/* bind.c - ldap backend bind function */
/* $OpenLDAP$ */
-/*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
- */
-/* This is an altered version */
-/*
- * Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
- *
- * Permission is granted to anyone to use this software for any purpose
- * on any computer system, and to alter it and redistribute it, subject
- * to the following restrictions:
- *
- * 1. The author is not responsible for the consequences of use of this
- * software, no matter how awful, even if they arise from flaws in it.
- *
- * 2. The origin of this software must not be misrepresented, either by
- * explicit claim or by omission. Since few users ever read sources,
- * credits should appear in the documentation.
- *
- * 3. Altered versions must be plainly marked as such, and must not be
- * misrepresented as being the original software. Since few users
- * ever read sources, credits should appear in the documentation.
- *
- * 4. This notice may not be removed or altered.
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
+ * Copyright 1999-2005 The OpenLDAP Foundation.
+ * Portions Copyright 2000-2003 Pierangelo Masarati.
+ * Portions Copyright 1999-2003 Howard Chu.
+ * All rights reserved.
*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
*
- * Copyright 2000, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
- *
- * This software is being modified by Pierangelo Masarati.
- * The previously reported conditions apply to the modified code as well.
- * Changes in the original code are highlighted where required.
- * Credits for the original code go to the author, Howard Chu.
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by the Howard Chu for inclusion
+ * in OpenLDAP Software and subsequently enhanced by Pierangelo
+ * Masarati.
*/
#include "portable.h"
#include <ac/socket.h>
#include <ac/string.h>
-
#define AVL_INTERNAL
#include "slap.h"
#include "back-ldap.h"
+#include <lutil_ldap.h>
+
#define PRINT_CONNTREE 0
+static LDAP_REBIND_PROC ldap_back_rebind;
+
+#ifdef LDAP_BACK_PROXY_AUTHZ
+static int
+ldap_back_proxy_authz_bind( struct ldapconn *lc, Operation *op, SlapReply *rs );
+#endif /* LDAP_BACK_PROXY_AUTHZ */
+
int
-ldap_back_bind(
- Backend *be,
- Connection *conn,
- Operation *op,
- struct berval *dn,
- struct berval *ndn,
- int method,
- struct berval *cred,
- struct berval *edn
-)
+ldap_back_bind( Operation *op, SlapReply *rs )
{
- struct ldapinfo *li = (struct ldapinfo *) be->be_private;
+ struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
struct ldapconn *lc;
- struct berval mdn = { 0, NULL };
int rc = 0;
+ ber_int_t msgid;
- lc = ldap_back_getconn(li, conn, op);
+ lc = ldap_back_getconn( op, rs );
if ( !lc ) {
return( -1 );
}
- /*
- * Rewrite the bind dn if needed
- */
-#ifdef ENABLE_REWRITE
- switch ( rewrite_session( li->rwinfo, "bindDn", dn->bv_val, conn, &mdn.bv_val ) ) {
- case REWRITE_REGEXEC_OK:
- if ( mdn.bv_val == NULL ) {
- mdn.bv_val = ( char * )dn->bv_val;
+ if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
+ ch_free( lc->lc_bound_ndn.bv_val );
+ BER_BVZERO( &lc->lc_bound_ndn );
+ }
+ lc->lc_bound = 0;
+
+ /* method is always LDAP_AUTH_SIMPLE if we got here */
+ rs->sr_err = ldap_sasl_bind( lc->lc_ld, op->o_req_dn.bv_val,
+ LDAP_SASL_SIMPLE,
+ &op->orb_cred, op->o_ctrls, NULL, &msgid );
+ rc = ldap_back_op_result( lc, op, rs, msgid, 1 );
+
+ if ( rc == LDAP_SUCCESS ) {
+#if defined(LDAP_BACK_PROXY_AUTHZ)
+ if ( li->idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
+ ldap_back_proxy_authz_bind( lc, op, rs );
+ if ( lc->lc_bound == 0 ) {
+ rc = 1;
+ goto done;
+ }
}
-#ifdef NEW_LOGGING
- LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
- "[rw] bindDn: \"%s\" -> \"%s\"\n", dn->bv_val, mdn.bv_val ));
-#else /* !NEW_LOGGING */
- Debug( LDAP_DEBUG_ARGS, "rw> bindDn: \"%s\" -> \"%s\"\n%s",
- dn->bv_val, mdn.bv_val, "" );
-#endif /* !NEW_LOGGING */
- break;
-
- case REWRITE_REGEXEC_UNWILLING:
- send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
- NULL, "Unwilling to perform", NULL, NULL );
