propfind handler
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parents: 303
diff changeset
786 resource->addproperty(resource, property, 200);
e03737cea6e2 add semi functional pg propfind handler
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parents: 303
diff changeset
787 }
313
3ad0b65ec838 test pg propfind response
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parents: 312
diff changeset
788 }
306
e03737cea6e2 add semi functional pg propfind handler
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parents: 303
diff changeset
789
e03737cea6e2 add semi functional pg propfind handler
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parents: 303
diff changeset
790 return 0;
299
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
791 }
f927ef81a12b add empty pg webdav funcs
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
792
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
793 int pg_dav_propfind_finish(WebdavPropfindRequest *rq) {
312
f7544e220a0f add pg propfind cleanup
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parents: 311
diff changeset
794 PgPropfind *pg = rq->userdata;
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parents: 311
diff changeset
795 pool_handle_t *pool = rq->sn->pool;
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diff changeset
796 PGresult *result = pg->result;
f7544e220a0f add pg propfind cleanup
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diff changeset
797
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parents: 311
diff changeset
798 PQclear(result);
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parents: 311
diff changeset
799
306
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800 return 0;
299
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
801 }
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
802
318
60870dbac94f add basic pg proppatch implementation
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diff changeset
803 enum PgDavProp {
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804 PG_DAV_PROPPATCH_NOT_ALLOWED = 0,
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805 PG_DAV_CREATIONDATE,
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diff changeset
806 PG_DAV_DISPLAYNAME,
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diff changeset
807 PG_DAV_DEADPROP
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808 };
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diff changeset
809 /*
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diff changeset
810 * checks if the property can be manipulated
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diff changeset
811 */
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diff changeset
812 static enum PgDavProp proppatch_check_dav_prop(const char *name) {
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parents: 317
diff changeset
813 if(!strcmp(name, "getlastmodified")) {
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diff changeset
814 return PG_DAV_PROPPATCH_NOT_ALLOWED;
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parents: 317
diff changeset
815 } else if(!strcmp(name, "getcontentlength")) {
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diff changeset
816 return PG_DAV_PROPPATCH_NOT_ALLOWED;
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diff changeset
817 } else if(!strcmp(name, "resourcetype")) {
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diff changeset
818 return PG_DAV_PROPPATCH_NOT_ALLOWED;
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diff changeset
819 } else if(!strcmp(name, "getetag")) {
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diff changeset
820 return PG_DAV_PROPPATCH_NOT_ALLOWED;
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diff changeset
821 } else if(!strcmp(name, "creationdate")) {
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diff changeset
822 return PG_DAV_CREATIONDATE;
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diff changeset
823 } else if(!strcmp(name, "displayname")) {
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diff changeset
824 return PG_DAV_DISPLAYNAME;
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diff changeset
825 }
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diff changeset
826 return PG_DAV_DEADPROP;
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diff changeset
827 }
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828
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diff changeset
829 typedef struct {
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diff changeset
830 WebdavProperty *creationdate;
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diff changeset
831 WebdavProperty *displayname;
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diff changeset
832 int error;
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833 } PgProppatchOpResult;
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834
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diff changeset
835 typedef int(*pg_proppatch_func)(PgWebdavBackend*, WebdavProppatchRequest*, WebdavResource*, WebdavProperty*, void*);
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diff changeset
836
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diff changeset
837 /*
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diff changeset
838 * This function iterates the property list 'plist',
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839 * analyses if any DAV: property is in the list
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840 * and calls opfunc for the each property
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diff changeset
841 *
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diff changeset
842 * If the property list contains the properties creationdate or displayname,
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diff changeset
843 * the pointers to these properties will be stored in the result structure
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diff changeset
844 */
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diff changeset
845 static PgProppatchOpResult pg_proppatch_op(
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diff changeset
846 PgWebdavBackend *pgdav,
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diff changeset
847 WebdavProppatchRequest *request,
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848 WebdavResource *response,
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849 WebdavPList **plist,
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850 enum PgDavProp forbidden_extra,
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diff changeset
851 pg_proppatch_func opfunc,
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852 void *op_userdata)
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853 {
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854 PgProppatchOpResult result;
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855 result.creationdate = NULL;
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856 result.displayname = NULL;
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857 result.error = 0;
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858
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859 WebdavPListIterator i = webdav_plist_iterator(plist);
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860 WebdavPList *cur;
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861 while(webdav_plist_iterator_next(&i, &cur)) {
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862 WebdavProperty *property = cur->property;
