Import Upstream version 0.4.1

6 files changed, 1493 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
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+++ b/ChangeLog
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+* brightd-0.4.1 (18. Oct 2008)
+
+18. Oct 2008; Phillip Berndt brightd.{1,x11_no_x11} Makefile
+ Merged manpages into one (using groff conditions)
+ /sbin | /bin optional in Makefile
+
+18. Oct 2008; Hannes von Haugwitz brightd.{c,1.x11,1.no_x11} Makefile:
+ Fixed bug with pidfile creation in daemon mode
+ Added different manpages for x11 and no x11 mode
+ Some additional changes in Makefile
+
+* brightd-0.4 (17. Oct 2008)
+
+17. Oct 2008; Hannes von Haugwitz brightd.{c,1} Makefile:
+ Added `-P' for PID-file creation
+ X11 support is optional from now on (but enabled by default in Makefile)
+ Some minor fixes
+
+17. Sep 2007; Richard Weinberger brightd.c:
+ Removed useless argc == 0 block
+
+* brightd-0.4_beta4 (21. Jul 2007)
+
+21. Jul 2007; Phillip Berndt brightd.c brightd.1:
+ -e does not need to contain event anymore, since
+ some people do not have event files
+
+09. Jul 2007; Phillip Berndt brightd.c brightd.1:
+ Brightness file is only opened once now
+
+* brightd-0.3_beta2 (08. July 2007)
+
+08. Jul 2007; Phillip Berndt brightd.c:
+ Modified tge way -f works, can be used twice now
+
+08. Jul 2007; Phillip Berndt brightd.c brightd.1:
+ event sources may now be filtered to prevent brightd from using undesired
+ sources such as hdaps (reported by
+ Hannes von Haugwitz <hannes@vonhaugwitz.com>)
+ Also brightd will now attempt to connect to an open X-server
+ before waiting for one to appear
+
+* brightd-0.4_beta2 (07. July 2007)
+
+07. Jul 2007; Phillip Berndt brightd.c:
+ Fading must not be that fast as the kernel's backend seems
+ to be too slow
+
+* brightd-0.4_beta1 (06. July 2007)
+
+06. July 2007; Phillip Berndt brightd.c:
+ Rewrote nearly the entire code to implement the
+ new exterimental stuff. This code should raise
+ nearly no cpu wakeups anymore
+ 
+ Since this is a big change, I'll release this
+ as 0.4_beta1 and skip 0.3.
+
+05. July 2007; Phillip Berndt brightd.c:
+ Switched to an experimental branch:
+  The code will now use /dev/input/event* to
+  check for user activity
+
+05. May 2007; Phillip Berndt brightd.c:
+ Added a -x parameter which will cause brightd
+ to wait for an X11-session to be opened if it
+ does not find one.
+
+29. Apr 2007; Phillip Berndt brightd.c:
+ Fixed some typos
+
+28. Apr 2007; Phillip Berndt brightd.c:
+ Fixed a minor bug which produced a warning when
+ compiling with -Wall
+
+28. Apr 2008; Phillip Berndt Makefile:
+ brightd will now be built with debugging information
+ by default and will use any $CFLAGS specified in the
+ environment
+
+*brightd-0.2 (26. Apr 2007)
+
+26. Apr 2007; Phillip Berndt brightd.c:
+ The default class is no longer "ibm" but the first
+ directory entry in the backlight directory
+ Since 2.6.22 will rename the "ibm" class, I'll
+ release this as 0.2 now.
+
+26. Apr 2007; Phillip Berndt brightd.1:
+ Replaced 1000 µs with 1 ms to prevent encoding
+ problems on non-unicode systems
+
+*brightd-0.1 (15. Apr 2007)
+
+15. Apr 2007; Phillip Berndt brightd.c:
+ brightd does use the sys-Interface now.
+ (Thanks to Evgeni Golov <sargentd at die-welt dot net> for reporting)
+ Added a manpage
+
+26 Feb 2007; Phillip Berndt brightd.c:
+ Fixed a typo
+ Added #include <string.h> to remove a warning
+ (Thanks to Thomas Ohms for reporting.)
