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-rw-r--r--servers/slapd/back-ldap/extended.c410
1 files changed, 410 insertions, 0 deletions
diff --git a/servers/slapd/back-ldap/extended.c b/servers/slapd/back-ldap/extended.c
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+++ b/servers/slapd/back-ldap/extended.c
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+/* extended.c - ldap backend extended routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2003-2022 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>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by the Howard Chu for inclusion
+ * in OpenLDAP Software and subsequently enhanced by Pierangelo
+ * Masarati.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <ac/string.h>
+
+#include "slap.h"
+#include "back-ldap.h"
+#include "lber_pvt.h"
+
+typedef int (ldap_back_exop_f)( Operation *op, SlapReply *rs, ldapconn_t **lc );
+
+static ldap_back_exop_f ldap_back_exop_passwd;
+static ldap_back_exop_f ldap_back_exop_generic;
+
+static struct exop {
+ struct berval oid;
+ ldap_back_exop_f *extended;
+} exop_table[] = {
+ { BER_BVC(LDAP_EXOP_MODIFY_PASSWD), ldap_back_exop_passwd },
+ { BER_BVNULL, NULL }
+};
+
+static int
+ldap_back_extended_one( Operation *op, SlapReply *rs, ldap_back_exop_f exop )
+{
+ ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
+
+ ldapconn_t *lc = NULL;
+ LDAPControl **ctrls = NULL, **oldctrls = NULL;
+ int rc;
+
+ /* FIXME: this needs to be called here, so it is
+ * called twice; maybe we could avoid the
+ * ldap_back_dobind() call inside each extended()
+ * call ... */
+ if ( !ldap_back_dobind( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
+ return -1;
+ }
+
+ ctrls = oldctrls = op->o_ctrls;
+ if ( ldap_back_controls_add( op, rs, lc, &ctrls ) )
+ {
+ op->o_ctrls = oldctrls;
+ send_ldap_extended( op, rs );
+ rs->sr_text = NULL;
+ /* otherwise frontend resends result */
+ rc = rs->sr_err = SLAPD_ABANDON;
+ goto done;
+ }
+
+ op->o_ctrls = ctrls;
+ rc = exop( op, rs, &lc );
+
+ op->o_ctrls = oldctrls;
+ (void)ldap_back_controls_free( op, rs, &ctrls );
+
+done:;
+ if ( lc != NULL ) {
+ ldap_back_release_conn( li, lc );
+ }
+
+ return rc;
+}
+
+int
+ldap_back_extended(
+ Operation *op,
+ SlapReply *rs )
+{
+ int i;
+
+ RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
+ rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia */
+
+ for ( i = 0; exop_table[i].extended != NULL; i++ ) {
+ if ( bvmatch( &exop_table[i].oid, &op->oq_extended.rs_reqoid ) )
+ {
+ return ldap_back_extended_one( op, rs, exop_table[i].extended );
+ }
+ }
+
+ /* if we get here, the exop is known; the best that we can do
+ * is pass it thru as is */
+ /* FIXME: maybe a list of OIDs to pass thru would be safer */
+ return ldap_back_extended_one( op, rs, ldap_back_exop_generic );
+}
+
+static int
+ldap_back_exop_passwd(
+ Operation *op,
+ SlapReply *rs,
+ ldapconn_t **lcp )
+{
+ ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
+
+ ldapconn_t *lc = *lcp;
+ req_pwdexop_s *qpw = &op->oq_pwdexop;
+ LDAPMessage *res;
+ ber_int_t msgid;
+ int rc, isproxy, freedn = 0;
+ int do_retry = 1;
+ char *text = NULL;
+ struct berval dn = op->o_req_dn,
+ ndn = op->o_req_ndn;
+
+ assert( lc != NULL );
+ assert( rs->sr_ctrls == NULL );
+
+ if ( BER_BVISNULL( &ndn ) && op->ore_reqdata != NULL ) {
