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index.js
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var __defProp = Object.defineProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true,
writable: true, value }) : obj[key] = value;
var __publicField = (obj, key, value) => __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
// src/util/array.ts
function concat(...arrs) {
if (arrs.length === 1 && arrs[0] instanceof Uint8Array) return arrs[0];
const length = arrs.reduce((memo, arr) => memo + arr.length, 0);
const result = new Uint8Array(length);
let offset = 0;
for (const arr of arrs) {
result.set(arr, offset);
offset += arr.length;
}
return result;
}
function equal(a, b) {
const aLength = a.length;
if (aLength !== b.length) return false;
for (let i = 0; i < aLength; i++) if (a[i] !== b[i]) return false;
return true;
}
var GrowableData = class {
constructor() {
__publicField(this, "length");
__publicField(this, "data");
this.length = 0;
this.data = new Uint8Array();
}
append(newData) {
const newDataLength = newData.length;
if (this.length + newDataLength > this.data.length) {
const prevData = this.data;
this.data = new Uint8Array(this.length * 2 + newDataLength);
this.data.set(prevData);
}
this.data.set(newData, this.length);
this.length += newData.length;
}
getData() {
return this.data.subarray(0, this.length);
}
};
// src/presentation/appearance.ts
var indentChars = "\xB7\xB7 ";
// src/util/bytes.ts
var txtEnc = new TextEncoder();
var txtDec = new TextDecoder();
var Bytes = class {
constructor(arrayOrMaxBytes) {
__publicField(this, "offset");
__publicField(this, "dataView");
__publicField(this, "data");
__publicField(this, "comments");
__publicField(this, "indents");
__publicField(this, "indent");
this.offset = 0;
this.data = typeof arrayOrMaxBytes === "number" ? new Uint8Array(arrayOrMaxBytes) : arrayOrMaxBytes;
this.dataView = new DataView(this.data.buffer, this.data.byteOffset, this.data.byteLength);
this.comments = {};
this.indents = {};
this.indent = 0;
}
extend(arrayOrMaxBytes) {
const newData = typeof arrayOrMaxBytes === "number" ? new Uint8Array(arrayOrMaxBytes) : arrayOrMaxBytes;
this.data = concat(this.data, newData);
this.dataView = new DataView(this.data.buffer, this.data.byteOffset, this.data.byteLength);
}
remaining() {
return this.data.length - this.offset;
}
subarray(length) {
return this.data.subarray(this.offset, this.offset += length);
}
skip(length, comment) {
this.offset += length;
if (comment) this.comment(comment);
return this;
}
comment(s, offset = this.offset) {
if (true) throw new Error("No comments should be emitted outside of chatty mode");
const existing = this.comments[offset];
const result = (existing === void 0 ? "" : existing + " ") + s;
this.comments[offset] = result;
return this;
}
lengthComment(length, comment, inclusive = false) {
return length === 1 ? `${length} byte${comment ? ` of ${comment}` : ""} ${inclusive ? "starts here" : "fol\
lows"}` : `${length === 0 ? "no" : length} bytes${comment ? ` of ${comment}` : ""} ${inclusive ? "start here" :
"follow"}`;
}
// reading
readBytes(length) {
return this.data.slice(this.offset, this.offset += length);
}
readUTF8String(length) {
const bytes = this.subarray(length);
const s = txtDec.decode(bytes);
return s;
}
readUTF8StringNullTerminated() {
let endOffset = this.offset;
while (this.data[endOffset] !== 0) endOffset++;
const str = this.readUTF8String(endOffset - this.offset);
this.expectUint8(0, "end of string");
return str;
}
readUint8(comment) {
const result = this.dataView.getUint8(this.offset);
this.offset += 1;
if (0) this.comment(comment.replace(/%/g, String(result)));
return result;
}
readUint16(comment) {
const result = this.dataView.getUint16(this.offset);
this.offset += 2;
if (0) this.comment(comment.replace(/%/g, String(result)));
return result;
}
readUint24(comment) {
const msb = this.readUint8();
const lsbs = this.readUint16();
const result = (msb << 16) + lsbs;
if (0) this.comment(comment.replace(/%/g, String(result)));
return result;
}
readUint32(comment) {
const result = this.dataView.getUint32(this.offset);
this.offset += 4;
if (0) this.comment(comment.replace(/%/g, String(result)));
return result;
}
expectBytes(expected, comment) {
const actual = this.readBytes(expected.length);
if (0) this.comment(comment);
