DownloadFtp.cpp
上传用户:oadesign
上传日期:2013-12-25
资源大小:265k
文件大小:9k
- // DownloadFtp.cpp: implementation of the CDownloadFtp class.
- //
- //////////////////////////////////////////////////////////////////////
- #include "stdafx.h"
- #include "NetDownMTR.h"
- #include "DownloadFtp.h"
- #ifdef _DEBUG
- #undef THIS_FILE
- static char THIS_FILE[]=__FILE__;
- #define new DEBUG_NEW
- #endif
- void DownloadNotify ( int nIndex, UINT nNotityType, LPVOID lpNotifyData, LPVOID pDownloadMTR );
- //////////////////////////////////////////////////////////////////////
- // Construction/Destruction
- //////////////////////////////////////////////////////////////////////
- CDownloadFtp::CDownloadFtp()
- {
- }
- CDownloadFtp::~CDownloadFtp()
- {
- }
- //
- // 创建一个 FTP 的数据通道连接
- //
- BOOL CDownloadFtp::CreateFTPDataConnect(CSocketClient &SocketClient)
- {
- ASSERT ( SocketClient.m_hSocket == INVALID_SOCKET );
- // 设被动模式
- if ( !m_SocketClient.SendString ( "PASVrn" ) ) return FALSE;
- CString csResponseStr;
- if ( !m_SocketClient.GetResponse ( 227, &csResponseStr ) )
- return FALSE;
- CString csPasvIP;
- USHORT uPasvPort = 0;
- if ( !m_SocketClient.GetIPAndPortByPasvString ( csResponseStr, csPasvIP, uPasvPort ) )
- return FALSE;
- // 创建数据通道连接
- if ( !SocketClient.Connect ( csPasvIP, uPasvPort ) )
- return FALSE;
- return TRUE;
- }
- //
- // 连接需要下载的服务器
- //
- BOOL CDownloadFtp::Connect ()
- {
- if ( !CDownloadPub::Connect () )
- return FALSE;
- int nResponseCode = m_SocketClient.GetResponse ();
- if ( nResponseCode != 220 )
- {
- Log ( L_WARNING, "Connect to [%s:%u] failed", m_csServer, m_nPort );
- }
- // 登录
- if ( m_csUsername.IsEmpty () )
- m_csUsername = "anonymous";
- if ( !m_SocketClient.SendString ( "USER %srn", m_csUsername ) ) return FALSE;
- nResponseCode = m_SocketClient.GetResponse ();
- // 需要密码
- if ( nResponseCode == 331 )
- {
- if ( !m_SocketClient.SendString ( "PASS %srn", m_csPassword ) ) return FALSE;
- nResponseCode = m_SocketClient.GetResponse ();
- }
- // 登录失败
- if ( nResponseCode != 230 )
- {
- Log ( L_ERROR, "Login failed" );
- return FALSE;
- }
- return TRUE;
- }
- BOOL CDownloadFtp::DownloadOnce()
- {
- // 不需要下载了
- int nWillDownloadSize = Get_WillDownloadSize(); // 本次应该下载的字节数
- int nDownloadedSize = Get_DownloadedSize (); // 已下载字节数
- if ( nWillDownloadSize > 0 && nDownloadedSize >= nWillDownloadSize )
- return DownloadEnd(TRUE);
- if ( !CDownloadPub::DownloadOnce () )
- return DownloadEnd(FALSE);
-
- // 设置接收数据类型为 二进制模式
- if ( !m_SocketClient.SendString ( "TYPE Irn" ) )
- return DownloadEnd(FALSE);
- if ( !m_SocketClient.GetResponse ( 200 ) )
- return DownloadEnd(FALSE);
- SLEEP_RETURN_Down ( 0 );
- // 创建数据通道连接
- CSocketClient SocketClient;
- if ( !CreateFTPDataConnect ( SocketClient ) )
- return DownloadEnd(FALSE);
- SLEEP_RETURN_Down ( 0 );
-
- // 设定下载文件的起始位置
