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Location.getHref() throws MalformedURLException when location is "about:blank#foo"
See original GitHub issueProblem in brief
java.net.MalformedURLException: unknown protocol: about is thrown by Location.getHref() when the location is about:blank and location.hash is also set.
Reproducing
The code below:
- Prints
about:blank#fooin Chrome / Firefox / Edge. - Prints
about:blankin IE11. - Throws the aforementioned
java.net.MalformedURLException: unknown protocol: aboutexception in HtmlUnit 2.46.0.
<html>
<head>
<script>
function test() {
var iframe = document.getElementsByTagName('IFRAME')[0];
iframe.contentWindow.location.hash = 'foo';
console.log(iframe.contentWindow.location.href); // "about:blank#foo"
}
</script>
</head>
<body onload="test()">
<iframe src="about:blank"></iframe>
</body>
</html>
Details
The exception is thrown by this call to UrlUtils.getUrlWithNewRef() because it is internally using a version of new URL(...) that does not support the about protocol. Incidentally, the variable url itself initially holds “about:blank” because unlike getUrlWithNew*(), UrlUtils’s other methods toUrl*() do support about:blank.
Possible fixes
Solution 1: Patch Location.getHref() with a hack for about:blank
public String getHref() {
final Page page = window_.getWebWindow().getEnclosedPage();
...
try {
URL url = page.getUrl();
final boolean encodeHash = getBrowserVersion().hasFeature(JS_LOCATION_HREF_HASH_IS_ENCODED);
final String hash = getHash(encodeHash);
if (hash != null) {
+ if ("about:blank".equals(url.toExternalForm())) {
+ return url.toExternalForm() + "#" + hash;
+ }
url = UrlUtils.getUrlWithNewRef(url, hash);
}
String s = url.toExternalForm();
Solution 2: Change UrlUtils to better support about:blank across all its methods
private static URL createNewUrl(final String protocol, final String authority,
final String path, final String ref, final String query) throws MalformedURLException {
...
if (ref != null) {
if (ref.isEmpty() || ref.charAt(0) != '#') {
s.append('#');
}
s.append(ref);
}
- return new URL(s.toString());
+ return toUrlUnsafe(s.toString());
}
Issue Analytics
- State:
- Created 3 years ago
- Comments:5 (5 by maintainers)
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i think this is fixed now; made a new Snapshot build available. Please reopen or open a new issue if you still have problems.
Many thanks for all the detailed reports and your support.
I can only reproduce this with chrome/edge, in FF i get a security error - do you agree?
The exception should be fixed - please have a look at the latest snapshot (will be available soon - see twitter).