version 1.19, 2000/05/11 18:16:29
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version 1.64.2.7, 2009/10/31 00:11:22
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/* $OpenLDAP: pkg/ldap/libraries/libldap/sasl.c,v 1.18 2000/05/10 23:40:02 kurt Exp $ */ |
/* $OpenLDAP$ */ |
/* |
/* This work is part of OpenLDAP Software <http://www.openldap.org/>. |
* Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved. |
* |
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file |
* Copyright 1998-2009 The OpenLDAP Foundation. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted only as authorized by the OpenLDAP |
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* Public License. |
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* |
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* A copy of this license is available in the file LICENSE in the |
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* top-level directory of the distribution or, alternatively, at |
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* <http://www.OpenLDAP.org/license.html>. |
*/ |
*/ |
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/* |
/* |
Line 10
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Line 19
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* name DistinguishedName, -- who |
* name DistinguishedName, -- who |
* authentication CHOICE { |
* authentication CHOICE { |
* simple [0] OCTET STRING -- passwd |
* simple [0] OCTET STRING -- passwd |
#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND |
* krbv42ldap [1] OCTET STRING -- OBSOLETE |
* krbv42ldap [1] OCTET STRING |
* krbv42dsa [2] OCTET STRING -- OBSOLETE |
* krbv42dsa [2] OCTET STRING |
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#endif |
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* sasl [3] SaslCredentials -- LDAPv3 |
* sasl [3] SaslCredentials -- LDAPv3 |
* } |
* } |
* } |
* } |
Line 30
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Line 37
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#include <stdio.h> |
#include <stdio.h> |
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#include <ac/socket.h> |
#include <ac/socket.h> |
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#include <ac/stdlib.h> |
#include <ac/string.h> |
#include <ac/string.h> |
#include <ac/time.h> |
#include <ac/time.h> |
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#include <ac/errno.h> |
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#include "ldap-int.h" |
#include "ldap-int.h" |
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/* |
/* |
* ldap_sasl_bind - bind to the ldap server (and X.500). |
* ldap_sasl_bind - bind to the ldap server (and X.500). |
* The dn (usually NULL), mechanism, and credentials are provided. |
* The dn (usually NULL), mechanism, and credentials are provided. |
Line 59 ldap_sasl_bind(
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Line 67 ldap_sasl_bind(
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{ |
{ |
BerElement *ber; |
BerElement *ber; |
int rc; |
int rc; |
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ber_int_t id; |
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Debug( LDAP_DEBUG_TRACE, "ldap_sasl_bind\n", 0, 0, 0 ); |
Debug( LDAP_DEBUG_TRACE, "ldap_sasl_bind\n", 0, 0, 0 ); |
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Line 66 ldap_sasl_bind(
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Line 75 ldap_sasl_bind(
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assert( LDAP_VALID( ld ) ); |
assert( LDAP_VALID( ld ) ); |
assert( msgidp != NULL ); |
assert( msgidp != NULL ); |
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if( msgidp == NULL ) { |
/* check client controls */ |
ld->ld_errno = LDAP_PARAM_ERROR; |
rc = ldap_int_client_controls( ld, cctrls ); |
return ld->ld_errno; |
if( rc != LDAP_SUCCESS ) return rc; |
} |
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if( mechanism == LDAP_SASL_SIMPLE ) { |
if( mechanism == LDAP_SASL_SIMPLE ) { |
if( dn == NULL && cred != NULL ) { |
if( dn == NULL && cred != NULL && cred->bv_len ) { |
/* use default binddn */ |
/* use default binddn */ |
dn = ld->ld_defbinddn; |
dn = ld->ld_defbinddn; |
} |
} |
Line 92 ldap_sasl_bind(
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Line 100 ldap_sasl_bind(
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return ld->ld_errno; |
return ld->ld_errno; |
} |
} |
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assert( BER_VALID( ber ) ); |
assert( LBER_VALID( ber ) ); |
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LDAP_NEXT_MSGID( ld, id ); |
if( mechanism == LDAP_SASL_SIMPLE ) { |
if( mechanism == LDAP_SASL_SIMPLE ) { |
/* simple bind */ |
/* simple bind */ |
rc = ber_printf( ber, "{it{istO}" /*}*/, |
rc = ber_printf( ber, "{it{istON}" /*}*/, |
++ld->ld_msgid, LDAP_REQ_BIND, |
id, LDAP_REQ_BIND, |
ld->ld_version, dn, LDAP_AUTH_SIMPLE, |
ld->ld_version, dn, LDAP_AUTH_SIMPLE, |
cred ); |
cred ); |
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} else if ( cred == NULL ) { |
} else if ( cred == NULL || cred->bv_val == NULL ) { |
/* SASL bind w/o creditials */ |
/* SASL bind w/o credentials */ |
rc = ber_printf( ber, "{it{ist{s}}" /*}*/, |
rc = ber_printf( ber, "{it{ist{sN}N}" /*}*/, |
++ld->ld_msgid, LDAP_REQ_BIND, |
id, LDAP_REQ_BIND, |
ld->ld_version, dn, LDAP_AUTH_SASL, |
ld->ld_version, dn, LDAP_AUTH_SASL, |
mechanism ); |
mechanism ); |
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} else { |
} else { |
/* SASL bind w/ creditials */ |
/* SASL bind w/ credentials */ |
rc = ber_printf( ber, "{it{ist{sO}}" /*}*/, |
rc = ber_printf( ber, "{it{ist{sON}N}" /*}*/, |
++ld->ld_msgid, LDAP_REQ_BIND, |
id, LDAP_REQ_BIND, |
