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usb_device_android.cc
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usb_device_android.cc
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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "device/usb/usb_device_android.h"
#include "base/android/build_info.h"
#include "base/android/jni_string.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/threading/thread_task_runner_handle.h"
#include "device/usb/usb_configuration_android.h"
#include "device/usb/usb_descriptors.h"
#include "device/usb/usb_device_handle_android.h"
#include "device/usb/usb_interface_android.h"
#include "device/usb/usb_service_android.h"
#include "device/usb/webusb_descriptors.h"
#include "jni/ChromeUsbDevice_jni.h"
using base::android::ConvertJavaStringToUTF16;
using base::android::JavaRef;
using base::android::ScopedJavaLocalRef;
namespace device {
// static
bool UsbDeviceAndroid::RegisterJNI(JNIEnv* env) {
return RegisterNativesImpl(env); // Generated in ChromeUsbDevice_jni.h
}
// static
scoped_refptr<UsbDeviceAndroid> UsbDeviceAndroid::Create(
JNIEnv* env,
base::WeakPtr<UsbServiceAndroid> service,
scoped_refptr<base::SequencedTaskRunner> blocking_task_runner,
const JavaRef<jobject>& usb_device) {
ScopedJavaLocalRef<jobject> wrapper =
Java_ChromeUsbDevice_create(env, usb_device.obj());
uint16_t device_version = 0;
if (base::android::BuildInfo::GetInstance()->sdk_int() >= 23)
device_version = Java_ChromeUsbDevice_getDeviceVersion(env, wrapper.obj());
base::string16 manufacturer_string, product_string, serial_number;
if (base::android::BuildInfo::GetInstance()->sdk_int() >= 21) {
manufacturer_string = ConvertJavaStringToUTF16(
env, Java_ChromeUsbDevice_getManufacturerName(env, wrapper.obj()));
product_string = ConvertJavaStringToUTF16(
env, Java_ChromeUsbDevice_getProductName(env, wrapper.obj()));
serial_number = ConvertJavaStringToUTF16(
env, Java_ChromeUsbDevice_getSerialNumber(env, wrapper.obj()));
}
return make_scoped_refptr(new UsbDeviceAndroid(
env, service,
0x0200, // USB protocol version, not provided by the Android API.
Java_ChromeUsbDevice_getDeviceClass(env, wrapper.obj()),
Java_ChromeUsbDevice_getDeviceSubclass(env, wrapper.obj()),
Java_ChromeUsbDevice_getDeviceProtocol(env, wrapper.obj()),
Java_ChromeUsbDevice_getVendorId(env, wrapper.obj()),
Java_ChromeUsbDevice_getProductId(env, wrapper.obj()), device_version,
manufacturer_string, product_string, serial_number, blocking_task_runner,
wrapper));
}
void UsbDeviceAndroid::RequestPermission(const ResultCallback& callback) {
if (!permission_granted_ && service_) {
request_permission_callbacks_.push_back(callback);
service_->RequestDevicePermission(j_object_, device_id_);
} else {
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::Bind(callback, permission_granted_));
}
}
void UsbDeviceAndroid::Open(const OpenCallback& callback) {
scoped_refptr<UsbDeviceHandle> device_handle;
if (service_) {
JNIEnv* env = base::android::AttachCurrentThread();
ScopedJavaLocalRef<jobject> connection =
service_->OpenDevice(env, j_object_);
if (!connection.is_null()) {
device_handle = UsbDeviceHandleAndroid::Create(
env, this, blocking_task_runner_, connection);
handles().push_back(device_handle.get());
}
}
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::Bind(callback, device_handle));
}
bool UsbDeviceAndroid::permission_granted() const {
return permission_granted_;
}
UsbDeviceAndroid::UsbDeviceAndroid(
JNIEnv* env,
base::WeakPtr<UsbServiceAndroid> service,
uint16_t usb_version,
uint8_t device_class,
uint8_t device_subclass,
uint8_t device_protocol,
uint16_t vendor_id,
uint16_t product_id,
uint16_t device_version,
const base::string16& manufacturer_string,
const base::string16& product_string,
const base::string16& serial_number,
scoped_refptr<base::SequencedTaskRunner> blocking_task_runner,
const JavaRef<jobject>& wrapper)
: UsbDevice(usb_version,
device_class,
device_subclass,
device_protocol,
vendor_id,
product_id,
device_version,
manufacturer_string,
product_string,
serial_number),
blocking_task_runner_(blocking_task_runner),
device_id_(Java_ChromeUsbDevice_getDeviceId(env, wrapper.obj())),
service_(service),
j_object_(wrapper) {
if (base::android::BuildInfo::GetInstance()->sdk_int() >= 21) {
ScopedJavaLocalRef<jobjectArray> configurations =
Java_ChromeUsbDevice_getConfigurations(env, j_object_.obj());
jsize count = env->GetArrayLength(configurations.obj());
configurations_.reserve(count);
for (jsize i = 0; i < count; ++i) {
ScopedJavaLocalRef<jobject> config(
env, env->GetObjectArrayElement(configurations.obj(), i));
configurations_.push_back(UsbConfigurationAndroid::Convert(env, config));
}
} else {
// Pre-lollipop only the first configuration was supported. Build a basic
// configuration out of the available interfaces.
