[TychoAM] Fix GMP* so that EME works in Basilisk

Also, keep WebExAM working for the moment

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 || "");
+  },
+};