1 /*
2  * Copyright 2002-2003 Sun Microsystems, Inc.  All rights reserved.
3  * Use is subject to license terms.
4  */
5 
6 /*
7  * The contents of this file are subject to the Netscape Public
8  * License Version 1.1 (the "License"); you may not use this file
9  * except in compliance with the License. You may obtain a copy of
10  * the License at http://www.mozilla.org/NPL/
11  *
12  * Software distributed under the License is distributed on an "AS
13  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14  * implied. See the License for the specific language governing
15  * rights and limitations under the License.
16  *
17  * The Original Code is Mozilla Communicator client code, released
18  * March 31, 1998.
19  *
20  * The Initial Developer of the Original Code is Netscape
21  * Communications Corporation. Portions created by Netscape are
22  * Copyright (C) 1998-1999 Netscape Communications Corporation. All
23  * Rights Reserved.
24  *
25  * Contributor(s):
26  */
27 /*
28  *  Copyright (c) 1990 Regents of the University of Michigan.
29  *  All rights reserved.
30  */
31 
32 /*
33  *  unbind.c
34  */
35 
36 #if 0
37 #ifndef lint
38 static char copyright[] = "@(#) Copyright (c) 1990 Regents of the University of Michigan.\nAll rights reserved.\n";
39 #endif
40 #endif
41 
42 #include "ldap-int.h"
43 
44 int
45 LDAP_CALL
ldap_unbind(LDAP * ld)46 ldap_unbind( LDAP *ld )
47 {
48 	LDAPDebug( LDAP_DEBUG_TRACE, "ldap_unbind\n", 0, 0, 0 );
49 
50 	return( ldap_ld_free( ld, NULL, NULL, 1 ) );
51 }
52 
53 
54 int
55 LDAP_CALL
ldap_unbind_s(LDAP * ld)56 ldap_unbind_s( LDAP *ld )
57 {
58 	return( ldap_ld_free( ld, NULL, NULL, 1 ));
59 }
60 
61 
62 int
63 LDAP_CALL
ldap_unbind_ext(LDAP * ld,LDAPControl ** serverctrls,LDAPControl ** clientctrls)64 ldap_unbind_ext( LDAP *ld, LDAPControl **serverctrls,
65     LDAPControl **clientctrls )
66 {
67 	return( ldap_ld_free( ld, serverctrls, clientctrls, 1 ));
68 }
69 
70 
71 /*
72  * Dispose of the LDAP session ld, including all associated connections
73  * and resources.  If close is non-zero, an unbind() request is sent as well.
74  */
75 int
ldap_ld_free(LDAP * ld,LDAPControl ** serverctrls,LDAPControl ** clientctrls,int close)76 ldap_ld_free( LDAP *ld, LDAPControl **serverctrls,
77     LDAPControl **clientctrls, int close )
78 {
79 	LDAPMessage	*lm, *next;
80 	int		err = LDAP_SUCCESS;
81 	LDAPRequest	*lr, *nextlr;
82 
83 	if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
84 		return( LDAP_PARAM_ERROR );
85 	}
86 
87 	if ( ld->ld_sbp->sb_naddr == 0 ) {
88 		LDAP_MUTEX_LOCK( ld, LDAP_REQ_LOCK );
89 		/* free LDAP structure and outstanding requests/responses */
90 		for ( lr = ld->ld_requests; lr != NULL; lr = nextlr ) {
91 			nextlr = lr->lr_next;
92 			nsldapi_free_request( ld, lr, 0 );
93 		}
94 		LDAP_MUTEX_UNLOCK( ld, LDAP_REQ_LOCK );
95 
96 		/* free and unbind from all open connections */
97 		LDAP_MUTEX_LOCK( ld, LDAP_CONN_LOCK );
98 		while ( ld->ld_conns != NULL ) {
99 			nsldapi_free_connection( ld, ld->ld_conns, serverctrls,
100 			    clientctrls, 1, close );
101 		}
102 		LDAP_MUTEX_UNLOCK( ld, LDAP_CONN_LOCK );
103 
104 	} else {
105 		int	i;
106 
107 		for ( i = 0; i < ld->ld_sbp->sb_naddr; ++i ) {
108 			NSLDAPI_FREE( ld->ld_sbp->sb_addrs[ i ] );
109 		}
110 		NSLDAPI_FREE( ld->ld_sbp->sb_addrs );
111 		NSLDAPI_FREE( ld->ld_sbp->sb_fromaddr );
112 	}
113 
114 	LDAP_MUTEX_LOCK( ld, LDAP_RESP_LOCK );
115 	for ( lm = ld->ld_responses; lm != NULL; lm = next ) {
116 		next = lm->lm_next;
117 		ldap_msgfree( lm );
118 	}
119 	LDAP_MUTEX_UNLOCK( ld, LDAP_RESP_LOCK );
120 
121 	/* call cache unbind function to allow it to clean up after itself */
122 	if ( ld->ld_cache_unbind != NULL ) {
123 		LDAP_MUTEX_LOCK( ld, LDAP_CACHE_LOCK );
124 		(void)ld->ld_cache_unbind( ld, 0, 0 );
125 		LDAP_MUTEX_UNLOCK( ld, LDAP_CACHE_LOCK );
126 	}
127 
128 	/* call the dispose handle I/O callback if one is defined */
129 	if ( ld->ld_extdisposehandle_fn != NULL ) {
130 	    /*
131 	     * We always pass the session extended I/O argument to
132 	     * the dispose handle callback.
