Cross Reference: /illumos-gate/usr/src/cmd/svc/milestone/net-loc

	net-loc revision 03e9aa6d0661fbdf89669b14e801767d7e504fe8
0N/A#!/sbin/sh
3909N/A#
0N/A# CDDL HEADER START
0N/A#
0N/A# The contents of this file are subject to the terms of the
0N/A# Common Development and Distribution License (the "License").
2362N/A# You may not use this file except in compliance with the License.
0N/A#
2362N/A# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
0N/A# or http://www.opensolaris.org/os/licensing.
0N/A# See the License for the specific language governing permissions
0N/A# and limitations under the License.
0N/A#
0N/A# When distributing Covered Code, include this CDDL HEADER in each
0N/A# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
0N/A# If applicable, add the following below this CDDL HEADER, with the
0N/A# fields enclosed by brackets "[]" replaced with your own identifying
0N/A# information: Portions Copyright [yyyy] [name of copyright owner]
0N/A#
0N/A# CDDL HEADER END
2362N/A#
2362N/A#
2362N/A# Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
0N/A#
0N/A
0N/A. /lib/svc/share/smf_include.sh
0N/A. /lib/svc/share/net_include.sh
0N/A
0N/A# FMRI consts
0N/AAUTOFS_FMRI="svc:/system/filesystem/autofs"
0N/ADNS_CLIENT_FMRI="svc:/network/dns/client"
0N/AIPSEC_IKE_FMRI="svc:/network/ipsec/ike"
0N/AIPSEC_POLICY_FMRI="svc:/network/ipsec/policy"
0N/AIPFILTER_FMRI="svc:/network/ipfilter:default"
0N/ALDAP_CLIENT_FMRI="svc:/network/ldap/client"
1365N/ALOCATION_FMRI="svc:/network/location:default"
1365N/AMAPID_FMRI="svc:/network/nfs/mapid:default"
1365N/ANIS_CLIENT_FMRI="svc:/network/nis/client"
1365N/ANWAM_FMRI="svc:/network/physical:nwam"
1365N/A
1365N/A# commands
0N/ACP=/usr/bin/cp
0N/ADHCPINFO=/sbin/dhcpinfo
0N/ADOMAINNAME=/usr/bin/domainname
0N/AGREP=/usr/bin/grep
0N/ALDAPCLIENT=/usr/sbin/ldapclient
0N/AMKDIR=/usr/bin/mkdir
0N/AMV=/usr/bin/mv
0N/ANAWK=/usr/bin/nawk
0N/ANWAMADM=/usr/sbin/nwamadm
0N/ANWAMCFG=/usr/sbin/nwamcfg
0N/ARM=/usr/bin/rm
0N/ASED=/usr/bin/sed
0N/ASVCADM=/usr/sbin/svcadm
0N/ASVCCFG=/usr/sbin/svccfg
0N/ASVCPROP=/usr/bin/svcprop
0N/ATOUCH=/usr/bin/touch

# Path to directories
ETC_DEFAULT_DOMAIN=/etc/defaultdomain
NIS_BIND_PATH=/var/yp/binding
LEGACY_LOC_PATH=/etc/nwam/loc/Legacy
USER_LOC_PATH=/etc/nwam/loc/User
SCRIPT_PATH=/etc/svc/volatile/nwam

#
# echoes DHCP controlled interfaces separated by commas
#
# Don't parse the output of ifconfig(1M) because interfaces that haven't
# acquired a DHCP lease also have the DHCP flag set.
#
get_dhcp_interfaces () {
    #
    # 1. parse netstat(1M) output for v4 interfaces in BOUND
    #    or INFORMATION state
    # 2. make a space-separated list of interface names
    #
    netstat -D -f inet | $NAWK '
        $2 ~ /BOUND/ { printf "%s ", $1 }
        $2 ~ /INFORMATION/ { printf "%s ", $1 }'
}

#
# get_dhcpinfo <code/identifier>
#
# echoes the value received through each interface controlled by DHCP;
# multiple values are echoed as a space-separated list
#
# returns:
#   0 => property is set
#   1 => property is not set
#
get_dhcpinfo () {
    code=$1

    # Get all interfaces with DHCP control, IFS is " "
    interfaces=`get_dhcp_interfaces`

    info=""
    for intf in $interfaces; do
        val=`$DHCPINFO -i $intf $code`
        if [ $? -eq 0 ]; then
            if [ "$info" = "" ]; then
                info="$val"
            else
                info="$info $val"
            fi
        fi
    done
    echo $info
}