- return( -1 );
+#endif /* LDAP_BACK_PROXY_AUTHZ */
- case REWRITE_REGEXEC_ERR:
- send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
- NULL, "Operations error", NULL, NULL );
- return( -1 );
- }
-#else /* !ENABLE_REWRITE */
- ldap_back_dn_massage( li, dn, &mdn, 0, 1 );
-#endif /* !ENABLE_REWRITE */
+ lc->lc_bound = 1;
+ ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
- rc = ldap_bind_s(lc->ld, mdn.bv_val, cred->bv_val, method);
- if (rc != LDAP_SUCCESS) {
- rc = ldap_back_op_result( lc, op );
- } else {
- lc->bound = 1;
+ if ( li->savecred ) {
+ if ( !BER_BVISNULL( &lc->lc_cred ) ) {
+ memset( lc->lc_cred.bv_val, 0,
+ lc->lc_cred.bv_len );
+ ch_free( lc->lc_cred.bv_val );
+ }
+ ber_dupbv( &lc->lc_cred, &op->orb_cred );
+ ldap_set_rebind_proc( lc->lc_ld, ldap_back_rebind, lc );
+ }
}
+done:;
- if ( mdn.bv_val != dn->bv_val ) {
- free( mdn.bv_val );
+ /* must re-insert if local DN changed as result of bind */
+ if ( lc->lc_bound && !dn_match( &op->o_req_ndn, &lc->lc_local_ndn ) ) {
+ int lerr;
+
+ ldap_pvt_thread_mutex_lock( &li->conn_mutex );
+ lc = avl_delete( &li->conntree, (caddr_t)lc,
+ ldap_back_conn_cmp );
+ if ( !BER_BVISNULL( &lc->lc_local_ndn ) ) {
+ ch_free( lc->lc_local_ndn.bv_val );
+ }
+ ber_dupbv( &lc->lc_local_ndn, &op->o_req_ndn );
+ lerr = avl_insert( &li->conntree, (caddr_t)lc,
+ ldap_back_conn_cmp, ldap_back_conn_dup );
+ ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
+ if ( lerr == -1 ) {
+ ldap_back_conn_free( lc );
+ }
}
-
+
return( rc );
}
* used by avl stuff
*/
int
-ldap_back_conn_cmp(
- const void *c1,
- const void *c2
- )
+ldap_back_conn_cmp( const void *c1, const void *c2 )
{
- struct ldapconn *lc1 = (struct ldapconn *)c1;
- struct ldapconn *lc2 = (struct ldapconn *)c2;
-
- return ( ( lc1->conn < lc2->conn ) ? -1 : ( ( lc1->conn > lc2-> conn ) ? 1 : 0 ) );
+ const struct ldapconn *lc1 = (const struct ldapconn *)c1;
+ const struct ldapconn *lc2 = (const struct ldapconn *)c2;
+ int rc;
+
+ /* If local DNs don't match, it is definitely not a match */
+ rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
+ if ( rc ) {
+ return rc;
+ }
+
+ /* For shared sessions, conn is NULL. Only explicitly
+ * bound sessions will have non-NULL conn.
+ */
+ return SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
}
/*
* used by avl stuff
*/
int
-ldap_back_conn_dup(
- void *c1,
- void *c2
- )
+ldap_back_conn_dup( void *c1, void *c2 )
{
struct ldapconn *lc1 = (struct ldapconn *)c1;
struct ldapconn *lc2 = (struct ldapconn *)c2;
- return( ( lc1->conn == lc2->conn ) ? -1 : 0 );
+ /* Cannot have more than one shared session with same DN */
+ if ( dn_match( &lc1->lc_local_ndn, &lc2->lc_local_ndn ) &&
+ lc1->lc_conn == lc2->lc_conn )
+ {
+ return -1;
+ }
+
+ return 0;
}
#if PRINT_CONNTREE > 0
-static void ravl_print( Avlnode *root, int depth )
+static void
+ravl_print( Avlnode *root, int depth )
{
int i;
+ struct ldapconn *lc;
- if ( root == 0 )
+ if ( root == 0 ) {
return;
+ }
ravl_print( root->avl_right, depth+1 );
- for ( i = 0; i < depth; i++ )
+ for ( i = 0; i < depth; i++ ) {
printf( " " );
+ }
- printf( "c(%ld) %d\n", ((struct ldapconn *) root->avl_data)->conn->c_connid, root->avl_bf );
+ lc = root->avl_data;
+ printf( "lc(%lx) local(%s) conn(%lx) %d\n",
+ lc, lc->lc_local_ndn.bv_val, lc->lc_conn, root->avl_bf );
ravl_print( root->avl_left, depth+1 );
}
-static void myprint( Avlnode *root )
+static void
+myprint( Avlnode *root )
{
printf( "********\n" );
- if ( root == 0 )
+ if ( root == 0 ) {
printf( "\tNULL\n" );
- else
+ } else {
ravl_print( root, 0 );
+ }
printf( "********\n" );
}
#endif /* PRINT_CONNTREE */
+int
+ldap_back_freeconn( Operation *op, struct ldapconn *lc )
+{
+ struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
+
+ ldap_pvt_thread_mutex_lock( &li->conn_mutex );
+ lc = avl_delete( &li->conntree, (caddr_t)lc,
+ ldap_back_conn_cmp );
+ ldap_back_conn_free( (void *)lc );
+ ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
+
+ return 0;
+}
+
struct ldapconn *