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8386862
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,38 @@
+PREFIX=$(DESTDIR)/usr
+BINDIR=bin/
+#NO_X11=1  # (Uncomment this to disable X11 Support)
+
+PACKAGE_VERSION=`awk '/RELEASE/ {print $$3}' brightd.c | tr -d \" | head -n1`
+
+CFLAGS=-g -Wall -pedantic
+MAN_NO_X11=1
+ifndef NO_X11
+MAN_NO_X11=0
+A_CFLAGS=-lX11 -lXss -DX11
+endif
+
+all: brightd brightd.1
+
+brightd: brightd.c
+	gcc $(CFLAGS) $(A_CFLAGS) -o $@ $@.c
+
+brightd.1:
+	sed -re 's/^\.nr no_x11 [01]/.nr no_x11 $(MAN_NO_X11)/' brightd.1.tpl > brightd.1
+
+install:
+	install -Ds brightd $(PREFIX)/$(BINDIR)/brightd
+	install -D brightd.1 $(PREFIX)/share/man/man1/brightd.1
+
+uninstall:
+	rm $(PREFIX)/$(BINDIR)/brightd
+	rm $(PREFIX)/share/man/man1/brightd.1
+
+clean:
+	rm -f brightd brightd.1
+
+# Source tarball generation
+source:
+	mkdir brightd-$(PACKAGE_VERSION)/
+	cp brightd.{1.tpl,c} ChangeLog gpl.txt Makefile README brightd-$(PACKAGE_VERSION)/
+	tar cjf brightd-$(PACKAGE_VERSION).tar.bz2 brightd-$(PACKAGE_VERSION)/
+	rm -rf brightd-$(PACKAGE_VERSION)/
diff --git a/README b/README
new file mode 100644
index 0000000..d5d0460
--- /dev/null
+++ b/README
@@ -0,0 +1,107 @@
+BRIGHTNESS CONTROL DAEMON
+----------------------------------------------------------------
+
+CHANGES IN 0.4
+	Brightd 0.4 introduces some major changes, so I'll write some
+	information on the new system here.
+
+	d-tick <jid:d-tick@jabber.zankt.net> noticed that the old code
+	caused a huge number of CPU wakeups per second. While this makes
+	the fading and reaction look quite cool, it's something quite#
+	underisable for battery live time.
+
+	Starting with this version of brightd the program calculates idle
+	times based on input on /dev/input/event* using select(2) and
+	alarm(2). xscreensaver times are honored furthermore, but not
+	pulled every few ms. Also, the brightness setting doesn't get
+	pulled anymore, which means you'll have to tell your acpid script
+	to notify brightd of any changes to the brightness. To achieve
+	this, brightd creates a FIFO into which you may echo the new
+	brightness setting.
+
+	In my case (Thinkpad R51) the lines I had to put into
+	/etc/acpi/default.sh were
+	  
+	  if [ "${ACTION}" == "brightness" ]; then
+		  echo -n "0$[${PARAMETER} / 14]" > /var/tmp/.brightd
+	  fi
+
+	(acpid reported the brightness in a range between 0 and 100 while
+	 brightd expects to get the levels from sysfs, who are between 0 and
+	 7)
+
+	Also note that you'll have to start brightd as root now, because
+	other users don't have read permission on /dev/input/event*.
+	Brightd will wait for X11 per default now, but you may deactivate
+	the whole X11 interaction using -x now.
+
+	"But don't you worry" - it will drop it's privileges as soon as it
+	has opened all necessary files. If you drop privileges to a user
+	also having read access to /dev/input, brightd will automatically
+	open new files in that directory upon creation (pe when you attach
+	an USB mouse)
+
+PREREQUISITES
+	A recent kernel with an extension providing access to your LCD's
+	brightness controls through /sys/class/backlight.
+	The kernel must have CONFIG_INPUT_EVDEV enabled (which is default)
+
+	For example, IBM thinkpad owners should have CONFIG_IBM_ACPI set.
+
+	Additionally, users should have write permissions:
+		chmod g+w /sys/class/backlight/*/brightness
+		chgrp users /sys/class/backlight/*/brightness
+	You might have to put this in your init.d or so
+
+COMPILING
+	If compiled with x11 support brightd needs X11 and the
+	X11 screensaver extensions (libXss) installed.
+
+	Simply change into the source directory and type "make" to
+	compile it. The output executable will be called "brightd".
+
+INSTALLATION
+	Copy brightd to some directory inside your $PATH (like
+	/usr/local/bin). Put it into an init script and enjoy.
+
+USAGE
+	See the manpage.
+
+Q&A
+  
+  BRIGHTD STARTS, BUT DOES NOT WORK
+	brightd will not work in three situations. If you intend to test
+	it, avoid those:
+		- brightd won't do anything when xscreensaver is
+		  deaktivated. (This prevents the screen to go dark when
+		  you're watching a movie)
+		- It won't do anything when AC is plugged in.
+		- It won't do anything either when the highest brightness
+		  level is chosen.
+	Use "-f" to override the latter two.
+
+  BRIGHTD STARTS, BUT DOES NOT CONNECT TO X11
+	Make sure your auth settings allow clients started on the same
+	machine by root to connect to X11. For gdm users, starting brightd
+	with
+	 XAUTHORITY="/var/gdm/:0.Xauth" brightd ...
+	might help.
+
+  MY SYNAPTICS TOUCHPAD ISN'T RECOGNIZED
+	Sadly, synaptics does not create a device in /dev/input; if you
+	want to have events from your touchpad considered, use brightd < 0.3.
