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/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
/* bind.c - ldbm backend bind and unbind routines */
#include "back-ldbm.h"
#if defined( XP_WIN32 )
typedef enum LDAPWAEnum {
LDAPWA_NoDomainAttr = -3,
LDAPWA_InvalidCredentials = -2,
LDAPWA_Failure = -1,
LDAPWA_Success= 0
} LDAPWAStatus;
int
GetDomainUsername(
char *pszNTuserdomainid,
char *pszNTDomain,
char *pszNTUsername
)
{
char *pszAttr, *pDomain, *pUsername;
if( !pszNTuserdomainid )
return( 1 );
// Split the specially constructed attribute.
pszAttr = slapi_ch_strdup( pszNTuserdomainid );
pDomain = pszAttr;
pUsername = strchr( pszAttr, ':' );
if( pUsername == NULL )
return( 1 );
// Set the end of the NT Domain name,
// and the start of the NT username.
*pUsername = (char)NULL;
pUsername++;
strcpy( pszNTDomain, pDomain);
strcpy( pszNTUsername, pUsername);
slapi_ch_free( (void**)&pszAttr );
return( 0 );
}
/* Attempt Windows NT Authentication, using the password from the client app,
with the NT Domain and NT username, both stored in the entry.
If successful, the ldap_bind() is completed successsfully. */
LDAPWAStatus
WindowsAuthentication(
struct backentry *e,
struct berval *cred
)
{
Slapi_Attr *a;
Slapi_Value *sval = NULL;
int iStatus;
char szNTDomain[MAX_PATH], szNTUsername[MAX_PATH];
HANDLE hToken = NULL;
BOOL bLogonStatus = FALSE;
int i= -1;
/* Get the NT Domain and username - if the entry has such an attribute */
if( !e || !e->ep_entry ||
slapi_entry_attr_find( e->ep_entry, "ntuserdomainid", &a ) != 0)
{
return( LDAPWA_NoDomainAttr );
}
i= slapi_attr_first_value( a, &sval );
if(sval==NULL)
{
return( LDAPWA_NoDomainAttr );
}
while(i != -1)
{
const struct berval *val = slapi_value_get_berval(sval);
char * colon = NULL;
if (!val->bv_val || (strlen(val->bv_val) > (MAX_PATH<<1))) {
LDAPDebug( LDAP_DEBUG_TRACE,
"WindowsAuthentication => validation FAILED for \"%s\" on NT Domain : "
"ntuserdomainid attr value too long\n",
val->bv_val, 0, 0);
i= slapi_attr_next_value(a, i, &sval);
continue;
}
colon = strchr( val->bv_val, ':' );
if (!colon || ((colon - val->bv_val)/sizeof(char) > MAX_PATH)) {
if (!colon) {
LDAPDebug( LDAP_DEBUG_TRACE,
"WindowsAuthentication => validation FAILED for \"%s\" on NT Domain : "
"a colon is missing in ntuserdomainid attr value\n",
val->bv_val, 0, 0);
}
else {
LDAPDebug( LDAP_DEBUG_TRACE,
"WindowsAuthentication => validation FAILED for \"%s\" on NT Domain : "
"domain in ntuserdomainid attr value too long\n",
val->bv_val, 0, 0);
}
i= slapi_attr_next_value(a, i, &sval);
continue;
}
if(( iStatus = GetDomainUsername( val->bv_val,
szNTDomain,
szNTUsername )) != 0)
{
i= slapi_attr_next_value(a, i, &sval);
continue;
}
#if !defined( LOGON32_LOGON_NETWORK )
/* This is specified in the WIn32 LogonUser() documentation, but not defined
in the Visual C++ 4.2 include file winbase.h. A search of the lastest version
of this file at www.microsoft.com finds that LOGON32_LOGON_NETWORK == 3.
