1 files changed, 296 insertions, 0 deletions

diff --git a/libpit/source/libpit.cpp b/libpit/source/libpit.cpp
new file mode 100644
index 0000000..73bc1b8
--- /dev/null
+++ b/libpit/source/libpit.cpp
@@ -0,0 +1,296 @@
+/* Copyright (c) 2010-2014 Benjamin Dobell, Glass Echidna
+ 
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+ 
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+ 
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.*/
+
+// libpit
+#include "libpit.h"
+
+using namespace libpit;
+
+PitEntry::PitEntry()
+{
+	binaryType = false;
+	deviceType = 0;
+	identifier = 0;
+	attributes = 0;
+	updateAttributes = 0;
+	blockSizeOrOffset = 0;
+	blockCount = 0;
+	fileOffset = 0;
+	fileSize = 0;
+
+	memset(partitionName, 0, PitEntry::kPartitionNameMaxLength);
+	memset(flashFilename, 0, PitEntry::kFlashFilenameMaxLength);
+	memset(fotaFilename, 0, PitEntry::kFotaFilenameMaxLength);
+}
+
+PitEntry::~PitEntry()
+{
+}
+
+bool PitEntry::Matches(const PitEntry *otherPitEntry) const
+{
+	if (binaryType == otherPitEntry->binaryType && deviceType == otherPitEntry->deviceType && identifier == otherPitEntry->identifier
+		&& attributes == otherPitEntry->attributes && updateAttributes == otherPitEntry->updateAttributes && blockSizeOrOffset == otherPitEntry->blockSizeOrOffset
+		&& blockCount == otherPitEntry->blockCount && fileOffset == otherPitEntry->fileOffset && fileSize == otherPitEntry->fileSize
+		&& strcmp(partitionName, otherPitEntry->partitionName) == 0 && strcmp(flashFilename, otherPitEntry->flashFilename) == 0
+		&& strcmp(fotaFilename, otherPitEntry->fotaFilename) == 0)
+	{
+		return (true);
+	}
+	else
+	{
+		return (false);
+	}
+}
+
+
+
+PitData::PitData()
+{
+	entryCount = 0;
+
+	unknown1 = 0;
+	unknown2 = 0;
+
+	unknown3 = 0;
+	unknown4 = 0;
+
+	unknown5 = 0;
+	unknown6 = 0;
+
+	unknown7 = 0;
+	unknown8 = 0;
+}
+
+PitData::~PitData()
+{
+	for (unsigned int i = 0; i < entries.size(); i++)
+		delete entries[i];
+}
+
+bool PitData::Unpack(const unsigned char *data)
+{
+	if (PitData::UnpackInteger(data, 0) != PitData::kFileIdentifier)
+		return (false);
+
+	// Remove existing entries
+	for (unsigned int i = 0; i < entries.size(); i++)
+		delete entries[i];
+
+	entryCount = PitData::UnpackInteger(data, 4);
+
+	entries.resize(entryCount);
+
+	unknown1 = PitData::UnpackInteger(data, 8);
+	unknown2 = PitData::UnpackInteger(data, 12);
+
+	unknown3 = PitData::UnpackShort(data, 16);
+	unknown4 = PitData::UnpackShort(data, 18);
+
+	unknown5 = PitData::UnpackShort(data, 20);
+	unknown6 = PitData::UnpackShort(data, 22);
+
+	unknown7 = PitData::UnpackShort(data, 24);
+	unknown8 = PitData::UnpackShort(data, 26);
+
+	unsigned int integerValue;
+	unsigned int entryOffset;
+
+	for (unsigned int i = 0; i < entryCount; i++)
+	{
+		entryOffset = PitData::kHeaderDataSize + i * PitEntry::kDataSize;
+
+		entries[i] = new PitEntry();
+
+		integerValue = PitData::UnpackInteger(data, entryOffset);
+		entries[i]->SetBinaryType(integerValue);
+
+		integerValue = PitData::UnpackInteger(data, entryOffset + 4);
+		entries[i]->SetDeviceType(integerValue);
+
+		integerValue = PitData::UnpackInteger(data, entryOffset + 8);
+		entries[i]->SetIdentifier(integerValue);
+
+		integerValue = PitData::UnpackInteger(data, entryOffset + 12);
+		entries[i]->SetAttributes(integerValue);
+
+		integerValue = PitData::UnpackInteger(data, entryOffset + 16);
+		entries[i]->SetUpdateAttributes(integerValue);
+
+		integerValue = PitData::UnpackInteger(data, entryOffset + 20);
+		entries[i]->SetBlockSizeOrOffset(integerValue);
+
+		integerValue = PitData::UnpackInteger(data, entryOffset + 24);
+		entries[i]->SetBlockCount(integerValue);
+
+		integerValue = PitData::UnpackInteger(data, entryOffset + 28);
+		entries[i]->SetFileOffset(integerValue);
+
+		integerValue = PitData::UnpackInteger(data, entryOffset + 32);
+		entries[i]->SetFileSize(integerValue);
+
+		entries[i]->SetPartitionName((const char *)data + entryOffset + 36);
+		entries[i]->SetFlashFilename((const char *)data + entryOffset + 36 + PitEntry::kPartitionNameMaxLength);
