484 lines
14 KiB
C
484 lines
14 KiB
C
/*
|
|
* GnuTLS-based implementation of the schannel (SSL/TLS) provider.
|
|
*
|
|
* Copyright 2005 Juan Lang
|
|
* Copyright 2008 Henri Verbeet
|
|
*
|
|
* This 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <stdarg.h>
|
|
#ifdef SONAME_LIBGNUTLS
|
|
#include <gnutls/gnutls.h>
|
|
#endif
|
|
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "sspi.h"
|
|
#include "schannel.h"
|
|
#include "secur32_priv.h"
|
|
#include "wine/debug.h"
|
|
#include "wine/library.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(secur32);
|
|
|
|
#if defined(SONAME_LIBGNUTLS) && !defined(HAVE_SECURITY_SECURITY_H)
|
|
|
|
static void *libgnutls_handle;
|
|
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
|
|
MAKE_FUNCPTR(gnutls_alert_get);
|
|
MAKE_FUNCPTR(gnutls_alert_get_name);
|
|
MAKE_FUNCPTR(gnutls_certificate_allocate_credentials);
|
|
MAKE_FUNCPTR(gnutls_certificate_free_credentials);
|
|
MAKE_FUNCPTR(gnutls_certificate_get_peers);
|
|
MAKE_FUNCPTR(gnutls_cipher_get);
|
|
MAKE_FUNCPTR(gnutls_cipher_get_key_size);
|
|
MAKE_FUNCPTR(gnutls_credentials_set);
|
|
MAKE_FUNCPTR(gnutls_deinit);
|
|
MAKE_FUNCPTR(gnutls_global_deinit);
|
|
MAKE_FUNCPTR(gnutls_global_init);
|
|
MAKE_FUNCPTR(gnutls_global_set_log_function);
|
|
MAKE_FUNCPTR(gnutls_global_set_log_level);
|
|
MAKE_FUNCPTR(gnutls_handshake);
|
|
MAKE_FUNCPTR(gnutls_init);
|
|
MAKE_FUNCPTR(gnutls_kx_get);
|
|
MAKE_FUNCPTR(gnutls_mac_get);
|
|
MAKE_FUNCPTR(gnutls_mac_get_key_size);
|
|
MAKE_FUNCPTR(gnutls_perror);
|
|
MAKE_FUNCPTR(gnutls_protocol_get_version);
|
|
MAKE_FUNCPTR(gnutls_set_default_priority);
|
|
MAKE_FUNCPTR(gnutls_record_get_max_size);
|
|
MAKE_FUNCPTR(gnutls_record_recv);
|
|
MAKE_FUNCPTR(gnutls_record_send);
|
|
MAKE_FUNCPTR(gnutls_transport_get_ptr);
|
|
MAKE_FUNCPTR(gnutls_transport_set_errno);
|
|
MAKE_FUNCPTR(gnutls_transport_set_ptr);
|
|
MAKE_FUNCPTR(gnutls_transport_set_pull_function);
|
|
MAKE_FUNCPTR(gnutls_transport_set_push_function);
|
|
#undef MAKE_FUNCPTR
|
|
|
|
|
|
|
|
static ssize_t schan_pull_adapter(gnutls_transport_ptr_t transport,
|
|
void *buff, size_t buff_len)
|
|
{
|
|
struct schan_transport *t = (struct schan_transport*)transport;
|
|
gnutls_session_t s = (gnutls_session_t)schan_session_for_transport(t);
|
|
|
|
int ret = schan_pull(transport, buff, &buff_len);
|
|
if (ret)
|
|
{
|
|
pgnutls_transport_set_errno(s, ret);
|
|
return -1;
|
|
}
|
|
|
|
return buff_len;
|
|
}
|
|
|
|
static ssize_t schan_push_adapter(gnutls_transport_ptr_t transport,
|
|
const void *buff, size_t buff_len)
|
|
{
|
|
struct schan_transport *t = (struct schan_transport*)transport;
|
|
gnutls_session_t s = (gnutls_session_t)schan_session_for_transport(t);
|
|
|
|
int ret = schan_push(transport, buff, &buff_len);
|
|
if (ret)
|
|
{
|
|
pgnutls_transport_set_errno(s, ret);
|
|
return -1;
|
|
}
|
|
|
|
return buff_len;
|
|
}
|
|
|
|
BOOL schan_imp_create_session(schan_imp_session *session, BOOL is_server,
|
|
schan_imp_certificate_credentials cred)
|
|
{
|
|
gnutls_session_t *s = (gnutls_session_t*)session;
|
|
|
|
