moved some Intent extra constants into more appropriate places, some basic preparations to test thread-pausing during decryption/encryption to deal with certain situations, mainly an unknown signature key

src/org/thialfihar/android/apg/Apg.java

@@ -100,8 +100,8 @@ import android.database.sqlite.SQLiteDatabase;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Environment;
+import android.os.Handler;
 import android.view.ViewGroup;
-import android.widget.Toast;
 
 public class Apg {
     private static final String mApgPackageName = "org.thialfihar.android.apg";
@@ -141,16 +141,10 @@ public class Apg {
     public static final String EXTRA_SUBJECT = "subject";
     public static final String EXTRA_ENCRYPTION_KEY_IDS = "encryptionKeyIds";
     public static final String EXTRA_SELECTION = "selection";
-    public static final String EXTRA_MESSAGE = "message";
     public static final String EXTRA_ASCII_ARMOUR = "asciiArmour";
     public static final String EXTRA_BINARY = "binary";
     public static final String EXTRA_KEY_SERVERS = "keyServers";
 
-    public static final String EXTRA_PROGRESS = "progress";
-    public static final String EXTRA_PROGRESS_MAX = "max";
-    public static final String EXTRA_ACCOUNT = "account";
-    public static final String EXTRA_STATUS = "status";
-
     public static final String AUTHORITY = DataProvider.AUTHORITY;
 
     public static final Uri CONTENT_URI_SECRET_KEY_RINGS =
@@ -1725,7 +1719,8 @@ public class Apg {
 
     public static Bundle verifyText(Context context,
                                     InputData data, OutputStream outStream,
-                                    ProgressDialogUpdater progress)
+                                    ProgressDialogUpdater progress,
+                                    PausableThread thread, Handler handler)
             throws IOException, GeneralException, PGPException, SignatureException {
         Bundle returnData = new Bundle();
 

src/org/thialfihar/android/apg/BaseActivity.java

@@ -45,7 +45,7 @@ public class BaseActivity extends Activity
                           AskForSecretKeyPassPhrase.PassPhraseCallbackInterface {
 
     private ProgressDialog mProgressDialog = null;
-    private Thread mRunningThread = null;
+    private PausableThread mRunningThread = null;
     private Thread mDeletingThread = null;
 
     private long mSecretKeyId = 0;
@@ -256,7 +256,7 @@ public class BaseActivity extends Activity
                                    @Override
                                     public void run() {
                                        Bundle data = new Bundle();
-                                       data.putInt(Apg.EXTRA_STATUS, Id.message.delete_done);
+                                       data.putInt(Constants.extras.status, Id.message.delete_done);
                                        try {
                                            Apg.deleteFileSecurely(BaseActivity.this, file, BaseActivity.this);
                                        } catch (FileNotFoundException e) {
@@ -323,9 +323,9 @@ public class BaseActivity extends Activity
     public void setProgress(int progress, int max) {
         Message msg = new Message();
         Bundle data = new Bundle();
-        data.putInt(Apg.EXTRA_STATUS, Id.message.progress_update);
+        data.putInt(Constants.extras.status, Id.message.progress_update);
-        data.putInt(Apg.EXTRA_PROGRESS, progress);
+        data.putInt(Constants.extras.progress, progress);
-        data.putInt(Apg.EXTRA_PROGRESS_MAX, max);
+        data.putInt(Constants.extras.progress_max, max);
         msg.setData(data);
         mHandler.sendMessage(msg);
     }
@@ -333,10 +333,10 @@ public class BaseActivity extends Activity
     public void setProgress(String message, int progress, int max) {
         Message msg = new Message();
         Bundle data = new Bundle();
-        data.putInt(Apg.EXTRA_STATUS, Id.message.progress_update);
+        data.putInt(Constants.extras.status, Id.message.progress_update);
-        data.putString(Apg.EXTRA_MESSAGE, message);
+        data.putString(Constants.extras.message, message);
-        data.putInt(Apg.EXTRA_PROGRESS, progress);
+        data.putInt(Constants.extras.progress, progress);
-        data.putInt(Apg.EXTRA_PROGRESS_MAX, max);
+        data.putInt(Constants.extras.progress_max, max);
         msg.setData(data);
         mHandler.sendMessage(msg);
     }
@@ -347,16 +347,16 @@ public class BaseActivity extends Activity
             return;
         }
 
