+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+
#include "portable.h"
#include <stdio.h>
+#include <limits.h>
+#include <ac/socket.h>
#include <ac/errno.h>
#include <ac/signal.h>
-#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
+#include <ac/unistd.h>
+#include "ldap_pvt.h"
+#include "lutil.h"
#include "slap.h"
+/* protected by connections_mutex */
+static ldap_pvt_thread_mutex_t connections_mutex;
+static Connection *connections = NULL;
+static unsigned long conn_nextid = 0;
+
+/* structure state (protected by connections_mutex) */
+#define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
+#define SLAP_C_UNUSED 0x01
+#define SLAP_C_USED 0x02
+
+/* connection state (protected by c_mutex ) */
+#define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
+#define SLAP_C_INACTIVE 0x01 /* zero threads */
+#define SLAP_C_ACTIVE 0x02 /* one or more threads */
+#define SLAP_C_BINDING 0x03 /* binding */
+#define SLAP_C_CLOSING 0x04 /* closing */
+
+const char *
+connection_state2str( int state )
+{
+ switch( state ) {
+ case SLAP_C_INVALID: return "!";
+ case SLAP_C_INACTIVE: return "|";
+ case SLAP_C_ACTIVE: return "";
+ case SLAP_C_BINDING: return "B";
+ case SLAP_C_CLOSING: return "C";
+ }
+
+ return "?";
+}
+
+static Connection* connection_get( ber_socket_t s );
+
+static int connection_input( Connection *c );
+static void connection_close( Connection *c );
+
+static int connection_op_activate( Connection *conn, Operation *op );
+static int connection_resched( Connection *conn );
+static void connection_abandon( Connection *conn );
+static void connection_destroy( Connection *c );
+
struct co_arg {
Connection *co_conn;
Operation *co_op;
};
+/*
+ * Initialize connection management infrastructure.
+ */
+int connections_init(void)
+{
+ assert( connections == NULL );
+
+ if( connections != NULL) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
+ "connections_init: already initialized.\n" ));
+#else
+ Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
+ 0, 0, 0 );
+#endif
+ return -1;
+ }
+
+ /* should check return of every call */
+ ldap_pvt_thread_mutex_init( &connections_mutex );
+
+ connections = (Connection *) calloc( dtblsize, sizeof(Connection) );
+
+ if( connections == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
+ "connections_init: allocation (%d * %ld) of connection array failed\n",
+ dtblsize, (long) sizeof(Connection) ));
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "connections_init: allocation (%d*%ld) of connection array failed\n",
+ dtblsize, (long) sizeof(Connection), 0 );
+#endif
+ return -1;
+ }
+
+ assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
+ assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
+
+ /*
+ * per entry initialization of the Connection array initialization
+ * will be done by connection_init()
+ */
+
+ return 0;
+}
+
+/*
+ * Destroy connection management infrastructure.
+ */
+int connections_destroy(void)
+{
+ ber_socket_t i;
+
+ /* should check return of every call */
+
+ if( connections == NULL) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
+ "connections_destroy: nothing to destroy.\n"));
+#else
+ Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
+ 0, 0, 0 );
+#endif
+ return -1;
+ }
+
+ for ( i = 0; i < dtblsize; i++ ) {
+ if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
+ ber_sockbuf_free( connections[i].c_sb );
+ ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
+ ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
+ ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
+ }
+ }
+
+ free( connections );
+ connections = NULL;
+
+ ldap_pvt_thread_mutex_destroy( &connections_mutex );
+ return 0;
+}
+
+/*
+ * shutdown all connections
+ */
+int connections_shutdown(void)
+{
+ ber_socket_t i;
+
+ ldap_pvt_thread_mutex_lock( &connections_mutex );
+
+ for ( i = 0; i < dtblsize; i++ ) {
+ if( connections[i].c_struct_state != SLAP_C_USED ) {
+ continue;
+ }
+
+ ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
+
+ /* connections_mutex and c_mutex are locked */
+ connection_closing( &connections[i] );
+ connection_close( &connections[i] );
+
+ ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
+ }
+
+ ldap_pvt_thread_mutex_unlock( &connections_mutex );
+
+ return 0;
+}
+
+/*
+ * Timeout idle connections.
