diff options
Diffstat (limited to 'source/installer/sources/initrd/usr/lib/setup/SeTpxe')
| -rwxr-xr-x | source/installer/sources/initrd/usr/lib/setup/SeTpxe | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/source/installer/sources/initrd/usr/lib/setup/SeTpxe b/source/installer/sources/initrd/usr/lib/setup/SeTpxe new file mode 100755 index 00000000..55c8a83b --- /dev/null +++ b/source/installer/sources/initrd/usr/lib/setup/SeTpxe @@ -0,0 +1,315 @@ +#!/bin/sh +# +# Copyright 2011 Eric Hameleers, Eindhoven, NL +# Copyright 2011 Patrick Volkerding, Sebeka, Minnesota USA +# All rights reserved. +# +# Redistribution and use of this script, with or without modification, is +# permitted provided that the following conditions are met: +# +# 1. Redistributions of this script must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. +# +# Bug reports, suggestions, etc for pxesetup: alien@slackware.com +# +TMP=/var/log/setup/tmp +if [ ! -d $TMP ]; then + mkdir -p $TMP +fi + +# Function to convert the netmask from CIDR format to dot notation. +cidr_cvt() { + inform=$1 + if [ $inform -ge 32 ]; then outform='255.255.255.255' + elif [ $inform -ge 31 ]; then outform='255.255.255.254' + elif [ $inform -ge 30 ]; then outform='255.255.255.252' + elif [ $inform -ge 29 ]; then outform='255.255.255.248' + elif [ $inform -ge 28 ]; then outform='255.255.255.240' + elif [ $inform -ge 27 ]; then outform='255.255.255.224' + elif [ $inform -ge 26 ]; then outform='255.255.255.192' + elif [ $inform -ge 25 ]; then outform='255.255.255.128' + elif [ $inform -ge 24 ]; then outform='255.255.255.0' + elif [ $inform -ge 23 ]; then outform='255.255.254.0' + elif [ $inform -ge 22 ]; then outform='255.255.252.0' + elif [ $inform -ge 21 ]; then outform='255.255.248.0' + elif [ $inform -ge 20 ]; then outform='255.255.240.0' + elif [ $inform -ge 19 ]; then outform='255.255.224.0' + elif [ $inform -ge 18 ]; then outform='255.255.192.0' + elif [ $inform -ge 17 ]; then outform='255.255.128.0' + elif [ $inform -ge 16 ]; then outform='255.255.0.0' + elif [ $inform -ge 15 ]; then outform='255.254.0.0' + elif [ $inform -ge 14 ]; then outform='255.252.0.0' + elif [ $inform -ge 13 ]; then outform='255.248.0.0' + elif [ $inform -ge 12 ]; then outform='255.240.0.0' + elif [ $inform -ge 11 ]; then outform='255.224.0.0' + elif [ $inform -ge 10 ]; then outform='255.192.0.0' + elif [ $inform -ge 9 ]; then outform='255.128.0.0' + elif [ $inform -ge 8 ]; then outform='255.0.0.0' + elif [ $inform -ge 7 ]; then outform='254.0.0.0' + elif [ $inform -ge 6 ]; then outform='252.0.0.0' + elif [ $inform -ge 5 ]; then outform='248.0.0.0' + elif [ $inform -ge 4 ]; then outform='240.0.0.0' + elif [ $inform -ge 3 ]; then outform='224.0.0.0' + elif [ $inform -ge 2 ]; then outform='192.0.0.0' + elif [ $inform -ge 1 ]; then outform='128.0.0.0' + elif [ $inform -ge 0 ]; then outform='0.0.0.0' + fi + echo $outform +} + +# IP Address to integer conversion and back: +ip_to_int() { + IFS=. + set -f + set -- $1 + echo $(($1 << 24 | $2 << 16 | $3 << 8 | $4)) +} +int_to_ip() { + echo $(($1>>24)).$(($1>>16&0xff)).$(($1>>8&0xff)).$(($1&0xff)) +} + +# PXE configuration file: +echo "" > $TMP/SeTpxe + +# Find out what interface we are using. +# Does the commandline have NIC information for us? +# Format is 'nic=driver:interface:<dhcp|static>:ip:mask:gw' +unset INTERFACE +for CMDELEM in $(cat /proc/cmdline) ; do + if $(echo $CMDELEM | grep -q "^nic=") ; then + INTERFACE=$(echo $DRIVER | cut -f2 -d:) + fi +done +if [ "x$INTERFACE" = "x" ]; then # the cmdline did not provide a nic + INTERFACE=$(ip -f inet -o addr show |tr -s ' ' |grep -v " lo " |cut -f2 -d' ' |head -1) +fi +if [ "x$INTERFACE" = "x" ]; then # no network was configured at all?!? + cat <<EOF > $TMP/tempmsg + +Apparently you forgot to configure a network interface? \n\ +A PXE Server needs a configured network interface to work.