-/*
- * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
- */
-/* Portions
- * Copyright (c) 1990 Regents of the University of Michigan.
- * All rights reserved.
+/* abandon.c */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2008 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
*
- * abandon.c
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
*/
-
-/*
- * An abandon request looks like this:
- * AbandonRequest ::= MessageID
+/* Portions Copyright (c) 1990 Regents of the University of Michigan.
+ * All rights reserved.
*/
#include "portable.h"
#include "ldap-int.h"
-static int do_abandon LDAP_P((
+/*
+ * An abandon request looks like this:
+ * AbandonRequest ::= [APPLICATION 16] MessageID
+ * and has no response. (Source: RFC 4511)
+ */
+#include "lutil.h"
+
+static int
+do_abandon(
LDAP *ld,
- int origid,
- int msgid,
+ ber_int_t origid,
+ ber_int_t msgid,
LDAPControl **sctrls,
- LDAPControl **cctrls));
+ int sendabandon );
/*
* ldap_abandon_ext - perform an ldap extended abandon operation.
LDAPControl **sctrls,
LDAPControl **cctrls )
{
+ int rc;
+
Debug( LDAP_DEBUG_TRACE, "ldap_abandon_ext %d\n", msgid, 0, 0 );
- return do_abandon( ld, msgid, msgid, sctrls, cctrls );
+ /* check client controls */
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
+#endif
+
+ rc = ldap_int_client_controls( ld, cctrls );
+ if ( rc == LDAP_SUCCESS ) {
+ rc = do_abandon( ld, msgid, msgid, sctrls, 1 );
+ }
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
+#endif
+
+ return rc;
}
ldap_abandon( LDAP *ld, int msgid )
{
Debug( LDAP_DEBUG_TRACE, "ldap_abandon %d\n", msgid, 0, 0 );
- return do_abandon( ld, msgid, msgid, NULL, NULL ) == LDAP_SUCCESS
+ return ldap_abandon_ext( ld, msgid, NULL, NULL ) == LDAP_SUCCESS
? 0 : -1;
}
+int
+ldap_pvt_discard(
+ LDAP *ld,
+ ber_int_t msgid )
+{
+ int rc;
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
+#endif
+
+ rc = do_abandon( ld, msgid, msgid, NULL, 0 );
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
+#endif
+
+ return rc;
+}
+
static int
do_abandon(
LDAP *ld,
- int origid,
- int msgid,
+ ber_int_t origid,
+ ber_int_t msgid,
LDAPControl **sctrls,
- LDAPControl **cctrls)
+ int sendabandon )
{
BerElement *ber;
- int i, err, sendabandon;
- unsigned int *old_abandon;
+ int i, err;
Sockbuf *sb;
LDAPRequest *lr;
Debug( LDAP_DEBUG_TRACE, "do_abandon origid %d, msgid %d\n",
origid, msgid, 0 );
- sendabandon = 1;
-
/* find the request that we are abandoning */
- for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
- if ( lr->lr_msgid == msgid ) { /* this message */
+start_again:;
+ lr = ld->ld_requests;
+ while ( lr != NULL ) {
+ /* this message */
+ if ( lr->lr_msgid == msgid ) {
break;
}
- if ( lr->lr_origid == msgid ) {/* child: abandon it */
- (void) do_abandon( ld,
- msgid, lr->lr_msgid, sctrls, cctrls );
+
+ /* child: abandon it */
+ if ( lr->lr_origid == msgid && !lr->lr_abandoned ) {
+ (void)do_abandon( ld, lr->lr_origid, lr->lr_msgid,
+ sctrls, sendabandon );
+
+ /* restart, as lr may now be dangling... */
+ goto start_again;
}
+
+ lr = lr->lr_next;
}
if ( lr != NULL ) {
}
}
- if ( ldap_msgdelete( ld, msgid ) == 0 ) {
+ /* ldap_msgdelete locks the res_mutex. Give up the req_mutex
+ * while we're in there.
