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pbot-vm: consolidate network enable/disable into one script

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Pragmatic Software 2024-04-12 13:07:27 -07:00
parent cc1445be90
commit 111f3bd2e7
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GPG Key ID: CC916B6E3C84ECCE
9 changed files with 79 additions and 33 deletions
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9
applets/pbot-vm/guest/bin/disable-network-iptables
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@ -1,9 +0,0 @@
#!/bin/sh
# disables all incoming, outgoing and forwarded traffic except incoming/established SSH
iptables -F
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -p tcp --dport 22 -j ACCEPT
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -P OUTPUT DROP

8
applets/pbot-vm/guest/bin/disable-network-nftables
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@ -1,8 +0,0 @@
#!/bin/sh
# disables all incoming, outgoing and forwarded traffic except incoming/established SSH
nft add table ip filter
nft add chain ip filter INPUT '{ type filter hook input priority 0; policy drop; }'
nft add chain ip filter OUTPUT '{ type filter hook output priority 0; policy drop; }'
nft 'add rule ip filter INPUT ct state related,established counter accept'
nft 'add rule ip filter INPUT tcp dport 22 counter accept'
nft 'add rule ip filter OUTPUT ct state related,established counter accept'

3
applets/pbot-vm/guest/bin/enable-network-iptables
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@ -1,3 +0,0 @@
#!/bin/sh
# removes all iptables rules to re-enable networking
iptables -F

3
applets/pbot-vm/guest/bin/enable-network-nftables
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@ -1,3 +0,0 @@
#!/bin/sh
# deletes filter table to re-enable networking
nft delete table ip filter

70
applets/pbot-vm/guest/bin/network Executable file
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@ -0,0 +1,70 @@
#!/bin/bash
Usage="$0 <on|off> [iptables|ipt|nftables|nft]"
DefaultMode="iptables"
EnableNetwork() {
case $1 in
iptables)
iptables -F ;;
nftables)
nft delete table ip filter ;;
esac
}
DisableNetwork() {
case $1 in
iptables)
iptables -F
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -p tcp --dport 22 -j ACCEPT
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -P OUTPUT DROP
;;
nftables)
nft add table ip filter
nft add chain ip filter INPUT '{ type filter hook input priority 0; policy drop; }'
nft add chain ip filter OUTPUT '{ type filter hook output priority 0; policy drop; }'
nft add rule ip filter INPUT ct state related,established counter accept
nft add rule ip filter INPUT tcp dport 22 counter accept
nft add rule ip filter OUTPUT ct state related,established counter accept
;;
esac
}
Main() {
case $1 in
on|off) ;;
*)
echo "Invalid command \`$1\`; usage: $Usage"
exit 1 ;;
esac
Toggle="$1"
case $2 in
iptables|ipt)
Mode="iptables" ;;
nftables|nft)
Mode="nftables" ;;
"")
Mode=$DefaultMode ;;
*)
echo "Invalid mode \`$2\`; usage: $Usage"
exit 1 ;;
esac
case $Toggle in
"on")
echo "Enabling networking with $Mode"
EnableNetwork "$Mode" ;;
"off")
echo "Disabling networking with $Mode"
DisableNetwork "$Mode" ;;
esac
}
Main "$@"

6
applets/pbot-vm/guest/provision/debian-trixie
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@ -25,8 +25,8 @@ apt install -y --no-install-recommends default-jre default-jdk
apt install -y --no-install-recommends libipc-run-perl libjson-xs-perl
# disable networking
./guest/bin/disable-network-iptables
./guest/bin/network off iptables
echo 'Networking disabled.'
echo 'To re-enable, run ./guest/bin/enable-networking-iptables'
echo 'To disable again, run ./guest/bin/disable-network-iptables'
echo 'To re-enable, run ./guest/bin/network on iptables'
echo 'To disable again, run ./guest/bin/network off iptables'

6
applets/pbot-vm/guest/provision/tumbleweed
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@ -22,8 +22,8 @@ zypper -n in --no-recommends clisp gcc-go java java-devel
zypper -n in perl-IPC-Run perl-JSON-XS
# disable networking
./guest/bin/disable-network-nftables
./guest/bin/network off nftables
echo 'Networking disabled.'
echo 'To re-enable, run ./guest/bin/enable-networking-nftables'
echo 'To disable again, run ./guest/bin/disable-network-nftables'
echo 'To re-enable, run ./guest/bin/network on nftables'
echo 'To disable again, run ./guest/bin/network off nftables'

3
applets/pbot-vm/host/bin/vm-exec
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@ -299,8 +299,7 @@ sub main() {
exit 2;
}
print $health "\n";
print $health "\n"; # request health
eval {
alarm 2;

4
lib/PBot/VERSION.pm
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@ -25,8 +25,8 @@ use PBot::Imports;
# These are set by the /misc/update_version script
use constant {
BUILD_NAME => "PBot",
BUILD_REVISION => 4747,
BUILD_DATE => "2024-04-10",
BUILD_REVISION => 4748,
BUILD_DATE => "2024-04-12",
};
sub initialize {}