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#! /bin/sh
### BEGIN INIT INFO
# Provides:          minecraft_server
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Minecraft Server control script.
# Description:       Minecraft Server control script.
#   Options
#     start <world>          - Start the Minecraft world server.  Starts all world servers by default.
#     stop <world>           - Stop the Minecraft world server.  Stops all world servers by default.
#     force-stop <world>     - Forcibly stop the Minecraft world server.  Forcibly stops all world servers by default.
#     restart <world>        - Restart the Minecraft world server.  Restarts all world servers by default.
#     force-restart <world>  - Forcibly restart the Minecraft world server.  Forcibly restarts all world servers by default.
#     status <world>         - Display the status of the Minecraft world server.  Displays the status of all world servers by default.
#     send <world> <command> - Send a command to a Minecraft world server.
#     backup <world>         - Backup the Minecraft world.  Backup all worlds by default.
#     c10t <world>           - Run the c10t mapping software on the Minecraft world.  Maps all worlds by default.
#     update <software>      - Update a software package.  Update the server software and all addons by default.
#                                Available software options
#                                  server - Minecraft server software.
#                                  c10t - Mapping software.
### END INIT INFO


USER_NAME=minecraft

LOCATION="/home/$USER_NAME"


## Minecraft software options.

# Software packages, used for updating.
PACKAGES="server c10t"

# Minecraft server.
SERVER_URL="http://www.minecraft.net/download/minecraft_server.jar"
SERVER_LOCATION="$LOCATION/minecraft_server"
SERVER_JAR="$SERVER_LOCATION/minecraft_server.jar"
SERVER_ARGS="nogui"
INITIAL_MEMORY="1024M"
MAXIMUM_MEMORY="1024M"

# c10t mapping software.
ARCH=$(uname -m)
C10T_URL="http://toolchain.eu/hudson/job/c10t%20HEAD%20Linux%20$ARCH/lastStableBuild/artifact/build/c10t-HEAD-linux-$ARCH.tar.gz"
C10T_LOCATION="$LOCATION/c10t"
C10T_BIN="$C10T_LOCATION/c10t"

# Location to place map images, and the URL displayed to users for map access.
MAPS_URL="http://minecraft.server.com/maps"
MAPS_LOCATION="$LOCATION/maps"


## World configuration.

WORLDS_LOCATION="$LOCATION/worlds"

# List of worlds and the ports they are running on.  This file will
# be generated if missing.
# Note: World name should not contain a space, at least for now.
# ie:
#   alpha	25565
#   beta	25566
WORLDS_CONF="$LOCATION/worlds.conf"

# Default world name and port if worlds.conf is missing.
DEFAULT_WORLD="world"
DEFAULT_PORT="25565"


## Backup configuration.

BACKUP_LOCATION="$LOCATION/backups"

# Length in days that backups survive.
BACKUP_FULL_DURATION=31


## Internal Methods.

getProcessIDs() {
	# Get the PIDs of the Screen and Java process for the world server.
	# ARGS: world
	local SCREEN_PID JAVA_PID
	SCREEN_PID=$(su -c "$SCREEN -ls" $USER_NAME | $PERL -ne 'if ($_ =~ /^\t(\d+)\.minecraft-'$1'/) { print $1; }')
	JAVA_PID=$(ps -a -u $USER_NAME -o pid,ppid,comm | $PERL -ne 'if ($_ =~ /^\s*(\d+)\s+'$SCREEN_PID'\s+java/) { print $1; }')
	echo "$SCREEN_PID $JAVA_PID"
}

serverRunning() {
	# Check to see if the world server is running.
	# ARGS: world
	local PIDS
	PIDS=$(getProcessIDs $1)
	# Try to determine if the world is running.
	if [ -n "$(echo $PIDS | cut -d ' ' -f1)" ] && [ -n "$(echo $PIDS | cut -d ' ' -f2)" ]; then
		echo 1
	else
		echo 0
	fi
}

sendCommand() {
	# Send a command to the world server.
	# ARGS: world command
	local COMMAND
	COMMAND=$(printf "$2\r")
	su -c "$SCREEN -S minecraft-$1 -p 0 -X stuff \"$COMMAND\"" $USER_NAME
	if [ ! $? = 0 ]; then
		printf "Error sending command to server.\n"
		exit 1
	fi

