-/*
- * Copyright © 2017-2020 Soren Stoutner <soren@stoutner.com>.
- *
- * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
- *
- * Privacy Browser 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 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. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.stoutner.privacybrowser.asynctasks;
-
-import android.app.Activity;
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.graphics.Typeface;
-import android.os.AsyncTask;
-import android.os.Build;
-import android.os.LocaleList;
-import android.preference.PreferenceManager;
-import android.text.SpannableStringBuilder;
-import android.text.Spanned;
-import android.text.style.StyleSpan;
-import android.view.View;
-import android.webkit.CookieManager;
-import android.widget.ProgressBar;
-import android.widget.TextView;
-
-import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
-
-import com.stoutner.privacybrowser.R;
-import com.stoutner.privacybrowser.helpers.ProxyHelper;
-
-import java.io.BufferedInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.lang.ref.WeakReference;
-import java.net.HttpURLConnection;
-import java.net.Proxy;
-import java.net.URL;
-import java.util.Locale;
-
-// This must run asynchronously because it involves a network request. `String` declares the parameters. `Void` does not declare progress units. `SpannableStringBuilder[]` contains the results.
-public class GetSource extends AsyncTask<String, Void, SpannableStringBuilder[]> {
- // Define weak references to the calling context and activity.
- private WeakReference<Context> contextWeakReference;
- private WeakReference<Activity> activityWeakReference;
-
- // Store the user agent.
- private String userAgent;
-
- public GetSource(Context context, Activity activity, String userAgent) {
- // Populate the weak references to the calling context and activity.
- contextWeakReference = new WeakReference<>(context);
- activityWeakReference = new WeakReference<>(activity);
-
- // Store the user agent.
- this.userAgent = userAgent;
- }
-
- // `onPreExecute()` operates on the UI thread.
- @Override
- protected void onPreExecute() {
- // Get a handle for the calling activity.
- Activity activity = activityWeakReference.get();
-
- // Abort if the activity is gone.
- if ((activity == null) || activity.isFinishing()) {
- return;
- }
-
- // Get a handle for the progress bar.
- ProgressBar progressBar = activity.findViewById(R.id.progress_bar);
-
- // Make the progress bar visible.
- progressBar.setVisibility(View.VISIBLE);
-
- // Set the progress bar to be indeterminate.
- progressBar.setIndeterminate(true);
- }
-
- @Override
- protected SpannableStringBuilder[] doInBackground(String... formattedUrlString) {
- // Initialize the response body String.
- SpannableStringBuilder requestHeadersBuilder = new SpannableStringBuilder();
- SpannableStringBuilder responseMessageBuilder = new SpannableStringBuilder();
- SpannableStringBuilder responseHeadersBuilder = new SpannableStringBuilder();
- SpannableStringBuilder responseBodyBuilder = new SpannableStringBuilder();
-
- // Get a handle for the context and activity.
- Context context = contextWeakReference.get();
- Activity activity = activityWeakReference.get();
-
- // Abort if the activity is gone.
- if ((activity == null) || activity.isFinishing()) {
- return new SpannableStringBuilder[] {requestHeadersBuilder, responseMessageBuilder, responseHeadersBuilder, responseBodyBuilder};
- }
-
- // Because everything relating to requesting data from a webserver can throw errors, the entire section must catch `IOExceptions`.
- try {
- // Get the current URL from the main activity.
- URL url = new URL(formattedUrlString[0]);
-
- // Instantiate the proxy helper.
- ProxyHelper proxyHelper = new ProxyHelper();
-
- // Get the current proxy.
- Proxy proxy = proxyHelper.getCurrentProxy(context);
-
- // Open a connection to the URL. No data is actually sent at this point.
- HttpURLConnection httpUrlConnection = (HttpURLConnection) url.openConnection(proxy);
-
- // Define the variables necessary to build the request headers.
- requestHeadersBuilder = new SpannableStringBuilder();
- int oldRequestHeadersBuilderLength;
- int newRequestHeadersBuilderLength;
-
-
- // Set the `Host` header property.
- httpUrlConnection.setRequestProperty("Host", url.getHost());
-
- // Add the `Host` header to the string builder and format the text.
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Host", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Host");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": ");
- requestHeadersBuilder.append(url.getHost());
-
-
- // Set the `Connection` header property.
- httpUrlConnection.setRequestProperty("Connection", "keep-alive");
-
- // Add the `Connection` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Connection", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Connection");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": keep-alive");
-
-
- // Set the `Upgrade-Insecure-Requests` header property.
- httpUrlConnection.setRequestProperty("Upgrade-Insecure-Requests", "1");
-
- // Add the `Upgrade-Insecure-Requests` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Upgrade-Insecure-Requests", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Upgrade-Insecure_Requests");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": 1");
-
-
- // Set the `User-Agent` header property.
