+++ /dev/null
-/*
- * Copyright 2017-2023 Soren Stoutner <soren@stoutner.com>.
- *
- * This file is part of Privacy Browser Android <https://www.stoutner.com/privacy-browser-android>.
- *
- * Privacy Browser Android is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Privacy Browser Android is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Privacy Browser Android. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.stoutner.privacybrowser.activities
-
-import android.os.Bundle
-import android.text.SpannableStringBuilder
-import android.text.style.ForegroundColorSpan
-import android.util.TypedValue
-import android.view.KeyEvent
-import android.view.Menu
-import android.view.MenuItem
-import android.view.View
-import android.view.View.OnFocusChangeListener
-import android.view.WindowManager
-import android.view.inputmethod.InputMethodManager
-import android.widget.EditText
-import android.widget.ProgressBar
-import android.widget.TextView
-
-import androidx.appcompat.app.ActionBar
-import androidx.appcompat.app.AppCompatActivity
-import androidx.appcompat.widget.Toolbar
-import androidx.core.app.NavUtils
-import androidx.fragment.app.DialogFragment
-import androidx.lifecycle.ViewModelProvider
-import androidx.preference.PreferenceManager
-import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
-
-import com.google.android.material.snackbar.Snackbar
-
-import com.stoutner.privacybrowser.R
-import com.stoutner.privacybrowser.dialogs.AboutViewSourceDialog
-import com.stoutner.privacybrowser.dialogs.UntrustedSslCertificateDialog
-import com.stoutner.privacybrowser.dialogs.UntrustedSslCertificateDialog.UntrustedSslCertificateListener
-import com.stoutner.privacybrowser.helpers.ProxyHelper
-import com.stoutner.privacybrowser.helpers.UrlHelper
-import com.stoutner.privacybrowser.viewmodelfactories.WebViewSourceFactory
-import com.stoutner.privacybrowser.viewmodels.WebViewSource
-
-// Define the public constants.
-const val USER_AGENT = "user_agent"
-
-class ViewSourceActivity: AppCompatActivity(), UntrustedSslCertificateListener {
- // Declare the class variables.
- private lateinit var initialGrayColorSpan: ForegroundColorSpan
- private lateinit var finalGrayColorSpan: ForegroundColorSpan
- private lateinit var redColorSpan: ForegroundColorSpan
- private lateinit var webViewSource: WebViewSource
-
- // Declare the class views.
- private lateinit var urlEditText: EditText
- private lateinit var requestHeadersTitleTextView: TextView
- private lateinit var requestHeadersTextView: TextView
- private lateinit var responseMessageTitleTextView: TextView
- private lateinit var responseMessageTextView: TextView
- private lateinit var responseHeadersTitleTextView: TextView
- private lateinit var responseBodyTitleTextView: TextView
-
- override fun onCreate(savedInstanceState: Bundle?) {
- // Get a handle for the shared preferences.
- val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(applicationContext)
-
- // Get the preferences.
- val allowScreenshots = sharedPreferences.getBoolean(getString(R.string.allow_screenshots_key), false)
- val bottomAppBar = sharedPreferences.getBoolean(getString(R.string.bottom_app_bar_key), false)
-
- // Disable screenshots if not allowed.
- if (!allowScreenshots) {
- window.addFlags(WindowManager.LayoutParams.FLAG_SECURE)
- }
-
- // Run the default commands.
- super.onCreate(savedInstanceState)
-
- // Get the launching intent
- val intent = intent
-
- // Get the information from the intent.
- val currentUrl = intent.getStringExtra(CURRENT_URL)!!
- val userAgent = intent.getStringExtra(USER_AGENT)!!
-
- // Set the content view.
- if (bottomAppBar) {
- setContentView(R.layout.view_source_bottom_appbar)
- } else {
- setContentView(R.layout.view_source_top_appbar)
- }
-
- // Get a handle for the toolbar.
- val toolbar = findViewById<Toolbar>(R.id.view_source_toolbar)
-
- // Set the support action bar.
- setSupportActionBar(toolbar)
-
- // Get a handle for the action bar.
- val actionBar = supportActionBar!!
-
- // Add the custom layout to the action bar.
- actionBar.setCustomView(R.layout.view_source_appbar_custom_view)
-
- // Instruct the action bar to display a custom layout.
- actionBar.displayOptions = ActionBar.DISPLAY_SHOW_CUSTOM
-
- // Get handles for the views.
- urlEditText = findViewById(R.id.url_edittext)
- val progressBar = findViewById<ProgressBar>(R.id.progress_bar)
- val swipeRefreshLayout = findViewById<SwipeRefreshLayout>(R.id.view_source_swiperefreshlayout)
- requestHeadersTitleTextView = findViewById(R.id.request_headers_title_textview)
- requestHeadersTextView = findViewById(R.id.request_headers_textview)
- responseMessageTitleTextView = findViewById(R.id.response_message_title_textview)
- responseMessageTextView = findViewById(R.id.response_message_textview)
- responseHeadersTitleTextView = findViewById(R.id.response_headers_title_textview)
- val responseHeadersTextView = findViewById<TextView>(R.id.response_headers_textview)
- responseBodyTitleTextView = findViewById(R.id.response_body_title_textview)
- val responseBodyTextView = findViewById<TextView>(R.id.response_body_textview)
-
- // Populate the URL text box.