-ldap_back_getconn(struct ldapinfo *li, Connection *conn, Operation *op)
+ldap_back_getconn( Operation *op, SlapReply *rs )
{
- struct ldapconn *lc, lc_curr;
- LDAP *ld;
+ struct ldapinfo *li = (struct ldapinfo *)op->o_bd->be_private;
+ struct ldapconn *lc, lc_curr;
+ LDAP *ld;
+ int is_priv = 0;
/* Searches for a ldapconn in the avl tree */
- lc_curr.conn = conn;
+
+ /* Explicit binds must not be shared */
+ if ( op->o_tag == LDAP_REQ_BIND
+ || ( op->o_conn
+ && op->o_conn->c_authz_backend
+ && op->o_bd->be_private == op->o_conn->c_authz_backend->be_private ) )
+ {
+ lc_curr.lc_conn = op->o_conn;
+
+ } else {
+ lc_curr.lc_conn = NULL;
+ }
+
+ /* Internal searches are privileged and shared. So is root. */
+ if ( op->o_do_not_cache || be_isroot( op ) ) {
+ lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
+ lc_curr.lc_conn = NULL;
+ is_priv = 1;
+
+ } else {
+ lc_curr.lc_local_ndn = op->o_ndn;
+ }
+
ldap_pvt_thread_mutex_lock( &li->conn_mutex );
lc = (struct ldapconn *)avl_find( li->conntree,
- (caddr_t)&lc_curr, ldap_back_conn_cmp );
+ (caddr_t)&lc_curr, ldap_back_conn_cmp );
ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
/* Looks like we didn't get a bind. Open a new session... */
- if (!lc) {
- int vers = conn->c_protocol;
- int err = ldap_initialize(&ld, li->url);
+ if ( !lc ) {
+ int vers = op->o_protocol;
+ rs->sr_err = ldap_initialize( &ld, li->url );
- if (err != LDAP_SUCCESS) {
- err = ldap_back_map_result(err);
- send_ldap_result( conn, op, err,
- NULL, "ldap_init failed", NULL, NULL );
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ rs->sr_err = slap_map_api2result( rs );
+ if ( rs->sr_text == NULL ) {
+ rs->sr_text = "ldap_initialize() failed";
+ }
+ if ( op->o_conn ) {
+ send_ldap_result( op, rs );
+ }
+ rs->sr_text = NULL;
return( NULL );
}
/* Set LDAP version. This will always succeed: If the client
* bound with a particular version, then so can we.
*/
- ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &vers);
+ ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION,
+ (const void *)&vers );
+ /* FIXME: configurable? */
+ ldap_set_option( ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON );
- lc = (struct ldapconn *)ch_malloc(sizeof(struct ldapconn));
- lc->conn = conn;
- lc->ld = ld;
+ lc = (struct ldapconn *)ch_malloc( sizeof( struct ldapconn ) );
+ lc->lc_conn = lc_curr.lc_conn;
+ lc->lc_ld = ld;
+ ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
-#ifdef ENABLE_REWRITE
- /*
- * Sets a cookie for the rewrite session
- */
- ( void )rewrite_session_init( li->rwinfo, conn );
-#endif /* ENABLE_REWRITE */
+ ldap_pvt_thread_mutex_init( &lc->lc_mutex );
+
+ if ( is_priv ) {
+ ber_dupbv( &lc->lc_cred, &li->acl_passwd );
+ ber_dupbv( &lc->lc_bound_ndn, &li->acl_authcDN );
- if ( lc->conn->c_cdn != NULL && lc->conn->c_cdn[0] != '\0' ) {
-
- /*
- * Rewrite the bind dn if needed
- */
-#ifdef ENABLE_REWRITE
- lc->bound_dn.bv_val = NULL;
- lc->bound_dn.bv_len = 0;
- switch ( rewrite_session( li->rwinfo, "bindDn",
- lc->conn->c_cdn, conn,
- &lc->bound_dn.bv_val ) ) {
- case REWRITE_REGEXEC_OK:
- if ( lc->bound_dn.bv_val == NULL ) {
- lc->bound_dn.bv_val =
- ch_strdup( lc->conn->c_cdn );
- }
-#ifdef NEW_LOGGING
- LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
- "[rw] bindDn: \"%s\" ->"
- " \"%s\"\n%s",
- lc->conn->c_cdn,
- lc->bound_dn.bv_val ));
-#else /* !NEW_LOGGING */
- Debug( LDAP_DEBUG_ARGS,
- "rw> bindDn: \"%s\" ->"
- " \"%s\"\n%s",
- lc->conn->c_cdn,
- lc->bound_dn.bv_val, "" );
-#endif /* !NEW_LOGGING */
- break;
-
- case REWRITE_REGEXEC_UNWILLING:
- send_ldap_result( conn, op,
- LDAP_UNWILLING_TO_PERFORM,
- NULL, "Unwilling to perform",
- NULL, NULL );
- return( NULL );
-
- case REWRITE_REGEXEC_ERR:
- send_ldap_result( conn, op,
- LDAP_OPERATIONS_ERROR,
- NULL, "Operations error",
- NULL, NULL );
- return( NULL );
- }
-#else /* !ENABLE_REWRITE */
- struct berval bv;
- ber_str2bv( lc->conn->c_cdn, 0, 0, &bv );
- ldap_back_dn_massage( li, &bv, &lc->bound_dn, 0, 1 );
-#endif /* !ENABLE_REWRITE */
} else {
- lc->bound_dn.bv_val = NULL;
