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https://github.com/M66B/FairEmail.git
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Proof of concept: clean with Adguard filter files
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M66B
parent
d146b19359
commit
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3 changed files with 184 additions and 0 deletions
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@ -52,3 +52,4 @@ FairEmail uses parts or all of:
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* [Jayway JsonPath](https://github.com/json-path/JsonPath). Copyright 2011 the original author or authors. [Apache License 2.0](https://github.com/json-path/JsonPath/blob/master/LICENSE).
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* [tinylog 2](https://github.com/tinylog-org/tinylog). Copyright 2016-2023 Martin Winandy. [Apache License 2.0](https://github.com/tinylog-org/tinylog/blob/v2.7/license.txt).
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* [Brave Lists](https://github.com/brave/adblock-lists). [Mozilla Public License Version 2.0](https://github.com/brave/adblock-lists/blob/master/LICENSE).
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* [AG Filters Registry](https://github.com/AdguardTeam/FiltersRegistry). [GNU Lesser General Public License Version 3](https://github.com/AdguardTeam/FiltersRegistry/blob/master/LICENSE).
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@ -52,3 +52,4 @@ FairEmail uses parts or all of:
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* [Jayway JsonPath](https://github.com/json-path/JsonPath). Copyright 2011 the original author or authors. [Apache License 2.0](https://github.com/json-path/JsonPath/blob/master/LICENSE).
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* [tinylog 2](https://github.com/tinylog-org/tinylog). Copyright 2016-2023 Martin Winandy. [Apache License 2.0](https://github.com/tinylog-org/tinylog/blob/v2.7/license.txt).
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* [Brave Lists](https://github.com/brave/adblock-lists). [Mozilla Public License Version 2.0](https://github.com/brave/adblock-lists/blob/master/LICENSE).
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* [AG Filters Registry](https://github.com/AdguardTeam/FiltersRegistry). [GNU Lesser General Public License Version 3](https://github.com/AdguardTeam/FiltersRegistry/blob/master/LICENSE).
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@ -401,6 +401,14 @@ public class UriHelper {
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if (url.isOpaque() || !isHyperLink(url))
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return uri;
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if (BuildConfig.DEBUG) {
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Uri result = filterAdguard(context, url);
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if (result != null) {
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changed = true;
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url = result;
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}
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}
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Uri.Builder builder = url.buildUpon();
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builder.clearQuery();
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@ -445,6 +453,180 @@ public class UriHelper {
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return (changed ? builder.build() : null);
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}
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@Nullable
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private static Uri filterAdguard(Context context, Uri uri) {
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if (uri.isOpaque())
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return null;
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String host = uri.getHost();
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if (TextUtils.isEmpty(host))
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return null;
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List<String> removes = new ArrayList<>();
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// https://github.com/AdguardTeam/FiltersRegistry/blob/master/filters/filter_17_TrackParam/filter.txt
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try (BufferedReader br = new BufferedReader(
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new InputStreamReader(context.getAssets().open("adguard_filter.txt")))) {
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String line;
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while ((line = br.readLine()) != null) {
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if (TextUtils.isEmpty(line) || line.startsWith("!"))
