Synnefo

// Copyright 2011 GRNET S.A. All rights reserved.

// 

// Redistribution and use in source and binary forms, with or

// without modification, are permitted provided that the following

// conditions are met:

// 

//   1. Redistributions of source code must retain the above

//      copyright notice, this list of conditions and the following

//      disclaimer.

// 

//   2. Redistributions in binary form must reproduce the above

//      copyright notice, this list of conditions and the following

//      disclaimer in the documentation and/or other materials

//      provided with the distribution.

// 

// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

// POSSIBILITY OF SUCH DAMAGE.

// 

// The views and conclusions contained in the software and

// documentation are those of the authors and should not be

// interpreted as representing official policies, either expressed

// or implied, of GRNET S.A.

// 

;(function(root){

    var root = root;

    var snf = root.synnefo = root.synnefo || {};

    snf.i18n = {};

    // Logging namespace

    var logging = snf.logging = snf.logging || {};

    // logger object

    var logger = logging.logger = function(ns, level){

        var levels = ["debug", "info", "error"];

        var con = window.console;

        this.level = level || synnefo.logging.level;

        this.ns = ns || "";

        this._log = function(lvl) {

            if (lvl >= this.level && con) {

                var args = Array.prototype.slice.call(arguments[1]);

                var level_name = levels[lvl];

                if (this.ns) {

                    args = ["["+this.ns+"] "].concat(args);

                }

                log = con.log

                if (con[level_name])

                    log = con[level_name]

                try {

                    con && log.apply(con, Array.prototype.slice.call(args));

                } catch (err) {}

            }

        }

        this.debug = function() {

            var args = [0]; args.push.call(args, arguments);

            this._log.apply(this, args);

        }

        this.info = function() {

            var args = [1]; args.push.call(args, arguments);

            this._log.apply(this, args);

        }

        this.error = function() {

            var args = [2]; args.push.call(args, arguments);

            this._log.apply(this, args);

        }

    };

    synnefo.collect_user_data = function() {

        var data = {}

        try {

            data.client = {'browser': $.browser, 'screen': $.extend({}, screen), 'client': $.client}

        } catch (err) { data.client = err }

        try {

            data.calls = synnefo.api.requests;

        } catch (err) { data.calls = err }

        try {

            data.errors = synnefo.api.errors;

        } catch (err) { data.errors = err }

        try {

            data.data = {};

        } catch (err) { data.data = err }

        try {

            data.data.vms = synnefo.storage.vms.toJSON();

        } catch (err) { data.data.vms = err }

        try {

            data.data.networks = synnefo.storage.networks.toJSON();

        } catch (err) { data.data.networks = err }

        //try {

            //data.data.images = synnefo.storage.images.toJSON();

        //} catch (err) { data.data.images = err }

        //try {

            //data.data.flavors = synnefo.storage.flavors.toJSON();

        //} catch (err) { data.data.flavors = err }

        try {

            data.date = new Date;

        } catch (err) { data.date = err }

        return data;

    }

    // default logger level (debug)

    synnefo.logging.level = 0;

    // generic logger

    synnefo.log = new logger({'ns':'SNF'});

    // synnefo config options

    synnefo.config = synnefo.config || {};

    synnefo.config.api_url = "/api/v1.1";

    // Util namespace

    synnefo.util = synnefo.util || {};

    // Extensions and Utility functions

    synnefo.util.ISODateString = function(d){

        function pad(n){

            return n<10 ? '0'+n : n

        }

         return d.getUTCFullYear()+'-'

         + pad(d.getUTCMonth()+1)+'-'

         + pad(d.getUTCDate())+'T'

         + pad(d.getUTCHours())+':'

         + pad(d.getUTCMinutes())+':'

         + pad(d.getUTCSeconds())+'Z'

    }

    synnefo.util.parseHeaders = function(headers) {

        var res = {};

        _.each(headers.split("\n"), function(h) {

            var tuple = h.split(/:(.+)?/);

            if (!tuple.length > 1 || !(tuple[0] && tuple[1])) {

                return;

            }

            res[tuple[0]] = tuple[1]

        })

        return res;

