#!/sbin/sh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#

#
# Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T.
# All rights reserved.
# Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
# Copyright 2012 Milan Jurik. All rights reserved.
# Copyright 2021 Tintri by DDN, Inc. All rights reserved.
#
# Copyright 2020 OmniOS Community Edition (OmniOSce) Association.

. /lib/svc/share/smf_include.sh
. /lib/svc/share/net_include.sh

#
# 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

# Make sure that the libraries essential to this stage of booting can be found.
LD_LIBRARY_PATH=/lib; export LD_LIBRARY_PATH

smf_netstrategy

if smf_is_globalzone; then
	net_reconfigure || exit $SMF_EXIT_ERR_CONFIG

	# Update PVID on interfaces configured with VLAN 1
	update_pvid

	#
	# Upgrade handling. The upgrade file consists of a series of dladm(8)
	# commands. Note that after we are done, we cannot rename the upgrade
	# script file as the file system is still read-only at this point.
	# Defer this to the manifest-import service.
	#
	upgrade_script=/var/svc/profile/upgrade_datalink
	if [ -f "${upgrade_script}" ]; then
		. "${upgrade_script}"
	fi

	#
	# Upgrade handling for ibd:
	# After we are done with the upgrade handling, we can not set the
	# ibd/ibd_upgraded property to "true" as the file system is
	# read-only at this point. It will be done later by ibd-post-upgrade
	# service.
	#
	if [ -x /sbin/ibd_upgrade ]; then
		ibd_upgraded=`/bin/svcprop -c -p ibd/ibd_upgraded \
		    $SMF_FMRI 2> /dev/null`
		if [ "$ibd_upgraded" != "true" ]; then
			/sbin/ibd_upgrade -v
		fi
	fi

	#
	# Bring up simnets, link aggregations and initialize security objects.
	# Note that link property initialization is deferred until after
	# IP interfaces are plumbed to ensure that the links will not
	# be unloaded (and the property settings lost). We should bring
	# up simnets prior to VLANs/Aggrs to enable creation of VLANs/Aggrs
	# over simnets.
	#
	/sbin/dladm up-simnet
	/sbin/dladm up-aggr
	/sbin/dladm up-vlan
	/sbin/dladm up-part
	/sbin/dladm init-secobj
	#
	# Bring up VNICs
	#
	/sbin/dladm up-vnic
	#
	# Create flows via flowadm.
	#
	/sbin/flowadm init-flow
	#
	# Bring up overlays
	# Note that there may be VNICs configured over these overlays but
	# these cannot be brought up until the network interface on which
	# varpd will listen is enabled, and that doesn't happen until
	# near the end of this script. Therefore VNIC initialisation is
	# repeated below if overlays are present.
	#
	/sbin/dladm up-overlay
fi

#
# If the system was net booted by DHCP, hand DHCP management off to the
# DHCP agent (ifconfig communicates to the DHCP agent through the
# loopback interface).
#
if [ -n "$_INIT_NET_IF" -a "$_INIT_NET_STRATEGY" = "dhcp" ]; then
	/sbin/dhcpagent -a
fi

#
# The network initialization is done early to support diskless and
# dataless configurations.  For IPv4 interfaces that were configured by
# the kernel (e.g.  those on diskless machines) and not configured by
# DHCP, reset the netmask using the local "/etc/netmasks" file if one
# exists, and then reset the broadcast address based on the netmask.
#
/sbin/ifconfig -auD4 netmask + broadcast +

is_iptun ()
{
	intf=$1
	# Is this a persistent IP tunnel link?
	/sbin/dladm show-iptun -P $intf > /dev/null 2>&1
	if [ $? -eq 0 ]; then
		return 0
	fi
	# Is this an implicit IP tunnel (i.e., ip.tun0)
	ORIGIFS="$IFS"
	IFS="$IFS."
	set -- $intf
	IFS="$ORIGIFS"
	if [ $# -eq 2 -a \( "$1" = "ip" -o "$1" = "ip6" \) ]; then
		#
		# It looks like one, but another type of link might be
		# using a name that looks like an implicit IP tunnel.
		# If dladm show-link -P finds it, then it's not an IP
		# tunnel.
		#
		/sbin/dladm show-link -Pp $intf > /dev/null 2>&1
		if [ $? -eq 0 ]; then
			return 1
		else
			return 0
		fi
	fi
	return 1
}

