certd/packages/libs/lib-jdcloud/src/lib/util.js

var util = {
  isBrowser: function isBrowser () {
    return process && process.browser
  },
  isNode: function isNode () {
    return !util.isBrowser()
  },
  uriEscape: function uriEscape (string) {
    var output = encodeURIComponent(string)
    output = output.replace(/[^A-Za-z0-9_.~\-%]+/g, escape)

    // AWS percent-encodes some extra non-standard characters in a URI
    output = output.replace(/[*]/g, function (ch) {
      return (
        '%' +
        ch
          .charCodeAt(0)
          .toString(16)
          .toUpperCase()
      )
    })

    return output
  },
  uriEscapePath: function uriEscapePath (string) {
    var parts = []
    util.arrayEach(string.split('/'), function (part) {
      parts.push(util.uriEscape(part))
    })
    return parts.join('/')
  },
  abort: {},
  each: function each (object, iterFunction) {
    for (var key in object) {
      if (Object.prototype.hasOwnProperty.call(object, key)) {
        var ret = iterFunction.call(this, key, object[key])
        if (ret === util.abort) break
      }
    }
  },

  arrayEach: function arrayEach (array, iterFunction) {
    for (var idx in array) {
      if (Object.prototype.hasOwnProperty.call(array, idx)) {
        var ret = iterFunction.call(this, array[idx], parseInt(idx, 10))
        if (ret === util.abort) break
      }
    }
  },
  arraySliceFn: function arraySliceFn (obj) {
    var fn = obj.slice || obj.webkitSlice || obj.mozSlice
    return typeof fn === 'function' ? fn : null
  },
  queryParamsToString: function queryParamsToString (params) {
    var items = []
    var escape = util.uriEscape
    var sortedKeys = Object.keys(params).sort()

    util.arrayEach(sortedKeys, function (name) {
      var value = params[name]
      var ename = escape(name)
      var result = ename + '='
      if (Array.isArray(value)) {
        var vals = []
        util.arrayEach(value, function (item) {
          vals.push(escape(item))
        })
        result = ename + '=' + vals.sort().join('&' + ename + '=')
      } else if (value !== undefined && value !== null) {
        result = ename + '=' + escape(value)
      }
      items.push(result)
    })