ld->ld_version, dn, LDAP_AUTH_SASL, |
ld->ld_version, dn, LDAP_AUTH_SASL, |
mechanism, cred ); |
mechanism, cred ); |
} |
} |
Line 128 ldap_sasl_bind(
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Line 137 ldap_sasl_bind(
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return ld->ld_errno; |
return ld->ld_errno; |
} |
} |
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if ( ber_printf( ber, /*{*/ "}" ) == -1 ) { |
if ( ber_printf( ber, /*{*/ "N}" ) == -1 ) { |
ld->ld_errno = LDAP_ENCODING_ERROR; |
ld->ld_errno = LDAP_ENCODING_ERROR; |
ber_free( ber, 1 ); |
ber_free( ber, 1 ); |
return ld->ld_errno; |
return ld->ld_errno; |
} |
} |
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#ifndef LDAP_NOCACHE |
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if ( ld->ld_cache != NULL ) { |
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ldap_flush_cache( ld ); |
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} |
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#endif /* !LDAP_NOCACHE */ |
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/* send the message */ |
/* send the message */ |
*msgidp = ldap_send_initial_request( ld, LDAP_REQ_BIND, dn, ber ); |
*msgidp = ldap_send_initial_request( ld, LDAP_REQ_BIND, dn, ber, id ); |
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if(*msgidp < 0) |
if(*msgidp < 0) |
return ld->ld_errno; |
return ld->ld_errno; |
Line 181 ldap_sasl_bind_s(
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Line 185 ldap_sasl_bind_s(
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return( rc ); |
return( rc ); |
} |
} |
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if ( ldap_result( ld, msgid, 1, NULL, &result ) == -1 ) { |
#ifdef LDAP_CONNECTIONLESS |
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if (LDAP_IS_UDP(ld)) { |
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return( rc ); |
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} |
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#endif |
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if ( ldap_result( ld, msgid, LDAP_MSG_ALL, NULL, &result ) == -1 || !result ) { |
return( ld->ld_errno ); /* ldap_result sets ld_errno */ |
return( ld->ld_errno ); /* ldap_result sets ld_errno */ |
} |
} |
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Line 191 ldap_sasl_bind_s(
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Line 201 ldap_sasl_bind_s(
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rc = ldap_parse_sasl_bind_result( ld, result, &scredp, 0 ); |
rc = ldap_parse_sasl_bind_result( ld, result, &scredp, 0 ); |
} |
} |
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if ( rc != LDAP_SUCCESS && rc != LDAP_SASL_BIND_IN_PROGRESS ) { |
if ( rc != LDAP_SUCCESS ) { |
ldap_msgfree( result ); |
ldap_msgfree( result ); |
return( rc ); |
return( rc ); |
} |
} |
Line 246 ldap_parse_sasl_bind_result(
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Line 256 ldap_parse_sasl_bind_result(
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assert( LDAP_VALID( ld ) ); |
assert( LDAP_VALID( ld ) ); |
assert( res != NULL ); |
assert( res != NULL ); |
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if ( ld == NULL || res == NULL ) { |
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return LDAP_PARAM_ERROR; |
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} |
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if( servercredp != NULL ) { |
if( servercredp != NULL ) { |
if( ld->ld_version < LDAP_VERSION2 ) { |
if( ld->ld_version < LDAP_VERSION2 ) { |
return LDAP_NOT_SUPPORTED; |
return LDAP_NOT_SUPPORTED; |
Line 283 ldap_parse_sasl_bind_result(
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Line 289 ldap_parse_sasl_bind_result(
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} |
} |
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if ( ld->ld_version < LDAP_VERSION2 ) { |
if ( ld->ld_version < LDAP_VERSION2 ) { |
tag = ber_scanf( ber, "{ia}", |
tag = ber_scanf( ber, "{iA}", |
&errcode, &ld->ld_error ); |
&errcode, &ld->ld_error ); |
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if( tag == LBER_ERROR ) { |
if( tag == LBER_ERROR ) { |
Line 295 ldap_parse_sasl_bind_result(
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Line 301 ldap_parse_sasl_bind_result(
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} else { |
} else { |
ber_len_t len; |
ber_len_t len; |
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tag = ber_scanf( ber, "{iaa" /*}*/, |
tag = ber_scanf( ber, "{eAA" /*}*/, |
&errcode, &ld->ld_matched, &ld->ld_error ); |
&errcode, &ld->ld_matched, &ld->ld_error ); |
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if( tag == LBER_ERROR ) { |
if( tag == LBER_ERROR ) { |
Line 341 ldap_parse_sasl_bind_result(
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Line 347 ldap_parse_sasl_bind_result(
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ldap_msgfree( res ); |
ldap_msgfree( res ); |
} |
} |
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return( ld->ld_errno ); |
return( LDAP_SUCCESS ); |
} |
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#ifdef HAVE_CYRUS_SASL |
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/* |
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* Various Cyrus SASL related stuff. |
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*/ |
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static int sasl_setup( Sockbuf *sb, void *arg ); |
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static int sasl_remove( Sockbuf *sb ); |
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static ber_slen_t sasl_read( Sockbuf *sb, void *buf, ber_len_t len ); |
