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https://github.com/freebsd/freebsd-src
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![Minsoo Choo](/assets/img/avatar_default.png)
Reviewed by: dab MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D43726
1238 lines
28 KiB
C
1238 lines
28 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
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* Copyright (c) 1998 Bill Paul <wpaul@ctr.columbia.edu>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "namespace.h"
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#include "reentrant.h"
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/file.h>
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#include <sys/uio.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <rpc/rpc.h>
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#include <rpc/xdr.h>
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#include <rpcsvc/yp.h>
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#include "un-namespace.h"
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#include "libc_private.h"
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/*
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* We have to define these here due to clashes between yp_prot.h and
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* yp.h.
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*/
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#define YPMATCHCACHE
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#ifdef YPMATCHCACHE
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struct ypmatch_ent {
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char *ypc_map;
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keydat ypc_key;
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valdat ypc_val;
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time_t ypc_expire_t;
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struct ypmatch_ent *ypc_next;
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};
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#define YPLIB_MAXCACHE 5 /* At most 5 entries */
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#define YPLIB_EXPIRE 5 /* Expire after 5 seconds */
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#endif
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struct dom_binding {
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struct dom_binding *dom_pnext;
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char dom_domain[YPMAXDOMAIN + 1];
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struct sockaddr_in dom_server_addr;
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u_short dom_server_port;
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int dom_socket;
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CLIENT *dom_client;
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u_short dom_local_port; /* now I finally know what this is for. */
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long dom_vers;
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#ifdef YPMATCHCACHE
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struct ypmatch_ent *cache;
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int ypmatch_cachecnt;
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#endif
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};
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#include <rpcsvc/ypclnt.h>
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#ifndef BINDINGDIR
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#define BINDINGDIR "/var/yp/binding"
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#endif
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#define MAX_RETRIES 20
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bool_t xdr_ypresp_all_seq(XDR *xdrs, u_long *objp);
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int (*ypresp_allfn)(unsigned long, char *, int, char *, int, void *);
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void *ypresp_data;
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static void _yp_unbind(struct dom_binding *);
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struct dom_binding *_ypbindlist;
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static char _yp_domain[MAXHOSTNAMELEN];
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int _yplib_timeout = 20;
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static mutex_t _ypmutex = MUTEX_INITIALIZER;
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#define YPLOCK() mutex_lock(&_ypmutex);
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#define YPUNLOCK() mutex_unlock(&_ypmutex);
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#ifdef YPMATCHCACHE
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static void
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ypmatch_cache_delete(struct dom_binding *ypdb, struct ypmatch_ent *prev,
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struct ypmatch_ent *cur)
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{
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if (prev == NULL)
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ypdb->cache = cur->ypc_next;
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else
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prev->ypc_next = cur->ypc_next;
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free(cur->ypc_map);
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free(cur->ypc_key.keydat_val);
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free(cur->ypc_val.valdat_val);
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free(cur);
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ypdb->ypmatch_cachecnt--;
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return;
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}
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static void
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ypmatch_cache_flush(struct dom_binding *ypdb)
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{
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struct ypmatch_ent *n, *c = ypdb->cache;
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while (c != NULL) {
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n = c->ypc_next;
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ypmatch_cache_delete(ypdb, NULL, c);
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c = n;
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}
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return;
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}
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static void
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ypmatch_cache_expire(struct dom_binding *ypdb)
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{
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struct ypmatch_ent *c = ypdb->cache;
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struct ypmatch_ent *n, *p = NULL;
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time_t t;
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time(&t);
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while (c != NULL) {
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if (t >= c->ypc_expire_t) {
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n = c->ypc_next;
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ypmatch_cache_delete(ypdb, p, c);
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c = n;
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} else {
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p = c;
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c = c->ypc_next;
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}
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}
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return;
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}
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static void
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ypmatch_cache_insert(struct dom_binding *ypdb, char *map, keydat *key,
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valdat *val)
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{
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struct ypmatch_ent *new;
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/* Do an expire run to maybe open up a slot. */
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if (ypdb->ypmatch_cachecnt)
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ypmatch_cache_expire(ypdb);
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/*
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* If there are no slots free, then force an expire of
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* the least recently used entry.