if (!equal(actual, expected)) throw new Error(`Unexpected bytes`);
}
expectUint8(expectedValue, comment) {
const actualValue = this.readUint8();
if (0) this.comment(comment);
if (actualValue !== expectedValue) throw new Error(`Expected ${expectedValue}, got ${actualValue}`);
}
expectUint16(expectedValue, comment) {
const actualValue = this.readUint16();
if (0) this.comment(comment);
if (actualValue !== expectedValue) throw new Error(`Expected ${expectedValue}, got ${actualValue}`);
}
expectUint24(expectedValue, comment) {
const actualValue = this.readUint24();
if (0) this.comment(comment);
if (actualValue !== expectedValue) throw new Error(`Expected ${expectedValue}, got ${actualValue}`);
}
expectUint32(expectedValue, comment) {
const actualValue = this.readUint32();
if (0) this.comment(comment);
if (actualValue !== expectedValue) throw new Error(`Expected ${expectedValue}, got ${actualValue}`);
}
expectLength(length, indentDelta = 1) {
const startOffset = this.offset;
const endOffset = startOffset + length;
if (endOffset > this.data.length) throw new Error("Expected length exceeds remaining data length");
this.indent += indentDelta;
this.indents[startOffset] = this.indent;
return [
() => {
this.indent -= indentDelta;
this.indents[this.offset] = this.indent;
if (this.offset !== endOffset) throw new Error(`${length} bytes expected but ${this.offset - startOffset}\
read`);
},
() => endOffset - this.offset
];
}
expectLengthUint8(comment) {
const length = this.readUint8();
return this.expectLength(length);
}
expectLengthUint16(comment) {
const length = this.readUint16();
return this.expectLength(length);
}
expectLengthUint24(comment) {
const length = this.readUint24();
return this.expectLength(length);
}
expectLengthUint32(comment) {
const length = this.readUint32();
return this.expectLength(length);
}
expectLengthUint8Incl(comment) {
const length = this.readUint8();
return this.expectLength(length - 1);
}
expectLengthUint16Incl(comment) {
const length = this.readUint16();
return this.expectLength(length - 2);
}
expectLengthUint24Incl(comment) {
const length = this.readUint24();
return this.expectLength(length - 3);
}
expectLengthUint32Incl(comment) {
const length = this.readUint32();
return this.expectLength(length - 4);
}
// writing
writeBytes(bytes) {
this.data.set(bytes, this.offset);
this.offset += bytes.length;
return this;
}
writeUTF8String(s) {
const bytes = txtEnc.encode(s);
this.writeBytes(bytes);
return this;
}
writeUTF8StringNullTerminated(s) {
const bytes = txtEnc.encode(s);
this.writeBytes(bytes);
this.writeUint8(0);
return this;
}
writeUint8(value, comment) {
this.dataView.setUint8(this.offset, value);
this.offset += 1;
if (0) this.comment(comment);
return this;
}
writeUint16(value, comment) {
this.dataView.setUint16(this.offset, value);
this.offset += 2;
if (0) this.comment(comment);
return this;
}
writeUint24(value, comment) {
this.writeUint8((value & 16711680) >> 16);
this.writeUint16(value & 65535, comment);
return this;
}
writeUint32(value, comment) {
this.dataView.setUint32(this.offset, value);
this.offset += 4;
if (0) this.comment(comment);
return this;
}
// forward-looking lengths
_writeLengthGeneric(lengthBytes, inclusive, comment) {
const startOffset = this.offset;
this.offset += lengthBytes;
const endOffset = this.offset;
this.indent += 1;
this.indents[endOffset] = this.indent;
return () => {
const length = this.offset - (inclusive ? startOffset : endOffset);
if (lengthBytes === 1) this.dataView.setUint8(startOffset, length);
else if (lengthBytes === 2) this.dataView.setUint16(startOffset, length);
else if (lengthBytes === 3) {
this.dataView.setUint8(startOffset, (length & 16711680) >> 16);
this.dataView.setUint16(startOffset + 1, length & 65535);
} else if (lengthBytes === 4) this.dataView.setUint32(startOffset, length);
else throw new Error(`Invalid length for length field: ${lengthBytes}`);
this.indent -= 1;
this.indents[this.offset] = this.indent;
};
}
writeLengthUint8(comment) {
return this._writeLengthGeneric(1, false, comment);
}
writeLengthUint16(comment) {
return this._writeLengthGeneric(2, false, comment);
}
writeLengthUint24(comment) {
return this._writeLengthGeneric(3, false, comment);
}
writeLengthUint32(comment) {
return this._writeLengthGeneric(4, false, comment);
}
