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      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 "PolicyGetDigest_fp.h"
      9 
     10 UINT16 PolicyGetDigest_Out_Marshal(PolicyGetDigest_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->policyDigest, 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 
     37 TPM_RC PolicyGetDigest_In_Unmarshal(PolicyGetDigest_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->policySession = request_handles[0];
     44   if ((result == TPM_RC_SUCCESS) && *size) {
     45     result = TPM_RC_SIZE;
     46   }
     47   return result;
     48 }
     49 
     50 TPM_RC Exec_PolicyGetDigest(TPMI_ST_COMMAND_TAG tag,
     51                             BYTE** request_parameter_buffer,
     52                             INT32* request_parameter_buffer_size,
     53                             TPM_HANDLE request_handles[],
     54                             UINT32* response_handle_buffer_size,
     55                             UINT32* response_parameter_buffer_size) {
     56   TPM_RC result = TPM_RC_SUCCESS;
     57   PolicyGetDigest_In in;
     58   PolicyGetDigest_Out out;
     59 #ifdef TPM_CC_PolicyGetDigest
     60   BYTE* response_buffer;
     61   INT32 response_buffer_size;
     62   UINT16 bytes_marshalled;
     63   UINT16 num_response_handles = 0;
     64 #endif
     65   *response_handle_buffer_size = 0;
     66   *response_parameter_buffer_size = 0;
     67   // Unmarshal request parameters to input structure.
     68   result = PolicyGetDigest_In_Unmarshal(&in, request_handles,
     69                                         request_parameter_buffer,
     70                                         request_parameter_buffer_size);
     71   if (result != TPM_RC_SUCCESS) {
     72     return result;
     73   }
     74   // Execute command.
     75   result = TPM2_PolicyGetDigest(&in, &out);
     76   if (result != TPM_RC_SUCCESS) {
     77     return result;
     78   }
     79 // Marshal output structure to global response buffer.
     80 #ifdef TPM_CC_PolicyGetDigest
     81   response_buffer = MemoryGetResponseBuffer(TPM_CC_PolicyGetDigest) + 10;
     82   response_buffer_size = MAX_RESPONSE_SIZE - 10;
     83   bytes_marshalled = PolicyGetDigest_Out_Marshal(&out, tag, &response_buffer,
     84                                                  &response_buffer_size);
     85   *response_handle_buffer_size = num_response_handles * sizeof(TPM_HANDLE);
     86   *response_parameter_buffer_size =
     87       bytes_marshalled - *response_handle_buffer_size;
     88   return TPM_RC_SUCCESS;
     89 #endif
     90   return TPM_RC_COMMAND_CODE;
     91 }
     92