initial commit
This commit is contained in:
arg@suckless.org
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MIT/X Consortium License
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(C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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# slock - simple screen locker
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# (C)opyright MMVI Anselm R. Garbe
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include config.mk
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SRC = slock.c
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OBJ = ${SRC:.c=.o}
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all: options slock
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options:
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@echo slock build options:
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@echo "CFLAGS = ${CFLAGS}"
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@echo "LDFLAGS = ${LDFLAGS}"
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@echo "CC = ${CC}"
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@echo "LD = ${LD}"
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.c.o:
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@echo CC $<
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@${CC} -c ${CFLAGS} $<
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${OBJ}: config.mk
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slock: ${OBJ}
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@echo LD $@
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@${LD} -o $@ ${OBJ} ${LDFLAGS}
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@strip $@
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clean:
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@echo cleaning
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@rm -f slock ${OBJ} slock-${VERSION}.tar.gz
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dist: clean
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@echo creating dist tarball
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@mkdir -p slock-${VERSION}
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@cp -R LICENSE Makefile README config.mk ${SRC} slock-${VERSION}
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@tar -cf slock-${VERSION}.tar slock-${VERSION}
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@gzip slock-${VERSION}.tar
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@rm -rf slock-${VERSION}
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install: all
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@echo installing executable file to ${DESTDIR}${PREFIX}/bin
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@mkdir -p ${DESTDIR}${PREFIX}/bin
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@cp -f slock ${DESTDIR}${PREFIX}/bin
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@chmod 755 ${DESTDIR}${PREFIX}/bin/slock
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@chmod u+s ${DESTDIR}${PREFIX}/bin/slock
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uninstall:
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@echo removing executable file from ${DESTDIR}${PREFIX}/bin
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@rm -f ${DESTDIR}${PREFIX}/bin/slock
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.PHONY: all options clean dist install uninstall
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slock - simple screen locker
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============================
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simple screen locker utility for X.
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Requirements
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------------
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In order to build slock you need the Xlib header files.
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Installation
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------------
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Edit config.mk to match your local setup (slock is installed into
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the /usr/local namespace by default).
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Afterwards enter the following command to build and install slock (if
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necessary as root):
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make clean install
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Running slock
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-------------
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Simply invoke the 'slock' command.
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# slock version
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VERSION = 0.1
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# Customize below to fit your system
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# paths
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PREFIX = /usr/local
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MANPREFIX = ${PREFIX}/share/man
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X11INC = /usr/X11R6/include
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X11LIB = /usr/X11R6/lib
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# includes and libs
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INCS = -I. -I/usr/include -I${X11INC}
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LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11
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# flags
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CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\"
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LDFLAGS = ${LIBS}
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#CFLAGS = -g -Wall -O2 ${INCS} -DVERSION=\"${VERSION}\"
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#LDFLAGS = -g ${LIBS}
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# compiler and linker
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CC = cc
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LD = ${CC}
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@ -0,0 +1,92 @@
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/* (C)opyright MMIV-MMV Anselm R. Garbe <garbeam at gmail dot com>
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* See LICENSE file for license details.
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*/
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#define _XOPEN_SOURCE
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#include <shadow.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <X11/keysym.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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int
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main(int argc, char **argv) {
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char buf[32], passwd[256];
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int num, prev_nitem;
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struct spwd *sp;
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unsigned int i, len;
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Bool running = True;
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KeySym ksym;
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Display *dpy;
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XEvent ev;
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if((argc > 1) && !strncmp(argv[1], "-v", 3)) {
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fputs("slock-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
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exit(EXIT_SUCCESS);
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}
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if(!(sp = getspnam(getenv("USER")))) {
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fputs("slock: cannot retrieve password entry (make sure to suid slock)\n", stderr);
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exit(EXIT_FAILURE);
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}
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endspent();
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if(!(dpy = XOpenDisplay(0))) {
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fputs("slock: cannot open display\n", stderr);
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exit(EXIT_FAILURE);
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}
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/* init */
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passwd[0] = 0;
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while(XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
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GrabModeAsync, CurrentTime) != GrabSuccess)
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usleep(1000);
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/* main event loop */
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while(running && !XNextEvent(dpy, &ev))
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if(ev.type == KeyPress) {
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len = strlen(passwd);
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buf[0] = 0;
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num = XLookupString(&ev.xkey, buf, sizeof(buf), &ksym, 0);
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if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
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|| IsMiscFunctionKey(ksym) || IsPFKey(ksym)
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|| IsPrivateKeypadKey(ksym))
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continue;
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/* first check if a control mask is omitted */
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if(ev.xkey.state & ControlMask) {
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switch (ksym) {
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case XK_h:
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case XK_H: ksym = XK_BackSpace;
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break;
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case XK_u:
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case XK_U: passwd[0] = 0;
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continue;
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}
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}
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switch(ksym) {
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case XK_Return:
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running = strncmp(crypt(passwd, sp->sp_pwdp), sp->sp_pwdp, sizeof(passwd));
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passwd[0] = 0;
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break;
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case XK_Escape:
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passwd[0] = 0;
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break;
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case XK_BackSpace:
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if(len)
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passwd[--len] = 0;
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break;
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default:
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if(num && !iscntrl((int) buf[0])) {
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buf[num] = 0;
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if(len)
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strncat(passwd, buf, sizeof(passwd));
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else
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strncpy(passwd, buf, sizeof(passwd));
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}
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break;
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}
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}
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XCloseDisplay(dpy);
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return 0;
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}
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