/////////////////////////////////////////////////////////////////////////////
-// Name: ftp.cpp
+// Name: common/ftp.cpp
// Purpose: FTP protocol
// Author: Guilhem Lavaux
// Modified by: Mark Johnson, wxWindows@mj10777.de
// 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
-// Licence: wxWindows license
+// (c) 1998-2004 wxWidgets team
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
-#ifdef __GNUG__
- #pragma implementation "ftp.h"
-#endif
-
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#pragma hdrstop
#endif
-#if wxUSE_SOCKETS && wxUSE_STREAMS
+#if wxUSE_PROTOCOL_FTP
#ifndef WX_PRECOMP
#include <stdlib.h>
#include "wx/protocol/ftp.h"
#if defined(__WXMAC__)
- #include "/wx/mac/macsock.h"
+ #include "wx/mac/macsock.h"
#endif
#ifndef __MWERKS__
// ----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxFTP, wxProtocol)
-IMPLEMENT_PROTOCOL(wxFTP, wxT("ftp"), wxT("ftp"), TRUE)
+IMPLEMENT_PROTOCOL(wxFTP, wxT("ftp"), wxT("ftp"), true)
// ============================================================================
// implementation
wxFTP::wxFTP()
{
m_lastError = wxPROTO_NOERR;
- m_streaming = FALSE;
- m_modeSet = FALSE;
+ m_streaming = false;
+ m_currentTransfermode = NONE;
m_user = wxT("anonymous");
m_passwd << wxGetUserId() << wxT('@') << wxGetFullHostName();
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();
}
if ( !wxProtocol::Connect(addr) )
{
m_lastError = wxPROTO_NETERR;
- return FALSE;
+ return false;
}
if ( !m_user )
{
m_lastError = wxPROTO_CONNERR;
- return FALSE;
+ return false;
}
// we should have 220 welcome message
if ( !CheckResult('2') )
{
Close();
- return FALSE;
+ return false;
}
wxString command;
if ( rc == '2' )
{
// 230 return: user accepted without password
- return TRUE;
+ return true;
}
if ( rc != '3' )
{
Close();
- return FALSE;
+ return false;
}
command.Printf(wxT("PASS %s"), m_passwd.c_str());
if ( !CheckCommand(command, '2') )
{
Close();
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
bool wxFTP::Connect(const wxString& host)
if ( m_streaming )
{
m_lastError = wxPROTO_STREAMING;
- return FALSE;
+ return false;
}
if ( IsConnected() )
return 0;
}
- wxLogTrace(_T("ftp"), _T("==> %s"), command.c_str());
+#ifdef __WXDEBUG__
+ // don't show the passwords in the logs (even in debug ones)
+ wxString cmd, password;
+ if ( command.Upper().StartsWith(_T("PASS "), &password) )
+ {
+ cmd << _T("PASS ") << wxString(_T('*'), password.length());
+ }
+ else
+ {
+ cmd = command;
+ }
+
+ wxLogTrace(FTP_TRACE_MASK, _T("==> %s"), cmd.c_str());
+#endif // __WXDEBUG__
return GetResult();
}
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
// ...
// xyz ...
