WhatsApp blocking Telegram links

LinkifyWeb.java

package com.whatsapp.util;

import android.text.Spannable;
import android.text.style.URLSpan;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class LinkifyWeb {
    private static final Pattern[] BAD_HOSTS;
    public static final Pattern DOMAIN_NAME;
    private static final String GOOD_GTLD_CHAR = "a-zA-Z\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef";
    private static final String GOOD_IRI_CHAR = "a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef";
    private static final String GTLD = "[a-zA-Z\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef]{2,63}";
    private static final String HOST_NAME = "(?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef](?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\\-]{0,61}[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef]){0,1}\\.)+([a-zA-Z\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef]{2,63})";
    private static final String HOST_NAME_STRICT = "((?:(?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef][a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\\-]{0,64}\\.)+(?:(?:aero|arpa|asia|a[cdefgilmnoqrstuwxz])|(?:biz|b[abdefghijmnorstvwyz])|(?:cat|com|coop|c[acdfghiklmnoruvxyz])|d[ejkmoz]|(?:edu|e[cegrstu])|f[ijkmor]|(?:gov|g[abdefghilmnpqrstuwy])|h[kmnrtu]|(?:info|int|i[delmnoqrst])|(?:jobs|j[emop])|k[eghimnprwyz]|l[abcikrstuvy]|(?:mil|mobi|museum|m[acdeghklmnopqrstuvwxyz])|(?:name|net|n[acefgilopruz])|(?:org|om)|(?:pro|p[aefghklmnrstwy])|qa|r[eosuw]|s[abcdeghijklmnortuvyz]|(?:tel|travel|t[cdfghjklmnoprtvwz])|u[agksyz]|v[aceginu]|w[fs]|(?:\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae|\u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u0435|\u0440\u0444|\u0441\u0440\u0431|\u05d8\u05e2\u05e1\u05d8|\u0622\u0632\u0645\u0627\u06cc\u0634\u06cc|\u0625\u062e\u062a\u0628\u0627\u0631|\u0627\u0644\u0627\u0631\u062f\u0646|\u0627\u0644\u062c\u0632\u0627\u0626\u0631|\u0627\u0644\u0633\u0639\u0648\u062f\u064a\u0629|\u0627\u0644\u0645\u063a\u0631\u0628|\u0627\u0645\u0627\u0631\u0627\u062a|\u0628\u06be\u0627\u0631\u062a|\u062a\u0648\u0646\u0633|\u0633\u0648\u0631\u064a\u0629|\u0641\u0644\u0633\u0637\u064a\u0646|\u0642\u0637\u0631|\u0645\u0635\u0631|\u092a\u0930\u0940\u0915\u094d\u0937\u093e|\u092d\u093e\u0930\u0924|\u09ad\u09be\u09b0\u09a4|\u0a2d\u0a3e\u0a30\u0a24|\u0aad\u0abe\u0ab0\u0aa4|\u0b87\u0ba8\u0bcd\u0ba4\u0bbf\u0baf\u0bbe|\u0b87\u0bb2\u0b99\u0bcd\u0b95\u0bc8|\u0b9a\u0bbf\u0b99\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0bc2\u0bb0\u0bcd|\u0baa\u0bb0\u0bbf\u0b9f\u0bcd\u0b9a\u0bc8|\u0c2d\u0c3e\u0c30\u0c24\u0c4d|\u0dbd\u0d82\u0d9a\u0dcf|\u0e44\u0e17\u0e22|\u30c6\u30b9\u30c8|\u4e2d\u56fd|\u4e2d\u570b|\u53f0\u6e7e|\u53f0\u7063|\u65b0\u52a0\u5761|\u6d4b\u8bd5|\u6e2c\u8a66|\u9999\u6e2f|\ud14c\uc2a4\ud2b8|\ud55c\uad6d|xn\\-\\-0zwm56d|xn\\-\\-11b5bs3a9aj6g|xn\\-\\-3e0b707e|xn\\-\\-45brj9c|xn\\-\\-80akhbyknj4f|xn\\-\\-90a3ac|xn\\-\\-9t4b11yi5a|xn\\-\\-clchc0ea0b2g2a9gcd|xn\\-\\-deba0ad|xn\\-\\-fiqs8s|xn\\-\\-fiqz9s|xn\\-\\-fpcrj9c3d|xn\\-\\-fzc2c9e2c|xn\\-\\-g6w251d|xn\\-\\-gecrj9c|xn\\-\\-h2brj9c|xn\\-\\-hgbk6aj7f53bba|xn\\-\\-hlcj6aya9esc7a|xn\\-\\-j6w193g|xn\\-\\-jxalpdlp|xn\\-\\-kgbechtv|xn\\-\\-kprw13d|xn\\-\\-kpry57d|xn\\-\\-lgbbat1ad8j|xn\\-\\-mgbaam7a8h|xn\\-\\-mgbayh7gpa|xn\\-\\-mgbbh1a71e|xn\\-\\-mgbc0a9azcg|xn\\-\\-mgberp4a5d4ar|xn\\-\\-o3cw4h|xn\\-\\-ogbpf8fl|xn\\-\\-p1ai|xn\\-\\-pgbs0dh|xn\\-\\-s9brj9c|xn\\-\\-wgbh1c|xn\\-\\-wgbl6a|xn\\-\\-xkc2al3hye2a|xn\\-\\-xkc2dl3a5ee0h|xn\\-\\-yfro4i67o|xn\\-\\-ygbi2ammx|xn\\-\\-zckzah|xxx)|y[et]|z[amw])))";
