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-rw-r--r--libraries/libldap/result.c1401
1 files changed, 1401 insertions, 0 deletions
diff --git a/libraries/libldap/result.c b/libraries/libldap/result.c
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+++ b/libraries/libldap/result.c
@@ -0,0 +1,1401 @@
+/* result.c - wait for an ldap result */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 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.
+ *
+ * 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>.
+ */
+/* Portions Copyright (c) 1990 Regents of the University of Michigan.
+ * All rights reserved.
+ */
+/* This notice applies to changes, created by or for Novell, Inc.,
+ * to preexisting works for which notices appear elsewhere in this file.
+ *
+ * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
+ *
+ * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
+ * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
+ * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
+ * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
+ * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
+ * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
+ * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
+ * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
+ *---
+ * Modification to OpenLDAP source by Novell, Inc.
+ * April 2000 sfs Add code to process V3 referrals and search results
+ *---
+ * Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
+ * can be found in the file "build/LICENSE-2.0.1" in this distribution
+ * of OpenLDAP Software.
+ */
+
+/*
+ * LDAPv3 (RFC 4511)
+ * LDAPResult ::= SEQUENCE {
+ * resultCode ENUMERATED { ... },
+ * matchedDN LDAPDN,
+ * diagnosticMessage LDAPString,
+ * referral [3] Referral OPTIONAL
+ * }
+ * Referral ::= SEQUENCE OF LDAPURL (one or more)
+ * LDAPURL ::= LDAPString (limited to URL chars)
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/stdlib.h>
+
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/time.h>
+#include <ac/unistd.h>
+
+#include "ldap-int.h"
+#include "ldap_log.h"
+#include "lutil.h"
+
+static int ldap_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
+static int ldap_mark_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
+static int wait4msg LDAP_P(( LDAP *ld, ber_int_t msgid, int all, struct timeval *timeout,
+ LDAPMessage **result ));
+static ber_tag_t try_read1msg LDAP_P(( LDAP *ld, ber_int_t msgid,
+ int all, LDAPConn *lc, LDAPMessage **result ));
+static ber_tag_t build_result_ber LDAP_P(( LDAP *ld, BerElement **bp, LDAPRequest *lr ));
+static void merge_error_info LDAP_P(( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr ));
+static LDAPMessage * chkResponseList LDAP_P(( LDAP *ld, int msgid, int all));
+
+#define LDAP_MSG_X_KEEP_LOOKING (-2)
+
+
+/*
+ * ldap_result - wait for an ldap result response to a message from the
+ * ldap server. If msgid is LDAP_RES_ANY (-1), any message will be
+ * accepted. If msgid is LDAP_RES_UNSOLICITED (0), any unsolicited
+ * message is accepted. Otherwise ldap_result will wait for a response
+ * with msgid. If all is LDAP_MSG_ONE (0) the first message with id
+ * msgid will be accepted, otherwise, ldap_result will wait for all
+ * responses with id msgid and then return a pointer to the entire list
+ * of messages. In general, this is only useful for search responses,
+ * which can be of three message types (zero or more entries, zero or
+ * search references, followed by an ldap result). An extension to
+ * LDAPv3 allows partial extended responses to be returned in response
+ * to any request. The type of the first message received is returned.
+ * When waiting, any messages that have been abandoned/discarded are
+ * discarded.
+ *
+ * Example:
+ * ldap_result( s, msgid, all, timeout, result )
+ */
+int
+ldap_result(
+ LDAP *ld,
+ int msgid,
+ int all,
+ struct timeval *timeout,
+ LDAPMessage **result )
+{
+ int rc;
+
+ assert( ld != NULL );
+ assert( result != NULL );
+
+ Debug2( LDAP_DEBUG_TRACE, "ldap_result ld %p msgid %d\n", (void *)ld, msgid );
+
+ if (ld->ld_errno == LDAP_LOCAL_ERROR || ld->ld_errno == LDAP_SERVER_DOWN)
+ return -1;
+
+ LDAP_MUTEX_LOCK( &ld->ld_res_mutex );
+ rc = wait4msg( ld, msgid, all, timeout, result );
+ LDAP_MUTEX_UNLOCK( &ld->ld_res_mutex );
+
+ return rc;
+}
+
+/* protected by res_mutex */
+static LDAPMessage *
+chkResponseList(
+ LDAP *ld,
+ int msgid,
+ int all)
+{
+ LDAPMessage *lm, **lastlm, *nextlm;
+ int cnt = 0;
+
+ /*
+ * Look through the list of responses we have received on
+ * this association and see if the response we're interested in
+ * is there. If it is, return it. If not, call wait4msg() to
+ * wait until it arrives or timeout occurs.
