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/*
* Copyright (C) 2002 Timo Schulz
* Portions Copyright (C) 2003 Nikos Mavroyanopoulos
*
* This file is part of GNUTLS-EXTRA.
*
* The GNUTLS library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* Functions on OpenPGP key parsing
*/
#include <gnutls_int.h>
#include <gnutls_errors.h>
#include <gnutls_openpgp.h>
#include <openpgp.h>
#ifdef HAVE_LIBOPENCDK
static int
openpgp_get_key_trust( gnutls_openpgp_trustdb trustdb,
gnutls_openpgp_key key, unsigned int *r_trustval )
{
CDK_PACKET *pkt;
cdk_pkt_pubkey_t pk = NULL;
int flags = 0, ot = 0;
int rc = 0;
if( !trustdb || !key || !r_trustval ) {
gnutls_assert( );
return GNUTLS_E_INVALID_REQUEST;
}
*r_trustval = 0;
pkt = cdk_kbnode_find_packet( key->knode, CDK_PKT_PUBLIC_KEY );
if( !pkt ) {
rc = GNUTLS_E_NO_CERTIFICATE_FOUND;
goto leave;
}
pk = pkt->pkt.public_key;
rc = cdk_trustdb_get_ownertrust( trustdb->st, pk, &ot, &flags );
if ( rc ) { /* no ownertrust record was found */
rc = 0;
goto leave;
}
if( flags & CDK_TFLAG_DISABLED ) {
*r_trustval |= GNUTLS_CERT_INVALID;
goto leave;
}
if( flags & CDK_TFLAG_REVOKED ) {
*r_trustval |= GNUTLS_CERT_REVOKED;
}
rc = 0;
leave:
return rc;
}
/**
* gnutls_openpgp_key_verify_ring - Verify all signatures on the key
* @key: the structure that holds the key.
* @keyring: holds the keyring to check against
* @flags: unused (should be 0)
* @verify: will hold the certificate verification output.
*
* Verify all signatures in the key, using the given set of keys (keyring).
* If a signer key is not available, the signature is skipped.
*
* The certificate verification output will be put in 'verify' and will be
* one or more of the gnutls_certificate_status enumerated elements bitwise or'd.
*
* GNUTLS_CERT_INVALID\: A signature on the key is invalid.
*
* GNUTLS_CERT_REVOKED\: The key has been revoked.
*
* NOTE: this function does not verify using any "web of trust". You
* may use GnuPG for that purpose, or any other external PGP application.
*
* Returns 0 on success.
**/
int gnutls_openpgp_key_verify_ring( gnutls_openpgp_key key,
gnutls_openpgp_keyring keyring,
unsigned int flags, unsigned int *verify)
{
int rc = 0;
unsigned int status = 0;
if( !key || !keyring ) {
gnutls_assert();
return GNUTLS_E_NO_CERTIFICATE_FOUND;
}
*verify = 0;
rc = cdk_pk_check_sigs( key->knode, keyring->hd, &status );
if( rc == CDK_Error_No_Key ) {
rc = GNUTLS_E_NO_CERTIFICATE_FOUND;
gnutls_assert();
return rc;
}
if( rc) {
rc = _gnutls_map_cdk_rc(rc);
gnutls_assert();
return rc;
}
if (status & CDK_KEY_INVALID) *verify |= GNUTLS_CERT_INVALID;
if (status & CDK_KEY_REVOKED) *verify |= GNUTLS_CERT_REVOKED;
#warning CHECK HERE IF THE WAS ANY SIGNER
return 0;
}
/**
* gnutls_openpgp_key_verify_self - Verify the self signature on the key
* @key: the structure that holds the key.
* @flags: unused (should be 0)
* @verify: will hold the key verification output.
*
* Verify the self signature in the key.
*
* The certificate verification output will be put in 'verify' and will be
* one or more of the gnutls_certificate_status enumerated elements bitwise or'd.
*
* GNUTLS_CERT_INVALID\: The signature on the key is invalid.
*
* GNUTLS_CERT_REVOKED\: The key has been revoked.
*
* Returns 0 on success.
**/
int gnutls_openpgp_key_verify_self( gnutls_openpgp_key key,
unsigned int flags, unsigned int *verify)
{
*verify = 0;
#warning PUT SOME ACTUAL CODE
return 0;
}
/**
* gnutls_openpgp_key_verify_trustdb - Verify all signatures on the key
* @key: the structure that holds the key.
* @trustdb: holds the trustdb to check against
* @flags: unused (should be 0)
* @verify: will hold the certificate verification output.
*
* Checks if the key is revoked or disabled, in the trustdb.
* The verification output will be put in 'verify' and will be
* one or more of the gnutls_certificate_status enumerated elements bitwise or'd.
*
* GNUTLS_CERT_INVALID\: A signature on the key is invalid.
*
* GNUTLS_CERT_REVOKED\: The key has been revoked.
*
* NOTE: this function does not verify using any "web of trust". You
* may use GnuPG for that purpose, or any other external PGP application.
*
* Returns 0 on success.
**/
int gnutls_openpgp_key_verify_trustdb( gnutls_openpgp_key key,
gnutls_openpgp_trustdb trustdb,
unsigned int flags, unsigned int *verify)
{
cdk_keydb_hd_t hd = NULL;
int rc = 0;
if( !key) {
gnutls_assert();
return GNUTLS_E_NO_CERTIFICATE_FOUND;
}
if( !trustdb) {
gnutls_assert( );
return GNUTLS_E_INVALID_REQUEST;
}
rc = openpgp_get_key_trust( trustdb, key, verify);
if( rc)
goto leave;
rc = 0;
leave:
cdk_free( hd );
if( rc ) {
gnutls_assert();
}
return rc;
}
#endif
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