/*
Unix SMB/CIFS implementation.
LDAP protocol helper functions for SAMBA
Copyright (C) Jean François Micouleau 1998
Copyright (C) Gerald Carter 2001-2003
Copyright (C) Shahms King 2001
Copyright (C) Andrew Bartlett 2002-2003
Copyright (C) Stefan (metze) Metzmacher 2002-2003
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
*/
#include "includes.h"
#include "smbldap.h"
#ifndef LDAP_OPT_SUCCESS
#define LDAP_OPT_SUCCESS 0
#endif
/* Try not to hit the up or down server forever */
#define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
#define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
#define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
/* attributes used by Samba 2.2 */
ATTRIB_MAP_ENTRY attrib_map_v22[] = {
{ LDAP_ATTR_UID, "uid" },
{ LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
{ LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
{ LDAP_ATTR_UNIX_HOME, "homeDirectory" },
{ LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
{ LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
{ LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
{ LDAP_ATTR_LOGON_TIME, "logonTime" },
{ LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
{ LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
{ LDAP_ATTR_CN, "cn" },
{ LDAP_ATTR_SN, "sn" },
{ LDAP_ATTR_DISPLAY_NAME, "displayName" },
{ LDAP_ATTR_HOME_PATH, "smbHome" },
{ LDAP_ATTR_HOME_DRIVE, "homeDrive" },
{ LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
{ LDAP_ATTR_PROFILE_PATH, "profilePath" },
{ LDAP_ATTR_DESC, "description" },
{ LDAP_ATTR_USER_WKS, "userWorkstations"},
{ LDAP_ATTR_USER_RID, "rid" },
{ LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
{ LDAP_ATTR_LMPW, "lmPassword" },
{ LDAP_ATTR_NTPW, "ntPassword" },
{ LDAP_ATTR_DOMAIN, "domain" },
{ LDAP_ATTR_OBJCLASS, "objectClass" },
{ LDAP_ATTR_ACB_INFO, "acctFlags" },
{ LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
{ LDAP_ATTR_LIST_END, NULL }
};
ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
{ LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
{ LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
{ LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
{ LDAP_ATTR_LOGON_TIME, "logonTime" },
{ LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
{ LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
{ LDAP_ATTR_DISPLAY_NAME, "displayName" },
{ LDAP_ATTR_HOME_PATH, "smbHome" },
{ LDAP_ATTR_HOME_DRIVE, "homeDrives" },
{ LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
{ LDAP_ATTR_PROFILE_PATH, "profilePath" },
{ LDAP_ATTR_USER_WKS, "userWorkstations"},
{ LDAP_ATTR_USER_RID, "rid" },
{ LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
{ LDAP_ATTR_LMPW, "lmPassword" },
{ LDAP_ATTR_NTPW, "ntPassword" },
{ LDAP_ATTR_DOMAIN, "domain" },
{ LDAP_ATTR_ACB_INFO, "acctFlags" },
{ LDAP_ATTR_LIST_END, NULL }
};
/* attributes used by Samba 3.0's sambaSamAccount */
ATTRIB_MAP_ENTRY attrib_map_v30[] = {
{ LDAP_ATTR_UID, "uid" },
{ LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
{ LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
{ LDAP_ATTR_UNIX_HOME, "homeDirectory" },
{ LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
{ LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
{ LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
{ LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
{ LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
{ LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
{ LDAP_ATTR_CN, "cn" },
{ LDAP_ATTR_SN, "sn" },
{ LDAP_ATTR_DISPLAY_NAME, "displayName" },
{ LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
{ LDAP_ATTR_HOME_PATH, "sambaHomePath" },
{ LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
{ LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
{ LDAP_ATTR_DESC, "description" },
{ LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
{ LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
{ LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
{ LDAP_ATTR_LMPW, "sambaLMPassword" },
{ LDAP_ATTR_NTPW, "sambaNTPassword" },
{ LDAP_ATTR_DOMAIN, "sambaDomainName" },
{ LDAP_ATTR_OBJCLASS, "objectClass" },
{ LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
{ LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
{ LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
{ LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
{ LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
{ LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
{ LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
{ LDAP_ATTR_LIST_END, NULL }
};
ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
{ LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
{ LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
{ LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
{ LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
{ LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
{ LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
{ LDAP_ATTR_DISPLAY_NAME, "displayName" },
{ LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
{ LDAP_ATTR_HOME_PATH, "sambaHomePath" },
{ LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
{ LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
{ LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
{ LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
{ LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
{ LDAP_ATTR_LMPW, "sambaLMPassword" },
{ LDAP_ATTR_NTPW, "sambaNTPassword" },
{ LDAP_ATTR_DOMAIN, "sambaDomainName" },
{ LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
{ LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
{ LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
{ LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
{ LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
{ LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
{ LDAP_ATTR_LIST_END, NULL }
};
/* attributes used for allocating RIDs */
ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
{ LDAP_ATTR_DOMAIN, "sambaDomainName" },
{ LDAP_ATTR_NEXT_RID, "sambaNextRid" },
{ LDAP_ATTR_NEXT_USERRID, "sambaNextUserRid" },
{ LDAP_ATTR_NEXT_GROUPRID, "sambaNextGroupRid" },
{ LDAP_ATTR_DOM_SID, LDAP_ATTRIBUTE_SID },
{ LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
{ LDAP_ATTR_OBJCLASS, "objectClass" },
{ LDAP_ATTR_LIST_END, NULL },
};
/* Samba 3.0 group mapping attributes */
ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
{ LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
{ LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
{ LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
{ LDAP_ATTR_SID_LIST, "sambaSIDList" },
{ LDAP_ATTR_DESC, "description" },
{ LDAP_ATTR_DISPLAY_NAME, "displayName" },
{ LDAP_ATTR_CN, "cn" },
{ LDAP_ATTR_OBJCLASS, "objectClass" },
{ LDAP_ATTR_LIST_END, NULL }
};
ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
{ LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
{ LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
{ LDAP_ATTR_DESC, "description" },
{ LDAP_ATTR_DISPLAY_NAME, "displayName" },
{ LDAP_ATTR_SID_LIST, "sambaSIDList" },
{ LDAP_ATTR_LIST_END, NULL }
};
/* idmap_ldap sambaUnixIdPool */
ATTRIB_MAP_ENTRY idpool_attr_list[] = {
{ LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
{ LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
{ LDAP_ATTR_OBJCLASS, "objectClass" },
{ LDAP_ATTR_LIST_END, NULL }
};
ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
{ LDAP_ATTR_SID, LDAP_ATTRIBUTE_SID },
{ LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
{ LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
{ LDAP_ATTR_OBJCLASS, "objectClass" },
{ LDAP_ATTR_LIST_END, NULL }
};
/**********************************************************************
perform a simple table lookup and return the attribute name
**********************************************************************/
const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
{
int i = 0;
while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
if ( table[i].attrib == key )
return table[i].name;
i++;
}
return NULL;
}
/**********************************************************************
Return the list of attribute names from a mapping table
**********************************************************************/
const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
{
const char **names;
int i = 0;
while ( table[i].attrib != LDAP_ATTR_LIST_END )
i++;
i++;
names = TALLOC_ARRAY( mem_ctx, const char*, i );
if ( !names ) {
DEBUG(0,("get_attr_list: out of memory\n"));
return NULL;
}
i = 0;
while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
names[i] = talloc_strdup( names, table[i].name );
i++;
}
names[i] = NULL;
return names;
}
/*******************************************************************
Search an attribute and return the first value found.
******************************************************************/
bool smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
const char *attribute, char *value,
int max_len)
{
char **values;
if ( !attribute )
return False;
value[0] = '\0';
if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
DEBUG (10, ("smbldap_get_single_attribute: [%s] = []\n", attribute));
return False;
}
if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
attribute, values[0]));
ldap_value_free(values);
return False;
}
ldap_value_free(values);
#ifdef DEBUG_PASSWORDS
DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
#endif
return True;
}
char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
const char *attribute,
TALLOC_CTX *mem_ctx)
{
char **values;
char *result;
if (attribute == NULL) {
return NULL;
}
values = ldap_get_values(ldap_struct, entry, attribute);
if (values == NULL) {
DEBUG(10, ("attribute %s does not exist\n", attribute));
return NULL;
}
if (ldap_count_values(values) != 1) {
DEBUG(10, ("attribute %s has %d values, expected only one\n",
attribute, ldap_count_values(values)));
ldap_value_free(values);
return NULL;
}
if (pull_utf8_talloc(mem_ctx, &result, values[0]) == (size_t)-1) {
DEBUG(10, ("pull_utf8_talloc failed\n"));
ldap_value_free(values);
return NULL;
}
ldap_value_free(values);
#ifdef DEBUG_PASSWORDS
DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
attribute, result));
#endif
return result;
}
static int ldapmsg_destructor(LDAPMessage **result) {
ldap_msgfree(*result);
return 0;
}
void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
{
LDAPMessage **handle;
if (result == NULL) {
return;
}
handle = TALLOC_P(mem_ctx, LDAPMessage *);
SMB_ASSERT(handle != NULL);
*handle = result;
talloc_set_destructor(handle, ldapmsg_destructor);
}
static int ldapmod_destructor(LDAPMod ***mod) {
ldap_mods_free(*mod, True);
return 0;
}
void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
{
LDAPMod ***handle;
if (mod == NULL) {
return;
}
handle = TALLOC_P(mem_ctx, LDAPMod **);
SMB_ASSERT(handle != NULL);
*handle = mod;
talloc_set_destructor(handle, ldapmod_destructor);
}
/************************************************************************
Routine to manage the LDAPMod structure array
manage memory used by the array, by each struct, and values
***********************************************************************/
void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
{
LDAPMod **mods;
int i;
int j;
mods = *modlist;
/* sanity checks on the mod values */
if (attribute == NULL || *attribute == '\0') {
return;
}
#if 0 /* commented out after discussion with abartlet. Do not reenable.