writeLengthUint8Incl(comment) {
return this._writeLengthGeneric(1, true, comment);
}
writeLengthUint16Incl(comment) {
return this._writeLengthGeneric(2, true, comment);
}
writeLengthUint24Incl(comment) {
return this._writeLengthGeneric(3, true, comment);
}
writeLengthUint32Incl(comment) {
return this._writeLengthGeneric(4, true, comment);
}
// output
array() {
return this.data.subarray(0, this.offset);
}
commentedString(all = false) {
let s = this.indents[0] !== void 0 ? indentChars.repeat(this.indents[0]) : "";
let indent = this.indents[0] ?? 0;
const len = all ? this.data.length : this.offset;
for (let i = 0; i < len; i++) {
s += this.data[i].toString(16).padStart(2, "0") + " ";
const comment = this.comments[i + 1];
if (this.indents[i + 1] !== void 0) indent = this.indents[i + 1];
if (comment) s += ` ${comment}
${indentChars.repeat(indent)}`;
}
return s;
}
};
// src/util/cryptoRandom.ts
var cryptoPromise = typeof crypto !== "undefined" ? Promise.resolve(crypto) : (
// browsers and Node 19+
import("crypto").then((c) => c.webcrypto)
);
async function getRandomValues(...args) {
const c = await cryptoPromise;
return c.getRandomValues(...args);
}
// src/tls/makeClientHello.ts
async function makeClientHello(host, publicKey, sessionId, useSNI = true) {
const h = new Bytes(1024);
h.writeUint8(22, 0);
h.writeUint16(769, 0);
const endRecordHeader = h.writeLengthUint16("TLS record");
h.writeUint8(1, 0);
const endHandshakeHeader = h.writeLengthUint24();
h.writeUint16(771, 0);
await getRandomValues(h.subarray(32));
const endSessionId = h.writeLengthUint8(0);
h.writeBytes(sessionId);
endSessionId();
const endCiphers = h.writeLengthUint16(0);
h.writeUint16(4865, 0);
endCiphers();
const endCompressionMethods = h.writeLengthUint8(0);
h.writeUint8(0, 0);
endCompressionMethods();
const endExtensions = h.writeLengthUint16(0);
if (useSNI) {
h.writeUint16(0, 0);
const endSNIExt = h.writeLengthUint16(0);
const endSNI = h.writeLengthUint16(0);
h.writeUint8(0, 0);
const endHostname = h.writeLengthUint16(0);
h.writeUTF8String(host);
endHostname();
endSNI();
endSNIExt();
}
h.writeUint16(11, 0);
const endFormatTypesExt = h.writeLengthUint16(0);
const endFormatTypes = h.writeLengthUint8(0);
h.writeUint8(0, 0);
endFormatTypes();
endFormatTypesExt();
h.writeUint16(10, 0);
const endGroupsExt = h.writeLengthUint16(0);
const endGroups = h.writeLengthUint16(0);
h.writeUint16(23, 0);
endGroups();
endGroupsExt();
h.writeUint16(13, 0);
const endSigsExt = h.writeLengthUint16(0);
const endSigs = h.writeLengthUint16(0);
h.writeUint16(1027, 0);
h.writeUint16(2052, 0);
endSigs();
endSigsExt();
h.writeUint16(43, 0);
const endVersionsExt = h.writeLengthUint16(0);
const endVersions = h.writeLengthUint8(0);
h.writeUint16(772, 0);
endVersions();
endVersionsExt();
h.writeUint16(51, 0);
const endKeyShareExt = h.writeLengthUint16(0);
const endKeyShares = h.writeLengthUint16(0);
h.writeUint16(23, 0);
const endKeyShare = h.writeLengthUint16(0);
if (0) {
h.writeUint8(publicKey[0], "legacy point format: always 4, which means uncompressed ([RFC 8446 \xA74.2.8.2](h\
ttps://datatracker.ietf.org/doc/html/rfc8446#section-4.2.8.2) and [RFC 8422 \xA75.4.1](https://datatracker.ietf.o\
rg/doc/html/rfc8422#section-5.4.1))");
h.writeBytes(publicKey.subarray(1, 33));
h.comment("x coordinate");
h.writeBytes(publicKey.subarray(33, 65));
h.comment("y coordinate");
} else {
h.writeBytes(publicKey);
}
endKeyShare();
endKeyShares();
endKeyShareExt();
endExtensions();
endHandshakeHeader();
endRecordHeader();
return h;
}
// src/util/hex.ts
function u8FromHex(hex) {
return new Uint8Array(Array.from(hex.matchAll(/[0-9a-f]/g)).map((hex2) => parseInt(hex2[0], 16)));
}
function hexFromU8(u8, spacer = "") {
return [...u8].map((n) => n.toString(16).padStart(2, "0")).join(spacer);
}
// src/tls/parseServerHello.ts
function parseServerHello(h, sessionId) {
let serverPublicKey;
let tlsVersionSpecified;
const [endServerHelloMessage] = h.expectLength(h.remaining());
h.expectUint8(2, 0);
const [endServerHello] = h.expectLengthUint24(0);
h.expectUint16(771, 0);
const serverRandom = h.readBytes(32);
if (equal(serverRandom, [
// SHA-256 of "HelloRetryRequest", https://datatracker.ietf.org/doc/html/rfc8446#page-32
// see also: echo -n "HelloRetryRequest" | openssl dgst -sha256 -hex
207,
33,
173,
116,
229,