\n\ +Please try again! + +EOF + dialog --title "UNCONFIGURED NETWORK DEVICE" --msgbox "$(cat $TMP/tempmsg)" 9 68 + rm -f $TMP/tempmsg + exit 1 +fi + +# If there is a DHCP server on the network, we should not activate one now: +if [ -r $TMP/Pdhcp ]; then + DHCP="no" +elif [ -s /etc/dhcpc/dhcpcd-${INTERFACE}.info ]; then + DHCP="no" +else + # Assume nothing... we will ask the user for confirmation later! + DHCP="yes" +fi + +# Start the interactive part: +dialog --backtitle "Slackware PXE Server." \ + --title "WELCOME TO PXE CONFIGURATION" --msgbox "\ +We will be asking you a few questions now.\n\ +The answers will be used to start a PXE service on this computer \ +which does not interfere with other services in your network.\ +\n\ +The only assumption is, that there is NO PXE service running \ +on your local network at this moment. +\n\ +If in doubt, leave the defaults." 0 0 + +if [ "$DHCP" = "yes" ]; then + # Be extra safe. Do not start a DHCP server if the user denies it: + dialog --title "ENABLE DHCP SERVER" --yesno " \ +No active DHCP server was found on your local network. \ +The Slackware PXE server needs a working DHCP server.\n\ +Do you want this computer to start its own DHCP server \ +(you can control what IP addresses are used by the DHCP server)?\n\ +Say 'YES' if you are certain your network has no DHCP server." 9 68 + if [ $? = 0 ]; then + DHCP="yes" + else + DHCP="no" + fi +fi + +# Assemble the network parameters: +LOCAL_IPADDR=$(ip -f inet -o addr show |tr -s ' ' |grep -v " lo " |head -1 |cut -f4 -d' ' |cut -f1 -d/) +LOCAL_NETMASK=$(ip -f inet -o addr show |tr -s ' ' |grep -v " lo " |head -1 |cut -f4 -d' ' |cut -f2 -d/) +LOCAL_GATEWAY=$(ip -f inet -o route show default |tr -s ' ' |cut -f3 -d' ') +LOCAL_NETMASK=$(cidr_cvt $LOCAL_NETMASK) +LOCAL_BROADCAST=$(ipmask $LOCAL_NETMASK $LOCAL_IPADDR |cut -f 1 -d ' ') +LOCAL_NETWORK=$(ipmask $LOCAL_NETMASK $LOCAL_IPADDR |cut -f 2 -d ' ') + +if [ "$DHCP" = "yes" ]; then + # Find out a suitable IP address range for the DHCP server. Involves magic: + I_LOCAL_IPADDR=$(ip_to_int "$LOCAL_IPADDR") + I_LOCAL_NETMASK=$(ip_to_int "$LOCAL_NETMASK") + I_MINLEASE_IP=$(( ($I_LOCAL_IPADDR & $I_LOCAL_NETMASK) + 1 )) + I_MAXLEASE_IP=$(( ($I_LOCAL_IPADDR | ${I_LOCAL_NETMASK}^0xffffffff) - 1 )) + if [ $(($I_MAXLEASE_IP - $I_LOCAL_IPADDR)) -ge 10 ]; then + # Use ten IP addresses in the top of the address range: + I_MINLEASE_IP=$(($I_MAXLEASE_IP - 9)) + elif [ $(($I_LOCAL_IPADDR - $I_MINLEASE_IP)) -ge 10 ]; then + # Use ten IP addresses in the bottom of the address range: + I_MAXLEASE_IP=$(($I_MINLEASE_IP + 9)) + else + # Small range, use what we can get: + I_MINLEASE_IP=$(($I_LOCAL_IPADDR + 1)) + fi + + MINLEASE_IP=$(int_to_ip "$I_MINLEASE_IP") + MAXLEASE_IP=$(int_to_ip "$I_MAXLEASE_IP") + + while [ 0 ]; do + ( dialog --stdout --backtitle "Slackware PXE Server." \ + --title "DHCP SERVER CONFIGURATION" \ + --cancel-label Restart \ + --form "\ +The PXE Service is going to run on $INTERFACE with these values \ +(the defaults should be OK). \n\ +You can change the range of IP addresses used by the DHCP server, if \ +IP addresses in the proposed range are used by computers in your LAN. \ +For instance, your default gateway if you have one. \n\ +\n\ +Also note that we will not validate any changes you make:" \ + 18 68 0 \ + "IP Address:" 1 1 "$LOCAL_IPADDR" 1 30 0 0 \ + "Netmask:" 2 1 "$LOCAL_NETMASK" 2 30 0 0 \ + "Gateway:" 3 1 "$LOCAL_GATEWAY" 3 30 0 0 \ + "Lowest DHCP Client Address:" 4 1 "$MINLEASE_IP" 4 30 15 0 \ + "Highest DHCP Client Address:" 5 