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static ber_slen_t sasl_write( Sockbuf *sb, void *buf, ber_len_t len ); |
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static int sasl_close( Sockbuf *sb ); |
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static Sockbuf_IO sasl_io= |
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{ |
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sasl_setup, |
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sasl_remove, |
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sasl_read, |
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sasl_write, |
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sasl_close |
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}; |
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#define HAS_SASL( sb ) ((sb)->sb_io==&sasl_io) |
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static char * |
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array2str( char **a ) |
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{ |
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char *s, **v, *p; |
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int len = 0; |
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for ( v = a; *v != NULL; v++ ) { |
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len += strlen( *v ) + 1; /* for a space */ |
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} |
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if ( len == 0 ) { |
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return NULL; |
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} |
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s = LDAP_MALLOC ( len ); /* last space holds \0 */ |
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if ( s == NULL ) { |
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return NULL; |
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} |
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p = s; |
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for ( v = a; *v != NULL; v++ ) { |
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int len; |
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if ( v != a ) { |
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strncpy( p, " ", 1 ); |
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++p; |
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} |
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len = strlen( *v ); |
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strncpy( p, *v, len ); |
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p += len; |
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} |
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*p = '\0'; |
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return s; |
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} |
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int ldap_pvt_sasl_init( void ) |
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{ |
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/* XXX not threadsafe */ |
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static int sasl_initialized = 0; |
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if ( sasl_initialized ) { |
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return 0; |
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} |
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#ifndef CSRIMALLOC |
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sasl_set_alloc( ber_memalloc, ber_memcalloc, ber_memrealloc, ber_memfree ); |
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#endif /* CSRIMALLOC */ |
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if ( sasl_client_init( NULL ) == SASL_OK ) { |
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sasl_initialized = 1; |
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return 0; |
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} |
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return -1; |
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} |
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int ldap_pvt_sasl_install( Sockbuf *sb, void *ctx_arg ) |
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{ |
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/* don't install the stuff unless security has been negotiated */ |
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if ( !HAS_SASL( sb ) ) { |
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ber_pvt_sb_clear_io( sb ); |
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ber_pvt_sb_set_io( sb, &sasl_io, ctx_arg ); |
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} |
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return 0; |
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} |
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static int sasl_setup( Sockbuf *sb, void *arg ) |
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{ |
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sb->sb_iodata = arg; |
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return 0; |
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} |
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static int sasl_remove( Sockbuf *sb ) |
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{ |
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return 0; |
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} |
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static ber_slen_t sasl_read( Sockbuf *sb, void *buf, ber_len_t buflen ) |
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{ |
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char *recv_tok; |