154,
97,
17,
190,
29,
140,
2,
30,
101,
184,
145,
194,
162,
17,
22,
122,
187,
140,
94,
7,
158,
9,
226,
200,
168,
51,
156
])) throw new Error("Unexpected HelloRetryRequest");
h.expectUint8(sessionId.length, 0);
h.expectBytes(sessionId, 0);
h.expectUint16(4865, 0);
h.expectUint8(0, 0);
const [endExtensions, extensionsRemaining] = h.expectLengthUint16(0);
while (extensionsRemaining() > 0) {
const extensionType = h.readUint16(0);
const [endExtension] = h.expectLengthUint16(0);
if (extensionType === 43) {
h.expectUint16(772, 0);
tlsVersionSpecified = true;
} else if (extensionType === 51) {
h.expectUint16(23, 0);
const [endKeyShare, keyShareRemaining] = h.expectLengthUint16("key share");
const keyShareLength = keyShareRemaining();
if (keyShareLength !== 65) throw new Error(`Expected 65 bytes of key share, but got ${keyShareLength}`);
if (0) {
h.expectUint8(4, "legacy point format: always 4, which means uncompressed ([RFC 8446 \xA74.2.8.2](https:/\
/datatracker.ietf.org/doc/html/rfc8446#section-4.2.8.2) and [RFC 8422 \xA75.4.1](https://datatracker.ietf.org/doc\
/html/rfc8422#section-5.4.1))");
const x = h.readBytes(32);
h.comment("x coordinate");
const y = h.readBytes(32);
h.comment("y coordinate");
serverPublicKey = concat2([4], x, y);
} else {
serverPublicKey = h.readBytes(keyShareLength);
}
endKeyShare();
} else {
throw new Error(`Unexpected extension 0x${hexFromU8([extensionType])}`);
}
endExtension();
}
endExtensions();
endServerHello();
endServerHelloMessage();
if (tlsVersionSpecified !== true) throw new Error("No TLS version provided");
if (serverPublicKey === void 0) throw new Error("No key provided");
return serverPublicKey;
}
// src/presentation/highlights.ts
var regex = new RegExp(` .+|^(${indentChars})+`, "gm");
// src/tls/sessionTicket.ts
function parseSessionTicket(record) {
if (0) {
const ticket = new Bytes2(record);
ticket.expectUint8(4, "session ticket message ([RFC 8846 \xA74.6.1](https://datatracker.ietf.org/doc/html/rfc\
8446#section-4.6.1))");
const [endTicketRecord] = ticket.expectLengthUint24("session ticket message");
const ticketSeconds = ticket.readUint32();
ticket.comment(`ticket lifetime in seconds: ${ticketSeconds} = ${ticketSeconds / 3600} hours`);
ticket.readUint32("ticket age add");
const [endTicketNonce, ticketNonceRemaining] = ticket.expectLengthUint8("ticket nonce");
ticket.readBytes(ticketNonceRemaining());
ticket.comment("ticket nonce");
endTicketNonce();
const [endTicket, ticketRemaining] = ticket.expectLengthUint16("ticket");
ticket.readBytes(ticketRemaining());
ticket.comment("ticket");
endTicket();
const [endTicketExts, ticketExtsRemaining] = ticket.expectLengthUint16("ticket extensions");
if (ticketExtsRemaining() > 0) {
ticket.readBytes(ticketExtsRemaining());
ticket.comment("ticket extensions (ignored)");
}
endTicketExts();
endTicketRecord();
log(...highlightBytes(ticket.commentedString(), LogColours.server));
}
}
// src/tls/tlsRecord.ts
var maxPlaintextRecordLength = 1 << 14;
var maxCiphertextRecordLength = maxPlaintextRecordLength + 1 + 255;
async function readTlsRecord(read, expectedType, maxLength = maxPlaintextRecordLength) {
const headerLength = 5;
const headerData = await read(headerLength);
if (headerData === void 0) return;
if (headerData.length < headerLength) throw new Error("TLS record header truncated");
const header = new Bytes(headerData);
const type = header.readUint8();
if (type < 20 || type > 24) throw new Error(`Illegal TLS record type 0x${type.toString(16)}`);
if (expectedType !== void 0 && type !== expectedType) throw new Error(`Unexpected TLS record type 0x${type.toString(
16).padStart(2, "0")} (expected 0x${expectedType.toString(16).padStart(2, "0")})`);
header.expectUint16(771, "TLS record version 1.2 (middlebox compatibility)");
const length = header.readUint16();
if (length > maxLength) throw new Error(`Record too long: ${length} bytes`);
const content = await read(length);
if (content === void 0 || content.length < length) throw new Error("TLS record content truncated");
return { headerData, header, type, length, content };
}
async function readEncryptedTlsRecord(read, decrypter, expectedType) {
const encryptedRecord = await readTlsRecord(read, 23 /* Application */, maxCiphertextRecordLength);
if (encryptedRecord === void 0) return;
