From 6f25a8bb232833e78c23ca67f157f75d109d421b Mon Sep 17 00:00:00 2001 From: Matthew Wong Date: Tue, 14 Jul 2015 22:41:04 -0400 Subject: Create ssh keygen activity with two fragments: the keygen & a screen to show the generated public key --- .../main/java/com/zeapo/pwdstore/SshKeyGen.java | 141 +++++++++++++++++++++ .../com/zeapo/pwdstore/pwgenDialogFragment.java | 2 +- 2 files changed, 142 insertions(+), 1 deletion(-) create mode 100644 app/src/main/java/com/zeapo/pwdstore/SshKeyGen.java (limited to 'app/src/main/java') diff --git a/app/src/main/java/com/zeapo/pwdstore/SshKeyGen.java b/app/src/main/java/com/zeapo/pwdstore/SshKeyGen.java new file mode 100644 index 00000000..a1c76ffb --- /dev/null +++ b/app/src/main/java/com/zeapo/pwdstore/SshKeyGen.java @@ -0,0 +1,141 @@ +package com.zeapo.pwdstore; + +import android.app.Fragment; +import android.content.ClipData; +import android.content.ClipboardManager; +import android.content.Context; +import android.os.Bundle; +import android.support.v7.app.AppCompatActivity; +import android.view.LayoutInflater; +import android.view.View; +import android.view.ViewGroup; +import android.view.inputmethod.InputMethodManager; +import android.widget.ArrayAdapter; +import android.widget.Spinner; +import android.widget.TextView; +import android.widget.Toast; + +import com.jcraft.jsch.JSch; +import com.jcraft.jsch.KeyPair; + +import org.apache.commons.io.FileUtils; + +import java.io.File; +import java.io.FileOutputStream; + +public class SshKeyGen extends AppCompatActivity { + + // SSH key generation UI + public static class SshKeyGenFragment extends Fragment { + public SshKeyGenFragment() { + } + + @Override + public View onCreateView(LayoutInflater inflater, ViewGroup container, + Bundle savedInstanceState) { + View v = inflater.inflate(R.layout.fragment_ssh_keygen, container, false); + + Spinner spinner = (Spinner) v.findViewById(R.id.length); + Integer[] lengths = new Integer[]{2048, 4096}; + ArrayAdapter adapter = new ArrayAdapter(getActivity(), + android.R.layout.simple_spinner_dropdown_item, lengths); + spinner.setAdapter(adapter); + + return v; + } + } + + // Displays the generated public key .ssh_key.pub + public static class ShowSshKeyFragment extends Fragment { + public ShowSshKeyFragment() { + } + + @Override + public View onCreateView(LayoutInflater inflater, ViewGroup container, + Bundle savedInstanceState) { + View v = inflater.inflate(R.layout.fragment_show_ssh_key, container, false); + + TextView textView = (TextView) v.findViewById(R.id.public_key); + File file = new File(getActivity().getFilesDir() + "/.ssh_key.pub"); + try { + textView.setText(FileUtils.readFileToString(file)); + Toast.makeText(getActivity(), "SSH-key generated", Toast.LENGTH_LONG).show(); + } catch (Exception e) { + System.out.println("Exception caught :("); + e.printStackTrace(); + } + + v.findViewById(R.id.ok_ssh_key).setOnClickListener(new View.OnClickListener() { + @Override + public void onClick(View v) { + getActivity().finish(); + } + }); + + return v; + } + } + + + @Override + public void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + + getSupportActionBar().setDisplayHomeAsUpEnabled(true); + + setTitle("Generate SSH Key"); + + setContentView(R.layout.activity_ssh_keygen); + + if (savedInstanceState == null) { + getFragmentManager().beginTransaction() + .replace(android.R.id.content, new SshKeyGenFragment()).commit(); + } + } + + // Invoked when 'Generate' button of SshKeyGenFragment clicked. Generates a + // private and public key, then replaces the SshKeyGenFragment with a + // ShowSshKeyFragment which displays the public key. + public void generate(View view) { + InputMethodManager imm = (InputMethodManager) this.getSystemService(Context.INPUT_METHOD_SERVICE); + imm.hideSoftInputFromWindow(view.getWindowToken(), 0); + + Spinner spinner = (Spinner) findViewById(R.id.length); + int length = (Integer) spinner.getSelectedItem(); + + TextView textView = (TextView) findViewById(R.id.passphrase); + String passphrase = textView.getText().toString(); + + textView = (TextView) findViewById(R.id.comment); + String comment = textView.getText().toString(); + + JSch jsch = new JSch(); + try { + KeyPair kp = KeyPair.genKeyPair(jsch, KeyPair.RSA, length); + + File file = new File(getFilesDir() + "/.ssh_key"); + FileOutputStream out = new FileOutputStream(file, false); + kp.writePrivateKey(out, passphrase.getBytes()); + + file = new File(getFilesDir() + "/.ssh_key.pub"); + out = new FileOutputStream(file, false); + kp.writePublicKey(out, comment); + } catch (Exception e) { + System.out.println("Exception caught :("); + e.printStackTrace(); + return; + } + getFragmentManager().beginTransaction() + .replace(android.R.id.content, new ShowSshKeyFragment()).commit(); + } + + // Invoked when 'Copy' button of ShowSshKeyFragment clicked. Copies the + // displayed public key to the clipboard. + public void copy (View view) { + TextView textView = (TextView) findViewById(R.id.public_key); + ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE); + ClipData clip = ClipData.newPlainText("public key", textView.getText().toString()); + clipboard.setPrimaryClip(clip); + } + +} diff --git a/app/src/main/java/com/zeapo/pwdstore/pwgenDialogFragment.java b/app/src/main/java/com/zeapo/pwdstore/pwgenDialogFragment.java index af905b5d..0e2b96ef 100644 --- a/app/src/main/java/com/zeapo/pwdstore/pwgenDialogFragment.java +++ b/app/src/main/java/com/zeapo/pwdstore/pwgenDialogFragment.java @@ -116,7 +116,7 @@ public class pwgenDialogFragment extends DialogFragment { try { int length = Integer.valueOf(textView.getText().toString()); return pwgen.setPrefs(getActivity().getApplicationContext(), preferences, length); - } catch(NumberFormatException e) { + } catch (NumberFormatException e) { return pwgen.setPrefs(getActivity().getApplicationContext(), preferences); } } -- cgit v1.2.3