core: 完成 alpine 环境的静态ip/ipv6配置

alpine-network.sh

@@ -0,0 +1,93 @@
+#!/bin/ash
+# shellcheck shell=dash
+
+mac_addr=$1
+ipv4_addr=$2
+ipv4_gateway=$3
+ipv6_addr=$4
+ipv6_gateway=$5
+is_in_china=$6
+
+if $is_in_china; then
+    ipv4_dns1='119.29.29.29'
+    ipv4_dns2='223.5.5.5'
+    ipv6_dns1='2402:4e00::'
+    ipv6_dns2='2400:3200::1'
+else
+    ipv4_dns1='1.1.1.1'
+    ipv4_dns2='8.8.8.8'
+    ipv6_dns1='2606:4700:4700::1111'
+    ipv6_dns2='2001:4860:4860::8888'
+fi
+
+# 检测是否有 dhcpv4
+has_ipv4=false
+dhcpv4=false
+ip -4 addr show scope global | grep inet && dhcpv4=true && has_ipv4=true
+
+# 检测是否有 slaac
+has_ipv6=false
+slaac=false
+for i in $(seq 10 -1 0); do
+    echo waiting slaac for ${i}s
+    ip -6 addr show scope global | grep inet6 && slaac=true && has_ipv6=true && break
+    sleep 1
+done
+
+# 设置静态地址
+# udhcpc不支持dhcpv6，所以如果网络是 dhcpv6，也先设置成静态
+ip link set dev eth0 up
+if ! $has_ipv4 && [ -n "$ipv4_addr" ]; then
+    ip -4 addr add $ipv4_addr dev eth0
+    ip -4 route add default via $ipv4_gateway
+    has_ipv4=true
+fi
+if ! $has_ipv6 && [ -n "$ipv6_addr" ]; then
+    ip -6 addr add $ipv6_addr dev eth0
+    ip -6 route add default via $ipv6_gateway
+    has_ipv6=true
+fi
+
+# 检查 ipv4/ipv6 是否连接联网
+ipv4_has_internet=false
+ipv6_has_internet=false
+for i in $(seq 10); do
+    $has_ipv4 && ipv4_test_complete=false || ipv4_test_complete=true
+    $has_ipv6 && ipv6_test_complete=false || ipv6_test_complete=true
+
+    if ! $ipv4_test_complete && nslookup www.qq.com $ipv4_dns1; then
+        ipv4_has_internet=true
+        ipv4_test_complete=true
+    fi
+    if ! $ipv6_test_complete && nslookup www.qq.com $ipv6_dns1; then
+        ipv6_has_internet=true
+        ipv6_test_complete=true
+    fi
+
+    if $ipv4_test_complete && $ipv6_test_complete; then
+        break
+    fi
+    sleep 1
+done
+
+# 等待 udhcpc 创建 /etc/resolv.conf
+if { $dhcpv4 || $slaac; } && [ ! -e /etc/resolv.conf ]; then
+    sleep 3
+fi
+
+# 如果ipv4/ipv6不联网，则删除该协议的dns
+if $ipv4_has_internet && ! $ipv6_has_internet; then
+    sed -i '/:/d' /etc/resolv.conf
+elif ! $ipv4_has_internet && $ipv6_has_internet; then
+    sed -i '/\./d' /etc/resolv.conf
+fi
+
+# 如果联网了，但没获取到默认 DNS，则添加我们的 DNS
+if $ipv4_has_internet && ! grep '\.' /etc/resolv.conf; then
+    echo "nameserver $ipv4_dns1" >>/etc/resolv.conf
+    echo "nameserver $ipv4_dns2" >>/etc/resolv.conf
+fi
+if $ipv6_has_internet && ! grep ':' /etc/resolv.conf; then
+    echo "nameserver $ipv6_dns1" >>/etc/resolv.conf
+    echo "nameserver $ipv6_dns2" >>/etc/resolv.conf
+fi