/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 1998-2009 The OpenLDAP Foundation.
+ * Copyright 1998-2010 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
static Connection *connections = NULL;
static ldap_pvt_thread_mutex_t conn_nextid_mutex;
-static unsigned long conn_nextid = 0;
+static unsigned long conn_nextid = SLAPD_SYNC_SYNCCONN_OFFSET;
static const char conn_lost_str[] = "connection lost";
-/* 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
-#define SLAP_C_PENDING 0x03
-
-/* 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 */
-#define SLAP_C_CLIENT 0x05 /* outbound client conn */
-
const char *
connection_state2str( int state )
{
switch( state ) {
case SLAP_C_INVALID: return "!";
case SLAP_C_INACTIVE: return "|";
+ case SLAP_C_CLOSING: return "C";
case SLAP_C_ACTIVE: return "";
case SLAP_C_BINDING: return "B";
- case SLAP_C_CLOSING: return "C";
case SLAP_C_CLIENT: return "L";
}
*/
int connections_timeout_idle(time_t now)
{
- int i = 0;
+ int i = 0, writers = 0;
int connindex;
Connection* c;
+ time_t old;
+
+ old = slapd_get_writetime();
for( c = connection_first( &connindex );
c != NULL;
continue;
}
- if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
+ if( global_idletimeout &&
+ difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
/* close it */
connection_closing( c, "idletimeout" );
connection_close( c );
i++;
+ continue;
+ }
+ if ( c->c_writewaiter && global_writetimeout ) {
+ writers = 1;
+ if( difftime( c->c_activitytime+global_writetimeout, now) < 0 ) {
+ /* close it */
+ connection_closing( c, "writetimeout" );
+ connection_close( c );
+ i++;
+ }
}
}
connection_done( c );
+ if ( old && !writers )
+ slapd_clr_writetime( old );
return i;
}
}
}
-int connection_state_closing( Connection *c )
+int connection_valid( 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;
+ return c->c_struct_state == SLAP_C_USED &&
+ c->c_conn_state >= SLAP_C_ACTIVE &&
+ c->c_conn_state <= SLAP_C_CLIENT;
}
static void connection_abandon( Connection *c )
}
}
+static void
+connection_wake_writers( Connection *c )
+{
+ /* wake write blocked operations */
+ ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
+ if ( c->c_writers > 0 ) {
+ c->c_writers = -c->c_writers;
+ ldap_pvt_thread_cond_broadcast( &c->c_write1_cv );
+ ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
+ if ( c->c_writewaiter ) {
+ ldap_pvt_thread_mutex_lock( &c->c_write2_mutex );
+ ldap_pvt_thread_cond_signal( &c->c_write2_cv );
+ slapd_clr_write( c->c_sd, 1 );
+ ldap_pvt_thread_mutex_unlock( &c->c_write2_mutex );
+ }
+ ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
+ while ( c->c_writers ) {
+ ldap_pvt_thread_cond_wait( &c->c_write1_cv, &c->c_write1_mutex );
+ }
+ ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
+ } else {
+ ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
+ slapd_clr_write( c->c_sd, 1 );
+ }
+}
+
void connection_closing( Connection *c, const char *why )
{
assert( connections != NULL );
assert( c != NULL );
- assert( c->c_struct_state == SLAP_C_USED );
+
+ if ( c->c_struct_state != SLAP_C_USED ) return;
+
assert( c->c_conn_state != SLAP_C_INVALID );
/* c_mutex must be locked by caller */
connection_abandon( c );
/* wake write blocked operations */
- ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
- if ( c->c_writers > 0 ) {
- c->c_writers = -c->c_writers;
- ldap_pvt_thread_cond_broadcast( &c->c_write1_cv );
- ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
- if ( c->c_writewaiter ) {
- ldap_pvt_thread_mutex_lock( &c->c_write2_mutex );
- ldap_pvt_thread_cond_signal( &c->c_write2_cv );
- slapd_clr_write( c->c_sd, 1 );
- ldap_pvt_thread_mutex_unlock( &c->c_write2_mutex );
- }
- ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
- while ( c->c_writers ) {
- ldap_pvt_thread_cond_wait( &c->c_write1_cv, &c->c_write1_mutex );
- }
- ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
- } else {
- ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
- slapd_clr_write( c->c_sd, 1 );
- }
+ connection_wake_writers( c );
