angular-jwt
Version:
Library to help you work with JWTs on AngularJS
111 lines (102 loc) • 5.39 kB
JavaScript
/**
* The content from this file was directly lifted from Angular. It is
* unfortunately not a public API, so the best we can do is copy it.
*
* Angular References:
* https://github.com/angular/angular.js/issues/3299
* https://github.com/angular/angular.js/blob/d077966ff1ac18262f4615ff1a533db24d4432a7/src/ng/urlUtils.js
*/
angular.module('angular-jwt.interceptor')
.service('urlUtils', function () {
// NOTE: The usage of window and document instead of $window and $document here is
// deliberate. This service depends on the specific behavior of anchor nodes created by the
// browser (resolving and parsing URLs) that is unlikely to be provided by mock objects and
// cause us to break tests. In addition, when the browser resolves a URL for XHR, it
// doesn't know about mocked locations and resolves URLs to the real document - which is
// exactly the behavior needed here. There is little value is mocking these out for this
// service.
var urlParsingNode = document.createElement("a");
var originUrl = urlResolve(window.location.href);
/**
*
* Implementation Notes for non-IE browsers
* ----------------------------------------
* Assigning a URL to the href property of an anchor DOM node, even one attached to the DOM,
* results both in the normalizing and parsing of the URL. Normalizing means that a relative
* URL will be resolved into an absolute URL in the context of the application document.
* Parsing means that the anchor node's host, hostname, protocol, port, pathname and related
* properties are all populated to reflect the normalized URL. This approach has wide
* compatibility - Safari 1+, Mozilla 1+, Opera 7+,e etc. See
* http://www.aptana.com/reference/html/api/HTMLAnchorElement.html
*
* Implementation Notes for IE
* ---------------------------
* IE <= 10 normalizes the URL when assigned to the anchor node similar to the other
* browsers. However, the parsed components will not be set if the URL assigned did not specify
* them. (e.g. if you assign a.href = "foo", then a.protocol, a.host, etc. will be empty.) We
* work around that by performing the parsing in a 2nd step by taking a previously normalized
* URL (e.g. by assigning to a.href) and assigning it a.href again. This correctly populates the
* properties such as protocol, hostname, port, etc.
*
* References:
* http://developer.mozilla.org/en-US/docs/Web/API/HTMLAnchorElement
* http://www.aptana.com/reference/html/api/HTMLAnchorElement.html
* http://url.spec.whatwg.org/#urlutils
* https://github.com/angular/angular.js/pull/2902
* http://james.padolsey.com/javascript/parsing-urls-with-the-dom/
*
* @kind function
* @param {string} url The URL to be parsed.
* @description Normalizes and parses a URL.
* @returns {object} Returns the normalized URL as a dictionary.
*
* | member name | Description |
* |---------------|----------------|
* | href | A normalized version of the provided URL if it was not an absolute URL |
* | protocol | The protocol including the trailing colon |
* | host | The host and port (if the port is non-default) of the normalizedUrl |
* | search | The search params, minus the question mark |
* | hash | The hash string, minus the hash symbol
* | hostname | The hostname
* | port | The port, without ":"
* | pathname | The pathname, beginning with "/"
*
*/
function urlResolve(url) {
var href = url;
// Normalize before parse. Refer Implementation Notes on why this is
// done in two steps on IE.
urlParsingNode.setAttribute("href", href);
href = urlParsingNode.href;
urlParsingNode.setAttribute('href', href);
// urlParsingNode provides the UrlUtils interface - http://url.spec.whatwg.org/#urlutils
return {
href: urlParsingNode.href,
protocol: urlParsingNode.protocol ? urlParsingNode.protocol.replace(/:$/, '') : '',
host: urlParsingNode.host,
search: urlParsingNode.search ? urlParsingNode.search.replace(/^\?/, '') : '',
hash: urlParsingNode.hash ? urlParsingNode.hash.replace(/^#/, '') : '',
hostname: urlParsingNode.hostname,
port: urlParsingNode.port,
pathname: (urlParsingNode.pathname.charAt(0) === '/')
? urlParsingNode.pathname
: '/' + urlParsingNode.pathname
};
}
/**
* Parse a request URL and determine whether this is a same-origin request as the application document.
*
* @param {string|object} requestUrl The url of the request as a string that will be resolved
* or a parsed URL object.
* @returns {boolean} Whether the request is for the same origin as the application document.
*/
function urlIsSameOrigin(requestUrl) {
var parsed = (angular.isString(requestUrl)) ? urlResolve(requestUrl) : requestUrl;
return (parsed.protocol === originUrl.protocol &&
parsed.host === originUrl.host);
}
return {
urlResolve: urlResolve,
isSameOrigin: urlIsSameOrigin
};
});