source/carddav/carddav-serveretag.cpp

   1 // carddav-serveretag.cpp - CardDAV Object - Server ETag subroutines.
   2 //
   3 // (c) 2012-2015 Xestia Software Development.
   4 //
   5 // This file is part of Xestia Address Book.
   6 //
   7 // Xestia Address Book is free software: you can redistribute it and/or modify
   8 // it under the terms of the GNU General Public License as published by the
   9 // Free Software Foundation, version 3 of the license.
  10 //
  11 // Xestia Address Book is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with Xestia Address Book. If not, see <http://www.gnu.org/licenses/>
  18
  19 #include "carddav.h"
  20 #include "../version.h"
  21 #include <wx/wx.h>
  22 #include <wx/tokenzr.h>
  23 #include <wx/ffile.h>
  24 #include <libxml/parser.h>
  25 #include <libxml/tree.h>
  26 #include <map>
  27 #include <thread>
  28 #include "../vcard/vcard.h"
  29 #include "../common/dirs.h"
  30
  31 void CardDAV::GetServerETagValueThread()
  32 {
  33
  34         // Get the server etag value (threaded).
  35
  36         PageData.Clear();
  37         PageHeader.Clear();
  38
  39         SSLStatus = TRUE;
  40         AuthPassed = TRUE;
  41         AbortConnection = FALSE;
  42
  43         bool FilenameIsDirectory = FALSE;
  44         CURL *conn;
  45         CURLcode conncode;
  46         wxString ServerAddressURL;
  47         wxString ServerAuth;
  48         wxString ServerAddressSSL;
  49         wxString ServerAddressNormal;
  50
  51         conn = curl_easy_init();
  52
  53         struct CardDAVCURLPasser {
  54
  55                 CardDAV *Data;
  56                 bool HeaderMode = TRUE;
  57
  58         } CardDAVHeader, CardDAVFooter;
  59
  60         CardDAVHeader.Data = this;
  61         CardDAVHeader.HeaderMode = TRUE;
  62
  63         CardDAVFooter.Data = this;
  64         CardDAVFooter.HeaderMode = FALSE;
  65
  66         wxString Data1;
  67         wxString Data2;
  68
  69         ServerAddressURL = ServerAddress + wxT(":") + wxString::Format(wxT("%i"), ServerPort) + wxT("/") + ServerPrefix + ServerFilenameLocation;
  70         ServerAddressSSL = wxT("https://") + ServerAddressURL;
  71         ServerAddressNormal = wxT("http://") + ServerAddressURL;
  72
  73         ServerAuth = ServerUser + wxT(":") + ServerPass;
  74
  75         std::map<int,int>::iterator ActIter;
  76         struct UploadDataStruc UploadData;
  77
  78
  79         ActIter = ActivityListPtr->find((int)ItemIndex);
  80
  81         static const char* query =
  82         "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
  83         "<C:addressbook-query xmlns:D=\"DAV:\""
  84         "       xmlns:C=\"urn:ietf:params:xml:ns:carddav\">"
  85         "<D:prop><D:getetag/>"
  86         "</D:prop>"
  87         "<C:filter/>"
  88         "</C:addressbook-query>";
  89
  90         if (ServerSSL){
  91
  92                 wxString ServerCertFilename;
  93                 bool MatchingCert = FALSE;
  94
  95                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressSSL.mb_str(wxConvUTF8));
  96                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 0);
  97                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
  98                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
  99                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 100                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 101                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 102                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 103                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 104                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 105                 curl_easy_setopt(conn, CURLOPT_PROGRESSDATA, this);
 106                 curl_easy_setopt(conn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 107                 curl_easy_setopt(conn, CURLOPT_CUSTOMREQUEST, "REPORT");
 108                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 109                 curl_easy_setopt(conn, CURLOPT_POSTFIELDS, query);
 110                 curl_easy_setopt(conn, CURLOPT_POSTFIELDSIZE, strlen(query));
 111
 112                 ServerCertFilename = GetAccountDir(ServerAccount, TRUE);
 113
 114                 if (wxFile::Exists(ServerCertFilename) == TRUE){
 115
 116                         curl_easy_setopt(conn, CURLOPT_SSL_VERIFYPEER, 1);
 117                         curl_easy_setopt(conn, CURLOPT_SSL_VERIFYHOST, 2);
 118                         curl_easy_setopt(conn, CURLOPT_CAINFO, (const char*)ServerCertFilename.mb_str(wxConvUTF8));
 119
 120                 }
 121
 122                 claconncode = (curl_easy_perform(conn));
 123
 124                 // If CURLE_PEER_FAILED_VERIFICATION is returned, retry without
 125                 // the local certificate in use.