}

listContains() {
	# Check whether a list contains something that matches the pattern.
	# ARGS: pattern list
	local MATCH
	MATCH=$(echo \"$2\" | $PERL -ne 'if ($_ =~ /('$1')/) { print "$1"; }')
	if [ -n "$MATCH" ]; then
		echo 1
	else
		echo 0
	fi
}

start() {
	# Start the world server.
	# ARGS: world
	local SERVER_PORT
	# Make sure that the server directory exists.
	su -c "mkdir -p $WORLDS_LOCATION/$1" $USER_NAME
	cd $WORLDS_LOCATION/$1
	# Make sure that the server properties file exists.
	if [ ! -e server.properties ]; then
		SERVER_PORT=$(grep $1 $WORLDS_CONF | cut -f2)
		su -c "printf \"# Minecraft server properties\n\" > server.properties" $USER_NAME
		su -c "printf \"level-name=world\n\" >> server.properties" $USER_NAME
		su -c "printf \"server-port=$SERVER_PORT\n\" >> server.properties" $USER_NAME
	fi
	# Start the server.
	su -c "$SCREEN -dmS minecraft-$1 $JAVA -Xms$INITIAL_MEMORY -Xmx$MAXIMUM_MEMORY -jar $SERVER_JAR $SERVER_ARGS" $USER_NAME
	if [ ! $? = 0 ]; then
		printf "Error starting the server.\n"
		exit 1
	fi
}

forceStop() {
	# Forcibly stop the world server.
	# ARGS: world
	local PIDS
	PIDS=$(getProcessIDs $1)
	# Try to stop the server cleanly first.
	sendCommand $1 "stop"
	sleep 5
	# Kill the process ids of the world server.
	kill -9 $PIDS > /dev/null 2>&1
}

fullBackup() {
	# Backup the world server.
	# ARGS: world
	# Grab the date and time.
	local DATE_TIME
	DATE_TIME=$(date +%Y-%m-%d-%H:%M:%S)
	su -c "mkdir -p $BACKUP_LOCATION" $USER_NAME
	cd $WORLDS_LOCATION
	su -c "tar -czf $BACKUP_LOCATION/fullBackup-$1-$DATE_TIME.tar.gz $1" $USER_NAME
	# Cleanup old backups.
	su -c "find $BACKUP_LOCATION -name fullBackup-$1-* -type f -mtime +$BACKUP_FULL_DURATION -delete" $USER_NAME
}

update() {
	# Update software package.
	# ARGS: package
	case "$1" in
		server)
			su -c "mkdir -p $SERVER_LOCATION" $USER_NAME
			# Backup the old server jar.
			if [ -e $SERVER_JAR ]; then
				su -c "mv -f $SERVER_JAR $SERVER_JAR.old" $USER_NAME
			fi
			# Download the new server software.
			su -c "$WGET -qO $SERVER_JAR $SERVER_URL" $USER_NAME
			# Check for error and restore backup if found.
			if [ ! $? = 0 ]; then
				printf "Error updating server software.\n"
				if [ -e "$SERVER_JAR.old" ]; then
					su -c "mv -f $SERVER_JAR.old $SERVER_JAR" $USER_NAME
				fi
				exit 1
			fi
		;;
		c10t)
			su -c "mkdir -p $C10T_LOCATION" $USER_NAME
			# Download the new c10t mapping software.
			cd $C10T_LOCATION
			su -c "$WGET -qO c10t.tar.gz $C10T_URL" $USER_NAME
			if [ ! $? = 0 ]; then
				printf "Error updating c10t.\n"
				exit 1
			fi
			su -c "tar xzf c10t.tar.gz" $USER_NAME
			su -c "cp -R c10t-HEAD/* ." $USER_NAME
			su -c "rm -R c10t-HEAD" $USER_NAME
		;;
		*)
			printf "Unknown software package: $1\n"
			exit 1
		;;
	esac
}

c10t() {
	# Run c10t mapping software on the server.
	# ARGS: world
	su -c "mkdir -p $MAPS_LOCATION/$1" $USER_NAME
	# Make sure that the world files are actually there before mapping.
	if [ -e "$WORLDS_LOCATION/$1/server.properties" ]; then
		su -c "$C10T_BIN -s -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/surface.png" $USER_NAME
		su -c "$C10T_BIN -s -c -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves.png" $USER_NAME
		su -c "$C10T_BIN -s -c -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves_heightmap.png" $USER_NAME
		su -c "$C10T_BIN -s -a -i 56 -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/diamonds_heightmap.png" $USER_NAME
		su -c "$C10T_BIN -s -a -i 4 -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/cobble_heightmap.png" $USER_NAME
		su -c "$C10T_BIN -s -q -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/surface_oblique.png" $USER_NAME
		su -c "$C10T_BIN -s -q -c -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves_oblique.png" $USER_NAME
	fi
}

## Begin.

# Make sure that Java, Perl, GNU Screen, and GNU Wget are installed.
JAVA=$(which java)
PERL=$(which perl)
SCREEN=$(which screen)
WGET=$(which wget)
if [ ! -e $JAVA ]; then
	printf "Java not found!\n"
	printf "Try installing this with:\n"
	printf "sudo apt-get install openjdk-6-jre\n"
	exit 1
fi
if [ ! -e $PERL ]; then
	printf "Perl not found!\n"
	printf "Try installing this with:\n"
	printf "sudo apt-get install perl\n"
	exit 1
fi
if [ ! -e $SCREEN ]; then
	printf "GNU Screen not found!\n"
	printf "Try installing this with:\n"
	printf "sudo apt-get install screen\n"
	exit 1
fi
if [ ! -e $WGET ]; then
	printf "GNU Wget not found!\n"
	printf "Try installing this with:\n"
	printf "sudo apt-get install wget\n"
	exit 1
fi

