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         // Workout if path is directory or filename.
  76
  77         /*if (ServerAddress){
  78                 FilenameIsDirectory = TRUE;
  79         } else {
  80                 FilenameIsDirectory = FALSE;
  81         }*/
  82
  83         // Try SSL first.
  84
  85
  86         /*
  87         char *ServerAdrSSLChar = new char[(ServerAddressSSL.Length() - 1)];
  88         //memset(ServerAdrSSLChar, 0, ServerAddressSSL.Length());
  89         strncpy(ServerAdrSSLChar, (const char*)ServerAddressSSL.mb_str(wxConvUTF8), (ServerAddressSSL.Length() - 1));
  90
  91         char *ServerAdrNorChar = new char[(ServerAddressNormal.Length() - 1)];
  92         //memset(ServerAdrNorChar, 0, ServerAddressSSL.Length());
  93         strncpy(ServerAdrNorChar, (const char*)ServerAddressNormal.mb_str(wxConvUTF8), (ServerAddressNormal.Length() - 1));
  94
  95         char *ServerAuthChar = new char[(ServerAuth.Length() - 1)];
  96         //memset(ServerAuthChar, 0, ServerAddressSSL.Length());
  97         strncpy(ServerAuthChar, (const char*)ServerAuth.mb_str(wxConvUTF8), (ServerAuth.Length() - 1));
  98
  99         */
 100
 101         //std::string WriteDataString = std::string(ServerUploadData.mb_str());
 102
 103         std::map<int,int>::iterator ActIter;
 104         struct UploadDataStruc UploadData;
 105
 106
 107         ActIter = ActivityListPtr->find((int)ItemIndex);
 108
 109         static const char* query =
 110         "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
 111         "<C:addressbook-query xmlns:D=\"DAV:\""
 112         "       xmlns:C=\"urn:ietf:params:xml:ns:carddav\">"
 113         "<D:prop><D:getetag/>"
 114         //"<C:address-data>"
 115         //"     <C:allprop/>"
 116         //"</C:address-data></D:prop>"
 117         "</D:prop>"
 118         "<C:filter/>"
 119         "</C:addressbook-query>";
 120
 121         if (ServerSSL){
 122
 123                 wxString ServerCertFilename;
 124                 bool MatchingCert = FALSE;
 125
 126                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressSSL.mb_str(wxConvUTF8));
 127                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 0);
 128                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 129                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 130                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 131                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 132                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 133                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 134                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 135                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 136                 curl_easy_setopt(conn, CURLOPT_PROGRESSDATA, this);
 137                 curl_easy_setopt(conn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 138                 curl_easy_setopt(conn, CURLOPT_CUSTOMREQUEST, "REPORT");
 139                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 140
 141                 //UploadData.readptr = &CardDAVDataQuery;
 142                 //UploadData.sizeleft = CardDAVDataQuery.Len();
 143                 //curl_easy_setopt(conn, CURLOPT_UPLOAD, 1);
 144                 //curl_easy_setopt(conn, CURLOPT_READDATA, &UploadData);
 145                 //curl_easy_setopt(conn, CURLOPT_READFUNCTION, UploadReadFunc);
 146
 147                 //curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, writefunc);
 148                 curl_easy_setopt(conn, CURLOPT_POSTFIELDS, query);
 149                 curl_easy_setopt(conn, CURLOPT_POSTFIELDSIZE, strlen(query));
 150
 151                 ServerCertFilename = GetAccountDir(ServerAccount, TRUE);
 152
 153                 if (wxFile::Exists(ServerCertFilename) == TRUE){
 154
 155                         curl_easy_setopt(conn, CURLOPT_SSL_VERIFYPEER, 1);
 156                         curl_easy_setopt(conn, CURLOPT_SSL_VERIFYHOST, 2);
 157                         curl_easy_setopt(conn, CURLOPT_CAINFO, (const char*)ServerCertFilename.mb_str(wxConvUTF8));
 158
 159                 }
 160
 161                 claconncode = (curl_easy_perform(conn));
 162
 163                 // If CURLE_PEER_FAILED_VERIFICATION is returned, retry without
 164                 // the local certificate in use.
