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 // --------- wxURL CONSTRUCTOR DESTRUCTOR -----------------------
  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   ParseURL();
  68 }
  69
  70 bool wxURL::ParseURL()
  71 {
  72   wxString last_url = m_url;
  73
  74   // Clean up
  75   CleanData();
  76
  77   // Extract protocol name
  78   if (!PrepProto(last_url)) {
  79     m_error = wxURL_SNTXERR;
  80     return FALSE;
  81   }
  82
  83   // Find and create the protocol object
  84   if (!FetchProtocol()) {
  85     m_error = wxURL_NOPROTO;
  86     return FALSE;
  87   }
  88
  89   // Do we need a host name ?
  90   if (m_protoinfo->m_needhost) {
  91     // Extract it
  92     if (!PrepHost(last_url)) {
  93       m_error = wxURL_SNTXERR;
  94       return FALSE;
  95     }
  96   }
  97
  98   // Extract full path
  99   if (!PrepPath(last_url)) {
 100     m_error = wxURL_NOPATH;
 101     return FALSE;
 102   }
 103
 104   m_error = wxURL_NOERR;
 105   return TRUE;
 106 }
 107
 108 void wxURL::CleanData()
 109 {
 110   if (m_protoname != _T("proxy"))
 111     delete m_protocol;
 112 }
 113
 114 wxURL::~wxURL()
 115 {
 116   CleanData();
 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 = temp_url(pos2+1, pos);
 163     if (!m_servname.IsNumber())
 164       return FALSE;
 165     temp_url = temp_url(0, pos2);
 166   }
 167
 168   // Retrieve user and password.
 169   pos2 = temp_url.Find('@');
 170   // Even if pos2 equals -1, this code is right.
 171   m_hostname = temp_url(pos2+1, temp_url.Length());
 172
 173   m_user = "";
 174   m_password = "";
 175
 176   if (pos2 == -1)
 177     return TRUE;
 178
 179   temp_url = temp_url(0, pos2);
 180   pos2 = temp_url.Find(':');
 181
 182   if (pos2 == -1)
 183     return FALSE;
 184
 185   m_user = temp_url(0, pos2);
 186   m_password = temp_url(pos2+1, url.Length());
 187
 188   return TRUE;
 189 }
 190
 191 bool wxURL::PrepPath(wxString& url)
 192 {
 193   if (url.Length() != 0)
 194     m_path = url;
 195   else
 196     m_path = "/";
 197   return TRUE;
 198 }
 199
 200 bool wxURL::FetchProtocol()
 201 {
 202   wxProtoInfo *info = g_protocols;
 203
 204   while (info) {
 205     if (m_protoname == info->m_protoname) {
 206       if (m_servname.IsNull())
 207         m_servname = info->m_servname;
 208
 209       m_protoinfo = info;
 210       m_protocol = (wxProtocol *)m_protoinfo->m_cinfo->CreateObject();
 211       return TRUE;
 212     }
 213     info = info->next;
 214   }
 215   return FALSE;
 216 }
 217
 218 // --------------------------------------------------------------
 219 // --------- wxURL get ------------------------------------------
 220 // --------------------------------------------------------------
 221
 222 wxInputStream *wxURL::GetInputStream(void)
 223 {
 224   wxIPV4address addr;
 225   wxInputStream *the_i_stream = NULL;
 226
 227   if (!m_protocol)
 228     if (!ParseURL())
 229       return NULL;
 230
 231   if (!m_protocol) {
 232     m_error = wxURL_NOPROTO;
 233     return NULL;
 234   }
 235
 236   m_error = wxURL_NOERR;
 237   if (m_user != _T("")) {
 238     m_protocol->SetUser(m_user);
 239     m_protocol->SetPassword(m_password);
 240   }
 241
 242   if (m_protoinfo->m_needhost) {
 243     if (!addr.Hostname(m_hostname)) {
 244       m_error = wxURL_NOHOST;
 245       return NULL;
 246     }
 247
 248     addr.Service(m_servname);
 249
 250     if (!m_protocol->Connect(addr, TRUE)) // Watcom needs the 2nd arg for some reason
 251     {
 252       m_error = wxURL_CONNERR;
 253       return NULL;
 254     }
 255   }
 256
 257   the_i_stream = m_protocol->GetInputStream(m_path);
 258   if (!the_i_stream) {
 259     m_error = wxURL_PROTOERR;
 260     return NULL;
 261   }
 262
 263   return the_i_stream;
 264 }
 265
 266 void wxURL::SetDefaultProxy(const wxString& url_proxy)
 267 {
 268   g_proxy->Close();
 269
 270   if (url_proxy.IsNull())
 271     return;
 272
 273   wxString tmp_str = url_proxy;
 274   int pos = tmp_str.Find(':');
 275   wxString hostname = tmp_str(0, pos),
 276            port = tmp_str(pos, tmp_str.Length()-pos);
 277   wxIPV4address addr;
 278
 279   addr.Hostname(hostname);
 280   addr.Service(port);
 281
 282   g_proxy->Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason
 283 }
 284
 285 void wxURL::SetProxy(const wxString& url_proxy)
 286 {
 287   if (url_proxy.IsNull()) {
 288     m_proxy.Close();
 289     return;
 290   }
 291
 292   CleanData();
 293
 294   wxString tmp_str;
 295   wxString hostname, port;
 296   int pos;
 297   wxIPV4address addr;
 298
 299   tmp_str = url_proxy;
 300   pos = tmp_str.Find(':');
 301   hostname = tmp_str(0, pos);
 302   port = tmp_str(pos, tmp_str.Length()-pos);
 303
 304   addr.Hostname(hostname);
 305   addr.Service(port);
 306
 307   m_proxy.Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason
 308
 309   m_protocol = &m_proxy;
 310   m_protoname = "proxy";
 311   m_path = url_proxy;
 312 }
 313
 314 wxString wxURL::ConvertToValidURI(const wxString& uri)
 315 {
 316   wxString out_str;
 317   wxString hexa_code;
 318   size_t i;
 319
 320   for (i=0;i<uri.Len();i++) {
 321     wxChar c = uri.GetChar(i);
 322
 323     if (!isalpha(c) && c != _T('.') && c != _T('+') && c != _T('.') &&
 324                        c != _T('/')) {
 325       hexa_code.Printf(_T("%%%02X"), c);
 326       out_str += hexa_code;
 327     } else
 328       out_str += c;
 329   }
 330
 331   return out_str;
 332 }
 333
 334 #endif
 335   // wxUSE_SOCKETS