path: root/usr.sbin/bsdconfig/networking/share/device.subr

if [ ! "$_NETWORKING_DEVICE_SUBR" ]; then _NETWORKING_DEVICE_SUBR=1
#
# Copyright (c) 2006-2015 Devin Teske
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
############################################################ INCLUDES

BSDCFG_SHARE="/usr/share/bsdconfig"
. $BSDCFG_SHARE/common.subr || exit 1
f_dprintf "%s: loading includes..." networking/device.subr
f_include $BSDCFG_SHARE/device.subr
f_include $BSDCFG_SHARE/dialog.subr
f_include $BSDCFG_SHARE/media/tcpip.subr
f_include $BSDCFG_SHARE/networking/common.subr
f_include $BSDCFG_SHARE/networking/ipaddr.subr
f_include $BSDCFG_SHARE/networking/media.subr
f_include $BSDCFG_SHARE/networking/netmask.subr
f_include $BSDCFG_SHARE/networking/resolv.subr
f_include $BSDCFG_SHARE/networking/routing.subr
f_include $BSDCFG_SHARE/strings.subr
f_include $BSDCFG_SHARE/sysrc.subr

BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="120.networking"
f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr

############################################################ GLOBALS

#
# Settings used while interacting with various dialog(1) menus
#
: ${DIALOG_MENU_NETDEV_KICK_INTERFACES=1}
: ${DIALOG_MENU_NETDEV_SLEEP_AFTER_KICK=3}

############################################################ FUNCTIONS

# f_dialog_menu_netdev [$default]
#
# Display a list of network devices with descriptions. Optionally, if present
# and non-NULL, initially highlight $default interface.
#
f_dialog_menu_netdev()
{
	local menu_list # Calculated below
	local defaultitem="${1%\*}" # Trim trailing asterisk if present

	#
	# Display a message to let the user know we're working...
	# (message will remain until we throw up the next dialog)
	#
	f_dialog_info "$msg_probing_network_interfaces"

	#
	# Get list of usable network interfaces
	#
	local dev devs if iflist= # Calculated below
	f_device_rescan_network
	f_device_find "" $DEVICE_TYPE_NETWORK devs
	for dev in $devs; do
		f_struct "$dev" get name if || continue
		# Skip unsavory interfaces
		case "$if" in
		lo[0-9]*|ppp[0-9]*|sl[0-9]*|faith[0-9]*) continue ;;
		esac
		iflist="$iflist $if"
	done
	iflist="${iflist# }"

	#
	# Optionally kick interfaces in the head to get them to accurately
	# track the carrier status in realtime (required on FreeBSD).
	#
	if [ "$DIALOG_MENU_NETDEV_KICK_INTERFACES" ]; then
		DIALOG_MENU_NETDEV_KICK_INTERFACES=

		for if in $iflist; do
			f_quietly ifconfig $if up
		done

		if [ "$DIALOG_MENU_NETDEV_SLEEP_AFTER_KICK" ]; then
			# interfaces need time to update carrier status
			sleep $DIALOG_MENU_NETDEV_SLEEP_AFTER_KICK
		fi
	fi

	#
	# Mark any "active" interfaces with an asterisk (*)
	# to the right of the device name.
	#
	menu_list=$(
		for if in $iflist; do
			f_device_desc $if $DEVICE_TYPE_NETWORK desc
			f_shell_escape "$desc" desc
			if f_device_is_active $if; then
				printf "'%s\*' '%s'\n" $if "$desc"
			else
				printf "'%s' '%s'\n" $if "$desc"
			fi
		done
	)
	if [ ! "$menu_list" ]; then
		f_show_msg "$msg_no_network_interfaces"
		return $DIALOG_CANCEL
	fi

	# Maybe the default item was marked as active
	f_device_is_active "$defaultitem" && defaultitem="$defaultitem*"

	#
	# Ask user to select an interface
	#
	local prompt="$msg_select_network_interface"
	local hline="$hline_arrows_tab_enter"
	local height width rows
	eval f_dialog_menu_size height width rows \
	                        \"\$DIALOG_TITLE\"     \
	                        \"\$DIALOG_BACKTITLE\" \
	                        \"\$prompt\"           \
	                        \"\$hline\"            \
	                        $menu_list
	local menu_choice
	menu_choice=$( eval $DIALOG \
		--title \"\$DIALOG_TITLE\"         \
		--backtitle \"\$DIALOG_BACKTITLE\" \
		--hline \"\$hline\"                \
		--ok-label \"\$msg_ok\"            \
		--cancel-label \"\$msg_cancel\"    \
		--default-item \"\$defaultitem\"   \
		--menu \"\$prompt\"                \
		$height $width $rows               \
		$menu_list                         \
		2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
	)
	local retval=$?
	f_dialog_menutag_store -s "$menu_choice"
	return $retval
}