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continue;
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int dollar = line.indexOf('$');
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while (dollar > 0 && line.charAt(dollar - 1) == '\\')
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dollar = line.indexOf('$', dollar + 1);
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if (dollar < 0)
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continue;
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String expr = line.substring(0, dollar).replace("\\$", "$");
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String rest = line.substring(dollar + 1);
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List<String> commands = new ArrayList<>();
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int start = 0;
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while (start < rest.length()) {
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int comma = rest.indexOf(',', start);
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while (comma > 0 && rest.charAt(comma - 1) == '\\')
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comma = rest.indexOf(',', comma + 1);
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int end = (comma < 0 ? rest.length() : comma);
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commands.add(rest.substring(start, end).replace("\\,", ","));
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start = (comma < 0 ? end : end + 1);
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}
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String remove = null;
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boolean matches = true;
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for (String command : commands) {
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int equal = command.indexOf('=');
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String c = (equal < 0 ? command : command.substring(0, equal));
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String e = (equal < 0 ? "" : command.substring(equal + 1));
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if ("removeparam".equals(c))
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remove = e;
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else if ("domain".equals(c)) {
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// https://adguard.com/kb/general/ad-filtering/create-own-filters/#domain-modifier
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matches = false;
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List<String> domains = new ArrayList<>();
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start = 0;
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while (start < c.length()) {
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int pipe = e.indexOf('|', start);
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while (pipe > 0 && e.charAt(pipe - 1) == '\\')
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pipe = e.indexOf('|', pipe + 1);
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int end = (pipe < 0 ? e.length() : pipe);
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domains.add(e.substring(start, end).replace("\\|", "|"));
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start = (pipe < 0 ? end : end + 1);
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}
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for (String domain : domains) {
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boolean not = domain.startsWith("~");
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String d = (not ? domain.substring(1) : domain);
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if (d.contains("*") && !d.endsWith("*"))
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Log.w("Adguard unexpected domain=" + domain);
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if (d.endsWith("*"))
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matches = d.substring(0, d.length() - 1).startsWith(host);
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else
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matches = d.equals(host);
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if (matches)
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Log.w("Adguard domain=" + domain + " host=" + host);
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if (not)
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matches = !matches;
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if (matches)
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break;
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}
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}
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}
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if (remove == null /* no removeparam */ || !matches)
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continue;
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boolean except = false;
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matches = TextUtils.isEmpty(expr);
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if (!matches) {
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if (expr.startsWith("@@")) {
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except = true;
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expr = expr.substring(2);
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}
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String u = uri.toString();
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if (expr.startsWith("||")) {
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int ss = u.indexOf("//");
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if (ss > 0)
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u = u.substring(ss + 2);
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expr = expr.substring(2);
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}
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// https://adguard.com/kb/general/ad-filtering/create-own-filters/#basic-rules-special-characters
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StringBuilder b = new StringBuilder();
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b.append(".*");
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for (char c : expr.toCharArray())
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if (c == '*')
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b.append(".*");
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else if (c == '^')
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b.append("[^0-9a-zA-Z\\_\\-\\.\\%]");
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else if (c == '|')
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Log.w("Adguard unexpected expr=" + expr);
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else {
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if ("\\.?![]{}()<>*+-=^$|".indexOf(c) >= 0)
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b.append("\\");
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b.append(c);
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}
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if (!expr.endsWith("*"))
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b.append(".*");
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matches = Pattern.compile(b.toString()).matcher(u).matches();
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if (matches)
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Log.w("Adguard expr=" + b + " remove=" + remove);
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}
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if (matches)
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if (except)
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removes.clear();
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else if (!removes.contains(remove))
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removes.add(remove);
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}
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} catch (Throwable ex) {
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Log.e(ex);
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}
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try {
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boolean changed = false;
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Uri.Builder builder = uri.buildUpon();
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builder.clearQuery();
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if (removes.contains("") /* all */)
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changed = true;
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else
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for (String key : uri.getQueryParameterNames()) {
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boolean omit = false;
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for (String remove : removes)
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if (remove.startsWith("/")) {
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int end = remove.indexOf('/', 1);
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if (end > 0) {
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String regex = remove.substring(1, end);
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String rest = remove.substring(end + 1);
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if (!TextUtils.isEmpty(rest))
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Log.w("Adguard unexpected remove=" + remove);
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if (Pattern.compile(regex).matcher(key).matches()) {
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omit = true;
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Log.w("Adguard omit regex=" + regex);
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break;
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}
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}
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} else if (remove.equals(key)) {
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omit = true;
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Log.w("Adguard omit key=" + key);
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break;
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}
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if (omit)
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changed = true;
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else
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for (String value : uri.getQueryParameters(key))
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builder.appendQueryParameter(key, value);
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}
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return (changed ? builder.build() : null);
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} catch (Throwable ex) {
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Log.e(ex);
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return null;
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}
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}
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@Nullable
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private static List<String> getBraveClean(Context context, Uri uri) {
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// https://github.com/brave/adblock-lists/blob/master/brave-lists/clean-urls.json
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