How to fetch Bukkit versions from a Java application?

I've tried using Jsoup to connect to https://dl.bukkit.org/downloads/craftbukkit/, but I get a

Code:java

sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

I'm trying to get the latest recommended, beta and dev versions. Any ideas?

 

Use the ServerMods API

http://wiki.bukkit.org/ServerMods_API

EDIT: Sorry I misread, nevermind. I'm not sure how to do that, but there is probably some way to parse the Maven repository XML files to get what you want.

 

Hello Assist ,

the problem here is that the JRE doesn't find a key in the keystore. You can either install the key and point the JVM to your keystore or do it the hacky way and implement a TrustManager which simply trusts everything.

Code:java

 
        // Create a trust manager that does not validate certificate chains
        TrustManager[] trustAllCerts = new TrustManager[] {new X509TrustManager() {
            public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {};
            public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {};
            public X509Certificate[] getAcceptedIssuers() {return null;};
        }};
 
        // Install the all-trusting trust manager
        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, trustAllCerts, new java.security.SecureRandom());
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
 
        // Create all-trusting host name verifier
        HostnameVerifier allHostsValid = new HostnameVerifier() {
            @Override
            public boolean verify(String hostname, SSLSession session) {
                return true;
            }
        };
 
        // Install the all-trusting host verifier
        HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);
 

As soon as you've successfully compromised the security of the JVM you can access HTTPS URLs like any other URL.

This code

Code:java

 
        String u = "[url]https://dl.bukkit.org/downloads/craftbukkit/[/url]";
        URL url = new URL(u);
        Document doc = Jsoup.parse(url.openStream(), "UTF-8", u);
 
        Elements elements = new Elements();
        elements.addAll(doc.getElementsByClass("chan-rb"));
        elements.addAll(doc.getElementsByClass("chan-beta"));
        elements.addAll(doc.getElementsByClass("chan-dev"));
 
        for (Element el1 : elements) {
            for (Element el2 : el1.getElementsByTag("span")){
                System.out.println(el2.text());
            }
        }

results in this output:

Code:text

 
1.6.4-R2.0
1.7.2-R0.3
1.7.8-R0.1
 

 

obnoxint
Thanks! Works like a charm.