simple X display locker utility
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commit a6dc051e3744ce5b14c54d2d246d3e8258207e76
parent bdcbeab0d8ac0963c61ae1d9d1ed57d3effb8ec3
Author: FRIGN <>
Date:   Sun, 14 Feb 2016 01:48:48 +0100

No need for usage()

There are 2 arguments why -v and -h are broken:

	1) if you are running off git, -v will show the last stable
           release, effectively making this option useless.
           people running stable versions leave open an attack surface
           this way in case there are vulnerabilities found.
           99% of the people are also using package managers to keep
           their software up to date, instead of running $TOOL -v to
           check how old it is.
        2) -h is a sad excuse for not just looking at the manual page
           (man 1 slock). Given we accept a post_lock_command, we can't
           be as liberal and just intercept certain flags.

I changed the manpage to reflect this change.

slock.1 | 24+++++++-----------------
slock.c | 16++--------------
2 files changed, 9 insertions(+), 31 deletions(-)

diff --git a/slock.1 b/slock.1 @@ -1,29 +1,19 @@ .TH SLOCK 1 slock\-VERSION .SH NAME -slock \- simple X display locker +slock \- simple X screen locker .SH SYNOPSIS .B slock -.RB [ \-v -| -.IR post_lock_command ] +.RB [ +.IR cmd +] .SH DESCRIPTION .B slock -is a screen locker for X. If provided, the -.IR post_lock_command -will be executed when the screen is locked. -.SH OPTIONS -.TP -.B \-v -prints version information to stdout, then exits. +is an X screen locker. If provided, +.IR cmd +is executed after the screen has been locked. .SH EXAMPLES $ slock /usr/sbin/s2ram .SH CUSTOMIZATION .B slock can be customized by creating a custom config.h and (re)compiling the source code. This keeps it fast, secure and simple. -.SH AUTHORS -See the LICENSE file for the authors. -.SH LICENSE -See the LICENSE file for the terms of redistribution. -.SH BUGS -Please report them. diff --git a/slock.c b/slock.c @@ -272,27 +272,15 @@ lockscreen(Display *dpy, int screen) return NULL; } -static void -usage(void) -{ - fprintf(stderr, "usage: slock [-v|POST_LOCK_CMD]\n"); - exit(1); -} - int -main(int argc, char **argv) { +main(int argc, char **argv) +{ #ifndef HAVE_BSD_AUTH const char *pws; #endif Display *dpy; int screen; - if ((argc == 2) && !strcmp("-v", argv[1])) - die("slock-%s, © 2006-2016 slock engineers\n", VERSION); - - if ((argc == 2) && !strcmp("-h", argv[1])) - usage(); - #ifdef __linux__ dontkillme(); #endif