+ */
+int connections_timeout_idle(time_t now)
+{
+ int i = 0;
+ int connindex;
+ Connection* c;
+
+ for( c = connection_first( &connindex );
+ c != NULL;
+ c = connection_next( c, &connindex ) )
+ {
+ if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
+ /* close it */
+ connection_closing( c );
+ connection_close( c );
+ i++;
+ }
+ }
+ connection_done( c );
+
+ return i;
+}
+
+static Connection* connection_get( ber_socket_t s )
+{
+ /* connections_mutex should be locked by caller */
+
+ Connection *c;
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ENTRY,
+ "connection_get: socket %ld\n", (long)s ));
+#else
+ Debug( LDAP_DEBUG_ARGS,
+ "connection_get(%ld)\n",
+ (long) s, 0, 0 );
+#endif
+
+ assert( connections != NULL );
+
+ if(s == AC_SOCKET_INVALID) {
+ return NULL;
+ }
+
+#ifndef HAVE_WINSOCK
+ c = &connections[s];
+
+ assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
+
+#else
+ c = NULL;
+ {
+ ber_socket_t i, sd;
+
+ for(i=0; i<dtblsize; i++) {
+ ber_sockbuf_ctrl( connections[i].c_sb,
+ LBER_SB_OPT_GET_FD, &sd );
+
+ if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
+ assert( connections[i].c_conn_state == SLAP_C_INVALID );
+ assert( connections[i].c_sb == 0 );
+ break;
+ }
+
+ if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
+ assert( connections[i].c_conn_state == SLAP_C_INVALID );
+ assert( sd == AC_SOCKET_INVALID );
+ continue;
+ }
+
+ /* state can actually change from used -> unused by resched,
+ * so don't assert details here.
+ */
+
+ if( sd == s ) {
+ c = &connections[i];
+ break;
+ }
+ }
+ }
+#endif
+
+ if( c != NULL ) {
+ ber_socket_t sd;
+
+ ldap_pvt_thread_mutex_lock( &c->c_mutex );
+
+ ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
+ if( c->c_struct_state != SLAP_C_USED ) {
+ /* connection must have been closed due to resched */
+
+ assert( c->c_conn_state == SLAP_C_INVALID );
+ assert( sd == AC_SOCKET_INVALID );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ARGS,
+ "connection_get: connection %d not used\n", s ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_get(%d): connection not used\n",
+ s, 0, 0 );
+#endif
+
+ ldap_pvt_thread_mutex_unlock( &c->c_mutex );
+ return NULL;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
+ "connection_get: get for %d got connid %ld\n",s, c->c_connid ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_get(%d): got connid=%ld\n",
+ s, c->c_connid, 0 );
+#endif
+
+ c->c_n_get++;
+
+ assert( c->c_struct_state == SLAP_C_USED );
+ assert( c->c_conn_state != SLAP_C_INVALID );
+ assert( sd != AC_SOCKET_INVALID );
+
+#ifdef SLAPD_MONITOR
+ c->c_activitytime = slap_get_time();
+#else
+ if( global_idletimeout > 0 ) {
+ c->c_activitytime = slap_get_time();
+ }
+#endif
+ }
+
+ return c;
+}
+
+static void connection_return( Connection *c )
+{
+ ldap_pvt_thread_mutex_unlock( &c->c_mutex );
+}
+
+long connection_init(
+ ber_socket_t s,
+ const char* url,
+ const char* dnsname,
+ const char* peername,
+ const char* sockname,
+ int tls_udp_option,
+ slap_ssf_t ssf,
+ const char *authid )
+{
+ unsigned long id;
+ Connection *c;
+
+ assert( connections != NULL );
+
+ assert( dnsname != NULL );
+ assert( peername != NULL );
+ assert( sockname != NULL );
+
+#ifndef HAVE_TLS
+ assert( tls_udp_option != 1 );
+#endif
+
+ if( s == AC_SOCKET_INVALID ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
+ "connection_init: init of socket %ld invalid.\n", (long)s ));
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "connection_init(%ld): invalid.\n",
+ (long) s, 0, 0 );
+#endif
+ return -1;
+ }
+
+ assert( s >= 0 );
+#ifndef HAVE_WINSOCK
+ assert( s < dtblsize );
+#endif
+
+ ldap_pvt_thread_mutex_lock( &connections_mutex );
+
+#ifndef HAVE_WINSOCK
+ c = &connections[s];
+
+#else
+ {
+ ber_socket_t i;
+
+ c = NULL;
+
+ for( i=0; i < dtblsize; i++) {
+ ber_socket_t sd;
+
+ if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
+ assert( connections[i].c_sb == 0 );
+ c = &connections[i];
+ break;
+ }
+
+ sd = AC_SOCKET_INVALID;
+ if (connections[i].c_sb != NULL)
+ ber_sockbuf_ctrl( connections[i].c_sb, LBER_SB_OPT_GET_FD, &sd );
+
+ if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
+ assert( sd == AC_SOCKET_INVALID );
