/* bind.c - decode an ldap bind operation and pass it to a backend db */
+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
/*
* Copyright (c) 1995 Regents of the University of Michigan.
#include <ac/string.h>
#include <ac/socket.h>
+#include "ldap_pvt.h"
#include "slap.h"
-void
+int
do_bind(
Connection *conn,
Operation *op
ber_int_t version;
ber_tag_t method;
char *mech;
- char *cdn, *ndn;
- ber_tag_t rc;
+ char *dn;
+ char *ndn;
+ ber_tag_t tag;
+ int rc = LDAP_SUCCESS;
+ const char *text;
struct berval cred;
Backend *be;
Debug( LDAP_DEBUG_TRACE, "do_bind\n", 0, 0, 0 );
+ dn = NULL;
+ ndn = NULL;
+ mech = NULL;
+ cred.bv_val = NULL;
+
+ ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+
+ /*
+ * Force to connection to "anonymous" until bind succeeds.
+ */
+
+ if ( conn->c_cdn != NULL ) {
+ free( conn->c_cdn );
+ conn->c_cdn = NULL;
+ }
+
+ if ( conn->c_dn != NULL ) {
+ free( conn->c_dn );
+ conn->c_dn = NULL;
+ }
+
+ conn->c_authc_backend = NULL;
+ conn->c_authz_backend = NULL;
+
+ ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+
+ if ( op->o_dn != NULL ) {
+ free( op->o_dn );
+ op->o_dn = ch_strdup( "" );
+ }
+
+ if ( op->o_ndn != NULL ) {
+ free( op->o_ndn );
+ op->o_ndn = ch_strdup( "" );
+ }
+
/*
* Parse the bind request. It looks like this:
*
* authentication CHOICE {
* simple [0] OCTET STRING -- passwd
* krbv42ldap [1] OCTET STRING
- * krbv42dsa [1] OCTET STRING
+ * krbv42dsa [2] OCTET STRING
+ * SASL [3] SaslCredentials
* }
+ * }
+ *
+ * SaslCredentials ::= SEQUENCE {
+ * mechanism LDAPString,
+ * credentials OCTET STRING OPTIONAL
* }
*/
- rc = ber_scanf( ber, "{iat" /*}*/, &version, &cdn, &method );
+ tag = ber_scanf( ber, "{iat" /*}*/, &version, &dn, &method );
- if ( rc == LBER_ERROR ) {
+ if ( tag == LBER_ERROR ) {
Debug( LDAP_DEBUG_ANY, "bind: ber_scanf failed\n", 0, 0, 0 );
- send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR, NULL,
- "decoding error" );
- return;
+ send_ldap_disconnect( conn, op,
+ LDAP_PROTOCOL_ERROR, "decoding error" );
+ rc = -1;
+ goto cleanup;
}
- mech = NULL;
- cred.bv_val = NULL;
+ op->o_protocol = version;
if( method != LDAP_AUTH_SASL ) {
- rc = ber_scanf( ber, /*{*/ "o}", &cred );
+ tag = ber_scanf( ber, /*{*/ "o}", &cred );
} else {
- rc = ber_scanf( ber, "{a" /*}*/, &mech );
+ tag = ber_scanf( ber, "{a" /*}*/, &mech );
- if ( rc != LBER_ERROR ) {
+ if ( tag != LBER_ERROR ) {
ber_len_t len;
- rc = ber_peek_tag( ber, &len );
+ tag = ber_peek_tag( ber, &len );
- if ( rc == LDAP_TAG_LDAPCRED ) {