 126
 127                 if (claconncode == CURLE_PEER_FAILED_VERIFICATION){
 128
 129                         curl_easy_cleanup(conn);
 130                         conn = curl_easy_init();
 131
 132                         curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressSSL.mb_str(wxConvUTF8));
 133                         curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 0);
 134                         curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 135                         curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 136                         curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 137                         curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 138                         curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 139                         curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 140                         curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 141                         curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 142                         curl_easy_setopt(conn, CURLOPT_PROGRESSDATA, this);
 143                         curl_easy_setopt(conn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 144                         curl_easy_setopt(conn, CURLOPT_CUSTOMREQUEST, "REPORT");
 145                         curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 146                         curl_easy_setopt(conn, CURLOPT_POSTFIELDS, query);
 147                         curl_easy_setopt(conn, CURLOPT_POSTFIELDSIZE, strlen(query));
 148
 149                         claconncode = (curl_easy_perform(conn));
 150
 151                         // If claconncode is CURLE_OK then delete the certificate file as that
 152                         // is no longer needed.
 153
 154                         if (claconncode == CURLE_OK){
 155
 156                                 // Delete the certificate file.
 157
 158                                 wxRemoveFile(ServerCertFilename);
 159
 160                         }
 161
 162                 }
 163
 164                 // Check if it fails with a CURLE_SSL_CACERT then compare
 165                 // the certificates as PEM files.
 166
 167                 if (claconncode == CURLE_SSL_CACERT && wxFile::Exists(ServerCertFilename) == TRUE){
 168
 169                         CURL *sslerrconn;
 170                         sslerrconn = curl_easy_init();
 171                         CURLcode sslerrconncode;
 172
 173                         wxString ServerAddressOnly = wxT("https://") + ServerAddress + wxT(":") + wxString::Format(wxT("%i"), ServerPort) + wxT("/");
 174
 175                         PageData.clear();
 176                         PageHeader.clear();
 177
 178                         curl_easy_setopt(sslerrconn, CURLOPT_URL, (const char*)ServerAddressOnly.mb_str(wxConvUTF8));
 179                         curl_easy_setopt(sslerrconn, CURLOPT_NOPROGRESS, 0);
 180                         curl_easy_setopt(sslerrconn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 181                         curl_easy_setopt(sslerrconn, CURLOPT_TIMEOUT, 60);
 182                         curl_easy_setopt(sslerrconn, CURLOPT_FAILONERROR, TRUE);
 183                         curl_easy_setopt(sslerrconn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 184                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 185                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEDATA, &PageData);
 186                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEHEADER, &PageHeader);
 187                         curl_easy_setopt(sslerrconn, CURLOPT_PROGRESSDATA, this);
 188                         curl_easy_setopt(sslerrconn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 189                         curl_easy_setopt(sslerrconn, CURLOPT_NOSIGNAL, 1);
 190                         curl_easy_setopt(sslerrconn, CURLOPT_SSL_VERIFYPEER, 0);
 191                         curl_easy_setopt(sslerrconn, CURLOPT_CERTINFO, 1);
 192                         curl_easy_setopt(sslerrconn, CURLOPT_SSL_VERIFYPEER, 1);
 193                         curl_easy_setopt(sslerrconn, CURLOPT_SSL_VERIFYHOST, 2);
 194                         curl_easy_setopt(sslerrconn, CURLOPT_CAINFO, (const char*)ServerCertFilename.mb_str(wxConvUTF8));
 195
 196                         wxString SSLLocalData;
 197                         wxString SSLServerData;
 198
 199                         sslerrconncode = (curl_easy_perform(sslerrconn));
 200
 201                         SSLCertCol = BuildSSLCollection(sslerrconn);
 202                         std::map<int, SSLCertData>::iterator SSLCDIter = SSLCertCol.SSLCollection.find(0);
 203                         std::multimap<wxString,wxString>::iterator SSLDataIter = SSLCDIter->second.CertData.find(wxT("Cert"));
 204
 205                         wxFFile SSLLocalFile;
 206
 207 #if wxABI_VERSION < 20900
 208                         SSLLocalFile.Open(ServerCertFilename.c_str(), wxT("r"));
 209 #else
 210                         SSLLocalFile.Open(ServerCertFilename, wxT("r"));
 211 #endif
 212
 213                         // Load the recovery database for tasks not done.
