tyler/suckless-slock
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Keep the line-lengths at bay

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This makes the code more readable and prevents wraparounds in the
editor.
This commit is contained in:
FRIGN 2016-10-01 23:50:49 +02:00 committed by Markus Teich
parent bd069b08c5
commit 0a43b78d00
1 changed files with 42 additions and 28 deletions
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70
slock.c
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@ -76,10 +76,9 @@ dontkillme(void)
if (fclose(f)) { if (fclose(f)) {
if (errno == EACCES) if (errno == EACCES)
die("slock: unable to disable OOM killer. " die("slock: unable to disable OOM killer. "
"suid or sgid set?\n"); "Make sure to suid or sgid slock.\n");
else else
die("slock: fclose %s: %s\n", oomfile, die("slock: fclose %s: %s\n", oomfile, strerror(errno));
strerror(errno));
} }
} }
#endif #endif
@ -104,17 +103,20 @@ gethash(void)
if (hash[0] == 'x' && hash[1] == '\0') { if (hash[0] == 'x' && hash[1] == '\0') {
struct spwd *sp; struct spwd *sp;
if (!(sp = getspnam(pw->pw_name))) if (!(sp = getspnam(pw->pw_name)))
die("slock: getspnam: cannot retrieve shadow entry (make sure to suid or sgid slock)\n"); die("slock: getspnam: cannot retrieve shadow entry. "
"Make sure to suid or sgid slock.\n");
hash = sp->sp_pwdp; hash = sp->sp_pwdp;
} }
#else #else
if (hash[0] == '*' && hash[1] == '\0') { if (hash[0] == '*' && hash[1] == '\0') {
#ifdef __OpenBSD__ #ifdef __OpenBSD__
if (!(pw = getpwuid_shadow(getuid()))) if (!(pw = getpwuid_shadow(getuid())))
die("slock: getpwnam_shadow: cannot retrieve shadow entry (make sure to suid or sgid slock)\n"); die("slock: getpwnam_shadow: cannot retrieve shadow entry. "
"Make sure to suid or sgid slock.\n");
hash = pw->pw_passwd; hash = pw->pw_passwd;
#else #else
die("slock: getpwuid: cannot retrieve shadow entry (make sure to suid or sgid slock)\n"); die("slock: getpwuid: cannot retrieve shadow entry. "
"Make sure to suid or sgid slock.\n");
#endif /* __OpenBSD__ */ #endif /* __OpenBSD__ */
} }
#endif /* HAVE_SHADOW_H */ #endif /* HAVE_SHADOW_H */
@ -126,6 +128,7 @@ static void
readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens, readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
const char *hash) const char *hash)
{ {
XRRScreenChangeNotifyEvent *rre;
char buf[32], passwd[256], *inputhash; char buf[32], passwd[256], *inputhash;
int num, screen, running, failure; int num, screen, running, failure;
unsigned int len, color; unsigned int len, color;
@ -177,25 +180,29 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
passwd[len--] = 0; passwd[len--] = 0;
break; break;
default: default:
if (num && !iscntrl((int)buf[0]) && (len + num < sizeof(passwd))) { if (num && !iscntrl((int)buf[0]) &&
(len + num < sizeof(passwd))) {
memcpy(passwd + len, buf, num); memcpy(passwd + len, buf, num);
len += num; len += num;
} }
break; break;
} }
color = len ? INPUT : (failure || failonclear ? FAILED : INIT); color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
if (running && oldc != color) { if (running && oldc != color) {
for (screen = 0; screen < nscreens; screen++) { for (screen = 0; screen < nscreens; screen++) {
XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[color]); XSetWindowBackground(dpy,
locks[screen]->win,
locks[screen]->colors[color]);
XClearWindow(dpy, locks[screen]->win); XClearWindow(dpy, locks[screen]->win);
} }
oldc = color; oldc = color;
} }
} else if (rr->active && ev.type == rr->evbase + RRScreenChangeNotify) { } else if (rr->active && ev.type == rr->evbase + RRScreenChangeNotify) {
XRRScreenChangeNotifyEvent *rre = (XRRScreenChangeNotifyEvent*)&ev; rre = (XRRScreenChangeNotifyEvent*)&ev;
for (screen = 0; screen < nscreens; screen++) { for (screen = 0; screen < nscreens; screen++) {
if (locks[screen]->win == rre->window) { if (locks[screen]->win == rre->window) {
XResizeWindow(dpy, locks[screen]->win, rre->width, rre->height); XResizeWindow(dpy, locks[screen]->win,
rre->width, rre->height);
XClearWindow(dpy, locks[screen]->win); XClearWindow(dpy, locks[screen]->win);
} }
} }