#
# set_smf_prop <fmri> <property name> <property value>
#
set_smf_prop () {
    $SVCCFG -s $1 setprop $2 = astring: "$3" && return
}

#
# refresh_svc <fmri>
#
# Refreshes the service.
#
refresh_svc () {
    $SVCADM refresh $1
}

#
# restart_svc <fmri>
#
# Restarts the service.
#
restart_svc () {
    $SVCADM restart $1
}

#
# start_svc <fmri>
#
# Starts the service.  If the service is already enabled, restarts it.  If
# it is not enabled, temporarily enables it.
#
start_svc () {
    if service_is_enabled $1; then
        $SVCADM restart $1
    else
        $SVCADM enable -t $1
    fi
}

#
# stop_svc <fmri>
#
# Temporarily disables the service.
#
stop_svc () {
    $SVCADM disable -t $1
}

#
# copy_default <dir> <file>
#
# Copies <dir>/<file>.dfl to <dir>/<file>
#
copy_default () {
    $CP -p $1/$2.dfl $1/$2
}

#
# do_dns <location>
#
# Installs DNS information on /etc/resolv.conf for location
#
# Returns 0 on success, 1 on failure
#
do_dns () {
    loc=$1
    file=/etc/resolv.conf

    # Write out to temporary file first
    $TOUCH $file.$$

    DNS_CONFIGSRC=`nwam_get_loc_list_prop $loc dns-nameservice-configsrc`
    if [ -z "$DNS_CONFIGSRC" ]; then
        echo "missing 'dns-nameservice-configsrc' property for '$loc'"
        return 1
    fi

    for configsrc in $DNS_CONFIGSRC; do
        case "$configsrc" in
        'manual')
            DNS_SERVERS=`nwam_get_loc_list_prop $loc \
                dns-nameservice-servers`
            if [ -z "$DNS_SERVERS" ]; then
                echo "DNS nameserver not set for '$loc'"
                return 1
            fi
            DNS_DOMAIN=`nwam_get_loc_prop $loc \
                dns-nameservice-domain`
            DNS_SEARCH=`nwam_get_loc_list_prop $loc \
                dns-nameservice-search`
            ;;
        'dhcp')
            DNS_DOMAIN=`get_dhcpinfo DNSdmain`
            DNS_SERVERS=`get_dhcpinfo DNSserv`
            # No DNS search info for IPv4
            ;;
        '*')
            echo "Unrecognized DNS configsrc ${configsrc}; ignoring"
            ;;
        esac

        # Write DNS settings
        if [ -n "$DNS_DOMAIN" ]; then
            echo "$DNS_DOMAIN" | $NAWK \
                '{ for (i = 1; i <= NF; i++) \
                print "domain ", $i }' >> $file.$$
        fi
        if [ -n "$DNS_SEARCH" ]; then
            echo "$DNS_SEARCH" | $NAWK \
                            '{ printf("search"); \
                for (i = 1; i <= NF; i++) printf(" %s", $i); \
                printf("\n") }' >> $file.$$
        fi
        if [ -n "$DNS_SERVERS" ]; then
            echo "$DNS_SERVERS" | $NAWK \
                '{ for (i = 1; i <= NF; i++) \
                print "nameserver ", $i }' >> $file.$$
        fi
    done

    # Finally, copy our working version to the real thing
    $MV -f $file.$$ $file
    start_svc $DNS_CLIENT_FMRI

    return 0
}

#
# do_nis <location>
#
# Installs NIS information on /var/yp/binding/ for location
#
# Returns 0 on success, 1 on failure
#
do_nis () {
    loc=$1

    NIS_CONFIGSRC=`nwam_get_loc_list_prop $loc nis-nameservice-configsrc`
    if [ -z "$NIS_CONFIGSRC" ]; then
        echo "missing 'nis-nameservice-configsrc' property for '$loc'"
        return 1
    fi