# f_dialog_menu_netdev_edit $interface $ipaddr $netmask $options $dhcp
#
# Allow a user to edit network interface settings. Current values are not
# probed but rather taken from the positional arguments.
#
f_dialog_menu_netdev_edit()
{
	local funcname=f_dialog_menu_netdev_edit
	local interface="$1" ipaddr="$2" netmask="$3" options="$4" dhcp="$5"
	local prompt menu_list height width rows

	#
	# Create a duplicate set of variables for change-tracking...
	#
	local ipaddr_orig="$2"  \
	      netmask_orig="$3" \
	      options_orig="$4" \
	      dhcp_orig="$5"

	local hline="$hline_arrows_tab_enter"
	f_sprintf prompt "$msg_network_configuration" "$interface"

	#
	# Loop forever until the user has finished configuring the different
	# components of the network interface.
	#
	# To apply the settings, we need to know each of the following:
	# 	- IP Address
	# 	- Network subnet mask
	# 	- Additional ifconfig(8) options
	#
	# It is only when we have all of the above values that we can make the
	# changes effective because all three options must be specified at-once
	# to ifconfig(8).
	#
	local defaultitem=
	while :; do
		local dhcp_status="$msg_disabled"
		[ "$dhcp" ] && dhcp_status="$msg_enabled"

		#
		# Display configuration-edit menu
		#
		menu_list="
			'X $msg_save_exit' '$msg_return_to_previous_menu'
			'2 $msg_dhcp'      '$dhcp_status'
			'3 $msg_ipaddr4'   '$ipaddr'
			'4 $msg_netmask'   '$netmask'
			'5 $msg_options'   '$options'
		" # END-QUOTE
		eval f_dialog_menu_size height width rows \
		                        \"\$DIALOG_TITLE\"     \
		                        \"\$DIALOG_BACKTITLE\" \
		                        \"\$prompt\"           \
		                        \"\$hline\"            \
		                        $menu_list
		local tag
		tag=$( eval $DIALOG \
			--title \"\$DIALOG_TITLE\"         \
			--backtitle \"\$DIALOG_BACKTITLE\" \
			--hline \"\$hline\"                \
			--ok-label \"\$msg_ok\"            \
			--cancel-label \"\$msg_cancel\"    \
			--help-button                      \
			--help-label \"\$msg_help\"        \
			${USE_XDIALOG:+--help \"\"}        \
			--default-item \"\$defaultitem\"   \
			--menu \"\$prompt\"                \
			$height $width $rows               \
			$menu_list                         \
			2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
		)
		local retval=$?
		f_dialog_data_sanitize tag

		if [ $retval -eq $DIALOG_HELP ]; then
			f_show_help "$TCP_HELPFILE"
			continue
		elif [ $retval -ne $DIALOG_OK ]; then
			return $retval
		else
			# Only update default-item on success
			defaultitem="$tag"
		fi

		#
		# Call the below ``modifier functions'' whose job it is to take
		# input from the user and assign the newly-acquired values back
		# to the ipaddr, netmask, and options variables for us to re-
		# read and display in the summary dialog.
		#
		case "$tag" in
		X\ *) break ;;
		2\ *) #
		      # Proceed cautiously (confirm with the user) if/when NFS-
		      # mounts are active. If the network on which these mounts
		      # are made is changed parts of the system may hang.
		      #
		      if f_nfs_mounted && ! f_jailed; then
			local setting
			f_sprintf setting "$msg_current_dhcp_status" \
		      	                  "$interface" "$dhcp_status"
			f_noyes "$msg_nfs_mounts_may_cause_hang" "$setting" ||
		      		continue
		      fi