- rc = ber_scanf( ber, "o", &cred );
+ if ( tag == LDAP_TAG_LDAPCRED ) {
+ tag = ber_scanf( ber, "o", &cred );
}
- if ( rc != LBER_ERROR ) {
- rc = ber_scanf( ber, /*{{*/ "}}" );
+ if ( tag != LBER_ERROR ) {
+ tag = ber_scanf( ber, /*{{*/ "}}" );
}
}
}
- if ( rc == LBER_ERROR ) {
- if ( cdn != NULL ) {
- free( cdn );
- }
- if ( mech != NULL ) {
- free( mech );
- }
- if ( cred.bv_val != NULL ) {
- free( cred.bv_val );
- }
-
- Debug( LDAP_DEBUG_ANY, "bind: ber_scanf failed\n", 0, 0, 0 );
- send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR, NULL,
+ if ( tag == LBER_ERROR ) {
+ send_ldap_disconnect( conn, op,
+ LDAP_PROTOCOL_ERROR,
"decoding error" );
-
- return;
+ rc = SLAPD_DISCONNECT;
+ goto cleanup;
}
-#ifdef GET_CTRLS
- if( get_ctrls( conn, op, 1 ) == -1 ) {
- if ( cdn != NULL ) {
- free( cdn );
- }
- if ( mech != NULL ) {
- free( mech );
- }
- if ( cred.bv_val != NULL ) {
- free( cred.bv_val );
- }
- Debug( LDAP_DEBUG_ANY, "do_add: get_ctrls failed\n", 0, 0, 0 );
- return;
+ if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY, "do_bind: get_ctrls failed\n", 0, 0, 0 );
+ goto cleanup;
}
-#endif
- Debug( LDAP_DEBUG_TRACE, "do_bind: version %d dn (%s) method %d\n",
- version, cdn, method );
+ ndn = ch_strdup( dn );
- ndn = dn_normalize_case( ch_strdup( cdn ) );
+ if ( dn_normalize( ndn ) == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "bind: invalid dn (%s)\n", dn, 0, 0 );
+ send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
+ "invalid DN", NULL, NULL );
+ goto cleanup;
+ }
+
+ if( method == LDAP_AUTH_SASL ) {
+ Debug( LDAP_DEBUG_TRACE, "do_sasl_bind: dn (%s) mech %s\n",
+ dn, mech, NULL );
+ } else {
+ Debug( LDAP_DEBUG_TRACE, "do_bind: version=%ld dn=\"%s\" method=%ld\n",
+ (unsigned long) version, dn, (unsigned long) method );
+ }
- Statslog( LDAP_DEBUG_STATS, "conn=%d op=%d BIND dn=\"%s\" method=%d\n",
- conn->c_connid, op->o_opid, ndn, method, 0 );
+ Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d BIND dn=\"%s\" method=%ld\n",
+ op->o_connid, op->o_opid, ndn, (unsigned long) method, 0 );
if ( version < LDAP_VERSION_MIN || version > LDAP_VERSION_MAX ) {
- if ( cdn != NULL ) {
- free( cdn );
- }
- if ( ndn != NULL ) {
- free( ndn );
+ Debug( LDAP_DEBUG_ANY, "do_bind: unknown version=%ld\n",
+ (unsigned long) version, 0, 0 );
+ send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
+ NULL, "requested protocol version not supported", NULL, NULL );
+ goto cleanup;
+ }
+
+ /* we set connection version regardless of whether bind succeeds
+ * or not.
