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Remove is_hex_str() (trying to guess if a number was hex or not). It is not 

documented and can lead to unexpected behavior.
This commit is contained in:
christos 2020-10-11 18:46:21 +00:00
parent d32a26f01d
commit 662c0e244b
1 changed files with 3 additions and 27 deletions
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30
games/factor/factor.c
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@ -1,4 +1,4 @@
/* $NetBSD: factor.c,v 1.36 2020/10/11 17:18:34 christos Exp $ */
/* $NetBSD: factor.c,v 1.37 2020/10/11 18:46:21 christos Exp $ */
/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
@ -41,7 +41,7 @@ __COPYRIGHT("@(#) Copyright (c) 1989, 1993\
__SCCSID("@(#)factor.c 8.4 (Berkeley) 5/4/95");
#endif
#ifdef __RCSID
__RCSID("$NetBSD: factor.c,v 1.36 2020/10/11 17:18:34 christos Exp $");
__RCSID("$NetBSD: factor.c,v 1.37 2020/10/11 18:46:21 christos Exp $");
#endif
#ifdef __FBSDID
__FBSDID("$FreeBSD: head/usr.bin/factor/factor.c 356666 2020-01-12 20:25:11Z gad $");
@ -120,7 +120,6 @@ static void BN_print_fp(FILE *, const BIGNUM *);
static void BN_print_dec_fp(FILE *, const BIGNUM *);
static void convert_str2bn(BIGNUM **, char *);
static bool is_hex_str(char *);
static void pr_fact(BIGNUM *, int, int); /* print factors of a value */
static void pr_print(BIGNUM *, int, int); /* print a prime */
static void usage(void) __dead;
@ -451,29 +450,6 @@ BN_dup(const BIGNUM *a)
#endif
/*
* Scan the string from left-to-right to see if the longest substring
* is a valid hexadecimal number.
*/
static bool
is_hex_str(char *str)
{
char c, *p;
bool saw_hex = false;
for (p = str; *p; p++) {
if (isdigit((unsigned char)*p))
continue;
c = tolower((unsigned char)*p);
if (c >= 'a' && c <= 'f') {
saw_hex = true;
continue;
}
break; /* Not a hexadecimal digit. */
}
return saw_hex;
}
/* Convert string pointed to by *str to a bignum. */
static void
convert_str2bn(BIGNUM **val, char *p)
@ -486,7 +462,7 @@ convert_str2bn(BIGNUM **val, char *p)
if (*p == '0' && (p[1] == 'x' || p[1] == 'X')) {
n = BN_hex2bn(val, p + 2);
} else {
n = is_hex_str(p) ? BN_hex2bn(val, p) : BN_dec2bn(val, p);
n = BN_dec2bn(val, p);
}
if (n == 0)
errx(1, "%s: illegal numeric format.", p);