+
+LICENSE
+	GPL, of course. See gpl.txt
+
+AUTHOR
+	Phillip Berndt
+	www.pberndt.com
+
+	Please excuse any language mistakes. I'm no native english
+	speaker ;)
+
+CONTRIBUTORS
+	Richard Weinberger <richard at nod dot at>
+	Hannes von Haugwitz <hannes at vonhaugwitz dot com>	
+
diff --git a/brightd.1.tpl b/brightd.1.tpl
new file mode 100644
index 0000000..9101f86
--- /dev/null
+++ b/brightd.1.tpl
@@ -0,0 +1,100 @@
+.\" brightd manpage
+.\" vim:fileencoding=latin-1
+.nr no_x11 0
+.nr version_maj 0
+.nr version_min 4
+.nr version_sub 1
+
+.TH brightd 1 "18 October 2008" "\n[version_maj].\n[version_min].\n[version_sub]" "brightd manual"
+.SH NAME
+brightd \- a brightness control daemon
+.SH SYNOPSIS
+
+.ie (\n[no_x11] == 0) \{
+.B brightd [-v] [-d] [-P <file>] [-u n] [-e n] [-w n] [-b s] [-f] [-c n] [-x] [-r n]
+.\}
+.el \{
+.B brightd [-v] [-d] [-P <file>] [-u n] [-e n] [-w n] [-b s] [-f] [-c n] [-r n]
+.\}
+
+.SH DESCRIPTION
+.I brightd
+is a daemon which dynamically reduces LCD brightness when you don't use your pc. The idea is adapted from iBooks.
+.SH OPTIONS
+.TP
+-v
+Output some debugging information. Will not work
+in daemon mode.
+.TP
+-d
+Will cause brightd to fork itself into background.
+You'll want to use this ;)
+.TP
+-P <file>
+Set location of pid file in daemon mode (Default is /var/run/brightd.pid).
+.TP
+-u n
+brightd will drop privileges after opening all file descriptors. With this
+setting you may choose which user to change to.
+
+You
+.B have
+.ie (\n[no_x11] == 0) \{\
+to start brightd as root; or at least as a user which might as well access
+X11-Sessions and
+.\}
+.el \{\
+to start brightd as root; or at least as a user which might access
+.\}
+.I /dev/input/event
+.TP
+-e n
+Filter used event sources by POSIX extended regexp n (for example, use
+"i8042.+event" on intel platforms to avoid having HDAPS taken into account)
+You should include "event" here, but you must not do so.
+.TP
+-w n
+The amount of seconds of inactivity to wait before
+reducing brightness
+.TP
+-b n
+Dark screen brightness
+Never reduce brightness below that value.
+Note that you won't be able to change brightness
+manually below this value as well.
+.TP
+-f
+Reduce brightness even if on the highest brightness
+level.
+By default, brightd won't do this. That way you can
+temporally disable it while reading through a text or
+so.
+If you specify this option twice, brightd will also
+reduce brightness when you're on AC.
+.TP
+-c s
+Set the backlight class to use. You may specify any subdirectoy of
+.I /sys/class/backlight
+.if (\n[no_x11] == 0) \{ .TP
+-x
+Don't query X11 for inactivity / deactivated screensavers
+.\}
+.TP
+-r n
+brightd will create a FIFO n (deleting the file if it existed before!) and read
+from it. If you tell your acpid to write brightness levels to that FIFO when
+the user changes brightness, brightd can help you with some stuff: For example,
+if brightd faded to brightness 0 and you increase brightness, brightd would
+automatically fade up to the highest level.
