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/*
* Copyright (c) 2012-2016 Arne Schwabe
* Distributed under the GNU GPL v2 with additional terms. For full terms see the file doc/LICENSE.txt
*/
package de.blinkt.openvpn.activities
import android.Manifest
import android.annotation.TargetApi
import android.app.Activity
import android.app.AlertDialog
import android.content.ActivityNotFoundException
import android.content.Intent
import android.content.pm.PackageManager
import android.net.Uri
import android.os.AsyncTask
import android.os.Build
import android.os.Bundle
import android.os.Environment
import android.provider.OpenableColumns
import android.security.KeyChain
import android.text.TextUtils
import android.util.Base64
import android.util.Pair
import android.view.Menu
import android.view.MenuItem
import android.view.View
import android.view.ViewGroup
import android.widget.*
import de.blinkt.openvpn.R
import de.blinkt.openvpn.VpnProfile
import de.blinkt.openvpn.core.ConfigParser
import de.blinkt.openvpn.core.ConfigParser.ConfigParseError
import de.blinkt.openvpn.core.ProfileManager
import de.blinkt.openvpn.fragments.Utils
import de.blinkt.openvpn.views.FileSelectLayout
import de.blinkt.openvpn.views.FileSelectLayout.FileSelectCallback
import java.io.*
import java.net.URLDecoder
import java.nio.charset.StandardCharsets
import java.util.*
class ConfigConverter : BaseActivity(), FileSelectCallback, View.OnClickListener {
private var mResult: VpnProfile? = null
@Transient
private var mPathsegments: List<String>? = null
private var mAliasName: String? = null
private val fileSelectMap = HashMap<Utils.FileType, FileSelectLayout?>()
private var mEmbeddedPwFile: String? = null
private val mLogEntries = Vector<String>()
private var mSourceUri: Uri? = null
private lateinit var mProfilename: EditText
private var mImportTask: AsyncTask<Void, Void, Int>? = null
private lateinit var mLogLayout: LinearLayout
private lateinit var mProfilenameLabel: TextView
override fun onClick(v: View) {
if (v.id == R.id.fab_save)
userActionSaveProfile()
if (v.id == R.id.permssion_hint && Build.VERSION.SDK_INT == Build.VERSION_CODES.M)
doRequestSDCardPermission(PERMISSION_REQUEST_EMBED_FILES)
}
@TargetApi(Build.VERSION_CODES.M)
private fun doRequestSDCardPermission(requestCode: Int) {
requestPermissions(arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE), requestCode)
}
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
// Permission declined, do nothing
if (grantResults.size == 0 || grantResults[0] == PackageManager.PERMISSION_DENIED)
return
// Reset file select dialogs
findViewById<View>(R.id.files_missing_hint).visibility = View.GONE
findViewById<View>(R.id.permssion_hint).visibility = View.GONE
val fileroot = findViewById<View>(R.id.config_convert_root) as LinearLayout
var i = 0
while (i < fileroot.childCount) {
if (fileroot.getChildAt(i) is FileSelectLayout)
fileroot.removeViewAt(i)
else
i++
}
if (requestCode == PERMISSION_REQUEST_EMBED_FILES)
embedFiles(null)
else if (requestCode == PERMISSION_REQUEST_READ_URL) {
if (mSourceUri != null)
doImportUri(mSourceUri!!)
