contrib/subversion/subversion/libsvn_ra_serf/mergeinfo.c

   1 /*
   2  * mergeinfo.c : entry point for mergeinfo RA functions for ra_serf
   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 #include <apr_tables.h>
  25 #include <apr_xml.h>
  26
  27 #include "svn_hash.h"
  28 #include "svn_mergeinfo.h"
  29 #include "svn_path.h"
  30 #include "svn_ra.h"
  31 #include "svn_string.h"
  32 #include "svn_xml.h"
  33
  34 #include "private/svn_dav_protocol.h"
  35 #include "../libsvn_ra/ra_loader.h"
  36 #include "svn_private_config.h"
  37 #include "ra_serf.h"
  38
  39
  40 \f
  41
  42 /* The current state of our XML parsing. */
  43 typedef enum mergeinfo_state_e {
  44   INITIAL = 0,
  45   MERGEINFO_REPORT,
  46   MERGEINFO_ITEM,
  47   MERGEINFO_PATH,
  48   MERGEINFO_INFO
  49 } mergeinfo_state_e;
  50
  51 /* Baton for accumulating mergeinfo.  RESULT_CATALOG stores the final
  52    mergeinfo catalog result we are going to hand back to the caller of
  53    get_mergeinfo.  */
  54 typedef struct mergeinfo_context_t {
  55   apr_pool_t *pool;
  56   svn_mergeinfo_t result_catalog;
  57   const apr_array_header_t *paths;
  58   svn_revnum_t revision;
  59   svn_mergeinfo_inheritance_t inherit;
  60   svn_boolean_t include_descendants;
  61 } mergeinfo_context_t;
  62
  63
  64 #define D_ "DAV:"
  65 #define S_ SVN_XML_NAMESPACE
  66 static const svn_ra_serf__xml_transition_t mergeinfo_ttable[] = {
  67   { INITIAL, S_, SVN_DAV__MERGEINFO_REPORT, MERGEINFO_REPORT,
  68     FALSE, { NULL }, FALSE },
  69
  70   { MERGEINFO_REPORT, S_, SVN_DAV__MERGEINFO_ITEM, MERGEINFO_ITEM,
  71     FALSE, { NULL }, TRUE },
  72
  73   { MERGEINFO_ITEM, S_, SVN_DAV__MERGEINFO_PATH, MERGEINFO_PATH,
  74     TRUE, { NULL }, TRUE },
  75
  76   { MERGEINFO_ITEM, S_, SVN_DAV__MERGEINFO_INFO, MERGEINFO_INFO,
  77     TRUE, { NULL }, TRUE },
  78
  79   { 0 }
  80 };
  81
  82
  83 /* Conforms to svn_ra_serf__xml_closed_t  */
  84 static svn_error_t *
  85 mergeinfo_closed(svn_ra_serf__xml_estate_t *xes,
  86                  void *baton,
  87                  int leaving_state,
  88                  const svn_string_t *cdata,
  89                  apr_hash_t *attrs,
  90                  apr_pool_t *scratch_pool)
  91 {
  92   mergeinfo_context_t *mergeinfo_ctx = baton;
  93
  94   if (leaving_state == MERGEINFO_ITEM)
  95     {
  96       /* Placed here from the child elements.  */
  97       const char *path = svn_hash_gets(attrs, "path");
  98       const char *info = svn_hash_gets(attrs, "info");
  99
 100       if (path != NULL && info != NULL)
 101         {
 102           svn_mergeinfo_t path_mergeinfo;
 103
 104           /* Correct for naughty servers that send "relative" paths
 105              with leading slashes! */
 106           if (path[0] == '/')
 107             ++path;
 108
 109           SVN_ERR(svn_mergeinfo_parse(&path_mergeinfo, info,
 110                                       mergeinfo_ctx->pool));
 111
 112           svn_hash_sets(mergeinfo_ctx->result_catalog,
 113                         apr_pstrdup(mergeinfo_ctx->pool, path),
 114                         path_mergeinfo);
 115         }
 116     }
 117   else
 118     {
 119       SVN_ERR_ASSERT(leaving_state == MERGEINFO_PATH
 120                      || leaving_state == MERGEINFO_INFO);
 121
 122       /* Stash the value onto the parent MERGEINFO_ITEM.  */
 123       svn_ra_serf__xml_note(xes, MERGEINFO_ITEM,
 124                             leaving_state == MERGEINFO_PATH
 125                               ? "path"
 126                               : "info",
 127                             cdata->data);
 128     }
 129
 130   return SVN_NO_ERROR;
 131 }
 132
 133
 134 static svn_error_t *
 135 create_mergeinfo_body(serf_bucket_t **bkt,
 136                       void *baton,
 137                       serf_bucket_alloc_t *alloc,
 138                       apr_pool_t *pool)
 139 {
 140   mergeinfo_context_t *mergeinfo_ctx = baton;
 141   serf_bucket_t *body_bkt;
 142
 143   body_bkt = serf_bucket_aggregate_create(alloc);