# Make sure that the minecraft user exists, print a sane error if not.
if [ ! -n "$(grep $USER_NAME /etc/passwd)" ]; then
	printf "This script requires that a user account named $USER_NAME exist on this system.\n"
	printf "Try adding this user:\n"
	printf "sudo adduser $USER_NAME\n"
	exit 1
fi

# From here on out the script needs to be run as root, print a sane error if running as a user.
WHOAMI=$(whoami)
if [ ! "$WHOAMI" = "root" ]; then
	printf "This script needs to be run as root, you seem to be $WHOAMI.\n"
	printf "Try running this with sudo:\n"
	printf "sudo $0 start\n"
	exit 1
fi

# Make sure that the worlds.conf file exists.
if [ ! -e $WORLDS_CONF ]; then
	su -c "printf \"$DEFAULT_WORLD\t$DEFAULT_PORT\n\" > $WORLDS_CONF" $USER_NAME
fi

# Grab the list of worlds.
WORLDS=$(cut -f1 $WORLDS_CONF)

# Respond to the command line arguments.
case "$1" in
	start)
		printf "Starting Minecraft Server:"
		# Make sure that the server software exists.
		if [ ! -e $SERVER_JAR ]; then
			printf "Server software not found, downloading it...\n"
			update "server"
		fi
		# Check for the optional world command line argument.
		if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
			WORLDS="$2"
		elif [ -n "$2" ]; then
			printf "Minecraft world $2 not found!\n"
			printf "  Usage:  $0 $1 <world>\n"
			exit 1
		fi
		# Start each world requested, if not already running.
		for WORLD in $WORLDS; do
			if [ $(serverRunning $WORLD) = 0 ]; then
				printf " $WORLD"
				start $WORLD
			fi
		done
		printf "\n"
	;;
	stop|force-stop)
		printf "Stopping Minecraft Server:"
		# Check for the optional world command line argument.
		if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
			WORLDS="$2"
		elif [ -n "$2" ]; then
			printf "Minecraft world $2 not found!\n"
			printf "  Usage:  $0 $1 <world>\n"
			exit 1
		fi
		# Stop each world requested, if running.
		for WORLD in $WORLDS; do
			# Try to stop the world cleanly.
			if [ $(serverRunning $WORLD) = 1 ]; then
				printf " $WORLD"
				sendCommand $WORLD "say The server is about to go down."
				sendCommand $WORLD "save-all"
				sendCommand $WORLD "save-off"
				sendCommand $WORLD "say The server is going down in 5 seconds..."
				sleep 5
				if [ "$1" = "force-stop" ]; then
					forceStop $WORLD
				else
					sendCommand $WORLD "stop"
				fi
				sleep 5
			fi
		done
		printf "\n"
	;;
	restart|reload|force-restart|force-reload)
		printf "Restarting Minecraft Server:"
		# Check for the optional world command line argument.
		if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
			WORLDS="$2"
		elif [ -n "$2" ]; then
			printf "Minecraft world $2 not found!\n"
			printf "  Usage:  $0 $1 <world>\n"
			exit 1
		fi
		# Restart each world requested, start those not already running.
		for WORLD in $WORLDS; do
			printf " $WORLD"
			if [ $(serverRunning $WORLD) = 1 ]; then
				sendCommand $WORLD "say The server is about to restart."
				sendCommand $WORLD "save-all"
				sendCommand $WORLD "save-off"
				sendCommand $WORLD "say Restarting in 5 seconds..."
				sleep 5
				if [ "$(echo $1 | cut -d '-' -f1)" = "force" ]; then
					forceStop $WORLD
				else
					sendCommand $WORLD "stop"
				fi
				sleep 5
			fi;
			start $WORLD
		done
		printf "\n"
	;;
	status|show)
		printf "Minecraft Server Status:\n"
		# Check for the optional world command line argument.
		if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
			WORLDS="$2"
		elif [ -n "$2" ]; then
			printf "Minecraft world $2 not found!\n"
			printf "  Usage:  $0 $1 <world>\n"
			exit 1
		fi
		# Show the status of each world requested.
		for WORLD in $WORLDS; do
			printf "  $WORLD: "
