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glibc/nis/ypclnt.c

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/* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
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 <errno.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <libintl.h>
#include <rpc/rpc.h>
#include <rpcsvc/nis.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include <rpcsvc/ypupd.h>
#include <sys/uio.h>
#include <bits/libc-lock.h>
/* This should only be defined on systems with a BSD compatible ypbind */
#ifndef BINDINGDIR
# define BINDINGDIR "/var/yp/binding"
#endif
struct dom_binding
{
struct dom_binding *dom_pnext;
char dom_domain[YPMAXDOMAIN + 1];
struct sockaddr_in dom_server_addr;
int dom_socket;
CLIENT *dom_client;
long int dom_vers;
};
typedef struct dom_binding dom_binding;
static struct timeval RPCTIMEOUT = {25, 0};
static struct timeval UDPTIMEOUT = {5, 0};
static int const MAXTRIES = 2;
static char __ypdomainname[NIS_MAXNAMELEN + 1] = "\0";
__libc_lock_define_initialized (static, ypbindlist_lock)
static dom_binding *__ypbindlist = NULL;
static int
__yp_bind (const char *domain, dom_binding **ypdb)
{
struct sockaddr_in clnt_saddr;
struct ypbind_resp ypbr;
dom_binding *ysd = NULL;
int clnt_sock;
CLIENT *client;
int is_new = 0;
int try;
if (domain == NULL || domain[0] == '\0')
return YPERR_BADARGS;
if (ypdb != NULL)
{
ysd = *ypdb;
while (ysd != NULL)
{
if (strcmp (domain, ysd->dom_domain) == 0)
break;
ysd = ysd->dom_pnext;
}
}
if (ysd == NULL)
{
is_new = 1;
ysd = (dom_binding *) calloc (1, sizeof *ysd);
ysd->dom_socket = -1;
ysd->dom_vers = -1;
}
try = 0;
do
{
++try;
if (try > MAXTRIES)
{
if (is_new)
free (ysd);
return YPERR_YPBIND;
}
#if USE_BINDINGDIR
if (ysd->dom_vers < 1 && try == 1) /* Try binding dir only first time */
{
char path[sizeof (BINDINGDIR) - 1 + strlen (domain) + 10];
struct iovec vec[2];
unsigned short port;
int fd;
sprintf (path, "%s/%s.%d", BINDINGDIR, domain, YPBINDVERS);
fd = open (path, O_RDONLY);
if (fd >= 0)
{
/* We have a binding file and could save a RPC call */
vec[0].iov_base = &port;
vec[0].iov_len = sizeof (port);
vec[1].iov_base = &ypbr;
vec[1].iov_len = sizeof (ypbr);
if (readv (fd, vec, 2) == sizeof (port) + sizeof (ypbr))
{
ysd->dom_server_addr.sin_family = AF_INET;
memcpy (&ysd->dom_server_addr.sin_port,
ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port,
sizeof (ysd->dom_server_addr.sin_port));
memcpy (&ysd->dom_server_addr.sin_addr.s_addr,
ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr,
sizeof (ysd->dom_server_addr.sin_addr.s_addr));
ysd->dom_vers = YPVERS;
strncpy (ysd->dom_domain, domain, YPMAXDOMAIN);
ysd->dom_domain[YPMAXDOMAIN] = '\0';
}
close (fd);
}
}
#endif /* USE_BINDINGDIR */
if (ysd->dom_vers == -1)
{
if (ysd->dom_client)
{
clnt_destroy (ysd->dom_client);
ysd->dom_client = NULL;
ysd->dom_socket = -1;
}
memset (&clnt_saddr, '\0', sizeof clnt_saddr);
clnt_saddr.sin_family = AF_INET;
clnt_saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
clnt_sock = RPC_ANYSOCK;
client = clnttcp_create (&clnt_saddr, YPBINDPROG, YPBINDVERS,
&clnt_sock, 0, 0);
if (client == NULL)
{
if (is_new)
free (ysd);
return YPERR_YPBIND;