- urlEditText.setText(currentUrl)
-
- // Initialize the gray foreground color spans for highlighting the URLs.
- initialGrayColorSpan = ForegroundColorSpan(getColor(R.color.gray_500))
- finalGrayColorSpan = ForegroundColorSpan(getColor(R.color.gray_500))
- redColorSpan = ForegroundColorSpan(getColor(R.color.red_text))
-
- // Apply text highlighting to the URL.
- UrlHelper.highlightSyntax(urlEditText, initialGrayColorSpan, finalGrayColorSpan, redColorSpan)
-
- // Get a handle for the input method manager, which is used to hide the keyboard.
- val inputMethodManager = (getSystemService(INPUT_METHOD_SERVICE) as InputMethodManager)
-
- // Remove the formatting from the URL when the user is editing the text.
- urlEditText.onFocusChangeListener = OnFocusChangeListener { _: View?, hasFocus: Boolean ->
- if (hasFocus) { // The user is editing the URL text box.
- // Remove the highlighting.
- urlEditText.text.removeSpan(redColorSpan)
- urlEditText.text.removeSpan(initialGrayColorSpan)
- urlEditText.text.removeSpan(finalGrayColorSpan)
- } else { // The user has stopped editing the URL text box.
- // Hide the soft keyboard.
- inputMethodManager.hideSoftInputFromWindow(urlEditText.windowToken, 0)
-
- // Move to the beginning of the string.
- urlEditText.setSelection(0)
-
- // Reapply the highlighting.
- UrlHelper.highlightSyntax(urlEditText, initialGrayColorSpan, finalGrayColorSpan, redColorSpan)
- }
- }
-
- // Set the refresh color scheme according to the theme.
- swipeRefreshLayout.setColorSchemeResources(R.color.blue_text)
-
- // Initialize a color background typed value.
- val colorBackgroundTypedValue = TypedValue()
-
- // Get the color background from the theme.
- theme.resolveAttribute(android.R.attr.colorBackground, colorBackgroundTypedValue, true)
-
- // Get the color background int from the typed value.
- val colorBackgroundInt = colorBackgroundTypedValue.data
-
- // Set the swipe refresh background color.
- swipeRefreshLayout.setProgressBackgroundColorSchemeColor(colorBackgroundInt)
-
- // Get the list of locales.
- val localeList = resources.configuration.locales
-
- // Initialize a string builder to extract the locales from the list.
- val localesStringBuilder = StringBuilder()
-
- // Initialize a `q` value, which is used by `WebView` to indicate the order of importance of the languages.
- var q = 10
-
- // Populate the string builder with the contents of the locales list.
- for (i in 0 until localeList.size()) {
- // Append a comma if there is already an item in the string builder.
- if (i > 0) {
- localesStringBuilder.append(",")
- }
-
- // Get the locale from the list.
- val locale = localeList[i]
-
- // Add the locale to the string. `locale` by default displays as `en_US`, but WebView uses the `en-US` format.
- localesStringBuilder.append(locale.language)
- localesStringBuilder.append("-")
- localesStringBuilder.append(locale.country)
-
- // If not the first locale, append `;q=0.x`, which drops by .1 for each removal from the main locale until q=0.1.
- if (q < 10) {
- localesStringBuilder.append(";q=0.")
- localesStringBuilder.append(q)
- }
-
- // Decrement `q` if it is greater than 1.
- if (q > 1) {
- q--
- }
-
- // Add a second entry for the language only portion of the locale.
- localesStringBuilder.append(",")
- localesStringBuilder.append(locale.language)
-
- // Append `1;q=0.x`, which drops by .1 for each removal form the main locale until q=0.1.
- localesStringBuilder.append(";q=0.")
- localesStringBuilder.append(q)
-
- // Decrement `q` if it is greater than 1.
- if (q > 1) {
- q--
- }
- }
-
- // Instantiate the proxy helper.
- val proxyHelper = ProxyHelper()
-
- // Get the current proxy.
- val proxy = proxyHelper.getCurrentProxy(this)
-
- // Make the progress bar visible.
- progressBar.visibility = View.VISIBLE
-
- // Set the progress bar to be indeterminate.
- progressBar.isIndeterminate = true
-
- // Update the layout.
- updateLayout(currentUrl)
-
- // Instantiate the WebView source factory.
- val webViewSourceFactory: ViewModelProvider.Factory = WebViewSourceFactory(currentUrl, userAgent, localesStringBuilder.toString(), proxy, contentResolver, MainWebViewActivity.executorService)
-
- // Instantiate the WebView source view model class.
- webViewSource = ViewModelProvider(this, webViewSourceFactory)[WebViewSource::class.java]
-
- // Create a source observer.
