openldap/servers/slapd/passwd.c

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/* bind.c - ldbm backend bind and unbind routines */
/* $OpenLDAP$ */
/*
2000-05-13 10:47:56 +08:00
* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/krb.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/unistd.h>
#include "slap.h"
#include <lutil.h>
int passwd_extop(
Connection *conn, Operation *op,
const char *reqoid,
struct berval *reqdata,
char **rspoid,
struct berval **rspdata,
LDAPControl ***rspctrls,
const char **text,
struct berval ***refs )
{
int rc;
assert( reqoid != NULL );
assert( strcmp( LDAP_EXOP_X_MODIFY_PASSWD, reqoid ) == 0 );
if( op->o_dn == NULL || op->o_dn[0] == '\0' ) {
*text = "only authenicated users may change passwords";
return LDAP_STRONG_AUTH_REQUIRED;
}
if( conn->c_authz_backend != NULL && conn->c_authz_backend->be_extended )
{
if( global_readonly || conn->c_authz_backend->be_readonly ) {
*text = "authorization database is read only";
rc = LDAP_UNWILLING_TO_PERFORM;
} else if( conn->c_authz_backend->be_update_ndn != NULL ) {
/* we SHOULD return a referral in this case */
*refs = conn->c_authz_backend->be_update_refs;
rc = LDAP_REFERRAL;
} else {
rc = conn->c_authz_backend->be_extended(
conn->c_authz_backend, conn, op,
reqoid, reqdata,
rspoid, rspdata, rspctrls,
text, refs );
}
} else {
*text = "operation not supported for current user";
rc = LDAP_UNWILLING_TO_PERFORM;
}
return rc;
}
int slap_passwd_parse( struct berval *reqdata,
struct berval **id,
struct berval **oldpass,
struct berval **newpass,
const char **text )
{
int rc = LDAP_SUCCESS;
ber_tag_t tag;
ber_len_t len;
BerElement *ber;
if( reqdata == NULL ) {
return LDAP_SUCCESS;
}
ber = ber_init( reqdata );
if( ber == NULL ) {
Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ber_init failed\n",
0, 0, 0 );
*text = "password decoding error";
return LDAP_PROTOCOL_ERROR;
}
tag = ber_scanf( ber, "{" /*}*/ );
if( tag != LBER_ERROR ) {
tag = ber_peek_tag( ber, &len );
}
if( tag == LDAP_TAG_EXOP_X_MODIFY_PASSWD_ID ) {
if( id == NULL ) {
Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID not allowed.\n",
0, 0, 0 );
*text = "user must change own password";
rc = LDAP_UNWILLING_TO_PERFORM;
goto done;
}
tag = ber_scanf( ber, "O", id );
if( tag == LBER_ERROR ) {
Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID parse failed.\n",
0, 0, 0 );
goto decoding_error;
}
tag = ber_peek_tag( ber, &len);
}
if( tag == LDAP_TAG_EXOP_X_MODIFY_PASSWD_OLD ) {
if( oldpass == NULL ) {
Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD not allowed.\n",
0, 0, 0 );
*text = "use bind to verify old password";
rc = LDAP_UNWILLING_TO_PERFORM;
goto done;
}
tag = ber_scanf( ber, "O", oldpass );
if( tag == LBER_ERROR ) {
Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID parse failed.\n",
0, 0, 0 );
goto decoding_error;
}
tag = ber_peek_tag( ber, &len);
}
if( tag == LDAP_TAG_EXOP_X_MODIFY_PASSWD_NEW ) {
if( newpass == NULL ) {
Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: NEW not allowed.\n",
0, 0, 0 );
*text = "user specified passwords disallowed";
rc = LDAP_UNWILLING_TO_PERFORM;
goto done;
}
tag = ber_scanf( ber, "O", newpass );
if( tag == LBER_ERROR ) {
Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD parse failed.\n",
0, 0, 0 );
goto decoding_error;
}
tag = ber_peek_tag( ber, &len );
}
if( len != 0 ) {
decoding_error:
Debug( LDAP_DEBUG_TRACE,
"slap_passwd_parse: decoding error, len=%ld\n",
(long) len, 0, 0 );
*text = "data decoding error";
rc = LDAP_PROTOCOL_ERROR;
}
done:
if( rc != LDAP_SUCCESS ) {
if( id != NULL ) {
ber_bvfree( *id );
*id = NULL;
}
if( oldpass != NULL ) {
ber_bvfree( *oldpass );
*oldpass = NULL;
}
if( newpass != NULL ) {
ber_bvfree( *newpass );
*newpass = NULL;
}
}
ber_free( ber, 1 );
return rc;
}
struct berval * slap_passwd_return(
struct berval *cred )
{
int rc;
struct berval *bv;
BerElement *ber = ber_alloc_t(LBER_USE_DER);
assert( cred != NULL );
Debug( LDAP_DEBUG_TRACE, "slap_passwd_return: %ld\n",
(long) cred->bv_len, 0, 0 );
if( ber == NULL ) return NULL;
rc = ber_printf( ber, "{tON}",
LDAP_TAG_EXOP_X_MODIFY_PASSWD_GEN, cred );
if( rc == -1 ) {
ber_free( ber, 1 );
return NULL;
}
(void) ber_flatten( ber, &bv );
ber_free( ber, 1 );
return bv;
}
int
slap_passwd_check(
Attribute *a,
struct berval *cred )
{
int i;
for ( i = 0; a->a_vals[i] != NULL; i++ ) {
int result;
#ifdef SLAPD_CRYPT
ldap_pvt_thread_mutex_lock( &crypt_mutex );
#endif
result = lutil_passwd( a->a_vals[i], cred, NULL );
#ifdef SLAPD_CRYPT
ldap_pvt_thread_mutex_unlock( &crypt_mutex );
#endif
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if( !result )
return result;
}
return( 1 );
}
struct berval * slap_passwd_generate( void )
{
Debug( LDAP_DEBUG_TRACE, "slap_passwd_generate\n", 0, 0, 0 );
/*
* generate passwords of only 8 characters as some getpass(3)
* implementations truncate at 8 characters.
*/
return lutil_passwd_generate( 8 );
}
struct berval * slap_passwd_hash(
struct berval * cred )
{
char* hash = default_passwd_hash ? default_passwd_hash : "{SSHA}";
struct berval *new;
#ifdef SLAPD_CRYPT
ldap_pvt_thread_mutex_lock( &crypt_mutex );
#endif
new = lutil_passwd_hash( cred , hash );
#ifdef SLAPD_CRYPT
ldap_pvt_thread_mutex_unlock( &crypt_mutex );
#endif
return new;
}