}
/*
** Check the port number -- should be < IPPORT_RESERVED.
** If not, it's possible someone has registered a bogus
** ypbind with the portmapper and is trying to trick us.
*/
if (ntohs (clnt_saddr.sin_port) >= IPPORT_RESERVED)
{
clnt_destroy (client);
if (is_new)
free (ysd);
return YPERR_YPBIND;
}
if (clnt_call (client, YPBINDPROC_DOMAIN,
(xdrproc_t) xdr_domainname, (caddr_t) &domain,
(xdrproc_t) xdr_ypbind_resp,
(caddr_t) &ypbr, RPCTIMEOUT) != RPC_SUCCESS)
{
clnt_destroy (client);
if (is_new)
free (ysd);
return YPERR_YPBIND;
}
clnt_destroy (client);
if (ypbr.ypbind_status != YPBIND_SUCC_VAL)
{
fprintf (stderr, _("YPBINDPROC_DOMAIN: %s\n"),
ypbinderr_string (ypbr.ypbind_resp_u.ypbind_error));
if (is_new)
free (ysd);
return YPERR_DOMAIN;
}
memset (&ysd->dom_server_addr, '\0', sizeof ysd->dom_server_addr);
ysd->dom_server_addr.sin_family = AF_INET;
memcpy (&ysd->dom_server_addr.sin_port,
ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port,
sizeof (ysd->dom_server_addr.sin_port));
memcpy (&ysd->dom_server_addr.sin_addr.s_addr,
ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr,
sizeof (ysd->dom_server_addr.sin_addr.s_addr));
ysd->dom_vers = YPVERS;
strncpy (ysd->dom_domain, domain, YPMAXDOMAIN);
ysd->dom_domain[YPMAXDOMAIN] = '\0';
}
ysd->dom_socket = RPC_ANYSOCK;
ysd->dom_client = clntudp_create (&ysd->dom_server_addr, YPPROG, YPVERS,
UDPTIMEOUT, &ysd->dom_socket);
if (ysd->dom_client == NULL)
ysd->dom_vers = -1;
}
while (ysd->dom_client == NULL);
/* If the program exists, close the socket */
if (fcntl (ysd->dom_socket, F_SETFD, 1) == -1)
perror ("fcntl: F_SETFD");
if (is_new && ypdb != NULL)
{
ysd->dom_pnext = *ypdb;
*ypdb = ysd;
}
return YPERR_SUCCESS;
}
static void
__yp_unbind (dom_binding *ydb)
{
clnt_destroy (ydb->dom_client);
ydb->dom_client = NULL;
ydb->dom_socket = -1;
}
static int
do_ypcall (const char *domain, u_long prog, xdrproc_t xargs,
caddr_t req, xdrproc_t xres, caddr_t resp)
{
dom_binding *ydb = NULL;
bool_t use_ypbindlist = FALSE;
int try, status;
enum clnt_stat result;
int saved_errno = errno;
try = 0;
status = YPERR_YPERR;
__libc_lock_lock (ypbindlist_lock);
if (__ypbindlist != NULL)
{
ydb = __ypbindlist;
while (ydb != NULL)
{
if (strcmp (domain, ydb->dom_domain) == 0)
break;
ydb = ydb->dom_pnext;
}
if (ydb != NULL)
use_ypbindlist = TRUE;
else
__libc_lock_unlock (ypbindlist_lock);
}
else
__libc_lock_unlock (ypbindlist_lock);
while (try < MAXTRIES && status != YPERR_SUCCESS)
{
if (__yp_bind (domain, &ydb) != 0)
{
if (use_ypbindlist)
__libc_lock_unlock (ypbindlist_lock);
__set_errno (saved_errno);
return YPERR_DOMAIN;
}
result = clnt_call (ydb->dom_client, prog,
xargs, req, xres, resp, RPCTIMEOUT);
if (result != RPC_SUCCESS)
{
clnt_perror (ydb->dom_client, "do_ypcall: clnt_call");
ydb->dom_vers = -1;
if (!use_ypbindlist)
{
__yp_unbind (ydb);
free (ydb);
ydb = NULL;
}
status = YPERR_RPC;
}
else
status = YPERR_SUCCESS;
try++;
}
if (use_ypbindlist)
{
__libc_lock_unlock (ypbindlist_lock);
use_ypbindlist = FALSE;
}
else
if (ydb != NULL)
{
__yp_unbind (ydb);
free (ydb);
ydb = NULL;
}
__set_errno (saved_errno);
return status;
}
int
yp_bind (const char *indomain)
{
int status;
__libc_lock_lock (ypbindlist_lock);
status = __yp_bind (indomain, &__ypbindlist);
__libc_lock_unlock (ypbindlist_lock);
return status;
}
void