-        int type = data.getInt(Apg.EXTRA_STATUS);
+        int type = data.getInt(Constants.extras.status);
         switch (type) {
             case Id.message.progress_update: {
-                String message = data.getString(Apg.EXTRA_MESSAGE);
+                String message = data.getString(Constants.extras.message);
                 if (mProgressDialog != null) {
                     if (message != null) {
                         mProgressDialog.setMessage(message);
                     }
-                    mProgressDialog.setMax(data.getInt(Apg.EXTRA_PROGRESS_MAX));
+                    mProgressDialog.setMax(data.getInt(Constants.extras.progress_max));
-                    mProgressDialog.setProgress(data.getInt(Apg.EXTRA_PROGRESS));
+                    mProgressDialog.setProgress(data.getInt(Constants.extras.progress));
                 }
                 break;
             }
@@ -375,6 +375,10 @@ public class BaseActivity extends Activity
                 doneCallback(msg);
                 break;
             }
+
+            default: {
+                break;
+            }
         }
     }
 
@@ -406,8 +410,16 @@ public class BaseActivity extends Activity
         mHandler.sendMessage(msg);
     }
 
+    public PausableThread getRunningThread() {
+        return mRunningThread;
+    }
+
+    public Handler getHandler() {
+        return mHandler;
+    }
+
     public void startThread() {
-        mRunningThread = new Thread(this);
+        mRunningThread = new PausableThread(this);
         mRunningThread.start();
     }
 

src/org/thialfihar/android/apg/Constants.java

@@ -40,4 +40,11 @@ public final class Constants {
     public static final class defaults {
         public static final String key_servers = "pool.sks-keyservers.net, subkeys.pgp.net, pgp.mit.edu";
     }
+
+    public static final class extras {
+        public static final String progress = "progress";
+        public static final String progress_max = "max";
+        public static final String status = "status";
+        public static final String message = "message";
+    }
 }

src/org/thialfihar/android/apg/DecryptActivity.java

@@ -509,7 +509,7 @@ public class DecryptActivity extends BaseActivity {
             OutputStream out = mDataDestination.getOutputStream(this);
 
             if (mSignedOnly) {
-                data = Apg.verifyText(this, in, out, this);
+                data = Apg.verifyText(this, in, out, this, getRunningThread(), getHandler());
             } else {
                 data = Apg.decrypt(this, in, out, Apg.getCachedPassPhrase(getSecretKeyId()),
                                    this, mAssumeSymmetricEncryption);
@@ -539,7 +539,7 @@ public class DecryptActivity extends BaseActivity {
             error = "" + e;
         }
 
-        data.putInt(Apg.EXTRA_STATUS, Id.message.done);
+        data.putInt(Constants.extras.status, Id.message.done);
 
         if (error != null) {
             data.putString(Apg.EXTRA_ERROR, error);
@@ -549,6 +549,19 @@ public class DecryptActivity extends BaseActivity {
         sendMessage(msg);
     }
 
+    public void handlerCallback(Message msg) {
+        Bundle data = msg.getData();
+        if (data == null) {
+            return;
+        }
+
+        if (data.getInt(Constants.extras.status) == Id.message.unknown_signature_key) {
+
+        }
+
+        super.handlerCallback(msg);
+    }
+
     @Override
     public void doneCallback(Message msg) {
         super.doneCallback(msg);

src/org/thialfihar/android/apg/EditKeyActivity.java

@@ -258,7 +258,7 @@ public class EditKeyActivity extends BaseActivity implements OnClickListener {
             error = "" + e;
         }
 
-        data.putInt(Apg.EXTRA_STATUS, Id.message.done);
+        data.putInt(Constants.extras.status, Id.message.done);
 
         if (error != null) {
             data.putString(Apg.EXTRA_ERROR, error);

src/org/thialfihar/android/apg/EncryptActivity.java

@@ -701,7 +701,7 @@ public class EncryptActivity extends BaseActivity {
             error = "" + e;
         }
 