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unsigned recv_tok_len; |
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sasl_conn_t *conn = (sasl_conn_t *)sb->sb_iodata; |
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if ((ber_pvt_sb_io_tcp.sbi_read)( sb, buf, buflen ) != buflen ) { |
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return -1; |
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} |
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if ( sasl_decode( conn, buf, buflen, &recv_tok, &recv_tok_len ) != SASL_OK ) { |
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return -1; |
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} |
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if ( recv_tok_len > buflen ) { |
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LDAP_FREE( recv_tok ); |
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return -1; |
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} |
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memcpy( buf, recv_tok, recv_tok_len ); |
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LDAP_FREE( recv_tok ); |
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return recv_tok_len; |
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} |
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static ber_slen_t sasl_write( Sockbuf *sb, void *buf, ber_len_t len ) |
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{ |
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char *wrapped_tok; |
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unsigned wrapped_tok_len; |
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sasl_conn_t *conn = (sasl_conn_t *)sb->sb_iodata; |
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if ( sasl_encode( conn, (const char *)buf, len, |
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&wrapped_tok, &wrapped_tok_len ) != SASL_OK ) { |
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return -1; |
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} |
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if ((ber_pvt_sb_io_tcp.sbi_write)( sb, wrapped_tok, wrapped_tok_len ) != wrapped_tok_len ) { |
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LDAP_FREE( wrapped_tok ); |
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return -1; |
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} |
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LDAP_FREE( wrapped_tok ); |
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return len; |
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} |
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static int sasl_close( Sockbuf *sb ) |
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{ |
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(ber_pvt_sb_io_tcp.sbi_close)( sb ); |
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} |
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static int |
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sasl_err2ldap( int saslerr ) |
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{ |
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int rc; |
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switch (saslerr) { |
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case SASL_CONTINUE: |
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rc = LDAP_MORE_RESULTS_TO_RETURN; |
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break; |
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case SASL_OK: |
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rc = LDAP_SUCCESS; |
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break; |
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case SASL_FAIL: |
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rc = LDAP_LOCAL_ERROR; |
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break; |
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case SASL_NOMEM: |
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rc = LDAP_NO_MEMORY; |
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break; |
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case SASL_NOMECH: |
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rc = LDAP_AUTH_UNKNOWN; |
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break; |
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case SASL_BADAUTH: |
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rc = LDAP_AUTH_UNKNOWN; |
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break; |
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case SASL_NOAUTHZ: |
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rc = LDAP_PARAM_ERROR; |
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break; |
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case SASL_TOOWEAK: |
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case SASL_ENCRYPT: |
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rc = LDAP_AUTH_UNKNOWN; |
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break; |
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default: |
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rc = LDAP_LOCAL_ERROR; |
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break; |
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} |
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assert( rc == LDAP_SUCCESS || LDAP_API_ERROR( rc ) ); |
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return rc; |
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} |
} |
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int |
int |
Line 545 ldap_pvt_sasl_getmechs ( LDAP *ld, char
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Line 356 ldap_pvt_sasl_getmechs ( LDAP *ld, char
