1 24fb1a39 2025-06-02 kirill /*	$OpenBSD: strtonum.c,v 1.6 2004/08/03 19:38:01 millert Exp $	*/
 2 24fb1a39 2025-06-02 kirill 
 3 24fb1a39 2025-06-02 kirill /*
 4 24fb1a39 2025-06-02 kirill  * Copyright (c) 2004 Ted Unangst and Todd Miller
 5 24fb1a39 2025-06-02 kirill  * All rights reserved.
 6 24fb1a39 2025-06-02 kirill  *
 7 24fb1a39 2025-06-02 kirill  * Permission to use, copy, modify, and distribute this software for any
 8 24fb1a39 2025-06-02 kirill  * purpose with or without fee is hereby granted, provided that the above
 9 24fb1a39 2025-06-02 kirill  * copyright notice and this permission notice appear in all copies.
10 24fb1a39 2025-06-02 kirill  *
11 24fb1a39 2025-06-02 kirill  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 24fb1a39 2025-06-02 kirill  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 24fb1a39 2025-06-02 kirill  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 24fb1a39 2025-06-02 kirill  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 24fb1a39 2025-06-02 kirill  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 24fb1a39 2025-06-02 kirill  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 24fb1a39 2025-06-02 kirill  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 24fb1a39 2025-06-02 kirill  */
19 24fb1a39 2025-06-02 kirill 
20 24fb1a39 2025-06-02 kirill /* OPENBSD ORIGINAL: lib/libc/stdlib/strtonum.c */
21 24fb1a39 2025-06-02 kirill 
22 24fb1a39 2025-06-02 kirill #include "openbsd-compat.h"
23 24fb1a39 2025-06-02 kirill 
24 24fb1a39 2025-06-02 kirill #ifndef HAVE_STRTONUM
25 24fb1a39 2025-06-02 kirill #include <stdlib.h>
26 24fb1a39 2025-06-02 kirill #include <limits.h>
27 24fb1a39 2025-06-02 kirill #include <errno.h>
28 24fb1a39 2025-06-02 kirill 
29 24fb1a39 2025-06-02 kirill #define INVALID 	1
30 24fb1a39 2025-06-02 kirill #define TOOSMALL 	2
31 24fb1a39 2025-06-02 kirill #define TOOLARGE 	3
32 24fb1a39 2025-06-02 kirill 
33 24fb1a39 2025-06-02 kirill long long
34 24fb1a39 2025-06-02 kirill strtonum(const char *numstr, long long minval, long long maxval,
35 24fb1a39 2025-06-02 kirill     const char **errstrp)
36 24fb1a39 2025-06-02 kirill {
37 24fb1a39 2025-06-02 kirill 	long long ll = 0;
38 24fb1a39 2025-06-02 kirill 	char *ep;
39 24fb1a39 2025-06-02 kirill 	int error = 0;
40 24fb1a39 2025-06-02 kirill 	struct errval {
41 24fb1a39 2025-06-02 kirill 		const char *errstr;
42 24fb1a39 2025-06-02 kirill 		int err;
43 24fb1a39 2025-06-02 kirill 	} ev[4] = {
44 24fb1a39 2025-06-02 kirill 		{ NULL,		0 },
45 24fb1a39 2025-06-02 kirill 		{ "invalid",	EINVAL },
46 24fb1a39 2025-06-02 kirill 		{ "too small",	ERANGE },
47 24fb1a39 2025-06-02 kirill 		{ "too large",	ERANGE },
48 24fb1a39 2025-06-02 kirill 	};
49 24fb1a39 2025-06-02 kirill 
50 24fb1a39 2025-06-02 kirill 	ev[0].err = errno;
51 24fb1a39 2025-06-02 kirill 	errno = 0;
52 24fb1a39 2025-06-02 kirill 	if (minval > maxval)
53 24fb1a39 2025-06-02 kirill 		error = INVALID;
54 24fb1a39 2025-06-02 kirill 	else {
55 24fb1a39 2025-06-02 kirill 		ll = strtoll(numstr, &ep, 10);
56 24fb1a39 2025-06-02 kirill 		if (numstr == ep || *ep != '\0')
57 24fb1a39 2025-06-02 kirill 			error = INVALID;
58 24fb1a39 2025-06-02 kirill 		else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval)
59 24fb1a39 2025-06-02 kirill 			error = TOOSMALL;
60 24fb1a39 2025-06-02 kirill 		else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval)
61 24fb1a39 2025-06-02 kirill 			error = TOOLARGE;
62 24fb1a39 2025-06-02 kirill 	}
63 24fb1a39 2025-06-02 kirill 	if (errstrp != NULL)
64 24fb1a39 2025-06-02 kirill 		*errstrp = ev[error].errstr;
65 24fb1a39 2025-06-02 kirill 	errno = ev[error].err;
66 24fb1a39 2025-06-02 kirill 	if (error)
67 24fb1a39 2025-06-02 kirill 		ll = 0;
68 24fb1a39 2025-06-02 kirill 
69 24fb1a39 2025-06-02 kirill 	return (ll);
70 24fb1a39 2025-06-02 kirill }
71 24fb1a39 2025-06-02 kirill 
72 24fb1a39 2025-06-02 kirill #endif /* HAVE_STRTONUM */