+ */
+ ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+ conn->c_protocol = version;
+ ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+
+ if ( method == LDAP_AUTH_SASL ) {
+ char *edn;
+
+ if ( version < LDAP_VERSION3 ) {
+ Debug( LDAP_DEBUG_ANY, "do_bind: sasl with LDAPv%ld\n",
+ (unsigned long) version, 0, 0 );
+ send_ldap_disconnect( conn, op,
+ LDAP_PROTOCOL_ERROR, "SASL bind requires LDAPv3" );
+ rc = SLAPD_DISCONNECT;
+ goto cleanup;
}
- if ( mech != NULL ) {
- free( mech );
+
+ if( mech == NULL || *mech == '\0' ) {
+ Debug( LDAP_DEBUG_ANY,
+ "do_bind: no sasl mechanism provided\n",
+ 0, 0, 0 );
+ send_ldap_result( conn, op, rc = LDAP_AUTH_METHOD_NOT_SUPPORTED,
+ NULL, "no SASL mechanism provided", NULL, NULL );
+ goto cleanup;
}
- if ( cred.bv_val != NULL ) {
- free( cred.bv_val );
+
+ if( !charray_inlist( supportedSASLMechanisms, mech ) ) {
+ Debug( LDAP_DEBUG_ANY,
+ "do_bind: sasl mechanism=\"%s\" not supported.\n",
+ mech, 0, 0 );
+ send_ldap_result( conn, op, rc = LDAP_AUTH_METHOD_NOT_SUPPORTED,
+ NULL, "SASL mechanism not supported", NULL, NULL );
+ goto cleanup;
}
- Debug( LDAP_DEBUG_ANY, "unknown version %d\n", version, 0, 0 );
- send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR, NULL,
- "version not supported" );
- return;
- }
+ ldap_pvt_thread_mutex_lock( &conn->c_mutex );
- /* accept null binds */
- if ( ndn == NULL || *ndn == '\0' ) {
- if ( cdn != NULL ) {
- free( cdn );
- }
- if ( ndn != NULL ) {
- free( ndn );
- }
- if ( mech != NULL ) {
- free( mech );
+ if ( conn->c_sasl_bind_mech != NULL ) {
+ if((strcmp(conn->c_sasl_bind_mech, mech) != 0)) {
+ /* mechanism changed, cancel in progress bind */
+#ifdef HAVE_CYRUS_SASL
+ sasl_dispose(&conn->c_sasl_bind_context);
+ conn->c_sasl_bind_context = NULL;
+#endif
+ }
+ free( conn->c_sasl_bind_mech );
+ conn->c_sasl_bind_mech = NULL;
+
+#ifdef LDAP_DEBUG
+#ifdef HAVE_CYRUS_SASL
+ } else {
+ assert( conn->c_sasl_bind_context == NULL );
+#endif
+#endif
}
- if ( cred.bv_val != NULL ) {
- free( cred.bv_val );
+
+ ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+
+ edn = NULL;
+ rc = sasl_bind( conn, op, dn, ndn, mech, &cred, &edn );
+
+ if( rc == LDAP_SUCCESS ) {
+ ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+#ifdef HAVE_CYRUS_SASL
+ assert( conn->c_sasl_bind_context == NULL );
+#endif
+ conn->c_dn = edn;
+ ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+
+ } else if ( rc == LDAP_SASL_BIND_IN_PROGRESS ) {
+#ifdef HAVE_CYRUS_SASL
+ assert( conn->c_sasl_bind_context != NULL );
+#endif
+ conn->c_sasl_bind_mech = mech;
+ mech = NULL;
+
+#ifdef HAVE_CYRUS_SASL
+ } else {
+ assert( conn->c_sasl_bind_context != NULL );
+#endif
}
+ goto cleanup;
+
+ } else {
+ /* Not SASL, cancel any in-progress bind */
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
- conn->c_protocol = version;
+ if ( conn->c_sasl_bind_mech != NULL ) {
+ assert( conn->c_sasl_bind_in_progress );
- if ( conn->c_cdn != NULL ) {
- free( conn->c_cdn );
- conn->c_cdn = NULL;
- }
+ free(conn->c_sasl_bind_mech);
+ conn->c_sasl_bind_mech = NULL;
- if ( conn->c_dn != NULL ) {
- free( conn->c_dn );
- conn->c_dn = NULL;
+#ifdef HAVE_CYRUS_SASL
+ assert( conn->c_sasl_bind_context != NULL );
+ sasl_dispose(&conn->c_sasl_bind_context);
+ conn->c_sasl_bind_context = NULL;
+#endif
+ } else {
+ assert( !conn->c_sasl_bind_in_progress );
+#ifdef HAVE_CYRUS_SASL
+ assert( conn->c_sasl_bind_context == NULL );
+#endif
}
