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kerberos: Support non-DCE style contexts. 

Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hans Leidekker 2018-02-06 09:55:00 +01:00 committed by Alexandre Julliard
parent 1f1e7259e6
commit ddfa042db1
1 changed files with 139 additions and 29 deletions
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168
dlls/kerberos/krb5_ap.c
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@ -590,12 +590,15 @@ MAKE_FUNCPTR(gss_display_status);
MAKE_FUNCPTR(gss_get_mic);
MAKE_FUNCPTR(gss_import_name);
MAKE_FUNCPTR(gss_init_sec_context);
MAKE_FUNCPTR(gss_inquire_context);
MAKE_FUNCPTR(gss_release_buffer);
MAKE_FUNCPTR(gss_release_cred);
MAKE_FUNCPTR(gss_release_iov_buffer);
MAKE_FUNCPTR(gss_release_name);
MAKE_FUNCPTR(gss_unwrap);
MAKE_FUNCPTR(gss_unwrap_iov);
MAKE_FUNCPTR(gss_verify_mic);
MAKE_FUNCPTR(gss_wrap);
MAKE_FUNCPTR(gss_wrap_iov);
#undef MAKE_FUNCPTR
@ -621,12 +624,15 @@ static BOOL load_gssapi_krb5(void)
LOAD_FUNCPTR(gss_get_mic)
LOAD_FUNCPTR(gss_import_name)
LOAD_FUNCPTR(gss_init_sec_context)
LOAD_FUNCPTR(gss_inquire_context)
LOAD_FUNCPTR(gss_release_buffer)
LOAD_FUNCPTR(gss_release_cred)
LOAD_FUNCPTR(gss_release_iov_buffer)
LOAD_FUNCPTR(gss_release_name)
LOAD_FUNCPTR(gss_unwrap)
LOAD_FUNCPTR(gss_unwrap_iov)
LOAD_FUNCPTR(gss_verify_mic)
LOAD_FUNCPTR(gss_wrap)
LOAD_FUNCPTR(gss_wrap_iov)
#undef LOAD_FUNCPTR
@ -757,7 +763,7 @@ static SECURITY_STATUS name_sspi_to_gss( const UNICODE_STRING *name_str, gss_nam
static ULONG flags_isc_req_to_gss( ULONG flags )
{
ULONG ret = GSS_C_DCE_STYLE;
ULONG ret = 0;
if (flags & ISC_REQ_DELEGATE) ret |= GSS_C_DELEG_FLAG;
if (flags & ISC_REQ_MUTUAL_AUTH) ret |= GSS_C_MUTUAL_FLAG;
if (flags & ISC_REQ_REPLAY_DETECT) ret |= GSS_C_REPLAY_FLAG;
@ -765,6 +771,7 @@ static ULONG flags_isc_req_to_gss( ULONG flags )
if (flags & ISC_REQ_CONFIDENTIALITY) ret |= GSS_C_CONF_FLAG;
if (flags & ISC_REQ_INTEGRITY) ret |= GSS_C_INTEG_FLAG;
if (flags & ISC_REQ_NULL_SESSION) ret |= GSS_C_ANON_FLAG;
if (flags & ISC_REQ_USE_DCE_STYLE) ret |= GSS_C_DCE_STYLE;
return ret;
}
@ -794,6 +801,13 @@ static ULONG flags_gss_to_asc_ret( ULONG flags )
return ret;
}
static BOOL is_dce_style_context( gss_ctx_id_t ctxt_handle )
{
OM_uint32 ret, minor_status, flags;
ret = pgss_inquire_context( &minor_status, ctxt_handle, NULL, NULL, NULL, NULL, &flags, NULL, NULL );
return (ret == GSS_S_COMPLETE && (flags & GSS_C_DCE_STYLE));
}
static int get_buffer_index( SecBufferDesc *desc, DWORD type )
{
UINT i;
@ -1079,10 +1093,21 @@ static NTSTATUS NTAPI kerberos_SpQueryContextAttributes( LSA_SEC_HANDLE context,
case SECPKG_ATTR_SIZES:
{
SecPkgContext_Sizes *sizes = (SecPkgContext_Sizes *)buffer;
ULONG size_max_signature = 37, size_security_trailer = 49;
#ifdef SONAME_LIBGSSAPI_KRB5
gss_ctx_id_t ctxt_handle;
if (!(ctxt_handle = ctxthandle_sspi_to_gss( context ))) return SEC_E_INVALID_HANDLE;
if (is_dce_style_context( ctxt_handle ))
{
size_max_signature = 28;
size_security_trailer = 76;
}
#endif
sizes->cbMaxToken = KERBEROS_MAX_BUF;
sizes->cbMaxSignature = 37;
sizes->cbMaxSignature = size_max_signature;
sizes->cbBlockSize = 1;
sizes->cbSecurityTrailer = 49;
sizes->cbSecurityTrailer = size_security_trailer;
return SEC_E_OK;
}
case SECPKG_ATTR_NEGOTIATION_INFO:
@ -1260,26 +1285,13 @@ static SECURITY_STATUS SEC_ENTRY kerberos_SpVerifySignature( LSA_SEC_HANDLE cont
#endif
}
static NTSTATUS NTAPI kerberos_SpSealMessage( LSA_SEC_HANDLE context, ULONG quality_of_protection,