    }

    synnefo.util.parseUri = function(sourceUri) {

        var uriPartNames = ["source","protocol","authority","domain","port","path","directoryPath","fileName","query","anchor"];

        var uriParts = new RegExp("^(?:([^:/?#.]+):)?(?://)?(([^:/?#]*)(?::(\\d*))?)?((/(?:[^?#](?![^?#/]*\\.[^?#/.]+(?:[\\?#]|$)))*/?)?([^?#/]*))?(?:\\?([^#]*))?(?:#(.*))?").exec(sourceUri);

        var uri = {};

        for(var i = 0; i < 10; i++){

            uri[uriPartNames[i]] = (uriParts[i] ? uriParts[i] : "");

        }

        // Always end directoryPath with a trailing backslash if a path was present in the source URI

        // Note that a trailing backslash is NOT automatically inserted within or appended to the "path" key

        if(uri.directoryPath.length > 0){

            uri.directoryPath = uri.directoryPath.replace(/\/?$/, "/");

        }

        return uri;

    }

    synnefo.util.equalHeights = function() {

        var max_height = 0;

        var selectors = _.toArray(arguments);

        _.each(selectors, function(s){

            console.log($(s).height());

        })

        // TODO: implement me

    }

    synnefo.util.ClipHelper = function(wrapper, text, settings) {

        settings = settings || {};

        this.el = $('<div class="clip-copy"></div>');

        wrapper.append(this.el);

        this.clip = $(this.el).zclip(_.extend({

            path: synnefo.config.js_url + "lib/ZeroClipboard.swf",

            copy: text

        }, settings));

    }

    synnefo.util.truncate = function(string, size, append, words) {

        if (string === undefined) { return "" };

        if (string.length <= size) {

            return string;

        }

        if (append === undefined) {

            append = "...";

        }

        if (!append) { append = "" };

        // TODO: implement word truncate

        if (words === undefined) {

            words = false;

        }

        len = size - append.length;

        return string.substring(0, len) + append;

    }

    synnefo.util.readablizeBytes = function(bytes) {

        var s = ['bytes', 'kb', 'MB', 'GB', 'TB', 'PB'];

        var e = Math.floor(Math.log(bytes)/Math.log(1024));

        return (bytes/Math.pow(1024, Math.floor(e))).toFixed(2)+" "+s[e];

    }

    synnefo.i18n.API_ERROR_MESSAGES = {

        'timeout': {

            'message': 'TIMEOUT', 

            'allow_report': false,

            'type': 'Network'

        },

        'error': {

            'message': 'API error'

        }, 

        'abort': {},

        'parserror': {},

        '413': {

            'title': "Account warning"

        }

    }

    synnefo.util.array_diff = function(arr1, arr2) {

        var removed = [];

        var added = [];

        _.each(arr1, function(v) {

            if (arr2.indexOf(v) == -1) {

                removed[removed.length] = v;

            }

        })

        _.each(arr2, function(v) {

            if (arr1.indexOf(v) == -1) {

                added[added.length] = v;

            }

        })

        return {del: removed, add: added};

    }

    synnefo.util.open_window = function(url, name, specs) {

        // default specs

        var opts = _.extend({

            scrollbars: 'no',

            menubar: 'no',

            toolbar: 'no',

            status: 'no',

            height: screen.height,

            width: screen.width,

            fullscreen: 'yes',

            channelmode: 'yes',

            directories: 'no',

            left: 0,

            location: 'no',

            top: 0

        }, opts)

        window.open(url, name, opts);

    }

    synnefo.util.readFileContents = function(f, cb) {

        var reader = new FileReader();

        var start = 0;

        var stop = f.size - 1;

        reader.onloadend = function(e) {

            return cb(e.target.result);

        }

        var data = reader.readAsText(f);

    },

    synnefo.util.generateKey = function(passphrase, length) {

        var passphrase = passphrase || "";

        var length = length || 1024;

        var key = cryptico.generateRSAKey(passphrase, length);

        _.extend(key.prototype, {

            download: function() {

            }

        });

        return key;

    }

    synnefo.util.publicKeyTypesMap = {

        "ecdsa-sha2-nistp256": "ecdsa",

        "ssh-dss" : "dsa",

        "ssh-rsa": "rsa"

    }

    synnefo.util.validatePublicKey = function(key) {

        var b64 = _(key).trim().split("\n").join("").split("\r\n").join("");

        var type = "rsa";

        // in case key starts with something like ssh-rsa

        if (b64.split(" ").length > 1) {

            var parts = key.split(" ");

            // identify key type

            type_key = parts[0];

            if (parseInt(type_key) >= 768) {

                type = "rsa1";

                if (parts[1] == 65537) {

                    if (parts.length == 3) {

                        return [parts[0], parts[1], parts[2]].join(" ")