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*/
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if (ypdb->ypmatch_cachecnt >= YPLIB_MAXCACHE) {
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struct ypmatch_ent *o = NULL, *c = ypdb->cache;
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time_t oldest = 0;
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oldest = ~oldest;
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while (c != NULL) {
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if (c->ypc_expire_t < oldest) {
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oldest = c->ypc_expire_t;
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o = c;
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}
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c = c->ypc_next;
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}
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if (o == NULL)
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return;
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o->ypc_expire_t = 0;
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ypmatch_cache_expire(ypdb);
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}
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new = malloc(sizeof(struct ypmatch_ent));
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if (new == NULL)
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return;
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new->ypc_map = strdup(map);
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if (new->ypc_map == NULL) {
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free(new);
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return;
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}
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new->ypc_key.keydat_val = malloc(key->keydat_len);
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if (new->ypc_key.keydat_val == NULL) {
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free(new->ypc_map);
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free(new);
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return;
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}
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new->ypc_val.valdat_val = malloc(val->valdat_len);
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if (new->ypc_val.valdat_val == NULL) {
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free(new->ypc_val.valdat_val);
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free(new->ypc_map);
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free(new);
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return;
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}
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new->ypc_expire_t = time(NULL) + YPLIB_EXPIRE;
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new->ypc_key.keydat_len = key->keydat_len;
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new->ypc_val.valdat_len = val->valdat_len;
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bcopy(key->keydat_val, new->ypc_key.keydat_val, key->keydat_len);
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bcopy(val->valdat_val, new->ypc_val.valdat_val, val->valdat_len);
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new->ypc_next = ypdb->cache;
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ypdb->cache = new;
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ypdb->ypmatch_cachecnt++;
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return;
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}
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static bool_t
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ypmatch_cache_lookup(struct dom_binding *ypdb, char *map, keydat *key,
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valdat *val)
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{
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struct ypmatch_ent *c;
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ypmatch_cache_expire(ypdb);
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for (c = ypdb->cache; c != NULL; c = c->ypc_next) {
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if (strcmp(map, c->ypc_map))
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continue;
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if (key->keydat_len != c->ypc_key.keydat_len)
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continue;
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if (bcmp(key->keydat_val, c->ypc_key.keydat_val,
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key->keydat_len))
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continue;
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}
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if (c == NULL)
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return(FALSE);
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val->valdat_len = c->ypc_val.valdat_len;
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val->valdat_val = c->ypc_val.valdat_val;
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return(TRUE);
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}
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#endif
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const char *
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ypbinderr_string(int incode)
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{
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static char err[80];
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switch (incode) {
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case 0:
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return ("Success");
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case YPBIND_ERR_ERR:
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return ("Internal ypbind error");
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case YPBIND_ERR_NOSERV:
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return ("Domain not bound");
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case YPBIND_ERR_RESC:
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return ("System resource allocation failure");
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}
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sprintf(err, "Unknown ypbind error: #%d\n", incode);
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return (err);
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}
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int
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_yp_dobind(char *dom, struct dom_binding **ypdb)
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{
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static pid_t pid = -1;
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char path[MAXPATHLEN];
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struct dom_binding *ysd, *ysd2;
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struct ypbind_resp ypbr;
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struct timeval tv;
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struct sockaddr_in clnt_sin;
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int clnt_sock, fd;
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pid_t gpid;
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CLIENT *client;
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int new = 0, r;
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int retries = 0;
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struct sockaddr_in check;
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socklen_t checklen = sizeof(struct sockaddr_in);
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/* Not allowed; bad doggie. Bad. */
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if (strchr(dom, '/') != NULL)
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return(YPERR_BADARGS);
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gpid = getpid();
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if (!(pid == -1 || pid == gpid)) {
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ysd = _ypbindlist;
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while (ysd) {
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if (ysd->dom_client != NULL)
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_yp_unbind(ysd);
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ysd2 = ysd->dom_pnext;
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free(ysd);
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ysd = ysd2;
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}
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_ypbindlist = NULL;
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}
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pid = gpid;
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if (ypdb != NULL)
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*ypdb = NULL;
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if (dom == NULL || strlen(dom) == 0)
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return (YPERR_BADARGS);
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for (ysd = _ypbindlist; ysd; ysd = ysd->dom_pnext)
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if (strcmp(dom, ysd->dom_domain) == 0)
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break;
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if (ysd == NULL) {
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ysd = (struct dom_binding *)malloc(sizeof *ysd);
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if (ysd == NULL)
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return (YPERR_RESRC);
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bzero((char *)ysd, sizeof *ysd);
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ysd->dom_socket = -1;
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ysd->dom_vers = 0;
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new = 1;
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} else {
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/* Check the socket -- may have been hosed by the caller. */
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if (_getsockname(ysd->dom_socket, (struct sockaddr *)&check,
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&checklen) == -1 || check.sin_family != AF_INET ||
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check.sin_port != ysd->dom_local_port) {
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/* Socket became bogus somehow... need to rebind. */
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int save, sock;
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sock = ysd->dom_socket;
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save = _dup(ysd->dom_socket);
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if (ysd->dom_client != NULL)
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clnt_destroy(ysd->dom_client);
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ysd->dom_vers = 0;
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ysd->dom_client = NULL;
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sock = _dup2(save, sock);
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_close(save);
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}
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}
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again:
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retries++;
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if (retries > MAX_RETRIES) {
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if (new)
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free(ysd);
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return(YPERR_YPBIND);
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}
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#ifdef BINDINGDIR
|
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if (ysd->dom_vers == 0) {
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/*
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* We're trying to make a new binding: zorch the
|
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* existing handle now (if any).
