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https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
1697 lines
39 KiB
C
1697 lines
39 KiB
C
/* $OpenLDAP$ */
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/*
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* Copyright 1998-2003 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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#include <limits.h>
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#ifdef HAVE_CYRUS_SASL
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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 <sasl/saslplug.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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static sasl_security_properties_t sasl_secprops;
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#endif /* HAVE_CYRUS_SASL */
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#include "ldap_pvt.h"
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#include "lber_pvt.h"
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#include <lutil.h>
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int slap_sasl_config( int cargc, char **cargv, char *line,
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const char *fname, int lineno )
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{
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/* set SASL proxy authorization policy */
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if ( strcasecmp( cargv[0], "sasl-authz-policy" ) == 0 ) {
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if ( cargc != 2 ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONFIG, CRIT,
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"%s: line %d: missing policy in"
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" \"sasl-authz-policy <policy>\" line\n",
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fname, lineno, 0 );
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#else
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Debug( LDAP_DEBUG_ANY,
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"%s: line %d: missing policy in"
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" \"sasl-authz-policy <policy>\" line\n",
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fname, lineno, 0 );
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#endif
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return( 1 );
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}
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if ( slap_sasl_setpolicy( cargv[1] ) ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONFIG, CRIT,
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"%s: line %d: unable "
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"to parse value \"%s\" "
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"in \"sasl-authz-policy "
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"<policy>\" line.\n",
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fname, lineno, cargv[1] );
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#else
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Debug( LDAP_DEBUG_ANY,
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"%s: line %d: unable "
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"to parse value \"%s\" "
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"in \"sasl-authz-policy "
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"<policy>\" line\n",
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fname, lineno, cargv[1] );
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#endif
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return( 1 );
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}
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} else if ( !strcasecmp( cargv[0], "sasl-regexp" )
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|| !strcasecmp( cargv[0], "saslregexp" ) )
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{
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int rc;
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if ( cargc != 3 ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONFIG, CRIT,
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"%s: line %d: need 2 args in "
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"\"saslregexp <match> <replace>\"\n",
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fname, lineno, 0 );
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#else
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Debug( LDAP_DEBUG_ANY,
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"%s: line %d: need 2 args in "
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"\"saslregexp <match> <replace>\"\n",
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fname, lineno, 0 );
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#endif
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return( 1 );
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}
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rc = slap_sasl_regexp_config( cargv[1], cargv[2] );
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if ( rc ) {
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return rc;
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}
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#ifdef HAVE_CYRUS_SASL
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/* set SASL host */
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} else if ( strcasecmp( cargv[0], "sasl-host" ) == 0 ) {
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if ( cargc < 2 ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONFIG, CRIT,
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"%s: line %d: missing host in \"sasl-host <host>\" line\n",
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fname, lineno, 0 );
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#else
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Debug( LDAP_DEBUG_ANY,
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"%s: line %d: missing host in \"sasl-host <host>\" line\n",
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fname, lineno, 0 );
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#endif
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return( 1 );
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}
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if ( global_host != NULL ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONFIG, CRIT,
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"%s: line %d: already set sasl-host!\n",
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fname, lineno, 0 );
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#else
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Debug( LDAP_DEBUG_ANY,
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"%s: line %d: already set sasl-host!\n",
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fname, lineno, 0 );
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#endif
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return 1;
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} else {
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global_host = ch_strdup( cargv[1] );
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}
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/* set SASL realm */
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} else if ( strcasecmp( cargv[0], "sasl-realm" ) == 0 ) {
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if ( cargc < 2 ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONFIG, CRIT, "%s: line %d: "
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"missing realm in \"sasl-realm <realm>\" line.\n",
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fname, lineno, 0 );
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#else
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Debug( LDAP_DEBUG_ANY, "%s: line %d: "
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"missing realm in \"sasl-realm <realm>\" line.\n",
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fname, lineno, 0 );
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#endif
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return( 1 );
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}
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if ( global_realm != NULL ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONFIG, CRIT,
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"%s: line %d: already set sasl-realm!\n",
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fname, lineno, 0 );
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#else
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Debug( LDAP_DEBUG_ANY,
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"%s: line %d: already set sasl-realm!\n",
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fname, lineno, 0 );
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#endif
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return 1;
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} else {
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global_realm = ch_strdup( cargv[1] );
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}
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/* SASL security properties */
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} else if ( strcasecmp( cargv[0], "sasl-secprops" ) == 0 ) {
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char *txt;
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if ( cargc < 2 ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONFIG, CRIT, "%s: line %d: "
