X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a62848fdba49396eba4f52c037d2dc82130274b4..02a525b385836d41f63e3bbebec869c7b8249026:/src/common/ftp.cpp diff --git a/src/common/ftp.cpp b/src/common/ftp.cpp index fbb119d4de..dbc0669ab5 100644 --- a/src/common/ftp.cpp +++ b/src/common/ftp.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: ftp.cpp +// Name: common/ftp.cpp // Purpose: FTP protocol // Author: Guilhem Lavaux // Modified by: Mark Johnson, wxWindows@mj10777.de @@ -7,9 +7,11 @@ // Vadim Zeitlin (numerous fixes and rewrites to all part of the // code, support ASCII/Binary modes, better error reporting, more // robust Abort(), support for arbitrary FTP commands, ...) +// Randall Fox (support for active mode) // Created: 07/07/1997 // RCS-ID: $Id$ // Copyright: (c) 1997, 1998 Guilhem Lavaux +// (c) 1998-2004 wxWidgets team // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -90,15 +92,21 @@ wxFTP::wxFTP() SetNotify(0); SetFlags(wxSOCKET_NONE); + m_bPassive = true; + SetDefaultTimeout(60); // Default is Sixty Seconds + m_bEncounteredError = false; } wxFTP::~wxFTP() { if ( m_streaming ) { + // if we are streaming, this will issue + // an FTP ABORT command, to tell the server we are aborting (void)Abort(); } + // now this issues a "QUIT" command to tell the server we are Close(); } @@ -228,6 +236,11 @@ char wxFTP::SendCommand(const wxString& command) char wxFTP::GetResult() { + // if we've already had a read or write timeout error, the connection is + // probably toast, so don't bother, it just wastes the users time + if ( m_bEncounteredError ) + return 0; + wxString code; // m_lastResult will contain the entire server response, possibly on @@ -247,9 +260,12 @@ char wxFTP::GetResult() while ( !endOfReply && !badReply ) { wxString line; - m_lastError = ReadLine(line); + m_lastError = ReadLine(this,line); if ( m_lastError ) + { + m_bEncounteredError = true; return 0; + } if ( !m_lastResult.empty() ) { @@ -494,36 +510,43 @@ public: : wxSocketInputStream(*sock) { m_ftp = ftp; - - // FIXME make the timeout configurable - - // set a shorter than default timeout - m_i_socket->SetTimeout(60); // 1 minute + // socket timeout automatically set in GetPort function } - size_t GetSize() const { return m_ftpsize; } - virtual ~wxInputFTPStream() { - delete m_i_socket; + delete m_i_socket; // keep at top - if ( IsOk() ) - { - // wait for "226 transfer completed" - m_ftp->CheckResult('2'); + // when checking the result, the stream will + // almost always show an error, even if the file was + // properly transfered, thus, lets just grab the result - m_ftp->m_streaming = false; + // we are looking for "226 transfer completed" + char code = m_ftp->GetResult(); + if ('2' == code) + { + // it was a good transfer. + // we're done! + m_ftp->m_streaming = false; + return; } - else + // did we timeout? + if (0 == code) { + // the connection is probably toast. issue an abort, and + // then a close. there won't be any more waiting + // for this connection m_ftp->Abort(); + m_ftp->Close(); + return; } - - // delete m_i_socket; // moved to top of destructor to accomodate wu-FTPd >= 2.6.0 + // There was a problem with the transfer and the server + // has acknowledged it. If we issue an "ABORT" now, the user + // would get the "226" for the abort and think the xfer was + // complete, thus, don't do anything here, just return } wxFTP *m_ftp; - size_t m_ftpsize; DECLARE_NO_COPY_CLASS(wxInputFTPStream) }; @@ -545,7 +568,7 @@ public: delete m_o_socket; // read this reply - m_ftp->CheckResult('2'); + m_ftp->GetResult(); // save result so user can get to it m_ftp->m_streaming = false; } @@ -564,26 +587,130 @@ public: DECLARE_NO_COPY_CLASS(wxOutputFTPStream) }; -wxSocketClient *wxFTP::GetPort() +void wxFTP::SetDefaultTimeout(wxUint32 Value) { - int a[6]; + m_uiDefaultTimeout = Value; + SetTimeout(Value); // sets it for this socket +} - if ( !DoSimpleCommand(_T("PASV")) ) + +wxSocketBase *wxFTP::GetPort() +{ + /* + PASSIVE: Client sends a "PASV" to the server. The server responds with + an address and port number which it will be listening on. Then + the client connects to the server at the specified address and + port. + + ACTIVE: Client sends the server a PORT command which includes an + address and port number which the client will be listening on. + The server then connects to the client at that address and + port. + */ + + wxSocketBase *socket = m_bPassive ? GetPassivePort() : GetActivePort(); + if ( !socket ) + { + m_bEncounteredError = true; + return NULL; + } + + // Now set the time for the new socket to the default or user selected + // timeout period + socket->SetTimeout(m_uiDefaultTimeout); + + return socket; +} + +wxSocketBase *wxFTP::AcceptIfActive(wxSocketBase *sock) +{ + if ( m_bPassive ) + return sock; + + // now wait for a connection from server + wxSocketServer *sockSrv = (wxSocketServer *)sock; + if ( !sockSrv->WaitForAccept() ) { - wxLogError(_("The FTP server doesn't support passive mode.")); + m_lastError = wxPROTO_CONNERR; + wxLogError(_("Timeout while waiting for FTP server to connect, try passive mode.")); + delete sock; + sock = NULL; + } + else + { + sock = sockSrv->Accept(true); + delete sockSrv; + } + + return sock; +} + +wxString wxFTP::GetPortCmdArgument(wxIPV4address addrLocal, + wxIPV4address addrNew) +{ + // Just fills in the return value with the local IP + // address of the current socket. Also it fill in the + // PORT which the client will be listening on + wxString addrIP = addrLocal.IPAddress(); + int portNew = addrNew.Service(); + + // We need to break the PORT number in bytes + addrIP.Replace(_T("."), _T(",")); + addrIP << _T(',') + << wxString::Format(_T("%d"), portNew >> 8) << _T(',') + << wxString::Format(_T("%d"), portNew & 0xff); + + // Now we have a value like "10,0,0,1,5,23" + return addrIP; +} + +wxSocketBase *wxFTP::GetActivePort() +{ + // we need an address to listen on + wxIPV4address addrNew, addrLocal; + GetLocal(addrLocal); + addrNew.AnyAddress(); + addrNew.Service(0); // pick an open port number. + + wxSocketServer *sockSrv = new wxSocketServer(addrNew); + if (!sockSrv->Ok()) + { + // We use Ok() here to see if everything is ok + m_lastError = wxPROTO_PROTERR; + delete sockSrv; return NULL; } - const wxChar *addrStart = wxStrchr(m_lastResult, _T('(')); - if ( !addrStart ) + //gets the new address, actually it is just the port number + sockSrv->GetLocal(addrNew); + + // Now we create the argument of the PORT command, we send in both + // addresses because the addrNew has an IP of "0.0.0.0", so we need the + // value in addrLocal + wxString port = GetPortCmdArgument(addrLocal, addrNew); + if ( !DoSimpleCommand(_T("PORT "), port) ) { m_lastError = wxPROTO_PROTERR; + delete sockSrv; + wxLogError(_("The FTP server doesn't support the PORT command.")); + return NULL; + } + sockSrv->Notify(false); // Don't send any events + return sockSrv; +} + +wxSocketBase *wxFTP::GetPassivePort() +{ + if ( !DoSimpleCommand(_T("PASV")) ) + { + wxLogError(_("The FTP server doesn't support passive mode.")); return NULL; } - const wxChar *addrEnd = wxStrchr(addrStart, _T(')')); + const wxChar *addrStart = wxStrchr(m_lastResult, _T('(')); + const wxChar *addrEnd = addrStart ? wxStrchr(addrStart, _T(')')) : NULL; if ( !addrEnd ) { m_lastError = wxPROTO_PROTERR; @@ -591,8 +718,9 @@ wxSocketClient *wxFTP::GetPort() return NULL; } + // get the port number and address + int a[6]; wxString straddr(addrStart + 1, addrEnd); - wxSscanf(straddr, wxT("%d,%d,%d,%d,%d,%d"), &a[2],&a[3],&a[4],&a[5],&a[0],&a[1]); @@ -632,13 +760,10 @@ bool wxFTP::Abort() wxInputStream *wxFTP::GetInputStream(const wxString& path) { - int pos_size; - wxInputFTPStream *in_stream; - if ( ( m_currentTransfermode == NONE ) && !SetTransferMode(BINARY) ) return NULL; - wxSocketClient *sock = GetPort(); + wxSocketBase *sock = GetPort(); if ( !sock ) { @@ -650,19 +775,15 @@ wxInputStream *wxFTP::GetInputStream(const wxString& path) if ( !CheckCommand(tmp_str, '1') ) return NULL; - m_streaming = true; - - in_stream = new wxInputFTPStream(this, sock); + sock = AcceptIfActive(sock); + if ( !sock ) + return NULL; - pos_size = m_lastResult.Index(wxT('(')); - if ( pos_size != wxNOT_FOUND ) - { - wxString str_size = m_lastResult(pos_size+1, m_lastResult.Index(wxT(')'))-1); + sock->SetFlags(wxSOCKET_WAITALL); - in_stream->m_ftpsize = wxAtoi(WXSTRINGCAST str_size); - } + m_streaming = true; - sock->SetFlags(wxSOCKET_WAITALL); + wxInputFTPStream *in_stream = new wxInputFTPStream(this, sock); return in_stream; } @@ -672,12 +793,14 @@ wxOutputStream *wxFTP::GetOutputStream(const wxString& path) if ( ( m_currentTransfermode == NONE ) && !SetTransferMode(BINARY) ) return NULL; - wxSocketClient *sock = GetPort(); + wxSocketBase *sock = GetPort(); wxString tmp_str = wxT("STOR ") + path; if ( !CheckCommand(tmp_str, '1') ) return NULL; + sock = AcceptIfActive(sock); + m_streaming = true; return new wxOutputFTPStream(this, sock); @@ -706,22 +829,28 @@ bool wxFTP::GetList(wxArrayString& files, line << _T(' ') << wildcard; } - if (!CheckCommand(line, '1')) + if ( !CheckCommand(line, '1') ) { + m_lastError = wxPROTO_PROTERR; + wxLogDebug(_T("FTP 'LIST' command returned unexpected result from server")); + delete sock; return false; } + + sock = AcceptIfActive(sock); + if ( !sock ) + return false; + files.Empty(); - while ( ReadLine(sock, line) == wxPROTO_NOERR ) + while (ReadLine(sock, line) == wxPROTO_NOERR ) { files.Add(line); } + delete sock; // the file list should be terminated by "226 Transfer complete"" - if ( !CheckResult('2') ) - return false; - - return true; + return CheckResult('2'); } bool wxFTP::FileExists(const wxString& fileName)