GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/net/inet_network.c Lines: 0 29 0.0 %
Date: 2017-11-13 Branches: 0 26 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: inet_network.c,v 1.13 2015/10/22 23:55:51 mmcc Exp $ */
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/*
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 * Copyright (c) 1983, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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/*
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 * Internet network address interpretation routine.
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 * The library routines call this routine to interpret
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 * network numbers.
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 */
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in_addr_t
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inet_network(const char *cp)
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{
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	in_addr_t val, base, n;
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	u_char c;
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	in_addr_t parts[4], *pp = parts;
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	int i;
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again:
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	val = 0; base = 10;
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	if (*cp == '0')
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		base = 8, cp++;
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	if (*cp == 'x' || *cp == 'X')
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		base = 16, cp++;
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	while ((c = *cp)) {
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		if (isdigit(c)) {
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			val = (val * base) + (c - '0');
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			cp++;
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			continue;
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		}
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		if (base == 16 && isxdigit(c)) {
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			val = (val << 4) + (c + 10 - (islower(c) ? 'a' : 'A'));
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			cp++;
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			continue;
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		}
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		break;
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	}
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	if (*cp == '.') {
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		if (pp >= parts + 3)
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			return (INADDR_NONE);
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		*pp++ = val, cp++;
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		goto again;
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	}
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	if (*cp && !isspace((unsigned char)*cp))
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		return (INADDR_NONE);
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	*pp++ = val;
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	n = pp - parts;
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	for (val = 0, i = 0; i < 4; i++) {
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		val <<= 8;
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		if (i < n)
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			val |= parts[i] & 0xff;
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	}
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	return (val);
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}
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DEF_WEAK(inet_network);