added wxUSE_IMAGE; added write-only wxXPMHandler

[wxWidgets.git] / src / common / url.cpp

diff --git a/src/common/url.cpp b/src/common/url.cpp
index 8c7ddb27d2dd2775ee970f2c46221db264c75f24..eae17c35cae21795c0b4afd983e4e72790bc5829 100644 (file)
--- a/src/common/url.cpp
+++ b/src/common/url.cpp
@@ -20,86 +20,125 @@
 #pragma hdrstop
 #endif
 
 #pragma hdrstop
 #endif
 

-#ifndef WX_PRECOMP
-#endif
-

 #include <string.h>
 #include <ctype.h>
 
 #include <string.h>
 #include <ctype.h>
 

-// wxWindows headers
-#include <wx/string.h>
-#include <wx/list.h>
-#include <wx/utils.h>
-
-// wxSocket header
+#include "wx/string.h"
+#include "wx/list.h"
+#include "wx/utils.h"
+#include "wx/module.h"

 #include "wx/url.h"
 
 #include "wx/url.h"
 

-#if !USE_SHARED_LIBRARY

 IMPLEMENT_CLASS(wxProtoInfo, wxObject)
 IMPLEMENT_CLASS(wxURL, wxObject)
 IMPLEMENT_CLASS(wxProtoInfo, wxObject)
 IMPLEMENT_CLASS(wxURL, wxObject)

-#endif

 
 // Protocols list
 
 // Protocols list

-wxProtoInfo *wxURL::g_protocols = NULL;
-wxHTTP *wxURL::g_proxy;
+wxProtoInfo *wxURL::ms_protocols = NULL;
+
+// Enforce linking of protocol classes:
+USE_PROTOCOL(wxHTTP)
+USE_PROTOCOL(wxFTP)
+USE_PROTOCOL(wxFileProto)
+
+#if wxUSE_SOCKETS
+    wxHTTP *wxURL::ms_proxyDefault = NULL;
+    bool wxURL::ms_useDefaultProxy = FALSE;
+#endif

 
 

-/////////////////////////////////////////////////////////////////
-// wxURL ////////////////////////////////////////////////////////
-/////////////////////////////////////////////////////////////////
+// --------------------------------------------------------------
+// wxURL
+// --------------------------------------------------------------

 
 

-/*
- * --------------------------------------------------------------
- * --------- wxURL CONSTRUCTOR DESTRUCTOR -----------------------
- * --------------------------------------------------------------
- */
+// --------------------------------------------------------------
+// --------- wxURL CONSTRUCTOR DESTRUCTOR -----------------------
+// --------------------------------------------------------------

 
 wxURL::wxURL(const wxString& url)
 {
 
 wxURL::wxURL(const wxString& url)
 {

-  m_protocol = NULL;
-  if (g_proxy->IsConnected()) {
-    m_protocol = g_proxy;
-    m_protoname = "proxy";
-    m_path = url;
-    return;
-  }
-  m_url = url;
-  m_error = wxURL_NOERR;
-  ParseURL();
+    m_protocol = NULL;
+    m_error = wxURL_NOERR;
+    m_url = url;
+
+#if wxUSE_SOCKETS
+    if ( ms_useDefaultProxy && !ms_proxyDefault )
+    {
+        SetDefaultProxy(getenv("HTTP_PROXY"));
+
+        if ( !ms_proxyDefault )
+        {
+            // don't try again
+            ms_useDefaultProxy = FALSE;
+        }
+    }
+
+    m_useProxy = ms_proxyDefault != NULL;
+    m_proxy = ms_proxyDefault;
+#endif // wxUSE_SOCKETS
+
+    ParseURL();

 }
 
 bool wxURL::ParseURL()
 {
   wxString last_url = m_url;
 
 }
 
 bool wxURL::ParseURL()
 {
   wxString last_url = m_url;
 

-  // Clean up
-  CleanData();
+  // If the URL was already parsed (m_protocol != NULL), pass this section.
+  if (!m_protocol)
+  {
+    // Clean up
+    CleanData();

 
 

