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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkValidatingReadBuffer_DEFINED
#define SkValidatingReadBuffer_DEFINED
#include "SkRefCnt.h"
#include "SkBitmapHeap.h"
#include "SkReadBuffer.h"
#include "SkWriteBuffer.h"
#include "SkPath.h"
#include "SkPicture.h"
#include "SkReader32.h"
class SkBitmap;
class SkValidatingReadBuffer : public SkReadBuffer {
public:
SkValidatingReadBuffer(const void* data, size_t size);
virtual ~SkValidatingReadBuffer();
const void* skip(size_t size);
// primitives
virtual bool readBool() SK_OVERRIDE;
virtual SkColor readColor() SK_OVERRIDE;
virtual SkFixed readFixed() SK_OVERRIDE;
virtual int32_t readInt() SK_OVERRIDE;
virtual SkScalar readScalar() SK_OVERRIDE;
virtual uint32_t readUInt() SK_OVERRIDE;
virtual int32_t read32() SK_OVERRIDE;
// strings -- the caller is responsible for freeing the string contents
virtual void readString(SkString* string) SK_OVERRIDE;
virtual void* readEncodedString(size_t* length, SkPaint::TextEncoding encoding) SK_OVERRIDE;
// common data structures
virtual SkFlattenable* readFlattenable(SkFlattenable::Type type) SK_OVERRIDE;
virtual void skipFlattenable() SK_OVERRIDE;
virtual void readPoint(SkPoint* point) SK_OVERRIDE;
virtual void readMatrix(SkMatrix* matrix) SK_OVERRIDE;
virtual void readIRect(SkIRect* rect) SK_OVERRIDE;
virtual void readRect(SkRect* rect) SK_OVERRIDE;
virtual void readRegion(SkRegion* region) SK_OVERRIDE;
virtual void readPath(SkPath* path) SK_OVERRIDE;
// binary data and arrays
virtual bool readByteArray(void* value, size_t size) SK_OVERRIDE;
virtual bool readColorArray(SkColor* colors, size_t size) SK_OVERRIDE;
virtual bool readIntArray(int32_t* values, size_t size) SK_OVERRIDE;
virtual bool readPointArray(SkPoint* points, size_t size) SK_OVERRIDE;
virtual bool readScalarArray(SkScalar* values, size_t size) SK_OVERRIDE;
// helpers to get info about arrays and binary data
virtual uint32_t getArrayCount() SK_OVERRIDE;
// TODO: Implement this (securely) when needed
virtual SkTypeface* readTypeface() SK_OVERRIDE;
virtual bool validate(bool isValid) SK_OVERRIDE;
virtual bool isValid() const SK_OVERRIDE;
virtual bool validateAvailable(size_t size) SK_OVERRIDE;
private:
bool readArray(void* value, size_t size, size_t elementSize);
void setMemory(const void* data, size_t size);
static bool IsPtrAlign4(const void* ptr) {
return SkIsAlign4((uintptr_t)ptr);
}
bool fError;
typedef SkReadBuffer INHERITED;
};
#endif // SkValidatingReadBuffer_DEFINED
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