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"missing flags in \"sasl-secprops <properties>\" line\n",
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fname, lineno, 0 );
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#else
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Debug( LDAP_DEBUG_ANY, "%s: line %d: "
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"missing flags in \"sasl-secprops <properties>\" line\n",
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fname, lineno, 0 );
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#endif
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return 1;
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}
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txt = slap_sasl_secprops( cargv[1] );
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if ( txt != NULL ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( CONFIG, CRIT,
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"%s: line %d sasl-secprops: %s\n",
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fname, lineno, txt );
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#else
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Debug( LDAP_DEBUG_ANY,
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"%s: line %d: sasl-secprops: %s\n",
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fname, lineno, txt );
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#endif
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return 1;
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}
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#endif /* HAVE_CYRUS_SASL */
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}
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return LDAP_SUCCESS;
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}
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#ifdef HAVE_CYRUS_SASL
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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( TRANSPORT, ENTRY,
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"SASL [conn=%ld] %s: %s\n", conn ? conn->c_connid : -1, 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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#if SASL_VERSION_MAJOR >= 2
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static const char *slap_propnames[] = {
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"*slapConn", "*authcDN", "*authzDN", NULL };
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static Filter *generic_filter;
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#define PROP_CONN 0
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#define PROP_AUTHC 1
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#define PROP_AUTHZ 2
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typedef struct lookup_info {
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int last;
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int flags;
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const struct propval *list;
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sasl_server_params_t *sparams;
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} lookup_info;
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static int
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sasl_ap_lookup(
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BackendDB *be,
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Connection *conn,
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Operation *op,
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Entry *e,
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AttributeName *an,
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int attrsonly,
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LDAPControl **ctrls )
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{
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BerVarray bv;
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AttributeDescription *ad;
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Attribute *a;
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const char *text;
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int rc, i;
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slap_callback *tmp = op->o_callback;
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lookup_info *sl = tmp->sc_private;
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for( i = 0; i < sl->last; i++ ) {
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const char *name = sl->list[i].name;
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if ( name[0] == '*' ) {
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if ( sl->flags & SASL_AUXPROP_AUTHZID ) continue;
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name++;
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} else if ( !(sl->flags & SASL_AUXPROP_AUTHZID ) )
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continue;
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if ( sl->list[i].values ) {
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if ( !(sl->flags & SASL_AUXPROP_OVERRIDE) ) continue;
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}
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ad = NULL;
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rc = slap_str2ad( name, &ad, &text );
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if ( rc != LDAP_SUCCESS ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( TRANSPORT, DETAIL1,
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"slap_auxprop: str2ad(%s): %s\n", name, text, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE,
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"slap_auxprop: str2ad(%s): %s\n", name, text, 0 );
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#endif
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continue;
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}
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a = attr_find( e->e_attrs, ad );
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if ( !a ) continue;
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if ( ! access_allowed( be, conn, op, e, ad, NULL, ACL_AUTH, NULL ) )
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continue;
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if ( sl->list[i].values && ( sl->flags & SASL_AUXPROP_OVERRIDE ) )
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sl->sparams->utils->prop_erase( sl->sparams->propctx, sl->list[i].name );
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for ( bv = a->a_vals; bv->bv_val; bv++ ) {
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sl->sparams->utils->prop_set( sl->sparams->propctx, sl->list[i].name,
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bv->bv_val, bv->bv_len );
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}
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}
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return LDAP_SUCCESS;
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}
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static void
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slap_auxprop_lookup(
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void *glob_context,
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sasl_server_params_t *sparams,
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unsigned flags,
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const char *user,
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unsigned ulen)
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{
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int rc, i, doit=0;
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struct berval dn;
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Connection *conn = NULL;
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lookup_info sl;
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sl.list = sparams->utils->prop_get( sparams->propctx );
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sl.sparams = sparams;
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sl.flags = flags;
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/* Find our DN and conn first */
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for( i = 0, sl.last = 0; sl.list[i].name; i++ ) {
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if ( sl.list[i].name[0] == '*' ) {
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if ( !strcmp( sl.list[i].name, slap_propnames[PROP_CONN] ) ) {
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if ( sl.list[i].values && sl.list[i].values[0] )
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AC_MEMCPY( &conn, sl.list[i].values[0], sizeof( conn ) );
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if ( !sl.last ) sl.last = i;
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}
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if ( (flags & SASL_AUXPROP_AUTHZID) &&
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!strcmp( sl.list[i].name, slap_propnames[PROP_AUTHZ] ) ) {
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if ( sl.list[i].values && sl.list[i].values[0] )
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AC_MEMCPY( &dn, sl.list[i].values[0], sizeof( dn ) );
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if ( !sl.last ) sl.last = i;
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break;
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}