    for configsrc in $NIS_CONFIGSRC; do
        case "$configsrc" in
        'manual')
            NIS_SERVERS=`nwam_get_loc_list_prop $loc \
                nis-nameservice-servers`
            DEFAULT_DOMAIN=`nwam_get_loc_prop $loc default-domain`
            # user-specified default-domain always wins
            if [ -n "$DEFAULT_DOMAIN" ]; then
                $DOMAINNAME $DEFAULT_DOMAIN
                $DOMAINNAME > $ETC_DEFAULT_DOMAIN
            else
                echo "'domainname' not set for '$loc'"
                return 1
            fi
            ;;
        'dhcp')
            # Use only the first name
            DEFAULT_DOMAIN=`get_dhcpinfo NISdmain | \
                $NAWK '{ print $1 }'`
            NIS_SERVERS=`get_dhcpinfo NISservs`
            if [ "$domainname_set" = "false" ]; then
                $DOMAINNAME $DEFAULT_DOMAIN
                $DOMAINNAME > $ETC_DEFAULT_DOMAIN
            fi
            ;;
        '*')
            echo "Unrecognized NIS configsrc ${configsrc}; ignoring"
            ;;
        esac

        # Place NIS settings in appropriate directory/file.
        if [ ! -d "$NIS_BIND_PATH/$DEFAULT_DOMAIN" ]; then
            $MKDIR -p $NIS_BIND_PATH/$DEFAULT_DOMAIN
        fi
        if [ -n "$NIS_SERVERS" ]; then
            echo "$NIS_SERVERS" | $NAWK \
                '{ for (i = 1; i <= NF; i++) print $i }' \
                > $NIS_BIND_PATH/$DEFAULT_DOMAIN/ypservers
        fi
    done

    start_svc $NIS_CLIENT_FMRI

    return 0
}

#
# do_ldap <location>
#
# Installs LDAP information using ldapclient(1M) for location
#
# Returns 0 on success, 1 on failure
#
do_ldap () {
    loc=$1

    LDAP_CONFIGSRC=`nwam_get_loc_list_prop $loc ldap-nameservice-configsrc`
    if [ -z "$LDAP_CONFIGSRC" ]; then
        echo "missing 'ldap-nameservice-configsrc' property for '$loc'"
        return 1
    fi

    for configsrc in $LDAP_CONFIGSRC; do
        case "$configsrc" in
        'manual')
            LDAP_SERVERS=`nwam_get_loc_list_prop $loc \
                ldap-nameservice-servers`
            DEFAULT_DOMAIN=`nwam_get_loc_prop $loc default-domain`
            if [ -z $LDAP_SERVERS -o -z $DEFAULT_DOMAIN ]; then
                echo "LDAP configuration could not be set "\
                    "for '$loc'"
                return 1
            fi
            $DOMAINNAME $DEFAULT_DOMAIN
            $DOMAINNAME > $ETC_DEFAULT_DOMAIN
            ;;
        '*')
            echo "Invalid LDAP configsrc ${configsrc}; ignoring"
            ;;
        esac

        # Use ldapclient(1M) to initialize LDAP client settings.
        if [ -n "$DEFAULT_DOMAIN" -o -n "$LDAP_SERVERS" ]; then
            $LDAPCLIENT init -a domainName=$DEFAULT_DOMAIN \
                $LDAP_SERVERS
        fi
    done

    start_svc $LDAP_CLIENT_FMRI

    return 0
}

#
# do_ns <location>
#
# Installs different nameservices for location
#
# Returns 0 on success, 1 on failure
#
do_ns () {
    loc=$1

    #
    # Disable nameservices temporarily while we reconfigure.  Copy
    # /etc/nsswitch.files to /etc/nsswitch.conf first so that only "files"
    # are used.
    #
    $CP -p /etc/nsswitch.files /etc/nsswitch.conf
    stop_svc $DNS_CLIENT_FMRI
    stop_svc $NIS_CLIENT_FMRI
    stop_svc $LDAP_CLIENT_FMRI

    #
    # Remove /etc/defaultdomain and unset domainname(1M).  If NIS
    # and/or LDAP is configured, they will create /etc/defaultdomain
    # and set the domainname(1M).
    #
    $RM -f $ETC_DEFAULT_DOMAIN
    $DOMAINNAME " "

    NAMESERVICES=`nwam_get_loc_list_prop $loc nameservices`
    if [ -z "$NAMESERVICES" ]; then
        echo "missing 'nameservices' property for location '$loc'"
        return 1
    fi