-  // Extract protocol name
-  if (!PrepProto(last_url)) {
-    m_error = wxURL_SNTXERR;
-    return FALSE;
-  }
+    // Extract protocol name
+    if (!PrepProto(last_url))
+    {
+      m_error = wxURL_SNTXERR;
+      return FALSE;
+    }

 
 

-  // Find and create the protocol object
-  if (!FetchProtocol()) {
-    m_error = wxURL_NOPROTO;
-    return FALSE;
-  }
+    // Find and create the protocol object
+    if (!FetchProtocol())
+    {
+      m_error = wxURL_NOPROTO;
+      return FALSE;
+    }

 
 

-  // Do we need a host name ?
-  if (m_protoinfo->m_needhost) {
-    // Extract it
-    if (!PrepHost(last_url)) {
-      m_error = wxURL_SNTXERR;
+    // Do we need a host name ?
+    if (m_protoinfo->m_needhost)
+    {
+      // Extract it
+      if (!PrepHost(last_url))
+      {
+        m_error = wxURL_SNTXERR;
+        return FALSE;
+      }
+    }
+
+    // Extract full path
+    if (!PrepPath(last_url))
+    {
+      m_error = wxURL_NOPATH;

       return FALSE;
     }
   }
       return FALSE;
     }
   }

+  // URL parse finished.

 
 

-  // Extract full path
-  if (!PrepPath(last_url)) {
-    m_error = wxURL_NOPATH;
-    return FALSE;
+#if wxUSE_SOCKETS
+  if (m_useProxy)
+  {
+    // We destroy the newly created protocol.
+    CleanData();
+
+    // Third, we rebuild the URL.
+    m_url = m_protoname + wxT(":");
+    if (m_protoinfo->m_needhost)
+      m_url = m_url + wxT("//") + m_hostname;
+
+    m_url += m_path;
+
+    // We initialize specific variables.
+    m_protocol = m_proxy; // FIXME: we should clone the protocol

   }
   }

+#endif

 
   m_error = wxURL_NOERR;
   return TRUE;
 
   m_error = wxURL_NOERR;
   return TRUE;


@@ -107,26 +146,31 @@ bool wxURL::ParseURL()
 
 void wxURL::CleanData()
 {
 
 void wxURL::CleanData()
 {

-  if (m_protoname != "proxy")
+#if wxUSE_SOCKETS
+  if (!m_useProxy)
+#endif

     delete m_protocol;
 }
 
 wxURL::~wxURL()
 {
   CleanData();
     delete m_protocol;
 }
 
 wxURL::~wxURL()
 {
   CleanData();

+#if wxUSE_SOCKETS
+  if (m_proxy && m_proxy != ms_proxyDefault)
+    delete m_proxy;
+#endif

 }
 
 }
 

-/*
- * --------------------------------------------------------------
- * --------- wxURL urls decoders --------------------------------
- * --------------------------------------------------------------
- */
+// --------------------------------------------------------------
+// --------- wxURL urls decoders --------------------------------
+// --------------------------------------------------------------
+

 bool wxURL::PrepProto(wxString& url)
 {
   int pos;
 
   // Find end
 bool wxURL::PrepProto(wxString& url)
 {
   int pos;
 
   // Find end

-  pos = url.Find(':');
+  pos = url.Find(wxT(':'));

   if (pos == -1)
     return FALSE;
 
   if (pos == -1)
     return FALSE;
 


@@ -142,12 +186,12 @@ bool wxURL::PrepHost(wxString& url)
   wxString temp_url;
   int pos, pos2;
 
   wxString temp_url;
   int pos, pos2;
 

-  if ((url.GetChar(0) != '/') || (url.GetChar(1) != '/'))
+  if ((url.GetChar(0) != wxT('/')) || (url.GetChar(1) != wxT('/')))

     return FALSE;
 
   url = url(2, url.Length());
 
     return FALSE;
 
   url = url(2, url.Length());
 

-  pos = url.Find('/');
+  pos = url.Find(wxT('/'));

   if (pos == -1)
     pos = url.Length();
 
   if (pos == -1)
     pos = url.Length();
 


@@ -155,11 +199,12 @@ bool wxURL::PrepHost(wxString& url)
     return FALSE;
 
   temp_url = url(0, pos);
     return FALSE;
 
   temp_url = url(0, pos);

