ssh_firewall_session.sh -- 登陆防火墙并运行dis session statistics

firewall_check_sessions.c -- 调用上面脚本。过滤出sessioin的数值

运行：./firewall_check_sessions ssh_firewall_session.sh 192.168.0.1

vi ssh_firewall_session.sh

#!/usr/bin/expect -f

#set port 22

set user xxxxxx

set host [lindex $argv 0 0]

set password xxxxxx

set timeout 30

expect "*assword:*"

send "$password\r"

expect "*FW*"

send "display session statistics\r"

expect "*FW*"

send "quit"

vi firewall_check_sessions.c

#include <stdio.h>

#include <stdlib.h>

#include <sys/types.h>

#include <regex.h>

#include <string.h>

#define OK       0

#define WARNING  1

#define CRITICAL 2

#define UNKNOWN  3

#define LEN 1000L

#define MIN_LEN 32L

//#define TCL_CMD "/home/weihu/tcl/"

#define TCL_CMD "/usr/local/nagios/libexec/"

int exitstatus=OK;

char *exit_status[4]={"OK","WARNING","CRITICAL","UNKNOWN"};

char status_information[LEN];

char performance_data[LEN];

//current session

char cur_session[MIN_LEN]={0};

char tcp_session[MIN_LEN]={0};

char half_open[MIN_LEN]={0};

char half_close[MIN_LEN]={0};

char udp_session[MIN_LEN]={0};

char icmp_session[MIN_LEN]={0};

char rawip_session[MIN_LEN]={0};

//new create session per second

char cur_new_session[MIN_LEN]={0};

char tcp_new_session[MIN_LEN]={0};

char udp_new_session[MIN_LEN]={0};

char icmp_new_session[MIN_LEN]={0};

char rawip_new_session[MIN_LEN]={0};

int parse_status(char *sh_cmd,char *active_status,char *active_ip_addr) {

	int ret;

        FILE *fp;

        char readbuf[LEN];

        char *p,*str;

	int line=0;

	int mark1=0;

	int mark2=0;

/*

        char tmp1[LEN];

        char tmp2[LEN];

        char tmp3[LEN];

        char tmp4[LEN];

*/

        int mark=0;

	char tmp1[MIN_LEN];

	char tmp2[MIN_LEN];

        regex_t reg;

        int cflags=REG_EXTENDED;

        const char *pattern="^Session establishment rate";

        regmatch_t pmatch[1];

	int nmatch=1;

        ret=regcomp(&reg,pattern,cflags);

	if(ret!=0) {

		fprintf(stderr,"regcomp() error.\n");

	}

//	fp=popen("/home/neo/check_log/tcl/auto_ssh.sh","r");

        fp=popen(sh_cmd,"r");

        if(fp==NULL) {

                fprintf(stderr,"popen() error. ");

                exitstatus=CRITICAL;

                printf("%s: - %s | %s\n",exit_status[exitstatus],status_information,performance_data);

                exit(exitstatus);

        }

        while(fgets(readbuf,LEN,fp)!=NULL) {

		line++;

	//	printf("line=%d,readbuf=%s",line,readbuf);

		if(strstr(readbuf,"Current session")) {

			sscanf(readbuf,"Current session(s):%s",cur_session);

		//	printf("cur_session=%s\n",cur_session);

		}

		if(strstr(readbuf,"TCP session")) {

			sscanf(readbuf," Current     TCP session(s): %s",tcp_session);

		//	printf("tcp_session=%s\n",tcp_session);

		}

		if(strstr(readbuf,"Half-Open")) {

			sscanf(readbuf," Half-Open: %s           Half-Close: %s",half_open,half_close);

		//	printf("half_open=%s,half_close=%s\n",half_open,half_close);

		}

		if(strstr(readbuf,"UDP session")) {

			sscanf(readbuf," Current     UDP session(s): %s",udp_session);

		//	printf("udp_session=%s\n",udp_session);

		}

		if(strstr(readbuf,"ICMP session")) {

			sscanf(readbuf," Current    ICMP session(s): %s",icmp_session);

