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Update InstallNET.sh

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Molly Lau 2022-12-08 23:35:15 +09:00 committed by GitHub
parent 9ef249b7b3
commit c1c7966154
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1 changed files with 25 additions and 16 deletions
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Linux_reinstall/InstallNET.sh
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@ -378,10 +378,7 @@ function ipv4Calc() {
FirstIP="$tmpNetwork"
LastIP="$tmpNetwork"
}
echo "Network: $tmpNetwork"
echo "Broadcast: $tmpBroadcast"
echo "FirstIP: $FirstIP"
echo "LastIP: $LastIP"
echo -e "Network: $tmpNetwork\nBroadcast: $tmpBroadcast\nFirstIP: $FirstIP\nLastIP: $LastIP\n"
}
function getDisk(){
@ -895,19 +892,22 @@ fi
if [[ "$setNet" == "0" ]]; then
dependence ip
[[ -n "$interface" ]] || interface=`getInterface "$CurrentOS" "$CurrentOSVer"`
iAddr=`ip addr show | grep -wv "lo\|host" | grep -w "inet" | grep "$interface" | grep -w "scope global\|link" | head -n 1 | awk -F " " '{for (i=2;i<=NF;i++)printf("%s ", $i);print ""}' | awk '{print$1}'`
iAddr=`ip addr show | grep -wv "lo\|host" | grep -w "inet" | grep "$interface" | grep -w "scope global*\|link*" | head -n 1 | awk -F " " '{for (i=2;i<=NF;i++)printf("%s ", $i);print ""}' | awk '{print$1}'`
ipAddr=`echo ${iAddr} | cut -d'/' -f1`
ipMask=`netmask $(echo ${iAddr} | cut -d'/' -f2)`
ipAddrFirst=`echo "$ipAddr" | cut -d'.' -f 1,2`
# In most situation, at least 99.9% probability, the first hop of the network should be the same as the available gateway.
# But in 0.1%, they are actually different.
# Because one of the first hop of a tested machine is 5.45.72.1, I told Debian installer this router as a gateway
# But installer said the correct gateway should be 5.45.76.1, in a typical network, for example, your home,
# the default gateway is the same as the first route hop of the machine, it may be 192.168.0.1.
# If possible, we should configure out the real available gateway of the network.
FirstRoute=`ip route show default | grep "via" | grep -w "dev $interface*" | head -n 1 | awk -F " " '{for (i=3;i<=NF;i++)printf("%s ", $i);print ""}' | awk '{print$1}'`
FirstRoute=`ip route show default | grep -w "via" | grep -w "dev $interface*" | head -n 1 | awk -F " " '{for (i=3;i<=NF;i++)printf("%s ", $i);print ""}' | awk '{print$1}'`
# We should find it in ARP, the first hop IP and gateway IP is managed by the same device, use device mac address to configure it out.
RouterMac=`arp -n | grep "$FirstRoute" | awk '{print$3}'`
FrFirst=`echo "$FirstRoute" | cut -d'.' -f 1,2`
FrThird=`echo "$FirstRoute" | cut -d'.' -f 3`
# Print all matched available gateway.
ipGates=`ip route show | grep -v "via" | grep -w "dev" | grep "$interface" | grep -w "proto*" | grep "scope global\|link src $ipAddr" | awk '{print$1}'`
ipGates=`ip route show | grep -v "via" | grep -w "dev $interface*" | grep -w "proto*" | grep -w "scope global\|link src $ipAddr*" | awk '{print$1}'`
# Figure out the line of this list.
ipGateLine=`echo "$ipGates" | wc -l`
# The line determines the cycling times.
@ -917,19 +917,28 @@ if [[ "$setNet" == "0" ]]; then
# Intercept a standard IPv4 address.
tmpIgAddr=`echo $tmpIpGate | cut -d'/' -f1`
# Intercept the prefix of the gateway.
tmpIgPrefix=`echo $tmoIpGate | cut -d'/' -f2`
# Calculate the first ip in all network segment, it should be the gateway of this network.
tmpIgPrefix=`echo $tmpIpGate | cut -d'/' -f2`
# Calculate the first ip in all network segment, it should be the the same range with gateway in this network.
minIpGate=`ipv4Calc "$tmpIgAddr" "$tmpIgPrefix" | grep "FirstIP:" | awk '{print$2}'`
# Intercept the class A and B number of the current ip address of gateway.
# Intercept the A and B class of the current ip address of gateway.
tmpIpGateFirst=`echo "$minIpGate" | cut -d'.' -f 1,2`
tmpIpGateThird=`echo "$minIpGate" | cut -d'.' -f 3`
# If the class A and B number of the current local ip address is as same as current gateway, this gateway may a valid one.
if [[ "$ipAddrFirst" == "$tmpIpGateFirst" ]]; then
ipGate="$minIpGate"
break
fi
[[ "$FrFirst" == "$tmpIpGateFirst" ]] && {
if [[ "$FrThird" == "$tmpIpGateThird" ]]; then
ipGate="$FirstRoute"
break
elif [[ "$FrThird" != "$tmpIpGateThird" ]]; then
# The A, B and C class address of min ip gate.
tmpMigFirst=`echo $minIpGate | cut -d'.' -f 1,2,3`
# Search it in ARP, it's belonged to the same network device which has been distinguished by mac address of first hop of the IP.
ipGate=`arp -n | grep "$tmpMigFirst" | grep "$RouterMac" | awk '{print$1}'`
break
fi
}
done
# If there is no one of other gateway in this current network, use if access the public internet, the first hop route of this machine as the gateway.
[[ "$ipGates" == "" ]] && ipGate="$FirstRoute"
[[ "$ipGates" == "" || "$ipGate" == "" ]] && ipGate="$FirstRoute"
[[ ! "$IPStackType" == "IPv4Stack" ]] && {
i6Addr=`ip -6 addr show | grep -wv "lo\|host" | grep -wv "link" | grep -w "inet6" | grep "scope" | grep "global" | head -n 1 | awk -F " " '{for (i=2;i<=NF;i++)printf("%s ", $i);print ""}' | awk '{print$1}'`