+
+.SH FILES
+.P 
+.I /usr/bin/brightd
+.I /sys/class/backlight/*/*
+
+.SH AUTHORS
+.nf
+Phillip Berndt (mail at pberndt dot com)
+Richard Weinberger (richard at nod dot at)
+Hannes von Haugwitz (hannes at vonhaugwitz dot com)
+.fi
diff --git a/brightd.c b/brightd.c
new file mode 100644
index 0000000..244dd60
--- /dev/null
+++ b/brightd.c
@@ -0,0 +1,806 @@
+/**
+ * Brightness control daemon
+ * Copyright (c) 2006-2008, Phillip Berndt
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Compile using:
+ *  gcc -lX11 -lXss -DX11 brightd.c or
+ *  gcc brightd.c		    or
+ *  use make
+ *
+ */
+#define RELEASE "0.4.1"
+/* #define DEBUG */
+/* #define X11 */
+
+/* Includes {{{ */
+#include <unistd.h>
+#include <signal.h>
+#include <string.h>
+#ifdef X11
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/extensions/scrnsaver.h>
+#endif
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <glob.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/select.h>
+#include <pthread.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <time.h>
+#include <regex.h>
+#include <sys/inotify.h>
+/* }}} */
+
+/* Overall program settings {{{ */
+#ifdef DEBUG
+	char verbose = 1;
+#else
+	char verbose = 0;
+#endif
+char daemonize	 = 0;
+char force	 = 0;
+int  waitSeconds = 3;
+int  darkBright  = 0;
+int  maxBright	 = 0;
+
+char isDark	 = 0;
+char savedLevel  = 0;
+char beforeFade  = 0;
+
+char pidfile[255];
+
+time_t lastFade  = 0;
+
+char b_class[21];
+char actualBrightnessFile[255];
+char brightnessFile[255];
+
+char b_fifo[255];
+int  bfifoFd	       = 0;
+
+FILE *brightnessFd;
+
+regex_t eventSourceFilter;
+
+#ifdef X11
+Display *display = NULL;
+#endif
+
+/* Required prototypes */
+void signalHandlerAlarm(int sig);
+/* }}} */
+
+
+/*
+ * Write an error to stderr and exit
+ */
+void error(char *str) { /* {{{ */
+	if(daemonize != 1) {
+		fputs(str, stderr);
+		fputs("\n", stderr);
+
+		#ifdef DEBUG
+		#include <errno.h>
+		printf("libc says: %s\n", strerror(errno));
+		#endif
+	}
+
+	#ifdef X11
+		/* Close display */
+		if(display) {
+			XCloseDisplay(display);
+		}
+	#endif
+
+	/* Quit */
+	exit(1);
+} /* }}} */
+
+/*
+ * Write an debug message to the console
+ */
+inline void info(char *str) { /*{{{*/
+	if(verbose == 1 && daemonize == 0) {
+		printf("%s\n", str);
+	}
+} /*}}}*/
+
+/*
+ * Function to get the brightness of the pc
+ */
+int getBrightness() { /*{{{*/
+	char line[255];
+	int retVal;
+	FILE *brightness = fopen(actualBrightnessFile, "r");
+	if(!brightness) {
+		error("Failed to open /sys/class/backlight/*/actual_brightness. Do you have the "
+			"ACPI extensions for the class supplied using -c in your kernel?");
+	}
+	fgets(line, 255, brightness);
+	retVal = atoi(line);
+	fclose(brightness);
+
+	return retVal;
+} /*}}}*/
+
+/*
+ * Function to set the brightness of the
+ * display
+ * 
+ * Must be done stepwise!
+ */
+void setBrightness(int level) { /*{{{*/
+	char output[255];
+	int i, plevel;
+	int saved;
+
+	saved = alarm(0);
+	signal(SIGALRM, SIG_IGN);
+	lastFade = time(NULL);
+	plevel = getBrightness();
+	for(i=plevel; ; i += (plevel<level ? 1 : -1)) {
+		sprintf(output, "%i\n", i);
+		if(fputs(output, brightnessFd) == EOF) {
+			error("Failed to update brightness.");
+		}
+		fflush(brightnessFd);
+
+		if(i == level) {
+			break;
+		}
+
+		/* We had to disable signal handler and alarm because of this: */
+		usleep(200);
+	}
+	signal(SIGALRM, signalHandlerAlarm);
+	alarm(saved);
+} /*}}}*/
+
+/*
+ * Check whether the PC is on AC
+ */
+int isOnAC() /*{{{*/
+{
+	char line[255];
+	FILE *ac = fopen("/proc/acpi/ac_adapter/AC/state", "r");
+	if(!ac) {
+		/* Ignore this */
+		return 0;
+	}
+	fgets(line, 255, ac);
+	fclose(ac);
+
+	return strstr(line, "on-line") != NULL;
+} /*}}}*/
+
+/*
+ * Signal handler; just quit
+ */
+void signalHandlerQuit(int signal) { /*{{{*/
+	#ifdef X11
+	if(display != NULL) {
+		info("Closing display");
+		XCloseDisplay(display);
+	}
+	#endif
+	if(bfifoFd != 0) {
+		/* This may or may not work */
+		close(bfifoFd);
+		if(unlink(b_fifo) != 0) {
+			info("Failed to remove FIFO - this does only work when you didn't drop privileges");
+		}
+	}
+	error("Received signal. Exiting...");
+} /*}}}*/
+
+#ifdef X11
+/*
+ * Get IDLE time
+ * Taken from GAJIM source, src/common/idle.c
+ *
+ * Modified to return -1 when the screen saver is deactivated
+ */
+int getIdleTime() { /*{{{*/
+	static XScreenSaverInfo *mit_info = NULL;
+	int idle_time, event_base, error_base;
+
