/* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ "use strict"; const {classes: Cc, interfaces: Ci, results: Cr, utils: Cu, manager: Cm} = Components; this.EXPORTED_SYMBOLS = [ "EME_ADOBE_ID", "GMP_PLUGIN_IDS", "GMPPrefs", "GMPUtils", "OPEN_H264_ID" ]; Cu.import("resource://gre/modules/Preferences.jsm"); Cu.import("resource://gre/modules/Services.jsm"); Cu.import("resource://gre/modules/AppConstants.jsm"); // GMP IDs const OPEN_H264_ID = "gmp-gmpopenh264"; const EME_ADOBE_ID = "gmp-eme-adobe"; const GMP_PLUGIN_IDS = [ OPEN_H264_ID, EME_ADOBE_ID ]; var GMPPluginUnsupportedReason = { NOT_WINDOWS: 1, WINDOWS_VERSION: 2, }; var GMPPluginHiddenReason = { UNSUPPORTED: 1, EME_DISABLED: 2, }; this.GMPUtils = { /** * Checks whether or not a given plugin is hidden. Hidden plugins are neither * downloaded nor displayed in the addons manager. * @param aPlugin * The plugin to check. */ isPluginHidden: function(aPlugin) { if (!aPlugin.isEME) { return false; } if (!this._isPluginSupported(aPlugin) && !this._isPluginForcedVisible(aPlugin)) { this.maybeReportTelemetry(aPlugin.id, "VIDEO_EME_ADOBE_HIDDEN_REASON", GMPPluginHiddenReason.UNSUPPORTED); return true; } if (!GMPPrefs.get(GMPPrefs.KEY_EME_ENABLED, true)) { this.maybeReportTelemetry(aPlugin.id, "VIDEO_EME_ADOBE_HIDDEN_REASON", GMPPluginHiddenReason.EME_DISABLED); return true; } return false; }, /** * Checks whether or not a given plugin is supported by the current OS. * @param aPlugin * The plugin to check. */ _isPluginSupported: function(aPlugin) { if (aPlugin.id != EME_ADOBE_ID) { // Only checking Adobe EME at the moment. return true; } if (Services.appinfo.OS != "WINNT") { // Non-Windows OSes currently unsupported. this.maybeReportTelemetry(aPlugin.id, "VIDEO_EME_ADOBE_UNSUPPORTED_REASON", GMPPluginUnsupportedReason.NOT_WINDOWS); return false; } if (Services.sysinfo.getPropertyAsInt32("version") < 6) { // Windows versions before Vista are unsupported. this.maybeReportTelemetry(aPlugin.id, "VIDEO_EME_ADOBE_UNSUPPORTED_REASON", GMPPluginUnsupportedReason.WINDOWS_VERSION); return false; } return true; }, /** * Checks whether or not a given plugin is forced visible. This can be used * to test plugins that aren't yet supported by default on a particular OS. * @param aPlugin * The plugin to check. */ _isPluginForcedVisible: function(aPlugin) { return GMPPrefs.get(GMPPrefs.KEY_PLUGIN_FORCEVISIBLE, false, aPlugin.id); }, /** * Report telemetry value, but only for Adobe CDM and only once per key * per session. */ maybeReportTelemetry: function(aPluginId, key, value) { if (aPluginId != EME_ADOBE_ID) { // Only report for Adobe CDM. return; } if (!this.reportedKeys) { this.reportedKeys = []; } if (this.reportedKeys.indexOf(key) >= 0) { // Only report each key once per session. return; } this.reportedKeys.push(key); let hist = Services.telemetry.getHistogramById(key); if (hist) { hist.add(value); } }, }; /** * Manages preferences for GMP addons */ this.GMPPrefs = { KEY_EME_ENABLED: "media.eme.enabled", KEY_PLUGIN_ENABLED: "media.{0}.enabled", KEY_PLUGIN_LAST_UPDATE: "media.{0}.lastUpdate", KEY_PLUGIN_VERSION: "media.{0}.version", KEY_PLUGIN_AUTOUPDATE: "media.{0}.autoupdate", KEY_PLUGIN_FORCEVISIBLE: "media.{0}.forcevisible", KEY_PLUGIN_TRIAL_CREATE: "media.{0}.trial-create", KEY_PLUGIN_ABI: "media.{0}.abi", KEY_URL: "media.gmp-manager.url", KEY_URL_OVERRIDE: "media.gmp-manager.url.override", KEY_CERT_CHECKATTRS: "media.gmp-manager.cert.checkAttributes", KEY_CERT_REQUIREBUILTIN: "media.gmp-manager.cert.requireBuiltIn", KEY_UPDATE_LAST_CHECK: "media.gmp-manager.lastCheck", KEY_SECONDS_BETWEEN_CHECKS: "media.gmp-manager.secondsBetweenChecks", KEY_APP_DISTRIBUTION: "distribution.id", KEY_APP_DISTRIBUTION_VERSION: "distribution.version", KEY_BUILDID: "media.gmp-manager.buildID", KEY_CERTS_BRANCH: "media.gmp-manager.certs.", KEY_PROVIDER_ENABLED: "media.gmp-provider.enabled", KEY_LOG_BASE: "media.gmp.log.", KEY_LOGGING_LEVEL: "media.gmp.log.level", KEY_LOGGING_DUMP: "media.gmp.log.dump", /** * Obtains the specified preference in relation to the specified plugin. * @param aKey The preference key value to use. * @param aDefaultValue The default value if no preference exists. * @param aPlugin The plugin to scope the preference to. * @return The obtained preference value, or the defaultValue if none exists. */ get: function(aKey, aDefaultValue, aPlugin) { if (aKey === this.KEY_APP_DISTRIBUTION || aKey === this.KEY_APP_DISTRIBUTION_VERSION) { let prefValue = "default"; try { prefValue = Services.prefs.getDefaultBranch(null).getCharPref(aKey); } catch (e) { // use default when pref not found } return prefValue; } return Preferences.get(this.getPrefKey(aKey, aPlugin), aDefaultValue); }, /** * Sets the specified preference in relation to the specified plugin. * @param aKey The preference key value to use. * @param aVal The value to set. * @param aPlugin The plugin to scope the preference to. */ set: function(aKey, aVal, aPlugin) { Preferences.set(this.getPrefKey(aKey, aPlugin), aVal); }, /** * Checks whether or not the specified preference is set in relation to the * specified plugin. * @param aKey The preference key value to use. * @param aPlugin The plugin to scope the preference to. * @return true if the preference is set, false otherwise. */ isSet: function(aKey, aPlugin) { return Preferences.isSet(this.getPrefKey(aKey, aPlugin)); }, /** * Resets the specified preference in relation to the specified plugin to its * default. * @param aKey The preference key value to use. * @param aPlugin The plugin to scope the preference to. */ reset: function(aKey, aPlugin) { Preferences.reset(this.getPrefKey(aKey, aPlugin)); }, /** * Scopes the specified preference key to the specified plugin. * @param aKey The preference key value to use. * @param aPlugin The plugin to scope the preference to. * @return A preference key scoped to the specified plugin. */ getPrefKey: function(aKey, aPlugin) { return aKey.replace("{0}", aPlugin || ""); }, };