#!/sbin/runscript

source /sbin/livecd-functions.sh

depend()
{
	before xdm autorun tigervnc
	after pwgen sshd portmap hald
}

start()
{
	ebegin "Performing the SystemRescueCd specific initializations"

	CMDLINE="$(cat /proc/cmdline)"

	# ---- create file /var/log/lastlog so that ssh does not complain in the logs ----
	touch /var/log/lastlog

	# ---- create various directories ----
	mkdir -p /var/log/samba
	mkdir -p /var/cache/revdep-rebuild
	mkdir -p /var/run/dhcp
	chown dhcp:dhcp /var/run/dhcp

	# ---- disable screensaver in the console
	setterm -blank 0 -powersave off

	# ---- auto-detect software raid ----
	[ -n "$(which mdadm)" ] && mdadm --auto-detect 2>&1
	
	# ---- change the root password if requested in cmdline ----
	for curopt in ${CMDLINE}
	do
		if echo "${curopt}" | grep -q -E '^rootpass=[^ ]{1,32}$'
		then
			newpass="$(echo ${curopt} | sed -r -e 's!^rootpass=([^ ]{1,32})$!\1!g')"
			( echo root:${newpass} ) | chpasswd 1>/dev/null 2>&1
		fi
	done

	# ---- options to start/stop services ----
	for curopt in ${CMDLINE}
	do
		if echo "${curopt}" | grep -q -E '^initscript=[a-zA-Z0-9]{1,32}:[a-z]{1,32}$'
		then
			touch /var/log/initscript.log
			service="$(echo ${curopt} | sed -r -e 's!^initscript=([a-zA-Z0-9]{1,32}):([a-z]{1,32})$!\1!g')"
			action="$(echo ${curopt} | sed -r -e 's!^initscript=([a-zA-Z0-9]{1,32}):([a-z]{1,32})$!\2!g')"
			echo "initscript: found option ${curopt} (service=${service} and action=${action}" >| /var/log/initscript.log
			if [ -x "/etc/init.d/${service}" ]
			then
				cmd="/etc/init.d/${service} ${action}"
				${cmd} > /var/log/initscript-${service}.log 2>&1
				res=$?
				echo "initscript: ${cmd} --> ${res}" | tee -a /var/log/initscript.log
			else
				echo "initscript: /etc/init.d/${service} not found" | tee -a /var/log/initscript.log
			fi
		fi
	done
	
	# ---- options to configure and start the vncserver ----
	# eg: "rescuecd vncserver=2:mYpAsWd" will create two vnc displays (display=1 on port 5900 and display=2 on port 5901)
	# and the two displays will use the same password and the root user account (password=mYpAsWd)
	# this option should be used only once, but in case of multiple usages the last vncserver option overwrite the previous ones
	vnclog='/var/log/vncserver.log'
	for curopt in ${CMDLINE}
	do
		case "${curopt}" in
			vncserver\=*)
				echo '' >| ${vnclog}
				vncopt="$(echo ${curopt} | cut -d= -f2)"
				echo "vncserver: found option vncserver=${vncopt}" | tee -a ${vnclog}
				if echo "${vncopt}" | grep -q -E '^[1-9]:[^ ]{6,12}$'
				then
					[ -f /root/.vnc/passwd ] && rm -f /root/.vnc/passwd
					[ ! -d /root/.vnc ] && mkdir -p /root/.vnc
					sed -i -e 's!^DISPLAYS=.*!!g' /etc/conf.d/tigervnc
					displaycnt="$(echo ${curopt} | sed -r -e 's!^vncserver=([1-9]):([^ ]{6,12})$!\1!g')"
					password="$(echo ${curopt} | sed -r -e 's!^vncserver=([1-9]):([^ ]{6,12})$!\2!g')"
					echo "vncserver: ${displaycnt} displays will be created" | tee -a ${vnclog}
					echo "vncserver: creating password file in /root/.vnc/passwd:" >>${vnclog}
					echo -e "${password}\n${password}\n" | vncpasswd /root/.vnc/passwd >>${vnclog} 2>&1

					chmod 600 /root/.vnc/passwd
					echo "exec /usr/bin/startxfce4 >/dev/null 2>&1" >| /root/.vnc/xstartup
					chmod 700 /root/.vnc/xstartup
					displayopt=''
					for ((i=1; i <= displaycnt; i++))
					do
						echo "vncserver: preparing display number $i" | tee -a ${vnclog}
						displayopt="${displayopt} root:$i"
						displayopt="$(echo ${displayopt} | sed -e 's!^ !!g' | sed -e 's! $!!g')"
					done
					echo "DISPLAYS=\"${displayopt}\"" >> /etc/conf.d/tigervnc
				else
					echo "vncserver: invalid syntax (expected \"vncserver=x:mYpAsWd\")"
					echo "           where x is the number of displays (1 or 2 in general)"
					echo "           mYpAsWd is a password (between 6 and 12 characters)"
					sleep 2
				fi
				;;
		esac
	done
	
	# ---- clean /etc/mtab ----
	if grep -q -F 'tmpfs /newroot' /etc/mtab
	then
		rm -f /etc/mtab.bak
		cp /etc/mtab /etc/mtab.bak
		sed -i -e "/ \/newroot/d" /etc/mtab
	fi

	# ---- create a kernel options file ----
	if [ -f /proc/config.gz ]
	then
		cat /proc/config.gz | gzip -d > /root/kernel-$(uname -r).conf
	fi

	# ---- fix inittab for serial consoles
	livecd_fix_inittab
	/sbin/telinit q &>/dev/null

	# ---- mount tmpfs (important for backing store)
	mount -t tmpfs tmpfs /tmp
}