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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
/*
* plugin_acl.c - routines for calling access control plugins
*/
#include "slap.h"
static int
acl_default_access(Slapi_PBlock *pb, Slapi_Entry *e, int access)
{
int isRoot, rootdse, accessCheckDisabled;
int rc;
slapi_pblock_get(pb, SLAPI_REQUESTOR_ISROOT, &isRoot);
if (isRoot)
return LDAP_SUCCESS;
rc = slapi_pblock_get(pb, SLAPI_PLUGIN_DB_NO_ACL, &accessCheckDisabled);
if (rc != -1 && accessCheckDisabled)
return LDAP_SUCCESS;
rootdse = slapi_is_rootdse(slapi_entry_get_ndn(e));
if (rootdse && (access & (SLAPI_ACL_READ | SLAPI_ACL_SEARCH)))
return LDAP_SUCCESS;
return LDAP_INSUFFICIENT_ACCESS;
}
int
plugin_call_acl_plugin(Slapi_PBlock *pb, Slapi_Entry *e, char **attrs, struct berval *val, int access, int flags, char **errbuf)
{
struct slapdplugin *p;
int rc = LDAP_INSUFFICIENT_ACCESS;
int aclplugin_initialized = 0;
Operation *operation;
slapi_pblock_get(pb, SLAPI_OPERATION, &operation);
/* we don't perform acl check for internal operations and if the plugin has set it not to be checked */
if (operation_is_flag_set(operation, SLAPI_OP_FLAG_NO_ACCESS_CHECK | OP_FLAG_INTERNAL | OP_FLAG_REPLICATED))
return LDAP_SUCCESS;
/* call the global plugins first and then the backend specific */
for (p = get_plugin_list(PLUGIN_LIST_ACL); p != NULL; p = p->plg_next) {
if (plugin_invoke_plugin_sdn(p, SLAPI_PLUGIN_ACL_ALLOW_ACCESS, pb,
(Slapi_DN *)slapi_entry_get_sdn_const(e))) {
aclplugin_initialized = 1;
rc = (*p->plg_acl_access_allowed)(pb, e, attrs, val, access, flags, errbuf);
if (rc != LDAP_SUCCESS)
break;
}
}
if (!aclplugin_initialized) {
rc = acl_default_access(pb, e, access);
}
return rc;
}
int
plugin_call_acl_mods_access(Slapi_PBlock *pb, Slapi_Entry *e, LDAPMod **mods, char **errbuf)
{
struct slapdplugin *p;
int aclplugin_initialized = 0;
int rc = LDAP_INSUFFICIENT_ACCESS;
Operation *operation;
slapi_pblock_get(pb, SLAPI_OPERATION, &operation);
/* we don't perform acl check for internal operations and if the plugin has set it not to be checked */
if (operation_is_flag_set(operation, SLAPI_OP_FLAG_NO_ACCESS_CHECK | OP_FLAG_INTERNAL | OP_FLAG_REPLICATED))
return LDAP_SUCCESS;
/* call the global plugins first and then the backend specific */
for (p = get_plugin_list(PLUGIN_LIST_ACL); p != NULL; p = p->plg_next) {
if (plugin_invoke_plugin_sdn(p, SLAPI_PLUGIN_ACL_MODS_ALLOWED, pb,
(Slapi_DN *)slapi_entry_get_sdn_const(e))) {
aclplugin_initialized = 1;
rc = (*p->plg_acl_mods_allowed)(pb, e, mods, errbuf);
if (rc != LDAP_SUCCESS)
break;
}
}
if (!aclplugin_initialized) {
rc = acl_default_access(pb, e, SLAPI_ACL_WRITE);
}
return rc;
}
/* This plugin should be called immediatly after the changes have been comitted */
/* This function is now fully executed for internal and replicated ops. */
int
plugin_call_acl_mods_update(Slapi_PBlock *pb, int optype)
{
struct slapdplugin *p;
int rc = 0;
void *change = NULL;
void *mychange[2];
Slapi_Entry *te = NULL;
Slapi_DN *sdn = NULL;
