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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* 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
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
AppInfo: "chrome://remote/content/shared/AppInfo.sys.mjs",
});
import { RemotePageChild } from "resource://gre/actors/RemotePageChild.sys.mjs";
export class NetErrorChild extends RemotePageChild {
actorCreated() {
super.actorCreated();
// If you add a new function, remember to add it to RemotePageAccessManager.sys.mjs
// to allow content-privileged about:neterror or about:certerror to use it.
const exportableFunctions = [
"RPMGetAppBuildID",
"RPMGetInnerMostURI",
"RPMAddToHistogram",
"RPMRecordGleanEvent",
"RPMCheckAlternateHostAvailable",
"RPMGetHttpResponseHeader",
"RPMIsTRROnlyFailure",
"RPMIsFirefox",
"RPMIsNativeFallbackFailure",
"RPMOpenPreferences",
"RPMGetTRRSkipReason",
"RPMGetTRRDomain",
"RPMIsSiteSpecificTRRError",
"RPMSetTRRDisabledLoadFlags",
"RPMGetCurrentTRRMode",
];
this.exportFunctions(exportableFunctions);
}
getFailedCertChain(docShell) {
let securityInfo =
docShell.failedChannel && docShell.failedChannel.securityInfo;
if (!securityInfo) {
return [];
}
return securityInfo.failedCertChain.map(cert => cert.getBase64DERString());
}
handleEvent(aEvent) {
// Documents have a null ownerDocument.
let doc = aEvent.originalTarget.ownerDocument || aEvent.originalTarget;
switch (aEvent.type) {
case "click":
let elem = aEvent.originalTarget;
if (elem.id == "viewCertificate") {
// Call through the superclass to avoid the security check.
this.sendAsyncMessage("Browser:CertExceptionError", {
location: doc.location.href,
elementId: elem.id,
failedCertChain: this.getFailedCertChain(doc.defaultView.docShell),
});
}
break;
}
}
RPMGetInnerMostURI(uriString) {
let uri = Services.io.newURI(uriString);
if (uri instanceof Ci.nsINestedURI) {
uri = uri.QueryInterface(Ci.nsINestedURI).innermostURI;
}
return uri.spec;
}
RPMGetAppBuildID() {
return Services.appinfo.appBuildID;
}
RPMAddToHistogram(histID, bin) {
Services.telemetry.getHistogramById(histID).add(bin);
}
RPMRecordGleanEvent(category, name, extra) {
Glean[category]?.[name]?.record(extra);
}
RPMCheckAlternateHostAvailable() {
const host = this.contentWindow.location.host.trim();
// Adapted from UrlbarUtils::looksLikeSingleWordHost
const REGEXP_SINGLE_WORD = /^[^\s@:/?#]+(:\d+)?$/;
if (!REGEXP_SINGLE_WORD.test(host)) {
return;
}
let info = Services.uriFixup.forceHttpFixup(
this.contentWindow.location.href
);
if (!info.fixupCreatedAlternateURI && !info.fixupChangedProtocol) {
return;
}
let { displayHost, displaySpec, pathQueryRef } = info.fixedURI;
if (pathQueryRef.endsWith("/")) {
pathQueryRef = pathQueryRef.slice(0, pathQueryRef.length - 1);
}
let weakDoc = Cu.getWeakReference(this.contentWindow.document);
let onLookupCompleteListener = {
onLookupComplete(request, record, status) {
let doc = weakDoc.get();
if (!doc || !Components.isSuccessCode(status)) {
return;
}
let link = doc.createElement("a");
link.href = displaySpec;
link.setAttribute("data-l10n-name", "website");
let span = doc.createElement("span");
span.appendChild(link);
doc.l10n.setAttributes(span, "neterror-dns-not-found-with-suggestion", {
hostAndPath: displayHost + pathQueryRef,
});
const shortDesc = doc.getElementById("errorShortDesc");
shortDesc.textContent += " ";
shortDesc.appendChild(span);
},
};
Services.uriFixup.checkHost(
info.fixedURI,
onLookupCompleteListener,
this.document.nodePrincipal.originAttributes
);
}
// Get the header from the http response of the failed channel. This function
// is used in the 'about:neterror' page.
RPMGetHttpResponseHeader(responseHeader) {
let channel = this.contentWindow.docShell.failedChannel;
if (!channel) {
return "";
}
let httpChannel = channel.QueryInterface(Ci.nsIHttpChannel);
if (!httpChannel) {
return "";
}
try {
return httpChannel.getResponseHeader(responseHeader);
} catch (e) {}
return "";
}
RPMIsTRROnlyFailure() {
// We will only show this in Firefox because the options may direct users to settings only available on Firefox Desktop
let channel = this.contentWindow?.docShell?.failedChannel?.QueryInterface(
Ci.nsIHttpChannelInternal
);
if (!channel) {
return false;
}
return channel.effectiveTRRMode == Ci.nsIRequest.TRR_ONLY_MODE;
}
RPMIsFirefox() {
return lazy.AppInfo.isFirefox;
}
_getTRRSkipReason() {
let channel = this.contentWindow?.docShell?.failedChannel?.QueryInterface(
Ci.nsIHttpChannelInternal
);
return channel?.trrSkipReason ?? Ci.nsITRRSkipReason.TRR_UNSET;
}
RPMIsNativeFallbackFailure() {
if (!this.contentWindow?.navigator.onLine) {
return false;
}
let skipReason = this._getTRRSkipReason();
if (
Services.dns.currentTrrMode === Ci.nsIDNSService.MODE_TRRFIRST &&
skipReason === Ci.nsITRRSkipReason.TRR_NOT_CONFIRMED
) {
return true;
}
const warningReasons = new Set([
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_GOOGLE_SAFESEARCH,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_YOUTUBE_SAFESEARCH,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_ZSCALER_CANARY,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_CANARY,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_MODIFIED_ROOTS,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_PARENTAL_CONTROLS,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_THIRD_PARTY_ROOTS,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_ENTERPRISE_POLICY,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_VPN,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_PROXY,
Ci.nsITRRSkipReason.TRR_HEURISTIC_TRIPPED_NRPT,
]);
return (
Services.dns.currentTrrMode === Ci.nsIDNSService.MODE_NATIVEONLY &&
warningReasons.has(skipReason)
);
}
RPMGetTRRSkipReason() {
let skipReason = this._getTRRSkipReason();
return Services.dns.getTRRSkipReasonName(skipReason);
}
RPMGetTRRDomain() {
return Services.dns.trrDomain;
}
RPMIsSiteSpecificTRRError() {
let skipReason = this._getTRRSkipReason();
switch (skipReason) {
case Ci.nsITRRSkipReason.TRR_NXDOMAIN:
case Ci.nsITRRSkipReason.TRR_RCODE_FAIL:
case Ci.nsITRRSkipReason.TRR_NO_ANSWERS:
return true;
}
return false;
}
RPMSetTRRDisabledLoadFlags() {
this.contentWindow.docShell.browsingContext.defaultLoadFlags |=
Ci.nsIRequest.LOAD_TRR_DISABLED_MODE;
}
}