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#!/bin/sh
#
# Startup/shutdown script for services managed by xinetd.
#
# Copyright (C) 2003 Charlie Brooks
#
# WARNING: Tested ONLY on Red Hat 7.3 and Fedora Core 2/4 at this time.
#
# Author: Charlie Brooks <ha@HBCS.Org>
# Description: given parameters of a service name and start|stop|status,
# will enable, disable or report on a specified xinetd service
# Config: all services must have a descriptor file in /etc/xinetd.d
# Support: linux-ha@lists.linux-ha.org
# License: GNU General Public License (GPL)
#
# OCF parameters are as below:
# OCF_RESKEY_service
#######################################################################
# Initialization:
. ${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs
#######################################################################
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="Xinetd">
<version>1.0</version>
<longdesc lang="en">
Resource script for Xinetd. It starts/stops services managed
by xinetd.
Note that the xinetd daemon itself must be running: we are not
going to start it or stop it ourselves.
Important: in case the services managed by the cluster are the
only ones enabled, you should specify the -stayalive option for
xinetd or it will exit on Heartbeat stop. Alternatively, you may
enable some internal service such as echo.
</longdesc>
<shortdesc lang="en">Xinetd resource agent</shortdesc>
<parameters>
<parameter name="service" unique="0" required="1">
<longdesc lang="en">
The service name managed by xinetd.
</longdesc>
<shortdesc lang="en">service name</shortdesc>
<content type="string" default="" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="20" />
<action name="stop" timeout="20" />
<action name="restart" timeout="40" />
<action name="status" depth="0" timeout="10" interval="10" start-delay="0" />
<action name="monitor" depth="0" timeout="10" interval="10" start-delay="0" />
<action name="validate-all" timeout="5" />
<action name="meta-data" timeout="5" />
</actions>
</resource-agent>
END
}
# don't rely on the pid file, but lookup xinetd in the list of
# processes
hup_inetd () {
pid=`ps -e -o pid,command | grep '/[x]inetd' | awk '{print $1}'`
if [ "$pid" ]; then
if kill -HUP $pid; then
:
else
ocf_log err "Could not SigHUP xinetd superdaemon!"
ocf_log err "perhaps we are booting after a system crash"
exit $OCF_ERR_GENERIC
fi
else
ocf_log err "xinetd superdaemon process not found!"
ocf_log err "perhaps we are currently booting the system."
exit $OCF_ERR_GENERIC
fi
}
xup_start () {
if [ "running" = "`xup_status`" ]; then
ocf_log info "Service $service already started"
exit $OCF_SUCCESS
fi
ocf_log "info" "$0: enabling in $RCFILE"
if $AWK '!/disable/' $RCFILE > $RCFILE.xup
then
if mv $RCFILE.xup $RCFILE
then
ocf_log "info" "$0: Starting"
hup_inetd
touch $PIDFILE
else
ocf_log "err" "Could not replace $RCFILE"
fi
else
ocf_log "err" "Could not rewrite $RCFILE!"
fi
}
xup_stop () {
if [ "stopped" = "`xup_status`" ]; then
ocf_log info "Service $service already stopped"
exit $OCF_SUCCESS
fi
ocf_log "info" "$0: disabling in $RCFILE"
if $AWK '!/disable/;/{/{printf "\tdisable\t\t\t= yes\n"}' $RCFILE >$RCFILE.xup
then
if mv $RCFILE.xup $RCFILE
then
ocf_log "info" "$0: Shutting down"
hup_inetd
rm -f $PIDFILE
else
ocf_log "err" "Could not replace $RCFILE"
fi
else
ocf_log "err" "Could not rewrite $RCFILE!"
fi
}
xup_usage () {
echo "Usage: $0 {start|stop|restart|status|monitor|validate-all|meta-data}"
return 0
}
xup_status () {
if [ -f $PIDFILE ]; then
echo running
return $OCF_SUCCESS
else
echo stopped
return $OCF_NOT_RUNNING
fi
}
#
# Check if the arg is a valid integer
#
CheckInteger() {
# Examples of valid integer: "1080", "1", "0080", "0", "0000"
# Examples of invalid integer: "1080bad", ""
case "$1" in
"") #empty string
false;;
*[!0-9]*) #got invalid char
false;;
*) #no invalid char, and has at least one digit, so is a good integer
true;;
esac
}
#
# Check if the arg is a valid umask
#
CheckUmask() {
# Examples of valid umask: "100", "1", "000", "0"
# Examples of invalid umask: "108", "bad", "1111" ""
case "$1" in
[0-7])
true;;
[0-7][0-7])
true;;
[0-7][0-7][0-7])
true;;
*)
false;;
esac
}
# Check (part of) the attributes based on xinetd.conf(5) and xinetd source code
# confparse.c
# parsers.c
# attr.h
check_attributes () {
# Empty these attributes before validating them
unset socket_type wait server user protocol port group instances \
type flags disable nice umask
VAR=""
