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ea6f5bad65
SLAPI always assigning connection and operation IDs of zero for internal operations, such operations would cause a stale contextCSN to be returned from slap_get_commit_csn(). As a result, SLAPI internal updates would be invisible to replicas until an external update was made. Also, SLAPI internal operations never called slap_graduate_commit_csn() which leaked pending CSNs. Also included in this patch is a general cleanup of some of the SLAPI code. Note that we need to use a separate mutex on conn_nextid to avoid a deadlock where a post-operation plugin tries to acquire connections_mutex, having locked the per-connection mutex, while the listener thread tries to acquire the per-connection mutex (having locked connections_mutex). connection.c needs to be fixed to acquire mutexes in the same order.
1913 lines
45 KiB
C
1913 lines
45 KiB
C
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2004 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/* Portions Copyright (c) 1995 Regents of the University of Michigan.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and that due credit is given
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* to the University of Michigan at Ann Arbor. The name of the University
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* may not be used to endorse or promote products derived from this
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* software without specific prior written permission. This software
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* is provided ``as is'' without express or implied warranty.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <limits.h>
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#include <ac/socket.h>
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#include <ac/errno.h>
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#include <ac/string.h>
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#include <ac/time.h>
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#include <ac/unistd.h>
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#include "ldap_pvt.h"
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#include "lutil.h"
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#include "slap.h"
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#ifdef LDAP_SLAPI
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#include "slapi/slapi.h"
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#endif
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/* protected by connections_mutex */
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static ldap_pvt_thread_mutex_t connections_mutex;
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static Connection *connections = NULL;
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static ldap_pvt_thread_mutex_t conn_nextid_mutex;
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static unsigned long conn_nextid = 0;
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/* structure state (protected by connections_mutex) */
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#define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
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#define SLAP_C_UNUSED 0x01
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#define SLAP_C_USED 0x02
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/* connection state (protected by c_mutex ) */
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#define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
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#define SLAP_C_INACTIVE 0x01 /* zero threads */
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#define SLAP_C_ACTIVE 0x02 /* one or more threads */
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#define SLAP_C_BINDING 0x03 /* binding */
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#define SLAP_C_CLOSING 0x04 /* closing */
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#define SLAP_C_CLIENT 0x05 /* outbound client conn */
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const char *
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connection_state2str( int state )
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{
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switch( state ) {
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case SLAP_C_INVALID: return "!";
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case SLAP_C_INACTIVE: return "|";
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case SLAP_C_ACTIVE: return "";
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case SLAP_C_BINDING: return "B";
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case SLAP_C_CLOSING: return "C";
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case SLAP_C_CLIENT: return "L";
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}
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return "?";
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}
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static Connection* connection_get( ber_socket_t s );
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static int connection_input( Connection *c );
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static void connection_close( Connection *c );
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static int connection_op_activate( Operation *op );
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static int connection_resched( Connection *conn );
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static void connection_abandon( Connection *conn );
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static void connection_destroy( Connection *c );
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static ldap_pvt_thread_start_t connection_operation;
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/*
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* Initialize connection management infrastructure.
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*/
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int connections_init(void)
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{
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int i;
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assert( connections == NULL );
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if( connections != NULL) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONNECTION, INFO,
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"connections_init: already initialized.\n", 0, 0, 0 );
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#else
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Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
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0, 0, 0 );
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#endif
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return -1;
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}
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/* should check return of every call */
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ldap_pvt_thread_mutex_init( &connections_mutex );
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ldap_pvt_thread_mutex_init( &conn_nextid_mutex );
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connections = (Connection *) ch_calloc( dtblsize, sizeof(Connection) );
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if( connections == NULL ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONNECTION, ERR,
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"connections_init: allocation (%d * %ld) of connection "
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"array failed\n", dtblsize, (long) sizeof(Connection), 0 );
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#else
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Debug( LDAP_DEBUG_ANY,
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"connections_init: allocation (%d*%ld) of connection array failed\n",
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dtblsize, (long) sizeof(Connection), 0 );
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#endif
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return -1;
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}
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assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
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assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
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for (i=0; i<dtblsize; i++) connections[i].c_conn_idx = i;
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/*
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* per entry initialization of the Connection array initialization
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* will be done by connection_init()
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*/
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return 0;
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}
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/*
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* Destroy connection management infrastructure.
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*/
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int connections_destroy(void)
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{
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ber_socket_t i;
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/* should check return of every call */
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if( connections == NULL) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONNECTION, INFO,
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"connections_destroy: nothing to destroy.\n", 0, 0, 0 );
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#else
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Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
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0, 0, 0 );
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#endif
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return -1;
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}
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for ( i = 0; i < dtblsize; i++ ) {
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if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
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ber_sockbuf_free( connections[i].c_sb );
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ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
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ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
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ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
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#ifdef LDAP_SLAPI
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if ( slapi_plugins_used ) {
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slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION, &connections[i] );
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}
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#endif
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}
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}
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free( connections );
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connections = NULL;
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ldap_pvt_thread_mutex_destroy( &connections_mutex );
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ldap_pvt_thread_mutex_destroy( &conn_nextid_mutex );
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return 0;
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}
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/*
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* shutdown all connections
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*/
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int connections_shutdown(void)
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{
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ber_socket_t i;
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ldap_pvt_thread_mutex_lock( &connections_mutex );
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for ( i = 0; i < dtblsize; i++ ) {
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if( connections[i].c_struct_state != SLAP_C_USED ) {
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continue;
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}
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/* give persistent clients a chance to cleanup */
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if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
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ldap_pvt_thread_pool_submit( &connection_pool,
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connections[i].c_clientfunc, connections[i].c_clientarg );
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continue;
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}
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ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
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/* connections_mutex and c_mutex are locked */
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connection_closing( &connections[i] );
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connection_close( &connections[i] );
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ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
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}
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ldap_pvt_thread_mutex_unlock( &connections_mutex );
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return 0;
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}
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/*
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* Timeout idle connections.
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*/
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int connections_timeout_idle(time_t now)
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{
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int i = 0;
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int connindex;
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Connection* c;
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for( c = connection_first( &connindex );
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c != NULL;
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c = connection_next( c, &connindex ) )
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{
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/* Don't timeout a slow-running request or a persistent
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* outbound connection */
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if( c->c_n_ops_executing ||
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c->c_conn_state == SLAP_C_CLIENT ) continue;
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if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
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/* close it */
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connection_closing( c );
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connection_close( c );
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i++;
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}
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}
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connection_done( c );
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return i;
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}
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static Connection* connection_get( ber_socket_t s )
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{
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/* connections_mutex should be locked by caller */
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Connection *c;
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#ifdef NEW_LOGGING
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LDAP_LOG( CONNECTION, ENTRY, "connection_get: socket %ld\n", (long)s, 0, 0 );
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#else
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Debug( LDAP_DEBUG_ARGS,
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"connection_get(%ld)\n",
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(long) s, 0, 0 );
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#endif
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assert( connections != NULL );
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if(s == AC_SOCKET_INVALID) {
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return NULL;
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}
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#ifndef HAVE_WINSOCK
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c = &connections[s];
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assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
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#else
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c = NULL;
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{
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ber_socket_t i, sd;
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for(i=0; i<dtblsize; i++) {
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if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
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assert( connections[i].c_conn_state == SLAP_C_INVALID );
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assert( connections[i].c_sb == 0 );
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break;
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}
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ber_sockbuf_ctrl( connections[i].c_sb,
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LBER_SB_OPT_GET_FD, &sd );
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if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
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assert( connections[i].c_conn_state == SLAP_C_INVALID );
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assert( sd == AC_SOCKET_INVALID );
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continue;
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}
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/* state can actually change from used -> unused by resched,
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* so don't assert details here.
