/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 1998-2006 The OpenLDAP Foundation.
+ * Copyright 1998-2007 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
ber_socket_t i;
for ( i = 0; i < dtblsize; i++ ) {
- if( connections[i].c_struct_state != SLAP_C_USED ) {
- continue;
- }
- /* give persistent clients a chance to cleanup */
- if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
- ldap_pvt_thread_pool_submit( &connection_pool,
- connections[i].c_clientfunc, connections[i].c_clientarg );
- continue;
+ if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
+ ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
+ if( connections[i].c_struct_state == SLAP_C_USED ) {
+
+ /* give persistent clients a chance to cleanup */
+ if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
+ ldap_pvt_thread_pool_submit( &connection_pool,
+ connections[i].c_clientfunc, connections[i].c_clientarg );
+ } else {
+ /* c_mutex is locked */
+ connection_closing( &connections[i], "slapd shutdown" );
+ connection_close( &connections[i] );
+ }
+ }
+ ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
}
-
- ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
-
- /* c_mutex is locked */
- connection_closing( &connections[i], "slapd shutdown" );
- connection_close( &connections[i] );
-
- ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
}
return 0;
if( c != NULL ) {
ber_socket_t sd;
- assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
-
ldap_pvt_thread_mutex_lock( &c->c_mutex );
+ assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
+
ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
+#ifdef HAVE_WINSOCK
+ /* Avoid race condition after releasing
+ * connections_mutex
+ */
+ if ( sd != s ) {
+ ldap_pvt_thread_mutex_unlock( &c->c_mutex );
+ return NULL;
+ }
+#endif
if( c->c_struct_state != SLAP_C_USED ) {
/* connection must have been closed due to resched */
ber_socket_t sd;
unsigned long connid;
const char *close_reason;
+ Sockbuf *sb;
assert( connections != NULL );
assert( c != NULL );
c->c_currentber = NULL;
}
- ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
- slapd_sd_lock();
- ber_sockbuf_free( c->c_sb );
- if ( sd != AC_SOCKET_INVALID ) {
- slapd_remove( sd, 1, 0, 1 );
- Statslog( LDAP_DEBUG_STATS, (close_reason
- ? "conn=%lu fd=%ld closed (%s)\n"
- : "conn=%lu fd=%ld closed\n"),
- connid, (long) sd, close_reason, 0, 0 );
- } else {
- slapd_sd_unlock();
+#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
- c->c_sb = ber_sockbuf_alloc( );
+ c->c_conn_state = SLAP_C_INVALID;
+ c->c_struct_state = SLAP_C_UNUSED;
+ c->c_close_reason = "?"; /* should never be needed */
+ sb = 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;
- c->c_close_reason = "?"; /* should never be needed */
+ ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
-#ifdef LDAP_SLAPI
- /* call destructors, then constructors; avoids unnecessary allocation */
- if ( slapi_plugins_used ) {
- slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
+ /* c must be fully reset by this point; when we call slapd_remove
+ * it may get immediately reused by a new connection.
+ */
+ if ( sd != AC_SOCKET_INVALID ) {
+ slapd_remove( sd, sb, 1, 0, 0 );
+
+ if ( close_reason == NULL ) {
+ Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed\n",
+ connid, (long) sd, 0, 0, 0 );
+ } else {
+ Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed (%s)\n",
+ connid, (long) sd, close_reason, 0, 0 );
+ }
}
-#endif
}
int connection_state_closing( Connection *c )
c->c_close_reason = why;
/* don't listen on this port anymore */
- slapd_clr_read( sd, 1 );
+ slapd_clr_read( sd, 0 );
/* abandon active operations */
connection_abandon( c );
/* wake write blocked operations */
- slapd_clr_write( sd, 1 );
if ( c->c_writewaiter ) {
ldap_pvt_thread_cond_signal( &c->c_write_cv );
+ /* ITS#4667 this may allow another thread to drop into
+ * connection_resched / connection_close before we
+ * finish, but that's OK.