int err = pgnutls_init(s, is_server ? GNUTLS_SERVER : GNUTLS_CLIENT);
|
|
if (err != GNUTLS_E_SUCCESS)
|
|
{
|
|
pgnutls_perror(err);
|
|
return FALSE;
|
|
}
|
|
|
|
/* FIXME: We should be using the information from the credentials here. */
|
|
FIXME("Using hardcoded \"NORMAL\" priority\n");
|
|
err = pgnutls_set_default_priority(*s);
|
|
if (err != GNUTLS_E_SUCCESS)
|
|
{
|
|
pgnutls_perror(err);
|
|
pgnutls_deinit(*s);
|
|
return FALSE;
|
|
}
|
|
|
|
err = pgnutls_credentials_set(*s, GNUTLS_CRD_CERTIFICATE,
|
|
(gnutls_certificate_credentials)cred);
|
|
if (err != GNUTLS_E_SUCCESS)
|
|
{
|
|
pgnutls_perror(err);
|
|
pgnutls_deinit(*s);
|
|
return FALSE;
|
|
}
|
|
|
|
pgnutls_transport_set_pull_function(*s, schan_pull_adapter);
|
|
pgnutls_transport_set_push_function(*s, schan_push_adapter);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void schan_imp_dispose_session(schan_imp_session session)
|
|
{
|
|
gnutls_session_t s = (gnutls_session_t)session;
|
|
pgnutls_deinit(s);
|
|
}
|
|
|
|
void schan_imp_set_session_transport(schan_imp_session session,
|
|
struct schan_transport *t)
|
|
{
|
|
gnutls_session_t s = (gnutls_session_t)session;
|
|
pgnutls_transport_set_ptr(s, (gnutls_transport_ptr_t)t);
|
|
}
|
|
|
|
SECURITY_STATUS schan_imp_handshake(schan_imp_session session)
|
|
{
|
|
gnutls_session_t s = (gnutls_session_t)session;
|
|
int err = pgnutls_handshake(s);
|
|
switch(err)
|
|
{
|
|
case GNUTLS_E_SUCCESS:
|
|
TRACE("Handshake completed\n");
|
|
return SEC_E_OK;
|
|
|
|
case GNUTLS_E_AGAIN:
|
|
TRACE("Continue...\n");
|
|
return SEC_I_CONTINUE_NEEDED;
|
|
|
|
case GNUTLS_E_WARNING_ALERT_RECEIVED:
|
|
case GNUTLS_E_FATAL_ALERT_RECEIVED:
|
|
{
|
|
gnutls_alert_description_t alert = pgnutls_alert_get(s);
|
|
const char *alert_name = pgnutls_alert_get_name(alert);
|
|
WARN("ALERT: %d %s\n", alert, alert_name);
|
|
return SEC_E_INTERNAL_ERROR;
|
|
}
|
|
|
|
default:
|
|
pgnutls_perror(err);
|
|
return SEC_E_INTERNAL_ERROR;
|
|
}
|
|
|
|
/* Never reached */
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
static unsigned int schannel_get_cipher_block_size(gnutls_cipher_algorithm_t cipher)
|
|
{
|
|
const struct
|
|
{
|
|
gnutls_cipher_algorithm_t cipher;
|
|
unsigned int block_size;
|
|
}
|
|
algorithms[] =
|
|
{
|
|
{GNUTLS_CIPHER_3DES_CBC, 8},
|
|
{GNUTLS_CIPHER_AES_128_CBC, 16},
|
|
{GNUTLS_CIPHER_AES_256_CBC, 16},
|
|
{GNUTLS_CIPHER_ARCFOUR_128, 1},
|
|
{GNUTLS_CIPHER_ARCFOUR_40, 1},
|
|
{GNUTLS_CIPHER_DES_CBC, 8},
|
|
{GNUTLS_CIPHER_NULL, 1},
|
|
{GNUTLS_CIPHER_RC2_40_CBC, 8},
|
|
};
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < sizeof(algorithms) / sizeof(*algorithms); ++i)
|
|
{
|
|
if (algorithms[i].cipher == cipher)
|
|
return algorithms[i].block_size;
|
|
}
|
|
|
|
FIXME("Unknown cipher %#x, returning 1\n", cipher);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static DWORD schannel_get_protocol(gnutls_protocol_t proto)
|
|
{
|
|
/* FIXME: currently schannel only implements client connections, but
|
|
* there's no reason it couldn't be used for servers as well. The
|
|
* context doesn't tell us which it is, so assume client for now.
