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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/browser/usb/usb_device.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 | |
| 9 #include "base/stl_util.h" | |
| 10 #include "chrome/browser/usb/usb_context.h" | |
| 11 #include "chrome/browser/usb/usb_device_handle.h" | |
| 12 #include "content/public/browser/browser_thread.h" | |
| 13 #include "third_party/libusb/src/libusb/libusb.h" | |
| 14 | |
| 15 #if defined(OS_CHROMEOS) | |
| 16 #include "base/sys_info.h" | |
| 17 #include "chromeos/dbus/dbus_thread_manager.h" | |
| 18 #include "chromeos/dbus/permission_broker_client.h" | |
| 19 #endif // defined(OS_CHROMEOS) | |
| 20 | |
| 21 using content::BrowserThread; | |
| 22 | |
| 23 namespace { | |
| 24 | |
| 25 #if defined(OS_CHROMEOS) | |
| 26 void OnRequestUsbAccessReplied( | |
| 27 const base::Callback<void(bool success)>& callback, | |
| 28 bool success) { | |
| 29 BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE, | |
| 30 base::Bind(callback, success)); | |
| 31 } | |
| 32 #endif // defined(OS_CHROMEOS) | |
| 33 | |
| 34 } // namespace | |
| 35 | |
| 36 UsbDevice::UsbDevice( | |
| 37 scoped_refptr<UsbContext> context, | |
| 38 PlatformUsbDevice platform_device, | |
| 39 uint16 vendor_id, | |
| 40 uint16 product_id, | |
| 41 uint32 unique_id) | |
| 42 : platform_device_(platform_device), | |
| 43 vendor_id_(vendor_id), | |
| 44 product_id_(product_id), | |
| 45 unique_id_(unique_id), | |
| 46 context_(context) { | |
| 47 CHECK(platform_device) << "platform_device cannot be NULL"; | |
| 48 libusb_ref_device(platform_device); | |
| 49 } | |
| 50 | |
| 51 UsbDevice::UsbDevice() | |
| 52 : platform_device_(NULL), | |
| 53 vendor_id_(0), | |
| 54 product_id_(0), | |
| 55 unique_id_(0), | |
| 56 context_(NULL) { | |
| 57 } | |
| 58 | |
| 59 UsbDevice::~UsbDevice() { | |
| 60 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 61 for (HandlesVector::iterator it = handles_.begin(); | |
| 62 it != handles_.end(); | |
| 63 ++it) { | |
| 64 (*it)->InternalClose(); | |
| 65 } | |
| 66 STLClearObject(&handles_); | |
| 67 libusb_unref_device(platform_device_); | |
| 68 } | |
| 69 | |
| 70 #if defined(OS_CHROMEOS) | |
| 71 | |
| 72 void UsbDevice::RequestUsbAcess( | |
| 73 int interface_id, | |
| 74 const base::Callback<void(bool success)>& callback) { | |
| 75 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 76 | |
| 77 // ChromeOS builds on non-ChromeOS machines (dev) should not attempt to | |
| 78 // use permission broker. | |
| 79 if (base::SysInfo::IsRunningOnChromeOS()) { | |
| 80 chromeos::PermissionBrokerClient* client = | |
| 81 chromeos::DBusThreadManager::Get()->GetPermissionBrokerClient(); | |
| 82 DCHECK(client) << "Could not get permission broker client."; | |
| 83 if (!client) { | |
| 84 callback.Run(false); | |
| 85 return; | |
| 86 } | |
| 87 | |
| 88 BrowserThread::PostTask( | |
| 89 BrowserThread::UI, FROM_HERE, | |
| 90 base::Bind(&chromeos::PermissionBrokerClient::RequestUsbAccess, | |
| 91 base::Unretained(client), | |
| 92 this->vendor_id_, | |
| 93 this->product_id_, | |
| 94 interface_id, | |
| 95 base::Bind(&OnRequestUsbAccessReplied, callback))); | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 #endif | |
| 100 | |
| 101 scoped_refptr<UsbDeviceHandle> UsbDevice::Open() { | |
| 102 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 103 PlatformUsbDeviceHandle handle; | |
| 104 int rv = libusb_open(platform_device_, &handle); | |
| 105 if (LIBUSB_SUCCESS == rv) { | |
| 106 scoped_refptr<UsbConfigDescriptor> interfaces = ListInterfaces(); | |
| 107 if (!interfaces) | |
| 108 return NULL; | |
| 109 scoped_refptr<UsbDeviceHandle> device_handle = | |
| 110 new UsbDeviceHandle(context_, this, handle, interfaces); | |
| 111 handles_.push_back(device_handle); | |
| 112 return device_handle; | |
| 113 } | |
| 114 return NULL; | |
| 115 } | |
| 116 | |
| 117 bool UsbDevice::Close(scoped_refptr<UsbDeviceHandle> handle) { | |
| 118 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 119 | |
| 120 for (HandlesVector::iterator it = handles_.begin(); | |
| 121 it != handles_.end(); | |
| 122 ++it) { | |
| 123 if (*it == handle) { | |
| 124 (*it)->InternalClose(); | |
| 125 handles_.erase(it); | |
| 126 return true; | |
| 127 } | |
| 128 } | |
| 129 return false; | |
| 130 } | |
| 131 | |
| 132 scoped_refptr<UsbConfigDescriptor> UsbDevice::ListInterfaces() { | |
| 133 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 134 | |
| 135 PlatformUsbConfigDescriptor platform_config; | |
| 136 const int list_result = | |
| 137 libusb_get_active_config_descriptor(platform_device_, &platform_config); | |
| 138 if (list_result == 0) | |
| 139 return new UsbConfigDescriptor(platform_config); | |
| 140 | |
| 141 return NULL; | |
| 142 } | |
| 143 | |
| 144 void UsbDevice::OnDisconnect() { | |
| 145 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 146 HandlesVector handles; | |
| 147 swap(handles, handles_); | |
| 148 for (std::vector<scoped_refptr<UsbDeviceHandle> >::iterator it = | |
| 149 handles.begin(); | |
| 150 it != handles.end(); | |
| 151 ++it) { | |
| 152 (*it)->InternalClose(); | |
| 153 } | |
| 154 } | |
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Chromium Code Reviews
Issue 236203019:
Move UsbService to its own component. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src