bringup_ipif()
{
	for showif_output in `\
	    /sbin/ipadm show-if -p -o ifname,state,current`; do
		intf=`echo $showif_output | /usr/bin/cut -f1 -d:`
		state=`echo $showif_output | /usr/bin/cut -f2 -d:`
		current=`echo $showif_output | /usr/bin/cut -f3 -d:`
		if  [[ "$state" != "disabled" && $current != *Z* ]]; then
			#
			# skip if not a persistent interface, or if it should
			# get IP configuration from the global zone ('Z' flag
			# is set)
			#
			continue;
		elif is_iptun $intf; then
			# skip IP tunnel interfaces plumbed by net-iptun
			continue;
		elif [ -f /etc/hostname.$intf ] || \
		    [ -f /etc/hostname6.$intf ]; then
			if [[ $current != *Z* ]]; then
				echo "found /etc/hostname.$intf "\
				    "or /etc/hostname6.$intf, "\
				    "ignoring ipadm configuration" > /dev/msglog
				continue;
			else
				echo "Ignoring /etc/hostname*.$intf" \
				    > /dev/msglog
				{
					/sbin/ifconfig $intf unplumb
					/sbin/ifconfig $intf inet6 unplumb
				} > /dev/null 2>&1
			fi
		fi

		# Enable the interface managed by ipadm
		/sbin/ipadm enable-if -t $intf
	done
}

#
# All the IPv4 and IPv6 interfaces are plumbed before doing any
# interface configuration.  This prevents errors from plumb failures
# getting mixed in with the configured interface lists that the script
# outputs.
#

#
# First deal with /etc/hostname
#
# Get the list of IPv4 interfaces to configure by breaking
# /etc/hostname.* into separate args by using "." as a shell separator
# character.
#
interface_names="`echo /etc/hostname.*[0-9] 2>/dev/null`"
if [ "$interface_names" != "/etc/hostname.*[0-9]" ]; then
	ORIGIFS="$IFS"
	IFS="$IFS."
	set -- $interface_names
	IFS="$ORIGIFS"
	while [ $# -ge 2 ]; do
		shift
		intf_name=$1
		while [ $# -gt 1 -a "$2" != "/etc/hostname" ]; do
			intf_name="$intf_name.$2"
			shift
		done
		shift

		# skip IP tunnel interfaces plumbed by net-iptun.
		if is_iptun $intf_name; then
			continue
		fi

	        read one rest < /etc/hostname.$intf_name
		if [ "$one" = ipmp ]; then
			ipmp_list="$ipmp_list $intf_name"
		else
			inet_list="$inet_list $intf_name"
		fi
	done
fi

#
# Get the list of IPv6 interfaces to configure by breaking
# /etc/hostname6.* into separate args by using "." as a shell separator
# character.
#
interface_names="`echo /etc/hostname6.*[0-9] 2>/dev/null`"
if [ "$interface_names" != "/etc/hostname6.*[0-9]" ]; then
	ORIGIFS="$IFS"
	IFS="$IFS."
	set -- $interface_names
	IFS="$ORIGIFS"
	while [ $# -ge 2 ]; do
		shift
		intf_name=$1
		while [ $# -gt 1 -a "$2" != "/etc/hostname6" ]; do
			intf_name="$intf_name.$2"
			shift
		done
		shift

		# skip IP tunnel interfaces plumbed by net-iptun.
		if is_iptun $intf_name; then
			continue
		fi

	        read one rest < /etc/hostname6.$intf_name
		if [ "$one" = ipmp ]; then
			ipmp6_list="$ipmp6_list $intf_name"
		else
			inet6_list="$inet6_list $intf_name"
		fi
	done
fi

