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Remove jsonwebtoken dependency

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advplyr 2022-07-06 18:45:43 -05:00
parent b61ecefce4
commit 954cf3e14e
29 changed files with 2130 additions and 93 deletions
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17
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Copyright (c) 2013 Brian J. Brennan
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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Copyright (c) 2013, GoInstant Inc., a salesforce.com company
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of salesforce.com, nor GoInstant, nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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/*jshint node:true */
'use strict';
var Buffer = require('buffer').Buffer; // browserify
var SlowBuffer = require('buffer').SlowBuffer;
module.exports = bufferEq;
function bufferEq(a, b) {
// shortcutting on type is necessary for correctness
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
return false;
}
// buffer sizes should be well-known information, so despite this
// shortcutting, it doesn't leak any information about the *contents* of the
// buffers.
if (a.length !== b.length) {
return false;
}
var c = 0;
for (var i = 0; i < a.length; i++) {
/*jshint bitwise:false */
c |= a[i] ^ b[i]; // XOR
}
return c === 0;
}
bufferEq.install = function () {
Buffer.prototype.equal = SlowBuffer.prototype.equal = function equal(that) {
return bufferEq(this, that);
};
};
var origBufEqual = Buffer.prototype.equal;
var origSlowBufEqual = SlowBuffer.prototype.equal;
bufferEq.restore = function () {
Buffer.prototype.equal = origBufEqual;
SlowBuffer.prototype.equal = origSlowBufEqual;
};

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'use strict';
var Buffer = require('safe-buffer').Buffer;
var getParamBytesForAlg = require('./param-bytes-for-alg');
var MAX_OCTET = 0x80,
CLASS_UNIVERSAL = 0,
PRIMITIVE_BIT = 0x20,
TAG_SEQ = 0x10,
TAG_INT = 0x02,
ENCODED_TAG_SEQ = (TAG_SEQ | PRIMITIVE_BIT) | (CLASS_UNIVERSAL << 6),
ENCODED_TAG_INT = TAG_INT | (CLASS_UNIVERSAL << 6);
function base64Url(base64) {
return base64
.replace(/=/g, '')
.replace(/\+/g, '-')
.replace(/\//g, '_');
}
function signatureAsBuffer(signature) {
if (Buffer.isBuffer(signature)) {
return signature;
} else if ('string' === typeof signature) {
return Buffer.from(signature, 'base64');
}
throw new TypeError('ECDSA signature must be a Base64 string or a Buffer');
}
function derToJose(signature, alg) {
signature = signatureAsBuffer(signature);
var paramBytes = getParamBytesForAlg(alg);
// the DER encoded param should at most be the param size, plus a padding
// zero, since due to being a signed integer
var maxEncodedParamLength = paramBytes + 1;
var inputLength = signature.length;
var offset = 0;
if (signature[offset++] !== ENCODED_TAG_SEQ) {
throw new Error('Could not find expected "seq"');
}
var seqLength = signature[offset++];
if (seqLength === (MAX_OCTET | 1)) {
seqLength = signature[offset++];
}
if (inputLength - offset < seqLength) {
throw new Error('"seq" specified length of "' + seqLength + '", only "' + (inputLength - offset) + '" remaining');
}
if (signature[offset++] !== ENCODED_TAG_INT) {
throw new Error('Could not find expected "int" for "r"');
}
var rLength = signature[offset++];
if (inputLength - offset - 2 < rLength) {
throw new Error('"r" specified length of "' + rLength + '", only "' + (inputLength - offset - 2) + '" available');
}
if (maxEncodedParamLength < rLength) {
throw new Error('"r" specified length of "' + rLength + '", max of "' + maxEncodedParamLength + '" is acceptable');
}
var rOffset = offset;
offset += rLength;
if (signature[offset++] !== ENCODED_TAG_INT) {
throw new Error('Could not find expected "int" for "s"');
}
var sLength = signature[offset++];
if (inputLength - offset !== sLength) {
throw new Error('"s" specified length of "' + sLength + '", expected "' + (inputLength - offset) + '"');
}
if (maxEncodedParamLength < sLength) {
throw new Error('"s" specified length of "' + sLength + '", max of "' + maxEncodedParamLength + '" is acceptable');
}
var sOffset = offset;
offset += sLength;
if (offset !== inputLength) {
throw new Error('Expected to consume entire buffer, but "' + (inputLength - offset) + '" bytes remain');
}
var rPadding = paramBytes - rLength,
sPadding = paramBytes - sLength;
var dst = Buffer.allocUnsafe(rPadding + rLength + sPadding + sLength);
for (offset = 0; offset < rPadding; ++offset) {
dst[offset] = 0;
}
signature.copy(dst, offset, rOffset + Math.max(-rPadding, 0), rOffset + rLength);
offset = paramBytes;
for (var o = offset; offset < o + sPadding; ++offset) {
dst[offset] = 0;
}
signature.copy(dst, offset, sOffset + Math.max(-sPadding, 0), sOffset + sLength);
dst = dst.toString('base64');
dst = base64Url(dst);
return dst;
}
function countPadding(buf, start, stop) {
var padding = 0;
while (start + padding < stop && buf[start + padding] === 0) {
++padding;
}
var needsSign = buf[start + padding] >= MAX_OCTET;
if (needsSign) {
--padding;
}
return padding;
}
function joseToDer(signature, alg) {
signature = signatureAsBuffer(signature);
var paramBytes = getParamBytesForAlg(alg);
var signatureBytes = signature.length;
if (signatureBytes !== paramBytes * 2) {
throw new TypeError('"' + alg + '" signatures must be "' + paramBytes * 2 + '" bytes, saw "' + signatureBytes + '"');
}
var rPadding = countPadding(signature, 0, paramBytes);
var sPadding = countPadding(signature, paramBytes, signature.length);
var rLength = paramBytes - rPadding;
var sLength = paramBytes - sPadding;
var rsBytes = 1 + 1 + rLength + 1 + 1 + sLength;
var shortLength = rsBytes < MAX_OCTET;
var dst = Buffer.allocUnsafe((shortLength ? 2 : 3) + rsBytes);
var offset = 0;
dst[offset++] = ENCODED_TAG_SEQ;
if (shortLength) {
// Bit 8 has value "0"
// bits 7-1 give the length.
