src/common/url.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        url.cpp
   3 // Purpose:     URL parser
   4 // Author:      Guilhem Lavaux
   5 // Modified by:
   6 // Created:     20/07/1997
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1997, 1998 Guilhem Lavaux
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "url.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #if wxUSE_SOCKETS
  24
  25 #ifndef WX_PRECOMP
  26 #endif
  27
  28 #include <string.h>
  29 #include <ctype.h>
  30
  31 // wxWindows headers
  32 #include <wx/string.h>
  33 #include <wx/list.h>
  34 #include <wx/utils.h>
  35
  36 // wxSocket header
  37 #include "wx/url.h"
  38
  39 #if !USE_SHARED_LIBRARY
  40 IMPLEMENT_CLASS(wxProtoInfo, wxObject)
  41 IMPLEMENT_CLASS(wxURL, wxObject)
  42 #endif
  43
  44 // Protocols list
  45 wxProtoInfo *wxURL::g_protocols = NULL;
  46 wxHTTP *wxURL::g_proxy;
  47
  48 /////////////////////////////////////////////////////////////////
  49 // wxURL ////////////////////////////////////////////////////////
  50 /////////////////////////////////////////////////////////////////
  51
  52 /*
  53  * --------------------------------------------------------------
  54  * --------- wxURL CONSTRUCTOR DESTRUCTOR -----------------------
  55  * --------------------------------------------------------------
  56  */
  57
  58 wxURL::wxURL(const wxString& url)
  59 {
  60   m_protocol = NULL;
  61   if (g_proxy->IsConnected()) {
  62     m_protocol = g_proxy;
  63     m_protoname = "proxy";
  64     m_path = url;
  65     return;
  66   }
  67   m_url = url;
  68   m_error = wxURL_NOERR;
  69   ParseURL();
  70 }
  71
  72 bool wxURL::ParseURL()
  73 {
  74   wxString last_url = m_url;
  75
  76   // Clean up
  77   CleanData();
  78
  79   // Extract protocol name
  80   if (!PrepProto(last_url)) {
  81     m_error = wxURL_SNTXERR;
  82     return FALSE;
  83   }
  84
  85   // Find and create the protocol object
  86   if (!FetchProtocol()) {
  87     m_error = wxURL_NOPROTO;
  88     return FALSE;
  89   }
  90
  91   // Do we need a host name ?
  92   if (m_protoinfo->m_needhost) {
  93     // Extract it
  94     if (!PrepHost(last_url)) {
  95       m_error = wxURL_SNTXERR;
  96       return FALSE;
  97     }
  98   }
  99
 100   // Extract full path
 101   if (!PrepPath(last_url)) {
 102     m_error = wxURL_NOPATH;
 103     return FALSE;
 104   }
 105
 106   m_error = wxURL_NOERR;
 107   return TRUE;
 108 }
 109
 110 void wxURL::CleanData()
 111 {
 112   if (m_protoname != "proxy")
 113     delete m_protocol;
 114 }
 115
 116 wxURL::~wxURL()
 117 {
 118   CleanData();
 119 }
 120
 121 /*
 122  * --------------------------------------------------------------
 123  * --------- wxURL urls decoders --------------------------------
 124  * --------------------------------------------------------------
 125  */
 126 bool wxURL::PrepProto(wxString& url)
 127 {
 128   int pos;
 129
 130   // Find end
 131   pos = url.Find(':');
 132   if (pos == -1)
 133     return FALSE;
 134
 135   m_protoname = url(0, pos);
 136
 137   url = url(pos+1, url.Length());
 138
 139   return TRUE;
 140 }
 141
 142 bool wxURL::PrepHost(wxString& url)
 143 {
 144   wxString temp_url;
 145   int pos, pos2;
 146
 147   if ((url.GetChar(0) != '/') || (url.GetChar(1) != '/'))
 148     return FALSE;
 149
 150   url = url(2, url.Length());
 151
 152   pos = url.Find('/');
 153   if (pos == -1)
 154     pos = url.Length();
 155
 156   if (pos == 0)
 157     return FALSE;
 158
 159   temp_url = url(0, pos);
 160   url = url(url.Find('/'), url.Length());
 161
 162   // Retrieve service number
 163   pos2 = temp_url.Find(':', TRUE);
 164   if (pos2 != -1 && pos2 < pos) {
 165     m_servname = temp_url(pos2+1, pos);
 166     if (!m_servname.IsNumber())
 167       return FALSE;
 168     temp_url = temp_url(0, pos2);
 169   }
 170
 171   // Retrieve user and password.
