mirror of
https://github.com/cemu-project/Cemu.git
synced 2024-12-24 00:31:52 +01:00
ntag: Implement NTAGWrite
This commit is contained in:
GaryOderNichts
parent
1c6b209692
commit
8e8431113a
@ -6,6 +6,7 @@ namespace ndef
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{
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Record::Record()
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: mFlags(0), mTNF(NDEF_TNF_EMPTY)
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{
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}
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@ -39,6 +39,7 @@ namespace nfc
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bool hasTag;
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uint32 nfcStatus;
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std::chrono::time_point<std::chrono::system_clock> touchTime;
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std::chrono::time_point<std::chrono::system_clock> discoveryTimeout;
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MPTR tagDetectCallback;
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@ -146,7 +147,8 @@ namespace nfc
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// Look for the unknown TNF which contains the data we care about
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for (const auto& rec : *ndefMsg)
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{
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if (rec.GetTNF() == ndef::Record::NDEF_TNF_UNKNOWN) {
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if (rec.GetTNF() == ndef::Record::NDEF_TNF_UNKNOWN)
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{
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dataSize = rec.GetPayload().size();
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cemu_assert(dataSize < 0x200);
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memcpy(data.GetPointer(), rec.GetPayload().data(), dataSize);
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@ -174,11 +176,6 @@ namespace nfc
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{
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result = -0xBFE;
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}
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// Clear tag status after read
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// TODO this is not really nice here
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ctx->nfcStatus &= ~NFC_STATUS_HAS_TAG;
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ctx->tag = {};
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}
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else
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{
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@ -194,9 +191,42 @@ namespace nfc
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ctx->state = NFC_STATE_IDLE;
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// TODO write to file
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sint32 result;
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PPCCoreCallback(ctx->writeCallback, chan, 0, ctx->writeContext);
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if (ctx->tag)
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{
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// Update tag NDEF data
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ctx->tag->SetNDEFData(ctx->writeMessage.ToBytes());
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// TODO remove this once writing is confirmed working
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fs::path newPath = ctx->tagPath;
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if (newPath.extension() != ".bak")
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{
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newPath += ".bak";
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}
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cemuLog_log(LogType::Force, "Saving tag as {}...", newPath.string());
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// open file for writing
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FileStream* fs = FileStream::createFile2(newPath);
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if (!fs)
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{
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result = -0x2DE;
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}
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else
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{
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auto tagBytes = ctx->tag->ToBytes();
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fs->writeData(tagBytes.data(), tagBytes.size());
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delete fs;
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result = 0;
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}
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}
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else
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{
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result = -0x2DD;
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}
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PPCCoreCallback(ctx->writeCallback, chan, result, ctx->writeContext);
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}
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void __NFCHandleAbort(uint32 chan)
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@ -231,6 +261,29 @@ namespace nfc
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PPCCoreCallback(ctx->rawCallback, chan, result, responseSize, responseData, ctx->rawContext);
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}
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bool __NFCShouldHandleState(NFCContext* ctx)
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{
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// Always handle abort
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if (ctx->state == NFC_STATE_ABORT)
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{
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return true;
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}
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// Do we have a tag?
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if (ctx->nfcStatus & NFC_STATUS_HAS_TAG)
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{
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return true;
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}
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// Did the timeout expire?
