/ExtLibs/wxWidgets/src/common/ftp.cpp
C++ | 1022 lines | 737 code | 130 blank | 155 comment | 90 complexity | b3e1d53cb32185cbb8a4984e1b532d14 MD5 | raw file
- /////////////////////////////////////////////////////////////////////////////
- // Name: src/common/ftp.cpp
- // Purpose: FTP protocol
- // Author: Guilhem Lavaux
- // 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, ...)
- // 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
- /////////////////////////////////////////////////////////////////////////////
- // ============================================================================
- // declarations
- // ============================================================================
- // ----------------------------------------------------------------------------
- // headers
- // ----------------------------------------------------------------------------
- // For compilers that support precompilation, includes "wx.h".
- #include "wx/wxprec.h"
- #ifdef __BORLANDC__
- #pragma hdrstop
- #endif
- #if wxUSE_PROTOCOL_FTP
- #ifndef WX_PRECOMP
- #include <stdlib.h>
- #include "wx/string.h"
- #include "wx/utils.h"
- #include "wx/log.h"
- #include "wx/intl.h"
- #include "wx/wxcrtvararg.h"
- #endif // WX_PRECOMP
- #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"
- #ifndef __MWERKS__
- #include <memory.h>
- #endif
- // ----------------------------------------------------------------------------
- // constants
- // ----------------------------------------------------------------------------
- // the length of FTP status code (3 digits)
- static const size_t LEN_CODE = 3;
- // ----------------------------------------------------------------------------
- // macros
- // ----------------------------------------------------------------------------
- IMPLEMENT_DYNAMIC_CLASS(wxFTP, wxProtocol)
- IMPLEMENT_PROTOCOL(wxFTP, wxT("ftp"), wxT("ftp"), true)
- // ============================================================================
- // implementation
- // ============================================================================
- // ----------------------------------------------------------------------------
- // wxFTP constructor and destructor
- // ----------------------------------------------------------------------------
- wxFTP::wxFTP()
- {
- m_streaming = false;
- m_currentTransfermode = NONE;
- m_username = wxT("anonymous");
- m_password << wxGetUserId() << wxT('@') << wxGetFullHostName();
- SetNotify(0);
- SetFlags(wxSOCKET_NOWAIT);
- m_bPassive = true;
- 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();
- }
- // ----------------------------------------------------------------------------
- // wxFTP connect and login methods
- // ----------------------------------------------------------------------------
- bool wxFTP::Connect(const wxSockAddress& addr, bool WXUNUSED(wait))
- {
- if ( !wxProtocol::Connect(addr) )
- {
- m_lastError = wxPROTO_NETERR;
- return false;
- }
- if ( !m_username )
- {
- m_lastError = wxPROTO_CONNERR;
- return false;
- }
- // we should have 220 welcome message
- if ( !CheckResult('2') )
- {
- Close();
- return false;
- }
- wxString command;
- command.Printf(wxT("USER %s"), m_username.c_str());
- char rc = SendCommand(command);
- if ( rc == '2' )
- {
- // 230 return: user accepted without password
- m_lastError = wxPROTO_NOERR;
- return true;
- }
- if ( rc != '3' )
- {
- m_lastError = wxPROTO_CONNERR;
- Close();
- return false;
- }
- command.Printf(wxT("PASS %s"), m_password.c_str());
- if ( !CheckCommand(command, '2') )
- {
- m_lastError = wxPROTO_CONNERR;
- Close();
- return false;
- }
- m_lastError = wxPROTO_NOERR;
- return true;
- }
- bool wxFTP::Connect(const wxString& host, unsigned short port)
- {
- wxIPV4address addr;
- addr.Hostname(host);
- if ( port )
- addr.Service(port);
- else if (!addr.Service(wxT("ftp")))
- addr.Service(21);
- return Connect(addr);
- }
- bool wxFTP::Close()
- {
- if ( m_streaming )
- {
- m_lastError = wxPROTO_STREAMING;
- return false;
- }
- if ( IsConnected() )
- {
- if ( !CheckCommand(wxT("QUIT"), '2') )
- {
- m_lastError = wxPROTO_CONNERR;
- wxLogDebug(wxT("Failed to close connection gracefully."));
