X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=grml-terminalserver;h=93fe965a87961a2f131d3d6985832b36829aa56a;hb=cc45e90db907e46cd16459c5def26ba8c577dc9b;hp=61c446173736573a1d0ae12e82006c63d77cad9f;hpb=a1989990540702f98cc5ab7f1fc693fea2d74a0f;p=grml-terminalserver.git diff --git a/grml-terminalserver b/grml-terminalserver index 61c4461..93fe965 100755 --- a/grml-terminalserver +++ b/grml-terminalserver @@ -1,4 +1,4 @@ -#!/bin/sh +#!/bin/bash # Filename: terminalserver # Purpose: Program to do something # Authors: grml-team (grml.org), (c) Michael Gebetsroither @@ -20,6 +20,7 @@ ### __VARIABLES ### +FORCE_='false' verbose_=0 # this file holds all variable definitions @@ -51,12 +52,14 @@ COMMANDS: SERVICES: tftp Tftp daemon dhcp Dhcp daemon + ipt Iptables setup (snat for clients) nfs All necessary nfs daemons <> ALL services - + OPTIONS: -v verbose (show what is going on, v++) -h this help text + -f Force EOT } @@ -75,7 +78,12 @@ function createDhcpConf execute "mv -fb \"$DHCPD_CONFIG_FILE_\" \"$DHCPD_CONFIG_FILE_.old\"" eprint &>/dev/null execute "source $TEMPLATE_CONFIG_DIR_/dhcpd_config" die else - warn "Not updating user edited configfile $DHCPD_CONFIG_FILE_" + if [[ $FORCE_ == "true" ]]; then + execute "mv -fb \"$DHCPD_CONFIG_FILE_\" \"$DHCPD_CONFIG_FILE_.old\"" eprint &>/dev/null + execute "source $TEMPLATE_CONFIG_DIR_/dhcpd_config" die + else + warn "Not updating user edited configfile $DHCPD_CONFIG_FILE_, user -f to override" + fi fi else execute "source $TEMPLATE_CONFIG_DIR_/dhcpd_config" die @@ -88,7 +96,11 @@ function removeDhcpConf if grep $CONFIG_PATTERN_ $DHCPD_CONFIG_FILE_ &>/dev/null; then rm -f "$DHCPD_CONFIG_FILE_" else - warn "Not deleting user edited configfile $DHCPD_CONFIG_FILE_" + if [[ $FORCE_ == "true" ]]; then + rm -f "$DHCPD_CONFIG_FILE_" + else + warn "Not deleting user edited configfile $DHCPD_CONFIG_FILE_, user -f to override" + fi fi fi } @@ -101,14 +113,16 @@ function stopDhcp rm -f /var/lib/dhcp3/dhcpd.leases* 2>/dev/null #FIXME touch /var/lib/dhcp3/dhcpd.leases } + function startDhcp { local conf_file_="$DHCPD_CONFIG_FILE_" - + test -f $DHCPD_BIN_ || die "could not find dhcpd \"$DHCPD_BIN_\"" start-stop-daemon --start --quiet --pidfile "$DHCPD_PID_" \ --exec "$DHCPD_BIN_" -- -cf "$conf_file_" -q "$INTERFACE_" || warn "problems starting dhcpd" } + function runDhcp { isExistent "$DHCPD_CONFIG_FILE_" || \ @@ -120,6 +134,62 @@ function runDhcp } # }}} +# IPTABLES {{{ +function runIptables +{ + if [[ $IPTABLES_SNAT_ != "true" ]]; then + return + fi + startIptables +} + +function startIptables +{ + if [ -x /sbin/iptables ] ; then + if [[ $NAT_INTERFACE_ != "" ]]; then + local nat_source_ip_=`netGetIp "$NAT_INTERFACE_" warn` + + if iptables -t nat -vnL POSTROUTING | grep -q "SNAT.*${NAT_INTERFACE_}.*to:${nat_source_ip_}" ; then + echo "Rule for SNAT already present, nothing to be done." + else + echo "Setting up SNAT for terminalserver clients on ${NAT_INTERFACE_}:" + echo "* iptables -t nat -F POSTROUTING" + echo -n "* iptables -t nat -A POSTROUTING -o $NAT_INTERFACE_ -j SNAT --to-source $nat_source_ip_ ... " + { iptables -t nat -F POSTROUTING && \ + iptables -t nat -A POSTROUTING -o "$NAT_INTERFACE_" -j SNAT --to-source "$nat_source_ip_" ; } && \ + echo done || echo failed + fi + if [ `cat /proc/sys/net/ipv4/ip_forward` -eq 1 ]; then + echo "IP-Forwarding already enabled, nothing to be done." + else + echo -n "Enabling IP-Forwarding: " + echo 1 > /proc/sys/net/ipv4/ip_forward && echo done || echo failed + fi + fi + else + warn "iptables executable not avilable" + fi +} + +function stopIptables +{ + if [[ $IPTABLES_SNAT_ != "true" ]]; then + return + fi + if [ -x /sbin/iptables ] ; then + if [[ $NAT_INTERFACE_ != "" ]]; then + local nat_source_ip_=`netGetIp "$NAT_INTERFACE_" warn` + + if iptables -t nat -vnL POSTROUTING | grep -q "SNAT.