Chip 2007 January, February, March & April/Chip-Cover-CD-2007-02.iso/Pakiet bezpieczenstwa/mini Pentoo LiveCD 2006.1/mpentoo-2006.1.iso/livecd.squashfs/lib/rcscripts/net.modules.d/helpers.d/config-system

Text File | 2006-04-25 | 4.3 KB | 146 lines

# Copyright (c) 2004-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header$

# Contributed by Roy Marples ([e-mail])

[[ -z ${MODULES_DIR} ]] && MODULES_DIR=/lib/rcscripts/net.modules.d

if [[ $( type -t interface_variable ) != function ]]; then
    source ${MODULES_DIR}/helpers.d/functions
fi
if [[ $( type -t add_suffix ) != function ]]; then
    source /sbin/functions.sh
fi

[[ -e $(add_suffix /etc/conf.d/net) ]] && source $(add_suffix /etc/conf.d/net)

# bool need_hostname(void)
#
# Returns a 0 if no hostname is already set
# Otherwise 1
need_hostname() {
    local n=$( hostname )
    [[ ${n} == "(none)" || ${n} == "localhost" ]]
    return $?
}

# void restore_configs(void)
#
# Restores saved configuration when the DHCP client closes down
restore_configs() {
    [[ -f /etc/resolv.conf.sv ]] && mv /etc/resolv.conf.sv /etc/resolv.conf
    [[ -f /etc/ntp.conf.sv ]] && mv /etc/ntp.conf.sv /etc/ntp.conf
    [[ -f /etc/yp.conf.sv ]] && mv /etc/yp.conf.sv /etc/yp.conf
}

# void get_wireless_vars(void)
#
# Configures variables depending on SSID connected to
get_wireless_vars() {
    # Check that wireless has not already been configured
    [[ $(type -t wireless_check_extensions) == function ]] && return

    # Check we can load up the basics
    [[ ! -f ${MODULES_DIR}/essidnet || ! -f ${MODULES_DIR}/${module} ]] && return

    local m x
    # Lets do this the easy way - iwconfig is what we need as it supports
    # getting all the information we need regardless of how it was setup
    if [[ -f /sbin/iwconfig ]]; then
        m=iwconfig
    else
        # This is hairy. We need to know if a supplicant is installed
        # and running on the interface
        if [[ -f /sbin/wpa_supplicant && -S /var/run/wpa_supplicant/${interface} ]]; then
            m=wpa_supplicant
        fi
    fi
    [[ -z ${m} ]] && return

    source ${MODULES_DIR}/${m}
    for x in $( typeset -f | grep -o ^${m}_'[^ ]*' ); do
        eval "wireless${x#${m}}() { ${x} \"\$@\"; }"
    done

    # Setup the devnull var as we probably aren't being called via net.lo
    [[ -z ${devnull} ]] && local devnull=/dev/null

    # Check we are a wireless interface
    wireless_check_extensions ${interface} || return

    local -a MODULES=( "${module}" )
    source ${MODULES_DIR}/${module}
    source ${MODULES_DIR}/essidnet

    essidnet_pre_start ${interface} >/dev/null
}

# This routine configures the local host for non-ip and routing info
# from a DHCP client
config_system() {
    # Load our wireless mapped vars
    # For example dhcp_dns_ESSID becomes dhcp_dns_eth0
    get_wireless_vars

    local dhcp ifvar=$( interface_variable ${interface} )
    if need_hostname ; then
        [[ -n ${hostname} ]] && hostname ${hostname} >/dev/null
    fi

    eval dhcp=\" \$\{dhcp_${ifvar}\} \"

    if [[ ${dhcp} != *' nodns'* ]] && [[ -n ${domain} || -n ${dns} ]]; then
        echo "# generated automatically by net-scripts" > /etc/resolv.conf.tmp
        chmod 644 /etc/resolv.conf.tmp
        [[ -n ${domain} ]] && echo "domain ${domain}" >> /etc/resolv.conf.tmp

        for x in ${dns}; do
            echo "nameserver ${x}" >>/etc/resolv.conf.tmp
        done

        [[ -f /etc/resolv.conf && ! -f /etc/resol.conf.sv ]] && mv /etc/resolv.conf /etc/resolv.conf.sv
        mv /etc/resolv.conf.tmp /etc/resolv.conf
    fi

    if [[ ${dhcp} != *' nontp '* ]] && [[ -n ${ntpsrv} ]]; then
        echo "# generated automatically by net-scripts" > /etc/ntp.conf.tmp
        chmod 644 /etc/ntp.conf.tmp

        echo "restrict default noquery notrust nomodify" >> /etc/ntp.conf.tmp
        echo "restrict 127.0.0.1" >> /etc/ntp.conf.tmp
        echo "driftfile /var/lib/ntp/ntp.drift" >> /etc/ntp.conf.tmp

        for x in ${ntpsrv}; do
            echo "restrict ${x} nomodify notrap noquery" >> /etc/ntp.conf.tmp
            echo "server ${x}" >> /etc/ntp.conf.tmp
        done

        [[ -f /etc/ntp.conf && ! -f /etc/ntp.conf.sv ]] && mv /etc/ntp.conf /etc/ntp.conf.sv
        mv /etc/ntp.conf.tmp /etc/ntp.conf
    fi

    if [[ ${dhcp} != *' nonis '* ]] && [[ -n ${nisdomain} || -n ${nissrv} ]]; then
        echo "# generated automatically by net-scripts" > /etc/yp.conf.tmp
        chmod 644 /etc/yp.conf.tmp

        if [[ -n ${nisdomain} ]]; then
            hostname -y ${nisdomain}
            if [[ -n ${nissrv} ]]; then
                for x in ${nissrv}; do
                    echo "domain ${nisdomain} server ${x}" >> /etc/yp.conf.tmp
                done
            else
                echo "domain ${nisdomain} broadcast" >> /etc/yp.conf.tmp
            fi
        else
            for x in ${nissrv}; do
                echo "ypserver ${x}" >> /etc/yp.conf.tmp
            done
        fi

        [[ -f /etc/yp.conf && ! -f /etc/yp.conf.sv ]] && mv /etc/yp.conf /etc/yp.conf.sv
        mv /etc/yp.conf.tmp /etc/yp.conf
    fi
}