133 	     */
134 	    ld->ld_extdisposehandle_fn( ld, ld->ld_ext_session_arg );
135 	}
136 
137 	if ( ld->ld_error != NULL )
138 		NSLDAPI_FREE( ld->ld_error );
139 	if ( ld->ld_matched != NULL )
140 		NSLDAPI_FREE( ld->ld_matched );
141 	if ( ld->ld_host != NULL )
142 		NSLDAPI_FREE( ld->ld_host );
143 	if ( ld->ld_ufnprefix != NULL )
144 		NSLDAPI_FREE( ld->ld_ufnprefix );
145 	if ( ld->ld_filtd != NULL )
146 		ldap_getfilter_free( ld->ld_filtd );
147 	if ( ld->ld_abandoned != NULL )
148 		NSLDAPI_FREE( ld->ld_abandoned );
149 	if ( ld->ld_sbp != NULL )
150 		ber_sockbuf_free( ld->ld_sbp );
151 	if ( ld->ld_defhost != NULL )
152 		NSLDAPI_FREE( ld->ld_defhost );
153 	if ( ld->ld_servercontrols != NULL )
154 		ldap_controls_free( ld->ld_servercontrols );
155 	if ( ld->ld_clientcontrols != NULL )
156 		ldap_controls_free( ld->ld_clientcontrols );
157 	if ( ld->ld_preferred_language != NULL )
158 		NSLDAPI_FREE( ld->ld_preferred_language );
159 	nsldapi_iostatus_free( ld );
160 #ifdef LDAP_SASLIO_HOOKS
161 	if ( ld->ld_def_sasl_mech != NULL )
162 		NSLDAPI_FREE( ld->ld_def_sasl_mech );
163 	if ( ld->ld_def_sasl_realm != NULL )
164 		NSLDAPI_FREE( ld->ld_def_sasl_realm );
165 	if ( ld->ld_def_sasl_authcid != NULL )
166 		NSLDAPI_FREE( ld->ld_def_sasl_authcid );
167 	if ( ld->ld_def_sasl_authzid != NULL )
168 		NSLDAPI_FREE( ld->ld_def_sasl_authzid );
169 #endif
170 
171 	/*
172 	 * XXXmcs: should use cache function pointers to hook in memcache
173 	 */
174 	if ( ld->ld_memcache != NULL ) {
175 		ldap_memcache_set( ld, NULL );
176 	}
177 
178         /* free all mutexes we have allocated */
179         nsldapi_mutex_free_all( ld );
180         NSLDAPI_FREE( ld->ld_mutex );
181 
182         NSLDAPI_FREE( (char *) ld );
183 
184 	return( err );
185 }
186 
187 
188 
189 int
nsldapi_send_unbind(LDAP * ld,Sockbuf * sb,LDAPControl ** serverctrls,LDAPControl ** clientctrls)190 nsldapi_send_unbind( LDAP *ld, Sockbuf *sb, LDAPControl **serverctrls,
191     LDAPControl **clientctrls )
192 {
193 	BerElement	*ber;
194 	int		err, msgid;
195 
196 	LDAPDebug( LDAP_DEBUG_TRACE, "nsldapi_send_unbind\n", 0, 0, 0 );
197 
198 	/* create a message to send */
199 	if (( err = nsldapi_alloc_ber_with_options( ld, &ber ))
200 	    != LDAP_SUCCESS ) {
201 		return( err );
202 	}
203 
204 	/* fill it in */
205 	LDAP_MUTEX_LOCK( ld, LDAP_MSGID_LOCK );
206 	msgid = ++ld->ld_msgid;
207 	LDAP_MUTEX_UNLOCK( ld, LDAP_MSGID_LOCK );
208 
209 	if ( ber_printf( ber, "{itn", msgid, LDAP_REQ_UNBIND ) == -1 ) {
210 		ber_free( ber, 1 );
211 		err = LDAP_ENCODING_ERROR;
212 		LDAP_SET_LDERRNO( ld, err, NULL, NULL );
213 		return( err );
214 	}
215 
216 	if (( err = nsldapi_put_controls( ld, serverctrls, 1, ber ))
217 	    != LDAP_SUCCESS ) {
218 		ber_free( ber, 1 );
219 		return( err );
220 	}
221 
222 	/* send the message */
223 	if ( nsldapi_ber_flush( ld, sb, ber, 1, 0 ) != 0 ) {
224 		ber_free( ber, 1 );
225 		err = LDAP_SERVER_DOWN;
226 		LDAP_SET_LDERRNO( ld, err, NULL, NULL );
227 		return( err );
228 	}
229 
230 	return( LDAP_SUCCESS );
231 }
232