+ */
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
+#endif
+ err = ldap_msgdelete( ld, msgid );
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
+#endif
+ if ( err == 0 ) {
ld->ld_errno = LDAP_SUCCESS;
return LDAP_SUCCESS;
}
+ /* fetch again the request that we are abandoning */
+ if ( lr != NULL ) {
+ for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
+ /* this message */
+ if ( lr->lr_msgid == msgid ) {
+ break;
+ }
+ }
+ }
+
err = 0;
if ( sendabandon ) {
- /* create a message to send */
- if ( (ber = ldap_alloc_ber_with_options( ld )) == NULLBER ) {
+ if ( ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, NULL ) == -1 ) {
+ /* not connected */
+ err = -1;
+ ld->ld_errno = LDAP_SERVER_DOWN;
+
+ } else if ( ( ber = ldap_alloc_ber_with_options( ld ) ) == NULL ) {
+ /* BER element allocation failed */
err = -1;
ld->ld_errno = LDAP_NO_MEMORY;
} else {
+ /*
+ * We already have the mutex in LDAP_R_COMPILE, so
+ * don't try to get it again.
+ * LDAP_NEXT_MSGID(ld, i);
+ */
+
+ i = ++(ld)->ld_msgid;
#ifdef LDAP_CONNECTIONLESS
- if ( ld->ld_cldapnaddr > 0 ) {
- err = ber_printf( ber, "{isti", /* leave open '}' */
- ++ld->ld_msgid, ld->ld_cldapdn,
- LDAP_REQ_ABANDON, msgid );
+ if ( LDAP_IS_UDP(ld) ) {
+ struct sockaddr sa = {0};
+ /* dummy, filled with ldo_peer in request.c */
+ err = ber_write( ber, &sa, sizeof(sa), 0 );
+ }
+ if ( LDAP_IS_UDP(ld) && ld->ld_options.ldo_version ==
+ LDAP_VERSION2 )
+ {
+ char *dn = ld->ld_options.ldo_cldapdn;
+ if (!dn) dn = "";
+ err = ber_printf( ber, "{isti", /* '}' */
+ i, dn,
+ LDAP_REQ_ABANDON, msgid );
} else
-#endif /* LDAP_CONNECTIONLESS */
+#endif
{
- err = ber_printf( ber, "{iti", /* leave open '}' */
- ++ld->ld_msgid,
- LDAP_REQ_ABANDON, msgid );
+ /* create a message to send */
+ err = ber_printf( ber, "{iti", /* '}' */
+ i,
+ LDAP_REQ_ABANDON, msgid );
}
- if( err == -1 ) {
+ if ( err == -1 ) {
/* encoding error */
ld->ld_errno = LDAP_ENCODING_ERROR;
} else {
/* close '{' */
- err = ber_printf( ber, "}" );
+ err = ber_printf( ber, /*{*/ "N}" );
- if( err == -1 ) {
+ if ( err == -1 ) {
/* encoding error */
ld->ld_errno = LDAP_ENCODING_ERROR;
}
} else {
/* send the message */
if ( lr != NULL ) {
+ assert( lr->lr_conn != NULL );
sb = lr->lr_conn->lconn_sb;
} else {
- sb = &ld->ld_sb;
+ sb = ld->ld_sb;
}
- if ( ber_flush( sb, ber, 1 ) != 0 ) {
+ if ( ber_flush2( sb, ber, LBER_FLUSH_FREE_ALWAYS ) != 0 ) {
ld->ld_errno = LDAP_SERVER_DOWN;
err = -1;
} else {
}
if ( lr != NULL ) {
- if ( sendabandon ) {
+ if ( sendabandon || lr->lr_status == LDAP_REQST_WRITING ) {
ldap_free_connection( ld, lr->lr_conn, 0, 1 );
}
+
if ( origid == msgid ) {
ldap_free_request( ld, lr );
+
+ } else {
+ lr->lr_abandoned = 1;
}
}
+#ifdef LDAP_R_COMPILE
+ /* ld_abandoned is actually protected by the ld_res_mutex;
+ * give up the ld_req_mutex and get the other */
+ ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
+ ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
+#endif
+
+ /* use bisection */
i = 0;
- if ( ld->ld_abandoned != NULL ) {
- for ( ; ld->ld_abandoned[i] != -1; i++ )
- ; /* NULL */
+ if ( ld->ld_nabandoned == 0 ||
+ ldap_int_bisect_find( ld->ld_abandoned, ld->ld_nabandoned, msgid, &i ) == 0 )
+ {
+ ldap_int_bisect_insert( &ld->ld_abandoned, &ld->ld_nabandoned, msgid, i );
}
- old_abandon = ld->ld_abandoned;
+ if ( err != -1 ) {
+ ld->ld_errno = LDAP_SUCCESS;
+ }
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
+ ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
+#endif
+ return( ld->ld_errno );
+}
+
+/*
+ * ldap_int_bisect_find
+ *
+ * args:
+ * v: array of length n (in)
+ * n: length of array v (in)
+ * id: value to look for (in)
+ * idxp: pointer to location of value/insert point
+ *
+ * return:
+ * 0: not found
+ * 1: found
+ * -1: error
+ */
+int
+ldap_int_bisect_find( ber_int_t *v, ber_len_t n, ber_int_t id, int *idxp )
+{
+ int begin,
+ end,
+ rc = 0;
+
+ assert( n >= 0 );
+ assert( id >= 0 );
+
+ begin = 0;
+ end = n - 1;
- ld->ld_abandoned = (int *) LDAP_REALLOC( (char *)
- ld->ld_abandoned, (i + 2) * sizeof(int) );
-
- if ( ld->ld_abandoned == NULL ) {
- ld->ld_abandoned = old_abandon;
- ld->ld_errno = LDAP_NO_MEMORY;
- return( ld->ld_errno );
+ if ( n <= 0 || id < v[ begin ] ) {
+ *idxp = 0;
+
+ } else if ( id > v[ end ] ) {
+ *idxp = n;
+
+ } else {
+ int pos;
+ ber_int_t curid;
+
+ do {
+ pos = (begin + end)/2;
+ curid = v[ pos ];
+
+ if ( id < curid ) {
+ end = pos - 1;
+
+ } else if ( id > curid ) {
+ begin = ++pos;
+
+ } else {
+ /* already abandoned? */
+ rc = 1;
+ break;
+ }
+ } while ( end >= begin );
+
+ *idxp = pos;
+ }
+
+ return rc;
+}
+
+/*
+ * ldap_int_bisect_insert
+ *
+ * args:
+ * vp: pointer to array of length *np (in/out)
+ * np: pointer to length of array *vp (in/out)
+ * id: value to insert (in)
+ * idx: location of insert point (as computed by ldap_int_bisect_find())
+ *
+ * return:
+ * 0: inserted
+ * -1: error
+ */
+int
+ldap_int_bisect_insert( ber_int_t **vp, ber_len_t *np, int id, int idx )
+{
+ ber_int_t *v;
+ ber_len_t n;
+ int i;
+
+ assert( vp != NULL );
+ assert( np != NULL );
+ assert( *np >= 0 );
+ assert( idx >= 0 );
+ assert( idx <= *np );
+
+ n = *np;
+
+ v = ber_memrealloc( *vp, sizeof( ber_int_t ) * ( n + 1 ) );
+ if ( v == NULL ) {
+ return -1;
}
+ *vp = v;
- ld->ld_abandoned[i] = msgid;
- ld->ld_abandoned[i + 1] = -1;
+ for ( i = n; i > idx; i-- ) {
+ v[ i ] = v[ i - 1 ];
+ }
+ v[ idx ] = id;
+ ++(*np);
- if ( err != -1 ) {
- ld->ld_errno = LDAP_SUCCESS;
+ return 0;
+}
+
+/*
+ * ldap_int_bisect_delete
+ *
+ * args:
+ * vp: pointer to array of length *np (in/out)
+ * np: pointer to length of array *vp (in/out)
+ * id: value to delete (in)
+ * idx: location of value to delete (as computed by ldap_int_bisect_find())
+ *
+ * return:
+ * 0: deleted
+ */
+int
+ldap_int_bisect_delete( ber_int_t **vp, ber_len_t *np, int id, int idx )
+{
+ ber_int_t *v;
+ ber_len_t n;
+ int i;
+
+ assert( vp != NULL );
+ assert( np != NULL );
+ assert( *np >= 0 );
+ assert( idx >= 0 );
+ assert( idx < *np );
+
+ v = *vp;
+
+ assert( v[ idx ] == id );
+
+ --(*np);
+ n = *np;
+
+ for ( i = idx; i < n; i++ ) {
+ v[ i ] = v[ i + 1 ];
}
- return( ld->ld_errno );
+ return 0;
}
+
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