@ -221,31 +228,37 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
lock->root = RootWindow(dpy, lock->screen); lock->root = RootWindow(dpy, lock->screen);
for (i = 0; i < NUMCOLS; i++) { for (i = 0; i < NUMCOLS; i++) {
XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen), colorname[i], &color, &dummy); XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
colorname[i], &color, &dummy);
lock->colors[i] = color.pixel; lock->colors[i] = color.pixel;
} }
/* init */ /* init */
wa.override_redirect = 1; wa.override_redirect = 1;
wa.background_pixel = lock->colors[INIT]; wa.background_pixel = lock->colors[INIT];
lock->win = XCreateWindow(dpy, lock->root, 0, 0, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), lock->win = XCreateWindow(dpy, lock->root, 0, 0,
0, DefaultDepth(dpy, lock->screen), CopyFromParent, DisplayWidth(dpy, lock->screen),
DefaultVisual(dpy, lock->screen), CWOverrideRedirect | CWBackPixel, &wa); DisplayHeight(dpy, lock->screen),
0, DefaultDepth(dpy, lock->screen),
CopyFromParent,
DefaultVisual(dpy, lock->screen),
CWOverrideRedirect | CWBackPixel, &wa);
lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8); lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap, &color, &color, 0, 0); invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
&color, &color, 0, 0);
XDefineCursor(dpy, lock->win, invisible); XDefineCursor(dpy, lock->win, invisible);
/* Try to grab mouse pointer *and* keyboard for 600ms, else fail the lock */ /* Try to grab mouse pointer *and* keyboard for 600ms, else fail the lock */
for (i = 0, ptgrab = kbgrab = -1; i < 6; i++) { for (i = 0, ptgrab = kbgrab = -1; i < 6; i++) {
if (ptgrab != GrabSuccess) { if (ptgrab != GrabSuccess) {
ptgrab = XGrabPointer(dpy, lock->root, False, ptgrab = XGrabPointer(dpy, lock->root, False,
ButtonPressMask | ButtonReleaseMask | ButtonPressMask | ButtonReleaseMask |
PointerMotionMask, GrabModeAsync, PointerMotionMask, GrabModeAsync,
GrabModeAsync, None, invisible, CurrentTime); GrabModeAsync, None, invisible, CurrentTime);
} }
if (kbgrab != GrabSuccess) { if (kbgrab != GrabSuccess) {
kbgrab = XGrabKeyboard(dpy, lock->root, True, kbgrab = XGrabKeyboard(dpy, lock->root, True,
GrabModeAsync, GrabModeAsync, CurrentTime); GrabModeAsync, GrabModeAsync, CurrentTime);
} }
/* input is grabbed: we can lock the screen */ /* input is grabbed: we can lock the screen */
@ -268,9 +281,11 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
/* we couldn't grab all input: fail out */ /* we couldn't grab all input: fail out */
if (ptgrab != GrabSuccess) if (ptgrab != GrabSuccess)
fprintf(stderr, "slock: unable to grab mouse pointer for screen %d\n", screen); fprintf(stderr, "slock: unable to grab mouse pointer for screen %d\n",
screen);
if (kbgrab != GrabSuccess) if (kbgrab != GrabSuccess)
fprintf(stderr, "slock: unable to grab keyboard for screen %d\n", screen); fprintf(stderr, "slock: unable to grab keyboard for screen %d\n",
screen);
return NULL; return NULL;
} }
@ -303,13 +318,13 @@ main(int argc, char **argv) {
/* validate drop-user and -group */ /* validate drop-user and -group */
errno = 0; errno = 0;
if (!(pwd = getpwnam(user))) if (!(pwd = getpwnam(user)))
die("slock: getpwnam %s: %s\n", user, errno ? die("slock: getpwnam %s: %s\n", user,
strerror(errno) : "user entry not found"); errno ? strerror(errno) : "user entry not found");
duid = pwd->pw_uid; duid = pwd->pw_uid;
errno = 0; errno = 0;
if (!(grp = getgrnam(group))) if (!(grp = getgrnam(group)))
die("slock: getgrnam %s: %s\n", group, errno ? die("slock: getgrnam %s: %s\n", group,
strerror(errno) : "group entry not found"); errno ? strerror(errno) : "group entry not found");
dgid = grp->gr_gid; dgid = grp->gr_gid;
#ifdef __linux__ #ifdef __linux__
@ -360,8 +375,7 @@ main(int argc, char **argv) {
if (close(ConnectionNumber(dpy)) < 0) if (close(ConnectionNumber(dpy)) < 0)
die("slock: close: %s\n", strerror(errno)); die("slock: close: %s\n", strerror(errno));
execvp(argv[0], argv); execvp(argv[0], argv);
fprintf(stderr, "slock: execvp %s: %s\n", argv[0], fprintf(stderr, "slock: execvp %s: %s\n", argv[0], strerror(errno));
strerror(errno));
_exit(1); _exit(1);
} }
} }