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*/
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if( sd == s ) {
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c = &connections[i];
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break;
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}
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}
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}
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#endif
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if( c != NULL ) {
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ber_socket_t sd;
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ldap_pvt_thread_mutex_lock( &c->c_mutex );
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ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
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if( c->c_struct_state != SLAP_C_USED ) {
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/* connection must have been closed due to resched */
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assert( c->c_conn_state == SLAP_C_INVALID );
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assert( sd == AC_SOCKET_INVALID );
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#ifdef NEW_LOGGING
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LDAP_LOG( CONNECTION, ARGS,
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"connection_get: connection %d not used\n", s, 0, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE,
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"connection_get(%d): connection not used\n",
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s, 0, 0 );
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#endif
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ldap_pvt_thread_mutex_unlock( &c->c_mutex );
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return NULL;
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}
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#ifdef NEW_LOGGING
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LDAP_LOG( CONNECTION, RESULTS,
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"connection_get: get for %d got connid %lu\n", s, c->c_connid, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE,
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"connection_get(%d): got connid=%lu\n",
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s, c->c_connid, 0 );
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#endif
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c->c_n_get++;
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assert( c->c_struct_state == SLAP_C_USED );
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assert( c->c_conn_state != SLAP_C_INVALID );
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assert( sd != AC_SOCKET_INVALID );
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#ifdef SLAPD_MONITOR
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c->c_activitytime = slap_get_time();
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#else
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if( global_idletimeout > 0 ) {
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c->c_activitytime = slap_get_time();
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}
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#endif
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}
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return c;
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}
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static void connection_return( Connection *c )
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{
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ldap_pvt_thread_mutex_unlock( &c->c_mutex );
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}
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long connection_init(
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ber_socket_t s,
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Listener *listener,
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const char* dnsname,
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const char* peername,
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int flags,
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slap_ssf_t ssf,
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struct berval *authid )
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{
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unsigned long id;
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Connection *c;
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assert( connections != NULL );
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assert( listener != NULL );
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assert( dnsname != NULL );
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assert( peername != NULL );
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#ifndef HAVE_TLS
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assert( flags != CONN_IS_TLS );
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#endif
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if( s == AC_SOCKET_INVALID ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONNECTION, INFO,
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"connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
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#else
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Debug( LDAP_DEBUG_ANY,
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"connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
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#endif
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return -1;
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}
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assert( s >= 0 );
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#ifndef HAVE_WINSOCK
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assert( s < dtblsize );
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#endif
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ldap_pvt_thread_mutex_lock( &connections_mutex );
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#ifndef HAVE_WINSOCK
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c = &connections[s];
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#else
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{
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ber_socket_t i;
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c = NULL;
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for( i=0; i < dtblsize; i++) {
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ber_socket_t sd;
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if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
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assert( connections[i].c_sb == 0 );
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c = &connections[i];
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break;
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}
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sd = AC_SOCKET_INVALID;
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if (connections[i].c_sb != NULL) {
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ber_sockbuf_ctrl( connections[i].c_sb,
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LBER_SB_OPT_GET_FD, &sd );
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}
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if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
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assert( sd == AC_SOCKET_INVALID );
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c = &connections[i];
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break;
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}
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if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
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continue;
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}
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assert( connections[i].c_struct_state == SLAP_C_USED );
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assert( connections[i].c_conn_state != SLAP_C_INVALID );
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assert( sd != AC_SOCKET_INVALID );
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}
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if( c == NULL ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONNECTION, INFO,
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"connection_init(%d): connection table full "
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"(%d/%d)\n", s, i, dtblsize );
