source: scripts/usr/local/bin/7dtd-common.sh @ 14

#!/bin/bash
# Version 3

# Provides common functions for 7dtd-scripts. Not intended to be run directly.

# Check if the script is run as root (exit otherwise) and load global config
checkRootLoadConf() {
        if [ `id -u` -ne 0 ]; then
                echo "This script has to be run as root!"
                exit 10
        fi
        . /etc/7dtd.conf
}

# Get the config path for the given instance
# Params:
#   1: Instance name
# Returns:
#   Config path for instance
getInstancePath() {
        echo $SDTD_BASE/instances/$1
}

# Check if the given instance name is an existing instance
# Params:
#   1: Instance name
# Returns:
#   0/1 instance not valid/valid
isValidInstance() {
        if [ -z $1 ]; then
                echo 0
        else
                if [ ! -d $(getInstancePath $1) ]; then
                        echo 0
                else
                        if [ ! -f $(getInstancePath $1)/config.xml ]; then
                                echo 0
                        else
                                echo 1
                        fi
                fi
        fi
}

# Check if the given instance is valid, exit the script otherwise
# Params:
#   1: instance name
checkInstanceValid() {
        if [ -z $1 ]; then
                echo "Missing parameter <instance>"
                exit 1
        fi
        if [ $(isValidInstance $1) -eq 0 ]; then
                echo "'$1' is not a valid instance"
                exit 1
        fi
}

# Check if the given instance is currently running
# Params:
#   1: Instance name
# Returns:
#   0 = not running
#   1 = running
isRunning() {
        start-stop-daemon --status --pidfile $(getInstancePath $1)/7dtd.pid
        if [ $? -eq 0 ]; then
                echo 1
        else
                echo 0
        fi
}

# Get list of defined instances
# Returns:
#   List of instances
getInstanceList() {
        for IF in $SDTD_BASE/instances/*; do
                I=`basename $IF`
                if [ $(isValidInstance $I) -eq 1 ]; then
                        echo $I
                fi
        done
}

# Get the PID of the instance if it is running, 0 otherwise
# Params:
#   1: Instance name
# Returns:
#   0 if not running
#   PID otherwise
getInstancePID() {
        run=$(isRunning $1)
        if [ $run -eq 1 ]; then
                cat $(getInstancePath $1)/7dtd.pid
        else
                echo 0
        fi
}

# Get a single value from a serverconfig
# Params:
#   1: Instance name
#   2: Property name
# Returns:
#   Property value
getConfigValue() {
        CONF=$(getInstancePath $1)/config.xml
        xmlstarlet sel -t -v "/ServerSettings/property[@name='$2']/@value" $CONF
}

# Send a single command to the telnet port
# Params:
#   1: Instance name
#   2: Command
# Returns:
#   String of telnet output
telnetCommand() {
        TEL_ENABLED=$(getConfigValue $1 TelnetEnabled)
        TEL_PORT=$(getConfigValue $1 TelnetPort)
        TEL_PASS=$(getConfigValue $1 TelnetPassword)    
        if [ "$TEL_ENABLED" = "true" ] && [ -n "$TEL_PASS" ]; then
                echo -e "$TEL_PASS\n$2\nexit" | nc -q 2 127.0.0.1 $TEL_PORT
        else
                echo "Telnet not enabled or no password set."
        fi
}