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if ( !strcmp( sl.list[i].name, slap_propnames[PROP_AUTHC] ) ) {
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if ( !sl.last ) sl.last = i;
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if ( sl.list[i].values && sl.list[i].values[0] ) {
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AC_MEMCPY( &dn, sl.list[i].values[0], sizeof( dn ) );
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if ( !(flags & SASL_AUXPROP_AUTHZID) )
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break;
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}
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}
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}
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}
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/* Now see what else needs to be fetched */
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for( i = 0; i < sl.last; i++ ) {
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const char *name = sl.list[i].name;
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if ( name[0] == '*' ) {
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if ( flags & SASL_AUXPROP_AUTHZID ) continue;
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name++;
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} else if ( !(flags & SASL_AUXPROP_AUTHZID ) )
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continue;
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if ( sl.list[i].values ) {
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if ( !(flags & SASL_AUXPROP_OVERRIDE) ) continue;
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}
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doit = 1;
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}
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if (doit) {
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Backend *be;
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Operation op = {0};
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slap_callback cb = { slap_cb_null_response,
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slap_cb_null_sresult, sasl_ap_lookup, slap_cb_null_sreference, NULL };
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cb.sc_private = &sl;
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be = select_backend( &dn, 0, 1 );
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if ( be && be->be_search ) {
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op.o_tag = LDAP_REQ_SEARCH;
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op.o_protocol = LDAP_VERSION3;
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op.o_ndn = conn->c_ndn;
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op.o_callback = &cb;
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op.o_time = slap_get_time();
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op.o_do_not_cache = 1;
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op.o_threadctx = conn->c_sasl_bindop->o_threadctx;
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(*be->be_search)( be, conn, &op, NULL, &dn,
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LDAP_SCOPE_BASE, LDAP_DEREF_NEVER, 1, 0,
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generic_filter, NULL, NULL, 0 );
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}
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}
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}
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static sasl_auxprop_plug_t slap_auxprop_plugin = {
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0, /* Features */
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0, /* spare */
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NULL, /* glob_context */
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NULL, /* auxprop_free */
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slap_auxprop_lookup,
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"slapd", /* name */
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NULL /* spare */
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};
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static int
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slap_auxprop_init(
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const sasl_utils_t *utils,
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int max_version,
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int *out_version,
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sasl_auxprop_plug_t **plug,
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const char *plugname)
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{
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if ( !out_version | !plug ) return SASL_BADPARAM;
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if ( max_version < SASL_AUXPROP_PLUG_VERSION ) return SASL_BADVERS;
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*out_version = SASL_AUXPROP_PLUG_VERSION;
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*plug = &slap_auxprop_plugin;
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return SASL_OK;
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}
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typedef struct checkpass_info {
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int rc;
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struct berval cred;
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} checkpass_info;
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static int
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sasl_cb_checkpass(
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BackendDB *be,
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Connection *conn,
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Operation *op,
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Entry *e,
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AttributeName *an,
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int attrsonly,
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LDAPControl **ctrls )
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{
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slap_callback *tmp = op->o_callback;
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checkpass_info *ci = tmp->sc_private;
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Attribute *a;
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struct berval *bv;
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ci->rc = SASL_NOVERIFY;
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a = attr_find( e->e_attrs, slap_schema.si_ad_userPassword );
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if ( !a ) return 0;
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if ( ! access_allowed( be, conn, op, e, slap_schema.si_ad_userPassword,
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NULL, ACL_AUTH, NULL ) ) return 0;
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for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
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if ( !lutil_passwd( bv, &ci->cred, NULL ) ) {
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ci->rc = SASL_OK;
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break;
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}
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}
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return 0;
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}
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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;
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int rc;
|
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Backend *be;
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checkpass_info ci;
|
|
|
|
ci.rc = SASL_NOUSER;
|
|
|
|
/* SASL will fallback to its own mechanisms if we don't
|
|
* find an answer here.
|
|
*/
|
|
|
|
rc = slap_sasl_getdn( conn, (char *)username, 0, NULL, &dn,
|
|
SLAP_GETDN_AUTHCID );
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
sasl_seterror( sconn, 0, ldap_err2string( rc ) );
|
|
return SASL_NOUSER;
|
|
}
|
|
|
|
if ( dn.bv_len == 0 ) {
|
|
sasl_seterror( sconn, 0,
|
|
"No password is associated with the Root DSE" );
|
|
if ( dn.bv_val != NULL ) {
|
|
ch_free( dn.bv_val );
|
|
}
|
|
return SASL_NOUSER;
|
|
}
|
|
|
|
be = select_backend( &dn, 0, 1 );
|
|
if ( be && be->be_search ) {
|
|
Operation op = {0};
|
|
slap_callback cb = { slap_cb_null_response,
|
|
slap_cb_null_sresult, sasl_cb_checkpass, slap_cb_null_sreference, NULL };
|
|
|
|
ci.cred.bv_val = (char *)pass;
|
|
ci.cred.bv_len = passlen;
|
|
|
|
cb.sc_private = &ci;
|
|
op.o_tag = LDAP_REQ_SEARCH;
|
|
op.o_protocol = LDAP_VERSION3;
|
|
op.o_ndn = conn->c_ndn;
|
|
op.o_callback = &cb;
|
|
op.o_time = slap_get_time();
|
|
op.o_do_not_cache = 1;
|
|
op.o_threadctx = conn->c_sasl_bindop->o_threadctx;
|
|
|
|
(*be->be_search)( be, conn, &op, NULL, &dn,
|
|
LDAP_SCOPE_BASE, LDAP_DEREF_NEVER, 1, 0,
|
|
generic_filter, NULL, NULL, 0 );
|
|
}
|
|
if ( ci.rc != SASL_OK ) {
|
|
sasl_seterror( sconn, 0,
|
|
ldap_err2string( LDAP_INVALID_CREDENTIALS ) );
|
|
}
|
|
|
|
ch_free( dn.bv_val );
|
|
|
|
return ci.rc;
|
|
}
|
|
|
|
/* Convert a SASL authcid or authzid into a DN. Store the DN in an
|
|
* auxiliary property, so that we can refer to it in sasl_authorize
|
|
* without interfering with anything else. Also, the SASL username
|
|
* buffer is constrained to 256 characters, and our DNs could be
|
|
* much longer (totally arbitrary length)...