#
# Create all of the IPv4 IPMP interfaces.
#
if [ -n "$ipmp_list" ]; then
	set -- $ipmp_list
	while [ $# -gt 0 ]; do
		if /sbin/ifconfig $1 ipmp; then
			ipmp_created="$ipmp_created $1"
		else
			ipmp_failed="$ipmp_failed $1"
		fi
		shift
	done
	[ -n "$ipmp_failed" ] && warn_failed_ifs "create IPv4 IPMP" \
	    "$ipmp_failed"
fi

#
# Step through the IPv4 interface list and try to plumb every interface.
# Generate list of plumbed and failed IPv4 interfaces.
#
if [ -n "$inet_list" ]; then
	set -- $inet_list
	while [ $# -gt 0 ]; do
		/sbin/ifconfig $1 plumb
		if /sbin/ifconfig $1 inet >/dev/null 2>&1; then
			inet_plumbed="$inet_plumbed $1"
		else
			inet_failed="$inet_failed $1"
		fi
		shift
	done
	[ -n "$inet_failed" ] && warn_failed_ifs "plumb IPv4" "$inet_failed"
fi

# Run autoconf to connect to a WLAN if the interface is a wireless one
if [ -x /sbin/wificonfig -a -n "$inet_plumbed" ]; then
	set -- $inet_plumbed
	while [ $# -gt 0 ]; do
			if [ -r /dev/wifi/$1 ]; then
				/sbin/wificonfig -i $1 startconf >/dev/null
			fi
		shift
	done
fi

#
# Step through the IPv6 interface list and plumb every interface.
# Generate list of plumbed and failed IPv6 interfaces.  Each plumbed
# interface will be brought up later, after processing any contents of
# the /etc/hostname6.* file.
#
if [ -n "$inet6_list" ]; then
	set -- $inet6_list
	while [ $# -gt 0 ]; do
		/sbin/ifconfig $1 inet6 plumb
		if /sbin/ifconfig $1 inet6 >/dev/null 2>&1; then
			inet6_plumbed="$inet6_plumbed $1"
		else
			inet6_failed="$inet6_failed $1"
		fi
		shift
	done
	[ -n "$inet6_failed" ] && warn_failed_ifs "plumb IPv6" "$inet6_failed"
fi

#
# Create all of the IPv6 IPMP interfaces.
#
if [ -n "$ipmp6_list" ]; then
	set -- $ipmp6_list
	while [ $# -gt 0 ]; do
		if /sbin/ifconfig $1 inet6 ipmp; then
			ipmp6_created="$ipmp6_created $1"
		else
			ipmp6_failed="$ipmp6_failed $1"
		fi
		shift
	done
	[ -n "$ipmp6_failed" ] && warn_failed_ifs "create IPv6 IPMP" \
	    "$ipmp6_failed"
fi

#
# Upgrade ipadm.conf.
#
if /usr/bin/grep -q _family /etc/ipadm/ipadm.conf; then
	oldifs=$(/usr/bin/sed -En \
	    's/^_ifname=([a-z0-9_]+);_family=[0-9]+;$/\1/p' \
	    /etc/ipadm/ipadm.conf | /usr/bin/sort -u)
	/usr/bin/sed -i '/_family/d' /etc/ipadm/ipadm.conf
	for oldif in $oldifs; do
		/usr/bin/printf \
		    "_ifname=%s;_ifclass=0;_families=2,26;\n" \
		    $oldif >> /etc/ipadm/ipadm.conf
	done
fi

#
# Finally configure interfaces set up with ipadm. Any /etc/hostname*.intf
# files take precedence over ipadm defined configurations except when
# we are in a non-global zone and Layer-3 protection of IP addresses is
# enforced on the interface by the global zone.
#
bringup_ipif

#
# Process the /etc/hostname[6].* files for IPMP interfaces.  Processing these
# before non-IPMP interfaces avoids accidental implicit IPMP group creation.
#
[ -n "$ipmp_created" ] && if_configure inet "IPMP" $ipmp_created
[ -n "$ipmp6_created" ] && if_configure inet6 "IPMP" $ipmp6_created

