Merge pull request #57 from zeapo/feature/refactor-git

Refactoring of the git process

1 files changed, 170 insertions, 0 deletions

diff --git a/app/src/main/java/com/zeapo/pwdstore/git/GitOperation.java b/app/src/main/java/com/zeapo/pwdstore/git/GitOperation.java
new file mode 100644
index 00000000..60112c90
--- /dev/null
+++ b/app/src/main/java/com/zeapo/pwdstore/git/GitOperation.java
@@ -0,0 +1,170 @@
+package com.zeapo.pwdstore.git;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.support.annotation.Nullable;
+import android.text.InputType;
+import android.util.Log;
+import android.widget.EditText;
+import android.widget.LinearLayout;
+
+import com.zeapo.pwdstore.R;
+import com.zeapo.pwdstore.UserPreference;
+import com.zeapo.pwdstore.git.config.GitConfigSessionFactory;
+import com.zeapo.pwdstore.git.config.SshConfigSessionFactory;
+import com.zeapo.pwdstore.utils.PasswordRepository;
+
+import org.eclipse.jgit.api.CloneCommand;
+import org.eclipse.jgit.api.GitCommand;
+import org.eclipse.jgit.lib.Repository;
+import org.eclipse.jgit.transport.JschConfigSessionFactory;
+import org.eclipse.jgit.transport.SshSessionFactory;
+import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider;
+
+import java.io.File;
+
+public abstract class GitOperation {
+    private static final String TAG = "GitOpt";
+    public static final int GET_SSH_KEY_FROM_CLONE = 201;
+
+    protected final Repository repository;
+    protected final Activity callingActivity;
+    protected UsernamePasswordCredentialsProvider provider;
+    protected GitCommand command;
+
+    /**
+     * Creates a new git operation
+     *
+     * @param fileDir         the git working tree directory
+     * @param callingActivity the calling activity
+     */
+    public GitOperation(File fileDir, Activity callingActivity) {
+        this.repository = PasswordRepository.getRepository(fileDir);
+        this.callingActivity = callingActivity;
+    }
+
+    /**
+     * Sets the authentication using user/pwd scheme
+     *
+     * @param username the username
+     * @param password the password
+     * @return the current object
+     */
+    public GitOperation setAuthentication(String username, String password) {
+        SshSessionFactory.setInstance(new GitConfigSessionFactory());
+        this.provider = new UsernamePasswordCredentialsProvider(username, password);
+        return this;
+    }
+
+    /**
+     * Sets the authentication using ssh-key scheme
+     *
+     * @param sshKey     the ssh-key file
+     * @param username   the username
+     * @param passphrase the passphrase
+     * @return the current object
+     */
+    public GitOperation setAuthentication(File sshKey, String username, String passphrase) {
+        JschConfigSessionFactory sessionFactory = new SshConfigSessionFactory(sshKey.getAbsolutePath(), username, passphrase);
+        SshSessionFactory.setInstance(sessionFactory);
+        this.provider = null;
+        return this;
+    }
+
+    /**
+     * Executes the GitCommand in an async task
+     *
+     * @throws Exception
+     */
+    public abstract void execute() throws Exception;
+
+    /**
+     * Executes the GitCommand in an async task after creating the authentication
+     *
+     * @param connectionMode the server-connection mode
+     * @param username       the username
+     * @param sshKey         the ssh-key file
+     * @throws Exception
+     */
+    public void executeAfterAuthentication(String connectionMode, final String username, @Nullable final File sshKey) throws Exception {
+        if (connectionMode.equalsIgnoreCase("ssh-key")) {
+            if (sshKey == null || !sshKey.exists()) {
+                new AlertDialog.Builder(callingActivity)
+                        .setMessage(callingActivity.getResources().getString(R.string.ssh_preferences_dialog_text))
+                        .setTitle(callingActivity.getResources().getString(R.string.ssh_preferences_dialog_title))
+                        .setPositiveButton(callingActivity.getResources().getString(R.string.dialog_ok), new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialog, int id) {
+                                try {
+                                    // Ask the UserPreference to provide us with the ssh-key
+                                    // onResult has to be handled by the callingActivity
+                                    Intent intent = new Intent(callingActivity.getApplicationContext(), UserPreference.class);
+                                    intent.putExtra("operation", "get_ssh_key");
+                                    callingActivity.startActivityForResult(intent, GET_SSH_KEY_FROM_CLONE);
+                                } catch (Exception e) {
+                                    System.out.println("Exception caught :(");
+                                    e.printStackTrace();
+                                }
+                            }
+                        }).setNegativeButton(callingActivity.getResources().getString(R.string.dialog_cancel), new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int id) {
+                        // Do nothing...
+                    }
+                }).show();
+            } else {
+                final EditText passphrase = new EditText(callingActivity);
+                passphrase.setHint("Passphrase");
+                passphrase.setWidth(LinearLayout.LayoutParams.MATCH_PARENT);
+                passphrase.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
+
+                new AlertDialog.Builder(callingActivity)
+                        .setTitle(callingActivity.getResources().getString(R.string.passphrase_dialog_title))
+                        .setMessage(callingActivity.getResources().getString(R.string.passphrase_dialog_text))
+                        .setView(passphrase)
+                        .setPositiveButton(callingActivity.getResources().getString(R.string.dialog_ok), new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int whichButton) {
+                                try {
+                                    // Authenticate using the ssh-key and then execute the command
+                                    setAuthentication(sshKey, username, passphrase.getText().toString()).execute();
+                                } catch (Exception e) {
+                                    e.printStackTrace();
+                                }
+
+                            }
+                        }).setNegativeButton(callingActivity.getResources().getString(R.string.dialog_cancel), new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int whichButton) {
+                        // Do nothing.
+                    }
+                }).show();
+            }
+        } else {
+            final EditText password = new EditText(callingActivity);
+            password.setHint("Password");
+            password.setWidth(LinearLayout.LayoutParams.MATCH_PARENT);
+            password.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
+
+            new AlertDialog.Builder(callingActivity)
+                    .setTitle(callingActivity.getResources().getString(R.string.passphrase_dialog_title))
+                    .setMessage(callingActivity.getResources().getString(R.string.password_dialog_text))
+                    .setView(password)
+                    .setPositiveButton(callingActivity.getResources().getString(R.string.dialog_ok), new DialogInterface.OnClickListener() {
+                        public void onClick(DialogInterface dialog, int whichButton) {
+                            // authenticate using the user/pwd and then execute the command
+                            try {
+                                setAuthentication(username, password.getText().toString()).execute();
+                            } catch (Exception e) {
+                                e.printStackTrace();
+                            }
+
+                        }
+                    }).setNegativeButton(callingActivity.getResources().getString(R.string.dialog_cancel), new DialogInterface.OnClickListener() {
+                public void onClick(DialogInterface dialog, int whichButton) {
+                    // Do nothing.
+                }
+            }).show();
+        }
+    }
+}