From 98e2fef63d2e6dbda63929867db70bee1f8b55f5 Mon Sep 17 00:00:00 2001
From: Anselm R Garbe <garbeam@gmail.com>
Date: Fri, 22 Feb 2008 10:13:12 +0000
Subject: applied two patches, BSD_AUTH patch and Gottox' DPMS support patch

---
 LICENSE   |  2 +-
 config.mk | 11 ++++++++---
 slock.c   | 34 ++++++++++++++++++++++++++++++----
 3 files changed, 39 insertions(+), 8 deletions(-)

diff --git a/LICENSE b/LICENSE
index 9425c10..490492c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT/X Consortium License
 
-© 2006-2007 Anselm R. Garbe <garbeam at gmail dot com>
+© 2006-2008 Anselm R Garbe <garbeam at gmail dot com>
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),
diff --git a/config.mk b/config.mk
index 345475c..d17c762 100644
--- a/config.mk
+++ b/config.mk
@@ -11,17 +11,22 @@ X11LIB = /usr/X11R6/lib
 
 # includes and libs
 INCS = -I. -I/usr/include -I${X11INC}
-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11
+LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext
 
 # flags
-CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\" -DHAVE_SHADOW_H
+CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\"  -DHAVE_SHADOW_H
 LDFLAGS = ${LIBS}
 #CFLAGS = -g -Wall -O2 ${INCS} -DVERSION=\"${VERSION}\" -DHAVE_SHADOW_H
 #LDFLAGS = -g ${LIBS}
 
-# On *BSD remove -DHAVE_SHADOW_H from CFLAGS
+# On *BSD remove -DHAVE_SHADOW_H from CFLAGS and add -DHAVE_BSD_AUTH
 # On OpenBSD and Darwin remove -lcrypt from LIBS
 
 # compiler and linker
 CC = cc
 LD = ${CC}
+
+# Install mode. On BSD systems MODE=2755 and GROUP=auth
+# On others MODE=4755 and GROUP=root
+#MODE=2755
+#GROUP=auth
diff --git a/slock.c b/slock.c
index 4723102..2dc9648 100644
--- a/slock.c
+++ b/slock.c
@@ -1,4 +1,4 @@
-/* © 2006-2007 Anselm R. Garbe <garbeam at gmail dot com>
+/* © 2006-2008 Anselm R Garbe <garbeam at gmail dot com>
  * See LICENSE file for license details. */
 #define _XOPEN_SOURCE 500
 #if HAVE_SHADOW_H
@@ -16,6 +16,12 @@
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
+#include <X11/extensions/dpms.h>
+
+#if HAVE_BSD_AUTH
+#include <login_cap.h>
+#include <bsd_auth.h>
+#endif
 
 void
 eprint(const char *errstr, ...) {
@@ -27,6 +33,7 @@ eprint(const char *errstr, ...) {
 	exit(EXIT_FAILURE);
 }
 
+#ifndef HAVE_BSD_AUTH
 const char *
 get_password() { /* only run as root */
 	const char *rval;
@@ -46,18 +53,23 @@ get_password() { /* only run as root */
 		rval = sp->sp_pwdp;
 	}
 #endif
+
 	/* drop privileges */
 	if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0)
 		eprint("slock: cannot drop privileges\n");
 	return rval;
 }
+#endif
 
 int
 main(int argc, char **argv) {
 	char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
 	char buf[32], passwd[256];
 	int num, screen;
+
+#ifndef HAVE_BSD_AUTH
 	const char *pws;
+#endif
 	unsigned int len;
 	Bool running = True;
 	Cursor invisible;
@@ -70,10 +82,14 @@ main(int argc, char **argv) {
 	XSetWindowAttributes wa;
 
 	if((argc == 2) && !strcmp("-v", argv[1]))
-		eprint("slock-"VERSION", © 2006-2007 Anselm R. Garbe\n");
+		eprint("slock-"VERSION", © 2006-2008 Anselm R Garbe\n");
 	else if(argc != 1)
 		eprint("usage: slock [-v]\n");
+
+#ifndef HAVE_BSD_AUTH
 	pws = get_password();
+#endif
+
 	if(!(dpy = XOpenDisplay(0)))
 		eprint("slock: cannot open display\n");
 	screen = DefaultScreen(dpy);
@@ -109,7 +125,9 @@ main(int argc, char **argv) {
 	XSync(dpy, False);
 
 	/* main event loop */
-	while(running && !XNextEvent(dpy, &ev))
+	while(running && !XNextEvent(dpy, &ev)) {
+		if(len == 0) 
+			DPMSForceLevel(dpy, DPMSModeOff);
 		if(ev.type == KeyPress) {
 			buf[0] = 0;
 			num = XLookupString(&ev.xkey, buf, sizeof buf, &ksym, 0);
@@ -120,7 +138,14 @@ main(int argc, char **argv) {
 			switch(ksym) {
 			case XK_Return:
 				passwd[len] = 0;
-				if((running = strcmp(crypt(passwd, pws), pws)) != 0)
+
+#ifdef HAVE_BSD_AUTH
+				running = !auth_userokay(getlogin(), NULL, "auth-xlock", passwd);
+#else
+				running = strcmp(crypt(passwd, pws), pws);
+#endif
+
+				if (running != 0)
 					XBell(dpy, 100);
 				len = 0;
 				break;
@@ -139,6 +164,7 @@ main(int argc, char **argv) {
 				break;
 			}
 		}
+	}
 	XUngrabPointer(dpy, CurrentTime);
 	XFreePixmap(dpy, pmap);
 	XDestroyWindow(dpy, w);
-- 
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