#
# Process the /etc/hostname[6].* files for non-IPMP interfaces.
#
[ -n "$inet_plumbed" ] && if_configure inet "" $inet_plumbed
[ -n "$inet6_plumbed" ] && if_configure inet6 "" $inet6_plumbed

#
# For the IPv4 and IPv6 interfaces that failed to plumb, find (or create)
# IPMP meta-interfaces to host their data addresses.
#
[ -n "$inet_failed" ] && move_addresses inet
[ -n "$inet6_failed" ] && move_addresses inet6

# Run DHCP if requested. Skip boot-configured interface.
interface_names="`echo /etc/dhcp.*[0-9] 2>/dev/null`"
if [ "$interface_names" != '/etc/dhcp.*[0-9]' ]; then
	#
	# First find the primary interface. Default to the first
	# interface if not specified. First primary interface found
	# "wins". Use care not to "reconfigure" a net-booted interface
	# configured using DHCP. Run through the list of interfaces
	# again, this time trying DHCP.
	#
	i4d_fail=
	firstif=
	primary=
	ORIGIFS="$IFS"
	IFS="${IFS}."
	set -- $interface_names

	while [ $# -ge 2 ]; do
		shift
		[ -z "$firstif" ] && firstif=$1

		for i in `shcat /etc/dhcp\.$1`; do
			if [ "$i" = primary ]; then
				primary=$1
				break
			fi
		done

		[ -n "$primary" ] && break
		shift
	done

	[ -z "$primary" ] && primary="$firstif"
	cmdline=`shcat /etc/dhcp\.${primary}`

	if [ "$_INIT_NET_IF" != "$primary" ]; then
		echo "starting DHCP on primary interface $primary"
		/sbin/ifconfig $primary auto-dhcp primary $cmdline
		# Exit code 4 means ifconfig timed out waiting for dhcpagent
		[ $? != 0 ] && [ $? != 4 ] && i4d_fail="$i4d_fail $primary"
	fi

	set -- $interface_names

	while [ $# -ge 2 ]; do
		shift
		cmdline=`shcat /etc/dhcp\.$1`
		if [ "$1" != "$primary" -a \
			"$1" != "$_INIT_NET_IF"  ]; then
			echo "starting DHCP on interface $1"
			/sbin/ifconfig $1 dhcp start wait 0 $cmdline
			# Exit code can't be timeout when wait is 0
			[ $? != 0 ] && i4d_fail="$i4d_fail $1"
		fi
		shift
	done
	IFS="$ORIGIFS"
	unset ORIGIFS
	[ -n "$i4d_fail" ] && warn_failed_ifs "configure IPv4 DHCP" "$i4d_fail"
fi

# There is a chicken-and-egg problem with bringing up overlay VNICs at boot
# time. When the first VNIC is added to an overlay, it creates a kernel socket
# to listen for incoming encapsulated frames. Therefore, VNICs cannot be added
# until after IP interfaces have been brought up. Overlay VNICs may themselves
# have IP interfaces over them and so it is necessary to attempt to bring up
# any remaining IP interfaces once the overlay VNICs are in place.
if smf_is_globalzone && dladm show-link -p -o class | egrep -s 'overlay'; then
	echo "Bringing up any remaining VNICs on overlays"
	/sbin/dladm up-vnic
	echo "Bringing up any remaining IP interfaces on overlay VNICs"
	bringup_ipif
fi

# In order to avoid bringing up the interfaces that have
# intentionally been left down, perform RARP only if the system
# has no configured hostname in /etc/nodename
hostname="`shcat /etc/nodename 2>/dev/null`"
if [ "$_INIT_NET_STRATEGY" = "rarp" -o -z "$hostname" ]; then
	/sbin/ifconfig -adD4 auto-revarp netmask + broadcast + up
fi

#
# If the /etc/defaultrouter file exists, process it now so that the next
# stage of booting will have access to NFS.
#
if [ -f /etc/defaultrouter ]; then
	while read router rubbish; do
		case "$router" in
			'#'* | '') ;;	#  Ignore comments, empty lines
			*)	/sbin/route -n add default -gateway $router ;;
		esac
	done </etc/defaultrouter
fi

