mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
1109 lines
25 KiB
C
1109 lines
25 KiB
C
/* $OpenLDAP$ */
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/*
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* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/stdlib.h>
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#include <ac/string.h>
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#include <lber.h>
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#include <ldap_log.h>
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#include "slap.h"
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#ifdef HAVE_CYRUS_SASL
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#include <limits.h>
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#ifdef HAVE_SASL_SASL_H
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#include <sasl/sasl.h>
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#else
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#include <sasl.h>
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#endif
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#if SASL_VERSION_MAJOR >= 2
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#include <lutil.h>
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#define SASL_CONST const
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#else
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#define SASL_CONST
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#endif
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#include <ldap_pvt.h>
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#ifdef SLAPD_SPASSWD
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#include <lutil.h>
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#endif
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/* Flags for telling slap_sasl_getdn() what type of identity is being passed */
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#define FLAG_GETDN_FINAL 1
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#define FLAG_GETDN_AUTHCID 2
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#define FLAG_GETDN_AUTHZID 4
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static sasl_security_properties_t sasl_secprops;
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static int
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slap_sasl_log(
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void *context,
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int priority,
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const char *message)
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{
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Connection *conn = context;
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int level;
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const char * label;
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if ( message == NULL ) {
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return SASL_BADPARAM;
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}
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switch (priority) {
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#if SASL_VERSION_MAJOR >= 2
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case SASL_LOG_NONE:
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level = LDAP_DEBUG_NONE;
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label = "None";
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break;
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case SASL_LOG_ERR:
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level = LDAP_DEBUG_ANY;
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label = "Error";
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break;
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case SASL_LOG_FAIL:
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level = LDAP_DEBUG_ANY;
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label = "Failure";
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break;
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case SASL_LOG_WARN:
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level = LDAP_DEBUG_TRACE;
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label = "Warning";
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break;
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case SASL_LOG_NOTE:
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level = LDAP_DEBUG_TRACE;
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label = "Notice";
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break;
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case SASL_LOG_DEBUG:
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level = LDAP_DEBUG_TRACE;
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label = "Debug";
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break;
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case SASL_LOG_TRACE:
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level = LDAP_DEBUG_TRACE;
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label = "Trace";
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break;
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case SASL_LOG_PASS:
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level = LDAP_DEBUG_TRACE;
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label = "Password Trace";
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break;
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#else
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case SASL_LOG_ERR:
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level = LDAP_DEBUG_ANY;
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label = "Error";
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break;
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case SASL_LOG_WARNING:
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level = LDAP_DEBUG_TRACE;
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label = "Warning";
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break;
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case SASL_LOG_INFO:
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level = LDAP_DEBUG_TRACE;
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label = "Info";
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break;
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#endif
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default:
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return SASL_BADPARAM;
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}
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
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"SASL [conn=%ld] %s: %s\n",
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conn ? conn->c_connid : -1,
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label, message ));
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#else
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Debug( level, "SASL [conn=%ld] %s: %s\n",
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conn ? conn->c_connid: -1,
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label, message );
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#endif
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return SASL_OK;
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}
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/* Take any sort of identity string and return a DN with the "dn:" prefix. The
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string returned in *dn is in its own allocated memory, and must be free'd
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by the calling process.