|
|
*/
|
|
static int
|
|
slap_sasl_canonicalize(
|
|
sasl_conn_t *sconn,
|
|
void *context,
|
|
const char *in,
|
|
unsigned inlen,
|
|
unsigned flags,
|
|
const char *user_realm,
|
|
char *out,
|
|
unsigned out_max,
|
|
unsigned *out_len)
|
|
{
|
|
Connection *conn = (Connection *)context;
|
|
struct propctx *props = sasl_auxprop_getctx( sconn );
|
|
struct propval auxvals[3];
|
|
struct berval dn;
|
|
int rc, which;
|
|
const char *names[2];
|
|
|
|
*out_len = 0;
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ENTRY,
|
|
"slap_sasl_canonicalize: conn %d %s=\"%s\"\n",
|
|
conn ? conn->c_connid : -1,
|
|
(flags & SASL_CU_AUTHID) ? "authcid" : "authzid",
|
|
in ? in : "<empty>");
|
|
#else
|
|
Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: %s=\"%s\"\n",
|
|
conn ? conn->c_connid : -1,
|
|
(flags & SASL_CU_AUTHID) ? "authcid" : "authzid",
|
|
in ? in : "<empty>");
|
|
#endif
|
|
|
|
/* If name is too big, just truncate. We don't care, we're
|
|
* using DNs, not the usernames.
|
|
*/
|
|
if ( inlen > out_max )
|
|
inlen = out_max-1;
|
|
|
|
/* See if we need to add request, can only do it once */
|
|
prop_getnames( props, slap_propnames, auxvals );
|
|
if ( !auxvals[0].name )
|
|
prop_request( props, slap_propnames );
|
|
|
|
if ( flags & SASL_CU_AUTHID )
|
|
which = PROP_AUTHC;
|
|
else
|
|
which = PROP_AUTHZ;
|
|
|
|
/* Need to store the Connection for auxprop_lookup */
|
|
if ( !auxvals[PROP_CONN].values ) {
|
|
names[0] = slap_propnames[PROP_CONN];
|
|
names[1] = NULL;
|
|
prop_set( props, names[0], (char *)&conn, sizeof( conn ) );
|
|
}
|
|
|
|
/* Already been here? */
|
|
if ( auxvals[which].values )
|
|
goto done;
|
|
|
|
/* Normally we require an authzID to have a u: or dn: prefix.
|
|
* However, SASL frequently gives us an authzID that is just
|
|
* an exact copy of the authcID, without a prefix. We need to
|
|
* detect and allow this condition. If SASL calls canonicalize
|
|
* with SASL_CU_AUTHID|SASL_CU_AUTHZID this is a no-brainer.
|
|
* But if it's broken into two calls, we need to remember the
|
|
* authcID so that we can compare the authzID later. We store
|
|
* the authcID temporarily in conn->c_sasl_dn. We necessarily
|
|
* finish Canonicalizing before Authorizing, so there is no
|
|
* conflict with slap_sasl_authorize's use of this temp var.
|
|
*
|
|
* The SASL EXTERNAL mech is backwards from all the other mechs,
|
|
* it does authzID before the authcID. If we see that authzID
|
|
* has already been done, don't do anything special with authcID.
|
|
*/
|
|
if ( flags == SASL_CU_AUTHID && !auxvals[PROP_AUTHZ].values ) {
|
|
conn->c_sasl_dn.bv_val = (char *) in;
|
|
} else if ( flags == SASL_CU_AUTHZID && conn->c_sasl_dn.bv_val ) {
|
|
rc = strcmp( in, conn->c_sasl_dn.bv_val );
|
|
conn->c_sasl_dn.bv_val = NULL;
|
|
/* They were equal, no work needed */
|
|
if ( !rc ) goto done;
|
|
}
|
|
|
|
rc = slap_sasl_getdn( conn, (char *)in, inlen, (char *)user_realm, &dn,
|
|
(flags & SASL_CU_AUTHID) ? SLAP_GETDN_AUTHCID : SLAP_GETDN_AUTHZID );
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
sasl_seterror( sconn, 0, ldap_err2string( rc ) );
|
|
return SASL_NOAUTHZ;
|
|
}
|
|
|
|
names[0] = slap_propnames[which];
|
|
names[1] = NULL;
|
|
|
|
prop_set( props, names[0], (char *)&dn, sizeof( dn ) );
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ENTRY,
|
|
"slap_sasl_canonicalize: conn %d %s=\"%s\"\n",
|
|
conn ? conn->c_connid : -1, names[0]+1,
|
|
dn.bv_val ? dn.bv_val : "<EMPTY>" );
|
|
#else
|
|
Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: %s=\"%s\"\n",
|
|
conn ? conn->c_connid : -1, names[0]+1,
|
|
dn.bv_val ? dn.bv_val : "<EMPTY>" );
|
|
#endif
|
|
|
|
done:
|
|
AC_MEMCPY( out, in, inlen );
|
|
out[inlen] = '\0';
|
|
|
|
*out_len = inlen;
|
|
|
|
return SASL_OK;
|
|
}
|
|
|
|
static int
|
|
slap_sasl_authorize(
|
|
sasl_conn_t *sconn,
|
|
void *context,
|
|
char *requested_user,
|
|
unsigned rlen,
|
|
char *auth_identity,
|
|
unsigned alen,
|
|
const char *def_realm,
|
|
unsigned urlen,
|
|
struct propctx *props)