-  url = url(url.Find('/'), url.Length());
+  url = url(url.Find(wxT('/')), url.Length());

 
   // Retrieve service number
 
   // Retrieve service number

-  pos2 = temp_url.Find(':', TRUE);
-  if (pos2 != -1 && pos2 < pos) {
+  pos2 = temp_url.Find(wxT(':'), TRUE);
+  if (pos2 != -1 && pos2 < pos)
+  {

     m_servname = temp_url(pos2+1, pos);
     if (!m_servname.IsNumber())
       return FALSE;
     m_servname = temp_url(pos2+1, pos);
     if (!m_servname.IsNumber())
       return FALSE;


@@ -167,18 +212,18 @@ bool wxURL::PrepHost(wxString& url)
   }
 
   // Retrieve user and password.
   }
 
   // Retrieve user and password.

-  pos2 = temp_url.Find('@');
+  pos2 = temp_url.Find(wxT('@'));

   // Even if pos2 equals -1, this code is right.
   m_hostname = temp_url(pos2+1, temp_url.Length());
 
   // Even if pos2 equals -1, this code is right.
   m_hostname = temp_url(pos2+1, temp_url.Length());
 

-  m_user = "";
-  m_password = "";
+  m_user = wxT("");
+  m_password = wxT("");

 
   if (pos2 == -1)
     return TRUE;
 
   temp_url = temp_url(0, pos2);
 
   if (pos2 == -1)
     return TRUE;
 
   temp_url = temp_url(0, pos2);

-  pos2 = temp_url.Find(':');
+  pos2 = temp_url.Find(wxT(':'));

 
   if (pos2 == -1)
     return FALSE;
 
   if (pos2 == -1)
     return FALSE;


@@ -192,24 +237,25 @@ bool wxURL::PrepHost(wxString& url)
 bool wxURL::PrepPath(wxString& url)
 {
   if (url.Length() != 0)
 bool wxURL::PrepPath(wxString& url)
 {
   if (url.Length() != 0)

-    m_path = url;
+    m_path = ConvertToValidURI(url);

   else
   else

-    m_path = "/";
+    m_path = wxT("/");

   return TRUE;
 }
 
 bool wxURL::FetchProtocol()
 {
   return TRUE;
 }
 
 bool wxURL::FetchProtocol()
 {

-  wxProtoInfo *info = g_protocols;
+  wxProtoInfo *info = ms_protocols;

 
 

-  while (info) {
-    if (m_protoname == info->m_protoname) {
+  while (info)
+  {
+    if (m_protoname == info->m_protoname)
+    {

       if (m_servname.IsNull())
         m_servname = info->m_servname;
 
       m_protoinfo = info;
       m_protocol = (wxProtocol *)m_protoinfo->m_cinfo->CreateObject();
       if (m_servname.IsNull())
         m_servname = info->m_servname;
 
       m_protoinfo = info;
       m_protocol = (wxProtocol *)m_protoinfo->m_cinfo->CreateObject();

-      wxSocketHandler::Master().Register(m_protocol);

       return TRUE;
     }
     info = info->next;
       return TRUE;
     }
     info = info->next;


@@ -217,33 +263,35 @@ bool wxURL::FetchProtocol()
   return FALSE;
 }
 
   return FALSE;
 }
 

-/*
- * --------------------------------------------------------------
- * --------- wxURL get ------------------------------------------
- * --------------------------------------------------------------
- */
-wxInputStream *wxURL::GetInputStream(void)
+// --------------------------------------------------------------
+// --------- wxURL get ------------------------------------------
+// --------------------------------------------------------------
+
+wxInputStream *wxURL::GetInputStream()

 {
 {

-  wxIPV4address addr;

   wxInputStream *the_i_stream = NULL;
 
   if (!m_protocol)
   wxInputStream *the_i_stream = NULL;
 
   if (!m_protocol)

-    if (!ParseURL())
-      return NULL;
-
-  if (!m_protocol) {
+  {

     m_error = wxURL_NOPROTO;
     return NULL;
   }
 
   m_error = wxURL_NOERR;
     m_error = wxURL_NOPROTO;
     return NULL;
   }
 
   m_error = wxURL_NOERR;