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#else
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Debug( LDAP_DEBUG_ANY,
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"connection_init(%d): connection table full "
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"(%d/%d)\n", s, i, dtblsize);
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#endif
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ldap_pvt_thread_mutex_unlock( &connections_mutex );
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return -1;
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}
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}
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#endif
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assert( c != NULL );
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if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
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c->c_send_ldap_result = slap_send_ldap_result;
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c->c_send_search_entry = slap_send_search_entry;
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c->c_send_search_reference = slap_send_search_reference;
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c->c_send_ldap_extended = slap_send_ldap_extended;
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#ifdef LDAP_RES_INTERMEDIATE
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c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
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#endif
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BER_BVZERO( &c->c_authmech );
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BER_BVZERO( &c->c_dn );
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BER_BVZERO( &c->c_ndn );
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c->c_listener = NULL;
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BER_BVZERO( &c->c_peer_domain );
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BER_BVZERO( &c->c_peer_name );
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LDAP_STAILQ_INIT(&c->c_ops);
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LDAP_STAILQ_INIT(&c->c_pending_ops);
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BER_BVZERO( &c->c_sasl_bind_mech );
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c->c_sasl_done = 0;
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c->c_sasl_authctx = NULL;
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c->c_sasl_sockctx = NULL;
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c->c_sasl_extra = NULL;
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c->c_sasl_bindop = NULL;
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c->c_sb = ber_sockbuf_alloc( );
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{
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ber_len_t max = sockbuf_max_incoming;
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ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
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}
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c->c_currentber = NULL;
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/* should check status of thread calls */
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ldap_pvt_thread_mutex_init( &c->c_mutex );
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ldap_pvt_thread_mutex_init( &c->c_write_mutex );
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ldap_pvt_thread_cond_init( &c->c_write_cv );
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#ifdef LDAP_SLAPI
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if ( slapi_plugins_used ) {
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slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
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}
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#endif
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c->c_struct_state = SLAP_C_UNUSED;
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}
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ldap_pvt_thread_mutex_lock( &c->c_mutex );
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assert( c->c_struct_state == SLAP_C_UNUSED );
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assert( BER_BVISNULL( &c->c_authmech ) );
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assert( BER_BVISNULL( &c->c_dn ) );
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assert( BER_BVISNULL( &c->c_ndn ) );
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assert( c->c_listener == NULL );
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assert( BER_BVISNULL( &c->c_peer_domain ) );
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assert( BER_BVISNULL( &c->c_peer_name ) );
|
|
assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
|
|
assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
|
|
assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
|
|
assert( c->c_sasl_done == 0 );
|
|
assert( c->c_sasl_authctx == NULL );
|
|
assert( c->c_sasl_sockctx == NULL );
|
|
assert( c->c_sasl_extra == NULL );
|
|
assert( c->c_sasl_bindop == NULL );
|
|
assert( c->c_currentber == NULL );
|
|
assert( c->c_writewaiter == 0);
|
|
|
|
c->c_listener = listener;
|
|
|
|
if ( flags == CONN_IS_CLIENT ) {
|
|
c->c_conn_state = SLAP_C_CLIENT;
|
|
c->c_struct_state = SLAP_C_USED;
|
|
ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &s );
|
|
ldap_pvt_thread_mutex_unlock( &c->c_mutex );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
|
|
return 0;
|
|
}
|
|
|
|
ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
|
|
ber_str2bv( peername, 0, 1, &c->c_peer_name );
|
|
|
|
c->c_n_ops_received = 0;
|
|
c->c_n_ops_executing = 0;
|
|
c->c_n_ops_pending = 0;
|
|
c->c_n_ops_completed = 0;
|
|
|
|
c->c_n_get = 0;
|
|
c->c_n_read = 0;
|
|
c->c_n_write = 0;
|
|
|
|
/* set to zero until bind, implies LDAP_VERSION3 */
|
|
c->c_protocol = 0;
|
|
|
|
#ifdef SLAPD_MONITOR
|
|
c->c_activitytime = c->c_starttime = slap_get_time();
|
|
#else
|
|
if( global_idletimeout > 0 ) {
|
|
c->c_activitytime = c->c_starttime = slap_get_time();
|
|
}
|
|
#endif
|
|
|
|
#ifdef LDAP_CONNECTIONLESS
|
|
c->c_is_udp = 0;
|
|
if( flags == CONN_IS_UDP ) {
|
|
c->c_is_udp = 1;
|
|
#ifdef LDAP_DEBUG
|
|
ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
|
|
LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
|
|
#endif
|
|
ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
|
|
LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
|
|
ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
|
|
LBER_SBIOD_LEVEL_PROVIDER, NULL );
|
|
} else
|
|
#endif
|
|
{
|
|
#ifdef LDAP_DEBUG
|
|
ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
|
|
LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
|
|
#endif
|
|
ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
|
|
LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
|
|
}
|
|
|
|
#ifdef LDAP_DEBUG
|
|
ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
|
|
INT_MAX, (void*)"ldap_" );
|
|
#endif
|
|
|
|
if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
|
|
c /* non-NULL */ ) < 0 )
|
|
{
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, INFO,
|
|
"connection_init: conn %lu set nonblocking failed\n",
|
|
c->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"connection_init(%d, %s): set nonblocking failed\n",
|
|
s, c->c_peer_name.bv_val, 0 );
|
|
#endif
|
|
}
|
|
|
|
ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
|
|
id = c->c_connid = conn_nextid++;
|
|
ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
|
|
|
|
c->c_conn_state = SLAP_C_INACTIVE;
|
|
c->c_struct_state = SLAP_C_USED;
|
|
|
|
c->c_ssf = c->c_transport_ssf = ssf;
|
|
c->c_tls_ssf = 0;
|
|
|
|
#ifdef HAVE_TLS
|
|
if ( flags == CONN_IS_TLS ) {
|
|
c->c_is_tls = 1;
|
|
c->c_needs_tls_accept = 1;
|
|
} else {
|
|
c->c_is_tls = 0;
|
|
c->c_needs_tls_accept = 0;
|
|
}
|
|
#endif
|
|
|
|
slap_sasl_open( c, 0 );
|
|
slap_sasl_external( c, ssf, authid );
|
|
|
|
ldap_pvt_thread_mutex_unlock( &c->c_mutex );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
|
|
backend_connection_init(c);
|
|
|
|
return id;
|
|
}
|
|
|
|
void connection2anonymous( Connection *c )
|
|
{
|
|
assert( connections != NULL );
|
|
assert( c != NULL );
|
|
|
|
{
|
|
ber_len_t max = sockbuf_max_incoming;
|
|
ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
|
|
}
|
|
|
|
if(c->c_authmech.bv_val != NULL ) {
|
|
free(c->c_authmech.bv_val);
|
|
}
|
|
BER_BVZERO( &c->c_authmech );
|
|
|
|
if(c->c_dn.bv_val != NULL) {
|
|
free(c->c_dn.bv_val);
|
|
}
|
|
BER_BVZERO( &c->c_dn );
|
|
if(c->c_ndn.bv_val != NULL) {
|
|
free(c->c_ndn.bv_val);
|
|
}
|
|
BER_BVZERO( &c->c_ndn );
|
|
|
|
c->c_authz_backend = NULL;
|
|
}
|
|
|
|
static void
|
|
connection_destroy( Connection *c )
