extensions/browser/api/device_permissions_prompt.cc

   1 // Copyright 2014 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 "extensions/browser/api/device_permissions_prompt.h"
   6
   7 #include "base/strings/stringprintf.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "content/public/browser/browser_thread.h"
  10 #include "device/core/device_client.h"
  11 #include "device/usb/usb_device.h"
  12 #include "device/usb/usb_device_filter.h"
  13 #include "device/usb/usb_ids.h"
  14 #include "device/usb/usb_service.h"
  15 #include "extensions/browser/api/device_permissions_manager.h"
  16 #include "extensions/common/extension.h"
  17 #include "extensions/strings/grit/extensions_strings.h"
  18 #include "ui/base/l10n/l10n_util.h"
  19
  20 namespace extensions {
  21
  22 using device::UsbDevice;
  23 using device::UsbDeviceFilter;
  24 using device::UsbService;
  25
  26 DevicePermissionsPrompt::Prompt::DeviceInfo::DeviceInfo(
  27     scoped_refptr<UsbDevice> device,
  28     const base::string16& name,
  29     const base::string16& product_string,
  30     const base::string16& manufacturer_string,
  31     const base::string16& serial_number)
  32     : device(device),
  33       name(name),
  34       product_string(product_string),
  35       manufacturer_string(manufacturer_string),
  36       serial_number(serial_number) {
  37 }
  38
  39 DevicePermissionsPrompt::Prompt::DeviceInfo::~DeviceInfo() {
  40 }
  41
  42 DevicePermissionsPrompt::Prompt::Prompt()
  43     : extension_(nullptr),
  44       browser_context_(nullptr),
  45       multiple_(false),
  46       observer_(nullptr) {
  47 }
  48
  49 void DevicePermissionsPrompt::Prompt::SetObserver(Observer* observer) {
  50   observer_ = observer;
  51
  52   content::BrowserThread::PostTask(
  53       content::BrowserThread::FILE,
  54       FROM_HERE,
  55       base::Bind(&DevicePermissionsPrompt::Prompt::DoDeviceQuery, this));
  56 }
  57
  58 base::string16 DevicePermissionsPrompt::Prompt::GetHeading() const {
  59   return l10n_util::GetStringUTF16(IDS_DEVICE_PERMISSIONS_PROMPT_HEADING);
  60 }
  61
  62 base::string16 DevicePermissionsPrompt::Prompt::GetPromptMessage() const {
  63   return l10n_util::GetStringFUTF16(multiple_
  64                                         ? IDS_DEVICE_PERMISSIONS_PROMPT_MULTIPLE
  65                                         : IDS_DEVICE_PERMISSIONS_PROMPT_SINGLE,
  66                                     base::UTF8ToUTF16(extension_->name()));
  67 }
  68
  69 scoped_refptr<UsbDevice> DevicePermissionsPrompt::Prompt::GetDevice(
  70     size_t index) const {
  71   DCHECK_LT(index, devices_.size());
  72   return devices_[index].device;
  73 }
  74
  75 void DevicePermissionsPrompt::Prompt::GrantDevicePermission(
  76     size_t index) const {
  77   DCHECK_LT(index, devices_.size());
  78   DevicePermissionsManager* permissions_manager =
  79       DevicePermissionsManager::Get(browser_context_);
  80   if (permissions_manager) {
  81     const DeviceInfo& device = devices_[index];
  82     permissions_manager->AllowUsbDevice(extension_->id(),
  83                                         device.device,
  84                                         device.product_string,
  85                                         device.manufacturer_string,
  86                                         device.serial_number);
  87   }
  88 }
  89
  90 void DevicePermissionsPrompt::Prompt::set_filters(
  91     const std::vector<UsbDeviceFilter>& filters) {
  92   filters_ = filters;
  93 }
  94
  95 DevicePermissionsPrompt::Prompt::~Prompt() {
  96 }
  97
  98 void DevicePermissionsPrompt::Prompt::DoDeviceQuery() {
