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Quelle EncryptedMediaParent.sys.mjs
Sprache: unbekannt
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/* vim: set ts=2 sw=2 sts=2 et tw=80: */
/* 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/. */
const lazy = {};
ChromeUtils.defineLazyGetter(lazy, "gBrandBundle", function () {
return Services.strings.createBundle(
"chrome://branding/locale/brand.properties"
);
});
ChromeUtils.defineLazyGetter(lazy, "gNavigatorBundle", function () {
return Services.strings.createBundle(
"chrome://browser/locale/browser.properties"
);
});
ChromeUtils.defineLazyGetter(lazy, "gFluentStrings", function () {
return new Localization(["branding/brand.ftl", "browser/browser.ftl"], true);
});
export class EncryptedMediaParent extends JSWindowActorParent {
isUiEnabled() {
return Services.prefs.getBoolPref("browser.eme.ui.enabled");
}
ensureEMEEnabled(aBrowser, aKeySystem) {
Services.prefs.setBoolPref("media.eme.enabled", true);
if (
aKeySystem &&
aKeySystem == "com.widevine.alpha" &&
Services.prefs.getPrefType("media.gmp-widevinecdm.enabled") &&
!Services.prefs.getBoolPref("media.gmp-widevinecdm.enabled")
) {
Services.prefs.setBoolPref("media.gmp-widevinecdm.enabled", true);
}
aBrowser.reload();
}
isKeySystemVisible(aKeySystem) {
if (!aKeySystem) {
return false;
}
if (
aKeySystem == "com.widevine.alpha" &&
Services.prefs.getPrefType("media.gmp-widevinecdm.visible")
) {
return Services.prefs.getBoolPref("media.gmp-widevinecdm.visible");
}
return true;
}
getMessageWithBrandName(aNotificationId) {
let msgId = "emeNotifications." + aNotificationId + ".message";
return lazy.gNavigatorBundle.formatStringFromName(msgId, [
lazy.gBrandBundle.GetStringFromName("brandShortName"),
]);
}
async receiveMessage(aMessage) {
if (!this.handledMessages) {
this.handledMessages = new Set();
}
// The top level browsing context's embedding element should be a xul browser element.
let browser = this.browsingContext.top.embedderElement;
if (!browser) {
// We don't have a browser so bail!
return;
}
let parsedData;
try {
parsedData = JSON.parse(aMessage.data);
} catch (ex) {
console.error("Malformed EME video message with data: ", aMessage.data);
return;
}
let { status, keySystem } = parsedData;
if (this.handledMessages.has(status)) {
return;
}
// First, see if we need to do updates. We don't need to do anything for
// hidden keysystems:
if (!this.isKeySystemVisible(keySystem)) {
return;
}
if (status == "cdm-not-installed") {
Services.obs.notifyObservers(browser, "EMEVideo:CDMMissing");
}
// Don't need to show UI if disabled.
if (!this.isUiEnabled()) {
return;
}
let notificationId;
let buttonCallback;
let supportPage;
// Notification message can be either a string or a DOM fragment.
let notificationMessage;
switch (status) {
case "available":
case "cdm-created":
// Only show the chain icon for proprietary CDMs. Clearkey is not one.
if (keySystem != "org.w3.clearkey") {
this.showPopupNotificationForSuccess(browser, keySystem);
}
this.reportEMEDecryptionProbe();
// ... and bail!
return;
case "api-disabled":
case "cdm-disabled":
this.handledMessages.add(status);
notificationId = "drmContentDisabled";
buttonCallback = () => {
this.ensureEMEEnabled(browser, keySystem);
};
notificationMessage = lazy.gNavigatorBundle.GetStringFromName(
"emeNotifications.drmContentDisabled.message2"
);
supportPage = "drm-content";
break;
case "cdm-not-installed":
this.handledMessages.add(status);
notificationId = "drmContentCDMInstalling";
notificationMessage = this.getMessageWithBrandName(notificationId);
break;
case "cdm-not-supported":
// Not to pop up user-level notification because they cannot do anything
// about it.
