loginreply.c

检查用户信息(包括用户名和密码)和用户登录程序

/************************************************************
*PROJECT CODE: COMMAND RESOLUTION                           *
*CREAT DATE  : 2006-12-19                                   *
*CREAT BY    : LiHui                                        *
*FUNCTION    : RESOLUTE THE COMMAND FROM REMOTE PC          *
*MODIFY DATE :                                              *
*DOCUMENT    : NO                                           *
*OTHERS      : NO                                           *
*OS          : LINUX                                        *
************************************************************/
/*The code of LoginReply.c*/

#include <sys/mman.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <linux/fs.h> 
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h> 
#include <errno.h>
#include <stdlib.h> 
#include <string.h>
#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
#include <stdlib.h>
#include <netdb.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <time.h>

#include "CommandResolution.h"
#include "LoginReply.h"//响应用户登入登出命令
#include "Interception.h"//监听操作头文件
#include "BrowseReplay.h"//查询重放命令解析头文件
#include "ArchiveThread.h"//备份数据线程头文件
#include "fs.h"//与硬盘操作相关的函数
#include "mpi.h"
#include "q21.h"
#include "dsp.h"


/*登入检查函数*/
int LoginReply(char *msgBuffer, int msglen)
{
	User_Information UserInfo; 
	unsigned char UserNameLen;
	unsigned char PasswordLen;
	int retval = -2;
	
	if(Collecter_Inf.LoginPC_num < MAX_LOGIN_NUM)
	{
		UserNameLen = (unsigned char)msgBuffer[6]*256 + (unsigned char)msgBuffer[5];
		PasswordLen = (unsigned char)msgBuffer[9 + UserNameLen]*256 +(unsigned char)msgBuffer[8 + UserNameLen];
		memset(&UserInfo, 0, sizeof(User_Information));
		memcpy(UserInfo.UserName, msgBuffer + 7, UserNameLen);
		memcpy(UserInfo.Password, msgBuffer + 10 + UserNameLen, PasswordLen);
		
		retval = UserInfoCheck(&UserInfo);
		
		if(retval = 0)
		{//登入成功
			memcpy(&Collecter_Inf.LoginPC[Collecter_Inf.LoginPC_num].ServerIP, &addr_from, sizeof(struct sockaddr_in));
			memcpy(Collecter_Inf.LoginPC[Collecter_Inf.LoginPC_num].UserPowerCH, UserInfo.UserPowerCH, MAX_CHANNEL_NUM);
			Collecter_Inf.LoginPC[Collecter_Inf.LoginPC_num].UserPowerOP = UserInfo.UserPowerOP;
			Collecter_Inf.LoginPC_num ++;
			msgBuffer[3] = 'A';
			msgBuffer[4] = 0x00;//登录成功
			msgBuffer[5] = 0xff;
			sendto( socket_udp_send, msgBuffer, 6, 0,(struct sockaddr*)&addr_from, sizeof(struct sockaddr_in) );
			return 0;
		}
		else
		{//登入失败
			msgBuffer[3] = 'A';
			msgBuffer[4] = 0x01;//登录失败
			msgBuffer[5] = 0xff;
			sendto( socket_udp_send, msgBuffer, 6, 0,(struct sockaddr*)&addr_from, sizeof(struct sockaddr_in) );
			return -1;
		}			
	}
	else 
	{//登入失败
		msgBuffer[3] = 'A';
		msgBuffer[4] = 0x01;//登录失败
		msgBuffer[5] = 0xff;
		sendto( socket_udp_send, msgBuffer, 6, 0,(struct sockaddr*)&addr_from, sizeof(struct sockaddr_in) );
		return -1;
	}
}

/*检查用户信息，包括用户名和密码。返回值 -1表示用户名或密码不正确，登入失败*/
int UserInfoCheck(User_Information *UserInfo)
{
	struct s_iniinfo s_Ini_Info;//读取USERINFO.INI文件时调用
	char userinfo_buff[512*1024];//USERINFO.INI文件缓冲区
	unsigned long userinfo_len;  //USERINFO.INI文件长度
	User_Information UserInfo_temp;
	unsigned char UserinfoSize;
	unsigned char usernum;//USERINFO.INI文件中的用户数量
	unsigned char index;
	char *UserInfo_Head = "[USERINFO]";
	char *pAddr;

	s_Ini_Info.num = USERINFO_INI;
	userinfo_len = read_ini(&s_Ini_Info, userinfo_buff);//读取USERINFO.INI文件
	
	pAddr 	= strstr(userinfo_buff, UserInfo_Head);//找出[USERINFO]字段
	
	pAddr += 10;
	usernum = *pAddr;//查找注册用户数目
	pAddr++;
	UserinfoSize = (unsigned char)sizeof(User_Information);
	
	for(index = 0; index < usernum; index ++)
	{
		memset(&UserInfo_temp, 0, UserinfoSize);
		memcpy(&UserInfo_temp, pAddr + index*UserinfoSize, UserinfoSize);
		if(!(strcmp(UserInfo_temp.UserName, UserInfo->UserName) || strcmp(UserInfo_temp.Password, UserInfo->Password)))//用户名和密码正确，允许登入
		{
			*UserInfo = UserInfo_temp;
			return 0;//用户登录成功
		}
	}
	return -1;//用户登录失败
}

/*退出检查函数*/
int LogoutReply(char *msgBuffer, int msglen, int loginIndex)
{
	int index;
	for(index = loginIndex; index < Collecter_Inf.LoginPC_num; index++ )//将该PC的IP从IP列表中删除，并且登录的PC机个数减1
		Collecter_Inf.LoginPC[index].ServerIP= Collecter_Inf.LoginPC[index+1].ServerIP;
	
	Collecter_Inf.LoginPC_num --;

	msgBuffer[3] = 'A' ;
	msgBuffer[4] = 0x00;//退出成功
	msgBuffer[5] = 0xff;    
	sendto( socket_udp_send, msgBuffer, 6, 0,(struct sockaddr*)&addr_from, sizeof(struct sockaddr_in) );
	return 0;
}