  99   UsbService* service = device::DeviceClient::Get()->GetUsbService();
 100   if (!service) {
 101     return;
 102   }
 103
 104   std::vector<scoped_refptr<UsbDevice>> devices;
 105   service->GetDevices(&devices);
 106
 107   std::vector<DeviceInfo> device_info;
 108   for (const auto& device : devices) {
 109     if (!(filters_.empty() || UsbDeviceFilter::MatchesAny(device, filters_))) {
 110       continue;
 111     }
 112
 113     base::string16 manufacturer_string;
 114     base::string16 original_manufacturer_string;
 115     if (device->GetManufacturer(&original_manufacturer_string)) {
 116       manufacturer_string = original_manufacturer_string;
 117     } else {
 118       const char* vendor_name =
 119           device::UsbIds::GetVendorName(device->vendor_id());
 120       if (vendor_name) {
 121         manufacturer_string = base::UTF8ToUTF16(vendor_name);
 122       } else {
 123         base::string16 vendor_id = base::ASCIIToUTF16(
 124             base::StringPrintf("0x%04x", device->vendor_id()));
 125         manufacturer_string =
 126             l10n_util::GetStringFUTF16(IDS_DEVICE_UNKNOWN_VENDOR, vendor_id);
 127       }
 128     }
 129
 130     base::string16 product_string;
 131     base::string16 original_product_string;
 132     if (device->GetProduct(&original_product_string)) {
 133       product_string = original_product_string;
 134     } else {
 135       const char* product_name = device::UsbIds::GetProductName(
 136           device->vendor_id(), device->product_id());
 137       if (product_name) {
 138         product_string = base::UTF8ToUTF16(product_name);
 139       } else {
 140         base::string16 product_id = base::ASCIIToUTF16(
 141             base::StringPrintf("0x%04x", device->product_id()));
 142         product_string =
 143             l10n_util::GetStringFUTF16(IDS_DEVICE_UNKNOWN_PRODUCT, product_id);
 144       }
 145     }
 146
 147     base::string16 serial_number;
 148     if (!device->GetSerialNumber(&serial_number)) {
 149       serial_number.clear();
 150     }
 151
 152     device_info.push_back(DeviceInfo(
 153         device,
 154         l10n_util::GetStringFUTF16(IDS_DEVICE_PERMISSIONS_DEVICE_NAME,
 155                                    product_string,
 156                                    manufacturer_string),
 157         original_product_string,
 158         original_manufacturer_string,
 159         serial_number));
 160   }
 161
 162   content::BrowserThread::PostTask(
 163       content::BrowserThread::UI,
 164       FROM_HERE,
 165       base::Bind(
 166           &DevicePermissionsPrompt::Prompt::SetDevices, this, device_info));
 167 }
 168
 169 void DevicePermissionsPrompt::Prompt::SetDevices(
 170     const std::vector<DeviceInfo>& devices) {
 171   devices_ = devices;
 172   if (observer_) {
 173     observer_->OnDevicesChanged();
 174   }
 175 }
 176
 177 DevicePermissionsPrompt::DevicePermissionsPrompt(
 178     content::WebContents* web_contents)
 179     : web_contents_(web_contents), delegate_(nullptr) {
 180 }
 181
 182 DevicePermissionsPrompt::~DevicePermissionsPrompt() {
 183 }
 184
 185 void DevicePermissionsPrompt::AskForUsbDevices(
 186     Delegate* delegate,
 187     const Extension* extension,
 188     content::BrowserContext* context,
 189     bool multiple,
 190     const std::vector<UsbDeviceFilter>& filters) {
 191   prompt_ = new Prompt();
 192   prompt_->set_extension(extension);
 193   prompt_->set_browser_context(context);
 194   prompt_->set_multiple(multiple);
 195   prompt_->set_filters(filters);
 196   delegate_ = delegate;
 197
 198   ShowDialog();
 199 }
 200
 201 }  // namespace extensions