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4a442e2eb7
sid_parse takes a binary blob, uint8_t reflects this a bit better than char * does Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
1876 lines
50 KiB
C
1876 lines
50 KiB
C
/*
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Unix SMB/CIFS implementation.
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LDAP protocol helper functions for SAMBA
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Copyright (C) Jean François Micouleau 1998
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Copyright (C) Gerald Carter 2001-2003
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Copyright (C) Shahms King 2001
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Copyright (C) Andrew Bartlett 2002-2003
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Copyright (C) Stefan (metze) Metzmacher 2002-2003
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "smbldap.h"
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#include "../libcli/security/security.h"
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#include <tevent.h>
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#include "lib/param/loadparm.h"
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/* Try not to hit the up or down server forever */
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#define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
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#define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
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#define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
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/*******************************************************************
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Search an attribute and return the first value found.
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******************************************************************/
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bool smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
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const char *attribute, char *value,
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int max_len)
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{
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char **values;
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size_t size = 0;
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if ( !attribute )
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return False;
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value[0] = '\0';
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if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
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DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
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return False;
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}
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if (!convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, &size)) {
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DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
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attribute, values[0]));
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ldap_value_free(values);
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return False;
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}
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ldap_value_free(values);
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#ifdef DEBUG_PASSWORDS
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DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
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#endif
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return True;
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}
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char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
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const char *attribute,
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TALLOC_CTX *mem_ctx)
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{
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char **values;
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char *result;
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size_t converted_size;
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if (attribute == NULL) {
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return NULL;
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}
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values = ldap_get_values(ldap_struct, entry, attribute);
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if (values == NULL) {
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DEBUG(10, ("attribute %s does not exist\n", attribute));
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return NULL;
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}
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if (ldap_count_values(values) != 1) {
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DEBUG(10, ("attribute %s has %d values, expected only one\n",
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attribute, ldap_count_values(values)));
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ldap_value_free(values);
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return NULL;
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}
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if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
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DEBUG(10, ("pull_utf8_talloc failed\n"));
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ldap_value_free(values);
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return NULL;
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}
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ldap_value_free(values);
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#ifdef DEBUG_PASSWORDS
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DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
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attribute, result));
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#endif
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return result;
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}
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char * smbldap_talloc_first_attribute(LDAP *ldap_struct, LDAPMessage *entry,
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const char *attribute,
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TALLOC_CTX *mem_ctx)
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{
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char **values;
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char *result;
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size_t converted_size;
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if (attribute == NULL) {
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return NULL;
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}
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values = ldap_get_values(ldap_struct, entry, attribute);
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if (values == NULL) {
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DEBUG(10, ("attribute %s does not exist\n", attribute));
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return NULL;
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}
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if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
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DEBUG(10, ("pull_utf8_talloc failed\n"));
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ldap_value_free(values);
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return NULL;
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}
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ldap_value_free(values);
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#ifdef DEBUG_PASSWORDS
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DEBUG (100, ("smbldap_get_first_attribute: [%s] = [%s]\n",
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attribute, result));
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#endif
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return result;
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}
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char * smbldap_talloc_smallest_attribute(LDAP *ldap_struct, LDAPMessage *entry,
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const char *attribute,
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TALLOC_CTX *mem_ctx)
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{
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char **values;
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char *result;
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size_t converted_size;
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int i, num_values;
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if (attribute == NULL) {
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return NULL;
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}
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values = ldap_get_values(ldap_struct, entry, attribute);
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if (values == NULL) {
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DEBUG(10, ("attribute %s does not exist\n", attribute));
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return NULL;
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}
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if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
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DEBUG(10, ("pull_utf8_talloc failed\n"));
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ldap_value_free(values);
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return NULL;
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}
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num_values = ldap_count_values(values);
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for (i=1; i<num_values; i++) {
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char *tmp;
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if (!pull_utf8_talloc(mem_ctx, &tmp, values[i],
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&converted_size)) {
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DEBUG(10, ("pull_utf8_talloc failed\n"));
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TALLOC_FREE(result);
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ldap_value_free(values);
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return NULL;
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}
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if (strcasecmp_m(tmp, result) < 0) {
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TALLOC_FREE(result);
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result = tmp;
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} else {
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TALLOC_FREE(tmp);
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}
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}
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ldap_value_free(values);
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#ifdef DEBUG_PASSWORDS
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DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
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attribute, result));
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#endif
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return result;
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}
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bool smbldap_talloc_single_blob(TALLOC_CTX *mem_ctx, LDAP *ld,
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LDAPMessage *msg, const char *attrib,
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DATA_BLOB *blob)
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{
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struct berval **values;
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values = ldap_get_values_len(ld, msg, attrib);
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if (!values) {
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return false;
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}
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if (ldap_count_values_len(values) != 1) {
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DEBUG(10, ("Expected one value for %s, got %d\n", attrib,
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ldap_count_values_len(values)));
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return false;
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}
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*blob = data_blob_talloc(mem_ctx, values[0]->bv_val,
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values[0]->bv_len);
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ldap_value_free_len(values);
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return (blob->data != NULL);
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}
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bool smbldap_pull_sid(LDAP *ld, LDAPMessage *msg, const char *attrib,
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struct dom_sid *sid)
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{
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DATA_BLOB blob;
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bool ret;
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if (!smbldap_talloc_single_blob(talloc_tos(), ld, msg, attrib,
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&blob)) {
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return false;
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}
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ret = sid_parse(blob.data, blob.length, sid);
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TALLOC_FREE(blob.data);
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return ret;
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}
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static int ldapmsg_destructor(LDAPMessage **result) {
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ldap_msgfree(*result);
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return 0;
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}
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void smbldap_talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
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{
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LDAPMessage **handle;
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if (result == NULL) {
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return;
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}
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handle = talloc(mem_ctx, LDAPMessage *);
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SMB_ASSERT(handle != NULL);
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*handle = result;
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talloc_set_destructor(handle, ldapmsg_destructor);
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}
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static int ldapmod_destructor(LDAPMod ***mod) {
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ldap_mods_free(*mod, True);
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return 0;
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}
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void smbldap_talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
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{
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LDAPMod ***handle;
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if (mod == NULL) {
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return;
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}
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handle = talloc(mem_ctx, LDAPMod **);
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SMB_ASSERT(handle != NULL);
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*handle = mod;
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talloc_set_destructor(handle, ldapmod_destructor);
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}
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/************************************************************************
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Routine to manage the LDAPMod structure array
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manage memory used by the array, by each struct, and values
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***********************************************************************/
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static void smbldap_set_mod_internal(LDAPMod *** modlist, int modop, const char *attribute, const char *value, const DATA_BLOB *blob)
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{
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LDAPMod **mods;
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int i;
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int j;
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mods = *modlist;
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/* sanity checks on the mod values */
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if (attribute == NULL || *attribute == '\0') {
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return;
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}
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#if 0 /* commented out after discussion with abartlet. Do not reenable.