			if [ $(serverRunning $WORLD) = 1 ]; then
				printf "running.\n"
			else
				printf "not running.\n"
			fi
		done
	;;
	send)
		WORLD=$2
		if [ -n "$WORLD" ] && [ $(listContains $WORLD "$WORLDS") = 1 ]; then
			shift 2
			printf "Send command to world $WORLD: $*\n"
			sendCommand $WORLD "$*"
		else
			printf "Minecraft world $WORLD not found!\n"
			printf "  Usage:  $0 $1 <world> <command>\n"
			printf "     ie:  $0 $1 world say \"Hello World!\"\n"
			exit 1
		fi
	;;
	backup)
		printf "Backing up Minecraft Server:"
		# Check for the optional world command line argument.
		if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
			WORLDS="$2"
		elif [ -n "$2" ]; then
			printf "Minecraft world $2 not found!\n"
			printf "  Usage:  $0 $1 <world>\n"
			exit 1
		fi
		# Backup each world requested.
		for WORLD in $WORLDS; do
			printf " $WORLD"
			if [ $(serverRunning $WORLD) = 1 ]; then
				sendCommand $WORLD "say Backing up the world."
				sendCommand $WORLD "save-all"
				sendCommand $WORLD "save-off"
				sleep 20
				fullBackup $WORLD
				sendCommand $WORLD "save-on"
				sendCommand $WORLD "say Backup complete."
			else
				fullBackup $WORLD
			fi
		done
		printf "\n"
	;;
	update)
		printf "Updating the Minecraft Server software...\n"
		# Check for the optional package command line argument.
		if [ -n "$2"  ] && [ $(listContains $2 "$PACKAGES") = 1 ]; then
			PACKAGES="$2"
		elif [ -n "$2" ]; then
			printf "Minecraft software package $2 not found!\n"
			printf "  Usage:  $0 $1 <software package>\n"
			exit 1
		fi
		if [ -n "$(echo $PACKAGES | grep server)" ]; then
			printf "Stopping Minecraft Server:"
			for WORLD in $WORLDS; do
				printf " $WORLD"
				if [ $(serverRunning $WORLD) = 1 ]; then
					sendCommand $WORLD "say The server software is being updated."
					sendCommand $WORLD "say Server restart is imminent."
					sendCommand $WORLD "save-all"
					sendCommand $WORLD "save-off"
					sleep 20
					fullBackup $WORLD
					sendCommand $WORLD "say Restarting in 5 seconds."
					sleep 5
					sendCommand $WORLD "stop"
				else
					fullBackup $WORLD
				fi
			done
			printf "\n"
		fi
		# Update each software package requested.
		printf "Updating software package:"
		for PACKAGE in $PACKAGES; do
			printf " $PACKAGE"
			update $PACKAGE
		done
		printf "\n"
		if [ -n "$(echo $PACKAGES | grep server)" ]; then
			printf "Starting Minecraft Server:"
			for WORLD in $WORLDS; do
				printf " $WORLD"
				start $WORLD
			done
			printf "\n"
		fi
	;;
	c10t|map)
		# Make sure that the c10t software exists.
		if [ ! -e $C10T_BIN ]; then
			printf "c10t software not found, downloading it...\n"
			update "c10t"
		fi
		# Check for the optional world command line argument.
		if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
			WORLDS="$2"
		elif [ -n "$2" ]; then
			printf "Minecraft world $2 not found!\n"
			printf "  Usage:  $0 $1 <world>\n"
			exit 1
		fi
		# Run c10t on each world requested.
		printf "Running c10t mapping:"
		for WORLD in $WORLDS; do
			printf " $WORLD"
			if [ $(serverRunning $WORLD) = 1 ]; then
				sendCommand $WORLD "say The world is about to be mapped with c10t."
				sendCommand $WORLD "save-all"
				sendCommand $WORLD "save-off"
				sleep 20
				fullBackup $WORLD
				c10t $WORLD
				sendCommand $WORLD "save-on"
				sendCommand $WORLD "say Mapping is complete.  You can access the maps at:"
				sendCommand $WORLD "say $MAPS_URL/$WORLD"
			else
				fullBackup $WORLD
				c10t $WORLD
			fi
		done
		printf "\n"
	;;
	*)
		printf "Usage: $0 {start|stop|force-stop|restart|force-restart|status|send|backup|update|c10t} {Optional: world or software package}\n"
		exit 1
	;;
esac
exit 0