}
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
if (item.itemId == R.id.cancel) {
setResult(Activity.RESULT_CANCELED)
finish()
} else if (item.itemId == R.id.ok) {
return userActionSaveProfile()
}
return super.onOptionsItemSelected(item)
}
private fun userActionSaveProfile(): Boolean {
if (mResult == null) {
log(R.string.import_config_error)
Toast.makeText(this, R.string.import_config_error, Toast.LENGTH_LONG).show()
return true
}
mResult!!.mName = mProfilename.text.toString()
val vpl = ProfileManager.getInstance(this)
if (vpl.getProfileByName(mResult!!.mName) != null) {
mProfilename.error = getString(R.string.duplicate_profile_name)
return true
}
val `in` = installPKCS12()
if (`in` != null)
startActivityForResult(`in`, RESULT_INSTALLPKCS12)
else
saveProfile()
return true
}
override fun onSaveInstanceState(outState: Bundle) {
super.onSaveInstanceState(outState)
if (mResult != null)
outState.putSerializable(VPNPROFILE, mResult)
outState.putString("mAliasName", mAliasName)
val logentries = mLogEntries.toTypedArray()
outState.putStringArray("logentries", logentries)
val fileselects = IntArray(fileSelectMap.size)
var k = 0
for (key in fileSelectMap.keys) {
fileselects[k] = key.value
k++
}
outState.putIntArray("fileselects", fileselects)
outState.putString("pwfile", mEmbeddedPwFile)
outState.putParcelable("mSourceUri", mSourceUri)
}
override fun onActivityResult(requestCode: Int, resultCode: Int, result: Intent?) {
if (requestCode == RESULT_INSTALLPKCS12 && resultCode == Activity.RESULT_OK) {
showCertDialog()
}
if (resultCode == Activity.RESULT_OK && requestCode >= CHOOSE_FILE_OFFSET) {
val type = Utils.FileType.getFileTypeByValue(requestCode - CHOOSE_FILE_OFFSET)
val fs = fileSelectMap[type]
fs!!.parseResponse(result, this)
val data = fs.data
when (type) {
Utils.FileType.USERPW_FILE -> mEmbeddedPwFile = data
Utils.FileType.PKCS12 -> mResult!!.mPKCS12Filename = data
Utils.FileType.TLS_AUTH_FILE -> mResult!!.mTLSAuthFilename = data
Utils.FileType.CA_CERTIFICATE -> mResult!!.mCaFilename = data
Utils.FileType.CLIENT_CERTIFICATE -> mResult!!.mClientCertFilename = data
Utils.FileType.KEYFILE -> mResult!!.mClientKeyFilename = data
Utils.FileType.CRL_FILE -> mResult!!.mCrlFilename = data
else -> throw RuntimeException("Type is wrong somehow?")
}
}
super.onActivityResult(requestCode, resultCode, result)
}
private fun saveProfile() {
val result = Intent()
val vpl = ProfileManager.getInstance(this)
if (!TextUtils.isEmpty(mEmbeddedPwFile))
ConfigParser.useEmbbedUserAuth(mResult, mEmbeddedPwFile)
vpl.addProfile(mResult)
vpl.saveProfile(this, mResult)
vpl.saveProfileList(this)
result.putExtra(VpnProfile.EXTRA_PROFILEUUID, mResult!!.uuid.toString())
setResult(Activity.RESULT_OK, result)
finish()
}
fun showCertDialog() {
try {
KeyChain.choosePrivateKeyAlias(this,
{ alias ->
// Credential alias selected. Remember the alias selection for future use.
mResult!!.mAlias = alias
saveProfile()
},
arrayOf("RSA", "EC"), null, // issuer, null for any
mResult!!.mServerName, // host name of server requesting the cert, null if unavailable
-1, // port of server requesting the cert, -1 if unavailable
mAliasName)// List of acceptable key types. null for any
// alias to preselect, null if unavailable
} catch (anf: ActivityNotFoundException) {
val ab = AlertDialog.Builder(this)
ab.setTitle(R.string.broken_image_cert_title)
ab.setMessage(R.string.broken_image_cert)
ab.setPositiveButton(android.R.string.ok, null)
ab.show()
}
}
private fun installPKCS12(): Intent? {
if (!(findViewById<View>(R.id.importpkcs12) as CheckBox).isChecked) {
