/* $NetBSD: parseint.c,v 1.1.4.2 2024/02/29 11:39:01 martin Exp $ */ /* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * SPDX-License-Identifier: MPL-2.0 * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ /*! \file */ #include #include #include #include #include #include #include isc_result_t isc_parse_uint32(uint32_t *uip, const char *string, int base) { unsigned long n; uint32_t r; char *e; if (!isalnum((unsigned char)(string[0]))) { return (ISC_R_BADNUMBER); } errno = 0; n = strtoul(string, &e, base); if (*e != '\0') { return (ISC_R_BADNUMBER); } /* * Where long is 64 bits we need to convert to 32 bits then test for * equality. This is a no-op on 32 bit machines and a good compiler * will optimise it away. */ r = (uint32_t)n; if ((n == ULONG_MAX && errno == ERANGE) || (n != (unsigned long)r)) { return (ISC_R_RANGE); } *uip = r; return (ISC_R_SUCCESS); } isc_result_t isc_parse_uint16(uint16_t *uip, const char *string, int base) { uint32_t val; isc_result_t result; result = isc_parse_uint32(&val, string, base); if (result != ISC_R_SUCCESS) { return (result); } if (val > 0xFFFF) { return (ISC_R_RANGE); } *uip = (uint16_t)val; return (ISC_R_SUCCESS); } isc_result_t isc_parse_uint8(uint8_t *uip, const char *string, int base) { uint32_t val; isc_result_t result; result = isc_parse_uint32(&val, string, base); if (result != ISC_R_SUCCESS) { return (result); } if (val > 0xFF) { return (ISC_R_RANGE); } *uip = (uint8_t)val; return (ISC_R_SUCCESS); }