		//	printf("icmp_session=%s\n",icmp_session);

		}

		if(strstr(readbuf,"RAWIP session")) {

			sscanf(readbuf," Current   RAWIP session(s): %s",rawip_session);

		//	printf("rawip_session=%s\n",rawip_session);

		//	break;

		}

		if(strstr(readbuf,"Session establishment rate")) {

			mark++;

		}

		if(mark==1) {

			ret=regexec(&reg,readbuf,nmatch,pmatch,0);

			if(ret==0) {

                //              printf("-----------readbuf=%s",readbuf);

				sscanf(readbuf,"Session establishment rate: %[^/s]",cur_new_session);

			//	printf("cur_new_session=%s\n",cur_new_session);

			}

		}

		if(strstr(readbuf,"TCP     Session establishment rate")) {

			sscanf(readbuf," TCP     Session establishment rate: %[^/s]",tcp_new_session);

		//	printf("tcp_new_session=%s\n",tcp_new_session);

		}

		if(strstr(readbuf,"UDP     Session establishment rate")) {

			sscanf(readbuf," UDP     Session establishment rate: %[^/s]",udp_new_session);

		//	printf("udp_new_session=%s\n",udp_new_session);

		}

		if(strstr(readbuf,"ICMP    Session establishment rate")) {

			sscanf(readbuf," ICMP    Session establishment rate: %[^/s]",icmp_new_session);

		//	printf("icmp_new_session=%s\n",icmp_new_session);

		}

		if(strstr(readbuf,"RAWIP   Session establishment rate")) {

			sscanf(readbuf," RAWIP   Session establishment rate: %[^/s]",rawip_new_session);

		//	printf("rawip_new_session=%s\n",rawip_new_session);

		}

/*

		if(line==3) {

			for(p=strtok(readbuf," ");p;p=strtok(NULL," ")) {

				//      str=p;

				//Sun

				mark1++;

				if(mark1==2) {

				//	printf("p=%s\n",p);

					strcpy(active_status,p);

				//	printf("active_status=%s\n",active_status);

				}

			}

		}

		if(line==4) {

			for(p=strtok(readbuf," ");p;p=strtok(NULL," /")) {

				mark2++;

				if(mark2==2) {

				//	printf("p=%s\n",p);

					strcpy(active_ip_addr,p);

				//	printf("active_ip_addr=%s\n",active_ip_addr);

				}

			}

			break;

		}

*/

        }

//	printf("line=%d\n",line);

        ret=pclose(fp);

        if(ret==-1) {

                fprintf(stderr,"popen() error.\n");

                return -1;

        }

	return 0;

}

int main(int argc, char *argv[]) {

        int ret;

	char sh_cmd[LEN];

	char active_status[LEN];

	char active_ip_addr[LEN];

	if(argc<=1) {

		printf("%s %s\n",argv[0],"auto_ssh_firewall_dis_session.sh + ip");

		exit(-1);

	}

	sprintf(sh_cmd,"%s%s %s",TCL_CMD,argv[1],argv[2]);

//	printf("sh_cmd=%s\n",sh_cmd);

	ret=parse_status(sh_cmd,active_status,active_ip_addr);

	if(ret!=0) {

		fprintf(stderr,"parse_status() error.\n");

		sprintf(status_information,"cur_all_session=%s, cur_all_session_new=%s, tcp_all_session=%s, tcp_all_session_new=%s, tcp_half_open=%s, tcp_half_close=%s, udp_session=%s, udp_session_new=%s, icmp_session=%s, icmp_session_new=%s, rawip_session=%s, rawip_session_new=%s", cur_session, cur_new_session, tcp_session, tcp_new_session, half_open, half_close, udp_session, udp_new_session, icmp_session, icmp_new_session, rawip_session, rawip_new_session);

	sprintf(performance_data,"cur_all_session=%s;;;; cur_all_session_new=%s;;;; tcp_all_session=%s;;;; tcp_all_session_new=%s;;;; tcp_half_open=%s;;;; tcp_half_close=%s;;;; udp_session=%s;;;; udp_session_new=%s;;;; icmp_session=%s;;;; icmp_session_new=%s;;;; rawip_session=%s;;;; rawip_session_new=%s;;;;", cur_session, cur_new_session, tcp_session, tcp_new_session, half_open, half_close, udp_session, udp_new_session, icmp_session, icmp_new_session, rawip_session, rawip_new_session);

		exitstatus=CRITICAL;

		printf("%s - %s | %s\n", exit_status[exitstatus], status_information, performance_data);

		return exitstatus;