*${NAT_INTERFACE_}.*to:${nat_source_ip_}" ; then + iptables -t nat -F POSTROUTING &>/dev/null && \ + iptables -t nat -D POSTROUTING -o "$NAT_INTERFACE_" -j SNAT --to-source "$nat_source_ip_" + fi + echo 0 > /proc/sys/net/ipv4/ip_forward + fi + fi +} +# }}} + # TFTP SERVICE {{{ function removeTftpConf { @@ -128,8 +198,8 @@ function removeTftpConf function createTftpConf { removeTftpConf - - execute "mkdir $TFTPD_DATA_DIR_/pxelinux.cfg" die + + execute "mkdir -p $TFTPD_DATA_DIR_/pxelinux.cfg" die execute "install -m 644 /usr/lib/syslinux/pxelinux.0 $TFTPD_DATA_DIR_" die execute "install -m 644 $PATH_/minirt26.gz $TFTPD_DATA_DIR_" die execute "install -m 644 $KERNEL_IMAGE_ $TFTPD_DATA_DIR_/linux26" die @@ -142,12 +212,12 @@ function createTftpConf function stopTftp { - start-stop-daemon --stop --quiet --name "${TFTPD_BIN_##*/}" + start-stop-daemon --stop --quiet -p "$TFTPD_PID_" } function startTftp { test -f $TFTPD_BIN_ || die "could not find \"$TFTPD_BIN_\"" - start-stop-daemon --start --quiet --exec "$TFTPD_BIN_" -- -l -a "$IP_" -s "$TFTPD_DATA_DIR_" || \ + start-stop-daemon --start --quiet --exec "$TFTPD_BIN_" -- --daemon --no-multicast --pidfile "$TFTPD_PID_" --bind-address "$IP_" "$TFTPD_DATA_DIR_" || \ warn "problems starting tftpd server" } function runTftp @@ -176,6 +246,7 @@ function startNfs /etc/init.d/nfs-common start # FIXME /etc/init.d/nfs-kernel-server start $USR_SHARE_/nfs-kernel-server start + echo createNfsConfig } @@ -192,11 +263,6 @@ function stopNfs } # }}} -function allreadyConfigured -{ - isExistent "$CONF_FILE_" dprint || return 1 - return 0 -} function createConfig { @@ -211,22 +277,24 @@ function createConfig function actionStart { createConfig - - echo -n "Starting tftpd..." - runTftp - echo "done" - echo -n "Starting dhcpd..." - runDhcp - echo "done" - echo -n "Starting nfs..." - startNfs - echo "done" + + echo -n "Starting tftpd: " + runTftp && echo done || echo failed + + echo -n "Starting dhcpd: " + runDhcp && echo done || echo failed + + runIptables + + echo "Finally starting nfs services..." + startNfs && echo "Successfully finished startup of grml-terminalserver." || echo 'Startup of grml-terminalserver failed!' } function actionStop { stopTftp stopDhcp + stopIptables stopNfs notice "Terminal-server stopped" } @@ -261,6 +329,7 @@ function serviceStart "") actionStart ;; tftp) runTftp ;; dhcp) runDhcp ;; + ipt) startIptables ;; nfs) startNfs ;; *) warn "Service $service_ not available" ;; esac @@ -274,6 +343,7 @@ function serviceStop "") actionStop ;; tftp) stopTftp ;; dhcp) stopDhcp ;; + ipt) stopIptables ;; nfs) stopNfs ;; *) warn "Service $service_ not available" ;; esac @@ -284,8 +354,9 @@ function serviceStop ### __MAIN ### -while getopts "i:hv" opt; do +while getopts "fi:hv" opt; do case "$opt" in + f) FORCE_='true' ;; h) printUsage; exit ;; v) let verbose_=$verbose_+1 ;; ?) printUsage; exit 64 ;; @@ -319,7 +390,7 @@ PXE_BOOT_MSG_=\"$PXE_BOOT_MSG_\" PXE_BOOT_LOGO_=\"$PXE_BOOT_LOGO_\"" die "False configuration, please update $CONFIG_" fi - + case "$1" in clean) actionClean; exit 0 ;; esac @@ -333,7 +404,7 @@ while true; do "grml-terminalserver-config returned an error, do you want to quit now?" 5 75 && exit 1 else break - fi + fi done source $CONF_FILE_