left here so other do not re-add similar code --jerry */
if (value == NULL || *value == '\0')
return;
#endif
if (mods == NULL) {
mods = SMB_MALLOC_P(LDAPMod *);
if (mods == NULL) {
smb_panic("smbldap_set_mod: out of memory!");
/* notreached. */
}
mods[0] = NULL;
}
for (i = 0; mods[i] != NULL; ++i) {
if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
break;
}
if (mods[i] == NULL) {
mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
if (mods == NULL) {
smb_panic("smbldap_set_mod: out of memory!");
/* notreached. */
}
mods[i] = SMB_MALLOC_P(LDAPMod);
if (mods[i] == NULL) {
smb_panic("smbldap_set_mod: out of memory!");
/* notreached. */
}
mods[i]->mod_op = modop;
mods[i]->mod_values = NULL;
mods[i]->mod_type = SMB_STRDUP(attribute);
mods[i + 1] = NULL;
}
if (value != NULL) {
char *utf8_value = NULL;
j = 0;
if (mods[i]->mod_values != NULL) {
for (; mods[i]->mod_values[j] != NULL; j++);
}
mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
if (mods[i]->mod_values == NULL) {
smb_panic("smbldap_set_mod: out of memory!");
/* notreached. */
}
if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
smb_panic("smbldap_set_mod: String conversion failure!");
/* notreached. */
}
mods[i]->mod_values[j] = utf8_value;
mods[i]->mod_values[j + 1] = NULL;
}
*modlist = mods;
}
/**********************************************************************
Set attribute to newval in LDAP, regardless of what value the
attribute had in LDAP before.
*********************************************************************/
void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
LDAPMod ***mods,
const char *attribute, const char *newval)
{
char oldval[2048]; /* current largest allowed value is mungeddial */
bool existed;
if (attribute == NULL) {
/* This can actually happen for ldapsam_compat where we for
* example don't have a password history */
return;
}
if (existing != NULL) {
existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
} else {
existed = False;
*oldval = '\0';
}
/* all of our string attributes are case insensitive */
if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
/* Believe it or not, but LDAP will deny a delete and
an add at the same time if the values are the
same... */
DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
return;
}
if (existed) {
/* There has been no value before, so don't delete it.
