1 /* $NetBSD: parseint.c,v 1.1.1.1 2009/12/13 16:54:11 kardel 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 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 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 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