|
|
*/
|
|
switch (proto)
|
|
{
|
|
case GNUTLS_SSL3: return SP_PROT_SSL3_CLIENT;
|
|
case GNUTLS_TLS1_0: return SP_PROT_TLS1_CLIENT;
|
|
default:
|
|
FIXME("unknown protocol %d\n", proto);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static ALG_ID schannel_get_cipher_algid(gnutls_cipher_algorithm_t cipher)
|
|
{
|
|
switch (cipher)
|
|
{
|
|
case GNUTLS_CIPHER_UNKNOWN:
|
|
case GNUTLS_CIPHER_NULL: return 0;
|
|
case GNUTLS_CIPHER_ARCFOUR_40:
|
|
case GNUTLS_CIPHER_ARCFOUR_128: return CALG_RC4;
|
|
case GNUTLS_CIPHER_DES_CBC:
|
|
case GNUTLS_CIPHER_3DES_CBC: return CALG_DES;
|
|
case GNUTLS_CIPHER_AES_128_CBC:
|
|
case GNUTLS_CIPHER_AES_256_CBC: return CALG_AES;
|
|
case GNUTLS_CIPHER_RC2_40_CBC: return CALG_RC2;
|
|
default:
|
|
FIXME("unknown algorithm %d\n", cipher);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static ALG_ID schannel_get_mac_algid(gnutls_mac_algorithm_t mac)
|
|
{
|
|
switch (mac)
|
|
{
|
|
case GNUTLS_MAC_UNKNOWN:
|
|
case GNUTLS_MAC_NULL: return 0;
|
|
case GNUTLS_MAC_MD5: return CALG_MD5;
|
|
case GNUTLS_MAC_SHA1:
|
|
case GNUTLS_MAC_SHA256:
|
|
case GNUTLS_MAC_SHA384:
|
|
case GNUTLS_MAC_SHA512: return CALG_SHA;
|
|
default:
|
|
FIXME("unknown algorithm %d\n", mac);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static ALG_ID schannel_get_kx_algid(gnutls_kx_algorithm_t kx)
|
|
{
|
|
switch (kx)
|
|
{
|
|
case GNUTLS_KX_RSA: return CALG_RSA_KEYX;
|
|
case GNUTLS_KX_DHE_DSS:
|
|
case GNUTLS_KX_DHE_RSA: return CALG_DH_EPHEM;
|
|
default:
|
|
FIXME("unknown algorithm %d\n", kx);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
unsigned int schan_imp_get_session_cipher_block_size(schan_imp_session session)
|
|
{
|
|
gnutls_session_t s = (gnutls_session_t)session;
|
|
gnutls_cipher_algorithm_t cipher = pgnutls_cipher_get(s);
|
|
return schannel_get_cipher_block_size(cipher);
|
|
}
|
|
|
|
unsigned int schan_imp_get_max_message_size(schan_imp_session session)
|
|
{
|
|
return pgnutls_record_get_max_size((gnutls_session_t)session);
|
|
}
|
|
|
|
SECURITY_STATUS schan_imp_get_connection_info(schan_imp_session session,
|
|
SecPkgContext_ConnectionInfo *info)
|
|
{
|
|
gnutls_session_t s = (gnutls_session_t)session;
|
|
gnutls_protocol_t proto = pgnutls_protocol_get_version(s);
|
|
gnutls_cipher_algorithm_t alg = pgnutls_cipher_get(s);
|
|
gnutls_mac_algorithm_t mac = pgnutls_mac_get(s);
|
|
gnutls_kx_algorithm_t kx = pgnutls_kx_get(s);
|
|
|
|
info->dwProtocol = schannel_get_protocol(proto);
