Files
certd/packages/libs/lib-huawei/src/lib/signer.js
T
2024-07-19 17:22:54 +08:00

459 lines
26 KiB
JavaScript

import crypto from 'crypto';
function hmacsha256(keyByte, message) {
return crypto
.createHmac('SHA256', keyByte)
.update(message)
.digest()
.toString('hex');
}
function HexEncodeSHA256Hash(body) {
return crypto.createHash('SHA256').update(body).digest().toString('hex');
}
const Algorithm = 'SDK-HMAC-SHA256';
const HeaderXDate = 'X-Sdk-Date';
const HeaderAuthorization = 'Authorization';
const HeaderContentSha256 = 'x-sdk-content-sha256';
const hexTable = new Array(256);
for (let i = 0; i < 256; ++i)
hexTable[i] = '%' + ((i < 16 ? '0' : '') + i.toString(16)).toUpperCase();
const noEscape = [
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
1,
1,
0,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0,
0,
0,
0,
0,
0,
0,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0,
0,
0,
0,
1,
0,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0,
0,
0,
1,
0, // 112 - 127
];
// function urlEncode is based on https://github.com/nodejs/node/blob/master/lib/querystring.js
// Copyright Joyent, Inc. and other Node contributors.
function urlEncode(str) {
if (typeof str !== 'string') {
if (typeof str === 'object')
str = String(str);
else
str += '';
}
let out = '';
let lastPos = 0;
for (let i = 0; i < str.length; ++i) {
let c = str.charCodeAt(i);
// ASCII
if (c < 0x80) {
if (noEscape[c] === 1)
continue;
if (lastPos < i)
out += str.slice(lastPos, i);
lastPos = i + 1;
out += hexTable[c];
continue;
}
if (lastPos < i)
out += str.slice(lastPos, i);
// Multi-byte characters ...
if (c < 0x800) {
lastPos = i + 1;
out += hexTable[0xc0 | (c >> 6)] + hexTable[0x80 | (c & 0x3f)];
continue;
}
if (c < 0xd800 || c >= 0xe000) {
lastPos = i + 1;
out +=
hexTable[0xe0 | (c >> 12)] +
hexTable[0x80 | ((c >> 6) & 0x3f)] +
hexTable[0x80 | (c & 0x3f)];
continue;
}
// Surrogate pair
++i;
if (i >= str.length)
throw new Error('ERR_INVALID_URI');
const c2 = str.charCodeAt(i) & 0x3ff;
lastPos = i + 1;
c = 0x10000 + (((c & 0x3ff) << 10) | c2);
out +=
hexTable[0xf0 | (c >> 18)] +
hexTable[0x80 | ((c >> 12) & 0x3f)] +
hexTable[0x80 | ((c >> 6) & 0x3f)] +
hexTable[0x80 | (c & 0x3f)];
}
if (lastPos === 0)
return str;
if (lastPos < str.length)
return out + str.slice(lastPos);
return out;
}
function findHeader(r, header) {
for (const k in r.headers) {
if (k.toLowerCase() === header.toLowerCase()) {
return r.headers[k];
}
}
return null;
}
// Build a CanonicalRequest from a regular request string
//
// CanonicalRequest =
// HTTPRequestMethod + '\n' +
// CanonicalURI + '\n' +
// CanonicalQueryString + '\n' +
// CanonicalHeaders + '\n' +
// SignedHeaders + '\n' +
// HexEncode(Hash(RequestPayload))
function CanonicalRequest(r, signedHeaders) {
let hexencode = findHeader(r, HeaderContentSha256);
if (hexencode === null) {
const data = RequestPayload(r);
hexencode = HexEncodeSHA256Hash(data);
}
return (r.method +
'\n' +
CanonicalURI(r) +
'\n' +
CanonicalQueryString(r) +
'\n' +
CanonicalHeaders(r, signedHeaders) +
'\n' +
signedHeaders.join(';') +
'\n' +
hexencode);
}
function CanonicalURI(r) {
const pattens = r.uri.split('/');
const uri = [];
for (const k in pattens) {
const v = pattens[k];
uri.push(urlEncode(v));
}
let urlpath = uri.join('/');
if (urlpath[urlpath.length - 1] !== '/') {
urlpath = urlpath + '/';
}
//r.uri = urlpath
return urlpath;
}
function CanonicalQueryString(r) {
const keys = [];
for (const key in r.query) {
keys.push(key);
}
keys.sort();
const a = [];
for (const i in keys) {
const key = urlEncode(keys[i]);
const value = r.query[keys[i]];
if (Array.isArray(value)) {
value.sort();
for (const iv in value) {
a.push(key + '=' + urlEncode(value[iv]));
}
}
else {
a.push(key + '=' + urlEncode(value));
}
}
return a.join('&');
}
function CanonicalHeaders(r, signedHeaders) {
const headers = {};
for (const key in r.headers) {
headers[key.toLowerCase()] = r.headers[key];
}
const a = [];
for (const i in signedHeaders) {
const value = headers[signedHeaders[i]];
a.push(signedHeaders[i] + ':' + value.trim());
}
return a.join('\n') + '\n';
}
function SignedHeaders(r) {
const a = [];
for (const key in r.headers) {
a.push(key.toLowerCase());
}
a.sort();
return a;
}
function RequestPayload(r) {
return r.body;
}
// Create a "String to Sign".
