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/* Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <bits/libc-lock.h>
#include <errno.h>
#include <hesiod.h>
#include <netdb.h>
#include <netinet/in.h>
#include <nss.h>
#include <stdlib.h>
#include <string.h>
/* Hesiod uses a format for service entries that differs from the
traditional format. We therefore declare our own parser. */
#define ENTNAME servent
#define ENTDATA servent_data
struct servent_data {};
#define TRAILING_LIST_MEMBER s_aliases
#define TRAILING_LIST_SEPARATOR_P isspace
#include <nss/nss_files/files-parse.c>
#define ISSEMICOLON(c) ((c) == ';')
LINE_PARSER
("",
(void) entdata;
STRING_FIELD (result->s_name, ISSEMICOLON, 1);
STRING_FIELD (result->s_proto, ISSEMICOLON, 1);
INT_FIELD (result->s_port, ISSEMICOLON, 10, 0, htons);
)
/* Locks the static variables in this file. */
__libc_lock_define_initialized (static, lock);
static void *context = NULL;
static enum nss_status
internal_setservent (void)
{
if (!context)
{
if (hesiod_init (&context) == -1)
return NSS_STATUS_UNAVAIL;
}
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_hesiod_setservent (void)
{
enum nss_status status;
__libc_lock_lock (lock);
status = internal_setservent ();
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_hesiod_endservent (void)
{
__libc_lock_lock (lock);
if (context)
{
hesiod_end (context);
context = NULL;
}
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
static enum nss_status
lookup (const char *name, const char *protocol, struct servent *serv,
char *buffer, size_t buflen, int *errnop)
{
enum nss_status status;
struct parser_data *data = (void *) buffer;
size_t linebuflen;
char **list, **item;
int parse_res;
int found;
status = internal_setservent ();
if (status != NSS_STATUS_SUCCESS)
return status;
list = hesiod_resolve (context, name, "service");
if (list == NULL)
return errno == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL;
linebuflen = buffer + buflen - data->linebuffer;
item = list;
found = 0;
do
{
size_t len = strlen (*item) + 1;
if (linebuflen < len)
{
hesiod_free_list (context, list);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
memcpy (data->linebuffer, *item, len);
parse_res = parse_line (buffer, serv, data, buflen, errnop);
if (parse_res == -1)
{
hesiod_free_list (context, list);
return NSS_STATUS_TRYAGAIN;
}
if (parse_res > 0)
found = protocol == NULL || strcmp (serv->s_proto, protocol) == 0;
++item;
}
while (*item != NULL && !found);
hesiod_free_list (context, list);
return found ? NSS_STATUS_SUCCESS : NSS_STATUS_NOTFOUND;
}
enum nss_status
_nss_hesiod_getservbyname_r (const char *name, const char *protocol,
struct servent *serv,
char *buffer, size_t buflen, int *errnop)
{
enum nss_status status;
__libc_lock_lock (lock);
status = lookup (name, protocol, serv, buffer, buflen, errnop);
__libc_lock_unlock (lock);
return status;
}
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