// and the intermeidate lines may start with xyz or not
- bool badReply = FALSE;
- bool firstLine = TRUE;
- bool endOfReply = FALSE;
+ bool badReply = false;
+ bool firstLine = true;
+ bool endOfReply = false;
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() )
{
{
if ( firstLine )
{
- badReply = TRUE;
+ badReply = true;
}
else
{
- wxLogTrace(_T("ftp"), _T("<== %s %s"),
+ wxLogTrace(FTP_TRACE_MASK, _T("<== %s %s"),
code.c_str(), line.c_str());
}
}
if ( firstLine )
{
code = wxString(line, LEN_CODE);
- wxLogTrace(_T("ftp"), _T("<== %s %s"),
+ wxLogTrace(FTP_TRACE_MASK, _T("<== %s %s"),
code.c_str(), line.c_str() + LEN_CODE + 1);
switch ( chMarker )
{
case _T(' '):
- endOfReply = TRUE;
+ endOfReply = true;
break;
case _T('-'):
- firstLine = FALSE;
+ firstLine = false;
break;
default:
// unexpected
- badReply = TRUE;
+ badReply = true;
}
}
else // subsequent line of multiline reply
{
if ( chMarker == _T(' ') )
{
- endOfReply = TRUE;
+ endOfReply = true;
}
- wxLogTrace(_T("ftp"), _T("<== %s %s"),
+ wxLogTrace(FTP_TRACE_MASK, _T("<== %s %s"),
code.c_str(), line.c_str() + LEN_CODE + 1);
}
else
{
// just part of reply
- wxLogTrace(_T("ftp"), _T("<== %s %s"),
+ wxLogTrace(FTP_TRACE_MASK, _T("<== %s %s"),
code.c_str(), line.c_str());
}
}
}
// if we got here we must have a non empty code string
- return code[0u];
+ return (char)code[0u];
}
// ----------------------------------------------------------------------------
bool wxFTP::SetTransferMode(TransferMode transferMode)
{
+ if ( transferMode == m_currentTransfermode )
+ {
+ // nothing to do
+ return true;
+ }
+
wxString mode;
switch ( transferMode )
{
if ( !DoSimpleCommand(_T("TYPE"), mode) )
{
- wxLogError(_("Failed to set FTP transfer mode to %s."),
- transferMode == ASCII ? _("ASCII") : _("binary"));
+ wxLogError(_("Failed to set FTP transfer mode to %s."), (const wxChar*)
+ (transferMode == ASCII ? _("ASCII") : _("binary")));
- return FALSE;
+ return false;
}
- m_modeSet = TRUE;
+ // If we get here the operation has been successfully completed
+ // Set the status-member
+ m_currentTransfermode = transferMode;
- return TRUE;
+ return true;
}
bool wxFTP::DoSimpleCommand(const wxChar *command, const wxString& arg)
{
wxLogDebug(_T("FTP command '%s' failed."), fullcmd.c_str());
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
bool wxFTP::ChDir(const wxString& dir)
str = wxT("RNFR ") + src;
if ( !CheckCommand(str, '3') )
- return FALSE;
+ return false;
str = wxT("RNTO ") + dst;
class wxInputFTPStream : public wxSocketInputStream
{
public:
- wxInputFTPStream(wxFTP *ftp_clt, wxSocketBase *sock)
- : wxSocketInputStream(*sock), m_ftp(ftp_clt)
+ wxInputFTPStream(wxFTP *ftp, wxSocketBase *sock)
+ : wxSocketInputStream(*sock)
{
+ m_ftp = ftp;
+ // 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 ( LastError() == wxStream_NOERROR )
- {
- // 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;
}
+ // 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)
};
class wxOutputFTPStream : public wxSocketOutputStream
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;
+ m_ftp->m_streaming = false;
}
else
{
}
wxFTP *m_ftp;
+
+ 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(const wxIPV4address& addrLocal,
+ const 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 char *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 char *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;
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]);
- wxUint32 hostaddr = (wxUint16)a[5] << 24 |
- (wxUint16)a[4] << 16 |
- (wxUint16)a[3] << 8 |
- a[2];
- wxUint16 port = (wxUint16)a[0] << 8 | a[1];
+ wxUint32 hostaddr = (wxUint16)a[2] << 24 |
+ (wxUint16)a[3] << 16 |
+ (wxUint16)a[4] << 8 |
+ a[5];
+ wxUint16 port = (wxUint16)(a[0] << 8 | a[1]);
wxIPV4address addr;
