app/src/main/java/com/stoutner/privacybrowser/adapters/PinnedMismatchPagerAdapter.kt

   1 /*
   2  * Copyright © 2021-2022 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Browser Android <https://www.stoutner.com/privacy-browser-android>.
   5  *
   6  * Privacy Browser Android is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Privacy Browser Android is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Privacy Browser Android.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package com.stoutner.privacybrowser.adapters
  21
  22 import android.content.Context
  23 import android.net.Uri
  24 import android.text.SpannableStringBuilder
  25 import android.text.Spanned
  26 import android.text.style.ForegroundColorSpan
  27 import android.view.LayoutInflater
  28 import android.view.View
  29 import android.view.ViewGroup
  30 import android.widget.TextView
  31
  32 import androidx.viewpager.widget.PagerAdapter
  33
  34 import com.stoutner.privacybrowser.R
  35 import com.stoutner.privacybrowser.activities.MainWebViewActivity
  36 import com.stoutner.privacybrowser.views.NestedScrollWebView
  37
  38 import java.text.DateFormat
  39 import java.util.Date
  40
  41 // This adapter uses a PagerAdapter instead of a FragmentPagerAdapter because dialogs fragments really don't like having a nested FragmentPagerAdapter inside of them.
  42 class PinnedMismatchPagerAdapter(private val context: Context, private val layoutInflater: LayoutInflater, private val webViewFragmentId: Long) : PagerAdapter() {
  43     override fun isViewFromObject(view: View, `object`: Any): Boolean {
  44         // Check to see if the view and the object are the same.
  45         return view === `object`
  46     }
  47
  48     // Get the number of tabs.
  49     override fun getCount(): Int {
  50         // There are two tabs.
  51         return 2
  52     }
  53
  54     // Get the name of each tab.  Tab numbers start at 0.
  55     override fun getPageTitle(tabNumber: Int): CharSequence {
  56         return when (tabNumber) {
  57             0 -> context.getString(R.string.current)
  58             1 -> context.getString(R.string.pinned)
  59             else -> ""
  60         }
  61     }
  62
  63     // Setup each tab.
  64     override fun instantiateItem(container: ViewGroup, tabNumber: Int): Any {
  65         // Get the current position of this WebView fragment.
  66         val webViewPosition = MainWebViewActivity.webViewPagerAdapter.getPositionForId(webViewFragmentId)
  67
  68         // Get the WebView tab fragment.
  69         val webViewTabFragment = MainWebViewActivity.webViewPagerAdapter.getPageFragment(webViewPosition)
  70
  71         // Get the WebView fragment view.
  72         val webViewFragmentView = webViewTabFragment.requireView()
  73
  74         // Get a handle for the current WebView.
  75         val nestedScrollWebView = webViewFragmentView.findViewById<NestedScrollWebView>(R.id.nestedscroll_webview)!!
  76
  77         // Inflate the scroll view for this tab.
  78         val tabLayout = layoutInflater.inflate(R.layout.pinned_mismatch_tab_linearlayout, container, false) as ViewGroup
  79
  80         // Get handles for the views.
  81         val domainNameTextView = tabLayout.findViewById<TextView>(R.id.domain_name)
  82         val ipAddressesTextView = tabLayout.findViewById<TextView>(R.id.ip_addresses)
  83         val issuedToCNameTextView = tabLayout.findViewById<TextView>(R.id.issued_to_cname)
  84         val issuedToONameTextView = tabLayout.findViewById<TextView>(R.id.issued_to_oname)
  85         val issuedToUNameTextView = tabLayout.findViewById<TextView>(R.id.issued_to_uname)
  86         val issuedByCNameTextView = tabLayout.findViewById<TextView>(R.id.issued_by_cname)
  87         val issuedByONameTextView = tabLayout.findViewById<TextView>(R.id.issued_by_oname)
  88         val issuedByUNameTextView = tabLayout.findViewById<TextView>(R.id.issued_by_uname)
  89         val startDateTextView = tabLayout.findViewById<TextView>(R.id.start_date)
  90         val endDateTextView = tabLayout.findViewById<TextView>(R.id.end_date)
  91
  92         // Setup the labels.
  93         val domainNameLabel = context.getString(R.string.domain_label) + "  "
  94         val ipAddressesLabel = context.getString(R.string.ip_addresses) + "  "
  95         val cNameLabel = context.getString(R.string.common_name) + "  "
  96         val oNameLabel = context.getString(R.string.organization) + "  "
  97         val uNameLabel = context.getString(R.string.organizational_unit) + "  "
  98         val startDateLabel = context.getString(R.string.start_date) + "  "
  99         val endDateLabel = context.getString(R.string.end_date) + "  "
 100
 101         // Convert the URL to a URI.
 102         val currentUri = Uri.parse(nestedScrollWebView.url)
 103
 104         // Get the current host from the URI.