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*/
|
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if (ysd->dom_client != NULL) {
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clnt_destroy(ysd->dom_client);
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ysd->dom_client = NULL;
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ysd->dom_socket = -1;
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}
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snprintf(path, sizeof(path), "%s/%s.%d", BINDINGDIR, dom, 2);
|
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if ((fd = _open(path, O_RDONLY | O_CLOEXEC)) == -1) {
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/* no binding file, YP is dead. */
|
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/* Try to bring it back to life. */
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_close(fd);
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goto skipit;
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}
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if (_flock(fd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) {
|
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struct iovec iov[2];
|
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struct ypbind_resp ybr;
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u_short ypb_port;
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iov[0].iov_base = (caddr_t)&ypb_port;
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iov[0].iov_len = sizeof ypb_port;
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iov[1].iov_base = (caddr_t)&ybr;
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iov[1].iov_len = sizeof ybr;
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r = _readv(fd, iov, 2);
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if (r != iov[0].iov_len + iov[1].iov_len) {
|
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_close(fd);
|
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ysd->dom_vers = -1;
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goto again;
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}
|
|
|
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bzero(&ysd->dom_server_addr, sizeof ysd->dom_server_addr);
|
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ysd->dom_server_addr.sin_family = AF_INET;
|
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ysd->dom_server_addr.sin_len = sizeof(struct sockaddr_in);
|
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bcopy(&ybr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr,
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&ysd->dom_server_addr.sin_addr.s_addr,
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sizeof(ysd->dom_server_addr.sin_addr.s_addr));
|
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bcopy(&ybr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port,
|
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&ysd->dom_server_addr.sin_port,
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sizeof(ysd->dom_server_addr.sin_port));
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|
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ysd->dom_server_port = ysd->dom_server_addr.sin_port;
|
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_close(fd);
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goto gotit;
|
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} else {
|
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/* no lock on binding file, YP is dead. */
|
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/* Try to bring it back to life. */
|
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_close(fd);
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goto skipit;
|
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}
|
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}
|
|
skipit:
|
|
#endif
|
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if (ysd->dom_vers == -1 || ysd->dom_vers == 0) {
|
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/*
|
|
* We're trying to make a new binding: zorch the
|
|
* existing handle now (if any).
|
|
*/
|
|
if (ysd->dom_client != NULL) {
|
|
clnt_destroy(ysd->dom_client);
|
|
ysd->dom_client = NULL;
|
|
ysd->dom_socket = -1;
|
|
}
|
|
bzero((char *)&clnt_sin, sizeof clnt_sin);
|
|
clnt_sin.sin_family = AF_INET;
|
|
clnt_sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
|
|
|
|
clnt_sock = RPC_ANYSOCK;
|
|
client = clnttcp_create(&clnt_sin, YPBINDPROG, YPBINDVERS, &clnt_sock,
|
|
0, 0);
|
|
if (client == NULL) {
|
|
/*
|
|
* These conditions indicate ypbind just isn't
|
|
* alive -- we probably don't want to shoot our
|
|
* mouth off in this case; instead generate error
|
|
* messages only for really exotic problems.
|
|
*/
|
|
if (rpc_createerr.cf_stat != RPC_PROGNOTREGISTERED &&
|
|
(rpc_createerr.cf_stat != RPC_SYSTEMERROR &&
|
|
rpc_createerr.cf_error.re_errno == ECONNREFUSED))
|
|
clnt_pcreateerror("clnttcp_create");
|
|
if (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_sin.sin_port) >= IPPORT_RESERVED) {
|
|
if (client != NULL)
|
|
clnt_destroy(client);
|
|
if (new)
|
|
free(ysd);
|
|
return(YPERR_YPBIND);
|
|
}
|
|
tv.tv_sec = _yplib_timeout/2;
|
|
tv.tv_usec = 0;
|
|
r = clnt_call(client, YPBINDPROC_DOMAIN,
|
|
(xdrproc_t)xdr_domainname, &dom,
|
|
(xdrproc_t)xdr_ypbind_resp, &ypbr, tv);
|
|
if (r != RPC_SUCCESS) {
|
|
clnt_destroy(client);
|
|
ysd->dom_vers = -1;
|
|
if (r == RPC_PROGUNAVAIL || r == RPC_PROCUNAVAIL) {
|
|
if (new)
|
|
free(ysd);
|
|
return(YPERR_YPBIND);
|
|
}
|
|
fprintf(stderr,
|
|
"YP: server for domain %s not responding, retrying\n", dom);
|
|
goto again;
|
|
} else {
|
|
if (ypbr.ypbind_status != YPBIND_SUCC_VAL) {
|
|
struct timespec time_to_sleep, time_remaining;
|
|
|
|
clnt_destroy(client);
|
|
ysd->dom_vers = -1;
|
|
|
|
time_to_sleep.tv_sec = _yplib_timeout/2;
|
|
time_to_sleep.tv_nsec = 0;
|
|
_nanosleep(&time_to_sleep,
|
|
&time_remaining);
|
|
goto again;
|
|
}
|
|
}
|
|
clnt_destroy(client);
|
|
|
|
bzero((char *)&ysd->dom_server_addr, sizeof ysd->dom_server_addr);
|
|
ysd->dom_server_addr.sin_family = AF_INET;
|
|
bcopy(&ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port,
|
|
&ysd->dom_server_addr.sin_port,
|
|
sizeof(ysd->dom_server_addr.sin_port));
|
|
bcopy(&ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr,
|
|
&ysd->dom_server_addr.sin_addr.s_addr,
|
|
sizeof(ysd->dom_server_addr.sin_addr.s_addr));
|
|
|
|
/*
|
|
* We could do a reserved port check here too, but this
|
|
* could pose compatibility problems. The local ypbind is
|
|
* supposed to decide whether or not to trust yp servers
|
|
* on insecure ports. For now, we trust its judgement.