    private static final Pattern IP_ADDRESS;
    private static final String IRI = "[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef](?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\\-]{0,61}[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef]){0,1}";
    public static final String TOP_LEVEL_DOMAIN_STR_FOR_WEB_URL = "(?:(?:aero|arpa|asia|a[cdefgilmnoqrstuwxz])|(?:biz|b[abdefghijmnorstvwyz])|(?:cat|com|coop|c[acdfghiklmnoruvxyz])|d[ejkmoz]|(?:edu|e[cegrstu])|f[ijkmor]|(?:gov|g[abdefghilmnpqrstuwy])|h[kmnrtu]|(?:info|int|i[delmnoqrst])|(?:jobs|j[emop])|k[eghimnprwyz]|l[abcikrstuvy]|(?:mil|mobi|museum|m[acdeghklmnopqrstuvwxyz])|(?:name|net|n[acefgilopruz])|(?:org|om)|(?:pro|p[aefghklmnrstwy])|qa|r[eosuw]|s[abcdeghijklmnortuvyz]|(?:tel|travel|t[cdfghjklmnoprtvwz])|u[agksyz]|v[aceginu]|w[fs]|(?:\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae|\u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u0435|\u0440\u0444|\u0441\u0440\u0431|\u05d8\u05e2\u05e1\u05d8|\u0622\u0632\u0645\u0627\u06cc\u0634\u06cc|\u0625\u062e\u062a\u0628\u0627\u0631|\u0627\u0644\u0627\u0631\u062f\u0646|\u0627\u0644\u062c\u0632\u0627\u0626\u0631|\u0627\u0644\u0633\u0639\u0648\u062f\u064a\u0629|\u0627\u0644\u0645\u063a\u0631\u0628|\u0627\u0645\u0627\u0631\u0627\u062a|\u0628\u06be\u0627\u0631\u062a|\u062a\u0648\u0646\u0633|\u0633\u0648\u0631\u064a\u0629|\u0641\u0644\u0633\u0637\u064a\u0646|\u0642\u0637\u0631|\u0645\u0635\u0631|\u092a\u0930\u0940\u0915\u094d\u0937\u093e|\u092d\u093e\u0930\u0924|\u09ad\u09be\u09b0\u09a4|\u0a2d\u0a3e\u0a30\u0a24|\u0aad\u0abe\u0ab0\u0aa4|\u0b87\u0ba8\u0bcd\u0ba4\u0bbf\u0baf\u0bbe|\u0b87\u0bb2\u0b99\u0bcd\u0b95\u0bc8|\u0b9a\u0bbf\u0b99\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0bc2\u0bb0\u0bcd|\u0baa\u0bb0\u0bbf\u0b9f\u0bcd\u0b9a\u0bc8|\u0c2d\u0c3e\u0c30\u0c24\u0c4d|\u0dbd\u0d82\u0d9a\u0dcf|\u0e44\u0e17\u0e22|\u30c6\u30b9\u30c8|\u4e2d\u56fd|\u4e2d\u570b|\u53f0\u6e7e|\u53f0\u7063|\u65b0\u52a0\u5761|\u6d4b\u8bd5|\u6e2c\u8a66|\u9999\u6e2f|\ud14c\uc2a4\ud2b8|\ud55c\uad6d|xn\\-\\-0zwm56d|xn\\-\\-11b5bs3a9aj6g|xn\\-\\-3e0b707e|xn\\-\\-45brj9c|xn\\-\\-80akhbyknj4f|xn\\-\\-90a3ac|xn\\-\\-9t4b11yi5a|xn\\-\\-clchc0ea0b2g2a9gcd|xn\\-\\-deba0ad|xn\\-\\-fiqs8s|xn\\-\\-fiqz9s|xn\\-\\-fpcrj9c3d|xn\\-\\-fzc2c9e2c|xn\\-\\-g6w251d|xn\\-\\-gecrj9c|xn\\-\\-h2brj9c|xn\\-\\-hgbk6aj7f53bba|xn\\-\\-hlcj6aya9esc7a|xn\\-\\-j6w193g|xn\\-\\-jxalpdlp|xn\\-\\-kgbechtv|xn\\-\\-kprw13d|xn\\-\\-kpry57d|xn\\-\\-lgbbat1ad8j|xn\\-\\-mgbaam7a8h|xn\\-\\-mgbayh7gpa|xn\\-\\-mgbbh1a71e|xn\\-\\-mgbc0a9azcg|xn\\-\\-mgberp4a5d4ar|xn\\-\\-o3cw4h|xn\\-\\-ogbpf8fl|xn\\-\\-p1ai|xn\\-\\-pgbs0dh|xn\\-\\-s9brj9c|xn\\-\\-wgbh1c|xn\\-\\-wgbl6a|xn\\-\\-xkc2al3hye2a|xn\\-\\-xkc2dl3a5ee0h|xn\\-\\-yfro4i67o|xn\\-\\-ygbi2ammx|xn\\-\\-zckzah|xxx)|y[et]|z[amw]))";
    public static final Pattern WEB_URL;
    private static final String[] WEB_URL_SCHEMES;
    public static final Pattern WEB_URL_STRICT;

