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smbldap.c
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/*
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 <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "smbldap.h"
#include "../libcli/security/security.h"
#include <tevent.h>
#include "lib/param/loadparm.h"
/* 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 */
struct smbldap_state {
LDAP *ldap_struct;
pid_t pid;
time_t last_ping; /* monotonic */
/* retrieve-once info */
const char *uri;
/* credentials */
bool anonymous;
char *bind_dn;
char *bind_secret;
smbldap_bind_callback_fn bind_callback;
void *bind_callback_data;
bool paged_results;
unsigned int num_failures;
time_t last_use; /* monotonic */
struct tevent_context *tevent_context;
struct tevent_timer *idle_event;
struct timeval last_rebind; /* monotonic */
};
LDAP *smbldap_get_ldap(struct smbldap_state *state)
{
return state->ldap_struct;
}
bool smbldap_get_paged_results(struct smbldap_state *state)
{
return state->paged_results;
}
void smbldap_set_paged_results(struct smbldap_state *state,
bool paged_results)
{
state->paged_results = paged_results;
}
void smbldap_set_bind_callback(struct smbldap_state *state,
smbldap_bind_callback_fn callback,
void *callback_data)
{
state->bind_callback = callback;
state->bind_callback_data = callback_data;
}
/*******************************************************************
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;
size_t size = 0;
if ( !attribute )
return False;
value[0] = '\0';
if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
return False;
}
if (!convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, &size)) {
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_PASSWORD
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;
size_t converted_size;
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], &converted_size)) {
DEBUG(10, ("pull_utf8_talloc failed\n"));
ldap_value_free(values);
return NULL;
}
ldap_value_free(values);
#ifdef DEBUG_PASSWORD
DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
attribute, result));
#endif
return result;
}
char * smbldap_talloc_first_attribute(LDAP *ldap_struct, LDAPMessage *entry,
const char *attribute,
TALLOC_CTX *mem_ctx)
{
char **values;
char *result;
size_t converted_size;
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 (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
DEBUG(10, ("pull_utf8_talloc failed\n"));
ldap_value_free(values);
return NULL;
}
ldap_value_free(values);
#ifdef DEBUG_PASSWORD
DEBUG (100, ("smbldap_get_first_attribute: [%s] = [%s]\n",
attribute, result));
#endif
return result;
}
char * smbldap_talloc_smallest_attribute(LDAP *ldap_struct, LDAPMessage *entry,
const char *attribute,
TALLOC_CTX *mem_ctx)
{
char **values;
char *result;
size_t converted_size;
int i, num_values;
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 (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
DEBUG(10, ("pull_utf8_talloc failed\n"));
ldap_value_free(values);
return NULL;
}
num_values = ldap_count_values(values);
for (i=1; i<num_values; i++) {
char *tmp;
if (!pull_utf8_talloc(mem_ctx, &tmp, values[i],
&converted_size)) {
DEBUG(10, ("pull_utf8_talloc failed\n"));
TALLOC_FREE(result);
ldap_value_free(values);
return NULL;
}
if (strcasecmp_m(tmp, result) < 0) {
TALLOC_FREE(result);
result = tmp;
} else {
TALLOC_FREE(tmp);
}
}
ldap_value_free(values);
#ifdef DEBUG_PASSWORD
DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
attribute, result));
#endif
return result;
}
bool smbldap_talloc_single_blob(TALLOC_CTX *mem_ctx, LDAP *ld,
LDAPMessage *msg, const char *attrib,
DATA_BLOB *blob)
{
struct berval **values;
values = ldap_get_values_len(ld, msg, attrib);
if (!values) {
return false;
}
if (ldap_count_values_len(values) != 1) {
DEBUG(10, ("Expected one value for %s, got %d\n", attrib,
ldap_count_values_len(values)));
return false;
}
*blob = data_blob_talloc(mem_ctx, values[0]->bv_val,
values[0]->bv_len);
ldap_value_free_len(values);
return (blob->data != NULL);
}
bool smbldap_pull_sid(LDAP *ld, LDAPMessage *msg, const char *attrib,
struct dom_sid *sid)
{
DATA_BLOB blob;
ssize_t ret;
if (!smbldap_talloc_single_blob(talloc_tos(), ld, msg, attrib,
&blob)) {
return false;
}
ret = sid_parse(blob.data, blob.length, sid);
TALLOC_FREE(blob.data);
return (ret != -1);
}
static int ldapmsg_destructor(LDAPMessage **result) {
ldap_msgfree(*result);
return 0;
}
void smbldap_talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
{
LDAPMessage **handle;
if (result == NULL) {
return;
}
handle = talloc(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 smbldap_talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
{
LDAPMod ***handle;
if (mod == NULL) {
return;
}
handle = talloc(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
***********************************************************************/
static void smbldap_set_mod_internal(LDAPMod *** modlist, int modop, const char *attribute, const char *value, const DATA_BLOB *blob)
{
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 re-enable.
