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Diffstat (limited to 'dom/secureelement/gonk/UiccConnector.js')
-rw-r--r-- | dom/secureelement/gonk/UiccConnector.js | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/dom/secureelement/gonk/UiccConnector.js b/dom/secureelement/gonk/UiccConnector.js new file mode 100644 index 000000000..517303de2 --- /dev/null +++ b/dom/secureelement/gonk/UiccConnector.js @@ -0,0 +1,360 @@ +/* Copyright 2012 Mozilla Foundation and Mozilla contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/* Copyright © 2014, Deutsche Telekom, Inc. */ + +"use strict"; + +/* globals Components, XPCOMUtils, SE, dump, libcutils, Services, + iccService, SEUtils */ + +const { interfaces: Ci, utils: Cu, results: Cr } = Components; + +Cu.import("resource://gre/modules/XPCOMUtils.jsm"); +Cu.import("resource://gre/modules/Services.jsm"); +Cu.import("resource://gre/modules/systemlibs.js"); + +XPCOMUtils.defineLazyGetter(this, "SE", function() { + let obj = {}; + Cu.import("resource://gre/modules/se_consts.js", obj); + return obj; +}); + +// set to true in se_consts.js to see debug messages +var DEBUG = SE.DEBUG_CONNECTOR; +function debug(s) { + if (DEBUG) { + dump("-*- UiccConnector: " + s + "\n"); + } +} + +XPCOMUtils.defineLazyModuleGetter(this, "SEUtils", + "resource://gre/modules/SEUtils.jsm"); + +XPCOMUtils.defineLazyServiceGetter(this, "iccService", + "@mozilla.org/icc/iccservice;1", + "nsIIccService"); + +const UICCCONNECTOR_CONTRACTID = + "@mozilla.org/secureelement/connector/uicc;1"; +const UICCCONNECTOR_CID = + Components.ID("{8e040e5d-c8c3-4c1b-ac82-c00d25d8c4a4}"); +const NS_XPCOM_SHUTDOWN_OBSERVER_ID = "xpcom-shutdown"; + +// TODO: Bug 1118099 - Add multi-sim support. +// In the Multi-sim, there is more than one client. +// For now, use default clientID as 0. Ideally, SE parent process would like to +// know which clients (uicc slot) are connected to CLF over SWP interface. +const PREFERRED_UICC_CLIENTID = + libcutils.property_get("ro.moz.se.def_client_id", "0"); + +/** + * 'UiccConnector' object is a wrapper over iccService's channel management + * related interfaces that implements nsISecureElementConnector interface. + */ +function UiccConnector() { + this._init(); +} + +UiccConnector.prototype = { + QueryInterface: XPCOMUtils.generateQI([Ci.nsISecureElementConnector, + Ci.nsIIccListener]), + classID: UICCCONNECTOR_CID, + classInfo: XPCOMUtils.generateCI({ + classID: UICCCONNECTOR_CID, + contractID: UICCCONNECTOR_CONTRACTID, + classDescription: "UiccConnector", + interfaces: [Ci.nsISecureElementConnector, + Ci.nsIIccListener, + Ci.nsIObserver] + }), + + _SEListeners: [], + _isPresent: false, + + _init: function() { + Services.obs.addObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false); + let icc = iccService.getIccByServiceId(PREFERRED_UICC_CLIENTID); + icc.registerListener(this); + + // Update the state in order to avoid race condition. + // By this time, 'notifyCardStateChanged (with proper card state)' + // may have occurred already before this module initialization. + this._updatePresenceState(); + }, + + _shutdown: function() { + Services.obs.removeObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID); + let icc = iccService.getIccByServiceId(PREFERRED_UICC_CLIENTID); + icc.unregisterListener(this); + }, + + _updatePresenceState: function() { + let uiccNotReadyStates = [ + Ci.nsIIcc.CARD_STATE_UNKNOWN, + Ci.nsIIcc.CARD_STATE_ILLEGAL, + Ci.nsIIcc.CARD_STATE_PERSONALIZATION_IN_PROGRESS, + Ci.nsIIcc.CARD_STATE_PERMANENT_BLOCKED, + Ci.nsIIcc.CARD_STATE_UNDETECTED + ]; + + let cardState = iccService.getIccByServiceId(PREFERRED_UICC_CLIENTID).cardState; + let uiccPresent = cardState !