1// Copyright 2015 The Chromium OS Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// THIS CODE IS GENERATED - DO NOT MODIFY!
6
7#include "MemoryLib_fp.h"
8#include "EC_Ephemeral_fp.h"
9
10UINT16 EC_Ephemeral_Out_Marshal(EC_Ephemeral_Out* source,
11                                TPMI_ST_COMMAND_TAG tag,
12                                BYTE** buffer,
13                                INT32* size) {
14  UINT16 total_size = 0;
15  UINT32 parameter_size = 0;
16  BYTE* parameter_size_location;
17  INT32 parameter_size_size = sizeof(UINT32);
18  UINT32 num_response_handles = 0;
19  // Add parameter_size=0 to indicate size of the parameter area. Will be
20  // replaced later by computed parameter_size.
21  if (tag == TPM_ST_SESSIONS) {
22    parameter_size_location = *buffer;
23    // Don't add to total_size, but increment *buffer and decrement *size.
24    UINT32_Marshal(&parameter_size, buffer, size);
25  }
26  // Marshal response parameters.
27  total_size += TPM2B_ECC_POINT_Marshal(&source->Q, buffer, size);
28  total_size += UINT16_Marshal(&source->counter, buffer, size);
29  // Compute actual parameter_size. Don't add result to total_size.
30  if (tag == TPM_ST_SESSIONS) {
31    parameter_size = total_size - num_response_handles * sizeof(TPM_HANDLE);
32    UINT32_Marshal(&parameter_size, &parameter_size_location,
33                   &parameter_size_size);
34  }
35  return total_size;
36}
37
38TPM_RC EC_Ephemeral_In_Unmarshal(EC_Ephemeral_In* target,
39                                 TPM_HANDLE request_handles[],
40                                 BYTE** buffer,
41                                 INT32* size) {
42  TPM_RC result = TPM_RC_SUCCESS;
43  // Unmarshal request parameters.
44  result = TPMI_ECC_CURVE_Unmarshal(&target->curveID, buffer, size);
45  if (result != TPM_RC_SUCCESS) {
46    return result;
47  }
48  if ((result == TPM_RC_SUCCESS) && *size) {
49    result = TPM_RC_SIZE;
50  }
51  return result;
52}
53
54TPM_RC Exec_EC_Ephemeral(TPMI_ST_COMMAND_TAG tag,
55                         BYTE** request_parameter_buffer,
56                         INT32* request_parameter_buffer_size,
57                         TPM_HANDLE request_handles[],
58                         UINT32* response_handle_buffer_size,
59                         UINT32* response_parameter_buffer_size) {
60  TPM_RC result = TPM_RC_SUCCESS;
61  EC_Ephemeral_In in;
62  EC_Ephemeral_Out out;
63#ifdef TPM_CC_EC_Ephemeral
64  BYTE* response_buffer;
65  INT32 response_buffer_size;
66  UINT16 bytes_marshalled;
67  UINT16 num_response_handles = 0;
68#endif
69  *response_handle_buffer_size = 0;
70  *response_parameter_buffer_size = 0;
71  // Unmarshal request parameters to input structure.
72  result =
73      EC_Ephemeral_In_Unmarshal(&in, request_handles, request_parameter_buffer,
74                                request_parameter_buffer_size);
75  if (result != TPM_RC_SUCCESS) {
76    return result;
77  }
78  // Execute command.
79  result = TPM2_EC_Ephemeral(&in, &out);
80  if (result != TPM_RC_SUCCESS) {
81    return result;
82  }
83// Marshal output structure to global response buffer.
84#ifdef TPM_CC_EC_Ephemeral
85  response_buffer = MemoryGetResponseBuffer(TPM_CC_EC_Ephemeral) + 10;
86  response_buffer_size = MAX_RESPONSE_SIZE - 10;
87  bytes_marshalled = EC_Ephemeral_Out_Marshal(&out, tag, &response_buffer,
88                                              &response_buffer_size);
89  *response_handle_buffer_size = num_response_handles * sizeof(TPM_HANDLE);
90  *response_parameter_buffer_size =
91      bytes_marshalled - *response_handle_buffer_size;
92  return TPM_RC_SUCCESS;
93#endif
94  return TPM_RC_COMMAND_CODE;
95}
96