const encryptedBytes = new Bytes(encryptedRecord.content);
const [endEncrypted] = encryptedBytes.expectLength(encryptedBytes.remaining());
encryptedBytes.skip(encryptedRecord.length - 16, 0);
encryptedBytes.skip(16, 0);
endEncrypted();
const decryptedRecord = await decrypter.process(encryptedRecord.content, 16, encryptedRecord.headerData);
let recordTypeIndex = decryptedRecord.length - 1;
while (decryptedRecord[recordTypeIndex] === 0) recordTypeIndex -= 1;
if (recordTypeIndex < 0) throw new Error("Decrypted message has no record type indicator (all zeroes)");
const type = decryptedRecord[recordTypeIndex];
const record = decryptedRecord.subarray(
0,
recordTypeIndex
/* exclusive */
);
if (type === 21 /* Alert */) {
const closeNotify = record.length === 2 && record[0] === 1 && record[1] === 0;
if (closeNotify) return void 0;
}
if (type === 22 /* Handshake */ && record[0] === 4) {
parseSessionTicket(record);
return readEncryptedTlsRecord(read, decrypter, expectedType);
}
if (expectedType !== void 0 && type !== expectedType) throw new Error(`Unexpected TLS record type 0x${type.toString(
16).padStart(2, "0")} (expected 0x${expectedType.toString(16).padStart(2, "0")})`);
return record;
}
async function makeEncryptedTlsRecord(plaintext, encrypter, type) {
const data = concat(plaintext, [type]);
const headerLength = 5;
const dataLength = data.length;
const authTagLength = 16;
const payloadLength = dataLength + authTagLength;
const encryptedRecord = new Bytes(headerLength + payloadLength);
encryptedRecord.writeUint8(23, 0);
encryptedRecord.writeUint16(771, 0);
encryptedRecord.writeUint16(payloadLength, `${payloadLength} bytes follow`);
const [endEncryptedRecord] = encryptedRecord.expectLength(payloadLength);
const header = encryptedRecord.array();
const encryptedData = await encrypter.process(data, 16, header);
encryptedRecord.writeBytes(encryptedData.subarray(0, encryptedData.length - 16));
encryptedRecord.writeBytes(encryptedData.subarray(encryptedData.length - 16));
endEncryptedRecord();
return encryptedRecord.array();
}
async function makeEncryptedTlsRecords(plaintext, encrypter, type) {
const recordCount = Math.ceil(plaintext.length / maxPlaintextRecordLength);
const encryptedRecords = [];
for (let i = 0; i < recordCount; i++) {
const data = plaintext.subarray(i * maxPlaintextRecordLength, (i + 1) * maxPlaintextRecordLength);
const encryptedRecord = await makeEncryptedTlsRecord(data, encrypter, type);
encryptedRecords.push(encryptedRecord);
}
return encryptedRecords;
}
// src/util/cryptoProxy.ts
var subtleCrypto = typeof crypto !== "undefined" && crypto.subtle !== void 0 ? Promise.resolve(crypto.subtle) :
(
// browsers and Node 19+
import("crypto").then((c) => c.webcrypto.subtle)
);
function subtleCryptoMethod(method, args) {
return subtleCrypto.then((cs) => cs[method](...args));
}
var cryptoProxy_default = new Proxy({}, {
get(target, property, receiver) {
return (...args) => subtleCryptoMethod(property, args);
}
});
// src/tls/hkdf.ts
var txtEnc2 = new TextEncoder();
async function hkdfExtract(salt, keyMaterial, hashBits) {
const hmacKey = await cryptoProxy_default.importKey("raw", salt, { name: "HMAC", hash: { name: `SHA-${hashBits}` } },
false, ["sign"]);
var prk = new Uint8Array(await cryptoProxy_default.sign("HMAC", hmacKey, keyMaterial));
return prk;
}
async function hkdfExpand(key, info, length, hashBits) {
const hashBytes = hashBits >> 3;
const n = Math.ceil(length / hashBytes);
const okm = new Uint8Array(n * hashBytes);
const hmacKey = await cryptoProxy_default.importKey("raw", key, { name: "HMAC", hash: { name: `SHA-${hashBits}` } },
false, ["sign"]);
let tPrev = new Uint8Array(0);
for (let i = 0; i < n; i++) {
const hmacData = concat(tPrev, info, [i + 1]);
const tiBuffer = await cryptoProxy_default.sign("HMAC", hmacKey, hmacData);
const ti = new Uint8Array(tiBuffer);
okm.set(ti, hashBytes * i);
tPrev = ti;
}
return okm.subarray(0, length);
}
var tls13_Bytes = txtEnc2.encode("tls13 ");
async function hkdfExpandLabel(key, label, context, length, hashBits) {
const labelData = txtEnc2.encode(label);
const hkdfLabel = concat(
[(length & 65280) >> 8, length & 255],
[tls13_Bytes.length + labelData.length],
tls13_Bytes,
labelData,
[context.length],
context
);
return hkdfExpand(key, hkdfLabel, length, hashBits);
}
// src/tls/keys.ts
