X-Git-Url: https://gitweb.stoutner.com/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fbackgroundtasks%2FGetSourceBackgroundTask.kt;fp=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fbackgroundtasks%2FGetSourceBackgroundTask.kt;h=0000000000000000000000000000000000000000;hb=a54a66c7d169d2edf55ba560ec2d951e709188e6;hp=f7ad0a5b8556e000d072fa6715fc6386b42f7eb0;hpb=4395165965c4a211f7c03583ebca6edaa5bf19fe;p=PrivacyBrowserAndroid.git diff --git a/app/src/main/java/com/stoutner/privacybrowser/backgroundtasks/GetSourceBackgroundTask.kt b/app/src/main/java/com/stoutner/privacybrowser/backgroundtasks/GetSourceBackgroundTask.kt deleted file mode 100644 index f7ad0a5b..00000000 --- a/app/src/main/java/com/stoutner/privacybrowser/backgroundtasks/GetSourceBackgroundTask.kt +++ /dev/null @@ -1,336 +0,0 @@ -/* - * Copyright © 2017-2023 Soren Stoutner . - * - * This file is part of 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 . - */ - -package com.stoutner.privacybrowser.backgroundtasks - -import android.annotation.SuppressLint -import android.content.ContentResolver -import android.graphics.Typeface -import android.net.Uri -import android.text.SpannableStringBuilder -import android.text.Spanned -import android.text.style.StyleSpan -import android.webkit.CookieManager - -import com.stoutner.privacybrowser.viewmodels.WebViewSource - -import java.io.BufferedInputStream -import java.io.BufferedReader -import java.io.ByteArrayOutputStream -import java.io.IOException -import java.io.InputStream -import java.io.InputStreamReader - -import java.net.HttpURLConnection -import java.net.Proxy -import java.net.URL - -import java.security.SecureRandom -import java.security.cert.X509Certificate - -import javax.net.ssl.HostnameVerifier -import javax.net.ssl.HttpsURLConnection -import javax.net.ssl.SSLContext -import javax.net.ssl.SSLSession -import javax.net.ssl.TrustManager -import javax.net.ssl.X509TrustManager - - -class GetSourceBackgroundTask { - fun acquire(urlString: String, userAgent: String, localeString: String, proxy: Proxy, contentResolver: ContentResolver, webViewSource: WebViewSource, ignoreSslErrors: Boolean): - Array { - - // Initialize the spannable string builders. - val requestHeadersBuilder = SpannableStringBuilder() - val responseMessageBuilder = SpannableStringBuilder() - val responseHeadersBuilder = SpannableStringBuilder() - val responseBodyBuilder = SpannableStringBuilder() - - if (urlString.startsWith("content://")) { // This is a content URL. - // Attempt to read the content data. Return an error if this fails. - try { - // Get a URI for the content URL. - val contentUri = Uri.parse(urlString) - - // Get a cursor with metadata about the content URL. - val contentCursor = contentResolver.query(contentUri, null, null, null, null)!! - - // Move the content cursor to the first row. - contentCursor.moveToFirst() - - // Populate the response header. - for (i in 0 until contentCursor.columnCount) { - // Add a new line if this is not the first entry. - if (i > 0) - responseHeadersBuilder.append(System.getProperty("line.separator")) - - // Add each header to the string builder. - responseHeadersBuilder.append(contentCursor.getColumnName(i), StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE) - responseHeadersBuilder.append(": ") - responseHeadersBuilder.append(contentCursor.getString(i)) - } - - // Close the content cursor. - contentCursor.close() - - // Create a buffered string reader for the content data. - val bufferedReader = BufferedReader(InputStreamReader(contentResolver.openInputStream(contentUri))) - - // Create a buffered string reader for the content data. - var contentLineString: String? - - // Get the data from the buffered reader one line at a time. - while (bufferedReader.readLine().also { contentLineString = it } != null) { - // Add the line to the response body builder. - responseBodyBuilder.append(contentLineString) - - // Append a new line. - responseBodyBuilder.append("\n") - } - } catch (exception: Exception) { - // Return the error message. - webViewSource.returnError(exception.toString()) - } - } else { // This is not a content URL. - // 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. - val url = URL(urlString) - - // Open a connection to the URL. No data is actually sent at this point. - val httpUrlConnection = url.openConnection(proxy) as HttpURLConnection - - // Set the `Host` header property. - httpUrlConnection.setRequestProperty("Host", url.host) - - // Add the `Host` header to the string builder and format the text. - requestHeadersBuilder.append("Host", StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE) - requestHeadersBuilder.append(": ") - requestHeadersBuilder.append(url.host) - - - // 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")) - requestHeadersBuilder.append("Connection", StyleSpan(Typeface.BOLD), 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")) - requestHeadersBuilder.append("Upgrade-Insecure-Requests", StyleSpan(Typeface.BOLD), 