add a configurable daemon that warns on low battery

Signed-off-by: Maarten van Gompel <proycon@anaproy.nl>

Makefile

@@ -5,6 +5,7 @@ PREFIX:=/usr
 PROGRAMS = \
 	programs/sxmo_setpineled \
 	programs/sxmo_megiaudioroute \
+	programs/sxmo_batterymonitor \
 	programs/sxmo_vibratepine
 
 all: $(PROGRAMS)
@@ -23,8 +24,11 @@ programs/sxmo_megiaudioroute: programs/sxmo_megiaudioroute.c
 programs/sxmo_vibratepine: programs/sxmo_vibratepine.c
 	gcc -o programs/sxmo_vibratepine programs/sxmo_vibratepine.c
 
+programs/sxmo_batterymonitor: programs/sxmo_batterymonitor.c
+	gcc -o programs/sxmo_batterymonitor programs/sxmo_batterymonitor.c
+
 clean:
-	rm -f programs/sxmo_setpineled programs/sxmo_megiaudioroute programs/sxmo_vibratepine
+	rm -f programs/sxmo_setpineled programs/sxmo_megiaudioroute programs/sxmo_vibratepine programs/sxmo_batterymonitor
 
 install: $(PROGRAMS)
 	cd configs && find . -type f -exec install -D -m 0644 "{}" "$(DESTDIR)$(PREFIX)/share/sxmo/{}" \; && cd ..
@@ -40,6 +44,8 @@ install: $(PROGRAMS)
 
 	install -D -m 0644 -t $(DESTDIR)$(PREFIX)/share/applications/ configs/xdg/mimeapps.list
 
+	install -D -m 0644 -t $(DESTDIR)/etc/sudoers.d/ configs/sudo/poweroff
+
 	install -D -m 0644 -T configs/xorg/monitor.conf $(DESTDIR)$(PREFIX)/share/X11/xorg.conf.d/90-monitor.conf
 
 	mkdir -p $(DESTDIR)/etc/NetworkManager/dispatcher.d
@@ -49,9 +55,12 @@ install: $(PROGRAMS)
 	# Bin
 	install -D -t $(DESTDIR)$(PREFIX)/bin scripts/*/*
 
+	install -D -m 0755 programs/sxmo_batterymonitor $(DESTDIR)$(PREFIX)/bin/
+
 	install -D -m 0755 programs/sxmo_setpineled $(DESTDIR)$(PREFIX)/bin/
 
 	install -D programs/sxmo_megiaudioroute $(DESTDIR)$(PREFIX)/bin/
+
 	install -D programs/sxmo_vibratepine $(DESTDIR)$(PREFIX)/bin/
 
 	echo "NOTICE: Do not forget to add sxmo-setpermissions to your init system, e.g. for openrc: rc-update add sxmo-setpermissions default && rc-service sxmo-setpermissions start" >&2

configs/appcfg/xinit_template

@@ -69,3 +69,22 @@ export SXMO_LOCK_SCREEN_OFF=1
 
 # Or, enable vibration feedback on keypress
 #export KEYBOARD_ARGS="-o | clickclack -V"
+
+## Configuration parameters for sxmo_batterymonitor ##
+
+# The following values are the defaults
+
+# enable (1) or disable (0) the warning
+#export BM_WARN=1
+
+# enable (1) or disable (0) repeating warnings and hook executions
+#export BM_LOOP=0
+
+# set a threshold for the warning
+#export BM_WARN_THRESHOLD=15
+
+# set a threshold for the action (executes battery hook)
+#export BM_WARN_CRIT_THRESHOLD=5
+
+#let the daemon check every 5 minutes (300s)
+sxmo_batterymonitor -i 300

configs/default_hooks/battery

@@ -0,0 +1,6 @@
+#!/usr/bin/env sh
+
+# This script is executed when sxmo_batterymonitor detects a battery capacity below the set threshold
+# You can use it to shutdown, play a notification sound, send a message, etc
+
+mpv --no-video /usr/share/sxmo/notify.ogg >/dev/null && notify-send \"battery low\" && sxmo_vibratepine 1500 &

configs/default_hooks/battery_crit

@@ -0,0 +1,6 @@
+#!/usr/bin/env sh
+
+# This script is executed when sxmo_batterymonitor detects a battery capacity below the set threshold
+# You can use it to shutdown, play a notification sound, send a message, etc
+
+sudo busybox poweroff

