source/carddav/carddav-connect.cpp

   1 // carddav-connect.cpp - CardDAV Object - Connect 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 bool CardDAV::Connect(){
  32
  33         // Connect to the CardDAV server.
  34
  35         PageData.Clear();
  36         PageHeader.Clear();
  37
  38         SSLStatus = TRUE;
  39         AuthPassed = TRUE;
  40         AbortConnection = FALSE;
  41
  42         CURL *conn;
  43         CURLcode conncode;
  44         wxString ServerAddressURL;
  45         wxString ServerAuth;
  46         wxString ServerAddressSSL;
  47         wxString ServerAddressNormal;
  48
  49         conn = curl_easy_init();
  50
  51         struct CardDAVCURLPasser {
  52
  53                 CardDAV *Data;
  54                 bool HeaderMode = TRUE;
  55
  56         } CardDAVHeader, CardDAVFooter;
  57
  58         CardDAVHeader.Data = this;
  59         CardDAVHeader.HeaderMode = TRUE;
  60
  61         CardDAVFooter.Data = this;
  62         CardDAVFooter.HeaderMode = FALSE;
  63
  64         wxString Data1;
  65         wxString Data2;
  66
  67         ServerAddressURL = ServerAddress + wxT(":") + wxString::Format(wxT("%i"), ServerPort) + wxT("/");
  68         ServerAddressSSL = wxT("https://") + ServerAddressURL;
  69         ServerAddressNormal = wxT("http://") + ServerAddressURL;
  70
  71         ServerAuth = ServerUser + wxT(":") + ServerPass;
  72
  73         // Try SSL first.
  74
  75         if (ServerSSL){
  76
  77                 union {
  78                         struct curl_slist       *certdata;
  79                         struct curl_certinfo    *certinfo;
  80                 } ptr;
  81
  82                 ptr.certdata = NULL;
  83
  84                 // Setup two initial connections and attempt to get the certificate data.
  85
  86                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressSSL.mb_str(wxConvUTF8));
  87                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 1L);
  88                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
  89                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
  90                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
  91                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
  92                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
  93                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
  94                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
  95                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
  96                 curl_easy_setopt(conn, CURLOPT_CERTINFO, 1);
  97
  98                 conncode = (curl_easy_perform(conn));
  99
 100                 // Check if the SSL certificate is valid or self-signed or some other
 101                 // error occured.
 102
 103                 if (conncode == CURLE_OK){
 104
 105                         // Connection is OK. Do nothing.
 106
 107                 } else if (conncode == CURLE_SSL_CACERT){
 108
 109                         // Post message saying SSL certificate is invalid.
 110
 111                         curl_easy_getinfo(conn, CURLINFO_CERTINFO, &ptr.certdata);
 112
 113                 } else {
 114
 115                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 116                                 curl_easy_strerror(conncode));
 117
 118                         ErrorMessage = wxString::Format(wxT("%s"), curl_easy_strerror(conncode));
 119
 120                         *ServerResult = FALSE;
 121                         return FALSE;
 122
 123                 }
 124
 125                 ServerAddressSSL.append("principals/");
 126
 127                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressSSL.mb_str(wxConvUTF8));
 128                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 1L);
 129                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 130                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 131                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 132                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 133                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 134                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 135                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 136                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 137                 curl_easy_setopt(conn, CURLOPT_CUSTOMREQUEST, "OPTIONS");
 138                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 139                 curl_easy_setopt(conn, CURLOPT_CERTINFO, 1);
 140
 141                 if (AllowSelfSign == TRUE){
 142                         curl_easy_setopt(conn, CURLOPT_SSL_VERIFYPEER, 0L);
 143                         curl_easy_setopt(conn, CURLOPT_SSL_VERIFYHOST, 0L);
 144                 }
 145
 146 #if defined(__APPLE__) || defined(__WIN32__)
 147
 148                 SetConnectionObject(conn);
 149
 150 #endif
 151
 152                 conncode = (curl_easy_perform(conn));
 153
 154                 ptr.certdata = NULL;
 155
 156                 curl_easy_getinfo(conn, CURLINFO_CERTINFO, &ptr.certdata);
 157
 158                 if (conncode == CURLE_OK){
 159
 160                         // Process the server header response and look for
 161                         // 'addressbook' within the DAV header.
