b2g/components/RecoveryService.js

   1 /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
   2 /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6 "use strict";
   7
   8 const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
   9
  10 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
  11 Cu.import("resource://gre/modules/ctypes.jsm");
  12
  13 const RECOVERYSERVICE_CID = Components.ID("{b3caca5d-0bb0-48c6-912b-6be6cbf08832}");
  14 const RECOVERYSERVICE_CONTRACTID = "@mozilla.org/recovery-service;1";
  15
  16 function log(msg) {
  17   dump("-*- RecoveryService: " + msg + "\n");
  18 }
  19
  20 #ifdef MOZ_WIDGET_GONK
  21 let librecovery = (function() {
  22   let library;
  23   try {
  24     library = ctypes.open("librecovery.so");
  25   } catch (e) {
  26     log("Unable to open librecovery.so");
  27     throw Cr.NS_ERROR_FAILURE;
  28   }
  29   let FotaUpdateStatus = new ctypes.StructType("FotaUpdateStatus", [
  30                                                 { result: ctypes.int },
  31                                                 { updatePath: ctypes.char.ptr }
  32                                               ]);
  33
  34   return {
  35     factoryReset:        library.declare("factoryReset",
  36                                          ctypes.default_abi,
  37                                          ctypes.int),
  38     installFotaUpdate:   library.declare("installFotaUpdate",
  39                                          ctypes.default_abi,
  40                                          ctypes.int,
  41                                          ctypes.char.ptr,
  42                                          ctypes.int),
  43
  44     FotaUpdateStatus:    FotaUpdateStatus,
  45     getFotaUpdateStatus: library.declare("getFotaUpdateStatus",
  46                                          ctypes.default_abi,
  47                                          ctypes.int,
  48                                          FotaUpdateStatus.ptr)
  49   };
  50 })();
  51
  52 const gFactoryResetFile = "__post_reset_cmd__";
  53
  54 #endif
  55
  56 function RecoveryService() {}
  57
  58 RecoveryService.prototype = {
  59   classID: RECOVERYSERVICE_CID,
  60   QueryInterface: XPCOMUtils.generateQI([Ci.nsIRecoveryService]),
  61   classInfo: XPCOMUtils.generateCI({
  62     classID: RECOVERYSERVICE_CID,
  63     contractID: RECOVERYSERVICE_CONTRACTID,
  64     interfaces: [Ci.nsIRecoveryService],
  65     classDescription: "B2G Recovery Service"
  66   }),
  67
  68   factoryReset: function RS_factoryReset(reason) {
  69 #ifdef MOZ_WIDGET_GONK
  70     function doReset() {
  71       // If this succeeds, then the device reboots and this never returns
  72       if (librecovery.factoryReset() != 0) {
  73         log("Error: Factory reset failed. Trying again after clearing cache.");
  74       }
  75       let cache = Cc["@mozilla.org/netwerk/cache-storage-service;1"]
  76                     .getService(Ci.nsICacheStorageService);
  77       cache.clear();
  78       if (librecovery.factoryReset() != 0) {
  79         log("Error: Factory reset failed again");
  80       }
  81     }
  82
  83     log("factoryReset " + reason);
  84     if (reason == "wipe") {
  85       let volumeService = Cc["@mozilla.org/telephony/volume-service;1"]
  86                           .getService(Ci.nsIVolumeService);
  87       let volNames = volumeService.getVolumeNames();
  88       log("Found " + volNames.length + " volumes");
  89       let text = "";
  90       for (let i = 0; i < volNames.length; i++) {
  91         let name = volNames.queryElementAt(i, Ci.nsISupportsString);
  92         let volume = volumeService.getVolumeByName(name.data);
  93         log("Got volume: " + name.data + " at " + volume.mountPoint);
  94         text += "wipe " + volume.mountPoint + "\n";
  95       }
  96
  97       Cu.import("resource://gre/modules/osfile.jsm");
  98       let dir = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
  99       dir.initWithPath("/persist");
 100       var postResetFile = dir.exists() ?
 101                           OS.Path.join("/persist", gFactoryResetFile):
 102                           OS.Path.join("/cache", gFactoryResetFile);
 103       let encoder = new TextEncoder();
 104       let array = encoder.encode(text);
 105       let promise = OS.File.writeAtomic(postResetFile, array,
 106                                         { tmpPath: postResetFile + ".tmp" });
 107
 108       promise.then(doReset, function onError(error) {
 109         log("Error: " + error);
 110       });
 111     } else {
 112       doReset();
 113     }
 114 #endif
 115     throw Cr.NS_ERROR_FAILURE;
 116   },
 117
 118   installFotaUpdate: function RS_installFotaUpdate(updatePath) {
 119 #ifdef MOZ_WIDGET_GONK
 120     // If this succeeds, then the device reboots and this never returns
 121     if (librecovery.installFotaUpdate(updatePath, updatePath.length) != 0) {
 122       log("Error: FOTA install failed. Trying again after clearing cache.");
 123     }
 124     var cache = Cc["@mozilla.org/netwerk/cache-storage-service;1"].getService(Ci.nsICacheStorageService);
 125     cache.clear();
 126     if (librecovery.installFotaUpdate(updatePath, updatePath.length) != 0) {
 127       log("Error: FOTA install failed again");
 128     }
 129 #endif
 130     throw Cr.NS_ERROR_FAILURE;
 131   },
 132
 133   getFotaUpdateStatus: function RS_getFotaUpdateStatus() {
 134     let status =  Ci.nsIRecoveryService.FOTA_UPDATE_UNKNOWN;
 135 #ifdef MOZ_WIDGET_GONK
 136     let cStatus = librecovery.FotaUpdateStatus();
 137
 138     if (librecovery.getFotaUpdateStatus(cStatus.address()) == 0) {
 139       status = cStatus.result;
 140     }
 141
 142 #endif
 143     return status;
 144   }
 145 };
 146
 147 this.NSGetFactory = XPCOMUtils.generateNSGetFactory([RecoveryService]);