如何从Python代码中直接访问Android的Service - linux编程基础

binder_wrap.h

#ifndef BINDER_WRAP_H

#define BINDER_WRAP_H

#ifdef __cplusplus

extern "C" {

#endif

typedef int (*vector_visitor)(const char16_t* str16,int length,void *data);

typedef int (*fnOnTransact)(uint32_t code,const void *data,void *reply,uint32_t flags,void *userData);

int server_create(const char *name,const char *descriptor,fnOnTransact onTrans,void *data);

void* binder_getbinder(const char *name);

int binder_releasebinder(void* binder);

int binder_listServices(vector_visitor visitor,void *data);

int binder_getInterfaceDescriptor(void *binder,char16_t *descriptor,size_t size);

int binder_transact(void* binder,int code,const void *data,void* reply,int flags);

void* parcel_new();

int parcel_destroy(void* parcel);

int parcel_writeInterfaceToken(void* parcel,const char *interface);

int parcel_writeInt32(void *parcel,int val);

int parcel_writeCString(void *parcel,const char* str);

int parcel_writeString16(void *parcel,const char16_t* str, size_t len);

int parcel_readInt32(void *parcel);

long parcel_readInt64(void *parcel);

int parcel_readString16(void *parcel,char16_t* str, size_t len);

int parcel_readInplace(void *parcel,void* data, int len);

int parcel_readExceptionCode(void *parcel);

int parcel_dataAvail(void *parcel);

#ifdef __cplusplus

}

#endif

binder_wrap.cpp

#include

#include "binder_wrap.h"

using namespace android;

void* binder_getbinder(const char *name)

{

android::sp sm = android::defaultServiceManager();

sp *binder = new sp();

do {

*binder = sm->getService(android::String16(name));

if (binder != 0)

{

break;

}

usleep(500000); // 0.5 s

} while(true);

return reinterpret_cast(binder);

}

int binder_releasebinder(void* binder)

{

sp *bp = reinterpret_cast *>(binder);

if(bp == 0)

{

return 0;

}

delete bp;

return 1;

}

//Vector listServices() = 0;

int binder_listServices(vector_visitor visitor,void *data)

{

android::sp sm = android::defaultServiceManager();

Vector list = sm->listServices();

for (int i=0;i

{

visitor(list[i].string(),list[i].size(),data);

}

return list.size();

}

int binder_getInterfaceDescriptor(void *binder,char16_t *descriptor,size_t size)

{

sp *bp = reinterpret_cast *>(binder);

if(bp == 0)

{

return 0;

}

if (descriptor == NULL || size <= 0)

{

return 0;

}

String16 des = (*bp)->getInterfaceDescriptor();

if (size > des.size())

{

size = des.size();

}

memcpy(descriptor,des.string(),size*2);

return size;

}

//int binder_transact(void* binder,int code,const Parcel& data,Parcel* reply,int flags = 0)

int binder_transact(void* binder,int code,const void *data,void* reply,int flags)

{

sp *bp = reinterpret_cast *>(binder);

if(bp == 0 || data == 0 || reply == 0)

{

return 0;

}

return (*bp)->transact(code,*(Parcel*)data,(Parcel*)reply,flags);

}

void* parcel_new()

{

return (void*)new Parcel();

}

int parcel_destroy(void* parcel)

{

if(parcel == 0)

{

return 0;

}

delete (Parcel*)parcel;

return 1;

}

int parcel_writeInterfaceToken(void* parcel,const char *interface)

{

Parcel *p = reinterpret_cast(parcel);

if(p == 0)

如何从Python代码中直接访问Android的Service(一)