|
|
info->aiCipher = schannel_get_cipher_algid(alg);
|
|
info->dwCipherStrength = pgnutls_cipher_get_key_size(alg);
|
|
info->aiHash = schannel_get_mac_algid(mac);
|
|
info->dwHashStrength = pgnutls_mac_get_key_size(mac);
|
|
info->aiExch = schannel_get_kx_algid(kx);
|
|
/* FIXME: info->dwExchStrength? */
|
|
info->dwExchStrength = 0;
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
SECURITY_STATUS schan_imp_get_session_peer_certificate(schan_imp_session session,
|
|
PCCERT_CONTEXT *cert)
|
|
{
|
|
gnutls_session_t s = (gnutls_session_t)session;
|
|
unsigned int list_size;
|
|
const gnutls_datum_t *datum;
|
|
|
|
datum = pgnutls_certificate_get_peers(s, &list_size);
|
|
if (datum)
|
|
{
|
|
*cert = CertCreateCertificateContext(X509_ASN_ENCODING, datum->data,
|
|
datum->size);
|
|
if (!*cert)
|
|
return GetLastError();
|
|
else
|
|
return SEC_E_OK;
|
|
}
|
|
else
|
|
return SEC_E_INTERNAL_ERROR;
|
|
}
|
|
|
|
SECURITY_STATUS schan_imp_send(schan_imp_session session, const void *buffer,
|
|
SIZE_T *length)
|
|
{
|
|
gnutls_session_t s = (gnutls_session_t)session;
|
|
ssize_t ret;
|
|
|
|
again:
|
|
ret = pgnutls_record_send(s, buffer, *length);
|
|
|
|
if (ret >= 0)
|
|
*length = ret;
|
|
else if (ret == GNUTLS_E_AGAIN)
|
|
{
|
|
struct schan_transport *t = (struct schan_transport *)pgnutls_transport_get_ptr(s);
|
|
SIZE_T count = 0;
|
|
|
|
if (schan_get_buffer(t, &t->out, &count))
|
|
goto again;
|
|
|
|
return SEC_I_CONTINUE_NEEDED;
|
|
}
|
|
else
|
|
{
|
|
pgnutls_perror(ret);
|
|
return SEC_E_INTERNAL_ERROR;
|
|
}
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
SECURITY_STATUS schan_imp_recv(schan_imp_session session, void *buffer,
|
|
SIZE_T *length)
|
|
{
|
|
gnutls_session_t s = (gnutls_session_t)session;
|
|
ssize_t ret = pgnutls_record_recv(s, buffer, *length);
|
|
if (ret >= 0)
|
|
*length = ret;
|
|
else if (ret == GNUTLS_E_AGAIN)
|
|
return SEC_I_CONTINUE_NEEDED;
|
|
else
|
|
{
|
|
pgnutls_perror(ret);
|
|
return SEC_E_INTERNAL_ERROR;
|
|
}
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
BOOL schan_imp_allocate_certificate_credentials(schan_imp_certificate_credentials *c)
|
|
{
|
|
int ret = pgnutls_certificate_allocate_credentials((gnutls_certificate_credentials*)c);
|
|
if (ret != GNUTLS_E_SUCCESS)
|
|
pgnutls_perror(ret);
|
|
return (ret == GNUTLS_E_SUCCESS);
|
|
}
|
|
|
|
void schan_imp_free_certificate_credentials(schan_imp_certificate_credentials c)
|
|
{
|
|
