final fixes and cleanups - slock - simple X display locker utility
(HTM) git clone git://git.suckless.org/slock
(DIR) Log
(DIR) Files
(DIR) Refs
(DIR) README
(DIR) LICENSE
---
(DIR) commit 6fdf8be2044145c11f7e1eb165613f791c514520
(DIR) parent 1fd4e7b23e872c16902d222b6c870116c948903c
(HTM) Author: Anselm R. Garbe <garbeam@gmail.com>
Date: Sat, 24 Nov 2007 21:17:32 +0100
final fixes and cleanups
Diffstat:
M README | 2 +-
M config.mk | 1 -
M slock.c | 35 +++++++++++++++++--------------
3 files changed, 20 insertions(+), 18 deletions(-)
---
(DIR) diff --git a/README b/README
@@ -21,4 +21,4 @@ necessary as root):
Running slock
-------------
-Simply invoke the 'slock' command.
+Simply invoke the 'slock' command. To get out of it, enter your password.
(DIR) diff --git a/config.mk b/config.mk
@@ -5,7 +5,6 @@ VERSION = 0.7
# paths
PREFIX = /usr/local
-MANPREFIX = ${PREFIX}/share/man
X11INC = /usr/X11R6/include
X11LIB = /usr/X11R6/lib
(DIR) diff --git a/slock.c b/slock.c
@@ -7,6 +7,7 @@
#include <ctype.h>
#include <pwd.h>
+#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
@@ -16,15 +17,23 @@
#include <X11/Xlib.h>
#include <X11/Xutil.h>
+void
+eprint(const char *errstr, ...) {
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(EXIT_FAILURE);
+}
+
const char *
get_password() { /* only run as root */
const char *rval;
struct passwd *pw;
- if(geteuid() != 0) {
- fputs("slock: cannot retrieve password entry (make sure to suid slock)\n", stderr);
- exit(EXIT_FAILURE);
- }
+ if(geteuid() != 0)
+ eprint("slock: cannot retrieve password entry (make sure to suid slock)\n");
pw = getpwuid(getuid());
endpwent();
rval = pw->pw_passwd;
@@ -38,10 +47,8 @@ get_password() { /* only run as root */
}
#endif
/* drop privileges */
- if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0) {
- fputs("slock: cannot drop privileges\n",stdout);
- exit(EXIT_FAILURE);
- }
+ if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0)
+ eprint("slock: cannot drop privileges\n");
return rval;
}
@@ -62,15 +69,11 @@ main(int argc, char **argv) {
XEvent ev;
XSetWindowAttributes wa;
- if((argc > 1) && !strncmp(argv[1], "-v", 3)) {
- fputs("slock-"VERSION", © 2006-2007 Anselm R. Garbe\n", stdout);
- exit(EXIT_SUCCESS);
- }
+ if((argc > 1) && !strncmp(argv[1], "-v", 3))
+ eprint("slock-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk\n");
pws = get_password();
- if(!(dpy = XOpenDisplay(0))) {
- fputs("slock: cannot open display\n", stderr);
- exit(EXIT_FAILURE);
- }
+ if(!(dpy = XOpenDisplay(0)))
+ eprint("slock: cannot open display\n");
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);