17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5cb5caa98Sdjl * Common Development and Distribution License (the "License").
6cb5caa98Sdjl * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
217c478bd9Sstevel@tonic-gate /*
22*36e852a1SRaja Andra * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
237c478bd9Sstevel@tonic-gate * Use is subject to license terms.
247c478bd9Sstevel@tonic-gate */
257c478bd9Sstevel@tonic-gate
267c478bd9Sstevel@tonic-gate /*
277c478bd9Sstevel@tonic-gate * nis/getnetgrent.c -- "nis" backend for nsswitch "netgroup" database
287c478bd9Sstevel@tonic-gate *
297c478bd9Sstevel@tonic-gate * The API for netgroups differs sufficiently from that for the average
307c478bd9Sstevel@tonic-gate * getXXXbyYYY function that we use very few of the support routines in
317c478bd9Sstevel@tonic-gate * nis_common.h.
327c478bd9Sstevel@tonic-gate *
337c478bd9Sstevel@tonic-gate * The implementation of setnetgrent()/getnetgrent() here follows the
347c478bd9Sstevel@tonic-gate * the 4.x code, inasmuch as the setnetgrent() routine does all the work
357c478bd9Sstevel@tonic-gate * of traversing the netgroup graph and building a (potentially large)
367c478bd9Sstevel@tonic-gate * list in memory, and getnetgrent() just steps down the list.
377c478bd9Sstevel@tonic-gate *
387c478bd9Sstevel@tonic-gate * An alternative, and probably better, implementation would lazy-eval
397c478bd9Sstevel@tonic-gate * the netgroup graph in response to getnetgrent() calls (though
407c478bd9Sstevel@tonic-gate * setnetgrent() should still check for the top-level netgroup name
417c478bd9Sstevel@tonic-gate * and return NSS_SUCCESS / NSS_NOTFOUND).
427c478bd9Sstevel@tonic-gate */
437c478bd9Sstevel@tonic-gate
447c478bd9Sstevel@tonic-gate #include "nis_common.h"
457c478bd9Sstevel@tonic-gate #include <ctype.h>
467c478bd9Sstevel@tonic-gate #include <rpcsvc/ypclnt.h>
477c478bd9Sstevel@tonic-gate #include <malloc.h>
487c478bd9Sstevel@tonic-gate #include <string.h>
497c478bd9Sstevel@tonic-gate #ifdef DEBUG
507c478bd9Sstevel@tonic-gate #include <sys/syslog.h>
517c478bd9Sstevel@tonic-gate #endif /* DEBUG */
527c478bd9Sstevel@tonic-gate
537c478bd9Sstevel@tonic-gate /*
547c478bd9Sstevel@tonic-gate * The nss_backend_t for a getnetgrent() sequence; we actually give the
557c478bd9Sstevel@tonic-gate * netgroup frontend a pointer to one of these structures in response to
567c478bd9Sstevel@tonic-gate * a (successful) setnetgrent() call on the nis_netgr_be backend
577c478bd9Sstevel@tonic-gate * described further down in this file.
587c478bd9Sstevel@tonic-gate */
597c478bd9Sstevel@tonic-gate
607c478bd9Sstevel@tonic-gate struct nis_getnetgr_be;
617c478bd9Sstevel@tonic-gate typedef nss_status_t (*nis_getnetgr_op_t)(struct nis_getnetgr_be *, void *);
627c478bd9Sstevel@tonic-gate
637c478bd9Sstevel@tonic-gate struct nis_getnetgr_be {
647c478bd9Sstevel@tonic-gate nis_getnetgr_op_t *ops;
657c478bd9Sstevel@tonic-gate nss_dbop_t n_ops;
667c478bd9Sstevel@tonic-gate /*
677c478bd9Sstevel@tonic-gate * State for set/get/endnetgrent()
687c478bd9Sstevel@tonic-gate */
697c478bd9Sstevel@tonic-gate char *netgroup;
707c478bd9Sstevel@tonic-gate struct grouplist *all_members;
717c478bd9Sstevel@tonic-gate struct grouplist *next_member;
727c478bd9Sstevel@tonic-gate };
737c478bd9Sstevel@tonic-gate
747c478bd9Sstevel@tonic-gate struct grouplist { /* One element of the list generated by a setnetgrent() */
757c478bd9Sstevel@tonic-gate char *triple[NSS_NETGR_N];
767c478bd9Sstevel@tonic-gate struct grouplist *gl_nxt;
777c478bd9Sstevel@tonic-gate };
787c478bd9Sstevel@tonic-gate
797c478bd9Sstevel@tonic-gate static nss_status_t
getnetgr_set(be,a)807c478bd9Sstevel@tonic-gate getnetgr_set(be, a)
817c478bd9Sstevel@tonic-gate struct nis_getnetgr_be *be;
827c478bd9Sstevel@tonic-gate void *a;
837c478bd9Sstevel@tonic-gate {
847c478bd9Sstevel@tonic-gate const char *netgroup = (const char *) a;
857c478bd9Sstevel@tonic-gate
867c478bd9Sstevel@tonic-gate if (be->netgroup != 0 &&
877c478bd9Sstevel@tonic-gate strcmp(be->netgroup, netgroup) == 0) {
887c478bd9Sstevel@tonic-gate /* We already have the member-list; regurgitate it */
897c478bd9Sstevel@tonic-gate be->next_member = be->all_members;
907c478bd9Sstevel@tonic-gate return (NSS_SUCCESS);
917c478bd9Sstevel@tonic-gate }
927c478bd9Sstevel@tonic-gate return (NSS_NOTFOUND);
937c478bd9Sstevel@tonic-gate }
947c478bd9Sstevel@tonic-gate
957c478bd9Sstevel@tonic-gate static nss_status_t
getnetgr_get(be,a)967c478bd9Sstevel@tonic-gate getnetgr_get(be, a)
977c478bd9Sstevel@tonic-gate struct nis_getnetgr_be *be;
987c478bd9Sstevel@tonic-gate void *a;
997c478bd9Sstevel@tonic-gate {
100cb5caa98Sdjl struct nss_getnetgrent_args *args = (struct nss_getnetgrent_args *)a;
1017c478bd9Sstevel@tonic-gate struct grouplist *mem;
1027c478bd9Sstevel@tonic-gate
1037c478bd9Sstevel@tonic-gate if ((mem = be->next_member) == 0) {
1047c478bd9Sstevel@tonic-gate args->status = NSS_NETGR_NO;
1057c478bd9Sstevel@tonic-gate } else {
1067c478bd9Sstevel@tonic-gate char *buffer = args->buffer;
1077c478bd9Sstevel@tonic-gate int buflen = args->buflen;
1087c478bd9Sstevel@tonic-gate enum nss_netgr_argn i;
1097c478bd9Sstevel@tonic-gate
1107c478bd9Sstevel@tonic-gate args->status = NSS_NETGR_FOUND;
1117c478bd9Sstevel@tonic-gate
1127c478bd9Sstevel@tonic-gate for (i = 0; i < NSS_NETGR_N; i++) {
1137c478bd9Sstevel@tonic-gate const char *str;
1147c478bd9Sstevel@tonic-gate ssize_t len;
1157c478bd9Sstevel@tonic-gate
1167c478bd9Sstevel@tonic-gate if ((str = mem->triple[i]) == 0) {
1177c478bd9Sstevel@tonic-gate args->retp[i] = 0;
1187c478bd9Sstevel@tonic-gate } else if ((len = strlen(str) + 1) <= buflen) {
1197c478bd9Sstevel@tonic-gate args->retp[i] = buffer;
120cb5caa98Sdjl (void) memcpy(buffer, str, len);