- httpUrlConnection.setRequestProperty("User-Agent", userAgent);
-
- // Add the `User-Agent` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("User-Agent", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("User-Agent");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": ");
- requestHeadersBuilder.append(userAgent);
-
-
- // Set the `x-requested-with` header property.
- httpUrlConnection.setRequestProperty("x-requested-with", "");
-
- // Add the `x-requested-with` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("x-requested-with", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("x-requested-with");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": ");
-
-
- // Set the `Sec-Fetch-Site` header property.
- httpUrlConnection.setRequestProperty("Sec-Fetch-Site", "none");
-
- // Add the `Sec-Fetch-Site` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Sec-Fetch-Site", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Sec-Fetch-Site");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": none");
-
-
- // Set the `Sec-Fetch-Mode` header property.
- httpUrlConnection.setRequestProperty("Sec-Fetch-Mode", "navigate");
-
- // Add the `Sec-Fetch-Mode` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Sec-Fetch-Mode", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Sec-Fetch-Mode");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": navigate");
-
-
- // Set the `Sec-Fetch-User` header property.
- httpUrlConnection.setRequestProperty("Sec-Fetch-User", "?1");
-
- // Add the `Sec-Fetch-User` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Sec-Fetch-User", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Sec-Fetch-User");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": ?1");
-
-
- // Get a handle for the shared preferences.
- SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity.getApplicationContext());
-
- // Only populate `Do Not Track` if it is enabled.
- if (sharedPreferences.getBoolean("do_not_track", false)) {
- // Set the `dnt` header property.
- httpUrlConnection.setRequestProperty("dnt", "1");
-
- // Add the `dnt` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("dnt", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("dnt");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": 1");
- }
-
-
- // Set the `Accept` header property.
- httpUrlConnection.setRequestProperty("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3");
-
- // Add the `Accept` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Accept", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Accept");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": ");
- requestHeadersBuilder.append("text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3");
-
-
- // Instantiate a locale string.
- String localeString;
-
- // Populate the locale string.
- if (Build.VERSION.SDK_INT >= 24) { // SDK >= 24 has a list of locales.
- // Get the list of locales.
- LocaleList localeList = activity.getResources().getConfiguration().getLocales();
-
- // Initialize a string builder to extract the locales from the list.
- StringBuilder localesStringBuilder = new StringBuilder();
-
- // Initialize a `q` value, which is used by `WebView` to indicate the order of importance of the languages.
- int q = 10;
-
- // Populate the string builder with the contents of the locales list.
- for (int i = 0; i < localeList.size(); i++) {
- // Append a comma if there is already an item in the string builder.
- if (i > 0) {
- localesStringBuilder.append(",");
- }
-
- // Get the locale from the list.
- Locale locale = localeList.get(i);
-
- // Add the locale to the string. `locale` by default displays as `en_US`, but WebView uses the `en-US` format.
- localesStringBuilder.append(locale.getLanguage());
- localesStringBuilder.append("-");
- localesStringBuilder.append(locale.getCountry());
-
- // 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.getLanguage());
-
- // 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--;
- }
- }
-
- // Store the populated string builder in the locale string.
- localeString = localesStringBuilder.toString();
- } else { // SDK < 24 only has a primary locale.
- // Store the locale in the locale string.
- localeString = Locale.getDefault().toString();
- }
-
- // Set the `Accept-Language` header property.
- httpUrlConnection.setRequestProperty("Accept-Language", localeString);
-
- // Add the `Accept-Language` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Accept-Language", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Accept-Language");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": ");
- requestHeadersBuilder.append(localeString);
-
-
- // Get the cookies for the current domain.
- String cookiesString = CookieManager.getInstance().getCookie(url.toString());
-
- // Only process the cookies if they are not null.
- if (cookiesString != null) {
- // Add the cookies to the header property.
- httpUrlConnection.setRequestProperty("Cookie", cookiesString);
-
- // Add the cookie header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Cookie", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Cookie");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": ");
- requestHeadersBuilder.append(cookiesString);
- }
-
-
- // `HttpUrlConnection` sets `Accept-Encoding` to be `gzip` by default. If the property is manually set, than `HttpUrlConnection` does not process the decoding.
- // Add the `Accept-Encoding` header to the string builder and format the text.
- requestHeadersBuilder.append(System.getProperty("line.separator"));
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- requestHeadersBuilder.append("Accept-Encoding", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- oldRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.append("Accept-Encoding");
- newRequestHeadersBuilderLength = requestHeadersBuilder.length();
- requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- requestHeadersBuilder.append(": gzip");
-
-
- // The actual network request is in a `try` bracket so that `disconnect()` is run in the `finally` section even if an error is encountered in the main block.
- try {
- // Initialize the string builders.