+	if (XScreenSaverQueryExtension(display, &event_base, &error_base)) {
+		if (mit_info == NULL) {
+			mit_info = XScreenSaverAllocInfo();
+		}
+		XScreenSaverQueryInfo(display, RootWindow(display, 0), mit_info);
+
+		if(mit_info->state == 3) { /* ScreenSaverDisabled */
+			idle_time = -1;
+		}
+		else {
+			idle_time = (mit_info->idle) / 1000;
+		}
+	}
+	else {
+		idle_time = 0;
+	}
+	return idle_time;
+} /*}}}*/
+#endif
+
+/*
+ * Print a help message and exit
+ */
+void printHelp() /*{{{*/
+{
+	#ifdef X11
+	printf("brightd %s\nA X11-daemon for iBook-like brightness management\nCopyright (c) 2006-2008, Phillip Berndt\n\nOptions:\n", RELEASE);
+	#else
+	printf("brightd %s\nA daemon for iBook-like brightness management\nCopyright (c) 2006-2008, Phillip Berndt\n\nOptions:\n", RELEASE);
+	#endif
+	printf(" -v	   Be verbose\n");
+	printf(" -d	   Daemonize\n");
+	printf(" -P <file> Create pid file\n");
+	printf(" -u n	   Drop privileges to this user (Defaults to nobody)\n");
+	printf(" -w n	   Wait n seconds before reducing brightness (Defaults to 3)\n");
+	printf(" -b n	   The brightness setting for the dark screen (Defaults zu 0)\n");
+	printf(" -f	   Reduce brightness even if on the highest brightness level\n");
+	printf("	   Specify twice to also do so when on AC\n");
+	printf(" -e n	   Filter event sources using regexp n (on /dev/input/by-path\n");
+	printf(" -c n	   Set the backlight class to use (defaults to the first\n");
+	printf("	   subnode of /sys/class/backlight)\n");
+	#ifdef X11
+	printf(" -x	   Don't query X11 Xss extension\n");
+	#endif
+	printf(" -r n	   Create a FIFO, into which acpid may write the new level when the user\n");
+	printf("	   changed display brightness\n");
+	printf("\n");
+	exit(0);
+} /*}}}*/
+
+/*
+ * Load default brightness class into b_class
+ */
+void loadDefaultClass() /*{{{*/
+{
+	struct dirent *dirEntry;
+	DIR *backlightDir = opendir("/sys/class/backlight");
+	if(backlightDir) {
+		while(1) {
+			dirEntry = readdir(backlightDir);
+			if(!dirEntry) {
+				break;
+			}
+			if(dirEntry->d_name[0] == '.') {
+				continue;
+			}
+			strcpy(b_class, dirEntry->d_name);
+			if(verbose == 1) {
+				printf("Using brightness class %s\n", b_class);
+			}
+			closedir(backlightDir);
+			return;
+		}
+		closedir(backlightDir);
+	}
+	strcpy(b_class, "none");
+} /*}}}*/
+
+/*
+ * Event source filter
+ */
+inline char isEventFileValid(char *file) { /* {{{ */
+	if(*((char*)&eventSourceFilter) == 0) {
+		return 1;
+	}
+	else {
+		return regexec(&eventSourceFilter, file, 0, NULL, 0) == 0;
+	}
+} /* }}} */
+
+/**
+ * Application logic code {{{
+ */
+void signalHandlerAlarm(int sig) { /*{{{*/
+	/* Reenable the handler */
+	signal(sig, signalHandlerAlarm);
+
+	if(isDark == 0) {
+		/* Check if fading is okay */
+		if(isOnAC() && force < 2) {
+			info("Would fade, but on AC");
+			alarm(waitSeconds);
+			return;
+		}
+		if(getBrightness() == maxBright && force < 1) {
+			info("Would fade, but maximum brightness level selected");
+			alarm(waitSeconds);
+			return;
+		}
+	#ifdef X11
+		if(display != NULL && getIdleTime() < waitSeconds) {
+			info("Would fade, but screensaver denies to do so");
+			alarm(waitSeconds);
+			return;
+		}
+	#endif
+
+		/* Fade */
+		info("Fading to dark");
+		beforeFade = getBrightness();
+		savedLevel = darkBright;
+		setBrightness(darkBright);
+		isDark = 1;
+	}
+	return;
+} /*}}}*/
+
+void handleReceivedEvent() { /*{{{*/
+	int level;
+
+	/* Reset alarm */
+	alarm(waitSeconds);
+
+	/* Fade back to light */
+	if(isDark == 1) {
+		level = getBrightness();
+		if(level > beforeFade) {
+			savedLevel = level;
+			isDark = 0;
+			return;
+		}
+		if(verbose == 1 && daemonize == 0) {
+			printf("Fading to light (level %d)\n", beforeFade);
+		}
+		savedLevel = beforeFade;
+		setBrightness(beforeFade);
+		isDark = 0;
+	}
+} /*}}}*/
+
+void userChangedBrightness(int toLevel) { /*{{{*/
+	if(verbose == 1 && daemonize == 0) {
+		printf("User changed brightness level to %d\n", toLevel);
+	}
+
+	/* Reset alarm */
+	alarm(waitSeconds);
+
+	if(isDark == 1 && toLevel > darkBright) {
+		/* Fade to max immediately */
+		info("Maximum lightness, because user increased brightness");
+		setBrightness(maxBright);
+		savedLevel = maxBright;
+		isDark = 0;
+	}
+	if(toLevel < darkBright) {
+		/* Deny this */
+		info("Sorry, you can't lower brightness below darkBright");
+		setBrightness(darkBright);
+		savedLevel = darkBright;
+	}
+	savedLevel = toLevel;
+} /*}}}*/
+
+/* }}} */
+
+/*
+ * Make pid file.
