121 lines
2.6 KiB
C
121 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 1996 by Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
|
|
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
|
|
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
|
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
|
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
|
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#if !defined(LINT) && !defined(CODECENTER)
|
|
static char rcsid[] = "$Id: getprotoent.c,v 1.9 1997/12/04 04:57:53 halley Exp $";
|
|
#endif
|
|
|
|
/* Imports */
|
|
|
|
#include "port_before.h"
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
|
|
#include <irs.h>
|
|
|
|
#include "port_after.h"
|
|
|
|
#include "irs_data.h"
|
|
|
|
/* Forward */
|
|
|
|
static struct irs_pr * init(void);
|
|
|
|
/* Public */
|
|
|
|
struct protoent *
|
|
getprotoent() {
|
|
struct irs_pr *pr = init();
|
|
|
|
if (!pr)
|
|
return (NULL);
|
|
net_data.pr_last = (*pr->next)(pr);
|
|
return (net_data.pr_last);
|
|
}
|
|
|
|
struct protoent *
|
|
getprotobyname(const char *name) {
|
|
struct irs_pr *pr = init();
|
|
char **pap;
|
|
|
|
if (!pr)
|
|
return (NULL);
|
|
if (net_data.pr_stayopen && net_data.pr_last) {
|
|
if (!strcmp(net_data.pr_last->p_name, name))
|
|
return (net_data.pr_last);
|
|
for (pap = net_data.pr_last->p_aliases; pap && *pap; pap++)
|
|
if (!strcmp(name, *pap))
|
|
return (net_data.pr_last);
|
|
}
|
|
net_data.pr_last = (*pr->byname)(pr, name);
|
|
if (!net_data.pr_stayopen)
|
|
endprotoent();
|
|
return (net_data.pr_last);
|
|
}
|
|
|
|
struct protoent *
|
|
getprotobynumber(int proto) {
|
|
struct irs_pr *pr = init();
|
|
|
|
if (!pr)
|
|
return (NULL);
|
|
if (net_data.pr_stayopen && net_data.pr_last)
|
|
if (net_data.pr_last->p_proto == proto)
|
|
return (net_data.pr_last);
|
|
net_data.pr_last = (*pr->bynumber)(pr, proto);
|
|
if (!net_data.pr_stayopen)
|
|
endprotoent();
|
|
return (net_data.pr_last);
|
|
}
|
|
|
|
void
|
|
setprotoent(int stayopen) {
|
|
struct irs_pr *pr = init();
|
|
|
|
if (!pr)
|
|
return;
|
|
(*pr->rewind)(pr);
|
|
net_data.pr_stayopen = (stayopen != 0);
|
|
}
|
|
|
|
void
|
|
endprotoent() {
|
|
struct irs_pr *pr = init();
|
|
|
|
if (pr != NULL)
|
|
(*pr->minimize)(pr);
|
|
}
|
|
|
|
/* Private */
|
|
|
|
static struct irs_pr *
|
|
init() {
|
|
if (!net_data_init())
|
|
goto error;
|
|
if (!net_data.pr)
|
|
net_data.pr = (*net_data.irs->pr_map)(net_data.irs);
|
|
if (!net_data.pr) {
|
|
error:
|
|
errno = EIO;
|
|
return (NULL);
|
|
}
|
|
return (net_data.pr);
|
|
}
|