Add bootloader extension

device/extensions/bootloader/parser/fwzip.cpp

@@ -0,0 +1,73 @@
+#include "icsneo/device/extensions/bootloader/parser/fwzip.h"
+#include "icsneo/device/extensions/bootloader/platform/logging.h"
+
+#include <miniz.h>
+
+namespace icsneo {
+
+namespace Bootloader {
+
+class ZipHandle {
+public:
+	ZipHandle() {
+		mz_zip_zero_struct(&handle);
+	}
+	~ZipHandle() {
+		mz_zip_reader_end(&handle);
+	}
+
+	operator mz_zip_archive*() {
+		return &handle;
+	}
+
+private:
+	mz_zip_archive handle;
+};
+
+// A zip firmware image holds a single entry, the raw binary to send to the device
+FWZip::FWZip(std::vector<uint8_t>&& tagData)
+	: handle(std::make_unique<ZipHandle>()), zipData(std::move(tagData)) {
+
+	if(!mz_zip_reader_init_mem(*handle, zipData.data(), zipData.size(), 0)) {
+		Log::Error(__func__, "The firmware zip could not be opened");
+		return;
+	}
+
+	mz_zip_archive_file_stat file;
+	if(!mz_zip_reader_file_stat(*handle, 0, &file)) {
+		Log::Error(__func__, "The firmware zip is empty or its first entry could not be read");
+	} else {
+		uncompressedSize = static_cast<size_t>(file.m_uncomp_size);
+	}
+}
+
+FWZip::~FWZip() = default;
+
+bool FWZip::readAll(uint8_t* out) {
+	if(!uncompressedSize) {
+		return false;
+	}
+
+	if(!out) {
+		Log::Error(__func__, "No output buffer for the firmware zip");
+		return false;
+	}
+
+	if(!mz_zip_reader_extract_to_mem(*handle, 0, out, *uncompressedSize, 0)) {
+		Log::Error(__func__, "The firmware zip could not be decompressed");
+		return false;
+	}
+	return true;
+}
+
+bool FWZip::readAll(std::vector<uint8_t>& out) {
+	if(!uncompressedSize) {
+		return false;
+	}
+	out = std::vector<uint8_t>(*uncompressedSize, 0);
+	return readAll(out.data());
+}
+
+} // namespace Bootloader
+
+} // namespace icsneo