    NAMESERVICES_CONFIG_FILE=`nwam_get_loc_prop \
        $loc nameservices-config-file`
    if [ -z "$NAMESERVICES_CONFIG_FILE" ]; then
        echo "missing 'nameservices-config-file' property for '$loc'"
        return 1
    fi
    $CP -p $NAMESERVICES_CONFIG_FILE /etc/nsswitch.conf

    for ns in $NAMESERVICES; do
        case "$ns" in
        'files')
            # no additional setup needed for files nameservice
            ;;
        'dns')
            do_dns $loc || return 1
            ;;
        'nis')
            do_nis $loc || return 1
            ;;
        'ldap')
            do_ldap $loc || return 1
            ;;
        '*')
            echo "Unrecognized nameservices value ${ns}; ignoring"
            ;;
        esac
    done

    #
    # Restart other related services
    #
    # We explicitly restart here, as restart will only have an
    # effect if the service is already enabled.  We don't want
    # to enable the service if it's currently disabled.
    #
    restart_svc $AUTOFS_FMRI

    return 0
}

#
# do_sec <location>
#
# If config properties are set, update the SMF property and refresh the
# service.  If config properties are not set, delete the SMF property and
# stop the service.
#
# Returns 0 on success, 1 on failure
#
do_sec () {
    loc=$1

    ike_file=`nwam_get_loc_prop $loc ike-config-file`
    pol_file=`nwam_get_loc_prop $loc ipsecpolicy-config-file`
    ipf_file=`nwam_get_loc_prop $loc ipfilter-config-file`
    ipf6_file=`nwam_get_loc_prop $loc ipfilter-v6-config-file`
    ipnat_file=`nwam_get_loc_prop $loc ipnat-config-file`
    ippool_file=`nwam_get_loc_prop $loc ippool-config-file`

    # IKE
    if [ -n "$ike_file" ]; then
        set_smf_prop $IPSEC_IKE_FMRI config/config_file $ike_file
        refresh_svc $IPSEC_IKE_FMRI
        start_svc $IPSEC_IKE_FMRI
    else
        stop_svc $IPSEC_IKE_FMRI
    fi

    # IPsec
    if [ -n "$pol_file" ]; then
        set_smf_prop $IPSEC_POLICY_FMRI config/config_file $pol_file
        refresh_svc $IPSEC_POLICY_FMRI
        start_svc $IPSEC_POLICY_FMRI
    else
        stop_svc $IPSEC_POLICY_FMRI
    fi

    # IPFilter
    refresh_ipf=false
    if [ -n "$ipf_file" ]; then
        if [ "$ipf_file" = "/none" ]; then
            set_smf_prop $IPFILTER_FMRI \
                firewall_config_default/policy "none"
        elif [ "$ipf_file" = "/deny" ]; then
            set_smf_prop $IPFILTER_FMRI \
                firewall_config_default/policy "deny"
        elif [ "$ipf_file" = "/allow" ]; then
            set_smf_prop $IPFILTER_FMRI \
                firewall_config_default/policy "allow"
        else
            # custom policy with policy file
            set_smf_prop $IPFILTER_FMRI \
                firewall_config_default/policy "custom"
            set_smf_prop $IPFILTER_FMRI \
                firewall_config_default/custom_policy_file $ipf_file
        fi
        refresh_ipf=true
    else
        # change policy to "none", no need to clear custom_policy_file
        set_smf_prop $IPFILTER_FMRI firewall_config_default/policy \
            "none"
        # IPFilter has to be refreshed to make the changes effective.
        # Don't set $refresh_ipf as it keeps IPFilter online rather
        # than disabled.  Refresh after IPFilter is disabled below.
    fi
    if [ -n "$ipf6_file" ]; then
        set_smf_prop $IPFILTER_FMRI config/ipf6_config_file $ipf6_file
        refresh_ipf=true
    fi
    if [ -n "$ipnat_file" ]; then
        set_smf_prop $IPFILTER_FMRI config/ipnat_config_file $ipnat_file
        refresh_ipf=true
    fi
    if [ -n "$ippool_file" ]; then
        set_smf_prop $IPFILTER_FMRI config/ippool_config_file \
            $ippool_file
        refresh_ipf=true
    fi

    if [ "$refresh_ipf" = "true" ]; then
        refresh_svc $IPFILTER_FMRI
        start_svc $IPFILTER_FMRI
    else
        stop_svc $IPFILTER_FMRI
        refresh_svc $IPFILTER_FMRI
    fi