return;
default:
console.error(
new Error(
"Unknown message ('" +
status +
"') dealing with EME key request: " +
aMessage.data
)
);
return;
}
// Now actually create the notification
let notificationBox = browser.getTabBrowser().getNotificationBox(browser);
if (notificationBox.getNotificationWithValue(notificationId)) {
this.handledMessages.delete(status);
return;
}
let buttons = [];
if (supportPage) {
buttons.push({ supportPage });
}
if (buttonCallback) {
let msgPrefix = "emeNotifications." + notificationId + ".";
let manageLabelId = msgPrefix + "button.label";
let manageAccessKeyId = msgPrefix + "button.accesskey";
buttons.push({
label: lazy.gNavigatorBundle.GetStringFromName(manageLabelId),
accessKey: lazy.gNavigatorBundle.GetStringFromName(manageAccessKeyId),
callback: buttonCallback,
});
}
let iconURL = "chrome://browser/skin/drm-icon.svg";
await notificationBox.appendNotification(
notificationId,
{
label: notificationMessage,
image: iconURL,
priority: notificationBox.PRIORITY_INFO_HIGH,
},
buttons
);
this.handledMessages.delete(status);
}
async showPopupNotificationForSuccess(aBrowser) {
// We're playing EME content! Remove any "we can't play because..." messages.
let notificationBox = aBrowser.getTabBrowser().getNotificationBox(aBrowser);
["drmContentDisabled", "drmContentCDMInstalling"].forEach(function (value) {
let notification = notificationBox.getNotificationWithValue(value);
if (notification) {
notificationBox.removeNotification(notification);
}
});
// Don't bother creating it if it's already there:
if (
aBrowser.ownerGlobal.PopupNotifications.getNotification(
"drmContentPlaying",
aBrowser
)
) {
return;
}
let msgPrefix = "eme-notifications-drm-content-playing";
let msgId = msgPrefix;
let manageLabelId = msgPrefix + "-manage";
let manageAccessKeyId = msgPrefix + "-manage-accesskey";
let dismissLabelId = msgPrefix + "-dismiss";
let dismissAccessKeyId = msgPrefix + "-dismiss-accesskey";
let [
message,
manageLabel,
manageAccessKey,
dismissLabel,
dismissAccessKey,
] = await lazy.gFluentStrings.formatValues([
msgId,
manageLabelId,
manageAccessKeyId,
dismissLabelId,
dismissAccessKeyId,
]);
let anchorId = "eme-notification-icon";
let firstPlayPref = "browser.eme.ui.firstContentShown";
let document = aBrowser.ownerDocument;
if (
!Services.prefs.getPrefType(firstPlayPref) ||
!Services.prefs.getBoolPref(firstPlayPref)
) {
document.getElementById(anchorId).setAttribute("firstplay", "true");
Services.prefs.setBoolPref(firstPlayPref, true);
} else {
document.getElementById(anchorId).removeAttribute("firstplay");
}
let mainAction = {
label: manageLabel,
accessKey: manageAccessKey,
callback() {
aBrowser.ownerGlobal.openPreferences("general-drm");
},
dismiss: true,
};
let secondaryActions = [
{
label: dismissLabel,
accessKey: dismissAccessKey,
callback: () => {},
dismiss: true,
},
];
let options = {
dismissed: true,
eventCallback: aTopic => aTopic == "swapping",
learnMoreURL:
Services.urlFormatter.formatURLPref("app.support.baseURL") +
"drm-content",
hideClose: true,
};
aBrowser.ownerGlobal.PopupNotifications.show(
aBrowser,
"drmContentPlaying",
message,
anchorId,
mainAction,
secondaryActions,
options
);
}
async reportEMEDecryptionProbe() {
let hasHardwareDecryption = false;
let hasSoftwareClearlead = false;
let hasHardwareClearlead = false;
let hasHdcp22Plus = false;
let hasWMF = false;
// Get CDM capabilities from the GMP process.
let infos = [];
let cdmInfo = await ChromeUtils.getGMPContentDecryptionModuleInformation();
infos.push(...cdmInfo);
// Get CDM capabilities from the MFCDM process, if exists.
if (ChromeUtils.getWMFContentDecryptionModuleInformation !== undefined) {
hasWMF = true;
cdmInfo = await ChromeUtils.getWMFContentDecryptionModuleInformation();
infos.push(...cdmInfo);
}
for (let info of infos) {
if (info.isHardwareDecryption) {
hasHardwareDecryption = true;
}
if (info.clearlead) {
if (info.isHardwareDecryption) {
hasHardwareClearlead = true;
} else {
hasSoftwareClearlead = true;
}
}
if (info.isHDCP22Compatible) {
hasHdcp22Plus = true;
}
}
Glean.mediadrm.decryption.has_hardware_decryption.set(
hasHardwareDecryption
);
Glean.mediadrm.decryption.has_hardware_clearlead.set(hasHardwareClearlead);
Glean.mediadrm.decryption.has_software_clearlead.set(hasSoftwareClearlead);
Glean.mediadrm.decryption.has_hdcp22_plus.set(hasHdcp22Plus);
Glean.mediadrm.decryption.has_wmf.set(hasWMF);
}
}
[ Dauer der Verarbeitung: 0.6 Sekunden
(vorverarbeitet)
]
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2026-03-28
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