+ c = &connections[i];
+ break;
+ }
+
+ assert( connections[i].c_struct_state == SLAP_C_USED );
+ assert( connections[i].c_conn_state != SLAP_C_INVALID );
+ assert( sd != AC_SOCKET_INVALID );
+ }
+
+ if( c == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
+ "connection_init: skt %d connection table full (%d/%d)\n",
+ s, i, dtblsize ));
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "connection_init(%d): connection table full (%d/%d)\n",
+ s, i, dtblsize);
+#endif
+ ldap_pvt_thread_mutex_unlock( &connections_mutex );
+ return -1;
+ }
+ }
+#endif
+
+ assert( c != NULL );
+
+ if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
+ c->c_authmech = NULL;
+ c->c_dn.bv_val = NULL;
+ c->c_dn.bv_len = 0;
+ c->c_ndn.bv_val = NULL;
+ c->c_ndn.bv_len = 0;
+ c->c_cdn.bv_val = NULL;
+ c->c_cdn.bv_len = 0;
+ c->c_groups = NULL;
+
+ c->c_listener_url = NULL;
+ c->c_peer_domain = NULL;
+ c->c_peer_name = NULL;
+ c->c_sock_name = NULL;
+
+ LDAP_STAILQ_INIT(&c->c_ops);
+ LDAP_STAILQ_INIT(&c->c_pending_ops);
+
+ c->c_sasl_bind_mech = NULL;
+ c->c_sasl_context = NULL;
+ c->c_sasl_extra = NULL;
+
+ 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_currentber = NULL;
+
+ /* should check status of thread calls */
+ ldap_pvt_thread_mutex_init( &c->c_mutex );
+ ldap_pvt_thread_mutex_init( &c->c_write_mutex );
+ ldap_pvt_thread_cond_init( &c->c_write_cv );
+
+ c->c_struct_state = SLAP_C_UNUSED;
+ }
+
+ ldap_pvt_thread_mutex_lock( &c->c_mutex );
+
+ assert( c->c_struct_state == SLAP_C_UNUSED );
+ assert( c->c_authmech == NULL );
+ assert( c->c_dn.bv_val == NULL );
+ assert( c->c_ndn.bv_val == NULL );
+ assert( c->c_cdn.bv_val == NULL );
+ assert( c->c_groups == NULL );
+ assert( c->c_listener_url == NULL );
+ assert( c->c_peer_domain == NULL );
+ assert( c->c_peer_name == NULL );
+ assert( c->c_sock_name == NULL );
+ assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
+ assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
+ assert( c->c_sasl_bind_mech == NULL );
+ assert( c->c_sasl_context == NULL );
+ assert( c->c_sasl_extra == NULL );
+ assert( c->c_currentber == NULL );
+
+ c->c_listener_url = ch_strdup( url );
+ c->c_peer_domain = ch_strdup( dnsname );
+ c->c_peer_name = ch_strdup( peername );
+ c->c_sock_name = ch_strdup( sockname );
+
+ 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 (tls_udp_option == 2)
+ {
+ 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", LDAP_LEVEL_INFO,
+ "connection_init: conn %d set nonblocking failed\n",
+ c->c_connid ));
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "connection_init(%d, %s): set nonblocking failed\n",
+ s, c->c_peer_name, 0 );
+#endif
+ }
+
+ id = c->c_connid = conn_nextid++;
+
+ 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 ( tls_udp_option == 1 ) {
+ 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 );
+ 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 != NULL ) {
+ free(c->c_authmech);
+ c->c_authmech = NULL;
+ }
+
+ if(c->c_dn.bv_val != NULL) {
+ free(c->c_dn.bv_val);
+ c->c_dn.bv_val = NULL;
+ }
+ c->c_dn.bv_len = 0;
+ if(c->c_ndn.bv_val != NULL) {
+ free(c->c_ndn.bv_val);
+ c->c_ndn.bv_val = NULL;
+ }
+ c->c_ndn.bv_len = 0;
+
+ if(c->c_cdn.bv_val != NULL) {
+ free(c->c_cdn.bv_val);
+ c->c_cdn.bv_val = NULL;
+ }
+ c->c_cdn.bv_len = 0;
+
+ c->c_authc_backend = NULL;
+ c->c_authz_backend = NULL;
+
+ {
+ GroupAssertion *g, *n;
+ for (g = c->c_groups; g; g=n)
+ {
+ n = g->next;
+ free(g);
+ }
+ c->c_groups = NULL;
+ }
+
+}
+
+static void
+connection_destroy( Connection *c )
+{
+ /* note: connections_mutex should be locked by caller */
+ ber_socket_t sd;
+
+ 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) );
+
+ backend_connection_destroy(c);
+
+ c->c_protocol = 0;
+ c->c_connid = -1;
+
+ c->c_activitytime = c->c_starttime = 0;
+
+ connection2anonymous( c );
+
+ if(c->c_listener_url != NULL) {
+ free(c->c_listener_url);
+ c->c_listener_url = NULL;
+ }
+
+ if(c->c_peer_domain != NULL) {
+ free(c->c_peer_domain);
+ c->c_peer_domain = NULL;
+ }
+ if(c->c_peer_name != NULL) {
+#ifdef LDAP_PF_lOCAL
+ /*
+ * If peer was a domain socket, unlink. Mind you,
+ * they may be un-named. Should we leave this to
+ * the client?