- }
- }
- return wxSocketClient::Close();
- }
- // ============================================================================
- // low level methods
- // ============================================================================
- wxSocketBase *wxFTP::AcceptIfActive(wxSocketBase *sock)
- {
- if ( m_bPassive )
- return sock;
- // now wait for a connection from server
- wxSocketServer *sockSrv = (wxSocketServer *)sock;
- if ( !sockSrv->WaitForAccept() )
- {
- m_lastError = wxPROTO_CONNERR;
- wxLogError(_("Timeout while waiting for FTP server to connect, try passive mode."));
- wxDELETE(sock);
- }
- else
- {
- m_lastError = wxPROTO_NOERR;
- sock = sockSrv->Accept(true);
- delete sockSrv;
- }
- return sock;
- }
- bool wxFTP::Abort()
- {
- if ( !m_streaming )
- return true;
- m_streaming = false;
- if ( !CheckCommand(wxT("ABOR"), '4') )
- return false;
- return CheckResult('2');
- }
- // ----------------------------------------------------------------------------
- // Send command to FTP server
- // ----------------------------------------------------------------------------
- char wxFTP::SendCommand(const wxString& command)
- {
- if ( m_streaming )
- {
- m_lastError = wxPROTO_STREAMING;
- return 0;
- }
- 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 0;
- }
- // don't show the passwords in the logs (even in debug ones)
- wxString cmd, password;
- if ( command.Upper().StartsWith(wxT("PASS "), &password) )
- {
- cmd << wxT("PASS ") << wxString(wxT('*'), password.length());
- }
- else
- {
- cmd = command;
- }
- LogRequest(cmd);
- m_lastError = wxPROTO_NOERR;
- return GetResult();
- }
- // ----------------------------------------------------------------------------
- // Receive servers reply
- // ----------------------------------------------------------------------------
- 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
- // 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
- // xyz-...
- // ...
- // xyz ...
- // and the intermeidate lines may start with xyz or not
- bool badReply = false;
- bool firstLine = true;
- bool endOfReply = false;
- while ( !endOfReply && !badReply )
- {
- wxString line;
- m_lastError = ReadLine(this,line);
- if ( m_lastError )
- {
- m_bEncounteredError = true;
- return 0;
- }
- LogResponse(line);
- if ( !m_lastResult.empty() )
- {
- // separate from last line
- m_lastResult += wxT('\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 ( line.Len() < LEN_CODE + 1 )
- {
- if ( firstLine )
- {
- badReply = true;
- }
- }
- else // line has at least 4 chars
- {
- // this is the char which tells us what we're dealing with
- wxChar chMarker = line.GetChar(LEN_CODE);
- if ( firstLine )
- {
- code = wxString(line, LEN_CODE);
- switch ( chMarker )
- {
- case wxT(' '):
- endOfReply = true;
- break;
- case wxT('-'):
- firstLine = false;
- break;
- default:
- // unexpected
- badReply = true;
- }
- }
- else // subsequent line of multiline reply
- {
- if ( line.compare(0, LEN_CODE, code) == 0 )
- {
- if ( chMarker == wxT(' ') )
- {
- endOfReply = true;
- }
- }
- }
- }
- }
- if ( badReply )
- {
- wxLogDebug(wxT("Broken FTP server: '%s' is not a valid reply."),
- m_lastResult.c_str());
- m_lastError = wxPROTO_PROTERR;
- return 0;
- }
- else
- m_lastError = wxPROTO_NOERR;
- // if we got here we must have a non empty code string
- return (char)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(wxT("unknown FTP transfer mode"));
- // fall through
- case BINARY:
- mode = wxT('I');
- break;
- case ASCII:
- mode = wxT('A');
- break;
- }
- if ( !DoSimpleCommand(wxT("TYPE"), mode) )
- {
- wxLogError(_("Failed to set FTP transfer mode to %s."),
- (transferMode == ASCII ? _("ASCII") : _("binary")));
- return false;
- }
- // If we get here the operation has been successfully 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() )
- {
- fullcmd << wxT(' ') << arg;
- }
- if ( !CheckCommand(fullcmd, '2') )
- {
- wxLogDebug(wxT("FTP command '%s' failed."), fullcmd.c_str());
- m_lastError = wxPROTO_NETERR;
- return false;
- }
- m_lastError = wxPROTO_NOERR;
- return true;
- }
- bool wxFTP::ChDir(const wxString& 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?