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left here so other do not re-add similar code --jerry */
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if (value == NULL || *value == '\0')
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return;
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#endif
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if (mods == NULL) {
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mods = SMB_MALLOC_P(LDAPMod *);
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if (mods == NULL) {
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smb_panic("smbldap_set_mod: out of memory!");
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/* notreached. */
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}
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mods[0] = NULL;
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}
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for (i = 0; mods[i] != NULL; ++i) {
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if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
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break;
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}
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if (mods[i] == NULL) {
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mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
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if (mods == NULL) {
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smb_panic("smbldap_set_mod: out of memory!");
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/* notreached. */
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}
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mods[i] = SMB_MALLOC_P(LDAPMod);
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if (mods[i] == NULL) {
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smb_panic("smbldap_set_mod: out of memory!");
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/* notreached. */
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}
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mods[i]->mod_op = modop;
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mods[i]->mod_values = NULL;
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mods[i]->mod_type = SMB_STRDUP(attribute);
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mods[i + 1] = NULL;
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}
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if (blob && (modop & LDAP_MOD_BVALUES)) {
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j = 0;
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if (mods[i]->mod_bvalues != NULL) {
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for (; mods[i]->mod_bvalues[j] != NULL; j++);
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}
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mods[i]->mod_bvalues = SMB_REALLOC_ARRAY(mods[i]->mod_bvalues, struct berval *, j + 2);
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if (mods[i]->mod_bvalues == NULL) {
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smb_panic("smbldap_set_mod: out of memory!");
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/* notreached. */
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}
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mods[i]->mod_bvalues[j] = SMB_MALLOC_P(struct berval);
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SMB_ASSERT(mods[i]->mod_bvalues[j] != NULL);
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mods[i]->mod_bvalues[j]->bv_val = (char *)smb_memdup(blob->data, blob->length);
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SMB_ASSERT(mods[i]->mod_bvalues[j]->bv_val != NULL);
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mods[i]->mod_bvalues[j]->bv_len = blob->length;
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mods[i]->mod_bvalues[j + 1] = NULL;
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} else if (value != NULL) {
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char *utf8_value = NULL;
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size_t converted_size;
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j = 0;
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if (mods[i]->mod_values != NULL) {
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for (; mods[i]->mod_values[j] != NULL; j++);
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}
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mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
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if (mods[i]->mod_values == NULL) {
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smb_panic("smbldap_set_mod: out of memory!");
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/* notreached. */
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}
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if (!push_utf8_talloc(talloc_tos(), &utf8_value, value, &converted_size)) {
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smb_panic("smbldap_set_mod: String conversion failure!");
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/* notreached. */
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}
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mods[i]->mod_values[j] = SMB_STRDUP(utf8_value);
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TALLOC_FREE(utf8_value);
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SMB_ASSERT(mods[i]->mod_values[j] != NULL);
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mods[i]->mod_values[j + 1] = NULL;
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}
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*modlist = mods;
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}
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void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
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{
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smbldap_set_mod_internal(modlist, modop, attribute, value, NULL);
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}
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void smbldap_set_mod_blob(LDAPMod *** modlist, int modop, const char *attribute, const DATA_BLOB *value)
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{
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smbldap_set_mod_internal(modlist, modop | LDAP_MOD_BVALUES, attribute, NULL, value);
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}
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/**********************************************************************
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Set attribute to newval in LDAP, regardless of what value the
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attribute had in LDAP before.
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*********************************************************************/
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static void smbldap_make_mod_internal(LDAP *ldap_struct, LDAPMessage *existing,
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LDAPMod ***mods,
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const char *attribute, int op,
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const char *newval,
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const DATA_BLOB *newblob)
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{
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char oldval[2048]; /* current largest allowed value is mungeddial */
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bool existed;
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DATA_BLOB oldblob = data_blob_null;
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if (existing != NULL) {
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if (op & LDAP_MOD_BVALUES) {
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existed = smbldap_talloc_single_blob(talloc_tos(), ldap_struct, existing, attribute, &oldblob);
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} else {
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existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
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}
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} else {
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existed = False;
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*oldval = '\0';
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}
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if (existed) {
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bool equal = false;
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if (op & LDAP_MOD_BVALUES) {
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equal = (newblob && (data_blob_cmp(&oldblob, newblob) == 0));
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} else {
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/* all of our string attributes are case insensitive */
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equal = (newval && (strcasecmp_m(oldval, newval) == 0));
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}
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if (equal) {
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/* Believe it or not, but LDAP will deny a delete and
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an add at the same time if the values are the
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same... */
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DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
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return;
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}
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/* There has been no value before, so don't delete it.
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* Here's a possible race: We might end up with
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* duplicate attributes */
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/* By deleting exactly the value we found in the entry this
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* should be race-free in the sense that the LDAP-Server will
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* deny the complete operation if somebody changed the
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* attribute behind our back. */
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/* This will also allow modifying single valued attributes
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* in Novell NDS. In NDS you have to first remove attribute and then
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* you could add new value */
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if (op & LDAP_MOD_BVALUES) {
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DEBUG(10,("smbldap_make_mod: deleting attribute |%s| blob\n", attribute));
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smbldap_set_mod_blob(mods, LDAP_MOD_DELETE, attribute, &oldblob);
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} else {
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DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
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smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
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}
