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_CERTINFO, 1);
  88
  89                 conncode = (curl_easy_perform(conn));
  90
  91                 // Check if the SSL certificate is valid or self-signed or some other
  92                 // error occured.
  93
  94                 if (conncode == CURLE_OK){
  95
  96                         // Connection is OK. Do nothing.
  97
  98                 } else if (conncode == CURLE_SSL_CACERT){
  99
 100                         // Post message saying SSL certificate is invalid.
 101
 102                         curl_easy_getinfo(conn, CURLINFO_CERTINFO, &ptr.certdata);
 103
 104                 } else {
 105
 106                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 107                                 curl_easy_strerror(conncode));
 108
 109                         ErrorMessage = wxString::Format(wxT("%s"), curl_easy_strerror(conncode));
 110
 111                         *ServerResult = FALSE;
 112                         return FALSE;
 113
 114                 }
 115
 116                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressSSL.mb_str(wxConvUTF8));
 117                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 1L);
 118                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 119                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 120                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 121                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 122                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 123                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 124                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 125                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 126                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 127                 curl_easy_setopt(conn, CURLOPT_CERTINFO, 1);
 128
 129                 if (AllowSelfSign == TRUE){
 130                         curl_easy_setopt(conn, CURLOPT_SSL_VERIFYPEER, 0L);
 131                         curl_easy_setopt(conn, CURLOPT_SSL_VERIFYHOST, 0L);
 132                 }
 133
 134                 SetConnectionObject(conn);
 135
 136                 conncode = (curl_easy_perform(conn));
 137
 138                 ptr.certdata = NULL;
 139
 140                 curl_easy_getinfo(conn, CURLINFO_CERTINFO, &ptr.certdata);
 141
 142                 if (conncode == CURLE_OK){
 143
 144                         // Process the server header response and look for
 145                         // 'addressbook' within the DAV header.
 146
 147                         wxStringTokenizer wxSHeaderLines(PageHeader, wxT("\r\n"));
 148                         wxString wxSHeaderLine;
 149                         std::map<int, wxString> DAVHeaderLines;
 150
 151                         while (wxSHeaderLines.HasMoreTokens()){
 152
 153                                 wxSHeaderLine = wxSHeaderLines.GetNextToken();
 154
 155                                 if (wxSHeaderLine.Mid(0, 4) == wxT("DAV:")){
 156
 157                                         // Look for address book in the line.
 158
 159                                         if (wxSHeaderLine.Find(wxT("addressbook")) != wxNOT_FOUND){
 160
 161                                                 HasCalDAVSupport = TRUE;
 162
 163                                         }
 164
 165                                 }
 166
 167                         }
 168
 169                         *ServerResult = TRUE;
 170                         ValidResponse = TRUE;
 171                         AuthPassed = TRUE;
 172                         SSLStatus = TRUE;
 173                         return TRUE;
 174
 175                 } else if (conncode == CURLE_HTTP_RETURNED_ERROR){
 176
 177                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 178                                         curl_easy_strerror(conncode));
 179
 180                         ErrorMessage = wxString::Format(wxT("%s"), curl_easy_strerror(conncode));
 181
 182                         *ServerResult = TRUE;
 183                         ValidResponse = FALSE;
 184                         AuthPassed = FALSE;
 185                         SSLStatus = TRUE;
 186                         return TRUE;
 187
 188                 } else {
 189
 190                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 191                                         curl_easy_strerror(conncode));
 192
 193                         ErrorMessage = wxString::Format(wxT("%s"), curl_easy_strerror(conncode));
 194
 195                         *ServerResult = FALSE;
 196                         return FALSE;
 197
 198                 }
 199
 200         } else {
 201
 202         // No SSL.
 203
 204                 curl_easy_setopt(conn, CURLOPT_URL, (const char*)ServerAddressNormal.mb_str(wxConvUTF8));
 205                 curl_easy_setopt(conn, CURLOPT_NOPROGRESS, 1L);
 206                 curl_easy_setopt(conn, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 207                 curl_easy_setopt(conn, CURLOPT_TIMEOUT, 60);
 208                 curl_easy_setopt(conn, CURLOPT_FAILONERROR, TRUE);
 209                 curl_easy_setopt(conn, CURLOPT_USERAGENT, XSDAB_USERAGENT);
 210                 curl_easy_setopt(conn, CURLOPT_USERPWD, (const char*)ServerAuth.mb_str(wxConvUTF8));
 211                 curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, WritebackFunc);
 212                 curl_easy_setopt(conn, CURLOPT_WRITEDATA, &PageData);
 213                 curl_easy_setopt(conn, CURLOPT_WRITEHEADER, &PageHeader);
 214                 curl_easy_setopt(conn, CURLOPT_NOSIGNAL, 1);
 215
 216                 conncode = (curl_easy_perform(conn));
 217
 218                 if (conncode == CURLE_OK){
 219
 220                         // Process the server header response and look for
 221                         // 'addressbook' within the DAV header.
 222
 223                         wxStringTokenizer wxSHeaderLines(PageHeader, wxT("\r\n"));
 224                         wxString wxSHeaderLine;
 225                         std::map<int, wxString> DAVHeaderLines;
 226
 227                         while (wxSHeaderLines.HasMoreTokens()){
 228
 229                                 wxSHeaderLine = wxSHeaderLines.GetNextToken();
 230
 231                                 if (wxSHeaderLine.Mid(0, 4) == wxT("DAV:")){
 232
 233                                         // Look for address book in the line.
 234
 235                                         if (wxSHeaderLine.Find(wxT("addressbook")) != wxNOT_FOUND){
 236
 237                                                 HasCalDAVSupport = TRUE;
 238
 239                                         }
 240
 241                                 }
 242
 243                         }
 244
 245                         *ServerResult = TRUE;
 246                         ValidResponse = TRUE;
 247                         AuthPassed = TRUE;
 248                         SSLStatus = FALSE;
 249                         return TRUE;
 250
 251                 } else if (conncode == CURLE_HTTP_RETURNED_ERROR){
 252
 253                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 254                                         curl_easy_strerror(conncode));
 255
 256                         *ServerResult = TRUE;
 257                         ValidResponse = FALSE;
 258                         AuthPassed = FALSE;
 259                         SSLStatus = FALSE;
 260                         return TRUE;
 261
 262                 } else {
 263
 264                         fprintf(stderr, "curl_easy_perform() failed: %s\n",
 265                                         curl_easy_strerror(conncode));
 266
 267                         *ServerResult = FALSE;
 268                         return FALSE;
 269
 270                 }
 271
 272                 // TODO: Double check and make sure HTTP Authentication is possible.
 273
 274         }
 275
 276         *ServerResult = TRUE;
 277         return TRUE;
 278
 279 }