#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

#define?TRUE?1
#define?dataLen?1024
char?user_cmd[10]cmd_arg[20];
char?buf[dataLen];

void?cmd_pwd（int?sockint?sockmsg）;
void?cmd_dir（int?sockint?sockmsg）;
void?cmd_cd（int?sockint?sockmsgchar?*dirName）;
void?cmd_cdback（int?sockint?sockmsg）;
void?cmd_help（int?sockint?sockmsg）;
void?cmd_get（int?sockint?sockmsgchar?*fileName）;
void?cmd_put（int?sockint?sockmsgchar?*fileName）;
void?cmd_quit（int?sockint?sockmsg）;

int?main（int?argcchar?*argv[]）
{
??int?cmd_lenarg_len;
??int?sock?sockmsg;
??struct?sockaddr_in?server?servermsg;
??struct?hostent?*hp;
??
??sock=socket（AF_INETSOCK_STREAM0）;
??sockmsg=socket（AF_INETSOCK_STREAM0）;
??	
??if?（sock<0||sockmsg<0）
??{
	perror（“opening?stream?socket“）;
	exit（1）;
??}

??hp?=?gethostbyname（argv[1]）;
??if?（hp==0）
??{
	fprintf（stderr“%s:unknown?host\n“argv[1]）;
	exit（2）;
??}

??server.sin_family=AF_INET;
??server.sin_port=htons（atoi（argv[2]））;
??memcpy（（char*）&server.sin_addr?（char*）hp->h_addr?hp->h_length）;
??
??servermsg.sin_family=AF_INET;
??servermsg.sin_port=htons（atoi（argv[2]）+1）;
??memcpy（（char*）&servermsg.sin_addr?（char*）hp->h_addr?hp->h_length）;

??if?（connect（sock（struct?sockaddr?*）&serversizeof?server）<0||connect（sockmsg（struct?sockaddr?*）&servermsgsizeof?servermsg）<0）
??{
?	perror（“connecting?stream?socket“）;
	exit（1）;
??}
??
??
??//Get?command?from?command?line?and?do?just?the?action
??while（TRUE）
??{
	memset（user_cmd010）;
	memset（cmd_arg020）;

	//First?get?the?input?character?by?user
	printf（“command:?“）;
	scanf（“%s“user_cmd）;
	cmd_len=strlen（user_cmd）;
	//Then?get?the?command?character?and?the?argument
	if（strcmp（user_cmd“quit“）==0）????	//command?“quit“
	{
		cmd_quit（socksockmsg）;
		close（sockmsg）;
		close（sock）;
		printf（“connection?closed\n\n“）;
		exit（0）;
	}	?
	else?if（strcmp（user_cmd“?“）==0）??	//command?“?“
	{
		cmd_help（socksockmsg）;
	}
	else?if（strcmp（user_cmd“pwd“）==0）?	//command?“pwd“
	{
		cmd_pwd（socksockmsg）;
	}
	else?if（strcmp（user_cmd“dir“）==0）??	//command?“dir“
	{
		cmd_dir（socksockmsg）;
	}
	else?if（strcmp（user_cmd“cd“）==0）	//commad?“cd“
	{
		//input?command?argument
		scanf（“%s“cmd_arg）;
		cmd_cd（socksockmsgcmd_arg）;
	}
	else?if（strcmp（user_cmd“cd..“）==0）
	{
		cmd_cdback（socksockmsg）;
	}
	else?if（strcmp（user_cmd“get“）==0）	//command?“get“
	{
		//input?command?argument
		scanf（“%s“cmd_arg）;
		cmd_get（socksockmsgcmd_arg）;
	}
	else?if（strcmp（user_cmd“put“）==0）	//command?“put“
	{	
		//input?command?argument
		scanf（“%s“cmd_arg）;
		cmd_put（socksockmsgcmd_arg）;
	}
	else
	{
		printf（“bad?command!\n“）;
	}
??}??

}

//command?pwd
void?cmd_pwd（int?sockint?sockmsg）
{
	//int?numRead;
	char?dirName[30];
	write（sockmsguser_cmdsizeof（user_cmd））;
	read（sockdirName30）;
	printf（“%s\n“dirName）;
}

//command?dir
void?cmd_dir（i

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????9100??2010-12-01?16:57??ftp2\Server\server.c

?????文件???????5943??2003-10-15?13:04??ftp2\Client\client.c

?????目錄??????????0??2010-12-01?16:57??ftp2\Server

?????目錄??????????0??2010-11-30?22:29??ftp2\Client

?????目錄??????????0??2010-11-30?22:29??ftp2

-----------?---------??----------?-----??----

????????????????15043????????????????????5