function StringToSign(canonicalRequest, t) {
const bytes = HexEncodeSHA256Hash(canonicalRequest);
return Algorithm + '\n' + t + '\n' + bytes;
}
// Create the HWS Signature.
function SignStringToSign(stringToSign, signingKey) {
return hmacsha256(signingKey, stringToSign);
}
// Get the finalized value for the "Authorization" header. The signature
// parameter is the output from SignStringToSign
function AuthHeaderValue(signature, Key, signedHeaders) {
return (Algorithm +
' Access=' +
Key +
', SignedHeaders=' +
signedHeaders.join(';') +
', Signature=' +
signature);
}
function twoChar(s) {
if (s >= 10) {
return '' + s;
}
else {
return '0' + s;
}
}
function getTime() {
const date = new Date();
return ('' +
date.getUTCFullYear() +
twoChar(date.getUTCMonth() + 1) +
twoChar(date.getUTCDate()) +
'T' +
twoChar(date.getUTCHours()) +
twoChar(date.getUTCMinutes()) +
twoChar(date.getUTCSeconds()) +
'Z');
}
export class SigHttpRequest {
method = '';
host = '';
uri = '';
query = {};
headers = {};
body = '';
constructor(method, url, headers, body) {
if (method === undefined) {
this.method = '';
}
else {
this.method = method;
}
if (url === undefined) {
this.host = '';
this.uri = '';
this.query = {};
}
else {
this.query = {};
let host, path;
let i = url.indexOf('://');
if (i !== -1) {
url = url.substr(i + 3);
}
i = url.indexOf('?');
if (i !== -1) {
const query_str = url.substr(i + 1);
url = url.substr(0, i);
const spl = query_str.split('&');
for (const i in spl) {
const kv = spl[i];
const index = kv.indexOf('=');
let key, value;
if (index >= 0) {
key = kv.substr(0, index);
value = kv.substr(index + 1);
}
else {
key = kv;
value = '';
}
if (key !== '') {
key = decodeURI(key);
value = decodeURI(value);
if (this.query[key] === undefined) {
this.query[key] = [value];
}
else {
this.query[key].push(value);
}
}
}
}
i = url.indexOf('/');
if (i === -1) {
host = url;
path = '/';
}
else {
host = url.substr(0, i);
path = url.substr(i);
}
this.host = host;
this.uri = decodeURI(path);
}
if (headers === undefined) {
this.headers = {};
}
else {
this.headers = headers;
}
if (body === undefined) {
this.body = '';
}
else {
this.body = body;
}
}
}
export class Signer {
Key = '';
Secret = '';
constructor(Key, Secret) {
this.Key = Key;
this.Secret = Secret;
}
Sign(r) {
let headerTime = findHeader(r, HeaderXDate);
if (headerTime === null) {
headerTime = getTime();
r.headers[HeaderXDate] = headerTime;
}
if (r.method !== 'PUT' && r.method !== 'PATCH' && r.method !== 'POST') {
r.body = '';
}
let queryString = CanonicalQueryString(r);
if (queryString !== '') {
queryString = '?' + queryString;
}
const options = {
hostname: r.host,
path: encodeURI(r.uri) + queryString,
method: r.method,
headers: r.headers,
};
if (findHeader(r, 'host') === null) {
r.headers.host = r.host;
}
const signedHeaders = SignedHeaders(r);
const canonicalRequest = CanonicalRequest(r, signedHeaders);
const stringToSign = StringToSign(canonicalRequest, headerTime);
const signature = SignStringToSign(stringToSign, this.Secret);
options.headers[HeaderAuthorization] = AuthHeaderValue(signature, this.Key, signedHeaders);
return options;
}
}
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