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if (ctx->discoveryTimeout < std::chrono::system_clock::now())
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{
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return true;
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}
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return false;
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}
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void NFCProc(uint32 chan)
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{
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cemu_assert(chan < 2);
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@ -242,6 +295,11 @@ namespace nfc
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return;
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}
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if (ctx->state == NFC_STATE_INITIALIZED)
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{
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ctx->state = NFC_STATE_IDLE;
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}
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// Check if the detect callback should be called
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if (ctx->nfcStatus & NFC_STATUS_HAS_TAG)
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{
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@ -254,6 +312,14 @@ namespace nfc
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ctx->hasTag = true;
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}
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// Check if the tag should be removed again
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if (ctx->touchTime + std::chrono::seconds(2) < std::chrono::system_clock::now())
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{
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ctx->nfcStatus &= ~NFC_STATUS_HAS_TAG;
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ctx->tag = {};
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ctx->tagPath = "";
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}
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}
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else
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{
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@ -268,33 +334,25 @@ namespace nfc
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}
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}
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switch (ctx->state)
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if (__NFCShouldHandleState(ctx))
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{
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case NFC_STATE_INITIALIZED:
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ctx->state = NFC_STATE_IDLE;
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break;
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case NFC_STATE_IDLE:
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break;
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case NFC_STATE_READ:
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// Do we have a tag or did the timeout expire?
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if ((ctx->nfcStatus & NFC_STATUS_HAS_TAG) || ctx->discoveryTimeout < std::chrono::system_clock::now())
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switch (ctx->state)
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{
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case NFC_STATE_READ:
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__NFCHandleRead(chan);
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}
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break;
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case NFC_STATE_WRITE:
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__NFCHandleWrite(chan);
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break;
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case NFC_STATE_ABORT:
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__NFCHandleAbort(chan);
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break;
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case NFC_STATE_RAW:
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// Do we have a tag or did the timeout expire?
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if ((ctx->nfcStatus & NFC_STATUS_HAS_TAG) || ctx->discoveryTimeout < std::chrono::system_clock::now())
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{
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break;
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case NFC_STATE_WRITE:
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__NFCHandleWrite(chan);
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break;
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case NFC_STATE_ABORT:
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__NFCHandleAbort(chan);
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break;
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case NFC_STATE_RAW:
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__NFCHandleRaw(chan);
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break;
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default:
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break;
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}
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break;
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}
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}
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@ -589,6 +647,7 @@ namespace nfc
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ctx->nfcStatus |= NFC_STATUS_HAS_TAG;
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ctx->tagPath = filePath;
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ctx->touchTime = std::chrono::system_clock::now();
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*nfcError = NFC_ERROR_NONE;
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return true;
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@ -9,7 +9,10 @@ namespace ntag
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{
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struct NTAGWriteData
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{
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uint16 size;
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uint8 data[0x1C8];
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nfc::NFCUid uid;
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nfc::NFCUid uidMask;
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};
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NTAGWriteData gWriteData[2];
