1/* 2 * inherited_props.c : ra_serf implementation of svn_ra_get_inherited_props 3 * 4 * ==================================================================== 5 * Licensed to the Apache Software Foundation (ASF) under one 6 * or more contributor license agreements. See the NOTICE file 7 * distributed with this work for additional information 8 * regarding copyright ownership. The ASF licenses this file 9 * to you under the Apache License, Version 2.0 (the 10 * "License"); you may not use this file except in compliance 11 * with the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, 16 * software distributed under the License is distributed on an 17 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 18 * KIND, either express or implied. See the License for the 19 * specific language governing permissions and limitations 20 * under the License. 21 * ==================================================================== 22 */ 23 24 25#include <apr_tables.h> 26#include <apr_xml.h> 27 28#include "svn_hash.h" 29#include "svn_path.h" 30#include "svn_ra.h" 31#include "svn_string.h" 32#include "svn_xml.h" 33#include "svn_props.h" 34#include "svn_base64.h" 35 36#include "private/svn_dav_protocol.h" 37#include "../libsvn_ra/ra_loader.h" 38#include "svn_private_config.h" 39#include "ra_serf.h" 40 41 42/* The current state of our XML parsing. */ 43typedef enum iprops_state_e { 44 INITIAL = 0, 45 IPROPS_REPORT, 46 IPROPS_ITEM, 47 IPROPS_PATH, 48 IPROPS_PROPNAME, 49 IPROPS_PROPVAL 50} iprops_state_e; 51 52/* Struct for accumulating inherited props. */ 53typedef struct iprops_context_t { 54 /* The depth-first ordered array of svn_prop_inherited_item_t * 55 structures we are building. */ 56 apr_array_header_t *iprops; 57 58 /* Pool in which to allocate elements of IPROPS. */ 59 apr_pool_t *pool; 60 61 /* The repository's root URL. */ 62 const char *repos_root_url; 63 64 /* Current property name */ 65 svn_stringbuf_t *curr_propname; 66 67 /* Current element in IPROPS. */ 68 svn_prop_inherited_item_t *curr_iprop; 69 70 /* Path we are finding inherited properties for. This is relative to 71 the RA session passed to svn_ra_serf__get_inherited_props. */ 72 const char *path; 73 /* The revision of PATH*/ 74 svn_revnum_t revision; 75} iprops_context_t; 76 77#define S_ SVN_XML_NAMESPACE 78static const svn_ra_serf__xml_transition_t iprops_table[] = { 79 { INITIAL, S_, SVN_DAV__INHERITED_PROPS_REPORT, IPROPS_REPORT, 80 FALSE, { NULL }, FALSE }, 81 82 { IPROPS_REPORT, S_, SVN_DAV__IPROP_ITEM, IPROPS_ITEM, 83 FALSE, { NULL }, TRUE }, 84 85 { IPROPS_ITEM, S_, SVN_DAV__IPROP_PATH, IPROPS_PATH, 86 TRUE, { NULL }, TRUE }, 87 88 { IPROPS_ITEM, S_, SVN_DAV__IPROP_PROPNAME, IPROPS_PROPNAME, 89 TRUE, { NULL }, TRUE }, 90 91 { IPROPS_ITEM, S_, SVN_DAV__IPROP_PROPVAL, IPROPS_PROPVAL, 92 TRUE, { "?V:encoding", NULL }, TRUE }, 93 94 { 0 } 95}; 96 97/* Conforms to svn_ra_serf__xml_opened_t */ 98static svn_error_t * 99iprops_opened(svn_ra_serf__xml_estate_t *xes, 100 void *baton, 101 int entered_state, 102 const svn_ra_serf__dav_props_t *tag, 103 apr_pool_t *scratch_pool) 104{ 105 iprops_context_t *iprops_ctx = baton; 106 107 if (entered_state == IPROPS_ITEM) 108 { 109 svn_stringbuf_setempty(iprops_ctx->curr_propname); 110 111 iprops_ctx->curr_iprop = apr_pcalloc(iprops_ctx->pool, 112 sizeof(*iprops_ctx->curr_iprop)); 113 114 iprops_ctx->curr_iprop->prop_hash = apr_hash_make(iprops_ctx->pool); 115 } 116 return SVN_NO_ERROR; 117} 118 119/* Conforms to svn_ra_serf__xml_closed_t */ 120static svn_error_t * 121iprops_closed(svn_ra_serf__xml_estate_t *xes, 122 void *baton, 123 int leaving_state, 124 const svn_string_t *cdata, 125 apr_hash_t *attrs, 126 apr_pool_t *scratch_pool) 127{ 128 iprops_context_t *iprops_ctx = baton; 129 130 if (leaving_state == IPROPS_ITEM) 131 { 132 APR_ARRAY_PUSH(iprops_ctx->iprops, svn_prop_inherited_item_t *) = 133 iprops_ctx->curr_iprop; 134 135 iprops_ctx->curr_iprop = NULL; 136 } 137 else if (leaving_state == IPROPS_PATH) 138 { 139 /* Every <iprop-item> has a single <iprop-path> */ 140 if (iprops_ctx->curr_iprop->path_or_url) 141 return svn_error_create(SVN_ERR_XML_MALFORMED, NULL, NULL); 142 143 iprops_ctx->curr_iprop->path_or_url = 144 