 165
 166                 if (claconncode == CURLE_PEER_FAILED_VERIFICATION){
 167
 168                         curl_easy_cleanup(conn);
 169                         conn = curl_easy_init();
 170
 171                         curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressSSL.mb_str(wxConvUTF8));
 172                         curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 0);
 173                         curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 174                         curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 175                         curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 176                         curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 177                         curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 178                         curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 179                         curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 180                         curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 181                         curl_easy_setopt(conn, CURLOPT_PROGRESSDATA, this);
 182                         curl_easy_setopt(conn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 183                         curl_easy_setopt(conn, CURLOPT_CUSTOMREQUEST, "REPORT");
 184                         curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 185                         curl_easy_setopt(conn, CURLOPT_POSTFIELDS, query);
 186                         curl_easy_setopt(conn, CURLOPT_POSTFIELDSIZE, strlen(query));
 187
 188                         claconncode = (curl_easy_perform(conn));
 189
 190                         // If claconncode is CURLE_OK then delete the certificate file as that
 191                         // is no longer needed.
 192
 193                         if (claconncode == CURLE_OK){
 194
 195                                 // Delete the certificate file.
 196
 197                                 wxRemoveFile(ServerCertFilename);
 198
 199                         }
 200
 201                 }
 202
 203                 // Check if it fails with a CURLE_SSL_CACERT then compare
 204                 // the certificates as PEM files.
 205
 206                 if (claconncode == CURLE_SSL_CACERT && wxFile::Exists(ServerCertFilename) == TRUE){
 207
 208                         //curl_easy_cleanup(conn);
 209                         //conn = curl_easy_init();
 210
 211                         CURL *sslerrconn;
 212                         sslerrconn = curl_easy_init();
 213                         CURLcode sslerrconncode;
 214
 215                         //claconncode = (curl_easy_perform(conn));
 216
 217                         wxString ServerAddressOnly = wxT("https://") + ServerAddress + wxT(":") + wxString::Format(wxT("%i"), ServerPort) + wxT("/");
 218
 219                         PageData.clear();
 220                         PageHeader.clear();
 221
 222                         curl_easy_setopt(sslerrconn, CURLOPT_URL, (const char*)ServerAddressOnly.mb_str(wxConvUTF8));
 223                         curl_easy_setopt(sslerrconn, CURLOPT_NOPROGRESS, 0);
 224                         curl_easy_setopt(sslerrconn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 225                         curl_easy_setopt(sslerrconn, CURLOPT_TIMEOUT, 60);
 226                         curl_easy_setopt(sslerrconn, CURLOPT_FAILONERROR, TRUE);
 227                         curl_easy_setopt(sslerrconn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 228                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 229                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEDATA, &PageData);
 230                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEHEADER, &PageHeader);
 231                         curl_easy_setopt(sslerrconn, CURLOPT_PROGRESSDATA, this);
 232                         curl_easy_setopt(sslerrconn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 233                         curl_easy_setopt(sslerrconn, CURLOPT_NOSIGNAL, 1);
 234                         curl_easy_setopt(sslerrconn, CURLOPT_SSL_VERIFYPEER, 0);
 235                         curl_easy_setopt(sslerrconn, CURLOPT_CERTINFO, 1);
 236                         curl_easy_setopt(sslerrconn, CURLOPT_SSL_VERIFYPEER, 1);
 237                         curl_easy_setopt(sslerrconn, CURLOPT_SSL_VERIFYHOST, 2);
 238                         curl_easy_setopt(sslerrconn, CURLOPT_CAINFO, (const char*)ServerCertFilename.mb_str(wxConvUTF8));
 239
 240                         wxString SSLLocalData;
 241                         wxString SSLServerData;
 242
 243                         sslerrconncode = (curl_easy_perform(sslerrconn));
 244
 245                         SSLCertCol = BuildSSLCollection(sslerrconn);
 246                         std::map<int, SSLCertData>::iterator SSLCDIter = SSLCertCol.SSLCollection.find(0);
 247                         std::multimap<wxString,wxString>::iterator SSLDataIter = SSLCDIter->second.CertData.find(wxT("Cert"));
 248
 249                         wxFFile SSLLocalFile;
 250
 251 #if wxABI_VERSION < 20900
 252                         SSLLocalFile.Open(ServerCertFilename.c_str(), wxT("r"));
 253 #else
 254                         SSLLocalFile.Open(ServerCertFilename, wxT("r"));
 255 #endif
 256
 257                         // Load the recovery database for tasks not done.