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-Mark Adamson, Carnegie Mellon
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*/
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#define SET_DN 1
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#define SET_U 2
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static struct berval ext_bv = { sizeof("EXTERNAL")-1, "EXTERNAL" };
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int slap_sasl_getdn( Connection *conn, char *id,
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char *user_realm, struct berval *dn, int flags )
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{
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char *c1;
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int rc, len, is_dn = 0;
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sasl_conn_t *ctx;
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struct berval dn2;
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
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"slap_sasl_getdn: conn %d id=%s\n",
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conn ? conn->c_connid : -1,
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id ? (*id ? id : "<empty>") : "NULL" ));
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#else
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Debug( LDAP_DEBUG_ARGS, "slap_sasl_getdn: id=%s\n",
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id?(*id?id:"<empty>"):"NULL",0,0 );
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#endif
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dn->bv_val = NULL;
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dn->bv_len = 0;
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/* Blatantly anonymous ID */
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if( id &&
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( id[sizeof( "anonymous" )-1] == '\0'
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|| id[sizeof( "anonymous" )-1] == '@' ) &&
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!strncasecmp( id, "anonymous", sizeof( "anonymous" )-1) ) {
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return( LDAP_SUCCESS );
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}
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ctx = conn->c_sasl_context;
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len = strlen( id );
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/* An authcID needs to be converted to authzID form */
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if( flags & FLAG_GETDN_AUTHCID ) {
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if( sasl_external_x509dn_convert
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&& conn->c_sasl_bind_mech.bv_len == ext_bv.bv_len
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&& ( strcasecmp( ext_bv.bv_val, conn->c_sasl_bind_mech.bv_val ) == 0 )
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&& id[0] == '/' )
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{
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/* check SASL external for X.509 style DN and */
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/* convert to dn:<dn> form */
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dn->bv_val = ldap_dcedn2dn( id );
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dn->bv_len = strlen(dn->bv_val);
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is_dn = SET_DN;
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} else {
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/* convert to u:<username> form */
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ber_str2bv( id, len, 1, dn );
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is_dn = SET_U;
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}
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}
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if( !is_dn ) {
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if( !strncasecmp( id, "u:", sizeof("u:")-1 )) {
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is_dn = SET_U;
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ber_str2bv( id+2, len-2, 1, dn );
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} else if ( !strncasecmp( id, "dn:", sizeof("dn:")-1) ) {
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is_dn = SET_DN;
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ber_str2bv( id+3, len-3, 1, dn );
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}
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}
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/* An authzID must be properly prefixed */
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if( (flags & FLAG_GETDN_AUTHZID) && !is_dn ) {
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free( dn->bv_val );
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dn->bv_val = NULL;
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dn->bv_len = 0;
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return( LDAP_INAPPROPRIATE_AUTH );
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}
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/* Username strings */
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if( is_dn == SET_U ) {
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char *p;
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len = dn->bv_len + sizeof("uid=")-1 + sizeof(",cn=auth")-1;
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if( user_realm && *user_realm ) {
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len += strlen( user_realm ) + sizeof(",cn=")-1;
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}