- lc->bound_dn.bv_len = 0;
+ BER_BVZERO( &lc->lc_cred );
+ BER_BVZERO( &lc->lc_bound_ndn );
+ if ( op->o_conn && !BER_BVISEMPTY( &op->o_ndn )
+ && op->o_bd == op->o_conn->c_authz_backend )
+ {
+ ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
+ }
}
- lc->bound = 0;
+
+ lc->lc_bound = 0;
/* Inserts the newly created ldapconn in the avl tree */
ldap_pvt_thread_mutex_lock( &li->conn_mutex );
- err = avl_insert( &li->conntree, (caddr_t)lc,
+ rs->sr_err = avl_insert( &li->conntree, (caddr_t)lc,
ldap_back_conn_cmp, ldap_back_conn_dup );
#if PRINT_CONNTREE > 0
myprint( li->conntree );
#endif /* PRINT_CONNTREE */
-
+
ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
-#ifdef NEW_LOGGING
- LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
- "ldap_back_getconn: conn %ld inserted\n",
- lc->conn->c_connid ));
-#else /* !NEW_LOGGING */
Debug( LDAP_DEBUG_TRACE,
- "=>ldap_back_getconn: conn %ld inserted\n%s%s",
- lc->conn->c_connid, "", "" );
-#endif /* !NEW_LOGGING */
-
+ "=>ldap_back_getconn: conn %p inserted\n", (void *) lc, 0, 0 );
+
/* Err could be -1 in case a duplicate ldapconn is inserted */
- if ( err != 0 ) {
- send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
- NULL, "internal server error", NULL, NULL );
- /* better destroy the ldapconn struct? */
+ if ( rs->sr_err != 0 ) {
+ ldap_back_conn_free( lc );
+ if ( op->o_conn ) {
+ send_ldap_error( op, rs, LDAP_OTHER,
+ "internal server error" );
+ }
return( NULL );
}
} else {
-#ifdef NEW_LOGGING
- LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
- "ldap_back_getconn: conn %ld inserted\n",
- lc->conn->c_connid ));
-#else /* !NEW_LOGGING */
Debug( LDAP_DEBUG_TRACE,
- "=>ldap_back_getconn: conn %ld fetched%s%s\n",
- lc->conn->c_connid, "", "" );
-#endif /* !NEW_LOGGING */
+ "=>ldap_back_getconn: conn %p fetched\n", (void *) lc, 0, 0 );
}
return( lc );
/*
* ldap_back_dobind
*
- * Note: as the check for the value of lc->bound was already here, I removed
+ * Note: as the check for the value of lc->lc_bound was already here, I removed
* it from all the callers, and I made the function return the flag, so
* it can be used to simplify the check.
*/
int
-ldap_back_dobind(struct ldapconn *lc, Operation *op)
-{
- if (lc->bound) {
- return( lc->bound );
+ldap_back_dobind( struct ldapconn *lc, Operation *op, SlapReply *rs )
+{
+ int rc;
+ ber_int_t msgid;
+
+ ldap_pvt_thread_mutex_lock( &lc->lc_mutex );
+ if ( !lc->lc_bound ) {
+#ifdef LDAP_BACK_PROXY_AUTHZ
+ /*
+ * FIXME: we need to let clients use proxyAuthz
+ * otherwise we cannot do symmetric pools of servers;
+ * we have to live with the fact that a user can
+ * authorize itself as any ID that is allowed
+ * by the authzTo directive of the "proxyauthzdn".
+ */
+ /*
+ * NOTE: current Proxy Authorization specification
+ * and implementation do not allow proxy authorization
+ * control to be provided with Bind requests
+ */
+ /*
+ * if no bind took place yet, but the connection is bound
+ * and the "proxyauthzdn" is set, then bind as
+ * "proxyauthzdn" and explicitly add the proxyAuthz
+ * control to every operation with the dn bound
+ * to the connection as control value.
+ */
+ if ( op->o_conn != NULL && BER_BVISNULL( &lc->lc_bound_ndn ) ) {
+ (void)ldap_back_proxy_authz_bind( lc, op, rs );
+ goto done;
+ }
+#endif /* LDAP_BACK_PROXY_AUTHZ */
+
+ rs->sr_err = ldap_sasl_bind( lc->lc_ld,
+ lc->lc_bound_ndn.bv_val,
+ LDAP_SASL_SIMPLE, &lc->lc_cred,
+ NULL, NULL, &msgid );
+
+ rc = ldap_back_op_result( lc, op, rs, msgid, 0 );
+ if ( rc == LDAP_SUCCESS ) {
+ lc->lc_bound = 1;
+ }
}
- if (ldap_bind_s(lc->ld, lc->bound_dn.bv_val, NULL, LDAP_AUTH_SIMPLE) !=
- LDAP_SUCCESS) {
- ldap_back_op_result(lc, op);
- return( 0 );
- } /* else */
- return( lc->bound = 1 );
+done:;
+ rc = lc->lc_bound;
+ ldap_pvt_thread_mutex_unlock( &lc->lc_mutex );
+ return rc;
}
-/* Map API errors to protocol errors... */
+/*
+ * ldap_back_rebind
+ *
+ * This is a callback used for chasing referrals using the same
+ * credentials as the original user on this session.
