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/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#define __FORCE_GLIBC
#include <features.h>
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <unistd.h>
libc_hidden_proto(fopen)
libc_hidden_proto(fclose)
libc_hidden_proto(inet_network)
libc_hidden_proto(rewind)
libc_hidden_proto(fgets)
libc_hidden_proto(abort)
libc_hidden_proto(__uc_malloc)
#include <bits/uClibc_mutex.h>
__UCLIBC_MUTEX_STATIC(mylock, PTHREAD_MUTEX_INITIALIZER);
static const char NETDB[] = _PATH_NETWORKS;
static FILE *netf = NULL;
smallint _net_stayopen attribute_hidden;
libc_hidden_proto(setnetent)
void setnetent(int f)
{
__UCLIBC_MUTEX_LOCK(mylock);
if (netf == NULL)
netf = fopen(NETDB, "r" );
else
rewind(netf);
if (f) _net_stayopen = 1;
__UCLIBC_MUTEX_UNLOCK(mylock);
return;
}
libc_hidden_def(setnetent)
libc_hidden_proto(endnetent)
void endnetent(void)
{
__UCLIBC_MUTEX_LOCK(mylock);
if (netf) {
fclose(netf);
netf = NULL;
}
_net_stayopen = 0;
__UCLIBC_MUTEX_UNLOCK(mylock);
}
libc_hidden_def(endnetent)
static char * any(register char *cp, char *match)
{
register char *mp, c;
while ((c = *cp)) {
for (mp = match; *mp; mp++)
if (*mp == c)
return (cp);
cp++;
}
return ((char *)0);
}
#define MAXALIASES 35
static struct {
char *line;
struct netent net;
char *net_aliases[MAXALIASES];
} *sp;
#define line (sp->line)
#define net (sp->net)
#define net_aliases (sp->net_aliases)
#define INIT_SP() { \
if (!sp) { \
sp = __uc_malloc(sizeof(*sp)); \
line = NULL; \
} \
}
libc_hidden_proto(getnetent)
struct netent *getnetent(void)
{
char *p;
register char *cp, **q;
struct netent *rv = NULL;
INIT_SP();
__UCLIBC_MUTEX_LOCK(mylock);
if (netf == NULL && (netf = fopen(NETDB, "r" )) == NULL) {
goto DONE;
}
again:
if (!line) {
line = __uc_malloc(BUFSIZ + 1);
}
p = fgets(line, BUFSIZ, netf);
if (p == NULL) {
goto DONE;
}
if (*p == '#')
goto again;
cp = any(p, "#\n");
if (cp == NULL)
goto again;
*cp = '\0';
net.n_name = p;
cp = any(p, " \t");
if (cp == NULL)
goto again;
*cp++ = '\0';
while (*cp == ' ' || *cp == '\t')
cp++;
p = any(cp, " \t");
if (p != NULL)
*p++ = '\0';
net.n_net = inet_network(cp);
net.n_addrtype = AF_INET;
q = net.n_aliases = net_aliases;
if (p != NULL)
cp = p;
while (cp && *cp) {
if (*cp == ' ' || *cp == '\t') {
cp++;
continue;
}
if (q < &net_aliases[MAXALIASES - 1])
*q++ = cp;
cp = any(cp, " \t");
if (cp != NULL)
*cp++ = '\0';
}
*q = NULL;
rv = &net;
DONE:
__UCLIBC_MUTEX_UNLOCK(mylock);
return rv;
}
libc_hidden_def(getnetent)
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