- return DoSimpleCommand(wxT("CWD"), dir);
- }
- bool wxFTP::MkDir(const wxString& dir)
- {
- return DoSimpleCommand(wxT("MKD"), dir);
- }
- bool wxFTP::RmDir(const wxString& dir)
- {
- return DoSimpleCommand(wxT("RMD"), dir);
- }
- wxString wxFTP::Pwd()
- {
- wxString path;
- if ( CheckCommand(wxT("PWD"), '2') )
- {
- // the result is at least that long if CheckCommand() succeeded
- wxString::const_iterator p = m_lastResult.begin() + LEN_CODE + 1;
- if ( *p != wxT('"') )
- {
- wxLogDebug(wxT("Missing starting quote in reply for PWD: %s"),
- wxString(p, m_lastResult.end()));
- }
- else
- {
- for ( ++p; (bool)*p; ++p ) // FIXME-DMARS
- {
- if ( *p == wxT('"') )
- {
- // check if the quote is doubled
- ++p;
- if ( !*p || *p != wxT('"') )
- {
- // no, this is the end
- break;
- }
- //else: yes, it is: this is an embedded quote in the
- // filename, treat as normal char
- }
- path += *p;
- }
- if ( !*p )
- {
- wxLogDebug(wxT("Missing ending quote in reply for PWD: %s"),
- m_lastResult.c_str() + LEN_CODE + 1);
- }
- }
- }
- else
- {
- m_lastError = wxPROTO_PROTERR;
- wxLogDebug(wxT("FTP PWD command failed."));
- }
- return path;
- }
- bool wxFTP::Rename(const wxString& src, const wxString& dst)
- {
- wxString str;
- str = wxT("RNFR ") + src;
- if ( !CheckCommand(str, '3') )
- return false;
- str = wxT("RNTO ") + dst;
- return CheckCommand(str, '2');
- }
- bool wxFTP::RmFile(const wxString& path)
- {
- wxString str;
- str = wxT("DELE ") + path;
- return CheckCommand(str, '2');
- }
- // ----------------------------------------------------------------------------
- // wxFTP port methods
- // ----------------------------------------------------------------------------
- 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;
- }
- 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(wxT("."), wxT(","));
- addrIP << wxT(',')
- << wxString::Format(wxT("%d"), portNew >> 8) << wxT(',')
- << wxString::Format(wxT("%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->IsOk())
- {
- // We use IsOk() here to see if everything is ok
- m_lastError = wxPROTO_PROTERR;
- delete sockSrv;
- return NULL;
- }
- //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(wxT("PORT"), port) )
- {
- m_lastError = wxPROTO_PROTERR;
- delete sockSrv;
- wxLogError(_("The FTP server doesn't support the PORT command."));
- return NULL;
- }
- m_lastError = wxPROTO_NOERR;
- sockSrv->Notify(false); // Don't send any events
- return sockSrv;
- }
- wxSocketBase *wxFTP::GetPassivePort()
- {
- if ( !DoSimpleCommand(wxT("PASV")) )
- {
- m_lastError = wxPROTO_PROTERR;
- wxLogError(_("The FTP server doesn't support passive mode."));
- return NULL;
- }
- size_t addrStart = m_lastResult.find(wxT('('));
- size_t addrEnd = (addrStart == wxString::npos)
- ? wxString::npos
- : m_lastResult.find(wxT(')'), addrStart);
- if ( addrEnd == wxString::npos )
- {
- m_lastError = wxPROTO_PROTERR;
- return NULL;
- }
- // get the port number and address
- int a[6];
- wxString straddr(m_lastResult, addrStart + 1, addrEnd - (addrStart + 1));
- 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[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);
- addr.Service(port);
- wxSocketClient *client = new wxSocketClient();
- if ( !client->Connect(addr) )
- {
- m_lastError = wxPROTO_CONNERR;
- delete client;
- return NULL;
- }
- client->Notify(false);
- m_lastError = wxPROTO_NOERR;
- return client;
- }
- // ----------------------------------------------------------------------------
- // wxFTP download and upload
- // ----------------------------------------------------------------------------
- class wxInputFTPStream : public wxSocketInputStream
- {
- public:
- wxInputFTPStream(wxFTP *ftp, wxSocketBase *sock)
- : wxSocketInputStream(*sock)
- {
- m_ftp = ftp;
- // socket timeout automatically set in GetPort function
- }
- virtual ~wxInputFTPStream()
- {
- delete m_i_socket; // keep at top
- // when checking the result, the stream will
- // almost always show an error, even if the file was