	}

	/*

//	printf("active_status=%s\n",active_status);

//	printf("active_ip_addr=%s\n",active_ip_addr);

//	if(atoi(ping_avg)<200 && atoi(loss_packet)==0) {

	if(atoi(ping_avg)<200 && atoi(loss_packet_int)==0) {

		exitstatus=OK;

	}

//	else if(atoi(ping_avg)>=200 && atoi(ping_avg)<500 || atoi(loss_packet)>=10 && atoi(loss_packet)<=50) {

	else if(atoi(ping_avg)>=200 && atoi(ping_avg)<500 || atoi(loss_packet_int)>=10 && atoi(loss_packet_int)<=50) {

		exitstatus=WARNING;

	}

//	else if(atoi(ping_avg)>=500 || atoi(loss_packet)>50) {

	else if(atoi(ping_avg)>=500 || atoi(loss_packet_int)>50) {

		exitstatus=CRITICAL;

	}

	else	{

		exitstatus=CRITICAL;

	}

//	sprintf(status_information,"rta %s%s, loss %s",ping_avg,ping_unit,loss_packet);

	sprintf(status_information,"rta %s%s, loss %s%%",ping_avg,ping_unit,loss_packet_int);

//	sprintf(performance_data,"rta=%s%s;200.000;500.000;0; pl=%s;40;80;; rtmax=%s%s;;;; rtmin=%s%s;;;;",ping_avg,ping_unit,loss_packet,ping_max,ping_unit,ping_min,ping_unit);

	sprintf(performance_data,"rta=%s%s;200.000;500.000;0; pl=%s%%;40;80;; rtmax=%s%s;;;; rtmin=%s%s;;;;",ping_avg,ping_unit,loss_packet_int,ping_max,ping_unit,ping_min,ping_unit); 

	//|rta=0.056ms;200.000;500.000;0; pl=0%;40;80;; rtmax=0.084ms;;;; rtmin=0.029ms;;;; 

	if(strstr(argv[1],"80_49")) {

        	printf("%s - 192.20.198.121: %s | %s\n",exit_status[exitstatus],status_information,performance_data);

	}

	if(strstr(argv[1],"80_50")) {

        	printf("%s - 192.20.198.181: %s | %s\n",exit_status[exitstatus],status_information,performance_data);

	}

        return exitstatus;

	*/

	sprintf(status_information,"cur_all_session=%s, cur_all_session_new=%s, tcp_all_session=%s, tcp_all_session_new=%s, tcp_half_open=%s, tcp_half_close=%s, udp_session=%s, udp_session_new=%s, icmp_session=%s, icmp_session_new=%s, rawip_session=%s, rawip_session_new=%s", cur_session, cur_new_session, tcp_session, tcp_new_session, half_open, half_close, udp_session, udp_new_session, icmp_session, icmp_new_session, rawip_session, rawip_new_session);

	sprintf(performance_data,"cur_all_session=%s;;;; cur_all_session_new=%s;;;; tcp_all_session=%s;;;; tcp_all_session_new=%s;;;; tcp_half_open=%s;;;; tcp_half_close=%s;;;; udp_session=%s;;;; udp_session_new=%s;;;; icmp_session=%s;;;; icmp_session_new=%s;;;; rawip_session=%s;;;; rawip_session_new=%s;;;;", cur_session, cur_new_session, tcp_session, tcp_new_session, half_open, half_close, udp_session, udp_new_session, icmp_session, icmp_new_session, rawip_session, rawip_new_session);

        printf("%s - %s | %s\n", exit_status[exitstatus], status_information, performance_data);

	return exitstatus;

}

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