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@ -72,7 +75,7 @@ namespace ntag
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{
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gFormatSettings.version = formatSettings->version;
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gFormatSettings.makerCode = _swapEndianU32(formatSettings->makerCode);
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gFormatSettings.indentifyCode = _swapEndianU32(formatSettings->indentifyCode);
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gFormatSettings.identifyCode = _swapEndianU32(formatSettings->identifyCode);
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}
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void __NTAGDetectCallback(PPCInterpreter_t* hCPU)
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@ -220,7 +223,7 @@ namespace ntag
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return true;
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}
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sint32 __NTAGDecryptData(void* decryptedData, void* rawData)
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sint32 __NTAGDecryptData(void* decryptedData, const void* rawData)
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{
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StackAllocator<iosu::ccr_nfc::CCRNFCCryptData> nfcRawData, nfcInData, nfcOutData;
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@ -256,7 +259,41 @@ namespace ntag
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sint32 __NTAGValidateHeaders(NTAGNoftHeader* noftHeader, NTAGInfoHeader* infoHeader, NTAGAreaHeader* rwHeader, NTAGAreaHeader* roHeader)
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{
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// TODO
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if (infoHeader->formatVersion != gFormatSettings.version || noftHeader->version != 0x1)
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{
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cemuLog_log(LogType::Force, "Invalid format version");
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return -0x2710;
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}
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if (_swapEndianU32(noftHeader->magic) != 0x4E4F4654 /* 'NOFT' */ ||
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_swapEndianU16(rwHeader->magic) != 0x5257 /* 'RW' */ ||
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_swapEndianU16(roHeader->magic) != 0x524F /* 'RO' */)
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{
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cemuLog_log(LogType::Force, "Invalid header magic");
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return -0x270F;
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}
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if (_swapEndianU32(rwHeader->makerCode) != gFormatSettings.makerCode ||
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_swapEndianU32(roHeader->makerCode) != gFormatSettings.makerCode)
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{
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cemuLog_log(LogType::Force, "Invalid maker code");
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return -0x270E;
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}
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if (infoHeader->formatVersion != 0 &&
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(_swapEndianU32(rwHeader->identifyCode) != gFormatSettings.identifyCode ||
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_swapEndianU32(roHeader->identifyCode) != gFormatSettings.identifyCode))
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{
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cemuLog_log(LogType::Force, "Invalid identify code");
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return -0x2709;
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}
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if (_swapEndianU16(rwHeader->size) + _swapEndianU16(roHeader->size) != 0x130)
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{
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cemuLog_log(LogType::Force, "Invalid data size");
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return -0x270D;
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}
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return 0;
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}
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@ -264,8 +301,13 @@ namespace ntag
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{
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memcpy(noftHeader, data + 0x20, sizeof(NTAGNoftHeader));
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memcpy(infoHeader, data + 0x198, sizeof(NTAGInfoHeader));
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cemu_assert(_swapEndianU16(infoHeader->rwHeaderOffset) + sizeof(NTAGAreaHeader) < 0x200);
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cemu_assert(_swapEndianU16(infoHeader->roHeaderOffset) + sizeof(NTAGAreaHeader) < 0x200);
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memcpy(rwHeader, data + _swapEndianU16(infoHeader->rwHeaderOffset), sizeof(NTAGAreaHeader));
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memcpy(roHeader, data + _swapEndianU16(infoHeader->roHeaderOffset), sizeof(NTAGAreaHeader));
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return __NTAGValidateHeaders(noftHeader, infoHeader, rwHeader, roHeader);
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}
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@ -317,7 +359,7 @@ namespace ntag
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ppcDefineParamPtr(lockedData, void, 7);
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ppcDefineParamPtr(context, void, 8);
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uint8 rawData[0x1C8];
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uint8 rawData[0x1C8]{};
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StackAllocator<NTAGData> readResult;
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StackAllocator<uint8, 0x1C8> rwData;
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StackAllocator<uint8, 0x1C8> roData;
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@ -331,6 +373,9 @@ namespace ntag
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error = __NTAGConvertNFCError(error);
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if (error == 0)
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{
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memset(rwData.GetPointer(), 0, 0x1C8);
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memset(roData.GetPointer(), 0, 0x1C8);
