diff options
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedIdentity.java')
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedIdentity.java | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedIdentity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedIdentity.java new file mode 100644 index 000000000..ff5995329 --- /dev/null +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedIdentity.java @@ -0,0 +1,94 @@ +package org.sufficientlysecure.keychain.pgp.linked; + +import org.spongycastle.bcpg.UserAttributeSubpacket; +import org.spongycastle.util.Strings; +import org.sufficientlysecure.keychain.Constants; +import org.sufficientlysecure.keychain.R; +import org.sufficientlysecure.keychain.pgp.WrappedUserAttribute; +import org.sufficientlysecure.keychain.util.Log; + +import java.io.IOException; +import java.net.URI; +import java.nio.ByteBuffer; +import java.util.Arrays; + +import android.content.Context; +import android.content.Intent; +import android.support.annotation.DrawableRes; + + +public class LinkedIdentity extends RawLinkedIdentity { + + public final LinkedResource mResource; + + protected LinkedIdentity(int nonce, URI uri, LinkedResource resource) { + super(nonce, uri); + if (resource == null) { + throw new AssertionError("resource must not be null in a LinkedIdentity!"); + } + mResource = resource; + } + + public static RawLinkedIdentity fromAttributeData(byte[] data) throws IOException { + WrappedUserAttribute att = WrappedUserAttribute.fromData(data); + + byte[][] subpackets = att.getSubpackets(); + if (subpackets.length >= 1) { + return fromSubpacketData(subpackets[0]); + } + + throw new IOException("no subpacket data"); + } + + /** This method parses a linked id from a UserAttributeSubpacket, or returns null if the + * subpacket can not be parsed as a valid linked id. + */ + static RawLinkedIdentity fromAttributeSubpacket(UserAttributeSubpacket subpacket) { + if (subpacket.getType() != 100) { + return null; + } + + byte[] data = subpacket.getData(); + + return fromSubpacketData(data); + + } + + static RawLinkedIdentity fromSubpacketData(byte[] data) { + + try { + int nonce = ByteBuffer.wrap(data).getInt(); + String uriStr = Strings.fromUTF8ByteArray(Arrays.copyOfRange(data, 4, data.length)); + URI uri = URI.create(uriStr); + + LinkedResource res = LinkedResource.fromUri(uri); + if (res == null) { + return new RawLinkedIdentity(nonce, uri); + } + + return new LinkedIdentity(nonce, uri, res); + + } catch (IllegalArgumentException e) { + Log.e(Constants.TAG, "error parsing uri in (suspected) linked id packet"); + return null; + } + } + + public static RawLinkedIdentity fromResource (LinkedCookieResource res, int nonce) { + return new RawLinkedIdentity(nonce, res.toUri()); + } + + + public @DrawableRes int getDisplayIcon() { + return mResource.getDisplayIcon(); + } + + public String getDisplayTitle(Context context) { + return mResource.getDisplayTitle(context); + } + + public String getDisplayComment(Context context) { + return mResource.getDisplayComment(context); + } + +} |