|
|
{
|
|
/* note: connections_mutex should be locked by caller */
|
|
ber_socket_t sd;
|
|
unsigned long connid;
|
|
|
|
assert( connections != NULL );
|
|
assert( c != NULL );
|
|
assert( c->c_struct_state != SLAP_C_UNUSED );
|
|
assert( c->c_conn_state != SLAP_C_INVALID );
|
|
assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
|
|
assert( c->c_writewaiter == 0);
|
|
|
|
/* only for stats (print -1 as "%lu" may give unexpected results ;) */
|
|
connid = c->c_connid;
|
|
|
|
backend_connection_destroy(c);
|
|
|
|
c->c_protocol = 0;
|
|
c->c_connid = -1;
|
|
|
|
c->c_activitytime = c->c_starttime = 0;
|
|
|
|
connection2anonymous( c );
|
|
c->c_listener = NULL;
|
|
|
|
if(c->c_peer_domain.bv_val != NULL) {
|
|
free(c->c_peer_domain.bv_val);
|
|
}
|
|
BER_BVZERO( &c->c_peer_domain );
|
|
if(c->c_peer_name.bv_val != NULL) {
|
|
free(c->c_peer_name.bv_val);
|
|
}
|
|
BER_BVZERO( &c->c_peer_name );
|
|
|
|
c->c_sasl_bind_in_progress = 0;
|
|
if(c->c_sasl_bind_mech.bv_val != NULL) {
|
|
free(c->c_sasl_bind_mech.bv_val);
|
|
}
|
|
BER_BVZERO( &c->c_sasl_bind_mech );
|
|
|
|
slap_sasl_close( c );
|
|
|
|
if ( c->c_currentber != NULL ) {
|
|
ber_free( c->c_currentber, 1 );
|
|
c->c_currentber = NULL;
|
|
}
|
|
|
|
ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
|
|
if ( sd != AC_SOCKET_INVALID ) {
|
|
slapd_remove( sd, 1, 0 );
|
|
|
|
Statslog( LDAP_DEBUG_STATS,
|
|
"conn=%lu fd=%ld closed\n",
|
|
connid, (long) sd, 0, 0, 0 );
|
|
}
|
|
|
|
ber_sockbuf_free( c->c_sb );
|
|
|
|
c->c_sb = ber_sockbuf_alloc( );
|
|
|
|
{
|
|
ber_len_t max = sockbuf_max_incoming;
|
|
ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
|
|
}
|
|
|
|
c->c_conn_state = SLAP_C_INVALID;
|
|
c->c_struct_state = SLAP_C_UNUSED;
|
|
|
|
#ifdef LDAP_SLAPI
|
|
/* call destructors, then constructors; avoids unnecessary allocation */
|
|
if ( slapi_plugins_used ) {
|
|
slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
|
|
}
|
|
#endif
|
|
}
|
|
|
|
int connection_state_closing( Connection *c )
|
|
{
|
|
/* c_mutex must be locked by caller */
|
|
|
|
int state;
|
|
assert( c != NULL );
|
|
assert( c->c_struct_state == SLAP_C_USED );
|
|
|
|
state = c->c_conn_state;
|
|
|
|
assert( state != SLAP_C_INVALID );
|
|
|
|
return state == SLAP_C_CLOSING;
|
|
}
|
|
|
|
static void connection_abandon( Connection *c )
|
|
{
|
|
/* c_mutex must be locked by caller */
|
|
|
|
Operation *o;
|
|
|
|
LDAP_STAILQ_FOREACH(o, &c->c_ops, o_next) {
|
|
o->o_abandon = 1;
|
|
}
|
|
|
|
/* remove pending operations */
|
|
while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
|
|
LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
|
|
LDAP_STAILQ_NEXT(o, o_next) = NULL;
|
|
slap_op_free( o );
|
|
}
|
|
}
|
|
|
|
void connection_closing( Connection *c )
|
|
{
|
|
assert( connections != NULL );
|
|
assert( c != NULL );
|
|
assert( c->c_struct_state == SLAP_C_USED );
|
|
assert( c->c_conn_state != SLAP_C_INVALID );
|
|
|
|
/* c_mutex must be locked by caller */
|
|
|
|
if( c->c_conn_state != SLAP_C_CLOSING ) {
|
|
ber_socket_t sd;
|
|
|
|
ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, DETAIL1,
|
|
"connection_closing: conn %lu readying socket %d for close.\n",
|
|
c->c_connid, sd, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"connection_closing: readying conn=%lu sd=%d for close\n",
|
|
c->c_connid, sd, 0 );
|
|
#endif
|
|
/* update state to closing */
|
|
c->c_conn_state = SLAP_C_CLOSING;
|
|
|
|
/* don't listen on this port anymore */
|
|
slapd_clr_read( sd, 1 );
|
|
|
|
/* abandon active operations */
|
|
connection_abandon( c );
|
|
|
|
/* wake write blocked operations */
|
|
slapd_clr_write( sd, 1 );
|
|
ldap_pvt_thread_cond_signal( &c->c_write_cv );
|
|
}
|
|
}
|
|
|
|
static void connection_close( Connection *c )
|
|
{
|
|
ber_socket_t sd;
|
|
|
|
assert( connections != NULL );
|
|
assert( c != NULL );
|
|
assert( c->c_struct_state == SLAP_C_USED );
|
|
assert( c->c_conn_state == SLAP_C_CLOSING );
|
|
|
|
/* note: connections_mutex and c_mutex should be locked by caller */
|
|
|
|
ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
|
|
if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, DETAIL1,
|
|
"connection_close: conn %lu deferring sd %d\n",
|
|
c->c_connid, sd, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"connection_close: deferring conn=%lu sd=%d\n",
|
|
c->c_connid, sd, 0 );
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, RESULTS,
|
|
"connection_close: conn %lu sd %d\n", c->c_connid, sd, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
|
|
c->c_connid, sd, 0 );
|
|
#endif
|
|
connection_destroy( c );
|
|
}
|
|
|
|
unsigned long connections_nextid(void)
|
|
{
|
|
unsigned long id;
|
|
assert( connections != NULL );
|
|
|
|
ldap_pvt_thread_mutex_lock( &connections_mutex );
|
|
|
|
id = conn_nextid;
|
|
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
|
|
return id;
|
|
}
|
|
|
|
Connection* connection_first( ber_socket_t *index )
|
|
{
|
|
assert( connections != NULL );
|
|
assert( index != NULL );
|
|
|
|
ldap_pvt_thread_mutex_lock( &connections_mutex );
|
|
|
|
*index = 0;
|
|
|
|
return connection_next(NULL, index);
|
|
}
|
|
|
|
Connection* connection_next( Connection *c, ber_socket_t *index )
|
|
{
|
|
assert( connections != NULL );
|
|
assert( index != NULL );
|
|
assert( *index <= dtblsize );
|
|
|
|
if( c != NULL ) {
|
|
ldap_pvt_thread_mutex_unlock( &c->c_mutex );
|
|
}
|
|
|
|
c = NULL;
|
|
|
|
for(; *index < dtblsize; (*index)++) {
|
|
if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
|
|
assert( connections[*index].c_conn_state == SLAP_C_INVALID );
|
|
#ifndef HAVE_WINSOCK
|
|
continue;
|
|
#else
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
if( connections[*index].c_struct_state == SLAP_C_USED ) {
|
|
assert( connections[*index].c_conn_state != SLAP_C_INVALID );
|
|
c = &connections[(*index)++];
|
|
break;
|
|
}
|
|
|
|
assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
|
|
assert( connections[*index].c_conn_state == SLAP_C_INVALID );
|
|
}
|
|
|
|
if( c != NULL ) {
|
|
ldap_pvt_thread_mutex_lock( &c->c_mutex );
|
|
}
|
|
|
|
return c;
|
|
}
|
|
|
|
void connection_done( Connection *c )
|
|
{
|
|
assert( connections != NULL );
|
|
|
|
if( c != NULL ) {
|
|
ldap_pvt_thread_mutex_unlock( &c->c_mutex );
|
|
}
|
|
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
}
|
|
|
|
/*
|
|
* connection_activity - handle the request operation op on connection
|
|
* conn. This routine figures out what kind of operation it is and
|
|
* calls the appropriate stub to handle it.
|
|
*/
|
|
|
|
#ifdef SLAPD_MONITOR
|
|
#define INCR_OP(var,index) \
|
|
do { \
|
|
ldap_pvt_thread_mutex_lock( &num_ops_mutex ); \
|
|
(var)[(index)]++; \
|
|
ldap_pvt_thread_mutex_unlock( &num_ops_mutex ); \
|
|
} while (0)
|
|
#else /* !SLAPD_MONITOR */
|
|
#define INCR_OP(var,index)
|
|
#endif /* !SLAPD_MONITOR */
|
|
|
|
static void *
|
|
connection_operation( void *ctx, void *arg_v )
|
|
{
|
|
int rc = LDAP_OTHER;
|
|
Operation *op = arg_v;
|
|
SlapReply rs = {REP_RESULT};
|
|
ber_tag_t tag = op->o_tag;
|
|
#ifdef SLAPD_MONITOR
|
|
ber_tag_t oldtag = tag;
|
|
#endif /* SLAPD_MONITOR */
|
|
Connection *conn = op->o_conn;
|
|
void *memctx = NULL;
|
|
void *memctx_null = NULL;
|
|
ber_len_t memsiz;
|
|
|
|
ldap_pvt_thread_mutex_lock( &num_ops_mutex );
|
|
num_ops_initiated++;
|
|
ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
|
|
|
|
op->o_threadctx = ctx;
|
|
|
|
switch ( tag ) {
|
|
case LDAP_REQ_BIND:
|
|
case LDAP_REQ_UNBIND:
|
|
case LDAP_REQ_ADD:
|
|
case LDAP_REQ_DELETE:
|
|
case LDAP_REQ_MODRDN:
|
|
case LDAP_REQ_MODIFY:
|
|
case LDAP_REQ_COMPARE:
|
|
case LDAP_REQ_SEARCH:
|
|
case LDAP_REQ_ABANDON:
|
|
case LDAP_REQ_EXTENDED:
|
|
break;
|
|
default:
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, INFO, "connection_operation: "
|
|
"conn %lu unknown LDAP request 0x%lx\n",
|
|
conn->c_connid, tag, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "connection_operation: "
|
|
"conn %lu unknown LDAP request 0x%lx\n",
|
|
conn->c_connid, tag, 0 );
|
|
#endif
|
|
op->o_tag = LBER_ERROR;
|
|
rs.sr_err = LDAP_PROTOCOL_ERROR;
|
|
rs.sr_text = "unknown LDAP request";
|
|
send_ldap_disconnect( op, &rs );
|
|
rc = SLAPD_DISCONNECT;
|
|
goto operations_error;
|
|
}
|
|
|
|
if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_operation: conn %lu SASL bind in progress (tag=%ld).\n",
|
|
conn->c_connid, (long)tag, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "connection_operation: "
|
|
"error: SASL bind in progress (tag=%ld).\n",
|
|
(long) tag, 0, 0 );
|
|
#endif
|
|
send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
|
|
"SASL bind in progress" );
|
|
rc = LDAP_OPERATIONS_ERROR;
|
|
goto operations_error;
|
|
}
|
|
|
|
/* We can use Thread-Local storage for most mallocs. We can
|
|
* also use TL for ber parsing, but not on Add or Modify.