                    }

                }

                // invalid rsa1 key

                throw "Invalid rsa1 key";

            }

            b64 = parts[1];

            if (!synnefo.util.publicKeyTypesMap[type_key]) { throw "Invalid rsa key (cannot identify encryption)" }

            try {

                var data = $.base64.decode(b64);

                return [parts[0], parts[1]].join(" ");

            } catch (err) {

                throw "Invalid key content";

            }

            throw "Invalid key content";

        }

        // no type defined check rsa

        if (_(b64).startsWith("AAAAB3NzaC1yc2EA")) {

            try {

                var data = $.base64.decode(b64);

                return ["ssh-rsa", b64].join(" ");

            } catch (err) {

                throw "Invalid content for rsa key";

            }

        }

        if (_(b64).startsWith("AAAAE2Vj")) {

            try {

                var data = $.base64.decode(b64);

                return ["ecdsa-sha2-nistp256", b64].join(" ");

            } catch (err) {

                throw "Invalid content for ecdsa key";

            }

        }

        if (_(b64).startsWith("AAAAB3N")) {

            try {

                var data = $.base64.decode(b64);

                return ["ssh-dss", b64].join(" ");

            } catch (err) {

                throw "Invalid content for dss key (" + err + ")";

            }

        }

        throw "Invalid key content";

    }

    // detect flash `like a boss`

    // http://stackoverflow.com/questions/998245/how-can-i-detect-if-flash-is-installed-and-if-not-display-a-hidden-div-that-inf/3336320#3336320 

    synnefo.util.hasFlash = function() {

        var hasFlash = false;

        try {

            var fo = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');

            if (fo) hasFlash = true;

        } catch(e) {

          if(navigator.mimeTypes ["application/x-shockwave-flash"] != undefined) hasFlash = true;

        }

        return hasFlash;

    }

    synnefo.util.promptSaveFile = function(selector, filename, data, options) {

        if (!synnefo.util.hasFlash()) { return };

        try {

            return $(selector).downloadify(_.extend({

                filename: function(){ return filename },

                data: function(){ return data },

                onComplete: function(){},

                onCancel: function(){},

                onError: function(){

                    console.log("ERROR", arguments);

                },

                swf: synnefo.config.media_url + 'js/lib/media/downloadify.swf',

                downloadImage: synnefo.config.images_url + 'download.png',

                transparent: true,

                append: false,

                height:20,

                width: 20,

                dataType: 'string'

          }, options));

        } catch (err) {

            return false;

        }

    }

    synnefo.util.canReadFile = function() {

        if ($.browser.msie) { return false };

        if (window.FileReader && window.File) {

            var f = File.prototype.__proto__;

            if (f.slice || f.webkitSlice || f.mozSlice) {

                return true

            }

        }

        return false;

    }

    synnefo.util.errorList = function() {

        this.initialize = function() {

            this.errors = {};

        }

        this.add = function(key, msg) {

            this.errors[key] = this.errors[key] || [];

            this.errors[key].push(msg);

        }

        this.get = function(key) {

            return this.errors[key];

        }

        this.empty = function() {

            return _.isEmpty(this.errors);

        }

        this.initialize();

    }

    synnefo.util.stacktrace = function() {

        try {

            var obj = {};

            if (window.Error && Error.captureStackTrace) {

                Error.captureStackTrace(obj, synnefo.util.stacktrace);

                return obj.stack;

            } else {

                return printStackTrace().join("<br /><br />");

            }

        } catch (err) {}

        return "";

    },

    synnefo.util.array_combinations = function(arr) {

        if (arr.length == 1) {

            return arr[0];

        } else {

            var result = [];

            // recur with the rest of array

            var allCasesOfRest = synnefo.util.array_combinations(arr.slice(1));  

            for (var i = 0; i < allCasesOfRest.length; i++) {

                for (var j = 0; j < arr[0].length; j++) {

                    result.push(arr[0][j] + "-" + allCasesOfRest[i]);

                }

            }

            return result;

        }

    }

    synnefo.util.parse_api_error = function() {

        if (arguments.length == 1) { arguments = arguments[0] };

        var xhr = arguments[0];

        var error_message = arguments[1];

        var error_thrown = arguments[2];

        var ajax_settings = _.last(arguments) || {};

        var call_settings = ajax_settings.error_params || {};

        var json_data = undefined;

        var critical = ajax_settings.critical === undefined ? true : ajax_settings.critical;

        if (xhr.responseText) {

            try {

                json_data = JSON.parse(xhr.responseText)

