Create ssh keygen activity with two fragments: the keygen & a screen to show the generated public key
This commit is contained in:
Matthew Wong
parent
32cf7f7813
commit
6f25a8bb23
6 changed files with 265 additions and 1 deletions
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@ -33,6 +33,13 @@
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android:value="com.zeapo.pwdstore.PasswordStore" />
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</activity>
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<activity android:name=".SshKeyGen"
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android:parentActivityName=".PasswordStore">
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<meta-data android:name="android.support.PARENT_ACTIVITY"
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android:value="com.zeapo.pwdstore.PasswordStore" />
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</activity>
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<activity android:name="net.rdrei.android.dirchooser.DirectoryChooserActivity" />
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</application>
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141
app/src/main/java/com/zeapo/pwdstore/SshKeyGen.java
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141
app/src/main/java/com/zeapo/pwdstore/SshKeyGen.java
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@ -0,0 +1,141 @@
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package com.zeapo.pwdstore;
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import android.app.Fragment;
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import android.content.ClipData;
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import android.content.ClipboardManager;
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import android.content.Context;
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import android.os.Bundle;
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import android.support.v7.app.AppCompatActivity;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.inputmethod.InputMethodManager;
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import android.widget.ArrayAdapter;
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import android.widget.Spinner;
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import android.widget.TextView;
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import android.widget.Toast;
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import com.jcraft.jsch.JSch;
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import com.jcraft.jsch.KeyPair;
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import org.apache.commons.io.FileUtils;
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import java.io.File;
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import java.io.FileOutputStream;
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public class SshKeyGen extends AppCompatActivity {
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// SSH key generation UI
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public static class SshKeyGenFragment extends Fragment {
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public SshKeyGenFragment() {
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}
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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View v = inflater.inflate(R.layout.fragment_ssh_keygen, container, false);
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Spinner spinner = (Spinner) v.findViewById(R.id.length);
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Integer[] lengths = new Integer[]{2048, 4096};
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ArrayAdapter<Integer> adapter = new ArrayAdapter<Integer>(getActivity(),
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android.R.layout.simple_spinner_dropdown_item, lengths);
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spinner.setAdapter(adapter);
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return v;
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}
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}
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// Displays the generated public key .ssh_key.pub
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public static class ShowSshKeyFragment extends Fragment {
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public ShowSshKeyFragment() {
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}
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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View v = inflater.inflate(R.layout.fragment_show_ssh_key, container, false);
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TextView textView = (TextView) v.findViewById(R.id.public_key);
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File file = new File(getActivity().getFilesDir() + "/.ssh_key.pub");
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try {
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textView.setText(FileUtils.readFileToString(file));
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Toast.makeText(getActivity(), "SSH-key generated", Toast.LENGTH_LONG).show();
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} catch (Exception e) {
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System.out.println("Exception caught :(");
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e.printStackTrace();
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}
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v.findViewById(R.id.ok_ssh_key).setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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getActivity().finish();
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}
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});
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return v;
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}
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}
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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getSupportActionBar().setDisplayHomeAsUpEnabled(true);
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setTitle("Generate SSH Key");
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setContentView(R.layout.activity_ssh_keygen);
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if (savedInstanceState == null) {
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getFragmentManager().beginTransaction()
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.replace(android.R.id.content, new SshKeyGenFragment()).commit();
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}
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}
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// Invoked when 'Generate' button of SshKeyGenFragment clicked. Generates a
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// private and public key, then replaces the SshKeyGenFragment with a
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// ShowSshKeyFragment which displays the public key.