|
|
*/
|
|
#if 0
|
|
memsiz = ber_len( op->o_ber ) * 64;
|
|
if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
|
|
#endif
|
|
memsiz = SLAP_SLAB_SIZE;
|
|
|
|
memctx = slap_sl_mem_create( memsiz, ctx );
|
|
op->o_tmpmemctx = memctx;
|
|
op->o_tmpmfuncs = &slap_sl_mfuncs;
|
|
if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
|
|
/* Note - the ber and its buffer are already allocated from
|
|
* regular memory; this only affects subsequent mallocs that
|
|
* ber_scanf may invoke.
|
|
*/
|
|
ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
|
|
}
|
|
|
|
switch ( tag ) {
|
|
case LDAP_REQ_BIND:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_BIND);
|
|
rc = do_bind( op, &rs );
|
|
break;
|
|
|
|
case LDAP_REQ_UNBIND:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_UNBIND);
|
|
rc = do_unbind( op, &rs );
|
|
break;
|
|
|
|
case LDAP_REQ_ADD:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_ADD);
|
|
rc = do_add( op, &rs );
|
|
break;
|
|
|
|
case LDAP_REQ_DELETE:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_DELETE);
|
|
rc = do_delete( op, &rs );
|
|
break;
|
|
|
|
case LDAP_REQ_MODRDN:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_MODRDN);
|
|
rc = do_modrdn( op, &rs );
|
|
break;
|
|
|
|
case LDAP_REQ_MODIFY:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_MODIFY);
|
|
rc = do_modify( op, &rs );
|
|
break;
|
|
|
|
case LDAP_REQ_COMPARE:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_COMPARE);
|
|
rc = do_compare( op, &rs );
|
|
break;
|
|
|
|
case LDAP_REQ_SEARCH:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_SEARCH);
|
|
rc = do_search( op, &rs );
|
|
break;
|
|
|
|
case LDAP_REQ_ABANDON:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_ABANDON);
|
|
rc = do_abandon( op, &rs );
|
|
break;
|
|
|
|
case LDAP_REQ_EXTENDED:
|
|
INCR_OP(num_ops_initiated_, SLAP_OP_EXTENDED);
|
|
rc = do_extended( op, &rs );
|
|
break;
|
|
|
|
default:
|
|
/* not reachable */
|
|
assert( 0 );
|
|
}
|
|
|
|
operations_error:
|
|
if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
|
|
|
|
ldap_pvt_thread_mutex_lock( &num_ops_mutex );
|
|
|
|
num_ops_completed++;
|
|
#ifdef SLAPD_MONITOR
|
|
switch (oldtag) {
|
|
case LDAP_REQ_BIND:
|
|
num_ops_completed_[SLAP_OP_BIND]++;
|
|
break;
|
|
case LDAP_REQ_UNBIND:
|
|
num_ops_completed_[SLAP_OP_UNBIND]++;
|
|
break;
|
|
case LDAP_REQ_ADD:
|
|
num_ops_completed_[SLAP_OP_ADD]++;
|
|
break;
|
|
case LDAP_REQ_DELETE:
|
|
num_ops_completed_[SLAP_OP_DELETE]++;
|
|
break;
|
|
case LDAP_REQ_MODRDN:
|
|
num_ops_completed_[SLAP_OP_MODRDN]++;
|
|
break;
|
|
case LDAP_REQ_MODIFY:
|
|
num_ops_completed_[SLAP_OP_MODIFY]++;
|
|
break;
|
|
case LDAP_REQ_COMPARE:
|
|
num_ops_completed_[SLAP_OP_COMPARE]++;
|
|
break;
|
|
case LDAP_REQ_SEARCH:
|
|
num_ops_completed_[SLAP_OP_SEARCH]++;
|
|
break;
|
|
case LDAP_REQ_ABANDON:
|
|
num_ops_completed_[SLAP_OP_ABANDON]++;
|
|
break;
|
|
case LDAP_REQ_EXTENDED:
|
|
num_ops_completed_[SLAP_OP_EXTENDED]++;
|
|
break;
|
|
default:
|
|
/* not reachable */
|
|
assert( 0 );
|
|
}
|
|
#endif /* SLAPD_MONITOR */
|
|
ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
|
|
|
|
if ( op->o_cancel == SLAP_CANCEL_REQ ) {
|
|
op->o_cancel = LDAP_TOO_LATE;
|
|
}
|
|
while ( op->o_cancel != SLAP_CANCEL_NONE &&
|
|
op->o_cancel != SLAP_CANCEL_DONE )
|
|
{
|
|
ldap_pvt_thread_yield();
|
|
}
|
|
|
|
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
|
|
|
|
ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
|
|
|
|
if ( op->o_cancel != SLAP_CANCEL_ACK &&
|
|
( op->o_sync_mode & SLAP_SYNC_PERSIST ) )
|
|
{
|
|
slap_sl_mem_detach( ctx, memctx );
|
|
|
|
} else if ( op->o_sync_slog_size != -1 ) {
|
|
slap_sl_mem_detach( ctx, memctx );
|
|
LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
|
|
LDAP_STAILQ_NEXT(op, o_next) = NULL;
|
|
conn->c_n_ops_executing--;
|
|
conn->c_n_ops_completed++;
|
|
|
|
} else {
|
|
LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
|
|
LDAP_STAILQ_NEXT(op, o_next) = NULL;
|
|
slap_op_free( op );
|
|
conn->c_n_ops_executing--;
|
|
conn->c_n_ops_completed++;
|
|
}
|
|
|
|
switch( tag ) {
|
|
case LBER_ERROR:
|
|
case LDAP_REQ_UNBIND:
|
|
/* c_mutex is locked */
|
|
connection_closing( conn );
|
|
break;
|
|
|
|
case LDAP_REQ_BIND:
|
|
conn->c_sasl_bind_in_progress =
|
|
rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
|
|
|
|
if( conn->c_conn_state == SLAP_C_BINDING) {
|
|
conn->c_conn_state = SLAP_C_ACTIVE;
|
|
}
|
|
}
|
|
|
|
connection_resched( conn );
|
|
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
|
|
return NULL;
|
|
}
|
|
|
|
static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
|
|
|
|
int connection_client_setup(
|
|
ber_socket_t s,
|
|
ldap_pvt_thread_start_t *func,
|
|
void *arg )
|
|
{
|
|
int rc;
|
|
Connection *c;
|
|
|
|
rc = connection_init( s, (Listener *)&dummy_list, "", "",
|
|
CONN_IS_CLIENT, 0, NULL );
|
|
if ( rc < 0 ) return -1;
|
|
|
|
c = connection_get( s );
|
|
c->c_clientfunc = func;
|
|
c->c_clientarg = arg;
|
|
connection_return( c );
|
|
slapd_add_internal( s, 0 );
|
|
slapd_set_read( s, 1 );
|
|
return 0;
|
|
}
|
|
|
|
void connection_client_enable(
|
|
ber_socket_t s )
|
|
{
|
|
slapd_set_read( s, 1 );
|
|
}
|
|
|
|
void connection_client_stop(
|
|
ber_socket_t s )
|
|
{
|
|
Connection *c;
|
|
|
|
/* get (locked) connection */
|
|
c = connection_get( s );
|
|
|
|
assert( c->c_conn_state == SLAP_C_CLIENT );
|
|
|
|
c->c_listener = NULL;
