1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright (c) 2001 by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate * All rights reserved.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate #include <poll.h>
31*0Sstevel@tonic-gate #include <sys/time.h>
32*0Sstevel@tonic-gate #include <stdlib.h>
33*0Sstevel@tonic-gate #include "nis_ldap.h"
34*0Sstevel@tonic-gate #include "nis_hashitem.h"
35*0Sstevel@tonic-gate #include "ldap_map.h"
36*0Sstevel@tonic-gate #include "ldap_parse.h"
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate
39*0Sstevel@tonic-gate /*
40*0Sstevel@tonic-gate * Global structure keeping config state. Since it's created and modified
41*0Sstevel@tonic-gate * while the rpc.nisd still is single-threaded, and only read in MT mode,
42*0Sstevel@tonic-gate * no locking is needed.
43*0Sstevel@tonic-gate */
44*0Sstevel@tonic-gate __nis_config_t ldapConfig = {
45*0Sstevel@tonic-gate ini_none, /* nisplusLDAPinitialUpdate */
46*0Sstevel@tonic-gate pass_error, /* nisplusLDAPthreadCreationError */
47*0Sstevel@tonic-gate {
48*0Sstevel@tonic-gate -1, /* Try forever */
49*0Sstevel@tonic-gate 15 /* 15 second timeout */
50*0Sstevel@tonic-gate },
51*0Sstevel@tonic-gate de_retry, /* nisplusLDAPdumpError */
52*0Sstevel@tonic-gate {
53*0Sstevel@tonic-gate -1, /* Try forever */
54*0Sstevel@tonic-gate 200 /* 200 second timeout */
55*0Sstevel@tonic-gate },
56*0Sstevel@tonic-gate directory_locked, /* nisplusLDAPresyncService */
57*0Sstevel@tonic-gate accumulate, /* nisplusLDAPupdateBatching */
58*0Sstevel@tonic-gate {
59*0Sstevel@tonic-gate -1, /* Not used */
60*0Sstevel@tonic-gate 120 /* Accumulate for 120 seconds */
61*0Sstevel@tonic-gate },
62*0Sstevel@tonic-gate block /* nisplusLDAPexclusiveWaitMOde */
63*0Sstevel@tonic-gate };
64*0Sstevel@tonic-gate
65*0Sstevel@tonic-gate
66*0Sstevel@tonic-gate /*
67*0Sstevel@tonic-gate * Utility function that accepts a (__nisdb_retry_t *), decrements the
68*0Sstevel@tonic-gate * 'attempts' counter, and sleeps for 'timeout' seconds.
69*0Sstevel@tonic-gate *
70*0Sstevel@tonic-gate * NOTE: Don't pass a pointer into the 'ldapConfig' structure to
71*0Sstevel@tonic-gate * this function. Instead, initialize a private copy to the
72*0Sstevel@tonic-gate * value from 'ldapConfig'.
73*0Sstevel@tonic-gate *
74*0Sstevel@tonic-gate * The value of 'attempts' upon entry determines action as follows:
75*0Sstevel@tonic-gate *
76*0Sstevel@tonic-gate * < 0 Don't change 'attempts', sleep as indicated, return 1
77*0Sstevel@tonic-gate *
78*0Sstevel@tonic-gate * 0 Don't change 'attempts', only sleep if forceSleep is set,
79*0Sstevel@tonic-gate * return 0 if we didn't sleep, 1 if we slept.
80*0Sstevel@tonic-gate *
81*0Sstevel@tonic-gate * > 0 Decrement 'attempts', sleep as indicated, return 1
82*0Sstevel@tonic-gate */
83*0Sstevel@tonic-gate int
__nis_retry_sleep(__nisdb_retry_t * retry,int forceSleep)84*0Sstevel@tonic-gate __nis_retry_sleep(__nisdb_retry_t *retry, int forceSleep) {
85*0Sstevel@tonic-gate
86*0Sstevel@tonic-gate if (retry == NULL)
87*0Sstevel@tonic-gate return (0);
88*0Sstevel@tonic-gate
89*0Sstevel@tonic-gate if (retry->attempts > 0) {
90*0Sstevel@tonic-gate retry->attempts -= 1;
91*0Sstevel@tonic-gate } else if (retry->attempts == 0 && !forceSleep) {
92*0Sstevel@tonic-gate return (0);
93*0Sstevel@tonic-gate }
94*0Sstevel@tonic-gate
95*0Sstevel@tonic-gate (void) poll(NULL, 0, retry->timeout*1000);
96*0Sstevel@tonic-gate
97*0Sstevel@tonic-gate return (1);
98*0Sstevel@tonic-gate }
99*0Sstevel@tonic-gate
100*0Sstevel@tonic-gate /*
101*0Sstevel@tonic-gate * The root directory is special in NIS+; it's the only directory that
102*0Sstevel@tonic-gate * doesn't appear as an entry in another directory. Hence, our method
103*0Sstevel@tonic-gate * of keeping the directory/table entry expiration time in the
104*0Sstevel@tonic-gate * directory/table doesn't work, and we instead implement the following
105*0Sstevel@tonic-gate * interface.
