1 /* bind.c - decode an ldap bind operation and pass it to a backend db */
4 * Copyright (c) 1995 Regents of the University of Michigan.
7 * Redistribution and use in source and binary forms are permitted
8 * provided that this notice is preserved and that due credit is given
9 * to the University of Michigan at Ann Arbor. The name of the University
10 * may not be used to endorse or promote products derived from this
11 * software without specific prior written permission. This software
12 * is provided ``as is'' without express or implied warranty.
19 #include <ac/string.h>
20 #include <ac/socket.h>
30 BerElement *ber = op->o_ber;
38 Debug( LDAP_DEBUG_TRACE, "do_bind\n", 0, 0, 0 );
41 * Parse the bind request. It looks like this:
43 * BindRequest ::= SEQUENCE {
44 * version INTEGER, -- version
45 * name DistinguishedName, -- dn
46 * authentication CHOICE {
47 * simple [0] OCTET STRING -- passwd
48 * krbv42ldap [1] OCTET STRING
49 * krbv42dsa [1] OCTET STRING
56 * in version 3.0 there is an extra SEQUENCE tag after the
57 * BindRequest SEQUENCE tag.
65 tber = ber_dup( op->o_ber );
66 ttag = ber_skip_tag( tber, &tlen );
67 if ( ber_peek_tag( tber, &tlen ) == LBER_SEQUENCE ) {
68 Debug( LDAP_DEBUG_ANY, "bind: u-mich v3.0 detected\n", 0, 0, 0 );
70 rc = ber_scanf(ber, "{{iato}}", &version, &cdn, &method, &cred);
72 rc = ber_scanf( ber, "{iato}", &version, &cdn, &method, &cred );
78 rc = ber_scanf( ber, "{iato}", &version, &cdn, &method, &cred );
81 if ( rc == LBER_ERROR ) {
82 Debug( LDAP_DEBUG_ANY, "bind: ber_scanf failed\n", 0, 0, 0 );
83 send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR, NULL,
89 if ( conn->c_version == 30 ) {
91 case LDAP_AUTH_SIMPLE_30:
92 method = LDAP_AUTH_SIMPLE;
95 case LDAP_AUTH_KRBV41_30:
96 method = LDAP_AUTH_KRBV41;
98 case LDAP_AUTH_KRBV42_30:
99 method = LDAP_AUTH_KRBV42;
104 #endif /* compat30 */
106 Debug( LDAP_DEBUG_TRACE, "do_bind: version %d dn (%s) method %d\n",
107 version, cdn, method );
109 ndn = dn_normalize_case( ch_strdup( cdn ) );
111 Statslog( LDAP_DEBUG_STATS, "conn=%d op=%d BIND dn=\"%s\" method=%d\n",
112 conn->c_connid, op->o_opid, ndn, method, 0 );
114 if ( version != LDAP_VERSION2 ) {
121 if ( cred.bv_val != NULL ) {
125 Debug( LDAP_DEBUG_ANY, "unknown version %d\n", version, 0, 0 );
126 send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR, NULL,
127 "version not supported" );
131 /* accept null binds */
132 if ( ndn == NULL || *ndn == '\0' ) {
139 if ( cred.bv_val != NULL ) {
143 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
145 conn->c_protocol = version;
147 if ( conn->c_cdn != NULL ) {
152 if ( conn->c_dn != NULL ) {
157 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
159 send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
164 * We could be serving multiple database backends. Select the
165 * appropriate one, or send a referral to our "referral server"
166 * if we don't hold it.
169 if ( (be = select_backend( ndn )) == NULL ) {
172 if ( cred.bv_val != NULL ) {
175 if ( cred.bv_len == 0 ) {
176 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
178 conn->c_protocol = version;
180 if ( conn->c_cdn != NULL ) {
185 if ( conn->c_dn != NULL ) {
190 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
192 send_ldap_result( conn, op, LDAP_SUCCESS,
194 } else if ( default_referral && *default_referral ) {
195 send_ldap_result( conn, op, LDAP_PARTIAL_RESULTS,
196 NULL, default_referral );
198 send_ldap_result( conn, op, LDAP_INVALID_CREDENTIALS,
199 NULL, default_referral );
208 ndn = suffixAlias( ndn, op, be );
210 if ( (*be->be_bind)( be, conn, op, ndn, method, &cred, &edn ) == 0 ) {
211 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
213 conn->c_protocol = version;
215 if ( conn->c_cdn != NULL ) {
222 if ( conn->c_dn != NULL ) {
233 Debug( LDAP_DEBUG_TRACE, "do_bind: bound \"%s\" to \"%s\"\n",
234 conn->c_cdn, conn->c_dn, method );
236 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
238 /* send this here to avoid a race condition */
239 send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
241 } else if (edn != NULL) {
246 send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM, NULL,
247 "Function not implemented" );
256 if ( cred.bv_val != NULL ) {