Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 373 insertions, 0 deletions

diff --git a/servers/slapd/back-wt/add.c b/servers/slapd/back-wt/add.c
new file mode 100644
index 0000000..04c08a1
--- /dev/null
+++ b/servers/slapd/back-wt/add.c
@@ -0,0 +1,373 @@
+/* OpenLDAP WiredTiger backend */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2002-2022 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 developed by HAMANO Tsukasa <hamano@osstech.co.jp>
+ * based on back-bdb for inclusion in OpenLDAP Software.
+ * WiredTiger is a product of MongoDB Inc.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include "back-wt.h"
+#include "slap-config.h"
+
+int
+wt_add( Operation *op, SlapReply *rs )
+{
+    struct wt_info *wi = (struct wt_info *) op->o_bd->be_private;
+	struct berval   pdn;
+	char textbuf[SLAP_TEXT_BUFLEN];
+	size_t textlen = sizeof textbuf;
+	AttributeDescription *children = slap_schema.si_ad_children;
+	AttributeDescription *entry = slap_schema.si_ad_entry;
+	ID eid = NOID;
+	LDAPControl **postread_ctrl = NULL;
+	LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
+	int num_ctrls = 0;
+	wt_ctx *wc;
+	Entry *e = NULL;
+	Entry *p = NULL;
+	ID pid = NOID;
+	int rc;
+
+    Debug( LDAP_DEBUG_ARGS, "==> wt_add: %s\n", op->ora_e->e_name.bv_val );
+
+	ctrls[num_ctrls] = 0;
+
+	/* check entry's schema */
+	rs->sr_err = entry_schema_check(
+		op, op->ora_e, NULL,
+		get_relax(op), 1, NULL, &rs->sr_text, textbuf, textlen );
+    if ( rs->sr_err != LDAP_SUCCESS ) {
+        Debug( LDAP_DEBUG_TRACE,
+			   "wt_add: entry failed schema check: %s (%d)\n",
+			   rs->sr_text, rs->sr_err );
+        goto return_results;
+    }
+
+    /* add opattrs to shadow as well, only missing attrs will actually
+     * be added; helps compatibility with older OL versions */
+    rs->sr_err = slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
+    if ( rs->sr_err != LDAP_SUCCESS ) {
+        Debug( LDAP_DEBUG_TRACE,
+			   "wt_add: entry failed op attrs add: %s (%d)\n",
+			   rs->sr_text, rs->sr_err );
+        goto return_results;
+    }
+
+    if ( get_assert( op ) &&
+		 ( test_filter( op, op->ora_e, get_assertion( op ))
+		   != LDAP_COMPARE_TRUE ))
+    {
+        rs->sr_err = LDAP_ASSERTION_FAILED;
+        goto return_results;
+    }
+
+	/* Not used
+	 * subentry = is_entry_subentry( op->ora_e );
+	 */
+
+    /*
+     * Get the parent dn and see if the corresponding entry exists.
+     */
+    if ( be_issuffix( op->o_bd, &op->ora_e->e_nname ) ) {
+        pdn = slap_empty_bv;
+    } else {
+        dnParent( &op->ora_e->e_nname, &pdn );
+    }
+
+	wc = wt_ctx_get(op, wi);
+	if( !wc ){
+        Debug( LDAP_DEBUG_ANY, "wt_add: wt_ctx_get failed\n" );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+        send_ldap_result( op, rs );
+        return rs->sr_err;
+	}
+
+	rc = wt_dn2entry(op->o_bd, wc, &op->o_req_ndn, &e);
+	switch( rc ) {
+	case 0:
+		rs->sr_err = LDAP_ALREADY_EXISTS;
+		goto return_results;
+		break;
+	case WT_NOTFOUND:
+		break;
+	default:
+		/* TODO: retry handling */
+        Debug( LDAP_DEBUG_ANY,
+			   "wt_add: error at wt_dn2entry() rc=%d\n", rc );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+
+    /* get parent entry */
+	rc = wt_dn2pentry(op->o_bd, wc, &op->o_req_ndn, &p);
+	switch( rc ){
+	case 0:
+	case WT_NOTFOUND:
+		break;
+	default:
+        Debug( LDAP_DEBUG_ANY,
+			   "wt_add: error at wt_dn2pentry() rc=%d\n", rc );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+