for SECTION in $*; do
case $SECTION in
*=*) # Check to see if we need to export the previous name=value
# pair.
if [ -n "$VAR" ]; then
export "$VAR"
fi
# Save the "new" name=value pair in VAR
VAR=$SECTION
;;
*) # This section does not have an equal sign, therefore it is part of
# the *previous* name=value pair, thus we will append it to the
# previous name=value assignment.
VAR="$VAR $SECTION"
;;
esac
# A final cleanup step.
# Do we need to export VAR ?
if [ -n "$VAR" ]; then
export "$VAR"
fi
done
if [ $? -ne 0 ]; then
return $OCF_ERR_GENERIC
fi
case $disable in
"") disable=no # Default to no.
;;
yes|no) ;;
*) ocf_log err "Invalid value for disable [$disable] in $RCFILE, yes|no please"
exit $OCF_ERR_CONFIGURED
;;
esac
case $socket_type in
"") socket_type=dgram
# Default value for socket_type is dgram.
;;
stream|dgram|raw|seqpacket)
;;
*) ocf_log err "Invalid socket type $socket_type in $RCFILE"
exit $OCF_ERR_CONFIGURED
;;
esac
case $wait in # Wait has no default value.
yes|no) ;;
*) ocf_log err "Invalid waid [$wait] in $RCFILE, yes|no please"
exit $OCF_ERR_CONFIGURED
;;
esac
case $type in
# Default value for type is RPC or INTERNAL, determined at compile time.
# It may be a list in $RCFILE, however we only capture the first one.
""|RPC|INTERNAL|UNLISTED|SPECIAL|TCPMUX|TCPMUXPLUS)
;;
*) ocf_log err "Invalid service type [$type] in $RCFILE"
exit $OCF_ERR_CONFIGURED
;;
esac
if [ ! -z "$type" -a "INTERNAL" != "$type" ]; then
# Type is explicitly set to EXTERNAL, hence server and user are necessary.
case $server in
"") ocf_log err "Please specify server in $RCFILE"
exit $OCF_ERR_CONFIGURED
;;
/*) if [ -x $server ]; then
: OK
else
ocf_log err "Server $server is not executable"
exit $OCF_ERR_CONFIGURED
fi
;;
*) ocf_log err "Server $server is not of obsolute path"
exit $OCF_ERR_CONFIGURED
;;
esac
case $user in
"") ocf_log err "Please specify user in $RCFILE"
exit $OCF_ERR_CONFIGURED
;;
*) getent passwd $user >/dev/null 2>&1
if [ $? -ne 0 ]; then
ocf_log err "User $user does not exist!"
exit $OCF_ERR_CONFIGURED
fi
;;
esac
# Protocol is necessary when type is MUX
if [ $type = "TCPMUX" -o $type ="TCPMUXPLUS" ]; then
case $protocol in
"") ocf_log err "Please specify protocol in $RCFILE"
exit $OCF_ERR_CONFIGURED
;;
*) get protocols $protocol >/dev/null 2>&1
if [ $? -ne 0 ]; then
ocf_log err "Invalid protocol [$protocol] in $RCFILE"
exit $OCF_ERR_CONFIGURED
fi
;;
esac
fi
fi
case $group in
"") ;; # OK to be empty, the group for $user is used
*) getent group $group >/dev/null 2>&1
if [ $? -ne 0 ]; then
ocf_log err "Group $group does not exist!"
exit $OCF_ERR_CONFIGURED
fi
;;