svn_path_url_add_component2(iprops_ctx->repos_root_url, 145 cdata->data, 146 iprops_ctx->pool); 147 } 148 else if (leaving_state == IPROPS_PROPNAME) 149 { 150 if (iprops_ctx->curr_propname->len) 151 return svn_error_create(SVN_ERR_XML_MALFORMED, NULL, NULL); 152 153 /* Store propname for value */ 154 svn_stringbuf_set(iprops_ctx->curr_propname, cdata->data); 155 } 156 else if (leaving_state == IPROPS_PROPVAL) 157 { 158 const char *encoding; 159 const svn_string_t *val_str; 160 161 if (! iprops_ctx->curr_propname->len) 162 return svn_error_create(SVN_ERR_XML_MALFORMED, NULL, NULL); 163 164 encoding = svn_hash_gets(attrs, "V:encoding"); 165 166 if (encoding) 167 { 168 if (strcmp(encoding, "base64") != 0) 169 return svn_error_createf(SVN_ERR_XML_MALFORMED, 170 NULL, 171 _("Got unrecognized encoding '%s'"), 172 encoding); 173 174 /* Decode into the right pool. */ 175 val_str = svn_base64_decode_string(cdata, iprops_ctx->pool); 176 } 177 else 178 { 179 /* Copy into the right pool. */ 180 val_str = svn_string_dup(cdata, iprops_ctx->pool); 181 } 182 183 svn_hash_sets(iprops_ctx->curr_iprop->prop_hash, 184 apr_pstrdup(iprops_ctx->pool, 185 iprops_ctx->curr_propname->data), 186 val_str); 187 /* Clear current propname. */ 188 svn_stringbuf_setempty(iprops_ctx->curr_propname); 189 } 190 else 191 SVN_ERR_MALFUNCTION(); /* Invalid transition table */ 192 193 return SVN_NO_ERROR; 194} 195 196static svn_error_t * 197create_iprops_body(serf_bucket_t **bkt, 198 void *baton, 199 serf_bucket_alloc_t *alloc, 200 apr_pool_t *pool) 201{ 202 iprops_context_t *iprops_ctx = baton; 203 serf_bucket_t *body_bkt; 204 205 body_bkt = serf_bucket_aggregate_create(alloc); 206 207 svn_ra_serf__add_open_tag_buckets(body_bkt, alloc, 208 "S:" SVN_DAV__INHERITED_PROPS_REPORT, 209 "xmlns:S", SVN_XML_NAMESPACE, 210 NULL); 211 svn_ra_serf__add_tag_buckets(body_bkt, 212 "S:" SVN_DAV__REVISION, 213 apr_ltoa(pool, iprops_ctx->revision), 214 alloc); 215 svn_ra_serf__add_tag_buckets(body_bkt, "S:" SVN_DAV__PATH, 216 iprops_ctx->path, alloc); 217 svn_ra_serf__add_close_tag_buckets(body_bkt, alloc, 218 "S:" SVN_DAV__INHERITED_PROPS_REPORT); 219 *bkt = body_bkt; 220 return SVN_NO_ERROR; 221} 222 223/* Request a inherited-props-report from the URL attached to RA_SESSION, 224 and fill the IPROPS array hash with the results. */ 225svn_error_t * 226svn_ra_serf__get_inherited_props(svn_ra_session_t *ra_session, 227 apr_array_header_t **iprops, 228 const char *path, 229 svn_revnum_t revision, 230 apr_pool_t *result_pool, 231 apr_pool_t *scratch_pool) 232{ 233 svn_error_t *err; 234 iprops_context_t *iprops_ctx; 235 svn_ra_serf__session_t *session = ra_session->priv; 236 svn_ra_serf__handler_t *handler; 237 svn_ra_serf__xml_context_t *xmlctx; 238 const char *req_url; 239 240 SVN_ERR(svn_ra_serf__get_stable_url(&req_url, 241 NULL /* latest_revnum */, 242 session, 243 NULL /* conn */, 244 NULL /* url */, 245 revision, 246 result_pool, scratch_pool)); 247 248 SVN_ERR_ASSERT(session->repos_root_str); 249 250 iprops_ctx = apr_pcalloc(scratch_pool, sizeof(*iprops_ctx)); 251 iprops_ctx->repos_root_url = session->repos_root_str; 252 iprops_ctx->pool = result_pool; 253 iprops_ctx->curr_propname = svn_stringbuf_create_empty(scratch_pool); 254 iprops_ctx->curr_iprop = NULL; 255 iprops_ctx->iprops = apr_array_make(result_pool, 1, 256 sizeof(svn_prop_inherited_item_t *)); 257 iprops_ctx->path = path; 258 iprops_ctx->revision = revision; 259 260 xmlctx = svn_ra_serf__xml_context_create(iprops_table, 261 iprops_opened, iprops_closed, NULL, 262 iprops_ctx, 263 scratch_pool); 264 handler = svn_ra_serf__create_expat_handler(xmlctx, scratch_pool); 265 266 handler->method = "REPORT"; 267 handler->path = req_url; 268 handler->conn = session->conns[0]; 269 handler->session = session; 270 handler->body_delegate = create_iprops_body; 271 handler->body_delegate_baton = iprops_ctx; 272 handler->body_type = "text/xml"; 273 handler->handler_pool = scratch_pool; 274 275 err = svn_ra_serf__context_run_one(handler, scratch_pool); 276 SVN_ERR(svn_error_compose_create( 277 svn_ra_serf__error_on_status(handler->sline, 278 handler->path, 279 handler->location), 280 err)); 281 282 *iprops = iprops_ctx->iprops; 283 284 return SVN_NO_ERROR; 285} 286