    static {
        IP_ADDRESS = Pattern.compile("(((25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9])\\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[0-9]))|([0-9a-fA-F]{0,4}\u00ad:){2,7}(\u00ad:|[0-9a-fA-F]{1,4}))");
        DOMAIN_NAME = Pattern.compile("((?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef](?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\\-]{0,61}[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef]){0,1}\\.)+([a-zA-Z\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef]{2,63})|" + IP_ADDRESS + ")");
        WEB_URL = Pattern.compile("((?:(http|https|Http|Https|rtsp|Rtsp):\\/\\/(?:(?:[a-zA-Z0-9\\$\\-\\_\\.\\+\\!\\*\\'\\(\\)\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,64}(?:\\:(?:[a-zA-Z0-9\\$\\-\\_\\.\\+\\!\\*\\'\\(\\)\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,25})?\\@)?)?(?:(?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef](?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\\-]{0,61}[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef]){0,1}\\.)+([a-zA-Z\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef]{2,63}))(?:\\:\\d{1,5})?)(\\/(?:(?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\\;\\/\\?\\:\\@\\&\\=\\#\\~\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])|(?:\\%[a-fA-F0-9]{2}))*)?(?:\\b|$)");
        WEB_URL_STRICT = Pattern.compile("^((?:(http|https|Http|Https|rtsp|Rtsp):\\/\\/(?:(?:[a-zA-Z0-9\\$\\-\\_\\.\\+\\!\\*\\'\\(\\)\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,64}(?:\\:(?:[a-zA-Z0-9\\$\\-\\_\\.\\+\\!\\*\\'\\(\\)\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,25})?\\@)?)?((?:(?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef][a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\\-]{0,64}\\.)+(?:(?:aero|arpa|asia|a[cdefgilmnoqrstuwxz])|(?:biz|b[abdefghijmnorstvwyz])|(?:cat|com|coop|c[acdfghiklmnoruvxyz])|d[ejkmoz]|(?:edu|e[cegrstu])|f[ijkmor]|(?:gov|g[abdefghilmnpqrstuwy])|h[kmnrtu]|(?:info|int|i[delmnoqrst])|(?:jobs|j[emop])|k[eghimnprwyz]|l[abcikrstuvy]|(?:mil|mobi|museum|m[acdeghklmnopqrstuvwxyz])|(?:name|net|n[acefgilopruz])|(?:org|om)|(?:pro|p[aefghklmnrstwy])|qa|r[eosuw]|s[abcdeghijklmnortuvyz]|(?:tel|travel|t[cdfghjklmnoprtvwz])|u[agksyz]|v[aceginu]|w[fs]|(?:\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae|\u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u0435|\u0440\u0444|\u0441\u0440\u0431|\u05d8\u05e2\u05e1\u05d8|\u0622\u0632\u0645\u0627\u06cc\u0634\u06cc|\u0625\u062e\u062a\u0628\u0627\u0631|\u0627\u0644\u0627\u0631\u062f\u0646|\u0627\u0644\u062c\u0632\u0627\u0626\u0631|\u0627\u0644\u0633\u0639\u0648\u062f\u064a\u0629|\u0627\u0644\u0645\u063a\u0631\u0628|\u0627\u0645\u0627\u0631\u0627\u062a|\u0628\u06be\u0627\u0631\u062a|\u062a\u0648\u0646\u0633|\u0633\u0648\u0631\u064a\u0629|\u0641\u0644\u0633\u0637\u064a\u0646|\u0642\u0637\u0631|\u0645\u0635\u0631|\u092a\u0930\u0940\u0915\u094d\u0937\u093e|\u092d\u093e\u0930\u0924|\u09ad\u09be\u09b0\u09a4|\u0a2d\u0a3e\u0a30\u0a24|\u0aad\u0abe\u0ab0\u0aa4|\u0b87\u0ba8\u0bcd\u0ba4\u0bbf\u0baf\u0bbe|\u0b87\u0bb2\u0b99\u0bcd\u0b95\u0bc8|\u0b9a\u0bbf\u0b99\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0bc2\u0bb0\u0bcd|\u0baa\u0bb0\u0bbf\u0b9f\u0bcd\u0b9a\u0bc8|\u0c2d\u0c3e\u0c30\u0c24\u0c4d|\u0dbd\u0d82\u0d9a\u0dcf|\u0e44\u0e17\u0e22|\u30c6\u30b9\u30c8|\u4e2d\u56fd|\u4e2d\u570b|\u53f0\u6e7e|\u53f0\u7063|\u65b0\u52a0\u5761|\u6d4b\u8bd5|\u6e2c\u8a66|\u9999\u6e2f|\ud14c\uc2a4\ud2b8|\ud55c\uad6d|xn\\-\\-0zwm56d|xn\\-\\-11b5bs3a9aj6g|xn\\-\\-3e0b707e|xn\\-\\-45brj9c|xn\\-\\-80akhbyknj4f|xn\\-\\-90a3ac|xn\\-\\-9t4b11yi5a|xn\\-\\-clchc0ea0b2g2a9gcd|xn\\-\\-deba0ad|xn\\-\\-fiqs8s|xn\\-\\-fiqz9s|xn\\-\\-fpcrj9c3d|xn\\-\\-fzc2c9e2c|xn\\-\\-g6w251d|xn\\-\\-gecrj9c|xn\\-\\-h2brj9c|xn\\-\\-hgbk6aj7f53bba|xn\\-\\-hlcj6aya9esc7a|xn\\-\\-j6w193g|xn\\-\\-jxalpdlp|xn\\-\\-kgbechtv|xn\\-\\-kprw13d|xn\\-\\-kpry57d|xn\\-\\-lgbbat1ad8j|xn\\-\\-mgbaam7a8h|xn\\-\\-mgbayh7gpa|xn\\-\\-mgbbh1a71e|xn\\-\\-mgbc0a9azcg|xn\\-\\-mgberp4a5d4ar|xn\\-\\-o3cw4h|xn\\-\\-ogbpf8fl|xn\\-\\-p1ai|xn\\-\\-pgbs0dh|xn\\-\\-s9brj9c|xn\\-\\-wgbh1c|xn\\-\\-wgbl6a|xn\\-\\-xkc2al3hye2a|xn\\-\\-xkc2dl3a5ee0h|xn\\-\\-yfro4i67o|xn\\-\\-ygbi2ammx|xn\\-\\-zckzah|xxx)|y[et]|z[amw])))(?:\\:\\d{1,5})?)(\\/(?:(?:[a-zA-Z0-9\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\\;\\/\\?\\:\\@\\&\\=\\#\\~\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])|(?:\\%[a-fA-F0-9]{2}))*)?(?:\\b|$)");
        WEB_URL_SCHEMES = new String[]{"http://", "https://", "rtsp://"};
        BAD_HOSTS = new Pattern[]{Pattern.compile("(\\W|\\b)telegram(\\.\\w+){1,2}\\z", 2)};
    }