+ */
+ slapd_clr_write( sd, 1 );
ldap_pvt_thread_mutex_unlock( &c->c_mutex );
- ldap_pvt_thread_yield();
+ ldap_pvt_thread_mutex_lock( &c->c_write_mutex );
ldap_pvt_thread_mutex_lock( &c->c_mutex );
+ ldap_pvt_thread_mutex_unlock( &c->c_write_mutex );
+ } else {
+ slapd_clr_write( sd, 1 );
}
} else if( why == NULL && c->c_close_reason == conn_lost_str ) {
}
}
-static void connection_close( Connection *c )
+static void
+connection_close( Connection *c )
{
- ber_socket_t sd;
+ ber_socket_t sd = AC_SOCKET_INVALID;
assert( connections != NULL );
assert( c != NULL );
+
+ /* ITS#4667 we may have gotten here twice */
+ if ( c->c_conn_state == SLAP_C_INVALID )
+ return;
+
assert( c->c_struct_state == SLAP_C_USED );
assert( c->c_conn_state == SLAP_C_CLOSING );
- /* note: c_mutex should be locked by caller */
+ /* NOTE: 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) ) {
+ /* NOTE: don't get the file descriptor if not needed */
+ if ( LogTest( LDAP_DEBUG_TRACE ) ) {
+ ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
+ }
+
+ if ( !LDAP_STAILQ_EMPTY(&c->c_ops) ||
+ !LDAP_STAILQ_EMPTY(&c->c_pending_ops) )
+ {
Debug( LDAP_DEBUG_TRACE,
"connection_close: deferring conn=%lu sd=%d\n",
c->c_connid, sd, 0 );
Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
c->c_connid, sd, 0 );
+
connection_destroy( c );
}
ldap_pvt_thread_mutex_lock( &connections_mutex );
for(; *index < dtblsize; (*index)++) {
+ int c_struct;
if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
assert( connections[*index].c_conn_state == SLAP_C_INVALID );
+#ifdef HAVE_WINSOCK
break;
+#else
+ continue;
+#endif
}
if( connections[*index].c_struct_state == SLAP_C_USED ) {
assert( connections[*index].c_conn_state != SLAP_C_INVALID );
c = &connections[(*index)++];
+ if ( ldap_pvt_thread_mutex_trylock( &c->c_mutex )) {
+ /* avoid deadlock */
+ ldap_pvt_thread_mutex_unlock( &connections_mutex );
+ ldap_pvt_thread_mutex_lock( &c->c_mutex );
+ ldap_pvt_thread_mutex_lock( &connections_mutex );
+ if ( c->c_struct_state != SLAP_C_USED ) {
+ ldap_pvt_thread_mutex_unlock( &c->c_mutex );
+ c = NULL;
+ continue;
+ }
+ }
break;
}
- assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
+ c_struct = connections[*index].c_struct_state;
+ if ( c_struct == SLAP_C_PENDING )
+ continue;
+ assert( c_struct == SLAP_C_UNUSED );
assert( connections[*index].c_conn_state == SLAP_C_INVALID );
}
- if( c != NULL ) ldap_pvt_thread_mutex_lock( &c->c_mutex );
ldap_pvt_thread_mutex_unlock( &connections_mutex );
return c;
}
/*
* NOTE: keep in sync with enum in slapd.h
*/
-static int (*opfun[])( Operation *op, SlapReply *rs ) = {
+static BI_op_func *opfun[] = {
do_bind,
do_unbind,
do_add,
Operation *op = arg_v;
SlapReply rs = {REP_RESULT};
ber_tag_t tag = op->o_tag;
- int opidx = -1;
+ slap_op_t opidx = SLAP_OP_LAST;
Connection *conn = op->o_conn;
void *memctx = NULL;
void *memctx_null = NULL;
}
}
- switch ( tag ) {
- case LDAP_REQ_BIND:
- opidx = SLAP_OP_BIND;
- break;
-
- case LDAP_REQ_UNBIND:
- opidx = SLAP_OP_UNBIND;
- break;
-
- case LDAP_REQ_ADD:
- opidx = SLAP_OP_ADD;
- break;
-
- case LDAP_REQ_DELETE:
- opidx = SLAP_OP_DELETE;
- break;
-
- case LDAP_REQ_MODRDN:
- opidx = SLAP_OP_MODRDN;
- break;
-
- case LDAP_REQ_MODIFY:
- opidx = SLAP_OP_MODIFY;
- break;
-
- case LDAP_REQ_COMPARE:
- opidx = SLAP_OP_COMPARE;
- break;
-
- case LDAP_REQ_SEARCH:
- opidx = SLAP_OP_SEARCH;
- break;
-
- case LDAP_REQ_ABANDON:
- opidx = SLAP_OP_ABANDON;
- break;
-
- case LDAP_REQ_EXTENDED:
- opidx = SLAP_OP_EXTENDED;
- break;
-
- default:
- /* not reachable */
- assert( 0 );
- }
-
- assert( opidx > -1 );
+ opidx = slap_req2op( tag );
+ assert( opidx != SLAP_OP_LAST );
INCR_OP_INITIATED( opidx );
rc = (*(opfun[opidx]))( op, &rs );
if ( rc == SLAPD_DISCONNECT ) {
tag = LBER_ERROR;
- } else if ( opidx > -1 ) {
+ } else if ( opidx != SLAP_OP_LAST ) {
/* increment completed operations count
* only if operation was initiated
* and rc != SLAPD_DISCONNECT */
op->o_cancel = LDAP_TOO_LATE;
}
}
+
while ( op->o_cancel != SLAP_CANCEL_NONE &&
op->o_cancel != SLAP_CANCEL_DONE )
{
ber_socket_t s )
{
Connection *c;
+ Sockbuf *sb;
/* get (locked) connection */
c = connection_get( s );
c->c_conn_state = SLAP_C_INVALID;
c->c_struct_state = SLAP_C_UNUSED;