+ */
+
+ LDAP_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
+
+ Debug3( LDAP_DEBUG_TRACE,
+ "ldap_chkResponseList ld %p msgid %d all %d\n",
+ (void *)ld, msgid, all );
+
+ lastlm = &ld->ld_responses;
+ for ( lm = ld->ld_responses; lm != NULL; lm = nextlm ) {
+ nextlm = lm->lm_next;
+ ++cnt;
+
+ if ( ldap_abandoned( ld, lm->lm_msgid ) ) {
+ Debug2( LDAP_DEBUG_ANY,
+ "response list msg abandoned, "
+ "msgid %d message type %s\n",
+ lm->lm_msgid, ldap_int_msgtype2str( lm->lm_msgtype ) );
+
+ switch ( lm->lm_msgtype ) {
+ case LDAP_RES_SEARCH_ENTRY:
+ case LDAP_RES_SEARCH_REFERENCE:
+ case LDAP_RES_INTERMEDIATE:
+ break;
+
+ default:
+ /* there's no need to keep the id
+ * in the abandoned list any longer */
+ ldap_mark_abandoned( ld, lm->lm_msgid );
+ break;
+ }
+
+ /* Remove this entry from list */
+ *lastlm = nextlm;
+
+ ldap_msgfree( lm );
+
+ continue;
+ }
+
+ if ( msgid == LDAP_RES_ANY || lm->lm_msgid == msgid ) {
+ LDAPMessage *tmp;
+
+ if ( all == LDAP_MSG_ONE ||
+ all == LDAP_MSG_RECEIVED ||
+ msgid == LDAP_RES_UNSOLICITED )
+ {
+ break;
+ }
+
+ tmp = lm->lm_chain_tail;
+ if ( tmp->lm_msgtype == LDAP_RES_SEARCH_ENTRY ||
+ tmp->lm_msgtype == LDAP_RES_SEARCH_REFERENCE ||
+ tmp->lm_msgtype == LDAP_RES_INTERMEDIATE )
+ {
+ tmp = NULL;
+ }
+
+ if ( tmp == NULL ) {
+ lm = NULL;
+ }
+
+ break;
+ }
+ lastlm = &lm->lm_next;
+ }
+
+ if ( lm != NULL ) {
+ /* Found an entry, remove it from the list */
+ if ( all == LDAP_MSG_ONE && lm->lm_chain != NULL ) {
+ *lastlm = lm->lm_chain;
+ lm->lm_chain->lm_next = lm->lm_next;
+ lm->lm_chain->lm_chain_tail = ( lm->lm_chain_tail != lm ) ? lm->lm_chain_tail : lm->lm_chain;
+ lm->lm_chain = NULL;
+ lm->lm_chain_tail = NULL;
+ } else {
+ *lastlm = lm->lm_next;
+ }
+ lm->lm_next = NULL;
+ }
+
+#ifdef LDAP_DEBUG
+ if ( lm == NULL) {
+ Debug1( LDAP_DEBUG_TRACE,
+ "ldap_chkResponseList returns ld %p NULL\n", (void *)ld );
+ } else {
+ Debug3( LDAP_DEBUG_TRACE,
+ "ldap_chkResponseList returns ld %p msgid %d, type 0x%02lx\n",
+ (void *)ld, lm->lm_msgid, (unsigned long)lm->lm_msgtype );
+ }
+#endif
+
+ return lm;
+}
+
+/* protected by res_mutex */
+static int
+wait4msg(
+ LDAP *ld,
+ ber_int_t msgid,
+ int all,
+ struct timeval *timeout,
+ LDAPMessage **result )
+{
+ int rc;
+ struct timeval tv = { 0 },
+ tv0 = { 0 },
+ start_time_tv = { 0 },
+ *tvp = NULL;
+ LDAPConn *lc;
+
+ assert( ld != NULL );
+ assert( result != NULL );
+
+ LDAP_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
+
+ if ( timeout == NULL && ld->ld_options.ldo_tm_api.tv_sec >= 0 ) {
+ tv = ld->ld_options.ldo_tm_api;
+ timeout = &tv;
+ }
+
+#ifdef LDAP_DEBUG
+ if ( timeout == NULL ) {
+ Debug2( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (infinite timeout)\n",
+ (void *)ld, msgid );
+ } else {
+ Debug3( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (timeout %ld usec)\n",
+ (void *)ld, msgid, (long)timeout->tv_sec * 1000000 + timeout->tv_usec );
+ }
+#endif /* LDAP_DEBUG */
+
+ if ( timeout != NULL && timeout->tv_sec != -1 ) {
+ tv0 = *timeout;
+ tv = *timeout;
+ tvp = &tv;
+#ifdef HAVE_GETTIMEOFDAY
+ gettimeofday( &start_time_tv, NULL );
+#else /* ! HAVE_GETTIMEOFDAY */
+ start_time_tv.tv_sec = time( NULL );
+ start_time_tv.tv_usec = 0;
+#endif /* ! HAVE_GETTIMEOFDAY */
+ }
+
+ rc = LDAP_MSG_X_KEEP_LOOKING;
+ while ( rc == LDAP_MSG_X_KEEP_LOOKING ) {
+#ifdef LDAP_DEBUG
+ if ( ldap_debug & LDAP_DEBUG_TRACE ) {
+ Debug3( LDAP_DEBUG_TRACE, "wait4msg continue ld %p msgid %d all %d\n",
+ (void *)ld, msgid, all );
+ ldap_dump_connection( ld, ld->ld_conns, 1 );
+ LDAP_MUTEX_LOCK( &ld->ld_req_mutex );
+ ldap_dump_requests_and_responses( ld );
+ LDAP_MUTEX_UNLOCK( &ld->ld_req_mutex );
+ }
+#endif /* LDAP_DEBUG */
+
+ if ( ( *result = chkResponseList( ld, msgid, all ) ) != NULL ) {
+ rc = (*result)->lm_msgtype;
+
+ } else {
+ int lc_ready = 0;
+
+ LDAP_MUTEX_LOCK( &ld->ld_conn_mutex );
+ for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
+ if ( ber_sockbuf_ctrl( lc->lconn_sb,
+ LBER_SB_OPT_DATA_READY, NULL ) )
+ {
+ lc_ready = 2; /* ready at ber level, not socket level */
+ break;
+ }
+ }
+
+ if ( !lc_ready ) {
+ int err;
+ rc = ldap_int_select( ld, tvp );
+ if ( rc == -1 ) {
+ err = sock_errno();
+#ifdef LDAP_DEBUG
+ Debug1( LDAP_DEBUG_TRACE,
+ "ldap_int_select returned -1: errno %d\n",
+ err );
+#endif
+ }
+
+ if ( rc == 0 || ( rc == -1 && (
+ !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