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if( conn->c_sasl_bind_mech.bv_len ) {
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len += conn->c_sasl_bind_mech.bv_len + sizeof(",cn=")-1;
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}
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/* Build the new dn */
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c1 = dn->bv_val;
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dn->bv_val = ch_malloc( len+1 );
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p = slap_strcopy( dn->bv_val, "uid=" );
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p = slap_strcopy( p, c1 );
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ch_free( c1 );
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if( user_realm && *user_realm ) {
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p = slap_strcopy( p, ",cn=" );
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p = slap_strcopy( p, user_realm );
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}
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if( conn->c_sasl_bind_mech.bv_len ) {
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p = slap_strcopy( p, ",cn=" );
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p = slap_strcopy( p, conn->c_sasl_bind_mech.bv_val );
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}
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p = slap_strcopy( p, ",cn=auth" );
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dn->bv_len = p - dn->bv_val;
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is_dn = SET_DN;
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
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"slap_sasl_getdn: u:id converted to %s.\n", dn->bv_val ));
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#else
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Debug( LDAP_DEBUG_TRACE, "getdn: u:id converted to %s\n", dn->bv_val,0,0 );
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#endif
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}
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/* DN strings that are a cn=auth identity to run through regexp */
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if( is_dn == SET_DN && ( ( flags & FLAG_GETDN_FINAL ) == 0 ) )
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{
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slap_sasl2dn( dn, &dn2 );
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if( dn2.bv_val ) {
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ch_free( dn->bv_val );
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*dn = dn2;
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
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"slap_sasl_getdn: dn:id converted to %s.\n", dn->bv_val ));
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#else
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Debug( LDAP_DEBUG_TRACE, "getdn: dn:id converted to %s\n",
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dn->bv_val, 0, 0 );
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#endif
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}
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}
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if( flags & FLAG_GETDN_FINAL ) {
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/* omit "dn:" prefix */
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is_dn = 0;
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} else {
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rc = dnNormalize2( NULL, dn, &dn2 );
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free(dn->bv_val);
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if ( rc != LDAP_SUCCESS ) {
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*dn = slap_empty_bv;
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return rc;
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}
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*dn = dn2;
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}
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/* Attach the "dn:" prefix if needed */
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if ( is_dn == SET_DN ) {
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c1 = ch_malloc( dn->bv_len + sizeof("dn:") );
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strcpy( c1, "dn:" );
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strcpy( c1 + 3, dn->bv_val );
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free( dn->bv_val );
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dn->bv_val = c1;
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dn->bv_len += 3;
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}
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return( LDAP_SUCCESS );
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}
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#if SASL_VERSION_MAJOR >= 2
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static int
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slap_sasl_checkpass(
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sasl_conn_t *sconn,
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void *context,
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const char *username,
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const char *pass,
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unsigned passlen,
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struct propctx *propctx)
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{
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Connection *conn = (Connection *)context;