|
|
c->c_conn_state = SLAP_C_INVALID;
|
|
c->c_struct_state = SLAP_C_UNUSED;
|
|
connection_return( c );
|
|
slapd_remove( s, 0, 1 );
|
|
}
|
|
|
|
int connection_read(ber_socket_t s)
|
|
{
|
|
int rc = 0;
|
|
Connection *c;
|
|
|
|
assert( connections != NULL );
|
|
|
|
ldap_pvt_thread_mutex_lock( &connections_mutex );
|
|
|
|
/* get (locked) connection */
|
|
c = connection_get( s );
|
|
|
|
if( c == NULL ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, INFO,
|
|
"connection_read: sock %ld no connection\n", (long)s, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"connection_read(%ld): no connection!\n",
|
|
(long) s, 0, 0 );
|
|
#endif
|
|
slapd_remove(s, 1, 0);
|
|
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return -1;
|
|
}
|
|
|
|
c->c_n_read++;
|
|
|
|
if( c->c_conn_state == SLAP_C_CLOSING ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, INFO,
|
|
"connection_read: conn %lu connection closing, ignoring input\n",
|
|
c->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"connection_read(%d): closing, ignoring input for id=%lu\n",
|
|
s, c->c_connid, 0 );
|
|
#endif
|
|
connection_return( c );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return 0;
|
|
}
|
|
|
|
if ( c->c_conn_state == SLAP_C_CLIENT ) {
|
|
slapd_clr_read( s, 0 );
|
|
ldap_pvt_thread_pool_submit( &connection_pool,
|
|
c->c_clientfunc, c->c_clientarg );
|
|
connection_return( c );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return 0;
|
|
}
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, DETAIL1,
|
|
"connection_read: conn %lu checking for input.\n",
|
|
c->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"connection_read(%d): checking for input on id=%lu\n",
|
|
s, c->c_connid, 0 );
|
|
#endif
|
|
|
|
#ifdef HAVE_TLS
|
|
if ( c->c_is_tls && c->c_needs_tls_accept ) {
|
|
rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
|
|
if ( rc < 0 ) {
|
|
#if 0 /* required by next #if 0 */
|
|
struct timeval tv;
|
|
fd_set rfd;
|
|
#endif
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_read: conn %lu TLS accept error, error %d\n",
|
|
c->c_connid, rc, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"connection_read(%d): TLS accept error "
|
|
"error=%d id=%lu, closing\n",
|
|
s, rc, c->c_connid );
|
|
#endif
|
|
c->c_needs_tls_accept = 0;
|
|
/* connections_mutex and c_mutex are locked */
|
|
connection_closing( c );
|
|
|
|
#if 0
|
|
/* Drain input before close, to allow SSL error codes
|
|
* to propagate to client. */
|
|
FD_ZERO(&rfd);
|
|
FD_SET(s, &rfd);
|
|
for (rc=1; rc>0;) {
|
|
tv.tv_sec = 1;
|
|
tv.tv_usec = 0;
|
|
rc = select(s+1, &rfd, NULL, NULL, &tv);
|
|
if (rc == 1) {
|
|
ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN, NULL);
|
|
}
|
|
}
|
|
#endif
|
|
connection_close( c );
|
|
|
|
} else if ( rc == 0 ) {
|
|
void *ssl;
|
|
struct berval authid = BER_BVNULL;
|
|
|
|
c->c_needs_tls_accept = 0;
|
|
|
|
/* we need to let SASL know */
|
|
ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
|
|
|
|
c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
|
|
if( c->c_tls_ssf > c->c_ssf ) {
|
|
c->c_ssf = c->c_tls_ssf;
|
|
}
|
|
|
|
rc = dnX509peerNormalize( ssl, &authid );
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, INFO, "connection_read: "
|
|
"conn %lu unable to get TLS client DN, error %d\n",
|
|
c->c_connid, rc, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
|
|
"unable to get TLS client DN, error=%d id=%lu\n",
|
|
s, rc, c->c_connid );
|
|
#endif
|
|
}
|
|
slap_sasl_external( c, c->c_tls_ssf, &authid );
|
|
if ( authid.bv_val ) free( authid.bv_val );
|
|
}
|
|
|
|
/* if success and data is ready, fall thru to data input loop */
|
|
if( rc != 0 ||
|
|
!ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
|
|
{
|
|
connection_return( c );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_CYRUS_SASL
|
|
if ( c->c_sasl_layers ) {
|
|
/* If previous layer is not removed yet, give up for now */
|
|
if ( !c->c_sasl_sockctx ) {
|
|
connection_return( c );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return 0;
|
|
}
|
|
|
|
c->c_sasl_layers = 0;
|
|
|
|
rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
|
|
|
|
if( rc != LDAP_SUCCESS ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_read: conn %lu SASL install error %d, closing\n",
|
|
c->c_connid, rc, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"connection_read(%d): SASL install error "
|
|
"error=%d id=%lu, closing\n",
|
|
s, rc, c->c_connid );
|
|
#endif
|
|
/* connections_mutex and c_mutex are locked */
|
|
connection_closing( c );
|
|
connection_close( c );
|
|
connection_return( c );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#define CONNECTION_INPUT_LOOP 1
|
|
/* #define DATA_READY_LOOP 1 */
|
|
|
|
do {
|
|
/* How do we do this without getting into a busy loop ? */
|
|
rc = connection_input( c );
|
|
}
|
|
#ifdef DATA_READY_LOOP
|
|
while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
|
|
#elif CONNECTION_INPUT_LOOP
|
|
while(!rc);
|
|
#else
|
|
while(0);
|
|
#endif
|
|
|
|
if( rc < 0 ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_read: conn %lu input error %d, closing.\n",
|
|
c->c_connid, rc, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"connection_read(%d): input error=%d id=%lu, closing.\n",
|
|
s, rc, c->c_connid );
|
|
#endif
|
|
/* connections_mutex and c_mutex are locked */
|
|
connection_closing( c );
|
|
connection_close( c );
