ipv6-centos8-install.sh

#!/bin/sh
random() {
	tr </dev/urandom -dc A-Za-z0-9 | head -c5
	echo
}

array=(1 2 3 4 5 6 7 8 9 0 a b c d e f)
main_interface=$(ip route get 8.8.8.8 | awk -- '{printf $5}')

gen64() {
	ip64() {
		echo "${array[$RANDOM % 16]}${array[$RANDOM % 16]}${array[$RANDOM % 16]}${array[$RANDOM % 16]}"
	}
	echo "$1:$(ip64):$(ip64):$(ip64):$(ip64)"
}
install_3proxy() {
    echo "==== Start Install 3proxy by Aka KrisEl ==="
    echo "..."
    echo "Clone source github > https://github.com/z3apa3a/3proxy"
    git clone https://github.com/z3apa3a/3proxy
    cd 3proxy
    ln -s Makefile.Linux Makefile
    make
    sudo make install
    mkdir -p /usr/local/3proxy/{bin,logs,stat}
    chmod -R 777 /usr/local/3proxy
    mv /3proxy/bin/ /usr/local/3proxy/bin/
    wget https://gist.githubusercontent.com/manhlinhng/34b1fee5f72b83fc211648303ebaa453/raw/ec8d4388d258c099203111fa5e4dd4f2304ad272/3proxy.service-centos8 --output-document=/3proxy/scripts/3proxy.service.default
    cp /3proxy/scripts/3proxy.service.default /usr/lib/systemd/system/3proxy.service
    systemctl link /usr/lib/systemd/system/3proxy.service
    systemctl daemon-reload
    echo "* hard nofile 999999" >>  /etc/security/limits.conf
    echo "* soft nofile 999999" >>  /etc/security/limits.conf
    echo "net.ipv6.conf.$main_interface.proxy_ndp=1" >> /etc/sysctl.conf
    echo "net.ipv6.conf.all.proxy_ndp=1" >> /etc/sysctl.conf
    echo "net.ipv6.conf.default.forwarding=1" >> /etc/sysctl.conf
    echo "net.ipv6.conf.all.forwarding=1" >> /etc/sysctl.conf
    echo "net.ipv6.ip_nonlocal_bind = 1" >> /etc/sysctl.conf
    sysctl -p
    systemctl stop firewalld
    systemctl disable firewalld
    systemctl enable 3proxy.service
    systemctl start 3proxy.service
    cd $WORKDIR
}

gen_3proxy() {
    cat <<EOF
daemon
maxconn 2048
nserver 1.1.1.1
nserver 8.8.4.4
nserver 2001:4860:4860::8888
nserver 2001:4860:4860::8844
nscache 65536
timeouts 1 5 30 60 180 1800 15 60
setgid 65535
setuid 65535
stacksize 6291456 
flush
auth strong

users $(awk -F "/" 'BEGIN{ORS="";} {print $1 ":CL:" $2 " "}' ${WORKDATA})

$(awk -F "/" '{print "auth strong\n" \
"allow " $1 "\n" \
"proxy -6 -n -a -p" $4 " -i" $3 " -e"$5"\n" \
"flush\n"}' ${WORKDATA})
EOF
}

gen_proxy_file_for_user() {
    cat >proxy.txt <<EOF
$(awk -F "/" '{print $3 ":" $4 ":" $1 ":" $2 }' ${WORKDATA})
EOF
}

upload_proxy() {
    cd $WORKDIR
    local PASS=$(random)
    zip --password $PASS proxy.zip proxy.txt
    echo "============ Upload file zip proxy to File.io ========"
    URL=$(curl -F "file=@proxy.zip" https://file.io)

    echo "200 Proxy v6 is ready! Format IP:PORT:LOGIN:PASS"
    echo "Download zip archive from: ${URL}"
    echo "Password: ${PASS}"
    echo "============ Done ========"

}
gen_data() {
    seq $FIRST_PORT $LAST_PORT | while read port; do
        echo "$(random)/$(random)/$IP4/$port/$(gen64 $IP6)"
    done
}

gen_iptables() {
    cat <<EOF
    $(awk -F "/" '{print "iptables -I INPUT -p tcp --dport " $4 "  -m state --state NEW -j ACCEPT"}' ${WORKDATA}) 
EOF
}

gen_ifconfig() {
    cat <<EOF
$(awk -F "/" '{print "ifconfig '$main_interface' inet6 add " $5 "/64"}' ${WORKDATA})
EOF
}
echo "Update app.."
yum -y install git wget gcc net-tools bsdtar zip make >/dev/null

install_3proxy

echo "Working folder = /home/proxy-installer"
WORKDIR="/home/proxy-installer"
WORKDATA="${WORKDIR}/data.txt"
mkdir $WORKDIR && cd $_

IP4=$(curl -4 -s icanhazip.com)
IP6=$(curl -6 -s icanhazip.com | cut -f1-4 -d':')

echo "Internal ip = ${IP4}. Exteranl sub for ip6 = ${IP6}"

FIRST_PORT=12200
LAST_PORT=12400

gen_data >$WORKDIR/data.txt
gen_iptables >$WORKDIR/boot_iptables.sh
gen_ifconfig >$WORKDIR/boot_ifconfig.sh
echo NM_CONTROLLED="no" >> /etc/sysconfig/network-scripts/ifcfg-${main_interface}
chmod +x $WORKDIR/boot_*.sh /etc/rc.local

gen_3proxy >/usr/local/3proxy/3proxy.cfg

cat >>/etc/rc.local <<EOF
systemctl start NetworkManager.service
# ifup ${main_interface}
bash ${WORKDIR}/boot_iptables.sh
bash ${WORKDIR}/boot_ifconfig.sh
ulimit -n 32678
/usr/local/3proxy/bin/3proxy /usr/local/3proxy/3proxy.cfg
systemctl restart 3proxy.service
EOF

bash /etc/rc.local

gen_proxy_file_for_user

upload_proxy