1217c478bd9Sstevel@tonic-gate buffer += len;
1227c478bd9Sstevel@tonic-gate buflen -= len;
1237c478bd9Sstevel@tonic-gate } else {
1247c478bd9Sstevel@tonic-gate args->status = NSS_NETGR_NOMEM;
1257c478bd9Sstevel@tonic-gate break;
1267c478bd9Sstevel@tonic-gate }
1277c478bd9Sstevel@tonic-gate }
1287c478bd9Sstevel@tonic-gate be->next_member = mem->gl_nxt;
1297c478bd9Sstevel@tonic-gate }
1307c478bd9Sstevel@tonic-gate return (NSS_SUCCESS); /* Yup, even for end-of-list, i.e. */
1317c478bd9Sstevel@tonic-gate /* do NOT advance to next backend. */
1327c478bd9Sstevel@tonic-gate }
1337c478bd9Sstevel@tonic-gate
1347c478bd9Sstevel@tonic-gate /*ARGSUSED*/
1357c478bd9Sstevel@tonic-gate static nss_status_t
getnetgr_end(be,dummy)1367c478bd9Sstevel@tonic-gate getnetgr_end(be, dummy)
1377c478bd9Sstevel@tonic-gate struct nis_getnetgr_be *be;
1387c478bd9Sstevel@tonic-gate void *dummy;
1397c478bd9Sstevel@tonic-gate {
1407c478bd9Sstevel@tonic-gate struct grouplist *gl;
1417c478bd9Sstevel@tonic-gate struct grouplist *next;
1427c478bd9Sstevel@tonic-gate
1437c478bd9Sstevel@tonic-gate for (gl = be->all_members; gl != NULL; gl = next) {
1447c478bd9Sstevel@tonic-gate enum nss_netgr_argn i;
1457c478bd9Sstevel@tonic-gate
1467c478bd9Sstevel@tonic-gate next = gl->gl_nxt;
1477c478bd9Sstevel@tonic-gate for (i = NSS_NETGR_MACHINE; i < NSS_NETGR_N; i++) {
1487c478bd9Sstevel@tonic-gate if (gl->triple[i] != 0) {
1497c478bd9Sstevel@tonic-gate free(gl->triple[i]);
1507c478bd9Sstevel@tonic-gate }
1517c478bd9Sstevel@tonic-gate }
1527c478bd9Sstevel@tonic-gate free(gl);
1537c478bd9Sstevel@tonic-gate }
1547c478bd9Sstevel@tonic-gate be->all_members = 0;
1557c478bd9Sstevel@tonic-gate be->next_member = 0;
1567c478bd9Sstevel@tonic-gate if (be->netgroup != 0) {
1577c478bd9Sstevel@tonic-gate free(be->netgroup);
1587c478bd9Sstevel@tonic-gate be->netgroup = 0;
1597c478bd9Sstevel@tonic-gate }
1607c478bd9Sstevel@tonic-gate return (NSS_SUCCESS);
1617c478bd9Sstevel@tonic-gate }
1627c478bd9Sstevel@tonic-gate
1637c478bd9Sstevel@tonic-gate /*ARGSUSED*/
1647c478bd9Sstevel@tonic-gate static nss_status_t
getnetgr_destr(be,dummy)1657c478bd9Sstevel@tonic-gate getnetgr_destr(be, dummy)
1667c478bd9Sstevel@tonic-gate struct nis_getnetgr_be *be;
1677c478bd9Sstevel@tonic-gate void *dummy;
1687c478bd9Sstevel@tonic-gate {
1697c478bd9Sstevel@tonic-gate if (be != 0) {
170cb5caa98Sdjl (void) getnetgr_end(be, (void *)0);
1717c478bd9Sstevel@tonic-gate free(be);
1727c478bd9Sstevel@tonic-gate }
1737c478bd9Sstevel@tonic-gate return (NSS_SUCCESS);
1747c478bd9Sstevel@tonic-gate }
1757c478bd9Sstevel@tonic-gate
1767c478bd9Sstevel@tonic-gate static nis_getnetgr_op_t getnetgr_ops[] = {
1777c478bd9Sstevel@tonic-gate getnetgr_destr,
1787c478bd9Sstevel@tonic-gate getnetgr_end,
1797c478bd9Sstevel@tonic-gate getnetgr_set,
1807c478bd9Sstevel@tonic-gate getnetgr_get, /* getnetgrent_r() */
1817c478bd9Sstevel@tonic-gate };
1827c478bd9Sstevel@tonic-gate
1837c478bd9Sstevel@tonic-gate
1847c478bd9Sstevel@tonic-gate /*
1857c478bd9Sstevel@tonic-gate * The nss_backend_t for innetgr() and setnetgrent().
1867c478bd9Sstevel@tonic-gate */
1877c478bd9Sstevel@tonic-gate
1887c478bd9Sstevel@tonic-gate struct nis_netgr_be;
1897c478bd9Sstevel@tonic-gate typedef nss_status_t (*nis_netgr_op_t)(struct nis_netgr_be *, void *);
1907c478bd9Sstevel@tonic-gate
1917c478bd9Sstevel@tonic-gate struct nis_netgr_be {
1927c478bd9Sstevel@tonic-gate nis_netgr_op_t *ops;
1937c478bd9Sstevel@tonic-gate nss_dbop_t n_ops;
1947c478bd9Sstevel@tonic-gate const char *domain; /* (default) YP domain */
1957c478bd9Sstevel@tonic-gate };
1967c478bd9Sstevel@tonic-gate
1977c478bd9Sstevel@tonic-gate
1987c478bd9Sstevel@tonic-gate /*
1997c478bd9Sstevel@tonic-gate * Code to do top-down search in the graph defined by the 'netgroup' YP map
2007c478bd9Sstevel@tonic-gate */
2017c478bd9Sstevel@tonic-gate
2027c478bd9Sstevel@tonic-gate /*
2037c478bd9Sstevel@tonic-gate * ===> This code is now used for setnetgrent(), not just innetgr().
2047c478bd9Sstevel@tonic-gate *
2057c478bd9Sstevel@tonic-gate * If the easy way doesn't pan out, recursively search the 'netgroup' map.
2067c478bd9Sstevel@tonic-gate * In order to do this, we:
2077c478bd9Sstevel@tonic-gate *
2087c478bd9Sstevel@tonic-gate * - remember all the netgroup names we've seen during this search,
2097c478bd9Sstevel@tonic-gate * whether or not we've expanded them yet (we want fast insertion
2107c478bd9Sstevel@tonic-gate * with duplicate-detection, so use yet another chained hash table),
2117c478bd9Sstevel@tonic-gate *
2127c478bd9Sstevel@tonic-gate * - keep a list of all the netgroups we haven't expanded yet (we just
2137c478bd9Sstevel@tonic-gate * want fast insertion and pop-first, so a linked list will do fine).
2147c478bd9Sstevel@tonic-gate * If we insert at the head, we get a depth-first search; insertion
2157c478bd9Sstevel@tonic-gate * at the tail gives breadth-first (?), which seems preferable (?).
2167c478bd9Sstevel@tonic-gate *
2177c478bd9Sstevel@tonic-gate * A netgrnam struct contains pointers for both the hash-table and the list.
2187c478bd9Sstevel@tonic-gate * It also contains the netgroup name; note that we embed the name at the
2197c478bd9Sstevel@tonic-gate * end of the structure rather than holding a pointer to yet another
2207c478bd9Sstevel@tonic-gate * malloc()ed region.
2217c478bd9Sstevel@tonic-gate *
2227c478bd9Sstevel@tonic-gate * A netgrtab structure contains the hash-chain heads and the head/tail
2237c478bd9Sstevel@tonic-gate * pointers for the expansion list.
2247c478bd9Sstevel@tonic-gate *
225*36e852a1SRaja Andra * Most of this code is common to at least the NIS backend; it
2267c478bd9Sstevel@tonic-gate * should be generalized and, presumably, moved into the frontend.
2277c478bd9Sstevel@tonic-gate * ==> Not any longer...