+ /* NOTE: most of this code is mutated
+ * from slap_passwd_parse();
+ * But here we only need
+ * the first berval... */
+
+ ber_tag_t tag;
+ ber_len_t len = -1;
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+
+ struct berval tmpid = BER_BVNULL;
+
+ if ( op->ore_reqdata->bv_len == 0 ) {
+ return LDAP_PROTOCOL_ERROR;
+ }
+
+ /* ber_init2 uses reqdata directly, doesn't allocate new buffers */
+ ber_init2( ber, op->ore_reqdata, 0 );
+
+ tag = ber_scanf( ber, "{" /*}*/ );
+
+ if ( tag == LBER_ERROR ) {
+ return LDAP_PROTOCOL_ERROR;
+ }
+
+ tag = ber_peek_tag( ber, &len );
+ if ( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_ID ) {
+ tag = ber_get_stringbv( ber, &tmpid, LBER_BV_NOTERM );
+
+ if ( tag == LBER_ERROR ) {
+ return LDAP_PROTOCOL_ERROR;
+ }
+ }
+
+ if ( !BER_BVISEMPTY( &tmpid ) ) {
+ char idNull = tmpid.bv_val[tmpid.bv_len];
+ tmpid.bv_val[tmpid.bv_len] = '\0';
+ rs->sr_err = dnPrettyNormal( NULL, &tmpid, &dn,
+ &ndn, op->o_tmpmemctx );
+ tmpid.bv_val[tmpid.bv_len] = idNull;
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ /* should have been successfully parsed earlier! */
+ return rs->sr_err;
+ }
+ freedn = 1;
+
+ } else {
+ dn = op->o_dn;
+ ndn = op->o_ndn;
+ }
+ }
+
+ isproxy = ber_bvcmp( &ndn, &op->o_ndn );
+
+ Debug( LDAP_DEBUG_ARGS, "==> ldap_back_exop_passwd(\"%s\")%s\n",
+ dn.bv_val, isproxy ? " (proxy)" : "" );
+
+retry:
+ rc = ldap_passwd( lc->lc_ld, &dn,
+ qpw->rs_old.bv_val ? &qpw->rs_old : NULL,
+ qpw->rs_new.bv_val ? &qpw->rs_new : NULL,
+ op->o_ctrls, NULL, &msgid );
+
+ if ( rc == LDAP_SUCCESS ) {
+ /* TODO: set timeout? */
+ /* by now, make sure no timeout is used (ITS#6282) */
+ struct timeval tv = { -1, 0 };
+ if ( ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res ) == -1 ) {
+ ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER, &rc );
+ rs->sr_err = rc;
+
+ } else {
+ /* only touch when activity actually took place... */
+ if ( li->li_idle_timeout ) {
+ lc->lc_time = op->o_time;
+ }
+
+ /* sigh. parse twice, because parse_passwd
+ * doesn't give us the err / match / msg info.
+ */
+ rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
+ (char **)&rs->sr_matched,
+ &text,
+ NULL, &rs->sr_ctrls, 0 );
+
+ if ( rc == LDAP_SUCCESS ) {
+ if ( rs->sr_err == LDAP_SUCCESS ) {
+ struct berval newpw;
+
+ /* this never happens because
+ * the frontend is generating
+ * the new password, so when
+ * the passwd exop is proxied,
+ * it never delegates password
+ * generation to the remote server
+ */
+ rc = ldap_parse_passwd( lc->lc_ld, res,
+ &newpw );
+ if ( rc == LDAP_SUCCESS &&
+ !BER_BVISNULL( &newpw ) )
+ {
+ rs->sr_type = REP_EXTENDED;
+ rs->sr_rspdata = slap_passwd_return( &newpw );
+ free( newpw.bv_val );
+ }
+
+ } else {
+ rc = rs->sr_err;
+ }
+ }
+ ldap_msgfree( res );
+ }
+ }
+
+ if ( rc != LDAP_SUCCESS ) {
+ rs->sr_err = slap_map_api2result( rs );
+ if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
+ do_retry = 0;
+ if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
+ goto retry;
+ }
+ }
+
+ if ( LDAP_BACK_QUARANTINE( li ) ) {
+ ldap_back_quarantine( op, rs );
+ }
+
+ if ( text ) rs->sr_text = text;
+ send_ldap_extended( op, rs );
+ /* otherwise frontend resends result */
+ rc = rs->sr_err = SLAPD_ABANDON;
+
+ } else if ( LDAP_BACK_QUARANTINE( li ) ) {
+ ldap_back_quarantine( op, rs );
+ }
+
+ ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
+ ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_EXTENDED ], 1 );
+ ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
+
+ if ( freedn ) {
+ op->o_tmpfree( dn.bv_val, op->o_tmpmemctx );
+ op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
+ }
+
+ /* these have to be freed anyway... */
+ if ( rs->sr_matched ) {
+ free( (char *)rs->sr_matched );
+ rs->sr_matched = NULL;
+ }
+
+ if ( rs->sr_ctrls ) {
+ ldap_controls_free( rs->sr_ctrls );
+ rs->sr_ctrls = NULL;
+ }
+
+ if ( text ) {
+ free( text );
+ rs->sr_text = NULL;
+ }
+
+ /* in case, cleanup handler */
+ if ( lc == NULL ) {
+ *lcp = NULL;
+ }
+
+ return rc;
+}
+
+static int
+ldap_back_exop_generic(
+ Operation *op,
+ SlapReply *rs,
+ ldapconn_t **lcp )
+{
+ ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
+
+ ldapconn_t *lc = *lcp;
+ LDAPMessage *res;
+ ber_int_t msgid;
+ int rc;
+ int do_retry = 1;
+ char *text = NULL;
+
+ Debug( LDAP_DEBUG_ARGS, "==> ldap_back_exop_generic(%s, \"%s\")\n",
+ op->ore_reqoid.bv_val, op->o_req_dn.bv_val );
+ assert( lc != NULL );
+ assert( rs->sr_ctrls == NULL );
+
+retry:
+ rc = ldap_extended_operation( lc->lc_ld,
+ op->ore_reqoid.bv_val, op->ore_reqdata,
+ op->o_ctrls, NULL, &msgid );
+
+ if ( rc == LDAP_SUCCESS ) {
+ /* TODO: set timeout? */
+ /* by now, make sure no timeout is used (ITS#6282) */
+ struct timeval tv = { -1, 0 };
+ if ( ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res ) == -1 ) {
+ ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER, &rc );
+ rs->sr_err = rc;
+
+ } else {
+ /* only touch when activity actually took place... */
+ if ( li->li_idle_timeout ) {
+ lc->lc_time = op->o_time;
+ }
+
+ /* sigh. parse twice, because parse_passwd
+ * doesn't give us the err / match / msg info.
+ */
+ rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
+ (char **)&rs->sr_matched,
+ &text,
+ NULL, &rs->sr_ctrls, 0 );
+ if ( rc == LDAP_SUCCESS ) {
+ if ( rs->sr_err == LDAP_SUCCESS ) {
+ rc = ldap_parse_extended_result( lc->lc_ld, res,
+ (char **)&rs->sr_rspoid, &rs->sr_rspdata, 0 );
+ if ( rc == LDAP_SUCCESS ) {
+ rs->sr_type = REP_EXTENDED;
+ }
+
+ } else {
+ rc = rs->sr_err;
+ }
+ }
+ ldap_msgfree( res );
+ }
+ }
+
+ if ( rc != LDAP_SUCCESS ) {
+ rs->sr_err = slap_map_api2result( rs );
+ if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
+ do_retry = 0;
+ if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
+ goto retry;
+ }
+ }
+
+ if ( LDAP_BACK_QUARANTINE( li ) ) {
+ ldap_back_quarantine( op, rs );
+ }
+
+ if ( text ) rs->sr_text = text;
+ send_ldap_extended( op, rs );
+ /* otherwise frontend resends result */
+ rc = rs->sr_err = SLAPD_ABANDON;
+
+ } else if ( LDAP_BACK_QUARANTINE( li ) ) {
+ ldap_back_quarantine( op, rs );
+ }
+
+ ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
+ ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_EXTENDED ], 1 );
+ ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
+
+ /* these have to be freed anyway... */
+ if ( rs->sr_matched ) {
+ free( (char *)rs->sr_matched );
+ rs->sr_matched = NULL;
+ }
+
+ if ( rs->sr_ctrls ) {
+ ldap_controls_free( rs->sr_ctrls );
+ rs->sr_ctrls = NULL;
+ }
+
+ if ( text ) {
+ free( text );
+ rs->sr_text = NULL;
+ }
+
+ /* in case, cleanup handler */
+ if ( lc == NULL ) {
+ *lcp = NULL;
+ }
+
+ return rc;
+}
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