esac
case $flags in
# Default value for flags is REUSE.
# It may be a list in $RCFILE, however we only capture the first one.
"") flags=RESUME
;;
REUSE|INTERCEPT|NORETRY|IDONLY|NAMEINARGS|NODELAY|KEEPALIVE|NOLIBWRAP|SENSOR|IPv4|IPv6) ;;
*) ocf_log err "Invalid flags [$flags] in $RCFILE"
exit $OCF_ERR_CONFIGURED
;;
esac
case $instances in
""|[Uu][Nn][Ll][Ii][Mm][Ii][Ti][Ee][Dd]) ;;
*) if CheckInteger $instances; then
: OK
else
ocf_log err "Invalid instances [$instances] in $RCFILE, non-negative integer expected"
exit $OCF_ERR_CONFIGURED
fi
;;
esac
case $nice in
"") ;;
*) local foo=`echo $nice | sed s/^-//`
if CheckInteger $foo; then
: OK
else
ocf_log err "Invalid nice [$nice] in $RCFILE, integer expected"
exit $OCF_ERR_CONFIGURED
fi
;;
esac
if [ ! -z $umask ]; then
if CheckUmask $umask; then
: OK
else
ocf_log err "Invalid umask [$umask] in $RCFILE"
exit $OCF_ERR_CONFIGURED
fi
fi
}
xup_validate_all () {
check_binary $AWK
# Parse the $RCFILE for necessary attributes, assume $RCFILE does not
# contain "include" or "includedir" directives.
space="[ \t]*"
leading_space="^$space"
trailing_space="$space$"
comment="$space\#"
# Strip comments, delete blank lines.
stripped=`sed -e "/^$comment/d" -e "/=$trailing_space/d" -e "/$leading_space$/d" $RCFILE`
stripped=`echo $stripped`
# At this stage, stripped="service <service-name> { attribute-list }".
case $stripped in
*#*)
ocf_log err "Descriptor file $RCFILE contains extra \"#\", which is forbidden"
exit $OCF_ERR_CONFIGURED
;;
service*)
case $stripped in
*[!\ \ +-]=*)
ocf_log err "Attribute needs a space before operator ="
exit $OCF_ERR_CONFIGURED
;;
*[!\ \ ][+-]=*)
ocf_log err "Attribute needs a space before operator [+-]="
exit $OCF_ERR_CONFIGURED
;;
*) ;;
esac
# Strip leading "service" keyword, remove spaces surrounding "=".
stripped=`echo $stripped | sed -e "s/^service//" -e "s/-=/ /g" \
-e "s/+=/=/g" -e "s/$space=$space/=/g"`
# At this stage, stripped=" <service-name> { attribute-list }",
# note that the leading space before <service-name> is significant.
case $stripped in
" "*)
stripped=`echo $stripped | sed -e "s/$leading_space[^ \t]\+$space//"`
# At this stage, stripped="{ attribute-list }"
case $stripped in
{*})
stripped=`echo $stripped | sed -e "s/^{//" -e "s/}$//"`
# At this stage, stripped=<attribute-list>
# echo $stripped
check_attributes "$stripped"
;;
*)
ocf_log err "Attrbute list should be contained in {}"
exit $OCF_ERR_CONFIGURED
;;
esac
;;
*)
ocf_log err "Service name should follow the service key word"
exit $OCF_ERR_CONFIGURED
;;
esac
;;
*)
ocf_log err "Service key word is necessary in $RCFILE"
exit $OCF_ERR_CONFIGURED
;;
esac
}
if
( [ $# -ne 1 ] )
then
xup_usage
exit $OCF_ERR_ARGS
fi
# These operations do not require OCF instance parameters to be set
case "$1" in
meta-data)
meta_data
exit $OCF_SUCCESS
;;
usage)
xup_usage
exit $OCF_SUCCESS
;;
*) ;;
esac
if
[ -z "$OCF_RESKEY_service" ]
then
ocf_log err "Please set OCF_RESKEY_service to the service managed by Xinetd"
if [ "$1" = "start" ]; then
exit $OCF_ERR_ARGS
else
exit $OCF_NOT_RUNNING
fi
fi
service=$OCF_RESKEY_service
RCFILE=/etc/xinetd.d/$service
PIDFILE=$HA_VARRUN/xup$service
# Make sure the OCF_RESKEY_service is a valid xinetd service name
if [ ! -f $RCFILE ]; then
ocf_log err "Service descriptor $RCFILE not found!"
if [ "$1" = "start" ]; then
exit $OCF_ERR_ARGS
else
exit $OCF_NOT_RUNNING
fi
fi
# See how we were called.
case "$1" in
start)
xup_start
;;
stop)
xup_stop
;;
restart)
$0 stop
$0 start
;;
status)
xup_status
;;
monitor)
xup_status > /dev/null
;;
validate-all)
xup_validate_all
;;
*)
xup_usage
exit $OCF_ERR_UNIMPLEMENTED
esac
exit $?

File Metadata

Mime Type
text/x-shellscript
Expires
Sun, Jul 20, 7:31 PM (3 h, 15 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
2019254
Default Alt Text
Xinetd (11 KB)

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