 144
 145   svn_ra_serf__add_open_tag_buckets(body_bkt, alloc,
 146                                     "S:" SVN_DAV__MERGEINFO_REPORT,
 147                                     "xmlns:S", SVN_XML_NAMESPACE,
 148                                     NULL);
 149
 150   svn_ra_serf__add_tag_buckets(body_bkt,
 151                                "S:" SVN_DAV__REVISION,
 152                                apr_ltoa(pool, mergeinfo_ctx->revision),
 153                                alloc);
 154   svn_ra_serf__add_tag_buckets(body_bkt, "S:" SVN_DAV__INHERIT,
 155                                svn_inheritance_to_word(mergeinfo_ctx->inherit),
 156                                alloc);
 157   if (mergeinfo_ctx->include_descendants)
 158     {
 159       svn_ra_serf__add_tag_buckets(body_bkt, "S:"
 160                                    SVN_DAV__INCLUDE_DESCENDANTS,
 161                                    "yes", alloc);
 162     }
 163
 164   if (mergeinfo_ctx->paths)
 165     {
 166       int i;
 167
 168       for (i = 0; i < mergeinfo_ctx->paths->nelts; i++)
 169         {
 170           const char *this_path = APR_ARRAY_IDX(mergeinfo_ctx->paths,
 171                                                 i, const char *);
 172
 173           svn_ra_serf__add_tag_buckets(body_bkt, "S:" SVN_DAV__PATH,
 174                                        this_path, alloc);
 175         }
 176     }
 177
 178   svn_ra_serf__add_close_tag_buckets(body_bkt, alloc,
 179                                      "S:" SVN_DAV__MERGEINFO_REPORT);
 180
 181   *bkt = body_bkt;
 182   return SVN_NO_ERROR;
 183 }
 184
 185 svn_error_t *
 186 svn_ra_serf__get_mergeinfo(svn_ra_session_t *ra_session,
 187                            svn_mergeinfo_catalog_t *catalog,
 188                            const apr_array_header_t *paths,
 189                            svn_revnum_t revision,
 190                            svn_mergeinfo_inheritance_t inherit,
 191                            svn_boolean_t include_descendants,
 192                            apr_pool_t *pool)
 193 {
 194   svn_error_t *err;
 195   mergeinfo_context_t *mergeinfo_ctx;
 196   svn_ra_serf__session_t *session = ra_session->priv;
 197   svn_ra_serf__handler_t *handler;
 198   svn_ra_serf__xml_context_t *xmlctx;
 199   const char *path;
 200
 201   *catalog = NULL;
 202
 203   SVN_ERR(svn_ra_serf__get_stable_url(&path, NULL /* latest_revnum */,
 204                                       session, NULL /* conn */,
 205                                       NULL /* url */, revision,
 206                                       pool, pool));
 207
 208   mergeinfo_ctx = apr_pcalloc(pool, sizeof(*mergeinfo_ctx));
 209   mergeinfo_ctx->pool = pool;
 210   mergeinfo_ctx->result_catalog = apr_hash_make(pool);
 211   mergeinfo_ctx->paths = paths;
 212   mergeinfo_ctx->revision = revision;
 213   mergeinfo_ctx->inherit = inherit;
 214   mergeinfo_ctx->include_descendants = include_descendants;
 215
 216   xmlctx = svn_ra_serf__xml_context_create(mergeinfo_ttable,
 217                                            NULL, mergeinfo_closed, NULL,
 218                                            mergeinfo_ctx,
 219                                            pool);
 220   handler = svn_ra_serf__create_expat_handler(xmlctx, pool);
 221
 222   handler->method = "REPORT";
 223   handler->path = path;
 224   handler->conn = session->conns[0];
 225   handler->session = session;
 226   handler->body_delegate = create_mergeinfo_body;
 227   handler->body_delegate_baton = mergeinfo_ctx;
 228   handler->body_type = "text/xml";
 229
 230   err = svn_ra_serf__context_run_one(handler, pool);
 231
 232   SVN_ERR(svn_error_compose_create(
 233                 svn_ra_serf__error_on_status(handler->sline, handler->path,
 234                                              handler->location),
 235                 err));
 236
 237   if (handler->done && apr_hash_count(mergeinfo_ctx->result_catalog))
 238     *catalog = mergeinfo_ctx->result_catalog;
 239
 240   return SVN_NO_ERROR;
 241 }