1 files changed, 56 insertions, 0 deletions
diff --git a/retiolum/bin/update_tinc_hosts b/retiolum/bin/update_tinc_hosts
new file mode 100755
index 00000000..ce1be497
--- /dev/null
+++ b/retiolum/bin/update_tinc_hosts
@@ -0,0 +1,56 @@
+#! /bin/sh
+set -euf
+
+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
+
+list_hosts="$(
+  basename="`readlink -f "$0"`"
+  bindir="`dirname "$basename"`"
+  echo "$bindir/hosts"
+)"
+hosts() { "$list_hosts"; }
+
+hosts="${hosts-/etc/hosts}"
+
+bs='# BEGIN OF RETIOLUM'
+es='# END OF RETIOLUM'
+
+case "${*-I am made of stupid}" in
+  (start|restart)
+      hosts | egrep  "^(10|42)" | $0 replace magic
+    ;;
+  (stop)
+    $0 clear magic
+    ;;
+  ('print magic')
+    echo "$bs"
+    cat
+    echo "$es"
+    ;;
+  ('create magic')
+    $0 has magic || $0 print magic >> $hosts < /dev/null
+    $0 start
+    ;;
+  ('destroy magic')
+    if $0 has magic; then
+      cache="`cat $hosts`"
+      echo "$cache" | sed "/^$bs$/,/^$es$/d" > $hosts 
+    fi
+    ;;
+  ('has magic')
+    grep -q "^$bs$" $hosts && grep -q "^$es$" $hosts
+    ;;
+  ('replace magic')
+    $0 destroy magic && $0 print magic >> $hosts
+    ;;
+  ('clear magic')
+    $0 replace magic < /dev/null
+    ;;
+  (*)
+    echo 'Error 1: You are made of stupid!' >&2
+    exit 23
+esac