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struct berval dn, cred;
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int rc;
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BerVarray vals, bv;
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cred.bv_val = (char *)pass;
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cred.bv_len = passlen;
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/* XXX do we need to check sasldb as well? */
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/* XXX can we do both steps at once? */
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rc = slap_sasl_getdn( conn, (char *)username, NULL, &dn,
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FLAG_GETDN_AUTHCID | FLAG_GETDN_FINAL );
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if ( rc != LDAP_SUCCESS ) {
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sasl_seterror( sconn, 0, ldap_err2string( rc ) );
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return SASL_NOUSER;
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}
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if ( dn.bv_len == 0 ) {
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sasl_seterror( sconn, 0,
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"No password is associated with the Root DSE" );
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if ( dn.bv_val != NULL ) {
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ch_free( dn.bv_val );
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}
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return SASL_NOUSER;
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}
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rc = backend_attribute( NULL, NULL, NULL, NULL, &dn,
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slap_schema.si_ad_userPassword, &vals);
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if ( rc != LDAP_SUCCESS ) {
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ch_free( dn.bv_val );
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sasl_seterror( sconn, 0, ldap_err2string( rc ) );
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return SASL_NOVERIFY;
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}
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rc = SASL_NOVERIFY;
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if ( vals != NULL ) {
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for ( bv = vals; bv->bv_val != NULL; bv++ ) {
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if ( !lutil_passwd( bv, &cred, NULL ) ) {
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rc = SASL_OK;
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break;
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}
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}
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ber_bvarray_free( vals );
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}
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if ( rc != SASL_OK ) {
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sasl_seterror( sconn, 0,
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ldap_err2string( LDAP_INVALID_CREDENTIALS ) );
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}
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ch_free( dn.bv_val );
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return rc;
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}
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static int
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slap_sasl_canonicalize(
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sasl_conn_t *sconn,
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void *context,
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const char *in,
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unsigned inlen,
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unsigned flags,
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const char *user_realm,
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char *out,
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unsigned out_max,
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unsigned *out_len)
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{
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Connection *conn = (Connection *)context;
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struct berval dn;
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int rc;
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*out_len = 0;
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
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"slap_sasl_canonicalize: conn %d %s=\"%s\"\n",
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conn ? conn->c_connid : -1,
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(flags == SASL_CU_AUTHID) ? "authcid" : "authzid",
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in ? in : "<empty>" ));
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#else
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Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: "
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"%s=\"%s\"\n",
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conn ? conn->c_connid : -1,
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(flags == SASL_CU_AUTHID) ? "authcid" : "authzid",
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in ? in : "<empty>" );
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#endif
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if (flags == SASL_CU_AUTHID) {
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rc = slap_sasl_getdn( conn, (char *)in, (char *)user_realm,
