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Diffstat (limited to 'toolkit/mozapps/extensions/GMPUtils.jsm')
| -rw-r--r-- | toolkit/mozapps/extensions/GMPUtils.jsm | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/GMPUtils.jsm b/toolkit/mozapps/extensions/GMPUtils.jsm new file mode 100644 index 000000000..9e41a7a61 --- /dev/null +++ b/toolkit/mozapps/extensions/GMPUtils.jsm @@ -0,0 +1,208 @@ +/* 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", + "WIDEVINE_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 WIDEVINE_ID = "gmp-widevinecdm"; +const GMP_PLUGIN_IDS = [ OPEN_H264_ID, EME_ADOBE_ID, WIDEVINE_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 (this._is32bitModeMacOS()) { + // GMPs are hidden on MacOS when running in 32 bit mode. + // See bug 1291537. + return true; + } + if (!aPlugin.isEME) { + return false; + } + + if (!this._isPluginSupported(aPlugin) || + !this._isPluginVisible(aPlugin)) { + return true; + } + + if (!GMPPrefs.get(GMPPrefs.KEY_EME_ENABLED, true)) { + 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 (this._isPluginForceSupported(aPlugin)) { + return true; + } + if (aPlugin.id == EME_ADOBE_ID) { + // Windows Vista and later only supported by Adobe EME. + return AppConstants.isPlatformAndVersionAtLeast("win", "6"); + } else if (aPlugin.id == WIDEVINE_ID) { + // The Widevine plugin is available for Windows versions Vista and later, + // Mac OSX, and Linux. + return AppConstants.isPlatformAndVersionAtLeast("win", "6") || + AppConstants.platform == "macosx" || + AppConstants.platform == "linux"; + } + + return true; + }, + + _is32bitModeMacOS: function() { + if (AppConstants.platform != "macosx") { + return false; + } + return Services.appinfo.XPCOMABI.split("-")[0] == "x86"; + }, + + /** + * Checks whether or not a given plugin is visible in the addons manager + * UI and the "enable DRM" notification box. This can be used to test + * plugins that aren't yet turned on in the mozconfig. + * @param aPlugin + * The plugin to check. + */ + _isPluginVisible: function(aPlugin) { + return GMPPrefs.get(GMPPrefs.KEY_PLUGIN_VISIBLE, false, aPlugin.id); + }, + + /** + * Checks whether or not a given plugin is forced-supported. This is used + * in automated tests to override the checks that prevent GMPs running on an + * unsupported platform. + * @param aPlugin + * The plugin to check. + */ + _isPluginForceSupported: function(aPlugin) { + return GMPPrefs.get(GMPPrefs.KEY_PLUGIN_FORCE_SUPPORTED, false, aPlugin.id); + }, +}; + +/** + * 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_VISIBLE: "media.{0}.visible", + KEY_PLUGIN_ABI: "media.{0}.abi", + KEY_PLUGIN_FORCE_SUPPORTED: "media.{0}.forceSupported", + 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_UPDATE_ENABLED: "media.gmp-manager.updateEnabled", + 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 || ""); + }, +}; |