btcs

commit 9005e5c975d57701622880ac9ff93fecf92f2e6b
parent 679507900ae8bbf716757186c90a4b205302758d
Author: William Casarin <jb55@jb55.com>
Date:   Wed, 19 Jun 2019 00:09:57 -0700

make reading input break on the first non-hex char

Diffstat:
M
util.c
 | 
3
++-

1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/util.c b/util.c
@@ -109,12 +109,13 @@ ssize_t getline(char **lineptr, size_t *n, FILE *stream) {
 int read_arg_or_stdin(const char *arg, unsigned char *buf, size_t buflen,
 		      size_t *written)
 {
+	unsigned char dummy;
 	if (arg != NULL) {
 		unsigned char *p = buf;
 		bool done = false;
 		for (size_t i = 0; i < buflen; i++) {
 			*p = arg[i];
-			if (arg[i] == 0) {
+			if (*p == 0 || !char_to_hex(&dummy, *p)) {
 				done = true;
 				break;
 			}