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/* we need to query the server for supported mechs anyway */ |
/* we need to query the server for supported mechs anyway */ |
LDAPMessage *res, *e; |
LDAPMessage *res, *e; |
char *attrs[] = { "supportedSASLMechanisms", NULL }; |
char *attrs[] = { "supportedSASLMechanisms", NULL }; |
char **values, *mechlist, **p; |
char **values, *mechlist; |
int rc; |
int rc; |
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Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_getmech\n", 0, 0, 0 ); |
Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_getmech\n", 0, 0, 0 ); |
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rc = ldap_search_s( ld, NULL, LDAP_SCOPE_BASE, |
rc = ldap_search_s( ld, "", LDAP_SCOPE_BASE, |
NULL, attrs, 0, &res ); |
NULL, attrs, 0, &res ); |
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if ( rc != LDAP_SUCCESS ) { |
if ( rc != LDAP_SUCCESS ) { |
Line 559 ldap_pvt_sasl_getmechs ( LDAP *ld, char
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Line 370 ldap_pvt_sasl_getmechs ( LDAP *ld, char
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e = ldap_first_entry( ld, res ); |
e = ldap_first_entry( ld, res ); |
if ( e == NULL ) { |
if ( e == NULL ) { |
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ldap_msgfree( res ); |
if ( ld->ld_errno == LDAP_SUCCESS ) { |
if ( ld->ld_errno == LDAP_SUCCESS ) { |
ld->ld_errno = LDAP_UNAVAILABLE; |
ld->ld_errno = LDAP_NO_SUCH_OBJECT; |
} |
} |
return ld->ld_errno; |
return ld->ld_errno; |
} |
} |
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values = ldap_get_values( ld, e, "supportedSASLMechanisms" ); |
values = ldap_get_values( ld, e, "supportedSASLMechanisms" ); |
if ( values == NULL ) { |
if ( values == NULL ) { |
ld->ld_errno = LDAP_NO_SUCH_ATTRIBUTE; |
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ldap_msgfree( res ); |
ldap_msgfree( res ); |
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ld->ld_errno = LDAP_NO_SUCH_ATTRIBUTE; |
return ld->ld_errno; |
return ld->ld_errno; |
} |
} |
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mechlist = array2str( values ); |
mechlist = ldap_charray2str( values, " " ); |
if ( mechlist == NULL ) { |
if ( mechlist == NULL ) { |
ld->ld_errno = LDAP_NO_MEMORY; |
LDAP_VFREE( values ); |
ldap_value_free( values ); |
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ldap_msgfree( res ); |
ldap_msgfree( res ); |
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ld->ld_errno = LDAP_NO_MEMORY; |
return ld->ld_errno; |
return ld->ld_errno; |
} |
} |
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ldap_value_free( values ); |
LDAP_VFREE( values ); |
ldap_msgfree( res ); |
ldap_msgfree( res ); |
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*pmechlist = mechlist; |
*pmechlist = mechlist; |
Line 588 ldap_pvt_sasl_getmechs ( LDAP *ld, char
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Line 400 ldap_pvt_sasl_getmechs ( LDAP *ld, char
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return LDAP_SUCCESS; |
return LDAP_SUCCESS; |
} |
} |
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/* |
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* ldap_sasl_interactive_bind_s - interactive SASL authentication |
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* |
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* This routine uses interactive callbacks. |
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* |
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* LDAP_SUCCESS is returned upon success, the ldap error code |
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* otherwise. |
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*/ |
int |
int |
ldap_pvt_sasl_bind( |
ldap_sasl_interactive_bind_s( |
LDAP *ld, |
LDAP *ld, |
LDAP_CONST char *dn, |
LDAP_CONST char *dn, /* usually NULL */ |
LDAP_CONST char *mechs, |
LDAP_CONST char *mechs, |
LDAP_CONST sasl_callback_t *callbacks, |
LDAPControl **serverControls, |
LDAPControl **sctrls, |
LDAPControl **clientControls, |
LDAPControl **cctrls ) |
unsigned flags, |
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LDAP_SASL_INTERACT_PROC *interact, |
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void *defaults ) |
{ |
{ |
const char *mech; |
int rc; |
int saslrc, rc, msgid, ssf = 0; |
char *smechs = NULL; |
struct berval ccred, *scred; |
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char *host; |
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sasl_interact_t *client_interact = NULL; |
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|
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Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_bind\n", 0, 0, 0 ); |
#if defined( LDAP_R_COMPILE ) && defined( HAVE_CYRUS_SASL ) |
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ldap_pvt_thread_mutex_lock( &ldap_int_sasl_mutex ); |
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#endif |
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#ifdef LDAP_CONNECTIONLESS |
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if( LDAP_IS_UDP(ld) ) { |
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/* Just force it to simple bind, silly to make the user |
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* ask all the time. No, we don't ever actually bind, but I'll |
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* let the final bind handler take care of saving the cdn. |
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*/ |
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rc = ldap_simple_bind( ld, dn, NULL ); |
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rc = rc < 0 ? rc : 0; |