		      #
		      # Toggle DHCP status
		      #
		      if [ "$dhcp_status" = "$msg_enabled" ]; then
		      	dhcp=
		      else
		      	trap - SIGINT
		      	( # Execute within sub-shell to allow/catch Ctrl-C
		      	  trap 'exit $FAILURE' SIGINT
			  f_sprintf msg "$msg_scanning_for_dhcp" "$interface"
		      	  if [ "$USE_XDIALOG" ]; then
		      	  	(
		      	  	  f_quietly ifconfig "$interface" delete
		      	  	  f_quietly dhclient "$interface"
		      	  	) |
		      	  	  f_xdialog_info "$msg"
		      	  else
		      	  	f_dialog_info "$msg"
		      	  	f_quietly ifconfig "$interface" delete
		      	  	f_quietly dhclient "$interface"
		      	  fi
		      	)
		      	retval=$?
		      	trap 'interrupt' SIGINT
		      	if [ $retval -eq $DIALOG_OK ]; then
		      		dhcp=1
		      		f_ifconfig_inet "$interface" ipaddr
				f_ifconfig_inet6 "$interface" ipaddr6
		      		f_ifconfig_netmask "$interface" netmask
		      		options=

		      		# Fixup search/domain in resolv.conf(5)
		      		hostname=$( f_sysrc_get \
				            	'hostname:-$(hostname)' )
		      		f_dialog_resolv_conf_update "$hostname"
		      	fi
		      fi
		      ;;
		3\ *) f_dialog_input_ipaddr "$interface" "$ipaddr"
		      [ $? -eq $DIALOG_OK ] && dhcp= ;;
		4\ *) f_dialog_input_netmask "$interface" "$netmask"
		      [ $? -eq $DIALOG_OK -a "$_netmask" ] && dhcp= ;;
		5\ *) f_dialog_menu_media_options "$interface" "$options"
		      [ $? -eq $DIALOG_OK ] && dhcp= ;;
		esac
	done

	#
	# Save only if the user changed at least one feature of the interface
	#
	if [ "$ipaddr"  != "$ipaddr_orig"  -o \
	     "$netmask" != "$netmask_orig" -o \
	     "$options" != "$options_orig" -o \
	     "$dhcp"    != "$dhcp_orig" ]
	then
		f_show_info "$msg_saving_network_interface" "$interface"

		local value=
		if [ "$dhcp" ]; then
			f_eval_catch $funcname f_sysrc_delete \
				'f_sysrc_delete defaultrouter'
			value=DHCP
		else
			value="inet $ipaddr netmask $netmask"
			value="$value${options:+ }$options"
		fi

		f_eval_catch $funcname f_sysrc_set \
			'f_sysrc_set "ifconfig_%s" "%s"' "$interface" "$value"
	fi

	#
	# Re/Apply the settings if desired
	#
	if [ ! "$dhcp" ]; then
		if f_yesno "$msg_bring_interface_up" "$interface"
		then
			f_show_info "$msg_bring_interface_up" "$interface"

			local dr="$( f_sysrc_get defaultrouter )"
			if [ "$dr" = "NO" -o ! "$dr" ]; then
				f_route_get_default dr
				[ "$dr" ] && f_eval_catch \
					$funcname f_sysrc_set \
					'f_sysrc_set defaultrouter "%s"' "$dr"
			fi
			#
			# Make a backup of resolv.conf(5) before using
			# ifconfig(8) and then restore it afterward. This
			# allows preservation of nameservers acquired via
			# DHCP on FreeBSD-8.x (normally lost as ifconfig(8)
			# usage causes dhclient(8) to exit which scrubs
			# resolv.conf(5) by-default upon termination).
			#
			f_quietly cp -fp "$RESOLV_CONF" "$RESOLV_CONF.$$"
			if f_eval_catch $funcname ifconfig \
				'ifconfig "%s" inet "%s" netmask "%s" %s' \
				"$interface" "$ipaddr" "$netmask" "$options"
			then
				[ "$dr" -a "$dr" != "NO" ] &&
					f_eval_catch $funcname route \
						'route add default "%s"' "$dr"
			fi
			if cmp -s "$RESOLV_CONF" "$RESOLV_CONF.$$"; then
				f_quietly rm -f "$RESOLV_CONF.$$"
			else
				f_quietly mv -f "$RESOLV_CONF.$$" "$RESOLV_CONF"
			fi
		fi
	fi

	return $DIALOG_OK
}

############################################################ MAIN

f_dprintf "%s: Successfully loaded." networking/device.subr

fi # ! $_NETWORKING_DEVICE_SUBR