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}
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/* Regardless of the real operation (add or modify)
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we add the new value here. We rely on deleting
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the old value, should it exist. */
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if (op & LDAP_MOD_BVALUES) {
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if (newblob && newblob->length) {
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DEBUG(10,("smbldap_make_mod: adding attribute |%s| blob\n", attribute));
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smbldap_set_mod_blob(mods, LDAP_MOD_ADD, attribute, newblob);
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}
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} else {
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if ((newval != NULL) && (strlen(newval) > 0)) {
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DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
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smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
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}
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}
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}
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void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
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LDAPMod ***mods,
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const char *attribute, const char *newval)
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{
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smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
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0, newval, NULL);
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}
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void smbldap_make_mod_blob(LDAP *ldap_struct, LDAPMessage *existing,
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LDAPMod ***mods,
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const char *attribute, const DATA_BLOB *newblob)
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{
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smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
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LDAP_MOD_BVALUES, NULL, newblob);
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}
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/**********************************************************************
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Some varients of the LDAP rebind code do not pass in the third 'arg'
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pointer to a void*, so we try and work around it by assuming that the
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value of the 'LDAP *' pointer is the same as the one we had passed in
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**********************************************************************/
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struct smbldap_state_lookup {
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LDAP *ld;
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struct smbldap_state *smbldap_state;
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struct smbldap_state_lookup *prev, *next;
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};
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|
|
static struct smbldap_state_lookup *smbldap_state_lookup_list;
|
|
|
|
static struct smbldap_state *smbldap_find_state(LDAP *ld)
|
|
{
|
|
struct smbldap_state_lookup *t;
|
|
|
|
for (t = smbldap_state_lookup_list; t; t = t->next) {
|
|
if (t->ld == ld) {
|
|
return t->smbldap_state;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void smbldap_delete_state(struct smbldap_state *smbldap_state)
|
|
{
|
|
struct smbldap_state_lookup *t;
|
|
|
|
for (t = smbldap_state_lookup_list; t; t = t->next) {
|
|
if (t->smbldap_state == smbldap_state) {
|
|
DLIST_REMOVE(smbldap_state_lookup_list, t);
|
|
SAFE_FREE(t);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
|
|
{
|
|
struct smbldap_state *tmp_ldap_state;
|
|
struct smbldap_state_lookup *t;
|
|
|
|
if ((tmp_ldap_state = smbldap_find_state(ld))) {
|
|
SMB_ASSERT(tmp_ldap_state == smbldap_state);
|
|
return;
|
|
}
|
|
|
|
t = SMB_XMALLOC_P(struct smbldap_state_lookup);
|
|
ZERO_STRUCTP(t);
|
|
|
|
DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
|
|
t->ld = ld;
|
|
t->smbldap_state = smbldap_state;
|
|
}
|
|
|
|
/********************************************************************
|
|
start TLS on an existing LDAP connection
|
|
*******************************************************************/
|
|
|
|
int smbldap_start_tls(LDAP *ldap_struct, int version)
|
|
{
|
|
#ifdef LDAP_OPT_X_TLS
|
|
int rc;
|
|
#endif
|
|
|
|
if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
#ifdef LDAP_OPT_X_TLS
|
|
if (version != LDAP_VERSION3) {
|
|
DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
|
|
return LDAP_OPERATIONS_ERROR;
|
|
}
|
|
|
|
if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
|
|
DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
|
|
ldap_err2string(rc)));
|
|
return rc;
|
|
}
|
|
|
|
DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
|
|
return LDAP_SUCCESS;
|
|
#else
|
|
DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
|
|
return LDAP_OPERATIONS_ERROR;
|
|
#endif
|
|
}
|
|
|
|
/********************************************************************
|
|
setup a connection to the LDAP server based on a uri
|
|
*******************************************************************/
|
|
|
|
static int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
|
|
{
|
|
int rc;
|
|
|
|
DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
|
|
|
|
#ifdef HAVE_LDAP_INITIALIZE
|
|
|
|
rc = ldap_initialize(ldap_struct, uri);
|
|
if (rc) {
|
|
DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
|
|
return rc;
|
|
}
|
|
|
|
if (lp_ldap_follow_referral() != Auto) {
|
|
rc = ldap_set_option(*ldap_struct, LDAP_OPT_REFERRALS,
|
|
lp_ldap_follow_referral() ? LDAP_OPT_ON : LDAP_OPT_OFF);
|
|
if (rc != LDAP_SUCCESS)
|
|
DEBUG(0, ("Failed to set LDAP_OPT_REFERRALS: %s\n",
|
|
ldap_err2string(rc)));
|
|
}
|
|
|
|
return LDAP_SUCCESS;
|
|
#else
|
|
|
|
/* Parse the string manually */
|
|
|
|
{
|
|
int port = 0;
|
|
fstring protocol;
|
|
fstring host;
|
|
SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
|
|
|
|
|
|
/* skip leading "URL:" (if any) */
|
|
if ( strnequal( uri, "URL:", 4 ) ) {
|
|
uri += 4;
|
|
}
|
|
|
|
sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
|
|
|
|
if (port == 0) {
|
|
if (strequal(protocol, "ldap")) {
|
|
port = LDAP_PORT;
|
|
} else if (strequal(protocol, "ldaps")) {
|
|
port = LDAPS_PORT;
|
|
} else {
|
|
DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
|
|
}
|
|
}
|
|
|
|
if ((*ldap_struct = ldap_init(host, port)) == NULL) {
|
|
DEBUG(0, ("ldap_init failed !\n"));
|
|
return LDAP_OPERATIONS_ERROR;
|
|
}
|
|
|
|
if (strequal(protocol, "ldaps")) {
|
|
#ifdef LDAP_OPT_X_TLS
|
|
int tls = LDAP_OPT_X_TLS_HARD;
|
|
if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
|
|
{
|
|
DEBUG(0, ("Failed to setup a TLS session\n"));
|
|
}
|
|
|
|
DEBUG(3,("LDAPS option set...!\n"));
|
|
#else
|
|
DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
|
|
return LDAP_OPERATIONS_ERROR;
|
|
#endif /* LDAP_OPT_X_TLS */
|
|
}
|
|
}
|
|
#endif /* HAVE_LDAP_INITIALIZE */
|
|
|
|
/* now set connection timeout */
|
|
#ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
|
|
{
|
|
int ct = lp_ldap_connection_timeout()*1000;
|
|
rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
|
|
if (rc != LDAP_SUCCESS) {
|
|
DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
|
|
ct, ldap_err2string(rc)));
|
|
}
|
|
}
|
|
#elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
|
|
{
|
|
struct timeval ct;
|
|
ct.tv_usec = 0;
|
|
ct.tv_sec = lp_ldap_connection_timeout();
|
|
rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
|
|
if (rc != LDAP_SUCCESS) {
|
|
DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
|
|
(int)ct.tv_sec, ldap_err2string(rc)));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
/********************************************************************
|
|
try to upgrade to Version 3 LDAP if not already, in either case return current
|
|
version
|
|
*******************************************************************/
|
|
|
|
static int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
|
|
{
|
|
int version;
|
|
int rc;
|
|
|
|
/* assume the worst */
|
|
*new_version = LDAP_VERSION2;
|
|
|
|
rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
if (version == LDAP_VERSION3) {
|
|
*new_version = LDAP_VERSION3;
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
/* try upgrade */
|
|
version = LDAP_VERSION3;
|
|
rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
*new_version = LDAP_VERSION3;
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
/*******************************************************************
|
|
open a connection to the ldap server (just until the bind)
|
|
******************************************************************/
|
|
|
|
int smbldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
|
|
{
|
|
int rc, version;
|
|
|
|
rc = smb_ldap_setup_conn(ldap_struct, uri);
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
rc = smbldap_start_tls(*ldap_struct, version);
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
/*******************************************************************
|
|
open a connection to the ldap server.
|
|
******************************************************************/
|
|
static int smbldap_open_connection (struct smbldap_state *ldap_state)
|
|
|
|
{
|
|
int rc = LDAP_SUCCESS;
|
|
int version;
|
|
int deref;
|
|
LDAP **ldap_struct = &ldap_state->ldap_struct;
|
|
|
|
rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
/* Store the LDAP pointer in a lookup list */
|
|
|
|
smbldap_store_state(*ldap_struct, ldap_state);
|
|
|
|
/* Upgrade to LDAPv3 if possible */
|
|
|
|
rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
/* Start TLS if required */
|
|
|
|
rc = smbldap_start_tls(*ldap_struct, version);
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
/* Set alias dereferencing method */
|
|
deref = lp_ldap_deref();
|
|
if (deref != -1) {
|
|
if (ldap_set_option (*ldap_struct, LDAP_OPT_DEREF, &deref) != LDAP_OPT_SUCCESS) {
|
|
DEBUG(1,("smbldap_open_connection: Failed to set dereferencing method: %d\n", deref));
|
|
} else {
|
|
DEBUG(5,("Set dereferencing method: %d\n", deref));
|
|
}
|
|
}
|
|
|
|
DEBUG(2, ("smbldap_open_connection: connection opened\n"));
|
|
return rc;
|
|
}
|
|
|
|
/*******************************************************************
|
|
a rebind function for authenticated referrals
|
|
This version takes a void* that we can shove useful stuff in :-)
|
|
******************************************************************/
|
|
#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
|
|
#else
|
|
static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
|
|
int *methodp, int freeit, void *arg)
|
|
{
|
|
struct smbldap_state *ldap_state = arg;
|
|
struct timespec ts;
|
|
|
|
/** @TODO Should we be doing something to check what servers we rebind to?
