startup

#!/bin/sh

# SETTINGS

ADMIN_EMAIL=$(sed -n '/admin:/{s/^.*admin: \(.*\)$/\1/;p}' sourcemud.conf)
PAUSE=$(expr 60 '*' 5)
BIN=$(test -x './sourcemud' && echo './sourcemud' || test -x './src/sourcemud' && echo './src/sourcemud')
LOG='sourcemud.log'
MAIL=$(test -x /usr/sbin/sendmail && echo /usr/sbin/sendmail || which sendmail)

# CODE

# no executable?
if test "x$BIN" = "x" ; then
	echo "No executable found" >&2
	exit 2
fi

# allow core files
ulimit -c unlimited

# run loop
while true ; do
	# run MUD - exit on proper exit
	if "$BIN" ; then
		exit 0
	fi

	# find core file
	CORE=$(ls core core.* 2>/dev/null)
	if test -f "$CORE" ; then
		# mail message
		echo 'Source MUD Crash at' `date` > mail.txt
		echo >> mail.txt

		# log file
		echo '50 lines of log:' >> mail.txt
		test -f "$LOG" && tail -n 50 "$LOG" >> mail.txt
		echo >> mail.txt

		# backtrace
		echo 'Backtrace:' >> mail.txt
		echo 'backtrace' > gdb.cmds.txt
		gdb "$BIN" "$CORE" -batch -x gdb.cmds.txt >> mail.txt
		rm -f gdb.cmds.txt

		# do mail
		"$MAIL" -s 'Source MUD Crash' "$ADMIN_EMAIL" < mail.txt
	fi

	# pause before restart
	sleep "$PAUSE"
done