1 /* $NetBSD: unbind.c,v 1.1.1.6 2018/02/06 01:53:08 christos Exp $ */ 2 3 /* $OpenLDAP$ */ 4 /* This work is part of OpenLDAP Software <http://www.openldap.org/>. 5 * 6 * Copyright 1998-2017 The OpenLDAP Foundation. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted only as authorized by the OpenLDAP 11 * Public License. 12 * 13 * A copy of this license is available in the file LICENSE in the 14 * top-level directory of the distribution or, alternatively, at 15 * <http://www.OpenLDAP.org/license.html>. 16 */ 17 /* Portions Copyright (c) 1990 Regents of the University of Michigan. 18 * All rights reserved. 19 */ 20 21 #include <sys/cdefs.h> 22 __RCSID("$NetBSD: unbind.c,v 1.1.1.6 2018/02/06 01:53:08 christos Exp $"); 23 24 #include "portable.h" 25 26 #include <stdio.h> 27 #include <ac/stdlib.h> 28 29 #include <ac/socket.h> 30 #include <ac/string.h> 31 #include <ac/time.h> 32 33 #include "ldap-int.h" 34 35 /* An Unbind Request looks like this: 36 * 37 * UnbindRequest ::= [APPLICATION 2] NULL 38 * 39 * and has no response. (Source: RFC 4511) 40 */ 41 42 int 43 ldap_unbind_ext( 44 LDAP *ld, 45 LDAPControl **sctrls, 46 LDAPControl **cctrls ) 47 { 48 int rc; 49 50 assert( ld != NULL ); 51 assert( LDAP_VALID( ld ) ); 52 53 /* check client controls */ 54 rc = ldap_int_client_controls( ld, cctrls ); 55 if( rc != LDAP_SUCCESS ) return rc; 56 57 return ldap_ld_free( ld, 1, sctrls, cctrls ); 58 } 59 60 int 61 ldap_unbind_ext_s( 62 LDAP *ld, 63 LDAPControl **sctrls, 64 LDAPControl **cctrls ) 65 { 66 return ldap_unbind_ext( ld, sctrls, cctrls ); 67 } 68 69 int 70 ldap_unbind( LDAP *ld ) 71 { 72 Debug( LDAP_DEBUG_TRACE, "ldap_unbind\n", 0, 0, 0 ); 73 74 return( ldap_unbind_ext( ld, NULL, NULL ) ); 75 } 76 77 78 int 79 ldap_ld_free( 80 LDAP *ld, 81 int close, 82 LDAPControl **sctrls, 83 LDAPControl **cctrls ) 84 { 85 LDAPMessage *lm, *next; 86 int err = LDAP_SUCCESS; 87 88 LDAP_MUTEX_LOCK( &ld->ld_ldcmutex ); 89 /* Someone else is still using this ld. */ 90 if (ld->ld_ldcrefcnt > 1) { /* but not last thread */ 91 /* clean up self only */ 92 ld->ld_ldcrefcnt--; 93 if ( ld->ld_error != NULL ) { 94 LDAP_FREE( ld->ld_error ); 95 ld->ld_error = NULL; 96 } 97 98 if ( ld->ld_matched != NULL ) { 99 LDAP_FREE( ld->ld_matched ); 100 ld->ld_matched = NULL; 101 } 102 if ( ld->ld_referrals != NULL) { 103 LDAP_VFREE(ld->ld_referrals); 104 ld->ld_referrals = NULL; 105 } 106 LDAP_MUTEX_UNLOCK( &ld->ld_ldcmutex ); 107 LDAP_FREE( (char *) ld ); 108 return( err ); 109 } 110 111 /* This ld is the last thread. */ 112 LDAP_MUTEX_UNLOCK( &ld->ld_ldcmutex ); 113 114 /* free LDAP structure and outstanding requests/responses */ 115 