include/wx/protocol/protocol.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/protocol/protocol.h
   3 // Purpose:     Protocol base class
   4 // Author:      Guilhem Lavaux
   5 // Modified by:
   6 // Created:     10/07/1997
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1997, 1998 Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_PROTOCOL_PROTOCOL_H
  13 #define _WX_PROTOCOL_PROTOCOL_H
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_PROTOCOL
  18
  19 #include "wx/object.h"
  20 #include "wx/string.h"
  21 #include "wx/stream.h"
  22
  23 #if wxUSE_SOCKETS
  24     #include "wx/socket.h"
  25 #endif
  26
  27 class WXDLLIMPEXP_FWD_NET wxProtocolLog;
  28
  29 // ----------------------------------------------------------------------------
  30 // constants
  31 // ----------------------------------------------------------------------------
  32
  33 typedef enum
  34 {
  35     wxPROTO_NOERR = 0,
  36     wxPROTO_NETERR,
  37     wxPROTO_PROTERR,
  38     wxPROTO_CONNERR,
  39     wxPROTO_INVVAL,
  40     wxPROTO_NOHNDLR,
  41     wxPROTO_NOFILE,
  42     wxPROTO_ABRT,
  43     wxPROTO_RCNCT,
  44     wxPROTO_STREAMING
  45 } wxProtocolError;
  46
  47 // ----------------------------------------------------------------------------
  48 // wxProtocol: abstract base class for all protocols
  49 // ----------------------------------------------------------------------------
  50
  51 class WXDLLIMPEXP_NET wxProtocol
  52 #if wxUSE_SOCKETS
  53  : public wxSocketClient
  54 #else
  55  : public wxObject
  56 #endif
  57 {
  58 public:
  59     wxProtocol();
  60     virtual ~wxProtocol();
  61
  62 #if wxUSE_SOCKETS
  63     bool Reconnect();
  64     virtual bool Connect( const wxString& WXUNUSED(host) ) { return false; }
  65     virtual bool Connect( const wxSockAddress& addr, bool WXUNUSED(wait) = true)
  66         { return wxSocketClient::Connect(addr); }
  67
  68     // read a '\r\n' terminated line from the given socket and put it in
  69     // result (without the terminators)
  70     static wxProtocolError ReadLine(wxSocketBase *socket, wxString& result);
  71
  72     // read a line from this socket - this one can be overridden in the
  73     // derived classes if different line termination convention is to be used
  74     virtual wxProtocolError ReadLine(wxString& result);
  75 #endif // wxUSE_SOCKETS
  76
  77     virtual bool Abort() = 0;
  78     virtual wxInputStream *GetInputStream(const wxString& path) = 0;
  79     virtual wxString GetContentType() const = 0;
  80
  81     // the error code
  82     virtual wxProtocolError GetError() const { return m_lastError; }
  83
  84     void SetUser(const wxString& user) { m_username = user; }
  85     void SetPassword(const wxString& passwd) { m_password = passwd; }
  86
  87     virtual void SetDefaultTimeout(wxUint32 Value);
  88
  89     // override wxSocketBase::SetTimeout function to avoid that the internal
  90     // m_uiDefaultTimeout goes out-of-sync:
  91     virtual void SetTimeout(long seconds)
  92         { SetDefaultTimeout(seconds); }
  93
  94
  95     // logging support: each wxProtocol object may have the associated logger
  96     // (by default there is none) which is used to log network requests and
  97     // responses
  98
  99     // set the logger, deleting the old one and taking ownership of this one
 100     void SetLog(wxProtocolLog *log);
 101
 102     // return the current logger, may be NULL
 103     wxProtocolLog *GetLog() const { return m_log; }
 104
 105     // detach the existing logger without deleting it, the caller is
 106     // responsible for deleting the returned pointer if it's non-NULL
 107     wxProtocolLog *DetachLog()
 108     {
 109         wxProtocolLog * const log = m_log;
 110         m_log = NULL;
 111         return log;
 112     }
 113
 114     // these functions forward to the same functions with the same names in
 115     // wxProtocolLog if we have a valid logger and do nothing otherwise
 116     void LogRequest(const wxString& str);
 117     void LogResponse(const wxString& str);
 118
 119 protected:
 120     // the timeout associated with the protocol:
 121     wxUint32        m_uiDefaultTimeout;
 122
 123     wxString        m_username;
 124     wxString        m_password;
 125
 126     // this must be always updated by the derived classes!
 127     wxProtocolError m_lastError;
 128
 129 private:
 130     wxProtocolLog *m_log;
 131
 132     DECLARE_DYNAMIC_CLASS_NO_COPY(wxProtocol)
 133 };
 134
 135 // ----------------------------------------------------------------------------
 136 // macros for protocol classes
 137 // ----------------------------------------------------------------------------
 138
 139 #define DECLARE_PROTOCOL(class) \
 140 public: \
 141   static wxProtoInfo g_proto_##class;
 142
 143 #define IMPLEMENT_PROTOCOL(class, name, serv, host) \
 144 wxProtoInfo class::g_proto_##class(name, serv, host, CLASSINFO(class)); \
 145 bool wxProtocolUse##class = TRUE;
 146
 147 #define USE_PROTOCOL(class) \
 148     extern bool wxProtocolUse##class ; \
 149     static struct wxProtocolUserFor##class \
 150     { \
 151         wxProtocolUserFor##class() { wxProtocolUse##class = TRUE; } \
 152     } wxProtocolDoUse##class;
 153
 154 class WXDLLIMPEXP_NET wxProtoInfo : public wxObject
 155 {
 156 public:
 157     wxProtoInfo(const wxChar *name,
 158                 const wxChar *serv_name,
 159                 const bool need_host1,
 160                 wxClassInfo *info);
 161
 162 protected:
 163     wxProtoInfo *next;
 164     wxString m_protoname;
 165     wxString prefix;
 166     wxString m_servname;
 167     wxClassInfo *m_cinfo;
 168     bool m_needhost;
 169
 170     friend class wxURL;
 171
 172     DECLARE_DYNAMIC_CLASS(wxProtoInfo)
 173     wxDECLARE_NO_COPY_CLASS(wxProtoInfo);
 174 };
 175
 176 #endif // wxUSE_PROTOCOL
 177
 178 #endif // _WX_PROTOCOL_PROTOCOL_H