    return items.join('&')
  },
  date: {
    getDate () {
      return new Date()
    },
    iso8601: function iso8601 (date) {
      if (date === undefined) {
        date = util.date.getDate()
      }
      return date.toISOString().replace(/\.\d{3}Z$/, 'Z')
    }
  },
  crypto: {
    /* eslint-disable no-use-before-define */
    crc32Table: [
      0x00000000,
      0x77073096,
      0xee0e612c,
      0x990951ba,
      0x076dc419,
      0x706af48f,
      0xe963a535,
      0x9e6495a3,
      0x0edb8832,
      0x79dcb8a4,
      0xe0d5e91e,
      0x97d2d988,
      0x09b64c2b,
      0x7eb17cbd,
      0xe7b82d07,
      0x90bf1d91,
      0x1db71064,
      0x6ab020f2,
      0xf3b97148,
      0x84be41de,
      0x1adad47d,
      0x6ddde4eb,
      0xf4d4b551,
      0x83d385c7,
      0x136c9856,
      0x646ba8c0,
      0xfd62f97a,
      0x8a65c9ec,
      0x14015c4f,
      0x63066cd9,
      0xfa0f3d63,
      0x8d080df5,
      0x3b6e20c8,
      0x4c69105e,
      0xd56041e4,
      0xa2677172,
      0x3c03e4d1,
      0x4b04d447,
      0xd20d85fd,
      0xa50ab56b,
      0x35b5a8fa,
      0x42b2986c,
      0xdbbbc9d6,
      0xacbcf940,
      0x32d86ce3,
      0x45df5c75,
      0xdcd60dcf,
      0xabd13d59,
      0x26d930ac,
      0x51de003a,
      0xc8d75180,
      0xbfd06116,
      0x21b4f4b5,
      0x56b3c423,
      0xcfba9599,
      0xb8bda50f,
      0x2802b89e,
      0x5f058808,
      0xc60cd9b2,
      0xb10be924,
      0x2f6f7c87,
      0x58684c11,
      0xc1611dab,
      0xb6662d3d,
      0x76dc4190,
      0x01db7106,
      0x98d220bc,
      0xefd5102a,
      0x71b18589,
      0x06b6b51f,
      0x9fbfe4a5,
      0xe8b8d433,
      0x7807c9a2,
      0x0f00f934,
      0x9609a88e,
      0xe10e9818,
      0x7f6a0dbb,
      0x086d3d2d,
      0x91646c97,
      0xe6635c01,
      0x6b6b51f4,
      0x1c6c6162,
      0x856530d8,
      0xf262004e,
      0x6c0695ed,
      0x1b01a57b,
      0x8208f4c1,
      0xf50fc457,
      0x65b0d9c6,
      0x12b7e950,
      0x8bbeb8ea,
      0xfcb9887c,
      0x62dd1ddf,
      0x15da2d49,
      0x8cd37cf3,
      0xfbd44c65,
      0x4db26158,
      0x3ab551ce,
      0xa3bc0074,
      0xd4bb30e2,
      0x4adfa541,
      0x3dd895d7,
      0xa4d1c46d,
      0xd3d6f4fb,
      0x4369e96a,
      0x346ed9fc,
      0xad678846,
      0xda60b8d0,
      0x44042d73,
      0x33031de5,
      0xaa0a4c5f,
      0xdd0d7cc9,
      0x5005713c,
      0x270241aa,
      0xbe0b1010,
      0xc90c2086,
      0x5768b525,
      0x206f85b3,
      0xb966d409,
      0xce61e49f,
      0x5edef90e,
      0x29d9c998,
      0xb0d09822,
      0xc7d7a8b4,
      0x59b33d17,
      0x2eb40d81,
      0xb7bd5c3b,
      0xc0ba6cad,
      0xedb88320,
      0x9abfb3b6,
      0x03b6e20c,
      0x74b1d29a,
      0xead54739,
      0x9dd277af,
      0x04db2615,
      0x73dc1683,
      0xe3630b12,
      0x94643b84,
      0x0d6d6a3e,
      0x7a6a5aa8,
      0xe40ecf0b,
      0x9309ff9d,
      0x0a00ae27,
      0x7d079eb1,
      0xf00f9344,
      0x8708a3d2,
      0x1e01f268,
      0x6906c2fe,
      0xf762575d,
      0x806567cb,
      0x196c3671,
      0x6e6b06e7,
      0xfed41b76,
      0x89d32be0,
      0x10da7a5a,
      0x67dd4acc,
      0xf9b9df6f,
      0x8ebeeff9,
      0x17b7be43,
      0x60b08ed5,
      0xd6d6a3e8,
      0xa1d1937e,
      0x38d8c2c4,
      0x4fdff252,
      0xd1bb67f1,
      0xa6bc5767,
      0x3fb506dd,
      0x48b2364b,
      0xd80d2bda,
      0xaf0a1b4c,
      0x36034af6,
      0x41047a60,
      0xdf60efc3,
      0xa867df55,
      0x316e8eef,
      0x4669be79,
      0xcb61b38c,
      0xbc66831a,
      0x256fd2a0,
      0x5268e236,
      0xcc0c7795,
      0xbb0b4703,
      0x220216b9,
      0x5505262f,
      0xc5ba3bbe,
      0xb2bd0b28,
      0x2bb45a92,
      0x5cb36a04,
      0xc2d7ffa7,
      0xb5d0cf31,
      0x2cd99e8b,
      0x5bdeae1d,
      0x9b64c2b0,
      0xec63f226,
      0x756aa39c,
      0x026d930a,
      0x9c0906a9,
      0xeb0e363f,
      0x72076785,
      0x05005713,
      0x95bf4a82,
      0xe2b87a14,
      0x7bb12bae,
      0x0cb61b38,
      0x92d28e9b,
      0xe5d5be0d,
      0x7cdcefb7,
      0x0bdbdf21,
      0x86d3d2d4,
      0xf1d4e242,
      0x68ddb3f8,
      0x1fda836e,
      0x81be16cd,
      0xf6b9265b,
      0x6fb077e1,
      0x18b74777,
      0x88085ae6,
      0xff0f6a70,
      0x66063bca,
      0x11010b5c,
      0x8f659eff,
      0xf862ae69,
      0x616bffd3,
      0x166ccf45,
      0xa00ae278,
      0xd70dd2ee,
      0x4e048354,
      0x3903b3c2,
      0xa7672661,
      0xd06016f7,
      0x4969474d,
      0x3e6e77db,
      0xaed16a4a,
      0xd9d65adc,
      0x40df0b66,
      0x37d83bf0,
      0xa9bcae53,
      0xdebb9ec5,
      0x47b2cf7f,
      0x30b5ffe9,
      0xbdbdf21c,
      0xcabac28a,
      0x53b39330,
      0x24b4a3a6,
      0xbad03605,
      0xcdd70693,
      0x54de5729,
      0x23d967bf,
      0xb3667a2e,
      0xc4614ab8,
      0x5d681b02,
      0x2a6f2b94,
      0xb40bbe37,
      0xc30c8ea1,
      0x5a05df1b,
      0x2d02ef8d
    ],
    /* eslint-disable no-use-before-define */

