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@ -62,6 +62,9 @@ static const int kFileStartOffset = kMagicStringLen + sizeof(uint32_t);
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static const int kMaxBufferedFileSize = 10*1024; |
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const char plSecureStream::kKeyFilename[] = "encryption.key"; |
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const wchar_t plSecureStream::kWKeyFilename[] = L"encryption.key"; |
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plSecureStream::plSecureStream(bool deleteOnExit, uint32_t* key) : |
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fRef(INVALID_HANDLE_VALUE), |
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fActualFileSize(0), |
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@ -757,3 +760,61 @@ hsStream* plSecureStream::OpenSecureFileWrite(const wchar_t* fileName, uint32_t*
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s->Open(fileName, L"wb"); |
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return s; |
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} |
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//// GetSecureEncryptionKey //////////////////////////////////////////////////
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bool plSecureStream::GetSecureEncryptionKey(const char* filename, uint32_t* key, unsigned length) |
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{ |
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wchar_t* wFilename = hsStringToWString(filename); |
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bool ret = GetSecureEncryptionKey(wFilename, key, length); |
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delete [] wFilename; |
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return ret; |
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} |
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bool plSecureStream::GetSecureEncryptionKey(const wchar_t* filename, uint32_t* key, unsigned length) |
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{ |
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// looks for an encryption key file in the same directory, and reads it
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std::wstring sFilename = filename; |
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// grab parent directory
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size_t loc = sFilename.rfind(L"\\"); |
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if (loc == std::wstring::npos) |
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loc = sFilename.rfind(L"/"); |
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std::wstring sDir; |
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if (loc != std::wstring::npos) |
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sDir = sFilename.substr(0, loc); |
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else // no directory
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sDir = L"./"; |
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if ((sDir[sDir.length()-1] != L'/') && (sDir[sDir.length()-1] != L'\\')) |
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sDir += L'/'; // add the slash, if it doesn't has one
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// now add the key filename
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std::wstring keyFile = sDir + kWKeyFilename; |
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if (plFileUtils::FileExists(keyFile.c_str())) |
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{ |
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// file exists, read from it
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hsUNIXStream file; |
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file.Open(keyFile.c_str(), L"rb"); |
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unsigned bytesToRead = length * sizeof(uint32_t); |
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uint8_t* buffer = (uint8_t*)malloc(bytesToRead); |
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unsigned bytesRead = file.Read(bytesToRead, buffer); |
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file.Close(); |
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unsigned memSize = min(bytesToRead, bytesRead); |
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memcpy(key, buffer, memSize); |
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free(buffer); |
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return true; |
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} |
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// file doesn't exist, use default key
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unsigned memSize = min(length, arrsize(plSecureStream::kDefaultKey)); |
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memSize *= sizeof(uint32_t); |
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memcpy(key, plSecureStream::kDefaultKey, memSize); |
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return false; |
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} |
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