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/* Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 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 <string.h>
#include <rpc/rpc.h>
#include <rpc/auth.h>
#include <rpcsvc/nis.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "nis_intern.h"
static struct timeval TIMEOUT = {25, 0};
static int const MAXTRIES = 3;
static unsigned long
inetstr2int (const char *str)
{
char buffer[strlen (str) + 3];
size_t buflen;
size_t i, j;
buflen = stpcpy (buffer, str) - buffer;
j = 0;
for (i = 0; i < buflen; ++i)
if (buffer[i] == '.')
{
++j;
if (j == 4)
{
buffer[i] = '\0';
break;
}
}
return inet_addr (buffer);
}
static CLIENT *
__nis_dobind (const nis_server *server, u_long flags)
{
struct sockaddr_in clnt_saddr;
int clnt_sock;
size_t i;
CLIENT *client = NULL;
memset (&clnt_saddr, '\0', sizeof clnt_saddr);
clnt_saddr.sin_family = AF_INET;
for (i = 0; i < server->ep.ep_len; i++)
{
if (strcmp (server->ep.ep_val[i].family,"loopback") == 0)
{
if (server->ep.ep_val[i].uaddr[i] == '-')
clnt_saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
else
if (strcmp (server->ep.ep_val[i].proto,"udp") == 0)
{
if ((flags & USE_DGRAM) == USE_DGRAM)
clnt_saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
else
continue;
}
else
if (strcmp (server->ep.ep_val[i].proto,"tcp") == 0)
{
if ((flags & USE_DGRAM) == USE_DGRAM)
continue;
else
clnt_saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
}
}
else
if (strcmp (server->ep.ep_val[i].family,"inet") == 0)
{
if (server->ep.ep_val[i].uaddr[i] == '-')
clnt_saddr.sin_addr.s_addr =
inetstr2int (server->ep.ep_val[i].uaddr);
else
if (strcmp (server->ep.ep_val[i].proto,"udp") == 0)
{
if ((flags & USE_DGRAM) == USE_DGRAM)
clnt_saddr.sin_addr.s_addr =
inetstr2int (server->ep.ep_val[i].uaddr);
else
continue;
}
else
if (strcmp (server->ep.ep_val[i].proto,"tcp") == 0)
{
if ((flags & USE_DGRAM) == USE_DGRAM)
continue;
else
clnt_saddr.sin_addr.s_addr =
inetstr2int (server->ep.ep_val[i].uaddr);
}
}
else
continue;
clnt_sock = RPC_ANYSOCK;
if ((flags & USE_DGRAM) == USE_DGRAM)
client = clntudp_create (&clnt_saddr, NIS_PROG, NIS_VERSION,
TIMEOUT, &clnt_sock);
else
client = clnttcp_create (&clnt_saddr, NIS_PROG, NIS_VERSION,
&clnt_sock, 0, 0);
if (client == NULL)
continue;
if (clnt_call (client, 0, (xdrproc_t) xdr_void, NULL,
(xdrproc_t) xdr_void, NULL, TIMEOUT) != RPC_SUCCESS)
{
clnt_destroy (client);
continue;
}
if ((flags & NO_AUTHINFO) != NO_AUTHINFO)
{
#if defined(HAVE_SECURE_RPC)
if (server->key_type == NIS_PK_DH && getenv ("NO_SECURE_RPC") == NULL)
{
char netname[MAXNETNAMELEN+1];
char *p;
p = stpcpy (netname, "unix.");
strncpy (p, server->name,MAXNETNAMELEN-5);
netname[MAXNETNAMELEN] = '\0';
p = strchr (netname, '.');
*p = '@';
client->cl_auth =
authdes_pk_create (netname, &server->pkey, 300, NULL, NULL);
if (!client->cl_auth)
client->cl_auth = authunix_create_default ();
}
else
#endif
client->cl_auth = authunix_create_default ();
}
return client;
}
return NULL;
}
nis_error
__do_niscall (const nis_server *serv, int serv_len, u_long prog,
xdrproc_t xargs, caddr_t req, xdrproc_t xres, caddr_t resp,
u_long flags)
{
CLIENT *clnt;
directory_obj *dir = NULL;
const nis_server *server;
int try, result;
unsigned int server_len;
if (serv == NULL || serv_len == 0)
{
dir = readColdStartFile ();
if (dir == NULL) /* No /var/nis/NIS_COLD_START -> no NIS+ installed */
return NIS_UNAVAIL;
server = dir->do_servers.do_servers_val;
server_len = dir->do_servers.do_servers_len;
}
else
{
server = serv;
server_len = serv_len;
}
if (((flags & MASTER_ONLY) == MASTER_ONLY) && server_len > 1)
server_len = 1; /* The first entry is the master */
try = 0;
result = NIS_NAMEUNREACHABLE;
while (try < MAXTRIES && result != RPC_SUCCESS)
{
unsigned int i;
if ((flags & HARD_LOOKUP) == 0)
++try;
for (i = 0; i < server_len; i++)
{
if ((clnt = __nis_dobind (&server[i], flags)) == NULL)
continue;
result = clnt_call (clnt, prog, xargs, req, xres, resp, TIMEOUT);
if (result != RPC_SUCCESS)
{
clnt_perror (clnt, "do_niscall: clnt_call");
clnt_destroy (clnt);
result = NIS_RPCERROR;
}
else
clnt_destroy (clnt);
}
}
if (dir != NULL)
nis_free_directory (dir);
return result;
}
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