- int nWillDownloadStartPos = Get_WillDownloadStartPos (); // 开始位置
- if ( !m_SocketClient.SendString ( "REST %drn", nWillDownloadStartPos+nDownloadedSize ) )
- return DownloadEnd(FALSE);
- if ( !m_SocketClient.GetResponse ( 350 ) )
- return DownloadEnd(FALSE);
- // 提交下载文件的请求
- if ( !m_SocketClient.SendString ( "RETR %srn", m_csObject ) )
- return DownloadEnd(FALSE);
- if ( !m_SocketClient.GetResponse ( 150 ) )
- return DownloadEnd(FALSE);
- SLEEP_RETURN_Down ( 0 );
- // 从数据通道读取数据,并保存到文件中
- BOOL bRet = RecvDataAndSaveToFile(SocketClient);
- SocketClient.Disconnect ();
- return DownloadEnd ( bRet );
- }
- //
- // 获取远程站点信息,如:是否支持断点续传、要下载的文件大小和创建时间等
- //
- BOOL CDownloadFtp::GetRemoteSiteInfo()
- {
- BOOL bRet = FALSE;
- CSocketClient SocketClient;
- CString csReadData;
- char szRecvBuf[NET_BUFFER_SIZE] = {0};
- int nReadSize = 0;
- CString csOneLine;
- int i;
- if ( !CDownloadPub::GetRemoteSiteInfo() )
- goto Finished;
- if ( !m_SocketClient.Is_Connected () && !Connect () )
- goto Finished;
- // 设置接收数据类型为 ASCII
- if ( !m_SocketClient.SendString ( "TYPE Arn" ) ) goto Finished;
- if ( !m_SocketClient.GetResponse ( 200 ) )
- goto Finished;
- SLEEP_RETURN ( 0 );
-
- // 判断是否支持断点续传
- if ( !m_SocketClient.SendString ( "REST 1rn" ) ) goto Finished;
- m_bSupportResume = ( m_SocketClient.GetResponse () == 350 );
- TRACE ( "是否支持断点续传:%sn", m_bSupportResume ? "支持":"不支持" );
- if ( m_bSupportResume )
- {
- if ( !m_SocketClient.SendString ( "REST 0rn" ) ) goto Finished;
- VERIFY ( m_SocketClient.GetResponse ( 350 ) );
- }
- SLEEP_RETURN ( 0 );
- // 创建数据通道连接
- if ( !CreateFTPDataConnect ( SocketClient ) )
- goto Finished;
- // 发送列举文件命令
- if ( !m_SocketClient.SendString ( "LIST %srn", m_csObject ) )
- goto Finished;
- if ( !m_SocketClient.GetResponse ( 150 ) )
- goto Finished;
- SLEEP_RETURN ( 0 );
-
- // 从数据通道读取文件列表信息,直到命令通道返回 "226" 回应码,注意:这里接收数据用非阻塞型的。
- for ( i=0; ;i++ )
- {
- memset ( szRecvBuf, 0, sizeof(szRecvBuf) );
- nReadSize = SocketClient.Receive ( szRecvBuf, sizeof(szRecvBuf), FALSE );
- if ( nReadSize < 0 )
- {
- Log ( L_WARNING, "Receive file list info failed" );
- break;
- }
- csReadData += szRecvBuf;
- int nResponseCode = m_SocketClient.GetResponse ( (CString*)NULL, FALSE );
- if ( nResponseCode == -1 ) goto Finished;
- else if ( nResponseCode == 0 )
- {
- SLEEP_RETURN ( 100 );
- }
- else if ( nResponseCode == 226 )
- {
- break;
- }
- else goto Finished;
- SLEEP_RETURN ( 0 );
- }
- for ( i=0; !csReadData.IsEmpty() ; i++ )
- {
- csOneLine = GetOneLine ( csReadData );
- if ( !csOneLine.IsEmpty() )
- {
- ParseFileInfoStr ( csOneLine );
- }
- }
- bRet = TRUE;
- Finished:
- m_SocketClient.Disconnect ();
- return bRet;
- }
- //
- // 从 "-rw-rw-rw- 1 user group 37979686 Mar 9 13:39 FTP-Callgle 1.4.0_20060309.cab" 字符串中分析
- // 出文件信息
- //
- void CDownloadFtp::ParseFileInfoStr(CString &csFileInfoStr)
