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Skip leading # signs for the color, fix input validation

pull/1/head
Michael Stapelberg 2009-08-02 19:50:30 +02:00
parent 9c4dee2e86
commit 206036a852
1 changed files with 9 additions and 6 deletions
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15
i3lock.c
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@ -45,7 +45,6 @@ static void die(const char *errstr, ...) {
exit(EXIT_FAILURE);
}
/*
* Returns the colorpixel to use for the given hex color (think of HTML).
*
@ -197,13 +196,17 @@ int main(int argc, char *argv[]) {
xpm_image = true;
break;
case 'c':
strncpy(color, optarg, 6);
color[6] = 0;
{
char *arg = optarg;
/* Skip # if present */
if (arg[0] == '#')
arg++;
if (strlen(arg) != 6 || sscanf(arg, "%06[0-9a-fA-F]", color) != 1)
die("color is invalid, color must be given in 6-byte format: rrggbb\n");
char parsed_color[7];
if (strlen(color) != 6 || sscanf(color, "%06[0-9a-fA-F]", parsed_color) != 1)
die("color is invalid, color must be given in 6-byte format: rrggbb\n");
break;
}
default:
die("i3lock: Unknown option. Syntax: i3lock [-v] [-n] [-b] [-d] [-i image.xpm] [-c color]\n");
}