    public static boolean addLinks(Spannable text) {
        Matcher m = WEB_URL.matcher(text);
        boolean linkAdded = false;
        while (m.find()) {
            int start = m.start();
            int end = m.end();
            if ((start == 0 || text.charAt(start - 1) != '@') && isGoodUrl(m.group(0))) {
                if (text.length() > end && text.charAt(end) == '/') {
                    end++;
                }
                applyLink(makeUrl(m.group(0), WEB_URL_SCHEMES), start, end, text);
                linkAdded = true;
            }
        }
        return linkAdded;
    }

    public static boolean hasBadHosts(CharSequence text) {
        Matcher m = WEB_URL.matcher(text);
        while (m.find()) {
            int start = m.start();
            if ((start == 0 || text.charAt(start - 1) != '@') && isBadHost(m.group(0))) {
                return true;
            }
        }
        return false;
    }

    public static String getLinkMatch(String text) {
        Matcher m = WEB_URL.matcher(text);
        String noSchemeUrl = null;
        while (m.find()) {
            int start = m.start();
            if (start == 0 || text.charAt(start - 1) != '@') {
                String url = m.group(0);
                if (isGoodUrl(url)) {
                    for (int i = 0; i < WEB_URL_SCHEMES.length; i++) {
                        if (url.regionMatches(true, 0, WEB_URL_SCHEMES[i], 0, WEB_URL_SCHEMES[i].length())) {
                            return url;
                        }
                    }
                    noSchemeUrl = url;
                } else {
                    continue;
                }
            }
        }
        return noSchemeUrl;
    }

    public static String getLink(String text) {
        String match = getLinkMatch(text);
        return match != null ? makeUrl(match) : null;
    }

    public static final String makeUrl(String url) {
        return makeUrl(url, WEB_URL_SCHEMES);
    }

    private static final String makeUrl(String url, String[] prefixes) {
        boolean hasPrefix = false;
        for (int i = 0; i < prefixes.length; i++) {
            if (url.regionMatches(true, 0, prefixes[i], 0, prefixes[i].length())) {
                hasPrefix = true;
                if (!url.regionMatches(false, 0, prefixes[i], 0, prefixes[i].length())) {
                    url = prefixes[i] + url.substring(prefixes[i].length());
                }
                if (hasPrefix) {
                    return prefixes[0] + url;
                }
                return url;
            }
        }
        if (hasPrefix) {
            return url;
        }
        return prefixes[0] + url;
    }

    private static final void applyLink(String url, int start, int end, Spannable text) {
        text.setSpan(new URLSpan(url), start, end, 33);
    }

    public static boolean isGoodUrlStart(String url) {
        return url.startsWith("http://") || url.startsWith("https://") || url.startsWith("Http://") || url.startsWith("Https://") || url.startsWith("www.") || url.startsWith("Www.");
    }

    public static boolean isBadHost(String urlStr) {
        if (urlStr == null) {
            return true;
        }
        try {
            String host = new URL(makeUrl(urlStr)).getHost().toLowerCase();
            for (Pattern badHost : BAD_HOSTS) {
                if (badHost.matcher(host).find()) {
                    return true;
                }
            }
            return false;
        } catch (MalformedURLException e) {
            return true;
        }
    }

    public static boolean isGoodUrl(String url) {
        if (isBadHost(url)) {
            return false;
        }
        if (isGoodUrlStart(url)) {
            return true;
        }
        if (WEB_URL_STRICT.matcher(url).find()) {
            return true;
        }
        return false;
    }
}

(www.cdn.whatsapp.net/android/2.12.370/WhatsApp.apk)[WhatsApp APK] 2.12.370 decompiled with (https://github.com/skylot/jadx/)[jadx]