apache-http-server/modules/ldap/util_ldap_cache.c

/* ====================================================================
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 *       "This product includes software developed by the
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/*
 * util_ldap_cache.c: LDAP cache things
 * 
 * Original code from auth_ldap module for Apache v1.3:
 * Copyright 1998, 1999 Enbridge Pipelines Inc. 
 * Copyright 1999-2001 Dave Carrigan
 */

#include <apr_ldap.h>
#include "util_ldap.h"
#include "util_ldap_cache.h"

#ifdef APU_HAS_LDAP




/* ------------------------------------------------------------------ */

unsigned long util_ldap_url_node_hash(void *n)
{
    util_url_node_t *node = (util_url_node_t *)n;
    return util_ald_hash_string(1, node->url);
}

int util_ldap_url_node_compare(void *a, void *b)
{
    util_url_node_t *na = (util_url_node_t *)a;
    util_url_node_t *nb = (util_url_node_t *)b;

    return(strcmp(na->url, nb->url) == 0);
}

void *util_ldap_url_node_copy(void *c)
{
    util_url_node_t *n = (util_url_node_t *)c;
    util_url_node_t *node = (util_url_node_t *)util_ald_alloc(sizeof(util_url_node_t));

    node->url = util_ald_strdup(n->url);
    node->search_cache = n->search_cache;
    node->compare_cache = n->compare_cache;
    node->dn_compare_cache = n->dn_compare_cache;
    return node;
}

void util_ldap_url_node_free(void *n)
{
    util_url_node_t *node = (util_url_node_t *)n;

    util_ald_free(node->url);
    util_ald_destroy_cache(node->search_cache);
    util_ald_destroy_cache(node->compare_cache);
    util_ald_destroy_cache(node->dn_compare_cache);
    util_ald_free(node);
}

/* ------------------------------------------------------------------ */

/* Cache functions for search nodes */
unsigned long util_ldap_search_node_hash(void *n)
{
    util_search_node_t *node = (util_search_node_t *)n;
    return util_ald_hash_string(1, ((util_search_node_t *)(node))->username);
}

int util_ldap_search_node_compare(void *a, void *b)
{
    return(strcmp(((util_search_node_t *)a)->username,
		  ((util_search_node_t *)b)->username) == 0);
}

void *util_ldap_search_node_copy(void *c)
{
    util_search_node_t *node = (util_search_node_t *)c;
    util_search_node_t *newnode = util_ald_alloc(sizeof(util_search_node_t));
    newnode->username = util_ald_strdup(node->username);
    newnode->dn = util_ald_strdup(node->dn);
    newnode->bindpw = util_ald_strdup(node->bindpw);
    newnode->lastbind = node->lastbind;
    return (void *)newnode;
}

void util_ldap_search_node_free(void *n)
{
    util_search_node_t *node = (util_search_node_t *)n;
    util_ald_free(node->username);
    util_ald_free(node->dn);
    util_ald_free(node->bindpw);
    util_ald_free(node);
}

/* ------------------------------------------------------------------ */

unsigned long util_ldap_compare_node_hash(void *n)
{
    util_compare_node_t *node = (util_compare_node_t *)n;
    return util_ald_hash_string(3, node->dn, node->attrib, node->value);
}

int util_ldap_compare_node_compare(void *a, void *b)
{
    util_compare_node_t *na = (util_compare_node_t *)a;
    util_compare_node_t *nb = (util_compare_node_t *)b;
    return (strcmp(na->dn, nb->dn) == 0 &&
	    strcmp(na->attrib, nb->attrib) == 0 &&
	    strcmp(na->value, nb->value) == 0);
}

void *util_ldap_compare_node_copy(void *c)
{
    util_compare_node_t *n = (util_compare_node_t *)c;
    util_compare_node_t *node = (util_compare_node_t *)util_ald_alloc(sizeof(util_compare_node_t));
    node->dn = util_ald_strdup(n->dn);
    node->attrib = util_ald_strdup(n->attrib);
    node->value = util_ald_strdup(n->value);
    node->lastcompare = n->lastcompare;
    return node;
}

void util_ldap_compare_node_free(void *n)
{
    util_compare_node_t *node = (util_compare_node_t *)n;
    util_ald_free(node->dn);
    util_ald_free(node->attrib);
    util_ald_free(node->value);
    util_ald_free(node);
}

/* ------------------------------------------------------------------ */

unsigned long util_ldap_dn_compare_node_hash(void *n)
{
    return util_ald_hash_string(1, ((util_dn_compare_node_t *)n)->reqdn);
}

int util_ldap_dn_compare_node_compare(void *a, void *b)
{
    return (strcmp(((util_dn_compare_node_t *)a)->reqdn,
		   ((util_dn_compare_node_t *)b)->reqdn) == 0);
}

void *util_ldap_dn_compare_node_copy(void *c)
{
    util_dn_compare_node_t *n = (util_dn_compare_node_t *)c;
    util_dn_compare_node_t *node = (util_dn_compare_node_t *)util_ald_alloc(sizeof(util_dn_compare_node_t));
    node->reqdn = util_ald_strdup(n->reqdn);
    node->dn = util_ald_strdup(n->dn);
    return node;
}

void util_ldap_dn_compare_node_free(void *n)
{
    util_dn_compare_node_t *node = (util_dn_compare_node_t *)n;
    util_ald_free(node->reqdn);
    util_ald_free(node->dn);
    util_ald_free(node);
}


/* ------------------------------------------------------------------ */
apr_status_t util_ldap_cache_child_kill(void *data);
apr_status_t util_ldap_cache_module_kill(void *data);

apr_status_t util_ldap_cache_module_kill(void *data)
{
#if APR_HAS_SHARED_MEMORY
    if (util_ldap_shm != NULL) {
        apr_status_t result = apr_shm_destroy(util_ldap_shm);
        util_ldap_shm = NULL;
        return result;
    }
#endif
    return APR_SUCCESS;
}

apr_status_t util_ldap_cache_init(apr_pool_t *pool, apr_size_t reqsize)
{
    apr_status_t result = APR_SUCCESS;
    apr_pool_cleanup_register(pool, NULL, util_ldap_cache_module_kill, apr_pool_cleanup_null);

#if APR_HAS_SHARED_MEMORY
    result = apr_shm_init(&util_ldap_shm, reqsize, "/tmp/ldap_cache", pool);
#endif
    util_ldap_cache = util_ald_create_cache(50,
				     util_ldap_url_node_hash,
				     util_ldap_url_node_compare,
				     util_ldap_url_node_copy,
				     util_ldap_url_node_free);
    return result;
}


#endif /* APU_HAS_LDAP */