+ */
+static int
+ldap_back_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
+ ber_int_t msgid, void *params )
+{
+ struct ldapconn *lc = params;
+
+ return ldap_sasl_bind_s( ld, lc->lc_bound_ndn.bv_val,
+ LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
+}
int
-ldap_back_map_result(int err)
+ldap_back_op_result(
+ struct ldapconn *lc,
+ Operation *op,
+ SlapReply *rs,
+ ber_int_t msgid,
+ int sendok )
{
- switch(err)
- {
- case LDAP_SERVER_DOWN:
- return LDAP_UNAVAILABLE;
- case LDAP_LOCAL_ERROR:
- return LDAP_OPERATIONS_ERROR;
- case LDAP_ENCODING_ERROR:
- case LDAP_DECODING_ERROR:
- return LDAP_PROTOCOL_ERROR;
- case LDAP_TIMEOUT:
- return LDAP_UNAVAILABLE;
- case LDAP_AUTH_UNKNOWN:
- return LDAP_AUTH_METHOD_NOT_SUPPORTED;
- case LDAP_FILTER_ERROR:
- return LDAP_OPERATIONS_ERROR;
- case LDAP_USER_CANCELLED:
- return LDAP_OPERATIONS_ERROR;
- case LDAP_PARAM_ERROR:
- return LDAP_PROTOCOL_ERROR;
- case LDAP_NO_MEMORY:
- return LDAP_OPERATIONS_ERROR;
- case LDAP_CONNECT_ERROR:
- return LDAP_UNAVAILABLE;
- case LDAP_NOT_SUPPORTED:
- return LDAP_UNWILLING_TO_PERFORM;
- case LDAP_CONTROL_NOT_FOUND:
- return LDAP_PROTOCOL_ERROR;
- case LDAP_NO_RESULTS_RETURNED:
- return LDAP_NO_SUCH_OBJECT;
- case LDAP_MORE_RESULTS_TO_RETURN:
- return LDAP_OTHER;
- case LDAP_CLIENT_LOOP:
- case LDAP_REFERRAL_LIMIT_EXCEEDED:
- return LDAP_LOOP_DETECT;
- default:
- if LDAP_API_ERROR(err)
- return LDAP_OTHER;
- else
- return err;
+ char *match = NULL;
+ LDAPMessage *res = NULL;
+ char *text = NULL;
+
+#define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
+
+ rs->sr_text = NULL;
+ rs->sr_matched = NULL;
+
+ /* if the error recorded in the reply corresponds
+ * to a successful state, get the error from the
+ * remote server response */
+ if ( ERR_OK( rs->sr_err ) ) {
+ /* if result parsing fails, note the failure reason */
+ if ( ldap_result( lc->lc_ld, msgid, 1, NULL, &res ) == -1 ) {
+ ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
+ &rs->sr_err );
+
+ /* otherwise get the result; if it is not
+ * LDAP_SUCCESS, record it in the reply
+ * structure (this includes
+ * LDAP_COMPARE_{TRUE|FALSE}) */
+ } else {
+ int rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
+ &match, &text, NULL, NULL, 1 );
+ rs->sr_text = text;
+ if ( rc != LDAP_SUCCESS ) {
+ rs->sr_err = rc;
+ }
+ }
}
+
+ /* if the error in the reply structure is not
+ * LDAP_SUCCESS, try to map it from client
+ * to server error */
+ if ( !ERR_OK( rs->sr_err ) ) {
+ rs->sr_err = slap_map_api2result( rs );
+
+ /* internal ops ( op->o_conn == NULL )
+ * must not reply to client */
+ if ( op->o_conn && !op->o_do_not_cache && match ) {
+
+ /* record the (massaged) matched
+ * DN into the reply structure */
+ rs->sr_matched = match;
+ }
+ }
+ if ( op->o_conn && ( sendok || rs->sr_err != LDAP_SUCCESS ) ) {
+ send_ldap_result( op, rs );
+ }
+ if ( match ) {
+ if ( rs->sr_matched != match ) {
+ free( (char *)rs->sr_matched );
+ }
+ rs->sr_matched = NULL;
+ ldap_memfree( match );
+ }
+ if ( text ) {
+ ldap_memfree( text );
+ }
+ rs->sr_text = NULL;
+ return( ERR_OK( rs->sr_err ) ? 0 : -1 );
}
+/* return true if bound, false if failed */
int
-ldap_back_op_result(struct ldapconn *lc, Operation *op)
+ldap_back_retry( struct ldapconn *lc, Operation *op, SlapReply *rs )
{
- int err = LDAP_SUCCESS;
- char *msg = NULL;
- char *match = NULL;
+ struct ldapinfo *li = (struct ldapinfo *)op->o_bd->be_private;
+ int vers = op->o_protocol;
+ LDAP *ld;
+
+ ldap_pvt_thread_mutex_lock( &lc->lc_mutex );
+ ldap_unbind_ext_s( lc->lc_ld, NULL, NULL );
+ lc->lc_bound = 0;
+ rs->sr_err = ldap_initialize( &ld, li->url );
+
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ rs->sr_err = slap_map_api2result( rs );
+ if ( rs->sr_text == NULL ) {
+ rs->sr_text = "ldap_initialize() failed";
+ }
+ if ( op->o_conn ) {
+ send_ldap_result( op, rs );
+ }
+ rs->sr_text = NULL;
+ return 0;
+ }
+ /* Set LDAP version. This will always succeed: If the client
+ * bound with a particular version, then so can we.