|
|
*/
|
|
ysd->dom_server_port =
|
|
*(u_short *)&ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port;
|
|
gotit:
|
|
ysd->dom_vers = YPVERS;
|
|
strlcpy(ysd->dom_domain, dom, sizeof(ysd->dom_domain));
|
|
}
|
|
|
|
/* Don't rebuild the connection to the server unless we have to. */
|
|
if (ysd->dom_client == NULL) {
|
|
tv.tv_sec = _yplib_timeout/2;
|
|
tv.tv_usec = 0;
|
|
ysd->dom_socket = RPC_ANYSOCK;
|
|
ysd->dom_client = clntudp_bufcreate(&ysd->dom_server_addr,
|
|
YPPROG, YPVERS, tv, &ysd->dom_socket, 65507, 65507);
|
|
if (ysd->dom_client == NULL) {
|
|
clnt_pcreateerror("clntudp_create");
|
|
ysd->dom_vers = -1;
|
|
goto again;
|
|
}
|
|
if (_fcntl(ysd->dom_socket, F_SETFD, 1) == -1)
|
|
perror("fcntl: F_SETFD");
|
|
/*
|
|
* We want a port number associated with this socket
|
|
* so that we can check its authenticity later.
|
|
*/
|
|
checklen = sizeof(struct sockaddr_in);
|
|
bzero((char *)&check, checklen);
|
|
_bind(ysd->dom_socket, (struct sockaddr *)&check, checklen);
|
|
check.sin_family = AF_INET;
|
|
if (!_getsockname(ysd->dom_socket,
|
|
(struct sockaddr *)&check, &checklen)) {
|
|
ysd->dom_local_port = check.sin_port;
|
|
} else {
|
|
clnt_destroy(ysd->dom_client);
|
|
if (new)
|
|
free(ysd);
|
|
return(YPERR_YPBIND);
|
|
}
|
|
}
|
|
|
|
if (new) {
|
|
ysd->dom_pnext = _ypbindlist;
|
|
_ypbindlist = ysd;
|
|
}
|
|
|
|
/*
|
|
* Set low retry timeout to realistically handle UDP packet
|
|
* loss for YP packet bursts.
|
|
*/
|
|
tv.tv_sec = 1;
|
|
tv.tv_usec = 0;
|
|
clnt_control(ysd->dom_client, CLSET_RETRY_TIMEOUT, (char*)&tv);
|
|
|
|
if (ypdb != NULL)
|
|
*ypdb = ysd;
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
_yp_unbind(struct dom_binding *ypb)
|
|
{
|
|
struct sockaddr_in check;
|
|
socklen_t checklen = sizeof(struct sockaddr_in);
|
|
|
|
if (ypb->dom_client != NULL) {
|
|
/* Check the socket -- may have been hosed by the caller. */
|
|
if (_getsockname(ypb->dom_socket, (struct sockaddr *)&check,
|
|
&checklen) == -1 || check.sin_family != AF_INET ||
|
|
check.sin_port != ypb->dom_local_port) {
|
|
int save, sock;
|
|
|
|
sock = ypb->dom_socket;
|
|
save = _dup(ypb->dom_socket);
|
|
clnt_destroy(ypb->dom_client);
|
|
sock = _dup2(save, sock);
|
|
_close(save);
|
|
} else
|
|
clnt_destroy(ypb->dom_client);
|
|
}
|
|
|
|
ypb->dom_client = NULL;
|
|
ypb->dom_socket = -1;
|
|
ypb->dom_vers = -1;
|
|
#ifdef YPMATCHCACHE
|
|
ypmatch_cache_flush(ypb);
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
yp_bind_locked(char *dom)
|
|
{
|
|
return (_yp_dobind(dom, NULL));
|
|
}
|
|
|
|
int
|
|
yp_bind(char *dom)
|
|
{
|
|
int r;
|
|
|
|
YPLOCK();
|
|
r = yp_bind_locked(dom);
|
|
YPUNLOCK();
|
|
return (r);
|
|
}
|
|
|
|
static void
|
|
yp_unbind_locked(char *dom)
|
|
{
|
|
struct dom_binding *ypb, *ypbp;
|
|
|
|
ypbp = NULL;
|
|
for (ypb = _ypbindlist; ypb; ypb = ypb->dom_pnext) {
|
|
if (strcmp(dom, ypb->dom_domain) == 0) {
|
|
_yp_unbind(ypb);
|
|
if (ypbp)
|
|
ypbp->dom_pnext = ypb->dom_pnext;
|
|
else
|
|
_ypbindlist = ypb->dom_pnext;
|
|
free(ypb);
|
|
return;
|
|
}
|
|
ypbp = ypb;
|
|
}
|
|
return;
|
|
}
|
|
|
|
void
|
|
yp_unbind(char *dom)
|
|
{
|
|
YPLOCK();
|
|
yp_unbind_locked(dom);
|
|
YPUNLOCK();