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public void generate(View view) {
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InputMethodManager imm = (InputMethodManager) this.getSystemService(Context.INPUT_METHOD_SERVICE);
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imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
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Spinner spinner = (Spinner) findViewById(R.id.length);
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int length = (Integer) spinner.getSelectedItem();
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TextView textView = (TextView) findViewById(R.id.passphrase);
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String passphrase = textView.getText().toString();
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textView = (TextView) findViewById(R.id.comment);
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String comment = textView.getText().toString();
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JSch jsch = new JSch();
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try {
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KeyPair kp = KeyPair.genKeyPair(jsch, KeyPair.RSA, length);
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File file = new File(getFilesDir() + "/.ssh_key");
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FileOutputStream out = new FileOutputStream(file, false);
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kp.writePrivateKey(out, passphrase.getBytes());
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file = new File(getFilesDir() + "/.ssh_key.pub");
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out = new FileOutputStream(file, false);
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kp.writePublicKey(out, comment);
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} catch (Exception e) {
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System.out.println("Exception caught :(");
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e.printStackTrace();
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return;
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}
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getFragmentManager().beginTransaction()
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.replace(android.R.id.content, new ShowSshKeyFragment()).commit();
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}
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// Invoked when 'Copy' button of ShowSshKeyFragment clicked. Copies the
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// displayed public key to the clipboard.
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public void copy (View view) {
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TextView textView = (TextView) findViewById(R.id.public_key);
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ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
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ClipData clip = ClipData.newPlainText("public key", textView.getText().toString());
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clipboard.setPrimaryClip(clip);
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}
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}
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7
app/src/main/res/layout/activity_ssh_keygen.xml
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7
app/src/main/res/layout/activity_ssh_keygen.xml
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@ -0,0 +1,7 @@
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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:orientation="vertical"
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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</LinearLayout>
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50
app/src/main/res/layout/fragment_show_ssh_key.xml
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50
app/src/main/res/layout/fragment_show_ssh_key.xml
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@ -0,0 +1,50 @@
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<?xml version="1.0" encoding="utf-8"?>
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<ScrollView
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xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:orientation="vertical">
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<TextView
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android:id="@+id/public_key"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:layout_margin="16dp"
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android:textIsSelectable="true"/>
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<TextView
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android:id="@+id/public_key_tip"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_marginLeft="16dp"
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android:text="@string/ssh_keygen_tip"
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android:textAppearance="?android:attr/textAppearanceMedium"/>
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<LinearLayout
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_gravity="right"
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android:layout_marginRight="16dp"
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android:layout_marginTop="8dp"
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android:orientation="horizontal">
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<Button
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android:id="@+id/copy_public_key"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@string/ssh_keygen_copy"
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android:onClick="copy" />
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<Button
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android:id="@+id/ok_ssh_key"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@string/dialog_ok"/>
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</LinearLayout>
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</LinearLayout>
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</ScrollView>
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59
app/src/main/res/layout/fragment_ssh_keygen.xml
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59
app/src/main/res/layout/fragment_ssh_keygen.xml
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@ -0,0 +1,59 @@
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<?xml version="1.0" encoding="utf-8"?>
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<ScrollView
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xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:orientation="vertical">
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<TextView
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android:id="@+id/label_length"
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android:layout_width="wrap_content"
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android:layout_height="48dp"
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android:layout_marginLeft="16dp"
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android:gravity="center_vertical"
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android:text="Length"/>
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<Spinner
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android:id="@+id/length"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:layout_marginLeft="16dp"
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android:layout_marginRight="16dp"
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android:spinnerMode="dropdown"/>
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<EditText
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android:id="@+id/passphrase"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:layout_marginLeft="16dp"
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android:layout_marginRight="16dp"
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android:layout_marginTop="8dp"
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android:hint="Passphrase"
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android:inputType="textVisiblePassword"/>
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<EditText
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android:id="@+id/comment"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:layout_marginLeft="16dp"
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android:layout_marginRight="16dp"
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android:layout_marginTop="8dp"
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android:hint="Comment"
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android:inputType="textShortMessage"/>
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<Button
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android:id="@+id/generate_ssh_key"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:layout_marginLeft="16dp"
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android:layout_marginRight="16dp"
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android:layout_marginTop="8dp"
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android:onClick="generate"
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android:text="Generate"/>
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</LinearLayout>
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</ScrollView>
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