GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/net/getservent.c Lines: 0 82 0.0 %
Date: 2017-11-13 Branches: 0 56 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: getservent.c,v 1.15 2015/09/14 07:38:38 guenther 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 <sys/socket.h>
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#include <errno.h>
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#include <limits.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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void
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setservent_r(int f, struct servent_data *sd)
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{
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	if (sd->fp == NULL)
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		sd->fp = fopen(_PATH_SERVICES, "re" );
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	else
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		rewind(sd->fp);
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	sd->stayopen |= f;
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}
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DEF_WEAK(setservent_r);
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void
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endservent_r(struct servent_data *sd)
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{
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	if (sd->fp) {
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		fclose(sd->fp);
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		sd->fp = NULL;
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	}
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	free(sd->aliases);
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	sd->aliases = NULL;
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	sd->maxaliases = 0;
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	free(sd->line);
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	sd->line = NULL;
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	sd->stayopen = 0;
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}
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DEF_WEAK(endservent_r);
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int
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getservent_r(struct servent *se, struct servent_data *sd)
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{
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	char *p, *cp, **q, *endp;
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	size_t len;
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	long l;
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	int serrno;
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	if (sd->fp == NULL && (sd->fp = fopen(_PATH_SERVICES, "re" )) == NULL)
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		return (-1);
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again:
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	if ((p = fgetln(sd->fp, &len)) == NULL)
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		return (-1);
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	if (len == 0 || *p == '#' || *p == '\n')
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		goto again;
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	if (p[len-1] == '\n')
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		len--;
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	if ((cp = memchr(p, '#', len)) != NULL)
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		len = cp - p;
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	cp = realloc(sd->line, len + 1);
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	if (cp == NULL)
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		return (-1);
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	sd->line = se->s_name = memcpy(cp, p, len);
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	cp[len] = '\0';
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	p = strpbrk(cp, " \t");
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	if (p == NULL)
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		goto again;
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	*p++ = '\0';
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	while (*p == ' ' || *p == '\t')
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		p++;
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	cp = strpbrk(p, ",/");
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	if (cp == NULL)
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		goto again;
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	*cp++ = '\0';
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	l = strtol(p, &endp, 10);
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	if (endp == p || *endp != '\0' || l < 0 || l > USHRT_MAX)
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		goto again;
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	se->s_port = htons((in_port_t)l);
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	se->s_proto = cp;
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	if (sd->aliases == NULL) {
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		sd->maxaliases = 10;
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		sd->aliases = calloc(sd->maxaliases, sizeof(char *));
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		if (sd->aliases == NULL) {
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			serrno = errno;
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			endservent_r(sd);
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			errno = serrno;
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			return (-1);
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		}
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	}
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	q = se->s_aliases = sd->aliases;
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	cp = strpbrk(cp, " \t");
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	if (cp != NULL)
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		*cp++ = '\0';
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	while (cp && *cp) {
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		if (*cp == ' ' || *cp == '\t') {
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			cp++;
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			continue;
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		}
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		if (q == &se->s_aliases[sd->maxaliases - 1]) {
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			p = reallocarray(se->s_aliases, sd->maxaliases,
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			    2 * sizeof(char *));
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			if (p == NULL) {
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				serrno = errno;
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				endservent_r(sd);
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				errno = serrno;
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				return (-1);
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			}
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			sd->maxaliases *= 2;
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			q = (char **)p + (q - se->s_aliases);
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			se->s_aliases = sd->aliases = (char **)p;
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		}
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		*q++ = cp;
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		cp = strpbrk(cp, " \t");
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		if (cp != NULL)
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			*cp++ = '\0';
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	}
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	*q = NULL;
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	return (0);
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}
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DEF_WEAK(getservent_r);
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struct servent_data _servent_data;	/* shared with getservby{name,port}.c */
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void
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setservent(int f)
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{
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	setservent_r(f, &_servent_data);
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}
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void
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endservent(void)
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{
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	endservent_r(&_servent_data);
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}
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struct servent *
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getservent(void)
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{
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	static struct servent serv;
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	if (getservent_r(&serv, &_servent_data) != 0)
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		return (NULL);
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	return (&serv);
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}