== null && + uiccNotReadyStates.indexOf(cardState) == -1; + + if (this._isPresent === uiccPresent) { + return; + } + + debug("Uicc presence changed " + this._isPresent + " -> " + uiccPresent); + this._isPresent = uiccPresent; + this._SEListeners.forEach((listener) => { + listener.notifySEPresenceChanged(SE.TYPE_UICC, this._isPresent); + }); + }, + + // See GP Spec, 11.1.4 Class Byte Coding + _setChannelToCLAByte: function(cla, channel) { + if (channel < SE.LOGICAL_CHANNEL_NUMBER_LIMIT) { + // b7 = 0 indicates the first interindustry class byte coding + cla = (cla & 0x9C) & 0xFF | channel; + } else if (channel < SE.SUPPLEMENTARY_LOGICAL_CHANNEL_NUMBER_LIMIT) { + // b7 = 1 indicates the further interindustry class byte coding + cla = (cla & 0xB0) & 0xFF | 0x40 | (channel - SE.LOGICAL_CHANNEL_NUMBER_LIMIT); + } else { + debug("Channel number must be within [0..19]"); + return SE.ERROR_GENERIC; + } + return cla; + }, + + _doGetOpenResponse: function(channel, length, callback) { + // Le value is set. It means that this is a request for all available + // response bytes. + let cla = this._setChannelToCLAByte(SE.CLA_GET_RESPONSE, channel); + this.exchangeAPDU(channel, cla, SE.INS_GET_RESPONSE, 0x00, 0x00, + null, length, { + notifyExchangeAPDUResponse: function(sw1, sw2, response) { + debug("GET Response : " + response); + if (callback) { + callback({ + error: SE.ERROR_NONE, + sw1: sw1, + sw2: sw2, + response: response + }); + } + }, + + notifyError: function(reason) { + debug("Failed to get open response: " + + ", Rejected with Reason : " + reason); + if (callback) { + callback({ error: SE.ERROR_INVALIDAPPLICATION, reason: reason }); + } + } + }); + }, + + _doIccExchangeAPDU: function(channel, cla, ins, p1, p2, p3, + data, appendResp, callback) { + let icc = iccService.getIccByServiceId(PREFERRED_UICC_CLIENTID); + icc.iccExchangeAPDU(channel, cla & 0xFC, ins, p1, p2, p3, data, { + notifyExchangeAPDUResponse: (sw1, sw2, response) => { + debug("sw1 : " + sw1 + ", sw2 : " + sw2 + ", response : " + response); + + // According to ETSI TS 102 221 , Section 7.2.2.3.1, + // Enforce 'Procedure bytes' checks before notifying the callback. + // Note that 'Procedure bytes'are special cases. + // There is no need to handle '0x60' procedure byte as it implies + // no-action from SE stack perspective. This procedure byte is not + // notified to application layer. + if (sw1 === 0x6C) { + // Use the previous command header with length as second procedure + // byte (SW2) as received and repeat the procedure. + + // Recursive! and Pass empty response '' as args, since '0x6C' + // procedure does not have to deal with appended responses. + this._doIccExchangeAPDU(channel, cla, ins, p1, p2, + sw2, data, "", callback); + } else if (sw1 === 0x61) { + // Since the terminal waited for a second procedure byte and + // received it (sw2), send a GET RESPONSE command header to the UICC + // with a maximum length of 'XX', where 'XX' is the value of the + // second procedure byte (SW2). + + let claWithChannel = this._setChannelToCLAByte(SE.CLA_GET_RESPONSE, + channel); + + // Recursive, with GET RESPONSE bytes and '0x61' procedure IS interested + // in appended responses. Pass appended response and note that p3=sw2. + this._doIccExchangeAPDU(channel, claWithChannel, SE.INS_GET_RESPONSE, + 0x00, 0x00, sw2, null, + (response ? response + appendResp : appendResp), + callback); + } else if (callback) { + callback.notifyExchangeAPDUResponse(sw1, sw2, response); + } + }, + + notifyError: (reason) => { + debug("Failed to trasmit C-APDU over the channel # : " + channel + + ", Rejected with Reason : " + reason); + if (callback) { + callback.notifyError(reason); + } + } + }); + }, + + /** + * nsISecureElementConnector interface methods. + */ + + /** + * Opens a channel on a default clientId + */ + openChannel: function(aid, callback) { + if (!this._isPresent) { + callback.notifyError(SE.ERROR_NOTPRESENT); + return; + } + + // TODO: Bug 1118106: Handle Resource management / leaks by persisting + // the newly opened channel in some persistent storage so that when this + // module gets restarted (say after opening a channel) in the event of + // some erroneous conditions such as gecko restart /, crash it can read + // the persistent storage to check if there are any held resources + // (opened channels) and close them. + let icc = iccService.getIccByServiceId(PREFERRED_UICC_CLIENTID); + icc.iccOpenChannel(aid, { + notifyOpenChannelSuccess: (channel) => { + this._doGetOpenResponse(channel, 0x00, function(result) { + if (callback) { + callback.notifyOpenChannelSuccess(channel, result.response); + } + }); + }, + + notifyError: (reason) => { + debug("Failed to open the channel to AID : " + aid + + ", Rejected with Reason : " + reason); + if (callback) { + callback.notifyError(reason); + } + } + }); + }, + + /** + * Transmit the C-APDU (command) on default clientId. + */ + exchangeAPDU: function(channel, cla, ins, p1, p2, data, le, callback) { + if (!this._isPresent) { + callback.notifyError(SE.ERROR_NOTPRESENT); + return; + } + + if (data && data.length % 2 !== 0) { + callback.notifyError("Data should be a hex string with length % 2 === 0"); + return; + } + + cla = this._setChannelToCLAByte(cla, channel); + let lc = data ? data.length / 2 : 0; + let p3 = lc || le; + + if (lc && (le !== -1)) { + data += SEUtils.byteArrayToHexString([le]); + } + + // Pass empty response '' as args as we are not interested in appended + // responses yet! + debug("exchangeAPDU on Channel # " + channel); + this._doIccExchangeAPDU(channel, cla, ins, p1, p2, p3, data, "", + callback); + }, + + /** + * Closes the channel on default clientId. + */ + closeChannel: function(channel, callback) { + if (!this._isPresent) { + callback.notifyError(SE.ERROR_NOTPRESENT); + return; + } + + let icc = iccService.getIccByServiceId(PREFERRED_UICC_CLIENTID); + icc.iccCloseChannel(channel, { + notifyCloseChannelSuccess: function() { + debug("closeChannel successfully closed the channel # : " + channel); + if (callback) { + callback.notifyCloseChannelSuccess(); + } + }, + + notifyError: function(reason) { + debug("Failed to close the channel # : " + channel + + ", Rejected with Reason : " + reason); + if (callback) { + callback.notifyError(reason); + } + } + }); + }, + + registerListener: function(listener) { + if (this._SEListeners.indexOf(listener) !== -1) { + throw Cr.NS_ERROR_UNEXPECTED; + } + + this._SEListeners.push(listener); + // immediately notify listener about the current state + listener.notifySEPresenceChanged(SE.TYPE_UICC, this._isPresent); + }, + + unregisterListener: function(listener) { + let idx = this._SEListeners.indexOf(listener); + if (idx !== -1) { + this._SEListeners.splice(idx, 1); + } + }, + + /** + * nsIIccListener interface methods. + */ + notifyStkCommand: function() {}, + + notifyStkSessionEnd: function() {}, + + notifyIccInfoChanged: function() {}, + + notifyCardStateChanged: function() { + debug("Card state changed, updating UICC presence."); + this._updatePresenceState(); + }, + + /** + * nsIObserver interface methods. + */ + + observe: function(subject, topic, data) { + if (topic === NS_XPCOM_SHUTDOWN_OBSERVER_ID) { + this._shutdown(); + } + } +}; + +this.NSGetFactory = XPCOMUtils.generateNSGetFactory([UiccConnector]); |