            } catch (err) {

                json_data = 'Raw error response contnent (could not parse as JSON):\n\n' + xhr.responseText;

            }

        }

        module = "API"

        try {

            path = synnefo.util.parseUri(ajax_settings.url).path.split("/");

            path.splice(0,3)

            module = path.join("/");

        } catch (err) {

            console.error("cannot identify api error module");

        }

        defaults = {

            'message': 'Api error',

            'type': 'API',

            'allow_report': true,

            'fatal_error': ajax_settings.critical || false,

            'non_critical': !critical

        }

        var code = -1;

        try {

            code = xhr.status || "undefined";

        } catch (err) {console.error(err);}

        var details = "";

        if ([413].indexOf(code) > -1) {

            defaults.non_critical = true;

            defaults.allow_report = false;

            defaults.allow_reload = false;

            error_message = "limit_error";

        }

        if (critical) {

            defaults.allow_report = true;

        }

        if (json_data) {

            if (_.isObject(json_data)) {

                $.each(json_data, function(key, obj) {

                    code = obj.code;

                    details = obj.details;

                    error_message = obj.message;

                })

            } else {

                details = json_data;

            }

        }

        extra = {'URL': ajax_settings.url};

        options = {};

        options = _.extend(options, {'details': details, 'message': error_message, 'ns': module, 'extra_details': extra});

        options = _.extend(options, call_settings);

        options = _.extend(options, synnefo.i18n.API_ERROR_MESSAGES[error_message] || {});

        options = _.extend(options, synnefo.i18n.API_ERROR_MESSAGES[code] || {});

        if (window.ERROR_OVERRIDES && window.ERROR_OVERRIDES[options.message]) {

            options.message = window.ERROR_OVERRIDES[options.message];

        }

        if (code && window.ERROR_OVERRIDES && window.ERROR_OVERRIDES[code]) {

            options.message = window.ERROR_OVERRIDES[code];

        }

        options = _.extend(defaults, options);

        options.code = code;

        return options;

    }

    // Backbone extensions

    //

    // super method

    Backbone.Model.prototype._super = Backbone.Collection.prototype._super = Backbone.View.prototype._super = function(funcName){

        return this.constructor.__super__[funcName].apply(this, _.rest(arguments));

    }

    // simple string format helper 

    // http://stackoverflow.com/questions/610406/javascript-equivalent-to-printf-string-format

    String.prototype.format = function() {

        var formatted = this;

        for (var i = 0; i < arguments.length; i++) {

            var regexp = new RegExp('\\{'+i+'\\}', 'gi');

            formatted = formatted.replace(regexp, arguments[i]);

        }

        return formatted;

    };

    $.fn.setCursorPosition = function(pos) {

        if ($(this).get(0).setSelectionRange) {

          $(this).get(0).setSelectionRange(pos, pos);

        } else if ($(this).get(0).createTextRange) {

          var range = $(this).get(0).createTextRange();

          range.collapse(true);

          range.moveEnd('character', pos);

          range.moveStart('character', pos);

          range.select();

        }

    }

    // trim prototype for IE

    if(typeof String.prototype.trim !== 'function') {

        String.prototype.trim = function() {

            return this.replace(/^\s+|\s+$/g, '');

        }

    }

    // http://stackoverflow.com/questions/499126/jquery-set-cursor-position-in-text-area 

    $.fn.setCursorPosition = function(pos) {

        // not all browsers support setSelectionRange

        // put it in try/catch, fallback to no text selection

        try {

            if ($(this).get(0).setSelectionRange) {

              $(this).get(0).setSelectionRange(pos, pos);

            } else if ($(this).get(0).createTextRange) {

              var range = $(this).get(0).createTextRange();

              range.collapse(true);

              range.moveEnd('character', pos);

              range.moveStart('character', pos);

              range.select();

            }

        } catch (err) {

        }

    }

    // indexOf prototype for IE

    if (!Array.prototype.indexOf) {

      Array.prototype.indexOf = function(elt /*, from*/) {

        var len = this.length;

        var from = Number(arguments[1]) || 0;

        from = (from < 0)

             ? Math.ceil(from)

             : Math.floor(from);

        if (from < 0)

          from += len;

        for (; from < len; from++) {

          if (from in this &&

              this[from] === elt)

            return from;

        }

        return -1;

      };

    }

})(this);