1	-
1	+	#! /bin/sh
2		### BEGIN INIT INFO
3		# Provides: minecraft_server
4		# Required-Start: $remote_fs $syslog
5		# Required-Stop: $remote_fs $syslog
6		# Default-Start: 2 3 4 5
7		# Default-Stop: 0 1 6
8		# Short-Description: Minecraft Server control script.
9		# Description: Minecraft Server control script.
10		# Options
11		# start <world> - Start the Minecraft world server. Starts all world servers by default.
12		# stop <world> - Stop the Minecraft world server. Stops all world servers by default.
13		# force-stop <world> - Forcibly stop the Minecraft world server. Forcibly stops all world servers by default.
14		# restart <world> - Restart the Minecraft world server. Restarts all world servers by default.
15		# force-restart <world> - Forcibly restart the Minecraft world server. Forcibly restarts all world servers by default.
16		# status <world> - Display the status of the Minecraft world server. Displays the status of all world servers by default.
17		# send <world> <command> - Send a command to a Minecraft world server.
18		# backup <world> - Backup the Minecraft world. Backup all worlds by default.
19		# c10t <world> - Run the c10t mapping software on the Minecraft world. Maps all worlds by default.
20		# update <software> - Update a software package. Update the server software and all addons by default.
21		# Available software options
22		# server - Minecraft server software.
23		# c10t - Mapping software.
24		### END INIT INFO
25
26
27		USER_NAME=minecraft
28
29		LOCATION="/home/$USER_NAME"
30
31
32		## Minecraft software options.
33
34		# Software packages, used for updating.
35		PACKAGES="server c10t"
36
37		# Minecraft server.
38		SERVER_URL="http://www.minecraft.net/download/minecraft_server.jar"
39		SERVER_LOCATION="$LOCATION/minecraft_server"
40		SERVER_JAR="$SERVER_LOCATION/minecraft_server.jar"
41		SERVER_ARGS="nogui"
42		INITIAL_MEMORY="1024M"
43		MAXIMUM_MEMORY="1024M"
44
45		# c10t mapping software.
46		ARCH=$(uname -m)
47		C10T_URL="http://toolchain.eu/hudson/job/c10t%20HEAD%20Linux%20$ARCH/lastStableBuild/artifact/build/c10t-HEAD-linux-$ARCH.tar.gz"
48		C10T_LOCATION="$LOCATION/c10t"
49		C10T_BIN="$C10T_LOCATION/c10t"
50
51		# Location to place map images, and the URL displayed to users for map access.
52		MAPS_URL="http://minecraft.server.com/maps"
53		MAPS_LOCATION="$LOCATION/maps"
54
55
56		## World configuration.
57
58		WORLDS_LOCATION="$LOCATION/worlds"
59
60		# List of worlds and the ports they are running on. This file will
61		# be generated if missing.
62		# Note: World name should not contain a space, at least for now.
63		# ie:
64		# alpha 25565
65		# beta 25566
66		WORLDS_CONF="$LOCATION/worlds.conf"
67
68		# Default world name and port if worlds.conf is missing.
69		DEFAULT_WORLD="world"
70		DEFAULT_PORT="25565"
71
72
73		## Backup configuration.
74
75		BACKUP_LOCATION="$LOCATION/backups"
76
77		# Length in days that backups survive.
78		BACKUP_FULL_DURATION=31
79
80
81		## Internal Methods.
82
83		getProcessIDs() {
84		# Get the PIDs of the Screen and Java process for the world server.
85		# ARGS: world
86		local SCREEN_PID JAVA_PID
87		SCREEN_PID=$(su -c "$SCREEN -ls" $USER_NAME \| $PERL -ne 'if ($_ =~ /^\t(\d+)\.minecraft-'$1'/) { print $1; }')
88		JAVA_PID=$(ps -a -u $USER_NAME -o pid,ppid,comm \| $PERL -ne 'if ($_ =~ /^\s*(\d+)\s+'$SCREEN_PID'\s+java/) { print $1; }')
89		echo "$SCREEN_PID $JAVA_PID"
90		}
91
92		serverRunning() {
93		# Check to see if the world server is running.
94		# ARGS: world
95		local PIDS
96		PIDS=$(getProcessIDs $1)
97		# Try to determine if the world is running.
98		if [ -n "$(echo $PIDS \| cut -d ' ' -f1)" ] && [ -n "$(echo $PIDS \| cut -d ' ' -f2)" ]; then
99		echo 1
100		else
101		echo 0
102		fi
103		}
104
105		sendCommand() {
106		# Send a command to the world server.
107		# ARGS: world command
108		local COMMAND
109		COMMAND=$(printf "$2\r")
110		su -c "$SCREEN -S minecraft-$1 -p 0 -X stuff \"$COMMAND\"" $USER_NAME
111		if [ ! $? = 0 ]; then
112		printf "Error sending command to server.\n"
113		exit 1
114		fi
115
116		}
117
118		listContains() {
119		# Check whether a list contains something that matches the pattern.
120		# ARGS: pattern list
121		local MATCH
122		MATCH=$(echo \"$2\" \| $PERL -ne 'if ($_ =~ /('$1')/) { print "$1"; }')