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&dn, FLAG_GETDN_AUTHCID);
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if ( rc != LDAP_SUCCESS ) {
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sasl_seterror( sconn, 0, ldap_err2string( rc ) );
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return SASL_NOAUTHZ;
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}
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if ( out_max < dn.bv_len ) {
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return SASL_BUFOVER;
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}
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AC_MEMCPY( out, dn.bv_val, dn.bv_len );
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out[dn.bv_len] = '\0';
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*out_len = dn.bv_len;
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ch_free( dn.bv_val );
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} else {
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strcpy( out, in );
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*out_len = strlen( in );
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}
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
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"slap_sasl_canonicalize: conn %d %s=\"%s\"\n",
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conn ? conn->c_connid : -1,
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(flags == SASL_CU_AUTHID) ? "authcDN" : "authzDN",
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out ));
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#else
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Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: "
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"%s=\"%s\"\n",
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conn ? conn->c_connid : -1,
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(flags == SASL_CU_AUTHID) ? "authcDN" : "authzDN",
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out );
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#endif
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return SASL_OK;
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}
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static int
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slap_sasl_authorize(
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sasl_conn_t *sconn,
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void *context,
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const char *requested_user,
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unsigned rlen,
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const char *auth_identity,
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unsigned alen,
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const char *def_realm,
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unsigned urlen,
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struct propctx *propctx)
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{
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Connection *conn = (Connection *)context;
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struct berval authcDN, authzDN;
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int rc;
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authcDN.bv_val = (char *)auth_identity;
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authcDN.bv_len = alen;
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authzDN.bv_val = (char *)requested_user;
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authzDN.bv_len = rlen;
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
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"slap_sasl_authorize: conn %d authcDN=\"%s\" authzDN=\"%s\"\n",
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conn ? conn->c_connid : -1, authcDN.bv_val, authzDN.bv_val));
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#else
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Debug( LDAP_DEBUG_ARGS, "SASL Authorize [conn=%ld]: "
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"authcDN=\"%s\" authzDN=\"%s\"\n",
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conn ? conn->c_connid : -1, authcDN.bv_val, authzDN.bv_val );
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#endif
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rc = slap_sasl_authorized( &authcDN, &authzDN );
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if ( rc != LDAP_SUCCESS ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
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"slap_sasl_authorize: conn %ld authorization disallowed (%d)\n",
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(long)(conn ? conn->c_connid : -1), rc ));
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#else
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Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
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" authorization disallowed (%d)\n",
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(long) (conn ? conn->c_connid : -1), rc, 0 );
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#endif
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sasl_seterror( sconn, 0, "not authorized" );
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return SASL_NOAUTHZ;
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}
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
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"slap_sasl_authorize: conn %d authorization allowed\n",
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(long)(conn ? conn->c_connid : -1 ) ));