    return 0
}

#
# update_nfs_file <new nfsv4 domain>
#
update_nfs_file () {
    domain=$1
    file=/etc/default/nfs

    #
    # For non-commented-out lines that set NFSMAPID_DOMAIN:
    #   if not previously added by nwam, comment out with a note
    #   if previously added by nwam, remove
    # For commented-out lines that set NFSMAPID_DOMAIN:
    #   if not commented out by NWAM, leave as-is
    #   if commented out by NWAM, remove
    # All other lines: leave as-is
    #
    $NAWK ' \
        $0 ~ /^NFSMAPID_DOMAIN=/ {
            if (index($0, "# Added by NWAM") == 0)
                printf("#%s # Commented out by NWAM\n", $0);
        }
        $0 ~ /^#NFSMAPID_DOMAIN=/ {
            if ($0 !~ /"# Commented out by NWAM"/)
                printf("%s\n", $0);
        }
        $1 !~ /NFSMAPID_DOMAIN=/ {
            printf("%s\n", $0);
        }' $file >$file.$$

    # Now add the desired value
    echo "NFSMAPID_DOMAIN=$domain # Added by NWAM" >> $file.$$

    # Finally, copy our working version to the real thing
    $MV -f $file.$$ $file
}

#
# do_nfsv4 <location>
#
# Updates NFSv4 domain for location
#
# Returns 0 on success, 1 on failure
#
do_nfsv4 () {
    loc=$1

    nfsv4domain=`nwam_get_loc_prop $loc nfsv4-domain`
    if [ $? -eq 0 ]; then
        update_nfs_file $nfsv4domain
        start_svc $MAPID_FMRI
    else
        stop_svc $MAPID_FMRI
    fi

    return 0
}

#
# activate_loc <location>
#
# Activates the given location
#
# Returns 0 on success, 1 on failure
#
activate_loc () {
    loc=$1

    echo activating $loc location

    #
    # if we fail to complete any part of the config,
    # stop activation work and report failure.
    #
    do_sec $loc && do_ns $loc && do_nfsv4 $loc && return 0
    return 1
}

#
# Script entry point
#
# Arguments to net-loc are
#   method ('start' or 'refresh')

#
# If nwam is not enabled, do nothing and return OK.
#
service_is_enabled $NWAM_FMRI || exit $SMF_EXIT_OK

#
# In a shared-IP zone we need this service to be up, but all of the work
# it tries to do is irrelevant (and will actually lead to the service
# failing if we try to do it), so just bail out.
# In the global zone and exclusive-IP zones we proceed.
#
smf_configure_ip || exit $SMF_EXIT_OK

case "$1" in

'start')
    #
    # We need to create the default (NoNet and Automatic)
    # locations, if they don't already exist.  So: first check
    # for the existence of each, and then run the appropriate
    # nwamcfg script(s) as needed. Restart nwamd if a location is
    # created, as it needs to read it in.
    #
    LOC_CREATED="false"
    $NWAMCFG list loc Automatic >/dev/null 2>&1
    if [ $? -eq 1 ]; then
        $NWAMCFG -f /etc/nwam/loc/create_loc_auto
        LOC_CREATED="true"
    fi

    $NWAMCFG list loc NoNet >/dev/null 2>&1
    if [ $? -eq 1 ]; then
        NONETPATH=/etc/nwam/loc/NoNet
        NONETFILES="ipf.conf ipf6.conf"
        for file in $NONETFILES; do
            copy_default $NONETPATH $file
        done
        $NWAMCFG -f /etc/nwam/loc/create_loc_nonet
        LOC_CREATED="true"
    fi

    if [ "$LOC_CREATED" = "true" ]; then
        refresh_svc $NWAM_FMRI
    fi

    # location selection/activation happens below
    ;;

'refresh')

    # location selection/activation happens below
    ;;

*)
    echo "Usage: $0 start|refresh"
    exit 1
    ;;