* Here's a possible race: We might end up with
* duplicate attributes */
/* By deleting exactly the value we found in the entry this
* should be race-free in the sense that the LDAP-Server will
* deny the complete operation if somebody changed the
* attribute behind our back. */
/* This will also allow modifying single valued attributes
* in Novell NDS. In NDS you have to first remove attribute and then
* you could add new value */
DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
}
/* Regardless of the real operation (add or modify)
we add the new value here. We rely on deleting
the old value, should it exist. */
if ((newval != NULL) && (strlen(newval) > 0)) {
DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
}
}
/**********************************************************************
Some varients of the LDAP rebind code do not pass in the third 'arg'
pointer to a void*, so we try and work around it by assuming that the
value of the 'LDAP *' pointer is the same as the one we had passed in
**********************************************************************/
struct smbldap_state_lookup {
LDAP *ld;
struct smbldap_state *smbldap_state;
struct smbldap_state_lookup *prev, *next;
};
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 smb_ldap_start_tls(LDAP *ldap_struct, int version)
{
int rc;
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
*******************************************************************/
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;
#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 */
return LDAP_SUCCESS;
}
/********************************************************************
try to upgrade to Version 3 LDAP if not already, in either case return current
version
*******************************************************************/
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 smb_ldap_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 = smb_ldap_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;
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 = smb_ldap_start_tls(*ldap_struct, version);
if (rc) {
return rc;
}
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;
/** @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;
}
GetTimeOfDay(&ldap_state->last_rebind);
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;
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);
smb_ldap_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));
GetTimeOfDay(&ldap_state->last_rebind);
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)
{
int rc;
int version;
if (!ldap_state->anonymous && !ldap_state->bind_dn) {
/* get the default dn and password only if they are not set already */
if (!fetch_ldap_pw(&ldap_state->bind_dn, &ldap_state->bind_secret)) {
DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
return LDAP_INVALID_CREDENTIALS;
}
}
/* 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
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++;
return rc;
}
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: succesful 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"));
return rc;
}
static void smbldap_idle_fn(struct event_context *event_ctx,
struct timed_event *te,
const struct timeval *now,
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);
#ifndef NO_LDAP_SECURITY
if (geteuid() != 0) {
DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
return LDAP_INSUFFICIENT_ACCESS;
}
#endif
if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(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(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, ldap_state->ldap_struct))) {
ldap_unbind(ldap_state->ldap_struct);
ldap_state->ldap_struct = NULL;
return rc;
}
ldap_state->last_ping = time(NULL);
ldap_state->pid = sys_getpid();
TALLOC_FREE(ldap_state->idle_event);
if (ldap_state->event_context != NULL) {
ldap_state->idle_event = event_add_timed(
ldap_state->event_context, NULL,
timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
"smbldap_idle_fn", smbldap_idle_fn, ldap_state);
}
DEBUG(4,("The LDAP server is succesfully 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);
DEBUG(5,("The connection to the LDAP server was closed\n"));
/* maybe free the results here --metze */
return NT_STATUS_OK;
}
static bool got_alarm;
static void (*old_handler)(int);
static void gotalarm_sig(int dummy)
{
got_alarm = True;
}
static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
int *attempts, time_t endtime)
{
time_t now = time(NULL);
int open_rc = LDAP_SERVER_DOWN;
if (*rc != LDAP_SERVER_DOWN)
goto no_next;
if (now >= endtime) {
smbldap_close(ldap_state);
*rc = LDAP_TIMEOUT;
goto no_next;
}
if (*attempts == 0) {
got_alarm = False;
old_handler = CatchSignal(SIGALRM, gotalarm_sig);
alarm(endtime - now);
if (ldap_state->pid != sys_getpid())
smbldap_close(ldap_state);
}
while (1) {
if (*attempts != 0)
smb_msleep(1000);
*attempts += 1;
open_rc = smbldap_open(ldap_state);
if (open_rc == LDAP_SUCCESS) {
ldap_state->last_use = now;
return True;
}
if (open_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 */
*rc = open_rc;
break;
}
if (got_alarm) {
*rc = LDAP_TIMEOUT;
break;
}
if (open_rc != LDAP_SUCCESS) {
DEBUG(1, ("Connection to LDAP server failed for the "
"%d try!\n", *attempts));
}
}
no_next:
CatchSignal(SIGALRM, old_handler);
alarm(0);
ldap_state->last_use = now;
return False;
}
/*********************************************************************
********************************************************************/
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;
int attempts = 0;
char *utf8_filter;
time_t endtime = time(NULL)+lp_ldap_timeout();
struct timeval timeout;
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;
SMB_BIG_INT tdiff = 0;
int sleep_time = 0;
ZERO_STRUCT(tval);
GetTimeOfDay(&tval);
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_allocate(&utf8_filter, filter) == (size_t)-1) {
return LDAP_NO_MEMORY;
}
/* Setup timeout for the ldap_search_ext_s call - local and remote. */
timeout.tv_sec = lp_ldap_timeout();
timeout.tv_usec = 0;
/* Setup alarm timeout.... Do we need both of these ? JRA.