+ */
+ ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&vers );
+ /* FIXME: configurable? */
+ ldap_set_option( ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON );
+ lc->lc_ld = ld;
+ ldap_pvt_thread_mutex_unlock( &lc->lc_mutex );
+ return ldap_back_dobind( lc, op, rs );
+}
- ldap_get_option(lc->ld, LDAP_OPT_ERROR_NUMBER, &err);
- ldap_get_option(lc->ld, LDAP_OPT_ERROR_STRING, &msg);
- ldap_get_option(lc->ld, LDAP_OPT_MATCHED_DN, &match);
- err = ldap_back_map_result(err);
+#ifdef LDAP_BACK_PROXY_AUTHZ
+static int
+ldap_back_proxy_authz_bind( struct ldapconn *lc, Operation *op, SlapReply *rs )
+{
+ struct ldapinfo *li = (struct ldapinfo *)op->o_bd->be_private;
+ struct berval binddn = slap_empty_bv;
+ struct berval bindcred = slap_empty_bv;
+ int dobind = 0;
+ int msgid;
+ int rc;
-#ifdef ENABLE_REWRITE
-
/*
- * need rewrite info; mmmh ...
+ * FIXME: we need to let clients use proxyAuthz
+ * otherwise we cannot do symmetric pools of servers;
+ * we have to live with the fact that a user can
+ * authorize itself as any ID that is allowed
+ * by the authzTo directive of the "proxyauthzdn".
+ */
+ /*
+ * NOTE: current Proxy Authorization specification
+ * and implementation do not allow proxy authorization
+ * control to be provided with Bind requests
+ */
+ /*
+ * if no bind took place yet, but the connection is bound
+ * and the "proxyauthzdn" is set, then bind as
+ * "proxyauthzdn" and explicitly add the proxyAuthz
+ * control to every operation with the dn bound
+ * to the connection as control value.
*/
-#else /* !ENABLE_REWRITE */
+ /* bind as proxyauthzdn only if no idassert mode
+ * is requested, or if the client's identity
+ * is authorized */
+ switch ( li->idassert_mode ) {
+ case LDAP_BACK_IDASSERT_LEGACY:
+ if ( !BER_BVISNULL( &op->o_conn->c_ndn ) && !BER_BVISEMPTY( &op->o_conn->c_ndn ) ) {
+ if ( !BER_BVISNULL( &li->idassert_authcDN ) && !BER_BVISEMPTY( &li->idassert_authcDN ) )
+ {
+ binddn = li->idassert_authcDN;
+ bindcred = li->idassert_passwd;
+ dobind = 1;
+ }
+ }
+ break;
- send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
- /* better test the pointers before freeing? */
- if ( match ) {
- free( match );
+ default:
+ if ( li->idassert_authz ) {
+ struct berval authcDN = BER_BVISNULL( &op->o_conn->c_ndn ) ? slap_empty_bv : op->o_conn->c_ndn;
+
+ rs->sr_err = slap_sasl_matches( op, li->idassert_authz,
+ &authcDN, &authcDN );
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ send_ldap_result( op, rs );
+ lc->lc_bound = 0;
+ goto done;
+ }
+ }
+
+ binddn = li->idassert_authcDN;
+ bindcred = li->idassert_passwd;
+ dobind = 1;
+ break;
}
-#endif /* !ENABLE_REWRITE */
- if ( msg ) free( msg );
- return( (err==LDAP_SUCCESS) ? 0 : -1 );
+ if ( dobind && li->idassert_authmethod == LDAP_AUTH_SASL ) {
+#ifdef HAVE_CYRUS_SASL
+ void *defaults = NULL;
+ struct berval authzID = BER_BVNULL;
+ int freeauthz = 0;
+
+ /* if SASL supports native authz, prepare for it */
+ if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
+ ( li->idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
+ {
+ switch ( li->idassert_mode ) {
+ case LDAP_BACK_IDASSERT_OTHERID:
+ case LDAP_BACK_IDASSERT_OTHERDN:
+ authzID = li->idassert_authzID;
+ break;
+
+ case LDAP_BACK_IDASSERT_ANONYMOUS:
+ BER_BVSTR( &authzID, "dn:" );
+ break;
+
+ case LDAP_BACK_IDASSERT_SELF:
+ if ( BER_BVISNULL( &op->o_conn->c_ndn ) ) {
+ /* connection is not authc'd, so don't idassert */
+ BER_BVSTR( &authzID, "dn:" );
+ break;
+ }
+ authzID.bv_len = STRLENOF( "dn:" ) + op->o_conn->c_ndn.bv_len;
+ authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
+ AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
+ AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
+ op->o_conn->c_ndn.bv_val, op->o_conn->c_ndn.bv_len + 1 );
+ freeauthz = 1;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+#if 0 /* will deal with this later... */
+ if ( sasl_secprops != NULL ) {
+ rs->sr_err = ldap_set_option( lc->lc_ld, LDAP_OPT_X_SASL_SECPROPS,
+ (void *) sasl_secprops );
+
+ if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
+ send_ldap_result( op, rs );
+ lc->lc_bound = 0;
+ goto done;
+ }
+ }
+#endif
+
+ defaults = lutil_sasl_defaults( lc->lc_ld,
+ li->idassert_sasl_mech.bv_val,
+ li->idassert_sasl_realm.bv_val,
+ li->idassert_authcID.bv_val,
+ li->idassert_passwd.bv_val,
+ authzID.bv_val );
+
+ rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn.bv_val,
+ li->idassert_sasl_mech.bv_val, NULL, NULL,
+ li->idassert_sasl_flags, lutil_sasl_interact,
+ defaults );
+
+ lutil_sasl_freedefs( defaults );
+ if ( freeauthz ) {
+ slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
+ }
+
+ rs->sr_err = slap_map_api2result( rs );
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ lc->lc_bound = 0;
+ send_ldap_result( op, rs );
+
+ } else {
+ lc->lc_bound = 1;
+ }
+ goto done;
+#endif /* HAVE_CYRUS_SASL */
+ }
+
+ switch ( li->idassert_authmethod ) {
+ case LDAP_AUTH_SIMPLE:
+ rs->sr_err = ldap_sasl_bind( lc->lc_ld,
+ binddn.bv_val, LDAP_SASL_SIMPLE,
+ &bindcred, NULL, NULL, &msgid );
+ break;
+
+ case LDAP_AUTH_NONE:
+ lc->lc_bound = 1;
+ goto done;
+
+ default:
+ /* unsupported! */
+ lc->lc_bound = 0;
+ rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
+ send_ldap_result( op, rs );
+ goto done;
+ }
+
+ rc = ldap_back_op_result( lc, op, rs, msgid, 0 );
+ if ( rc == LDAP_SUCCESS ) {
+ lc->lc_bound = 1;
+ }
+done:;
+ return lc->lc_bound;
}
+/*
+ * ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
+ * to existing server-side controls if required; if not,
+ * the existing server-side controls are placed in *pctrls.
+ * The caller, after using the controls in client API
+ * operations, if ( *pctrls != op->o_ctrls ), should
+ * free( (*pctrls)[ 0 ] ) and free( *pctrls ).
+ * The function returns success if the control could
+ * be added if required, or if it did nothing; in the future,
+ * it might return some error if it failed.
+ *
+ * if no bind took place yet, but the connection is bound
+ * and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
+ * and explicitly add proxyAuthz the control to every operation
+ * with the dn bound to the connection as control value.
+ *
+ * If no server-side controls are defined for the operation,
+ * simply add the proxyAuthz control; otherwise, if the
+ * proxyAuthz control is not already set, add it as
+ * the first one (FIXME: is controls order significant
+ * for security?).
+ */
+int
+ldap_back_proxy_authz_ctrl(
+ struct ldapconn *lc,
+ Operation *op,
+ SlapReply *rs,
+ LDAPControl ***pctrls )
+{
+ struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
+ LDAPControl **ctrls = NULL;
+ int i = 0,
+ mode;
+ struct berval assertedID;
+
+ *pctrls = NULL;
+
+ if ( ( BER_BVISNULL( &li->idassert_authcID ) || BER_BVISEMPTY( &li->idassert_authcID ) )
+ && ( BER_BVISNULL( &li->idassert_authcDN ) || BER_BVISEMPTY( &li->idassert_authcDN ) ) ) {
+ goto done;
+ }
+
+ if ( !op->o_conn ) {
+ goto done;
+ }
+
+ if ( li->idassert_mode == LDAP_BACK_IDASSERT_LEGACY ) {
+ if ( op->o_proxy_authz ) {
+ /*
+ * FIXME: we do not want to perform proxyAuthz
+ * on behalf of the client, because this would
+ * be performed with "proxyauthzdn" privileges.
+ *
+ * This might actually be too strict, since
+ * the "proxyauthzdn" authzTo, and each entry's
+ * authzFrom attributes may be crafted
+ * to avoid unwanted proxyAuthz to take place.