|
|
connection_return( c );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return 0;
|
|
}
|
|
|
|
if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
|
|
slapd_set_read( s, 1 );
|
|
}
|
|
|
|
if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
|
|
slapd_set_write( s, 1 );
|
|
}
|
|
|
|
connection_return( c );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
connection_input(
|
|
Connection *conn )
|
|
{
|
|
Operation *op;
|
|
ber_tag_t tag;
|
|
ber_len_t len;
|
|
ber_int_t msgid;
|
|
BerElement *ber;
|
|
int rc;
|
|
#ifdef LDAP_CONNECTIONLESS
|
|
Sockaddr peeraddr;
|
|
char *cdn = NULL;
|
|
#endif
|
|
char *defer = NULL;
|
|
|
|
if ( conn->c_currentber == NULL &&
|
|
( conn->c_currentber = ber_alloc()) == NULL )
|
|
{
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_input: conn %lu ber_alloc failed.\n",
|
|
conn->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
|
|
#endif
|
|
return -1;
|
|
}
|
|
|
|
errno = 0;
|
|
|
|
#ifdef LDAP_CONNECTIONLESS
|
|
if ( conn->c_is_udp ) {
|
|
char peername[sizeof("IP=255.255.255.255:65336")];
|
|
len = ber_int_sb_read(conn->c_sb, &peeraddr,
|
|
sizeof(struct sockaddr));
|
|
if (len != sizeof(struct sockaddr))
|
|
return 1;
|
|
sprintf( peername, "IP=%s:%d",
|
|
inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
|
|
(unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
|
|
Statslog( LDAP_DEBUG_STATS,
|
|
"conn=%lu UDP request from %s (%s) accepted.\n",
|
|
conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
|
|
}
|
|
#endif
|
|
tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
|
|
if ( tag != LDAP_TAG_MESSAGE ) {
|
|
int err = errno;
|
|
ber_socket_t sd;
|
|
|
|
ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_input: conn %lu ber_get_next failed, errno %d (%s).\n",
|
|
conn->c_connid, err, sock_errstr(err) );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"ber_get_next on fd %d failed errno=%d (%s)\n",
|
|
sd, err, sock_errstr(err) );
|
|
#endif
|
|
if ( err != EWOULDBLOCK && err != EAGAIN ) {
|
|
/* log, close and send error */
|
|
ber_free( conn->c_currentber, 1 );
|
|
conn->c_currentber = NULL;
|
|
|
|
return -2;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
ber = conn->c_currentber;
|
|
conn->c_currentber = NULL;
|
|
|
|
if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
|
|
/* log, close and send error */
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_input: conn %lu ber_get_int returns 0x%lx.\n",
|
|
conn->c_connid, tag, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n",
|
|
tag, 0, 0 );
|
|
#endif
|
|
ber_free( ber, 1 );
|
|
return -1;
|
|
}
|
|
|
|
if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
|
|
/* log, close and send error */
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_input: conn %lu ber_peek_tag returns 0x%lx.\n",
|
|
conn->c_connid, tag, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n",
|
|
tag, 0, 0 );
|
|
#endif
|
|
ber_free( ber, 1 );
|
|
|
|
return -1;
|
|
}
|
|
|
|
#ifdef LDAP_CONNECTIONLESS
|
|
if( conn->c_is_udp ) {
|
|
if( tag == LBER_OCTETSTRING ) {
|
|
ber_get_stringa( ber, &cdn );
|
|
tag = ber_peek_tag(ber, &len);
|
|
}
|
|
if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_input: conn %lu invalid req for UDP 0x%lx.\n",
|
|
conn->c_connid, tag, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
|
|
#endif
|
|
ber_free( ber, 1 );
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|
|
if(tag == LDAP_REQ_BIND) {
|
|
/* immediately abandon all exiting operations upon BIND */
|
|
connection_abandon( conn );
|
|
}
|
|
|
|
op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
|
|
|
|
op->o_conn = conn;
|
|
op->o_assertion = NULL;
|
|
op->o_preread_attrs = NULL;
|
|
op->o_postread_attrs = NULL;
|
|
op->o_vrFilter = NULL;
|
|
/* clear state if the connection is being reused from inactive */
|
|
if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
|
|
memset( &conn->c_pagedresults_state, 0, sizeof( conn->c_pagedresults_state ) );
|
|
}
|
|
op->o_pagedresults_state = conn->c_pagedresults_state;
|
|
|
|
op->o_res_ber = NULL;
|
|
|
|
#ifdef LDAP_CONNECTIONLESS
|
|
if (conn->c_is_udp) {
|
|
if ( cdn ) {
|
|
ber_str2bv( cdn, 0, 1, &op->o_dn );
|
|
op->o_protocol = LDAP_VERSION2;
|
|
}
|
|
op->o_res_ber = ber_alloc_t( LBER_USE_DER );
|
|
if (op->o_res_ber == NULL) return 1;
|
|
|
|
rc = ber_write( op->o_res_ber, (char *)&peeraddr,
|
|
sizeof(struct sockaddr), 0 );
|
|
|
|
if (rc != sizeof(struct sockaddr)) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, INFO,
|
|
"connection_input: conn %lu ber_write failed\n",
|
|
conn->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
if (op->o_protocol == LDAP_VERSION2) {
|
|
rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
|
|
if (rc == -1) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, INFO,
|
|
"connection_input: conn %lu put outer sequence failed\n",
|
|
conn->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
|
|
#endif
|
|
return rc;
|
|
}
|
|
}
|
|
}
|
|
#endif /* LDAP_CONNECTIONLESS */
|
|
|
|
rc = 0;
|
|
|
|
/* Don't process requests when the conn is in the middle of a
|
|
* Bind, or if it's closing. Also, don't let any single conn
|
|
* use up all the available threads, and don't execute if we're
|
|
* currently blocked on output. And don't execute if there are
|
|
* already pending ops, let them go first. Abandon operations
|
|
* get exceptions to some, but not all, cases.