+ || err != EINTR ) ) )
+ {
+ ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
+ LDAP_TIMEOUT);
+ LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
+ return( rc );
+ }
+
+ if ( rc == -1 ) {
+ rc = LDAP_MSG_X_KEEP_LOOKING; /* select interrupted: loop */
+
+ } else {
+ lc_ready = 1;
+ }
+ }
+ if ( lc_ready ) {
+ LDAPConn *lnext;
+ int serviced = 0;
+ rc = LDAP_MSG_X_KEEP_LOOKING;
+ LDAP_MUTEX_LOCK( &ld->ld_req_mutex );
+ if ( ld->ld_requests != NULL ) {
+ TAvlnode *node = ldap_tavl_end( ld->ld_requests, TAVL_DIR_RIGHT );
+ LDAPRequest *lr;
+
+ assert( node != NULL );
+ lr = node->avl_data;
+ if ( lr->lr_status == LDAP_REQST_WRITING &&
+ ldap_is_write_ready( ld, lr->lr_conn->lconn_sb ) ) {
+ serviced = 1;
+ ldap_int_flush_request( ld, lr );
+ }
+ }
+ for ( lc = ld->ld_conns;
+ rc == LDAP_MSG_X_KEEP_LOOKING && lc != NULL;
+ lc = lnext )
+ {
+ if ( lc->lconn_status == LDAP_CONNST_CONNECTED &&
+ ldap_is_read_ready( ld, lc->lconn_sb ) )
+ {
+ serviced = 1;
+ /* Don't let it get freed out from under us */
+ ++lc->lconn_refcnt;
+ rc = try_read1msg( ld, msgid, all, lc, result );
+ lnext = lc->lconn_next;
+
+ /* Only take locks if we're really freeing */
+ if ( lc->lconn_refcnt <= 1 ) {
+ ldap_free_connection( ld, lc, 0, 1 );
+ } else {
+ --lc->lconn_refcnt;
+ }
+ } else {
+ lnext = lc->lconn_next;
+ }
+ }
+ LDAP_MUTEX_UNLOCK( &ld->ld_req_mutex );
+ /* Quit looping if no one handled any socket events */
+ if (!serviced && lc_ready == 1)
+ rc = -1;
+ }
+ LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
+ }
+
+ if ( rc == LDAP_MSG_X_KEEP_LOOKING && tvp != NULL ) {
+ struct timeval curr_time_tv = { 0 },
+ delta_time_tv = { 0 };
+
+#ifdef HAVE_GETTIMEOFDAY
+ gettimeofday( &curr_time_tv, NULL );
+#else /* ! HAVE_GETTIMEOFDAY */
+ curr_time_tv.tv_sec = time( NULL );
+ curr_time_tv.tv_usec = 0;
+#endif /* ! HAVE_GETTIMEOFDAY */
+
+ /* delta_time = tmp_time - start_time */
+ delta_time_tv.tv_sec = curr_time_tv.tv_sec - start_time_tv.tv_sec;
+ delta_time_tv.tv_usec = curr_time_tv.tv_usec - start_time_tv.tv_usec;
+ if ( delta_time_tv.tv_usec < 0 ) {
+ delta_time_tv.tv_sec--;
+ delta_time_tv.tv_usec += 1000000;
+ }
+
+ /* tv0 < delta_time ? */
+ if ( ( tv0.tv_sec < delta_time_tv.tv_sec ) ||
+ ( ( tv0.tv_sec == delta_time_tv.tv_sec ) && ( tv0.tv_usec < delta_time_tv.tv_usec ) ) )
+ {
+ rc = 0; /* timed out */
+ ld->ld_errno = LDAP_TIMEOUT;
+ break;
+ }
+
+ /* tv0 -= delta_time */
+ tv0.tv_sec -= delta_time_tv.tv_sec;
+ tv0.tv_usec -= delta_time_tv.tv_usec;
+ if ( tv0.tv_usec < 0 ) {
+ tv0.tv_sec--;
+ tv0.tv_usec += 1000000;
+ }
+
+ tv.tv_sec = tv0.tv_sec;
+ tv.tv_usec = tv0.tv_usec;
+
+ Debug3( LDAP_DEBUG_TRACE, "wait4msg ld %p %ld s %ld us to go\n",
+ (void *)ld, (long) tv.tv_sec, (long) tv.tv_usec );
+
+ start_time_tv.tv_sec = curr_time_tv.tv_sec;
+ start_time_tv.tv_usec = curr_time_tv.tv_usec;
+ }
+ }
+
+ return( rc );
+}
+
+
+/* protected by res_mutex, conn_mutex and req_mutex */
+static ber_tag_t
+try_read1msg(
+ LDAP *ld,
+ ber_int_t msgid,
+ int all,
+ LDAPConn *lc,
+ LDAPMessage **result )
+{
+ BerElement *ber;
+ LDAPMessage *newmsg, *l, *prev;
+ ber_int_t id;
+ ber_tag_t tag;
+ ber_len_t len;
+ int foundit = 0;
+ LDAPRequest *lr, *tmplr, dummy_lr = { 0 };
+ BerElement tmpber;
+ int rc, refer_cnt, hadref, simple_request, err;
+ ber_int_t lderr = -1;
+
+#ifdef LDAP_CONNECTIONLESS
+ LDAPMessage *tmp = NULL, *chain_head = NULL;
+ int moremsgs = 0, isv2 = 0;
+#endif
+
+ assert( ld != NULL );
+ assert( lc != NULL );
+
+ LDAP_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
+ LDAP_ASSERT_MUTEX_OWNER( &ld->ld_conn_mutex );
+ LDAP_ASSERT_MUTEX_OWNER( &ld->ld_req_mutex );
+
+ Debug3( LDAP_DEBUG_TRACE, "read1msg: ld %p msgid %d all %d\n",
+ (void *)ld, msgid, all );
+
+retry:
+ if ( lc->lconn_ber == NULL ) {
+ lc->lconn_ber = ldap_alloc_ber_with_options( ld );
+
+ if ( lc->lconn_ber == NULL ) {
+ return -1;
+ }
+ }
+
+ ber = lc->lconn_ber;
+ assert( LBER_VALID (ber) );
+
+ /* get the next message */
+ sock_errset(0);
+#ifdef LDAP_CONNECTIONLESS
+ if ( LDAP_IS_UDP(ld) ) {
+ struct sockaddr_storage from;
+ if ( ber_int_sb_read( lc->lconn_sb, &from, sizeof(struct sockaddr_storage) ) < 0 )
+ goto fail;
+ if ( ld->ld_options.ldo_version == LDAP_VERSION2 ) isv2 = 1;
+ }
+nextresp3:
+#endif
+ tag = ber_get_next( lc->lconn_sb, &len, ber );
+ switch ( tag ) {
+ case LDAP_TAG_MESSAGE:
+ /*
+ * We read a complete message.