|
|
}
|
|
|
|
int
|
|
yp_match(char *indomain, char *inmap, const char *inkey, int inkeylen,
|
|
char **outval, int *outvallen)
|
|
{
|
|
struct dom_binding *ysd;
|
|
struct ypresp_val yprv;
|
|
struct timeval tv;
|
|
struct ypreq_key yprk;
|
|
int r;
|
|
int retries = 0;
|
|
*outval = NULL;
|
|
*outvallen = 0;
|
|
|
|
/* Sanity check */
|
|
|
|
if (inkey == NULL || !strlen(inkey) || inkeylen <= 0 ||
|
|
inmap == NULL || !strlen(inmap) ||
|
|
indomain == NULL || !strlen(indomain))
|
|
return (YPERR_BADARGS);
|
|
|
|
YPLOCK();
|
|
if (_yp_dobind(indomain, &ysd) != 0) {
|
|
YPUNLOCK();
|
|
return(YPERR_DOMAIN);
|
|
}
|
|
|
|
yprk.domain = indomain;
|
|
yprk.map = inmap;
|
|
yprk.key.keydat_val = (char *)inkey;
|
|
yprk.key.keydat_len = inkeylen;
|
|
|
|
#ifdef YPMATCHCACHE
|
|
if (ypmatch_cache_lookup(ysd, yprk.map, &yprk.key, &yprv.val) == TRUE) {
|
|
/*
|
|
if (!strcmp(_yp_domain, indomain) && ypmatch_find(inmap, inkey,
|
|
inkeylen, &yprv.val.valdat_val, &yprv.val.valdat_len)) {
|
|
*/
|
|
*outvallen = yprv.val.valdat_len;
|
|
*outval = (char *)malloc(*outvallen+1);
|
|
if (*outval == NULL) {
|
|
_yp_unbind(ysd);
|
|
*outvallen = 0;
|
|
YPUNLOCK();
|
|
return (YPERR_RESRC);
|
|
}
|
|
bcopy(yprv.val.valdat_val, *outval, *outvallen);
|
|
(*outval)[*outvallen] = '\0';
|
|
YPUNLOCK();
|
|
return (0);
|
|
}
|
|
_yp_unbind(ysd);
|
|
#endif
|
|
|
|
again:
|
|
if (retries > MAX_RETRIES) {
|
|
YPUNLOCK();
|
|
return (YPERR_RPC);
|
|
}
|
|
|
|
if (_yp_dobind(indomain, &ysd) != 0) {
|
|
YPUNLOCK();
|
|
return (YPERR_DOMAIN);
|
|
}
|
|
|
|
tv.tv_sec = _yplib_timeout;
|
|
tv.tv_usec = 0;
|
|
|
|
bzero((char *)&yprv, sizeof yprv);
|
|
|
|
r = clnt_call(ysd->dom_client, YPPROC_MATCH,
|
|
(xdrproc_t)xdr_ypreq_key, &yprk,
|
|
(xdrproc_t)xdr_ypresp_val, &yprv, tv);
|
|
if (r != RPC_SUCCESS) {
|
|
clnt_perror(ysd->dom_client, "yp_match: clnt_call");
|
|
_yp_unbind(ysd);
|
|
retries++;
|
|
goto again;
|
|
}
|
|
|
|
if (!(r = ypprot_err(yprv.stat))) {
|
|
*outvallen = yprv.val.valdat_len;
|
|
*outval = (char *)malloc(*outvallen+1);
|
|
if (*outval == NULL) {
|
|
_yp_unbind(ysd);
|
|
*outvallen = 0;
|
|
xdr_free((xdrproc_t)xdr_ypresp_val, &yprv);
|
|
YPUNLOCK();
|
|
return (YPERR_RESRC);
|
|
}
|
|
bcopy(yprv.val.valdat_val, *outval, *outvallen);
|
|
(*outval)[*outvallen] = '\0';
|
|
#ifdef YPMATCHCACHE
|
|
ypmatch_cache_insert(ysd, yprk.map, &yprk.key, &yprv.val);
|
|
#endif
|
|
}
|
|
|
|
xdr_free((xdrproc_t)xdr_ypresp_val, &yprv);
|
|
YPUNLOCK();
|
|
return (r);
|
|
}
|
|
|
|
static int
|
|
yp_get_default_domain_locked(char **domp)
|
|
{
|
|
*domp = NULL;
|
|
if (_yp_domain[0] == '\0')
|
|
if (getdomainname(_yp_domain, sizeof _yp_domain))
|
|
return (YPERR_NODOM);
|
|
*domp = _yp_domain;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
yp_get_default_domain(char **domp)
|
|
{
|
|
int r;
|
|
|
|
YPLOCK();
|
|
r = yp_get_default_domain_locked(domp);
|
|
YPUNLOCK();
|
|
return (r);
|
|
}
|
|
|
|
int
|
|
yp_first(char *indomain, char *inmap, char **outkey, int *outkeylen,
|
|
char **outval, int *outvallen)
|
|
{
|
|
struct ypresp_key_val yprkv;
|
|
struct ypreq_nokey yprnk;
|
|
struct dom_binding *ysd;
|
|
struct timeval tv;
|
|
int r;
|
|
int retries = 0;
