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authortv <tv@also>2011-05-28 12:38:14 +0200
committertv <tv@also>2011-05-28 12:38:14 +0200
commitb0a176af2c688524f38a17ffbfbd925055620743 (patch)
tree572048f4ce99e7eb49689541083f80560142e1bb
parent358b8914cd2568e6314ed9b051bfeedbea41b732 (diff)
update_tinc_hosts: only maybe update hosts
-rwxr-xr-xmodules/retiolum/bin/update_tinc_hosts40
1 files changed, 22 insertions, 18 deletions
diff --git a/modules/retiolum/bin/update_tinc_hosts b/modules/retiolum/bin/update_tinc_hosts
index 623ea315..31c8a398 100755
--- a/modules/retiolum/bin/update_tinc_hosts
+++ b/modules/retiolum/bin/update_tinc_hosts
@@ -1,29 +1,33 @@
-#!/bin/sh
-DIRNAME=`dirname $0`
-HERE=`readlink -f ${DIRNAME}`
+#! /bin/sh
+set -euf
-if test `id -u` != 0; then
+if test "${nosudo-false}" != true -a `id -u` != 0; then
echo "we're going sudo..." >&2
exec sudo "$0" "$@"
exit 23 # go to hell
fi
-case $1 in
- start)
- $0 stop
- echo "# BEGIN OF RETIOLUM" >> /etc/hosts
- $HERE/hosts >> /etc/hosts
- echo "# END OF RETIOLUM" >> /etc/hosts
+DIRNAME=`dirname $0`
+export PATH="`readlink -f $DIRNAME`:$PATH"
+hosts="${hosts-/etc/hosts}"
+
+bs='# BEGIN OF RETIOLUM'
+es='# END OF RETIOLUM'
+
+case "${1-imstupid}" in
+ (start|restart)
+ if grep -q "^$bs$" $hosts && grep -q "^$es$" $hosts; then
+ $0 stop
+ echo "$bs" >> $hosts
+ hosts >> $hosts
+ echo "$es" >> $hosts
+ fi
;;
- stop)
- sed -ie "/\# BEGIN OF RETIOLUM/,/\# END OF RETIOLUM/d" /etc/hosts
- ;;
- restart)
- $0 stop
- $0 start
+ (stop)
+ sed -ie "/^$bs$/,/^$es$/d" $hosts
;;
- *)
- echo "You are made of stupid!"
+ (*)
+ echo 'You are made of stupid!' >&2
exit 23
esac