 258
 259                         if (SSLLocalFile.IsOpened() == TRUE){
 260
 261                         // Check if we are using wxWidgets version 2.8 or less and
 262                         // execute the required command accordingly.
 263
 264                                 SSLLocalFile.ReadAll(&SSLLocalData, wxConvAuto());
 265
 266
 267                         }
 268
 269                         SSLServerData = SSLDataIter->second;
 270
 271                         if (SSLLocalData == SSLServerData){
 272
 273                                 // Server key matches with local key so retry with CURLOPT_SSL_VERIFYPEER
 274                                 // and CURLOPT_SSL_VERIFYHOST off.
 275
 276                                 curl_easy_cleanup(conn);
 277                                 conn = curl_easy_init();
 278
 279                                 PageData.clear();
 280                                 PageHeader.clear();
 281
 282                                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressSSL.mb_str(wxConvUTF8));
 283                                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 0);
 284                                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 285                                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 286                                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 287                                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 288                                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 289                                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 290                                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 291                                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 292                                 curl_easy_setopt(conn, CURLOPT_PROGRESSDATA, this);
 293                                 curl_easy_setopt(conn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 294                                 curl_easy_setopt(conn, CURLOPT_CUSTOMREQUEST, "REPORT");
 295                                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 296                                 curl_easy_setopt(conn, CURLOPT_POSTFIELDS, query);
 297                                 curl_easy_setopt(conn, CURLOPT_POSTFIELDSIZE, strlen(query));
 298                                 curl_easy_setopt(conn, CURLOPT_SSL_VERIFYPEER, 0);
 299                                 curl_easy_setopt(conn, CURLOPT_SSL_VERIFYHOST, 0);
 300
 301                                 claconncode = (curl_easy_perform(conn));
 302
 303                                 MatchingCert = TRUE;
 304
 305                         }
 306
 307                         if (MatchingCert == FALSE){
 308
 309                                 claconncode = CURLE_SSL_CACERT;
 310                                 return;
 311
 312                         }
 313
 314                         curl_easy_cleanup(sslerrconn);
 315
 316                 }
 317
 318                 // Sort out SSL error.
 319
 320                 // When SSL cert error occurs, connect again and fetch certificates.
 321                 // Display a message to the user explaining that an invalid
 322                 // certificate has been given and let the user decide what
 323                 // to do next.
 324
 325                 if (claconncode == CURLE_OK){
 326
 327                 } else if (claconncode == CURLE_SSL_CACERT || claconncode == CURLE_PEER_FAILED_VERIFICATION){
 328
 329                         CURL *sslerrconn;
 330                         sslerrconn = curl_easy_init();
 331                         CURLcode sslerrconncode;
 332
 333                         wxString ServerAddressOnly = wxT("https://") + ServerAddress + wxT(":") + wxString::Format(wxT("%i"), ServerPort) + wxT("/");
 334
 335                         // Replace conn with sslerrconn!
 336
 337                         curl_easy_setopt(sslerrconn, CURLOPT_URL, (const char*)ServerAddressOnly.mb_str(wxConvUTF8));
 338                         curl_easy_setopt(sslerrconn, CURLOPT_NOPROGRESS, 0);
 339                         curl_easy_setopt(sslerrconn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 340                         curl_easy_setopt(sslerrconn, CURLOPT_TIMEOUT, 60);
 341                         curl_easy_setopt(sslerrconn, CURLOPT_FAILONERROR, TRUE);
 342                         curl_easy_setopt(sslerrconn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 343                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 344                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEDATA, &PageData);
 345                         curl_easy_setopt(sslerrconn, CURLOPT_WRITEHEADER, &PageHeader);
 346                         curl_easy_setopt(sslerrconn, CURLOPT_PROGRESSDATA, this);
 347                         curl_easy_setopt(sslerrconn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 348                         curl_easy_setopt(sslerrconn, CURLOPT_NOSIGNAL, 1);
 349                         curl_easy_setopt(sslerrconn, CURLOPT_SSL_VERIFYPEER, 0);
 350                         curl_easy_setopt(sslerrconn, CURLOPT_CERTINFO, 1);
 351
 352                         sslerrconncode = (curl_easy_perform(sslerrconn));
 353
 354                         SSLCertCol = BuildSSLCollection(sslerrconn);
 355                         SSLCertCol.SuccessCode = 1;
 356
 357                         curl_easy_cleanup(conn);
 358                         curl_easy_cleanup(sslerrconn);
 359
 360                         return;
 361
 362                 } else if (claconncode == CURLE_HTTP_RETURNED_ERROR){
 363
 364                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 365                                         curl_easy_strerror(claconncode));
 366                         int http_code = 0;
 367                         curl_easy_getinfo(conn, CURLINFO_RESPONSE_CODE, &http_code);
 368                         fprintf(stderr, "Error code was: %d\n", http_code);
 369
 370                         curl_easy_cleanup(conn);
 371
 372                         return;
 373
 374                 } else {
 375
 376                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 377                                         curl_easy_strerror(claconncode));
 378                         int http_code = 0;
 379                         curl_easy_getinfo(conn, CURLINFO_RESPONSE_CODE, &http_code);
 380                         fprintf(stderr, "Error code was: %d\n", http_code);
 381
 382                         curl_easy_cleanup(conn);
 383
 384                         return;
 385
 386                 }
 387
 388         } else {
 389
 390                 // No SSL.