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863 WSNamespace *ns = property->namespace;
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864 if(!ns) {
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865 continue; // maybe we should abort
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866 }
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867
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868 // check if the property is a DAV: property that requires special
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869 // handling
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diff changeset
870 // get* properties can't be manipulated
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871 // some properties can't be removed
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872 if(!strcmp((const char*)ns->href, "DAV:")) {
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873 const char *name = property->name;
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874 enum PgDavProp davprop = proppatch_check_dav_prop(name);
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875 if(davprop != PG_DAV_DEADPROP) {
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876 if(davprop == PG_DAV_PROPPATCH_NOT_ALLOWED || davprop == forbidden_extra) {
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diff changeset
877 response->addproperty(response, property, 409);
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878 } else if(davprop == PG_DAV_CREATIONDATE) {
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879 result.creationdate = property;
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880 } else if(davprop == PG_DAV_DISPLAYNAME) {
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881 result.displayname = property;
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882 }
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883 webdav_plist_iterator_remove_current(&i);
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884 continue;
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885 }
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886 }
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887
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888 // call op func (set, remove specific code)
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889 if(opfunc(pgdav, request, response, property, op_userdata)) {
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890 result.error = 1;
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891 break;
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892 }
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893
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894 webdav_plist_iterator_remove_current(&i);
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895 }
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896
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897 return result;
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898 }
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899
377
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900 #define PG_PROPPATCH_EXT_SET 0
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901 #define PG_PROPPATCH_EXT_REMOVE 1
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902
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903 static int pg_proppatch_add_ext_prop(
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904 pool_handle_t *pool,
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905 PgWebdavBackend *pgdav,
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diff changeset
906 PgProppatch *proppatch,
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907 WebdavProperty *property,
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908 int proppatch_op)
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909 {
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diff changeset
910 UcxKey pkey = webdav_property_key((const char*)property->namespace->href, property->name);
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911 PgPropertyStoreExt *ext = ucx_map_get(pgdav->repository->prop_ext, pkey);
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diff changeset
912 free((void*)pkey.data);
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diff changeset
913 if(ext) {
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diff changeset
914 PgProppatchExtProp *ext_prop = pool_malloc(pool, sizeof(PgProppatchExtProp));
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diff changeset
915 if(!ext_prop) {
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916 return 1;
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diff changeset
917 }
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918 ext_prop->column = ext;
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919 ext_prop->property = property;
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920
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921 UcxAllocator a = util_pool_allocator(pool);
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diff changeset
922 proppatch->ext[ext->tableindex].isused = TRUE;
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923
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diff changeset
924 UcxList **list = proppatch_op == PG_PROPPATCH_EXT_REMOVE
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925 ? &proppatch->ext[ext->tableindex].remove
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926 : &proppatch->ext[ext->tableindex].set;
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diff changeset
927 *list = ucx_list_append_a(&a, *list, ext_prop);
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diff changeset
928
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929 proppatch->extensions_used = TRUE;
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930 }
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diff changeset
931
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diff changeset
932 return 0;
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933 }
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934
318
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935 static int pg_dav_set_property(
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936 PgWebdavBackend *pgdav,
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diff changeset
937 WebdavProppatchRequest *request,
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diff changeset
938 WebdavResource *response,
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939 WebdavProperty *property,
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940 void *userdata)
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941 {
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diff changeset
942 pool_handle_t *pool = request->sn->pool;
377
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
943 PgProppatch *proppatch = request->userdata;
318
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944 WSNamespace *ns = property->namespace;
377
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
945
c011bc2b3143 Add support for extended properties in pg proppatch
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946 // check if the property belongs to an extension
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
947 if(proppatch->ext && ns) {
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
948 return pg_proppatch_add_ext_prop(pool, pgdav, proppatch, property, PG_PROPPATCH_EXT_SET);
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
949 }
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
950
318
