--- /dev/null
+MIT/X Consortium License
+
+(C)opyright MMVI 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"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
--- /dev/null
+# slock - simple screen locker
+# (C)opyright MMVI Anselm R. Garbe
+
+include config.mk
+
+SRC = slock.c
+OBJ = ${SRC:.c=.o}
+
+all: options slock
+
+options:
+ @echo slock build options:
+ @echo "CFLAGS = ${CFLAGS}"
+ @echo "LDFLAGS = ${LDFLAGS}"
+ @echo "CC = ${CC}"
+ @echo "LD = ${LD}"
+
+.c.o:
+ @echo CC $<
+ @${CC} -c ${CFLAGS} $<
+
+${OBJ}: config.mk
+
+slock: ${OBJ}
+ @echo LD $@
+ @${LD} -o $@ ${OBJ} ${LDFLAGS}
+ @strip $@
+
+clean:
+ @echo cleaning
+ @rm -f slock ${OBJ} slock-${VERSION}.tar.gz
+
+dist: clean
+ @echo creating dist tarball
+ @mkdir -p slock-${VERSION}
+ @cp -R LICENSE Makefile README config.mk ${SRC} slock-${VERSION}
+ @tar -cf slock-${VERSION}.tar slock-${VERSION}
+ @gzip slock-${VERSION}.tar
+ @rm -rf slock-${VERSION}
+
+install: all
+ @echo installing executable file to ${DESTDIR}${PREFIX}/bin
+ @mkdir -p ${DESTDIR}${PREFIX}/bin
+ @cp -f slock ${DESTDIR}${PREFIX}/bin
+ @chmod 755 ${DESTDIR}${PREFIX}/bin/slock
+ @chmod u+s ${DESTDIR}${PREFIX}/bin/slock
+
+uninstall:
+ @echo removing executable file from ${DESTDIR}${PREFIX}/bin
+ @rm -f ${DESTDIR}${PREFIX}/bin/slock
+
+.PHONY: all options clean dist install uninstall
--- /dev/null
+slock - simple screen locker
+============================
+simple screen locker utility for X.
+
+
+Requirements
+------------
+In order to build slock you need the Xlib header files.
+
+
+Installation
+------------
+Edit config.mk to match your local setup (slock is installed into
+the /usr/local namespace by default).
+
+Afterwards enter the following command to build and install slock (if
+necessary as root):
+
+ make clean install
+
+
+Running slock
+-------------
+Simply invoke the 'slock' command.
--- /dev/null
+# slock version
+VERSION = 0.1
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = ${PREFIX}/share/man
+
+X11INC = /usr/X11R6/include
+X11LIB = /usr/X11R6/lib
+
+# includes and libs
+INCS = -I. -I/usr/include -I${X11INC}
+LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11
+
+# flags
+CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\"
+LDFLAGS = ${LIBS}
+#CFLAGS = -g -Wall -O2 ${INCS} -DVERSION=\"${VERSION}\"
+#LDFLAGS = -g ${LIBS}
+
+# compiler and linker
+CC = cc
+LD = ${CC}
--- /dev/null
+/* (C)opyright MMIV-MMV Anselm R. Garbe <garbeam at gmail dot com>
+ * See LICENSE file for license details.
+ */
+#define _XOPEN_SOURCE
+#include <shadow.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <X11/keysym.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+int
+main(int argc, char **argv) {
+ char buf[32], passwd[256];
+ int num, prev_nitem;
+ struct spwd *sp;
+ unsigned int i, len;
+ Bool running = True;
+ KeySym ksym;
+ Display *dpy;
+ XEvent ev;
+
+ if((argc > 1) && !strncmp(argv[1], "-v", 3)) {
+ fputs("slock-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
+ exit(EXIT_SUCCESS);
+ }
+ if(!(sp = getspnam(getenv("USER")))) {
+ fputs("slock: cannot retrieve password entry (make sure to suid slock)\n", stderr);
+ exit(EXIT_FAILURE);
+ }
+ endspent();
+ if(!(dpy = XOpenDisplay(0))) {
+ fputs("slock: cannot open display\n", stderr);
+ exit(EXIT_FAILURE);
+ }
+
+ /* init */
+ passwd[0] = 0;
+ while(XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
+ GrabModeAsync, CurrentTime) != GrabSuccess)
+ usleep(1000);
+
+ /* main event loop */
+ while(running && !XNextEvent(dpy, &ev))
+ if(ev.type == KeyPress) {
+ len = strlen(passwd);
+ buf[0] = 0;
+ num = XLookupString(&ev.xkey, buf, sizeof(buf), &ksym, 0);
+ if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
+ || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
+ || IsPrivateKeypadKey(ksym))
+ continue;
+ /* first check if a control mask is omitted */
+ if(ev.xkey.state & ControlMask) {
+ switch (ksym) {
+ case XK_h:
+ case XK_H: ksym = XK_BackSpace;
+ break;
+ case XK_u:
+ case XK_U: passwd[0] = 0;
+ continue;
+ }
+ }
+ switch(ksym) {
+ case XK_Return:
+ running = strncmp(crypt(passwd, sp->sp_pwdp), sp->sp_pwdp, sizeof(passwd));
+ passwd[0] = 0;
+ break;
+ case XK_Escape:
+ passwd[0] = 0;
+ break;
+ case XK_BackSpace:
+ if(len)
+ passwd[--len] = 0;
+ break;
+ default:
+ if(num && !iscntrl((int) buf[0])) {
+ buf[num] = 0;
+ if(len)
+ strncat(passwd, buf, sizeof(passwd));
+ else
+ strncpy(passwd, buf, sizeof(passwd));
+ }
+ break;
+ }
+ }
+ XCloseDisplay(dpy);
+ return 0;
+}
