1 files changed, 101 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedResource.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedResource.java
new file mode 100644
index 000000000..6077db606
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedResource.java
@@ -0,0 +1,101 @@
+package org.sufficientlysecure.keychain.pgp.linked;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.pgp.linked.resources.DnsResource;
+import org.sufficientlysecure.keychain.pgp.linked.resources.GenericHttpsResource;
+import org.sufficientlysecure.keychain.pgp.linked.resources.UnknownResource;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.net.URI;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.regex.Pattern;
+
+public abstract class LinkedResource {
+
+    protected final URI mSubUri;
+    protected final Set<String> mFlags;
+    protected final HashMap<String,String> mParams;
+
+    static Pattern magicPattern =
+            Pattern.compile("\\[Verifying my PGP key: openpgp4fpr:([a-zA-Z0-9]+)#([a-zA-Z0-9]+)\\]");
+
+    protected LinkedResource(Set<String> flags, HashMap<String, String> params, URI uri) {
+        mFlags = flags;
+        mParams = params;
+        mSubUri = uri;
+    }
+
+    public abstract URI toUri();
+
+    public Set<String> getFlags () {
+        return new HashSet<>(mFlags);
+    }
+
+    public HashMap<String,String> getParams () {
+        return new HashMap<>(mParams);
+    }
+
+    protected static LinkedCookieResource fromUri (URI uri) {
+
+        if ("pgpid+cookie".equals(uri.getScheme())) {
+            Log.e(Constants.TAG, "unknown uri scheme in (suspected) linked id packet");
+            return null;
+        }
+
+        if (!uri.isOpaque()) {
+            Log.e(Constants.TAG, "non-opaque uri in (suspected) linked id packet");
+            return null;
+        }
+
+        String specific = uri.getSchemeSpecificPart();
+        if (!specific.contains("@")) {
+            Log.e(Constants.TAG, "unknown uri scheme in linked id packet");
+            return null;
+        }
+
+        String[] pieces = specific.split("@", 2);
+        URI subUri = URI.create(pieces[1]);
+
+        Set<String> flags = new HashSet<String>();
+        HashMap<String,String> params = new HashMap<String,String>();
+        {
+            String[] rawParams = pieces[0].split(";");
+            for (String param : rawParams) {
+                String[] p = param.split("=", 2);
+                if ("".equals(p[0])) {
+                    continue;
+                }
+                if (p.length == 1) {
+                    flags.add(param);
+                } else {
+                    params.put(p[0], p[1]);
+                }
+            }
+        }
+
+        return findResourceType(flags, params, subUri);
+
+    }
+
+    protected static LinkedCookieResource findResourceType (Set<String> flags,
+                                                            HashMap<String,String> params,
+                                                            URI  subUri) {
+
+        LinkedCookieResource res;
+
+        res = GenericHttpsResource.create(flags, params, subUri);
+        if (res != null) {
+            return res;
+        }
+        res = DnsResource.create(flags, params, subUri);
+        if (res != null) {
+            return res;
+        }
+
+        return null;
+
+    }
+
+}