*/
#define LOGON32_LOGON_NETWORK 3
#endif
/* Now do the Logon attempt */
bLogonStatus = LogonUser( szNTUsername, // string that specifies the user name
szNTDomain, // string that specifies the domain or server
cred->bv_val, // string that specifies the password
LOGON32_LOGON_NETWORK, // the type of logon operation,
LOGON32_PROVIDER_DEFAULT, // specifies the logon provider
&hToken ); // pointer to variable to receive token handle
if( bLogonStatus && hToken )
CloseHandle( hToken );
if( bLogonStatus )
{
// Successful validation
LDAPDebug( LDAP_DEBUG_TRACE,
"WindowsAuthentication => validated \"%s\" on NT Domain \"%s\"\n",
szNTUsername, szNTDomain, 0 );
return( LDAPWA_Success );
}
else
{
LDAPDebug( LDAP_DEBUG_TRACE,
"WindowsAuthentication => validation FAILED for \"%s\" on NT Domain \"%s\", reason %d\n",
szNTUsername, szNTDomain, GetLastError() );
return( LDAPWA_InvalidCredentials );
}
i= slapi_attr_next_value(a, i, &sval);
}
return( LDAPWA_Failure );
}
#endif
int
ldbm_back_bind( Slapi_PBlock *pb )
{
backend *be;
ldbm_instance *inst;
int method;
struct berval *cred;
struct ldbminfo *li;
struct backentry *e;
Slapi_Attr *attr;
Slapi_Value **bvals;
entry_address *addr;
/* get parameters */
slapi_pblock_get( pb, SLAPI_BACKEND, &be );
slapi_pblock_get( pb, SLAPI_PLUGIN_PRIVATE, &li );
slapi_pblock_get( pb, SLAPI_TARGET_ADDRESS, &addr );
slapi_pblock_get( pb, SLAPI_BIND_METHOD, &method );
slapi_pblock_get( pb, SLAPI_BIND_CREDENTIALS, &cred );
inst = (ldbm_instance *) be->be_instance_info;
/* always allow noauth simple binds (front end will send the result) */
if ( method == LDAP_AUTH_SIMPLE && cred->bv_len == 0 ) {
return( SLAPI_BIND_ANONYMOUS );
}
/*
* find the target entry. find_entry() takes care of referrals
* and sending errors if the entry does not exist.
*/
if (( e = find_entry( pb, be, addr, NULL /* no txn */ )) == NULL ) {
return( SLAPI_BIND_FAIL );
}
switch ( method ) {
case LDAP_AUTH_SIMPLE:
{
Slapi_Value cv;
if ( slapi_entry_attr_find( e->ep_entry, "userpassword", &attr ) != 0 ) {
#if defined( XP_WIN32 )
if( WindowsAuthentication( e, cred ) == LDAPWA_Success ) {
break;
}
#endif
slapi_send_ldap_result( pb, LDAP_INAPPROPRIATE_AUTH, NULL,
NULL, 0, NULL );
cache_return( &inst->inst_cache, &e );
return( SLAPI_BIND_FAIL );
}
bvals= attr_get_present_values(attr);
slapi_value_init_berval(&cv,cred);
if ( slapi_pw_find_sv( bvals, &cv ) != 0 ) {
#if defined( XP_WIN32 )
/* One last try - attempt Windows authentication,
if the user has a Windows account. */
if( WindowsAuthentication( e, cred ) == LDAPWA_Success ) {
break;
}
#endif
slapi_send_ldap_result( pb, LDAP_INVALID_CREDENTIALS, NULL,
NULL, 0, NULL );
cache_return( &inst->inst_cache, &e );
value_done(&cv);
return( SLAPI_BIND_FAIL );
}
value_done(&cv);
}
break;
default:
slapi_send_ldap_result( pb, LDAP_STRONG_AUTH_NOT_SUPPORTED, NULL,
"auth method not supported", 0, NULL );
cache_return( &inst->inst_cache, &e );
return( SLAPI_BIND_FAIL );
}
cache_return( &inst->inst_cache, &e );
/* success: front end will send result */
return( SLAPI_BIND_SUCCESS );
}
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