} else if( why == NULL && c->c_close_reason == conn_lost_str ) {
/* Client closed connection after doing Unbind. */
{
assert( connections != NULL );
assert( c != NULL );
- assert( c->c_struct_state == SLAP_C_USED );
+
+ if ( c->c_struct_state != SLAP_C_USED ) return;
+
assert( c->c_conn_state == SLAP_C_CLOSING );
/* NOTE: c_mutex should be locked by caller */
static void *
connection_operation( void *ctx, void *arg_v )
{
- int rc = LDAP_OTHER;
+ int rc = LDAP_OTHER, cancel;
Operation *op = arg_v;
SlapReply rs = {REP_RESULT};
ber_tag_t tag = op->o_tag;
INCR_OP_COMPLETED( opidx );
}
- if ( op->o_cancel == SLAP_CANCEL_REQ ) {
- if ( rc == SLAPD_ABANDON ) {
- op->o_cancel = SLAP_CANCEL_ACK;
- } else {
- op->o_cancel = LDAP_TOO_LATE;
+ ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+
+ if ( opidx == SLAP_OP_BIND && conn->c_conn_state == SLAP_C_BINDING )
+ conn->c_conn_state = SLAP_C_ACTIVE;
+
+ cancel = op->o_cancel;
+ if ( cancel != SLAP_CANCEL_NONE && cancel != SLAP_CANCEL_DONE ) {
+ if ( cancel == SLAP_CANCEL_REQ ) {
+ op->o_cancel = rc == SLAPD_ABANDON
+ ? SLAP_CANCEL_ACK : LDAP_TOO_LATE;
}
- }
- while ( op->o_cancel != SLAP_CANCEL_NONE &&
- op->o_cancel != SLAP_CANCEL_DONE )
- {
- ldap_pvt_thread_yield();
+ do {
+ /* Fake a cond_wait with thread_yield, then
+ * verify the result properly mutex-protected.
+ */
+ ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+ do {
+ ldap_pvt_thread_yield();
+ } while ( (cancel = op->o_cancel) != SLAP_CANCEL_NONE
+ && cancel != SLAP_CANCEL_DONE );
+ ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+ } while ( (cancel = op->o_cancel) != SLAP_CANCEL_NONE
+ && cancel != SLAP_CANCEL_DONE );
}
- ldap_pvt_thread_mutex_lock( &conn->c_mutex );
-
ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
LDAP_STAILQ_REMOVE( &conn->c_ops, op, Operation, o_next);
if ( rc )
return rc;
+ /* Don't let blocked writers block a pause request */
+ if ( connections[s].c_writewaiter &&
+ ldap_pvt_thread_pool_pausing( &connection_pool ))
+ connection_wake_writers( &connections[s] );
+
rc = ldap_pvt_thread_pool_submit( &connection_pool,
connection_read_thread, (void *)(long)s );
return rc;
}
-void
-connection_hangup( ber_socket_t s )
-{
- Connection *c;
-
- c = connection_get( s );
- if ( c ) {
- if ( c->c_conn_state == SLAP_C_CLIENT ) {
- connection_return( c );
- connection_read_activate( s );
- } else {
- connection_closing( c, "connection lost" );
- connection_close( c );
- connection_return( c );
- }
- }
-}
-
static int
connection_read( ber_socket_t s, conn_readinfo *cri )
{
c->c_connid, (int) s, c->c_tls_ssf, c->c_ssf, 0 );
slap_sasl_external( c, c->c_tls_ssf, &authid );
if ( authid.bv_val ) free( authid.bv_val );
+ } else if ( rc == 1 && ber_sockbuf_ctrl( c->c_sb,
+ LBER_SB_OPT_NEEDS_WRITE, NULL )) { /* need to retry */
+ slapd_set_write( s, 1 );
+ connection_return( c );
+ return 0;
}
/* if success and data is ready, fall thru to data input loop */
ctx = cri->ctx;
op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++, ctx );
+ Debug( LDAP_DEBUG_TRACE, "op tag 0x%lx, time %ld\n", tag,
+ (long) op->o_time, 0);
+
op->o_conn = conn;
/* clear state if the connection is being reused from inactive */
if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
static int connection_bind_cb( Operation *op, SlapReply *rs )
{
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
- if ( op->o_conn->c_conn_state == SLAP_C_BINDING )
- op->o_conn->c_conn_state = SLAP_C_ACTIVE;
op->o_conn->c_sasl_bind_in_progress =
( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS );
return -1;
}
+#ifdef HAVE_TLS
+ if ( c->c_is_tls && c->c_needs_tls_accept ) {
+ connection_return( c );
+ connection_read_activate( s );
+ return 0;
+ }
+#endif
+
c->c_n_write++;
Debug( LDAP_DEBUG_TRACE,
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_send_ldap_extended = slap_send_ldap_extended;
+ conn->c_send_ldap_intermediate = slap_send_ldap_intermediate;
conn->c_listener = (Listener *)&dummy_list;
conn->c_peer_domain = slap_empty_bv;
conn->c_peer_name = slap_empty_bv;
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