|
|
{
|
|
Connection *conn = (Connection *)context;
|
|
struct propval auxvals[3];
|
|
struct berval authcDN, authzDN;
|
|
int rc;
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ENTRY,
|
|
"slap_sasl_authorize: conn %d authcid=\"%s\" authzid=\"%s\"\n",
|
|
conn ? conn->c_connid : -1, auth_identity, requested_user);
|
|
#else
|
|
Debug( LDAP_DEBUG_ARGS, "SASL Authorize [conn=%ld]: "
|
|
"authcid=\"%s\" authzid=\"%s\"\n",
|
|
conn ? conn->c_connid : -1, auth_identity, requested_user );
|
|
#endif
|
|
if ( conn->c_sasl_dn.bv_val ) {
|
|
ch_free( conn->c_sasl_dn.bv_val );
|
|
conn->c_sasl_dn.bv_val = NULL;
|
|
conn->c_sasl_dn.bv_len = 0;
|
|
}
|
|
|
|
/* Skip PROP_CONN */
|
|
prop_getnames( props, slap_propnames+1, auxvals );
|
|
|
|
AC_MEMCPY( &authcDN, auxvals[0].values[0], sizeof(authcDN) );
|
|
|
|
/* Nothing to do if no authzID was given */
|
|
if ( !auxvals[1].name || !auxvals[1].values ) {
|
|
conn->c_sasl_dn = authcDN;
|
|
goto ok;
|
|
}
|
|
|
|
AC_MEMCPY( &authzDN, auxvals[1].values[0], sizeof(authzDN) );
|
|
|
|
rc = slap_sasl_authorized( conn, &authcDN, &authzDN );
|
|
ch_free( authcDN.bv_val );
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, INFO,
|
|
"slap_sasl_authorize: conn %ld authorization disallowed (%d)\n",
|
|
(long)(conn ? conn->c_connid : -1), rc, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
|
|
" authorization disallowed (%d)\n",
|
|
(long) (conn ? conn->c_connid : -1), rc, 0 );
|
|
#endif
|
|
|
|
sasl_seterror( sconn, 0, "not authorized" );
|
|
ch_free( authzDN.bv_val );
|
|
return SASL_NOAUTHZ;
|
|
}
|
|
|
|
conn->c_sasl_dn = authzDN;
|
|
ok:
|
|
if (conn->c_sasl_bindop) {
|
|
Statslog( LDAP_DEBUG_STATS,
|
|
"conn=%lu op=%lu BIND authcid=\"%s\"\n",
|
|
conn->c_connid, conn->c_sasl_bindop->o_opid,
|
|
auth_identity, 0, 0);
|
|
}
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ENTRY,
|
|
"slap_sasl_authorize: conn %d authorization allowed\n",
|
|
(long)(conn ? conn->c_connid : -1), 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
|
|
" authorization allowed\n",
|
|
(long) (conn ? conn->c_connid : -1), 0, 0 );
|
|
#endif
|
|
return SASL_OK;
|
|
}
|
|
#else
|
|
static int
|
|
slap_sasl_authorize(
|
|
void *context,
|
|
char *authcid,
|
|
char *authzid,
|
|
const char **user,
|
|
const char **errstr)
|
|
{
|
|
struct berval authcDN, authzDN;
|
|
int rc;
|
|
Connection *conn = context;
|
|
char *realm;
|
|
|
|
*user = NULL;
|
|
if ( conn->c_sasl_dn.bv_val ) {
|
|
ch_free( conn->c_sasl_dn.bv_val );
|
|
conn->c_sasl_dn.bv_val = NULL;
|
|
conn->c_sasl_dn.bv_len = 0;
|
|
}
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ENTRY,
|
|
"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( TRANSPORT, ERR,
|
|
"slap_sasl_authorize: getprop(REALM) failed.\n", 0, 0, 0 );
|
|
#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, 0, realm,
|
|
&authcDN, SLAP_GETDN_AUTHCID );
|
|
if( rc != LDAP_SUCCESS ) {
|
|
*errstr = ldap_err2string( rc );
|
|
return SASL_NOAUTHZ;
|
|
}
|
|
if( ( authzid == NULL ) || !strcmp( authcid,authzid ) ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ENTRY,
|
|
"slap_sasl_authorize: conn %d Using authcDN=%s\n",
|
|
conn ? conn->c_connid : -1, authcDN.bv_val, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
|
|
"Using authcDN=%s\n", (long) (conn ? conn->c_connid : -1), authcDN.bv_val,0 );
|
|
#endif
|
|
|
|
conn->c_sasl_dn = authcDN;
|
|
goto ok;
|
|
}
|
|
rc = slap_sasl_getdn( conn, (char *)authzid, 0, realm,
|
|
&authzDN, SLAP_GETDN_AUTHZID );
|
|
if( rc != LDAP_SUCCESS ) {
|
|
ch_free( authcDN.bv_val );
|
|
*errstr = ldap_err2string( rc );
|
|
return SASL_NOAUTHZ;
|
|
}
|
|
|
|
rc = slap_sasl_authorized(conn, &authcDN, &authzDN );
|
|
ch_free( authcDN.bv_val );
|
|
if( rc ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, INFO,
|
|
"slap_sasl_authorize: conn %ld authorization disallowed (%d)\n",
|
|
(long)(conn ? conn->c_connid : -1), rc, 0 );
|
|
#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( authzDN.bv_val );
|
|
return SASL_NOAUTHZ;
|
|
}
|
|
conn->c_sasl_dn = authzDN;