|
|
*/
|
|
if (tag != LDAP_REQ_ABANDON && conn->c_conn_state == SLAP_C_CLOSING) {
|
|
defer = "closing";
|
|
} else if (tag != LDAP_REQ_ABANDON && conn->c_writewaiter) {
|
|
defer = "awaiting write";
|
|
} else if (conn->c_n_ops_executing >= connection_pool_max/2) {
|
|
defer = "too many executing";
|
|
} else if (conn->c_conn_state == SLAP_C_BINDING) {
|
|
defer = "binding";
|
|
} else if (tag != LDAP_REQ_ABANDON && conn->c_n_ops_pending) {
|
|
defer = "pending operations";
|
|
}
|
|
|
|
if( defer ) {
|
|
int max = conn->c_dn.bv_len
|
|
? slap_conn_max_pending_auth
|
|
: slap_conn_max_pending;
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, INFO,
|
|
"connection_input: conn %lu deferring operation: %s\n",
|
|
conn->c_connid, defer, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"connection_input: conn=%lu deferring operation: %s\n",
|
|
conn->c_connid, defer, 0 );
|
|
#endif
|
|
conn->c_n_ops_pending++;
|
|
LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
|
|
if ( conn->c_n_ops_pending > max ) {
|
|
rc = -1;
|
|
} else {
|
|
rc = 1;
|
|
}
|
|
} else {
|
|
conn->c_n_ops_executing++;
|
|
connection_op_activate( op );
|
|
}
|
|
|
|
#ifdef NO_THREADS
|
|
if ( conn->c_struct_state != SLAP_C_USED ) {
|
|
/* connection must have got closed underneath us */
|
|
return 1;
|
|
}
|
|
#endif
|
|
assert( conn->c_struct_state == SLAP_C_USED );
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
connection_resched( Connection *conn )
|
|
{
|
|
Operation *op;
|
|
|
|
if( conn->c_conn_state == SLAP_C_CLOSING ) {
|
|
int rc;
|
|
ber_socket_t sd;
|
|
ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
|
|
|
|
/* us trylock to avoid possible deadlock */
|
|
rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
|
|
|
|
if( rc ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, DETAIL1,
|
|
"connection_resched: conn %lu reaquiring locks.\n",
|
|
conn->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"connection_resched: reaquiring locks conn=%lu sd=%d\n",
|
|
conn->c_connid, sd, 0 );
|
|
#endif
|
|
/*
|
|
* reaquire locks in the right order...
|
|
* this may allow another thread to close this connection,
|
|
* so recheck state below.
|
|
*/
|
|
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
|
|
ldap_pvt_thread_mutex_lock( &connections_mutex );
|
|
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
|
|
}
|
|
|
|
if( conn->c_conn_state != SLAP_C_CLOSING ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, INFO,
|
|
"connection_resched: conn %lu closed by other thread.\n",
|
|
conn->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "connection_resched: "
|
|
"closed by other thread conn=%lu sd=%d\n",
|
|
conn->c_connid, sd, 0 );
|
|
#endif
|
|
} else {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, DETAIL1,
|
|
"connection_resched: conn %lu attempting closing.\n",
|
|
conn->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "connection_resched: "
|
|
"attempting closing conn=%lu sd=%d\n",
|
|
conn->c_connid, sd, 0 );
|
|
#endif
|
|
connection_close( conn );
|
|
}
|
|
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return 0;
|
|
}
|
|
|
|
if( conn->c_conn_state != SLAP_C_ACTIVE || conn->c_writewaiter ) {
|
|
/* other states need different handling */
|
|
return 0;
|
|
}
|
|
|
|
while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
|
|
if ( conn->c_n_ops_executing > connection_pool_max/2 ) {
|
|
break;
|
|
}
|
|
LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
|
|
LDAP_STAILQ_NEXT(op, o_next) = NULL;
|
|
/* pending operations should not be marked for abandonment */
|
|
assert(!op->o_abandon);
|
|
|
|
conn->c_n_ops_pending--;
|
|
conn->c_n_ops_executing++;
|
|
|
|
connection_op_activate( op );
|
|
|
|
if ( conn->c_conn_state == SLAP_C_BINDING ) {
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int connection_op_activate( Operation *op )
|
|
{
|
|
int status;
|
|
ber_tag_t tag = op->o_tag;
|
|
|
|
if(tag == LDAP_REQ_BIND) {
|
|
op->o_conn->c_conn_state = SLAP_C_BINDING;
|
|
}
|
|
|
|
if (!op->o_dn.bv_len) {
|
|
op->o_authz = op->o_conn->c_authz;
|
|
ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
|
|
ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
|
|
}
|
|
op->o_authtype = op->o_conn->c_authtype;
|
|
ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
|
|
|
|
if (!op->o_protocol) {
|
|
op->o_protocol = op->o_conn->c_protocol
|
|
? op->o_conn->c_protocol : LDAP_VERSION3;
|
|
}
|
|
if (op->o_conn->c_conn_state == SLAP_C_INACTIVE
|
|
&& op->o_protocol > LDAP_VERSION2)
|
|
{
|
|
op->o_conn->c_conn_state = SLAP_C_ACTIVE;
|
|
}
|
|
|
|
op->o_connid = op->o_conn->c_connid;
|
|
|
|
LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
|
|
|
|
status = ldap_pvt_thread_pool_submit( &connection_pool,
|
|
connection_operation, (void *) op );
|
|
|
|
if ( status != 0 ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_op_activate: conn %lu thread pool submit failed.\n",
|
|
op->o_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"ldap_pvt_thread_pool_submit: failed (%d) for conn=%lu\n",
|
|
status, op->o_connid, 0 );
|
|
#endif
|
|
/* should move op to pending list */
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
int connection_write(ber_socket_t s)
|
|
{
|
|
Connection *c;
|
|
|
|
assert( connections != NULL );
|
|
|
|
ldap_pvt_thread_mutex_lock( &connections_mutex );
|
|
|
|
c = connection_get( s );
|
|
|
|
slapd_clr_write( s, 0);
|
|
|
|
if( c == NULL ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, ERR,
|
|
"connection_write: sock %ld no connection!\n", (long)s, 0, 0);
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"connection_write(%ld): no connection!\n",
|
|
(long)s, 0, 0 );
|
|
#endif
|
|
slapd_remove(s, 1, 0);
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return -1;
|
|
}
|
|
|
|
c->c_n_write++;
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( CONNECTION, DETAIL1,
|
|
"connection_write conn %lu waking output.\n", c->c_connid, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"connection_write(%d): waking output for id=%lu\n",
|
|
s, c->c_connid, 0 );
|
|
#endif
|
|
ldap_pvt_thread_cond_signal( &c->c_write_cv );
|
|
|
|
if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
|
|
slapd_set_read( s, 1 );
|
|
}
|
|
if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
|
|
slapd_set_write( s, 1 );
|
|
}
|
|
connection_return( c );
|
|
ldap_pvt_thread_mutex_unlock( &connections_mutex );
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
connection_fake_init(
|
|
Connection *conn,
|
|
Operation *op,
|
|
void *ctx )
|
|
{
|
|
conn->c_connid = -1;
|
|
conn->c_send_ldap_result = slap_send_ldap_result;
|
|
conn->c_send_search_entry = slap_send_search_entry;
|
|
conn->c_send_search_reference = slap_send_search_reference;
|
|
conn->c_listener = (Listener *)&dummy_list;
|
|
conn->c_peer_domain = slap_empty_bv;
|
|
conn->c_peer_name = slap_empty_bv;
|
|
|
|
/* set memory context */
|
|
op->o_tmpmemctx = slap_sl_mem_create( SLAP_SLAB_SIZE, ctx );
|
|
op->o_tmpmfuncs = &slap_sl_mfuncs;
|
|
op->o_threadctx = ctx;
|
|
|
|
op->o_conn = conn;
|
|
op->o_connid = op->o_conn->c_connid;
|
|
|
|
op->o_time = slap_get_time();
|
|
}
|
|
|
|
void
|
|
connection_assign_nextid( Connection *conn )
|
|
{
|
|
int rc;
|
|
|
|
ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
|
|
conn->c_connid = conn_nextid++;
|
|
ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
|
|
}
|
|
|