GDP

#!/bin/sh

{ test -r /usr/local/etc/gdp.conf.sh && . /usr/local/etc/gdp.conf.sh; } ||

	{ test -r /etc/gdp.conf.sh && . /etc/gdp.conf.sh; }

#

#  Create logs and adjust configuration files for new sensors.

#

#    Usage: $0 mqtt-gateway-config sensor ...

#	Verifies that each sensor is not already in the config file.

#	If not, creates the log file if it does not already exist

#	The configuration file must already exist, even if it has

#	no sensors listed.

#

# configure defaults

: ${GDP_ROOT:=/usr}

if [ "$GDP_ROOT" = "/usr" ]

then

	: ${GDP_ETC:=/etc/gdp}

else

	: ${GDP_ETC:=$GDP_ROOT/etc}

fi

: ${GDP_VAR:=/var/swarm/gdp}

: ${GDP_KEYS_DIR:=$GDP_ETC/keys}

: ${GDP_LOG_DIR:=/var/log/gdp}

: ${GDP_USER:=gdp}

: ${MQTT_GATEWAY_ARGS:=-D*=2}

: ${MQTT_GATEWAY_LOG:=$GDP_LOG_DIR/mqtt-gdp-gateway.log}

: ${LLOGGER:=llogger}

EX_USAGE=64

EX_OSFILE=72

EX_CONFIG=78

# if we are running as root, start over as gdp

test `whoami` = "root" && exec sudo -u $GDP_USER $0 "$@"

if [ `whoami` != "$GDP_USER" ]

then

	echo "[FATAL] Must be run as $GDP_USER or root"

	exit $EX_USAGE

fi

if [ $# -lt 2 ]

then

	echo "[FATAL] Usage: $0 mqtt-gateway-config sensor ..."

	exit $EX_USAGE

fi

echo "[INFO] Running $0 with GDP_ROOT=$GDP_ROOT GDP_ETC=$GDP_ETC"

# get the short host name

shorthost=`basename "$1" ".conf" | sed -e 's/^mqtt-gateway.//' -e 's/\..*//'`

shift

# verify the configuration file

if [ ! -e $GDP_ETC/mqtt-gateway.$shorthost.conf ]

then

	echo "[FATAL] No configuration $GDP_ETC/mqtt-gateway.$shorthost.conf"

	exit $EX_CONFIG

fi

# save the names of the devices we want to provision

devices=$@

# get the existing configuration file and take the first line for the log name

configfile=$GDP_ETC/mqtt-gateway.$shorthost.conf

config=`sed -e 's/#.*//' $configfile`

set -- $config

log_root=$1

shift

# save the clean configuration (just existing devices, white space removed)

config="$@"

# now we can go back to devices in our arguments

set -- $devices

# if there is no keys directory, be sure to create it

if [ ! -d $GDP_KEYS_DIR ]

then

	if ! mkdir -p $GDP_KEYS_DIR

	then

		echo "[FATAL] Cannot create keys directory $GDP_KEYS_DIR"

		exit $EX_OSFILE

	fi

	chmod 755 $GDP_KEYS_DIR

fi

announce_keys_dir=false

for i

do

	echo "[INFO] Provisioning for sensor $i on gateway $shorthost"

	sensor=`echo $i | tr '[A-F]' '[a-f]' | sed -e 's/[^0-9a-f]//g'`

	if [ "$sensor" != "$i" ]

	then

		echo "[INFO] Modified $i to $sensor"

	fi

	# check for duplicates --- if so, just pass

	addconfig=true

	if echo $config | grep -q $sensor

	then

		addconfig=false

		echo "[WARN] Sensor $sensor already provisioned on $shorthost"

	else

		# check to see if it already exists in another configuration

		dups=`grep -l "^[ 	]*$sensor" $GDP_ETC/mqtt-gateway.*.conf`

		if [ ! -z "$dups" ]

		then

			echo "[ERROR] Sensor $sensor already provisioned in file"

			echo "[ERROR]    $dups"

			echo "[ERROR] Please edit this configuration and try again."

			continue

		fi

	fi

	# see if the log already exists --- if not, create

	if ! $GDP_ROOT/bin/log-exists $log_root.device.$sensor

	then

		echo "[INFO] Creating log $log_root.device.$sensor"

		if $GDP_ROOT/bin/log-create -K$GDP_KEYS_DIR -e none \

			$log_root.device.$sensor

		then

			echo "[INFO] Created log $log_root.device.$sensor"

			announce_keys_dir=true

		else

			echo "[ERROR] Could not create log; skipping $sensor"

		fi

	else

		echo "[WARN] $log_root.device.$sensor already exists;" \

				"continuing anyway"

	fi

	if $addconfig

	then

		# append device name to configuration file

		echo "[INFO] Adding configuration for $sensor to $configfile"

		echo $sensor >> $configfile

	fi

done

if $announce_keys_dir

then

	echo "[INFO] New private key(s) are in $GDP_KEYS_DIR"

fi