#!/bin/sh /etc/rc.common
# Copyright (C) 2008 OpenWrt.org
START=50

USE_PROCD=1
PROG="/usr/sbin/snmpd"

CONFIGFILE="/var/run/snmpd.conf"

snmpd_agent_add() {
	local cfg="$1"

	config_get agentaddress "$cfg" agentaddress
	[ -n "$agentaddress" ] || return 0
	echo "agentaddress $agentaddress" >> $CONFIGFILE
}

snmpd_system_add() {
	local cfg="$1"
	config_get syslocation "$cfg" sysLocation
	[ -n "$syslocation" ] && echo "sysLocation $syslocation" >> $CONFIGFILE
	config_get syscontact "$cfg" sysContact
	[ -n "$syscontact" ] && echo "sysContact $syscontact" >> $CONFIGFILE
	config_get sysname "$cfg" sysName
	[ -n "$sysname" ] && echo "sysName $sysname" >> $CONFIGFILE
	config_get sysservice "$cfg" sysService
	[ -n "$sysservice" ] && echo "sysService $sysservice" >> $CONFIGFILE
	config_get sysdescr "$cfg" sysDescr
	[ -n "$sysdescr" ] && echo "sysDescr $sysdescr" >> $CONFIGFILE
	config_get sysobjectid "$cfg" sysObjectID
	[ -n "$sysobjectid" ] && echo "sysObjectID $sysobjectid" >> $CONFIGFILE
}

snmpd_com2sec_add() {
	local cfg="$1"
	config_get secname "$cfg" secname
	[ -n "$secname" ] || return 0
	config_get source "$cfg" source
	[ -n "$source" ] || return 0
	config_get community "$cfg" community
	[ -n "$community" ] || return 0
	echo "com2sec $secname $source $community" >> $CONFIGFILE
}

snmpd_com2sec6_add() {
	local cfg="$1"
	config_get secname "$cfg" secname
	[ -n "$secname" ] || return 0
	config_get source "$cfg" source
	[ -n "$source" ] || return 0
	config_get community "$cfg" community
	[ -n "$community" ] || return 0
	echo "com2sec6 $secname $source $community" >> $CONFIGFILE
}

snmpd_group_add() {
	local cfg="$1"
	config_get group "$cfg" group
	[ -n "$group" ] || return 0
	config_get version "$cfg" version
	[ -n "$version" ] || return 0
	config_get secname "$cfg" secname
	[ -n "$secname" ] || return 0
	echo "group $group $version $secname" >> $CONFIGFILE
}

snmpd_view_add() {
	local cfg="$1"
	config_get viewname "$cfg" viewname
	[ -n "$viewname" ] || return 0
	config_get type "$cfg" type
	[ -n "$type" ] || return 0
	config_get oid "$cfg" oid
	[ -n "$oid" ] || return 0
	# optional mask
	config_get mask "$cfg" mask
	echo "view $viewname $type $oid $mask" >> $CONFIGFILE
}

snmpd_access_add() {
	local cfg="$1"
	config_get group "$cfg" group
	[ -n "$group" ] || return 0
	config_get context "$cfg" context
	[ -n $context ] || return 0
	[ "$context" == "none" ] && context='""'
	config_get version "$cfg" version
	[ -n "$version" ] || return 0
	config_get level "$cfg" level
	[ -n "$level" ] || return 0
	config_get prefix "$cfg" prefix
	[ -n "$prefix" ] || return 0
	config_get read "$cfg" read
	[ -n "$read" ] || return 0
	config_get write "$cfg" write
	[ -n "$write" ] || return 0
	config_get notify "$cfg" notify
	[ -n "$notify" ] || return 0
	echo "access $group $context $version $level $prefix $read $write $notify" >> $CONFIGFILE
}

snmpd_pass_add() {
	local cfg="$1"
	local pass='pass'

	config_get miboid "$cfg" miboid
	[ -n "$miboid" ] || return 0
	config_get prog "$cfg" prog
	[ -n "$prog" ] || return 0
	config_get_bool persist "$cfg" persist 0
	[ $persist -ne 0 ] && pass='pass_persist'
	config_get priority "$cfg" priority
	priority=${priority:+-p $priority}
	echo "$pass $priority $miboid $prog" >> $CONFIGFILE
}

snmpd_exec_add() {
	local cfg="$1"

	config_get name "$cfg" name
	[ -n "$name" ] || return 0
	config_get prog "$cfg" prog
	[ -n "$prog" ] || return 0
	config_get args "$cfg" args
	config_get miboid "$cfg" miboid
	echo "exec $miboid $name $prog $args" >> $CONFIGFILE
}

snmpd_disk_add() {
        local cfg="$1"
        local disk='disk'

        config_get partition "$cfg" partition
        [ -n "$partition" ] || return 0
        config_get size "$cfg" size
        [ -n "$size" ] || return 0
        echo "$disk $partition $size" >> $CONFIGFILE
}

start_service() {
	[ -f "$CONFIGFILE" ] && rm -f "$CONFIGFILE"

	procd_open_instance

	config_load snmpd

	config_foreach snmpd_agent_add agent
	config_foreach snmpd_system_add system
	config_foreach snmpd_com2sec_add com2sec
	config_foreach snmpd_com2sec6_add com2sec6
	config_foreach snmpd_group_add group
	config_foreach snmpd_view_add view
	config_foreach snmpd_access_add access
	config_foreach snmpd_pass_add pass
	config_foreach snmpd_exec_add exec
	config_foreach snmpd_disk_add disk
	
	procd_set_param command $PROG -Lf /dev/null -f
	procd_set_param file $CONFIGFILE
	procd_set_param respawn

	for iface in $(ls /sys/class/net 2>/dev/null); do
		procd_append_param netdev "$iface"
	done

	procd_close_instance
}

stop_service() {
	[ -f "$CONFIGFILE" ] && rm -f "$CONFIGFILE"
}