|
|
/* Sanity check */
|
|
|
|
if (indomain == NULL || !strlen(indomain) ||
|
|
inmap == NULL || !strlen(inmap))
|
|
return (YPERR_BADARGS);
|
|
|
|
*outkey = *outval = NULL;
|
|
*outkeylen = *outvallen = 0;
|
|
|
|
YPLOCK();
|
|
again:
|
|
if (retries > MAX_RETRIES) {
|
|
YPUNLOCK();
|
|
return (YPERR_RPC);
|
|
}
|
|
|
|
if (_yp_dobind(indomain, &ysd) != 0) {
|
|
YPUNLOCK();
|
|
return (YPERR_DOMAIN);
|
|
}
|
|
|
|
tv.tv_sec = _yplib_timeout;
|
|
tv.tv_usec = 0;
|
|
|
|
yprnk.domain = indomain;
|
|
yprnk.map = inmap;
|
|
bzero((char *)&yprkv, sizeof yprkv);
|
|
|
|
r = clnt_call(ysd->dom_client, YPPROC_FIRST,
|
|
(xdrproc_t)xdr_ypreq_nokey, &yprnk,
|
|
(xdrproc_t)xdr_ypresp_key_val, &yprkv, tv);
|
|
if (r != RPC_SUCCESS) {
|
|
clnt_perror(ysd->dom_client, "yp_first: clnt_call");
|
|
_yp_unbind(ysd);
|
|
retries++;
|
|
goto again;
|
|
}
|
|
if (!(r = ypprot_err(yprkv.stat))) {
|
|
*outkeylen = yprkv.key.keydat_len;
|
|
*outkey = (char *)malloc(*outkeylen+1);
|
|
if (*outkey == NULL) {
|
|
_yp_unbind(ysd);
|
|
*outkeylen = 0;
|
|
xdr_free((xdrproc_t)xdr_ypresp_key_val, &yprkv);
|
|
YPUNLOCK();
|
|
return (YPERR_RESRC);
|
|
}
|
|
bcopy(yprkv.key.keydat_val, *outkey, *outkeylen);
|
|
(*outkey)[*outkeylen] = '\0';
|
|
*outvallen = yprkv.val.valdat_len;
|
|
*outval = (char *)malloc(*outvallen+1);
|
|
if (*outval == NULL) {
|
|
free(*outkey);
|
|
_yp_unbind(ysd);
|
|
*outkeylen = *outvallen = 0;
|
|
xdr_free((xdrproc_t)xdr_ypresp_key_val, &yprkv);
|
|
YPUNLOCK();
|
|
return (YPERR_RESRC);
|
|
}
|
|
bcopy(yprkv.val.valdat_val, *outval, *outvallen);
|
|
(*outval)[*outvallen] = '\0';
|
|
}
|
|
|
|
xdr_free((xdrproc_t)xdr_ypresp_key_val, &yprkv);
|
|
YPUNLOCK();
|
|
return (r);
|
|
}
|
|
|
|
int
|
|
yp_next(char *indomain, char *inmap, char *inkey, int inkeylen,
|
|
char **outkey, int *outkeylen, char **outval, int *outvallen)
|
|
{
|
|
struct ypresp_key_val yprkv;
|
|
struct ypreq_key yprk;
|
|
struct dom_binding *ysd;
|
|
struct timeval tv;
|
|
int r;
|
|
int retries = 0;
|
|
/* Sanity check */
|
|
|
|
if (inkey == NULL || !strlen(inkey) || inkeylen <= 0 ||
|
|
inmap == NULL || !strlen(inmap) ||
|
|
indomain == NULL || !strlen(indomain))
|
|
return (YPERR_BADARGS);
|
|
|
|
*outkey = *outval = NULL;
|
|
*outkeylen = *outvallen = 0;
|
|
|
|
YPLOCK();
|
|
again:
|
|
if (retries > MAX_RETRIES) {
|
|
YPUNLOCK();
|
|
return (YPERR_RPC);
|
|
}
|
|
|
|
if (_yp_dobind(indomain, &ysd) != 0) {
|
|
YPUNLOCK();
|
|
return (YPERR_DOMAIN);
|
|
}
|
|
|
|
tv.tv_sec = _yplib_timeout;
|
|
tv.tv_usec = 0;
|
|
|
|
yprk.domain = indomain;
|
|
yprk.map = inmap;
|
|
yprk.key.keydat_val = inkey;
|
|
yprk.key.keydat_len = inkeylen;
|
|
bzero((char *)&yprkv, sizeof yprkv);
|
|
|
|
r = clnt_call(ysd->dom_client, YPPROC_NEXT,
|
|
(xdrproc_t)xdr_ypreq_key, &yprk,
|
|
(xdrproc_t)xdr_ypresp_key_val, &yprkv, tv);
|
|
if (r != RPC_SUCCESS) {
|
|
clnt_perror(ysd->dom_client, "yp_next: clnt_call");
|
|
_yp_unbind(ysd);
|
|
retries++;
|
|
goto again;
|
|
}
|
|
if (!(r = ypprot_err(yprkv.stat))) {
|
|
*outkeylen = yprkv.key.keydat_len;
|
|
*outkey = (char *)malloc(*outkeylen+1);
|
|
if (*outkey == NULL) {
|
|
_yp_unbind(ysd);
|
|
*outkeylen = 0;
|
|
xdr_free((xdrproc_t)xdr_ypresp_key_val, &yprkv);
