mirror of
https://github.com/bin456789/reinstall.git
synced 2025-01-18 20:39:14 +08:00
94 lines
2.5 KiB
Bash
94 lines
2.5 KiB
Bash
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#!/bin/ash
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# shellcheck shell=dash
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mac_addr=$1
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ipv4_addr=$2
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ipv4_gateway=$3
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ipv6_addr=$4
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ipv6_gateway=$5
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is_in_china=$6
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if $is_in_china; then
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ipv4_dns1='119.29.29.29'
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ipv4_dns2='223.5.5.5'
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ipv6_dns1='2402:4e00::'
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ipv6_dns2='2400:3200::1'
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else
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ipv4_dns1='1.1.1.1'
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ipv4_dns2='8.8.8.8'
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ipv6_dns1='2606:4700:4700::1111'
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ipv6_dns2='2001:4860:4860::8888'
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fi
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# 检测是否有 dhcpv4
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has_ipv4=false
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dhcpv4=false
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ip -4 addr show scope global | grep inet && dhcpv4=true && has_ipv4=true
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# 检测是否有 slaac
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has_ipv6=false
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slaac=false
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for i in $(seq 10 -1 0); do
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echo waiting slaac for ${i}s
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ip -6 addr show scope global | grep inet6 && slaac=true && has_ipv6=true && break
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sleep 1
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done
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# 设置静态地址
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# udhcpc不支持dhcpv6，所以如果网络是 dhcpv6，也先设置成静态
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ip link set dev eth0 up
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if ! $has_ipv4 && [ -n "$ipv4_addr" ]; then
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ip -4 addr add $ipv4_addr dev eth0
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ip -4 route add default via $ipv4_gateway
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has_ipv4=true
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fi
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if ! $has_ipv6 && [ -n "$ipv6_addr" ]; then
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ip -6 addr add $ipv6_addr dev eth0
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ip -6 route add default via $ipv6_gateway
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has_ipv6=true
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fi
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# 检查 ipv4/ipv6 是否连接联网
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ipv4_has_internet=false
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ipv6_has_internet=false
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for i in $(seq 10); do
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$has_ipv4 && ipv4_test_complete=false || ipv4_test_complete=true
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$has_ipv6 && ipv6_test_complete=false || ipv6_test_complete=true
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if ! $ipv4_test_complete && nslookup www.qq.com $ipv4_dns1; then
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ipv4_has_internet=true
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ipv4_test_complete=true
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fi
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if ! $ipv6_test_complete && nslookup www.qq.com $ipv6_dns1; then
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ipv6_has_internet=true
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ipv6_test_complete=true
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fi
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if $ipv4_test_complete && $ipv6_test_complete; then
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break
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fi
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sleep 1
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done
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# 等待 udhcpc 创建 /etc/resolv.conf
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if { $dhcpv4 || $slaac; } && [ ! -e /etc/resolv.conf ]; then
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sleep 3
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fi
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# 如果ipv4/ipv6不联网，则删除该协议的dns
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if $ipv4_has_internet && ! $ipv6_has_internet; then
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sed -i '/:/d' /etc/resolv.conf
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elif ! $ipv4_has_internet && $ipv6_has_internet; then
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sed -i '/\./d' /etc/resolv.conf
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fi
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# 如果联网了，但没获取到默认 DNS，则添加我们的 DNS
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if $ipv4_has_internet && ! grep '\.' /etc/resolv.conf; then
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echo "nameserver $ipv4_dns1" >>/etc/resolv.conf
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echo "nameserver $ipv4_dns2" >>/etc/resolv.conf
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fi
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if $ipv6_has_internet && ! grep ':' /etc/resolv.conf; then
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echo "nameserver $ipv6_dns1" >>/etc/resolv.conf
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echo "nameserver $ipv6_dns2" >>/etc/resolv.conf
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fi
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