-  if (m_user != "") {
+  if (m_user != wxT(""))
+  {

     m_protocol->SetUser(m_user);
     m_protocol->SetPassword(m_password);
   }
 
     m_protocol->SetUser(m_user);
     m_protocol->SetPassword(m_password);
   }
 

-  if (m_protoinfo->m_needhost) {
-    if (!addr.Hostname(m_hostname)) {
+#if wxUSE_SOCKETS
+    wxIPV4address addr;
+
+  // m_protoinfo is NULL when we use a proxy
+  if (!m_useProxy && m_protoinfo->m_needhost)
+  {
+    if (!addr.Hostname(m_hostname))
+    {

       m_error = wxURL_NOHOST;
       return NULL;
     }
       m_error = wxURL_NOHOST;
       return NULL;
     }


@@ -256,9 +304,16 @@ wxInputStream *wxURL::GetInputStream(void)
       return NULL;
     }
   }
       return NULL;
     }
   }

+#endif
+
+  // When we use a proxy, we have to pass the whole URL to it.
+  if (m_useProxy)
+    the_i_stream = m_protocol->GetInputStream(m_url);
+  else
+    the_i_stream = m_protocol->GetInputStream(m_path);

 
 

-  the_i_stream = m_protocol->GetInputStream(m_path);
-  if (!the_i_stream) {
+  if (!the_i_stream)
+  {

     m_error = wxURL_PROTOERR;
     return NULL;
   }
     m_error = wxURL_PROTOERR;
     return NULL;
   }


@@ -266,50 +321,202 @@ wxInputStream *wxURL::GetInputStream(void)
   return the_i_stream;
 }
 
   return the_i_stream;
 }
 

+#if wxUSE_SOCKETS

 void wxURL::SetDefaultProxy(const wxString& url_proxy)
 {
 void wxURL::SetDefaultProxy(const wxString& url_proxy)
 {

-  g_proxy->Close();
+  if ( !url_proxy )
+  {
+      if ( ms_proxyDefault )
+      {
+          ms_proxyDefault->Close();
+          delete ms_proxyDefault;
+          ms_proxyDefault = NULL;
+      }
+  }
+  else
+  {
+      wxString tmp_str = url_proxy;
+      int pos = tmp_str.Find(wxT(':'));
+      if (pos == -1)
+          return;
+
+      wxString hostname = tmp_str(0, pos),
+      port = tmp_str(pos+1, tmp_str.Length()-pos);
+      wxIPV4address addr;
+
+      if (!addr.Hostname(hostname))
+          return;
+      if (!addr.Service(port))
+          return;
+
+      if (ms_proxyDefault)
+          // Finally, when all is right, we connect the new proxy.
+          ms_proxyDefault->Close();
+      else
+          ms_proxyDefault = new wxHTTP();
+      ms_proxyDefault->Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason
+  }
+}

 
 

-  if (url_proxy.IsNull())
-    return;
+void wxURL::SetProxy(const wxString& url_proxy)
+{
+    if ( !url_proxy )
+    {
+        if ( m_proxy && m_proxy != ms_proxyDefault )
+        {
+            m_proxy->Close();
+            delete m_proxy;
+        }

 
 

-  wxString tmp_str = url_proxy;
-  int pos = tmp_str.Find(':');
-  wxString hostname = tmp_str(0, pos),
-           port = tmp_str(pos, tmp_str.Length()-pos);
-  wxIPV4address addr;
+        m_useProxy = FALSE;
+    }
+    else
+    {
+        wxString tmp_str;
+        wxString hostname, port;
+        int pos;
+        wxIPV4address addr;
+
+        tmp_str = url_proxy;
+        pos = tmp_str.Find(wxT(':'));
+        // This is an invalid proxy name.
+        if (pos == -1)
+            return;
+
+        hostname = tmp_str(0, pos);
+        port = tmp_str(pos, tmp_str.Length()-pos);
+
+        addr.Hostname(hostname);
+        addr.Service(port);
+
+        // Finally, create the whole stuff.
+        if (m_proxy && m_proxy != ms_proxyDefault)
+            delete m_proxy;
+        m_proxy = new wxHTTP();
+        m_proxy->Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason
+
+        CleanData();
+        // Reparse url.
+        m_useProxy = TRUE;
+        ParseURL();
+    }
+}
+#endif // wxUSE_SOCKETS

