/*************************linux多人聊天室*********************************
?*實現方式：基于linux的socket多線程通信方式。采用sqlite3數據庫存儲用戶信息
?*作者：????曹丹（Cao?Dan）@cqupt
?*完成時間：	2013/01/19
?*************************************************************************?
?*?*/
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?“display.h“
#include?“chatroom_lib.h“

#define?PORT_NUM?8765
#define?BUFF_SIZE?1024
#define?PASSWD_LEN?30
#define?USERNAME_LEN?30

void?action_log（void）;??//登錄服務器
int?action_log_in（void）;
void?action_register（void）;
void?*pthread_read（void?*arg）;
void?sigint_handler（int?signo）;
void?sigpipe_handler（int?signo）;
void?reset_passwd（void）;

int?sockfd;??//套接字描述符
char?buffer_rcv[BUFF_SIZE]?buffer_send[BUFF_SIZE];?//接收和發送緩存區

int?main（int?argc?char?*argv[]）
{
	int?res?choice;

	if（argc?!=?2）?{
		fprintf（stderr?“Usage:?%s?server_ip\n“?argv[0]）;
		exit（EXIT_FAILURE）;
	}
	signal（SIGINT?sigint_handler）;
	signal（SIGPIPE?sigpipe_handler）;

	if?（?confirm_socket_client（&sockfd?argv[1]?PORT_NUM）?==?-1）
		exit（EXIT_FAILURE）;

	while（1）?{
		display_main_menu（）;
		puts（“Enter?your?choice:“）;
		scanf（“%d“&choice）;
		getchar（）;
		switch（choice）?{
		case?1:???//log
			action_log（）;
			if（action_log_in（）?==?-1）?{
				close（sockfd）;
				return?0;
			}
			break;
		case?2:????//register
			action_register（）;
			break;
		case?3:??
			return?0;?/*log?out*/
		default:
			puts（“invalid?input?please?enter?again“）;
			break;
		}?/*end?of?switch?choice?*/
	}?/*end?of?while（1）*/

	return?0;
}?/*end?of?main*/

/*signal?function*/
void?sigint_handler（int?signo）
{
	close（sockfd）;
	puts（“\ncaught?signal?SIGINT.“）;
	puts（“socket?has?been?closed“）;
	//signal（SIGINT?SIG_DFL）;
	exit（EXIT_SUCCESS）;
}

void?sigpipe_handler（int?signo）
{
	puts（“\ncaught?signal?SIGPIPE.“）;	
	puts（“error?occuredconnection?may?have?been?closed?by?server“）;
	exit（EXIT_FAILURE）;
}

void?action_log（void）
{
	char?username[USERNAME_LEN]?passwd[PASSWD_LEN];
	/*pormat?is?u:username:passwd:1*/

	//respons?from?server
	do?{
		puts（“Enter?your?username“）;
		scanf（“%s“username）;??//get?username
		getchar（）;
		puts（“Enter?your?passwd“）;
		scanf（“%s“passwd）;????//get?passwd
		getchar（）;
		sprintf（buffer_send?“u:%s:%s:1\0“?username?passwd）;
		write（sockfd?buffer_send?strlen（buffer_send））;?
		read（sockfd?buffer_rcv?BUFF_SIZE）;
		puts（buffer_rcv）;
	}while（?strncmp（buffer_rcv?“OK“?2）?!=?0?）;

}

int?action_log_in（void）
{
	pthread_t?thread_id;
	void?*thread_ret;
	int?n;

	display_log_in_menu（）;		
	//創建線程讀取服務器數據
	if（pthread_create（&thread_id?NULL?pthread_readNULL）!=0）{
		perror（“pthread_create“）;
		exit（EXIT_FAILURE）;
	}
	while（1）?{
		bzero（buffer_rcv?BUFF_SIZE）;??
		bzero（buffer_send?BUFF_SIZE）;
		get_input_option（buffer_rcv）;??//獲取輸入選項	
		switch（buffer_rcv[0]）?{
		case?‘/‘:	
		case?‘-‘:
			strcpy（buffer_send?buffer_rcv）;
			write（sockfd?buffer_send?BUFF_SIZE）;	
			break;
		case?‘.‘:
			if（!strncmp（buffer_rcv

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2013-01-19?16:07??Chatroom\
?????文件???????18161??2013-01-19?16:03??Chatroom\chatroom_client
?????文件????????5211??2013-01-19?15:49??Chatroom\chatroom_client.c
?????文件????????5644??2013-01-19?16:03??Chatroom\chatroom_client.o
?????文件????????8387??2013-01-19?15:53??Chatroom\chatroom_lib.c
?????文件????????1078??2013-01-18?10:30??Chatroom\chatroom_lib.h
?????文件????????7240??2013-01-19?16:03??Chatroom\chatroom_lib.o
?????文件???????22411??2013-01-19?16:03??Chatroom\chatroom_server
?????文件????????8251??2013-01-19?15:51??Chatroom\chatroom_server.c
?????文件????????7768??2013-01-19?16:03??Chatroom\chatroom_server.o
?????文件????????1603??2013-01-19?15:52??Chatroom\display.c
?????文件?????????162??2013-01-11?13:56??Chatroom\display.h
?????文件????????2116??2013-01-19?16:03??Chatroom\display.o
?????文件??????115764??2013-01-19?16:07??Chatroom\linux多人聊天室項目總結.docx.pdf
?????文件?????????519??2013-01-19?16:03??Chatroom\Makefile
?????文件????????4969??2013-01-17?21:05??Chatroom\tags
?????文件????????3072??2013-01-18?10:55??Chatroom\user_database.db