 105         val domainName = currentUri.host
 106
 107         // Get the current website SSL certificate.
 108         val sslCertificate = nestedScrollWebView.certificate
 109
 110         // Initialize the SSL certificate variables.
 111         var currentSslIssuedToCName = ""
 112         var currentSslIssuedToOName = ""
 113         var currentSslIssuedToUName = ""
 114         var currentSslIssuedByCName = ""
 115         var currentSslIssuedByOName = ""
 116         var currentSslIssuedByUName = ""
 117         var currentSslStartDate: Date? = null
 118         var currentSslEndDate: Date? = null
 119
 120         // Extract the individual pieces of information from the current website SSL certificate if it is not null.
 121         if (sslCertificate != null) {
 122             currentSslIssuedToCName = sslCertificate.issuedTo.cName
 123             currentSslIssuedToOName = sslCertificate.issuedTo.oName
 124             currentSslIssuedToUName = sslCertificate.issuedTo.uName
 125             currentSslIssuedByCName = sslCertificate.issuedBy.cName
 126             currentSslIssuedByOName = sslCertificate.issuedBy.oName
 127             currentSslIssuedByUName = sslCertificate.issuedBy.uName
 128             currentSslStartDate = sslCertificate.validNotBeforeDate
 129             currentSslEndDate = sslCertificate.validNotAfterDate
 130         }
 131
 132         // Get the pinned SSL certificate pair.
 133         val pinnedSslCertificatePair = nestedScrollWebView.getPinnedSslCertificate()
 134
 135         // Extract the arrays from the array list.
 136         val pinnedSslCertificateStringArray = pinnedSslCertificatePair.first
 137         val pinnedSslCertificateDateArray = pinnedSslCertificatePair.second
 138
 139         // Setup the domain name spannable string builder.
 140         val domainNameStringBuilder = SpannableStringBuilder(domainNameLabel + domainName)
 141
 142         // Initialize the spannable string builders.
 143         val ipAddressesStringBuilder: SpannableStringBuilder
 144         val issuedToCNameStringBuilder: SpannableStringBuilder
 145         val issuedToONameStringBuilder: SpannableStringBuilder
 146         val issuedToUNameStringBuilder: SpannableStringBuilder
 147         val issuedByCNameStringBuilder: SpannableStringBuilder
 148         val issuedByONameStringBuilder: SpannableStringBuilder
 149         val issuedByUNameStringBuilder: SpannableStringBuilder
 150         val startDateStringBuilder: SpannableStringBuilder
 151         val endDateStringBuilder: SpannableStringBuilder
 152
 153         // Setup the spannable string builders for each tab.
 154         if (tabNumber == 0) {  // Setup the current settings tab.
 155             // Create the string builders.
 156             ipAddressesStringBuilder = SpannableStringBuilder(ipAddressesLabel + nestedScrollWebView.currentIpAddresses)
 157             issuedToCNameStringBuilder = SpannableStringBuilder(cNameLabel + currentSslIssuedToCName)
 158             issuedToONameStringBuilder = SpannableStringBuilder(oNameLabel + currentSslIssuedToOName)
 159             issuedToUNameStringBuilder = SpannableStringBuilder(uNameLabel + currentSslIssuedToUName)
 160             issuedByCNameStringBuilder = SpannableStringBuilder(cNameLabel + currentSslIssuedByCName)
 161             issuedByONameStringBuilder = SpannableStringBuilder(oNameLabel + currentSslIssuedByOName)
 162             issuedByUNameStringBuilder = SpannableStringBuilder(uNameLabel + currentSslIssuedByUName)
 163
 164             // Set the dates if they aren't null.  Formatting a null date causes a crash.
 165             startDateStringBuilder = if (currentSslStartDate == null) {
 166                 SpannableStringBuilder(startDateLabel)
 167             } else {
 168                 SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(currentSslStartDate))
 169             }
 170
 171             endDateStringBuilder = if (currentSslEndDate == null) {
 172                 SpannableStringBuilder(endDateLabel)
 173             } else {
 174                 SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(currentSslEndDate))
 175             }
 176         } else {  // Setup the pinned settings tab.
 177             // Create the string builders.
 178             ipAddressesStringBuilder = SpannableStringBuilder(ipAddressesLabel + nestedScrollWebView.pinnedIpAddresses)
 179             issuedToCNameStringBuilder = SpannableStringBuilder(cNameLabel + pinnedSslCertificateStringArray[0])
 180             issuedToONameStringBuilder = SpannableStringBuilder(oNameLabel + pinnedSslCertificateStringArray[1])
 181             issuedToUNameStringBuilder = SpannableStringBuilder(uNameLabel + pinnedSslCertificateStringArray[2])
 182             issuedByCNameStringBuilder = SpannableStringBuilder(cNameLabel + pinnedSslCertificateStringArray[3])
 183             issuedByONameStringBuilder = SpannableStringBuilder(oNameLabel + pinnedSslCertificateStringArray[4])
 184             issuedByUNameStringBuilder = SpannableStringBuilder(uNameLabel + pinnedSslCertificateStringArray[5])
 185             startDateStringBuilder = SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(pinnedSslCertificateDateArray[0]))
 186             endDateStringBuilder = SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(pinnedSslCertificateDateArray[1]))
 187         }
 188
 189         // Create the color spans.