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goto done; |
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} else |
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#endif |
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/* do a quick !LDAPv3 check... ldap_sasl_bind will do the rest. */ |
#ifdef HAVE_CYRUS_SASL |
if (ld->ld_version < LDAP_VERSION3) { |
if( mechs == NULL || *mechs == '\0' ) { |
ld->ld_errno = LDAP_NOT_SUPPORTED; |
mechs = ld->ld_options.ldo_def_sasl_mech; |
return ld->ld_errno; |
|
} |
} |
|
#endif |
|
|
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if( mechs == NULL || *mechs == '\0' ) { |
|
rc = ldap_pvt_sasl_getmechs( ld, &smechs ); |
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if( rc != LDAP_SUCCESS ) { |
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goto done; |
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} |
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if( ! ber_pvt_sb_in_use( &ld->ld_sb ) ) { |
Debug( LDAP_DEBUG_TRACE, |
/* not connected yet */ |
"ldap_sasl_interactive_bind_s: server supports: %s\n", |
int rc = ldap_open_defconn( ld ); |
smechs, 0, 0 ); |
|
|
if( rc < 0 ) return ld->ld_errno; |
|
} |
|
|
|
/* XXX this doesn't work with PF_LOCAL hosts */ |
mechs = smechs; |
host = ldap_host_connected_to( &ld->ld_sb ); |
|
|
|
if ( host == NULL ) { |
} else { |
ld->ld_errno = LDAP_UNAVAILABLE; |
Debug( LDAP_DEBUG_TRACE, |
return ld->ld_errno; |
"ldap_sasl_interactive_bind_s: user selected: %s\n", |
|
mechs, 0, 0 ); |
} |
} |
|
|
if ( ld->ld_sasl_context != NULL ) { |
rc = ldap_int_sasl_bind( ld, dn, mechs, |
sasl_dispose( &ld->ld_sasl_context ); |
serverControls, clientControls, |
} |
flags, interact, defaults ); |
|
|
|
done: |
|
#if defined( LDAP_R_COMPILE ) && defined( HAVE_CYRUS_SASL ) |
|
ldap_pvt_thread_mutex_unlock( &ldap_int_sasl_mutex ); |
|
#endif |
|
if ( smechs ) LDAP_FREE( smechs ); |
|
|
|
return rc; |
|
} |
|
|
saslrc = sasl_client_new( "ldap", host, callbacks, 0, &ld->ld_sasl_context ); |
#ifdef HAVE_CYRUS_SASL |
|
|
LDAP_FREE( host ); |
#ifdef HAVE_SASL_SASL_H |
|
#include <sasl/sasl.h> |
|
#else |
|
#include <sasl.h> |
|
#endif |
|
|
if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) { |
#endif /* HAVE_CYRUS_SASL */ |
ld->ld_errno = sasl_err2ldap( rc ); |
|
sasl_dispose( &ld->ld_sasl_context ); |
|
return ld->ld_errno; |
|
} |
|
|
|
ccred.bv_val = NULL; |
static int |
ccred.bv_len = 0; |
sb_sasl_generic_remove( Sockbuf_IO_Desc *sbiod ); |
|
|
saslrc = sasl_client_start( ld->ld_sasl_context, |
static int |
mechs, |
sb_sasl_generic_setup( Sockbuf_IO_Desc *sbiod, void *arg ) |
NULL, |
{ |
&client_interact, |
struct sb_sasl_generic_data *p; |
&ccred.bv_val, |
struct sb_sasl_generic_install *i; |
(unsigned int *)&ccred.bv_len, |
|
&mech ); |
|
|
|
if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) { |
assert( sbiod != NULL ); |
ld->ld_errno = sasl_err2ldap( saslrc ); |
|
sasl_dispose( &ld->ld_sasl_context ); |
i = (struct sb_sasl_generic_install *)arg; |
return ld->ld_errno; |
|
|
p = LBER_MALLOC( sizeof( *p ) ); |
|
if ( p == NULL ) |
|
return -1; |
|
p->ops = i->ops; |
|
p->ops_private = i->ops_private; |
|
p->sbiod = sbiod; |
|
p->flags = 0; |
|
ber_pvt_sb_buf_init( &p->sec_buf_in ); |
|
ber_pvt_sb_buf_init( &p->buf_in ); |
|
ber_pvt_sb_buf_init( &p->buf_out ); |
|
|
|
sbiod->sbiod_pvt = p; |
|
|
|
p->ops->init( p, &p->min_send, &p->max_send, &p->max_recv ); |
|
|
|
if ( ber_pvt_sb_grow_buffer( &p->sec_buf_in, p->min_send ) < 0 ) { |
|
sb_sasl_generic_remove( sbiod ); |
|
sock_errset(ENOMEM); |
|
return -1; |
} |
} |
|
|
scred = NULL; |
return 0; |
|
} |
|
|
do { |
static int |
sasl_interact_t *client_interact = NULL; |
sb_sasl_generic_remove( Sockbuf_IO_Desc *sbiod ) |
|
{ |
|
struct sb_sasl_generic_data *p; |
|
|
rc = ldap_sasl_bind_s( ld, dn, mech, &ccred, sctrls, cctrls, &scred ); |
assert( sbiod != NULL ); |
if ( rc == LDAP_SUCCESS ) { |
|
break; |
|
} else if ( rc != LDAP_SASL_BIND_IN_PROGRESS ) { |
|
if ( ccred.bv_val != NULL ) { |
|
LDAP_FREE( ccred.bv_val ); |
|
} |
|
sasl_dispose( &ld->ld_sasl_context ); |
|
return ld->ld_errno; |
|
} |
|
|
|
if ( ccred.bv_val != NULL ) { |
p = (struct sb_sasl_generic_data *)sbiod->sbiod_pvt; |
LDAP_FREE( ccred.bv_val ); |
|
ccred.bv_val = NULL; |
|
} |
|
|
|
saslrc = sasl_client_step( ld->ld_sasl_context, |
p->ops->fini(p); |
(scred == NULL) ? NULL : scred->bv_val, |
|
(scred == NULL) ? 0 : scred->bv_len, |
|
&client_interact, |
|
&ccred.bv_val, |
|
(unsigned int *)&ccred.bv_len ); |
|
|
|
ber_bvfree( scred ); |
ber_pvt_sb_buf_destroy( &p->sec_buf_in ); |
|
ber_pvt_sb_buf_destroy( &p->buf_in ); |
|
ber_pvt_sb_buf_destroy( &p->buf_out ); |
|
LBER_FREE( p ); |
|
sbiod->sbiod_pvt = NULL; |
|
return 0; |
|
} |
|
|
if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) { |
static ber_len_t |
ld->ld_errno = sasl_err2ldap( saslrc ); |
sb_sasl_generic_pkt_length( |
sasl_dispose( &ld->ld_sasl_context ); |
struct sb_sasl_generic_data *p, |
return ld->ld_errno; |
const unsigned char *buf, |
} |
int debuglevel ) |
} while ( rc == LDAP_SASL_BIND_IN_PROGRESS ); |
{ |
|
ber_len_t size; |
|
|
assert ( rc == LDAP_SUCCESS ); |
assert( buf != NULL ); |
|
|
if ( sasl_getprop( ld->ld_sasl_context, SASL_SSF, (void **)&ssf ) |
size = buf[0] << 24 |
== SASL_OK && ssf ) { |
| buf[1] << 16 |
ldap_pvt_sasl_install( &ld->ld_sb, ld->ld_sasl_context ); |
| buf[2] << 8 |
|
| buf[3]; |
|
|
|
if ( size > p->max_recv ) { |
|
/* somebody is trying to mess me up. */ |
|
ber_log_printf( LDAP_DEBUG_ANY, debuglevel, |
|
"sb_sasl_generic_pkt_length: " |
|
"received illegal packet length of %lu bytes\n", |
|
(unsigned long)size ); |
|
size = 16; /* this should lead to an error. */ |
} |
} |
|
|
return rc; |
return size + 4; /* include the size !!! */ |