123		if [ -n "$MATCH" ]; then
124		echo 1
125		else
126		echo 0
127		fi
128		}
129
130		start() {
131		# Start the world server.
132		# ARGS: world
133		local SERVER_PORT
134		# Make sure that the server directory exists.
135		su -c "mkdir -p $WORLDS_LOCATION/$1" $USER_NAME
136		cd $WORLDS_LOCATION/$1
137		# Make sure that the server properties file exists.
138		if [ ! -e server.properties ]; then
139		SERVER_PORT=$(grep $1 $WORLDS_CONF \| cut -f2)
140		su -c "printf \"# Minecraft server properties\n\" > server.properties" $USER_NAME
141		su -c "printf \"level-name=world\n\" >> server.properties" $USER_NAME
142		su -c "printf \"server-port=$SERVER_PORT\n\" >> server.properties" $USER_NAME
143		fi
144		# Start the server.
145		su -c "$SCREEN -dmS minecraft-$1 $JAVA -Xms$INITIAL_MEMORY -Xmx$MAXIMUM_MEMORY -jar $SERVER_JAR $SERVER_ARGS" $USER_NAME
146		if [ ! $? = 0 ]; then
147		printf "Error starting the server.\n"
148		exit 1
149		fi
150		}
151
152		forceStop() {
153		# Forcibly stop the world server.
154		# ARGS: world
155		local PIDS
156		PIDS=$(getProcessIDs $1)
157		# Try to stop the server cleanly first.
158		sendCommand $1 "stop"
159		sleep 5
160		# Kill the process ids of the world server.
161		kill -9 $PIDS > /dev/null 2>&1
162		}
163
164		fullBackup() {
165		# Backup the world server.
166		# ARGS: world
167		# Grab the date and time.
168		local DATE_TIME
169		DATE_TIME=$(date +%Y-%m-%d-%H:%M:%S)
170		su -c "mkdir -p $BACKUP_LOCATION" $USER_NAME
171		cd $WORLDS_LOCATION
172		su -c "tar -czf $BACKUP_LOCATION/fullBackup-$1-$DATE_TIME.tar.gz $1" $USER_NAME
173		# Cleanup old backups.
174		su -c "find $BACKUP_LOCATION -name fullBackup-$1-* -type f -mtime +$BACKUP_FULL_DURATION -delete" $USER_NAME
175		}
176
177		update() {
178		# Update software package.
179		# ARGS: package
180		case "$1" in
181		server)
182		su -c "mkdir -p $SERVER_LOCATION" $USER_NAME
183		# Backup the old server jar.
184		if [ -e $SERVER_JAR ]; then
185		su -c "mv -f $SERVER_JAR $SERVER_JAR.old" $USER_NAME
186		fi
187		# Download the new server software.
188		su -c "$WGET -qO $SERVER_JAR $SERVER_URL" $USER_NAME
189		# Check for error and restore backup if found.
190		if [ ! $? = 0 ]; then
191		printf "Error updating server software.\n"
192		if [ -e "$SERVER_JAR.old" ]; then
193		su -c "mv -f $SERVER_JAR.old $SERVER_JAR" $USER_NAME
194		fi
195		exit 1
196		fi
197		;;
198		c10t)
199		su -c "mkdir -p $C10T_LOCATION" $USER_NAME
200		# Download the new c10t mapping software.
201		cd $C10T_LOCATION
202		su -c "$WGET -qO c10t.tar.gz $C10T_URL" $USER_NAME
203		if [ ! $? = 0 ]; then
204		printf "Error updating c10t.\n"
205		exit 1
206		fi
207		su -c "tar xzf c10t.tar.gz" $USER_NAME
208		su -c "cp -R c10t-HEAD/* ." $USER_NAME
209		su -c "rm -R c10t-HEAD" $USER_NAME
210		;;
211		*)
212		printf "Unknown software package: $1\n"
213		exit 1
214		;;
215		esac
216		}
217
218		c10t() {
219		# Run c10t mapping software on the server.
220		# ARGS: world
221		su -c "mkdir -p $MAPS_LOCATION/$1" $USER_NAME
222		# Make sure that the world files are actually there before mapping.
223		if [ -e "$WORLDS_LOCATION/$1/server.properties" ]; then
224		su -c "$C10T_BIN -s -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/surface.png" $USER_NAME
225		su -c "$C10T_BIN -s -c -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves.png" $USER_NAME
226		su -c "$C10T_BIN -s -c -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves_heightmap.png" $USER_NAME
227		su -c "$C10T_BIN -s -a -i 56 -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/diamonds_heightmap.png" $USER_NAME
228		su -c "$C10T_BIN -s -a -i 4 -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/cobble_heightmap.png" $USER_NAME
229		su -c "$C10T_BIN -s -q -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/surface_oblique.png" $USER_NAME
230		su -c "$C10T_BIN -s -q -c -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves_oblique.png" $USER_NAME
231		fi
232		}
233
234		## Begin.
235
236		# Make sure that Java, Perl, GNU Screen, and GNU Wget are installed.
237		JAVA=$(which java)
238		PERL=$(which perl)
239		SCREEN=$(which screen)
240		WGET=$(which wget)
241		if [ ! -e $JAVA ]; then
242		printf "Java not found!\n"
243		printf "Try installing this with:\n"