|
|
Could we get a referral to a machine that we don't want to give our
|
|
username and password to? */
|
|
|
|
if (freeit) {
|
|
SAFE_FREE(*whop);
|
|
if (*credp) {
|
|
memset(*credp, '\0', strlen(*credp));
|
|
}
|
|
SAFE_FREE(*credp);
|
|
} else {
|
|
DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
|
|
ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
|
|
|
|
if (ldap_state->anonymous) {
|
|
*whop = NULL;
|
|
*credp = NULL;
|
|
} else {
|
|
*whop = SMB_STRDUP(ldap_state->bind_dn);
|
|
if (!*whop) {
|
|
return LDAP_NO_MEMORY;
|
|
}
|
|
*credp = SMB_STRDUP(ldap_state->bind_secret);
|
|
if (!*credp) {
|
|
SAFE_FREE(*whop);
|
|
return LDAP_NO_MEMORY;
|
|
}
|
|
}
|
|
*methodp = LDAP_AUTH_SIMPLE;
|
|
}
|
|
|
|
clock_gettime_mono(&ts);
|
|
ldap_state->last_rebind = convert_timespec_to_timeval(ts);
|
|
|
|
return 0;
|
|
}
|
|
#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
|
|
|
|
/*******************************************************************
|
|
a rebind function for authenticated referrals
|
|
This version takes a void* that we can shove useful stuff in :-)
|
|
and actually does the connection.
|
|
******************************************************************/
|
|
#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
|
|
static int rebindproc_connect_with_state (LDAP *ldap_struct,
|
|
LDAP_CONST char *url,
|
|
ber_tag_t request,
|
|
ber_int_t msgid, void *arg)
|
|
{
|
|
struct smbldap_state *ldap_state =
|
|
(struct smbldap_state *)arg;
|
|
int rc;
|
|
struct timespec ts;
|
|
int version;
|
|
|
|
DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
|
|
url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
|
|
|
|
/* call START_TLS again (ldaps:// is handled by the OpenLDAP library
|
|
* itself) before rebinding to another LDAP server to avoid to expose
|
|
* our credentials. At least *try* to secure the connection - Guenther */
|
|
|
|
smb_ldap_upgrade_conn(ldap_struct, &version);
|
|
smbldap_start_tls(ldap_struct, version);
|
|
|
|
/** @TODO Should we be doing something to check what servers we rebind to?
|
|
Could we get a referral to a machine that we don't want to give our
|
|
username and password to? */
|
|
|
|
rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
|
|
|
|
/* only set the last rebind timestamp when we did rebind after a
|
|
* non-read LDAP operation. That way we avoid the replication sleep
|
|
* after a simple redirected search operation - Guenther */
|
|
|
|
switch (request) {
|
|
|
|
case LDAP_REQ_MODIFY:
|
|
case LDAP_REQ_ADD:
|
|
case LDAP_REQ_DELETE:
|
|
case LDAP_REQ_MODDN:
|
|
case LDAP_REQ_EXTENDED:
|
|
DEBUG(10,("rebindproc_connect_with_state: "
|
|
"setting last_rebind timestamp "
|
|
"(req: 0x%02x)\n", (unsigned int)request));
|
|
clock_gettime_mono(&ts);
|
|
ldap_state->last_rebind = convert_timespec_to_timeval(ts);
|
|
break;
|
|
default:
|
|
ZERO_STRUCT(ldap_state->last_rebind);
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
|
|
|
|
/*******************************************************************
|
|
Add a rebind function for authenticated referrals
|
|
******************************************************************/
|
|
#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
|
|
#else
|
|
# if LDAP_SET_REBIND_PROC_ARGS == 2
|
|
static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
|
|
int *method, int freeit )
|
|
{
|
|
struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
|
|
|
|
return rebindproc_with_state(ldap_struct, whop, credp,
|
|
method, freeit, ldap_state);
|
|
}
|
|
# endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
|
|
#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
|
|
|
|
/*******************************************************************
|
|
a rebind function for authenticated referrals
|
|
this also does the connection, but no void*.
|
|
******************************************************************/
|
|
#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
|
|
# if LDAP_SET_REBIND_PROC_ARGS == 2
|
|
static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
|
|
ber_int_t msgid)
|
|
{
|
|
struct smbldap_state *ldap_state = smbldap_find_state(ld);
|
|
|
|
return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
|
|
ldap_state);
|
|
}
|
|
# endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
|
|
#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
|
|
|
|
/*******************************************************************
|
|
connect to the ldap server under system privilege.
|
|
******************************************************************/
|
|
static int smbldap_connect_system(struct smbldap_state *ldap_state)
|
|
{
|
|
LDAP *ldap_struct = ldap_state->ldap_struct;
|
|
int rc;
|
|
int version;
|
|
|
|
/* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
|
|
(OpenLDAP) doesnt' seem to support it */
|
|
|
|
DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
|
|
ldap_state->uri, ldap_state->bind_dn));
|
|
|
|
#ifdef HAVE_LDAP_SET_REBIND_PROC
|
|
#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
|
|
# if LDAP_SET_REBIND_PROC_ARGS == 2
|
|
ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
|
|
# endif
|
|
# if LDAP_SET_REBIND_PROC_ARGS == 3
|
|
ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
|
|
# endif
|
|
#else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
|
|
# if LDAP_SET_REBIND_PROC_ARGS == 2
|
|
ldap_set_rebind_proc(ldap_struct, &rebindproc);
|
|
# endif
|
|
# if LDAP_SET_REBIND_PROC_ARGS == 3
|
|
ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
|
|
# endif
|
|
#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
|
|
#endif
|
|
|
|
/* When there is an alternative bind callback is set,
|
|
attempt to use it to perform the bind */
|
|
if (ldap_state->bind_callback != NULL) {
|
|
/* We have to allow bind callback to be run under become_root/unbecome_root
|
|
to make sure within smbd the callback has proper write access to its resources,
|
|
like credential cache. This is similar to passdb case where this callback is supposed
|
|
to be used. When used outside smbd, become_root()/unbecome_root() are no-op.