} |
} |
|
|
/* based on sample/sample-client.c */ |
/* Drop a processed packet from the input buffer */ |
static int |
static void |
ldap_pvt_sasl_getsecret(sasl_conn_t *conn, |
sb_sasl_generic_drop_packet ( |
void *context, int id, sasl_secret_t **psecret) |
struct sb_sasl_generic_data *p, |
|
int debuglevel ) |
{ |
{ |
struct berval *passphrase = (struct berval *)context; |
ber_slen_t len; |
size_t len; |
|
|
len = p->sec_buf_in.buf_ptr - p->sec_buf_in.buf_end; |
|
if ( len > 0 ) |
|
AC_MEMCPY( p->sec_buf_in.buf_base, p->sec_buf_in.buf_base + |
|
p->sec_buf_in.buf_end, len ); |
|
|
if ( conn == NULL || psecret == NULL || id != SASL_CB_PASS ) { |
if ( len >= 4 ) { |
return SASL_BADPARAM; |
p->sec_buf_in.buf_end = sb_sasl_generic_pkt_length(p, |
|
(unsigned char *) p->sec_buf_in.buf_base, debuglevel); |
} |
} |
|
else { |
|
p->sec_buf_in.buf_end = 0; |
|
} |
|
p->sec_buf_in.buf_ptr = len; |
|
} |
|
|
|
static ber_slen_t |
|
sb_sasl_generic_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len) |
|
{ |
|
struct sb_sasl_generic_data *p; |
|
ber_slen_t ret, bufptr; |
|
|
len = (passphrase != NULL) ? (size_t)passphrase->bv_len: 0; |
assert( sbiod != NULL ); |
|
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) ); |
|
|
*psecret = (sasl_secret_t *) LDAP_MALLOC( sizeof( sasl_secret_t ) + len ); |
p = (struct sb_sasl_generic_data *)sbiod->sbiod_pvt; |
if ( *psecret == NULL ) { |
|
return SASL_NOMEM; |
/* Are there anything left in the buffer? */ |
|
ret = ber_pvt_sb_copy_out( &p->buf_in, buf, len ); |
|
bufptr = ret; |
|
len -= ret; |
|
|
|
if ( len == 0 ) |
|
return bufptr; |
|
|
|
p->ops->reset_buf( p, &p->buf_in ); |
|
|
|
/* Read the length of the packet */ |
|
while ( p->sec_buf_in.buf_ptr < 4 ) { |
|
ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base + |
|
p->sec_buf_in.buf_ptr, |
|
4 - p->sec_buf_in.buf_ptr ); |
|
#ifdef EINTR |
|
if ( ( ret < 0 ) && ( errno == EINTR ) ) |
|
continue; |
|
#endif |
|
if ( ret <= 0 ) |
|
return bufptr ? bufptr : ret; |
|
|
|
p->sec_buf_in.buf_ptr += ret; |
} |
} |
|
|
(*psecret)->len = passphrase->bv_len; |
/* The new packet always starts at p->sec_buf_in.buf_base */ |
|
ret = sb_sasl_generic_pkt_length(p, (unsigned char *) p->sec_buf_in.buf_base, |
|
sbiod->sbiod_sb->sb_debug ); |
|
|
if ( passphrase != NULL ) { |
/* Grow the packet buffer if neccessary */ |
memcpy((*psecret)->data, passphrase->bv_val, len); |
if ( ( p->sec_buf_in.buf_size < (ber_len_t) ret ) && |
|
ber_pvt_sb_grow_buffer( &p->sec_buf_in, ret ) < 0 ) |
|
{ |
|
sock_errset(ENOMEM); |
|
return -1; |
} |
} |
|
p->sec_buf_in.buf_end = ret; |
|
|
return SASL_OK; |
/* Did we read the whole encrypted packet? */ |
} |
while ( p->sec_buf_in.buf_ptr < p->sec_buf_in.buf_end ) { |
|
/* No, we have got only a part of it */ |
|
ret = p->sec_buf_in.buf_end - p->sec_buf_in.buf_ptr; |
|
|
|
ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base + |
|
p->sec_buf_in.buf_ptr, ret ); |
|
#ifdef EINTR |
|
if ( ( ret < 0 ) && ( errno == EINTR ) ) |
|
continue; |
|
#endif |
|
if ( ret <= 0 ) |
|
return bufptr ? bufptr : ret; |
|
|
static int |
p->sec_buf_in.buf_ptr += ret; |
ldap_pvt_sasl_getsimple(void *context, int id, const char **result, int *len) |
} |
{ |
|
const char *value = (const char *)context; |
|
|
|
if ( result == NULL ) { |
/* Decode the packet */ |
return SASL_BADPARAM; |
ret = p->ops->decode( p, &p->sec_buf_in, &p->buf_in ); |
} |
|
|
|
switch ( id ) { |
/* Drop the packet from the input buffer */ |
case SASL_CB_USER: |
sb_sasl_generic_drop_packet( p, sbiod->sbiod_sb->sb_debug ); |
case SASL_CB_AUTHNAME: |
|
*result = value; |
if ( ret != 0 ) { |
if ( len ) |
ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug, |
*len = value ? strlen( value ) : 0; |
"sb_sasl_generic_read: failed to decode packet\n" ); |
break; |
sock_errset(EIO); |
case SASL_CB_LANGUAGE: |
return -1; |
*result = NULL; |
|
if ( len ) |
|
*len = 0; |
|
break; |
|
default: |
|
return SASL_BADPARAM; |
|
} |
} |
|
|
return SASL_OK; |
bufptr += ber_pvt_sb_copy_out( &p->buf_in, (char*) buf + bufptr, len ); |
|
|
|
return bufptr; |
} |
} |
|
|
int |
static ber_slen_t |
ldap_pvt_sasl_get_option( LDAP *ld, int option, void *arg ) |
sb_sasl_generic_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len) |
{ |
{ |
sasl_ssf_t *ssf; |
struct sb_sasl_generic_data *p; |
|
int ret; |
if ( ld == NULL ) |
ber_len_t len2; |
return -1; |
|
|
|
switch ( option ) { |
assert( sbiod != NULL ); |
case LDAP_OPT_X_SASL_MINSSF: |
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) ); |
*(int *)arg = ld->ld_options.ldo_sasl_minssf; |
|
break; |
p = (struct sb_sasl_generic_data *)sbiod->sbiod_pvt; |
case LDAP_OPT_X_SASL_MAXSSF: |
|
*(int *)arg = ld->ld_options.ldo_sasl_maxssf; |
/* Is there anything left in the buffer? */ |
break; |
if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) { |
case LDAP_OPT_X_SASL_ACTSSF: |
ret = ber_pvt_sb_do_write( sbiod, &p->buf_out ); |
if ( ld->ld_sasl_context == NULL ) { |
if ( ret < 0 ) return ret; |
*(int *)arg = -1; |
|
break; |
/* Still have something left?? */ |
} |
if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) { |
if ( sasl_getprop( ld->ld_sasl_context, SASL_SSF, |
sock_errset(EAGAIN); |
(void **) &ssf ) != SASL_OK ) |
|
{ |
|
return -1; |
|
} |
|
*(int *)arg = *ssf; |
|
break; |
|
default: |
|
return -1; |
return -1; |
|
} |
} |
} |
return 0; |
|
} |
|
|
|
int |
len2 = p->max_send - 100; /* For safety margin */ |
ldap_pvt_sasl_set_option( LDAP *ld, int option, void *arg ) |
len2 = len > len2 ? len2 : len; |
{ |
|
if ( ld == NULL ) |
|
return -1; |
|
|
|
switch ( option ) { |
/* If we're just retrying a partial write, tell the |
case LDAP_OPT_X_SASL_MINSSF: |
* caller it's done. Let them call again if there's |
