// Name: ftp.cpp
// Purpose: FTP protocol
// Author: Guilhem Lavaux
-// Modified by:
+// Modified by: Mark Johnson, wxWindows@mj10777.de
+// 20000917 : RmDir, GetLastResult, GetList
+// 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, ...)
// Created: 07/07/1997
// RCS-ID: $Id$
// Copyright: (c) 1997, 1998 Guilhem Lavaux
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
+// ============================================================================
+// declarations
+// ============================================================================
+
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "ftp.h"
#endif
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#pragma hdrstop
#endif
-#include "wx/setup.h"
-
-#if wxUSE_SOCKETS && wxUSE_STREAMS
+#if wxUSE_PROTOCOL_FTP
-#ifndef __MWERKS__
-#include <memory.h>
-#endif
-#if defined(__WXMAC__)
-#include "/wx/mac/macsock.h"
-#endif
+#ifndef WX_PRECOMP
+ #include <stdlib.h>
+ #include "wx/string.h"
+ #include "wx/utils.h"
+ #include "wx/log.h"
+ #include "wx/intl.h"
+#endif // WX_PRECOMP
-#include <stdlib.h>
-#include "wx/string.h"
-#include "wx/utils.h"
#include "wx/sckaddr.h"
#include "wx/socket.h"
#include "wx/url.h"
#include "wx/sckstrm.h"
#include "wx/protocol/protocol.h"
#include "wx/protocol/ftp.h"
-#include "wx/log.h"
-#ifdef __BORLANDC__
-#pragma hdrstop
+#if defined(__WXMAC__)
+ #include "wx/mac/macsock.h"
+#endif
+
+#ifndef __MWERKS__
+ #include <memory.h>
#endif
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
// the length of FTP status code (3 digits)
static const size_t LEN_CODE = 3;
-#define FTP_BSIZE 1024
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxFTP, wxProtocol)
IMPLEMENT_PROTOCOL(wxFTP, wxT("ftp"), wxT("ftp"), TRUE)
-////////////////////////////////////////////////////////////////
-////// wxFTP constructor and destructor ////////////////////////
-////////////////////////////////////////////////////////////////
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxFTP constructor and destructor
+// ----------------------------------------------------------------------------
wxFTP::wxFTP()
- : wxProtocol()
{
m_lastError = wxPROTO_NOERR;
m_streaming = FALSE;
+ m_currentTransfermode = NONE;
m_user = wxT("anonymous");
m_passwd << wxGetUserId() << wxT('@') << wxGetFullHostName();
Close();
}
-////////////////////////////////////////////////////////////////
-////// wxFTP connect and login methods /////////////////////////
-////////////////////////////////////////////////////////////////
+// ----------------------------------------------------------------------------
+// wxFTP connect and login methods
+// ----------------------------------------------------------------------------
+
bool wxFTP::Connect(wxSockAddress& addr, bool WXUNUSED(wait))
{
- if (!wxProtocol::Connect(addr)) {
- m_lastError = wxPROTO_NETERR;
- return FALSE;
- }
+ if ( !wxProtocol::Connect(addr) )
+ {
+ m_lastError = wxPROTO_NETERR;
+ return FALSE;
+ }
- if (!m_user || !m_passwd) {
- m_lastError = wxPROTO_CONNERR;
- return FALSE;
- }
+ if ( !m_user )
+ {
+ m_lastError = wxPROTO_CONNERR;
+ return FALSE;
+ }
- wxString command;