+ */
+#if 0
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ rs->sr_text = "proxyAuthz not allowed within namingContext";
+#endif
+ goto done;
+ }
+
+ if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
+ goto done;
+ }
+
+ if ( BER_BVISNULL( &op->o_conn->c_ndn ) ) {
+ goto done;
+ }
+
+ if ( BER_BVISNULL( &li->idassert_authcDN ) ) {
+ goto done;
+ }
+
+ } else if ( li->idassert_authmethod == LDAP_AUTH_SASL ) {
+ if ( ( li->idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ )
+ /* && ( !BER_BVISNULL( &op->o_conn->c_ndn ) || lc->lc_bound ) */ )
+ {
+ /* already asserted in SASL via native authz */
+ /* NOTE: the test on lc->lc_bound is used to trap
+ * native authorization of anonymous users,
+ * since in that case op->o_conn->c_ndn is NULL */
+ goto done;
+ }
+
+ } else if ( li->idassert_authz ) {
+ int rc;
+ struct berval authcDN = BER_BVISNULL( &op->o_conn->c_ndn ) ? slap_empty_bv : op->o_conn->c_ndn;
+
+
+ rc = slap_sasl_matches( op, li->idassert_authz,
+ &authcDN, & authcDN );
+ if ( rc != LDAP_SUCCESS ) {
+ /* op->o_conn->c_ndn is not authorized
+ * to use idassert */
+ return rc;
+ }
+ }
+
+ if ( op->o_proxy_authz ) {
+ /*
+ * FIXME: we can:
+ * 1) ignore the already set proxyAuthz control
+ * 2) leave it in place, and don't set ours
+ * 3) add both
+ * 4) reject the operation
+ *
+ * option (4) is very drastic
+ * option (3) will make the remote server reject
+ * the operation, thus being equivalent to (4)
+ * option (2) will likely break the idassert
+ * assumptions, so we cannot accept it;
+ * option (1) means that we are contradicting
+ * the client's reques.
+ *
+ * I think (4) is the only correct choice.
+ */
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ rs->sr_text = "proxyAuthz not allowed within namingContext";
+ }
+
+ if ( op->o_do_not_cache && op->o_is_auth_check ) {
+ mode = LDAP_BACK_IDASSERT_NOASSERT;
+
+ } else {
+ mode = li->idassert_mode;
+ }
+
+ switch ( mode ) {
+ case LDAP_BACK_IDASSERT_LEGACY:
+ case LDAP_BACK_IDASSERT_SELF:
+ /* original behavior:
+ * assert the client's identity */
+ assertedID = BER_BVISNULL( &op->o_conn->c_ndn ) ? slap_empty_bv : op->o_conn->c_ndn;
+ break;
+
+ case LDAP_BACK_IDASSERT_ANONYMOUS:
+ /* assert "anonymous" */
+ assertedID = slap_empty_bv;
+ break;
+
+ case LDAP_BACK_IDASSERT_NOASSERT:
+ /* don't assert; bind as proxyauthzdn */
+ goto done;
+
+ case LDAP_BACK_IDASSERT_OTHERID:
+ case LDAP_BACK_IDASSERT_OTHERDN:
+ /* assert idassert DN */
+ assertedID = li->idassert_authzID;
+ break;
+
+ default:
+ assert( 0 );
+ }
+
+ if ( BER_BVISNULL( &assertedID ) ) {
+ assertedID = slap_empty_bv;
+ }
+
+ if ( op->o_ctrls ) {
+ for ( i = 0; op->o_ctrls[ i ]; i++ )
+ /* just count ctrls */ ;
+ }
+
+ ctrls = ch_malloc( sizeof( LDAPControl * ) * (i + 2) );
+ ctrls[ 0 ] = ch_malloc( sizeof( LDAPControl ) );
+
+ ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
+ ctrls[ 0 ]->ldctl_iscritical = 1;
+
+ switch ( li->idassert_mode ) {
+ /* already in u:ID or dn:DN form */
+ case LDAP_BACK_IDASSERT_OTHERID:
+ case LDAP_BACK_IDASSERT_OTHERDN:
+ ber_dupbv( &ctrls[ 0 ]->ldctl_value, &assertedID );
+ break;
+
+ /* needs the dn: prefix */
+ default:
+ ctrls[ 0 ]->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
+ ctrls[ 0 ]->ldctl_value.bv_val = ch_malloc( ctrls[ 0 ]->ldctl_value.bv_len + 1 );
+ AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
+ AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val + STRLENOF( "dn:" ),
+ assertedID.bv_val, assertedID.bv_len + 1 );
+ break;
+ }
+
+ if ( op->o_ctrls ) {
+ for ( i = 0; op->o_ctrls[ i ]; i++ ) {
+ ctrls[ i + 1 ] = op->o_ctrls[ i ];
+ }
+ }
+ ctrls[ i + 1 ] = NULL;
+
+done:;
+ if ( ctrls == NULL ) {
+ ctrls = op->o_ctrls;
+ }
+
+ *pctrls = ctrls;
+
+ return rs->sr_err;
+}
+
+int
+ldap_back_proxy_authz_ctrl_free( Operation *op, LDAPControl ***pctrls )
+{
+ LDAPControl **ctrls = *pctrls;
+
+ if ( ctrls && ctrls != op->o_ctrls ) {
+ assert( ctrls[ 0 ] );
+
+ if ( !BER_BVISNULL( &ctrls[ 0 ]->ldctl_value ) ) {
+ free( ctrls[ 0 ]->ldctl_value.bv_val );
+ }
+
+ free( ctrls[ 0 ] );
+ free( ctrls );
+ }
+
+ *pctrls = NULL;
+
+ return 0;
+}
+#endif /* LDAP_BACK_PROXY_AUTHZ */
projects / openldap / blobdiff