| //**********************************************************************; |
| // Copyright (c) 2015, 2016 Intel Corporation |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are met: |
| // |
| // 1. Redistributions of source code must retain the above copyright notice, |
| // this list of conditions and the following disclaimer. |
| // |
| // 2. Redistributions in binary form must reproduce the above copyright notice, |
| // this list of conditions and the following disclaimer in the documentation |
| // and/or other materials provided with the distribution. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| // THE POSSIBILITY OF SUCH DAMAGE. |
| //**********************************************************************; |
| |
| #include <sapi/tpm20.h> |
| #include "sysapi_util.h" |
| |
| |
| TSS2_RC CheckOverflow( UINT8 *buffer, UINT32 bufferSize, UINT8 *nextData, UINT32 size ) |
| { |
| TSS2_RC rval = TSS2_RC_SUCCESS; |
| INT64 usedSize; |
| |
| usedSize = (INT64)(nextData - buffer) + size; |
| if( usedSize > (INT64)bufferSize ) |
| { |
| rval = TSS2_SYS_RC_INSUFFICIENT_CONTEXT; |
| } |
| |
| return( rval ); |
| } |
| /** |
| * The buffer and nextData parameters track the front of the output command |
| * buffer and the next location where data is to be written in said buffer |
| * respectively. In the marshal_* functions depend on these two pointers |
| * being in a relatively sane order. Specifically neither should be NULL, |
| * and buffer must be less than nextData. |
| */ |
| TSS2_RC CheckDataPointers( UINT8 *buffer, UINT8 **nextData ) |
| { |
| if( buffer == NULL || nextData == NULL || *nextData == NULL \ |
| || *nextData < buffer ) |
| { |
| return TSS2_SYS_RC_BAD_REFERENCE; |
| } |
| |
| return TSS2_RC_SUCCESS; |
| } |