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Diffstat (limited to 'contrib/ntp/lib/isc/parseint.c')
-rw-r--r-- | contrib/ntp/lib/isc/parseint.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/contrib/ntp/lib/isc/parseint.c b/contrib/ntp/lib/isc/parseint.c new file mode 100644 index 0000000..266d44c --- /dev/null +++ b/contrib/ntp/lib/isc/parseint.c @@ -0,0 +1,72 @@ +/* + * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2001-2003 Internet Software Consortium. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +/* $Id: parseint.c,v 1.8 2007/06/19 23:47:17 tbox Exp $ */ + +/*! \file */ + +#include <config.h> + +#include <ctype.h> +#include <errno.h> +#include <limits.h> + +#include <isc/parseint.h> +#include <isc/result.h> +#include <isc/stdlib.h> + +isc_result_t +isc_parse_uint32(isc_uint32_t *uip, const char *string, int base) { + unsigned long n; + 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); + if (n == ULONG_MAX && errno == ERANGE) + return (ISC_R_RANGE); + *uip = n; + return (ISC_R_SUCCESS); +} + +isc_result_t +isc_parse_uint16(isc_uint16_t *uip, const char *string, int base) { + isc_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 = (isc_uint16_t) val; + return (ISC_R_SUCCESS); +} + +isc_result_t +isc_parse_uint8(isc_uint8_t *uip, const char *string, int base) { + isc_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 = (isc_uint8_t) val; + return (ISC_R_SUCCESS); +} |