+ // we should have 220 welcome message
+ if ( !CheckResult('2') )
+ {
+ Close();
+ return FALSE;
+ }
- if (!GetResult('2')) {
- Close();
- return FALSE;
- }
+ wxString command;
+ command.Printf(wxT("USER %s"), m_user.c_str());
+ char rc = SendCommand(command);
+ if ( rc == '2' )
+ {
+ // 230 return: user accepted without password
+ return TRUE;
+ }
- command.sprintf(wxT("USER %s"), (const wxChar *)m_user);
- if (!SendCommand(command, '3')) {
- Close();
- return FALSE;
- }
+ if ( rc != '3' )
+ {
+ Close();
+ return FALSE;
+ }
- command.sprintf(wxT("PASS %s"), (const wxChar *)m_passwd);
- if (!SendCommand(command, '2')) {
- Close();
- return FALSE;
- }
+ command.Printf(wxT("PASS %s"), m_passwd.c_str());
+ if ( !CheckCommand(command, '2') )
+ {
+ Close();
+ return FALSE;
+ }
- return TRUE;
+ return TRUE;
}
bool wxFTP::Connect(const wxString& host)
{
- wxIPV4address addr;
- wxString my_host = host;
-
- addr.Hostname(my_host);
- addr.Service(wxT("ftp"));
+ wxIPV4address addr;
+ addr.Hostname(host);
+ addr.Service(wxT("ftp"));
- return Connect(addr);
+ return Connect(addr);
}
bool wxFTP::Close()
}
if ( IsConnected() )
- SendCommand(wxT("QUIT"), '2');
+ {
+ if ( !CheckCommand(wxT("QUIT"), '2') )
+ {
+ wxLogDebug(_T("Failed to close connection gracefully."));
+ }
+ }
return wxSocketClient::Close();
}
// Send command to FTP server
// ----------------------------------------------------------------------------
-bool wxFTP::SendCommand(const wxString& command, char exp_ret)
+char wxFTP::SendCommand(const wxString& command)
{
- wxString tmp_str;
-
- if (m_streaming)
+ if ( m_streaming )
{
m_lastError = wxPROTO_STREAMING;
- return FALSE;
+ return 0;
}
- tmp_str = command + wxT("\r\n");
+ wxString tmp_str = command + wxT("\r\n");
const wxWX2MBbuf tmp_buf = tmp_str.mb_str();
if ( Write(wxMBSTRINGCAST tmp_buf, strlen(tmp_buf)).Error())
{
m_lastError = wxPROTO_NETERR;
- return FALSE;
+ return 0;
+ }
+
+#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(_T("ftp"), _T("==> %s"), command.c_str());
+ wxLogTrace(FTP_TRACE_MASK, _T("==> %s"), cmd.c_str());
+#endif // __WXDEBUG__
- return GetResult(exp_ret);
+ return GetResult();
}
// ----------------------------------------------------------------------------
// Recieve servers reply
// ----------------------------------------------------------------------------
-bool wxFTP::GetResult(char exp)
+char wxFTP::GetResult()
{
wxString code;
+ // m_lastResult will contain the entire server response, possibly on
+ // multiple lines
+ m_lastResult.clear();
+
// we handle multiline replies here according to RFC 959: it says that a
// reply may either be on 1 line of the form "xyz ..." or on several lines
// in whuch case it looks like
bool endOfReply = FALSE;
while ( !endOfReply && !badReply )
{
- m_lastError = ReadLine(m_lastResult);
+ wxString line;
+ m_lastError = ReadLine(line);
if ( m_lastError )
- return FALSE;
+ return 0;
+
+ if ( !m_lastResult.empty() )
+ {
+ // separate from last line
+ m_lastResult += _T('\n');
+ }
+
+ m_lastResult += line;
// unless this is an intermediate line of a multiline reply, it must
// contain the code in the beginning and '-' or ' ' following it
- if ( m_lastResult.Len() < LEN_CODE + 1 )
+ if ( line.Len() < LEN_CODE + 1 )
{
if ( firstLine )
{
}
else
{
- wxLogTrace(_T("ftp"), _T("<== %s %s"),
- code.c_str(), m_lastResult.c_str());
+ wxLogTrace(FTP_TRACE_MASK, _T("<== %s %s"),
+ code.c_str(), line.c_str());
}
}
else // line has at least 4 chars
{
// this is the char which tells us what we're dealing with
- wxChar chMarker = m_lastResult.GetChar(LEN_CODE);
+ wxChar chMarker = line.GetChar(LEN_CODE);
if ( firstLine )
{
- code = wxString(m_lastResult, LEN_CODE);
- wxLogTrace(_T("ftp"), _T("<== %s %s"),
- code.c_str(), m_lastResult.c_str() + LEN_CODE + 1);
+ code = wxString(line, LEN_CODE);
+ wxLogTrace(FTP_TRACE_MASK, _T("<== %s %s"),
+ code.c_str(), line.c_str() + LEN_CODE + 1);
switch ( chMarker )
{
}
else // subsequent line of multiline reply
{
- if ( wxStrncmp(m_lastResult, code, LEN_CODE) == 0 )
+ if ( wxStrncmp(line, code, LEN_CODE) == 0 )
{
if ( chMarker == _T(' ') )
{
endOfReply = TRUE;
}
- wxLogTrace(_T("ftp"), _T("<== %s %s"),
- code.c_str(), m_lastResult.c_str() + LEN_CODE + 1);
+ 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"),
- code.c_str(), m_lastResult.c_str());
+ wxLogTrace(FTP_TRACE_MASK, _T("<== %s %s"),
+ code.c_str(), line.c_str());
}
}
}
m_lastError = wxPROTO_PROTERR;
+ return 0;
+ }
+
+ // if we got here we must have a non empty code string
+ return code[0u];
+}
+
+// ----------------------------------------------------------------------------
+// wxFTP simple commands
+// ----------------------------------------------------------------------------
+
+bool wxFTP::SetTransferMode(TransferMode transferMode)
+{
+ if ( transferMode == m_currentTransfermode )
+ {
+ // nothing to do
+ return TRUE;
+ }
+
+ wxString mode;
+ switch ( transferMode )
+ {
+ default:
+ wxFAIL_MSG(_T("unknown FTP transfer mode"));
+ // fall through
+
+ case BINARY:
+ mode = _T('I');
+ break;
+
+ case ASCII:
+ mode = _T('A');
+ break;
+ }
+
+ if ( !DoSimpleCommand(_T("TYPE"), mode) )
+ {
+ wxLogError(_("Failed to set FTP transfer mode to %s."), (const wxChar*)
+ (transferMode == ASCII ? _("ASCII") : _("binary")));
+
return FALSE;
}
- if ( code.GetChar(0) != exp )
+ // If we get here the operation has been succesfully completed
+ // Set the status-member
+ m_currentTransfermode = transferMode;
+
+ return TRUE;
+}
+
+bool wxFTP::DoSimpleCommand(const wxChar *command, const wxString& arg)
+{
+ wxString fullcmd = command;
+ if ( !arg.empty() )
{
- m_lastError = wxPROTO_PROTERR;
+ fullcmd << _T(' ') << arg;
+ }
+
+ if ( !CheckCommand(fullcmd, '2') )
+ {
+ wxLogDebug(_T("FTP command '%s' failed."), fullcmd.c_str());
return FALSE;
}
return TRUE;
}
-////////////////////////////////////////////////////////////////
-////// wxFTP low-level methods /////////////////////////////////
-////////////////////////////////////////////////////////////////
bool wxFTP::ChDir(const wxString& dir)
{
- wxString str = dir;
+ // some servers might not understand ".." if they use different directory
+ // tree conventions, but they always understand CDUP - should we use it if
+ // dir == ".."? OTOH, do such servers (still) exist?
- str.Prepend(wxT("CWD "));
- return SendCommand(str, '2');
+ return DoSimpleCommand(_T("CWD"), dir);
}
bool wxFTP::MkDir(const wxString& dir)
{
- wxString str = dir;
- str.Prepend(wxT("MKD "));
- return SendCommand(str, '2');
+ return DoSimpleCommand(_T("MKD"), dir);
}
bool wxFTP::RmDir(const wxString& dir)
{
- wxString str = dir;
-
- str.Prepend(wxT("PWD "));
- return SendCommand(str, '2');
+ return DoSimpleCommand(_T("RMD"), dir);
}
wxString wxFTP::Pwd()
{
wxString path;
- if ( SendCommand(wxT("PWD"), '2') )
+ if ( CheckCommand(wxT("PWD"), '2') )
{
- // the result is at least that long if SendCommand() succeeded
+ // the result is at least that long if CheckCommand() succeeded
const wxChar *p = m_lastResult.c_str() + LEN_CODE + 1;
if ( *p != _T('"') )
{
}
}
}
+ else
+ {
+ wxLogDebug(_T("FTP PWD command failed."));
+ }
return path;
}
bool wxFTP::Rename(const wxString& src, const wxString& dst)
{
- wxString str;
+ wxString str;
- str = wxT("RNFR ") + src;
- if (!SendCommand(str, '3'))
- return FALSE;
+ str = wxT("RNFR ") + src;
+ if ( !CheckCommand(str, '3') )
+ return FALSE;
- str = wxT("RNTO ") + dst;
- return SendCommand(str, '2');
+ str = wxT("RNTO ") + dst;
+
+ return CheckCommand(str, '2');
}
bool wxFTP::RmFile(const wxString& path)
{
- wxString str;
+ wxString str;
+ str = wxT("DELE ") + path;
- str = wxT("DELE ");
- str += path;
- return SendCommand(str, '2');
+ return CheckCommand(str, '2');
}
-////////////////////////////////////////////////////////////////
-////// wxFTP download*upload ///////////////////////////////////
-////////////////////////////////////////////////////////////////
+// ----------------------------------------------------------------------------
+// wxFTP download and upload
+// ----------------------------------------------------------------------------
-class wxInputFTPStream : public wxSocketInputStream {
+class wxInputFTPStream : public wxSocketInputStream
+{
public:
- wxFTP *m_ftp;
- size_t m_ftpsize;
-
- wxInputFTPStream(wxFTP *ftp_clt, wxSocketBase *sock)
- : wxSocketInputStream(*sock), m_ftp(ftp_clt) {}
- size_t GetSize() const { return m_ftpsize; }
- virtual ~wxInputFTPStream(void)
- {
- if (LastError() == wxStream_NOERROR)
- m_ftp->GetResult('2');
- else
- m_ftp->Abort();
- delete m_i_socket;
- }
+ wxInputFTPStream(wxFTP *ftp, wxSocketBase *sock)
+ : wxSocketInputStream(*sock)
+ {
+ m_ftp = ftp;
+
+ // FIXME make the timeout configurable
+
+ // set a shorter than default timeout
+ m_i_socket->SetTimeout(60); // 1 minute
+ }
+
+ size_t GetSize() const { return m_ftpsize; }
+
+ virtual ~wxInputFTPStream()
+ {
+ delete m_i_socket;
+
+ if ( IsOk() )
+ {
+ // wait for "226 transfer completed"
+ m_ftp->CheckResult('2');
+
+ m_ftp->m_streaming = FALSE;
+ }
+ else
+ {
+ m_ftp->Abort();
+ }
+
+ // delete m_i_socket; // moved to top of destructor to accomodate wu-FTPd >= 2.6.0
+ }
+
+ wxFTP *m_ftp;
+ size_t m_ftpsize;
+
+ DECLARE_NO_COPY_CLASS(wxInputFTPStream)
};
-class wxOutputFTPStream : public wxSocketOutputStream {
+class wxOutputFTPStream : public wxSocketOutputStream
+{
public:
- wxFTP *m_ftp;
-
- wxOutputFTPStream(wxFTP *ftp_clt, wxSocketBase *sock)
- : wxSocketOutputStream(*sock), m_ftp(ftp_clt) {}
- virtual ~wxOutputFTPStream(void)
- {
- if ( IsOk() )
- {
- // close data connection first, this will generate "transfer
- // completed" reply
- delete m_o_socket;
-
- // read this reply
- m_ftp->GetResult('2');