dst[offset++] = rsBytes;
} else {
// Bit 8 of first octet has value "1"
// bits 7-1 give the number of additional length octets.
dst[offset++] = MAX_OCTET | 1;
// length, base 256
dst[offset++] = rsBytes & 0xff;
}
dst[offset++] = ENCODED_TAG_INT;
dst[offset++] = rLength;
if (rPadding < 0) {
dst[offset++] = 0;
offset += signature.copy(dst, offset, 0, paramBytes);
} else {
offset += signature.copy(dst, offset, rPadding, paramBytes);
}
dst[offset++] = ENCODED_TAG_INT;
dst[offset++] = sLength;
if (sPadding < 0) {
dst[offset++] = 0;
signature.copy(dst, offset, paramBytes);
} else {
signature.copy(dst, offset, paramBytes + sPadding);
}
return dst;
}
module.exports = {
derToJose: derToJose,
joseToDer: joseToDer
};

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'use strict';
function getParamSize(keySize) {
var result = ((keySize / 8) | 0) + (keySize % 8 === 0 ? 0 : 1);
return result;
}
var paramBytesForAlg = {
ES256: getParamSize(256),
ES384: getParamSize(384),
ES512: getParamSize(521)
};
function getParamBytesForAlg(alg) {
var paramBytes = paramBytesForAlg[alg];
if (paramBytes) {
return paramBytes;
}
throw new Error('Unknown algorithm "' + alg + '"');
}
module.exports = getParamBytesForAlg;

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//
// used by jws
// Source: https://github.com/auth0/node-jwa
//
var bufferEqual = require('./buffer-equal-constant-time');
var Buffer = require('safe-buffer').Buffer;
var crypto = require('crypto');
var formatEcdsa = require('./ecdsa-sig-formatter');
var util = require('util');
var MSG_INVALID_ALGORITHM = '"%s" is not a valid algorithm.\n Supported algorithms are:\n "HS256", "HS384", "HS512", "RS256", "RS384", "RS512", "PS256", "PS384", "PS512", "ES256", "ES384", "ES512" and "none".'
var MSG_INVALID_SECRET = 'secret must be a string or buffer';
var MSG_INVALID_VERIFIER_KEY = 'key must be a string or a buffer';
var MSG_INVALID_SIGNER_KEY = 'key must be a string, a buffer or an object';
var supportsKeyObjects = typeof crypto.createPublicKey === 'function';
if (supportsKeyObjects) {
MSG_INVALID_VERIFIER_KEY += ' or a KeyObject';
MSG_INVALID_SECRET += 'or a KeyObject';
}
function checkIsPublicKey(key) {
if (Buffer.isBuffer(key)) {
return;
}
if (typeof key === 'string') {
return;
}
if (!supportsKeyObjects) {
throw typeError(MSG_INVALID_VERIFIER_KEY);
}
if (typeof key !== 'object') {
throw typeError(MSG_INVALID_VERIFIER_KEY);
}
if (typeof key.type !== 'string') {
throw typeError(MSG_INVALID_VERIFIER_KEY);
}
if (typeof key.asymmetricKeyType !== 'string') {
throw typeError(MSG_INVALID_VERIFIER_KEY);
}
if (typeof key.export !== 'function') {
throw typeError(MSG_INVALID_VERIFIER_KEY);
}
};
function checkIsPrivateKey(key) {
if (Buffer.isBuffer(key)) {
return;
}
if (typeof key === 'string') {
return;
}
if (typeof key === 'object') {
return;
}
throw typeError(MSG_INVALID_SIGNER_KEY);
};
function checkIsSecretKey(key) {
if (Buffer.isBuffer(key)) {
return;
}
if (typeof key === 'string') {
return key;
}
if (!supportsKeyObjects) {
throw typeError(MSG_INVALID_SECRET);
}
if (typeof key !== 'object') {
throw typeError(MSG_INVALID_SECRET);
}
if (key.type !== 'secret') {
throw typeError(MSG_INVALID_SECRET);
}
if (typeof key.export !== 'function') {
throw typeError(MSG_INVALID_SECRET);
}
}
function fromBase64(base64) {
return base64
.replace(/=/g, '')
.replace(/\+/g, '-')
.replace(/\//g, '_');
}
function toBase64(base64url) {
base64url = base64url.toString();
var padding = 4 - base64url.length % 4;
if (padding !== 4) {
for (var i = 0; i < padding; ++i) {
base64url += '=';
}
}
return base64url
.replace(/\-/g, '+')
.replace(/_/g, '/');
}
function typeError(template) {