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#else
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Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
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" authorization allowed\n",
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(long) (conn ? conn->c_connid : -1), 0, 0 );
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#endif
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return SASL_OK;
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}
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#else
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static int
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slap_sasl_authorize(
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void *context,
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const char *authcid,
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const char *authzid,
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const char **user,
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const char **errstr)
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{
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struct berval authcDN, authzDN;
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int rc;
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Connection *conn = context;
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char *realm;
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*user = NULL;
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#ifdef NEW_LOGGING
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LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
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"slap_sasl_authorize: conn %d authcid=\"%s\" authzid=\"%s\"\n",
|
|
conn ? conn->c_connid : -1,
|
|
authcid ? authcid : "<empty>",
|
|
authzid ? authzid : "<empty>" ));
|
|
#else
|
|
Debug( LDAP_DEBUG_ARGS, "SASL Authorize [conn=%ld]: "
|
|
"authcid=\"%s\" authzid=\"%s\"\n",
|
|
(long) (conn ? conn->c_connid : -1),
|
|
authcid ? authcid : "<empty>",
|
|
authzid ? authzid : "<empty>" );
|
|
#endif
|
|
|
|
/* Figure out how much data we have for the dn */
|
|
rc = sasl_getprop( conn->c_sasl_context, SASL_REALM, (void **)&realm );
|
|
if( rc != SASL_OK && rc != SASL_NOTDONE ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
|
|
"slap_sasl_authorize: getprop(REALM) failed.\n" ));
|
|
#else
|
|
Debug(LDAP_DEBUG_TRACE,
|
|
"authorize: getprop(REALM) failed!\n", 0,0,0);
|
|
#endif
|
|
*errstr = "Could not extract realm";
|
|
return SASL_NOAUTHZ;
|
|
}
|
|
|
|
/* Convert the identities to DN's. If no authzid was given, client will
|
|
be bound as the DN matching their username */
|
|
rc = slap_sasl_getdn( conn, (char *)authcid, realm, &authcDN, FLAG_GETDN_AUTHCID );
|
|
if( rc != LDAP_SUCCESS ) {
|
|
*errstr = ldap_err2string( rc );
|
|
return SASL_NOAUTHZ;
|
|
}
|
|
if( ( authzid == NULL ) || !strcmp( authcid,authzid ) ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
|
|
"slap_sasl_authorize: conn %d Using authcDN=%s\n",
|
|
conn ? conn->c_connid : -1, authcDN.bv_val ));
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
|
|
"Using authcDN=%s\n", (long) (conn ? conn->c_connid : -1), authcDN.bv_val,0 );
|
|
#endif
|
|
|
|
*user = authcDN.bv_val;
|
|
*errstr = NULL;
|
|
return SASL_OK;
|
|
}
|
|
rc = slap_sasl_getdn( conn, (char *)authzid, realm, &authzDN, FLAG_GETDN_AUTHZID );
|
|
if( rc != LDAP_SUCCESS ) {
|
|
ch_free( authcDN.bv_val );
|
|
*errstr = ldap_err2string( rc );
|
|
return SASL_NOAUTHZ;
|
|
}
|
|
|
|
rc = slap_sasl_authorized( &authcDN, &authzDN );
|
|
if( rc ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
|
|
"slap_sasl_authorize: conn %ld authorization disallowed (%d)\n",
|
|
(long)(conn ? conn->c_connid : -1), rc ));
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
|
|
" authorization disallowed (%d)\n",
|
|
(long) (conn ? conn->c_connid : -1), rc, 0 );
|
|
#endif
|
|
|
|
*errstr = "not authorized";
|
|
ch_free( authcDN.bv_val );
|
|
ch_free( authzDN.bv_val );
|
|
return SASL_NOAUTHZ;
|
|
}
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
|
|
"slap_sasl_authorize: conn %d authorization allowed\n",
|
|
(long)(conn ? conn->c_connid : -1 ) ));
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
|
|
" authorization allowed\n",
|
|
(long) (conn ? conn->c_connid : -1), 0, 0 );
|
|
#endif
|
|
|
|
|
|
ch_free( authcDN.bv_val );
|
|
*user = authzDN.bv_val;
|
|
*errstr = NULL;
|
|
return SASL_OK;
|
|
}
|
|
#endif /* SASL_VERSION_MAJOR >= 2 */
|
|
|
|
static int
|
|
slap_sasl_err2ldap( int saslerr )
|
|
{
|
|
int rc;
|
|
|
|
switch (saslerr) {
|
|
case SASL_CONTINUE:
|
|
rc = LDAP_SASL_BIND_IN_PROGRESS;
|
|
break;
|
|
case SASL_FAIL:
|
|
rc = LDAP_OTHER;
|
|
break;
|
|
case SASL_NOMEM:
|
|
rc = LDAP_OTHER;
|
|
break;
|
|
case SASL_NOMECH:
|
|
rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
|
|
break;
|
|
case SASL_BADAUTH:
|
|
rc = LDAP_INVALID_CREDENTIALS;
|
|
break;
|
|
case SASL_NOAUTHZ:
|
|
rc = LDAP_INSUFFICIENT_ACCESS;
|
|
break;
|
|
case SASL_TOOWEAK:
|
|
case SASL_ENCRYPT:
|
|
rc = LDAP_INAPPROPRIATE_AUTH;
|
|
break;
|
|
default:
|
|
rc = LDAP_OTHER;
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
|
|
int slap_sasl_init( void )
|
|
{
|
|
#ifdef HAVE_CYRUS_SASL
|
|
int rc;
|
|
static sasl_callback_t server_callbacks[] = {
|
|
{ SASL_CB_LOG, &slap_sasl_log, NULL },
|
|
{ SASL_CB_LIST_END, NULL, NULL }
|
|
};
|
|
|
|
sasl_set_alloc(
|
|
ch_malloc,
|
|
ch_calloc,
|
|
ch_realloc,
|
|
ch_free );
|
|
|
|
sasl_set_mutex(
|
|
ldap_pvt_sasl_mutex_new,
|
|
ldap_pvt_sasl_mutex_lock,
|
|
ldap_pvt_sasl_mutex_unlock,
|
|
ldap_pvt_sasl_mutex_dispose );
|
|
|
|
/* should provide callbacks for logging */
|
|