|
|
*/
|
|
become_root();
|
|
rc = ldap_state->bind_callback(ldap_struct, ldap_state, ldap_state->bind_callback_data);
|
|
unbecome_root();
|
|
} else {
|
|
rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
|
|
}
|
|
|
|
if (rc != LDAP_SUCCESS) {
|
|
char *ld_error = NULL;
|
|
ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
|
|
&ld_error);
|
|
DEBUG(ldap_state->num_failures ? 2 : 0,
|
|
("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
|
|
ldap_state->uri,
|
|
ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
|
|
ldap_err2string(rc),
|
|
ld_error ? ld_error : "(unknown)"));
|
|
SAFE_FREE(ld_error);
|
|
ldap_state->num_failures++;
|
|
goto done;
|
|
}
|
|
|
|
ldap_state->num_failures = 0;
|
|
ldap_state->paged_results = False;
|
|
|
|
ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
|
|
|
|
if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
|
|
ldap_state->paged_results = True;
|
|
}
|
|
|
|
DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
|
|
DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
|
|
ldap_state->paged_results ? "does" : "does not"));
|
|
done:
|
|
if (rc != 0) {
|
|
ldap_unbind(ldap_struct);
|
|
ldap_state->ldap_struct = NULL;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static void smbldap_idle_fn(struct tevent_context *tevent_ctx,
|
|
struct tevent_timer *te,
|
|
struct timeval now_abs,
|
|
void *private_data);
|
|
|
|
/**********************************************************************
|
|
Connect to LDAP server (called before every ldap operation)
|
|
*********************************************************************/
|
|
static int smbldap_open(struct smbldap_state *ldap_state)
|
|
{
|
|
int rc, opt_rc;
|
|
bool reopen = False;
|
|
SMB_ASSERT(ldap_state);
|
|
|
|
if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time_mono(NULL))) {
|
|
|
|
#ifdef HAVE_UNIXSOCKET
|
|
struct sockaddr_un addr;
|
|
#else
|
|
struct sockaddr addr;
|
|
#endif
|
|
socklen_t len = sizeof(addr);
|
|
int sd;
|
|
|
|
opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
|
|
if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
|
|
reopen = True;
|
|
|
|
#ifdef HAVE_UNIXSOCKET
|
|
if (opt_rc == 0 && addr.sun_family == AF_UNIX)
|
|
reopen = True;
|
|
#endif
|
|
if (reopen) {
|
|
/* the other end has died. reopen. */
|
|
ldap_unbind(ldap_state->ldap_struct);
|
|
ldap_state->ldap_struct = NULL;
|
|
ldap_state->last_ping = (time_t)0;
|
|
} else {
|
|
ldap_state->last_ping = time_mono(NULL);
|
|
}
|
|
}
|
|
|
|
if (ldap_state->ldap_struct != NULL) {
|
|
DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
if ((rc = smbldap_open_connection(ldap_state))) {
|
|
return rc;
|
|
}
|
|
|
|
if ((rc = smbldap_connect_system(ldap_state))) {
|
|
return rc;
|
|
}
|
|
|
|
|
|
ldap_state->last_ping = time_mono(NULL);
|
|
ldap_state->pid = getpid();
|
|
|
|
TALLOC_FREE(ldap_state->idle_event);
|
|
|
|
if (ldap_state->tevent_context != NULL) {
|
|
ldap_state->idle_event = tevent_add_timer(
|
|
ldap_state->tevent_context, ldap_state,
|
|
timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
|
|
smbldap_idle_fn, ldap_state);
|
|
}
|
|
|
|
DEBUG(4,("The LDAP server is successfully connected\n"));
|
|
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
/**********************************************************************
|
|
Disconnect from LDAP server
|
|
*********************************************************************/
|
|
static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
|
|
{
|
|
if (!ldap_state)
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
|
|
if (ldap_state->ldap_struct != NULL) {
|
|
ldap_unbind(ldap_state->ldap_struct);
|
|
ldap_state->ldap_struct = NULL;
|
|
}
|
|
|
|
smbldap_delete_state(ldap_state);
|
|
|
|
TALLOC_FREE(ldap_state->idle_event);
|
|
|
|
DEBUG(5,("The connection to the LDAP server was closed\n"));
|
|
/* maybe free the results here --metze */
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static SIG_ATOMIC_T got_alarm;
|
|
|
|
static void gotalarm_sig(int dummy)
|
|
{
|
|
got_alarm = 1;
|
|
}
|
|
|
|
static time_t calc_ldap_abs_endtime(int ldap_to)
|
|
{
|
|
if (ldap_to == 0) {
|
|
/* No timeout - don't
|
|
return a value for
|
|
the alarm. */
|
|
return (time_t)0;
|
|
}
|
|
|
|
/* Make the alarm time one second beyond
|
|
the timout we're setting for the
|
|
remote search timeout, to allow that
|
|
to fire in preference. */
|
|
|
|
return time_mono(NULL)+ldap_to+1;
|
|
}
|
|
|
|
static int end_ldap_local_alarm(time_t absolute_endtime, int rc)
|
|
{
|
|
if (absolute_endtime) {
|
|
alarm(0);
|
|
CatchSignal(SIGALRM, SIG_IGN);
|
|
if (got_alarm) {
|
|
/* Client timeout error code. */
|
|
got_alarm = 0;
|
|
return LDAP_TIMEOUT;
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static void setup_ldap_local_alarm(struct smbldap_state *ldap_state, time_t absolute_endtime)
|
|
{
|
|
time_t now = time_mono(NULL);
|
|
|
|
if (absolute_endtime) {
|
|
got_alarm = 0;
|
|
CatchSignal(SIGALRM, gotalarm_sig);
|
|
alarm(absolute_endtime - now);
|
|
}
|
|
|
|
if (ldap_state->pid != getpid()) {
|
|
smbldap_close(ldap_state);
|
|
}
|
|
}
|
|
|
|
static void get_ldap_errs(struct smbldap_state *ldap_state, char **pp_ld_error, int *p_ld_errno)
|
|
{
|
|
ldap_get_option(ldap_state->ldap_struct,
|
|
LDAP_OPT_ERROR_NUMBER, p_ld_errno);
|
|
|
|
ldap_get_option(ldap_state->ldap_struct,
|
|
LDAP_OPT_ERROR_STRING, pp_ld_error);
|
|
}
|
|
|
|
static int get_cached_ldap_connect(struct smbldap_state *ldap_state, time_t abs_endtime)
|
|
{
|
|
int attempts = 0;
|
|
|
|
while (1) {
|
|
int rc;
|
|
time_t now;
|
|
|
|
now = time_mono(NULL);
|
|