var args = [].slice.call(arguments, 1);
var errMsg = util.format.bind(util, template).apply(null, args);
return new TypeError(errMsg);
}
function bufferOrString(obj) {
return Buffer.isBuffer(obj) || typeof obj === 'string';
}
function normalizeInput(thing) {
if (!bufferOrString(thing))
thing = JSON.stringify(thing);
return thing;
}
function createHmacSigner(bits) {
return function sign(thing, secret) {
checkIsSecretKey(secret);
thing = normalizeInput(thing);
var hmac = crypto.createHmac('sha' + bits, secret);
var sig = (hmac.update(thing), hmac.digest('base64'))
return fromBase64(sig);
}
}
function createHmacVerifier(bits) {
return function verify(thing, signature, secret) {
var computedSig = createHmacSigner(bits)(thing, secret);
return bufferEqual(Buffer.from(signature), Buffer.from(computedSig));
}
}
function createKeySigner(bits) {
return function sign(thing, privateKey) {
checkIsPrivateKey(privateKey);
thing = normalizeInput(thing);
// Even though we are specifying "RSA" here, this works with ECDSA
// keys as well.
var signer = crypto.createSign('RSA-SHA' + bits);
var sig = (signer.update(thing), signer.sign(privateKey, 'base64'));
return fromBase64(sig);
}
}
function createKeyVerifier(bits) {
return function verify(thing, signature, publicKey) {
checkIsPublicKey(publicKey);
thing = normalizeInput(thing);
signature = toBase64(signature);
var verifier = crypto.createVerify('RSA-SHA' + bits);
verifier.update(thing);
return verifier.verify(publicKey, signature, 'base64');
}
}
function createPSSKeySigner(bits) {
return function sign(thing, privateKey) {
checkIsPrivateKey(privateKey);
thing = normalizeInput(thing);
var signer = crypto.createSign('RSA-SHA' + bits);
var sig = (signer.update(thing), signer.sign({
key: privateKey,
padding: crypto.constants.RSA_PKCS1_PSS_PADDING,
saltLength: crypto.constants.RSA_PSS_SALTLEN_DIGEST
}, 'base64'));
return fromBase64(sig);
}
}
function createPSSKeyVerifier(bits) {
return function verify(thing, signature, publicKey) {
checkIsPublicKey(publicKey);
thing = normalizeInput(thing);
signature = toBase64(signature);
var verifier = crypto.createVerify('RSA-SHA' + bits);
verifier.update(thing);
return verifier.verify({
key: publicKey,
padding: crypto.constants.RSA_PKCS1_PSS_PADDING,
saltLength: crypto.constants.RSA_PSS_SALTLEN_DIGEST
}, signature, 'base64');
}
}
function createECDSASigner(bits) {
var inner = createKeySigner(bits);
return function sign() {
var signature = inner.apply(null, arguments);
signature = formatEcdsa.derToJose(signature, 'ES' + bits);
return signature;
};
}
function createECDSAVerifer(bits) {
var inner = createKeyVerifier(bits);
return function verify(thing, signature, publicKey) {
signature = formatEcdsa.joseToDer(signature, 'ES' + bits).toString('base64');
var result = inner(thing, signature, publicKey);
return result;
};
}
function createNoneSigner() {
return function sign() {
return '';
}
}
function createNoneVerifier() {
return function verify(thing, signature) {
return signature === '';
}
}
module.exports = function jwa(algorithm) {
var signerFactories = {
hs: createHmacSigner,
rs: createKeySigner,
ps: createPSSKeySigner,
es: createECDSASigner,
none: createNoneSigner,
}
var verifierFactories = {
hs: createHmacVerifier,
rs: createKeyVerifier,
ps: createPSSKeyVerifier,
es: createECDSAVerifer,
none: createNoneVerifier,
}
var match = algorithm.match(/^(RS|PS|ES|HS)(256|384|512)$|^(none)$/);
if (!match)
throw typeError(MSG_INVALID_ALGORITHM, algorithm);
var algo = (match[1] || match[3]).toLowerCase();
var bits = match[2];
return {
sign: signerFactories[algo](bits),
verify: verifierFactories[algo](bits),
}
};