244		printf "sudo apt-get install openjdk-6-jre\n"
245		exit 1
246		fi
247		if [ ! -e $PERL ]; then
248		printf "Perl not found!\n"
249		printf "Try installing this with:\n"
250		printf "sudo apt-get install perl\n"
251		exit 1
252		fi
253		if [ ! -e $SCREEN ]; then
254		printf "GNU Screen not found!\n"
255		printf "Try installing this with:\n"
256		printf "sudo apt-get install screen\n"
257		exit 1
258		fi
259		if [ ! -e $WGET ]; then
260		printf "GNU Wget not found!\n"
261		printf "Try installing this with:\n"
262		printf "sudo apt-get install wget\n"
263		exit 1
264		fi
265
266		# Make sure that the minecraft user exists, print a sane error if not.
267		if [ ! -n "$(grep $USER_NAME /etc/passwd)" ]; then
268		printf "This script requires that a user account named $USER_NAME exist on this system.\n"
269		printf "Try adding this user:\n"
270		printf "sudo adduser $USER_NAME\n"
271		exit 1
272		fi
273
274		# From here on out the script needs to be run as root, print a sane error if running as a user.
275		WHOAMI=$(whoami)
276		if [ ! "$WHOAMI" = "root" ]; then
277		printf "This script needs to be run as root, you seem to be $WHOAMI.\n"
278		printf "Try running this with sudo:\n"
279		printf "sudo $0 start\n"
280		exit 1
281		fi
282
283		# Make sure that the worlds.conf file exists.
284		if [ ! -e $WORLDS_CONF ]; then
285		su -c "printf \"$DEFAULT_WORLD\t$DEFAULT_PORT\n\" > $WORLDS_CONF" $USER_NAME
286		fi
287
288		# Grab the list of worlds.
289		WORLDS=$(cut -f1 $WORLDS_CONF)
290
291		# Respond to the command line arguments.
292		case "$1" in
293		start)
294		printf "Starting Minecraft Server:"
295		# Make sure that the server software exists.
296		if [ ! -e $SERVER_JAR ]; then
297		printf "Server software not found, downloading it...\n"
298		update "server"
299		fi
300		# Check for the optional world command line argument.
301		if [ -n "$2" ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
302		WORLDS="$2"
303		elif [ -n "$2" ]; then
304		printf "Minecraft world $2 not found!\n"
305		printf " Usage: $0 $1 <world>\n"
306		exit 1
307		fi
308		# Start each world requested, if not already running.
309		for WORLD in $WORLDS; do
310		if [ $(serverRunning $WORLD) = 0 ]; then
311		printf " $WORLD"
312		start $WORLD
313		fi
314		done
315		printf "\n"
316		;;
317		stop\|force-stop)
318		printf "Stopping Minecraft Server:"
319		# Check for the optional world command line argument.
320		if [ -n "$2" ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
321		WORLDS="$2"
322		elif [ -n "$2" ]; then
323		printf "Minecraft world $2 not found!\n"
324		printf " Usage: $0 $1 <world>\n"
325		exit 1
326		fi
327		# Stop each world requested, if running.
328		for WORLD in $WORLDS; do
329		# Try to stop the world cleanly.
330		if [ $(serverRunning $WORLD) = 1 ]; then
331		printf " $WORLD"
332		sendCommand $WORLD "say The server is about to go down."
333		sendCommand $WORLD "save-all"
334		sendCommand $WORLD "save-off"
335		sendCommand $WORLD "say The server is going down in 5 seconds..."
336		sleep 5
337		if [ "$1" = "force-stop" ]; then
338		forceStop $WORLD
339		else
340		sendCommand $WORLD "stop"
341		fi
342		sleep 5
343		fi
344		done
345		printf "\n"
346		;;
347		restart\|reload\|force-restart\|force-reload)
348		printf "Restarting Minecraft Server:"
349		# Check for the optional world command line argument.
350		if [ -n "$2" ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
351		WORLDS="$2"
352		elif [ -n "$2" ]; then
353		printf "Minecraft world $2 not found!\n"
354		printf " Usage: $0 $1 <world>\n"
355		exit 1
356		fi
357		# Restart each world requested, start those not already running.
358		for WORLD in $WORLDS; do
359		printf " $WORLD"
360		if [ $(serverRunning $WORLD) = 1 ]; then
361		sendCommand $WORLD "say The server is about to restart."
362		sendCommand $WORLD "save-all"
363		sendCommand $WORLD "save-off"
364		sendCommand $WORLD "say Restarting in 5 seconds..."
365		sleep 5
366		if [ "$(echo $1 \| cut -d '-' -f1)" = "force" ]; then
367		forceStop $WORLD
368		else
369		sendCommand $WORLD "stop"
370		fi
371		sleep 5
372		fi;
373		start $WORLD
374		done
375		printf "\n"
376		;;
377		status\|show)
378		printf "Minecraft Server Status:\n"
379		# Check for the optional world command line argument.