* Yes, I think we do need both of these. The server timeout only
* covers the case where the server's operation takes too long. It
* does not cover the case where the request hangs on its way to the
* server. The server side timeout is not strictly necessary, it's
* just a bit more kind to the server. VL. */
got_alarm = 0;
CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
alarm(lp_ldap_timeout());
/* End setup timeout. */
while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
utf8_filter,
CONST_DISCARD(char **, attrs),
attrsonly, sctrls, cctrls, &timeout,
sizelimit, res);
if (rc != LDAP_SUCCESS) {
char *ld_error = NULL;
int ld_errno;
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_NUMBER, &ld_errno);
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_STRING, &ld_error);
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) {
ldap_unbind(ldap_state->ldap_struct);
ldap_state->ldap_struct = NULL;
}
}
}
SAFE_FREE(utf8_filter);
/* Teardown timeout. */
CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
alarm(0);
if (got_alarm != 0)
return LDAP_TIMELIMIT_EXCEEDED;
return 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 = CONST_DISCARD(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 successfull\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;
int attempts = 0;
char *utf8_dn;
time_t endtime = time(NULL)+lp_ldap_timeout();
SMB_ASSERT(ldap_state);
DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
return LDAP_NO_MEMORY;
}
while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
if (rc != LDAP_SUCCESS) {
char *ld_error = NULL;
int ld_errno;
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_NUMBER, &ld_errno);
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_STRING, &ld_error);
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) {
ldap_unbind(ldap_state->ldap_struct);
ldap_state->ldap_struct = NULL;
}
}
}
SAFE_FREE(utf8_dn);
return rc;
}
int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
{
int rc = LDAP_SERVER_DOWN;
int attempts = 0;
char *utf8_dn;
time_t endtime = time(NULL)+lp_ldap_timeout();
SMB_ASSERT(ldap_state);
DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
return LDAP_NO_MEMORY;
}
while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
if (rc != LDAP_SUCCESS) {
char *ld_error = NULL;
int ld_errno;
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_NUMBER, &ld_errno);
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_STRING, &ld_error);
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) {
ldap_unbind(ldap_state->ldap_struct);
ldap_state->ldap_struct = NULL;
}
}
}
SAFE_FREE(utf8_dn);
return rc;
}
int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
{
int rc = LDAP_SERVER_DOWN;
int attempts = 0;
char *utf8_dn;
time_t endtime = time(NULL)+lp_ldap_timeout();
SMB_ASSERT(ldap_state);
DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
return LDAP_NO_MEMORY;
}
while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
if (rc != LDAP_SUCCESS) {
char *ld_error = NULL;
int ld_errno;
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_NUMBER, &ld_errno);
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_STRING, &ld_error);
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) {
ldap_unbind(ldap_state->ldap_struct);
ldap_state->ldap_struct = NULL;
}
}
}
SAFE_FREE(utf8_dn);
return 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;
int attempts = 0;
time_t endtime = time(NULL)+lp_ldap_timeout();
if (!ldap_state)
return (-1);
while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
reqdata, serverctrls,
clientctrls, retoidp, retdatap);
if (rc != LDAP_SUCCESS) {
char *ld_error = NULL;
int ld_errno;
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_NUMBER, &ld_errno);
ldap_get_option(ldap_state->ldap_struct,
LDAP_OPT_ERROR_STRING, &ld_error);
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) {
ldap_unbind(ldap_state->ldap_struct);
ldap_state->ldap_struct = NULL;
}
}
}
return 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(), LDAP_SCOPE_SUBTREE,
filter, search_attr, 0, result);
}
static void smbldap_idle_fn(struct event_context *event_ctx,
struct timed_event *te,
const struct timeval *now,
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) > now->tv_sec) {
DEBUG(10,("ldap connection not idle...\n"));
state->idle_event = event_add_timed(
event_ctx, NULL,
timeval_add(now, SMBLDAP_IDLE_TIME, 0),
"smbldap_idle_fn", 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);
TALLOC_FREE((*ldap_state)->idle_event);
*ldap_state = NULL;
/* No need to free any further, as it is talloc()ed */
}
/**********************************************************************
Intitalise the 'general' ldap structures, on which ldap operations may be conducted
*********************************************************************/
NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
const char *location,
struct smbldap_state **smbldap_state)
{
*smbldap_state = TALLOC_ZERO_P(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)->event_context = event_ctx;
return NT_STATUS_OK;
}
/*******************************************************************
Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
********************************************************************/
char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
{
char *utf8_dn, *unix_dn;
utf8_dn = ldap_get_dn(ld, entry);
if (!utf8_dn) {
DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
return NULL;
}
if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
return NULL;
}
ldap_memfree(utf8_dn);
return unix_dn;
}
const char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
LDAPMessage *entry)
{
char *utf8_dn, *unix_dn;
utf8_dn = ldap_get_dn(ld, entry);
if (!utf8_dn) {
DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
return NULL;
}
if (pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn) == (size_t)-1) {
DEBUG (0, ("smbldap_get_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=*)", CONST_DISCARD(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; ianonymous = anon;
/* free any previously set credential */
SAFE_FREE(ldap_state->bind_dn);
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;
}