MAXUtils.js

'use strict';

/**
 * @ngdoc function
 * @name maxcontrolApp.service:MAXClient
 * @description
 * #
 */

/* jshint ignore:start */
angular.module('MAXClient')

.service('MAXUtils', [function() {
    var self = this;
    self.sha1 = function(msg) {
        function rotate_left(n, s) {
            var t4 = (n << s) | (n >>> (32 - s));
            return t4;
        }

        function cvt_hex(val) {
            var str = '';
            var i;
            var v;
            for (i = 7; i >= 0; i--) {
                v = (val >>> (i * 4)) & 0x0f;
                str += v.toString(16);
            }
            return str;
        }

        function Utf8Encode(string) {
            string = string.replace(/\r\n/g, "\n");
            var utftext = '';
            for (var n = 0; n < string.length; n++) {
                var c = string.charCodeAt(n);
                if (c < 128) {
                    utftext += String.fromCharCode(c);
                } else if ((c > 127) && (c < 2048)) {
                    utftext += String.fromCharCode((c >> 6) | 192);
                    utftext += String.fromCharCode((c & 63) | 128);
                } else {
                    utftext += String.fromCharCode((c >> 12) | 224);
                    utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                    utftext += String.fromCharCode((c & 63) | 128);
                }
            }
            return utftext;
        }
        var blockstart;
        var i, j;
        var W = new Array(80);
        var H0 = 0x67452301;
        var H1 = 0xEFCDAB89;
        var H2 = 0x98BADCFE;
        var H3 = 0x10325476;
        var H4 = 0xC3D2E1F0;
        var A, B, C, D, E;
        var temp;
        msg = Utf8Encode(msg);
        var msg_len = msg.length;
        var word_array = [];
        for (i = 0; i < msg_len - 3; i += 4) {
            j = msg.charCodeAt(i) << 24 | msg.charCodeAt(i + 1) << 16 | msg.charCodeAt(i + 2) << 8 | msg.charCodeAt(i + 3);
            word_array.push(j);
        }
        switch (msg_len % 4) {
            case 0:
                i = 0x080000000;
                break;
            case 1:
                i = msg.charCodeAt(msg_len - 1) << 24 | 0x0800000;
                break;
            case 2:
                i = msg.charCodeAt(msg_len - 2) << 24 | msg.charCodeAt(msg_len - 1) << 16 | 0x08000;
                break;
            case 3:
                i = msg.charCodeAt(msg_len - 3) << 24 | msg.charCodeAt(msg_len - 2) << 16 | msg.charCodeAt(msg_len - 1) << 8 | 0x80;
                break;
        }
        word_array.push(i);
        while ((word_array.length % 16) !== 14) {
            word_array.push(0);
        }
        word_array.push(msg_len >>> 29);
        word_array.push((msg_len << 3) & 0x0ffffffff);
        for (blockstart = 0; blockstart < word_array.length; blockstart += 16) {
            for (i = 0; i < 16; i++) {
                W[i] = word_array[blockstart + i];
            }
            for (i = 16; i <= 79; i++) {
                W[i] = rotate_left(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);
            }
            A = H0;
            B = H1;
            C = H2;
            D = H3;
            E = H4;
            for (i = 0; i <= 19; i++) {
                temp = (rotate_left(A, 5) + ((B & C) | (~B & D)) + E + W[i] + 0x5A827999) & 0x0ffffffff;
                E = D;
                D = C;
                C = rotate_left(B, 30);
                B = A;
                A = temp;
            }
            for (i = 20; i <= 39; i++) {
                temp = (rotate_left(A, 5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff;
                E = D;
                D = C;
                C = rotate_left(B, 30);
                B = A;
                A = temp;
            }
            for (i = 40; i <= 59; i++) {
                temp = (rotate_left(A, 5) + ((B & C) | (B & D) | (C & D)) + E + W[i] + 0x8F1BBCDC) & 0x0ffffffff;
                E = D;
                D = C;
                C = rotate_left(B, 30);
                B = A;
                A = temp;
            }
            for (i = 60; i <= 79; i++) {
                temp = (rotate_left(A, 5) + (B ^ C ^ D) + E + W[i] + 0xCA62C1D6) & 0x0ffffffff;
                E = D;
                D = C;
                C = rotate_left(B, 30);
                B = A;
                A = temp;
            }
            H0 = (H0 + A) & 0x0ffffffff;
            H1 = (H1 + B) & 0x0ffffffff;
            H2 = (H2 + C) & 0x0ffffffff;
            H3 = (H3 + D) & 0x0ffffffff;
            H4 = (H4 + E) & 0x0ffffffff;
        }
        temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4);
        return temp.toLowerCase();
    }
    return self;
}]);
/* jshint ignore:end */