+ * The connection should no longer need this ber.
+ */
+ lc->lconn_ber = NULL;
+ break;
+
+ default:
+ /*
+ * We read a BerElement that isn't LDAP or the stream has desync'd.
+ * In either case, anything we read from now on is probably garbage,
+ * just drop the connection.
+ */
+ ber_free( ber, 1 );
+ lc->lconn_ber = NULL;
+ /* FALLTHRU */
+
+ case LBER_DEFAULT:
+fail:
+ err = sock_errno();
+#ifdef LDAP_DEBUG
+ Debug1( LDAP_DEBUG_CONNS,
+ "ber_get_next failed, errno=%d.\n", err );
+#endif
+ if ( err == EWOULDBLOCK ) return LDAP_MSG_X_KEEP_LOOKING;
+ if ( err == EAGAIN ) return LDAP_MSG_X_KEEP_LOOKING;
+ ld->ld_errno = LDAP_SERVER_DOWN;
+ if ( !LDAP_BOOL_GET( &ld->ld_options, LDAP_BOOL_KEEPCONN )) {
+ --lc->lconn_refcnt;
+ }
+ lc->lconn_status = 0;
+ return -1;
+ }
+
+ /* message id */
+ if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
+ ber_free( ber, 1 );
+ ld->ld_errno = LDAP_DECODING_ERROR;
+ return( -1 );
+ }
+
+ /* id == 0 iff unsolicited notification message (RFC 4511) */
+
+ /* id < 0 is invalid, just toss it. FIXME: should we disconnect? */
+ if ( id < 0 ) {
+ goto retry_ber;
+ }
+
+ /* if it's been abandoned, toss it */
+ if ( id > 0 ) {
+ if ( ldap_abandoned( ld, id ) ) {
+ /* the message type */
+ tag = ber_peek_tag( ber, &len );
+ switch ( tag ) {
+ case LDAP_RES_SEARCH_ENTRY:
+ case LDAP_RES_SEARCH_REFERENCE:
+ case LDAP_RES_INTERMEDIATE:
+ case LBER_ERROR:
+ break;
+
+ default:
+ /* there's no need to keep the id
+ * in the abandoned list any longer */
+ ldap_mark_abandoned( ld, id );
+ break;
+ }
+
+ Debug3( LDAP_DEBUG_ANY,
+ "abandoned/discarded ld %p msgid %d message type %s\n",
+ (void *)ld, id, ldap_int_msgtype2str( tag ) );
+
+retry_ber:
+ ber_free( ber, 1 );
+ if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
+ goto retry;
+ }
+ return( LDAP_MSG_X_KEEP_LOOKING ); /* continue looking */
+ }
+
+ lr = ldap_find_request_by_msgid( ld, id );
+ if ( lr == NULL ) {
+ const char *msg = "unknown";
+
+ /* the message type */
+ tag = ber_peek_tag( ber, &len );
+ switch ( tag ) {
+ case LBER_ERROR:
+ break;
+
+ default:
+ msg = ldap_int_msgtype2str( tag );
+ break;
+ }
+
+ Debug3( LDAP_DEBUG_ANY,
+ "no request for response on ld %p msgid %d message type %s (tossing)\n",
+ (void *)ld, id, msg );
+
+ goto retry_ber;
+ }
+
+#ifdef LDAP_CONNECTIONLESS
+ if ( LDAP_IS_UDP(ld) && isv2 ) {
+ ber_scanf(ber, "x{");
+ }
+nextresp2:
+ ;
+#endif
+ }
+
+ /* the message type */
+ tag = ber_peek_tag( ber, &len );
+ if ( tag == LBER_ERROR ) {
+ ld->ld_errno = LDAP_DECODING_ERROR;
+ ber_free( ber, 1 );
+ return( -1 );
+ }
+
+ Debug3( LDAP_DEBUG_TRACE,
+ "read1msg: ld %p msgid %d message type %s\n",
+ (void *)ld, id, ldap_int_msgtype2str( tag ) );
+
+ if ( id == 0 ) {
+ /* unsolicited notification message (RFC 4511) */
+ if ( tag != LDAP_RES_EXTENDED ) {
+ /* toss it */
+ goto retry_ber;
+
+ /* strictly speaking, it's an error; from RFC 4511:
+
+4.4. Unsolicited Notification
+
+ An unsolicited notification is an LDAPMessage sent from the server to
+ the client that is not in response to any LDAPMessage received by the
+ server. It is used to signal an extraordinary condition in the
+ server or in the LDAP session between the client and the server. The
+ notification is of an advisory nature, and the server will not expect
+ any response to be returned from the client.
+
+ The unsolicited notification is structured as an LDAPMessage in which
+ the messageID is zero and protocolOp is set to the extendedResp
+ choice using the ExtendedResponse type (See Section 4.12). The
+ responseName field of the ExtendedResponse always contains an LDAPOID
+ that is unique for this notification.
+
+ * however, since unsolicited responses
+ * are of advisory nature, better
+ * toss it, right now
+ */
+
+#if 0
+ ld->ld_errno = LDAP_DECODING_ERROR;
+ ber_free( ber, 1 );
+ return( -1 );
+#endif
+ }
+
+ lr = &dummy_lr;
+ }
+
+ id = lr->lr_origid;
+ refer_cnt = 0;
+ hadref = simple_request = 0;
+ rc = LDAP_MSG_X_KEEP_LOOKING; /* default is to keep looking (no response found) */
+ lr->lr_res_msgtype = tag;
+
+ /*
+ * Check for V3 search reference
+ */
+ if ( tag == LDAP_RES_SEARCH_REFERENCE ) {
+ if ( ld->ld_version > LDAP_VERSION2 ) {
+ /* This is a V3 search reference */
+ if ( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
+ lr->lr_parent != NULL )
+ {
+ char **refs = NULL;
+ tmpber = *ber;
+
+ /* Get the referral list */
+ if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
+ rc = LDAP_DECODING_ERROR;
+
+ } else {
+ /* Note: refs array is freed by ldap_chase_v3referrals */
+ refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
+ 1, &lr->lr_res_error, &hadref );
+ if ( refer_cnt > 0 ) {
+ /* successfully chased reference */
+ /* If haven't got end search, set chasing referrals */
+ if ( lr->lr_status != LDAP_REQST_COMPLETED ) {
+ lr->lr_status = LDAP_REQST_CHASINGREFS;
+ Debug1( LDAP_DEBUG_TRACE,
+ "read1msg: search ref chased, "
+ "mark request chasing refs, "
+ "id = %d\n",
+ lr->lr_msgid );
+ }
+ }
+ }
+ }
+ }
+
+ } else if ( tag != LDAP_RES_SEARCH_ENTRY && tag != LDAP_RES_INTERMEDIATE ) {
+ /* All results that just return a status, i.e. don't return data
+ * go through the following code. This code also chases V2 referrals
+ * and checks if all referrals have been chased.