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951 char *resource_id_str = userdata;
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952 int ret = 0;
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953
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diff changeset
954 // convert the property value to WSXmlData
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diff changeset
955 // property->vtype == WS_VALUE_XML_NODE should always be true
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956 WSXmlData *property_value = property->vtype == WS_VALUE_XML_NODE ? wsxml_node2data(pool, property->value.node) : NULL;
324
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
957 char *value_str = NULL;
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
958 char *nsdef_str = NULL;
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diff changeset
959 if(property_value) {
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diff changeset
960 value_str = property_value->data;
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diff changeset
961 if(property_value->namespaces) {
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
962 nsdef_str = wsxml_nslist2string(pool, property_value->namespaces);
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
963 if(!nsdef_str) {
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diff changeset
964 return 1; // OOM
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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parents: 318
diff changeset
965 }
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
966 }
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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parents: 318
diff changeset
967 }
318
60870dbac94f add basic pg proppatch implementation
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diff changeset
968
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969 // exec sql
324
44cf877b3d9f add support for xml properties in propfind/proppatch requests (pg)
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diff changeset
970 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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diff changeset
971 PGresult *result = PQexecParams(
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diff changeset
972 pgdav->connection,
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diff changeset
973 sql_proppatch_set,
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diff changeset
974 7, // number of parameters
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diff changeset
975 NULL,
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diff changeset
976 params, // parameter value
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diff changeset
977 NULL,
60870dbac94f add basic pg proppatch implementation
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diff changeset
978 NULL,
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diff changeset
979 0); // 0: result in text format
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diff changeset
980
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diff changeset
981 if(PQresultStatus(result) != PGRES_COMMAND_OK) {
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diff changeset
982 response->addproperty(response, property, 500);
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diff changeset
983 //printf(PQerrorMessage(pgdav->connection));
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diff changeset
984 //fflush(stdout);
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985 ret = 1;
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diff changeset
986 } else {
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diff changeset
987 response->addproperty(response, property, 200);
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diff changeset
988 }
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diff changeset
989 PQclear(result);
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990 if(value_str) pool_free(pool, value_str);
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991
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992 return ret;
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993 }
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994
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995
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996 static int pg_dav_remove_property(
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997 PgWebdavBackend *pgdav,
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998 WebdavProppatchRequest *request,
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999 WebdavResource *response,
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1000 WebdavProperty *property,
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1001 void *userdata)
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1002 {
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1003 pool_handle_t *pool = request->sn->pool;
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1004 PgProppatch *proppatch = request->userdata;
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1005 WSNamespace *ns = property->namespace;
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1006
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1007 // check if the property belongs to an extension
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1008 if(proppatch->ext && ns) {
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1009 return pg_proppatch_add_ext_prop(pool, pgdav, proppatch, property, PG_PROPPATCH_EXT_REMOVE);
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1010 }
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1011
318
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1012 char *resource_id_str = userdata;
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1013 int ret = 0;
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1014
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1015 // exec sql
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1016 const char* params[3] = { resource_id_str, (const char*)ns->href, property->name };
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1017 PGresult *result = PQexecParams(
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1018 pgdav->connection,
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1019 sql_proppatch_remove,
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1020 3, // number of parameters
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1021 NULL,
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1022 params, // parameter value
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1023 NULL,
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1024 NULL,
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1025 0); // 0: result in text format
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1026
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1027 if(PQresultStatus(result) != PGRES_COMMAND_OK) {
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1028 response->addproperty(response, property, 500);
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1029 //printf(PQerrorMessage(pgdav->connection));
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1030 //fflush(stdout);
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1031 ret = 1;
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1032 }
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1033 PQclear(result);
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1034
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1035 return ret;