+ */
+ if (strncmp(c->c_peer_name, "PATH=", 5) == 0) {
+ char *path = c->c_peer_name + 5;
+ if (path != '\0') {
+ (void)unlink(path);
+ }
+ }
+#endif /* LDAP_PF_LOCAL */
+
+ free(c->c_peer_name);
+ c->c_peer_name = NULL;
+ }
+ if(c->c_sock_name != NULL) {
+ free(c->c_sock_name);
+ c->c_sock_name = NULL;
+ }
+
+ c->c_sasl_bind_in_progress = 0;
+ if(c->c_sasl_bind_mech != NULL) {
+ free(c->c_sasl_bind_mech);
+ c->c_sasl_bind_mech = NULL;
+ }
+
+ 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, 0 );
+
+ Statslog( LDAP_DEBUG_STATS,
+ "conn=%ld fd=%d closed\n",
+ c->c_connid, 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;
+}
+
+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) {
+ ldap_pvt_thread_mutex_lock( &o->o_abandonmutex );
+ o->o_abandon = 1;
+ ldap_pvt_thread_mutex_unlock( &o->o_abandonmutex );
+ }
+
+ /* 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", LDAP_LEVEL_DETAIL1,
+ "connection_closing: conn %d readying socket %d for close.\n",
+ c->c_connid, sd ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_closing: readying conn=%ld 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", LDAP_LEVEL_DETAIL1,
+ "connection_close: conn %d deferring sd %d\n",
+ c->c_connid, sd ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_close: deferring conn=%ld sd=%d\n",
+ c->c_connid, sd, 0 );
+#endif
+ return;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
+ "connection_close: conn %d sd %d\n",
+ c->c_connid, sd ));
+#else
+ Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%ld 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
static void *
connection_operation( void *arg_v )
{
+ int rc;
struct co_arg *arg = arg_v;
- unsigned long len;
+ ber_tag_t tag = arg->co_op->o_tag;
+ Connection *conn = arg->co_conn;
- pthread_mutex_lock( &arg->co_conn->c_opsmutex );
- arg->co_conn->c_opsinitiated++;
- pthread_mutex_unlock( &arg->co_conn->c_opsmutex );
+ ldap_pvt_thread_mutex_lock( &num_ops_mutex );
+ num_ops_initiated++;
+ ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
- pthread_mutex_lock( &ops_mutex );
- ops_initiated++;
- pthread_mutex_unlock( &ops_mutex );
+ if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
+ "connection_operation: conn %d SASL bind in progress (tag=%ld).\n",
+ conn->c_connid, (long)tag ));
+#else
+ Debug( LDAP_DEBUG_ANY, "connection_operation: "
+ "error: SASL bind in progress (tag=%ld).\n",
+ (long) tag, 0, 0 );
+#endif
+ send_ldap_result( conn, arg->co_op,
+ rc = LDAP_OPERATIONS_ERROR,
+ NULL, "SASL bind in progress", NULL, NULL );
+ goto operations_error;
+ }
- switch ( arg->co_op->o_tag ) {
+ switch ( tag ) {
case LDAP_REQ_BIND:
- do_bind( arg->co_conn, arg->co_op );
+ rc = do_bind( conn, arg->co_op );
break;
-#ifdef LDAP_COMPAT30
- case LDAP_REQ_UNBIND_30:
-#endif
case LDAP_REQ_UNBIND:
- do_unbind( arg->co_conn, arg->co_op );
+ rc = do_unbind( conn, arg->co_op );
break;
case LDAP_REQ_ADD:
- do_add( arg->co_conn, arg->co_op );
+ rc = do_add( conn, arg->co_op );
break;
-#ifdef LDAP_COMPAT30
- case LDAP_REQ_DELETE_30:
-#endif
case LDAP_REQ_DELETE:
- do_delete( arg->co_conn, arg->co_op );
+ rc = do_delete( conn, arg->co_op );
break;
case LDAP_REQ_MODRDN:
- do_modrdn( arg->co_conn, arg->co_op );
+ rc = do_modrdn( conn, arg->co_op );
break;
case LDAP_REQ_MODIFY:
- do_modify( arg->co_conn, arg->co_op );
+ rc = do_modify( conn, arg->co_op );
break;
case LDAP_REQ_COMPARE:
- do_compare( arg->co_conn, arg->co_op );
+ rc = do_compare( conn, arg->co_op );
break;
case LDAP_REQ_SEARCH:
- do_search( arg->co_conn, arg->co_op );
+ rc = do_search( conn, arg->co_op );
break;
-#ifdef LDAP_COMPAT30
- case LDAP_REQ_ABANDON_30:
-#endif