setAuthTypeToEmbeddedPKCS12()
return null
}
var pkcs12datastr = mResult!!.mPKCS12Filename
if (VpnProfile.isEmbedded(pkcs12datastr)) {
val inkeyIntent = KeyChain.createInstallIntent()
pkcs12datastr = VpnProfile.getEmbeddedContent(pkcs12datastr)
val pkcs12data = Base64.decode(pkcs12datastr, Base64.DEFAULT)
inkeyIntent.putExtra(KeyChain.EXTRA_PKCS12, pkcs12data)
if (mAliasName == "")
mAliasName = null
if (mAliasName != null) {
inkeyIntent.putExtra(KeyChain.EXTRA_NAME, mAliasName)
}
return inkeyIntent
}
return null
}
private fun setAuthTypeToEmbeddedPKCS12() {
if (VpnProfile.isEmbedded(mResult!!.mPKCS12Filename)) {
if (mResult!!.mAuthenticationType == VpnProfile.TYPE_USERPASS_KEYSTORE)
mResult!!.mAuthenticationType = VpnProfile.TYPE_USERPASS_PKCS12
if (mResult!!.mAuthenticationType == VpnProfile.TYPE_KEYSTORE)
mResult!!.mAuthenticationType = VpnProfile.TYPE_PKCS12
}
}
private fun getUniqueProfileName(possibleName: String?): String {
var i = 0
val vpl = ProfileManager.getInstance(this)
var newname = possibleName
// Default to
if (mResult!!.mName != null && ConfigParser.CONVERTED_PROFILE != mResult!!.mName)
newname = mResult!!.mName
while (newname == null || vpl.getProfileByName(newname) != null) {
i++
if (i == 1)
newname = getString(R.string.converted_profile)
else
newname = getString(R.string.converted_profile_i, i)
}
return newname
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
val inflater = menuInflater
inflater.inflate(R.menu.import_menu, menu)
return true
}
private fun embedFile(filename: String?, type: Utils.FileType, onlyFindFileAndNullonNotFound: Boolean): String? {
if (filename == null)
return null
// Already embedded, nothing to do
if (VpnProfile.isEmbedded(filename))
return filename
val possibleFile = findFile(filename, type)
return if (possibleFile == null)
if (onlyFindFileAndNullonNotFound)
null
else
filename
else if (onlyFindFileAndNullonNotFound)
possibleFile.absolutePath
else
readFileContent(possibleFile, type == Utils.FileType.PKCS12)
}
private fun getFileDialogInfo(type: Utils.FileType): Pair<Int, String> {
var titleRes = 0
var value: String? = null
when (type) {
Utils.FileType.KEYFILE -> {
titleRes = R.string.client_key_title
if (mResult != null)
value = mResult!!.mClientKeyFilename
}
Utils.FileType.CLIENT_CERTIFICATE -> {
titleRes = R.string.client_certificate_title
if (mResult != null)
value = mResult!!.mClientCertFilename
}
Utils.FileType.CA_CERTIFICATE -> {
titleRes = R.string.ca_title
if (mResult != null)
value = mResult!!.mCaFilename
}
Utils.FileType.TLS_AUTH_FILE -> {
titleRes = R.string.tls_auth_file
if (mResult != null)
value = mResult!!.mTLSAuthFilename
}
Utils.FileType.PKCS12 -> {
titleRes = R.string.client_pkcs12_title
if (mResult != null)
value = mResult!!.mPKCS12Filename
}
Utils.FileType.USERPW_FILE -> {
titleRes = R.string.userpw_file
value = mEmbeddedPwFile
}
Utils.FileType.CRL_FILE -> {
titleRes = R.string.crl_file
value = mResult!!.mCrlFilename
}
Utils.FileType.OVPN_CONFIG -> TODO()
}
return Pair.create(titleRes, value)
}
private fun findFile(filename: String?, fileType: Utils.FileType): File? {
val foundfile = findFileRaw(filename)
if (foundfile == null && filename != null && filename != "") {
log(R.string.import_could_not_open, filename)
}
fileSelectMap[fileType] = null
return foundfile
}
private fun addMissingFileDialogs() {
for ((key, value) in fileSelectMap) {
if (value == null)
addFileSelectDialog(key)
}
}
private fun addFileSelectDialog(type: Utils.FileType?) {
val fileDialogInfo = getFileDialogInfo(type!!)
