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/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
/* repl5_updatedn_list.c */
/*
This is the internal representation for the list of update DNs in the replica.
The list is implemented as a hash table - the key is the normalized DN, and the
value is the Slapi_DN representation of the DN
*/
#include "repl5.h"
#include "plhash.h"
/* global data */
/* typedef ReplicaUpdateDNList PLHashTable; */
struct repl_enum_data
{
FNEnumDN fn;
void *arg;
};
/* Forward declarations */
static PRIntn replica_destroy_hash_entry (PLHashEntry *he, PRIntn index, void *arg);
static PRIntn updatedn_list_enumerate (PLHashEntry *he, PRIntn index, void *hash_data);
static int
updatedn_compare_dns(const void *d1, const void *d2)
{
return (0 == slapi_sdn_compare((const Slapi_DN *)d1, (const Slapi_DN *)d2));
}
/* create a new updatedn list - if the entry is given, initialize the list from
the replicabinddn values given in the entry */
ReplicaUpdateDNList
replica_updatedn_list_new(const Slapi_Entry *entry)
{
/* allocate table */
PLHashTable *hash = PL_NewHashTable(4, PL_HashString, PL_CompareStrings,
updatedn_compare_dns, NULL, NULL);
if (hash == NULL) {
slapi_log_error(SLAPI_LOG_FATAL, repl_plugin_name, "replica_new_updatedn_list: "
"failed to allocate hash table; NSPR error - %d\n",
PR_GetError ());
return NULL;
}
if (entry) {
Slapi_Attr *attr = NULL;
if (!slapi_entry_attr_find(entry, attr_replicaBindDn, &attr)) {
Slapi_ValueSet *vs = NULL;
slapi_attr_get_valueset(attr, &vs);
replica_updatedn_list_replace(hash, vs);
slapi_valueset_free(vs);
}
}
return (ReplicaUpdateDNList)hash;
}
void
replica_updatedn_list_free(ReplicaUpdateDNList list)
{
/* destroy the content */
PLHashTable *hash = list;
PL_HashTableEnumerateEntries(hash, replica_destroy_hash_entry, NULL);
if (hash)
PL_HashTableDestroy(hash);
}
void
replica_updatedn_list_replace(ReplicaUpdateDNList list, const Slapi_ValueSet *vs)
{
replica_updatedn_list_delete(list, NULL); /* delete all values */
replica_updatedn_list_add(list, vs);
}
/* if vs is given, delete only those values - otherwise, delete all values */
void
replica_updatedn_list_delete(ReplicaUpdateDNList list, const Slapi_ValueSet *vs)
{
PLHashTable *hash = list;
if (!vs || slapi_valueset_count(vs) == 0) { /* just delete everything */
PL_HashTableEnumerateEntries(hash, replica_destroy_hash_entry, NULL);
} else {
Slapi_ValueSet *vs_nc = (Slapi_ValueSet *)vs; /* cast away const */
Slapi_Value *val = NULL;
int index = 0;
for (index = slapi_valueset_first_value(vs_nc, &val); val;
index = slapi_valueset_next_value(vs_nc, index, &val)) {
Slapi_DN *dn = slapi_sdn_new_dn_byval(slapi_value_get_string(val));
/* locate object */
Slapi_DN *deldn = (Slapi_DN *)PL_HashTableLookup(hash, slapi_sdn_get_ndn(dn));
if (deldn == NULL)
{
slapi_log_error(SLAPI_LOG_REPL, repl_plugin_name, "replica_updatedn_list_delete: "
"update DN with value (%s) is not in the update DN list.\n",
slapi_sdn_get_ndn(dn));
} else {
/* remove from hash */
PL_HashTableRemove(hash, slapi_sdn_get_ndn(dn));
/* free the pointer */
slapi_sdn_free(&deldn);
}
/* free the temp dn */
slapi_sdn_free(&dn);
}
}
return;
}
void
replica_updatedn_list_add(ReplicaUpdateDNList list, const Slapi_ValueSet *vs)
{
PLHashTable *hash = list;
Slapi_ValueSet *vs_nc = (Slapi_ValueSet *)vs; /* cast away const */
Slapi_Value *val = NULL;
int index = 0;
PR_ASSERT(list && vs);
for (index = slapi_valueset_first_value(vs_nc, &val); val;
index = slapi_valueset_next_value(vs_nc, index, &val)) {
Slapi_DN *dn = slapi_sdn_new_dn_byval(slapi_value_get_string(val));
const char *ndn = slapi_sdn_get_ndn(dn);
/* make sure that the name is unique */
if (PL_HashTableLookup(hash, ndn) != NULL)
{
slapi_log_error(SLAPI_LOG_REPL, repl_plugin_name, "replica_updatedn_list_add: "
"update DN with value (%s) already in the update DN list\n",
ndn);
slapi_sdn_free(&dn);
} else {
PL_HashTableAdd(hash, ndn, dn);
}
}
return;
}
PRBool
replica_updatedn_list_ismember(ReplicaUpdateDNList list, const Slapi_DN *dn)
{
PLHashTable *hash = list;
PRBool ret = PR_FALSE;
const char *ndn = slapi_sdn_get_ndn(dn);
/* Bug 605169 - null ndn would cause core dump */
if ( ndn ) {
ret = (PRBool)PL_HashTableLookupConst(hash, ndn);
}
return ret;
}
struct list_to_string_data {
char *string;
const char *delimiter;
};
static int
convert_to_string(Slapi_DN *dn, void *arg)
{
struct list_to_string_data *data = (struct list_to_string_data *)arg;
int newlen = strlen(slapi_sdn_get_dn(dn)) + strlen(data->delimiter) + 1;
if (data->string) {
newlen += strlen(data->string);
data->string = slapi_ch_realloc(data->string, newlen);
} else {
data->string = slapi_ch_calloc(1, newlen);
}
strcat(data->string, slapi_sdn_get_dn(dn));
strcat(data->string, data->delimiter);
return 1;
}
/* caller must slapi_ch_free_string the returned string */
char *
replica_updatedn_list_to_string(ReplicaUpdateDNList list, const char *delimiter)
{
struct list_to_string_data data;
data.string = NULL;
data.delimiter = delimiter;
replica_updatedn_list_enumerate(list, convert_to_string, (void *)&data);
return data.string;
}
void
replica_updatedn_list_enumerate(ReplicaUpdateDNList list, FNEnumDN fn, void *arg)
{
PLHashTable *hash = list;
struct repl_enum_data data;
PR_ASSERT (fn);
data.fn = fn;
data.arg = arg;
PL_HashTableEnumerateEntries(hash, updatedn_list_enumerate, &data);
}
/* Helper functions */
/* this function called for each hash node during hash destruction */
static PRIntn
replica_destroy_hash_entry(PLHashEntry *he, PRIntn index, void *arg)
{
Slapi_DN *dn = NULL;
if (he == NULL)
return HT_ENUMERATE_NEXT;
dn = (Slapi_DN *)he->value;
PR_ASSERT (dn);
slapi_sdn_free(&dn);
return HT_ENUMERATE_REMOVE;
}
static PRIntn
updatedn_list_enumerate(PLHashEntry *he, PRIntn index, void *hash_data)
{
Slapi_DN *dn = NULL;
struct repl_enum_data *data = hash_data;
dn = (Slapi_DN*)he->value;
PR_ASSERT (dn);
data->fn(dn, data->arg);
return HT_ENUMERATE_NEXT;
}
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