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")) - requestHeadersBuilder.append("User-Agent", StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE) - requestHeadersBuilder.append(": ") - requestHeadersBuilder.append(userAgent) - - - // 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")) - requestHeadersBuilder.append("Sec-Fetch-Site", StyleSpan(Typeface.BOLD), 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")) - requestHeadersBuilder.append("Sec-Fetch-Mode", StyleSpan(Typeface.BOLD), 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")) - requestHeadersBuilder.append("Sec-Fetch-User", StyleSpan(Typeface.BOLD), 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")) - requestHeadersBuilder.append("Accept", StyleSpan(Typeface.BOLD), 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") - - - // 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")) - requestHeadersBuilder.append("Accept-Language", StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE) - requestHeadersBuilder.append(": ") - requestHeadersBuilder.append(localeString) - - - // Get the cookies for the current domain. - val 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")) - requestHeadersBuilder.append("Cookie", StyleSpan(Typeface.BOLD), 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")) - requestHeadersBuilder.append("Accept-Encoding", StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE) - requestHeadersBuilder.append(": gzip") - - // Ignore SSL errors if requested. - if (ignoreSslErrors) { - // Create a new host name verifier that allows all host names without checking for SSL errors. - val hostnameVerifier = HostnameVerifier { _: String?, _: SSLSession? -> true } - - // Create a new trust manager. Lint wants to warn us that it is hard to securely implement an X509 trust manager. - // But the point of this trust manager is that it should accept all certificates no matter what, so that isn't an issue in our case. - @SuppressLint("CustomX509TrustManager") val trustManager = arrayOf( - object : X509TrustManager { - @SuppressLint("TrustAllX509TrustManager") - override fun checkClientTrusted(chain: Array, authType: String) { - // Do nothing, which trusts all client certificates. - } - - @SuppressLint("TrustAllX509TrustManager") - override fun checkServerTrusted(chain: Array, authType: String) { - // Do nothing, which trusts all server certificates. - } - - override fun getAcceptedIssuers(): Array? { - return null - } - } - ) - - // Get an SSL context. `TLS` provides a base instance available from API 1. - val sslContext = SSLContext.getInstance("TLS") - - // Initialize the SSL context with the blank trust manager. - sslContext.init(null, trustManager, SecureRandom()) - - // Get the SSL socket factory with the blank trust manager. - val socketFactory = sslContext.socketFactory - - // Set the HTTPS URL Connection to use the blank host name verifier. - (httpUrlConnection as HttpsURLConnection).hostnameVerifier = hostnameVerifier - - // Set the HTTPS URL connection to use the socket factory with the blank trust manager. - httpUrlConnection.sslSocketFactory = socketFactory - } - - // 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 { - // Get the response code, which causes the connection to the server to be made. - val responseCode = httpUrlConnection.responseCode - - // Populate the response message string builder. - responseMessageBuilder.append(responseCode.toString(), StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE) - responseMessageBuilder.append(": ") - responseMessageBuilder.append(httpUrlConnection.responseMessage) - - // Initialize the iteration variable. - var 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. - responseHeadersBuilder.append(httpUrlConnection.getHeaderFieldKey(i), StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE) - responseHeadersBuilder.append(": ") - responseHeadersBuilder.append(httpUrlConnection.getHeaderField(i)) - - // Increment the iteration variable. - i++ - } - - // Get the correct input stream based on the response code. - val inputStream: InputStream = if (responseCode == 404) // Get the error stream. - BufferedInputStream(httpUrlConnection.errorStream) - else // Get the response body stream. - BufferedInputStream(httpUrlConnection.inputStream) - - // Initialize the byte array output stream and the conversion buffer byte array. - val byteArrayOutputStream = ByteArrayOutputStream() - val conversionBufferByteArray = ByteArray(1024) - - // Define the buffer length variable. - var bufferLength: Int - - 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 (inputStream.read(conversionBufferByteArray).also { bufferLength = it } > 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 (exception: IOException) { - // Return the error message. - webViewSource.returnError(exception.toString()) - } - - // 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) { - // Return the error message. - webViewSource.returnError(exception.toString()) - } - } - - // Return the spannable string builders. - return arrayOf(requestHeadersBuilder, responseMessageBuilder, responseHeadersBuilder, responseBodyBuilder) - } -} \ No newline at end of file