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// Copy raw and locked data into a contigous buffer
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memcpy(rawData, data, dataSize);
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memcpy(rawData + dataSize, lockedData, lockedDataSize);
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@ -388,28 +433,173 @@ namespace ntag
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return __NTAGConvertNFCError(result);
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}
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sint32 __NTAGEncryptData(void* encryptedData, const void* rawData)
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{
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StackAllocator<iosu::ccr_nfc::CCRNFCCryptData> nfcRawData, nfcInData, nfcOutData;
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if (!ccrNfcOpened)
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{
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gCcrNfcHandle = coreinit::IOS_Open("/dev/ccr_nfc", 0);
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}
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// Prepare nfc buffer
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nfcRawData->version = 0;
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memcpy(nfcRawData->data, rawData, 0x1C8);
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__NTAGRawDataToNfcData(nfcRawData.GetPointer(), nfcInData.GetPointer());
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// Encrypt
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sint32 result = coreinit::IOS_Ioctl(gCcrNfcHandle, 1, nfcInData.GetPointer(), sizeof(iosu::ccr_nfc::CCRNFCCryptData), nfcOutData.GetPointer(), sizeof(iosu::ccr_nfc::CCRNFCCryptData));
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// Unpack nfc buffer
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__NTAGNfcDataToRawData(nfcOutData.GetPointer(), nfcRawData.GetPointer());
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memcpy(encryptedData, nfcRawData->data, 0x1C8);
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return result;
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}
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sint32 __NTAGPrepareWriteData(void* outBuffer, uint32 dataSize, const void* data, const void* tagData, NTAGNoftHeader* noftHeader, NTAGAreaHeader* rwHeader)
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{
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uint8 decryptedBuffer[0x1C8];
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uint8 encryptedBuffer[0x1C8];
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memcpy(decryptedBuffer, tagData, 0x1C8);
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// Fill the rest of the rw area with random data
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if (dataSize < _swapEndianU16(rwHeader->size))
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{
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uint8 randomBuffer[0x1C8];
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for (int i = 0; i < sizeof(randomBuffer); i++)
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{
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randomBuffer[i] = rand() & 0xFF;
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}
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memcpy(decryptedBuffer + _swapEndianU16(rwHeader->offset) + dataSize, randomBuffer, _swapEndianU16(rwHeader->size) - dataSize);
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}
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// Make sure the data fits into the rw area
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if (_swapEndianU16(rwHeader->size) < dataSize)
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{
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return -0x270D;
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}
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// Update write count (check for overflow)
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if ((_swapEndianU16(noftHeader->writeCount) & 0x7fff) == 0x7fff)
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{
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noftHeader->writeCount = _swapEndianU16(_swapEndianU16(noftHeader->writeCount) & 0x8000);
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}
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else
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{
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noftHeader->writeCount = _swapEndianU16(_swapEndianU16(noftHeader->writeCount) + 1);
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}
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memcpy(decryptedBuffer + 0x20, noftHeader, sizeof(noftHeader));
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memcpy(decryptedBuffer + _swapEndianU16(rwHeader->offset), data, dataSize);
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// Encrypt
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sint32 result = __NTAGEncryptData(encryptedBuffer, decryptedBuffer);
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if (result < 0)
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{
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return result;
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}
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memcpy(outBuffer, encryptedBuffer, _swapEndianU16(rwHeader->size) + 0x28);
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return 0;
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}
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void __NTAGWriteCallback(PPCInterpreter_t* hCPU)
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{
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ppcDefineParamU32(chan, 0);
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ppcDefineParamS32(error, 1);
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ppcDefineParamPtr(context, void, 2);
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PPCCoreCallback(gWriteCallbacks[chan], chan, __NTAGConvertNFCError(error), context);
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osLib_returnFromFunction(hCPU, 0);
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}
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void __NTAGReadBeforeWriteCallback(PPCInterpreter_t* hCPU)
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{
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ppcDefineParamU32(chan, 0);
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ppcDefineParamS32(error, 1);
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ppcDefineParamPtr(uid, nfc::NFCUid, 2);
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ppcDefineParamU32(readOnly, 3);