esac

#
# If the Legacy location doesn't exist and the file to create the Legacy
# location exists, create the Legacy location.  Make a copy of it as the user's
# intentions before upgrade.  Then activate the User location if nis is
# involved.  Because NIS affects more parts of the system (e.g. automounts) we
# are not willing to make NIS part of the Automatic location (i.e. enable it
# automatically based on external input) as we do with DHCP-driven DNS.
#
activate_user_loc=0
$NWAMCFG list loc Legacy >/dev/null 2>&1
if [ $? -eq 1 -a -f "$SCRIPT_PATH/create_loc_legacy" ]; then
    #
    # We built the script in and pointing to /etc/svc/volatile because we
    # may not have a writable filesystem in net-nwam.  So here we move the
    # components and rewrite the script to point at the writable filesystem.
    #
    $CP -r $SCRIPT_PATH/Legacy $LEGACY_LOC_PATH
    $MV $SCRIPT_PATH/create_loc_legacy $SCRIPT_PATH/vcreate_loc_legacy
    $SED -e's,/etc/svc/volatile/nwam/Legacy,/etc/nwam/loc/Legacy,' \
        $SCRIPT_PATH/vcreate_loc_legacy >$SCRIPT_PATH/create_loc_legacy
    $NWAMCFG -f $SCRIPT_PATH/create_loc_legacy
    loc_ver=`$SVCPROP -c -p location_upgrade/version $LOCATION_FMRI \
        2>/dev/null`
    if [ $? -eq 1 ]; then
        #
        # We are rewriting configuration variables from the Legacy
        # location to the User location.  Use variable ULP to keep REs
        # within a line.
        #
        ULP=$USER_LOC_PATH
        $SED -e's,Legacy,User,' \
            -e's,activation-mode=system,activation-mode=manual,' \
            -e"s,\(ipfilter-config-file=\).*/\(.*\),\1$ULP/\2," \
            -e"s,\(ipfilter-v6-config-file=\).*/\(.*\),\1$ULP/\2," \
            -e"s,\(ipnat-config-file=\).*/\(.*\),\1$ULP/\2," \
            -e"s,\(ippool-config-file=\).*/\(.*\),\1$ULP/\2," \
            -e"s,\(ike-config-file=\).*/\(.*\),\1$ULP/\2," \
            -e"s,\(ipsecpolicy-config-file=\).*/\(.*\),\1$ULP/\2," \
            $SCRIPT_PATH/create_loc_legacy | \
            $SED -e's,/etc/nwam/loc/User/none,/none,' \
            -e's,/etc/nwam/loc/User/allow,/allow,' \
            -e's,/etc/nwam/loc/User/deny,/deny,' \
            >$SCRIPT_PATH/create_loc_user
        #
        # We are creating the User location here.  The User location
        # is an appromixation of the machine configuration when the
        # user change or upgraded to this version of NWAM.  First
        # we make sure there isn't an existing User location or any
        # existing User location data.  We then copy all the data
        # from the Legacy location and create a location pointing at
        # that data.  Lastly we create a version property to note
        # that we have done this.
        #
        $NWAMCFG destroy loc User 2>/dev/null
        $RM -rf $USER_LOC_PATH
        $CP -r $LEGACY_LOC_PATH $USER_LOC_PATH
        $RM -f $USER_LOC_PATH/resolv.conf
        $NWAMCFG -f $SCRIPT_PATH/create_loc_user
        # The User location is activated if 'nis' is in a non comment
        # line of nsswitch.conf.
        $GREP -v "^#" $USER_LOC_PATH/nsswitch.conf |\
            $SED -e 's/[^:]*://' | $GREP nis >/dev/null 2>&1
        if [ $? -eq 0 ]; then
            activate_user_loc=1
        fi
        $SVCCFG -s $SMF_FMRI addpg location_upgrade application \
            2>/dev/null
        $SVCCFG -s $SMF_FMRI setprop location_upgrade/version = \
            astring: "1"
    fi
fi

#
# Activate a location.  If we've just finished upgrading, and
# the User location should be activated, do that (and use nwamadm
# to do so, so the enabled property gets set and nwamd knows this
# selection has been made).  Otherwise, if our location/selected
# property has a value, we activate that location; else we activate
# the NoNet location as a default value.
#
if [ $activate_user_loc -eq 1 ]; then
    $NWAMADM enable -p loc User
else
    sel_loc=`$SVCPROP -c -p location/selected $SMF_FMRI 2>/dev/null`
    if [ $? -eq 1 ]; then
        # location hasn't been selected; default to NoNet
        activate_loc NoNet
    else
        #
        # If the selected location does not exist, or if we fail
        # to activate it completely, we fall back to the NoNet
        # location.  Also poke nwamd, so it will check conditions
        # for a better choice.
        #
        $NWAMCFG list loc $sel_loc >/dev/null 2>&1
        if [ $? -eq 1 ]; then
            echo "location '$sel_loc' doesn't exist"
            activate_loc NoNet
            refresh_svc $NWAM_FMRI
        else
            # activate selected location
            if ! activate_loc $sel_loc; then
                echo "failed to activate '$sel_loc'"
                activate_loc NoNet
                refresh_svc $NWAM_FMRI
            fi
        fi
    fi
fi

exit $SMF_EXIT_OK