106*0Sstevel@tonic-gate */
107*0Sstevel@tonic-gate static time_t rootDirExpire = 0;
108*0Sstevel@tonic-gate static int rootDirTtl = 0;
109*0Sstevel@tonic-gate
110*0Sstevel@tonic-gate /*
111*0Sstevel@tonic-gate * Return 1 if the root dir has expired, 0 otherwise.
112*0Sstevel@tonic-gate */
113*0Sstevel@tonic-gate int
rootDirExpired(void)114*0Sstevel@tonic-gate rootDirExpired(void) {
115*0Sstevel@tonic-gate struct timeval now;
116*0Sstevel@tonic-gate
117*0Sstevel@tonic-gate (void) gettimeofday(&now, 0);
118*0Sstevel@tonic-gate
119*0Sstevel@tonic-gate if (rootDirExpire >= now.tv_sec)
120*0Sstevel@tonic-gate return (1);
121*0Sstevel@tonic-gate else
122*0Sstevel@tonic-gate return (0);
123*0Sstevel@tonic-gate }
124*0Sstevel@tonic-gate
125*0Sstevel@tonic-gate /*
126*0Sstevel@tonic-gate * Update the expiration time of the root dir to be now plus the TTL.
127*0Sstevel@tonic-gate * Also establishes the TTL if not set.
128*0Sstevel@tonic-gate */
129*0Sstevel@tonic-gate int
touchRootDir(void)130*0Sstevel@tonic-gate touchRootDir(void) {
131*0Sstevel@tonic-gate struct timeval now;
132*0Sstevel@tonic-gate int ttl;
133*0Sstevel@tonic-gate
134*0Sstevel@tonic-gate (void) gettimeofday(&now, 0);
135*0Sstevel@tonic-gate
136*0Sstevel@tonic-gate /* Do we need to initialize the TTL ? */
137*0Sstevel@tonic-gate if (rootDirTtl == 0) {
138*0Sstevel@tonic-gate __nis_table_mapping_t *t;
139*0Sstevel@tonic-gate
140*0Sstevel@tonic-gate t = __nis_find_item_mt(ROOTDIRFILE, &ldapMappingList, 0, 0);
141*0Sstevel@tonic-gate if (t != 0) {
142*0Sstevel@tonic-gate int interval;
143*0Sstevel@tonic-gate
144*0Sstevel@tonic-gate interval = t->initTtlHi - t->initTtlLo + 1;
145*0Sstevel@tonic-gate
146*0Sstevel@tonic-gate if (interval > 1) {
147*0Sstevel@tonic-gate srand48(now.tv_sec);
148*0Sstevel@tonic-gate ttl = (lrand48() % interval);
149*0Sstevel@tonic-gate } else {
150*0Sstevel@tonic-gate ttl = t->initTtlLo;
151*0Sstevel@tonic-gate }
152*0Sstevel@tonic-gate
153*0Sstevel@tonic-gate rootDirTtl = t->ttl;
154*0Sstevel@tonic-gate } else {
155*0Sstevel@tonic-gate ttl = rootDirTtl = 3600;
156*0Sstevel@tonic-gate }
157*0Sstevel@tonic-gate } else {
158*0Sstevel@tonic-gate ttl = rootDirTtl;
159*0Sstevel@tonic-gate }
160*0Sstevel@tonic-gate
161*0Sstevel@tonic-gate rootDirExpire = now.tv_sec + ttl;
162*0Sstevel@tonic-gate
163*0Sstevel@tonic-gate return (0);
164*0Sstevel@tonic-gate }
165