/* server name should be configurable */
|
|
rc = sasl_server_init( server_callbacks, "slapd" );
|
|
|
|
if( rc != SASL_OK ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
|
|
"slap_sasl_init: init failed.\n" ));
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "sasl_server_init failed\n",
|
|
0, 0, 0 );
|
|
#endif
|
|
|
|
return -1;
|
|
}
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
|
|
"slap_sasl_init: initialized!\n"));
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "slap_sasl_init: initialized!\n",
|
|
0, 0, 0 );
|
|
#endif
|
|
|
|
|
|
/* default security properties */
|
|
memset( &sasl_secprops, '\0', sizeof(sasl_secprops) );
|
|
sasl_secprops.max_ssf = INT_MAX;
|
|
sasl_secprops.maxbufsize = 65536;
|
|
sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
int slap_sasl_destroy( void )
|
|
{
|
|
#ifdef HAVE_CYRUS_SASL
|
|
sasl_done();
|
|
#endif
|
|
free( global_host );
|
|
global_host = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int slap_sasl_open( Connection *conn )
|
|
{
|
|
int cb, sc = LDAP_SUCCESS;
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
char *ipremoteport = NULL, *iplocalport = NULL;
|
|
#endif
|
|
|
|
#ifdef HAVE_CYRUS_SASL
|
|
sasl_conn_t *ctx = NULL;
|
|
sasl_callback_t *session_callbacks;
|
|
|
|
assert( conn->c_sasl_context == NULL );
|
|
assert( conn->c_sasl_extra == NULL );
|
|
|
|
conn->c_sasl_layers = 0;
|
|
|
|
session_callbacks =
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
ch_calloc( 5, sizeof(sasl_callback_t));
|
|
#else
|
|
ch_calloc( 3, sizeof(sasl_callback_t));
|
|
#endif
|
|
conn->c_sasl_extra = session_callbacks;
|
|
|
|
session_callbacks[cb=0].id = SASL_CB_LOG;
|
|
session_callbacks[cb].proc = &slap_sasl_log;
|
|
session_callbacks[cb++].context = conn;
|
|
|
|
session_callbacks[cb].id = SASL_CB_PROXY_POLICY;
|
|
session_callbacks[cb].proc = &slap_sasl_authorize;
|
|
session_callbacks[cb++].context = conn;
|
|
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
session_callbacks[cb].id = SASL_CB_CANON_USER;
|
|
session_callbacks[cb].proc = &slap_sasl_canonicalize;
|
|
session_callbacks[cb++].context = conn;
|
|
|
|
/* XXXX: this should be conditional */
|
|
session_callbacks[cb].id = SASL_CB_SERVER_USERDB_CHECKPASS;
|
|
session_callbacks[cb].proc = &slap_sasl_checkpass;
|
|
session_callbacks[cb++].context = conn;
|
|
#endif
|
|
|
|
session_callbacks[cb].id = SASL_CB_LIST_END;
|
|
session_callbacks[cb].proc = NULL;
|
|
session_callbacks[cb++].context = NULL;
|
|
|
|
if( global_host == NULL ) {
|
|
global_host = ldap_pvt_get_fqdn( NULL );
|
|
}
|
|
|
|
/* create new SASL context */
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
if ( conn->c_sock_name.bv_len != 0 &&
|
|
strncmp( conn->c_sock_name.bv_val, "IP=", 3 ) == 0) {
|
|
char *p;
|
|
|
|
iplocalport = ch_strdup( conn->c_sock_name.bv_val + 3 );
|
|
/* Convert IPv6 addresses to address;port syntax. */
|
|
p = strrchr( iplocalport, ' ' );
|
|
/* Convert IPv4 addresses to address;port syntax. */
|
|
if ( p == NULL ) p = strchr( iplocalport, ':' );
|
|
if ( p != NULL ) {
|
|
*p = ';';
|
|
}
|
|
}
|
|
if ( conn->c_peer_name.bv_len != 0 &&
|
|
strncmp( conn->c_peer_name.bv_val, "IP=", 3 ) == 0) {
|
|
char *p;
|
|
|
|
ipremoteport = ch_strdup( conn->c_peer_name.bv_val + 3 );
|
|
/* Convert IPv6 addresses to address;port syntax. */
|
|
p = strrchr( ipremoteport, ' ' );
|
|
/* Convert IPv4 addresses to address;port syntax. */
|
|
if ( p == NULL ) p = strchr( ipremoteport, ':' );
|
|
if ( p != NULL ) {
|
|
*p = ';';
|
|
}
|
|
}
|
|
sc = sasl_server_new( "ldap", global_host, global_realm,
|
|
iplocalport, ipremoteport, session_callbacks, 0, &ctx );
|
|
if ( iplocalport != NULL ) {
|
|
ch_free( iplocalport );
|
|
}
|
|
if ( ipremoteport != NULL ) {
|
|
ch_free( ipremoteport );
|
|
}
|
|
#else
|
|
sc = sasl_server_new( "ldap", global_host, global_realm,
|
|
session_callbacks, SASL_SECURITY_LAYER, &ctx );
|
|
#endif
|
|
|
|
if( sc != SASL_OK ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
|
|
"slap_sasl_open: sasl_server_new failed: %d\n", sc ));
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "sasl_server_new failed: %d\n",
|
|
sc, 0, 0 );
|
|
#endif
|
|
|
|
return -1;
|
|
}
|
|
|
|
conn->c_sasl_context = ctx;
|
|
|
|
if( sc == SASL_OK ) {
|
|
sc = sasl_setprop( ctx,
|
|
SASL_SEC_PROPS, &sasl_secprops );
|
|
|
|
if( sc != SASL_OK ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
|
|
"slap_sasl_open: sasl_setprop failed: %d \n", sc ));
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "sasl_setprop failed: %d\n",
|
|
sc, 0, 0 );
|
|
#endif
|
|
|
|
slap_sasl_close( conn );
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
sc = slap_sasl_err2ldap( sc );
|
|
#endif
|
|
return sc;
|
|
}
|
|
|
|
int slap_sasl_external(
|
|
Connection *conn,
|
|
slap_ssf_t ssf,
|
|
const char *auth_id )
|
|
{
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
int sc;
|
|
sasl_conn_t *ctx = conn->c_sasl_context;
|
|
|
|
if ( ctx == NULL ) {
|
|
return LDAP_UNAVAILABLE;
|
|
}
|
|
|
|
sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf );
|
|
|
|
if ( sc != SASL_OK ) {
|
|
return LDAP_OTHER;
|
|
}
|
|
|
|
sc = sasl_setprop( ctx, SASL_AUTH_EXTERNAL, auth_id );
|
|
|
|
if ( sc != SASL_OK ) {
|
|
return LDAP_OTHER;
|
|
}
|
|
|
|
#elif defined(HAVE_CYRUS_SASL)
|
|
int sc;
|
|
sasl_conn_t *ctx = conn->c_sasl_context;
|
|
sasl_external_properties_t extprops;
|
|
|
|
if ( ctx == NULL ) {
|
|
return LDAP_UNAVAILABLE;
|
|
}
|
|
|
|
memset( &extprops, '\0', sizeof(extprops) );
|
|
extprops.ssf = ssf;
|
|
extprops.auth_id = (char *) auth_id;
|
|
|
|
sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
|
|
(void *) &extprops );
|
|
|
|
if ( sc != SASL_OK ) {
|
|
return LDAP_OTHER;
|
|
}
|
|
#endif
|
|