 162
 163                         wxStringTokenizer wxSHeaderLines(PageHeader, wxT("\r\n"));
 164                         wxString wxSHeaderLine;
 165                         std::map<int, wxString> DAVHeaderLines;
 166
 167                         while (wxSHeaderLines.HasMoreTokens()){
 168
 169                                 wxSHeaderLine = wxSHeaderLines.GetNextToken();
 170
 171                                 if (wxSHeaderLine.Mid(0, 4) == wxT("DAV:")){
 172
 173                                         // Look for address book in the line.
 174
 175                                         if (wxSHeaderLine.Find(wxT("addressbook")) != wxNOT_FOUND){
 176
 177                                                 HasCalDAVSupport = TRUE;
 178
 179                                         }
 180
 181                                 }
 182
 183                         }
 184
 185                         *ServerResult = TRUE;
 186                         ValidResponse = TRUE;
 187                         AuthPassed = TRUE;
 188                         SSLStatus = TRUE;
 189                         return TRUE;
 190
 191                 } else if (conncode == CURLE_HTTP_RETURNED_ERROR){
 192
 193                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 194                                         curl_easy_strerror(conncode));
 195
 196                         ErrorMessage = wxString::Format(wxT("%s"), curl_easy_strerror(conncode));
 197
 198                         *ServerResult = TRUE;
 199                         ValidResponse = FALSE;
 200                         AuthPassed = FALSE;
 201                         SSLStatus = TRUE;
 202                         return TRUE;
 203
 204                 } else {
 205
 206                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 207                                         curl_easy_strerror(conncode));
 208
 209                         ErrorMessage = wxString::Format(wxT("%s"), curl_easy_strerror(conncode));
 210
 211                         *ServerResult = FALSE;
 212                         return FALSE;
 213
 214                 }
 215
 216         } else {
 217
 218         // No SSL.
 219
 220                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressNormal.mb_str(wxConvUTF8));
 221                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 1L);
 222                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 223                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 224                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 225                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 226                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 227                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 228                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 229                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 230                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 231
 232                 conncode = (curl_easy_perform(conn));
 233
 234                 if (conncode == CURLE_OK){
 235
 236                         // Process the server header response and look for
 237                         // 'addressbook' within the DAV header.
 238
 239                         wxStringTokenizer wxSHeaderLines(PageHeader, wxT("\r\n"));
 240                         wxString wxSHeaderLine;
 241                         std::map<int, wxString> DAVHeaderLines;
 242
 243                         while (wxSHeaderLines.HasMoreTokens()){
 244
 245                                 wxSHeaderLine = wxSHeaderLines.GetNextToken();
 246
 247                                 if (wxSHeaderLine.Mid(0, 4) == wxT("DAV:")){
 248
 249                                         // Look for address book in the line.
 250
 251                                         if (wxSHeaderLine.Find(wxT("addressbook")) != wxNOT_FOUND){
 252
 253                                                 HasCalDAVSupport = TRUE;
 254
 255                                         }
 256
 257                                 }
 258
 259                         }
 260
 261                         *ServerResult = TRUE;
 262                         ValidResponse = TRUE;
 263                         AuthPassed = TRUE;
 264                         SSLStatus = FALSE;
 265                         return TRUE;
 266
 267                 } else if (conncode == CURLE_HTTP_RETURNED_ERROR){
 268
 269                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 270                                         curl_easy_strerror(conncode));
 271
 272                         *ServerResult = TRUE;
 273                         ValidResponse = FALSE;
 274                         AuthPassed = FALSE;
 275                         SSLStatus = FALSE;
 276                         return TRUE;
 277
 278                 } else {
 279
 280                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 281                                         curl_easy_strerror(conncode));
 282
 283                         *ServerResult = FALSE;
 284                         return FALSE;
 285
 286                 }
 287
 288                 // TODO: Double check and make sure HTTP Authentication is possible.
 289
 290         }
 291
 292         *ServerResult = TRUE;
 293         return TRUE;
 294
 295 }