val isCert = type == Utils.FileType.CA_CERTIFICATE || type == Utils.FileType.CLIENT_CERTIFICATE
val fl = FileSelectLayout(this, getString(fileDialogInfo.first), isCert, false)
fileSelectMap[type] = fl
fl.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
(findViewById<View>(R.id.config_convert_root) as LinearLayout).addView(fl, 2)
findViewById<View>(R.id.files_missing_hint).visibility = View.VISIBLE
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.M)
checkPermission()
fl.setData(fileDialogInfo.second, this)
val i = getFileLayoutOffset(type)
fl.setCaller(this, i, type)
}
@TargetApi(Build.VERSION_CODES.M)
private fun checkPermission() {
if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
findViewById<View>(R.id.permssion_hint).visibility = View.VISIBLE
findViewById<View>(R.id.permssion_hint).setOnClickListener(this)
}
}
private fun getFileLayoutOffset(type: Utils.FileType): Int {
return CHOOSE_FILE_OFFSET + type.value
}
private fun findFileRaw(filename: String?): File? {
if (filename == null || filename == "")
return null
// Try diffent path relative to /mnt/sdcard
val sdcard = Environment.getExternalStorageDirectory()
val root = File("/")
val dirlist = HashSet<File>()
for (i in mPathsegments!!.indices.reversed()) {
var path = ""
for (j in 0..i) {
path += "/" + mPathsegments!![j]
}
// Do a little hackish dance for the Android File Importer
// /document/primary:ovpn/openvpn-imt.conf
if (path.indexOf(':') != -1 && path.lastIndexOf('/') > path.indexOf(':')) {
var possibleDir = path.substring(path.indexOf(':') + 1, path.length)
// Unquote chars in the path
try {
possibleDir = URLDecoder.decode(possibleDir, "UTF-8")
} catch (ignored: UnsupportedEncodingException) {
}
possibleDir = possibleDir.substring(0, possibleDir.lastIndexOf('/'))
dirlist.add(File(sdcard, possibleDir))
}
dirlist.add(File(path))
}
dirlist.add(sdcard)
dirlist.add(root)
val fileparts = filename.split("/".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
for (rootdir in dirlist) {
var suffix = ""
for (i in fileparts.indices.reversed()) {
if (i == fileparts.size - 1)
suffix = fileparts[i]
else
suffix = fileparts[i] + "/" + suffix
val possibleFile = File(rootdir, suffix)
if (possibleFile.canRead())
return possibleFile
}
}
return null
}
internal fun readFileContent(possibleFile: File, base64encode: Boolean): String? {
val filedata: ByteArray
try {
filedata = readBytesFromFile(possibleFile)
} catch (e: IOException) {
log(e.localizedMessage)
return null
}
val data: String
if (base64encode) {
data = Base64.encodeToString(filedata, Base64.DEFAULT)
} else {
data = String(filedata)
}
return VpnProfile.DISPLAYNAME_TAG + possibleFile.name + VpnProfile.INLINE_TAG + data
}
@Throws(IOException::class)
private fun readBytesFromFile(file: File): ByteArray {
val input = FileInputStream(file)
val len = file.length()
if (len > VpnProfile.MAX_EMBED_FILE_SIZE)
throw IOException("File size of file to import too large.")
