postinst: change order.

[debian/iodine.git] / debian / postinst

diff --git a/debian/postinst b/debian/postinst
index 478d014166ed9af3e98dd6b8663beb1b4bb67c7e..477a89edecc868cc77e51451f45003a25b78b65d 100644 (file)
--- a/debian/postinst
+++ b/debian/postinst
@@ -3,8 +3,8 @@
 #
 # see: dh_installdeb(1)
 
+CONFIGFILE=/etc/default/iodine
 set -e
-
 . /usr/share/debconf/confmodule
 
 # summary of how this script can be called:
@@ -22,28 +22,55 @@ set -e
 
 case "$1" in
     configure)
-       # we need a tun device
-       if [ ! -e /dev/net/tun ] ; then
-               echo "Creating device /dev/net/tun ..."
-               cd /dev && WRITE_ON_UDEV=false ./MAKEDEV tun
-           fi
-           # and we want a special user
-           adduser --quiet --system --home /var/run/iodine iodine
-      # generate /etc/default/iodine
-      db_get iodine/start_daemon
-      START_IODINED=$RET
-      db_get iodine/daemon_options
-      IODINED_ARGS=$RET
-      db_get iodine/daemon_password
-      IODINED_PASSWORD=$RET
-      cat <<EOF > /etc/default/iodine
+        # we need a tun device
+        if [ ! -c /dev/net/tun ] && [ -x /dev/MAKEDEV ] ; then
+            echo "Creating device /dev/net/tun ..."
+            cd /dev
+            ./MAKEDEV tun || true
+        fi
+
+        # and we want a special user
+        adduser --quiet --system --home /run/iodine iodine
+
+        # generate/update /etc/default/iodine
+        if [ ! -e $CONFIGFILE ]; then
+            cat <<EOF >$CONFIGFILE
 # Default settings for iodine. This file is sourced from
 # /etc/init.d/iodined
-START_IODINED="$START_IODINED"
-IODINED_ARGS="$IODINED_ARGS"
-IODINED_PASSWORD="$IODINED_PASSWORD"
+START_IODINED=
+IODINED_ARGS=
+IODINED_PASSWORD=
 EOF
-      [ -e /etc/default/iodine ] && chmod 600 /etc/default/iodine
+        fi
+
+        db_get iodine/start_daemon
+        START_IODINED=$RET
+        db_get iodine/daemon_options
+        IODINED_ARGS=$RET
+        db_get iodine/daemon_password
+        IODINED_PASSWORD=$RET
+
+        cp -a -f $CONFIGFILE $CONFIGFILE.tmp
+
+        # If the admin deleted or commented some variables but then set
+        # them via debconf, (re-)add them to the conffile.
+        test -z "$START_IODINED" || grep -Eq '^ *START_IODINED=' $CONFIGFILE || \
+            echo "START_IODINED=" >> $CONFIGFILE
+        test -z "$IODINED_ARGS" || grep -Eq '^ *IODINED_ARGS=' $CONFIGFILE || \
+            echo "IODINED_ARGS=" >> $CONFIGFILE
+        test -z "$IODINED_PASSWORD" || grep -Eq '^ *IODINED_PASSWORD=' $CONFIGFILE || \
+            echo "IODINED_PASSWORD=" >> $CONFIGFILE
+
+        # PATTERN may contain variables, which will be interpolated every time the pattern search
+        # is evaluated, except for when the delimiter is a single quote.
+        # (perldoc perlop)
+        perl -p -e "s'^ *START_IODINED=.*'START_IODINED=\"$START_IODINED\"'; \
+                    s'^ *IODINED_ARGS=.*'IODINED_ARGS=\"$IODINED_ARGS\"'; \
+                    s'^ *IODINED_PASSWORD=.*'IODINED_PASSWORD=\"$IODINED_PASSWORD\"';" \
+            < $CONFIGFILE > $CONFIGFILE.tmp
+
+        mv -f $CONFIGFILE.tmp $CONFIGFILE
+        [ ! -e $CONFIGFILE ] || chmod 600 $CONFIGFILE
     ;;
 
     abort-upgrade|abort-remove|abort-deconfigure)
@@ -58,6 +85,14 @@ esac
 # tell debconf we are done. otherwise, it hangs waiting for the daemon.
 db_stop;
 
+# mask iodined.service if START_IODINED is not set to true
+# this mimicks the behaviour of sysvinit. cf. #832599
+if [ "$1" = "configure" ] ; then
+    if [ "$START_IODINED" != "true" ] ; then
+        deb-systemd-helper mask iodined.service >/dev/null || true
+    fi
+fi
+
 # dh_installdeb will replace this with shell code automatically
 # generated by other debhelper scripts.