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Commit 76fc5f18 authored by Adam Lesinski's avatar Adam Lesinski Committed by Android Git Automerger
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am 16b0ae10: Merge "add number constraint for samples per MotionEvent" into mnc-dr-dev 

* commit '16b0ae10':
  add number constraint for samples per MotionEvent
parents 33c3c1bd 16b0ae10

include/input/Input.h

+5 −0
Original line number Diff line number Diff line
@@ -110,6 +110,11 @@ enum { 
 */

#define MAX_POINTERS 16



/*

 * Maximum number of samples supported per motion event.

 */

#define MAX_SAMPLES UINT16_MAX



/*

 * Maximum pointer id value supported in a motion event.

 * Smallest pointer id is 0.

libs/input/Input.cpp

+2 −1
Original line number Diff line number Diff line
@@ -424,7 +424,8 @@ void MotionEvent::transform(const float matrix[9]) { 
status_t MotionEvent::readFromParcel(Parcel* parcel) {

    size_t pointerCount = parcel->readInt32();

    size_t sampleCount = parcel->readInt32();

    if (pointerCount == 0 || pointerCount > MAX_POINTERS || sampleCount == 0) {

    if (pointerCount == 0 || pointerCount > MAX_POINTERS ||

            sampleCount == 0 || sampleCount > MAX_SAMPLES) {

        return BAD_VALUE;

    }