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Commit b024e3fb authored by Steven Moreland's avatar Steven Moreland Committed by Automerger Merge Worker
Browse files

Merge "libbinder: RPC drop extra header info" am: 6f9f5ea1 

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1653724

Change-Id: I440a68561880eef62f38ece7e7b92cfe27dc94f2
parents 07044716 6f9f5ea1

libs/binder/Parcel.cpp

+38 −32
Original line number Diff line number Diff line
@@ -41,11 +41,12 @@ 
#include <binder/TextOutput.h>



#include <cutils/ashmem.h>

#include <cutils/compiler.h>

#include <utils/Flattenable.h>

#include <utils/Log.h>

#include <utils/misc.h>

#include <utils/String8.h>

#include <utils/String16.h>

#include <utils/String8.h>

#include <utils/misc.h>



#include <private/binder/binder_module.h>

#include "RpcState.h"
@@ -590,12 +591,14 @@ status_t Parcel::writeInterfaceToken(const String16& interface) 
}



status_t Parcel::writeInterfaceToken(const char16_t* str, size_t len) {

    if (CC_LIKELY(!isForRpc())) {

        const IPCThreadState* threadState = IPCThreadState::self();

        writeInt32(threadState->getStrictModePolicy() | STRICT_MODE_PENALTY_GATHER);

        updateWorkSourceRequestHeaderPosition();

    writeInt32(threadState->shouldPropagateWorkSource() ?

            threadState->getCallingWorkSourceUid() : IPCThreadState::kUnsetWorkSource);

        writeInt32(threadState->shouldPropagateWorkSource() ? threadState->getCallingWorkSourceUid()

                                                            : IPCThreadState::kUnsetWorkSource);

        writeInt32(kHeader);

    }



    // currently the interface identification token is just its name as a string

    return writeString16(str, len);
@@ -642,17 +645,17 @@ bool Parcel::enforceInterface(const char16_t* interface, 
                              size_t len,

                              IPCThreadState* threadState) const

{

    if (CC_LIKELY(!isForRpc())) {

        // StrictModePolicy.

        int32_t strictPolicy = readInt32();

        if (threadState == nullptr) {

            threadState = IPCThreadState::self();

        }

    if ((threadState->getLastTransactionBinderFlags() &

         IBinder::FLAG_ONEWAY) != 0) {

        if ((threadState->getLastTransactionBinderFlags() & IBinder::FLAG_ONEWAY) != 0) {

            // For one-way calls, the callee is running entirely

            // disconnected from the caller, so disable StrictMode entirely.

            // Not only does disk/network usage not impact the caller, but

      // there's no way to commuicate back any violations anyway.

            // there's no way to communicate back violations anyway.

            threadState->setStrictModePolicy(0);

        } else {

            threadState->setStrictModePolicy(strictPolicy);
@@ -664,9 +667,12 @@ bool Parcel::enforceInterface(const char16_t* interface, 
        // vendor header

        int32_t header = readInt32();

        if (header != kHeader) {

        ALOGE("Expecting header 0x%x but found 0x%x. Mixing copies of libbinder?", kHeader, header);

            ALOGE("Expecting header 0x%x but found 0x%x. Mixing copies of libbinder?", kHeader,

                  header);

            return false;

        }

    }



    // Interface descriptor.

    size_t parcel_interface_len;

    const char16_t* parcel_interface = readString16Inplace(&parcel_interface_len);