+		entries[i]->SetFotaFilename((const char *)data + entryOffset + 36 + PitEntry::kPartitionNameMaxLength + PitEntry::kFlashFilenameMaxLength);
+	}
+
+	return (true);
+}
+
+void PitData::Pack(unsigned char *data) const
+{
+	PitData::PackInteger(data, 0, PitData::kFileIdentifier);
+
+	PitData::PackInteger(data, 4, entryCount);
+
+	PitData::PackInteger(data, 8, unknown1);
+	PitData::PackInteger(data, 12, unknown2);
+
+	PitData::PackShort(data, 16, unknown3);
+	PitData::PackShort(data, 18, unknown4);
+
+	PitData::PackShort(data, 20, unknown5);
+	PitData::PackShort(data, 22, unknown6);
+
+	PitData::PackShort(data, 24, unknown7);
+	PitData::PackShort(data, 26, unknown8);
+
+	int entryOffset;
+
+	for (unsigned int i = 0; i < entryCount; i++)
+	{
+		entryOffset = PitData::kHeaderDataSize + i * PitEntry::kDataSize;
+
+		PitData::PackInteger(data, entryOffset, entries[i]->GetBinaryType());
+
+		PitData::PackInteger(data, entryOffset + 4, entries[i]->GetDeviceType());
+		PitData::PackInteger(data, entryOffset + 8, entries[i]->GetIdentifier());
+		PitData::PackInteger(data, entryOffset + 12, entries[i]->GetAttributes());
+
+		PitData::PackInteger(data, entryOffset + 16, entries[i]->GetUpdateAttributes());
+
+		PitData::PackInteger(data, entryOffset + 20, entries[i]->GetBlockSizeOrOffset());
+		PitData::PackInteger(data, entryOffset + 24, entries[i]->GetBlockCount());
+
+		PitData::PackInteger(data, entryOffset + 28, entries[i]->GetFileOffset());
+		PitData::PackInteger(data, entryOffset + 32, entries[i]->GetFileSize());
+
+		memcpy(data + entryOffset + 36, entries[i]->GetPartitionName(), PitEntry::kPartitionNameMaxLength);
+		memcpy(data + entryOffset + 36 + PitEntry::kPartitionNameMaxLength, entries[i]->GetFlashFilename(), PitEntry::kFlashFilenameMaxLength);
+		memcpy(data + entryOffset + 36 + PitEntry::kPartitionNameMaxLength + PitEntry::kFlashFilenameMaxLength,
+			entries[i]->GetFotaFilename(), PitEntry::kFotaFilenameMaxLength);
+	}
+}
+
+bool PitData::Matches(const PitData *otherPitData) const
+{
+	if (entryCount == otherPitData->entryCount && unknown1 == otherPitData->unknown1 && unknown2 == otherPitData->unknown2
+		&& unknown3 == otherPitData->unknown3 && unknown4 == otherPitData->unknown4 && unknown5 == otherPitData->unknown5
+		&& unknown6 == otherPitData->unknown6 && unknown7 == otherPitData->unknown7 && unknown8 == otherPitData->unknown8)
+	{
+		for (unsigned int i = 0; i < entryCount; i++)
+		{
+			if (!entries[i]->Matches(otherPitData->entries[i]))
+				return (false);
+		}
+
+		return (true);
+	}
+	else
+	{
+		return (false);
+	}
+}
+
+void PitData::Clear(void)
+{
+	entryCount = 0;
+
+	unknown1 = 0;
+	unknown2 = 0;
+
+	unknown3 = 0;
+	unknown4 = 0;
+
+	unknown5 = 0;
+	unknown6 = 0;
+
+	unknown7 = 0;
+	unknown8 = 0;
+
+	for (unsigned int i = 0; i < entries.size(); i++)
+		delete entries[i];
+
+	entries.clear();
+}
+
+PitEntry *PitData::GetEntry(unsigned int index)
+{
+	return (entries[index]);
+}
+
+const PitEntry *PitData::GetEntry(unsigned int index) const
+{
+	return (entries[index]);
+}
+
+PitEntry *PitData::FindEntry(const char *partitionName)
+{
+	for (unsigned int i = 0; i < entries.size(); i++)
+	{
+		if (entries[i]->IsFlashable() && strcmp(entries[i]->GetPartitionName(), partitionName) == 0)
+			return (entries[i]);
+	}
+
+	return (nullptr);
+}
+
+const PitEntry *PitData::FindEntry(const char *partitionName) const
+{
+	for (unsigned int i = 0; i < entries.size(); i++)
+	{
+		if (entries[i]->IsFlashable() && strcmp(entries[i]->GetPartitionName(), partitionName) == 0)
+			return (entries[i]);
+	}
+
+	return (nullptr);
+}
+
+PitEntry *PitData::FindEntry(unsigned int partitionIdentifier)
+{
+	for (unsigned int i = 0; i < entries.size(); i++)
+	{
+		if (entries[i]->IsFlashable() && entries[i]->GetIdentifier() == partitionIdentifier)
+			return (entries[i]);
+	}
+
+	return (nullptr);
+}
+
+const PitEntry *PitData::FindEntry(unsigned int partitionIdentifier) const
+{
+	for (unsigned int i = 0; i < entries.size(); i++)
+	{
+		if (entries[i]->IsFlashable() && entries[i]->GetIdentifier() == partitionIdentifier)
+			return (entries[i]);
+	}
+
+	return (nullptr);
+}