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1036 }
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1037
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1038
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1039 /*
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1040 * Creates an SQL query for inserting a new row to an extension table
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1041 * A parameter list for PQexecParams will also be generated, however
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1042 * params[0] will be empty (resource_id str)
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1043 *
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1044 * Query: insert into <table> (resource_id, col1, ...) values ($1, $2 ...);
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1045 */
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1046 static UcxBuffer* ext_row_create_insert_query(WebdavProppatchRequest *request, PgProppatchExt *ext, PgExtTable *table, char *** params, size_t *nparams) {
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1047 pool_handle_t *pool = request->sn->pool;
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1048
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1049 UcxBuffer *sql = ucx_buffer_new(NULL, 1024, UCX_BUFFER_AUTOEXTEND);
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1050 if(!sql) {
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1051 return NULL;
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1052 }
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1053
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1054 size_t pg_nparams = ucx_list_size(ext->set) + 1;
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1055 char** pg_params = pool_calloc(pool, pg_nparams, sizeof(char*));
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1056 if(!pg_params) {
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1057 ucx_buffer_free(sql);
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1058 return NULL;
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1059 }
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1060
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1061 ucx_buffer_puts(sql, "insert into ");
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1062 ucx_buffer_puts(sql, table->table);
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1063 ucx_buffer_puts(sql, "(resource_id");
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1064 UCX_FOREACH(elm, ext->set) {
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1065 PgProppatchExtProp *prop = elm->data;
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1066 ucx_bprintf(sql, ",%s", prop->column->name);
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1067 }
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1068
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1069 ucx_buffer_puts(sql, ") values ($1\n");
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1070 int i = 1;
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1071 UCX_FOREACH(elm, ext->set) {
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1072 PgProppatchExtProp *prop = elm->data;
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1073 WebdavProperty *property = prop->property;
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1074 // convert the property value to WSXmlData
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1075 // property->vtype == WS_VALUE_XML_NODE should always be true
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1076 WSXmlData *property_value = property->vtype == WS_VALUE_XML_NODE ? wsxml_node2data(pool, property->value.node) : NULL;
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1077 char *value_str = NULL;
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1078 //char *nsdef_str = NULL;
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1079 if(property_value) {
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1080 value_str = property_value->data;
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1081 if(property_value->namespaces) {
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1082 // currently only text data is supported
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1083 pool_free(pool, params);
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1084 ucx_buffer_free(sql);
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1085 return NULL;
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1086 }
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1087 }
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1088
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1089 pg_params[i] = value_str;
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1090 ucx_bprintf(sql, ",$%d", ++i);
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1091 }
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1092 ucx_buffer_puts(sql, ");");
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1093
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1094
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1095 //printf("\n\n%.*s\n\n", (int)sql->size, sql->space);
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1096 //fflush(stdout);
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1097
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1098 *params = pg_params;
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1099 *nparams = pg_nparams;
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1100
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1101 return sql;
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1102 }
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1103
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1104 /*
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1105 * Creates an SQL query for updating an extension table row
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1106 * A parameter list for PQexecParams will also be generated, however
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1107 * params[0] will be empty (resource_id str)
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1108 *
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1109 * Query: update <table> set
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1110 * col1 = $2,
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1111 * col2 = $3,
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1112 * ...
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1113 * where resource_id = $1 ;
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1114 */
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1115 static UcxBuffer* ext_row_create_update_query(WebdavProppatchRequest *request, PgProppatchExt *ext, PgExtTable *table, char *** params, size_t *nparams) {
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1116 pool_handle_t *pool = request->sn->pool;
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1117
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1118 UcxBuffer *sql = ucx_buffer_new(NULL, 1024, UCX_BUFFER_AUTOEXTEND);
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1119 if(!sql) {
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1120 return NULL;
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1121 }
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1122
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1123 ucx_buffer_puts(sql, "update ");
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1124 ucx_buffer_puts(sql, table->table);
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1125 ucx_buffer_puts(sql, " set\n");
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1126
