Implementation of brmdoor downstairs

brmdoor-rpi/brmdoor-rpi.sh

@@ -0,0 +1,192 @@
+#!/bin/bash
+
+GPIO_LOCK=24
+GPIO_LED=22
+GPIO_BEEP=23
+
+GPIO_SWITCH=18
+GPIO_MAGSWITCH=17
+
+
+NFC_BINARY=/root/brmdoor/nfc-getcard
+ALLOWED_LIST=/root/brmdoor/allowed.list
+
+IRSSIFIFO=/home/brmdoor/.irssi/remote-control
+IRCCHANS=("#brmlab" "#brmbiolab" "#brmstatus")
+IRSSITOPICS=/home/brmdoor/.irssi/topics/
+
+
+# WARNING - OPEN/DOOR are stored as GPIO values. Since we have pullups and switches that grounds these pins, values are inverted (ie. 1 means "CLOSED")
+OPEN=1
+DOOR=1
+UNLOCKED=0
+
+LOCK_TIMEOUT=3s
+
+IGNORE_ALARM_SET=10
+
+IGNORE_ALARM=0
+
+
+export LD_LIBRARY_PATH=/usr/local/lib
+
+
+clean_gpio() {
+	for i in $GPIO_LOCK $GPIO_LED $GPIO_BEEP $GPIO_SWITCH $GPIO_MAGSWITCH; do
+		echo in > /sys/class/gpio/gpio${i}/direction
+		echo $i > /sys/class/gpio/unexport
+	done
+}
+
+
+beep_invalid() {
+	for i in `seq 1 5`; do
+		echo 1 > /sys/class/gpio/gpio${GPIO_BEEP}/value
+		sleep 0.05s
+		echo 0 > /sys/class/gpio/gpio${GPIO_BEEP}/value
+		sleep 0.05s
+	done
+}
+
+beep_alarm() {
+	for i in `seq 1 5`; do
+		echo 1 > /sys/class/gpio/gpio${GPIO_BEEP}/value
+		sleep 0.5s
+		echo 0 > /sys/class/gpio/gpio${GPIO_BEEP}/value
+		sleep 0.5s
+	done
+}
+
+irc_message() {
+	if [ ! -p "$IRSSIFIFO" ]; then
+		echo "irssi fifo '$IRSSIFIFO' does not exist!"
+		return
+	fi
+	for chan in ${IRCCHANS[*]}; do
+		echo "MSG $chan $1" > "$IRSSIFIFO"
+	done
+}
+
+irc_status() {
+	if [ ! -p "$IRSSIFIFO" ]; then
+		echo "irssi fifo '$IRSSIFIFO' does not exist!"
+		return
+	fi
+	echo "TINFO" > "$IRSSIFIFO"
+	for chan in ${IRCCHANS[*]}; do
+		T=`cat "${IRSSITOPICS}/${chan}"`
+		NT=`echo "$T"|sed "s/BRMBIOLAB OPEN\|BRMBIOLAB CLOSED/BRMBIOLAB $1/"`
+		if [ "$NT" = "$T" ]; then
+			continue;
+		fi
+		echo "TOPIC $chan $NT" > "$IRSSIFIFO"
+	done
+
+}
+
+log_message() {
+	echo "`date "+%Y-%m-%d %T"` $1" >> ~/brmdoor.log
+}
+
+trap clean_gpio EXIT
+
+
+for i in $GPIO_LOCK $GPIO_LED $GPIO_BEEP $GPIO_SWITCH $GPIO_MAGSWITCH; do
+	echo $i > /sys/class/gpio/export
+done
+
+for i in $GPIO_LOCK $GPIO_LED $GPIO_BEEP; do
+	echo "out" > /sys/class/gpio/gpio${i}/direction
+done
+
+for i in $GPIO_SWITCH $GPIO_MAGSWITCH; do
+	echo "in" > /sys/class/gpio/gpio${i}/direction
+done
+
+
+LOOP=0
+
+while true; do
+	CARD=`$NFC_BINARY`
+	if [ $? -ne 0 ]; then
+		
+		log_message "NFC_FAILURE"
+		logger -p user.error "[biodoor] NFC failure"
+		irc_message "[biodoor] NFC error! Might be out of order!"
+		sleep 15s
+	fi
+
+	if [ $IGNORE_ALARM -gt 0 ]; then
+		let IGNORE_ALARM=$IGNORE_ALARM-1
+	fi
+	
+	if [ -n "$CARD" ]; then # we have a card
+		NAME=`grep -i "^[0-9a-zA-Z_-]* ${CARD}$" "$ALLOWED_LIST"| cut -d ' ' -f 1`
+		if [ -z "$NAME" ]; then
+			log_message "UNKNOWN_CARD $CARD"
+			logger "[biodoor] unauthorized access denied for card $CARD"
+			irc_message "[biodoor] unauthorized request denied!"
+			beep_invalid
+		else
+			log_message "DOOR_UNLOCKED $NAME $CARD"
+			logger "[biodoor] unlocked by $NAME $CARD"
+			irc_message "[biodoor] door unlocked"
+			echo 1 > /sys/class/gpio/gpio${GPIO_LOCK}/value
+			echo 1 > /sys/class/gpio/gpio${GPIO_BEEP}/value
+
+			sleep $LOCK_TIMEOUT
+			echo 0 > /sys/class/gpio/gpio${GPIO_LOCK}/value
+			echo 0 > /sys/class/gpio/gpio${GPIO_BEEP}/value
+			IGNORE_ALARM=$IGNORE_ALARM_SET
+		fi
+	fi
+
+	# check open/closed status
+	CURRENT_OPEN=`cat /sys/class/gpio/gpio${GPIO_SWITCH}/value`
+	if [ $CURRENT_OPEN -eq 1 -a $OPEN -eq 0 ]; then
+		log_message "STATUS_CLOSED"
+		irc_message "BRMBIOLAB is now *CLOSED*"
+		irc_status "CLOSED"
+		IGNORE_ALARM=$IGNORE_ALARM_SET
+	fi
+	if [ $CURRENT_OPEN -eq 0 -a $OPEN -eq 1 ]; then
+		log_message "STATUS_OPEN"
+		irc_message "BRMBIOLAB is now *OPEN*"
+		irc_status "OPEN"
+
+	fi
+
+	CURRENT_DOOR=`cat /sys/class/gpio/gpio${GPIO_MAGSWITCH}/value`
+
+	OPEN=$CURRENT_OPEN
+
+	if [ $CURRENT_DOOR -eq 1 ] && [ $DOOR -eq 0 ] && [ $OPEN -eq 1 ] && [ $IGNORE_ALARM -eq 0 ]; then # doplnit timeout
+		log_message "DOOR_ALARM"
+		irc_message "[biodoor] alarm (door opened without unlock)!!!"
+
+		beep_alarm &
+	fi
+
+	DOOR=$CURRENT_DOOR
+
+
+	# just the led blinking stuff	
+	if [ $LOOP -le 1 ]; then
+		if [ $OPEN -eq 1 ]; then
+			echo 0 > /sys/class/gpio/gpio${GPIO_LED}/value
+		else
+			echo 1 > /sys/class/gpio/gpio${GPIO_LED}/value
+		fi
+	fi
+
+	if [ $LOOP -gt 5 ]; then
+		LOOP=0
+		if [ $OPEN -eq 1 ]; then
+			echo 1 > /sys/class/gpio/gpio${GPIO_LED}/value
+		else
+			echo 0 > /sys/class/gpio/gpio${GPIO_LED}/value
+		fi
+	fi
+
+	let LOOP=$LOOP+1
+done