+ */
+void make_pidfile(char *pidfile) {
+	FILE *fpidfile;
+	if (pidfile && (fpidfile = fopen(pidfile, "w"))) {
+		fprintf(fpidfile, "%d\n", getpid());
+		fclose(fpidfile);
+	}
+}
+
+/*
+ * The main program
+ */
+int main(int argc, char *argv[]) { /*{{{*/
+	int  defaultBrightness = 0;
+	int  oldBrightness     = 0;
+	int  newBrightness     = 0;
+	int  highFd	       = 0;
+	#ifdef X11
+		int  noXCode	       = 0;
+		int  inotifyFdX11;
+	#endif
+	int  eventReceived;
+	int  inotifyFdEvents;
+	int  i;
+	int  fd;
+	int  filesCount;
+	char option;
+	char user[25];
+	char buf[255];
+	char buf2[255];
+	struct passwd *userStruct;
+	glob_t *events;
+	fd_set rfds;
+	fd_set openfds;
+	struct inotify_event *inotifyEvent;
+
+	#ifdef DEBUG
+		printf("DEBUG BUILD\n");
+	#endif
+
+	/* Load settings {{{ */
+	strcpy(user, "nobody");
+	*pidfile = 0;
+	
+	loadDefaultClass();
+	opterr = 0;
+
+	regcomp(&eventSourceFilter, ".*event.*", REG_EXTENDED | REG_NOSUB);
+	#ifdef X11
+	while((option = getopt(argc, argv, "vdfxe:w:P:b:c:r:u:")) > 0) {
+	#else
+	while((option = getopt(argc, argv, "vdfe:w:P:b:c:r:u:")) > 0) {
+	#endif
+		switch(option) {
+			case 'v': /* Verbose */
+				verbose = 1;
+				break;
+			case 'w': /* Wait n seconds before fading */
+				waitSeconds = atoi(optarg);
+				if(waitSeconds <= 0) {
+					printHelp();
+				}
+				break;
+			case 'd': /* Daemonize */
+				daemonize = 1;
+				break;
+			case 'P': /* Location of pid file */
+				if(strlen(optarg) > 250) {
+					error("The filename should not be longer than 250 characters.");
+				}
+				strcpy(pidfile, optarg);
+				break;
+			case 'e': /* Event source filter */
+				/* Compile regex */
+				i = regcomp(&eventSourceFilter, optarg, REG_EXTENDED | REG_NOSUB);
+				if(i != 0) {
+					regerror(i, &eventSourceFilter, buf, 255);
+					printf("Error: %s\n", buf);
+					error("Regex compilation failed");
+				}
+				break;
+			case 'b': /* Darkest setting */
+				darkBright = atoi(optarg);
+				if(darkBright < 0 || darkBright > 5) {
+					printHelp();
+				}
+				break;
+			case 'f': /* Force fading */
+				force++;
+				break;
+			case 'u': /* User */
+				if(strlen(optarg) > 20) {
+					error("The user name should not be longer than 20 characters.");
+				}
+				strcpy(user, optarg);
+				break;
+			case 'c': /* Brightness class */
+				if(strlen(optarg) > 20) {
+					error("The class should not be longer than 20 characters.");
+				}
+				strcpy(b_class, optarg);
+				break;
+			#ifdef X11
+			case 'x': /* Deactivate X-Code */
+				noXCode = 1;
+				break;
+			#endif
+			case 'r': /* Brightness FIFO */
+				if(strlen(optarg) > 250) {
+					error("The filename should not be longer than 250 characters.");
+				}
+				strcpy(b_fifo, optarg);
+				bfifoFd = 1;
+				break;
+			default:
+				printHelp();
+		}
+	}
+	
+	
+	/* }}} */
+
+	/* Load some sysfs and default settings stuff {{{ */
+	/* Get the user ID */
+	userStruct = getpwnam(user);
+	if(userStruct == NULL) {
+		error("Failed to get the UID for the specified user");
+	}
+
+	/* Set files in sysfs to use */
+	sprintf(brightnessFile, "/sys/class/backlight/%s/brightness", b_class);
+	brightnessFd = fopen(brightnessFile, "w");
+	if(!brightnessFd) {
+		printf("Failed to open %s for writing.\n", brightnessFile);
+		error(	"- Do you have the correct ACPI extensions in your kernel?\n"
+			"- Do you have permissions to write to that file?");