 172   pos2 = temp_url.Find('@');
 173   // Even if pos2 equals -1, this code is right.
 174   m_hostname = temp_url(pos2+1, temp_url.Length());
 175
 176   m_user = "";
 177   m_password = "";
 178
 179   if (pos2 == -1)
 180     return TRUE;
 181
 182   temp_url = temp_url(0, pos2);
 183   pos2 = temp_url.Find(':');
 184
 185   if (pos2 == -1)
 186     return FALSE;
 187
 188   m_user = temp_url(0, pos2);
 189   m_password = temp_url(pos2+1, url.Length());
 190
 191   return TRUE;
 192 }
 193
 194 bool wxURL::PrepPath(wxString& url)
 195 {
 196   if (url.Length() != 0)
 197     m_path = url;
 198   else
 199     m_path = "/";
 200   return TRUE;
 201 }
 202
 203 bool wxURL::FetchProtocol()
 204 {
 205   wxProtoInfo *info = g_protocols;
 206
 207   while (info) {
 208     if (m_protoname == info->m_protoname) {
 209       if (m_servname.IsNull())
 210         m_servname = info->m_servname;
 211
 212       m_protoinfo = info;
 213       m_protocol = (wxProtocol *)m_protoinfo->m_cinfo->CreateObject();
 214       wxSocketHandler::Master().Register(m_protocol);
 215       return TRUE;
 216     }
 217     info = info->next;
 218   }
 219   return FALSE;
 220 }
 221
 222 /*
 223  * --------------------------------------------------------------
 224  * --------- wxURL get ------------------------------------------
 225  * --------------------------------------------------------------
 226  */
 227 wxInputStream *wxURL::GetInputStream(void)
 228 {
 229   wxIPV4address addr;
 230   wxInputStream *the_i_stream = NULL;
 231
 232   if (!m_protocol)
 233     if (!ParseURL())
 234       return NULL;
 235
 236   if (!m_protocol) {
 237     m_error = wxURL_NOPROTO;
 238     return NULL;
 239   }
 240
 241   m_error = wxURL_NOERR;
 242   if (m_user != "") {
 243     m_protocol->SetUser(m_user);
 244     m_protocol->SetPassword(m_password);
 245   }
 246
 247   if (m_protoinfo->m_needhost) {
 248     if (!addr.Hostname(m_hostname)) {
 249       m_error = wxURL_NOHOST;
 250       return NULL;
 251     }
 252
 253     addr.Service(m_servname);
 254
 255     if (!m_protocol->Connect(addr, TRUE)) // Watcom needs the 2nd arg for some reason
 256     {
 257       m_error = wxURL_CONNERR;
 258       return NULL;
 259     }
 260   }
 261
 262   the_i_stream = m_protocol->GetInputStream(m_path);
 263   if (!the_i_stream) {
 264     m_error = wxURL_PROTOERR;
 265     return NULL;
 266   }
 267
 268   return the_i_stream;
 269 }
 270
 271 void wxURL::SetDefaultProxy(const wxString& url_proxy)
 272 {
 273   g_proxy->Close();
 274
 275   if (url_proxy.IsNull())
 276     return;
 277
 278   wxString tmp_str = url_proxy;
 279   int pos = tmp_str.Find(':');
 280   wxString hostname = tmp_str(0, pos),
 281            port = tmp_str(pos, tmp_str.Length()-pos);
 282   wxIPV4address addr;
 283
 284   addr.Hostname(hostname);
 285   addr.Service(port);
 286
 287   g_proxy->Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason
 288 }
 289
 290 void wxURL::SetProxy(const wxString& url_proxy)
 291 {
 292   if (url_proxy.IsNull()) {
 293     m_proxy.Close();
 294     return;
 295   }
 296
 297   CleanData();
 298
 299   wxString tmp_str;
 300   wxString hostname, port;
 301   int pos;
 302   wxIPV4address addr;
 303
 304   tmp_str = url_proxy;
 305   pos = tmp_str.Find(':');
 306   hostname = tmp_str(0, pos);
 307   port = tmp_str(pos, tmp_str.Length()-pos);
 308
 309   addr.Hostname(hostname);
 310   addr.Service(port);
 311
 312   m_proxy.Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason
 313
 314   m_protocol = &m_proxy;
 315   m_protoname = "proxy";
 316   m_path = url_proxy;
 317 }
 318
 319 #endif
 320   // wxUSE_SOCKETS