#
# If we get here and were not asked to plumb any IPv4 interfaces, look
# for boot properties that direct us.
#
# - The "network-interface" property is required and indicates the
#   interface name.
# - The "xpv-hcp" property, if present, is used by the hypervisor
#   tools to indicate how the specified interface should be configured.
#   Permitted values are "dhcp" and "off", where "off" indicates static
#   IP configuration.
#
# In the case where "xpv-hcp" is set to "dhcp", no further properties
# are required or examined.
#
# In the case where "xpv-hcp" is not present or set to "off", the
# "host-ip" and "subnet-mask" properties are used to configure
# the specified interface.  The "router-ip" property, if present,
# is used to add a default route.
#
nic="`/sbin/devprop network-interface`"
if smf_is_globalzone && [ -z "$inet_list" ] && [ -n "$nic" ]; then
	hcp="`/sbin/devprop xpv-hcp`"
	case "$hcp" in
	"dhcp")
		/sbin/ifconfig $nic plumb 2>/dev/null
		[ -n "`/sbin/ifconfig $nic 2>/dev/null`" ] && (
			# The interface is successfully plumbed, so
			# modify "inet_list" to force the exit code
			# checks to work.
			inet_list=$nic;
			# Given that this is the only IPv4 interface,
			# we assert that it is primary.
			echo "starting DHCP on primary interface $primary";
			/sbin/ifconfig $nic auto-dhcp primary;
			# Exit code 4 means ifconfig timed out waiting
			# for dhcpagent
			[ $? != 0 ] && [ $? != 4 ] && \
			    i4d_fail="$i4d_fail $nic";
		)
		;;

	"off"|"")
		/sbin/devprop host-ip subnet-mask router-ip | (
			read ip;
			read mask;
			read router;
			[ -n "$ip" ] && [ -n "$mask" ] && \
				/sbin/ifconfig $nic plumb 2>/dev/null
			[ -n "`/sbin/ifconfig $nic 2>/dev/null`" ] && (
				# The interface is successfully
				# plumbed, so modify "inet_list" to
				# force the exit code checks to work.
				inet_list=$nic;
				/sbin/ifconfig $nic  inet $ip \
				    netmask $mask broadcast + up 2>/dev/null;
				[ -n "$router" ] && route add \
				    default $router 2>/dev/null;
			)
		)
		;;
	esac
fi

#
# We tell smf this service is online if any of the following is true:
# - no interfaces were configured for plumbing and no DHCP failures
# - any non-loopback IPv4 interfaces are up and have a non-zero address
# - there are any DHCP interfaces started
# - any non-loopback IPv6 interfaces are up
#
# If we weren't asked to configure any interfaces, exit
if [ -z "$inet_list" ] && [ -z "$inet6_list" ]; then
	# Config error if DHCP was attempted without plumbed interfaces
	[ -n "$i4d_fail" ] && exit $SMF_EXIT_ERR_CONFIG
	exit $SMF_EXIT_OK
fi

# Any non-loopback IPv4 interfaces with usable addresses up?
if [ -n "`/sbin/ifconfig -a4u`" ]; then
	/sbin/ifconfig -a4u | while read intf addr rest; do
		[ $intf = inet ] && [ $addr != 127.0.0.1 ] &&
		[ $addr != 0.0.0.0 ] && exit $SMF_EXIT_OK
	done && exit $SMF_EXIT_OK
fi

# Any DHCP interfaces started?
[ -n "`/sbin/ifconfig -a4 dhcp status 2>/dev/null`" ] && exit $SMF_EXIT_OK

# Any non-loopback IPv6 interfaces up?
if [ -n "`/sbin/ifconfig -au6`" ]; then
	/sbin/ifconfig -au6 | while read intf addr rest; do
		[ $intf = inet6 ] && [ $addr != ::1/128 ] && exit $SMF_EXIT_OK
	done && exit $SMF_EXIT_OK
fi

# This service was supposed to configure something yet didn't.  Exit
# with config error.
exit $SMF_EXIT_ERR_CONFIG