ld->ld_options.ldo_sasl_minssf = *(int *)arg; |
* still more left to write. |
break; |
*/ |
case LDAP_OPT_X_SASL_MAXSSF: |
if ( p->flags & LDAP_PVT_SASL_PARTIAL_WRITE ) { |
ld->ld_options.ldo_sasl_maxssf = *(int *)arg; |
p->flags ^= LDAP_PVT_SASL_PARTIAL_WRITE; |
break; |
return len2; |
case LDAP_OPT_X_SASL_ACTSSF: |
} |
/* This option is read-only */ |
|
default: |
/* now encode the next packet. */ |
return -1; |
p->ops->reset_buf( p, &p->buf_out ); |
|
|
|
ret = p->ops->encode( p, buf, len2, &p->buf_out ); |
|
|
|
if ( ret != 0 ) { |
|
ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug, |
|
"sb_sasl_generic_write: failed to encode packet\n" ); |
|
sock_errset(EIO); |
|
return -1; |
} |
} |
return 0; |
|
} |
|
|
|
/* |
ret = ber_pvt_sb_do_write( sbiod, &p->buf_out ); |
* ldap_negotiated_sasl_bind_s - bind to the ldap server (and X.500) |
|
* using SASL authentication. |
|
* |
|
* This routine attempts to authenticate the user referred by the |
|
* authentication id using the provided password. An optional |
|
* authorization identity may be provided. An DN is generally not |
|
* provided [see AuthMethod]. |
|
* |
|
* If the mechanism negotiated does not require a password, the |
|
* passwd field is ignored. [A callback mechanism should really |
|
* be used]. |
|
* |
|
* LDAP_SUCCESS is returned upon success, the ldap error code |
|
* otherwise. |
|
* |
|
* Examples: |
|
* ldap_negotiated_sasl_bind_s( ld, NULL, |
|
* NULL, NULL, NULL, |
|
* NULL, NULL, NULL, NULL ); |
|
* |
|
* ldap_negotiated_sasl_bind_s( ld, NULL, |
|
* "user@OPENLDAP.ORG", NULL, NULL, |
|
* "GSSAPI", NULL, NULL, NULL ); |
|
* |
|
* ldap_negotiated_sasl_bind_s( ld, NULL, |
|
* "manager", "dn:cn=user,dc=openldap,dc=org", NULL, |
|
* "DIGEST-MD5", NULL, NULL, NULL ); |
|
* |
|
* ldap_negotiated_sasl_bind_s( ld, NULL, |
|
* "root@OPENLDAP.ORG", "u:user@OPENLDAP.ORG", NULL, |
|
* "GSSAPI", NULL, NULL, NULL ); |
|
* |
|
* ldap_negotiated_sasl_bind_s( ld, NULL, |
|
* "manager", "dn:cn=user,dc=openldap,dc=org", NULL, |
|
* "DIGEST-MD5", NULL, NULL, NULL ); |
|
*/ |
|
int |
|
ldap_negotiated_sasl_bind_s( |
|
LDAP *ld, |
|
LDAP_CONST char *dn, /* usually NULL */ |
|
LDAP_CONST char *authenticationId, |
|
LDAP_CONST char *authorizationId, /* commonly NULL */ |
|
LDAP_CONST char *saslMechanism, |
|
struct berval *passPhrase, |
|
LDAPControl **serverControls, |
|
LDAPControl **clientControls) |
|
{ |
|
int n; |
|
sasl_callback_t callbacks[4]; |
|
int rc; |
|
|
|
Debug( LDAP_DEBUG_TRACE, "ldap_negotiated_sasl_bind_s\n", 0, 0, 0 ); |
if ( ret < 0 ) { |
|
/* error? */ |
|
int err = sock_errno(); |
|
/* caller can retry this */ |
|
if ( err == EAGAIN || err == EWOULDBLOCK || err == EINTR ) |
|
p->flags |= LDAP_PVT_SASL_PARTIAL_WRITE; |
|
return ret; |
|
} else if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) { |
|
/* partial write? pretend nothing got written */ |
|
len2 = 0; |
|
p->flags |= LDAP_PVT_SASL_PARTIAL_WRITE; |
|
} |
|
|
|
/* return number of bytes encoded, not written, to ensure |
|
* no byte is encoded twice (even if only sent once). |
|
*/ |
|
return len2; |
|
} |
|
|
if( saslMechanism == NULL || *saslMechanism == '\0' ) { |
static int |
char *mechs; |
sb_sasl_generic_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg ) |
rc = ldap_pvt_sasl_getmechs( ld, &mechs ); |
{ |
|
struct sb_sasl_generic_data *p; |
|
|
if( rc != LDAP_SUCCESS ) { |
p = (struct sb_sasl_generic_data *)sbiod->sbiod_pvt; |
return rc; |
|
} |
|
|
|
saslMechanism = mechs; |
if ( opt == LBER_SB_OPT_DATA_READY ) { |
|
if ( p->buf_in.buf_ptr != p->buf_in.buf_end ) return 1; |
} |
} |
|
|
/* SASL Authentication Identity */ |
return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg ); |
callbacks[n=0].id = SASL_CB_AUTHNAME; |
} |
callbacks[n].proc = ldap_pvt_sasl_getsimple; |
|
callbacks[n].context = (void *)authenticationId; |
|
|
|
/* SASL Authorization Identity (userid) */ |
Sockbuf_IO ldap_pvt_sockbuf_io_sasl_generic = { |
if( authorizationId != NULL ) { |
sb_sasl_generic_setup, /* sbi_setup */ |
callbacks[++n].id = SASL_CB_USER; |
sb_sasl_generic_remove, /* sbi_remove */ |
callbacks[n].proc = ldap_pvt_sasl_getsimple; |
sb_sasl_generic_ctrl, /* sbi_ctrl */ |
callbacks[n].context = (void *)authorizationId; |
sb_sasl_generic_read, /* sbi_read */ |
} |
sb_sasl_generic_write, /* sbi_write */ |
|
NULL /* sbi_close */ |
|
}; |
|
|
callbacks[++n].id = SASL_CB_PASS; |
int ldap_pvt_sasl_generic_install( |
callbacks[n].proc = ldap_pvt_sasl_getsecret; |
Sockbuf *sb, |
callbacks[n].context = (void *)passPhrase; |
struct sb_sasl_generic_install *install_arg ) |
|
{ |
|
Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_generic_install\n", |
|
0, 0, 0 ); |
|
|
callbacks[++n].id = SASL_CB_LIST_END; |
/* don't install the stuff unless security has been negotiated */ |
callbacks[n].proc = NULL; |
|
callbacks[n].context = NULL; |
if ( !ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, |
|
&ldap_pvt_sockbuf_io_sasl_generic ) ) |
|
{ |
|
#ifdef LDAP_DEBUG |
|
ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug, |
|
LBER_SBIOD_LEVEL_APPLICATION, (void *)"sasl_generic_" ); |
|
#endif |
|
ber_sockbuf_add_io( sb, &ldap_pvt_sockbuf_io_sasl_generic, |
|
LBER_SBIOD_LEVEL_APPLICATION, install_arg ); |
|
} |
|
|
rc = ldap_pvt_sasl_bind(ld, dn, saslMechanism, callbacks, |
return LDAP_SUCCESS; |
serverControls, clientControls); |
} |
|
|
return rc; |
void ldap_pvt_sasl_generic_remove( Sockbuf *sb ) |
|
{ |
|
ber_sockbuf_remove_io( sb, &ldap_pvt_sockbuf_io_sasl_generic, |
|
LBER_SBIOD_LEVEL_APPLICATION ); |
|
#ifdef LDAP_DEBUG |
|
ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug, |
|
LBER_SBIOD_LEVEL_APPLICATION ); |
|
#endif |
} |
} |
#endif /* HAVE_CYRUS_SASL */ |
|