feat: remove tracking params from URLs

mastodon/src/main/java/org/joinmastodon/android/GlobalUserPreferences.java

@@ -80,6 +80,7 @@ public class GlobalUserPreferences{
 	public static boolean mentionRebloggerAutomatically;
 	public static boolean showPostsWithoutAlt;
 	public static boolean showMediaPreview;
+	public static boolean removeTrackingParams;
 
 	public static SharedPreferences getPrefs(){
 		return MastodonApp.context.getSharedPreferences("global", Context.MODE_PRIVATE);
@@ -160,6 +161,7 @@ public class GlobalUserPreferences{
 		mentionRebloggerAutomatically=prefs.getBoolean("mentionRebloggerAutomatically", false);
 		showPostsWithoutAlt=prefs.getBoolean("showPostsWithoutAlt", true);
 		showMediaPreview=prefs.getBoolean("showMediaPreview", true);
+		removeTrackingParams=prefs.getBoolean("removeTrackingParams", true);
 
 		theme=ThemePreference.values()[prefs.getInt("theme", 0)];
 
@@ -234,6 +236,7 @@ public class GlobalUserPreferences{
 				.putBoolean("enableDeleteNotifications", enableDeleteNotifications)
 				.putBoolean("showPostsWithoutAlt", showPostsWithoutAlt)
 				.putBoolean("showMediaPreview", showMediaPreview)
+				.putBoolean("removeTrackingParams", removeTrackingParams)
 
 				.apply();
 	}

mastodon/src/main/java/org/joinmastodon/android/ui/utils/UiUtils.java

@@ -125,6 +125,7 @@ import org.joinmastodon.android.ui.sheets.BlockAccountConfirmationSheet;
 import org.joinmastodon.android.ui.sheets.MuteAccountConfirmationSheet;
 import org.joinmastodon.android.ui.text.CustomEmojiSpan;
 import org.joinmastodon.android.ui.text.HtmlParser;
+import org.joinmastodon.android.utils.Tracking;
 import org.parceler.Parcels;
 
 import java.io.File;
@@ -196,6 +197,8 @@ public class UiUtils {
 	}
 
 	public static void launchWebBrowser(Context context, String url) {
+		if(GlobalUserPreferences.removeTrackingParams)
+			url=Tracking.removeTrackingParameters(url);
 		try {
 			if (GlobalUserPreferences.useCustomTabs) {
 				new CustomTabsIntent.Builder()
@@ -1480,6 +1483,8 @@ public class UiUtils {
 	}
 
 	public static void copyText(View v, String text) {
+		if(GlobalUserPreferences.removeTrackingParams)
+			text=Tracking.cleanUrlsInText(text);
 		Context context = v.getContext();
 		context.getSystemService(ClipboardManager.class).setPrimaryClip(ClipData.newPlainText(null, text));
 		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU || UiUtils.isMIUI()) { // Android 13+ SystemUI shows its own thing when you put things into the clipboard

mastodon/src/main/java/org/joinmastodon/android/utils/Tracking.java

@@ -0,0 +1,89 @@
+package org.joinmastodon.android.utils;
+
+import android.net.Uri;
+import android.util.Log;
+import android.util.Patterns;
+
+import androidx.annotation.NonNull;
+import java.util.Arrays;
+import java.util.regex.Matcher;
+
+// Inspired by https://github.com/GeopJr/Tuba/blob/91a036edff9ab1ffb38d5b54a33023e5db551051/src/Utils/Tracking.vala
+
+public class Tracking{
+	/* https://github.com/brave/brave-core/blob/face8d58ab81422480c8c05b9ba5d518e1a2d227/components/query_filter/utils.cc#L23-L119 */
+	private static final String[] TRACKING_IDS = {
+			// Strip any utm_ based ones
+			"utm_",
+			// https://github.com/brave/brave-browser/issues/4239
+			"fbclid", "gclid", "msclkid", "mc_eid",
+			// New Facebook one
+			"mibexid",
+			// https://github.com/brave/brave-browser/issues/9879
+			"dclid",
+			// https://github.com/brave/brave-browser/issues/13644
+			"oly_anon_id", "oly_enc_id",
+			// https://github.com/brave/brave-browser/issues/11579
+			"_openstat",
+			// https://github.com/brave/brave-browser/issues/11817
+			"vero_conv", "vero_id",
+			// https://github.com/brave/brave-browser/issues/13647
+			"wickedid",
+			// https://github.com/brave/brave-browser/issues/11578
+			"yclid",
+			// https://github.com/brave/brave-browser/issues/8975
+			"__s",
+			// https://github.com/brave/brave-browser/issues/17451
+			"rb_clickid",
+			// https://github.com/brave/brave-browser/issues/17452
+			"s_cid",
+			// https://github.com/brave/brave-browser/issues/17507
+			"ml_subscriber", "ml_subscriber_hash",
+			// https://github.com/brave/brave-browser/issues/18020
+			"twclid",
+			// https://github.com/brave/brave-browser/issues/18758
+			"gbraid", "wbraid",
+			// https://github.com/brave/brave-browser/issues/9019
+			"_hsenc", "__hssc", "__hstc", "__hsfp", "hsCtaTracking",
+			// https://github.com/brave/brave-browser/issues/22082
+			"oft_id", "oft_k", "oft_lk", "oft_d", "oft_c", "oft_ck", "oft_ids", "oft_sk",
+			// https://github.com/brave/brave-browser/issues/11580
+			"igshid",
+			// Instagram Threads
+			"ad_id", "adset_id", "campaign_id", "ad_name", "adset_name", "campaign_name", "placement",
+			// Reddit
+			"share_id", "ref", "ref_share",
+	};
+
+	/**
+	 * Tries to remove tracking parameters from a URL.
+	 *
+	 * @param url The original URL with tracking parameters
+	 * @return The URL with the tracking parameters removed.
+	 */
+	@NonNull
+	public static String removeTrackingParameters(@NonNull String url) {
+		Uri uri = Uri.parse(url);
+		Uri.Builder uriBuilder = uri.buildUpon().clearQuery();
+
+		// Iterate over existing parameters and add them back if they are not tracking parameters
+		for (String paramName : uri.getQueryParameterNames()) {
+			if (!isTrackingParameter(paramName)) {
+				for (String paramValue : uri.getQueryParameters(paramName)) {
+					uriBuilder.appendQueryParameter(paramName, paramValue);
+				}
+			} else {
+				Log.e("Tacking", "removeTrackingParameters: removing: " + paramName);
+			}
+		}
+
+		return uriBuilder.build().toString();
+	}
+
+	/**
+	 * Returns true if the given parameter is used for tracking.
+	 */
+	private static boolean isTrackingParameter(String parameter) {
+		return Arrays.stream(TRACKING_IDS).anyMatch(trackingId -> parameter.toLowerCase().contains(trackingId));
+	}
+}