async function getHandshakeKeys(serverPublicKey, privateKey, hellos, hashBits, keyLength) {
const hashBytes = hashBits >>> 3;
const zeroKey = new Uint8Array(hashBytes);
const publicKey = await cryptoProxy_default.importKey("raw", serverPublicKey, { name: "ECDH", namedCurve: "P\
-256" }, false, []);
const sharedSecretBuffer = await cryptoProxy_default.deriveBits({ name: "ECDH", public: publicKey }, privateKey,
256);
const sharedSecret = new Uint8Array(sharedSecretBuffer);
const hellosHashBuffer = await cryptoProxy_default.digest("SHA-256", hellos);
const hellosHash = new Uint8Array(hellosHashBuffer);
const earlySecret = await hkdfExtract(new Uint8Array(1), zeroKey, hashBits);
const emptyHashBuffer = await cryptoProxy_default.digest(`SHA-${hashBits}`, new Uint8Array(0));
const emptyHash = new Uint8Array(emptyHashBuffer);
const derivedSecret = await hkdfExpandLabel(earlySecret, "derived", emptyHash, hashBytes, hashBits);
const handshakeSecret = await hkdfExtract(derivedSecret, sharedSecret, hashBits);
const clientSecret = await hkdfExpandLabel(handshakeSecret, "c hs traffic", hellosHash, hashBytes, hashBits);
const serverSecret = await hkdfExpandLabel(handshakeSecret, "s hs traffic", hellosHash, hashBytes, hashBits);
const clientHandshakeKey = await hkdfExpandLabel(clientSecret, "key", new Uint8Array(0), keyLength, hashBits);
const serverHandshakeKey = await hkdfExpandLabel(serverSecret, "key", new Uint8Array(0), keyLength, hashBits);
const clientHandshakeIV = await hkdfExpandLabel(clientSecret, "iv", new Uint8Array(0), 12, hashBits);
const serverHandshakeIV = await hkdfExpandLabel(serverSecret, "iv", new Uint8Array(0), 12, hashBits);
return { serverHandshakeKey, serverHandshakeIV, clientHandshakeKey, clientHandshakeIV, handshakeSecret, clientSecret,
serverSecret };
}
async function getApplicationKeys(handshakeSecret, handshakeHash, hashBits, keyLength) {
const hashBytes = hashBits >>> 3;
const zeroKey = new Uint8Array(hashBytes);
const emptyHashBuffer = await cryptoProxy_default.digest(`SHA-${hashBits}`, new Uint8Array(0));
const emptyHash = new Uint8Array(emptyHashBuffer);
const derivedSecret = await hkdfExpandLabel(handshakeSecret, "derived", emptyHash, hashBytes, hashBits);
const masterSecret = await hkdfExtract(derivedSecret, zeroKey, hashBits);
const clientSecret = await hkdfExpandLabel(masterSecret, "c ap traffic", handshakeHash, hashBytes, hashBits);
const serverSecret = await hkdfExpandLabel(masterSecret, "s ap traffic", handshakeHash, hashBytes, hashBits);
const clientApplicationKey = await hkdfExpandLabel(clientSecret, "key", new Uint8Array(0), keyLength, hashBits);
const serverApplicationKey = await hkdfExpandLabel(serverSecret, "key", new Uint8Array(0), keyLength, hashBits);
const clientApplicationIV = await hkdfExpandLabel(clientSecret, "iv", new Uint8Array(0), 12, hashBits);
const serverApplicationIV = await hkdfExpandLabel(serverSecret, "iv", new Uint8Array(0), 12, hashBits);
return { serverApplicationKey, serverApplicationIV, clientApplicationKey, clientApplicationIV };
}
// src/tls/aesgcm.ts
var Crypter = class {
constructor(mode, key, initialIv) {
this.mode = mode;
this.key = key;
this.initialIv = initialIv;
__publicField(this, "recordsProcessed", 0n);
__publicField(this, "priorPromise", Promise.resolve(new Uint8Array()));
}
// The `Promise`s returned by successive calls to this function always resolve in sequence,
// which is not true for `processUnsequenced` in Node (even if it seems to be in browsers)
async process(data, authTagLength, additionalData) {
return this.sequence(this.processUnsequenced(data, authTagLength, additionalData));
}
async sequence(promise) {
const sequenced = this.priorPromise.then(() => promise);
this.priorPromise = sequenced;
return sequenced;
}
// data is plainText for encrypt, concat(ciphertext, authTag) for decrypt
async processUnsequenced(data, authTagByteLength, additionalData) {
const recordIndex = this.recordsProcessed;
this.recordsProcessed += 1n;
const iv = this.initialIv.slice();
const ivLength = BigInt(iv.length);
const lastIndex = ivLength - 1n;
for (let i = 0n; i < ivLength; i++) {
const shifted = recordIndex >> (i << 3n);
if (shifted === 0n) break;
iv[Number(lastIndex - i)] ^= Number(shifted & 0xffn);
}
const authTagBitLength = authTagByteLength << 3;
