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// **********************************************************************
//
// Copyright (c) 2003-2016 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Ice/Base64.h>
#include <Ice/LocalException.h>
#include <IceUtil/StringConverter.h>
#include <IceUtil/StringUtil.h>
#include <IceUtil/UniqueRef.h>
#include <iterator>
#if defined(ICE_OS_UWP)
using namespace Platform;
using namespace Windows::Security::Cryptography;
using namespace Windows::Storage::Streams;
#elif defined(_WIN32)
# include <Wincrypt.h>
#elif defined(__APPLE__)
# include <Security/Security.h>
#else
# include <openssl/bio.h>
# include <openssl/evp.h>
#endif
using namespace IceUtil;
using namespace std;
string
IceInternal::Base64::encode(const vector<unsigned char>& decoded)
{
#if defined(ICE_OS_UWP)
try
{
ArrayReference<unsigned char> data(const_cast<unsigned char*>(&decoded[0]),
static_cast<unsigned int>(decoded.size()));
auto writer = ref new DataWriter();
writer->WriteBytes(data);
return wstringToString(CryptographicBuffer::EncodeToBase64String(writer->DetachBuffer())->Data());
}
catch(Platform::Exception^ ex)
{
throw IllegalArgumentException(__FILE__, __LINE__, wstringToString(ex->Message->Data()));
}
#elif defined(_WIN32)
DWORD sz = 0;
const DWORD flags = CRYPT_STRING_BASE64 | CRYPT_STRING_NOCRLF;
if(!CryptBinaryToString(&decoded[0], static_cast<DWORD>(decoded.size()), flags, 0, &sz))
{
throw IllegalArgumentException(__FILE__, __LINE__, IceUtilInternal::lastErrorToString());
}
std::string encoded;
encoded.resize(sz - 1);
if(!CryptBinaryToString(&decoded[0], static_cast<DWORD>(decoded.size()), flags, &encoded[0], &sz))
{
throw IllegalArgumentException(__FILE__, __LINE__, IceUtilInternal::lastErrorToString());
}
return encoded;
#elif defined(__APPLE__)
CFErrorRef err = 0;
UniqueRef<SecTransformRef> encoder(SecEncodeTransformCreate(kSecBase64Encoding, &err));
if(err)
{
CFRelease(err);
throw IllegalArgumentException(__FILE__, __LINE__, "Base64 bad data");
}
CFDataRef in = CFDataCreateWithBytesNoCopy(0, &decoded[0], decoded.size(), kCFAllocatorNull);
SecTransformSetAttribute(encoder.get(), kSecTransformInputAttributeName, in, &err);
if(err)
{
CFRelease(err);
throw IllegalArgumentException(__FILE__, __LINE__, "Base64 bad data");
}
UniqueRef<CFDataRef> data(static_cast<CFDataRef>(SecTransformExecute(encoder.get(), &err)));
if(err)
{
CFRelease(err);
throw IllegalArgumentException(__FILE__, __LINE__, "Base64 bad data");
}
return string(reinterpret_cast<const char*>(CFDataGetBytePtr(data.get())), CFDataGetLength(data.get()));
#else
BIO* b64 = BIO_new(BIO_f_base64());
BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
BIO* bio = BIO_new(BIO_s_mem());
BIO_push(b64, bio);
if(BIO_write(b64, &buffer[0], buffer.size()) <= 0)
{
BIO_free_all(b64);
throw IllegalArgumentException(__FILE__, __LINE__, "Base64 bad data");
}
BIO_flush(b64);
char* data;
long size = BIO_get_mem_data(bio, &data);
string encoded(data, size);
BIO_free_all(b64);
return encoded;
#endif
}
vector<unsigned char>
IceInternal::Base64::decode(const string& encoded)
{
vector<unsigned char> decoded;
#if defined(ICE_OS_UWP)
try
{
auto reader = DataReader::FromBuffer(
CryptographicBuffer::DecodeFromBase64String(ref new String(stringToWstring(encoded).c_str())));
decoded.resize(reader->UnconsumedBufferLength);
if(!decoded.empty())
{
reader->ReadBytes(ArrayReference<unsigned char>(&decoded[0], reader->UnconsumedBufferLength));
}
}
catch(Platform::Exception^ ex)
{
throw IllegalArgumentException(__FILE__, __LINE__, wstringToString(ex->Message->Data()));
}
#elif defined(_WIN32)
DWORD sz = static_cast<DWORD>(encoded.size());
decoded.resize(sz);
if(!CryptStringToBinary(encoded.c_str(), sz, CRYPT_STRING_BASE64, &decoded[0], &sz, 0, 0))
{
throw IllegalArgumentException(__FILE__, __LINE__, IceUtilInternal::lastErrorToString());
}
decoded.resize(sz);
#elif defined(__APPLE__)
CFErrorRef err = 0;
UniqueRef<SecTransformRef> decoder(SecDecodeTransformCreate(kSecBase64Encoding, &err));
if(err)
{
CFRelease(err);
throw IllegalArgumentException(__FILE__, __LINE__, "Base64 bad data");
}
CFDataRef input = CFDataCreateWithBytesNoCopy(0, reinterpret_cast<const unsigned char*>(&encoded[0]),
encoded.size(), kCFAllocatorNull);
SecTransformSetAttribute(decoder.get(), kSecTransformInputAttributeName, input, &err);
if(err)
{
CFRelease(err);
throw IllegalArgumentException(__FILE__, __LINE__, "Base64 bad data");
}
UniqueRef<CFDataRef> data(static_cast<CFDataRef>(SecTransformExecute(decoder.get(), &err)));
if(err)
{
CFRelease(err);
throw IllegalArgumentException(__FILE__, __LINE__, "Base64 bad data");
}
vector<unsigned char> out;
decoded.resize(CFDataGetLength(data.get()));
memcpy(&decoded[0], CFDataGetBytePtr(data.get()), decoded.size());
return out;
#else
BIO* b64 = BIO_new(BIO_f_base64());
BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
BIO* bio = BIO_new_mem_buf(&encoded[0], static_cast<int>(encoded.size()));
BIO_push(b64, bio);
decoded.resize(encoded.size());
int sz = BIO_read(b64, &decoded[0], static_cast<int>(decoded.size()));
if(sz <= 0)
{
BIO_free_all(b64);
throw IllegalArgumentException(__FILE__, __LINE__, "Base64 bad data");
}
decoded.resize(sz);
BIO_free_all(b64);
#endif
return decoded;
}
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