Workaround invalid percent encoding

app/src/main/java/eu/faircode/email/ActivityCompose.java

@@ -30,7 +30,6 @@ import android.text.Spanned;
 import android.text.TextUtils;
 
 import androidx.core.app.TaskStackBuilder;
-import androidx.core.net.MailTo;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
 import androidx.fragment.app.FragmentTransaction;

app/src/main/java/eu/faircode/email/DnsBlockList.java

@@ -24,7 +24,6 @@ import android.content.SharedPreferences;
 import android.net.Uri;
 import android.text.TextUtils;
 
-import androidx.core.net.MailTo;
 import androidx.preference.PreferenceManager;
 
 import java.net.Inet4Address;

app/src/main/java/eu/faircode/email/FragmentDialogOpenLink.java

@@ -58,7 +58,6 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 import androidx.constraintlayout.widget.Group;
-import androidx.core.net.MailTo;
 import androidx.core.util.PatternsCompat;
 import androidx.lifecycle.Lifecycle;
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;

app/src/main/java/eu/faircode/email/IPInfo.java

@@ -25,7 +25,6 @@ import android.net.Uri;
 import android.util.Pair;
 
 import androidx.annotation.NonNull;
-import androidx.core.net.MailTo;
 
 import java.io.FileNotFoundException;
 import java.io.IOException;

app/src/main/java/eu/faircode/email/MailTo.java

@@ -0,0 +1,88 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail 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.
+
+    FairEmail 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 FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2022 by Marcel Bokhorst (M66B)
+*/
+
+import android.net.Uri;
+
+import androidx.annotation.NonNull;
+import androidx.core.net.ParseException;
+
+import java.util.Map;
+
+public class MailTo {
+    private final androidx.core.net.MailTo instance;
+
+    // https://en.wikipedia.org/wiki/Mailto
+    private MailTo(androidx.core.net.MailTo instance) {
+        this.instance = instance;
+    }
+
+    @NonNull
+    public static MailTo parse(@NonNull String uri) throws ParseException {
+        // Workaround invalid percent encoding
+        // https://en.wikipedia.org/wiki/Percent-encoding
+        int i = 0;
+        int pos = uri.indexOf('%', i);
+        while (pos >= 0 && i + 3 < uri.length()) {
+            try {
+                if (pos + 3 > uri.length())
+                    break;
+                String hex = uri.substring(pos + 1, pos + 3);
+                int kar = Integer.parseInt(hex, 16);
+                if (kar > 127)
+                    throw new NumberFormatException("Non ASCII: %" + hex);
+            } catch (NumberFormatException ex) {
+                uri = uri.substring(0, pos + 1) + "25" + uri.substring(pos + 1);
+            } catch (Throwable ex) {
+                Log.e(ex);
+                break;
+            }
+            i = pos + 3;
+            pos = uri.indexOf('%', i);
+        }
+
+        return new MailTo(androidx.core.net.MailTo.parse(uri));
+    }
+
+    @NonNull
+    public static MailTo parse(@NonNull Uri uri) throws ParseException {
+        return parse(uri.toString());
+    }
+
+    String getTo() {
+        return instance.getTo();
+    }
+
+    String getCc() {
+        return instance.getCc();
+    }
+
+    String getSubject() {
+        return instance.getSubject();
+    }
+
+    Map<String, String> getHeaders() {
+        return instance.getHeaders();
+    }
+
+    String getBody() {
+        return instance.getBody();
+    }
+}

app/src/main/java/eu/faircode/email/MessageHelper.java

@@ -30,7 +30,6 @@ import android.text.TextUtils;
 import android.util.Base64;
 
 import androidx.annotation.NonNull;
-import androidx.core.net.MailTo;
 import androidx.core.util.PatternsCompat;
 import androidx.documentfile.provider.DocumentFile;
 import androidx.preference.PreferenceManager;