- webViewSource.observeSource().observe(this) { sourceStringArray: Array<SpannableStringBuilder> ->
- // Populate the text views. This can take a long time, and freezes the user interface, if the response body is particularly large.
- requestHeadersTextView.text = sourceStringArray[0]
- responseMessageTextView.text = sourceStringArray[1]
- responseHeadersTextView.text = sourceStringArray[2]
- responseBodyTextView.text = sourceStringArray[3]
-
- // Hide the progress bar.
- progressBar.isIndeterminate = false
- progressBar.visibility = View.GONE
-
- //Stop the swipe to refresh indicator if it is running
- swipeRefreshLayout.isRefreshing = false
- }
-
- // Create an error observer.
- webViewSource.observeErrors().observe(this) { errorString: String ->
- // Display an error snackbar if the string is not `""`.
- if (errorString != "") {
- if (errorString.startsWith("javax.net.ssl.SSLHandshakeException")) {
- // Instantiate the untrusted SSL certificate dialog.
- val untrustedSslCertificateDialog = UntrustedSslCertificateDialog()
-
- // Show the untrusted SSL certificate dialog.
- untrustedSslCertificateDialog.show(supportFragmentManager, getString(R.string.invalid_certificate))
- } else {
- // Display a snackbar with the error message.
- Snackbar.make(swipeRefreshLayout, errorString, Snackbar.LENGTH_LONG).show()
- }
- }
- }
-
- // Implement swipe to refresh.
- swipeRefreshLayout.setOnRefreshListener {
- // Make the progress bar visible.
- progressBar.visibility = View.VISIBLE
-
- // Set the progress bar to be indeterminate.
- progressBar.isIndeterminate = true
-
- // Get the URL.
- val urlString = urlEditText.text.toString()
-
- // Update the layout.
- updateLayout(urlString)
-
- // Get the updated source.
- webViewSource.updateSource(urlString, false)
- }
-
- // Set the go button on the keyboard to request new source data.
- urlEditText.setOnKeyListener { _: View?, keyCode: Int, event: KeyEvent ->
- // Request new source data if the enter key was pressed.
- if (event.action == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_ENTER) {
- // Hide the soft keyboard.
- inputMethodManager.hideSoftInputFromWindow(urlEditText.windowToken, 0)
-
- // Remove the focus from the URL box.
- urlEditText.clearFocus()
-
- // Make the progress bar visible.
- progressBar.visibility = View.VISIBLE
-
- // Set the progress bar to be indeterminate.
- progressBar.isIndeterminate = true
-
- // Get the URL.
- val urlString = urlEditText.text.toString()
-
- // Update the layout.
- updateLayout(urlString)
-
- // Get the updated source.
- webViewSource.updateSource(urlString, false)
-
- // Consume the key press.
- return@setOnKeyListener true
- } else {
- // Do not consume the key press.
- return@setOnKeyListener false
- }
- }
- }
-
- override fun onCreateOptionsMenu(menu: Menu): Boolean {
- // Inflate the menu.
- menuInflater.inflate(R.menu.view_source_options_menu, menu)
-
- // Display the menu.
- return true
- }
-
- override fun onOptionsItemSelected(menuItem: MenuItem): Boolean {
- // Instantiate the about dialog fragment.
- val aboutDialogFragment: DialogFragment = AboutViewSourceDialog()
-
- // Show the about alert dialog.
- aboutDialogFragment.show(supportFragmentManager, getString(R.string.about))
-
- // Consume the event.
- return true
- }
-
- // This method must be named `goBack()` and must have a View argument to match the default back arrow in the app bar.
- fun goBack(@Suppress("UNUSED_PARAMETER") view: View) {
- // Go home.
- NavUtils.navigateUpFromSameTask(this)
- }
-
- override fun loadAnyway() {
- // Load the URL anyway.
- webViewSource.updateSource(urlEditText.text.toString(), true)
- }
-
- private fun updateLayout(urlString: String) {
- if (urlString.startsWith("content://")) { // This is a content URL.
- // Hide the unused text views.
- requestHeadersTitleTextView.visibility = View.GONE
- requestHeadersTextView.visibility = View.GONE
- responseMessageTitleTextView.visibility = View.GONE
- responseMessageTextView.visibility = View.GONE
-
- // Change the text of the remaining title text views.
- responseHeadersTitleTextView.setText(R.string.content_metadata)
- responseBodyTitleTextView.setText(R.string.content_data)
- } else { // This is not a content URL.
- // Show the views.
- requestHeadersTitleTextView.visibility = View.VISIBLE
- requestHeadersTextView.visibility = View.VISIBLE
- responseMessageTitleTextView.visibility = View.VISIBLE
- responseMessageTextView.visibility = View.VISIBLE
-
- // Restore the text of the other title text views.
- responseHeadersTitleTextView.setText(R.string.response_headers)
- responseBodyTitleTextView.setText(R.string.response_body)
- }
- }
-}
projects / PrivacyBrowserAndroid.git / blobdiff