 391
 392                 wxString EmptyString;
 393
 394                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressNormal.mb_str(wxConvUTF8));
 395                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 0);
 396                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 397                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 398                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 399                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 400                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 401                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 402                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 403                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 404                 curl_easy_setopt(conn, CURLOPT_PROGRESSDATA, this);
 405                 curl_easy_setopt(conn, CURLOPT_PROGRESSFUNCTION, ProgressFunc);
 406                 curl_easy_setopt(conn, CURLOPT_CUSTOMREQUEST, "REPORT");
 407                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 408
 409                 //UploadData.readptr = &CardDAVDataQuery;
 410                 //UploadData.sizeleft = CardDAVDataQuery.Len();
 411                 //curl_easy_setopt(conn, CURLOPT_UPLOAD, 1);
 412                 //curl_easy_setopt(conn, CURLOPT_READDATA, &UploadData);
 413                 //curl_easy_setopt(conn, CURLOPT_READFUNCTION, UploadReadFunc);
 414
 415                 //curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, writefunc);
 416                 curl_easy_setopt(conn, CURLOPT_POSTFIELDS, query);
 417                 curl_easy_setopt(conn, CURLOPT_POSTFIELDSIZE, strlen(query));
 418
 419                 PageData.Clear();
 420                 PageHeader.Clear();
 421
 422                 conncode = (curl_easy_perform(conn));
 423
 424                 if (conncode == CURLE_OK){
 425
 426                 } else if (conncode == CURLE_HTTP_RETURNED_ERROR){
 427
 428                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 429                                         curl_easy_strerror(conncode));
 430
 431                         return;
 432
 433                 } else {
 434
 435                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 436                                         curl_easy_strerror(conncode));
 437
 438                         return;
 439
 440                 }
 441
 442         }
 443
 444         xmlDocPtr xmlCardDAVDoc;
 445
 446         xmlCardDAVDoc = xmlReadMemory(PageData.mb_str(wxConvUTF8), (int)PageData.Len(), "noname.xml", NULL, 0);
 447
 448         xmlNodePtr nodeLevel1;
 449         xmlNodePtr nodeLevel2;
 450         xmlNodePtr nodeLevel3;
 451         xmlNodePtr nodeLevel4;
 452         xmlNodePtr nodeLevel5;
 453         xmlNodePtr nodeLevel6;
 454
 455         std::map<wxString,wxString> xmlDataMap;
 456
 457         wxString DataFilename;
 458         wxString ETagData;
 459
 460         std::string xmlStringSafe;
 461
 462         // Tranverse through the catacombs of the response to get our ETag for the file.
 463
 464         for (nodeLevel1 = xmlCardDAVDoc->children;
 465                 nodeLevel1 != NULL;
 466                 nodeLevel1 = nodeLevel1->next)
 467         {
 468
 469                 bool HREFFound = FALSE;
 470                 bool ETagFound = FALSE;
 471
 472                 for (nodeLevel2 = nodeLevel1->children;
 473                         nodeLevel2 != NULL;
 474                         nodeLevel2 = nodeLevel2->next)
 475                 {
 476
 477                         for (nodeLevel3 = nodeLevel2->children;
 478                         nodeLevel3 != NULL;
 479                         nodeLevel3 = nodeLevel3->next)
 480                         {
 481
 482                                 if (!xmlStrcmp(nodeLevel3->name, (const xmlChar *)"href") ||
 483                                 !xmlStrcmp(nodeLevel3->name, (const xmlChar *)"d:href") ||
 484                                 !xmlStrcmp(nodeLevel3->name, (const xmlChar *)"D:href")
 485                                 ){
 486
 487                                         // Get the filename.
