/*

* Copyright (c) 1983 Regents of the University of California.

* All rights reserved.

*

* Redistribution and use in source and binary forms are permitted

* provided that: (1) source distributions retain this entire copyright

* notice and comment, and (2) distributions including binaries display

* the following acknowledgement: ``This product includes software

* developed by the University of California, Berkeley and its contributors''

* in the documentation or other materials provided with the distribution

* and in all advertising materials mentioning features or use of this

* software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR

* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

*/

#if defined(LIBC_SCCS) && !defined(lint)

static char sccsid[] = "@(#)getprotoent.c 5.7 (Berkeley) 6/1/90";

#endif /* LIBC_SCCS and not lint */

#include <ctype.h>

#include <stdio.h>

#include <stdlib.h>

#ifdef _MINIX

#include <net/gen/netdb.h>

static char *any _ARGS(( char *cp, char *match ));

#endif

#define MAXALIASES 35

static FILE *protof = NULL;

static char line[BUFSIZ+1];

static struct protoent proto;

static char *proto_aliases[MAXALIASES];

int _proto_stayopen;

void

setprotoent(f)

int f;

{

if (protof == NULL)

protof = fopen(_PATH_PROTOCOLS, "r" );

else

rewind(protof);

_proto_stayopen |= f;

}

void

endprotoent()

{

if (protof) {

fclose(protof);

protof = NULL;

}

_proto_stayopen = 0;

}

struct protoent *

getprotoent()

{

char *p;

register char *cp, **q;

if (protof == NULL && (protof = fopen(_PATH_PROTOCOLS, "r" )) == NULL)

return (NULL);

again:

if ((p = fgets(line, BUFSIZ, protof)) == NULL)

return (NULL);

if (*p == '#')

goto again;

cp = any(p, "#\n");

if (cp == NULL)

goto again;

*cp = '\0';

proto.p_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';

proto.p_proto = atoi(cp);

q = proto.p_aliases = proto_aliases;

if (p != NULL) {

cp = p;

while (cp && *cp) {

if (*cp == ' ' || *cp == '\t') {

cp++;

continue;

}

if (q < &proto_aliases[MAXALIASES - 1])

*q++ = cp;

cp = any(cp, " \t");

if (cp != NULL)

*cp++ = '\0';

}

}

*q = NULL;

return (&proto);

}

static char *

any(cp, match)

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);

}