fseek(m_pFP, 0, SEEK_END);
m_OriginEndOffset = ftell(m_pFP);
+ if (m_OriginEndOffset < m_PlaintextStartOffset) {
+ DRM_TAPPS_EXCEPTION("Invalid file offset... offset is bigger than file size");
+ return TADC_FILE_OPEN_ERROR;
+ }
m_plaintextSize = m_OriginEndOffset - m_PlaintextStartOffset;
if (m_plaintextSize != t_DRMHeader.PlaintextSize) {
}
fseek(hFile1, 0, SEEK_END);
- auto size1 = ftell(hFile1);
+ auto size1 = static_cast<long long>(ftell(hFile1));
auto offset = t_FileHeader.Offset1 + 35 + t_DRMHeader.XmlSize;
fseek(hFile1, offset, SEEK_SET);
+ if (size1 < offset) {
+ DRM_TAPPS_EXCEPTION("Invalid offset... offset is bigger than file size");
+ fclose(hFile1);
+ fclose(hFile2);
+ TADC_MEMFree_FileHeader(&t_FileHeader);
+ TADC_MEMFree_DRMHeader(&t_DRMHeader);
+ TADC_MEMFree_RO(&t_RO);
+ TADC_IF_Free(pReadBuf);
+ return FALSE;
+ }
+
auto size2 = size1 - offset; //plain file size
auto BlockCnt = (size2 / 512) + ((size2 % 512) ? 1 : 0);
}
fseek(hFile1, 0, SEEK_END);
- auto size1 = ftell(hFile1);
+ auto size1 = static_cast<long long>(ftell(hFile1));
auto offset = t_FileHeader.Offset1 + 35 + t_DRMHeader.XmlSize;
fseek(hFile1, offset, SEEK_SET );
+ if (size1 < offset) {
+ DRM_TAPPS_EXCEPTION("Invalid offset... offset is bigger than file size");
+ fclose(hFile1);
+ fclose(hFile2);
+ TADC_MEMFree_FileHeader(&t_FileHeader);
+ TADC_MEMFree_DRMHeader(&t_DRMHeader);
+ TADC_IF_Free(pReadBuf);
+ return FALSE;
+ }
+
auto size2 = size1 - offset; //plain file size
auto BlockCnt = (size2 / 512) + ((size2 % 512) ? 1 : 0);
* limitations under the License.
*/
+#include <climits>
+
#include "CXMLFile.h"
#include "TADC_IF.h"
#include "TADC_ErrorCode.h"
dwFileSize = ftell(hFile);
fseek(hFile, 0, SEEK_SET);
+ if (dwFileSize > LONG_MAX - 256) {
+ nResult = -1;
+ goto finish;
+ }
pbBuffer = new BYTE[ dwFileSize + 1 ];
IF_TRUE_GOTO( pbBuffer == NULL, TADC_MEMAlOC_ERROR );
int DrmDecryptBlocks(void);
long long GetCurBlockIndex(void);
- unsigned char *m_pFilePath;
- unsigned char *m_pCID;
- unsigned char *m_pCEK;
- unsigned char *m_pDecBuf;
-
- int m_PlaintextStartOffset;
- FILE *m_pFP;
-
- long m_encryptionLevel;
- long long m_encryptionRange;
- long long m_plaintextSize;
- long long m_OriginEndOffset;
- long long m_OriginCurOffset;
- long long m_DrmCurOffset;
- long long m_DrmEndOffset;
- long long m_blockCnt;
- long long m_curBlockIndex;
- long long m_decReadlen;
- long long m_extraReadlen;
+ unsigned char *m_pFilePath = nullptr;
+ unsigned char *m_pCID = nullptr;
+ unsigned char *m_pCEK = nullptr;
+ unsigned char *m_pDecBuf = nullptr;
+
+ int m_PlaintextStartOffset = 0;
+ FILE *m_pFP = nullptr;
+
+ long m_encryptionLevel = 0;
+ long long m_encryptionRange = 0;
+ long long m_plaintextSize = 0;
+ long long m_OriginEndOffset = 0;
+ long long m_OriginCurOffset = 0;
+ long long m_DrmCurOffset = 0;
+ long long m_DrmEndOffset = 0;
+ long long m_blockCnt = 0;
+ long long m_curBlockIndex = 0;
+ long long m_decReadlen = 0;
+ long long m_extraReadlen = 0;
};