-        data.putInt(Apg.EXTRA_STATUS, Id.message.done);
+        data.putInt(Constants.extras.status, Id.message.done);
 
         if (error != null) {
             data.putString(Apg.EXTRA_ERROR, error);

src/org/thialfihar/android/apg/HkpKeyServer.java

@@ -132,7 +132,6 @@ public class HkpKeyServer extends KeyServer {
             if (e.getCode() == 404) {
                 return results;
             } else {
-                System.out.println(e.getData());
                 if (e.getData().toLowerCase().contains("no keys found")) {
                     return results;
                 } else if (e.getData().toLowerCase().contains("too many")) {

src/org/thialfihar/android/apg/Id.java

@@ -51,6 +51,7 @@ public final class Id {
         public static final int edit_key = 0x21070008;
         public static final int delete_done = 0x21070009;
         public static final int query_done = 0x21070010;
+        public static final int unknown_signature_key = 0x21070011;
     }
 
     public static final class request {

src/org/thialfihar/android/apg/KeyListActivity.java

@@ -358,9 +358,9 @@ public class KeyListActivity extends BaseActivity {
         mImportData = null;
 
         if (mTask == Id.task.import_keys) {
-            data.putInt(Apg.EXTRA_STATUS, Id.message.import_done);
+            data.putInt(Constants.extras.status, Id.message.import_done);
         } else {
-            data.putInt(Apg.EXTRA_STATUS, Id.message.export_done);
+            data.putInt(Constants.extras.status, Id.message.export_done);
         }
 
         if (error != null) {
@@ -387,7 +387,7 @@ public class KeyListActivity extends BaseActivity {
 
         Bundle data = msg.getData();
         if (data != null) {
-            int type = data.getInt(Apg.EXTRA_STATUS);
+            int type = data.getInt(Constants.extras.status);
             switch (type) {
                 case Id.message.import_done: {
                     removeDialog(Id.dialog.importing);

src/org/thialfihar/android/apg/KeyServerQueryActivity.java

@@ -140,7 +140,7 @@ public class KeyServerQueryActivity extends BaseActivity {
             error = "Too many responses.";
         }
 
-        data.putInt(Apg.EXTRA_STATUS, Id.message.done);
+        data.putInt(Constants.extras.status, Id.message.done);
 
         if (error != null) {
             data.putString(Apg.EXTRA_ERROR, error);

src/org/thialfihar/android/apg/MailListActivity.java

@@ -39,6 +39,8 @@ import android.widget.TextView;
 public class MailListActivity extends ListActivity {
     LayoutInflater mInflater = null;
 
+    public static final String EXTRA_ACCOUNT = "account";
+
     private static class Conversation {
         public long id;
         public String subject;
@@ -90,7 +92,7 @@ public class MailListActivity extends ListActivity {
         mConversations = new Vector<Conversation>();
         mMessages = new Vector<Message>();
 
-        String account = getIntent().getExtras().getString(Apg.EXTRA_ACCOUNT);
+        String account = getIntent().getExtras().getString(EXTRA_ACCOUNT);
         // TODO: what if account is null?
         Uri uri = Uri.parse("content://gmail-ls/conversations/" + account);
         Cursor cursor =

src/org/thialfihar/android/apg/MainActivity.java

@@ -117,7 +117,7 @@ public class MainActivity extends BaseActivity {
             public void onItemClick(AdapterView<?> arg0, View view, int index, long id) {
                 String accountName = (String) mAccounts.getItemAtPosition(index);
                 startActivity(new Intent(MainActivity.this, MailListActivity.class)
-                                        .putExtra(Apg.EXTRA_ACCOUNT, accountName));
+                                        .putExtra(MailListActivity.EXTRA_ACCOUNT, accountName));
             }
         });
         registerForContextMenu(mAccounts);

src/org/thialfihar/android/apg/PausableThread.java

@@ -0,0 +1,35 @@
+package org.thialfihar.android.apg;
+
+public class PausableThread extends Thread {
+    private boolean mPaused = false;
+
+    public PausableThread(Runnable runnable) {
+        super(runnable);
+    }
+
+    public void pause() {
+        synchronized (this) {
+            mPaused = true;
+            while (mPaused) {
+                try {
+                    wait();
+                } catch (InterruptedException e) {
+                    // ignore
+                }
+            }
+        }
+    }
+
+    public void unpause() {
+        synchronized (this) {
+           mPaused = false;
+           notify();
+        }
+    }
+
+    public boolean isPaused() {
+        synchronized (this) {
+            return mPaused;
+        }
+    }
+}