    crc32: function crc32 (data) {
      var tbl = util.crypto.crc32Table
      var crc = 0 ^ -1

      if (typeof data === 'string') {
        data = new util.Buffer(data)
      }

      for (var i = 0; i < data.length; i++) {
        var code = data.readUInt8(i)
        crc = (crc >>> 8) ^ tbl[(crc ^ code) & 0xff]
      }
      return (crc ^ -1) >>> 0
    },

    hmac: function hmac (key, string, digest, fn) {
      if (!digest) digest = 'binary'
      if (digest === 'buffer') {
        digest = undefined
      }
      if (!fn) fn = 'sha256'
      if (typeof string === 'string') string = new util.Buffer(string)
      return util.crypto.lib
        .createHmac(fn, key)
        .update(string)
        .digest(digest)
    },

    md5: function md5 (data, digest, callback) {
      return util.crypto.hash('md5', data, digest, callback)
    },

    sha256: function sha256 (data, digest, callback) {
      return util.crypto.hash('sha256', data, digest, callback)
    },

    hash: function (algorithm, data, digest, callback) {
      var hash = util.crypto.createHash(algorithm)
      if (!digest) {
        digest = 'binary'
      }
      if (digest === 'buffer') {
        digest = undefined
      }
      if (typeof data === 'string') data = new util.Buffer(data)
      var sliceFn = util.arraySliceFn(data)
      var isBuffer = util.Buffer.isBuffer(data)
      // Identifying objects with an ArrayBuffer as buffers
      if (
        util.isBrowser() &&
        typeof ArrayBuffer !== 'undefined' &&
        data &&
        data.buffer instanceof ArrayBuffer
      ) {
        isBuffer = true
      }

      if (
        callback &&
        typeof data === 'object' &&
        typeof data.on === 'function' &&
        !isBuffer
      ) {
        data.on('data', function (chunk) {
          hash.update(chunk)
        })
        data.on('error', function (err) {
          callback(err)
        })
        data.on('end', function () {
          callback(null, hash.digest(digest))
        })
      } else if (
        callback &&
        sliceFn &&
        !isBuffer &&
        typeof FileReader !== 'undefined'
      ) {
        // this might be a File/Blob
        var index = 0
        var size = 1024 * 512
        var reader = new FileReader()
        reader.onerror = function () {
          callback(new Error('Failed to read data.'))
        }
        reader.onload = function () {
          var buf = new util.Buffer(new Uint8Array(reader.result))
          hash.update(buf)
          index += buf.length
          reader._continueReading()
        }
        reader._continueReading = function () {
          if (index >= data.size) {
            callback(null, hash.digest(digest))
            return
          }

          var back = index + size
          if (back > data.size) back = data.size
          reader.readAsArrayBuffer(sliceFn.call(data, index, back))
        }

        reader._continueReading()
      } else {
        if (util.isBrowser() && typeof data === 'object' && !isBuffer) {
          data = new util.Buffer(new Uint8Array(data))
        }
        var out = hash.update(data).digest(digest)
        if (callback) callback(null, out)
        return out
      }
    },

    toHex: function toHex (data) {
      var out = []
      for (var i = 0; i < data.length; i++) {
        out.push(('0' + data.charCodeAt(i).toString(16)).substr(-2, 2))
      }
      return out.join('')
    },

    createHash: function createHash (algorithm) {
      return util.crypto.lib.createHash(algorithm)
    }
  }
}

module.exports = util