minix/lib/nbsd_libc/net/getprotoent_r.c
Gianluca Guida b6cbf7203b Import unmodified NetBSD libc in trunk
This patch imports the unmodified current version of NetBSD libc.
The NetBSD includes are in /nbsd_include, while the libc code itself is 
split between lib/nbsd_libc and common/lib/libc.
2011-02-14 19:36:03 +00:00

153 lines
4 KiB
C

/* $NetBSD: getprotoent_r.c,v 1.5 2005/04/18 19:39:45 kleink Exp $ */
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)getprotoent.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: getprotoent_r.c,v 1.5 2005/04/18 19:39:45 kleink Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <netdb.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "protoent.h"
#ifdef __weak_alias
__weak_alias(endprotoent_r,_endprotoent_r)
__weak_alias(getprotoent_r,_getprotoent_r)
__weak_alias(setprotoent_r,_setprotoent_r)
#endif
void
setprotoent_r(int f, struct protoent_data *pd)
{
if (pd->fp == NULL)
pd->fp = fopen(_PATH_PROTOCOLS, "r");
else
rewind(pd->fp);
pd->stayopen |= f;
}
void
endprotoent_r(struct protoent_data *pd)
{
if (pd->fp) {
(void)fclose(pd->fp);
pd->fp = NULL;
}
if (pd->aliases) {
free(pd->aliases);
pd->aliases = NULL;
pd->maxaliases = 0;
}
if (pd->line) {
free(pd->line);
pd->line = NULL;
}
pd->stayopen = 0;
}
struct protoent *
getprotoent_r(struct protoent *pr, struct protoent_data *pd)
{
char *p, *cp, **q;
size_t i = 0;
int oerrno;
if (pd->fp == NULL && (pd->fp = fopen(_PATH_PROTOCOLS, "r")) == NULL)
return NULL;
for (;;) {
if (pd->line)
free(pd->line);
pd->line = fparseln(pd->fp, NULL, NULL, NULL,
FPARSELN_UNESCALL);
if (pd->line == NULL)
return NULL;
pr->p_name = p = pd->line;
cp = strpbrk(p, " \t");
if (cp == NULL)
continue;
*cp++ = '\0';
while (*cp == ' ' || *cp == '\t')
cp++;
p = strpbrk(cp, " \t");
if (p != NULL)
*p++ = '\0';
pr->p_proto = atoi(cp);
if (pd->aliases == NULL) {
pd->maxaliases = 10;
pd->aliases = malloc(pd->maxaliases * sizeof(char *));
if (pd->aliases == NULL) {
oerrno = errno;
endprotoent_r(pd);
errno = oerrno;
return NULL;
}
}
q = pr->p_aliases = pd->aliases;
if (p != NULL) {
cp = p;
while (cp && *cp) {
if (*cp == ' ' || *cp == '\t') {
cp++;
continue;
}
if (i == pd->maxaliases - 2) {
pd->maxaliases *= 2;
q = realloc(q,
pd->maxaliases * sizeof(char *));
if (q == NULL) {
oerrno = errno;
endprotoent_r(pd);
errno = oerrno;
return NULL;
}
pr->p_aliases = pd->aliases = q;
}
q[i++] = cp;
cp = strpbrk(cp, " \t");
if (cp != NULL)
*cp++ = '\0';
}
}
q[i] = NULL;
return pr;
}
}