1 "$MAXLEASE_IP" 5 30 15 0 \ + ) > $TMP/tempopts + + if [ $? = 0 ]; then + # Remember... busybox ash is no good with arrays :/ + local i=0 + rm $TMP/tempkeys + cat $TMP/tempopts | while read VALUE ; do + if [ $i = 0 ]; then echo "MINLEASE_IP=\"$VALUE\"" >> $TMP/tempkeys + elif [ $i = 1 ]; then echo "MAXLEASE_IP=\"$VALUE\"" >> $TMP/tempkeys + fi + i=$(expr $i + 1) + done + eval $(cat $TMP/tempkeys) + rm $TMP/tempopts + break + fi + done +fi # [ "$DHCP" = "yes" ] + +echo "DHCP=${DHCP}" >> $TMP/SeTpxe +echo "LOCAL_IPADDR=${LOCAL_IPADDR}" >> $TMP/SeTpxe +echo "LOCAL_NETMASK=${LOCAL_NETMASK}" >> $TMP/SeTpxe +echo "LOCAL_GATEWAY=${LOCAL_GATEWAY}" >> $TMP/SeTpxe +echo "LOCAL_BROADCAST=${LOCAL_BROADCAST}" >> $TMP/SeTpxe +echo "LOCAL_NETWORK=${LOCAL_NETWORK}" >> $TMP/SeTpxe +echo "MINLEASE_IP=${MINLEASE_IP}" >> $TMP/SeTpxe +echo "MAXLEASE_IP=${MAXLEASE_IP}" >> $TMP/SeTpxe + +# Write out a suitable dnsmasq configuration: +cat <<EOF > /etc/dnsmasq.conf +# We do not need dnsmasq to function as a DNS server: +port=0 + +# Write the pid file: +pid-file=/var/run/dnsmasq.pid + +# Start a TFTP server: +enable-tftp + +# Set the root directory for files available via FTP: +tftp-root=/var/lib/tftpboot + +# The boot filename: +dhcp-boot=/pxelinux.0 + +# Disable re-use of the DHCP servername and filename fields as extra +# option space. That's to avoid confusing some old or broken DHCP clients. +dhcp-no-override + +# Log connections so that we can display them on the console: +log-facility=/var/log/dnsmasq.log +log-dhcp + +# Custom path for the leases file: +dhcp-leasefile=$TMP/dnsmasq.leases + +# Craft a nice PXE menu: +pxe-prompt="Press F8 for boot menu", 3 + +# The known types are x86PC, PC98, IA64_EFI, Alpha, Arc_x86, +# Intel_Lean_Client, IA32_EFI, BC_EFI, Xscale_EFI and X86-64_EFI +pxe-service=X86PC, "Boot from network", /var/lib/tftpboot/pxelinux + +# A boot service type of 0 is special, and will abort the +# net boot procedure and continue booting from local media. +pxe-service=X86PC, "Boot from local hard disk", 0 + +EOF + +if [ -n "$LOCAL_GATEWAY" ]; then + cat <<EOF >> /etc/dnsmasq.conf +# Override the default route supplied by dnsmasq, which assumes the +# router is the same machine as the one running dnsmasq. +#dhcp-option=option:router,${LOCAL_GATEWAY} +dhcp-option=3,${LOCAL_GATEWAY} + +EOF +else + cat <<EOF >> /etc/dnsmasq.conf +# Override the default route supplied by dnsmasq and send no default +# route at all. +dhcp-option=3 + +EOF +fi + +if [ "$DHCP" = "yes" ]; then + cat <<EOF >> /etc/dnsmasq.conf +# dnsmasq functions as a normal DHCP server, providing IP leases. +dhcp-range=${MINLEASE_IP},${MAXLEASE_IP},${LOCAL_NETMASK},1h + +EOF +else + cat <<EOF >> /etc/dnsmasq.conf +# There is an existing DHCP server on this LAN, so dnsmasq functions +# as a proxy DHCP server providing boot information but no IP leases. +# Any ip in the subnet will do, so you may just put your server NIC ip here. +dhcp-range=${LOCAL_IPADDR},proxy + +EOF +fi + +# Create the pxelinux configuration file: +cat <<EOF > /var/lib/tftpboot/pxelinux.cfg/default +default huge.s +prompt 1 +timeout 1200 +display message.txt +F1 message.txt +F2 f2.txt +label huge.s + kernel kernels/huge.s/bzImage + append initrd=initrd.img load_ramdisk=1 prompt_ramdisk=0 rw printk.time=0 SLACK_KERNEL=huge.s cf=tftp,${LOCAL_IPADDR},/slackpxe.cfg +label speakup.s + kernel kernels/huge.s/bzImage + append initrd=initrd.img load_ramdisk=1 prompt_ramdisk=0 rw printk.time=0 SLACK_KERNEL=huge.s cf=tftp,${LOCAL_IPADDR},/slackpxe.cfg +label memtest + kernel kernels/memtest/memtest +EOF + +# Update the slackpxe.cfg file: +sed -i -e "s,^REMOTE_URL=.*,REMOTE_URL=http://$LOCAL_IPADDR," /var/lib/tftpboot/slackpxe.cfg + |