// Create the byte array to hold the data
val bytes = ByteArray(len.toInt())
// Read in the bytes
var offset = 0
var bytesRead: Int
do {
bytesRead = input.read(bytes, offset, bytes.size - offset)
offset += bytesRead
} while (offset < bytes.size && bytesRead >= 0)
input.close()
return bytes
}
internal fun embedFiles(cp: ConfigParser?) {
// This where I would like to have a c++ style
// void embedFile(std::string & option)
if (mResult!!.mPKCS12Filename != null) {
val pkcs12file = findFileRaw(mResult!!.mPKCS12Filename)
if (pkcs12file != null) {
mAliasName = pkcs12file.name.replace(".p12", "")
} else {
mAliasName = "Imported PKCS12"
}
}
mResult!!.mCaFilename = embedFile(mResult!!.mCaFilename, Utils.FileType.CA_CERTIFICATE, false)
mResult!!.mClientCertFilename = embedFile(mResult!!.mClientCertFilename, Utils.FileType.CLIENT_CERTIFICATE, false)
mResult!!.mClientKeyFilename = embedFile(mResult!!.mClientKeyFilename, Utils.FileType.KEYFILE, false)
mResult!!.mTLSAuthFilename = embedFile(mResult!!.mTLSAuthFilename, Utils.FileType.TLS_AUTH_FILE, false)
mResult!!.mPKCS12Filename = embedFile(mResult!!.mPKCS12Filename, Utils.FileType.PKCS12, false)
mResult!!.mCrlFilename = embedFile(mResult!!.mCrlFilename, Utils.FileType.CRL_FILE, true)
if (cp != null) {
mEmbeddedPwFile = cp.authUserPassFile
mEmbeddedPwFile = embedFile(cp.authUserPassFile, Utils.FileType.USERPW_FILE, false)
}
}
private fun updateFileSelectDialogs() {
for ((key, value) in fileSelectMap) {
value?.setData(getFileDialogInfo(key).second, this)
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.config_converter)
val fab_button = findViewById<ImageButton?>(R.id.fab_save)
if (fab_button != null) {
fab_button.setOnClickListener(this)
findViewById<View>(R.id.fab_footerspace).visibility = View.VISIBLE
}
mLogLayout = findViewById<View>(R.id.config_convert_root) as LinearLayout
mProfilename = findViewById<View>(R.id.profilename) as EditText
mProfilenameLabel = findViewById<View>(R.id.profilename_label) as TextView
if (savedInstanceState != null && savedInstanceState.containsKey(VPNPROFILE)) {
mResult = savedInstanceState.getSerializable(VPNPROFILE) as VpnProfile?
mAliasName = savedInstanceState.getString("mAliasName")
mEmbeddedPwFile = savedInstanceState.getString("pwfile")
mSourceUri = savedInstanceState.getParcelable("mSourceUri")
mProfilename.setText(mResult!!.mName)
if (savedInstanceState.containsKey("logentries")) {
for (logItem in savedInstanceState.getStringArray("logentries")!!)
log(logItem)
}
if (savedInstanceState.containsKey("fileselects")) {
for (k in savedInstanceState.getIntArray("fileselects")!!) {
addFileSelectDialog(Utils.FileType.getFileTypeByValue(k))
}
}
return
}
if (intent != null) {
doImportIntent(intent)
// We parsed the intent, relay on saved instance for restoring
setIntent(null)
}
}
private fun doImportIntent(intent: Intent) {
if (intent.action.equals(IMPORT_PROFILE_DATA)) {
val data = intent.getStringExtra(Intent.EXTRA_TEXT)
if (data != null) {
startImportTask(Uri.fromParts("inline", "inlinetext", null),
"imported profiles from AS", data);
}
}
}
private fun doImportUri(data: Uri) {
//log(R.string.import_experimental);
log(R.string.importing_config, data.toString())
var possibleName: String? = null
if (data.scheme != null && data.scheme == "file" || data.lastPathSegment != null && (data.lastPathSegment!!.endsWith(".ovpn") || data.lastPathSegment!!.endsWith(".conf"))) {
possibleName = data.lastPathSegment
if (possibleName!!.lastIndexOf('/') != -1)
possibleName = possibleName.substring(possibleName.lastIndexOf('/') + 1)
}
mPathsegments = data.pathSegments
val cursor = contentResolver.query(data, null, null, null, null)
try {
if (cursor != null && cursor.moveToFirst()) {
var columnIndex = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME)
if (columnIndex != -1) {
val displayName = cursor.getString(columnIndex)
if (displayName != null)
possibleName = displayName
}
columnIndex = cursor.getColumnIndex("mime_type")
if (columnIndex != -1) {
log("Mime type: " + cursor.getString(columnIndex))
}
}
} finally {
cursor?.close()
}
if (possibleName != null) {
possibleName = possibleName.replace(".ovpn", "")
possibleName = possibleName.replace(".conf", "")
}
startImportTask(data, possibleName, "")
}
private fun startImportTask(data: Uri, possibleName: String?, inlineData:String) {
mImportTask = object : AsyncTask<Void, Void, Int>() {
private var mProgress: ProgressBar? = null
override fun onPreExecute() {
mProgress = ProgressBar(this@ConfigConverter)
addViewToLog(mProgress)
}
override fun doInBackground(vararg params: Void): Int? {
try {
var inputStream:InputStream?
