#include?“include.h“												//?引用列表
#include?“string.h“													
#include?“command.h“												//?標準命令

//?讀取Socket上的信息并且保存到緩存區
int?readBuffer（int?socket?char?*buffer?int?size?int?singleLine）?{
	clearStr（buffer）;
	int?result?=?read（socket?buffer?size）;
	if?（result?==?-1）?{
		return?-1;
	}
	if?（singleLine）?{
		firstLine（buffer）;
		return?strlen（buffer）;
	}
	cutStr（buffer?result）;
	return?result;
}

//?進入被動模式并且返回數據Socket號
int?passive（int?serverSocket?struct?sockaddr_in?data）?{
	char?cmd[STR_MAX_LENGTH];
	char?buffer[STR_MAX_LENGTH];
	int?result;	
	//strcpy（cmd?“TYPE?I\r\n“）;								//?進入二進制模式傳遞信息	
	//result?=?send（serverSocket?cmd?strlen（cmd）?0）;
	//result?=?recv（serverSocket?buffer?sizeof（buffer）0）;
	//printf（“%s“?buffer）;
	strcpy（cmd?“PASV\r\n“）;?//?被動模式命令
	result?=?send（serverSocket?cmd?strlen（cmd）?0）;
	if?（result?		printf（“Error:?Sending?on?stream?socket.\n“）;
		return?-1;
	}?else?{
		readBuffer（serverSocket?buffer?sizeof（buffer）?1）;?//?接受服務器消息
		if?（getCommandNo（buffer）?!=?227）?{
			return?-1;
		}
		int?temp[6];?//?解析服務器消息
		getNumbersAfter（buffer?‘（‘?temp?6）;
		int?portNo?=?temp[4]?*?256?+?temp[5];?//?獲取端口號
		printf（“%d\r\n“?portNo）;

		char?serverIP[STR_MAX_LENGTH];
		clearStr（serverIP）;?//?解析IP地址
		concatInt（serverIP?temp[0]）;
		concatStr（serverIP?“.“）;
		concatInt（serverIP?temp[1]）;
		concatStr（serverIP?“.“）;
		concatInt（serverIP?temp[2]）;
		concatStr（serverIP?“.“）;
		concatInt（serverIP?temp[3]）;
		inet_pton（AF_INET?serverIP?&data.sin_addr）;
		int?dataSocket?=?socket（AF_INET?SOCK_STREAM?0）;
		if?（dataSocket?			printf（“Error:?Failed?to?initial?socket!?Program?will?exit.\n“）;
			return?-1;
		}
		data.sin_family?=?AF_INET;			//?準備數據連接
		data.sin_port?=?htons（portNo）;
		result?=?connect（dataSocket?（struct?sockaddr?*）?&data?sizeof（data））;
		if?（result?			printf（“Error:?Failed?to?connect?socket!?Program?will?exit.\n“）;
			return?-1;
		}

		printf（“%s\n“?buffer）;
		return?dataSocket;					//?返回數據Socket號
	}
}

//?主函數?
int?main（）?{

	printf（“\n“）;
	printf（“Welcome?to?FTP?client.\n“）;
	printf（“Type?\“?\“?for?more?information.\n“）;
	printf（“\n“）;

	int?serverSocket?=?socket（AF_INET?SOCK_STREAM?0）;?//?初始化信息Socket
	if?（serverSocket?		printf（“Error:?Failed?to?initial?socket!?Program?will?exit.\n“）;
		return?-1;
	}

	int?connecting?=?0;?
	int?result;
	struct?sockaddr_in?server;
	struct?sockaddr_in?data;

	char?ftpcmd[STR_MAX_LENGTH];	
	char?buffer[STR_MAX_LENGTH];

	while?（1）?{						//?無限循環等待用戶輸入
		char?cmd[STR_MAX_LENGTH];
		printf（“>“）;
		readline（cmd）;

		if?（sameStr（cmd?“open“））?{?//?連接服務器命令
			if?（connecting?==?1）?{
				printf（
						“Error:?A?server?connect?already?exists?please?disconnect?first.\n“）;
			}?else?{
				printf（“Please?input?the?server?IP?address:?“）;
				char?serverIP[STR_MAX_LENGTH];
				readline（serverIP）;?//?獲取IP
				printf（“Please?input?the?port?N

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

?????文件??????30522??2010-05-15?19:47??Client\.cproject

?????文件???????2384??2010-05-15?19:47??Client\.project

?????文件??????17644??2010-05-20?15:09??Client\client

?????文件??????12399??2010-06-13?10:53??Client\client.c

?????文件??????12957??2010-05-20?15:09??Client\client.c~

?????文件???????1704??2010-06-13?11:11??Client\command.h

?????文件??????90449??2010-05-18?09:17??Client\Debug\Client

?????文件????????113??2010-05-18?09:17??Client\Debug\client.d

?????文件??????88560??2010-05-18?09:17??Client\Debug\client.o

?????文件????????953??2010-05-18?09:17??Client\Debug\makefile

?????文件????????230??2010-05-18?09:17??Client\Debug\objects.mk

?????文件????????390??2010-05-18?09:17??Client\Debug\sources.mk

?????文件????????649??2010-05-18?09:17??Client\Debug\subdir.mk

?????文件????????386??2010-05-16?19:19??Client\include.h

?????文件???????4070??2010-05-19?11:43??Client\string.h

?????文件??????59622??2010-05-15?19:47??Server\.cproject

?????文件???????2384??2010-05-15?19:47??Server\.project

?????文件???????1704??2010-06-13?11:11??Server\command.h

?????文件????????953??2010-05-16?19:18??Server\Debug\makefile

?????文件????????230??2010-05-16?19:18??Server\Debug\objects.mk

?????文件??????97100??2010-05-16?19:18??Server\Debug\Server

?????文件????????113??2010-05-16?19:18??Server\Debug\server.d

?????文件??????93096??2010-05-16?19:18??Server\Debug\server.o

?????文件????????390??2010-05-16?19:18??Server\Debug\sources.mk

?????文件????????649??2010-05-16?19:18??Server\Debug\subdir.mk

?????文件????????407??2010-05-16?19:17??Server\include.h

?????文件??????22500??2010-05-19?12:10??Server\server

?????文件??????15554??2010-12-06?10:57??Server\server.c

?????文件???????4119??2010-05-16?19:17??Server\string.h

?????目錄??????????0??2010-05-30?17:31??Client\Debug

............此處省略6個文件信息