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1127 size_t pg_nparams = ucx_list_size(ext->set) + 1;
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1128 char** pg_params = pool_calloc(pool, pg_nparams, sizeof(char*));
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1129 if(!pg_params) {
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1130 ucx_buffer_free(sql);
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diff changeset
1131 return NULL;
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diff changeset
1132 }
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diff changeset
1133
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diff changeset
1134 int i = 1;
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diff changeset
1135 UCX_FOREACH(elm, ext->set) {
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diff changeset
1136 PgProppatchExtProp *prop = elm->data;
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diff changeset
1137 WebdavProperty *property = prop->property;
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diff changeset
1138 // convert the property value to WSXmlData
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diff changeset
1139 // property->vtype == WS_VALUE_XML_NODE should always be true
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diff changeset
1140 WSXmlData *property_value = property->vtype == WS_VALUE_XML_NODE ? wsxml_node2data(pool, property->value.node) : NULL;
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diff changeset
1141 char *value_str = NULL;
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diff changeset
1142 //char *nsdef_str = NULL;
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diff changeset
1143 if(property_value) {
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diff changeset
1144 value_str = property_value->data;
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diff changeset
1145 if(property_value->namespaces) {
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diff changeset
1146 // currently only text data is supported
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diff changeset
1147 pool_free(pool, params);
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diff changeset
1148 ucx_buffer_free(sql);
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diff changeset
1149 return NULL;
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diff changeset
1150 }
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diff changeset
1151 }
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diff changeset
1152
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diff changeset
1153 pg_params[i] = value_str;
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diff changeset
1154 ucx_bprintf(sql, " %s = $%d,\n", prop->column->name, ++i);
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diff changeset
1155 }
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diff changeset
1156
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diff changeset
1157 UCX_FOREACH(elm, ext->remove) {
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diff changeset
1158 PgProppatchExtProp *prop = elm->data;
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diff changeset
1159 ucx_bprintf(sql, " %s = NULL,\n", prop->column->name);
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diff changeset
1160 }
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diff changeset
1161
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diff changeset
1162 // check if any write worked
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diff changeset
1163 if(sql->pos == 0) {
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diff changeset
1164 ucx_buffer_free(sql);
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diff changeset
1165 pool_free(pool, pg_params);
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diff changeset
1166 return NULL;
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diff changeset
1167 }
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diff changeset
1168
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diff changeset
1169 // last line should end with ',' '\n'
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diff changeset
1170 // replace ',' with space
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diff changeset
1171 if(sql->space[sql->pos-2] == ',') {
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diff changeset
1172 sql->space[sql->pos-2] = ' ';
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diff changeset
1173 }
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diff changeset
1174
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diff changeset
1175 ucx_bprintf(sql, "where resource_id = $1 ;\0");
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diff changeset
1176
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diff changeset
1177 //printf("\n\n%.*s\n\n", (int)sql->size, sql->space);
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diff changeset
1178 //fflush(stdout);
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diff changeset
1179
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diff changeset
1180 *params = pg_params;
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diff changeset
1181 *nparams = pg_nparams;
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diff changeset
1182
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diff changeset
1183 return sql;
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diff changeset
1184 }
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diff changeset
1185
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diff changeset
1186 /*
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diff changeset
1187 * Executes an SQL insert for the extension table
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diff changeset
1188 */
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diff changeset
1189 int ext_row_insert(WebdavProppatchRequest *request, PgProppatchExt *ext, PgExtTable *table) {
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diff changeset
1190 PgWebdavBackend *pgdav = request->dav->instance;
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diff changeset
1191 PgProppatch *proppatch = request->userdata;
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diff changeset
1192 pool_handle_t *pool = request->sn->pool;
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diff changeset
1193
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diff changeset
1194 char **params;
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diff changeset
1195 size_t nparam;
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diff changeset
1196 UcxBuffer *sql = ext_row_create_insert_query(request, ext, table, &params, &nparam);
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diff changeset
1197 if(!sql) {
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diff changeset
1198 return 1;
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diff changeset
1199 }
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diff changeset
1200
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diff changeset
1201 char resource_id_str[32];
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diff changeset
1202 snprintf(resource_id_str, 32, "%" PRId64, proppatch->resource_id);
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diff changeset
1203 params[0] = resource_id_str;
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diff changeset
1204
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diff changeset
