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added a security check for overwriting the hostname inside the jails rc.conf

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Culsu
2020-11-30 22:22:36 +01:00
parent a041a0d0cb
commit 62617b89cf
1 changed files with 6 additions and 6 deletions
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jaildk
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@@ -764,7 +764,7 @@ Create a new jail from template."
jaildk_create() { jaildk_create() {
jail=$1 jail=$1
# $jail gets overwritten in jaildk_clone or somewhere... # $jail gets overwritten in jaildk_clone or some subcall to .template :-( ...
newjail=$jail newjail=$jail
src=.template src=.template
@@ -782,11 +782,11 @@ jaildk_create() {
jaildk_clone -s $src -d $jail -o $srcversion -n $newversion jaildk_clone -s $src -d $jail -o $srcversion -n $newversion
# some perl magic to extract the hostname (if any) from /etc/jail.conf - and write it into the jails rc.conf # some perl magic to extract the hostname (if any) from /etc/jail.conf - and write it into the jails rc.conf
jailhostname=$(cat /etc/jail.conf | tr -d '\t\r\n ' | perl -ne '$_ =~ /.*'"$newjail"'(\{(?:\{.*\}|[^{])*\})|\w+/; print $1;' | grep -oE 'hostname=[^;]+' | cut -d= -f2) jailhostname=$(cat /etc/jail.conf | tr -d '\t\r\n ' | perl -ne '$_ =~ /.*'"$newjail"'(\{(?:\{.*\}|[^{])*\})|\w+/; print $1;' | grep -oE 'hostname=[^;]+' | cut -d= -f2)
if [ -n "$jailhostname" ]; then
echo "new name: $jailhostname" echo "new name: $jailhostname"
echo "in path $j/etc/$jail/local-etc-$newversion/rc.conf" echo "in path $j/etc/$jail/local-etc-$newversion/rc.conf"
sed -iE 's/^hostname.*$/hostname="'"$jailhostname"'"/' $j/etc/$newjail/local-etc-$newversion/rc.conf sed -iE 's/^hostname.*$/hostname="'"$jailhostname"'"/' $j/etc/$newjail/local-etc-$newversion/rc.conf
fi
} }
remove() { remove() {