1 /* $NetBSD: parseint.c,v 1.6 2020/05/25 20:47:20 christos Exp $ */
2
3 /*
4 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 2001-2003 Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 /* Id: parseint.c,v 1.8 2007/06/19 23:47:17 tbox Exp */
21
22 /*! \file */
23
24 #include <config.h>
25
26 #include <ctype.h>
27 #include <errno.h>
28 #include <limits.h>
29
30 #include <isc/parseint.h>
31 #include <isc/result.h>
32 #include <isc/stdlib.h>
33
34 isc_result_t
isc_parse_uint32(isc_uint32_t * uip,const char * string,int base)35 isc_parse_uint32(isc_uint32_t *uip, const char *string, int base) {
36 unsigned long n;
37 char *e;
38 if (! isalnum((unsigned char)(string[0])))
39 return (ISC_R_BADNUMBER);
40 errno = 0;
41 n = strtoul(string, &e, base);
42 if (*e != '\0')
43 return (ISC_R_BADNUMBER);
44 if (n == ULONG_MAX && errno == ERANGE)
45 return (ISC_R_RANGE);
46 *uip = n;
47 return (ISC_R_SUCCESS);
48 }
49
50 isc_result_t
isc_parse_uint16(isc_uint16_t * uip,const char * string,int base)51 isc_parse_uint16(isc_uint16_t *uip, const char *string, int base) {
52 isc_uint32_t val;
53 isc_result_t result;
54 result = isc_parse_uint32(&val, string, base);
55 if (result != ISC_R_SUCCESS)
56 return (result);
57 if (val > 0xFFFF)
58 return (ISC_R_RANGE);
59 *uip = (isc_uint16_t) val;
60 return (ISC_R_SUCCESS);
61 }
62
63 isc_result_t
isc_parse_uint8(isc_uint8_t * uip,const char * string,int base)64 isc_parse_uint8(isc_uint8_t *uip, const char *string, int base) {
65 isc_uint32_t val;
66 isc_result_t result;
67 result = isc_parse_uint32(&val, string, base);
68 if (result != ISC_R_SUCCESS)
69 return (result);
70 if (val > 0xFF)
71 return (ISC_R_RANGE);
72 *uip = (isc_uint8_t) val;
73 return (ISC_R_SUCCESS);
74 }
75