SecBufferDesc *message, ULONG message_seq_no )
{
#ifdef SONAME_LIBGSSAPI_KRB5
gss_ctx_id_t ctxt_handle;
static NTSTATUS seal_message_iov( gss_ctx_id_t ctxt_handle, SecBufferDesc *message )
{
gss_iov_buffer_desc iov[4];
OM_uint32 ret, minor_status;
int token_idx, data_idx, conf_state;
TRACE( "(%lx 0x%08x %p %u)\n", context, quality_of_protection, message, message_seq_no );
if (quality_of_protection)
{
FIXME( "flags %08x not supported\n", quality_of_protection );
return SEC_E_UNSUPPORTED_FUNCTION;
}
if (message_seq_no) FIXME( "ignoring message_seq_no %u\n", message_seq_no );
if (!context) return SEC_E_INVALID_HANDLE;
ctxt_handle = ctxthandle_sspi_to_gss( context );
/* FIXME: multiple data buffers, read-only buffers */
if ((data_idx = get_buffer_index( message, SECBUFFER_DATA )) == -1) return SEC_E_INVALID_TOKEN;
if ((token_idx = get_buffer_index( message, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
@ -1311,27 +1323,75 @@ static NTSTATUS NTAPI kerberos_SpSealMessage( LSA_SEC_HANDLE context, ULONG qual
}
return status_gss_to_sspi( ret );
}
static NTSTATUS seal_message( gss_ctx_id_t ctxt_handle, SecBufferDesc *message )
{
gss_buffer_desc input, output;
OM_uint32 ret, minor_status;
int token_idx, data_idx, conf_state;
/* FIXME: multiple data buffers, read-only buffers */
if ((data_idx = get_buffer_index( message, SECBUFFER_DATA )) == -1) return SEC_E_INVALID_TOKEN;
if ((token_idx = get_buffer_index( message, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
input.length = message->pBuffers[data_idx].cbBuffer;
input.value = message->pBuffers[data_idx].pvBuffer;
ret = pgss_wrap( &minor_status, ctxt_handle, 1, GSS_C_QOP_DEFAULT, &input, &conf_state, &output );
TRACE( "gss_wrap returned %08x minor status %08x\n", ret, minor_status );
if (GSS_ERROR(ret)) trace_gss_status( ret, minor_status );
if (ret == GSS_S_COMPLETE)
{
DWORD len_data = message->pBuffers[data_idx].cbBuffer, len_token = message->pBuffers[token_idx].cbBuffer;
if (len_token < output.length - len_data)
{
TRACE( "buffer too small %lu > %u\n", (SIZE_T)output.length - len_data, len_token );
pgss_release_buffer( &minor_status, &output );
return SEC_E_BUFFER_TOO_SMALL;
}
memcpy( message->pBuffers[data_idx].pvBuffer, output.value, len_data );
memcpy( message->pBuffers[token_idx].pvBuffer, (char *)output.value + len_data, output.length - len_data );
message->pBuffers[token_idx].cbBuffer = output.length - len_data;
pgss_release_buffer( &minor_status, &output );
}
return status_gss_to_sspi( ret );
}
#endif
static NTSTATUS NTAPI kerberos_SpSealMessage( LSA_SEC_HANDLE context, ULONG quality_of_protection,
SecBufferDesc *message, ULONG message_seq_no )
{
#ifdef SONAME_LIBGSSAPI_KRB5
gss_ctx_id_t ctxt_handle;
TRACE( "(%lx 0x%08x %p %u)\n", context, quality_of_protection, message, message_seq_no );
if (quality_of_protection)
{
FIXME( "flags %08x not supported\n", quality_of_protection );
return SEC_E_UNSUPPORTED_FUNCTION;
}
if (message_seq_no) FIXME( "ignoring message_seq_no %u\n", message_seq_no );
if (!context) return SEC_E_INVALID_HANDLE;
ctxt_handle = ctxthandle_sspi_to_gss( context );
if (is_dce_style_context( ctxt_handle )) return seal_message_iov( ctxt_handle, message );
return seal_message( ctxt_handle, message );
#else
FIXME( "(%lx 0x%08x %p %u)\n", context, quality_of_protection, message, message_seq_no );
return SEC_E_UNSUPPORTED_FUNCTION;
#endif
}
static NTSTATUS NTAPI kerberos_SpUnsealMessage( LSA_SEC_HANDLE context, SecBufferDesc *message,