addr.Hostname(hostaddr);
return NULL;
}
- client->Notify(FALSE);
+ client->Notify(false);
return client;
}
bool wxFTP::Abort()
{
if ( !m_streaming )
- return TRUE;
+ return true;
- m_streaming = FALSE;
+ m_streaming = false;
if ( !CheckCommand(wxT("ABOR"), '4') )
- return FALSE;
+ return false;
return CheckResult('2');
}
wxInputStream *wxFTP::GetInputStream(const wxString& path)
{
- int pos_size;
- wxInputFTPStream *in_stream;
-
- if ( !m_modeSet && !SetTransferMode(BINARY) )
+ if ( ( m_currentTransfermode == NONE ) && !SetTransferMode(BINARY) )
return NULL;
- wxSocketClient *sock = GetPort();
+ wxSocketBase *sock = GetPort();
if ( !sock )
{
return NULL;
}
- wxString tmp_str = wxT("RETR ") + wxURL::ConvertFromURI(path);
+ wxString tmp_str = wxT("RETR ") + wxURI::Unescape(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;
}
wxOutputStream *wxFTP::GetOutputStream(const wxString& path)
{
- if ( !m_modeSet && !SetTransferMode(BINARY) )
+ 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 FALSE;
+ return NULL;
- m_streaming = TRUE;
+ sock = AcceptIfActive(sock);
+
+ m_streaming = true;
return new wxOutputFTPStream(this, sock);
}
{
wxSocketBase *sock = GetPort();
if (!sock)
- return FALSE;
+ return false;
// NLST : List of Filenames (including Directory's !)
// LIST : depending on BS of FTP-Server
// - Windows : like "dir" command
// - others : ?
wxString line(details ? _T("LIST") : _T("NLST"));
- if ( !!wildcard )
+ if ( !wildcard.empty() )
{
line << _T(' ') << wildcard;
}
- if (!CheckCommand(line, '1'))
+ if ( !CheckCommand(line, '1') )
{
- return FALSE;
+ 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 CheckResult('2');
+}
+
+bool wxFTP::FileExists(const wxString& fileName)
+{
+ // This function checks if the file specified in fileName exists in the
+ // current dir. It does so by simply doing an NLST (via GetList).
+ // If this succeeds (and the list is not empty) the file exists.
+
+ bool retval = false;
+ wxArrayString fileList;
- return TRUE;
+ if ( GetList(fileList, fileName, false) )
+ {
+ // Some ftp-servers (Ipswitch WS_FTP Server 1.0.5 does this)
+ // displays this behaviour when queried on a non-existing file:
+ // NLST this_file_does_not_exist
+ // 150 Opening ASCII data connection for directory listing
+ // (no data transferred)
+ // 226 Transfer complete
+ // Here wxFTP::GetList(...) will succeed but it will return an empty
+ // list.
+ retval = !fileList.IsEmpty();
+ }
+
+ return retval;
}
-#ifdef WXWIN_COMPATIBILITY_2
-// deprecated
-wxList *wxFTP::GetList(const wxString& wildcard, bool details)
+// ----------------------------------------------------------------------------
+// FTP GetSize
+// ----------------------------------------------------------------------------
+
+int wxFTP::GetFileSize(const wxString& fileName)
{
- wxSocketBase *sock = GetPort();
- if (!sock)
- return FALSE;
- wxList *file_list = new wxList;
- wxString line;
- // NLST : List of Filenames (including Directory's !)
- // LIST : depending on BS of FTP-Server
- // - Unix : result like "ls" command
- // - Windows : like "dir" command
- // - others : ?
- if (!details)
- line = _T("NLST"); // Default
- else
- line = _T("LIST");
- if (!wildcard.IsNull())
- line += wildcard;
- if (!CheckCommand(line, '1'))
- {
- delete sock;
- delete file_list;
- return NULL;
- }
- while (GetLine(sock, line) == wxPROTO_NOERR)
- {
- file_list->Append((wxObject *)(new wxString(line)));
- }
- if (!CheckResult('2'))
- {
- delete sock;
- file_list->DeleteContents(TRUE);
- delete file_list;
- return NULL;
- }
- return file_list;
+ // return the filesize of the given file if possible
+ // return -1 otherwise (predominantly if file doesn't exist
+ // in current dir)
+
+ int filesize = -1;
+
+ // Check for existance of file via wxFTP::FileExists(...)