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+ }
- send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
- return;
+ /* accept "anonymous" binds */
+ if ( cred.bv_len == 0 || ndn == NULL || *ndn == '\0' ) {
+ /*
+ * we already forced connection to "anonymous",
+ * just need to send success
+ */
+ send_ldap_result( conn, op, LDAP_SUCCESS,
+ NULL, NULL, NULL, NULL );
+ Debug( LDAP_DEBUG_TRACE, "do_bind: v%d anonymous bind\n",
+ version, 0, 0 );
+ goto cleanup;
}
/*
*/
if ( (be = select_backend( ndn )) == NULL ) {
- free( cdn );
- free( ndn );
- if ( cred.bv_val != NULL ) {
- free( cred.bv_val );
- }
- if ( cred.bv_len == 0 ) {
- ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+ if ( default_referral ) {
+ send_ldap_result( conn, op, rc = LDAP_REFERRAL,
+ NULL, NULL, default_referral, NULL );
- conn->c_protocol = version;
+ } else {
+ /* noSuchObject is not allowed to be returned by bind */
+ send_ldap_result( conn, op, rc = LDAP_INVALID_CREDENTIALS,
+ NULL, NULL, NULL, NULL );
+ }
- if ( conn->c_cdn != NULL ) {
- free( conn->c_cdn );
- conn->c_cdn = NULL;
- }
+ goto cleanup;
+ }
- if ( conn->c_dn != NULL ) {
- free( conn->c_dn );
- conn->c_dn = NULL;
- }
+ conn->c_authz_backend = be;
- ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+ /* make sure this backend recongizes critical controls */
+ rc = backend_check_controls( be, conn, op, &text ) ;
- send_ldap_result( conn, op, LDAP_SUCCESS,
- NULL, NULL );
- } else if ( default_referral && *default_referral ) {
- send_ldap_result( conn, op, LDAP_PARTIAL_RESULTS,
- NULL, default_referral );
- } else {
- send_ldap_result( conn, op, LDAP_INVALID_CREDENTIALS,
- NULL, default_referral );
- }
- return;
+ if( rc != LDAP_SUCCESS ) {
+ send_ldap_result( conn, op, rc,
+ NULL, text, NULL, NULL );
+ goto cleanup;
}
if ( be->be_bind ) {
+ int ret;
/* alias suffix */
- char *edn;
-
- ndn = suffixAlias( ndn, op, be );
-
- if ( (*be->be_bind)( be, conn, op, ndn, method, mech, &cred, &edn ) == 0 ) {
- ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+ char *edn = NULL;
- conn->c_protocol = version;
+ /* deref suffix alias if appropriate */
+ ndn = suffix_alias( be, ndn );
- if ( conn->c_cdn != NULL ) {
- free( conn->c_cdn );
- }
+ ret = (*be->be_bind)( be, conn, op, dn, ndn,
+ method, &cred, &edn );
- conn->c_cdn = cdn;
- cdn = NULL;
+ if ( ret == 0 ) {
+ ldap_pvt_thread_mutex_lock( &conn->c_mutex );
- if ( conn->c_dn != NULL ) {
- free( conn->c_dn );
- }
+ conn->c_cdn = dn;
+ dn = NULL;
if(edn != NULL) {
conn->c_dn = edn;
ndn = NULL;
}
- Debug( LDAP_DEBUG_TRACE, "do_bind: bound \"%s\" to \"%s\"\n",
- conn->c_cdn, conn->c_dn, method );
+ Debug( LDAP_DEBUG_TRACE, "do_bind: v%d bind: \"%s\" to \"%s\"\n",
+ version, conn->c_cdn, conn->c_dn );
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
/* send this here to avoid a race condition */
- send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
+ send_ldap_result( conn, op, LDAP_SUCCESS,
+ NULL, NULL, NULL, NULL );
} else if (edn != NULL) {
free( edn );
}
} else {
- send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM, NULL,
- "Function not implemented" );
+ send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
+ NULL, "operation not supported within namingContext", NULL, NULL );
}
- if( cdn != NULL ) {
- free( cdn );
+cleanup:
+ if( dn != NULL ) {
+ free( dn );
}
if( ndn != NULL ) {
free( ndn );
if ( cred.bv_val != NULL ) {
free( cred.bv_val );
}
+
+ return rc;
}
projects / openldap / blobdiff