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 "HMAC_fp.h"
9
10UINT16 HMAC_Out_Marshal(HMAC_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_DIGEST_Marshal(&source->outHMAC, buffer, size);
28  // Compute actual parameter_size. Don't add result to total_size.
29  if (tag == TPM_ST_SESSIONS) {
30    parameter_size = total_size - num_response_handles * sizeof(TPM_HANDLE);
31    UINT32_Marshal(&parameter_size, &parameter_size_location,
32                   &parameter_size_size);
33  }
34  return total_size;
35}
36
37TPM_RC HMAC_In_Unmarshal(HMAC_In* target,
38                         TPM_HANDLE request_handles[],
39                         BYTE** buffer,
40                         INT32* size) {
41  TPM_RC result = TPM_RC_SUCCESS;
42  // Get request handles from request_handles array.
43  target->handle = request_handles[0];
44  // Unmarshal request parameters.
45  result = TPM2B_MAX_BUFFER_Unmarshal(&target->buffer, buffer, size);
46  if (result != TPM_RC_SUCCESS) {
47    return result;
48  }
49  result = TPMI_ALG_HASH_Unmarshal(&target->hashAlg, buffer, size, TRUE);
50  if (result != TPM_RC_SUCCESS) {
51    return result;
52  }
53  if ((result == TPM_RC_SUCCESS) && *size) {
54    result = TPM_RC_SIZE;
55  }
56  return result;
57}
58
59TPM_RC Exec_HMAC(TPMI_ST_COMMAND_TAG tag,
60                 BYTE** request_parameter_buffer,
61                 INT32* request_parameter_buffer_size,
62                 TPM_HANDLE request_handles[],
63                 UINT32* response_handle_buffer_size,
64                 UINT32* response_parameter_buffer_size) {
65  TPM_RC result = TPM_RC_SUCCESS;
66  HMAC_In in;
67  HMAC_Out out;
68#ifdef TPM_CC_HMAC
69  BYTE* response_buffer;
70  INT32 response_buffer_size;
71  UINT16 bytes_marshalled;
72  UINT16 num_response_handles = 0;
73#endif
74  *response_handle_buffer_size = 0;
75  *response_parameter_buffer_size = 0;
76  // Unmarshal request parameters to input structure.
77  result = HMAC_In_Unmarshal(&in, request_handles, request_parameter_buffer,
78                             request_parameter_buffer_size);
79  if (result != TPM_RC_SUCCESS) {
80    return result;
81  }
82  // Execute command.
83  result = TPM2_HMAC(&in, &out);
84  if (result != TPM_RC_SUCCESS) {
85    return result;
86  }
87// Marshal output structure to global response buffer.
88#ifdef TPM_CC_HMAC
89  response_buffer = MemoryGetResponseBuffer(TPM_CC_HMAC) + 10;
90  response_buffer_size = MAX_RESPONSE_SIZE - 10;
91  bytes_marshalled =
92      HMAC_Out_Marshal(&out, tag, &response_buffer, &response_buffer_size);
93  *response_handle_buffer_size = num_response_handles * sizeof(TPM_HANDLE);
94  *response_parameter_buffer_size =
95      bytes_marshalled - *response_handle_buffer_size;
96  return TPM_RC_SUCCESS;
97#endif
98  return TPM_RC_COMMAND_CODE;
99}
100