147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
/* Copyright (C) 1997, 2000, 2002 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <hesiod.h>
|
|
#include <netdb.h>
|
|
#include <netinet/in.h>
|
|
#include <nss.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "nss_hesiod.h"
|
|
|
|
/* Declare a parser for Hesiod protocol entries. Although the format
|
|
of the entries is identical to those in /etc/protocols, here is no
|
|
predefined parser for us to use. */
|
|
|
|
#define ENTNAME protoent
|
|
|
|
struct protoent_data {};
|
|
|
|
#define TRAILING_LIST_MEMBER p_aliases
|
|
#define TRAILING_LIST_SEPARATOR_P isspace
|
|
#include <nss/nss_files/files-parse.c>
|
|
LINE_PARSER
|
|
("#",
|
|
STRING_FIELD (result->p_name, isspace, 1);
|
|
INT_FIELD (result->p_proto, isspace, 1, 10,);
|
|
)
|
|
|
|
enum nss_status
|
|
_nss_hesiod_setprotoent (int stayopen)
|
|
{
|
|
return NSS_STATUS_SUCCESS;
|
|
}
|
|
|
|
enum nss_status
|
|
_nss_hesiod_endprotoent (void)
|
|
{
|
|
return NSS_STATUS_SUCCESS;
|
|
}
|
|
|
|
static enum nss_status
|
|
lookup (const char *name, const char *type, struct protoent *proto,
|
|
char *buffer, size_t buflen, int *errnop)
|
|
{
|
|
struct parser_data *data = (void *) buffer;
|
|
size_t linebuflen;
|
|
void *context;
|
|
char **list, **item;
|
|
int parse_res;
|
|
int found;
|
|
int olderr = errno;
|
|
|
|
context = _nss_hesiod_init ();
|
|
if (context == NULL)
|
|
return NSS_STATUS_UNAVAIL;
|
|
|
|
list = hesiod_resolve (context, name, type);
|
|
if (list == NULL)
|
|
{
|
|
int err = errno;
|
|
hesiod_end (context);
|
|
__set_errno (olderr);
|
|
return err == 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);
|
|
hesiod_end (context);
|
|
*errnop = ERANGE;
|
|
return NSS_STATUS_TRYAGAIN;
|
|
}
|
|
|
|
memcpy (data->linebuffer, *item, len);
|
|
|
|
parse_res = parse_line (buffer, proto, data, buflen, errnop);
|
|
if (parse_res == -1)
|
|
{
|
|
hesiod_free_list (context, list);
|
|
hesiod_end (context);
|
|
return NSS_STATUS_TRYAGAIN;
|
|
}
|
|
|
|
if (parse_res > 0)
|
|
found = 1;
|
|
|
|
++item;
|
|
}
|
|
while (*item != NULL && !found);
|
|
|
|
hesiod_free_list (context, list);
|
|
hesiod_end (context);
|
|
|
|
if (found == 0)
|
|
{
|
|
__set_errno (olderr);
|
|
return NSS_STATUS_NOTFOUND;
|
|
}
|
|
|
|
return NSS_STATUS_SUCCESS;
|
|
}
|
|
|
|
enum nss_status
|
|
_nss_hesiod_getprotobyname_r (const char *name, struct protoent *proto,
|
|
char *buffer, size_t buflen, int *errnop)
|
|
{
|
|
return lookup (name, "protocol", proto, buffer, buflen, errnop);
|
|
}
|
|
|
|
enum nss_status
|
|
_nss_hesiod_getprotobynumber_r (const int protocol, struct protoent *proto,
|
|
char *buffer, size_t buflen, int *errnop)
|
|
{
|
|
char protostr[21];
|
|
|
|
snprintf (protostr, sizeof protostr, "%d", protocol);
|
|
|
|
return lookup (protostr, "protonum", proto, buffer, buflen, errnop);
|
|
}
|