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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.
*
* License: GPL (version 3 or any later version).
* See LICENSE for details.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* repl5_replica_dnhash.c */
#include "repl5.h"
#include "plhash.h"
/* global data */
static PLHashTable *s_hash;
static Slapi_RWLock *s_lock;
/* Forward declarations */
static PRIntn replica_destroy_hash_entry(PLHashEntry *he, PRIntn index, void *arg);
int
replica_init_dn_hash()
{
/* allocate table */
s_hash = PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
PL_CompareValues, NULL, NULL);
if (s_hash == NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_init_dn_hash: "
"failed to allocate hash table; NSPR error - %d\n",
PR_GetError());
return -1;
}
/* create lock */
s_lock = slapi_new_rwlock();
if (s_lock == NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_init_dn_hash: "
"failed to create lock; NSPR error - %d\n",
PR_GetError());
replica_destroy_dn_hash();
return -1;
}
return 0;
}
void
replica_destroy_dn_hash()
{
/* destroy the content */
PL_HashTableEnumerateEntries(s_hash, replica_destroy_hash_entry, NULL);
if (s_hash)
PL_HashTableDestroy(s_hash);
if (s_lock)
slapi_destroy_rwlock(s_lock);
}
int
replica_add_by_dn(const char *dn)
{
char *dn_copy = NULL;
if (dn == NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_add_by_dn: NULL argument\n");
return -1;
}
if (s_hash == NULL || s_lock == NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_add_by_dn: "
"replica hash is not initialized\n");
return -1;
}
slapi_rwlock_wrlock(s_lock);
/* make sure that the dn is unique */
if (PL_HashTableLookup(s_hash, dn) != NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_add_by_dn: "
"replica with dn (%s) already in the hash\n",
dn);
slapi_rwlock_unlock(s_lock);
return -1;
}
/* add dn */
dn_copy = slapi_ch_strdup(dn);
if (PL_HashTableAdd(s_hash, dn_copy, dn_copy) == NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_add_by_dn: "
"failed to add dn (%s); NSPR error - %d\n",
dn_copy, PR_GetError());
slapi_ch_free((void **)&dn_copy);
slapi_rwlock_unlock(s_lock);
return -1;
}
slapi_log_err(SLAPI_LOG_REPL, repl_plugin_name, "replica_add_by_dn: "
"added dn (%s)\n",
dn_copy);
slapi_rwlock_unlock(s_lock);
return 0;
}
int
replica_delete_by_dn(const char *dn)
{
char *dn_copy = NULL;
if (dn == NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_delete_by_dn: "
"NULL argument\n");
return -1;
}
if (s_hash == NULL || s_lock == NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_delete_by_dn: "
"replica hash is not initialized\n");
return -1;
}
slapi_rwlock_wrlock(s_lock);
/* locate object */
if (NULL == (dn_copy = (char *)PL_HashTableLookup(s_hash, dn))) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_delete_by_dn: "
"dn (%s) is not in the hash.\n",
dn);
slapi_rwlock_unlock(s_lock);
return -1;
}
/* remove from hash */
PL_HashTableRemove(s_hash, dn);
slapi_ch_free((void **)&dn_copy);
slapi_log_err(SLAPI_LOG_REPL, repl_plugin_name, "replica_delete_by_dn: "
"removed dn (%s)\n",
dn);
slapi_rwlock_unlock(s_lock);
return 0;
}
int
replica_is_being_configured(const char *dn)
{
if (dn == NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_is_being_configured: "
"NULL argument\n");
return 0;
}
if (s_hash == NULL || s_lock == NULL) {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name, "replica_is_being_configured: "
"dn hash is not initialized\n");
return 0;
}
slapi_rwlock_wrlock(s_lock);
/* locate object */
if (NULL == PL_HashTableLookup(s_hash, dn)) {
slapi_rwlock_unlock(s_lock);
return 0;
}
slapi_rwlock_unlock(s_lock);
return 1;
}
/* Helper functions */
/* this function called for each hash node during hash destruction */
static PRIntn
replica_destroy_hash_entry(PLHashEntry *he, PRIntn index __attribute__((unused)), void *arg __attribute__((unused)))
{
char *dn_copy;
if (he == NULL) {
return HT_ENUMERATE_NEXT;
}
dn_copy = (char *)he->value;
slapi_ch_free((void **)&dn_copy);
return HT_ENUMERATE_REMOVE;
}
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