+ */
+ char *lr_res_error = NULL;
+
+ tmpber = *ber; /* struct copy */
+ if ( ber_scanf( &tmpber, "{eAA", &lderr,
+ &lr->lr_res_matched, &lr_res_error )
+ != LBER_ERROR )
+ {
+ if ( lr_res_error != NULL ) {
+ if ( lr->lr_res_error != NULL ) {
+ (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
+ LDAP_FREE( (char *)lr_res_error );
+
+ } else {
+ lr->lr_res_error = lr_res_error;
+ }
+ lr_res_error = NULL;
+ }
+
+ /* Do we need to check for referrals? */
+ if ( tag != LDAP_RES_BIND &&
+ ( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
+ lr->lr_parent != NULL ))
+ {
+ char **refs = NULL;
+ ber_len_t len;
+
+ /* Check if V3 referral */
+ if ( ber_peek_tag( &tmpber, &len ) == LDAP_TAG_REFERRAL ) {
+ if ( ld->ld_version > LDAP_VERSION2 ) {
+ /* Get the referral list */
+ if ( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
+ rc = LDAP_DECODING_ERROR;
+ lr->lr_status = LDAP_REQST_COMPLETED;
+ Debug2( LDAP_DEBUG_TRACE,
+ "read1msg: referral decode error, "
+ "mark request completed, ld %p msgid %d\n",
+ (void *)ld, lr->lr_msgid );
+
+ } else {
+ /* Chase the referral
+ * refs array is freed by ldap_chase_v3referrals
+ */
+ refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
+ 0, &lr->lr_res_error, &hadref );
+ lr->lr_status = LDAP_REQST_COMPLETED;
+ Debug3( LDAP_DEBUG_TRACE,
+ "read1msg: referral %s chased, "
+ "mark request completed, ld %p msgid %d\n",
+ refer_cnt > 0 ? "" : "not",
+ (void *)ld, lr->lr_msgid);
+ if ( refer_cnt < 0 ) {
+ refer_cnt = 0;
+ }
+ }
+ }
+ } else {
+ switch ( lderr ) {
+ case LDAP_SUCCESS:
+ case LDAP_COMPARE_TRUE:
+ case LDAP_COMPARE_FALSE:
+ break;
+
+ default:
+ if ( lr->lr_res_error == NULL ) {
+ break;
+ }
+
+ /* pedantic, should never happen */
+ if ( lr->lr_res_error[ 0 ] == '\0' ) {
+ LDAP_FREE( lr->lr_res_error );
+ lr->lr_res_error = NULL;
+ break;
+ }
+
+ /* V2 referrals are in error string */
+ refer_cnt = ldap_chase_referrals( ld, lr,
+ &lr->lr_res_error, -1, &hadref );
+ lr->lr_status = LDAP_REQST_COMPLETED;
+ Debug1( LDAP_DEBUG_TRACE,
+ "read1msg: V2 referral chased, "
+ "mark request completed, id = %d\n",
+ lr->lr_msgid );
+ break;
+ }
+ }
+ }
+
+ /* save errno, message, and matched string */
+ if ( !hadref || lr->lr_res_error == NULL ) {
+ lr->lr_res_errno =
+ lderr == LDAP_PARTIAL_RESULTS
+ ? LDAP_SUCCESS : lderr;
+
+ } else if ( ld->ld_errno != LDAP_SUCCESS ) {
+ lr->lr_res_errno = ld->ld_errno;
+
+ } else {
+ lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
+ }
+ }
+
+ /* in any case, don't leave any lr_res_error 'round */
+ if ( lr_res_error ) {
+ LDAP_FREE( lr_res_error );
+ }
+
+ Debug2( LDAP_DEBUG_TRACE,
+ "read1msg: ld %p %d new referrals\n",
+ (void *)ld, refer_cnt );
+
+ if ( refer_cnt != 0 ) { /* chasing referrals */
+ ber_free( ber, 1 );
+ ber = NULL;
+ if ( refer_cnt < 0 ) {
+ ldap_return_request( ld, lr, 0 );
+ return( -1 ); /* fatal error */
+ }
+ lr->lr_res_errno = LDAP_SUCCESS; /* successfully chased referral */
+ if ( lr->lr_res_matched ) {
+ LDAP_FREE( lr->lr_res_matched );
+ lr->lr_res_matched = NULL;
+ }
+
+ } else {
+ if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
+ /* request without any referrals */
+ simple_request = ( hadref ? 0 : 1 );
+
+ } else {
+ /* request with referrals or child request */
+ ber_free( ber, 1 );
+ ber = NULL;
+ }
+
+ lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
+ Debug2( LDAP_DEBUG_TRACE,
+ "read1msg: mark request completed, ld %p msgid %d\n",
+ (void *)ld, lr->lr_msgid );
+ tmplr = lr;
+ while ( lr->lr_parent != NULL ) {
+ merge_error_info( ld, lr->lr_parent, lr );
+
+ lr = lr->lr_parent;
+ if ( --lr->lr_outrefcnt > 0 ) {
+ break; /* not completely done yet */
+ }
+ }
+ /* ITS#6744: Original lr was refcounted when we retrieved it,
+ * must release it now that we're working with the parent
+ */
+ if ( tmplr->lr_parent ) {
+ ldap_return_request( ld, tmplr, 0 );
+ }
+
+ /* Check if all requests are finished, lr is now parent */
+ tmplr = lr;
+ if ( tmplr->lr_status == LDAP_REQST_COMPLETED ) {
+ for ( tmplr = lr->lr_child;
+ tmplr != NULL;
+ tmplr = tmplr->lr_refnext )
+ {
+ if ( tmplr->lr_status != LDAP_REQST_COMPLETED ) break;
+ }
+ }
+
+ /* This is the parent request if the request has referrals */
+ if ( lr->lr_outrefcnt <= 0 &&
+ lr->lr_parent == NULL &&
+ tmplr == NULL )
+ {
+ id = lr->lr_msgid;
+ tag = lr->lr_res_msgtype;
+ Debug2( LDAP_DEBUG_TRACE, "request done: ld %p msgid %d\n",
+ (void *)ld, id );
+ Debug3( LDAP_DEBUG_TRACE,
+ "res_errno: %d, res_error: <%s>, "
+ "res_matched: <%s>\n",
+ lr->lr_res_errno,
+ lr->lr_res_error ? lr->lr_res_error : "",
+ lr->lr_res_matched ? lr->lr_res_matched : "" );
+ if ( !simple_request ) {
+ ber_free( ber, 1 );
+ ber = NULL;
+ if ( build_result_ber( ld, &ber, lr )
+ == LBER_ERROR )
+ {
+ rc = -1; /* fatal error */
+ }
+ }
+
+ if ( lr != &dummy_lr ) {
+ ldap_return_request( ld, lr, 1 );
+ }
+ lr = NULL;
+ }
+
+ /*
+ * RFC 4511 unsolicited (id == 0) responses
+ * shouldn't necessarily end the connection
+ */
+ if ( lc != NULL && id != 0 &&
+ !LDAP_BOOL_GET( &ld->ld_options, LDAP_BOOL_KEEPCONN )) {
+ --lc->lconn_refcnt;
+ lc = NULL;
+ }
+ }
+ }
+
+ if ( lr != NULL ) {
+ if ( lr != &dummy_lr ) {
+ ldap_return_request( ld, lr, 0 );
+ }
+ lr = NULL;
+ }
+
+ if ( ber == NULL ) {
+ return( rc );
+ }
+
+ /* try to handle unsolicited responses as appropriate */
+ if ( id == 0 && msgid > LDAP_RES_UNSOLICITED ) {
+ int is_nod = 0;
+
+ tag = ber_peek_tag( &tmpber, &len );
+
+ /* we have a res oid */
+ if ( tag == LDAP_TAG_EXOP_RES_OID ) {
+ static struct berval bv_nod = BER_BVC( LDAP_NOTICE_OF_DISCONNECTION );
+ struct berval resoid = BER_BVNULL;
+
+ if ( ber_scanf( &tmpber, "m", &resoid ) == LBER_ERROR ) {
+ ld->ld_errno = LDAP_DECODING_ERROR;
+ ber_free( ber, 1 );
+ return -1;
+ }
+
+ assert( !BER_BVISEMPTY( &resoid ) );
+
+ is_nod = ber_bvcmp( &resoid, &bv_nod ) == 0;
+
+ tag = ber_peek_tag( &tmpber, &len );
+ }
+
+#if 0 /* don't need right now */
+ /* we have res data */
+ if ( tag == LDAP_TAG_EXOP_RES_VALUE ) {
+ struct berval resdata;
+
+ if ( ber_scanf( &tmpber, "m", &resdata ) == LBER_ERROR ) {
+ ld->ld_errno = LDAP_DECODING_ERROR;
+ ber_free( ber, 0 );
+ return ld->ld_errno;
+ }
+
+ /* use it... */
+ }
+#endif
+
+ /* handle RFC 4511 "Notice of Disconnection" locally */
+
+ if ( is_nod ) {
+ if ( tag == LDAP_TAG_EXOP_RES_VALUE ) {
+ ld->ld_errno = LDAP_DECODING_ERROR;
+ ber_free( ber, 1 );
+ return -1;
+ }
+
+ /* get rid of the connection... */
+ if ( lc != NULL &&
+ !LDAP_BOOL_GET( &ld->ld_options, LDAP_BOOL_KEEPCONN )) {
+ --lc->lconn_refcnt;
+ }
+
+ /* need to return -1, because otherwise
+ * a valid result is expected */
+ ld->ld_errno = lderr;
+ return -1;
+ }
+ }
+
+ /* make a new ldap message */
+ newmsg = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) );
+ if ( newmsg == NULL ) {
+ ld->ld_errno = LDAP_NO_MEMORY;
+ return( -1 );
+ }
+ newmsg->lm_msgid = (int)id;
+ newmsg->lm_msgtype = tag;
+ newmsg->lm_ber = ber;
+ newmsg->lm_chain_tail = newmsg;
+
+#ifdef LDAP_CONNECTIONLESS
+ /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
+ * the responses are all a sequence wrapped in one message. In
+ * LDAPv3 each response is in its own message. The datagram must
+ * end with a SearchResult. We can't just parse each response in
+ * separate calls to try_read1msg because the header info is only
+ * present at the beginning of the datagram, not at the beginning
+ * of each response. So parse all the responses at once and queue
+ * them up, then pull off the first response to return to the
+ * caller when all parsing is complete.
+ */
+ if ( LDAP_IS_UDP(ld) ) {
+ /* If not a result, look for more */
+ if ( tag != LDAP_RES_SEARCH_RESULT ) {
+ int ok = 0;
+ moremsgs = 1;
+ if (isv2) {
+ /* LDAPv2: dup the current ber, skip past the current
+ * response, and see if there are any more after it.
+ */
+ ber = ber_dup( ber );
+ ber_scanf( ber, "x" );
+ if ( ber_peek_tag( ber, &len ) != LBER_DEFAULT ) {
+ /* There's more - dup the ber buffer so they can all be
+ * individually freed by ldap_msgfree.