+	if ( !p )
+		p = (Entry *)&slap_entry_root;
+
+	if ( !bvmatch( &pdn, &p->e_nname ) ) {
+		rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
+									   op->o_tmpmemctx );
+		if ( p != (Entry *)&slap_entry_root ) {
+			rs->sr_ref = is_entry_referral( p )
+				? get_entry_referrals( op, p )
+				: NULL;
+			wt_entry_return( p );
+		} else {
+			rs->sr_ref = NULL;
+		}
+		p = NULL;
+        Debug( LDAP_DEBUG_TRACE, "wt_add: parent does not exist\n" );
+        rs->sr_err = LDAP_REFERRAL;
+        rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
+        goto return_results;
+	}
+
+	rs->sr_err = access_allowed( op, p,
+								 children, NULL, ACL_WADD, NULL );
+	if ( ! rs->sr_err ) {
+		/*
+		if ( p != (Entry *)&slap_entry_root )
+			wt_entry_return( op, p );
+		*/
+		p = NULL;
+
+		Debug( LDAP_DEBUG_TRACE, "wt_add: no write access to parent\n" );
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		rs->sr_text = "no write access to parent";
+		goto return_results;;
+	}
+
+	if ( p != (Entry *)&slap_entry_root ) {
+		if ( is_entry_subentry( p ) ) {
+			wt_entry_return( p );
+			p = NULL;
+			/* parent is a subentry, don't allow add */
+			Debug( LDAP_DEBUG_TRACE, "wt_add: parent is subentry\n" );
+			rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
+			rs->sr_text = "parent is a subentry";
+			goto return_results;;
+		}
+
+		if ( is_entry_alias( p ) ) {
+			wt_entry_return( p );
+			p = NULL;
+			/* parent is an alias, don't allow add */
+			Debug( LDAP_DEBUG_TRACE, "wt_add: parent is alias\n" );
+			rs->sr_err = LDAP_ALIAS_PROBLEM;
+			rs->sr_text = "parent is an alias";
+			goto return_results;;
+		}
+
+		if ( is_entry_referral( p ) ) {
+			BerVarray ref = get_entry_referrals( op, p );
+			/* parent is a referral, don't allow add */
+			rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
+										   op->o_tmpmemctx );
+			rs->sr_ref = referral_rewrite( ref, &p->e_name,
+										   &op->o_req_dn, LDAP_SCOPE_DEFAULT );
+			ber_bvarray_free( ref );
+			wt_entry_return( p );
+			p = NULL;
+			Debug( LDAP_DEBUG_TRACE, "wt_add: parent is referral\n" );
+
+			rs->sr_err = LDAP_REFERRAL;
+			rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
+			goto return_results;
+		}
+	}
+
+#if 0
+	if ( subentry ) {
+		/* FIXME: */
+		/* parent must be an administrative point of the required kind */
+	}
+#endif
+
+	/* free parent */
+	if ( p != (Entry *)&slap_entry_root ) {
+		pid = p->e_id;
+		if ( p->e_nname.bv_len ) {
+			struct berval ppdn;
+
+			/* ITS#5326: use parent's DN if differs from provided one */
+			dnParent( &op->ora_e->e_name, &ppdn );
+			if ( !dn_match( &p->e_name, &ppdn ) ) {
+				struct berval rdn;
+				struct berval newdn;
+
+				dnRdn( &op->ora_e->e_name, &rdn );
+
+				build_new_dn( &newdn, &p->e_name, &rdn, NULL );
+				if ( op->ora_e->e_name.bv_val != op->o_req_dn.bv_val )
+					ber_memfree( op->ora_e->e_name.bv_val );
+				op->ora_e->e_name = newdn;
+
+				/* FIXME: should check whether
+                 * dnNormalize(newdn) == e->e_nname ... */
+			}
+		}
+
+		wt_entry_return( p );
+	}
+	p = NULL;
+
+	rs->sr_err = access_allowed( op, op->ora_e,
+								 entry, NULL, ACL_WADD, NULL );
+
+	if ( ! rs->sr_err ) {
+		Debug( LDAP_DEBUG_TRACE, "wt_add: no write access to entry\n" );
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		rs->sr_text = "no write access to entry";