+ if ( FileExists(fileName) )
+ {
+ wxString command;
+
+ // First try "SIZE" command using BINARY(IMAGE) transfermode
+ // Especially UNIX ftp-servers distinguish between the different
+ // transfermodes and reports different filesizes accordingly.
+ // The BINARY size is the interesting one: How much memory
+ // will we need to hold this file?
+ TransferMode oldTransfermode = m_currentTransfermode;
+ SetTransferMode(BINARY);
+ command << _T("SIZE ") << fileName;
+
+ bool ok = CheckCommand(command, '2');
+
+ if ( ok )
+ {
+ // The answer should be one line: "213 <filesize>\n"
+ // 213 is File Status (STD9)
+ // "SIZE" is not described anywhere..? It works on most servers
+ int statuscode;
+ if ( wxSscanf(GetLastResult().c_str(), _T("%i %i"),
+ &statuscode, &filesize) == 2 )
+ {
+ // We've gotten a good reply.
+ ok = true;
+ }
+ else
+ {
+ // Something bad happened.. A "2yz" reply with no size
+ // Fallback
+ ok = false;
+ }
+ }
+
+ // Set transfermode back to the original. Only the "SIZE"-command
+ // is dependant on transfermode
+ if ( oldTransfermode != NONE )
+ {
+ SetTransferMode(oldTransfermode);
+ }
+
+ // this is not a direct else clause.. The size command might return an
+ // invalid "2yz" reply
+ if ( !ok )
+ {
+ // The server didn't understand the "SIZE"-command or it
+ // returned an invalid reply.
+ // We now try to get details for the file with a "LIST"-command
+ // and then parse the output from there..
+ wxArrayString fileList;
+ if ( GetList(fileList, fileName, true) )
+ {
+ if ( !fileList.IsEmpty() )
+ {
+ // We _should_ only get one line in return, but just to be
+ // safe we run through the line(s) returned and look for a
+ // substring containing the name we are looking for. We
+ // stop the iteration at the first occurrence of the
+ // filename. The search is not case-sensitive.
+ bool foundIt = false;
+
+ size_t i;
+ for ( i = 0; !foundIt && i < fileList.Count(); i++ )
+ {
+ foundIt = fileList[i].Upper().Contains(fileName.Upper());
+ }
+
+ if ( foundIt )
+ {
+ // The index i points to the first occurrence of
+ // fileName in the array Now we have to find out what
+ // format the LIST has returned. There are two
+ // "schools": Unix-like
+ //
+ // '-rw-rw-rw- owner group size month day time filename'
+ //
+ // or Windows-like
+ //
+ // 'date size filename'
+
+ // check if the first character is '-'. This would
+ // indicate Unix-style (this also limits this function
+ // to searching for files, not directories)
+ if ( fileList[i].Mid(0, 1) == _T("-") )
+ {
+
+ if ( wxSscanf(fileList[i].c_str(),
+ _T("%*s %*s %*s %*s %i %*s %*s %*s %*s"),
+ &filesize) != 9 )
+ {
+ // Hmm... Invalid response
+ wxLogTrace(FTP_TRACE_MASK,
+ _T("Invalid LIST response"));
+ }
+ }
+ else // Windows-style response (?)
+ {
+ if ( wxSscanf(fileList[i].c_str(),
+ _T("%*s %*s %i %*s"),
+ &filesize) != 4 )
+ {
+ // something bad happened..?
+ wxLogTrace(FTP_TRACE_MASK,
+ _T("Invalid or unknown LIST response"));
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+
+ // filesize might still be -1 when exiting
+ return filesize;
}
-#endif // WXWIN_COMPATIBILITY_2
-#endif
- // wxUSE_SOCKETS
+#endif // wxUSE_PROTOCOL_FTP
+
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