pgnutls_certificate_free_credentials((gnutls_certificate_credentials)c);
|
|
}
|
|
|
|
static void schan_gnutls_log(int level, const char *msg)
|
|
{
|
|
TRACE("<%d> %s", level, msg);
|
|
}
|
|
|
|
BOOL schan_imp_init(void)
|
|
{
|
|
int ret;
|
|
|
|
libgnutls_handle = wine_dlopen(SONAME_LIBGNUTLS, RTLD_NOW, NULL, 0);
|
|
if (!libgnutls_handle)
|
|
{
|
|
WARN("Failed to load libgnutls.\n");
|
|
return FALSE;
|
|
}
|
|
|
|
#define LOAD_FUNCPTR(f) \
|
|
if (!(p##f = wine_dlsym(libgnutls_handle, #f, NULL, 0))) \
|
|
{ \
|
|
ERR("Failed to load %s\n", #f); \
|
|
goto fail; \
|
|
}
|
|
|
|
LOAD_FUNCPTR(gnutls_alert_get)
|
|
LOAD_FUNCPTR(gnutls_alert_get_name)
|
|
LOAD_FUNCPTR(gnutls_certificate_allocate_credentials)
|
|
LOAD_FUNCPTR(gnutls_certificate_free_credentials)
|
|
LOAD_FUNCPTR(gnutls_certificate_get_peers)
|
|
LOAD_FUNCPTR(gnutls_cipher_get)
|
|
LOAD_FUNCPTR(gnutls_cipher_get_key_size)
|
|
LOAD_FUNCPTR(gnutls_credentials_set)
|
|
LOAD_FUNCPTR(gnutls_deinit)
|
|
LOAD_FUNCPTR(gnutls_global_deinit)
|
|
LOAD_FUNCPTR(gnutls_global_init)
|
|
LOAD_FUNCPTR(gnutls_global_set_log_function)
|
|
LOAD_FUNCPTR(gnutls_global_set_log_level)
|
|
LOAD_FUNCPTR(gnutls_handshake)
|
|
LOAD_FUNCPTR(gnutls_init)
|
|
LOAD_FUNCPTR(gnutls_kx_get)
|
|
LOAD_FUNCPTR(gnutls_mac_get)
|
|
LOAD_FUNCPTR(gnutls_mac_get_key_size)
|
|
LOAD_FUNCPTR(gnutls_perror)
|
|
LOAD_FUNCPTR(gnutls_protocol_get_version)
|
|
LOAD_FUNCPTR(gnutls_set_default_priority)
|
|
LOAD_FUNCPTR(gnutls_record_get_max_size);
|
|
LOAD_FUNCPTR(gnutls_record_recv);
|
|
LOAD_FUNCPTR(gnutls_record_send);
|
|
LOAD_FUNCPTR(gnutls_transport_get_ptr)
|
|
LOAD_FUNCPTR(gnutls_transport_set_errno)
|
|
LOAD_FUNCPTR(gnutls_transport_set_ptr)
|
|
LOAD_FUNCPTR(gnutls_transport_set_pull_function)
|
|
LOAD_FUNCPTR(gnutls_transport_set_push_function)
|
|
#undef LOAD_FUNCPTR
|
|
|
|
ret = pgnutls_global_init();
|
|
if (ret != GNUTLS_E_SUCCESS)
|
|
{
|
|
pgnutls_perror(ret);
|
|
goto fail;
|
|
}
|
|
|
|
if (TRACE_ON(secur32))
|
|
{
|
|
pgnutls_global_set_log_level(4);
|
|
pgnutls_global_set_log_function(schan_gnutls_log);
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
fail:
|
|
wine_dlclose(libgnutls_handle, NULL, 0);
|
|
libgnutls_handle = NULL;
|
|
return FALSE;
|
|
}
|
|
|
|
void schan_imp_deinit(void)
|
|
{
|
|
pgnutls_global_deinit();
|
|
wine_dlclose(libgnutls_handle, NULL, 0);
|
|
libgnutls_handle = NULL;
|
|
}
|
|
|
|
#endif /* SONAME_LIBGNUTLS && !HAVE_SECURITY_SECURITY_H */
|