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ppcDefineParamU32(dataSize, 4);
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ppcDefineParamPtr(data, void, 5);
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ppcDefineParamU32(lockedDataSize, 6);
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ppcDefineParamPtr(lockedData, void, 7);
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ppcDefineParamPtr(context, void, 8);
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uint8 rawData[0x1C8]{};
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uint8 rwData[0x1C8]{};
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uint8 roData[0x1C8]{};
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NTAGNoftHeader noftHeader;
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NTAGInfoHeader infoHeader;
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NTAGAreaHeader rwHeader;
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NTAGAreaHeader roHeader;
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uint8 writeBuffer[0x1C8]{};
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error = __NTAGConvertNFCError(error);
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if (error == 0)
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{
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// Copy raw and locked data into a contigous buffer
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memcpy(rawData, data, dataSize);
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memcpy(rawData + dataSize, lockedData, lockedDataSize);
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error = __NTAGParseData(rawData, rwData, roData, uid, lockedDataSize, &noftHeader, &infoHeader, &rwHeader, &roHeader);
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if (error < 0)
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{
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cemuLog_log(LogType::Force, "Failed to parse data before write");
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PPCCoreCallback(gWriteCallbacks[chan], chan, -0x3E3, context);
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osLib_returnFromFunction(hCPU, 0);
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return;
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}
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// Prepare data
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memcpy(rawData + _swapEndianU16(infoHeader.rwHeaderOffset), &rwHeader, sizeof(rwHeader));
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memcpy(rawData + _swapEndianU16(infoHeader.roHeaderOffset), &roHeader, sizeof(roHeader));
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memcpy(rawData + _swapEndianU16(roHeader.offset), roData, _swapEndianU16(roHeader.size));
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error = __NTAGPrepareWriteData(writeBuffer, gWriteData[chan].size, gWriteData[chan].data, rawData, &noftHeader, &rwHeader);
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if (error < 0)
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{
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cemuLog_log(LogType::Force, "Failed to prepare write data");
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PPCCoreCallback(gWriteCallbacks[chan], chan, -0x3E3, context);
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osLib_returnFromFunction(hCPU, 0);
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return;
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}
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// Write data to tag
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error = nfc::NFCWrite(chan, 200, &gWriteData[chan].uid, &gWriteData[chan].uidMask,
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_swapEndianU16(rwHeader.size) + 0x28, writeBuffer, RPLLoader_MakePPCCallable(__NTAGWriteCallback), context);
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if (error >= 0)
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{
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osLib_returnFromFunction(hCPU, 0);
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return;
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}
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error = __NTAGConvertNFCError(error);
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}
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PPCCoreCallback(gWriteCallbacks[chan], chan, error, context);
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osLib_returnFromFunction(hCPU, 0);
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}
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sint32 NTAGWrite(uint32 chan, uint32 timeout, nfc::NFCUid* uid, uint32 rwSize, void* rwData, MPTR callback, void* context)
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{
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cemu_assert(chan < 2);
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cemu_assert(rwSize < 0x1C8);
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gWriteCallbacks[chan] = callback;
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nfc::NFCUid _uid{}, _uidMask{};
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if (uid)
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{
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memcpy(&_uid, uid, sizeof(*uid));
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memcpy(&gWriteData[chan].uid, uid, sizeof(nfc::NFCUid));
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}
|
||||
memset(_uidMask.uid, 0xff, sizeof(_uidMask.uid));
|
||||
memset(&gWriteData[chan].uidMask, 0xff, sizeof(nfc::NFCUid));
|
||||
|
||||
// TODO save write data
|
||||
gWriteData[chan].size = rwSize;
|
||||
memcpy(gWriteData[chan].data, rwData, rwSize);
|
||||
|
||||
// TODO we probably don't need to read first here
|
||||
sint32 result = nfc::NFCRead(chan, timeout, &_uid, &_uidMask, RPLLoader_MakePPCCallable(__NTAGReadBeforeWriteCallback), context);
|
||||
sint32 result = nfc::NFCRead(chan, timeout, &gWriteData[chan].uid, &gWriteData[chan].uidMask, RPLLoader_MakePPCCallable(__NTAGReadBeforeWriteCallback), context);
|
||||
return __NTAGConvertNFCError(result);
|
||||
}
|
||||
|
||||
@ -418,7 +608,7 @@ namespace ntag
|
||||
cemu_assert(chan < 2);
|
||||
|
||||
// TODO
|
||||
return 0;
|
||||
return -1;
|
||||
}
|
||||
|
||||
void Initialize()
|
||||
|
||||
@ -7,7 +7,7 @@ namespace ntag
|
||||
{
|
||||
/* +0x00 */ uint8 version;
|
||||
/* +0x04 */ uint32 makerCode;
|
||||
/* +0x08 */ uint32 indentifyCode;
|
||||
/* +0x08 */ uint32 identifyCode;
|
||||
/* +0x0C */ uint8 reserved[0x1C];
|
||||
};
|
||||
static_assert(sizeof(NTAGFormatSettings) == 0x28);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user