|
|
|
|
ok:
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, RESULTS,
|
|
"slap_sasl_authorize: conn %d authorization allowed\n",
|
|
(long)(conn ? conn->c_connid : -1 ), 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
|
|
" authorization allowed\n",
|
|
(long) (conn ? conn->c_connid : -1), 0, 0 );
|
|
#endif
|
|
|
|
if (conn->c_sasl_bindop) {
|
|
Statslog( LDAP_DEBUG_STATS,
|
|
"conn=%lu op=%lu BIND authcid=\"%s\"\n",
|
|
conn->c_connid, conn->c_sasl_bindop->o_opid,
|
|
authcid, 0, 0);
|
|
}
|
|
|
|
*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 }
|
|
};
|
|
|
|
#ifdef HAVE_SASL_VERSION
|
|
#define SASL_BUILD_VERSION ((SASL_VERSION_MAJOR << 24) |\
|
|
(SASL_VERSION_MINOR << 16) | SASL_VERSION_STEP)
|
|
|
|
sasl_version( NULL, &rc );
|
|
if ( ((rc >> 16) != ((SASL_VERSION_MAJOR << 8)|SASL_VERSION_MINOR)) ||
|
|
(rc & 0xffff) < SASL_VERSION_STEP) {
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, INFO,
|
|
"slap_sasl_init: SASL version mismatch, got %x, wanted %x.\n",
|
|
rc, SASL_BUILD_VERSION, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"slap_sasl_init: SASL version mismatch, got %x, wanted %x.\n",
|
|
rc, SASL_BUILD_VERSION, 0 );
|
|
#endif
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
/* SASL 2 does its own memory management internally */
|
|
#if SASL_VERSION_MAJOR < 2
|
|
sasl_set_alloc(
|
|
ber_memalloc,
|
|
ber_memcalloc,
|
|
ber_memrealloc,
|
|
ber_memfree );
|
|
#endif
|
|
|
|
sasl_set_mutex(
|
|
ldap_pvt_sasl_mutex_new,
|
|
ldap_pvt_sasl_mutex_lock,
|
|
ldap_pvt_sasl_mutex_unlock,
|
|
ldap_pvt_sasl_mutex_dispose );
|
|
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
sasl_auxprop_add_plugin( "slapd", slap_auxprop_init );
|
|
#endif
|
|
/* 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( TRANSPORT, INFO, "slap_sasl_init: init failed.\n", 0, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "sasl_server_init failed\n",
|
|
0, 0, 0 );
|
|
#endif
|
|
#if SASL_VERSION_MAJOR < 2
|
|
/* A no-op used to make sure we linked with Cyrus 1.5 */
|
|
sasl_client_auth( NULL, NULL, NULL, 0, NULL, NULL );
|
|
#endif
|
|
|
|
return -1;
|
|
}
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, INFO, "slap_sasl_init: initialized!\n", 0, 0, 0 );
|
|
#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
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
filter_free( generic_filter );
|
|
#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
|
|
SLAP_CALLOC( 5, sizeof(sasl_callback_t));
|
|
#else
|
|
SLAP_CALLOC( 3, sizeof(sasl_callback_t));
|
|
#endif
|
|
if( session_callbacks == NULL ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ERR,
|
|
"slap_sasl_open: SLAP_MALLOC failed", 0, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"slap_sasl_open: SLAP_MALLOC failed", 0, 0, 0 );
|
|
#endif
|
|
return -1;
|
|
}
|
|
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 ( generic_filter == NULL ) {
|
|
generic_filter = str2filter( "(objectclass=*)" );
|
|
}
|
|
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, SASL_SUCCESS_DATA, &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( TRANSPORT, ERR,
|
|
"slap_sasl_open: sasl_server_new failed: %d\n", sc, 0, 0 );
|
|
#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( TRANSPORT, ERR,
|
|
"slap_sasl_open: sasl_setprop failed: %d \n", sc, 0, 0 );
|
|
#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( TRANSPORT, ERR,
|
|
"slap_sasl_mechs: sasl_listmech failed: %d\n", sc, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
|
|
sc, 0, 0 );
|
|
#endif
|
|
|
|
return NULL;
|
|
}
|
|
|
|
mechs = ldap_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( TRANSPORT, ENTRY,
|
|
"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 );
|
|
#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_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 ) {
|
|
sasl_ssf_t *ssf = NULL;
|
|
|
|
*edn = conn->c_sasl_dn;
|
|
conn->c_sasl_dn.bv_val = NULL;
|
|
conn->c_sasl_dn.bv_len = 0;
|
|
|
|
rc = LDAP_SUCCESS;
|
|
|
|
