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/*
* Copyright © 2014-2019 The Android Password Store Authors. All Rights Reserved.
* SPDX-License-Identifier: GPL-3.0-only
*/
package com.zeapo.pwdstore.git
import android.annotation.SuppressLint
import android.app.Activity
import android.content.Intent
import android.text.InputType
import android.view.LayoutInflater
import android.view.View
import android.widget.CheckBox
import android.widget.EditText
import android.widget.LinearLayout
import androidx.preference.PreferenceManager
import com.google.android.material.dialog.MaterialAlertDialogBuilder
import com.jcraft.jsch.JSch
import com.jcraft.jsch.JSchException
import com.jcraft.jsch.KeyPair
import com.zeapo.pwdstore.R
import com.zeapo.pwdstore.UserPreference
import com.zeapo.pwdstore.git.config.GitConfigSessionFactory
import com.zeapo.pwdstore.git.config.SshApiSessionFactory
import com.zeapo.pwdstore.git.config.SshConfigSessionFactory
import com.zeapo.pwdstore.utils.PasswordRepository
import org.eclipse.jgit.api.GitCommand
import org.eclipse.jgit.lib.Repository
import org.eclipse.jgit.transport.SshSessionFactory
import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider
import java.io.File
/**
* Creates a new git operation
*
* @param fileDir the git working tree directory
* @param callingActivity the calling activity
*/
abstract class GitOperation(fileDir: File, internal val callingActivity: Activity) {
protected val repository: Repository? = PasswordRepository.getRepository(fileDir)
internal var provider: UsernamePasswordCredentialsProvider? = null
internal var command: GitCommand<*>? = null
/**
* Sets the authentication using user/pwd scheme
*
* @param username the username
* @param password the password
* @return the current object
*/
internal open fun setAuthentication(username: String, password: String): GitOperation {
SshSessionFactory.setInstance(GitConfigSessionFactory())
this.provider = 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
*/
internal open fun setAuthentication(sshKey: File, username: String, passphrase: String): GitOperation {
val sessionFactory = SshConfigSessionFactory(sshKey.absolutePath, username, passphrase)
SshSessionFactory.setInstance(sessionFactory)
this.provider = null
return this
}
/**
* Sets the authentication using OpenKeystore scheme
*
* @param identity The identiy to use
* @return the current object
*/
private fun setAuthentication(username: String, identity: SshApiSessionFactory.ApiIdentity?): GitOperation {
SshSessionFactory.setInstance(SshApiSessionFactory(username, identity))
this.provider = null
return this
}
/**
* Executes the GitCommand in an async task
*/
abstract fun execute()
/**
* 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 to use in ssh-key connection mode
* @param identity the api identity to use for auth in OpenKeychain connection mode
*/
fun executeAfterAuthentication(
connectionMode: String,
username: String,
sshKey: File?,
identity: SshApiSessionFactory.ApiIdentity?
) {
executeAfterAuthentication(connectionMode, username, sshKey, identity, false)
}
/**
* 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 to use in ssh-key connection mode
* @param identity the api identity to use for auth in OpenKeychain connection mode
* @param showError show the passphrase edit text in red
*/
private fun executeAfterAuthentication(
connectionMode: String,
username: String,
sshKey: File?,
identity: SshApiSessionFactory.ApiIdentity?,
showError: Boolean
) {
if (connectionMode.equals("ssh-key", ignoreCase = true)) {
if (sshKey == null || !sshKey.exists()) {
MaterialAlertDialogBuilder(callingActivity)
.setMessage(callingActivity.resources.getString(R.string.ssh_preferences_dialog_text))
.setTitle(callingActivity.resources.getString(R.string.ssh_preferences_dialog_title))
.setPositiveButton(callingActivity.resources.getString(R.string.ssh_preferences_dialog_import)) { _, _ ->
try {
// Ask the UserPreference to provide us with the ssh-key
// onResult has to be handled by the callingActivity
val intent = Intent(callingActivity.applicationContext, UserPreference::class.java)
intent.putExtra("operation", "get_ssh_key")
callingActivity.startActivityForResult(intent, GET_SSH_KEY_FROM_CLONE)
} catch (e: Exception) {
println("Exception caught :(")
e.printStackTrace()
}
}
.setNegativeButton(callingActivity.resources.getString(R.string.ssh_preferences_dialog_generate)) { _, _ ->