const algorithm = { name: "AES-GCM", iv, tagLength: authTagBitLength, additionalData };
const resultBuffer = await cryptoProxy_default[this.mode](algorithm, this.key, data);
const result = new Uint8Array(resultBuffer);
return result;
}
};
// src/util/base64.ts
function base64Error(charCode) {
throw new Error(`Invalid base 64 character: ${String.fromCharCode(charCode)}`);
}
function stdCharCodes(charCode) {
return charCode > 64 && charCode < 91 ? charCode - 65 : charCode > 96 && charCode < 123 ? charCode - 71 : charCode >
47 && charCode < 58 ? charCode + 4 : charCode === 43 ? 62 : charCode === 47 ? 63 : charCode === 61 ? 64 : base64Error(
charCode);
}
function base64Decode(input, charCodes = stdCharCodes, autoPad = true) {
const len = input.length;
if (autoPad) input += "=".repeat(len % 4);
let inputIdx = 0, outputIdx = 0;
let enc1 = 64, enc2 = 64, enc3 = 64, enc4 = 64;
const output = new Uint8Array(len * 0.75);
while (inputIdx < len) {
enc1 = charCodes(input.charCodeAt(inputIdx++));
enc2 = charCodes(input.charCodeAt(inputIdx++));
enc3 = charCodes(input.charCodeAt(inputIdx++));
enc4 = charCodes(input.charCodeAt(inputIdx++));
output[outputIdx++] = enc1 << 2 | enc2 >> 4;
output[outputIdx++] = (enc2 & 15) << 4 | enc3 >> 2;
output[outputIdx++] = (enc3 & 3) << 6 | enc4;
}
const excessLength = enc2 === 64 ? 0 : (
// implies zero-length input
enc3 === 64 ? 2 : enc4 === 64 ? 1 : 0
);
return output.subarray(0, outputIdx - excessLength);
}
// src/util/asn1bytes.ts
var ASN1Bytes = class extends Bytes {
readASN1Length(comment) {
const byte1 = this.readUint8();
if (byte1 < 128) {
return byte1;
}
const lengthBytes = byte1 & 127;
const fullComment = 0;
if (lengthBytes === 1) return this.readUint8(fullComment);
if (lengthBytes === 2) return this.readUint16(fullComment);
if (lengthBytes === 3) return this.readUint24(fullComment);
if (lengthBytes === 4) return this.readUint32(fullComment);
throw new Error(`ASN.1 length fields are only supported up to 4 bytes (this one is ${lengthBytes} bytes)`);
}
expectASN1Length(comment) {
const length = this.readASN1Length(comment);
return this.expectLength(length);
}
readASN1OID(comment) {
const [endOID, OIDRemaining] = this.expectASN1Length(0);
const byte1 = this.readUint8();
let oid = `${Math.floor(byte1 / 40)}.${byte1 % 40}`;
while (OIDRemaining() > 0) {
let value = 0;
while (true) {
const nextByte = this.readUint8();
value <<= 7;
value += nextByte & 127;
if (nextByte < 128) break;
}
oid += `.${value}`;
}
if (0) this.comment(comment.replace(/%/g, oid));
endOID();
return oid;
}
readASN1Boolean(comment) {
const [endBoolean, booleanRemaining] = this.expectASN1Length(0);
const length = booleanRemaining();
if (length !== 1) throw new Error(`Boolean has weird length: ${length}`);
const byte = this.readUint8();
let result;
if (byte === 255) result = true;
else if (byte === 0) result = false;
else throw new Error(`Boolean has weird value: 0x${hexFromU8([byte])}`);
if (0) this.comment(comment.replace(/%/g, String(result)));
endBoolean();
return result;
}
readASN1UTCTime() {
const [endTime, timeRemaining] = this.expectASN1Length(0);
const timeStr = this.readUTF8String(timeRemaining());
const parts = timeStr.match(/^(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)Z$/);
if (!parts) throw new Error("Unrecognised ASN.1 UTC time format");
const [, yr2dstr, mth, dy, hr, min, sec] = parts;
const yr2d = parseInt(yr2dstr, 10);
const yr = yr2d + (yr2d >= 50 ? 1900 : 2e3);
const time = /* @__PURE__ */ new Date(`${yr}-${mth}-${dy}T${hr}:${min}:${sec}Z`);
endTime();
return time;
}
readASN1GeneralizedTime() {
const [endTime, timeRemaining] = this.expectASN1Length(0);
const timeStr = this.readUTF8String(timeRemaining());
const parts = timeStr.match(/^([0-9]{4})([0-9]{2})([0-9]{2})([0-9]{2})([0-9]{2})?([0-9]{2})?([.][0-9]+)?(Z)?([-+][0-9]+)?$/);
if (!parts) throw new Error("Unrecognised ASN.1 generalized time format");
const [, yr, mth, dy, hr, min, sec, fracsec, z, tz] = parts;
if (sec === void 0 && fracsec !== void 0) throw new Error("Invalid ASN.1 generalized time format (fraction\
without seconds)");
if (z !== void 0 && tz !== void 0) throw new Error("Invalid ASN.1 generalized time format (Z and timezone)");
const time = /* @__PURE__ */ new Date(`${yr}-${mth}-${dy}T${hr}:${min ?? "00"}:${sec ?? "00"}${fracsec ?? ""}${tz ??