2287c478bd9Sstevel@tonic-gate */
2297c478bd9Sstevel@tonic-gate
2307c478bd9Sstevel@tonic-gate struct netgrnam {
2317c478bd9Sstevel@tonic-gate struct netgrnam *hash_chain;
2327c478bd9Sstevel@tonic-gate struct netgrnam *expand_next;
2337c478bd9Sstevel@tonic-gate char name[1]; /* Really [strlen(name) + 1] */
2347c478bd9Sstevel@tonic-gate };
2357c478bd9Sstevel@tonic-gate
2367c478bd9Sstevel@tonic-gate #define HASHMOD 113
2377c478bd9Sstevel@tonic-gate
2387c478bd9Sstevel@tonic-gate struct netgrtab {
2397c478bd9Sstevel@tonic-gate struct netgrnam *expand_first;
2407c478bd9Sstevel@tonic-gate struct netgrnam **expand_lastp;
2417c478bd9Sstevel@tonic-gate struct netgrnam *hash_heads[HASHMOD];
2427c478bd9Sstevel@tonic-gate };
2437c478bd9Sstevel@tonic-gate
2447c478bd9Sstevel@tonic-gate static void
ngt_init(ngt)2457c478bd9Sstevel@tonic-gate ngt_init(ngt)
2467c478bd9Sstevel@tonic-gate struct netgrtab *ngt;
2477c478bd9Sstevel@tonic-gate {
248cb5caa98Sdjl (void) memset((void *)ngt, 0, sizeof (*ngt));
2497c478bd9Sstevel@tonic-gate ngt->expand_lastp = &ngt->expand_first;
2507c478bd9Sstevel@tonic-gate }
2517c478bd9Sstevel@tonic-gate
2527c478bd9Sstevel@tonic-gate /* === ? Change ngt_init() and ngt_destroy() to malloc/free struct netgrtab */
2537c478bd9Sstevel@tonic-gate
2547c478bd9Sstevel@tonic-gate static void
2557c478bd9Sstevel@tonic-gate /* ==> ? Should return 'failed' (out-of-memory) status ? */
ngt_insert(ngt,name,namelen)2567c478bd9Sstevel@tonic-gate ngt_insert(ngt, name, namelen)
2577c478bd9Sstevel@tonic-gate struct netgrtab *ngt;
2587c478bd9Sstevel@tonic-gate const char *name;
2597c478bd9Sstevel@tonic-gate size_t namelen;
2607c478bd9Sstevel@tonic-gate {
2617c478bd9Sstevel@tonic-gate unsigned hashval;
2627c478bd9Sstevel@tonic-gate size_t i;
2637c478bd9Sstevel@tonic-gate struct netgrnam *cur;
2647c478bd9Sstevel@tonic-gate struct netgrnam **head;
2657c478bd9Sstevel@tonic-gate
2667c478bd9Sstevel@tonic-gate #define dummy ((struct netgrnam *)0)
2677c478bd9Sstevel@tonic-gate
2687c478bd9Sstevel@tonic-gate for (hashval = 0, i = 0; i < namelen; i++) {
2697c478bd9Sstevel@tonic-gate hashval = (hashval << 2) + hashval +
2707c478bd9Sstevel@tonic-gate ((const unsigned char *)name)[i];
2717c478bd9Sstevel@tonic-gate }
2727c478bd9Sstevel@tonic-gate head = &ngt->hash_heads[hashval % HASHMOD];
2737c478bd9Sstevel@tonic-gate for (cur = *head; cur != 0; cur = cur->hash_chain) {
2747c478bd9Sstevel@tonic-gate if (strncmp(cur->name, name, namelen) == 0 &&
2757c478bd9Sstevel@tonic-gate cur->name[namelen] == 0) {
2767c478bd9Sstevel@tonic-gate return; /* Already in table, do nothing */
2777c478bd9Sstevel@tonic-gate }
2787c478bd9Sstevel@tonic-gate }
2797c478bd9Sstevel@tonic-gate /* Create new netgrnam struct */
2807c478bd9Sstevel@tonic-gate cur = (struct netgrnam *)
2817c478bd9Sstevel@tonic-gate malloc(namelen + 1 + (char *)&dummy->name[0] - (char *)dummy);
2827c478bd9Sstevel@tonic-gate if (cur == 0) {
2837c478bd9Sstevel@tonic-gate return; /* Out of memory, too bad */
2847c478bd9Sstevel@tonic-gate }
285cb5caa98Sdjl (void) memcpy(cur->name, name, namelen);
2867c478bd9Sstevel@tonic-gate cur->name[namelen] = 0;
2877c478bd9Sstevel@tonic-gate
2887c478bd9Sstevel@tonic-gate /* Insert in hash table */
2897c478bd9Sstevel@tonic-gate cur->hash_chain = *head;
2907c478bd9Sstevel@tonic-gate *head = cur;
2917c478bd9Sstevel@tonic-gate
2927c478bd9Sstevel@tonic-gate /* Insert in expansion list (insert at end for breadth-first search */
2937c478bd9Sstevel@tonic-gate cur->expand_next = 0;
2947c478bd9Sstevel@tonic-gate *ngt->expand_lastp = cur;
2957c478bd9Sstevel@tonic-gate ngt->expand_lastp = &cur->expand_next;
2967c478bd9Sstevel@tonic-gate
2977c478bd9Sstevel@tonic-gate #undef dummy
2987c478bd9Sstevel@tonic-gate }
2997c478bd9Sstevel@tonic-gate
3007c478bd9Sstevel@tonic-gate static const char *
ngt_next(ngt)3017c478bd9Sstevel@tonic-gate ngt_next(ngt)
3027c478bd9Sstevel@tonic-gate struct netgrtab *ngt;
3037c478bd9Sstevel@tonic-gate {
3047c478bd9Sstevel@tonic-gate struct netgrnam *first;
3057c478bd9Sstevel@tonic-gate
3067c478bd9Sstevel@tonic-gate if ((first = ngt->expand_first) == 0) {
3077c478bd9Sstevel@tonic-gate return (0);
3087c478bd9Sstevel@tonic-gate }
3097c478bd9Sstevel@tonic-gate if ((ngt->expand_first = first->expand_next) == 0) {
3107c478bd9Sstevel@tonic-gate ngt->expand_lastp = &ngt->expand_first;
3117c478bd9Sstevel@tonic-gate }
3127c478bd9Sstevel@tonic-gate return (first->name);
3137c478bd9Sstevel@tonic-gate }
3147c478bd9Sstevel@tonic-gate
3157c478bd9Sstevel@tonic-gate static void
ngt_destroy(ngt)3167c478bd9Sstevel@tonic-gate ngt_destroy(ngt)
3177c478bd9Sstevel@tonic-gate struct netgrtab *ngt;
3187c478bd9Sstevel@tonic-gate {
3197c478bd9Sstevel@tonic-gate struct netgrnam *cur;
3207c478bd9Sstevel@tonic-gate struct netgrnam *next;
3217c478bd9Sstevel@tonic-gate int i;
3227c478bd9Sstevel@tonic-gate
3237c478bd9Sstevel@tonic-gate for (i = 0; i < HASHMOD; i++) {
3247c478bd9Sstevel@tonic-gate for (cur = ngt->hash_heads[i]; cur != 0; /* cstyle */) {
3257c478bd9Sstevel@tonic-gate next = cur->hash_chain;
3267c478bd9Sstevel@tonic-gate free(cur);
3277c478bd9Sstevel@tonic-gate cur = next;
3287c478bd9Sstevel@tonic-gate }
3297c478bd9Sstevel@tonic-gate }
3307c478bd9Sstevel@tonic-gate /* Don't bother zeroing pointers; must do init if we want to reuse */
3317c478bd9Sstevel@tonic-gate }
3327c478bd9Sstevel@tonic-gate
3337c478bd9Sstevel@tonic-gate typedef const char *ccp;
3347c478bd9Sstevel@tonic-gate
3357c478bd9Sstevel@tonic-gate static nss_status_t
top_down(struct nis_netgr_be * be,const char ** groups,int ngroups,int (* func)(ccp triple[3],void * iter_args,nss_status_t * return_val),void * iter_args)3367c478bd9Sstevel@tonic-gate top_down(struct nis_netgr_be *be, const char **groups, int ngroups,
3377c478bd9Sstevel@tonic-gate int (*func)(ccp triple[3], void *iter_args, nss_status_t *return_val),
3387c478bd9Sstevel@tonic-gate void *iter_args)