try {
// Duplicated code
val intent = Intent(callingActivity.applicationContext, UserPreference::class.java)
intent.putExtra("operation", "make_ssh_key")
callingActivity.startActivityForResult(intent, GET_SSH_KEY_FROM_CLONE)
} catch (e: Exception) {
println("Exception caught :(")
e.printStackTrace()
}
}
.setNeutralButton(callingActivity.resources.getString(R.string.dialog_cancel)) { _, _ ->
// Finish the blank GitActivity so user doesn't have to press back
callingActivity.finish()
}.show()
} else {
val layoutInflater = LayoutInflater.from(callingActivity.applicationContext)
@SuppressLint("InflateParams") val dialogView = layoutInflater.inflate(R.layout.git_passphrase_layout, null)
val passphrase = dialogView.findViewById<EditText>(R.id.sshkey_passphrase)
val settings = PreferenceManager.getDefaultSharedPreferences(callingActivity.applicationContext)
val sshKeyPassphrase = settings.getString("ssh_key_passphrase", null)
if (showError) {
passphrase.error = "Wrong passphrase"
}
val jsch = JSch()
try {
val keyPair = KeyPair.load(jsch, callingActivity.filesDir.toString() + "/.ssh_key")
if (keyPair.isEncrypted) {
if (sshKeyPassphrase != null && sshKeyPassphrase.isNotEmpty()) {
if (keyPair.decrypt(sshKeyPassphrase)) {
// Authenticate using the ssh-key and then execute the command
setAuthentication(sshKey, username, sshKeyPassphrase).execute()
} else {
// call back the method
executeAfterAuthentication(connectionMode, username, sshKey, identity, true)
}
} else {
MaterialAlertDialogBuilder(callingActivity)
.setTitle(callingActivity.resources.getString(R.string.passphrase_dialog_title))
.setMessage(callingActivity.resources.getString(R.string.passphrase_dialog_text))
.setView(dialogView)
.setPositiveButton(callingActivity.resources.getString(R.string.dialog_ok)) { _, _ ->
if (keyPair.decrypt(passphrase.text.toString())) {
val rememberPassphrase = (dialogView.findViewById<View>(R.id.sshkey_remember_passphrase) as CheckBox).isChecked
if (rememberPassphrase) {
settings.edit().putString("ssh_key_passphrase", passphrase.text.toString()).apply()
}
// Authenticate using the ssh-key and then execute the command
setAuthentication(sshKey, username, passphrase.text.toString()).execute()
} else {
settings.edit().putString("ssh_key_passphrase", null).apply()
// call back the method
executeAfterAuthentication(connectionMode, username, sshKey, identity, true)
}
}.setNegativeButton(callingActivity.resources.getString(R.string.dialog_cancel)) { _, _ ->
// Do nothing.
}.show()
}
} else {
setAuthentication(sshKey, username, "").execute()
}
} catch (e: JSchException) {
e.printStackTrace()
MaterialAlertDialogBuilder(callingActivity)
.setTitle("Unable to open the ssh-key")
.setMessage("Please check that it was imported.")
.setPositiveButton("Ok") { _, _ -> callingActivity.finish() }
.show()
}
}
} else if (connectionMode.equals("OpenKeychain", ignoreCase = true)) {
setAuthentication(username, identity).execute()
} else {
val password = EditText(callingActivity)
password.hint = "Password"
password.width = LinearLayout.LayoutParams.MATCH_PARENT
password.inputType = InputType.TYPE_CLASS_TEXT or InputType.TYPE_TEXT_VARIATION_PASSWORD
MaterialAlertDialogBuilder(callingActivity)
.setTitle(callingActivity.resources.getString(R.string.passphrase_dialog_title))
.setMessage(callingActivity.resources.getString(R.string.password_dialog_text))
.setView(password)
.setPositiveButton(callingActivity.resources.getString(R.string.dialog_ok)) { _, _ ->
// authenticate using the user/pwd and then execute the command
setAuthentication(username, password.text.toString()).execute()
}
.setNegativeButton(callingActivity.resources.getString(R.string.dialog_cancel)) { _, _ ->
callingActivity.finish()
}
.show()
}
}
/**
* Action to execute on error
*/
open fun onError(errorMessage: String) {
MaterialAlertDialogBuilder(callingActivity)
.setTitle(callingActivity.resources.getString(R.string.jgit_error_dialog_title))
.setMessage(callingActivity.resources.getString(R.string.jgit_error_dialog_text) + errorMessage)
.setPositiveButton(callingActivity.resources.getString(R.string.dialog_ok)) { _, _ ->
callingActivity.setResult(Activity.RESULT_CANCELED)
callingActivity.finish()
}
.show()
}
/**
* Action to execute on success
*/
open fun onSuccess() {}
companion object {
const val GET_SSH_KEY_FROM_CLONE = 201
}
}
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