Operation *operation;
slapi_pblock_get(pb, SLAPI_OPERATION, &operation);
(void)slapi_pblock_get(pb, SLAPI_TARGET_SDN, &sdn);
switch (optype) {
case SLAPI_OPERATION_MODIFY:
(void)slapi_pblock_get(pb, SLAPI_MODIFY_MODS, &change);
break;
case SLAPI_OPERATION_ADD:
(void)slapi_pblock_get(pb, SLAPI_ADD_ENTRY, &change);
te = (Slapi_Entry *)change;
if (!slapi_sdn_isempty(slapi_entry_get_sdn(te))) {
sdn = slapi_entry_get_sdn(te);
}
break;
case SLAPI_OPERATION_MODRDN: {
char *newrdn = NULL;
Slapi_DN *psdn = NULL;
char *pdn = NULL;
/* newrdn: "change" is normalized but not case-ignored */
/* The acl plugin expects normalized newrdn, but no need to be case-
* ignored. */
(void)slapi_pblock_get(pb, SLAPI_MODRDN_NEWRDN, &newrdn);
(void)slapi_pblock_get(pb, SLAPI_MODRDN_NEWSUPERIOR_SDN, &psdn);
if (psdn) {
pdn = (char *)slapi_sdn_get_dn(psdn);
} else {
(void)slapi_pblock_get(pb, SLAPI_MODRDN_NEWSUPERIOR, &pdn);
}
mychange[0] = newrdn;
mychange[1] = pdn;
change = mychange;
break;
}
}
if (NULL == sdn) {
slapi_log_err(SLAPI_LOG_ERR, "plugin_call_acl_mods_update", "NULL target DN\n");
return LDAP_INVALID_DN_SYNTAX;
}
/* call the global plugins first and then the backend specific */
for (p = get_plugin_list(PLUGIN_LIST_ACL); p != NULL; p = p->plg_next) {
if (plugin_invoke_plugin_sdn(p, SLAPI_PLUGIN_ACL_MODS_UPDATE, pb, sdn)) {
rc = (*p->plg_acl_mods_update)(pb, optype, sdn, change);
if (rc != LDAP_SUCCESS)
break;
}
}
return rc;
}
int
plugin_call_acl_verify_syntax(Slapi_PBlock *pb, Slapi_Entry *e, char **errbuf)
{
struct slapdplugin *p;
int rc = 0;
int plugin_called = 0;
Operation *operation;
slapi_pblock_get(pb, SLAPI_OPERATION, &operation);
/* we don't perform acl check for internal operations and if the plugin has set it not to be checked */
if (operation_is_flag_set(operation, SLAPI_OP_FLAG_NO_ACCESS_CHECK | OP_FLAG_INTERNAL | OP_FLAG_REPLICATED))
return LDAP_SUCCESS;
/* call the global plugins first and then the backend specific */
for (p = get_plugin_list(PLUGIN_LIST_ACL); p != NULL; p = p->plg_next) {
if (plugin_invoke_plugin_sdn(p, SLAPI_PLUGIN_ACL_SYNTAX_CHECK, pb,
(Slapi_DN *)slapi_entry_get_sdn_const(e))) {
plugin_called = 1;
rc = (*p->plg_acl_syntax_check)(pb, e, errbuf);
if (rc != LDAP_SUCCESS)
break;
}
}
if (!plugin_called) {
slapi_log_err(SLAPI_LOG_ERR, "plugin_call_acl_verify_syntax",
"The ACL plugin is not initialized. The aci syntax cannot be verified\n");
}
return rc;
}
int
slapi_access_allowed(Slapi_PBlock *pb, Slapi_Entry *e, char *attr, struct berval *val, int access)
{
char *attrs[2] = {NULL, NULL};
attrs[0] = attr;
return (plugin_call_acl_plugin(pb, e, attrs, val, access, ACLPLUGIN_ACCESS_DEFAULT, NULL));
}
int
slapi_acl_check_mods(Slapi_PBlock *pb, Slapi_Entry *e, LDAPMod **mods, char **errbuf)
{
return (plugin_call_acl_mods_access(pb, e, mods, errbuf));
}
int
slapi_acl_verify_aci_syntax(Slapi_PBlock *pb, Slapi_Entry *e, char **errbuf)
{
return (plugin_call_acl_verify_syntax(pb, e, errbuf));
}
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