- }
- else
- {
- // abort data connection first
- m_ftp->Abort();
-
- // and close it after
- delete m_o_socket;
- }
- }
+ wxOutputFTPStream(wxFTP *ftp_clt, wxSocketBase *sock)
+ : wxSocketOutputStream(*sock), m_ftp(ftp_clt)
+ {
+ }
+
+ virtual ~wxOutputFTPStream(void)
+ {
+ if ( IsOk() )
+ {
+ // close data connection first, this will generate "transfer
+ // completed" reply
+ delete m_o_socket;
+
+ // read this reply
+ m_ftp->CheckResult('2');
+
+ m_ftp->m_streaming = FALSE;
+ }
+ else
+ {
+ // abort data connection first
+ m_ftp->Abort();
+
+ // and close it after
+ delete m_o_socket;
+ }
+ }
+
+ wxFTP *m_ftp;
+
+ DECLARE_NO_COPY_CLASS(wxOutputFTPStream)
};
wxSocketClient *wxFTP::GetPort()
{
- wxIPV4address addr;
- wxSocketClient *client;
- int a[6];
- wxString straddr;
- int addr_pos;
- wxUint16 port;
- wxUint32 hostaddr;
-
- if (!SendCommand(wxT("PASV"), '2'))
- return NULL;
-
- addr_pos = m_lastResult.Find(wxT('('));
- if (addr_pos == -1) {
- m_lastError = wxPROTO_PROTERR;
- return NULL;
- }
- straddr = m_lastResult(addr_pos+1, m_lastResult.Length());
- wxSscanf((const wxChar *)straddr,wxT("%d,%d,%d,%d,%d,%d"),&a[2],&a[3],&a[4],&a[5],&a[0],&a[1]);
-
- hostaddr = (wxUint16)a[5] << 24 | (wxUint16)a[4] << 16 |
- (wxUint16)a[3] << 8 | a[2];
- addr.Hostname(hostaddr);
-
- port = (wxUint16)a[0] << 8 | a[1];
- addr.Service(port);
-
- client = new wxSocketClient();
- if (!client->Connect(addr)) {
- delete client;
- return NULL;
- }
- client->Notify(FALSE);
-
- return client;
+ int a[6];
+
+ if ( !DoSimpleCommand(_T("PASV")) )
+ {
+ wxLogError(_("The FTP server doesn't support passive mode."));
+
+ return NULL;
+ }
+
+ const wxChar *addrStart = wxStrchr(m_lastResult, _T('('));
+ if ( !addrStart )
+ {
+ m_lastError = wxPROTO_PROTERR;
+
+ return NULL;
+ }
+
+ const wxChar *addrEnd = wxStrchr(addrStart, _T(')'));
+ if ( !addrEnd )
+ {
+ m_lastError = wxPROTO_PROTERR;
+
+ return NULL;
+ }
+
+ 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];
+
+ wxIPV4address addr;
+ addr.Hostname(hostaddr);
+ addr.Service(port);
+
+ wxSocketClient *client = new wxSocketClient();
+ if ( !client->Connect(addr) )
+ {
+ delete client;
+ return NULL;
+ }
+
+ client->Notify(FALSE);
+
+ return client;
}
bool wxFTP::Abort()
{
if ( !m_streaming )
return TRUE;
-
+
m_streaming = FALSE;
- if ( !SendCommand(wxT("ABOR"), '4') )
+ if ( !CheckCommand(wxT("ABOR"), '4') )
return FALSE;
- return GetResult('2');
+ return CheckResult('2');
}
wxInputStream *wxFTP::GetInputStream(const wxString& path)
{
- wxString tmp_str;
- int pos_size;
- wxInputFTPStream *in_stream;
+ int pos_size;
+ wxInputFTPStream *in_stream;
- if (!SendCommand(wxT("TYPE I"), '2'))
- return NULL;
+ if ( ( m_currentTransfermode == NONE ) && !SetTransferMode(BINARY) )
+ return NULL;
- wxSocketClient *sock = GetPort();
+ wxSocketClient *sock = GetPort();
- if (!sock) {
- m_lastError = wxPROTO_NETERR;
- return NULL;
- }
+ if ( !sock )
+ {
+ m_lastError = wxPROTO_NETERR;
+ return NULL;
+ }
+
+ wxString tmp_str = wxT("RETR ") + wxURL::ConvertFromURI(path);
+ if ( !CheckCommand(tmp_str, '1') )
+ return NULL;
- tmp_str = wxT("RETR ") + wxURL::ConvertFromURI(path);
- if (!SendCommand(tmp_str, '1'))
- return NULL;
+ m_streaming = TRUE;
- in_stream = new wxInputFTPStream(this, sock);
+ in_stream = new wxInputFTPStream(this, sock);
- pos_size = m_lastResult.Index(wxT('('));
- if (pos_size != wxNOT_FOUND) {
