| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/common/protocol.cpp |
| 3 | // Purpose: Implement protocol base class |
| 4 | // Author: Guilhem Lavaux |
| 5 | // Modified by: |
| 6 | // Created: 07/07/1997 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 1997, 1998 Guilhem Lavaux |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // For compilers that support precompilation, includes "wx.h". |
| 13 | #include "wx/wxprec.h" |
| 14 | |
| 15 | #ifdef __BORLANDC__ |
| 16 | #pragma hdrstop |
| 17 | #endif |
| 18 | |
| 19 | #if wxUSE_PROTOCOL |
| 20 | |
| 21 | #include "wx/protocol/protocol.h" |
| 22 | |
| 23 | #ifndef WX_PRECOMP |
| 24 | #include "wx/module.h" |
| 25 | #endif |
| 26 | |
| 27 | #include "wx/url.h" |
| 28 | |
| 29 | #include <stdlib.h> |
| 30 | |
| 31 | ///////////////////////////////////////////////////////////////// |
| 32 | // wxProtoInfo |
| 33 | ///////////////////////////////////////////////////////////////// |
| 34 | |
| 35 | /* |
| 36 | * -------------------------------------------------------------- |
| 37 | * --------- wxProtoInfo CONSTRUCTOR ---------------------------- |
| 38 | * -------------------------------------------------------------- |
| 39 | */ |
| 40 | |
| 41 | wxProtoInfo::wxProtoInfo(const wxChar *name, const wxChar *serv, |
| 42 | const bool need_host1, wxClassInfo *info) |
| 43 | : m_protoname(name), |
| 44 | m_servname(serv) |
| 45 | { |
| 46 | m_cinfo = info; |
| 47 | m_needhost = need_host1; |
| 48 | #if wxUSE_URL |
| 49 | next = wxURL::ms_protocols; |
| 50 | wxURL::ms_protocols = this; |
| 51 | #else |
| 52 | next = NULL; |
| 53 | #endif |
| 54 | } |
| 55 | |
| 56 | ///////////////////////////////////////////////////////////////// |
| 57 | // wxProtocol /////////////////////////////////////////////////// |
| 58 | ///////////////////////////////////////////////////////////////// |
| 59 | |
| 60 | #if wxUSE_SOCKETS |
| 61 | IMPLEMENT_ABSTRACT_CLASS(wxProtocol, wxSocketClient) |
| 62 | #else |
| 63 | IMPLEMENT_ABSTRACT_CLASS(wxProtocol, wxObject) |
| 64 | #endif |
| 65 | |
| 66 | wxProtocol::wxProtocol() |
| 67 | #if wxUSE_SOCKETS |
| 68 | : wxSocketClient() |
| 69 | #endif |
| 70 | { |
| 71 | } |
| 72 | |
| 73 | #if wxUSE_SOCKETS |
| 74 | bool wxProtocol::Reconnect() |
| 75 | { |
| 76 | wxIPV4address addr; |
| 77 | |
| 78 | if (!GetPeer(addr)) |
| 79 | { |
| 80 | Close(); |
| 81 | return false; |
| 82 | } |
| 83 | |
| 84 | if (!Close()) |
| 85 | return false; |
| 86 | |
| 87 | if (!Connect(addr)) |
| 88 | return false; |
| 89 | |
| 90 | return true; |
| 91 | } |
| 92 | |
| 93 | // ---------------------------------------------------------------------------- |
| 94 | // Read a line from socket |
| 95 | // ---------------------------------------------------------------------------- |
| 96 | |
| 97 | /* static */ |
| 98 | wxProtocolError wxProtocol::ReadLine(wxSocketBase *sock, wxString& result) |
| 99 | { |
| 100 | static const int LINE_BUF = 4095; |
| 101 | |
| 102 | result.clear(); |
| 103 | |
| 104 | wxCharBuffer buf(LINE_BUF); |
| 105 | char *pBuf = buf.data(); |
| 106 | while ( sock->WaitForRead() ) |
| 107 | { |
| 108 | // peek at the socket to see if there is a CRLF |
| 109 | sock->Peek(pBuf, LINE_BUF); |
| 110 | |
| 111 | size_t nRead = sock->LastCount(); |
| 112 | if ( !nRead && sock->Error() ) |
| 113 | return wxPROTO_NETERR; |
| 114 | |
| 115 | // look for "\r\n" paying attention to a special case: "\r\n" could |
| 116 | // have been split by buffer boundary, so check also for \r at the end |
| 117 | // of the last chunk and \n at the beginning of this one |
| 118 | pBuf[nRead] = '\0'; |
| 119 | const char *eol = strchr(pBuf, '\n'); |
| 120 | |
| 121 | // if we found '\n', is there a '\r' as well? |
| 122 | if ( eol ) |
| 123 | { |
| 124 | if ( eol == pBuf ) |
| 125 | { |
| 126 | // check for case of "\r\n" being split |
| 127 | if ( result.empty() || result.Last() != _T('\r') ) |
| 128 | { |
| 129 | // ignore the stray '\n' |
| 130 | eol = NULL; |
| 131 | } |
| 132 | //else: ok, got real EOL |
| 133 | |
| 134 | // read just this '\n' and restart |
| 135 | nRead = 1; |
| 136 | } |
| 137 | else // '\n' in the middle of the buffer |
| 138 | { |
| 139 | // in any case, read everything up to and including '\n' |
| 140 | nRead = eol - pBuf + 1; |
| 141 | |
| 142 | if ( eol[-1] != '\r' ) |
| 143 | { |
| 144 | // as above, simply ignore stray '\n' |
| 145 | eol = NULL; |
| 146 | } |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | sock->Read(pBuf, nRead); |
| 151 | if ( sock->LastCount() != nRead ) |
| 152 | return wxPROTO_NETERR; |
| 153 | |
| 154 | pBuf[nRead] = '\0'; |
| 155 | result += wxString::FromAscii(pBuf); |
| 156 | |
| 157 | if ( eol ) |
| 158 | { |
| 159 | // remove trailing "\r\n" |
| 160 | result.RemoveLast(2); |
| 161 | |
| 162 | return wxPROTO_NOERR; |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | return wxPROTO_NETERR; |
| 167 | } |
| 168 | |
| 169 | wxProtocolError wxProtocol::ReadLine(wxString& result) |
| 170 | { |
| 171 | return ReadLine(this, result); |
| 172 | } |
| 173 | |
| 174 | #endif // wxUSE_SOCKETS |
| 175 | |
| 176 | #endif // wxUSE_PROTOCOL |