1205 PGresult *result = PQexecParams(
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diff changeset
1206 pgdav->connection,
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diff changeset
1207 sql->space,
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diff changeset
1208 nparam, // number of parameters
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diff changeset
1209 NULL,
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diff changeset
1210 ( const char *const *)params, // parameter value
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diff changeset
1211 NULL,
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Olaf Wintermann <olaf.wintermann@gmail.com>
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diff changeset
1212 NULL,
c011bc2b3143 Add support for extended properties in pg proppatch
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 376
diff changeset
1213 0); // 0: result in text format
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diff changeset
1214
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diff changeset
1215 ucx_buffer_free(sql);
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parents: 376
diff changeset
1216
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diff changeset
1217 int ret = 1;
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parents: 376
diff changeset
1218 if(PQresultStatus(result) == PGRES_COMMAND_OK) {
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parents: 376
diff changeset
1219 // command ok, check if any row was updated
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parents: 376
diff changeset
1220 char *nrows_affected = PQcmdTuples(result);
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parents: 376
diff changeset
1221 if(nrows_affected[0] == '1') {
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parents: 376
diff changeset
1222 ret = 0;
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diff changeset
1223 } else {
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diff changeset
1224 log_ereport(LOG_FAILURE, "pg: extension row insert failed");
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diff changeset
1225 }
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diff changeset
1226 } else {
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diff changeset
1227 log_ereport(LOG_FAILURE, "pg: extension row insert failed: %s", PQresultErrorMessage(result));
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diff changeset
1228 }
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diff changeset
1229
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diff changeset
1230 PQclear(result);
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parents: 376
diff changeset
1231
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diff changeset
1232 return ret;
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parents: 376
diff changeset
1233 }
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1234
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diff changeset
1235 /*
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diff changeset
1236 * Executes an SQL update for the extension table
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diff changeset
1237 */
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diff changeset
1238 int ext_row_update(WebdavProppatchRequest *request, PgProppatchExt *ext, PgExtTable *table) {
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parents: 376
diff changeset
1239 PgWebdavBackend *pgdav = request->dav->instance;
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diff changeset
1240 PgProppatch *proppatch = request->userdata;
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diff changeset
1241 pool_handle_t *pool = request->sn->pool;
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diff changeset
1242
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diff changeset
1243 char **params;
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diff changeset
1244 size_t nparam;
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diff changeset
1245 UcxBuffer *sql = ext_row_create_update_query(request, ext, table, &params, &nparam);
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diff changeset
1246 if(!sql) {
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diff changeset
1247 return 1;
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parents: 376
diff changeset
1248 }
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1249
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diff changeset
1250 char resource_id_str[32];
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diff changeset
1251 snprintf(resource_id_str, 32, "%" PRId64, proppatch->resource_id);
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diff changeset
1252 params[0] = resource_id_str;
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diff changeset
1253
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diff changeset
1254 PGresult *result = PQexecParams(
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diff changeset
1255 pgdav->connection,
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diff changeset
1256 sql->space,
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parents: 376
diff changeset
1257 nparam, // number of parameters
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parents: 376
diff changeset
1258 NULL,
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parents: 376
diff changeset
1259 ( const char *const *)params, // parameter value
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parents: 376
diff changeset
1260 NULL,
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parents: 376
diff changeset
1261 NULL,
c011bc2b3143 Add support for extended properties in pg proppatch
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parents: 376
diff changeset
1262 0); // 0: result in text format
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diff changeset
1263
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diff changeset
1264 ucx_buffer_free(sql);
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diff changeset
1265
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diff changeset
1266 int ret = 1;
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diff changeset
1267 if(PQresultStatus(result) == PGRES_COMMAND_OK) {
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parents: 376
diff changeset
1268 // command ok, check if any row was updated
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diff changeset
1269 char *nrows_affected = PQcmdTuples(result);
378
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parents: 377
diff changeset
1270 if(nrows_affected[0] == '1') {
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diff changeset
1271 ret = 0;
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diff changeset
1272 } else if(nrows_affected[0] == '0') {
377
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parents: 376
diff changeset
1273 // no rows affected, that means we have to insert a new row
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diff changeset
1274 // in the extension table for this resource
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diff changeset
1275
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1276 // TODO: cleanup params
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1277
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1278 ret = ext_row_insert(request, ext, table);
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diff changeset
1279 }
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diff changeset
1280 } else {
