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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