tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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utils.js (2447B)

      1 /**
      2 * Create an absolute URL from `options` and defaulting unspecified properties to `window.location`.
      3 * @param {Object} options - a `Location`-like object
      4 * @param {string} options.hostname
      5 * @param {string} options.subdomain - prepend subdomain to the hostname
      6 * @param {string} options.port
      7 * @param {string} options.path
      8 * @param {string} options.query
      9 * @param {string} options.hash
     10 * @returns {string}
     11 */
     12 function make_absolute_url(options) {
     13    var loc = window.location;
     14    var protocol = get(options, "protocol", loc.protocol);
     15    if (protocol[protocol.length - 1] != ":") {
     16        protocol += ":";
     17    }
     18 
     19    var hostname = get(options, "hostname", loc.hostname);
     20 
     21    var subdomain = get(options, "subdomain");
     22    if (subdomain) {
     23        hostname = subdomain + "." + hostname;
     24    }
     25 
     26    var port = get(options, "port", loc.port)
     27    var path = get(options, "path", loc.pathname);
     28    var query = get(options, "query", loc.search);
     29    var hash = get(options, "hash", loc.hash)
     30 
     31    var url = protocol + "//" + hostname;
     32    if (port) {
     33        url += ":" + port;
     34    }
     35 
     36    if (path[0] != "/") {
     37        url += "/";
     38    }
     39    url += path;
     40    if (query) {
     41        if (query[0] != "?") {
     42            url += "?";
     43        }
     44        url += query;
     45    }
     46    if (hash) {
     47        if (hash[0] != "#") {
     48            url += "#";
     49        }
     50        url += hash;
     51    }
     52    return url;
     53 }
     54 
     55 /** @private */
     56 function get(obj, name, default_val) {
     57    if (obj.hasOwnProperty(name)) {
     58        return obj[name];
     59    }
     60    return default_val;
     61 }
     62 
     63 /**
     64 * Generate a new UUID.
     65 * @returns {string}
     66 */
     67 function token() {
     68    var uuid = [to_hex(rand_int(32), 8),
     69                to_hex(rand_int(16), 4),
     70                to_hex(0x4000 | rand_int(12), 4),
     71                to_hex(0x8000 | rand_int(14), 4),
     72                to_hex(rand_int(48), 12)].join("-")
     73    return uuid;
     74 }
     75 
     76 /** @private */
     77 function rand_int(bits) {
     78    if (bits < 1 || bits > 53) {
     79        throw new TypeError();
     80    } else {
     81        if (bits >= 1 && bits <= 30) {
     82            return 0 | ((1 << bits) * Math.random());
     83        } else {
     84            var high = (0 | ((1 << (bits - 30)) * Math.random())) * (1 << 30);
     85            var low = 0 | ((1 << 30) * Math.random());
     86            return  high + low;
     87        }
     88    }
     89 }
     90 
     91 /** @private */
     92 function to_hex(x, length) {
     93    var rv = x.toString(16);
     94    while (rv.length < length) {
     95        rv = "0" + rv;
     96    }
     97    return rv;
     98 }