yp_unbind (const char *indomain)
{
dom_binding *ydbptr, *ydbptr2;
__libc_lock_lock (ypbindlist_lock);
ydbptr2 = NULL;
ydbptr = __ypbindlist;
while (ydbptr != NULL)
{
if (strcmp (ydbptr->dom_domain, indomain) == 0)
{
dom_binding *work;
work = ydbptr;
if (ydbptr2 == NULL)
__ypbindlist = __ypbindlist->dom_pnext;
else
ydbptr2 = ydbptr->dom_pnext;
__yp_unbind (work);
free (work);
break;
}
ydbptr2 = ydbptr;
ydbptr = ydbptr->dom_pnext;
}
__libc_lock_unlock (ypbindlist_lock);
return;
}
__libc_lock_define_initialized (static, domainname_lock)
int
yp_get_default_domain (char **outdomain)
{
int result = YPERR_SUCCESS;;
*outdomain = NULL;
__libc_lock_lock (domainname_lock);
if (__ypdomainname[0] == '\0')
{
if (getdomainname (__ypdomainname, NIS_MAXNAMELEN))
result = YPERR_NODOM;
else if (strcmp (__ypdomainname, "(none)") == 0)
{
/* If domainname is not set, some Systems will return "(none)" */
__ypdomainname[0] = '\0';
result = YPERR_NODOM;
}
else
*outdomain = __ypdomainname;
}
else
*outdomain = __ypdomainname;
__libc_lock_unlock (domainname_lock);
return result;
}
int
__yp_check (char **domain)
{
char *unused;
if (__ypdomainname[0] == '\0')
if (yp_get_default_domain (&unused))
return 0;
if (domain)
*domain = __ypdomainname;
if (yp_bind (__ypdomainname) == 0)
return 1;
return 0;
}
int
yp_match (const char *indomain, const char *inmap, const char *inkey,
const int inkeylen, char **outval, int *outvallen)
{
ypreq_key req;
ypresp_val resp;
enum clnt_stat result;
if (indomain == NULL || indomain[0] == '\0' ||
inmap == NULL || inmap[0] == '\0' ||
inkey == NULL || inkey[0] == '\0' || inkeylen <= 0)
return YPERR_BADARGS;
req.domain = (char *) indomain;
req.map = (char *) inmap;
req.key.keydat_val = (char *) inkey;
req.key.keydat_len = inkeylen;
*outval = NULL;
*outvallen = 0;
memset (&resp, '\0', sizeof (resp));
result = do_ypcall (indomain, YPPROC_MATCH, (xdrproc_t) xdr_ypreq_key,
(caddr_t) & req, (xdrproc_t) xdr_ypresp_val,
(caddr_t) & resp);
if (result != YPERR_SUCCESS)
return result;
if (resp.stat != YP_TRUE)
return ypprot_err (resp.stat);
*outvallen = resp.val.valdat_len;
*outval = malloc (*outvallen + 1);
memcpy (*outval, resp.val.valdat_val, *outvallen);
(*outval)[*outvallen] = '\0';
xdr_free ((xdrproc_t) xdr_ypresp_val, (char *) &resp);
return YPERR_SUCCESS;
}
int
yp_first (const char *indomain, const char *inmap, char **outkey,
int *outkeylen, char **outval, int *outvallen)
{
ypreq_nokey req;
ypresp_key_val resp;
enum clnt_stat result;
if (indomain == NULL || indomain[0] == '\0' ||
inmap == NULL || inmap[0] == '\0')
return YPERR_BADARGS;
req.domain = (char *) indomain;
req.map = (char *) inmap;
*outkey = *outval = NULL;
*outkeylen = *outvallen = 0;
memset (&resp, '\0', sizeof (resp));
result = do_ypcall (indomain, YPPROC_FIRST, (xdrproc_t) xdr_ypreq_nokey,
(caddr_t) & req, (xdrproc_t) xdr_ypresp_key_val,
(caddr_t) & resp);
if (result != RPC_SUCCESS)
return YPERR_RPC;
if (resp.stat != YP_TRUE)
return ypprot_err (resp.stat);
*outkeylen = resp.key.keydat_len;
*outkey = malloc (*outkeylen + 1);
memcpy (*outkey, resp.key.keydat_val, *outkeylen);
(*outkey)[*outkeylen] = '\0';
*outvallen = resp.val.valdat_len;
*outval = malloc (*outvallen + 1);
memcpy (*outval, resp.val.valdat_val, *outvallen);
(*outval)[*outvallen] = '\0';
xdr_free ((xdrproc_t) xdr_ypresp_key_val, (char *) &resp);