case LDAP_REQ_ABANDON:
- do_abandon( arg->co_conn, arg->co_op );
+ rc = do_abandon( conn, arg->co_op );
+ break;
+
+ case LDAP_REQ_EXTENDED:
+ rc = do_extended( conn, arg->co_op );
break;
default:
- Debug( LDAP_DEBUG_ANY, "unknown request 0x%lx\n",
- arg->co_op->o_tag, 0, 0 );
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
+ "connection_operation: conn %d unknown LDAP request 0x%lx\n",
+ conn->c_connid, tag ));
+#else
+ Debug( LDAP_DEBUG_ANY, "unknown LDAP request 0x%lx\n",
+ tag, 0, 0 );
+#endif
+ arg->co_op->o_tag = LBER_ERROR;
+ send_ldap_disconnect( conn, arg->co_op,
+ LDAP_PROTOCOL_ERROR, "unknown LDAP request" );
+ rc = -1;
break;
}
- pthread_mutex_lock( &arg->co_conn->c_opsmutex );
- arg->co_conn->c_opscompleted++;
- slap_op_delete( &arg->co_conn->c_ops, arg->co_op );
- pthread_mutex_unlock( &arg->co_conn->c_opsmutex );
+ if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
+operations_error:
+ ldap_pvt_thread_mutex_lock( &num_ops_mutex );
+ num_ops_completed++;
+ ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
+
+ ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+
+ conn->c_n_ops_executing--;
+ conn->c_n_ops_completed++;
+
+ LDAP_STAILQ_REMOVE( &conn->c_ops, arg->co_op, slap_op, o_next);
+ LDAP_STAILQ_NEXT(arg->co_op, o_next) = NULL;
+ slap_op_free( arg->co_op );
+ arg->co_op = NULL;
+ arg->co_conn = NULL;
free( (char *) arg );
+ arg = NULL;
+
+ switch( tag ) {
+ case LBER_ERROR:
+ case LDAP_REQ_UNBIND:
+ /* c_mutex is locked */
+ connection_closing( conn );
+ break;
- pthread_mutex_lock( &ops_mutex );
- ops_completed++;
- pthread_mutex_unlock( &ops_mutex );
+ case LDAP_REQ_BIND:
+ conn->c_sasl_bind_in_progress =
+ rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
- pthread_mutex_lock( &active_threads_mutex );
- active_threads--;
- if( active_threads < 1 ) {
- pthread_cond_signal(&active_threads_cond);
+ if( conn->c_conn_state == SLAP_C_BINDING) {
+ conn->c_conn_state = SLAP_C_ACTIVE;
+ }
}
- pthread_mutex_unlock( &active_threads_mutex );
+
+ connection_resched( conn );
+
+ ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+
return NULL;
}
-void
-connection_activity(
+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", LDAP_LEVEL_INFO,
+ "connection_read: sock %ld no connection\n",
+ (long)s ));
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "connection_read(%ld): no connection!\n",
+ (long) s, 0, 0 );
+#endif
+ slapd_remove(s, 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", LDAP_LEVEL_INFO,
+ "connection_read: conn %d connection closing, ignoring input\n",
+ c->c_connid));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_read(%d): closing, ignoring input for id=%ld\n",
+ s, c->c_connid, 0 );
+#endif
+ connection_return( c );
+ ldap_pvt_thread_mutex_unlock( &connections_mutex );
+ return 0;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
+ "connection_read: conn %d checking for input.\n", c->c_connid ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_read(%d): checking for input on id=%ld\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, NULL );
+ if ( rc < 0 ) {
+#if 0 /* required by next #if 0 */
+ struct timeval tv;
+ fd_set rfd;
+#endif
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
+ "connection_read: conn %d TLS accept error, error %d\n",
+ c->c_connid, rc ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_read(%d): TLS accept error "
+ "error=%d id=%ld, 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;
+ char *authid;
+
+ c->c_needs_tls_accept = 0;
+
+ /* we need to let SASL know */
+ ssl = (void *)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;
+ }
+
+ authid = (char *)ldap_pvt_tls_get_peer( ssl );