- {
- csFileInfoStr.TrimLeft (); csFileInfoStr.TrimRight ();
- if ( csFileInfoStr.IsEmpty() ) return;
- BOOL bLastCharIsSpace = ( csFileInfoStr[0]==' ' );
- int nSpaceCount = 0;
- CString csFileTime1, csFileTime2, csFileTime3;
- CString csNodeStr;
- CString csFileName;
- for ( int i=0; i<csFileInfoStr.GetLength(); i++ )
- {
- if ( csFileInfoStr[i]==' ' )
- {
- if ( !bLastCharIsSpace )
- {
- csNodeStr = csFileInfoStr.Mid ( i );
- csNodeStr.TrimLeft (); csNodeStr.TrimRight ();
- nSpaceCount ++;
- int nFindPos = csNodeStr.Find ( " ", 0 );
- if ( nFindPos < 0 ) nFindPos = csNodeStr.GetLength() - 1;
- csNodeStr = csNodeStr.Left ( nFindPos );
- // 文件大小
- if ( nSpaceCount == 4 )
- {
- if ( m_nIndex == -1 ) // 主线程才需要获取文件大小的信息
- {
- m_nFileTotalSize = (int)atoi(csNodeStr);
- DownloadNotify ( m_nIndex, NOTIFY_TYPE_GOT_REMOTE_FILESIZE, (LPVOID)m_nFileTotalSize, m_pDownloadMTR );
- int nWillDownloadStartPos = Get_WillDownloadStartPos (); // 开始位置
- int nWillDownloadSize = Get_WillDownloadSize(); // 本次应该下载的字节数
- int nDownloadedSize = Get_DownloadedSize (); // 已下载字节数
- if ( m_nFileTotalSize > 0 && nWillDownloadSize-nDownloadedSize > m_nFileTotalSize )
- Set_WillDownloadSize ( m_nFileTotalSize-nDownloadedSize );
- }
- }
- // 文件时间第一节
- else if ( nSpaceCount == 5 )
- {
- csFileTime1 = csNodeStr;
- }
- // 文件时间第二节
- else if ( nSpaceCount == 6 )
- {
- csFileTime2 = csNodeStr;
- }
- // 文件时间第三节
- else if ( nSpaceCount == 7 )
- {
- csFileTime3 = csNodeStr;
- }
- else if ( nSpaceCount > 7 )
- {
- csFileName = csFileInfoStr.Mid ( i );
- csFileName.TrimLeft(); csFileName.TrimRight();
- break;
- }
- }
- bLastCharIsSpace = TRUE;
- }
- else
- {
- bLastCharIsSpace = FALSE;
- }
- }
- GetFileTimeInfo ( csFileTime1, csFileTime2, csFileTime3 );
- }
- void CDownloadFtp::GetFileTimeInfo(CString csFileTime1, CString csFileTime2, CString csFileTime3)
- {
- if ( csFileTime3.IsEmpty() ) return;
- CString csYear, csMonth, csDay, csHour, csMinute, csSecond;
- int nMonth = GetMouthByShortStr ( csFileTime1 );
- ASSERT ( nMonth >= 1 && nMonth <= 12 );
- csMonth.Format ( "%02d", nMonth );
- COleDateTime tOleNow = COleDateTime::GetCurrentTime ();
- csDay.Format ( "%02d", atoi(csFileTime2) );
- csSecond = "00";
- // 带年的日期,如:Aug 21 2006
- if ( csFileTime3.Find ( ":", 0 ) < 0 )
- {
- csYear = csFileTime3;
- csHour = "00";
- csMinute = "00";
- }
- // 不带年的日期,如:Feb 21 01:11
- else
- {
- csYear.Format ( "%04d", tOleNow.GetYear() );
- int nPos = csFileTime3.Find ( ":", 0 );
- if ( nPos < 0 ) nPos = csFileTime3.GetLength() - 1;
- csHour = csFileTime3.Left ( nPos );
- csMinute = csFileTime3.Mid ( nPos+1 );
- }
- CString csFileTimeInfo;
- csFileTimeInfo.Format ( "%s-%s-%s %s:%s:%s", csYear, csMonth, csDay, csHour, csMinute, csSecond );
- ConvertStrToCTime ( csFileTimeInfo.GetBuffer(0), m_TimeLastModified );
- }