(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 if ( sc == SASL_CONTINUE ) {
|
|
send_ldap_sasl( conn, op, rc = LDAP_SASL_BIND_IN_PROGRESS,
|
|
NULL, NULL, NULL, NULL, &response );
|
|
|
|
} else {
|
|
#if SASL_VERSION_MAJOR >= 2
|
|
errstr = sasl_errdetail( ctx );
|
|
#endif
|
|
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( TRANSPORT, RESULTS, "slap_sasl_bind: rc=%d\n", rc, 0, 0 );
|
|
#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
|
|
}
|
|
|
|
#ifdef HAVE_CYRUS_SASL
|
|
int
|
|
slap_sasl_setpass(
|
|
Connection *conn,
|
|
Operation *op,
|
|
const char *reqoid,
|
|
struct berval *reqdata,
|
|
char **rspoid,
|
|
struct berval **rspdata,
|
|
LDAPControl *** rspctrls,
|
|
const char **text )
|
|
{
|
|
int rc;
|
|
struct berval id = { 0, NULL }; /* needs to come from connection */
|
|
struct berval new = { 0, NULL };
|
|
struct berval old = { 0, NULL };
|
|
|
|
assert( reqoid != NULL );
|
|
assert( strcmp( LDAP_EXOP_MODIFY_PASSWD, reqoid ) == 0 );
|
|
|
|
rc = sasl_getprop( conn->c_sasl_context, SASL_USERNAME,
|
|
(SASL_CONST void **)&id.bv_val );
|
|
|
|
if( rc != SASL_OK ) {
|
|
*text = "unable to retrieve SASL username";
|
|
rc = LDAP_OTHER;
|
|
goto done;
|
|
}
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( BACKEND, ENTRY,
|
|
"slap_sasl_setpass: \"%s\"\n",
|
|
id.bv_val ? id.bv_val : "", 0, 0);
|
|
#else
|
|
Debug( LDAP_DEBUG_ARGS, "==> slap_sasl_setpass: \"%s\"\n",
|
|
id.bv_val ? id.bv_val : "", 0, 0 );
|
|
#endif
|
|
|
|
rc = slap_passwd_parse( reqdata,
|
|
NULL, &old, &new, text );
|
|
|
|
if( rc != LDAP_SUCCESS ) {
|
|
goto done;
|
|
}
|
|
|
|
if( new.bv_len == 0 ) {
|
|
slap_passwd_generate(&new);
|
|
|
|
if( new.bv_len == 0 ) {
|
|
*text = "password generation failed.";
|
|
rc = LDAP_OTHER;
|
|
goto done;
|
|
}
|
|
|
|
*rspdata = slap_passwd_return( &new );
|
|
}
|
|
|
|
#if SASL_VERSION_MAJOR < 2
|
|
rc = sasl_setpass( conn->c_sasl_context,
|
|
id.bv_val, new.bv_val, new.bv_len, 0, text );
|
|
#else
|
|
rc = sasl_setpass( conn->c_sasl_context, id.bv_val,
|
|
new.bv_val, new.bv_len, old.bv_val, old.bv_len, 0 );
|
|
if( rc != SASL_OK ) {
|
|
*text = sasl_errdetail( conn->c_sasl_context );
|
|
}
|
|
#endif
|
|
switch(rc) {
|
|
case SASL_OK:
|
|
rc = LDAP_SUCCESS;
|
|
break;
|
|
|
|
case SASL_NOCHANGE:
|
|
case SASL_NOMECH:
|
|
case SASL_DISABLED:
|
|
case SASL_PWLOCK:
|
|
case SASL_FAIL:
|
|
case SASL_BADPARAM:
|
|
default:
|
|
rc = LDAP_OTHER;
|
|
}
|
|
|
|
done:
|
|
return rc;
|
|
}
|
|
#endif /* HAVE_CYRUS_SASL */
|
|
|
|
/* Take any sort of identity string and return a DN with the "dn:" prefix. The
|
|
string returned in *dn is in its own allocated memory, and must be free'd
|
|
by the calling process.
|
|
-Mark Adamson, Carnegie Mellon
|
|
|
|
The "dn:" prefix is no longer used anywhere inside slapd. It is only used
|
|
on strings passed in directly from SASL.
|
|
-Howard Chu, Symas Corp.
|
|
*/
|
|
|
|
#define SET_DN 1
|
|
#define SET_U 2
|
|
|
|
static struct berval ext_bv = BER_BVC( "EXTERNAL" );
|
|
|
|
int slap_sasl_getdn( Connection *conn, char *id, int len,
|
|
char *user_realm, struct berval *dn, int flags )
|
|
{
|
|
char *c1;
|
|
int rc, is_dn = 0, do_norm = 1;
|
|
struct berval dn2;
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ENTRY,
|
|
"slap_sasl_getdn: conn %d id=%s\n",
|
|
conn ? conn->c_connid : -1, id ? (*id ? id : "<empty>") : "NULL", 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ARGS, "slap_sasl_getdn: id=%s\n",
|
|
id?(*id?id:"<empty>"):"NULL",0,0 );
|
|
#endif
|
|
|
|
dn->bv_val = NULL;
|
|
dn->bv_len = 0;
|
|
|
|
if ( id ) {
|
|
if ( len == 0 ) len = strlen( id );
|
|
|
|
/* Blatantly anonymous ID */
|
|
if ( len == sizeof("anonymous") - 1 &&
|
|
!strcasecmp( id, "anonymous" ) ) {
|
|
return( LDAP_SUCCESS );
|
|
}
|
|
} else {
|
|
len = 0;
|
|
}
|
|
|
|
/* An authcID needs to be converted to authzID form. Set the
|
|
* values directly into *dn; they will be normalized later. (and
|
|
* normalizing always makes a new copy.) An ID from a TLS certificate
|
|
* is already normalized, so copy it and skip normalization.
