$NetBSD: patch-ae,v 1.18 2017/10/17 14:55:36 fhajny Exp $

- Default locations.
- Use 'su -' instead of just 'su'. Fixes priv delegation on SunOS
  and AIX where Erlang relies on $HOME set correctly. Use a portable
  su arg order while at it.
- At least SunOS has not wheel group.
- Portable grep calls.

--- ejabberdctl.template.orig	2017-09-28 13:21:11.000000000 +0000
+++ ejabberdctl.template
@@ -57,8 +57,8 @@ done
 
 # define ejabberd variables if not already defined from the command line
 : "${ETC_DIR:="{{sysconfdir}}/ejabberd"}"
-: "${LOGS_DIR:="{{localstatedir}}/log/ejabberd"}"
-: "${SPOOL_DIR:="{{localstatedir}}/lib/ejabberd"}"
+: "${LOGS_DIR:=@EJABBERD_LOGDIR@}"
+: "${SPOOL_DIR:=@EJABBERD_DB@}"
 : "${EJABBERD_CONFIG_PATH:="$ETC_DIR/ejabberd.yml"}"
 : "${EJABBERDCTL_CONFIG_PATH:="$ETC_DIR/ejabberdctl.cfg"}"
 [ -f "$EJABBERDCTL_CONFIG_PATH" ] && . "$EJABBERDCTL_CONFIG_PATH"
@@ -109,7 +109,7 @@ export ERL_LIBS
 exec_cmd()
 {
     case $EXEC_CMD in
-        as_install_user) su -c '"$0" "$@"' "$INSTALLUSER" -- "$@" ;;
+        as_install_user) su - "$INSTALLUSER" -c '"$@"' -- "$@" ;;
         as_current_user) "$@" ;;
     esac
 }
@@ -208,14 +208,14 @@ uid()
 # stop epmd if there is no other running node
 stop_epmd()
 {
-    "$EPMD" -names 2>/dev/null | grep -q name || "$EPMD" -kill >/dev/null
+    "$EPMD" -names 2>/dev/null | grep name >/dev/null || "$EPMD" -kill >/dev/null
 }
 
 # make sure node not already running and node name unregistered
 # if all ok, ensure runtime directory exists and make it current directory
 check_start()
 {
-    "$EPMD" -names 2>/dev/null | grep -q " ${ERLANG_NODE%@*} " && {
+    "$EPMD" -names 2>/dev/null | grep " ${ERLANG_NODE%@*} " >/dev/null && {
         pgrep -f "$ERLANG_NODE" >/dev/null && {
             echo "ERROR: The ejabberd node '$ERLANG_NODE' is already running."
             exit 4