From 206036a852e3d9c598e3fe82d84fd2ac54bbaa55 Mon Sep 17 00:00:00 2001 From: Michael Stapelberg Date: Sun, 2 Aug 2009 19:50:30 +0200 Subject: [PATCH] Skip leading # signs for the color, fix input validation --- i3lock.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/i3lock.c b/i3lock.c index eca32e9..64d2301 100644 --- a/i3lock.c +++ b/i3lock.c @@ -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"); } -- 2.39.5