return YPERR_SUCCESS;
}
int
yp_next (const char *indomain, const char *inmap, const char *inkey,
const int inkeylen, char **outkey, int *outkeylen, char **outval,
int *outvallen)
{
ypreq_key req;
ypresp_key_val resp;
enum clnt_stat result;
if (indomain == NULL || indomain[0] == '\0' ||
inmap == NULL || inmap[0] == '\0' ||
inkeylen <= 0 || inkey == NULL || inkey[0] == '\0')
return YPERR_BADARGS;
req.domain = (char *) indomain;
req.map = (char *) inmap;
req.key.keydat_val = (char *) inkey;
req.key.keydat_len = inkeylen;
*outkey = *outval = NULL;
*outkeylen = *outvallen = 0;
memset (&resp, '\0', sizeof (resp));
result = do_ypcall (indomain, YPPROC_NEXT, (xdrproc_t) xdr_ypreq_key,
(caddr_t) & req, (xdrproc_t) xdr_ypresp_key_val,
(caddr_t) & resp);
if (result != YPERR_SUCCESS)
return result;
if (resp.stat != YP_TRUE)
return ypprot_err (resp.stat);
*outkeylen = resp.key.keydat_len;
*outkey = malloc (*outkeylen + 1);
memcpy (*outkey, resp.key.keydat_val, *outkeylen);
(*outkey)[*outkeylen] = '\0';
*outvallen = resp.val.valdat_len;
*outval = malloc (*outvallen + 1);
memcpy (*outval, resp.val.valdat_val, *outvallen);
(*outval)[*outvallen] = '\0';
xdr_free ((xdrproc_t) xdr_ypresp_key_val, (char *) &resp);
return YPERR_SUCCESS;
}
int
yp_master (const char *indomain, const char *inmap, char **outname)
{
ypreq_nokey req;
ypresp_master resp;
enum clnt_stat result;
if (indomain == NULL || indomain[0] == '\0' ||
inmap == NULL || inmap[0] == '\0')
return YPERR_BADARGS;
req.domain = (char *) indomain;
req.map = (char *) inmap;
memset (&resp, '\0', sizeof (ypresp_master));
result = do_ypcall (indomain, YPPROC_MASTER, (xdrproc_t) xdr_ypreq_nokey,
(caddr_t) & req, (xdrproc_t) xdr_ypresp_master, (caddr_t) & resp);
if (result != YPERR_SUCCESS)
return result;
if (resp.stat != YP_TRUE)
return ypprot_err (resp.stat);
*outname = strdup (resp.peer);
xdr_free ((xdrproc_t) xdr_ypresp_master, (char *) &resp);
return *outname == NULL ? YPERR_YPERR : YPERR_SUCCESS;
}
int
yp_order (const char *indomain, const char *inmap, unsigned int *outorder)
{
struct ypreq_nokey req;
struct ypresp_order resp;
enum clnt_stat result;
if (indomain == NULL || indomain[0] == '\0' ||
inmap == NULL || inmap == '\0')
return YPERR_BADARGS;
req.domain = (char *) indomain;
req.map = (char *) inmap;
memset (&resp, '\0', sizeof (resp));
result = do_ypcall (indomain, YPPROC_ORDER, (xdrproc_t) xdr_ypreq_nokey,
(caddr_t) & req, (xdrproc_t) xdr_ypresp_order, (caddr_t) & resp);
if (result != YPERR_SUCCESS)
return result;
if (resp.stat != YP_TRUE)
return ypprot_err (resp.stat);
*outorder = resp.ordernum;
xdr_free ((xdrproc_t) xdr_ypresp_order, (char *) &resp);
return YPERR_SUCCESS;
}
static void *ypall_data;
static int (*ypall_foreach) __P ((int status, char *key, int keylen,
char *val, int vallen, char *data));
static bool_t
__xdr_ypresp_all (XDR *xdrs, u_long *objp)
{
while (1)
{
struct ypresp_all resp;
memset (&resp, '\0', sizeof (struct ypresp_all));
if (!xdr_ypresp_all (xdrs, &resp))
{
xdr_free ((xdrproc_t) xdr_ypresp_all, (char *) &resp);
*objp = YP_YPERR;
return FALSE;
}
if (resp.more == 0)
{
xdr_free ((xdrproc_t) xdr_ypresp_all, (char *) &resp);
*objp = YP_NOMORE;
return TRUE;
}
switch (resp.ypresp_all_u.val.stat)
{
case YP_TRUE:
{
char key[resp.ypresp_all_u.val.key.keydat_len + 1];