 190         val blueColorSpan = ForegroundColorSpan(context.getColor(R.color.blue_text))
 191         val redColorSpan = ForegroundColorSpan(context.getColor(R.color.red_text))
 192
 193         // Set the domain name to be blue.
 194         domainNameStringBuilder.setSpan(blueColorSpan, domainNameLabel.length, domainNameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 195
 196         // Color coordinate the IP addresses if they are pinned.
 197         if (nestedScrollWebView.pinnedIpAddresses != "") {
 198             if (nestedScrollWebView.currentIpAddresses == nestedScrollWebView.pinnedIpAddresses) {
 199                 ipAddressesStringBuilder.setSpan(blueColorSpan, ipAddressesLabel.length, ipAddressesStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 200             } else {
 201                 ipAddressesStringBuilder.setSpan(redColorSpan, ipAddressesLabel.length, ipAddressesStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 202             }
 203         }
 204
 205         // Color coordinate the SSL certificate fields if they are pinned.
 206         if (nestedScrollWebView.hasPinnedSslCertificate()) {
 207             if (currentSslIssuedToCName == pinnedSslCertificateStringArray[0]) {
 208                 issuedToCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length, issuedToCNameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 209             } else {
 210                 issuedToCNameStringBuilder.setSpan(redColorSpan, cNameLabel.length, issuedToCNameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 211             }
 212
 213             if (currentSslIssuedToOName == pinnedSslCertificateStringArray[1]) {
 214                 issuedToONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length, issuedToONameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 215             } else {
 216                 issuedToONameStringBuilder.setSpan(redColorSpan, oNameLabel.length, issuedToONameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 217             }
 218
 219             if (currentSslIssuedToUName == pinnedSslCertificateStringArray[2]) {
 220                 issuedToUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length, issuedToUNameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 221             } else {
 222                 issuedToUNameStringBuilder.setSpan(redColorSpan, uNameLabel.length, issuedToUNameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 223             }
 224
 225             if (currentSslIssuedByCName == pinnedSslCertificateStringArray[3]) {
 226                 issuedByCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length, issuedByCNameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 227             } else {
 228                 issuedByCNameStringBuilder.setSpan(redColorSpan, cNameLabel.length, issuedByCNameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 229             }
 230
 231             if (currentSslIssuedByOName == pinnedSslCertificateStringArray[4]) {
 232                 issuedByONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length, issuedByONameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 233             } else {
 234                 issuedByONameStringBuilder.setSpan(redColorSpan, oNameLabel.length, issuedByONameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 235             }
 236
 237             if (currentSslIssuedByUName == pinnedSslCertificateStringArray[5]) {
 238                 issuedByUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length, issuedByUNameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 239             } else {
 240                 issuedByUNameStringBuilder.setSpan(redColorSpan, uNameLabel.length, issuedByUNameStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 241             }
 242
 243             if (currentSslStartDate != null && currentSslStartDate == pinnedSslCertificateDateArray[0]) {
 244                 startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length, startDateStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 245             } else {
 246                 startDateStringBuilder.setSpan(redColorSpan, startDateLabel.length, startDateStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 247             }
 248
 249             if (currentSslEndDate != null && currentSslEndDate == pinnedSslCertificateDateArray[1]) {
 250                 endDateStringBuilder.setSpan(blueColorSpan, endDateLabel.length, endDateStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 251             } else {
 252                 endDateStringBuilder.setSpan(redColorSpan, endDateLabel.length, endDateStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 253             }
 254         }
 255
 256         // Display the strings.
 257         domainNameTextView.text = domainNameStringBuilder
 258         ipAddressesTextView.text = ipAddressesStringBuilder
 259         issuedToCNameTextView.text = issuedToCNameStringBuilder
 260         issuedToONameTextView.text = issuedToONameStringBuilder
 261         issuedToUNameTextView.text = issuedToUNameStringBuilder
 262         issuedByCNameTextView.text = issuedByCNameStringBuilder
 263         issuedByONameTextView.text = issuedByONameStringBuilder
 264         issuedByUNameTextView.text = issuedByUNameStringBuilder
 265         startDateTextView.text = startDateStringBuilder
 266         endDateTextView.text = endDateStringBuilder
 267
 268         // Add the tab layout to the container.  This needs to be manually done for pager adapters.
 269         container.addView(tabLayout)
 270
 271         // Return the tab layout.
 272         return tabLayout
 273     }
 274 }