LDAP_MUTEX_LOCK( &ld->ld_req_mutex ); 116 while ( ld->ld_requests != NULL ) { 117 ldap_free_request( ld, ld->ld_requests ); 118 } 119 LDAP_MUTEX_UNLOCK( &ld->ld_req_mutex ); 120 LDAP_MUTEX_LOCK( &ld->ld_conn_mutex ); 121 122 /* free and unbind from all open connections */ 123 while ( ld->ld_conns != NULL ) { 124 ldap_free_connection( ld, ld->ld_conns, 1, close ); 125 } 126 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex ); 127 LDAP_MUTEX_LOCK( &ld->ld_res_mutex ); 128 for ( lm = ld->ld_responses; lm != NULL; lm = next ) { 129 next = lm->lm_next; 130 ldap_msgfree( lm ); 131 } 132 133 if ( ld->ld_abandoned != NULL ) { 134 LDAP_FREE( ld->ld_abandoned ); 135 ld->ld_abandoned = NULL; 136 } 137 LDAP_MUTEX_UNLOCK( &ld->ld_res_mutex ); 138 139 ber_sockbuf_free( ld->ld_sb ); 140 141 LDAP_MUTEX_LOCK( &ld->ld_ldopts_mutex ); 142 143 /* final close callbacks */ 144 { 145 ldaplist *ll, *next; 146 147 for ( ll = ld->ld_options.ldo_conn_cbs; ll; ll = next ) { 148 ldap_conncb *cb = ll->ll_data; 149 next = ll->ll_next; 150 cb->lc_del( ld, NULL, cb ); 151 LDAP_FREE( ll ); 152 } 153 } 154 155 if ( ld->ld_error != NULL ) { 156 LDAP_FREE( ld->ld_error ); 157 ld->ld_error = NULL; 158 } 159 160 if ( ld->ld_matched != NULL ) { 161 LDAP_FREE( ld->ld_matched ); 162 ld->ld_matched = NULL; 163 } 164 165 if ( ld->ld_referrals != NULL) { 166 LDAP_VFREE(ld->ld_referrals); 167 ld->ld_referrals = NULL; 168 } 169 170 if ( ld->ld_selectinfo != NULL ) { 171 ldap_free_select_info( ld->ld_selectinfo ); 172 ld->ld_selectinfo = NULL; 173 } 174 175 if ( ld->ld_options.ldo_defludp != NULL ) { 176 ldap_free_urllist( ld->ld_options.ldo_defludp ); 177 ld->ld_options.ldo_defludp = NULL; 178 } 179 180 #ifdef LDAP_CONNECTIONLESS 181 if ( ld->ld_options.ldo_peer != NULL ) { 182 LDAP_FREE( ld->ld_options.ldo_peer ); 183 ld->ld_options.ldo_peer = NULL; 184 } 185 186 if ( ld->ld_options.ldo_cldapdn != NULL ) { 187 LDAP_FREE( ld->ld_options.ldo_cldapdn ); 188 ld->ld_options.ldo_cldapdn = NULL; 189 } 190 #endif 191 192 #ifdef HAVE_CYRUS_SASL 193 if ( ld->ld_options.ldo_def_sasl_mech != NULL ) { 194 LDAP_FREE( ld->ld_options.ldo_def_sasl_mech ); 195 ld->ld_options.ldo_def_sasl_mech = NULL; 196 } 197 198 if ( ld->ld_options.ldo_def_sasl_realm != NULL ) { 199 LDAP_FREE( ld->ld_options.ldo_def_sasl_realm ); 200 ld->ld_options.ldo_def_sasl_realm = NULL; 201 } 202 203 if ( ld->ld_options.ldo_def_sasl_authcid != NULL ) { 204 LDAP_FREE( ld->ld_options.ldo_def_sasl_authcid ); 205 ld->ld_options.ldo_def_sasl_authcid = NULL; 206 } 207 208 if ( ld->ld_options.ldo_def_sasl_authzid != NULL ) { 209 LDAP_FREE( ld->ld_options.ldo_def_sasl_authzid ); 210 