255 lines
6.8 KiB
C
255 lines
6.8 KiB
C
/*
|
|
* Copyright (c) 1989, 1993, 1995
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*/
|
|
|
|
/*
|
|
* Portions 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(LIBC_SCCS) && !defined(lint)
|
|
static const char rcsid[] = "$Id: lcl_sv.c,v 1.11 1997/12/04 04:57:58 halley Exp $";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/* extern */
|
|
|
|
#include "port_before.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <netinet/in.h>
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <irs.h>
|
|
|
|
#include "port_after.h"
|
|
|
|
#include "irs_p.h"
|
|
#include "lcl_p.h"
|
|
|
|
#define MAXALIASES 35
|
|
|
|
/* Types */
|
|
|
|
struct pvt {
|
|
FILE * fp;
|
|
char line[BUFSIZ+1];
|
|
struct servent serv;
|
|
char * serv_aliases[MAXALIASES];
|
|
};
|
|
|
|
/* Forward */
|
|
|
|
static void sv_close(struct irs_sv*);
|
|
static struct servent * sv_next(struct irs_sv *);
|
|
static struct servent * sv_byname(struct irs_sv *, const char *,
|
|
const char *);
|
|
static struct servent * sv_byport(struct irs_sv *, int, const char *);
|
|
static void sv_rewind(struct irs_sv *);
|
|
static void sv_minimize(struct irs_sv *);
|
|
|
|
/* Portability */
|
|
|
|
#ifndef SEEK_SET
|
|
# define SEEK_SET 0
|
|
#endif
|
|
|
|
/* Public */
|
|
|
|
struct irs_sv *
|
|
irs_lcl_sv(struct irs_acc *this) {
|
|
struct irs_sv *sv;
|
|
struct pvt *pvt;
|
|
|
|
if (!(sv = (struct irs_sv *)malloc(sizeof *sv))) {
|
|
errno = ENOMEM;
|
|
return (NULL);
|
|
}
|
|
memset(sv, 0x5e, sizeof *sv);
|
|
if (!(pvt = (struct pvt *)malloc(sizeof *pvt))) {
|
|
free(sv);
|
|
errno = ENOMEM;
|
|
return (NULL);
|
|
}
|
|
memset(pvt, 0, sizeof *pvt);
|
|
sv->private = pvt;
|
|
sv->close = sv_close;
|
|
sv->next = sv_next;
|
|
sv->byname = sv_byname;
|
|
sv->byport = sv_byport;
|
|
sv->rewind = sv_rewind;
|
|
sv->minimize = sv_minimize;
|
|
return (sv);
|
|
}
|
|
|
|
/* Methods */
|
|
|
|
static void
|
|
sv_close(struct irs_sv *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
|
|
if (pvt->fp)
|
|
fclose(pvt->fp);
|
|
free(pvt);
|
|
free(this);
|
|
}
|
|
|
|
static struct servent *
|
|
sv_byname(struct irs_sv *this, const char *name, const char *proto) {
|
|
register struct servent *p;
|
|
register char **cp;
|
|
|
|
sv_rewind(this);
|
|
while ((p = sv_next(this))) {
|
|
if (strcmp(name, p->s_name) == 0)
|
|
goto gotname;
|
|
for (cp = p->s_aliases; *cp; cp++)
|
|
if (strcmp(name, *cp) == 0)
|
|
goto gotname;
|
|
continue;
|
|
gotname:
|
|
if (proto == NULL || strcmp(p->s_proto, proto) == 0)
|
|
break;
|
|
}
|
|
return (p);
|
|
}
|
|
|
|
static struct servent *
|
|
sv_byport(struct irs_sv *this, int port, const char *proto) {
|
|
register struct servent *p;
|
|
|
|
sv_rewind(this);
|
|
while ((p = sv_next(this))) {
|
|
if (p->s_port != port)
|
|
continue;
|
|
if (proto == NULL || strcmp(p->s_proto, proto) == 0)
|
|
break;
|
|
}
|
|
return (p);
|
|
}
|
|
|
|
static void
|
|
sv_rewind(struct irs_sv *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
|
|
if (pvt->fp) {
|
|
if (fseek(pvt->fp, 0L, SEEK_SET) == 0)
|
|
return;
|
|
(void)fclose(pvt->fp);
|
|
}
|
|
if (!(pvt->fp = fopen(_PATH_SERVICES, "r" )))
|
|
return;
|
|
if (fcntl(fileno(pvt->fp), F_SETFD, 1) < 0) {
|
|
(void)fclose(pvt->fp);
|
|
pvt->fp = NULL;
|
|
}
|
|
}
|
|
|
|
static struct servent *
|
|
sv_next(struct irs_sv *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
char *p;
|
|
register char *cp, **q;
|
|
|
|
if (!pvt->fp)
|
|
sv_rewind(this);
|
|
if (!pvt->fp)
|
|
return (NULL);
|
|
again:
|
|
if ((p = fgets(pvt->line, BUFSIZ, pvt->fp)) == NULL)
|
|
return (NULL);
|
|
if (*p == '#')
|
|
goto again;
|
|
cp = strpbrk(p, "#\n");
|
|
if (cp == NULL)
|
|
goto again;
|
|
*cp = '\0';
|
|
pvt->serv.s_name = p;
|
|
p = strpbrk(p, " \t");
|
|
if (p == NULL)
|
|
goto again;
|
|
*p++ = '\0';
|
|
while (*p == ' ' || *p == '\t')
|
|
p++;
|
|
cp = strpbrk(p, ",/");
|
|
if (cp == NULL)
|
|
goto again;
|
|
*cp++ = '\0';
|
|
pvt->serv.s_port = htons((u_short)atoi(p));
|
|
pvt->serv.s_proto = cp;
|
|
q = pvt->serv.s_aliases = pvt->serv_aliases;
|
|
cp = strpbrk(cp, " \t");
|
|
if (cp != NULL)
|
|
*cp++ = '\0';
|
|
while (cp && *cp) {
|
|
if (*cp == ' ' || *cp == '\t') {
|
|
cp++;
|
|
continue;
|
|
}
|
|
if (q < &pvt->serv_aliases[MAXALIASES - 1])
|
|
*q++ = cp;
|
|
cp = strpbrk(cp, " \t");
|
|
if (cp != NULL)
|
|
*cp++ = '\0';
|
|
}
|
|
*q = NULL;
|
|
return (&pvt->serv);
|
|
}
|
|
|
|
static void
|
|
sv_minimize(struct irs_sv *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
|
|
if (pvt->fp != NULL) {
|
|
(void)fclose(pvt->fp);
|
|
pvt->fp = NULL;
|
|
}
|
|
}
|