 214
 215                         if (SSLLocalFile.IsOpened() == TRUE){
 216
 217                         // Check if we are using wxWidgets version 2.8 or less and
 218                         // execute the required command accordingly.
 219
 220                                 SSLLocalFile.ReadAll(&SSLLocalData, wxConvAuto());
 221
 222
 223                         }
 224
 225                         SSLServerData = SSLDataIter->second;
 226
 227                         if (SSLLocalData == SSLServerData){
 228
 229                                 // Server key matches with local key so retry with CURLOPT_SSL_VERIFYPEER
 230                                 // and CURLOPT_SSL_VERIFYHOST off.
 231
 232                                 curl_easy_cleanup(conn);
 233                                 conn = curl_easy_init();
 234
 235                                 PageData.clear();
 236                                 PageHeader.clear();
 237
 238                                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressSSL.mb_str(wxConvUTF8));
 239                                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 0);
 240                                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 241                                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 242                                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 243                                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 244                                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 245                                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 246                                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 247                                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 248                                 curl_easy_setopt(conn, CURLOPT_PROGRESSDATA, this);
 249                                 curl_easy_setopt(conn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 250                                 curl_easy_setopt(conn, CURLOPT_CUSTOMREQUEST, "REPORT");
 251                                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 252                                 curl_easy_setopt(conn, CURLOPT_POSTFIELDS, query);
 253                                 curl_easy_setopt(conn, CURLOPT_POSTFIELDSIZE, strlen(query));
 254                                 curl_easy_setopt(conn, CURLOPT_SSL_VERIFYPEER, 0);
 255                                 curl_easy_setopt(conn, CURLOPT_SSL_VERIFYHOST, 0);
 256
 257                                 claconncode = (curl_easy_perform(conn));
 258
 259                                 MatchingCert = TRUE;
 260
 261                         }
 262
 263                         if (MatchingCert == FALSE){
 264
 265                                 claconncode = CURLE_SSL_CACERT;
 266                                 return;
 267
 268                         }
 269
 270                         curl_easy_cleanup(sslerrconn);
 271
 272                 }
 273
 274                 // Sort out SSL error.
 275
 276                 // When SSL cert error occurs, connect again and fetch certificates.
 277                 // Display a message to the user explaining that an invalid
 278                 // certificate has been given and let the user decide what
 279                 // to do next.
 280
 281                 if (claconncode == CURLE_OK){
 282
 283                 } else if (claconncode == CURLE_SSL_CACERT || claconncode == CURLE_PEER_FAILED_VERIFICATION){
 284
 285                         CURL *sslerrconn;
 286                         sslerrconn = curl_easy_init();
 287                         CURLcode sslerrconncode;
 288
 289                         wxString ServerAddressOnly = wxT("https://") + ServerAddress + wxT(":") + wxString::Format(wxT("%i"), ServerPort) + wxT("/");
 290
 291                         // Replace conn with sslerrconn!
