Add OpenPgpSignatureResultBuilder

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/OpenPgpSignatureResultBuilder.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.pgp;
+
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.util.Log;
+
+/**
+ * This class can be used to build OpenPgpSignatureResult objects based on several checks.
+ * It serves as a constraint which information are returned inside an OpenPgpSignatureResult object.
+ */
+public class OpenPgpSignatureResultBuilder {
+    // OpenPgpSignatureResult
+    private int mStatus = OpenPgpSignatureResult.SIGNATURE_ERROR;
+    private boolean mSignatureOnly = false;
+    private String mUserId;
+    private long mKeyId;
+
+    // builder
+    private boolean mSignatureAvailable = false;
+    private boolean mKnownKey = false;
+    private boolean mValidSignature = false;
+    private boolean mValidKeyBinding = false;
+    private boolean mIsSignatureKeyCertified = false;
+
+    public void status(int status) {
+        this.mStatus = status;
+    }
+
+    public void signatureOnly(boolean signatureOnly) {
+        this.mSignatureOnly = signatureOnly;
+    }
+
+    public void userId(String userId) {
+        this.mUserId = userId;
+    }
+
+    public void keyId(long keyId) {
+        this.mKeyId = keyId;
+    }
+
+    public void knownKey(boolean knownKey) {
+        this.mKnownKey = knownKey;
+    }
+
+    public void validSignature(boolean validSignature) {
+        this.mValidSignature = validSignature;
+    }
+
+    public void validKeyBinding(boolean validKeyBinding) {
+        this.mValidKeyBinding = validKeyBinding;
+    }
+
+    public void signatureKeyCertified(boolean isSignatureKeyCertified) {
+        this.mIsSignatureKeyCertified = isSignatureKeyCertified;
+    }
+
+    public void signatureAvailable(boolean signatureAvailable) {
+        this.mSignatureAvailable = signatureAvailable;
+    }
+
+    public OpenPgpSignatureResult build() {
+        if (mSignatureAvailable) {
+            OpenPgpSignatureResult result = new OpenPgpSignatureResult();
+            result.setSignatureOnly(mSignatureOnly);
+
+            if (mValidKeyBinding && mValidSignature) {
+                // valid sig!
+                if (mKnownKey) {
+                    result.setKeyId(mKeyId);
+                    result.setUserId(mUserId);
+
+                    if (mIsSignatureKeyCertified) {
+                        Log.d(Constants.TAG, "SIGNATURE_SUCCESS_CERTIFIED");
+                        result.setStatus(OpenPgpSignatureResult.SIGNATURE_SUCCESS_CERTIFIED);
+                    } else {
+                        Log.d(Constants.TAG, "SIGNATURE_SUCCESS_UNCERTIFIED");
+                        result.setStatus(OpenPgpSignatureResult.SIGNATURE_SUCCESS_UNCERTIFIED);
+                    }
+                } else {
+                    result.setKeyId(mKeyId);
+
+                    Log.d(Constants.TAG, "SIGNATURE_UNKNOWN_PUB_KEY");
+                    result.setStatus(OpenPgpSignatureResult.SIGNATURE_UNKNOWN_PUB_KEY);
+                }
+            } else {
+                Log.d(Constants.TAG, "Error!\nvalidKeyBinding: " + mValidKeyBinding
+                        + "\nvalidSignature: " + mValidSignature);
+                result.setStatus(OpenPgpSignatureResult.SIGNATURE_ERROR);
+            }
+
+            return result;
+        } else {
+            Log.d(Constants.TAG, "no signature found!");
+
+            return null;
+        }
+    }
+
+
+}