ld->ld_options.ldo_def_sasl_authzid = NULL; 211 } 212 #endif 213 214 #ifdef HAVE_TLS 215 ldap_int_tls_destroy( &ld->ld_options ); 216 #endif 217 218 if ( ld->ld_options.ldo_sctrls != NULL ) { 219 ldap_controls_free( ld->ld_options.ldo_sctrls ); 220 ld->ld_options.ldo_sctrls = NULL; 221 } 222 223 if ( ld->ld_options.ldo_cctrls != NULL ) { 224 ldap_controls_free( ld->ld_options.ldo_cctrls ); 225 ld->ld_options.ldo_cctrls = NULL; 226 } 227 LDAP_MUTEX_UNLOCK( &ld->ld_ldopts_mutex ); 228 229 #ifdef LDAP_R_COMPILE 230 ldap_pvt_thread_mutex_destroy( &ld->ld_msgid_mutex ); 231 ldap_pvt_thread_mutex_destroy( &ld->ld_conn_mutex ); 232 ldap_pvt_thread_mutex_destroy( &ld->ld_req_mutex ); 233 ldap_pvt_thread_mutex_destroy( &ld->ld_res_mutex ); 234 ldap_pvt_thread_mutex_destroy( &ld->ld_abandon_mutex ); 235 ldap_pvt_thread_mutex_destroy( &ld->ld_ldopts_mutex ); 236 ldap_pvt_thread_mutex_destroy( &ld->ld_ldcmutex ); 237 #endif 238 #ifndef NDEBUG 239 LDAP_TRASH(ld); 240 #endif 241 LDAP_FREE( (char *) ld->ldc ); 242 LDAP_FREE( (char *) ld ); 243 244 return( err ); 245 } 246 247 int 248 ldap_destroy( LDAP *ld ) 249 { 250 return ( ldap_ld_free( ld, 1, NULL, NULL ) ); 251 } 252 253 int 254 ldap_unbind_s( LDAP *ld ) 255 { 256 return( ldap_unbind_ext( ld, NULL, NULL ) ); 257 } 258 259 /* FIXME: this function is called only by ldap_free_connection(), 260 * which, most of the times, is called with ld_req_mutex locked */ 261 int 262 ldap_send_unbind( 263 LDAP *ld, 264 Sockbuf *sb, 265 LDAPControl **sctrls, 266 LDAPControl **cctrls ) 267 { 268 BerElement *ber; 269 ber_int_t id; 270 271 Debug( LDAP_DEBUG_TRACE, "ldap_send_unbind\n", 0, 0, 0 ); 272 273 #ifdef LDAP_CONNECTIONLESS 274 if (LDAP_IS_UDP(ld)) 275 return LDAP_SUCCESS; 276 #endif 277 /* create a message to send */ 278 if ( (ber = ldap_alloc_ber_with_options( ld )) == NULL ) { 279 return( ld->ld_errno ); 280 } 281 282 LDAP_NEXT_MSGID(ld, id); 283 284 /* fill it in */ 285 if ( ber_printf( ber, "{itn" /*}*/, id, 286 LDAP_REQ_UNBIND ) == -1 ) { 287 ld->ld_errno = LDAP_ENCODING_ERROR; 288 ber_free( ber, 1 ); 289 return( ld->ld_errno ); 290 } 291 292 /* Put Server Controls */ 293 if( ldap_int_put_controls( ld, sctrls, ber ) != LDAP_SUCCESS ) { 294 ber_free( ber, 1 ); 295 return ld->ld_errno; 296 } 297 298 if ( ber_printf( ber, /*{*/ "N}", LDAP_REQ_UNBIND ) == -1 ) { 299 ld->ld_errno = LDAP_ENCODING_ERROR; 300 ber_free( ber, 1 ); 301 return( ld->ld_errno ); 302 } 303 304 ld->ld_errno = LDAP_SUCCESS; 305 /* send the message */ 306 if ( ber_flush2( sb, ber, LBER_FLUSH_FREE_ALWAYS ) == -1 ) { 307 ld->ld_errno = LDAP_SERVER_DOWN; 308 } 309 310 return( ld->ld_errno ); 311 } 312