 292
 293                         curl_easy_setopt(sslerrconn, CURLOPT_URL, (const char*)ServerAddressOnly.mb_str(wxConvUTF8));
 294                         curl_easy_setopt(sslerrconn, CURLOPT_NOPROGRESS, 0);
 295                         curl_easy_setopt(sslerrconn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 296                         curl_easy_setopt(sslerrconn, CURLOPT_TIMEOUT, 60);
 297                         curl_easy_setopt(sslerrconn, CURLOPT_FAILONERROR, TRUE);
 298                         curl_easy_setopt(sslerrconn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 299                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 300                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEDATA, &PageData);
 301                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEHEADER, &PageHeader);
 302                         curl_easy_setopt(sslerrconn, CURLOPT_PROGRESSDATA, this);
 303                         curl_easy_setopt(sslerrconn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 304                         curl_easy_setopt(sslerrconn, CURLOPT_NOSIGNAL, 1);
 305                         curl_easy_setopt(sslerrconn, CURLOPT_SSL_VERIFYPEER, 0);
 306                         curl_easy_setopt(sslerrconn, CURLOPT_CERTINFO, 1);
 307
 308                         sslerrconncode = (curl_easy_perform(sslerrconn));
 309
 310                         SSLCertCol = BuildSSLCollection(sslerrconn);
 311                         SSLCertCol.SuccessCode = 1;
 312
 313                         curl_easy_cleanup(conn);
 314                         curl_easy_cleanup(sslerrconn);
 315
 316                         return;
 317
 318                 } else if (claconncode == CURLE_HTTP_RETURNED_ERROR){
 319
 320                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 321                                         curl_easy_strerror(claconncode));
 322                         int http_code = 0;
 323                         curl_easy_getinfo(conn, CURLINFO_RESPONSE_CODE, &http_code);
 324                         fprintf(stderr, "Error code was: %d\n", http_code);
 325
 326                         curl_easy_cleanup(conn);
 327
 328                         return;
 329
 330                 } else {
 331
 332                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 333                                         curl_easy_strerror(claconncode));
 334                         int http_code = 0;
 335                         curl_easy_getinfo(conn, CURLINFO_RESPONSE_CODE, &http_code);
 336                         fprintf(stderr, "Error code was: %d\n", http_code);
 337
 338                         curl_easy_cleanup(conn);
 339
 340                         return;
 341
 342                 }
 343
 344         } else {
 345
 346                 // No SSL.
 347
 348                 wxString EmptyString;
 349
 350                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressNormal.mb_str(wxConvUTF8));
 351                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 0);
 352                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 353                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 354                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 355                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 356                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 357                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 358                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 359                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 360                 curl_easy_setopt(conn, CURLOPT_PROGRESSDATA, this);
 361                 curl_easy_setopt(conn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 362                 curl_easy_setopt(conn, CURLOPT_CUSTOMREQUEST, "REPORT");
 363                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 364                 curl_easy_setopt(conn, CURLOPT_POSTFIELDS, query);
 365                 curl_easy_setopt(conn, CURLOPT_POSTFIELDSIZE, strlen(query));
 366
 367                 PageData.Clear();
 368                 PageHeader.Clear();
 369
 370                 conncode = (curl_easy_perform(conn));
 371
 372                 if (conncode == CURLE_OK){
 373
 374                 } else if (conncode == CURLE_HTTP_RETURNED_ERROR){
 375
 376                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 377                                         curl_easy_strerror(conncode));
 378
 379                         return;
 380
 381                 } else {
 382
 383                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 384                                         curl_easy_strerror(conncode));
 385
 386                         return;
 387
 388                 }
 389
 390         }
 391
 392         xmlDocPtr xmlCardDAVDoc;
 393
 394         xmlCardDAVDoc = xmlReadMemory(PageData.mb_str(wxConvUTF8), (int)PageData.Len(), "noname.xml", NULL, 0);
 395
 396         xmlNodePtr nodeLevel1;
 397         xmlNodePtr nodeLevel2;
 398         xmlNodePtr nodeLevel3;
 399         xmlNodePtr nodeLevel4;
 400         xmlNodePtr nodeLevel5;
 401         xmlNodePtr nodeLevel6;
 402
 403         std::map<wxString,wxString> xmlDataMap;
 404
 405         wxString DataFilename;
 406         wxString ETagData;
 407
 408         std::string xmlStringSafe;
 409
 410         // Tranverse through the catacombs of the response to get our ETag for the file.
 411
 412         for (nodeLevel1 = xmlCardDAVDoc->children;
 413                 nodeLevel1 != NULL;
 414                 nodeLevel1 = nodeLevel1->next)
 415         {
 416
 417                 bool HREFFound = FALSE;
 418                 bool ETagFound = FALSE;
 419
 420                 for (nodeLevel2 = nodeLevel1->children;
 421                         nodeLevel2 != NULL;
 422                         nodeLevel2 = nodeLevel2->next)
 423                 {
 424
 425                         for (nodeLevel3 = nodeLevel2->children;
 426                         nodeLevel3 != NULL;
 427                         nodeLevel3 = nodeLevel3->next)
 428                         {
 429
 430                                 if (!xmlStrcmp(nodeLevel3->name, (const xmlChar *)"href") ||
 431                                 !xmlStrcmp(nodeLevel3->name, (const xmlChar *)"d:href") ||
 432                                 !xmlStrcmp(nodeLevel3->name, (const xmlChar *)"D:href")
 433                                 ){
 434
 435                                         // Get the filename.