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diff changeset
1281 log_ereport(LOG_FAILURE, "pg: extension row update failed: %s", PQresultErrorMessage(result));
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diff changeset
1282 }
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diff changeset
1283
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diff changeset
1284
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1285 PQclear(result);
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diff changeset
1286
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1287 return ret;
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diff changeset
1288 }
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diff changeset
1289
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diff changeset
1290 static int pg_dav_update_extension_tables(WebdavProppatchRequest *request) {
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1291 PgWebdavBackend *pgdav = request->dav->instance;
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diff changeset
1292 PgProppatch *proppatch = request->userdata;
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diff changeset
1293
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diff changeset
1294 for(int i=0;i<proppatch->numext;i++) {
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diff changeset
1295 if(proppatch->ext[i].isused) {
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diff changeset
1296 if(ext_row_update(request, &proppatch->ext[i], &pgdav->repository->tables[i])) {
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diff changeset
1297 // extension proppatch failed
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diff changeset
1298 return 1;
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diff changeset
1299 }
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diff changeset
1300 }
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diff changeset
1301 }
c011bc2b3143 Add support for extended properties in pg proppatch
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parents: 376
diff changeset
1302
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1303 return 0;
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diff changeset
1304 }
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1305
299
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1306 int pg_dav_proppatch_do(
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
1307 WebdavProppatchRequest *request,
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
1308 WebdavResource *response,
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
1309 VFSFile *file,
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
1310 WebdavPList **out_set,
f927ef81a12b add empty pg webdav funcs
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
1311 WebdavPList **out_remove)
f927ef81a12b add empty pg webdav funcs
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diff changeset
1312 {
318
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1313 PgWebdavBackend *pgdav = request->dav->instance;
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1314 pool_handle_t *pool = request->sn->pool;
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1315 char *path = pblock_findkeyval(pb_key_path, request->rq->vars);
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1316
377
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1317 PgProppatch proppatch;
378
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1318 proppatch.extensions_used = FALSE;
377
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1319 if(pgdav->repository->ntables == 0) {
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diff changeset
1320 proppatch.ext = NULL;
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diff changeset
1321 proppatch.numext = 0;
c011bc2b3143 Add support for extended properties in pg proppatch
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1322 } else {
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diff changeset
1323 // some properties are stored in additional tables
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1324 // for each table we create a PgProppatchExt record
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diff changeset
1325 // which stores data about, which tables are used
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diff changeset
1326 // and which properties (columns) should be updated
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1327 //
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1328 // proppatch.ext[i] should contain the data for repository->tables[i]
c011bc2b3143 Add support for extended properties in pg proppatch
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 376
diff changeset
1329 proppatch.numext = pgdav->repository->ntables;
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1330 proppatch.ext = pool_calloc(request->sn->pool, proppatch.numext, sizeof(PgProppatchExt));
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1331 if(!proppatch.ext) {
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1332 return 1; // OOM
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diff changeset
1333 }
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1334 }
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1335 request->userdata = &proppatch;
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1336
318
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diff changeset
1337 // check if the resource exists, we also need the resource_id
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diff changeset
1338 int64_t parent_id;
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diff changeset
1339 int64_t resource_id;
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diff changeset
1340 const char *resourcename;
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diff changeset
1341 WSBool iscollection;
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diff changeset
1342 int res_errno = 0;
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diff changeset
1343 int err = pg_resolve_path(
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1344 pgdav->connection,
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1345 path,
374
77506ec632a4 use configured root node from PgRepository in pg vfs/webdav
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diff changeset
1346 pgdav->root_resource_id_str,
318
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1347 &parent_id,
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diff changeset
1348 &resource_id,
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diff changeset
1349 NULL, // OID
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diff changeset
1350 &resourcename,
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diff changeset
1351 &iscollection,
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diff changeset
1352 NULL, // stat
346
784b24381bed extend postgresql vfs to store an etag in the file
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 331
diff changeset
1353 NULL, // etag
318
60870dbac94f add basic pg proppatch implementation
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diff changeset
1354 &res_errno);
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diff changeset
1355
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diff changeset
1356 if(err) {
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diff changeset
1357 return 1;
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diff changeset
1358 }
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diff changeset
1359
377