 488
 489                                         for (nodeLevel4 = nodeLevel3->children;
 490                                         nodeLevel4 != NULL;
 491                                         nodeLevel4 = nodeLevel4->next)
 492                                         {
 493
 494                                                 if (!xmlStrcmp(nodeLevel4->name, (const xmlChar *)"text") ||
 495                                                 !xmlStrcmp(nodeLevel4->name, (const xmlChar *)"d:text") ||
 496                                                 !xmlStrcmp(nodeLevel4->name, (const xmlChar *)"D:text")
 497                                                 ){
 498
 499                                                         DataFilename = wxString::FromUTF8((const char*)nodeLevel4->content);
 500                                                         wxStringTokenizer wSTDFilename(DataFilename, wxT("/"));
 501
 502                                                         while (wSTDFilename.HasMoreTokens()){
 503
 504                                                                 DataFilename = wSTDFilename.GetNextToken();
 505
 506                                                         }
 507
 508                                                         HREFFound = TRUE;
 509
 510                                                 }
 511
 512
 513
 514                                         }
 515
 516                                 } else {
 517
 518                                         for (nodeLevel4 = nodeLevel3->children;
 519                                         nodeLevel4 != NULL;
 520                                         nodeLevel4 = nodeLevel4->next)
 521                                         {
 522
 523                                                         for (nodeLevel5 = nodeLevel4->children;
 524                                                         nodeLevel5 != NULL;
 525                                                         nodeLevel5 = nodeLevel5->next)
 526                                                         {
 527
 528                                                                 if (!xmlStrcmp(nodeLevel5->name, (const xmlChar *)"getetag") ||
 529                                                                 !xmlStrcmp(nodeLevel5->name, (const xmlChar *)"d:getetag") ||
 530                                                                 !xmlStrcmp(nodeLevel5->name, (const xmlChar *)"D:getetag")
 531                                                                 ){
 532
 533                                                                         for (nodeLevel6 = nodeLevel5->children;
 534                                                                         nodeLevel6 != NULL;
 535                                                                         nodeLevel6 = nodeLevel6->next)
 536                                                                         {
 537
 538                                                                                 // Strip the quotes from the ETag.
 539
 540                                                                                 ETagData = wxString::FromUTF8((const char*)nodeLevel6->content);
 541                                                                                 if (ETagData.Mid(0, 1) == wxT("\"") && ETagData.Mid((ETagData.Len() - 1), 1) == wxT("\"")){
 542
 543                                                                                         ETagData.Remove(0, 1);
 544                                                                                         ETagData.RemoveLast();
 545
 546                                                                                 }
 547
 548                                                                                 ETagFound = TRUE;
 549
 550                                                                         }
 551
 552                                                                 }
 553
 554                                                         }
 555
 556                                         }
 557
 558                                 }
 559
 560                         }
 561
 562                 }
 563
 564                 if (HREFFound == TRUE && ETagFound == TRUE){
 565
 566                         // Add to the map data.
 567
 568                         xmlDataMap.insert(std::make_pair(DataFilename, ETagData));
 569
 570                         HREFFound = FALSE;
 571                         ETagFound = FALSE;
 572
 573                 }
 574
 575
 576         }
 577
 578         xmlFreeDoc(xmlCardDAVDoc);
 579
 580         // Get the first result.
 581
 582         for (std::map<wxString,wxString>::iterator iter = xmlDataMap.begin();
 583                 iter != xmlDataMap.end(); ++iter){
 584
 585                 ETagResult = iter->second;
 586                 break;
 587
 588         }
 589
 590         if (ETagResult.IsEmpty()){
 591
 592                 return;
 593
 594         }
 595
 596         return;
 597
 598 }
 599
 600 void CardDAV::GetServerETagValue(){
 601
 602         // Get the server etag value.
 603
 604         std::thread ConnectThread(&CardDAV::GetServerETagValueThread, this);
 605         ConnectThread.detach();
 606
 607 }