 436
 437                                         for (nodeLevel4 = nodeLevel3->children;
 438                                         nodeLevel4 != NULL;
 439                                         nodeLevel4 = nodeLevel4->next)
 440                                         {
 441
 442                                                 if (!xmlStrcmp(nodeLevel4->name, (const xmlChar *)"text") ||
 443                                                 !xmlStrcmp(nodeLevel4->name, (const xmlChar *)"d:text") ||
 444                                                 !xmlStrcmp(nodeLevel4->name, (const xmlChar *)"D:text")
 445                                                 ){
 446
 447                                                         DataFilename = wxString::FromUTF8((const char*)nodeLevel4->content);
 448                                                         wxStringTokenizer wSTDFilename(DataFilename, wxT("/"));
 449
 450                                                         while (wSTDFilename.HasMoreTokens()){
 451
 452                                                                 DataFilename = wSTDFilename.GetNextToken();
 453
 454                                                         }
 455
 456                                                         HREFFound = TRUE;
 457
 458                                                 }
 459
 460
 461
 462                                         }
 463
 464                                 } else {
 465
 466                                         for (nodeLevel4 = nodeLevel3->children;
 467                                         nodeLevel4 != NULL;
 468                                         nodeLevel4 = nodeLevel4->next)
 469                                         {
 470
 471                                                         for (nodeLevel5 = nodeLevel4->children;
 472                                                         nodeLevel5 != NULL;
 473                                                         nodeLevel5 = nodeLevel5->next)
 474                                                         {
 475
 476                                                                 if (!xmlStrcmp(nodeLevel5->name, (const xmlChar *)"getetag") ||
 477                                                                 !xmlStrcmp(nodeLevel5->name, (const xmlChar *)"d:getetag") ||
 478                                                                 !xmlStrcmp(nodeLevel5->name, (const xmlChar *)"D:getetag")
 479                                                                 ){
 480
 481                                                                         for (nodeLevel6 = nodeLevel5->children;
 482                                                                         nodeLevel6 != NULL;
 483                                                                         nodeLevel6 = nodeLevel6->next)
 484                                                                         {
 485
 486                                                                                 // Strip the quotes from the ETag.
 487
 488                                                                                 ETagData = wxString::FromUTF8((const char*)nodeLevel6->content);
 489                                                                                 if (ETagData.Mid(0, 1) == wxT("\"") && ETagData.Mid((ETagData.Len() - 1), 1) == wxT("\"")){
 490
 491                                                                                         ETagData.Remove(0, 1);
 492                                                                                         ETagData.RemoveLast();
 493
 494                                                                                 }
 495
 496                                                                                 ETagFound = TRUE;
 497
 498                                                                         }
 499
 500                                                                 }
 501
 502                                                         }
 503
 504                                         }
 505
 506                                 }
 507
 508                         }
 509
 510                 }
 511
 512                 if (HREFFound == TRUE && ETagFound == TRUE){
 513
 514                         // Add to the map data.
 515
 516                         xmlDataMap.insert(std::make_pair(DataFilename, ETagData));
 517
 518                         HREFFound = FALSE;
 519                         ETagFound = FALSE;
 520
 521                 }
 522
 523
 524         }
 525
 526         xmlFreeDoc(xmlCardDAVDoc);
 527
 528         // Get the first result.
 529
 530         for (std::map<wxString,wxString>::iterator iter = xmlDataMap.begin();
 531                 iter != xmlDataMap.end(); ++iter){
 532
 533                 ETagResult = iter->second;
 534                 break;
 535
 536         }
 537
 538         if (ETagResult.IsEmpty()){
 539
 540                 return;
 541
 542         }
 543
 544         return;
 545
 546 }
 547
 548 void CardDAV::GetServerETagValue(){
 549
 550         // Get the server etag value.
 551
 552         std::thread ConnectThread(&CardDAV::GetServerETagValueThread, this);
 553         ConnectThread.detach();
 554
 555 }