if (data.scheme.equals("inline")) {
inputStream = inlineData.byteInputStream()
} else {
inputStream = contentResolver.openInputStream(data)
}
if (inputStream != null) {
doImport(inputStream)
}
if (mResult == null)
return -3
} catch (se: IOException) {
log(R.string.import_content_resolve_error.toString() + ":" + se.localizedMessage)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
checkMarschmallowFileImportError(data)
return -2
} catch (se: SecurityException) {
log(R.string.import_content_resolve_error.toString() + ":" + se.localizedMessage)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
checkMarschmallowFileImportError(data)
return -2
}
return 0
}
override fun onPostExecute(errorCode: Int?) {
mLogLayout.removeView(mProgress)
addMissingFileDialogs()
updateFileSelectDialogs()
if (errorCode == 0) {
displayWarnings()
mResult!!.mName = getUniqueProfileName(possibleName)
mProfilename.visibility = View.VISIBLE
mProfilenameLabel.visibility = View.VISIBLE
mProfilename.setText(mResult!!.name)
log(R.string.import_done)
}
}
}.execute()
}
@TargetApi(Build.VERSION_CODES.M)
private fun checkMarschmallowFileImportError(data: Uri?) {
// Permission already granted, not the source of the error
if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
return
// We got a file:/// URL and have no permission to read it. Technically an error of the calling app since
// it makes an assumption about other apps being able to read the url but well ...
if (data != null && "file" == data.scheme)
doRequestSDCardPermission(PERMISSION_REQUEST_READ_URL)
}
override fun onStart() {
super.onStart()
}
private fun log(logmessage: String?) {
runOnUiThread {
val tv = TextView(this@ConfigConverter)
mLogEntries.add(logmessage)
tv.text = logmessage
addViewToLog(tv)
}
}
private fun addViewToLog(view: View?) {
mLogLayout.addView(view, mLogLayout.childCount - 1)
}
private fun doImport(inputStream: InputStream) {
val cp = ConfigParser()
try {
val isr = InputStreamReader(inputStream)
cp.parseConfig(isr)
mResult = cp.convertProfile()
embedFiles(cp)
return
} catch (e: IOException) {
log(R.string.error_reading_config_file)
log(e.localizedMessage)
} catch (e: ConfigParseError) {
log(R.string.error_reading_config_file)
log(e.localizedMessage)
}
mResult = null
inputStream.close()
}
private fun displayWarnings() {
if (mResult!!.mUseCustomConfig) {
log(R.string.import_warning_custom_options)
var copt = mResult!!.mCustomConfigOptions
if (copt.startsWith("#")) {
val until = copt.indexOf('\n')
copt = copt.substring(until + 1)
}
log(copt)
}
if (mResult!!.mAuthenticationType == VpnProfile.TYPE_KEYSTORE || mResult!!.mAuthenticationType == VpnProfile.TYPE_USERPASS_KEYSTORE) {
findViewById<View>(R.id.importpkcs12).visibility = View.VISIBLE
}
}
private fun log(ressourceId: Int, vararg formatArgs: Any) {
log(getString(ressourceId, *formatArgs))
}
companion object {
@kotlin.jvm.JvmField
val IMPORT_PROFILE = "de.blinkt.openvpn.IMPORT_PROFILE"
val IMPORT_PROFILE_DATA = "de.blinkt.openvpn.IMPORT_PROFILE_DATA"
private val RESULT_INSTALLPKCS12 = 7
private val CHOOSE_FILE_OFFSET = 1000
val VPNPROFILE = "vpnProfile"
private val PERMISSION_REQUEST_EMBED_FILES = 37231
private val PERMISSION_REQUEST_READ_URL = PERMISSION_REQUEST_EMBED_FILES + 1
}
}
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