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Commit 30aa4375 authored by Huihong Luo's avatar Huihong Luo
Browse files

Fix data type error in AIDL 

utf8InCpp string should not be used to pass arbitrary data, as it drops
invalid chars during utf8-utf16 conversion.
byte[] is the correct type to use.

Bug: 250401609
Test: atest libgui_test libsurfaceflinger_unittest SurfaceFlinger_test
Change-Id: Ia1bf7e2cdc134a392d7b4edace9b2799a4c0d23b
parent a84abc85

libs/gui/SurfaceComposerClient.cpp

+1 −1
Original line number Diff line number Diff line
@@ -2542,7 +2542,7 @@ status_t SurfaceComposerClient::onPullAtom(const int32_t atomId, std::string* ou 
    gui::PullAtomData pad;

    binder::Status status = ComposerServiceAIDL::getComposerService()->onPullAtom(atomId, &pad);

    if (status.isOk()) {

        outData->assign((const char*)pad.data.data(), pad.data.size());

        outData->assign(pad.data.begin(), pad.data.end());

        *success = pad.success;

    }

    return statusTFromBinderStatus(status);

libs/gui/aidl/android/gui/PullAtomData.aidl

+1 −1
Original line number Diff line number Diff line
@@ -18,6 +18,6 @@ package android.gui; 


/** @hide */

parcelable PullAtomData {

    @utf8InCpp String data;

    byte[] data;

    boolean success;

}

services/surfaceflinger/SurfaceFlinger.cpp

+2 −1
Original line number Diff line number Diff line
@@ -1558,7 +1558,8 @@ status_t SurfaceFlinger::overrideHdrTypes(const sp<IBinder>& displayToken, 
    return NO_ERROR;

}



status_t SurfaceFlinger::onPullAtom(const int32_t atomId, std::string* pulledData, bool* success) {

status_t SurfaceFlinger::onPullAtom(const int32_t atomId, std::vector<uint8_t>* pulledData,

                                    bool* success) {

    *success = mTimeStats->onPullAtom(atomId, pulledData);

    return NO_ERROR;

}

services/surfaceflinger/SurfaceFlinger.h

+1 −1
Original line number Diff line number Diff line
@@ -527,7 +527,7 @@ private: 
    void setPowerMode(const sp<IBinder>& displayToken, int mode);

    status_t overrideHdrTypes(const sp<IBinder>& displayToken,

                              const std::vector<ui::Hdr>& hdrTypes);

    status_t onPullAtom(const int32_t atomId, std::string* pulledData, bool* success);

    status_t onPullAtom(const int32_t atomId, std::vector<uint8_t>* pulledData, bool* success);

    status_t getLayerDebugInfo(std::vector<gui::LayerDebugInfo>* outLayers);

    status_t getColorManagement(bool* outGetColorManagement) const;

    status_t getCompositionPreference(ui::Dataspace* outDataspace, ui::PixelFormat* outPixelFormat,

services/surfaceflinger/TimeStats/TimeStats.cpp

+7 −5
Original line number Diff line number Diff line
@@ -90,7 +90,7 @@ SurfaceflingerStatsLayerInfo_SetFrameRateVote frameRateVoteToProto( 
}

} // namespace



bool TimeStats::populateGlobalAtom(std::string* pulledData) {

bool TimeStats::populateGlobalAtom(std::vector<uint8_t>* pulledData) {

    std::lock_guard<std::mutex> lock(mMutex);



    if (mTimeStats.statsStartLegacy == 0) {
@@ -138,10 +138,11 @@ bool TimeStats::populateGlobalAtom(std::string* pulledData) { 
    // Always clear data.

    clearGlobalLocked();



    return atomList.SerializeToString(pulledData);

    pulledData->resize(atomList.ByteSizeLong());

    return atomList.SerializeToArray(pulledData->data(), atomList.ByteSizeLong());

}



bool TimeStats::populateLayerAtom(std::string* pulledData) {

bool TimeStats::populateLayerAtom(std::vector<uint8_t>* pulledData) {

    std::lock_guard<std::mutex> lock(mMutex);



    std::vector<TimeStatsHelper::TimeStatsLayer*> dumpStats;
@@ -229,7 +230,8 @@ bool TimeStats::populateLayerAtom(std::string* pulledData) { 
    // Always clear data.

    clearLayersLocked();



    return atomList.SerializeToString(pulledData);

    pulledData->resize(atomList.ByteSizeLong());

    return atomList.SerializeToArray(pulledData->data(), atomList.ByteSizeLong());

}



TimeStats::TimeStats() : TimeStats(std::nullopt, std::nullopt) {}
@@ -245,7 +247,7 @@ TimeStats::TimeStats(std::optional<size_t> maxPulledLayers, 
    }

}



bool TimeStats::onPullAtom(const int atomId, std::string* pulledData) {

bool TimeStats::onPullAtom(const int atomId, std::vector<uint8_t>* pulledData) {

    bool success = false;

    if (atomId == 10062) { // SURFACEFLINGER_STATS_GLOBAL_INFO

        success = populateGlobalAtom(pulledData);