ULONG message_seq_no, ULONG *quality_of_protection )
{
#ifdef SONAME_LIBGSSAPI_KRB5
gss_ctx_id_t ctxt_handle;
static NTSTATUS unseal_message_iov( gss_ctx_id_t ctxt_handle, SecBufferDesc *message, ULONG *quality_of_protection )
{
gss_iov_buffer_desc iov[4];
OM_uint32 ret, minor_status;
int token_idx, data_idx, conf_state;
TRACE( "(%lx %p %u %p)\n", context, message, message_seq_no, quality_of_protection );
if (message_seq_no) FIXME( "ignoring message_seq_no %u\n", message_seq_no );
if (!context) return SEC_E_INVALID_HANDLE;
ctxt_handle = ctxthandle_sspi_to_gss( context );
if ((data_idx = get_buffer_index( message, SECBUFFER_DATA )) == -1) return SEC_E_INVALID_TOKEN;
if ((token_idx = get_buffer_index( message, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
@ -1354,10 +1414,60 @@ static NTSTATUS NTAPI kerberos_SpUnsealMessage( LSA_SEC_HANDLE context, SecBuffe
ret = pgss_unwrap_iov( &minor_status, ctxt_handle, &conf_state, NULL, iov, 4 );
TRACE( "gss_unwrap_iov returned %08x minor status %08x\n", ret, minor_status );
if (GSS_ERROR(ret)) trace_gss_status( ret, minor_status );
if (ret == GSS_S_COMPLETE && quality_of_protection) *quality_of_protection = (conf_state ? 0 : SECQOP_WRAP_NO_ENCRYPT);
if (ret == GSS_S_COMPLETE && quality_of_protection)
{
*quality_of_protection = (conf_state ? 0 : SECQOP_WRAP_NO_ENCRYPT);
}
return status_gss_to_sspi( ret );
}
static NTSTATUS unseal_message( gss_ctx_id_t ctxt_handle, SecBufferDesc *message, ULONG *quality_of_protection )
{
gss_buffer_desc input, output;
OM_uint32 ret, minor_status;
int token_idx, data_idx, conf_state;
DWORD len_data, len_token;
if ((data_idx = get_buffer_index( message, SECBUFFER_DATA )) == -1) return SEC_E_INVALID_TOKEN;
if ((token_idx = get_buffer_index( message, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
len_data = message->pBuffers[data_idx].cbBuffer;
len_token = message->pBuffers[token_idx].cbBuffer;
input.length = len_data + len_token;
if (!(input.value = heap_alloc( input.length ))) return SEC_E_INSUFFICIENT_MEMORY;
memcpy( input.value, message->pBuffers[data_idx].pvBuffer, len_data );
memcpy( (char *)input.value + len_data, message->pBuffers[token_idx].pvBuffer, len_token );
ret = pgss_unwrap( &minor_status, ctxt_handle, &input, &output, &conf_state, NULL );
heap_free( input.value );
TRACE( "gss_unwrap returned %08x minor status %08x\n", ret, minor_status );
if (GSS_ERROR(ret)) trace_gss_status( ret, minor_status );
if (ret == GSS_S_COMPLETE)
{
if (quality_of_protection) *quality_of_protection = (conf_state ? 0 : SECQOP_WRAP_NO_ENCRYPT);
memcpy( message->pBuffers[data_idx].pvBuffer, output.value, len_data );
pgss_release_buffer( &minor_status, &output );
}
return status_gss_to_sspi( ret );
}
#endif
static NTSTATUS NTAPI kerberos_SpUnsealMessage( LSA_SEC_HANDLE context, SecBufferDesc *message,
ULONG message_seq_no, ULONG *quality_of_protection )
{
#ifdef SONAME_LIBGSSAPI_KRB5
gss_ctx_id_t ctxt_handle;
TRACE( "(%lx %p %u %p)\n", context, message, message_seq_no, quality_of_protection );
if (message_seq_no) FIXME( "ignoring message_seq_no %u\n", message_seq_no );
if (!context) return SEC_E_INVALID_HANDLE;
ctxt_handle = ctxthandle_sspi_to_gss( context );
if (is_dce_style_context( ctxt_handle )) return unseal_message_iov( ctxt_handle, message, quality_of_protection );
return unseal_message( ctxt_handle, message, quality_of_protection );
#else
FIXME( "(%lx %p %u %p)\n", context, message, message_seq_no, quality_of_protection );
return SEC_E_UNSUPPORTED_FUNCTION;