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