chrome/browser/resources/cryptotoken/gnubbydevice.js

   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 /**
   6  * @fileoverview Interface for representing a low-level gnubby device.
   7  */
   8 'use strict';
   9
  10 /**
  11  * Low level gnubby 'driver'. One per physical USB device.
  12  * @interface
  13  */
  14 function GnubbyDevice() {}
  15
  16 // Commands of the USB interface.
  17 /** Echo data through local processor only */
  18 GnubbyDevice.CMD_PING = 0x81;
  19 /** Perform reset action and read ATR string */
  20 GnubbyDevice.CMD_ATR = 0x82;
  21 /** Send raw APDU */
  22 GnubbyDevice.CMD_APDU = 0x83;
  23 /** Send lock channel command */
  24 GnubbyDevice.CMD_LOCK = 0x84;
  25 /** Obtain system information record */
  26 GnubbyDevice.CMD_SYSINFO = 0x85;
  27 /** Obtain an unused channel ID */
  28 GnubbyDevice.CMD_INIT = 0x86;
  29 /** Control prompt flashing */
  30 GnubbyDevice.CMD_PROMPT = 0x87;
  31 /** Send device identification wink */
  32 GnubbyDevice.CMD_WINK = 0x88;
  33 /** USB test */
  34 GnubbyDevice.CMD_USB_TEST = 0xb9;
  35 /** Device Firmware Upgrade */
  36 GnubbyDevice.CMD_DFU = 0xba;
  37 /** Protocol resync command */
  38 GnubbyDevice.CMD_SYNC = 0xbc;
  39 /** Error response */
  40 GnubbyDevice.CMD_ERROR = 0xbf;
  41
  42 // Low-level error codes.
  43 /** No error */
  44 GnubbyDevice.OK = 0;
  45 /** Invalid command */
  46 GnubbyDevice.INVALID_CMD = 1;
  47 /** Invalid parameter */
  48 GnubbyDevice.INVALID_PAR = 2;
  49 /** Invalid message length */
  50 GnubbyDevice.INVALID_LEN = 3;
  51 /** Invalid message sequencing */
  52 GnubbyDevice.INVALID_SEQ = 4;
  53 /** Message has timed out */
  54 GnubbyDevice.TIMEOUT = 5;
  55 /** CHannel is busy */
  56 GnubbyDevice.BUSY = 6;
  57 /** Access denied */
  58 GnubbyDevice.ACCESS_DENIED = 7;
  59 /** Device is gone */
  60 GnubbyDevice.GONE = 8;
  61 /** Verification error */
  62 GnubbyDevice.VERIFY_ERROR = 9;
  63 /** Command requires channel lock */
  64 GnubbyDevice.LOCK_REQUIRED = 10;
  65 /** Sync error */
  66 GnubbyDevice.SYNC_FAIL = 11;
  67 /** Other unspecified error */
  68 GnubbyDevice.OTHER = 127;
  69
  70 // Remote helper errors.
  71 /** Not a remote helper */
  72 GnubbyDevice.NOTREMOTE = 263;
  73 /** Could not reach remote endpoint */
  74 GnubbyDevice.COULDNOTDIAL = 264;
  75
  76 // chrome.usb-related errors.
  77 /** No device */
  78 GnubbyDevice.NODEVICE = 512;
  79 /** Permission denied */
  80 GnubbyDevice.NOPERMISSION = 666;
  81
  82 /** Destroys this low-level device instance. */
  83 GnubbyDevice.prototype.destroy = function() {};
  84
  85 /**
  86  * Register a client for this gnubby.
  87  * @param {*} who The client.
  88  */
  89 GnubbyDevice.prototype.registerClient = function(who) {};
  90
  91 /**
  92  * De-register a client.
  93  * @param {*} who The client.
  94  * @return {number} The number of remaining listeners for this device, or -1
  95  *     if this had no clients to start with.
  96  */
  97 GnubbyDevice.prototype.deregisterClient = function(who) {};
  98
  99 /**
 100  * @param {*} who The client.
 101  * @return {boolean} Whether this device has who as a client.
 102  */
 103 GnubbyDevice.prototype.hasClient = function(who) {};
 104
 105 /**
 106  * Queue command to be sent.
 107  * If queue was empty, initiate the write.
 108  * @param {number} cid The client's channel ID.
 109  * @param {number} cmd The command to send.
 110  * @param {ArrayBuffer|Uint8Array} data Command data
 111  */
 112 GnubbyDevice.prototype.queueCommand = function(cid, cmd, data) {};
 113
 114 /**
 115  * @typedef {{
 116  *   vendorId: number,
 117  *   productId: number
 118  * }}
 119  */
 120 var UsbDeviceSpec;
 121
 122 /**
 123  * Gets the list of USB devices permitted by this app.
 124  * @param {function(!Array.<!UsbDeviceSpec>)} cb Called back with a list of USB
 125  *     device specifiers.
 126  */
 127 GnubbyDevice.getPermittedUsbDevices = function(cb) {
 128   chrome.permissions.getAll(function(perms) {
 129     if (!perms.hasOwnProperty('permissions')) {
 130       cb([]);
 131       return;
 132     }
 133     var devs = [];
 134     var permissions = perms['permissions'];
 135     for (var i = 0; i < permissions.length; i++) {
 136       var permission = permissions[i];
 137       if (typeof permission === 'object' &&
 138           permission.hasOwnProperty('usbDevices')) {
 139         for (var j = 0; j < permission['usbDevices'].length; j++) {
 140           var dev = permission['usbDevices'][j];
 141           devs.push(
 142               {'vendorId': dev['vendorId'], 'productId': dev['productId']});
 143         }
 144       }
 145     }
 146     cb(devs);
 147   });
 148 };