c->c_close_reason = "?"; /* should never be needed */
- slapd_sd_lock();
- ber_sockbuf_free( c->c_sb );
- slapd_remove( s, 0, 1, 1 );
+ sb = 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 );
}
+ slapd_remove( s, sb, 0, 1, 0 );
connection_return( c );
}
Debug( LDAP_DEBUG_TRACE,
"connection_read(%d): closing, ignoring input for id=%lu\n",
s, c->c_connid, 0 );
-
-#ifdef SLAP_LIGHTWEIGHT_DISPATCHER
- slapd_set_read( s, 1 );
-#endif
connection_return( c );
return 0;
}
c->c_needs_tls_accept = 0;
/* c_mutex is locked */
connection_closing( c, "TLS negotiation failure" );
-
-#if 0
- {
- struct timeval tv;
- fd_set rfd;
- /* 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 );
connection_return( c );
return 0;
}
/* 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 ) )
+ if( !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
{
#ifdef SLAP_LIGHTWEIGHT_DISPATCHER
slapd_set_read( s, 1 );
#endif
if( rc < 0 ) {
- Debug( LDAP_DEBUG_TRACE,
+ Debug( LDAP_DEBUG_CONNS,
"connection_read(%d): input error=%d id=%lu, closing.\n",
s, rc, c->c_connid );
return -1;
}
- errno = 0;
+ sock_errset(0);
#ifdef LDAP_CONNECTIONLESS
if ( conn->c_is_udp ) {
tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
if ( tag != LDAP_TAG_MESSAGE ) {
- int err = errno;
+ int err = sock_errno();
ber_socket_t sd;
ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
- Debug( LDAP_DEBUG_TRACE,
- "ber_get_next on fd %d failed errno=%d (%s)\n",
- sd, err, sock_errstr(err) );
if ( err != EWOULDBLOCK && err != EAGAIN ) {
/* log, close and send error */
+ Debug( LDAP_DEBUG_TRACE,
+ "ber_get_next on fd %d failed errno=%d (%s)\n",
+ sd, err, sock_errstr(err) );
ber_free( conn->c_currentber, 1 );
conn->c_currentber = NULL;
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 );
- if( conn->c_conn_state != SLAP_C_CLOSING ) {
- Debug( LDAP_DEBUG_TRACE, "connection_resched: "
- "closed by other thread conn=%lu sd=%d\n",
- conn->c_connid, sd, 0 );
- } else {
- Debug( LDAP_DEBUG_TRACE, "connection_resched: "
- "attempting closing conn=%lu sd=%d\n",
- conn->c_connid, sd, 0 );
- connection_close( conn );
- }
-
+ Debug( LDAP_DEBUG_TRACE, "connection_resched: "
+ "attempting closing conn=%lu sd=%d\n",
+ conn->c_connid, sd, 0 );
+ connection_close( conn );
return 0;
}
{
op->o_conn->c_sasl_bindop = NULL;
+ ch_free( op->o_callback );
+ op->o_callback = NULL;
+
return SLAP_CB_CONTINUE;
}
static int connection_bind_cb( Operation *op, SlapReply *rs )
{
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
- op->o_conn->c_conn_state = SLAP_C_ACTIVE;
+ 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 0;
}
+#ifdef LDAP_SLAPI
+typedef struct conn_fake_extblock {
+ void *eb_conn;
+ void *eb_op;
+} conn_fake_extblock;
+
+static void
+connection_fake_destroy(
+ void *key,
+ void *data )
+{
+ Connection conn = {0};
+ Operation op = {0};
+ Opheader ohdr = {0};
+
+ conn_fake_extblock *eb = data;
+
+ op.o_hdr = &ohdr;
+ op.o_hdr->oh_extensions = eb->eb_op;
+ conn.c_extensions = eb->eb_conn;
+ op.o_conn = &conn;
+ conn.c_connid = -1;
+ op.o_connid = -1;
+
+ ber_memfree_x( eb, NULL );
+ slapi_int_free_object_extensions( SLAPI_X_EXT_OPERATION, &op );
+ slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION, &conn );
+}
+#endif
+
void
connection_fake_init(
Connection *conn,
connection_init_log_prefix( op );
#ifdef LDAP_SLAPI
- slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, conn );
- slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
+ if ( slapi_plugins_used ) {
+ conn_fake_extblock *eb = NULL;
+
+ /* Use thread keys to make sure these eventually get cleaned up */
+ if ( ldap_pvt_thread_pool_getkey( ctx, connection_fake_init, &eb,
+ NULL )) {
+ eb = ch_malloc( sizeof( *eb ));
+ slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, conn );
+ slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
+ eb->eb_conn = conn->c_extensions;
+ eb->eb_op = op->o_hdr->oh_extensions;
+ ldap_pvt_thread_pool_setkey( ctx, connection_fake_init, eb,
+ connection_fake_destroy );
+ } else {
+ conn->c_extensions = eb->eb_conn;
+ op->o_hdr->oh_extensions = eb->eb_op;
+ }
+ }
#endif /* LDAP_SLAPI */
slap_op_time( &op->o_time, &op->o_tincr );
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