- wxString str_size = m_lastResult(pos_size+1, m_lastResult.Index(wxT(')'))-1);
+ pos_size = m_lastResult.Index(wxT('('));
+ if ( pos_size != wxNOT_FOUND )
+ {
+ wxString str_size = m_lastResult(pos_size+1, m_lastResult.Index(wxT(')'))-1);
- in_stream->m_ftpsize = wxAtoi(WXSTRINGCAST str_size);
- }
- sock->SetFlags(wxSOCKET_WAITALL);
+ in_stream->m_ftpsize = wxAtoi(WXSTRINGCAST str_size);
+ }
- return in_stream;
+ sock->SetFlags(wxSOCKET_WAITALL);
+
+ return in_stream;
}
wxOutputStream *wxFTP::GetOutputStream(const wxString& path)
{
- wxString tmp_str;
+ if ( ( m_currentTransfermode == NONE ) && !SetTransferMode(BINARY) )
+ return NULL;
- if (!SendCommand(wxT("TYPE I"), '2'))
- return NULL;
+ wxSocketClient *sock = GetPort();
- wxSocketClient *sock = GetPort();
+ wxString tmp_str = wxT("STOR ") + path;
+ if ( !CheckCommand(tmp_str, '1') )
+ return NULL;
- tmp_str = wxT("STOR ") + path;
- if (!SendCommand(tmp_str, '1'))
- return FALSE;
+ m_streaming = TRUE;
- return new wxOutputFTPStream(this, sock);
+ return new wxOutputFTPStream(this, sock);
}
-bool wxFTP::GetList(wxArrayString& files, const wxString& wildcard)
+// ----------------------------------------------------------------------------
+// FTP directory listing
+// ----------------------------------------------------------------------------
+
+bool wxFTP::GetList(wxArrayString& files,
+ const wxString& wildcard,
+ bool details)
{
wxSocketBase *sock = GetPort();
- if ( !sock )
- {
+ if (!sock)
return FALSE;
- }
- wxString line = _T("NLST");
+ // NLST : List of Filenames (including Directory's !)
+ // LIST : depending on BS of FTP-Server
+ // - Unix : result like "ls" command
+ // - Windows : like "dir" command
+ // - others : ?
+ wxString line(details ? _T("LIST") : _T("NLST"));
if ( !!wildcard )
{
- // notice that there is no space here
- line += wildcard;
+ line << _T(' ') << wildcard;
}
- if ( !SendCommand(line, '1') )
+ if (!CheckCommand(line, '1'))
{
return FALSE;
}
-
files.Empty();
-
while ( ReadLine(sock, line) == wxPROTO_NOERR )
{
files.Add(line);
}
-
delete sock;
// the file list should be terminated by "226 Transfer complete""
- if ( !GetResult('2') )
+ if ( !CheckResult('2') )
return FALSE;
return TRUE;
}
-wxList *wxFTP::GetList(const wxString& wildcard)
+bool wxFTP::FileExists(const wxString& fileName)
{
- wxList *file_list = new wxList;
- wxSocketBase *sock = GetPort();
- wxString tmp_str = wxT("NLST");
+ // 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.
- if (!wildcard.IsNull())
- tmp_str += wildcard;
+ bool retval = FALSE;
+ wxArrayString fileList;
- if (!SendCommand(tmp_str, '1')) {
- delete sock;
- delete file_list;
- return NULL;
- }
+ 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();
+ }
- while (GetLine(sock, tmp_str) == wxPROTO_NOERR) {
- file_list->Append((wxObject *)(new wxString(tmp_str)));
- }
+ return retval;
+}
- if (!GetResult('2')) {
- delete sock;
- file_list->DeleteContents(TRUE);
- delete file_list;
- return NULL;
- }
+// ----------------------------------------------------------------------------
+// FTP GetSize
+// ----------------------------------------------------------------------------
+
+int wxFTP::GetFileSize(const wxString& fileName)
+{
+ // 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');
- return file_list;
+ 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
- // wxUSE_SOCKETS
+
+#endif // wxUSE_PROTOCOL_FTP
+
projects / wxWidgets.git / blobdiff