ldap_state->last_use = now;
|
|
|
|
if (abs_endtime && now > abs_endtime) {
|
|
smbldap_close(ldap_state);
|
|
return LDAP_TIMEOUT;
|
|
}
|
|
|
|
rc = smbldap_open(ldap_state);
|
|
|
|
if (rc == LDAP_SUCCESS) {
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
attempts++;
|
|
DEBUG(1, ("Connection to LDAP server failed for the "
|
|
"%d try!\n", attempts));
|
|
|
|
if (rc == LDAP_INSUFFICIENT_ACCESS) {
|
|
/* The fact that we are non-root or any other
|
|
* access-denied condition will not change in the next
|
|
* round of trying */
|
|
return rc;
|
|
}
|
|
|
|
if (got_alarm) {
|
|
smbldap_close(ldap_state);
|
|
return LDAP_TIMEOUT;
|
|
}
|
|
|
|
smb_msleep(1000);
|
|
|
|
if (got_alarm) {
|
|
smbldap_close(ldap_state);
|
|
return LDAP_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*********************************************************************
|
|
********************************************************************/
|
|
|
|
static int smbldap_search_ext(struct smbldap_state *ldap_state,
|
|
const char *base, int scope, const char *filter,
|
|
const char *attrs[], int attrsonly,
|
|
LDAPControl **sctrls, LDAPControl **cctrls,
|
|
int sizelimit, LDAPMessage **res)
|
|
{
|
|
int rc = LDAP_SERVER_DOWN;
|
|
char *utf8_filter;
|
|
int to = lp_ldap_timeout();
|
|
time_t abs_endtime = calc_ldap_abs_endtime(to);
|
|
struct timeval timeout;
|
|
struct timeval *timeout_ptr = NULL;
|
|
size_t converted_size;
|
|
|
|
SMB_ASSERT(ldap_state);
|
|
|
|
DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
|
|
"scope => [%d]\n", base, filter, scope));
|
|
|
|
if (ldap_state->last_rebind.tv_sec > 0) {
|
|
struct timeval tval;
|
|
struct timespec ts;
|
|
int64_t tdiff = 0;
|
|
int sleep_time = 0;
|
|
|
|
clock_gettime_mono(&ts);
|
|
tval = convert_timespec_to_timeval(ts);
|
|
|
|
tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
|
|
tdiff /= 1000; /* Convert to milliseconds. */
|
|
|
|
sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
|
|
sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
|
|
|
|
if (sleep_time > 0) {
|
|
/* we wait for the LDAP replication */
|
|
DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
|
|
"for LDAP replication.\n",sleep_time));
|
|
smb_msleep(sleep_time);
|
|
DEBUG(5,("smbldap_search_ext: go on!\n"));
|
|
}
|
|
ZERO_STRUCT(ldap_state->last_rebind);
|
|
}
|
|
|
|
if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
|
|
return LDAP_NO_MEMORY;
|
|
}
|
|
|
|
/* Setup remote timeout for the ldap_search_ext_s call. */
|
|
if (to) {
|
|
timeout.tv_sec = to;
|
|
timeout.tv_usec = 0;
|
|
timeout_ptr = &timeout;
|
|
}
|
|
|
|
setup_ldap_local_alarm(ldap_state, abs_endtime);
|
|
|
|
while (1) {
|
|
char *ld_error = NULL;
|
|
int ld_errno;
|
|
|
|
rc = get_cached_ldap_connect(ldap_state, abs_endtime);
|
|
if (rc != LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
|
|
utf8_filter,
|
|
discard_const_p(char *, attrs),
|
|
attrsonly, sctrls, cctrls, timeout_ptr,
|
|
sizelimit, res);
|
|
if (rc == LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
get_ldap_errs(ldap_state, &ld_error, &ld_errno);
|
|
|
|
DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
|
|
"(%s)\n", base, ld_errno,
|
|
ldap_err2string(rc),
|
|
ld_error ? ld_error : "unknown"));
|
|
SAFE_FREE(ld_error);
|
|
|
|
if (ld_errno != LDAP_SERVER_DOWN) {
|
|
break;
|
|
}
|
|
ldap_unbind(ldap_state->ldap_struct);
|
|
ldap_state->ldap_struct = NULL;
|
|
}
|
|
|
|
TALLOC_FREE(utf8_filter);
|
|
return end_ldap_local_alarm(abs_endtime, rc);
|
|
}
|
|
|
|
int smbldap_search(struct smbldap_state *ldap_state,
|
|
const char *base, int scope, const char *filter,
|
|
const char *attrs[], int attrsonly,
|
|
LDAPMessage **res)
|
|
{
|
|
return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
|
|
attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
|
|
}
|
|
|
|
int smbldap_search_paged(struct smbldap_state *ldap_state,
|
|
const char *base, int scope, const char *filter,
|
|
const char **attrs, int attrsonly, int pagesize,
|
|
LDAPMessage **res, void **cookie)
|
|
{
|
|
LDAPControl pr;
|
|
LDAPControl **rcontrols;
|
|
LDAPControl *controls[2] = { NULL, NULL};
|
|
BerElement *cookie_be = NULL;
|
|
struct berval *cookie_bv = NULL;
|
|
int tmp = 0, i, rc;
|
|
bool critical = True;
|
|
|
|
*res = NULL;
|
|
|
|
DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
|
|
"scope => [%d], pagesize => [%d]\n",
|
|
base, filter, scope, pagesize));
|
|
|
|
cookie_be = ber_alloc_t(LBER_USE_DER);
|
|
if (cookie_be == NULL) {
|
|
DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
|
|
"NULL\n"));
|
|
return LDAP_NO_MEMORY;
|
|
}
|
|
|
|
/* construct cookie */
|
|
if (*cookie != NULL) {
|
|
ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
|
|
ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
|
|
*cookie = NULL;
|
|
} else {
|
|
ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
|
|
}
|
|
ber_flatten(cookie_be, &cookie_bv);
|
|
|
|
pr.ldctl_oid = discard_const_p(char, ADS_PAGE_CTL_OID);
|
|
pr.ldctl_iscritical = (char) critical;
|
|
pr.ldctl_value.bv_len = cookie_bv->bv_len;
|
|
pr.ldctl_value.bv_val = cookie_bv->bv_val;
|
|
|
|
controls[0] = ≺
|
|
controls[1] = NULL;
|
|
|
|
rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
|
|
0, controls, NULL, LDAP_NO_LIMIT, res);
|
|
|
|
ber_free(cookie_be, 1);
|
|
ber_bvfree(cookie_bv);
|
|
|
|
if (rc != 0) {
|
|
DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
|
|
"failed with [%s]\n", filter, ldap_err2string(rc)));
|
|
goto done;
|
|
}
|
|
|
|
DEBUG(3,("smbldap_search_paged: search was successful\n"));
|
|
|
|
rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
|
|