+ */
+ struct berval bv;
+ ber_get_option( ber, LBER_OPT_BER_REMAINING_BYTES, &len );
+ bv.bv_val = LDAP_MALLOC( len );
+ if ( bv.bv_val ) {
+ ok = 1;
+ ber_read( ber, bv.bv_val, len );
+ bv.bv_len = len;
+ ber_init2( ber, &bv, ld->ld_lberoptions );
+ }
+ }
+ } else {
+ /* LDAPv3: Just allocate a new ber. Since this is a buffered
+ * datagram, if the sockbuf is readable we still have data
+ * to parse.
+ */
+ ber = ldap_alloc_ber_with_options( ld );
+ if ( ber == NULL ) {
+ ld->ld_errno = LDAP_NO_MEMORY;
+ return -1;
+ }
+
+ if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) ok = 1;
+ }
+ /* set up response chain */
+ if ( tmp == NULL ) {
+ newmsg->lm_next = ld->ld_responses;
+ ld->ld_responses = newmsg;
+ chain_head = newmsg;
+ } else {
+ tmp->lm_chain = newmsg;
+ }
+ chain_head->lm_chain_tail = newmsg;
+ tmp = newmsg;
+ /* "ok" means there's more to parse */
+ if ( ok ) {
+ if ( isv2 ) {
+ goto nextresp2;
+
+ } else {
+ goto nextresp3;
+ }
+ } else {
+ /* got to end of datagram without a SearchResult. Free
+ * our dup'd ber, but leave any buffer alone. For v2 case,
+ * the previous response is still using this buffer. For v3,
+ * the new ber has no buffer to free yet.
+ */
+ ber_free( ber, 0 );
+ return -1;
+ }
+ } else if ( moremsgs ) {
+ /* got search result, and we had multiple responses in 1 datagram.
+ * stick the result onto the end of the chain, and then pull the
+ * first response off the head of the chain.
+ */
+ tmp->lm_chain = newmsg;
+ chain_head->lm_chain_tail = newmsg;
+ *result = chkResponseList( ld, msgid, all );
+ ld->ld_errno = LDAP_SUCCESS;
+ return( (*result)->lm_msgtype );
+ }
+ }
+#endif /* LDAP_CONNECTIONLESS */
+
+ /* is this the one we're looking for? */
+ if ( msgid == LDAP_RES_ANY || id == msgid ) {
+ if ( all == LDAP_MSG_ONE
+ || ( newmsg->lm_msgtype != LDAP_RES_SEARCH_RESULT
+ && newmsg->lm_msgtype != LDAP_RES_SEARCH_ENTRY
+ && newmsg->lm_msgtype != LDAP_RES_INTERMEDIATE
+ && newmsg->lm_msgtype != LDAP_RES_SEARCH_REFERENCE ) )
+ {
+ *result = newmsg;
+ ld->ld_errno = LDAP_SUCCESS;
+ return( tag );
+
+ } else if ( newmsg->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
+ foundit = 1; /* return the chain later */
+ }
+ }
+
+ /*
+ * if not, we must add it to the list of responses. if
+ * the msgid is already there, it must be part of an existing
+ * search response.
+ */
+
+ prev = NULL;
+ for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
+ if ( l->lm_msgid == newmsg->lm_msgid ) {
+ break;
+ }
+ prev = l;
+ }
+
+ /* not part of an existing search response */
+ if ( l == NULL ) {
+ if ( foundit ) {
+ *result = newmsg;
+ goto exit;
+ }
+
+ newmsg->lm_next = ld->ld_responses;
+ ld->ld_responses = newmsg;
+ goto exit;
+ }
+
+ Debug3( LDAP_DEBUG_TRACE, "adding response ld %p msgid %d type %ld:\n",
+ (void *)ld, newmsg->lm_msgid, (long) newmsg->lm_msgtype );
+
+ /* part of a search response - add to end of list of entries */
+ l->lm_chain_tail->lm_chain = newmsg;
+ l->lm_chain_tail = newmsg;
+
+ /* return the whole chain if that's what we were looking for */
+ if ( foundit ) {
+ if ( prev == NULL ) {
+ ld->ld_responses = l->lm_next;
+ } else {
+ prev->lm_next = l->lm_next;
+ }
+ *result = l;
+ }
+
+exit:
+ if ( foundit ) {
+ ld->ld_errno = LDAP_SUCCESS;
+ return( tag );
+ }
+ if ( lc && ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
+ goto retry;
+ }
+ return( LDAP_MSG_X_KEEP_LOOKING ); /* continue looking */
+}
+
+
+static ber_tag_t
+build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
+{
+ ber_len_t len;
+ ber_tag_t tag;
+ ber_int_t along;
+ BerElement *ber;
+
+ *bp = NULL;
+ ber = ldap_alloc_ber_with_options( ld );
+
+ if( ber == NULL ) {
+ ld->ld_errno = LDAP_NO_MEMORY;
+ return LBER_ERROR;
+ }
+
+ if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
+ lr->lr_res_msgtype, lr->lr_res_errno,
+ lr->lr_res_matched ? lr->lr_res_matched : "",
+ lr->lr_res_error ? lr->lr_res_error : "" ) == -1 )
+ {
+ ld->ld_errno = LDAP_ENCODING_ERROR;
+ ber_free( ber, 1 );
+ return( LBER_ERROR );
+ }
+
+ ber_reset( ber, 1 );
+
+ if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
+ ld->ld_errno = LDAP_DECODING_ERROR;
+ ber_free( ber, 1 );
+ return( LBER_ERROR );
+ }
+
+ if ( ber_get_enum( ber, &along ) == LBER_ERROR ) {
+ ld->ld_errno = LDAP_DECODING_ERROR;
+ ber_free( ber, 1 );
+ return( LBER_ERROR );
+ }
+
+ tag = ber_peek_tag( ber, &len );
+
+ if ( tag == LBER_ERROR ) {
+ ld->ld_errno = LDAP_DECODING_ERROR;
+ ber_free( ber, 1 );
+ return( LBER_ERROR );
+ }
+
+ *bp = ber;
+ return tag;
+}
+
+
+/*
+ * Merge error information in "lr" with "parentr" error code and string.
