Ftp Client source code, VC++6.0, MFC.

/********************************************************************
* File: FtpClient.h, interface for the CFtpClient class.
* Author: Wen Xiaoyong(Wenxy), 20050111,a.m.,[email protected]
* Copyright: (C) Wenxy,2005
* Fix history:
*
********************************************************************/


#if !defined(AFX_FTPCLIENT_H__6D565AC0_46D0_4E18_B1F6_3663A9F9AAF2__INCLUDED_)
#define AFX_FTPCLIENT_H__6D565AC0_46D0_4E18_B1F6_3663A9F9AAF2__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000


// CFtipClient class
#include <stdio.h>
#include <afx.h>
#include <afxwin.h>
#include <afxinet.h>


class CFtpClient  
{
public:
    bool GetFtpFileList();    // 获取FTP服务器上的文件列表
    bool DownloadFile(CString &strRemoteFile, CString &strLocalFile);    // 下载文件
    bool LookFtpServerInfo();    // 查看FTP服务器的升级信息
    CFtpClient(CString strFtpIp);
    virtual ~CFtpClient();
protected:

    CInternetSession m_sess;    // CInternetSession对象
    CFtpConnection *m_pConnect;    // CFtpConnection对象指针
    CFtpFileFind *m_pFinder;    // CFtpFileFind对象指针
    CString m_strFtpServer;        // ftp server IP
    CString m_strLocalFile;        // local file
    CString m_strRemoteFile;    // remore file

    int    m_nErrorCode;            // error code
    CString m_strErrorMsg;            // error massage

};

#endif // !defined(AFX_FTPCLIENT_H__6D565AC0_46D0_4E18_B1F6_3663A9F9AAF2__INCLUDED_)



/********************************************************************
* File: FtpClient.cpp: implementation of the CFtpClient class.
* Author: Wen Xiaoyong(Wenxy), 20050111,a.m.,[email protected]
* Copyright: (C) Wenxy,2005
* Fix history:
*
********************************************************************/


#include "stdafx.h"
#include "FtpClient.h"


// Construction/Destruction
CFtpClient::CFtpClient(CString strFtpIp):m_sess(_T("MyProgram/1.0"))
{
    m_pConnect = NULL;
    m_pFinder = NULL;
    m_strFtpServer = strFtpIp;
    m_strLocalFile = "";   
    m_strRemoteFile = "";
}

CFtpClient::~CFtpClient()
{
    if (m_pConnect != NULL)
    {
        m_pConnect->Close();
        delete m_pConnect;
    }
    if (m_pFinder != NULL)
    {
        delete m_pFinder;
    }
}

bool CFtpClient::LookFtpServerInfo()
{
    // create a session object to initialize WININET library
    // Default parameters mean the access method in the registry
    // (that is, set by the "Internet" icon in the Control Panel)
    // will be used.
    try
    {
        // Request a connection to ftp.microsoft.com. Default
        // parameters mean that we'll try with username = ANONYMOUS
        // and password set to the machine name @ domain name
        m_pConnect = m_sess.GetFtpConnection(m_strFtpServer);
       
        // use a file find object to enumerate files
        m_pFinder = new CFtpFileFind (m_pConnect);       
    }
    catch (CInternetException* pEx)
    {
        TCHAR sz[1024];
        pEx->GetErrorMessage(sz, 1024);
        printf("ERROR!  %s/n", sz);
        pEx->Delete();
        return false;
    }
    return true;
}

// 下载文件
bool CFtpClient::DownloadFile(CString &strRemoteFile, CString &strLocalFile)
{
    try
    {
        // download file
        if(0 == m_pConnect->GetFile(strRemoteFile, strLocalFile))
        {
            m_nErrorCode = GetLastError();
            printf("Error: 获取文件[%s]失败![Error=%d], ", strRemoteFile, m_nErrorCode);       
            switch(m_nErrorCode)
            {
            case 3:
                m_strErrorMsg = "系统找不到路径";
                break;
            case 80:
                m_strErrorMsg = "本地磁盘已存在此文件";
                break;
            case 12003:
                m_strErrorMsg = "FTP服务器上不存在此文件";
                break;
            }
            printf("%s[%s]/n/n", m_strErrorMsg, strLocalFile);
            return false;
        }
        else
        {
            printf("Note: 从FTP服务器下载文件[%s]成功./n", strRemoteFile);
        }
    }
    catch (...)
    {
        printf("Error: download file[%s] failed./n", strRemoteFile);
    }
    return true;
}

// 获取FTP服务器上的文件列表
bool CFtpClient::GetFtpFileList()
{
    // get file list in ftp server
    // start looping
    BOOL bWorking = m_pFinder->FindFile(_T("*"));
    if (false == bWorking)
    {
        return false;
    }
    while (bWorking)
    {
        bWorking = m_pFinder->FindNextFile();
        printf("%s/n", (LPCTSTR) m_pFinder->GetFileURL());
    }
    return true;
}