|
|
YPUNLOCK();
|
|
return (YPERR_RESRC);
|
|
}
|
|
bcopy(yprkv.key.keydat_val, *outkey, *outkeylen);
|
|
(*outkey)[*outkeylen] = '\0';
|
|
*outvallen = yprkv.val.valdat_len;
|
|
*outval = (char *)malloc(*outvallen+1);
|
|
if (*outval == NULL) {
|
|
free(*outkey);
|
|
_yp_unbind(ysd);
|
|
*outkeylen = *outvallen = 0;
|
|
xdr_free((xdrproc_t)xdr_ypresp_key_val, &yprkv);
|
|
YPUNLOCK();
|
|
return (YPERR_RESRC);
|
|
}
|
|
bcopy(yprkv.val.valdat_val, *outval, *outvallen);
|
|
(*outval)[*outvallen] = '\0';
|
|
}
|
|
|
|
xdr_free((xdrproc_t)xdr_ypresp_key_val, &yprkv);
|
|
YPUNLOCK();
|
|
return (r);
|
|
}
|
|
|
|
int
|
|
yp_all(char *indomain, char *inmap, struct ypall_callback *incallback)
|
|
{
|
|
struct ypreq_nokey yprnk;
|
|
struct dom_binding *ysd;
|
|
struct timeval tv;
|
|
struct sockaddr_in clnt_sin;
|
|
CLIENT *clnt;
|
|
u_long status, savstat;
|
|
int clnt_sock;
|
|
int retries = 0;
|
|
/* Sanity check */
|
|
|
|
if (indomain == NULL || !strlen(indomain) ||
|
|
inmap == NULL || !strlen(inmap))
|
|
return (YPERR_BADARGS);
|
|
|
|
YPLOCK();
|
|
again:
|
|
if (retries > MAX_RETRIES) {
|
|
YPUNLOCK();
|
|
return (YPERR_RPC);
|
|
}
|
|
|
|
if (_yp_dobind(indomain, &ysd) != 0) {
|
|
YPUNLOCK();
|
|
return (YPERR_DOMAIN);
|
|
}
|
|
|
|
tv.tv_sec = _yplib_timeout;
|
|
tv.tv_usec = 0;
|
|
|
|
/* YPPROC_ALL manufactures its own channel to ypserv using TCP */
|
|
|
|
clnt_sock = RPC_ANYSOCK;
|
|
clnt_sin = ysd->dom_server_addr;
|
|
clnt_sin.sin_port = 0;
|
|
clnt = clnttcp_create(&clnt_sin, YPPROG, YPVERS, &clnt_sock, 0, 0);
|
|
if (clnt == NULL) {
|
|
YPUNLOCK();
|
|
printf("clnttcp_create failed\n");
|
|
return (YPERR_PMAP);
|
|
}
|
|
|
|
yprnk.domain = indomain;
|
|
yprnk.map = inmap;
|
|
ypresp_allfn = incallback->foreach;
|
|
ypresp_data = (void *)incallback->data;
|
|
|
|
if (clnt_call(clnt, YPPROC_ALL,
|
|
(xdrproc_t)xdr_ypreq_nokey, &yprnk,
|
|
(xdrproc_t)xdr_ypresp_all_seq, &status, tv) != RPC_SUCCESS) {
|
|
clnt_perror(clnt, "yp_all: clnt_call");
|
|
clnt_destroy(clnt);
|
|
_yp_unbind(ysd);
|
|
retries++;
|
|
goto again;
|
|
}
|
|
|
|
clnt_destroy(clnt);
|
|
savstat = status;
|
|
xdr_free((xdrproc_t)xdr_ypresp_all_seq, &status); /* not really needed... */
|
|
YPUNLOCK();
|
|
if (savstat != YP_NOMORE)
|
|
return (ypprot_err(savstat));
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
yp_order(char *indomain, char *inmap, int *outorder)
|
|
{
|
|
struct dom_binding *ysd;
|
|
struct ypresp_order ypro;
|
|
struct ypreq_nokey yprnk;
|
|
struct timeval tv;
|
|
int r;
|
|
|
|
/* Sanity check */
|
|
|
|
if (indomain == NULL || !strlen(indomain) ||
|
|
inmap == NULL || !strlen(inmap))
|
|
return (YPERR_BADARGS);
|
|
|
|
YPLOCK();
|
|
again:
|
|
if (_yp_dobind(indomain, &ysd) != 0) {
|
|
YPUNLOCK();
|
|
return (YPERR_DOMAIN);
|
|
}
|
|
|
|
tv.tv_sec = _yplib_timeout;
|
|
tv.tv_usec = 0;
|
|
|
|
yprnk.domain = indomain;
|
|
yprnk.map = inmap;
|
|
|
|
bzero((char *)(char *)&ypro, sizeof ypro);
|
|
|
|
r = clnt_call(ysd->dom_client, YPPROC_ORDER,
|
|
(xdrproc_t)xdr_ypreq_nokey, &yprnk,
|
|
(xdrproc_t)xdr_ypresp_order, &ypro, tv);
|
|
|
|
/*
|
|
* NIS+ in YP compat mode doesn't support the YPPROC_ORDER
|
|
* procedure.