NULL, NULL, &rcontrols, 0);
|
|
if (rc != 0) {
|
|
DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
|
|
"with [%s]\n", ldap_err2string(rc)));
|
|
goto done;
|
|
}
|
|
|
|
if (rcontrols == NULL)
|
|
goto done;
|
|
|
|
for (i=0; rcontrols[i]; i++) {
|
|
|
|
if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
|
|
continue;
|
|
|
|
cookie_be = ber_init(&rcontrols[i]->ldctl_value);
|
|
ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
|
|
/* the berval is the cookie, but must be freed when it is all
|
|
done */
|
|
if (cookie_bv->bv_len)
|
|
*cookie=ber_bvdup(cookie_bv);
|
|
else
|
|
*cookie=NULL;
|
|
ber_bvfree(cookie_bv);
|
|
ber_free(cookie_be, 1);
|
|
break;
|
|
}
|
|
ldap_controls_free(rcontrols);
|
|
done:
|
|
return rc;
|
|
}
|
|
|
|
int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
|
|
{
|
|
int rc = LDAP_SERVER_DOWN;
|
|
char *utf8_dn;
|
|
time_t abs_endtime = calc_ldap_abs_endtime(lp_ldap_timeout());
|
|
size_t converted_size;
|
|
|
|
SMB_ASSERT(ldap_state);
|
|
|
|
DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
|
|
|
|
if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
|
|
return LDAP_NO_MEMORY;
|
|
}
|
|
|
|
setup_ldap_local_alarm(ldap_state, abs_endtime);
|
|
|
|
while (1) {
|
|
char *ld_error = NULL;
|
|
int ld_errno;
|
|
|
|
rc = get_cached_ldap_connect(ldap_state, abs_endtime);
|
|
if (rc != LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
|
|
if (rc == LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
get_ldap_errs(ldap_state, &ld_error, &ld_errno);
|
|
|
|
DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
|
|
"(%s)\n", dn, ld_errno,
|
|
ldap_err2string(rc),
|
|
ld_error ? ld_error : "unknown"));
|
|
SAFE_FREE(ld_error);
|
|
|
|
if (ld_errno != LDAP_SERVER_DOWN) {
|
|
break;
|
|
}
|
|
ldap_unbind(ldap_state->ldap_struct);
|
|
ldap_state->ldap_struct = NULL;
|
|
}
|
|
|
|
TALLOC_FREE(utf8_dn);
|
|
return end_ldap_local_alarm(abs_endtime, rc);
|
|
}
|
|
|
|
int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
|
|
{
|
|
int rc = LDAP_SERVER_DOWN;
|
|
char *utf8_dn;
|
|
time_t abs_endtime = calc_ldap_abs_endtime(lp_ldap_timeout());
|
|
size_t converted_size;
|
|
|
|
SMB_ASSERT(ldap_state);
|
|
|
|
DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
|
|
|
|
if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
|
|
return LDAP_NO_MEMORY;
|
|
}
|
|
|
|
setup_ldap_local_alarm(ldap_state, abs_endtime);
|
|
|
|
while (1) {
|
|
char *ld_error = NULL;
|
|
int ld_errno;
|
|
|
|
rc = get_cached_ldap_connect(ldap_state, abs_endtime);
|
|
if (rc != LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
|
|
if (rc == LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
get_ldap_errs(ldap_state, &ld_error, &ld_errno);
|
|
|
|
DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
|
|
"(%s)\n", dn, ld_errno,
|
|
ldap_err2string(rc),
|
|
ld_error ? ld_error : "unknown"));
|
|
SAFE_FREE(ld_error);
|
|
|
|
if (ld_errno != LDAP_SERVER_DOWN) {
|
|
break;
|
|
}
|
|
ldap_unbind(ldap_state->ldap_struct);
|
|
ldap_state->ldap_struct = NULL;
|
|
}
|
|
|
|
TALLOC_FREE(utf8_dn);
|
|
return end_ldap_local_alarm(abs_endtime, rc);
|
|
}
|
|
|
|
int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
|
|
{
|
|
int rc = LDAP_SERVER_DOWN;
|
|
char *utf8_dn;
|
|
time_t abs_endtime = calc_ldap_abs_endtime(lp_ldap_timeout());
|
|
size_t converted_size;
|
|
|
|
SMB_ASSERT(ldap_state);
|
|
|
|
DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
|
|
|
|
if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
|
|
return LDAP_NO_MEMORY;
|
|
}
|
|
|
|
setup_ldap_local_alarm(ldap_state, abs_endtime);
|
|
|
|
while (1) {
|
|
char *ld_error = NULL;
|
|
int ld_errno;
|
|
|
|
rc = get_cached_ldap_connect(ldap_state, abs_endtime);
|
|
if (rc != LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
|
|
if (rc == LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
get_ldap_errs(ldap_state, &ld_error, &ld_errno);
|
|
|
|
DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
|
|
"(%s)\n", dn, ld_errno,
|
|
ldap_err2string(rc),
|
|
ld_error ? ld_error : "unknown"));
|
|
SAFE_FREE(ld_error);
|
|
|
|
if (ld_errno != LDAP_SERVER_DOWN) {
|
|
break;
|
|
}
|
|
ldap_unbind(ldap_state->ldap_struct);
|
|
ldap_state->ldap_struct = NULL;
|
|
}
|
|
|
|
TALLOC_FREE(utf8_dn);
|
|
return end_ldap_local_alarm(abs_endtime, rc);
|
|
}
|
|
|
|
int smbldap_extended_operation(struct smbldap_state *ldap_state,
|
|
LDAP_CONST char *reqoid, struct berval *reqdata,
|
|
LDAPControl **serverctrls, LDAPControl **clientctrls,
|
|
char **retoidp, struct berval **retdatap)
|
|
{
|
|
int rc = LDAP_SERVER_DOWN;
|
|
time_t abs_endtime = calc_ldap_abs_endtime(lp_ldap_timeout());
|
|
|
|
if (!ldap_state)
|
|
return (-1);
|
|
|
|
setup_ldap_local_alarm(ldap_state, abs_endtime);
|
|
|
|
while (1) {
|
|
char *ld_error = NULL;
|
|
int ld_errno;
|
|
|
|
rc = get_cached_ldap_connect(ldap_state, abs_endtime);
|
|
if (rc != LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
|
|
reqdata, serverctrls,
|
|
clientctrls, retoidp, retdatap);
|
|
if (rc == LDAP_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
get_ldap_errs(ldap_state, &ld_error, &ld_errno);
|
|
|
|
DEBUG(10, ("Extended operation failed with error: "
|
|
"%d (%s) (%s)\n", ld_errno,
|
|
ldap_err2string(rc),
|
|
ld_error ? ld_error : "unknown"));
|
|
SAFE_FREE(ld_error);
|
|
|
|
if (ld_errno != LDAP_SERVER_DOWN) {
|
|
break;
|
|
}
|
|
ldap_unbind(ldap_state->ldap_struct);
|
|
ldap_state->ldap_struct = NULL;
|
|
}
|
|
|
|
return end_ldap_local_alarm(abs_endtime, rc);
|
|
}
|
|
|
|
/*******************************************************************
|
|
run the search by name.
