session.js

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elgg.provide('elgg.session');

elgg.session.cookie = function(name, value, options) {
    var cookies = [], cookie = [], i = 0, date, valid = true;

    //elgg.session.cookie()
    if (elgg.isUndefined(name)) {
        return document.cookie;
    }

    //elgg.session.cookie(name)
    if (elgg.isUndefined(value)) {
        if (document.cookie && document.cookie !== '') {
            cookies = document.cookie.split(';');
            for (i = 0; i < cookies.length; i += 1) {
                cookie = jQuery.trim(cookies[i]).split('=');
                if (cookie[0] === name) {
                    return decodeURIComponent(cookie[1]);
                }
            }
        }
        return undefined;
    }

    // elgg.session.cookie(name, value[, opts])
    options = options || {};

    if (elgg.isNull(value)) {
        value = '';
        options.expires = -1;
    }

    cookies.push(name + '=' + value);

    if (options.expires) {
        if (elgg.isNumber(options.expires)) {
            date = new Date();
            date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
        } else if (options.expires.toUTCString) {
            date = options.expires;
        }

        if (date) {
            cookies.push('expires=' + date.toUTCString());
        }
    }

    // CAUTION: Needed to parenthesize options.path and options.domain
    // in the following expressions, otherwise they evaluate to undefined
    // in the packed version for some reason.
    if (options.path) {
        cookies.push('path=' + (options.path));
    }

    if (options.domain) {
        cookies.push('domain=' + (options.domain));
    }

    if (options.secure) {
        cookies.push('secure');
    }

    document.cookie = cookies.join('; ');
};

elgg.get_logged_in_user_entity = function() {
    return elgg.session.user;
};

elgg.get_logged_in_user_guid = function() {
    var user = elgg.get_logged_in_user_entity();
    return user ? user.guid : 0;
};

elgg.is_logged_in = function() {
    return (elgg.get_logged_in_user_entity() instanceof elgg.ElggUser);
};

elgg.is_admin_logged_in = function() {
    var user = elgg.get_logged_in_user_entity();
    return (user instanceof elgg.ElggUser) && user.isAdmin();
};

jQuery.cookie = elgg.session.cookie;

// This just has to happen after ElggUser is defined, however it's probably
// better to have this procedural code here than in ElggUser.js
if (elgg.session.user) {
    elgg.session.user = new elgg.ElggUser(elgg.session.user);
}