|
|
*/
|
|
if (r == RPC_PROCUNAVAIL) {
|
|
YPUNLOCK();
|
|
return(YPERR_YPERR);
|
|
}
|
|
|
|
if (r != RPC_SUCCESS) {
|
|
clnt_perror(ysd->dom_client, "yp_order: clnt_call");
|
|
_yp_unbind(ysd);
|
|
goto again;
|
|
}
|
|
|
|
if (!(r = ypprot_err(ypro.stat))) {
|
|
*outorder = ypro.ordernum;
|
|
}
|
|
|
|
xdr_free((xdrproc_t)xdr_ypresp_order, &ypro);
|
|
YPUNLOCK();
|
|
return (r);
|
|
}
|
|
|
|
int
|
|
yp_master(char *indomain, char *inmap, char **outname)
|
|
{
|
|
struct dom_binding *ysd;
|
|
struct ypresp_master yprm;
|
|
struct ypreq_nokey yprnk;
|
|
struct timeval tv;
|
|
int r;
|
|
|
|
/* Sanity check */
|
|
|
|
if (indomain == NULL || !strlen(indomain) ||
|
|
inmap == NULL || !strlen(inmap))
|
|
return (YPERR_BADARGS);
|
|
YPLOCK();
|
|
again:
|
|
if (_yp_dobind(indomain, &ysd) != 0) {
|
|
YPUNLOCK();
|
|
return (YPERR_DOMAIN);
|
|
}
|
|
|
|
tv.tv_sec = _yplib_timeout;
|
|
tv.tv_usec = 0;
|
|
|
|
yprnk.domain = indomain;
|
|
yprnk.map = inmap;
|
|
|
|
bzero((char *)&yprm, sizeof yprm);
|
|
|
|
r = clnt_call(ysd->dom_client, YPPROC_MASTER,
|
|
(xdrproc_t)xdr_ypreq_nokey, &yprnk,
|
|
(xdrproc_t)xdr_ypresp_master, &yprm, tv);
|
|
if (r != RPC_SUCCESS) {
|
|
clnt_perror(ysd->dom_client, "yp_master: clnt_call");
|
|
_yp_unbind(ysd);
|
|
goto again;
|
|
}
|
|
|
|
if (!(r = ypprot_err(yprm.stat))) {
|
|
*outname = (char *)strdup(yprm.peer);
|
|
}
|
|
|
|
xdr_free((xdrproc_t)xdr_ypresp_master, &yprm);
|
|
YPUNLOCK();
|
|
return (r);
|
|
}
|
|
|
|
int
|
|
yp_maplist(char *indomain, struct ypmaplist **outmaplist)
|
|
{
|
|
struct dom_binding *ysd;
|
|
struct ypresp_maplist ypml;
|
|
struct timeval tv;
|
|
int r;
|
|
|
|
/* Sanity check */
|
|
|
|
if (indomain == NULL || !strlen(indomain))
|
|
return (YPERR_BADARGS);
|
|
|
|
YPLOCK();
|
|
again:
|
|
if (_yp_dobind(indomain, &ysd) != 0) {
|
|
YPUNLOCK();
|
|
return (YPERR_DOMAIN);
|
|
}
|
|
|
|
tv.tv_sec = _yplib_timeout;
|
|
tv.tv_usec = 0;
|
|
|
|
bzero((char *)&ypml, sizeof ypml);
|
|
|
|
r = clnt_call(ysd->dom_client, YPPROC_MAPLIST,
|
|
(xdrproc_t)xdr_domainname, &indomain,
|
|
(xdrproc_t)xdr_ypresp_maplist, &ypml,tv);
|
|
if (r != RPC_SUCCESS) {
|
|
clnt_perror(ysd->dom_client, "yp_maplist: clnt_call");
|
|
_yp_unbind(ysd);
|
|
goto again;
|
|
}
|
|
if (!(r = ypprot_err(ypml.stat))) {
|
|
*outmaplist = ypml.maps;
|
|
}
|
|
|
|
/* NO: xdr_free((xdrproc_t)xdr_ypresp_maplist, &ypml);*/
|
|
YPUNLOCK();
|
|
return (r);
|
|
}
|
|
|
|
const char *
|
|
yperr_string(int incode)
|
|
{
|
|
static char err[80];
|
|
|
|
switch (incode) {
|
|
case 0:
|
|
return ("Success");
|
|
case YPERR_BADARGS:
|
|
return ("Request arguments bad");
|
|
case YPERR_RPC:
|
|
return ("RPC failure");
|
|
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 ("YP server 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 ("Server data base is bad");
|
|
case YPERR_VERS:
|
|
return ("YP server version mismatch - server can't supply service.");
|
|
case YPERR_ACCESS:
|
|
return ("Access violation");
|
|
case YPERR_BUSY:
|
|
return ("Database is busy");
|
|
}
|
|
sprintf(err, "YP unknown error %d\n", incode);
|
|
return (err);
|
|
}
|
|
|
|
int
|
|
ypprot_err(unsigned int incode)
|
|
{
|
|
switch (incode) {
|
|
case YP_TRUE:
|
|
return (0);
|
|
case YP_FALSE:
|
|
return (YPERR_YPBIND);
|
|
case YP_NOMORE:
|
|
return (YPERR_NOMORE);
|
|
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);
|
|
}
|
|
|
|
int
|
|
_yp_check(char **dom)
|
|
{
|
|
char *unused;
|
|
|
|
YPLOCK();
|
|
if (_yp_domain[0]=='\0')
|
|
if (yp_get_default_domain_locked(&unused)) {
|
|
YPUNLOCK();
|
|
return (0);
|
|
}
|
|
|
|
if (dom)
|
|
*dom = _yp_domain;
|
|
|
|
if (yp_bind_locked(_yp_domain) == 0) {
|
|
yp_unbind_locked(_yp_domain);
|
|
YPUNLOCK();
|
|
return (1);
|
|
}
|
|
YPUNLOCK();
|
|
return (0);
|
|
}
|