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"use strict";
const override = Cc["@mozilla.org/network/native-dns-override;1"].getService(
Ci.nsINativeDNSResolverOverride
);
const mainThread = Services.tm.currentThread;
function makeListenerBlock(next) {
return {
onLookupComplete(inRequest, inRecord, inStatus) {
Assert.ok(!Components.isSuccessCode(inStatus));
next();
},
};
}
function makeListenerDontBlock(next, expectedAnswer) {
return {
onLookupComplete(inRequest, inRecord, inStatus) {
Assert.equal(inStatus, Cr.NS_OK);
inRecord.QueryInterface(Ci.nsIDNSAddrRecord);
var answer = inRecord.getNextAddrAsString();
if (expectedAnswer) {
Assert.equal(answer, expectedAnswer);
} else {
Assert.ok(answer == "127.0.0.1" || answer == "::1");
}
next();
},
};
}
function do_test({ dnsDisabled, mustBlock, testDomain, expectedAnswer }) {
return new Promise(resolve => {
Services.prefs.setBoolPref("network.dns.disabled", dnsDisabled);
try {
Services.dns.asyncResolve(
testDomain,
Ci.nsIDNSService.RESOLVE_TYPE_DEFAULT,
0,
null, // resolverInfo
mustBlock
? makeListenerBlock(resolve)
: makeListenerDontBlock(resolve, expectedAnswer),
mainThread,
{} // Default origin attributes
);
} catch (e) {
Assert.ok(mustBlock === true);
resolve();
}
});
}
function setup() {
override.addIPOverride("foo.bar", "127.0.0.1");
registerCleanupFunction(function() {
override.clearOverrides();
Services.prefs.clearUserPref("network.dns.disabled");
});
}
setup();
// IP literals should be resolved even if dns is disabled
add_task(async function testIPLiteral() {
return do_test({
dnsDisabled: true,
mustBlock: false,
testDomain: "0x01010101",
expectedAnswer: "1.1.1.1",
});
});
add_task(async function testBlocked() {
return do_test({
dnsDisabled: true,
mustBlock: true,
testDomain: "foo.bar",
});
});
add_task(async function testNotBlocked() {
return do_test({
dnsDisabled: false,
mustBlock: false,
testDomain: "foo.bar",
});
});
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