|
|
*/
|
|
if( flags & SLAP_GETDN_AUTHCID ) {
|
|
if( conn->c_sasl_bind_mech.bv_len == ext_bv.bv_len &&
|
|
strcasecmp( ext_bv.bv_val, conn->c_sasl_bind_mech.bv_val ) == 0 )
|
|
{
|
|
/* EXTERNAL DNs are already normalized */
|
|
do_norm = 0;
|
|
is_dn = SET_DN;
|
|
ber_str2bv( id, len, 1, dn );
|
|
|
|
} else {
|
|
/* convert to u:<username> form */
|
|
is_dn = SET_U;
|
|
dn->bv_val = id;
|
|
dn->bv_len = len;
|
|
}
|
|
}
|
|
if( !is_dn ) {
|
|
if( !strncasecmp( id, "u:", sizeof("u:")-1 )) {
|
|
is_dn = SET_U;
|
|
dn->bv_val = id+2;
|
|
dn->bv_len = len-2;
|
|
} else if ( !strncasecmp( id, "dn:", sizeof("dn:")-1) ) {
|
|
is_dn = SET_DN;
|
|
dn->bv_val = id+3;
|
|
dn->bv_len = len-3;
|
|
}
|
|
}
|
|
|
|
/* No other possibilities from here */
|
|
if( !is_dn ) {
|
|
dn->bv_val = NULL;
|
|
dn->bv_len = 0;
|
|
return( LDAP_INAPPROPRIATE_AUTH );
|
|
}
|
|
|
|
/* Username strings */
|
|
if( is_dn == SET_U ) {
|
|
char *p, *realm;
|
|
len = dn->bv_len + sizeof("uid=")-1 + sizeof(",cn=auth")-1;
|
|
|
|
/* username may have embedded realm name */
|
|
if( ( realm = strchr( dn->bv_val, '@') ) ) {
|
|
*realm++ = '\0';
|
|
len += sizeof(",cn=")-2;
|
|
} else if( user_realm && *user_realm ) {
|
|
len += strlen( user_realm ) + sizeof(",cn=")-1;
|
|
}
|
|
|
|
if( conn->c_sasl_bind_mech.bv_len ) {
|
|
len += conn->c_sasl_bind_mech.bv_len + sizeof(",cn=")-1;
|
|
}
|
|
|
|
/* Build the new dn */
|
|
c1 = dn->bv_val;
|
|
dn->bv_val = SLAP_MALLOC( len+1 );
|
|
if( dn->bv_val == NULL ) {
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ERR,
|
|
"slap_sasl_getdn: SLAP_MALLOC failed", 0, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"slap_sasl_getdn: SLAP_MALLOC failed", 0, 0, 0 );
|
|
#endif
|
|
return LDAP_OTHER;
|
|
}
|
|
p = lutil_strcopy( dn->bv_val, "uid=" );
|
|
p = lutil_strncopy( p, c1, dn->bv_len );
|
|
|
|
if( realm ) {
|
|
int rlen = dn->bv_len - ( realm - c1 );
|
|
p = lutil_strcopy( p, ",cn=" );
|
|
p = lutil_strncopy( p, realm, rlen );
|
|
realm[-1] = '@';
|
|
} else if( user_realm && *user_realm ) {
|
|
p = lutil_strcopy( p, ",cn=" );
|
|
p = lutil_strcopy( p, user_realm );
|
|
}
|
|
|
|
if( conn->c_sasl_bind_mech.bv_len ) {
|
|
p = lutil_strcopy( p, ",cn=" );
|
|
p = lutil_strcopy( p, conn->c_sasl_bind_mech.bv_val );
|
|
}
|
|
p = lutil_strcopy( p, ",cn=auth" );
|
|
dn->bv_len = p - dn->bv_val;
|
|
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ENTRY,
|
|
"slap_sasl_getdn: u:id converted to %s.\n", dn->bv_val, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "getdn: u:id converted to %s\n", dn->bv_val,0,0 );
|
|
#endif
|
|
}
|
|
|
|
/* All strings are in DN form now. Normalize if needed. */
|
|
if ( do_norm ) {
|
|
rc = dnNormalize2( NULL, dn, &dn2 );
|
|
|
|
/* User DNs were constructed above and must be freed now */
|
|
if ( is_dn == SET_U )
|
|
ch_free( dn->bv_val );
|
|
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
dn->bv_val = NULL;
|
|
dn->bv_len = 0;
|
|
return rc;
|
|
}
|
|
*dn = dn2;
|
|
}
|
|
|
|
/* Run thru regexp */
|
|
slap_sasl2dn( conn, dn, &dn2 );
|
|
if( dn2.bv_val ) {
|
|
ch_free( dn->bv_val );
|
|
*dn = dn2;
|
|
#ifdef NEW_LOGGING
|
|
LDAP_LOG( TRANSPORT, ENTRY,
|
|
"slap_sasl_getdn: dn:id converted to %s.\n", dn->bv_val, 0, 0 );
|
|
#else
|
|
Debug( LDAP_DEBUG_TRACE, "getdn: dn:id converted to %s\n",
|
|
dn->bv_val, 0, 0 );
|
|
#endif
|
|
}
|
|
|
|
return( LDAP_SUCCESS );
|
|
}
|