+ slap_sasl_external( c, c->c_tls_ssf, authid );
+ }
+ connection_return( c );
+ ldap_pvt_thread_mutex_unlock( &connections_mutex );
+ return 0;
+ }
+#endif
+
+#ifdef HAVE_CYRUS_SASL
+ if ( c->c_sasl_layers ) {
+ c->c_sasl_layers = 0;
+
+ rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_context );
+
+ if( rc != LDAP_SUCCESS ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
+ "connection_read: conn %d SASL install error %d, closing\n",
+ c->c_connid, rc ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_read(%d): SASL install error "
+ "error=%d id=%ld, 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
+
+#ifdef DATA_READY_LOOP
+ while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_DATA_READY, NULL ) )
+#elif CONNECTION_INPUT_LOOP
+ while(!rc)
+#endif
+ {
+ /* How do we do this without getting into a busy loop ? */
+ rc = connection_input( c );
+ }
+
+ if( rc < 0 ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
+ "connection_read: conn %d input error %d, closing.\n",
+ c->c_connid, rc ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_read(%d): input error=%d id=%ld, 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
)
{
-#ifndef HAVE_PTHREAD_DETACH
- pthread_attr_t attr;
-#endif
- int status;
- struct co_arg *arg;
- unsigned long tag, len;
- long msgid;
+ Operation *op;
+ ber_tag_t tag;
+ ber_len_t len;
+ ber_int_t msgid;
BerElement *ber;
- char *tmpdn;
+#ifdef LDAP_CONNECTIONLESS
+ Sockaddr peeraddr;
+ char *cdn = NULL;
+#endif
if ( conn->c_currentber == NULL && (conn->c_currentber = ber_alloc())
== NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
+ "connection_input: conn %d ber_alloc failed.\n", conn->c_connid ));
+#else
Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
- return;
+#endif
+ return -1;
}
errno = 0;
- if ( (tag = ber_get_next( &conn->c_sb, &len, conn->c_currentber ))
- != LDAP_TAG_MESSAGE ) {
+
+#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=%ld UDP request from %s (%s) accepted.\n",
+ conn->c_connid, peername,
+ conn->c_sock_name, 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", LDAP_LEVEL_ERR,
+ "connection_input: conn %d 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",
- conn->c_sb.sb_sd, errno, errno > -1 && errno < sys_nerr ?
- sys_errlist[errno] : "unknown" );
- Debug( LDAP_DEBUG_TRACE, "*** got %ld of %lu so far\n",
- (long)(conn->c_currentber->ber_rwptr - conn->c_currentber->ber_buf),
- conn->c_currentber->ber_len, 0 );
-
- if ( errno != EWOULDBLOCK && errno != EAGAIN ) {
+ "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;
- close_connection( conn, conn->c_connid, -1 );
+ return -2;
}
-
- return;
+ 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", LDAP_LEVEL_ERR,
+ "connection_input: conn %d ber_get_int returns 0x%lx.\n",
+ conn->c_connid, tag ));
+#else
Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0,
0 );
+#endif
ber_free( ber, 1 );
-
- close_connection( conn, conn->c_connid, -1 );
- return;
+ return -1;
}
if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
/* log, close and send error */
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
+ "connection_input: conn %d ber_peek_tag returns 0x%lx.\n",
+ conn->c_connid, tag ));
+#else
Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0,
0 );
+#endif
ber_free( ber, 1 );
- close_connection( conn, conn->c_connid, -1 );
- return;
+ 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", LDAP_LEVEL_ERR,
+ "connection_input: conn %d invalid req for UDP 0x%lx.\n",
+ conn->c_connid, tag ));
+#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 );
}
-#ifdef LDAP_COMPAT30
- if ( conn->c_version == 30 ) {