+		goto return_results;
+	}
+
+	/*
+	 * Check ACL for attribute write access
+	 */
+	if (!acl_check_modlist(op, op->ora_e, op->ora_modlist)) {
+		Debug( LDAP_DEBUG_TRACE, "wt_add: no write access to attribute\n" );
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		rs->sr_text = "no write access to attribute";
+		goto return_results;
+	}
+
+	rc = wc->session->begin_transaction(wc->session, "isolation=read-uncommitted");
+	if( rc ) {
+		Debug( LDAP_DEBUG_TRACE, "wt_add: begin_transaction failed: %s (%d)\n",
+			   wiredtiger_strerror(rc), rc );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "begin_transaction failed";
+		goto return_results;
+	}
+	Debug( LDAP_DEBUG_TRACE, "wt_add: session id: %p\n", wc->session );
+
+	wt_next_id( op->o_bd, &eid );
+	op->ora_e->e_id = eid;
+
+	rc = wt_dn2id_add( op, wc, pid, op->ora_e );
+	if( rc ){
+		Debug( LDAP_DEBUG_TRACE,
+			   "wt_add: dn2id_add failed: %s (%d)\n",
+			   wiredtiger_strerror(rc), rc );
+		switch( rc ) {
+		case WT_DUPLICATE_KEY:
+			rs->sr_err = LDAP_ALREADY_EXISTS;
+			break;
+		default:
+			rs->sr_err = LDAP_OTHER;
+		}
+		wc->session->rollback_transaction(wc->session, NULL);
+		goto return_results;
+	}
+
+	rc = wt_id2entry_add( op, wc, op->ora_e );
+	if ( rc ) {
+		Debug( LDAP_DEBUG_TRACE,
+			   "wt_add: id2entry_add failed: %s (%d)\n",
+			   wiredtiger_strerror(rc), rc );
+		if ( rc == LDAP_ADMINLIMIT_EXCEEDED ) {
+			rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
+			rs->sr_text = "entry is too big";
+		} else {
+			rs->sr_err = LDAP_OTHER;
+			rs->sr_text = "entry store failed";
+		}
+		wc->session->rollback_transaction(wc->session, NULL);
+		goto return_results;
+	}
+
+	/* add indices */
+	rc = wt_index_entry_add( op, wc, op->ora_e );
+	if ( rc ) {
+		Debug(LDAP_DEBUG_TRACE,
+			  "<== wt_add: index add failed: %s (%d)\n",
+			  wiredtiger_strerror(rc), rc );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "index add failed";
+		wc->session->rollback_transaction(wc->session, NULL);
+		goto return_results;
+	}
+
+	rc = wc->session->commit_transaction(wc->session, NULL);
+	if( rc ) {
+		Debug( LDAP_DEBUG_TRACE,
+			   "<== wt_add: commit_transaction failed: %s (%d)\n",
+			   wiredtiger_strerror(rc), rc );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "commit_transaction failed";
+		goto return_results;
+	}
+
+	rs->sr_err = LDAP_SUCCESS;
+
+	/* post-read */
+	if( op->o_postread ) {
+		if( postread_ctrl == NULL ) {
+			postread_ctrl = &ctrls[num_ctrls++];
+			ctrls[num_ctrls] = NULL;
+		}
+		if ( slap_read_controls( op, rs, op->ora_e,
+								 &slap_post_read_bv, postread_ctrl ) )
+		{
+			Debug( LDAP_DEBUG_TRACE, "<=- wt_add: post-read failed!\n" );
+			if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
+				/* FIXME: is it correct to abort
+                 * operation if control fails? */
+				goto return_results;
+			}
+		}
+	}
+
+	Debug(LDAP_DEBUG_TRACE,
+		  "wt_add: added%s id=%08lx dn=\"%s\"\n",
+		  op->o_noop ? " (no-op)" : "",
+		  op->ora_e->e_id, op->ora_e->e_dn );
+
+return_results:
+	send_ldap_result( op, rs );
+
+	slap_graduate_commit_csn( op );
+
+	if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
+        slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
+        slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
+    }
+    return rs->sr_err;
+}
+
+/*
+ * Local variables:
+ * indent-tabs-mode: t
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */