captcha-generator/dist/index.js

Production image verification code by jpeglib

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };

exports.generate = generate;
exports.createPlaintext = createPlaintext;

var _fs = require('fs');

var _fs2 = _interopRequireDefault(_fs);

var _path = require('path');

var _path2 = _interopRequireDefault(_path);

var _hcaptha = require('../build/Release/hcaptha.node');

var _hcaptha2 = _interopRequireDefault(_hcaptha);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var tmpPath = _path2.default.join(__dirname, "/tmp/");

!_fs2.default.existsSync(tmpPath) && _fs2.default.mkdirSync(tmpPath);

var defaultDictionary = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", /*"l",*/"m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", "H", /*"I",*/"J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"];
var platform = process.platform;

function generate() {
    var text = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : createPlaintext();
    var width = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 240;
    var height = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 112;
    var charOffset = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 0;
    var fontSize = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 100;

    if ((typeof text === 'undefined' ? 'undefined' : _typeof(text)) === "object") {
        var _text = text,
            t = _text.text,
            w = _text.width,
            h = _text.height,
            c = _text.charOffset,
            f = _text.fontSize;
        text = t;
        width = w;
        height = h;
        charOffset = c;
        fontSize = f;
    }

    var isJpeg = ~["linux"].indexOf(platform) ? 1 : 0;
    var tmpFilePath = _path2.default.join(tmpPath, '/' + Math.random() + '.' + (isJpeg ? "jpeg" : "bmp"));
    var defaultQuality = 60;
    charOffset = charOffset || width / text.length;

    _hcaptha2.default.create(text, tmpFilePath, text.length, width, height, charOffset, defaultQuality, isJpeg, fontSize);

    var buf = _fs2.default.readFileSync(tmpFilePath);
    _fs2.default.unlinkSync(tmpFilePath);

    return CImg(buf, text, isJpeg ? "jpeg" : "bmp");
}

function createPlaintext() {
    var count = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 5;
    var dictionary = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : defaultDictionary;

    if (isNaN(count) || !(dictionary instanceof Array) || dictionary.length === 0) {
        throw Error("Parameter error");
    }

    var i = 0,
        len = dictionary.length,
        textList = "";
    while (i++ < count) {
        textList += dictionary[parseInt(Math.random() * len) % len];
    }

    return textList;
}

function CImg(buf, text, type) {
    var obj = {};

    return Object.defineProperties(obj, {
        buffer: {
            get: function get() {
                return buf;
            },
            enumerable: true,
            configurable: false
        },
        plaintext: {
            get: function get() {
                return text;
            },
            enumerable: true,
            configurable: false
        },
        imageType: {
            get: function get() {
                return 'image/' + type;
            },
            enumerable: true,
            configurable: false
        },
        base64: {
            get: function get() {
                return 'data:image/' + type + ';base64,' + buf.toString("base64");
            },
            enumerable: true,
            configurable: false
        }

    });
}

//hrobj.create("abcde", __dirname + "/c/" + start + ".bmp", 5, 240, 112, 50, 50, 0, 110);