- responseMessageBuilder = new SpannableStringBuilder();
- responseHeadersBuilder = new SpannableStringBuilder();
-
- // Get the response code, which causes the connection to the server to be made.
- int responseCode = httpUrlConnection.getResponseCode();
-
- // Populate the response message string builder.
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- responseMessageBuilder.append(String.valueOf(responseCode), new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- responseMessageBuilder.append(String.valueOf(responseCode));
- int newLength = responseMessageBuilder.length();
- responseMessageBuilder.setSpan(new StyleSpan(Typeface.BOLD), 0, newLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- responseMessageBuilder.append(": ");
- responseMessageBuilder.append(httpUrlConnection.getResponseMessage());
-
- // Initialize the iteration variable.
- int i = 0;
-
- // Iterate through the received header fields.
- while (httpUrlConnection.getHeaderField(i) != null) {
- // Add a new line if there is already information in the string builder.
- if (i > 0) {
- responseHeadersBuilder.append(System.getProperty("line.separator"));
- }
-
- // Add the header to the string builder and format the text.
- if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart.
- responseHeadersBuilder.append(httpUrlConnection.getHeaderFieldKey(i), new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- } else { // Older versions not so much.
- int oldLength = responseHeadersBuilder.length();
- responseHeadersBuilder.append(httpUrlConnection.getHeaderFieldKey(i));
- int newLength = responseHeadersBuilder.length();
- responseHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldLength, newLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- responseHeadersBuilder.append(": ");
- responseHeadersBuilder.append(httpUrlConnection.getHeaderField(i));
-
- // Increment the iteration variable.
- i++;
- }
-
- // Instantiate an input stream for the response body.
- InputStream inputStream;
-
- // Get the correct input stream based on the response code.
- if (responseCode == 404) { // Get the error stream.
- inputStream = new BufferedInputStream(httpUrlConnection.getErrorStream());
- } else { // Get the response body stream.
- inputStream = new BufferedInputStream(httpUrlConnection.getInputStream());
- }
-
- // Initialize the byte array output stream and the conversion buffer byte array.
- ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
- byte[] conversionBufferByteArray = new byte[1024];
-
- // Define the buffer length variable.
- int bufferLength;
-
- try {
- // Attempt to read data from the input stream and store it in the conversion buffer byte array. Also store the amount of data read in the buffer length variable.
- while ((bufferLength = inputStream.read(conversionBufferByteArray)) > 0) { // Proceed while the amount of data stored in the buffer is > 0.
- // Write the contents of the conversion buffer to the byte array output stream.
- byteArrayOutputStream.write(conversionBufferByteArray, 0, bufferLength);
- }
- } catch (IOException exception) {
- // Do nothing.
- }
-
- // Close the input stream.
- inputStream.close();
-
- // Populate the response body string with the contents of the byte array output stream.
- responseBodyBuilder.append(byteArrayOutputStream.toString());
- } finally {
- // Disconnect HTTP URL connection.
- httpUrlConnection.disconnect();
- }
- } catch (Exception exception) {
- // Do nothing.
- }
-
- // Return the response body string as the result.
- return new SpannableStringBuilder[] {requestHeadersBuilder, responseMessageBuilder, responseHeadersBuilder, responseBodyBuilder};
- }
-
- // `onPostExecute()` operates on the UI thread.
- @Override
- protected void onPostExecute(SpannableStringBuilder[] viewSourceStringArray){
- // Get a handle for the activity.
- Activity activity = activityWeakReference.get();
-
- // Abort if the activity is gone.
- if ((activity == null) || activity.isFinishing()) {
- return;
- }
-
- // Get handles for the text views.
- TextView requestHeadersTextView = activity.findViewById(R.id.request_headers);
- TextView responseMessageTextView = activity.findViewById(R.id.response_message);
- TextView responseHeadersTextView = activity.findViewById(R.id.response_headers);
- TextView responseBodyTextView = activity.findViewById(R.id.response_body);
- ProgressBar progressBar = activity.findViewById(R.id.progress_bar);
- SwipeRefreshLayout swipeRefreshLayout = activity.findViewById(R.id.view_source_swiperefreshlayout);
-
- // Populate the text views. This can take a long time, and freeze the user interface, if the response body is particularly large.
- requestHeadersTextView.setText(viewSourceStringArray[0]);
- responseMessageTextView.setText(viewSourceStringArray[1]);
- responseHeadersTextView.setText(viewSourceStringArray[2]);
- responseBodyTextView.setText(viewSourceStringArray[3]);
-
- // Hide the progress bar.
- progressBar.setIndeterminate(false);
- progressBar.setVisibility(View.GONE);
-
- //Stop the swipe to refresh indicator if it is running
- swipeRefreshLayout.setRefreshing(false);
- }
-}
\ No newline at end of file