+ */
+static void
+merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
+{
+ if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
+ parentr->lr_res_errno = lr->lr_res_errno;
+ if ( lr->lr_res_error != NULL ) {
+ (void)ldap_append_referral( ld, &parentr->lr_res_error,
+ lr->lr_res_error );
+ }
+
+ } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
+ parentr->lr_res_errno == LDAP_SUCCESS )
+ {
+ parentr->lr_res_errno = lr->lr_res_errno;
+ if ( parentr->lr_res_error != NULL ) {
+ LDAP_FREE( parentr->lr_res_error );
+ }
+ parentr->lr_res_error = lr->lr_res_error;
+ lr->lr_res_error = NULL;
+ if ( LDAP_NAME_ERROR( lr->lr_res_errno ) ) {
+ if ( parentr->lr_res_matched != NULL ) {
+ LDAP_FREE( parentr->lr_res_matched );
+ }
+ parentr->lr_res_matched = lr->lr_res_matched;
+ lr->lr_res_matched = NULL;
+ }
+ }
+
+ Debug1( LDAP_DEBUG_TRACE, "merged parent (id %d) error info: ",
+ parentr->lr_msgid );
+ Debug3( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
+ parentr->lr_res_errno,
+ parentr->lr_res_error ? parentr->lr_res_error : "",
+ parentr->lr_res_matched ? parentr->lr_res_matched : "" );
+}
+
+
+
+int
+ldap_msgtype( LDAPMessage *lm )
+{
+ assert( lm != NULL );
+ return ( lm != NULL ) ? (int)lm->lm_msgtype : -1;
+}
+
+
+int
+ldap_msgid( LDAPMessage *lm )
+{
+ assert( lm != NULL );
+
+ return ( lm != NULL ) ? lm->lm_msgid : -1;
+}
+
+
+const char *
+ldap_int_msgtype2str( ber_tag_t tag )
+{
+ switch( tag ) {
+ case LDAP_RES_ADD: return "add";
+ case LDAP_RES_BIND: return "bind";
+ case LDAP_RES_COMPARE: return "compare";
+ case LDAP_RES_DELETE: return "delete";
+ case LDAP_RES_EXTENDED: return "extended-result";
+ case LDAP_RES_INTERMEDIATE: return "intermediate";
+ case LDAP_RES_MODIFY: return "modify";
+ case LDAP_RES_RENAME: return "rename";
+ case LDAP_RES_SEARCH_ENTRY: return "search-entry";
+ case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
+ case LDAP_RES_SEARCH_RESULT: return "search-result";
+ }
+ return "unknown";
+}
+
+int
+ldap_msgfree( LDAPMessage *lm )
+{
+ LDAPMessage *next;
+ int type = 0;
+
+ Debug0( LDAP_DEBUG_TRACE, "ldap_msgfree\n" );
+
+ for ( ; lm != NULL; lm = next ) {
+ next = lm->lm_chain;
+ type = lm->lm_msgtype;
+ ber_free( lm->lm_ber, 1 );
+ LDAP_FREE( (char *) lm );
+ }
+
+ return type;
+}
+
+/*
+ * ldap_msgdelete - delete a message. It returns:
+ * 0 if the entire message was deleted
+ * -1 if the message was not found, or only part of it was found
+ */
+int
+ldap_msgdelete( LDAP *ld, int msgid )
+{
+ LDAPMessage *lm, *prev;
+ int rc = 0;
+
+ assert( ld != NULL );
+
+ Debug2( LDAP_DEBUG_TRACE, "ldap_msgdelete ld=%p msgid=%d\n",
+ (void *)ld, msgid );
+
+ LDAP_MUTEX_LOCK( &ld->ld_res_mutex );
+ prev = NULL;
+ for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
+ if ( lm->lm_msgid == msgid ) {
+ break;
+ }
+ prev = lm;
+ }
+
+ if ( lm == NULL ) {
+ rc = -1;
+
+ } else {
+ if ( prev == NULL ) {
+ ld->ld_responses = lm->lm_next;
+ } else {
+ prev->lm_next = lm->lm_next;
+ }
+ }
+ LDAP_MUTEX_UNLOCK( &ld->ld_res_mutex );
+ if ( lm ) {
+ switch ( ldap_msgfree( lm ) ) {
+ case LDAP_RES_SEARCH_ENTRY:
+ case LDAP_RES_SEARCH_REFERENCE:
+ case LDAP_RES_INTERMEDIATE:
+ rc = -1;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return rc;
+}
+
+
+/*
+ * ldap_abandoned
+ *
+ * return the location of the message id in the array of abandoned
+ * message ids, or -1
+ */
+static int
+ldap_abandoned( LDAP *ld, ber_int_t msgid )
+{
+ int ret, idx;
+ assert( msgid >= 0 );
+
+ LDAP_MUTEX_LOCK( &ld->ld_abandon_mutex );
+ ret = ldap_int_bisect_find( ld->ld_abandoned, ld->ld_nabandoned, msgid, &idx );
+ LDAP_MUTEX_UNLOCK( &ld->ld_abandon_mutex );
+ return ret;
+}
+
+/*
+ * ldap_mark_abandoned
+ */
+static int
+ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
+{
+ int ret, idx;
+
+ assert( msgid >= 0 );
+ LDAP_MUTEX_LOCK( &ld->ld_abandon_mutex );
+ ret = ldap_int_bisect_find( ld->ld_abandoned, ld->ld_nabandoned, msgid, &idx );
+ if (ret <= 0) { /* error or already deleted by another thread */
+ LDAP_MUTEX_UNLOCK( &ld->ld_abandon_mutex );
+ return ret;
+ }
+ /* still in abandoned array, so delete */
+ ret = ldap_int_bisect_delete( &ld->ld_abandoned, &ld->ld_nabandoned,
+ msgid, idx );
+ LDAP_MUTEX_UNLOCK( &ld->ld_abandon_mutex );
+ return ret;
+}