UsbConfigDescriptor config(1, // Configuration value, reasonable guess.
false, // Self powered, arbitrary default.
false, // Remote wakeup, rbitrary default.
0); // Maximum power, aitrary default.
ScopedJavaLocalRef<jobjectArray> interfaces =
Java_ChromeUsbDevice_getInterfaces(env, wrapper.obj());
jsize count = env->GetArrayLength(interfaces.obj());
config.interfaces.reserve(count);
for (jsize i = 0; i < count; ++i) {
ScopedJavaLocalRef<jobject> interface(
env, env->GetObjectArrayElement(interfaces.obj(), i));
config.interfaces.push_back(UsbInterfaceAndroid::Convert(env, interface));
}
configurations_.push_back(config);
}
}
UsbDeviceAndroid::~UsbDeviceAndroid() {}
void UsbDeviceAndroid::PermissionGranted(bool granted) {
if (granted)
Open(base::Bind(&UsbDeviceAndroid::OnDeviceOpenedToReadDescriptors, this));
else
CallRequestPermissionCallbacks(granted);
}
void UsbDeviceAndroid::CallRequestPermissionCallbacks(bool granted) {
permission_granted_ = granted;
std::list<ResultCallback> callbacks;
callbacks.swap(request_permission_callbacks_);
for (const auto& callback : callbacks)
callback.Run(granted);
}
void UsbDeviceAndroid::OnDeviceOpenedToReadDescriptors(
scoped_refptr<UsbDeviceHandle> device_handle) {
if (device_handle) {
ReadUsbDescriptors(
device_handle,
base::Bind(&UsbDeviceAndroid::OnReadDescriptors, this, device_handle));
} else {
CallRequestPermissionCallbacks(false);
}
}
void UsbDeviceAndroid::OnReadDescriptors(
scoped_refptr<UsbDeviceHandle> device_handle,
std::unique_ptr<UsbDeviceDescriptor> descriptor) {
if (!descriptor) {
device_handle->Close();
CallRequestPermissionCallbacks(false);
return;
}
usb_version_ = descriptor->usb_version;
device_version_ = descriptor->device_version;
configurations_ = descriptor->configurations;
if (usb_version_ >= 0x0210) {
ReadWebUsbDescriptors(device_handle,
base::Bind(&UsbDeviceAndroid::OnReadWebUsbDescriptors,
this, device_handle));
} else {
device_handle->Close();
CallRequestPermissionCallbacks(true);
}
}
void UsbDeviceAndroid::OnReadWebUsbDescriptors(
scoped_refptr<UsbDeviceHandle> device_handle,
std::unique_ptr<WebUsbAllowedOrigins> allowed_origins,
const GURL& landing_page) {
if (allowed_origins)
webusb_allowed_origins_ = std::move(allowed_origins);
if (landing_page.is_valid())
webusb_landing_page_ = landing_page;
device_handle->Close();
CallRequestPermissionCallbacks(true);
}
} // namespace device