- (void) ber_skip_tag( ber, &len );
+ op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
+
+#ifdef LDAP_CONNECTIONLESS
+ op->o_peeraddr = peeraddr;
+ if (cdn) {
+ op->o_dn = cdn;
+ op->o_protocol = LDAP_VERSION2;
}
#endif
+ if ( conn->c_conn_state == SLAP_C_BINDING
+ || conn->c_conn_state == SLAP_C_CLOSING )
+ {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
+ "connection_input: conn %d deferring operation\n",
+ conn->c_connid ));
+#else
+ Debug( LDAP_DEBUG_ANY, "deferring operation\n", 0, 0, 0 );
+#endif
+ conn->c_n_ops_pending++;
+ LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
+
+ } else {
+ conn->c_n_ops_executing++;
+ connection_op_activate( conn, 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 0;
+}
+
+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", LDAP_LEVEL_DETAIL1,
+ "connection_resched: conn %d reaquiring locks.\n",
+ conn->c_connid ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_resched: reaquiring locks conn=%ld 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", LDAP_LEVEL_INFO,
+ "connection_resched: conn %d closed by other thread.\n",
+ conn->c_connid ));
+#else
+ Debug( LDAP_DEBUG_TRACE, "connection_resched: "
+ "closed by other thread conn=%ld sd=%d\n",
+ conn->c_connid, sd, 0 );
+#endif
+ } else {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
+ "connection_resched: conn %d attempting closing.\n",
+ conn->c_connid ));
+#else
+ Debug( LDAP_DEBUG_TRACE, "connection_resched: "
+ "attempting closing conn=%ld 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 ) {
+ /* other states need different handling */
+ return 0;
+ }
+
+ while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
+ 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( conn, op );
+
+ if ( conn->c_conn_state == SLAP_C_BINDING ) {
+ break;
+ }
+ }
+ return 0;
+}
+
+static int connection_op_activate( Connection *conn, Operation *op )
+{
+ struct co_arg *arg;
+ int status;
+ ber_tag_t tag = op->o_tag;
+
+ if(tag == LDAP_REQ_BIND) {
+ conn->c_conn_state = SLAP_C_BINDING;
+ }
arg = (struct co_arg *) ch_malloc( sizeof(struct co_arg) );
arg->co_conn = conn;
+ arg->co_op = op;
- pthread_mutex_lock( &conn->c_dnmutex );
- if ( conn->c_dn != NULL ) {
- tmpdn = ch_strdup( conn->c_dn );
- } else {
- tmpdn = NULL;
+ if (!arg->co_op->o_dn.bv_len) {
+ arg->co_op->o_authz = conn->c_authz;
+ arg->co_op->o_dn.bv_val = ch_strdup( conn->c_dn.bv_val ?
+ conn->c_dn.bv_val : "" );
+ arg->co_op->o_ndn.bv_val = ch_strdup( conn->c_ndn.bv_val ?
+ conn->c_ndn.bv_val : "" );
+ }
+ arg->co_op->o_authtype = conn->c_authtype;
+ arg->co_op->o_authmech = conn->c_authmech != NULL
+ ? ch_strdup( conn->c_authmech ) : NULL;
+
+ if (!arg->co_op->o_protocol) {
+ arg->co_op->o_protocol = conn->c_protocol
+ ? conn->c_protocol : LDAP_VERSION3;
}
- pthread_mutex_unlock( &conn->c_dnmutex );
+ arg->co_op->o_connid = conn->c_connid;
- pthread_mutex_lock( &conn->c_opsmutex );
- arg->co_op = slap_op_add( &conn->c_ops, ber, msgid, tag, tmpdn,
- conn->c_opsinitiated, conn->c_connid );
- pthread_mutex_unlock( &conn->c_opsmutex );
+ LDAP_STAILQ_INSERT_TAIL( &conn->c_ops, arg->co_op, o_next );
- if ( tmpdn != NULL ) {
- free( tmpdn );
+ status = ldap_pvt_thread_pool_submit( &connection_pool,
+ connection_operation, (void *) arg );
+
+ if ( status != 0 ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
+ "connection_op_activate: conn %d thread pool submit failed.\n",
+ conn->c_connid ));
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "ldap_pvt_thread_pool_submit failed (%d)\n", status, 0, 0 );
+#endif
+ /* should move op to pending list */
}
-#ifdef HAVE_PTHREAD_DETACH
