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/** BEGIN COPYRIGHT BLOCK
* Copyright 2001 Sun Microsystems, Inc.
* Portions copyright 1999, 2001-2003 Netscape Communications Corporation.
* All rights reserved.
* END COPYRIGHT BLOCK **/
/*
* urp_tombstone.c - Update Resolution Procedures - Tombstones
*/
#include "slapi-plugin.h"
#include "repl5.h"
#include "urp.h"
extern int slapi_log_urp;
/*
* Check if the entry is a tombstone.
*/
int
is_tombstone_entry(const Slapi_Entry* entry)
{
int flag;
/* LP: This doesn't work very well with entries that we tombstone ourself */
flag = slapi_entry_flag_is_set (entry, SLAPI_ENTRY_FLAG_TOMBSTONE);
if (flag == 0)
{
/* This is slow */
flag = slapi_entry_attr_hasvalue(entry, SLAPI_ATTR_OBJECTCLASS, SLAPI_ATTR_VALUE_TOMBSTONE);
}
return flag;
}
PRBool
get_tombstone_csn(const Slapi_Entry *entry, const CSN **delcsn)
{
PRBool ists = PR_FALSE;
if (is_tombstone_entry(entry)) {
ists = PR_TRUE;
*delcsn = _get_deletion_csn((Slapi_Entry *)entry); /* cast away const */
}
return ists;
}
static int
tombstone_to_glue_resolve_parent (
Slapi_PBlock *pb,
const char *sessionid,
const Slapi_DN *parentdn,
const char *parentuniqueid,
CSN *opcsn)
{
/* Let's have a look at the parent of this entry... */
if(!slapi_sdn_isempty(parentdn) && parentuniqueid!=NULL)
{
int op_result;
Slapi_PBlock *newpb= slapi_pblock_new();
slapi_search_internal_set_pb(
newpb,
slapi_sdn_get_dn(parentdn), /* JCM - This DN just identifies the backend to be searched. */
LDAP_SCOPE_BASE,
"objectclass=*",
NULL, /*attrs*/
0, /*attrsonly*/
NULL, /*Controls*/
parentuniqueid, /*uniqueid*/
repl_get_plugin_identity(PLUGIN_MULTIMASTER_REPLICATION),
0);
slapi_search_internal_pb(newpb);
slapi_pblock_get(newpb, SLAPI_PLUGIN_INTOP_RESULT, &op_result);
switch(op_result)
{
case LDAP_SUCCESS:
{
Slapi_Entry **entries= NULL;
/* OK, the tombstone entry parent exists. Is it also a tombstone? */
slapi_pblock_get(newpb, SLAPI_PLUGIN_INTOP_SEARCH_ENTRIES, &entries);
if(entries!=NULL && entries[0]!=NULL)
{
if(is_tombstone_entry(entries[0]))
{
tombstone_to_glue (pb, sessionid, entries[0], parentdn, REASON_RESURRECT_ENTRY, opcsn);
}
}
else
{
/* JCM - Couldn't find the entry! */
}
}
break;
default:
/* So, the tombstone entry had a parent... but it's gone. */
/* That's probably a bad thing. */
break;
}
slapi_free_search_results_internal (newpb);
slapi_pblock_destroy(newpb);
}
return 0;
}
/*
* Convert a tombstone into a glue entry.
*/
int
tombstone_to_glue (
Slapi_PBlock *pb,
const char *sessionid,
Slapi_Entry *tombstoneentry,
const Slapi_DN *tombstonedn,
const char *reason,
CSN *opcsn)
{
Slapi_DN *parentdn;
char *parentuniqueid;
const char *tombstoneuniqueid;
Slapi_Entry *addingentry;
const char *addingdn;
int op_result;
/* JCMREPL
* Nothing logged to the 5.0 Change Log
* Add is logged to the 4.0 Change Log - Core server Add code
* must attach the entry to the Operation
*/
/* Resurrect the parent entry first */
/* JCM - This DN calculation is odd. It could resolve to NULL
* which won't help us identify the correct backend to search.
*/
is_suffix_dn (pb, tombstonedn, &parentdn);
parentuniqueid= slapi_entry_attr_get_charptr (tombstoneentry,
SLAPI_ATTR_VALUE_PARENT_UNIQUEID); /* Allocated */
tombstone_to_glue_resolve_parent (pb, sessionid, parentdn, parentuniqueid, opcsn);
slapi_sdn_free(&parentdn);
/* Submit an Add operation to turn the tombstone entry into glue. */
/*
* The tombstone is stored with an invalid DN, we must fix this.
*/
addingentry = slapi_entry_dup(tombstoneentry);
addingdn = slapi_sdn_get_dn(tombstonedn);
slapi_entry_set_dn(addingentry,slapi_ch_strdup(addingdn)); /* consumes DN */
if (!slapi_entry_attr_hasvalue(addingentry, ATTR_NSDS5_REPLCONFLICT, reason))
{
/* Add the reason of turning it to glue - The backend code will use it*/
slapi_entry_add_string(addingentry, ATTR_NSDS5_REPLCONFLICT, reason);
}
tombstoneuniqueid= slapi_entry_get_uniqueid(tombstoneentry);
op_result = urp_fixup_add_entry (addingentry, tombstoneuniqueid, parentuniqueid, opcsn, OP_FLAG_RESURECT_ENTRY);
if (op_result == LDAP_SUCCESS)
{
slapi_log_error (slapi_log_urp, repl_plugin_name,
"%s: Resurrected tombstone %s to glue reason '%s'\n", sessionid, addingdn, reason);
}
else
{
slapi_log_error (SLAPI_LOG_FATAL, repl_plugin_name,
"%s: Can't resurrect tombstone %s to glue reason '%s', error=%d\n",
sessionid, addingdn, reason, op_result);
}
slapi_entry_free (addingentry);
return op_result;
}
int
entry_to_tombstone ( Slapi_PBlock *pb, Slapi_Entry *entry )
{
Slapi_Operation *op;
Slapi_Mods smods;
CSN *opcsn;
const char *uniqueid;
int op_result = LDAP_SUCCESS;
slapi_pblock_get ( pb, SLAPI_OPERATION, &op );
opcsn = operation_get_csn ( op );
uniqueid = slapi_entry_get_uniqueid ( entry );
slapi_mods_init ( &smods, 2 );
/* Remove objectclass=glue */
slapi_mods_add ( &smods, LDAP_MOD_DELETE, SLAPI_ATTR_OBJECTCLASS, strlen("glue"), "glue");
/* Remove any URP conflict since a tombstone shouldn't
* be retrieved later for conflict removal.
*/
slapi_mods_add ( &smods, LDAP_MOD_DELETE, ATTR_NSDS5_REPLCONFLICT, 0, NULL );
op_result = urp_fixup_modify_entry (uniqueid, slapi_entry_get_dn_const (entry), opcsn, &smods, 0);
slapi_mods_done ( &smods );
/*
* Delete the entry.
*/
if ( op_result == LDAP_SUCCESS )
{
/*
* Using internal delete operation since it would go
* through the urp operations and trigger the recursive
* fixup if applicable.
*/
op_result = urp_fixup_delete_entry (uniqueid, slapi_entry_get_dn_const (entry), opcsn, 0);
}
return op_result;
}
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