3397c478bd9Sstevel@tonic-gate {
3407c478bd9Sstevel@tonic-gate struct netgrtab *ngt;
3417c478bd9Sstevel@tonic-gate /* netgrtab goes on the heap, not the stack, because it's large and */
3427c478bd9Sstevel@tonic-gate /* stacks may not be all that big in multi-threaded programs. */
3437c478bd9Sstevel@tonic-gate
3447c478bd9Sstevel@tonic-gate const char *group;
3457c478bd9Sstevel@tonic-gate int nfound;
3467c478bd9Sstevel@tonic-gate int done;
3477c478bd9Sstevel@tonic-gate nss_status_t result;
3487c478bd9Sstevel@tonic-gate
349cb5caa98Sdjl if ((ngt = (struct netgrtab *)malloc(sizeof (*ngt))) == 0) {
3507c478bd9Sstevel@tonic-gate return (NSS_UNAVAIL);
3517c478bd9Sstevel@tonic-gate }
3527c478bd9Sstevel@tonic-gate ngt_init(ngt);
3537c478bd9Sstevel@tonic-gate
3547c478bd9Sstevel@tonic-gate while (ngroups > 0) {
3557c478bd9Sstevel@tonic-gate ngt_insert(ngt, *groups, strlen(*groups));
3567c478bd9Sstevel@tonic-gate groups++;
3577c478bd9Sstevel@tonic-gate ngroups--;
3587c478bd9Sstevel@tonic-gate }
3597c478bd9Sstevel@tonic-gate
3607c478bd9Sstevel@tonic-gate done = 0; /* Set to 1 to indicate that we cut the iteration */
3617c478bd9Sstevel@tonic-gate /* short (and 'result' holds the return value) */
3627c478bd9Sstevel@tonic-gate nfound = 0; /* Number of successful netgroup yp_match calls */
3637c478bd9Sstevel@tonic-gate
3647c478bd9Sstevel@tonic-gate while (!done && (group = ngt_next(ngt)) != 0) {
3657c478bd9Sstevel@tonic-gate char *val;
3667c478bd9Sstevel@tonic-gate int vallen;
3677c478bd9Sstevel@tonic-gate char *p;
3687c478bd9Sstevel@tonic-gate int yperr;
3697c478bd9Sstevel@tonic-gate
3707c478bd9Sstevel@tonic-gate result = _nss_nis_ypmatch(be->domain, "netgroup", group,
371*36e852a1SRaja Andra &val, &vallen, &yperr);
3727c478bd9Sstevel@tonic-gate if (result != NSS_SUCCESS) {
373cb5caa98Sdjl /*LINTED E_NOP_IF_STMT*/
3747c478bd9Sstevel@tonic-gate if (result == NSS_NOTFOUND) {
375cb5caa98Sdjl ;
3767c478bd9Sstevel@tonic-gate #ifdef DEBUG
3777c478bd9Sstevel@tonic-gate syslog(LOG_WARNING,
3787c478bd9Sstevel@tonic-gate "NIS netgroup lookup: %s doesn't exist",
3797c478bd9Sstevel@tonic-gate group);
3807c478bd9Sstevel@tonic-gate #endif /* DEBUG */
3817c478bd9Sstevel@tonic-gate } else {
3827c478bd9Sstevel@tonic-gate #ifdef DEBUG
3837c478bd9Sstevel@tonic-gate syslog(LOG_WARNING,
3847c478bd9Sstevel@tonic-gate "NIS netgroup lookup: yp_match returned [%s]",
3857c478bd9Sstevel@tonic-gate yperr_string(yperr));
3867c478bd9Sstevel@tonic-gate #endif /* DEBUG */
3877c478bd9Sstevel@tonic-gate done = 1; /* Give up, return result */
3887c478bd9Sstevel@tonic-gate }
3897c478bd9Sstevel@tonic-gate /* Don't need to clean up anything */
3907c478bd9Sstevel@tonic-gate continue;
3917c478bd9Sstevel@tonic-gate }
3927c478bd9Sstevel@tonic-gate
3937c478bd9Sstevel@tonic-gate nfound++;
3947c478bd9Sstevel@tonic-gate
3957c478bd9Sstevel@tonic-gate if ((p = strpbrk(val, "#\n")) != 0) {
3967c478bd9Sstevel@tonic-gate *p = '\0';
3977c478bd9Sstevel@tonic-gate }
3987c478bd9Sstevel@tonic-gate p = val;
3997c478bd9Sstevel@tonic-gate
4007c478bd9Sstevel@tonic-gate /* Parse val into triples and recursive netgroup references */
4017c478bd9Sstevel@tonic-gate /*CONSTCOND*/
4027c478bd9Sstevel@tonic-gate while (1) {
4037c478bd9Sstevel@tonic-gate ccp triple[NSS_NETGR_N];
4047c478bd9Sstevel@tonic-gate int syntax_err;
4057c478bd9Sstevel@tonic-gate enum nss_netgr_argn i;
4067c478bd9Sstevel@tonic-gate
4077c478bd9Sstevel@tonic-gate while (isspace(*p)) {
4087c478bd9Sstevel@tonic-gate p++;
4097c478bd9Sstevel@tonic-gate }
4107c478bd9Sstevel@tonic-gate if (*p == '\0') {
4117c478bd9Sstevel@tonic-gate /* Finished processing this particular val */
4127c478bd9Sstevel@tonic-gate break;
4137c478bd9Sstevel@tonic-gate }
4147c478bd9Sstevel@tonic-gate if (*p != '(') {
4157c478bd9Sstevel@tonic-gate /* Doesn't look like the start of a triple, */
4167c478bd9Sstevel@tonic-gate /* so assume it's a recursive netgroup. */
4177c478bd9Sstevel@tonic-gate char *start = p;
4187c478bd9Sstevel@tonic-gate p = strpbrk(start, " \t");
4197c478bd9Sstevel@tonic-gate if (p == 0) {
4207c478bd9Sstevel@tonic-gate /* Point p at the final '\0' */
4217c478bd9Sstevel@tonic-gate p = start + strlen(start);
4227c478bd9Sstevel@tonic-gate }
4237c478bd9Sstevel@tonic-gate ngt_insert(ngt, start, (size_t)(p - start));
4247c478bd9Sstevel@tonic-gate continue;
4257c478bd9Sstevel@tonic-gate }
4267c478bd9Sstevel@tonic-gate
4277c478bd9Sstevel@tonic-gate /* Main case: a (machine, user, domain) triple */
4287c478bd9Sstevel@tonic-gate p++;
4297c478bd9Sstevel@tonic-gate syntax_err = 0;
4307c478bd9Sstevel@tonic-gate for (i = NSS_NETGR_MACHINE; i < NSS_NETGR_N; i++) {
4317c478bd9Sstevel@tonic-gate char *start;
4327c478bd9Sstevel@tonic-gate char *limit;
4337c478bd9Sstevel@tonic-gate const char *terminators = ",) \t";
4347c478bd9Sstevel@tonic-gate
4357c478bd9Sstevel@tonic-gate if (i == NSS_NETGR_DOMAIN) {
4367c478bd9Sstevel@tonic-gate /* Don't allow comma */
4377c478bd9Sstevel@tonic-gate terminators++;
4387c478bd9Sstevel@tonic-gate }
4397c478bd9Sstevel@tonic-gate while (isspace(*p)) {
4407c478bd9Sstevel@tonic-gate p++;
4417c478bd9Sstevel@tonic-gate }
4427c478bd9Sstevel@tonic-gate start = p;
4437c478bd9Sstevel@tonic-gate limit = strpbrk(start, terminators);
4447c478bd9Sstevel@tonic-gate if (limit == 0) {
4457c478bd9Sstevel@tonic-gate syntax_err++;
4467c478bd9Sstevel@tonic-gate break;
4477c478bd9Sstevel@tonic-gate }
4487c478bd9Sstevel@tonic-gate p = limit;
4497c478bd9Sstevel@tonic-gate while (isspace(*p)) {
4507c478bd9Sstevel@tonic-gate p++;
4517c478bd9Sstevel@tonic-gate }
4527c478bd9Sstevel@tonic-gate if (*p == terminators[0]) {
4537c478bd9Sstevel@tonic-gate /*
4547c478bd9Sstevel@tonic-gate * Successfully parsed this name and
4557c478bd9Sstevel@tonic-gate * the separator after it (comma or
4567c478bd9Sstevel@tonic-gate * right paren); leave p ready for
4577c478bd9Sstevel@tonic-gate * next parse.
4587c478bd9Sstevel@tonic-gate */
4597c478bd9Sstevel@tonic-gate p++;
4607c478bd9Sstevel@tonic-gate if (start == limit) {
4617c478bd9Sstevel@tonic-gate /* Wildcard */
4627c478bd9Sstevel@tonic-gate triple[i] = 0;
4637c478bd9Sstevel@tonic-gate } else {
4647c478bd9Sstevel@tonic-gate *limit = '\0';
4657c478bd9Sstevel@tonic-gate triple[i] = start;
4667c478bd9Sstevel@tonic-gate }
4677c478bd9Sstevel@tonic-gate } else {
4687c478bd9Sstevel@tonic-gate syntax_err++;
4697c478bd9Sstevel@tonic-gate break;
4707c478bd9Sstevel@tonic-gate }
4717c478bd9Sstevel@tonic-gate }
4727c478bd9Sstevel@tonic-gate
4737c478bd9Sstevel@tonic-gate if (syntax_err) {
4747c478bd9Sstevel@tonic-gate /*
4757c478bd9Sstevel@tonic-gate * ===> log it;
4767c478bd9Sstevel@tonic-gate * ===> try skipping past next ')'; failing that, abandon the line;
4777c478bd9Sstevel@tonic-gate */
4787c478bd9Sstevel@tonic-gate break; /* Abandon this line */
4797c478bd9Sstevel@tonic-gate } else if (!(*func)(triple, iter_args, &result)) {
4807c478bd9Sstevel@tonic-gate /* Return result, good or bad */
4817c478bd9Sstevel@tonic-gate done = 1;
4827c478bd9Sstevel@tonic-gate break;
4837c478bd9Sstevel@tonic-gate }
4847c478bd9Sstevel@tonic-gate }
4857c478bd9Sstevel@tonic-gate /* End of inner loop over val[] */
4867c478bd9Sstevel@tonic-gate free(val);
4877c478bd9Sstevel@tonic-gate }
4887c478bd9Sstevel@tonic-gate /* End of outer loop (!done && ngt_next(ngt) != 0) */
4897c478bd9Sstevel@tonic-gate
4907c478bd9Sstevel@tonic-gate ngt_destroy(ngt);
4917c478bd9Sstevel@tonic-gate free(ngt);
4927c478bd9Sstevel@tonic-gate
4937c478bd9Sstevel@tonic-gate if (done) {
4947c478bd9Sstevel@tonic-gate return (result);
4957c478bd9Sstevel@tonic-gate } else if (nfound > 0) {
4967c478bd9Sstevel@tonic-gate /* ==== ? Should only do this if all the top-level groups */
4977c478bd9Sstevel@tonic-gate /* exist in YP? */
4987c478bd9Sstevel@tonic-gate return (NSS_SUCCESS);
4997c478bd9Sstevel@tonic-gate } else {
5007c478bd9Sstevel@tonic-gate return (NSS_NOTFOUND);
5017c478bd9Sstevel@tonic-gate }
5027c478bd9Sstevel@tonic-gate }
5037c478bd9Sstevel@tonic-gate
5047c478bd9Sstevel@tonic-gate
5057c478bd9Sstevel@tonic-gate /*
5067c478bd9Sstevel@tonic-gate * Code for setnetgrent()
5077c478bd9Sstevel@tonic-gate */
5087c478bd9Sstevel@tonic-gate
5097c478bd9Sstevel@tonic-gate /*
5107c478bd9Sstevel@tonic-gate * Iterator function for setnetgrent(): copy triple, add to be->all_members
5117c478bd9Sstevel@tonic-gate */
5127c478bd9Sstevel@tonic-gate static int
save_triple(ccp trippp[NSS_NETGR_N],void * headp_arg,nss_status_t * return_val)5137c478bd9Sstevel@tonic-gate save_triple(ccp trippp[NSS_NETGR_N], void *headp_arg,
5147c478bd9Sstevel@tonic-gate nss_status_t *return_val)
5157c478bd9Sstevel@tonic-gate {
5167c478bd9Sstevel@tonic-gate struct grouplist **headp = headp_arg;
5177c478bd9Sstevel@tonic-gate struct grouplist *gl;
5187c478bd9Sstevel@tonic-gate enum nss_netgr_argn i;
5197c478bd9Sstevel@tonic-gate
5207c478bd9Sstevel@tonic-gate if ((gl = (struct grouplist *)malloc(sizeof (*gl))) == 0) {
5217c478bd9Sstevel@tonic-gate /* Out of memory */
5227c478bd9Sstevel@tonic-gate *return_val = NSS_UNAVAIL;
5237c478bd9Sstevel@tonic-gate return (0);
5247c478bd9Sstevel@tonic-gate }
5257c478bd9Sstevel@tonic-gate for (i = NSS_NETGR_MACHINE; i < NSS_NETGR_N; i++) {
5267c478bd9Sstevel@tonic-gate if (trippp[i] == 0) {
5277c478bd9Sstevel@tonic-gate /* Wildcard */
5287c478bd9Sstevel@tonic-gate gl->triple[i] = 0;
5297c478bd9Sstevel@tonic-gate } else if ((gl->triple[i] = strdup(trippp[i])) == 0) {
5307c478bd9Sstevel@tonic-gate /* Out of memory. Free any we've allocated */
5317c478bd9Sstevel@tonic-gate enum nss_netgr_argn j;
5327c478bd9Sstevel@tonic-gate
5337c478bd9Sstevel@tonic-gate for (j = NSS_NETGR_MACHINE; j < i; j++) {
5347c478bd9Sstevel@tonic-gate if (gl->triple[j] != 0) {
5357c478bd9Sstevel@tonic-gate free(gl->triple[j]);
5367c478bd9Sstevel@tonic-gate }
5377c478bd9Sstevel@tonic-gate }
5387c478bd9Sstevel@tonic-gate *return_val = NSS_UNAVAIL;
5397c478bd9Sstevel@tonic-gate return (0);
5407c478bd9Sstevel@tonic-gate }
5417c478bd9Sstevel@tonic-gate }
5427c478bd9Sstevel@tonic-gate gl->gl_nxt = *headp;
5437c478bd9Sstevel@tonic-gate *headp = gl;
5447c478bd9Sstevel@tonic-gate return (1); /* Tell top_down() to keep iterating */
5457c478bd9Sstevel@tonic-gate }
5467c478bd9Sstevel@tonic-gate
5477c478bd9Sstevel@tonic-gate static nss_status_t
netgr_set(be,a)5487c478bd9Sstevel@tonic-gate netgr_set(be, a)
5497c478bd9Sstevel@tonic-gate struct nis_netgr_be *be;
5507c478bd9Sstevel@tonic-gate void *a;
5517c478bd9Sstevel@tonic-gate {
552cb5caa98Sdjl struct nss_setnetgrent_args *args = (struct nss_setnetgrent_args *)a;
5537c478bd9Sstevel@tonic-gate struct nis_getnetgr_be *get_be;
5547c478bd9Sstevel@tonic-gate nss_status_t res;
5557c478bd9Sstevel@tonic-gate
556cb5caa98Sdjl get_be = (struct nis_getnetgr_be *)malloc(sizeof (*get_be));
5577c478bd9Sstevel@tonic-gate if (get_be == 0) {
5587c478bd9Sstevel@tonic-gate return (NSS_UNAVAIL);
5597c478bd9Sstevel@tonic-gate }
5607c478bd9Sstevel@tonic-gate
5617c478bd9Sstevel@tonic-gate get_be->all_members = 0;
5627c478bd9Sstevel@tonic-gate res = top_down(be, &args->netgroup, 1, save_triple,
5637c478bd9Sstevel@tonic-gate &get_be->all_members);
5647c478bd9Sstevel@tonic-gate
5657c478bd9Sstevel@tonic-gate if (res == NSS_SUCCESS) {
5667c478bd9Sstevel@tonic-gate get_be->ops = getnetgr_ops;
5677c478bd9Sstevel@tonic-gate get_be->n_ops = sizeof (getnetgr_ops) /
5687c478bd9Sstevel@tonic-gate sizeof (getnetgr_ops[0]);
5697c478bd9Sstevel@tonic-gate get_be->netgroup = strdup(args->netgroup);
5707c478bd9Sstevel@tonic-gate get_be->next_member = get_be->all_members;
5717c478bd9Sstevel@tonic-gate
572cb5caa98Sdjl args->iterator = (nss_backend_t *)get_be;
5737c478bd9Sstevel@tonic-gate } else {
5747c478bd9Sstevel@tonic-gate args->iterator = 0;
5757c478bd9Sstevel@tonic-gate free(get_be);
5767c478bd9Sstevel@tonic-gate }
5777c478bd9Sstevel@tonic-gate return (res);
5787c478bd9Sstevel@tonic-gate }
5797c478bd9Sstevel@tonic-gate
5807c478bd9Sstevel@tonic-gate
5817c478bd9Sstevel@tonic-gate /*
5827c478bd9Sstevel@tonic-gate * Code for innetgr()
5837c478bd9Sstevel@tonic-gate */
5847c478bd9Sstevel@tonic-gate
5857c478bd9Sstevel@tonic-gate /*
5867c478bd9Sstevel@tonic-gate * Iterator function for innetgr(): Check whether triple matches args
5877c478bd9Sstevel@tonic-gate */
5887c478bd9Sstevel@tonic-gate static int
match_triple(ccp triple[NSS_NETGR_N],void * ia_arg,nss_status_t * return_val)5897c478bd9Sstevel@tonic-gate match_triple(ccp triple[NSS_NETGR_N], void *ia_arg, nss_status_t *return_val)
5907c478bd9Sstevel@tonic-gate {
5917c478bd9Sstevel@tonic-gate struct nss_innetgr_args *ia = ia_arg;
5927c478bd9Sstevel@tonic-gate enum nss_netgr_argn i;
5937c478bd9Sstevel@tonic-gate
5947c478bd9Sstevel@tonic-gate for (i = NSS_NETGR_MACHINE; i < NSS_NETGR_N; i++) {
5957c478bd9Sstevel@tonic-gate int (*cmpf)(const char *, const char *);
5967c478bd9Sstevel@tonic-gate char **argv;
5977c478bd9Sstevel@tonic-gate int n;
5987c478bd9Sstevel@tonic-gate const char *name = triple[i];
5997c478bd9Sstevel@tonic-gate int argc = ia->arg[i].argc;
6007c478bd9Sstevel@tonic-gate
6017c478bd9Sstevel@tonic-gate if (argc == 0 || name == 0) {
6027c478bd9Sstevel@tonic-gate /* Wildcarded on one side or t'other */
6037c478bd9Sstevel@tonic-gate continue;
6047c478bd9Sstevel@tonic-gate }
6057c478bd9Sstevel@tonic-gate argv = ia->arg[i].argv;
6067c478bd9Sstevel@tonic-gate cmpf = (i == NSS_NETGR_MACHINE) ? strcasecmp : strcmp;
6077c478bd9Sstevel@tonic-gate for (n = 0; n < argc; n++) {
6087c478bd9Sstevel@tonic-gate if ((*cmpf)(argv[n], name) == 0) {
6097c478bd9Sstevel@tonic-gate break;
6107c478bd9Sstevel@tonic-gate }
6117c478bd9Sstevel@tonic-gate }
6127c478bd9Sstevel@tonic-gate if (n >= argc) {
6137c478bd9Sstevel@tonic-gate /* Match failed, tell top_down() to keep looking */
6147c478bd9Sstevel@tonic-gate return (1);
6157c478bd9Sstevel@tonic-gate }
6167c478bd9Sstevel@tonic-gate }
6177c478bd9Sstevel@tonic-gate /* Matched on all three, so quit looking and declare victory */
6187c478bd9Sstevel@tonic-gate
6197c478bd9Sstevel@tonic-gate ia->status = NSS_NETGR_FOUND;
6207c478bd9Sstevel@tonic-gate *return_val = NSS_SUCCESS;
6217c478bd9Sstevel@tonic-gate return (0);
6227c478bd9Sstevel@tonic-gate }
6237c478bd9Sstevel@tonic-gate
6247c478bd9Sstevel@tonic-gate /*
6257c478bd9Sstevel@tonic-gate * inlist() -- return 1 if at least one item from the "what" list
6267c478bd9Sstevel@tonic-gate * is in the comma-separated, newline-terminated "list"
6277c478bd9Sstevel@tonic-gate */
6287c478bd9Sstevel@tonic-gate static const char comma = ','; /* Don't let 'cfix' near this */
6297c478bd9Sstevel@tonic-gate
6307c478bd9Sstevel@tonic-gate static int
inlist(nwhat,pwhat,list)6317c478bd9Sstevel@tonic-gate inlist(nwhat, pwhat, list)
6327c478bd9Sstevel@tonic-gate nss_innetgr_argc nwhat;
6337c478bd9Sstevel@tonic-gate nss_innetgr_argv pwhat;
6347c478bd9Sstevel@tonic-gate char *list;
6357c478bd9Sstevel@tonic-gate {
6367c478bd9Sstevel@tonic-gate char *p;
6377c478bd9Sstevel@tonic-gate nss_innetgr_argc nw;
6387c478bd9Sstevel@tonic-gate nss_innetgr_argv pw;
6397c478bd9Sstevel@tonic-gate
6407c478bd9Sstevel@tonic-gate while (*list != 0) {
6417c478bd9Sstevel@tonic-gate while (*list == comma || isspace(*list))
6427c478bd9Sstevel@tonic-gate list++;
6437c478bd9Sstevel@tonic-gate for (p = list; *p != 0 && *p != comma &&
6447c478bd9Sstevel@tonic-gate !isspace(*p); /* nothing */)
6457c478bd9Sstevel@tonic-gate p++;
6467c478bd9Sstevel@tonic-gate if (p != list) {
6477c478bd9Sstevel@tonic-gate if (*p != 0)
6487c478bd9Sstevel@tonic-gate *p++ = 0;
6497c478bd9Sstevel@tonic-gate for (pw = pwhat, nw = nwhat; nw != 0; pw++, nw--) {
6507c478bd9Sstevel@tonic-gate if (strcmp(list, *pw) == 0)
6517c478bd9Sstevel@tonic-gate return (1);
6527c478bd9Sstevel@tonic-gate }
6537c478bd9Sstevel@tonic-gate list = p;
6547c478bd9Sstevel@tonic-gate }
6557c478bd9Sstevel@tonic-gate }
6567c478bd9Sstevel@tonic-gate return (0);
6577c478bd9Sstevel@tonic-gate }
6587c478bd9Sstevel@tonic-gate
6597c478bd9Sstevel@tonic-gate /*
6607c478bd9Sstevel@tonic-gate * Generate a key for a netgroup.byXXXX NIS map
6617c478bd9Sstevel@tonic-gate */
6627c478bd9Sstevel@tonic-gate static void
makekey(key,name,domain)6637c478bd9Sstevel@tonic-gate makekey(key, name, domain)
6647c478bd9Sstevel@tonic-gate char *key;
6657c478bd9Sstevel@tonic-gate const char *name;
6667c478bd9Sstevel@tonic-gate const char *domain;
6677c478bd9Sstevel@tonic-gate {
6687c478bd9Sstevel@tonic-gate while (*key++ = *name++)
6697c478bd9Sstevel@tonic-gate ;
6707c478bd9Sstevel@tonic-gate *(key-1) = '.';
6717c478bd9Sstevel@tonic-gate while (*key++ = *domain++)
6727c478bd9Sstevel@tonic-gate ;
6737c478bd9Sstevel@tonic-gate }
6747c478bd9Sstevel@tonic-gate
6757c478bd9Sstevel@tonic-gate static int
makekey_lc(key,name,domain)6767c478bd9Sstevel@tonic-gate makekey_lc(key, name, domain)
6777c478bd9Sstevel@tonic-gate char *key;
6787c478bd9Sstevel@tonic-gate const char *name; /* Convert this to lowercase */
6797c478bd9Sstevel@tonic-gate const char *domain; /* But not this */
6807c478bd9Sstevel@tonic-gate {
6817c478bd9Sstevel@tonic-gate int found_uc = 0;
6827c478bd9Sstevel@tonic-gate char c;
6837c478bd9Sstevel@tonic-gate
6847c478bd9Sstevel@tonic-gate while (c = *name++) {
6857c478bd9Sstevel@tonic-gate if (isupper(c)) {
6867c478bd9Sstevel@tonic-gate ++found_uc;
6877c478bd9Sstevel@tonic-gate c = tolower(c);
6887c478bd9Sstevel@tonic-gate }
6897c478bd9Sstevel@tonic-gate *key++ = c;
6907c478bd9Sstevel@tonic-gate }
6917c478bd9Sstevel@tonic-gate *key++ = '.';
6927c478bd9Sstevel@tonic-gate while (*key++ = *domain++)
6937c478bd9Sstevel@tonic-gate ;
6947c478bd9Sstevel@tonic-gate return (found_uc);
6957c478bd9Sstevel@tonic-gate }
6967c478bd9Sstevel@tonic-gate
6977c478bd9Sstevel@tonic-gate /*
6987c478bd9Sstevel@tonic-gate * easy_way() -- try to use netgroup.byuser and netgroup.byhost maps to
6997c478bd9Sstevel@tonic-gate * get answers more efficiently than by recursive search.
7007c478bd9Sstevel@tonic-gate *
7017c478bd9Sstevel@tonic-gate * If more than one name (username or hostname) is specified, this approach
7027c478bd9Sstevel@tonic-gate * becomes less attractive; at some point it's probably cheaper to do the
7037c478bd9Sstevel@tonic-gate * recursive search. We don't know what the threshold is (among other things
7047c478bd9Sstevel@tonic-gate * it may depend on the site-specific struucture of netgroup information),
7057c478bd9Sstevel@tonic-gate * so here's a guesstimate.
7067c478bd9Sstevel@tonic-gate */
7077c478bd9Sstevel@tonic-gate
7087c478bd9Sstevel@tonic-gate #define NNAME_THRESHOLD 5
7097c478bd9Sstevel@tonic-gate
7107c478bd9Sstevel@tonic-gate static int
easy_way(be,ia,argp,map,try_lc,statusp)7117c478bd9Sstevel@tonic-gate easy_way(be, ia, argp, map, try_lc, statusp)
7127c478bd9Sstevel@tonic-gate struct nis_netgr_be *be;
7137c478bd9Sstevel@tonic-gate struct nss_innetgr_args *ia;
7147c478bd9Sstevel@tonic-gate struct nss_innetgr_1arg *argp;
7157c478bd9Sstevel@tonic-gate const char *map;
7167c478bd9Sstevel@tonic-gate int try_lc;
7177c478bd9Sstevel@tonic-gate nss_status_t *statusp;
7187c478bd9Sstevel@tonic-gate {
7197c478bd9Sstevel@tonic-gate nss_innetgr_argc nname = argp->argc;
7207c478bd9Sstevel@tonic-gate nss_innetgr_argv pname = argp->argv;
7217c478bd9Sstevel@tonic-gate const char *domain = ia->arg[NSS_NETGR_DOMAIN].argv[0];
7227c478bd9Sstevel@tonic-gate const char *wild = "*";
7237c478bd9Sstevel@tonic-gate int yperr;
7247c478bd9Sstevel@tonic-gate char *val;
7257c478bd9Sstevel@tonic-gate int vallen;
7267c478bd9Sstevel@tonic-gate char *key;
7277c478bd9Sstevel@tonic-gate int i;
7287c478bd9Sstevel@tonic-gate
7297c478bd9Sstevel@tonic-gate /* Our caller guaranteed that nname >= 1 */
7307c478bd9Sstevel@tonic-gate while (nname > 1) {
7317c478bd9Sstevel@tonic-gate struct nss_innetgr_1arg just_one;
7327c478bd9Sstevel@tonic-gate
7337c478bd9Sstevel@tonic-gate if (nname > NNAME_THRESHOLD) {
7347c478bd9Sstevel@tonic-gate return (0); /* May be cheaper to use 'netgroup' */
7357c478bd9Sstevel@tonic-gate }
7367c478bd9Sstevel@tonic-gate
7377c478bd9Sstevel@tonic-gate just_one.argc = 1;
7387c478bd9Sstevel@tonic-gate just_one.argv = pname;
7397c478bd9Sstevel@tonic-gate
7407c478bd9Sstevel@tonic-gate if (easy_way(be, ia, &just_one, map, try_lc, statusp) &&
7417c478bd9Sstevel@tonic-gate ia->status == NSS_NETGR_FOUND) {
7427c478bd9Sstevel@tonic-gate return (1);
7437c478bd9Sstevel@tonic-gate }
7447c478bd9Sstevel@tonic-gate ++pname;
7457c478bd9Sstevel@tonic-gate --nname;
7467c478bd9Sstevel@tonic-gate /* Fall through and do the last one inline */
7477c478bd9Sstevel@tonic-gate }
7487c478bd9Sstevel@tonic-gate
7497c478bd9Sstevel@tonic-gate if ((key = malloc(strlen(*pname) + strlen(domain) + 2)) == 0) {
7507c478bd9Sstevel@tonic-gate return (0); /* Or maybe (1) and NSS_UNAVAIL */
7517c478bd9Sstevel@tonic-gate }
7527c478bd9Sstevel@tonic-gate
7537c478bd9Sstevel@tonic-gate for (i = 0; i < (try_lc ? 6 : 4); i++) {
7547c478bd9Sstevel@tonic-gate switch (i) {
7557c478bd9Sstevel@tonic-gate case 0:
7567c478bd9Sstevel@tonic-gate makekey(key, *pname, domain);
7577c478bd9Sstevel@tonic-gate break;
7587c478bd9Sstevel@tonic-gate case 1:
7597c478bd9Sstevel@tonic-gate makekey(key, wild, domain);
7607c478bd9Sstevel@tonic-gate break;
7617c478bd9Sstevel@tonic-gate case 2:
7627c478bd9Sstevel@tonic-gate makekey(key, *pname, wild);
7637c478bd9Sstevel@tonic-gate break;
7647c478bd9Sstevel@tonic-gate case 3:
7657c478bd9Sstevel@tonic-gate makekey(key, wild, wild);
7667c478bd9Sstevel@tonic-gate break;
7677c478bd9Sstevel@tonic-gate case 4:
7687c478bd9Sstevel@tonic-gate if (!makekey_lc(key, *pname, domain)) {
7697c478bd9Sstevel@tonic-gate try_lc = 0; /* Sleazy but effective */
7707c478bd9Sstevel@tonic-gate continue; /* i.e. quit looping */
7717c478bd9Sstevel@tonic-gate }
7727c478bd9Sstevel@tonic-gate break;
7737c478bd9Sstevel@tonic-gate case 5:
7747c478bd9Sstevel@tonic-gate (void) makekey_lc(key, *pname, wild);
7757c478bd9Sstevel@tonic-gate break;
7767c478bd9Sstevel@tonic-gate }
7777c478bd9Sstevel@tonic-gate *statusp = _nss_nis_ypmatch(be->domain, map, key,
7787c478bd9Sstevel@tonic-gate &val, &vallen, &yperr);
7797c478bd9Sstevel@tonic-gate if (*statusp == NSS_SUCCESS) {
7807c478bd9Sstevel@tonic-gate if (inlist(ia->groups.argc, ia->groups.argv, val)) {
7817c478bd9Sstevel@tonic-gate free(val);
7827c478bd9Sstevel@tonic-gate free(key);
7837c478bd9Sstevel@tonic-gate ia->status = NSS_NETGR_FOUND;
7847c478bd9Sstevel@tonic-gate return (1);
7857c478bd9Sstevel@tonic-gate } else {
7867c478bd9Sstevel@tonic-gate free(val);
7877c478bd9Sstevel@tonic-gate }
7887c478bd9Sstevel@tonic-gate } else {
7897c478bd9Sstevel@tonic-gate #ifdef DEBUG
7907c478bd9Sstevel@tonic-gate syslog(LOG_WARNING,
7917c478bd9Sstevel@tonic-gate "innetgr: yp_match(%s,%s) failed: %s",
7927c478bd9Sstevel@tonic-gate map, key, yperr_string(yperr));
7937c478bd9Sstevel@tonic-gate #endif /* DEBUG */
7947c478bd9Sstevel@tonic-gate if (yperr != YPERR_KEY) {
7957c478bd9Sstevel@tonic-gate free(key);