- if ( status = pthread_create( &arg->co_op->o_tid, NULL,
- connection_operation, (void *) arg ) != 0 ) {
- Debug( LDAP_DEBUG_ANY, "pthread_create failed (%d)\n", status, 0, 0 );
- } else {
- pthread_mutex_lock( &active_threads_mutex );
- active_threads++;
- pthread_mutex_unlock( &active_threads_mutex );
+ 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", LDAP_LEVEL_ERR,
+ "connection_write: sock %ld no connection!\n",(long)s));
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "connection_write(%ld): no connection!\n",
+ (long) s, 0, 0 );
+#endif
+ slapd_remove(s, 0);
+ ldap_pvt_thread_mutex_unlock( &connections_mutex );
+ return -1;
}
-#if !defined(HAVE_PTHREADS_D4)
- pthread_detach( arg->co_op->o_tid );
+ c->c_n_write++;
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
+ "connection_write conn %d waking output.\n",
+ c->c_connid ));
#else
- pthread_detach( &arg->co_op->o_tid );
+ Debug( LDAP_DEBUG_TRACE,
+ "connection_write(%d): waking output for id=%ld\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;
+}
-#else /* !pthread detach */
- pthread_attr_init( &attr );
- pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_DETACHED );
-#if !defined(HAVE_PTHREADS_D4)
- /* POSIX_THREADS or compatible
- * This is a draft 10 or standard pthreads implementation
- */
- if ( status = pthread_create( &arg->co_op->o_tid, &attr,
- connection_operation, (void *) arg ) != 0 ) {
- Debug( LDAP_DEBUG_ANY, "pthread_create failed (%d)\n", status, 0, 0 );
- } else {
- pthread_mutex_lock( &active_threads_mutex );
- active_threads++;
- pthread_mutex_unlock( &active_threads_mutex );
+/*
+ * Create client side and server side connection structures, connected to
+ * one another, for the front end to use for searches on arbitrary back ends.
+ */
+
+int connection_internal_open( Connection **conn, LDAP **ldp, const char *id )
+{
+ int rc;
+ ber_socket_t fd[2] = {-1,-1};
+ Operation *op;
+
+ *conn=NULL;
+ *ldp=NULL;
+
+ rc = lutil_pair( fd );
+ if( rc == -1 ) {
+ return LDAP_OTHER;
}
-#else /* pthread draft4 */
- /*
- * This is a draft 4 or earlier pthreads implementation
- */
- if ( status = pthread_create( &arg->co_op->o_tid, attr,
- connection_operation, (void *) arg ) != 0 ) {
- Debug( LDAP_DEBUG_ANY, "pthread_create failed (%d)\n", status, 0, 0 );
- } else {
- pthread_mutex_lock( &active_threads_mutex );
- active_threads++;
- pthread_mutex_unlock( &active_threads_mutex );
+
+ rc = connection_init( fd[1], "INT", "localhost",
+ "localhost:0", "localhost:00", 0, 256, id );
+ if( rc < 0 ) {
+ tcp_close( fd[0] );
+ tcp_close( fd[1] );
+ return LDAP_OTHER;
}
-#endif /* pthread draft4 */
- pthread_attr_destroy( &attr );
-#endif
+ slapd_add_internal( fd[1] );
+
+ /* A search operation, number 0 */
+ op = slap_op_alloc( NULL, 0, LDAP_REQ_SEARCH, 0);
+ op->o_ndn.bv_val = ch_strdup( id );
+ op->o_ndn.bv_len = strlen( id );
+ op->o_protocol = LDAP_VERSION3;
+
+ (*conn) = connection_get( fd[1] );
+ LDAP_STAILQ_INSERT_HEAD( &(*conn)->c_ops, op, o_next);
+ (*conn)->c_conn_state = SLAP_C_ACTIVE;
+
+ /* Create the client side of the connection */
+ rc = ldap_open_internal_connection( ldp, &(fd[0]) );
+ if( rc != LDAP_SUCCESS ) {
+ tcp_close( fd[0] );
+ return LDAP_OTHER;
+ }
+
+ /* The connection_get() will have locked the connection's mutex */
+ ldap_pvt_thread_mutex_unlock( &((*conn)->c_mutex) );
+
+ return LDAP_SUCCESS;
+}
+
+
+void connection_internal_close( Connection *conn )
+{
+ Operation *op = LDAP_STAILQ_FIRST(&conn->c_ops);
+
+ LDAP_STAILQ_REMOVE_HEAD(&conn->c_ops, o_next);
+ LDAP_STAILQ_NEXT(op, o_next) = NULL;
+ slap_op_free( op );
+ connection_closing( conn );
+ connection_close( conn );
}