apply fixPgpMessage to plaintext/armored decrypt input

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

@@ -21,6 +21,7 @@ package org.sufficientlysecure.keychain.pgp;
 import android.content.Context;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager.NameNotFoundException;
+import android.support.annotation.NonNull;
 import android.text.TextUtils;
 
 import org.sufficientlysecure.keychain.Constants;
@@ -116,32 +117,27 @@ public class PgpHelper {
         }
     }
 
-    public static String getPgpContent(CharSequence input) {
+    public static String getPgpContent(@NonNull CharSequence input) {
-        // only decrypt if clipboard content is available and a pgp message or cleartext signature
+        Log.dEscaped(Constants.TAG, "input: " + input);
-        if (!TextUtils.isEmpty(input)) {
-            Log.dEscaped(Constants.TAG, "input: " + input);
 
-            Matcher matcher = PgpHelper.PGP_MESSAGE.matcher(input);
+        Matcher matcher = PgpHelper.PGP_MESSAGE.matcher(input);
+        if (matcher.matches()) {
+            String text = matcher.group(1);
+            text = fixPgpMessage(text);
+
+            Log.dEscaped(Constants.TAG, "input fixed: " + text);
+            return text;
+        } else {
+            matcher = PgpHelper.PGP_CLEARTEXT_SIGNATURE.matcher(input);
             if (matcher.matches()) {
                 String text = matcher.group(1);
-                text = fixPgpMessage(text);
+                text = fixPgpCleartextSignature(text);
 
                 Log.dEscaped(Constants.TAG, "input fixed: " + text);
                 return text;
             } else {
-                matcher = PgpHelper.PGP_CLEARTEXT_SIGNATURE.matcher(input);
+                return null;
-                if (matcher.matches()) {
-                    String text = matcher.group(1);
-                    text = fixPgpCleartextSignature(text);
-
-                    Log.dEscaped(Constants.TAG, "input fixed: " + text);
-                    return text;
-                } else {
-                    return null;
-                }
             }
-        } else {
-            return null;
         }
     }
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptActivity.java

@@ -29,13 +29,14 @@ import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
+import android.support.annotation.Nullable;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
-import android.view.View;
 import android.widget.Toast;
 
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.intents.OpenKeychainIntents;
+import org.sufficientlysecure.keychain.pgp.PgpHelper;
 import org.sufficientlysecure.keychain.provider.TemporaryStorageProvider;
 import org.sufficientlysecure.keychain.ui.base.BaseActivity;
 
@@ -93,7 +94,9 @@ public class DecryptActivity extends BaseActivity {
                     } else if (intent.hasExtra(Intent.EXTRA_TEXT)) {
                         String text = intent.getStringExtra(Intent.EXTRA_TEXT);
                         Uri uri = readToTempFile(text);
-                        uris.add(uri);
+                        if (uri != null) {
+                            uris.add(uri);
+                        }
                     }
 
                     break;
@@ -105,7 +108,9 @@ public class DecryptActivity extends BaseActivity {
                     } else if (intent.hasExtra(Intent.EXTRA_TEXT)) {
                         for (String text : intent.getStringArrayListExtra(Intent.EXTRA_TEXT)) {
                             Uri uri = readToTempFile(text);
-                            uris.add(uri);
+                            if (uri != null) {
+                                uris.add(uri);
+                            }
                         }
                     }
 
@@ -139,7 +144,9 @@ public class DecryptActivity extends BaseActivity {
                         String text = clip.getItemAt(0).coerceToText(this).toString();
                         uri = readToTempFile(text);
                     }
-                    uris.add(uri);
+                    if (uri != null) {
+                        uris.add(uri);
+                    }
 
                     break;
                 }
@@ -170,9 +177,17 @@ public class DecryptActivity extends BaseActivity {
 
     }
 
-    public Uri readToTempFile(String text) throws IOException {
+    @Nullable public Uri readToTempFile(String text) throws IOException {
         Uri tempFile = TemporaryStorageProvider.createFile(this);
         OutputStream outStream = getContentResolver().openOutputStream(tempFile);
+
+        // clean up ascii armored message, fixing newlines and stuff
+        String cleanedText = PgpHelper.getPgpContent(text);
+        if (cleanedText == null) {
+            return null;
+        }
+
+        // if cleanup didn't work, just try the raw data
         outStream.write(text.getBytes());
         outStream.close();
         return tempFile;