+	}
+
+	/* Load maximum brightness; abuse some not yet initialised variables to do so ;) */
+	sprintf(actualBrightnessFile, "/sys/class/backlight/%s/max_brightness", b_class);
+	maxBright = getBrightness();
+	if(verbose == 1 && daemonize == 0) {
+		printf("Maximum brightness is %d\n", maxBright);
+	}
+	sprintf(actualBrightnessFile, "/sys/class/backlight/%s/actual_brightness", b_class);
+
+	/* Load brightness */
+	defaultBrightness = newBrightness = oldBrightness = getBrightness();
+
+	/* Open all event files */
+	FD_ZERO(&openfds);
+	events = (glob_t *)malloc(sizeof(glob_t));
+	if(glob("/dev/input/by-path/*", 0, NULL, events) != 0) {
+		printf("Failed to list event devices in /dev/input/by-path/\n");
+		exit(1);
+	}
+	filesCount = events->gl_pathc;
+	for(i=0; i<filesCount; i++) {
+		if(!isEventFileValid(events->gl_pathv[i])) {
+			continue;
+		}
+		fd = open(events->gl_pathv[i], O_RDONLY | O_NONBLOCK);
+		#ifdef DEBUG
+		printf("%d: %s\n", fd, events->gl_pathv[i]);
+		#endif
+
+		if(fd == -1) {
+			printf("Failed to open %s\n", events->gl_pathv[i]);
+			error("You have to be root to run this");
+		}
+		if(fd > highFd) {
+			highFd = fd;
+		}
+		FD_SET(fd, &openfds);
+	}
+	globfree(events);
+
+	/* Create inotify mapping for that directory */
+	inotifyFdEvents = inotify_init();
+	if(inotifyFdEvents != -1) {
+		if(inotify_add_watch(inotifyFdEvents, "/dev/input/by-path/", IN_CREATE) == -1) {
+			close(inotifyFdEvents);
+			inotifyFdEvents = -1;
+		}
+		if(inotifyFdEvents > highFd) {
+			highFd = inotifyFdEvents;
+		}
+	}
+
+	/* Open FIFO */
+	if(bfifoFd == 1) {
+		info("Creating and opening FIFO");
+		unlink(b_fifo);
+		if(mkfifo(b_fifo, 0777) != 0) {
+			error("Failed to create FIFO");
+		}
+		bfifoFd = open(b_fifo, O_RDONLY | O_NONBLOCK);
+		#ifdef DEBUG
+			printf("%d: Fifo\n", bfifoFd);
+		#endif
+		if(bfifoFd == -1) {
+			error("Failed to open FIFO for reading");
+		}
+		if(bfifoFd > highFd) {
+			highFd = bfifoFd;
+		}
+	}
+	/* }}} */
+
+	/* Signal handlers, daemonize and X-Server opening {{{ */
+	/* Create signal handler for closing the display */
+	signal(SIGINT,	signalHandlerQuit);
+	signal(SIGHUP,	signalHandlerQuit);
+	signal(SIGALRM, signalHandlerAlarm);
+
+
+	/* Daemonize */
+	#ifndef DEBUG
+	if(daemonize == 1) {
+		daemon(0, 0);
+	}
+	#endif
+
+	/* Create PID file */
+	if(*pidfile)
+		make_pidfile(pidfile);
+
+	#ifdef X11
+	/* Wait for an X-Server to appear */
+	if(noXCode == 0) {
+		inotifyFdX11 = inotify_init();
+		if(inotifyFdX11 != -1) {
+			if(inotify_add_watch(inotifyFdX11, "/tmp/.X11-unix/", IN_CREATE) == -1) {
+				close(inotifyFdX11);
+				inotifyFdX11 = -1;
+			}
+		}
+		while(1) {
+			/* Try opening $DISPLAY first */
+			if((display = XOpenDisplay(NULL)) != NULL) {
+				info("Opened X11 Display from ENV{DISPLAY}");
+			}
+			else {
+				/* Failed to open $DISPLAY - wait for X11 to appear */
+				if(inotifyFdX11 != -1) {
+					info("Waiting for an X-Server to appear(!)");
+
+					read(inotifyFdX11, buf, sizeof(struct inotify_event) * 2);
+					inotifyEvent = (struct inotify_event *)buf;
+					strncpy(buf, inotifyEvent->name, 3);
+					buf[0] = ':';
+					buf[2] = 0;
+					if(verbose == 1 && daemonize == 0) {
+						printf("Found X-Server '%s'; I will try to open a connection to it every 5 seconds\n", buf);
+					}
+				}
+				else
+				{
