From db4429471393297d46bb81492b2a480ca2c7ac4c Mon Sep 17 00:00:00 2001
From: June McEnroe <june@causal.agency>
Date: Wed, 18 Dec 2019 15:50:27 -0500
Subject: Bail from hi if input is binary

NULs in the input cause an infinite loop in htmlEscape, not to mention
regexes obviously not working, etc.
---
 bin/hi.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'bin')

diff --git a/bin/hi.c b/bin/hi.c
index c8533e55..4021d1bc 100644
--- a/bin/hi.c
+++ b/bin/hi.c
@@ -739,6 +739,7 @@ int main(int argc, char *argv[]) {
 		if (!str) err(EX_OSERR, "realloc");
 	}
 	if (ferror(file)) err(EX_IOERR, "fread");
+	if (memchr(str, 0, len)) errx(EX_DATAERR, "input is binary");
 	str[len] = '\0';
 
 	enum Class *hi = calloc(len, sizeof(*hi));
-- 
cgit 1.4.1