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secur32: Handle SECPKG_ATTR_STREAM_SIZES in schan_QueryContextAttributesW().

This commit is contained in:
Henri Verbeet 2008-12-28 22:21:35 +01:00 committed by Alexandre Julliard
parent 3c114a88ca
commit 95fd876266
1 changed files with 64 additions and 0 deletions
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64
dlls/secur32/schannel.c
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@ -48,6 +48,7 @@ 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_cipher_get);
MAKE_FUNCPTR(gnutls_credentials_set);
MAKE_FUNCPTR(gnutls_deinit);
MAKE_FUNCPTR(gnutls_global_deinit);
@ -56,6 +57,8 @@ 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_mac_get);
MAKE_FUNCPTR(gnutls_mac_get_key_size);
MAKE_FUNCPTR(gnutls_perror);
MAKE_FUNCPTR(gnutls_set_default_priority);
MAKE_FUNCPTR(gnutls_transport_set_errno);
@ -800,14 +803,69 @@ static SECURITY_STATUS SEC_ENTRY schan_InitializeSecurityContextA(
return ret;
}
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 SECURITY_STATUS SEC_ENTRY schan_QueryContextAttributesW(
PCtxtHandle context_handle, ULONG attribute, PVOID buffer)
{
struct schan_context *ctx;
TRACE("context_handle %p, attribute %#x, buffer %p\n",
context_handle, attribute, buffer);
if (!context_handle) return SEC_E_INVALID_HANDLE;
ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX);
switch(attribute)
{
case SECPKG_ATTR_STREAM_SIZES:
{
SecPkgContext_StreamSizes *stream_sizes = (SecPkgContext_StreamSizes *)buffer;
gnutls_mac_algorithm_t mac = pgnutls_mac_get(ctx->session);
size_t mac_size = pgnutls_mac_get_key_size(mac);
gnutls_cipher_algorithm_t cipher = pgnutls_cipher_get(ctx->session);
unsigned int block_size = schannel_get_cipher_block_size(cipher);
TRACE("Using %zu mac bytes, block size %u\n", mac_size, block_size);
/* These are defined by the TLS RFC */
stream_sizes->cbHeader = 5;
stream_sizes->cbTrailer = mac_size + 256; /* Max 255 bytes padding + 1 for padding size */
stream_sizes->cbMaximumMessage = 1 << 14;
stream_sizes->cbBuffers = 4;
stream_sizes->cbBlockSize = block_size;
return SEC_E_OK;
}
default:
FIXME("Unhandled attribute %#x\n", attribute);
return SEC_E_UNSUPPORTED_FUNCTION;
@ -822,6 +880,9 @@ static SECURITY_STATUS SEC_ENTRY schan_QueryContextAttributesA(
switch(attribute)
{
case SECPKG_ATTR_STREAM_SIZES:
return schan_QueryContextAttributesW(context_handle, attribute, buffer);
default:
FIXME("Unhandled attribute %#x\n", attribute);
return SEC_E_UNSUPPORTED_FUNCTION;
@ -961,6 +1022,7 @@ void SECUR32_initSchannelSP(void)
LOAD_FUNCPTR(gnutls_alert_get_name)
LOAD_FUNCPTR(gnutls_certificate_allocate_credentials)
LOAD_FUNCPTR(gnutls_certificate_free_credentials)
LOAD_FUNCPTR(gnutls_cipher_get)
LOAD_FUNCPTR(gnutls_credentials_set)
LOAD_FUNCPTR(gnutls_deinit)
LOAD_FUNCPTR(gnutls_global_deinit)
@ -969,6 +1031,8 @@ void SECUR32_initSchannelSP(void)
LOAD_FUNCPTR(gnutls_global_set_log_level)
LOAD_FUNCPTR(gnutls_handshake)
LOAD_FUNCPTR(gnutls_init)
LOAD_FUNCPTR(gnutls_mac_get)
LOAD_FUNCPTR(gnutls_mac_get_key_size)
LOAD_FUNCPTR(gnutls_perror)
LOAD_FUNCPTR(gnutls_set_default_priority)
LOAD_FUNCPTR(gnutls_transport_set_errno)