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
int slap_sasl_reset( Connection *conn )
|
|
{
|
|
#ifdef HAVE_CYRUS_SASL
|
|
sasl_conn_t *ctx = conn->c_sasl_context;
|
|
|
|
if( ctx != NULL ) {
|
|
}
|
|
#endif
|
|
/* must return "anonymous" */
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
char ** slap_sasl_mechs( Connection *conn )
|
|
{
|
|
char **mechs = NULL;
|
|
|
|
#ifdef HAVE_CYRUS_SASL
|
|
sasl_conn_t *ctx = conn->c_sasl_context;
|
|
|
|
if( ctx != NULL ) {
|
|
int sc;
|
|
SASL_CONST char *mechstr;
|
|
|
|
sc = sasl_listmech( ctx,
|
|
NULL, NULL, ",", NULL,
|
|
&mechstr, NULL, NULL );
|
|
|
|
if( sc != SASL_OK ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
|
|
"slap_sasl_mechs: sasl_listmech failed: %d\n", sc ));
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
|
|
sc, 0, 0 );
|
|
#endif
|
|
|
|
return NULL;
|
|
}
|
|
|
|
mechs = str2charray( mechstr, "," );
|
|
|
|
#if SASL_VERSION_MAJOR < 2
|
|
ch_free( mechstr );
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
return mechs;
|
|
}
|
|
|
|
int slap_sasl_close( Connection *conn )
|
|
{
|
|
#ifdef HAVE_CYRUS_SASL
|
|
sasl_conn_t *ctx = conn->c_sasl_context;
|
|
|
|
if( ctx != NULL ) {
|
|
sasl_dispose( &ctx );
|
|
}
|
|
|
|
conn->c_sasl_context = NULL;
|
|
|
|
free( conn->c_sasl_extra );
|
|
conn->c_sasl_extra = NULL;
|
|
#endif
|
|
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
int slap_sasl_bind(
|
|
Connection *conn,
|
|
Operation *op,
|
|
struct berval *dn,
|
|
struct berval *ndn,
|
|
struct berval *cred,
|
|
struct berval *edn,
|
|
slap_ssf_t *ssfp )
|
|
{
|
|
int rc = 1;
|
|
|
|
#ifdef HAVE_CYRUS_SASL
|
|
sasl_conn_t *ctx = conn->c_sasl_context;
|
|
struct berval response;
|
|
unsigned reslen = 0;
|
|
const char *errstr = NULL;
|
|
int sc;
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
|
|
"sasl_bind: conn %ld dn=\"%s\" mech=%s datalen=%ld\n",
|
|
conn->c_connid,
|
|
dn->bv_len ? dn->bv_val : "",
|
|
conn->c_sasl_bind_in_progress ? "<continuing>" : conn->c_sasl_bind_mech.bv_val,
|
|
cred ? cred->bv_len : 0 ));
|
|
#else
|
|
Debug(LDAP_DEBUG_ARGS,
|
|
"==> sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
|
|
dn->bv_len ? dn->bv_val : "",
|
|
conn->c_sasl_bind_in_progress ? "<continuing>":conn->c_sasl_bind_mech.bv_val,
|
|
cred ? cred->bv_len : 0 );
|
|
#endif
|
|
|
|
|
|
if( ctx == NULL ) {
|
|
send_ldap_result( conn, op, LDAP_UNAVAILABLE,
|
|
NULL, "SASL unavailable on this session", NULL, NULL );
|
|
return rc;
|
|
}
|
|
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
#define START( ctx, mech, cred, clen, resp, rlen, err ) \
|
|
sasl_server_start( ctx, mech, cred, clen, resp, rlen )
|
|
#define STEP( ctx, cred, clen, resp, rlen, err ) \
|
|
sasl_server_step( ctx, cred, clen, resp, rlen )
|
|
#else
|
|
#define START( ctx, mech, cred, clen, resp, rlen, err ) \
|
|
sasl_server_start( ctx, mech, cred, clen, resp, rlen, err )
|
|
#define STEP( ctx, cred, clen, resp, rlen, err ) \
|
|
sasl_server_step( ctx, cred, clen, resp, rlen, err )
|
|
#endif
|
|
|
|
if ( !conn->c_sasl_bind_in_progress ) {
|
|
sc = START( ctx,
|
|
conn->c_sasl_bind_mech.bv_val,
|
|
cred->bv_len ? cred->bv_val : "",
|
|
cred->bv_len,
|
|
(SASL_CONST char **)&response.bv_val, &reslen, &errstr );
|
|
|
|
} else {
|
|
sc = STEP( ctx,
|
|
cred->bv_val, cred->bv_len,
|
|
(SASL_CONST char **)&response.bv_val, &reslen, &errstr );
|
|
}
|
|
|
|
response.bv_len = reslen;
|
|
|
|
if ( sc == SASL_OK ) {
|
|
char *username = NULL;
|
|
char *realm = NULL;
|
|
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
sc = sasl_getprop( ctx, SASL_DEFUSERREALM, (const void **)&realm );
|
|
#else
|
|
sc = sasl_getprop( ctx, SASL_REALM, (void **)&realm );
|
|
#endif
|
|
sc = sasl_getprop( ctx,
|
|
SASL_USERNAME, (SASL_CONST void **)&username );
|
|
|
|
if ( sc != SASL_OK ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
|
|
"slap_sasl_bind: getprop(USERNAME) failed: %d\n", sc ));
|
|
#else
|
|
Debug(LDAP_DEBUG_TRACE,
|
|
"slap_sasl_bind: getprop(USERNAME) failed!\n",
|
|
0, 0, 0);
|
|
#endif
|
|
|
|
|
|
send_ldap_result( conn, op, rc = slap_sasl_err2ldap( sc ),
|
|
NULL, "no SASL username", NULL, NULL );
|
|
|
|
} else {
|
|
rc = slap_sasl_getdn( conn, username, realm, edn, FLAG_GETDN_FINAL );
|
|
|
|
if( rc == LDAP_SUCCESS ) {
|
|
sasl_ssf_t *ssf = NULL;
|
|
(void) sasl_getprop( ctx, SASL_SSF, (void *)&ssf );
|
|
*ssfp = ssf ? *ssf : 0;
|
|
|
|
if( *ssfp ) {
|
|
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
|
|
conn->c_sasl_layers++;
|
|
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
|
|
}
|
|
|
|
send_ldap_sasl( conn, op, rc,
|
|
NULL, NULL, NULL, NULL,
|
|
response.bv_len ? &response : NULL );
|
|
|
|
} else {
|
|
send_ldap_result( conn, op, rc,
|
|
NULL, errstr, NULL, NULL );
|
|
}
|
|
}
|
|
|
|
} else if ( sc == SASL_CONTINUE ) {
|
|
send_ldap_sasl( conn, op, rc = LDAP_SASL_BIND_IN_PROGRESS,
|
|
NULL, NULL, NULL, NULL, &response );
|
|
|
|
} else {
|
|
send_ldap_result( conn, op, rc = slap_sasl_err2ldap( sc ),
|
|
NULL, errstr, NULL, NULL );
|
|
}
|
|
|
|
#if SASL_VERSION_MAJOR < 2
|
|
if( response.bv_len ) {
|
|
ch_free( response.bv_val );
|
|
}
|
|
#endif
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
|
|
"slap_sasl_bind: rc=%d\n", rc ));
|
|
#else
|
|
Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: rc=%d\n", rc, 0, 0);
|
|
#endif
|
|
|
|
|
|
#else
|
|
send_ldap_result( conn, op, rc = LDAP_UNAVAILABLE,
|
|
NULL, "SASL not supported", NULL, NULL );
|
|
#endif
|
|
|
|
return rc;
|
|
}
|
|
|
|
char* slap_sasl_secprops( const char *in )
|
|
{
|
|
#ifdef HAVE_CYRUS_SASL
|
|
int rc = ldap_pvt_sasl_secprops( in, &sasl_secprops );
|
|
|
|
return rc == LDAP_SUCCESS ? NULL : "Invalid security properties";
|
|
#else
|
|
return "SASL not supported";
|
|
#endif
|
|
}
|