configs/sudo/poweroff

@@ -0,0 +1 @@
+ALL ALL=NOPASSWD: /bin/busybox poweroff

programs/sxmo_batterymonitor.c

@@ -0,0 +1,87 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <syslog.h>
+
+static void help(){
+	printf("Usage: sxmo_batterymonitor [POSIX style options]\nPOSIX options:\n-h\t\tprint help\n-i\tinterval\t set an interval in seconds");
+	exit(EXIT_SUCCESS);
+}
+
+void term(){
+	syslog (LOG_NOTICE, "sxmo_batterymonitor daemon terminated.");
+	closelog();
+}
+
+int main(int argc, char* argv[], char* envp[]){
+	int interval=10;
+	if (argc < 3){
+		help();
+	}
+	if ( strcmp(argv[1], "-i") == 0 ){
+		interval = atoi(argv[2]);
+	}
+	else{
+		help();
+	}
+	if (system("pidof -o $PPID sxmo_batterymonitor > /dev/null") == 0){
+		printf("Another daemon is already running -- exiting");
+		exit(EXIT_FAILURE);
+	}
+	if( daemon(0,0) != 0){
+		exit(EXIT_FAILURE);
+	}
+	openlog ("sxmo_batterymonitor", LOG_PID, LOG_DAEMON);
+	syslog (LOG_NOTICE, "sxmo_batterymonitor daemon started.");
+	setenv("BATTERY_DEVICE","/sys/class/power_supply/axp20x-battery",0);
+	setenv("DISPLAY",":0",0);
+	setenv("BM_LOOP","0",0);
+	setenv("BM_WARN","1",0);
+	setenv("BM_WARN_THRESHOLD","15",0);
+	setenv("BM_WARN_CRIT_THRESHOLD","5",0);
+	char* device = getenv("BATTERY_DEVICE");
+	char* cap = "/capacity",data=0;
+	char* path= strcat(device,cap);
+	int c=0,wrn=0,bm_disable_warn=0,bm_warn_threshold=15,bm_warn_crit_threshold=5,loop=0;
+	loop = atoi(getenv("BM_LOOP"));
+	bm_disable_warn = atoi(getenv("BM_WARN"));
+	bm_warn_threshold = atoi(getenv("BM_WARN_THRESHOLD"));
+	bm_warn_crit_threshold = atoi(getenv("BM_WARN_CRIT_THRESHOLD"));
+	while (1){
+		FILE *ptr = fopen(path,"r");
+		fgets(&data,5,ptr);
+		c = atoi(&data);
+		switch( loop ){
+			case 1:
+				if( (bm_disable_warn == 1) && (c < bm_warn_threshold) ){
+					system("$XDG_CONFIG_HOME/sxmo/hooks/battery &");
+				}
+				if( c < bm_warn_crit_threshold ){
+					system("$XDG_CONFIG_HOME/sxmo/hooks/battery_crit &");
+				}
+			default:
+				if( (bm_disable_warn == 1) && (c < bm_warn_threshold) && (wrn == 0)){
+					wrn = 1;
+					system("$XDG_CONFIG_HOME/sxmo/hooks/battery &");
+				}
+				if( (c < bm_warn_crit_threshold) && (wrn != 2) ){
+					wrn=2;
+					system("$XDG_CONFIG_HOME/sxmo/hooks/battery_crit &");
+				}
+				if( c >= bm_warn_crit_threshold ){
+					wrn = 1;
+				}
+				if( c >= bm_warn_threshold ){
+					wrn = 0;
+				}
+		}
+		fclose(ptr);
+		sleep(interval);
+	}
+	term();
+	exit(EXIT_FAILURE);
+}

scripts/core/sxmo_migrate.sh

@@ -38,6 +38,8 @@ defaultconfigs() {
 	defaultconfig /usr/share/sxmo/default_hooks/ring "$XDG_CONFIG_HOME/sxmo/hooks/ring" 744
 	defaultconfig /usr/share/sxmo/default_hooks/rtcwake "$XDG_CONFIG_HOME/sxmo/hooks/rtcwake" 744
 	defaultconfig /usr/share/sxmo/default_hooks/sms "$XDG_CONFIG_HOME/sxmo/hooks/sms" 744
+	defaultconfig /usr/share/sxmo/default_hooks/battery "$XDG_CONFIG_HOME/sxmo/hooks/battery" 744
+	defaultconfig /usr/share/sxmo/default_hooks/battery_crit "$XDG_CONFIG_HOME/sxmo/hooks/battery_crit" 744
 }
 
 defaultconfigs