7967c478bd9Sstevel@tonic-gate return (0);
7977c478bd9Sstevel@tonic-gate }
7987c478bd9Sstevel@tonic-gate }
7997c478bd9Sstevel@tonic-gate }
8007c478bd9Sstevel@tonic-gate
8017c478bd9Sstevel@tonic-gate free(key);
8027c478bd9Sstevel@tonic-gate
8037c478bd9Sstevel@tonic-gate /* =====> is this (an authoritative "no") always the right thing to do? */
8047c478bd9Sstevel@tonic-gate /* Answer: yes, except for hostnames that aren't all lowercase */
8057c478bd9Sstevel@tonic-gate
806767b0abfSmichen *statusp = NSS_NOTFOUND; /* Yup, three different flavours of */
8077c478bd9Sstevel@tonic-gate ia->status = NSS_NETGR_NO; /* status information, so-called. */
8087c478bd9Sstevel@tonic-gate return (1); /* Silly, innit? */
8097c478bd9Sstevel@tonic-gate }
8107c478bd9Sstevel@tonic-gate
8117c478bd9Sstevel@tonic-gate
8127c478bd9Sstevel@tonic-gate static nss_status_t
netgr_in(be,a)8137c478bd9Sstevel@tonic-gate netgr_in(be, a)
8147c478bd9Sstevel@tonic-gate struct nis_netgr_be *be;
8157c478bd9Sstevel@tonic-gate void *a;
8167c478bd9Sstevel@tonic-gate {
817cb5caa98Sdjl struct nss_innetgr_args *ia = (struct nss_innetgr_args *)a;
8187c478bd9Sstevel@tonic-gate nss_status_t res;
8197c478bd9Sstevel@tonic-gate
8207c478bd9Sstevel@tonic-gate ia->status = NSS_NETGR_NO;
8217c478bd9Sstevel@tonic-gate
8227c478bd9Sstevel@tonic-gate /* Can we use netgroup.byhost or netgroup.byuser to speed things up? */
8237c478bd9Sstevel@tonic-gate
8247c478bd9Sstevel@tonic-gate /* ====> diddle this to try fast path for domains.argc == 0 too */
8257c478bd9Sstevel@tonic-gate if (ia->arg[NSS_NETGR_DOMAIN].argc == 1) {
8267c478bd9Sstevel@tonic-gate if (ia->arg[NSS_NETGR_MACHINE].argc == 0 &&
8277c478bd9Sstevel@tonic-gate ia->arg[NSS_NETGR_USER ].argc != 0) {
8287c478bd9Sstevel@tonic-gate if (easy_way(be, ia, &ia->arg[NSS_NETGR_USER],
8297c478bd9Sstevel@tonic-gate "netgroup.byuser", 0, &res)) {
8307c478bd9Sstevel@tonic-gate return (res);
8317c478bd9Sstevel@tonic-gate }
8327c478bd9Sstevel@tonic-gate } else if (ia->arg[NSS_NETGR_USER].argc == 0 &&
8337c478bd9Sstevel@tonic-gate ia->arg[NSS_NETGR_MACHINE].argc != 0) {
8347c478bd9Sstevel@tonic-gate if (easy_way(be, ia, &ia->arg[NSS_NETGR_MACHINE],
8357c478bd9Sstevel@tonic-gate "netgroup.byhost", 1, &res)) {
8367c478bd9Sstevel@tonic-gate return (res);
8377c478bd9Sstevel@tonic-gate }
8387c478bd9Sstevel@tonic-gate }
8397c478bd9Sstevel@tonic-gate }
8407c478bd9Sstevel@tonic-gate
8417c478bd9Sstevel@tonic-gate /* Nope, try the slow way */
8427c478bd9Sstevel@tonic-gate ia->status = NSS_NETGR_NO;
8437c478bd9Sstevel@tonic-gate res = top_down(be, (const char **)ia->groups.argv, ia->groups.argc,
8447c478bd9Sstevel@tonic-gate match_triple, ia);
8457c478bd9Sstevel@tonic-gate return (res);
8467c478bd9Sstevel@tonic-gate }
8477c478bd9Sstevel@tonic-gate
8487c478bd9Sstevel@tonic-gate
8497c478bd9Sstevel@tonic-gate /*
8507c478bd9Sstevel@tonic-gate * (Almost) boilerplate for a switch backend
8517c478bd9Sstevel@tonic-gate */
8527c478bd9Sstevel@tonic-gate
8537c478bd9Sstevel@tonic-gate /*ARGSUSED*/
854cb5caa98Sdjl static nss_status_t
netgr_destr(be,dummy)8557c478bd9Sstevel@tonic-gate netgr_destr(be, dummy)
8567c478bd9Sstevel@tonic-gate struct nis_netgr_be *be;
8577c478bd9Sstevel@tonic-gate void *dummy;
8587c478bd9Sstevel@tonic-gate {
8597c478bd9Sstevel@tonic-gate if (be != 0) {
8607c478bd9Sstevel@tonic-gate free(be);
8617c478bd9Sstevel@tonic-gate }
8627c478bd9Sstevel@tonic-gate return (NSS_SUCCESS);
8637c478bd9Sstevel@tonic-gate }
8647c478bd9Sstevel@tonic-gate
8657c478bd9Sstevel@tonic-gate static nis_netgr_op_t netgroup_ops[] = {
8667c478bd9Sstevel@tonic-gate netgr_destr,
8677c478bd9Sstevel@tonic-gate 0, /* No endent, because no setent/getent */
8687c478bd9Sstevel@tonic-gate 0, /* No setent; setnetgrent() is really a getXbyY() */
8697c478bd9Sstevel@tonic-gate 0, /* No getent in the normal sense */
8707c478bd9Sstevel@tonic-gate
8717c478bd9Sstevel@tonic-gate netgr_in, /* innetgr() */
8727c478bd9Sstevel@tonic-gate netgr_set, /* setnetgrent() */
8737c478bd9Sstevel@tonic-gate };
8747c478bd9Sstevel@tonic-gate
8757c478bd9Sstevel@tonic-gate /*ARGSUSED*/
8767c478bd9Sstevel@tonic-gate nss_backend_t *
_nss_nis_netgroup_constr(dummy1,dummy2,dummy3)8777c478bd9Sstevel@tonic-gate _nss_nis_netgroup_constr(dummy1, dummy2, dummy3)
8787c478bd9Sstevel@tonic-gate const char *dummy1, *dummy2, *dummy3;
8797c478bd9Sstevel@tonic-gate {
8807c478bd9Sstevel@tonic-gate const char *domain;
8817c478bd9Sstevel@tonic-gate struct nis_netgr_be *be;
8827c478bd9Sstevel@tonic-gate
8837c478bd9Sstevel@tonic-gate if ((domain = _nss_nis_domain()) == 0 ||
884cb5caa98Sdjl (be = (struct nis_netgr_be *)malloc(sizeof (*be))) == 0) {
8857c478bd9Sstevel@tonic-gate return (0);
8867c478bd9Sstevel@tonic-gate }
8877c478bd9Sstevel@tonic-gate be->ops = netgroup_ops;
8887c478bd9Sstevel@tonic-gate be->n_ops = sizeof (netgroup_ops) / sizeof (netgroup_ops[0]);
8897c478bd9Sstevel@tonic-gate be->domain = domain;
8907c478bd9Sstevel@tonic-gate
891cb5caa98Sdjl return ((nss_backend_t *)be);
8927c478bd9Sstevel@tonic-gate }
893