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service/cecd: Utilize CryptoPP::Base64Encoder for message id

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This commit is contained in:
NarcolepticK 2018-09-07 23:09:14 -04:00
parent ff1beca74a
commit 648cecf1aa
3 changed files with 21 additions and 28 deletions
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1
externals/cryptopp/CMakeLists.txt vendored
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@ -131,6 +131,7 @@ set(cryptopp_SOURCES
cryptopp/algparam.cpp
cryptopp/asn.cpp
cryptopp/authenc.cpp
cryptopp/base64.cpp
cryptopp/basecode.cpp
cryptopp/ccm.cpp
cryptopp/crc-simd.cpp

46
src/core/hle/service/cecd/cecd.cpp
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@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cryptopp/base64.h>
#include "common/file_util.h"
#include "common/logging/log.h"
#include "common/string_util.h"
@ -691,30 +692,23 @@ void Module::Interface::OpenAndRead(Kernel::HLERequestContext& ctx) {
open_mode.check);
}
std::string Module::EncodeBase64(const std::vector<u8>& in, const std::string& dictionary) const {
std::string Module::EncodeBase64(const std::vector<u8>& in) const {
using namespace CryptoPP;
using Name::EncodingLookupArray;
using Name::InsertLineBreaks;
using Name::Pad;
std::string out;
out.reserve((in.size() * 4) / 3);
int b;
for (int i = 0; i < in.size(); i += 3) {
b = (in[i] & 0xFC) >> 2;
out += dictionary[b];
b = (in[i] & 0x03) << 4;
if (i + 1 < in.size()) {
b |= (in[i + 1] & 0xF0) >> 4;
out += dictionary[b];
b = (in[i + 1] & 0x0F) << 2;
if (i + 2 < in.size()) {
b |= (in[i + 2] & 0xC0) >> 6;
out += dictionary[b];
b = in[i + 2] & 0x3F;
out += dictionary[b];
} else {
out += dictionary[b];
}
} else {
out += dictionary[b];
}
}
Base64Encoder encoder;
AlgorithmParameters params =
MakeParameters(EncodingLookupArray(), (const byte*)base64_dict.data())(InsertLineBreaks(),
false)(Pad(), false);
encoder.IsolatedInitialize(params);
encoder.Attach(new StringSink(out));
encoder.Put(in.data(), in.size());
encoder.MessageEnd();
return out;
}
@ -732,11 +726,9 @@ std::string Module::GetCecDataPathTypeAsString(const CecDataPathType type, const
case CecDataPathType::OutboxIndex:
return fmt::format("/CEC/{:08x}/OutBox__/OBIndex_____", program_id);
case CecDataPathType::InboxMsg:
return fmt::format("/CEC/{:08x}/InBox___/_{}", program_id,
EncodeBase64(msg_id, base64_dict));
return fmt::format("/CEC/{:08x}/InBox___/_{}", program_id, EncodeBase64(msg_id));
case CecDataPathType::OutboxMsg:
return fmt::format("/CEC/{:08x}/OutBox__/_{}", program_id,
EncodeBase64(msg_id, base64_dict));
return fmt::format("/CEC/{:08x}/OutBox__/_{}", program_id, EncodeBase64(msg_id));
case CecDataPathType::RootDir:
return "/CEC";
case CecDataPathType::MboxDir:

2
src/core/hle/service/cecd/cecd.h
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@ -589,7 +589,7 @@ private:
0x26, 0x00, 0x01, 0x00};
/// Encoding function used for the message id
std::string EncodeBase64(const std::vector<u8>& in, const std::string& dictionary) const;
std::string EncodeBase64(const std::vector<u8>& in) const;
std::string GetCecDataPathTypeAsString(const CecDataPathType type, const u32 program_id,
const std::vector<u8>& msg_id = std::vector<u8>()) const;