- // properly transfered, thus, let's just grab the result
- // 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;
- }
- // 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;
- wxDECLARE_NO_COPY_CLASS(wxInputFTPStream);
- };
- class wxOutputFTPStream : public wxSocketOutputStream
- {
- public:
- 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(); // save result so user can get to it
- m_ftp->m_streaming = false;
- }
- else
- {
- // abort data connection first
- m_ftp->Abort();
- // and close it after
- delete m_o_socket;
- }
- }
- wxFTP *m_ftp;
- wxDECLARE_NO_COPY_CLASS(wxOutputFTPStream);
- };
- wxInputStream *wxFTP::GetInputStream(const wxString& path)
- {
- if ( ( m_currentTransfermode == NONE ) && !SetTransferMode(BINARY) )
- {
- m_lastError = wxPROTO_CONNERR;
- return NULL;
- }
- wxSocketBase *sock = GetPort();
- if ( !sock )
- {
- m_lastError = wxPROTO_NETERR;
- return NULL;
- }
- wxString tmp_str = wxT("RETR ") + wxURI::Unescape(path);
- if ( !CheckCommand(tmp_str, '1') )
- return NULL;
- sock = AcceptIfActive(sock);
- if ( !sock )
- {
- m_lastError = wxPROTO_CONNERR;
- return NULL;
- }
- sock->SetFlags(wxSOCKET_WAITALL);
- m_streaming = true;
- wxInputFTPStream *in_stream = new wxInputFTPStream(this, sock);
- m_lastError = wxPROTO_NOERR;
- return in_stream;
- }
- wxOutputStream *wxFTP::GetOutputStream(const wxString& path)
- {
- if ( ( m_currentTransfermode == NONE ) && !SetTransferMode(BINARY) )
- {
- m_lastError = wxPROTO_CONNERR;
- return NULL;
- }
- wxSocketBase *sock = GetPort();
- wxString tmp_str = wxT("STOR ") + path;
- if ( !CheckCommand(tmp_str, '1') )
- return NULL;
- sock = AcceptIfActive(sock);
- m_streaming = true;
- m_lastError = wxPROTO_NOERR;
- return new wxOutputFTPStream(this, sock);
- }
- // ----------------------------------------------------------------------------
- // FTP directory listing
- // ----------------------------------------------------------------------------
- bool wxFTP::GetList(wxArrayString& files,
- const wxString& wildcard,
- bool details)
- {
- wxSocketBase *sock = GetPort();
- if (!sock) {
- m_lastError = wxPROTO_NETERR;
- return false;
- }
- // 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 ? wxT("LIST") : wxT("NLST"));
- if ( !wildcard.empty() )
- {
- line << wxT(' ') << wildcard;
- }
- if ( !CheckCommand(line, '1') )
- {
- m_lastError = wxPROTO_PROTERR;
- wxLogDebug(wxT("FTP 'LIST' command returned unexpected result from server"));
- delete sock;
- return false;
- }
- sock = AcceptIfActive(sock);
- if ( !sock ) {
- m_lastError = wxPROTO_CONNERR;
- 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""
- m_lastError = wxPROTO_NOERR;
- 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;
- if ( GetList(fileList, fileName, false) )
- {
- // Some ftp-servers (Ipswitch WS_FTP Server 1.0.5 does this)
- // displays this behaviour when queried on a nonexistent 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;
- }
- // ----------------------------------------------------------------------------
- // 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 << wxT("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(), wxT("%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.
- const size_t numFiles = fileList.size();
- size_t i;
- for ( i = 0; i < fileList.GetCount(); i++ )
- {
- if ( fileList[i].Upper().Contains(fileName.Upper()) )
- break;
- }
- if ( i != numFiles )
- {
- // 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) == wxT("-") )
- {
- if ( wxSscanf(fileList[i].c_str(),
- wxT("%*s %*s %*s %*s %i %*s %*s %*s %*s"),
- &filesize) != 9 )
- {
- // Hmm... Invalid response
- wxLogDebug(wxT("Invalid LIST response"));
- }
- }
- else // Windows-style response (?)
- {
- if ( wxSscanf(fileList[i].c_str(),
- wxT("%*s %*s %i %*s"),
- &filesize) != 4 )
- {
- // something bad happened..?
- wxLogDebug(wxT("Invalid or unknown LIST response"));
- }
- }
- }
- }
- }
- }
- }
- // filesize might still be -1 when exiting
- return filesize;
- }
- #endif // wxUSE_PROTOCOL_FTP