+					info("inotify on /tmp/.X11-unix failed - polling for ':0'");
+					strcpy(buf, ":0");
+				}
+
+				display = XOpenDisplay(buf);
+				while(display == NULL) {
+					sleep(5);
+					display = XOpenDisplay(buf);
+				}
+			}
+
+			info("Opened a connection");
+			if(fork() == 0) {
+				break;
+			}
+			waitpid(0, NULL, 0);
+			info("Connection lost.");
+			sleep(5);
+		}
+	}
+	#endif
+
+	/* Drop privileges */
+	setegid(userStruct->pw_gid);
+	setgid(userStruct->pw_gid);
+	seteuid(userStruct->pw_uid);
+	setuid(userStruct->pw_uid);
+	/* }}} */
+
+	/* Wait for input */
+	alarm(waitSeconds);
+	while(1) {
+		eventReceived = 0;
+		rfds = openfds;
+
+		/* Add inotify and FIFO to watch list */
+		if(inotifyFdEvents != 0) {
+			FD_SET(inotifyFdEvents, &rfds);
+		}
+		if(bfifoFd != 0) {
+			FD_SET(bfifoFd, &rfds);
+		}
+
+		/* Select filepointers */
+		while(select(highFd + 1, &rfds, NULL, NULL, NULL) == -1) {
+			#ifdef DEBUG
+			info("DEBUG: Select failed.");
+			#endif
+		}
+
+		/* Check for event fd */
+		for(fd=0; fd<sizeof(fd_set) * 8; fd++) {
+			if(FD_ISSET(fd, &openfds) && FD_ISSET(fd, &rfds)) {
+				#ifdef DEBUG
+				printf("DEBUG: fd %d fired\n", fd);
+				#endif
+
+				if(read(fd, buf, 250) == -1) {
+					#ifdef DEBUG
+					printf("DEBUG: fd %d closed\n", fd);
+					#endif
+					close(fd);
+					FD_CLR(fd, &openfds);
+					if(fd == highFd) {
+						i = fd;
+						while(i > 0 && (!FD_ISSET(--i, &openfds)) && (i != bfifoFd));
+						highFd = i + 1;
+					}
+				}
+				else {
+					eventReceived = 1;
+				}
+			}
+		}
+		
+		/* Event received */
+		if(eventReceived) {
+			handleReceivedEvent();
+		}
+
+		/* FIFO action */
+		if(bfifoFd != 0 && FD_ISSET(bfifoFd, &rfds)) {
+			memset(buf, 0, 5);
+			if(read(bfifoFd, buf, 2) != -1) {
+				if(strlen(buf) > 0) {
+					#ifdef DEBUG
+					printf("Fifo said: %s\n", buf);
+					#endif
+					i = atoi(buf);
+					if(savedLevel != i && lastFade + 1 < time(NULL)) {
+						userChangedBrightness(i);
+					}
+				}
+				else {
+					/* Reopen FIFO */
+					close(bfifoFd);
+					bfifoFd = open(b_fifo, O_RDONLY | O_NONBLOCK);
+					#ifdef DEBUG
+						info("Reopening FIFO");
+					#endif
+					if(bfifoFd == -1) {
+						error("Failed to open FIFO for reading");
+					}
+					if(bfifoFd > highFd) {
+						highFd = bfifoFd;
+					}
+				}
+			}
+		}
+
+		/* Inotify on /dev/input */
+		if(inotifyFdEvents != -1 && FD_ISSET(inotifyFdEvents, &rfds)) {
+			memset(buf, 0, sizeof(struct inotify_event) + 51);
+			read(inotifyFdEvents, buf, sizeof(struct inotify_event) + 50);
+			inotifyEvent = (struct inotify_event *)buf;
+			if(inotifyEvent->len > 0 && strstr(inotifyEvent->name, "event") != NULL) {
+				sprintf(buf2, "/dev/input/by-path/%s", inotifyEvent->name);
+				if(!isEventFileValid(buf2)) {
+					continue;
+				}
+				fd = open(buf2, O_RDONLY | O_NONBLOCK);
+				#ifdef DEBUG
+				printf("%d: %s\n", fd, buf2);
+				#endif
+				if(fd == -1) {
+					if(verbose == 1 && daemonize == 0) {
+						printf("Failed to open %s\n", buf2);
+					}
+				}
+				else {
+					if(fd > highFd) {
+						highFd = fd;
+					}
+					FD_SET(fd, &openfds);
+				}
+			}
+		}
+	}
+} /*}}}*/
+
+/* vim:ft=c:fileencoding=iso-8859-1:foldmethod=marker:noexpandtab
+ **/
diff --git a/gpl.txt b/gpl.txt
new file mode 100644
index 0000000..d511905
--- /dev/null
+++ b/gpl.txt
@@ -0,0 +1,339 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.