ftpdown.rar_ftpdown

#include <stdlib.h> #include <windows.h> #include <wininet.h> #include <stdio.h> HINTERNET hIntSession,hFtpSession,filehandle; char cholddir[256]; //保存根目录 char *FTPError(int error); bool fileCompare(LPCSTR filename,WIN32_FIND_DATA &filedata); int FTPDisconnet(); int FTPConnect(char *svr, unsigned int port, char *usr, char *pwd) { int error; unsigned long llength = 256; // hIntSession = InternetOpen ("FtpDown",INTERNET_OPEN_TYPE_PRECONFIG,NULL,NULL,0); if (hIntSession == NULL) { InternetCloseHandle(hIntSession); error = 1; return error; } hFtpSession = InternetConnect (hIntSession,svr,port,usr,pwd,INTERNET_SERVICE_FTP,0,NULL); if (hFtpSession == NULL) { InternetCloseHandle(hFtpSession); error = 1; return error; } FtpGetCurrentDirectory(hFtpSession,cholddir,&llength); return 0; } int FTPFget(char *dst_fname, char *src_fname,unsigned int *size) { int error; char *LocalName,*pos,buffer[256],*serdir,*serfile ; WIN32_FIND_DATA filedata; BOOL bSuccess; strcpy (buffer,src_fname); while (pos = strrchr(buffer,'/')) *pos = '\\'; if(pos = strrchr(buffer,'\\')) { *pos = 0; serdir = buffer; serfile =pos+1; } else { serfile = buffer; serdir = buffer; } bSuccess = FtpSetCurrentDirectory(hFtpSession,cholddir); // 重新设置为根目录 if (!bSuccess) // { error = 2; // return error; // } // 错误判断 if (strcmp(serdir,serfile)) { bSuccess = FtpSetCurrentDirectory(hFtpSession,serdir); if (!bSuccess) { error = 2; return error; } } filehandle = FtpFindFirstFile(hFtpSession,serfile,&filedata,0,NULL); if (filehandle == NULL) { InternetCloseHandle(filehandle); error = 3; return error; } else { LocalName = dst_fname; if(!FtpGetFile(hFtpSession,filedata.cFileName,LocalName,false, FILE_ATTRIBUTE_NORMAL,FTP_TRANSFER_TYPE_BINARY,NULL)) { error = 4; return error; } *size = filedata.nFileSizeHigh*MAXWORD+filedata.nFileSizeLow; } InternetCloseHandle(filehandle); // 释放，不然下次调用FtpFindFirstFile返回的永远是NULL return 0; } char *FTPError(int error) { if (error) { switch(error) { case 1: return "服务器连接失败!"; case 2: return "设置目录失败!"; case 3: return "查找文件失败!"; case 4: return "文件下载失败!"; case 5: return "FTP 关闭失败!"; default : return "一般错误!"; } } return "未发生错误!"; } int FTPDisconnet() { int error; if (InternetCloseHandle (filehandle)&&InternetCloseHandle (hFtpSession) &&InternetCloseHandle (hIntSession) ) return 0; else error = 5; return error; } void main() { char *sur = "0.0.0.0";//ftp地址 unsigned int port = 21; char *usr = "xxx";//用户名 char *pwd = "xxx";//密码 char *src_fname = "//xxx";//服务器目录 char *dst_fname1 = "xxx";//本地目录 unsigned int a=5; unsigned int *size = &a; FTPConnect(sur,port,usr,pwd); FTPFget(dst_fname1,src_fname,size); //FTPFget(dst_fname2,src_fname1,size); }