380		if [ -n "$2" ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
381		WORLDS="$2"
382		elif [ -n "$2" ]; then
383		printf "Minecraft world $2 not found!\n"
384		printf " Usage: $0 $1 <world>\n"
385		exit 1
386		fi
387		# Show the status of each world requested.
388		for WORLD in $WORLDS; do
389		printf " $WORLD: "
390		if [ $(serverRunning $WORLD) = 1 ]; then
391		printf "running.\n"
392		else
393		printf "not running.\n"
394		fi
395		done
396		;;
397		send)
398		WORLD=$2
399		if [ -n "$WORLD" ] && [ $(listContains $WORLD "$WORLDS") = 1 ]; then
400		shift 2
401		printf "Send command to world $WORLD: $*\n"
402		sendCommand $WORLD "$*"
403		else
404		printf "Minecraft world $WORLD not found!\n"
405		printf " Usage: $0 $1 <world> <command>\n"
406		printf " ie: $0 $1 world say \"Hello World!\"\n"
407		exit 1
408		fi
409		;;
410		backup)
411		printf "Backing up Minecraft Server:"
412		# Check for the optional world command line argument.
413		if [ -n "$2" ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
414		WORLDS="$2"
415		elif [ -n "$2" ]; then
416		printf "Minecraft world $2 not found!\n"
417		printf " Usage: $0 $1 <world>\n"
418		exit 1
419		fi
420		# Backup each world requested.
421		for WORLD in $WORLDS; do
422		printf " $WORLD"
423		if [ $(serverRunning $WORLD) = 1 ]; then
424		sendCommand $WORLD "say Backing up the world."
425		sendCommand $WORLD "save-all"
426		sendCommand $WORLD "save-off"
427		sleep 20
428		fullBackup $WORLD
429		sendCommand $WORLD "save-on"
430		sendCommand $WORLD "say Backup complete."
431		else
432		fullBackup $WORLD
433		fi
434		done
435		printf "\n"
436		;;
437		update)
438		printf "Updating the Minecraft Server software...\n"
439		# Check for the optional package command line argument.
440		if [ -n "$2" ] && [ $(listContains $2 "$PACKAGES") = 1 ]; then
441		PACKAGES="$2"
442		elif [ -n "$2" ]; then
443		printf "Minecraft software package $2 not found!\n"
444		printf " Usage: $0 $1 <software package>\n"
445		exit 1
446		fi
447		if [ -n "$(echo $PACKAGES \| grep server)" ]; then
448		printf "Stopping Minecraft Server:"
449		for WORLD in $WORLDS; do
450		printf " $WORLD"
451		if [ $(serverRunning $WORLD) = 1 ]; then
452		sendCommand $WORLD "say The server software is being updated."
453		sendCommand $WORLD "say Server restart is imminent."
454		sendCommand $WORLD "save-all"
455		sendCommand $WORLD "save-off"
456		sleep 20
457		fullBackup $WORLD
458		sendCommand $WORLD "say Restarting in 5 seconds."
459		sleep 5
460		sendCommand $WORLD "stop"
461		else
462		fullBackup $WORLD
463		fi
464		done
465		printf "\n"
466		fi
467		# Update each software package requested.
468		printf "Updating software package:"
469		for PACKAGE in $PACKAGES; do
470		printf " $PACKAGE"
471		update $PACKAGE
472		done
473		printf "\n"
474		if [ -n "$(echo $PACKAGES \| grep server)" ]; then
475		printf "Starting Minecraft Server:"
476		for WORLD in $WORLDS; do
477		printf " $WORLD"
478		start $WORLD
479		done
480		printf "\n"
481		fi
482		;;
483		c10t\|map)
484		# Make sure that the c10t software exists.
485		if [ ! -e $C10T_BIN ]; then
486		printf "c10t software not found, downloading it...\n"
487		update "c10t"
488		fi
489		# Check for the optional world command line argument.
490		if [ -n "$2" ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
491		WORLDS="$2"
492		elif [ -n "$2" ]; then
493		printf "Minecraft world $2 not found!\n"
494		printf " Usage: $0 $1 <world>\n"
495		exit 1
496		fi
497		# Run c10t on each world requested.
498		printf "Running c10t mapping:"
499		for WORLD in $WORLDS; do
500		printf " $WORLD"
501		if [ $(serverRunning $WORLD) = 1 ]; then
502		sendCommand $WORLD "say The world is about to be mapped with c10t."
503		sendCommand $WORLD "save-all"
504		sendCommand $WORLD "save-off"
505		sleep 20
506		fullBackup $WORLD
507		c10t $WORLD
508		sendCommand $WORLD "save-on"
509		sendCommand $WORLD "say Mapping is complete. You can access the maps at:"
510		sendCommand $WORLD "say $MAPS_URL/$WORLD"
511		else
512		fullBackup $WORLD
513		c10t $WORLD
514		fi
515		done
516		printf "\n"
517		;;
518		*)
519		printf "Usage: $0 {start\|stop\|force-stop\|restart\|force-restart\|status\|send\|backup\|update\|c10t} {Optional: world or software package}\n"
520		exit 1
521		;;
522		esac
523		exit 0