|
|
******************************************************************/
|
|
int smbldap_search_suffix (struct smbldap_state *ldap_state,
|
|
const char *filter, const char **search_attr,
|
|
LDAPMessage ** result)
|
|
{
|
|
return smbldap_search(ldap_state, lp_ldap_suffix(talloc_tos()),
|
|
LDAP_SCOPE_SUBTREE,
|
|
filter, search_attr, 0, result);
|
|
}
|
|
|
|
static void smbldap_idle_fn(struct tevent_context *tevent_ctx,
|
|
struct tevent_timer *te,
|
|
struct timeval now_abs,
|
|
void *private_data)
|
|
{
|
|
struct smbldap_state *state = (struct smbldap_state *)private_data;
|
|
|
|
TALLOC_FREE(state->idle_event);
|
|
|
|
if (state->ldap_struct == NULL) {
|
|
DEBUG(10,("ldap connection not connected...\n"));
|
|
return;
|
|
}
|
|
|
|
if ((state->last_use+SMBLDAP_IDLE_TIME) > time_mono(NULL)) {
|
|
DEBUG(10,("ldap connection not idle...\n"));
|
|
|
|
/* this needs to be made monotonic clock aware inside tevent: */
|
|
state->idle_event = tevent_add_timer(
|
|
tevent_ctx, state,
|
|
timeval_add(&now_abs, SMBLDAP_IDLE_TIME, 0),
|
|
smbldap_idle_fn,
|
|
private_data);
|
|
return;
|
|
}
|
|
|
|
DEBUG(7,("ldap connection idle...closing connection\n"));
|
|
smbldap_close(state);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Housekeeping
|
|
*********************************************************************/
|
|
|
|
void smbldap_free_struct(struct smbldap_state **ldap_state)
|
|
{
|
|
smbldap_close(*ldap_state);
|
|
|
|
if ((*ldap_state)->bind_secret) {
|
|
memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
|
|
}
|
|
|
|
SAFE_FREE((*ldap_state)->bind_dn);
|
|
SAFE_FREE((*ldap_state)->bind_secret);
|
|
(*ldap_state)->bind_callback = NULL;
|
|
(*ldap_state)->bind_callback_data = NULL;
|
|
|
|
TALLOC_FREE(*ldap_state);
|
|
|
|
/* No need to free any further, as it is talloc()ed */
|
|
}
|
|
|
|
static int smbldap_state_destructor(struct smbldap_state *state)
|
|
{
|
|
smbldap_free_struct(&state);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
Intitalise the 'general' ldap structures, on which ldap operations may be conducted
|
|
*********************************************************************/
|
|
|
|
NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct tevent_context *tevent_ctx,
|
|
const char *location,
|
|
bool anon,
|
|
const char *bind_dn,
|
|
const char *bind_secret,
|
|
struct smbldap_state **smbldap_state)
|
|
{
|
|
*smbldap_state = talloc_zero(mem_ctx, struct smbldap_state);
|
|
if (!*smbldap_state) {
|
|
DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (location) {
|
|
(*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
|
|
} else {
|
|
(*smbldap_state)->uri = "ldap://localhost";
|
|
}
|
|
|
|
(*smbldap_state)->tevent_context = tevent_ctx;
|
|
|
|
if (bind_dn && bind_secret) {
|
|
smbldap_set_creds(*smbldap_state, anon, bind_dn, bind_secret);
|
|
}
|
|
|
|
talloc_set_destructor(*smbldap_state, smbldap_state_destructor);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
|
|
LDAPMessage *entry)
|
|
{
|
|
char *utf8_dn, *unix_dn;
|
|
size_t converted_size;
|
|
|
|
utf8_dn = ldap_get_dn(ld, entry);
|
|
if (!utf8_dn) {
|
|
DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
|
|
return NULL;
|
|
}
|
|
if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
|
|
DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
|
|
"[%s]\n", utf8_dn));
|
|
return NULL;
|
|
}
|
|
ldap_memfree(utf8_dn);
|
|
return unix_dn;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Check if root-dse has a certain Control or Extension
|
|
********************************************************************/
|
|
|
|
static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
|
|
{
|
|
LDAPMessage *msg = NULL;
|
|
LDAPMessage *entry = NULL;
|
|
char **values = NULL;
|
|
int rc, num_result, num_values, i;
|
|
bool result = False;
|
|
|
|
if (!attrs[0]) {
|
|
DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
|
|
return False;
|
|
}
|
|
|
|
if (!strequal(attrs[0], "supportedExtension") &&
|
|
!strequal(attrs[0], "supportedControl") &&
|
|
!strequal(attrs[0], "namingContexts")) {
|
|
DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
|
|
return False;
|
|
}
|
|
|
|
rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
|
|
"(objectclass=*)", discard_const_p(char *, attrs), 0 , &msg);
|
|
|
|
if (rc != LDAP_SUCCESS) {
|
|
DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
|
|
return False;
|
|
}
|
|
|
|
num_result = ldap_count_entries(ld, msg);
|
|
|
|
if (num_result != 1) {
|
|
DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
|
|
goto done;
|
|
}
|
|
|
|
entry = ldap_first_entry(ld, msg);
|
|
|
|
if (entry == NULL) {
|
|
DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
|
|
goto done;
|
|
}
|
|
|
|
values = ldap_get_values(ld, entry, attrs[0]);
|
|
|
|
if (values == NULL) {
|
|
DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
|
|
goto done;
|
|
}
|
|
|
|
num_values = ldap_count_values(values);
|
|
|
|
if (num_values == 0) {
|
|
DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
|
|
goto done;
|
|
}
|
|
|
|
for (i=0; i<num_values; i++) {
|
|
if (strcmp(values[i], value) == 0)
|
|
result = True;
|
|
}
|
|
|
|
|
|
done:
|
|
if (values != NULL)
|
|
ldap_value_free(values);
|
|
if (msg != NULL)
|
|
ldap_msgfree(msg);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
/*******************************************************************
|
|
Check if LDAP-Server supports a certain Control (OID in string format)
|
|
********************************************************************/
|
|
|
|
bool smbldap_has_control(LDAP *ld, const char *control)
|
|
{
|
|
const char *attrs[] = { "supportedControl", NULL };
|
|
return smbldap_check_root_dse(ld, attrs, control);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Check if LDAP-Server supports a certain Extension (OID in string format)
|
|
********************************************************************/
|
|
|
|
bool smbldap_has_extension(LDAP *ld, const char *extension)
|
|
{
|
|
const char *attrs[] = { "supportedExtension", NULL };
|
|
return smbldap_check_root_dse(ld, attrs, extension);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Check if LDAP-Server holds a given namingContext
|
|
********************************************************************/
|
|
|
|
bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
|
|
{
|
|
const char *attrs[] = { "namingContexts", NULL };
|
|
return smbldap_check_root_dse(ld, attrs, naming_context);
|
|
}
|
|
|
|
bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
|
|
{
|
|
ldap_state->anonymous = anon;
|
|
|
|
/* free any previously set credential */
|
|
|
|
SAFE_FREE(ldap_state->bind_dn);
|
|
ldap_state->bind_callback = NULL;
|
|
ldap_state->bind_callback_data = NULL;
|
|
|
|
if (ldap_state->bind_secret) {
|
|
/* make sure secrets are zeroed out of memory */
|
|
memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
|
|
SAFE_FREE(ldap_state->bind_secret);
|
|
}
|
|
|
|
if ( ! anon) {
|
|
ldap_state->bind_dn = SMB_STRDUP(dn);
|
|
ldap_state->bind_secret = SMB_STRDUP(secret);
|
|
}
|
|
|
|
return True;
|
|
}
|