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diff changeset
1360 proppatch.resource_id = resource_id;
378
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diff changeset
1361
318
60870dbac94f add basic pg proppatch implementation
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diff changeset
1362 // because proppatch must be atomic and we have multiple sql
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diff changeset
1363 // queries and other backends that do stuff that could fail
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diff changeset
1364 // we need the possibility to reverse all changes
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diff changeset
1365 // we use a transaction savepoint for this
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diff changeset
1366 PGresult *result = PQexec(pgdav->connection, "savepoint proppatch;");
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diff changeset
1367 ExecStatusType execStatus = PQresultStatus(result);
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diff changeset
1368 PQclear(result);
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diff changeset
1369 if(execStatus != PGRES_COMMAND_OK) {
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diff changeset
1370 return 1;
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diff changeset
1371 }
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diff changeset
1372
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diff changeset
1373 char resource_id_str[32];
378
0344108db255 make original proppatch property list available to all backends
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parents: 377
diff changeset
1374 snprintf(resource_id_str, 32, "%" PRId64, resource_id);
0344108db255 make original proppatch property list available to all backends
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parents: 377
diff changeset
1375 // store the resource_id in rq->vars, because it could be useful later
0344108db255 make original proppatch property list available to all backends
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parents: 377
diff changeset
1376 pblock_nvinsert("resource_id", resource_id_str, request->rq->vars);
318
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diff changeset
1377
60870dbac94f add basic pg proppatch implementation
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diff changeset
1378 int ret = 0;
60870dbac94f add basic pg proppatch implementation
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diff changeset
1379 PgProppatchOpResult set_res = pg_proppatch_op(
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diff changeset
1380 pgdav,
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diff changeset
1381 request,
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diff changeset
1382 response,
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diff changeset
1383 out_set,
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diff changeset
1384 PG_DAV_PROPPATCH_NOT_ALLOWED,
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diff changeset
1385 pg_dav_set_property,
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diff changeset
1386 resource_id_str);
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diff changeset
1387 if(set_res.error) {
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diff changeset
1388 return 1;
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diff changeset
1389 }
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diff changeset
1390 PgProppatchOpResult rm_res = pg_proppatch_op(
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diff changeset
1391 pgdav,
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parents: 317
diff changeset
1392 request,
60870dbac94f add basic pg proppatch implementation
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parents: 317
diff changeset
1393 response,
60870dbac94f add basic pg proppatch implementation
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diff changeset
1394 out_remove,
60870dbac94f add basic pg proppatch implementation
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parents: 317
diff changeset
1395 PG_DAV_CREATIONDATE, // creationdate can't be removed
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diff changeset
1396 pg_dav_remove_property,
60870dbac94f add basic pg proppatch implementation
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diff changeset
1397 resource_id_str);
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diff changeset
1398 if(rm_res.error) {
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diff changeset
1399 return 1;
377
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1400 }
318
60870dbac94f add basic pg proppatch implementation
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diff changeset
1401
377
c011bc2b3143 Add support for extended properties in pg proppatch
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diff changeset
1402 // if extensions are in use and pg_proppatch_op found any
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diff changeset
1403 // properties, that should be stored in extension tables
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diff changeset
1404 // we do the update/insert now
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diff changeset
1405 if(proppatch.extensions_used) {
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diff changeset
1406 ret = pg_dav_update_extension_tables(request);
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diff changeset
1407 }
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diff changeset
1408
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diff changeset
1409
318
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1410 return ret;
299
f927ef81a12b add empty pg webdav funcs
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parents:
diff changeset
1411 }
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1412
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1413 int pg_dav_proppatch_finish(
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1414 WebdavProppatchRequest *request,
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1415 WebdavResource *response,
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1416 VFSFile *file,
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1417 WSBool commit)
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1418 {
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1419 PgWebdavBackend *pgdav = request->dav->instance;
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1420 int ret = 0;
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1421 if(!commit) {
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1422 log_ereport(LOG_VERBOSE, "proppatch: rollback");
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1423 PGresult *result = PQexec(pgdav->connection, "rollback to savepoint proppatch;");
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1424 if(PQresultStatus(result) != PGRES_COMMAND_OK) {
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1425 log_ereport(LOG_FAILURE, "pg_dav_proppatch_finish: rollback failed: %s", PQerrorMessage(pgdav->connection));
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1426 ret = 1;
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1427 }
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1428 PQclear(result);
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1429 }
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1430 return ret;
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1431 }

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