 
 

-  addr.Hostname(hostname);
-  addr.Service(port);
-  
-  g_proxy->Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason
+wxString wxURL::ConvertToValidURI(const wxString& uri, const wxChar* delims)
+{
+  wxString out_str;
+  wxString hexa_code;
+  size_t i;
+
+  for (i = 0; i < uri.Len(); i++)
+  {
+    wxChar c = uri.GetChar(i);
+
+    if (c == wxT(' '))
+    {
+      // GRG, Apr/2000: changed to "%20" instead of '+'
+
+      out_str += wxT("%20");
+    }
+    else
+    {
+      // GRG, Apr/2000: modified according to the URI definition (RFC 2396)
+      // 
+      // - Alphanumeric characters are never escaped
+      // - Unreserved marks are never escaped
+      // - Delimiters must be escaped if they appear within a component
+      //     but not if they are used to separate components. Here we have
+      //     no clear way to distinguish between these two cases, so they
+      //     are escaped unless they are passed in the 'delims' parameter
+      //     (allowed delimiters).
+
+      static const wxChar marks[] = wxT("-_.!~*()'");
+
+      if ( !wxIsalnum(c) && !wxStrchr(marks, c) && !wxStrchr(delims, c) )
+      {
+        hexa_code.Printf(wxT("%%%02X"), c);
+        out_str += hexa_code;
+      }
+      else
+      {
+        out_str += c;
+      }
+    }
+  }
+
+  return out_str;

 }
 
 }
 

-void wxURL::SetProxy(const wxString& url_proxy)
+wxString wxURL::ConvertFromURI(const wxString& uri)

 {
 {

-  if (url_proxy.IsNull()) {
-    m_proxy.Close();
-    return;
+  wxString new_uri;
+
+  size_t i = 0;
+  while (i < uri.Len())
+  {
+    int code;
+    if (uri[i] == wxT('%'))
+    {
+      i++;
+      if (uri[i] >= wxT('A') && uri[i] <= wxT('F'))
+        code = (uri[i] - wxT('A') + 10) * 16;
+      else
+        code = (uri[i] - wxT('0')) * 16;
+
+      i++;
+      if (uri[i] >= wxT('A') && uri[i] <= wxT('F'))
+        code += (uri[i] - wxT('A')) + 10;
+      else
+        code += (uri[i] - wxT('0'));
+
+      i++;
+      new_uri += (wxChar)code;
+      continue;
+    }
+    new_uri += uri[i];
+    i++;

   }
   }

+  return new_uri;
+}

 
 

-  CleanData();
+// ----------------------------------------------------------------------
+// A module which deletes the default proxy if we created it
+// ----------------------------------------------------------------------

 
 

-  wxString tmp_str;
-  wxString hostname, port;
-  int pos;
-  wxIPV4address addr;
+#if wxUSE_SOCKETS

 
 

-  tmp_str = url_proxy;
-  pos = tmp_str.Find(':');
-  hostname = tmp_str(0, pos);
-  port = tmp_str(pos, tmp_str.Length()-pos);
+class wxURLModule : public wxModule
+{
+public:
+    virtual bool OnInit();
+    virtual void OnExit();
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxURLModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxURLModule, wxModule)

 
 

-  addr.Hostname(hostname);
-  addr.Service(port);
+bool wxURLModule::OnInit()
+{
+    // env var HTTP_PROXY contains the address of the default proxy to use if
+    // set, but don't try to create this proxy right now because it will slow
+    // down the program startup (especially if there is no DNS server
+    // available, in which case it may take up to 1 minute)

 
 

-  m_proxy.Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason
+    if ( getenv("HTTP_PROXY") )
+    {
+        wxURL::ms_useDefaultProxy = TRUE;
+    }

 
 

-  m_protocol = &m_proxy;
-  m_protoname = "proxy";
-  m_path = url_proxy;
+    return TRUE;

 }
 }

+
+void wxURLModule::OnExit()
+{
+    delete wxURL::ms_proxyDefault;
+    wxURL::ms_proxyDefault = NULL;
+}
+
+#endif // wxUSE_SOCKETS