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#!/bin/bash
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# Copyright (c) 2004-2005 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# Contributed by Roy Marples (uberlord@gentoo.org)
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# Fix any potential localisation problems
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# Note that LC_ALL trumps LC_anything_else according to locale(7)
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dhcpcd() {
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LC_ALL=C /sbin/dhcpcd "$@"
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}
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# char* dhcpcd_provides(void)
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#
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# Returns a string to change module definition for starting up
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dhcpcd_provides() {
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echo "dhcp"
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}
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# void dhcpcd_depend(void)
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#
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# Sets up the dependancies for the module
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dhcpcd_depend() {
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after interface
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}
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# bool dhcpcd_check_installed(void)
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#
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# Returns 1 if dhcpcd is installed, otherwise 0
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dhcpcd_check_installed() {
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if [[ -x /sbin/dhcpcd ]]; then
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if dhcpcd -h 2>&1 | grep -q "etcDir" ; then
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return 0
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else
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${1:-false} && eerror "We require dhcpcd-1.3.22_p4-r10"
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return 1
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fi
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fi
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${1:-false} && eerror "For DHCP (dhcpcd) support, emerge net-misc/dhcpcd"
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return 1
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}
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# bool dhcpcd_check_depends(void)
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#
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# Checks to see if we have the needed functions
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dhcpcd_check_depends() {
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local f
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for f in interface_exists interface_get_address; do
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[[ $( type -t ${f} ) == "function" ]] && continue
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eerror "dhcpcd: missing required function ${f}\n"
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return 1
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done
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return 0
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}
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# char* dhcpcd_get_vars(char *interface)
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#
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# Returns a string spaced with possible user set
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# configuration variables
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dhcpcd_get_vars() {
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echo "dhcpcd_$1 dhcp_$1"
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}
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# bool dhcpcd_stop(char *iface)
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#
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# Stop DHCP on an interface by calling dhcpcd -z $iface
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#
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# Returns 0 (true) when a DHCP address dropped
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# otherwise return 1
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dhcpcd_stop() {
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local iface=$1 count signal pidfile="/var/run/dhcpcd-$1.pid" d
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dhcpcd_check_installed || return 0
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[[ ! -f ${pidfile} ]] && return 0
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ebegin "Stopping dhcpcd on ${iface}"
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local pid=$( < ${pidfile} )
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local ifvar=$( bash_variable "${iface}" )
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eval d=\" \$\{dhcp_${ifvar}\} \"
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[[ ${d} == " " ]] && d=" ${dhcp} "
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if [[ ${d} == *" release "* ]]; then
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signal="HUP"
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else
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signal="TERM"
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fi
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kill -s "${signal}" "${pid}" &>/dev/null
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process_finished "${pid}" dhcpcd
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eend $? "timed out"
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return $?
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}
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# bool dhcpcd_start(char *iface)
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#
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# Start DHCP on an interface by calling dhcpcd $iface $options
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#
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# Returns 0 (true) when a DHCP address is obtained, otherwise 1
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dhcpcd_start() {
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local iface="$1" opts hostname pidfile="/var/run/dhcpcd-$1.pid"
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local ifvar=$( bash_variable "${iface}" ) metric d
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interface_exists "${iface}" true || return 1
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# Get our options
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eval opts=\" \$\{dhcpcd_${ifvar}\} \"
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# Map some generic options to dhcpcd
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eval d=\" \$\{dhcp_${ifvar}\} \"
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[[ ${d} == " " ]] && d=" ${dhcp} "
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[[ ${d} == *" nodns "* ]] && opts="${opts} -R"
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[[ ${d} == *" nontp "* ]] && opts="${opts} -N"
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[[ ${d} == *" nonis "* ]] && opts="${opts} -Y"
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[[ ${d} == *" nogateway "* ]] && opts="${opts} -G"
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# We transmit the hostname by default
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if [[ ${d} != *" nosendhost "* && ${opts} != *" -h "* ]]; then
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hostname=$( hostname )
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[[ -n ${hostname} && ${hostname} != "(none)" \
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&& ${hostname} != "localhost" ]] \
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&& opts="-h \"${hostname}\" ${opts}"
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fi
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# Stop dhcpcd from bringing the interface down when we exit
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opts="${opts} -o"
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# Add our route metric
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eval metric=\"\$\{metric_${ifvar}\}\"
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[[ -n ${metric} ]] && opts="${opts} -m ${metric}"
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# Instruct dhcpcd to use our wrapper
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opts="${opts} -c \"/lib/rcscripts/net.modules.d/helpers.d/dhcpcd-wrapper\""
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# Instruct dhcpcd to create it's files in our state dir
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opts="${opts} -e \"${statedir}/${iface}\""
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# Bring up DHCP for this interface (or alias)
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ebegin "Running dhcpcd"
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# Halt any existing dhcpcd process
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dhcpcd_stop "${iface}"
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[[ ! -d "${statedir}/${iface}" ]] && mkdir -p "${statedir}/${iface}"
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if [[ ${background} == "yes" ]]; then
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eval dhcpcd ${opts} ${iface} &
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eend 0
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go_background
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fi
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eval dhcpcd ${opts} ${iface}
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eend $? || return 1
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# DHCP succeeded, show address retrieved
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local addr=$( interface_get_address "${iface}" )
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einfo "${iface} received address ${addr}"
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return 0
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}
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