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 (blob && (modop & LDAP_MOD_BVALUES)) {
j = 0;
if (mods[i]->mod_bvalues != NULL) {
for (; mods[i]->mod_bvalues[j] != NULL; j++);
}
mods[i]->mod_bvalues = SMB_REALLOC_ARRAY(mods[i]->mod_bvalues, struct berval *, j + 2);
if (mods[i]->mod_bvalues == NULL) {
smb_panic("smbldap_set_mod: out of memory!");
/* notreached. */
}
mods[i]->mod_bvalues[j] = SMB_MALLOC_P(struct berval);
SMB_ASSERT(mods[i]->mod_bvalues[j] != NULL);
mods[i]->mod_bvalues[j]->bv_val = (char *)smb_memdup(blob->data, blob->length);
SMB_ASSERT(mods[i]->mod_bvalues[j]->bv_val != NULL);
mods[i]->mod_bvalues[j]->bv_len = blob->length;
mods[i]->mod_bvalues[j + 1] = NULL;
} else if (value != NULL) {
char *utf8_value = NULL;
size_t converted_size;
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_talloc(talloc_tos(), &utf8_value, value, &converted_size)) {
smb_panic("smbldap_set_mod: String conversion failure!");
/* notreached. */
}
mods[i]->mod_values[j] = SMB_STRDUP(utf8_value);
TALLOC_FREE(utf8_value);
SMB_ASSERT(mods[i]->mod_values[j] != NULL);
mods[i]->mod_values[j + 1] = NULL;
}
*modlist = mods;
}
void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
{
smbldap_set_mod_internal(modlist, modop, attribute, value, NULL);
}
void smbldap_set_mod_blob(LDAPMod *** modlist, int modop, const char *attribute, const DATA_BLOB *value)
{
smbldap_set_mod_internal(modlist, modop | LDAP_MOD_BVALUES, attribute, NULL, value);
}
/**********************************************************************
Set attribute to newval in LDAP, regardless of what value the
attribute had in LDAP before.
*********************************************************************/
static void smbldap_make_mod_internal(LDAP *ldap_struct, LDAPMessage *existing,
LDAPMod ***mods,
const char *attribute, int op,
const char *newval,
const DATA_BLOB *newblob)
{
char oldval[2048]; /* current largest allowed value is mungeddial */
bool existed;
DATA_BLOB oldblob = data_blob_null;
if (existing != NULL) {
if (op & LDAP_MOD_BVALUES) {
existed = smbldap_talloc_single_blob(talloc_tos(), ldap_struct, existing, attribute, &oldblob);
} else {
existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
}
} else {
existed = False;
*oldval = '\0';
}
if (existed) {
bool equal = false;
if (op & LDAP_MOD_BVALUES) {
equal = (newblob && (data_blob_cmp(&oldblob, newblob) == 0));
} else {
/* all of our string attributes are case insensitive */
equal = (newval && (strcasecmp_m(oldval, newval) == 0));
}
if (equal) {
/* 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;
}
/* 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 */
if (op & LDAP_MOD_BVALUES) {
DEBUG(10,("smbldap_make_mod: deleting attribute |%s| blob\n", attribute));
smbldap_set_mod_blob(mods, LDAP_MOD_DELETE, attribute, &oldblob);
} else {
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 (op & LDAP_MOD_BVALUES) {
if (newblob && newblob->length) {
DEBUG(10,("smbldap_make_mod: adding attribute |%s| blob\n", attribute));
smbldap_set_mod_blob(mods, LDAP_MOD_ADD, attribute, newblob);
}
} else {
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);
}
}
}
void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
LDAPMod ***mods,
const char *attribute, const char *newval)
{
smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
0, newval, NULL);
}
void smbldap_make_mod_blob(LDAP *ldap_struct, LDAPMessage *existing,
LDAPMod ***mods,
const char *attribute, const DATA_BLOB *newblob)
{
smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
LDAP_MOD_BVALUES, NULL, newblob);
}
/**********************************************************************
Some variants 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);
t->ld = ld;
t->smbldap_state = smbldap_state;
}
/********************************************************************
start TLS on an existing LDAP connection per config
*******************************************************************/
int smbldap_start_tls(LDAP *ldap_struct, int version)
{
if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
return LDAP_SUCCESS;
}
return smbldap_start_tls_start(ldap_struct, version);
}
/********************************************************************
start TLS on an existing LDAP connection unconditionally
*******************************************************************/
int smbldap_start_tls_start(LDAP *ldap_struct, int version)
{
#ifdef LDAP_OPT_X_TLS
int rc,tls;
/* check if we use ldaps already */
ldap_get_option(ldap_struct, LDAP_OPT_X_TLS, &tls);
if (tls == LDAP_OPT_X_TLS_HARD) {
return LDAP_SUCCESS;
}
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)));
}
#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 */
}
}
/* 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
#endif /* HAVE_LDAP_INITIALIZE */
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)*/
/*******************************************************************