char val[resp.ypresp_all_u.val.val.valdat_len + 1];
int keylen = resp.ypresp_all_u.val.key.keydat_len;
int vallen = resp.ypresp_all_u.val.val.valdat_len;
*objp = YP_TRUE;
memcpy (key, resp.ypresp_all_u.val.key.keydat_val, keylen);
key[keylen] = '\0';
memcpy (val, resp.ypresp_all_u.val.val.valdat_val, vallen);
val[vallen] = '\0';
xdr_free ((xdrproc_t) xdr_ypresp_all, (char *) &resp);
if ((*ypall_foreach) (*objp, key, keylen,
val, vallen, ypall_data))
return TRUE;
}
break;
case YP_NOMORE:
*objp = YP_NOMORE;
xdr_free ((xdrproc_t) xdr_ypresp_all, (char *) &resp);
return TRUE;
break;
default:
*objp = resp.ypresp_all_u.val.stat;
xdr_free ((xdrproc_t) xdr_ypresp_all, (char *) &resp);
return TRUE;
}
}
}
int
yp_all (const char *indomain, const char *inmap,
const struct ypall_callback *incallback)
{
struct ypreq_nokey req;
dom_binding *ydb = NULL;
int try, res;
enum clnt_stat result;
struct sockaddr_in clnt_sin;
CLIENT *clnt;
unsigned long status;
int clnt_sock;
int saved_errno = errno;
if (indomain == NULL || indomain[0] == '\0' ||
inmap == NULL || inmap == '\0')
return YPERR_BADARGS;
try = 0;
res = YPERR_YPERR;
while (try < MAXTRIES && res != YPERR_SUCCESS)
{
if (__yp_bind (indomain, &ydb) != 0)
{
__set_errno (saved_errno);
return YPERR_DOMAIN;
}
/* YPPROC_ALL get its own TCP channel to ypserv. Therefore we
close the socket opened by the __yp_bind call. */
close (ydb->dom_socket);
clnt_sock = RPC_ANYSOCK;
clnt_sin = ydb->dom_server_addr;
clnt_sin.sin_port = 0;
clnt = clnttcp_create (&clnt_sin, YPPROG, YPVERS, &clnt_sock, 0, 0);
if (clnt == NULL)
{
__yp_unbind (ydb);
__set_errno (saved_errno);
return YPERR_PMAP;
}
req.domain = (char *) indomain;
req.map = (char *) inmap;
ypall_foreach = incallback->foreach;
ypall_data = (void *) incallback->data;
result = clnt_call (clnt, YPPROC_ALL, (xdrproc_t) xdr_ypreq_nokey,
(caddr_t) &req, (xdrproc_t) __xdr_ypresp_all,
(caddr_t) &status, RPCTIMEOUT);
if (result != RPC_SUCCESS)
{
clnt_perror (clnt, "yp_all: clnt_call");
res = YPERR_RPC;
}
else
res = YPERR_SUCCESS;
__yp_unbind (ydb);
clnt_destroy (clnt);
if (status != YP_NOMORE)
{
__set_errno (saved_errno);
return ypprot_err (status);
}
++try;
}
__set_errno (saved_errno);
return res;
}
int
yp_maplist (const char *indomain, struct ypmaplist **outmaplist)
{
struct ypresp_maplist resp;
enum clnt_stat result;
if (indomain == NULL || indomain[0] == '\0')
return YPERR_BADARGS;
memset (&resp, '\0', sizeof (resp));
result = do_ypcall (indomain, YPPROC_MAPLIST, (xdrproc_t) xdr_domainname,
(caddr_t) & indomain, (xdrproc_t) xdr_ypresp_maplist, (caddr_t) & resp);
if (result != YPERR_SUCCESS)
return result;
if (resp.stat != YP_TRUE)
return ypprot_err (resp.stat);
*outmaplist = resp.maps;
/* We give the list not free, this will be done by ypserv
xdr_free((xdrproc_t)xdr_ypresp_maplist, (char *)&resp); */
return YPERR_SUCCESS;
}
const char *
yperr_string (const int error)
{
switch (error)
{
case YPERR_SUCCESS:
return _("Success");
case YPERR_BADARGS:
return _("Request arguments bad");
case YPERR_RPC:
return _("RPC failure on NIS operation");
case YPERR_DOMAIN:
return _("Can't bind to server which serves this domain");
case YPERR_MAP:
return _("No such map in server's domain");
case YPERR_KEY:
return _("No such key in map");
case YPERR_YPERR:
return _("Internal NIS error");
case YPERR_RESRC:
