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ntag: Implement NTAGWrite

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This commit is contained in:
GaryOderNichts 2024-05-10 00:33:31 +02:00
parent 1c6b209692
commit 8e8431113a
4 changed files with 293 additions and 43 deletions
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119
src/Cafe/OS/libs/nfc/nfc.cpp
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@ -39,6 +39,7 @@ namespace nfc
bool hasTag;
uint32 nfcStatus;
std::chrono::time_point<std::chrono::system_clock> touchTime;
std::chrono::time_point<std::chrono::system_clock> discoveryTimeout;
MPTR tagDetectCallback;
@ -146,7 +147,8 @@ namespace nfc
// Look for the unknown TNF which contains the data we care about
for (const auto& rec : *ndefMsg)
{
if (rec.GetTNF() == ndef::Record::NDEF_TNF_UNKNOWN) {
if (rec.GetTNF() == ndef::Record::NDEF_TNF_UNKNOWN)
{
dataSize = rec.GetPayload().size();
cemu_assert(dataSize < 0x200);
memcpy(data.GetPointer(), rec.GetPayload().data(), dataSize);
@ -174,11 +176,6 @@ namespace nfc
{
result = -0xBFE;
}
// Clear tag status after read
// TODO this is not really nice here
ctx->nfcStatus &= ~NFC_STATUS_HAS_TAG;
ctx->tag = {};
}
else
{
@ -194,9 +191,42 @@ namespace nfc
ctx->state = NFC_STATE_IDLE;
// TODO write to file
sint32 result;
PPCCoreCallback(ctx->writeCallback, chan, 0, ctx->writeContext);
if (ctx->tag)
{
// Update tag NDEF data
ctx->tag->SetNDEFData(ctx->writeMessage.ToBytes());
// TODO remove this once writing is confirmed working
fs::path newPath = ctx->tagPath;
if (newPath.extension() != ".bak")
{
newPath += ".bak";
}
cemuLog_log(LogType::Force, "Saving tag as {}...", newPath.string());
// open file for writing
FileStream* fs = FileStream::createFile2(newPath);
if (!fs)
{
result = -0x2DE;
}
else
{
auto tagBytes = ctx->tag->ToBytes();
fs->writeData(tagBytes.data(), tagBytes.size());
delete fs;
result = 0;
}
}
else
{
result = -0x2DD;
}
PPCCoreCallback(ctx->writeCallback, chan, result, ctx->writeContext);
}
void __NFCHandleAbort(uint32 chan)
@ -231,6 +261,29 @@ namespace nfc
PPCCoreCallback(ctx->rawCallback, chan, result, responseSize, responseData, ctx->rawContext);
}
bool __NFCShouldHandleState(NFCContext* ctx)
{
// Always handle abort
if (ctx->state == NFC_STATE_ABORT)
{
return true;
}
// Do we have a tag?
if (ctx->nfcStatus & NFC_STATUS_HAS_TAG)
{
return true;
}
// Did the timeout expire?
if (ctx->discoveryTimeout < std::chrono::system_clock::now())
{
return true;
}
return false;
}
void NFCProc(uint32 chan)
{
cemu_assert(chan < 2);
@ -242,6 +295,11 @@ namespace nfc
return;
}
if (ctx->state == NFC_STATE_INITIALIZED)
{
ctx->state = NFC_STATE_IDLE;
}
// Check if the detect callback should be called
if (ctx->nfcStatus & NFC_STATUS_HAS_TAG)
{
@ -254,6 +312,14 @@ namespace nfc
ctx->hasTag = true;
}
// Check if the tag should be removed again
if (ctx->touchTime + std::chrono::seconds(2) < std::chrono::system_clock::now())
{
ctx->nfcStatus &= ~NFC_STATUS_HAS_TAG;
ctx->tag = {};
ctx->tagPath = "";
}
}
else
{
@ -268,33 +334,25 @@ namespace nfc
}
}
switch (ctx->state)
if (__NFCShouldHandleState(ctx))
{
case NFC_STATE_INITIALIZED:
ctx->state = NFC_STATE_IDLE;
break;
case NFC_STATE_IDLE:
break;
case NFC_STATE_READ:
// Do we have a tag or did the timeout expire?
if ((ctx->nfcStatus & NFC_STATUS_HAS_TAG) || ctx->discoveryTimeout < std::chrono::system_clock::now())
switch (ctx->state)
{
case NFC_STATE_READ:
__NFCHandleRead(chan);
}
break;
case NFC_STATE_WRITE:
__NFCHandleWrite(chan);
break;
case NFC_STATE_ABORT:
__NFCHandleAbort(chan);
break;
case NFC_STATE_RAW:
// Do we have a tag or did the timeout expire?
if ((ctx->nfcStatus & NFC_STATUS_HAS_TAG) || ctx->discoveryTimeout < std::chrono::system_clock::now())
{
break;
case NFC_STATE_WRITE:
__NFCHandleWrite(chan);
break;
case NFC_STATE_ABORT:
__NFCHandleAbort(chan);
break;
case NFC_STATE_RAW:
__NFCHandleRaw(chan);
break;
default:
break;
}
break;
}
}
@ -589,6 +647,7 @@ namespace nfc
ctx->nfcStatus |= NFC_STATUS_HAS_TAG;
ctx->tagPath = filePath;
ctx->touchTime = std::chrono::system_clock::now();
*nfcError = NFC_ERROR_NONE;
return true;