"Z"}`);
endTime();
return time;
}
readASN1BitString() {
const [endBitString, bitStringRemaining] = this.expectASN1Length(0);
const rightPadBits = this.readUint8(0);
const bytesLength = bitStringRemaining();
const bitString = this.readBytes(bytesLength);
if (rightPadBits > 7) throw new Error(`Invalid right pad value: ${rightPadBits}`);
if (rightPadBits > 0) {
const leftPadNext = 8 - rightPadBits;
for (let i = bytesLength - 1; i > 0; i--) {
bitString[i] = 255 & bitString[i - 1] << leftPadNext | bitString[i] >>> rightPadBits;
}
bitString[0] = bitString[0] >>> rightPadBits;
}
endBitString();
return bitString;
}
};
// src/tls/certUtils.ts
var universalTypeBoolean = 1;
var universalTypeInteger = 2;
var constructedUniversalTypeSequence = 48;
var constructedUniversalTypeSet = 49;
var universalTypeOID = 6;
var universalTypePrintableString = 19;
var universalTypeTeletexString = 20;
var universalTypeUTF8String = 12;
var universalTypeIA5String = 22;
var universalTypeUTCTime = 23;
var universalTypeGeneralizedTime = 24;
var universalTypeNull = 5;
var universalTypeOctetString = 4;
var universalTypeBitString = 3;
var constructedContextSpecificType = 163;
var contextSpecificType = 128;
var DNOIDMap = {
"2.5.4.6": "C",
// country
"2.5.4.10": "O",
// organisation
"2.5.4.11": "OU",
// organisational unit
"2.5.4.3": "CN",
// common name
"2.5.4.7": "L",
// locality
"2.5.4.8": "ST",
// state/province
"2.5.4.12": "T",
// title
"2.5.4.42": "GN",
// given name
"2.5.4.43": "I",
// initials
"2.5.4.4": "SN",
// surname
"1.2.840.113549.1.9.1": "MAIL",
"2.5.4.5": "SERIALNUMBER"
};
function intFromBitString(bs) {
const { length } = bs;
if (length > 4) throw new Error(`Bit string length ${length} would overflow JS bit operators`);
let result = 0;
let leftShift = 0;
for (let i = bs.length - 1; i >= 0; i--) {
result |= bs[i] << leftShift;
leftShift += 8;
}
return result;
}
function readSeqOfSetOfSeq(cb, seqType) {
const result = {};
cb.expectUint8(constructedUniversalTypeSequence, 0);
const [endSeq, seqRemaining] = cb.expectASN1Length(0);
while (seqRemaining() > 0) {
cb.expectUint8(constructedUniversalTypeSet, 0);
const [endItemSet] = cb.expectASN1Length(0);
cb.expectUint8(constructedUniversalTypeSequence, 0);
const [endItemSeq] = cb.expectASN1Length(0);
cb.expectUint8(universalTypeOID, 0);
const itemOID = cb.readASN1OID();
const itemName = DNOIDMap[itemOID] ?? itemOID;
const valueType = cb.readUint8();
if (valueType === universalTypePrintableString) {
} else if (valueType === universalTypeUTF8String) {
} else if (valueType === universalTypeIA5String) {
} else if (valueType === universalTypeTeletexString) {
} else {
throw new Error(`Unexpected item type in certificate ${seqType}: 0x${hexFromU8([valueType])}`);
}
const [endItemString, itemStringRemaining] = cb.expectASN1Length(0);
const itemValue = cb.readUTF8String(itemStringRemaining());
endItemString();
endItemSeq();
endItemSet();
const existingValue = result[itemName];
if (existingValue === void 0) result[itemName] = itemValue;
else if (typeof existingValue === "string") result[itemName] = [existingValue, itemValue];
else existingValue.push(itemValue);
}
endSeq();
return result;
}
function readNamesSeq(cb, typeUnionBits = 0) {
const names = [];
const [endNamesSeq, namesSeqRemaining] = cb.expectASN1Length(0);
while (namesSeqRemaining() > 0) {
const type = cb.readUint8(0);
const [endName, nameRemaining] = cb.expectASN1Length(0);
let name;
if (type === (typeUnionBits | 2 /* dNSName */)) {
name = cb.readUTF8String(nameRemaining());
} else {
name = cb.readBytes(nameRemaining());
}
names.push({ name, type });
endName();
}
endNamesSeq();
return names;
}
function algorithmWithOID(oid) {
const algo = {
"1.2.840.113549.1.1.1": {
name: "RSAES-PKCS1-v1_5"
},
"1.2.840.113549.1.1.5": {
name: "RSASSA-PKCS1-v1_5",
hash: {
name: "SHA-1"
}
},
"1.2.840.113549.1.1.11": {
name: "RSASSA-PKCS1-v1_5",
hash: {
name: "SHA-256"
}
},
"1.2.840.113549.1.1.12": {
name: "RSASSA-PKCS1-v1_5",
hash: {
name: "SHA-384"
}
},
"1.2.840.113549.1.1.13": {
name: "RSASSA-PKCS1-v1_5",
hash: {
name: "SHA-512"
}
},
"1.2.840.113549.1.1.10": {
name: "RSA-PSS"