return _("Local resource allocation failure");
case YPERR_NOMORE:
return _("No more records in map database");
case YPERR_PMAP:
return _("Can't communicate with portmapper");
case YPERR_YPBIND:
return _("Can't communicate with ypbind");
case YPERR_YPSERV:
return _("Can't communicate with ypserv");
case YPERR_NODOM:
return _("Local domain name not set");
case YPERR_BADDB:
return _("NIS map database is bad");
case YPERR_VERS:
return _("NIS client/server version mismatch - can't supply service");
case YPERR_ACCESS:
return _("Permission denied");
case YPERR_BUSY:
return _("Database is busy");
}
return _("Unknown NIS error code");
}
int
ypprot_err (const int code)
{
switch (code)
{
case YP_TRUE:
return YPERR_SUCCESS;
case YP_NOMORE:
return YPERR_NOMORE;
case YP_FALSE:
return YPERR_YPERR;
case YP_NOMAP:
return YPERR_MAP;
case YP_NODOM:
return YPERR_DOMAIN;
case YP_NOKEY:
return YPERR_KEY;
case YP_BADOP:
return YPERR_YPERR;
case YP_BADDB:
return YPERR_BADDB;
case YP_YPERR:
return YPERR_YPERR;
case YP_BADARGS:
return YPERR_BADARGS;
case YP_VERS:
return YPERR_VERS;
}
return YPERR_YPERR;
}
const char *
ypbinderr_string (const int error)
{
switch (error)
{
case 0:
return _("Success");
case YPBIND_ERR_ERR:
return _("Internal ypbind error");
case YPBIND_ERR_NOSERV:
return _("Domain not bound");
case YPBIND_ERR_RESC:
return _("System resource allocation failure");
default:
return _("Unknown ypbind error");
}
}
#define WINDOW 60
int
yp_update (char *domain, char *map, unsigned ypop,
char *key, int keylen, char *data, int datalen)
{
union
{
ypupdate_args update_args;
ypdelete_args delete_args;
}
args;
xdrproc_t xdr_argument;
unsigned res = 0;
CLIENT *clnt;
char *master;
struct sockaddr saddr;
char servername[MAXNETNAMELEN + 1];
int r;
if (!domain || !map || !key || (ypop != YPOP_DELETE && !data))
return YPERR_BADARGS;
args.update_args.mapname = map;
args.update_args.key.yp_buf_len = keylen;
args.update_args.key.yp_buf_val = key;
args.update_args.datum.yp_buf_len = datalen;
args.update_args.datum.yp_buf_val = data;
if ((r = yp_master (domain, map, &master)) != 0)
return r;
if (!host2netname (servername, master, domain))
{
fputs (_("yp_update: cannot convert host to netname\n"), stderr);
return YPERR_YPERR;
}
if ((clnt = clnt_create (master, YPU_PROG, YPU_VERS, "tcp")) == NULL)
{
clnt_pcreateerror ("yp_update: clnt_create");
return YPERR_RPC;
}
if (!clnt_control (clnt, CLGET_SERVER_ADDR, (char *) &saddr))
{
fputs (_("yp_update: cannot get server address\n"), stderr);
return YPERR_RPC;
}
switch (ypop)
{
case YPOP_CHANGE:
case YPOP_INSERT:
case YPOP_STORE:
xdr_argument = (xdrproc_t) xdr_ypupdate_args;
break;
case YPOP_DELETE:
xdr_argument = (xdrproc_t) xdr_ypdelete_args;
break;
default:
return YPERR_BADARGS;
break;
}
clnt->cl_auth = authdes_create (servername, WINDOW, &saddr, NULL);
if (clnt->cl_auth == NULL)
clnt->cl_auth = authunix_create_default ();
again:
r = clnt_call (clnt, ypop, xdr_argument, (caddr_t) &args,
(xdrproc_t) xdr_u_int, (caddr_t) &res, RPCTIMEOUT);
if (r == RPC_AUTHERROR)
{
if (clnt->cl_auth->ah_cred.oa_flavor == AUTH_DES)
{
clnt->cl_auth = authunix_create_default ();
goto again;
}
else
return YPERR_ACCESS;
}
if (r != RPC_SUCCESS)
{
clnt_perror (clnt, "yp_update: clnt_call");
return YPERR_RPC;
}
return res;
}
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