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https://github.com/oxen-io/session-android.git
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Update URL homograph rules.
This commit is contained in:
Greyson Parrelli
parent
ab2e85f6c7
commit
5b534c8b1a
@ -1,99 +0,0 @@
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package org.thoughtcrime.securesms.linkpreview;
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import java.util.regex.Pattern;
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public class LegalUrlPatterns {
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public static final Pattern LATIN = Pattern.compile("[" +
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"\\x{0041}-\\x{005A}" +
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"\\x{0061}-\\x{007A}" +
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"\\x{00AA}" +
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"\\x{00BA}" +
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"\\x{00C0}-\\x{00DC}" +
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"\\x{00D8}-\\x{00F6}" +
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"\\x{00F8}-\\x{01BA}" +
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"]");
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public static final Pattern CYRILLIC = Pattern.compile("[" +
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"\\x{0400}-\\x{0481}" +
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"\\x{0482}" +
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"\\x{0483}-\\x{0484}" +
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"\\x{0487}" +
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"\\x{0488}-\\x{0489}" +
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"\\x{048A}-\\x{052F}" +
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"\\x{1C80}-\\x{1C88}" +
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"\\x{1D2B}" +
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"\\x{1D78}" +
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"\\x{2DE0}-\\x{2DFF}" +
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"\\x{A640}-\\x{A66D}" +
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"\\x{A66E}" +
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"\\x{A66F}" +
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"\\x{A670}-\\x{A672}" +
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"\\x{A673}" +
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"\\x{A674}-\\x{A67D}" +
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"\\x{A67E}" +
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"\\x{A67F}" +
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"\\x{A680}-\\x{A69B}" +
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"\\x{A69C}-\\x{A69D}" +
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"\\x{A69E}-\\x{A69F}" +
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"\\x{FE2E}-\\x{FE2F}" +
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"]");
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public static final Pattern GREEK = Pattern.compile("[" +
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"\\x{0370}-\\x{0373}" +
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"\\x{0375}" +
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"\\x{0376}-\\x{0377}" +
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"\\x{037A}" +
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"\\x{037B}-\\x{037D}" +
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"\\x{037F}" +
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"\\x{0384}" +
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"\\x{0386}" +
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"\\x{0388}-\\x{038A}" +
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"\\x{038C}" +
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"\\x{038E}-\\x{03A1}" +
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"\\x{03A3}-\\x{03E1}" +
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"\\x{03F0}-\\x{03F5}" +
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"\\x{03F6}" +
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"\\x{03F7}-\\x{03FF}" +
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"\\x{1D26}-\\x{1D2A}" +
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"\\x{1D5D}-\\x{1D61}" +
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"\\x{1D66}-\\x{1D6A}" +
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"\\x{1DBF}" +
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"\\x{1F00}-\\x{1F15}" +
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"\\x{1F18}-\\x{1F1D}" +
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"\\x{1F20}-\\x{1F45}" +
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"\\x{1F48}-\\x{1F4D}" +
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"\\x{1F50}-\\x{1F57}" +
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"\\x{1F59}" +
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"\\x{1F5B}" +
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"\\x{1F5D}" +
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"\\x{1F5F}-\\x{1F7D}" +
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"\\x{1F80}-\\x{1FB4}" +
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"\\x{1FB6}-\\x{1FBC}" +
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"\\x{1FBD}" +
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"\\x{1FBE}" +
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"\\x{1FBF}-\\x{1FC1}" +
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"\\x{1FC2}-\\x{1FC4}" +
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"\\x{1FC6}-\\x{1FCC}" +
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"\\x{1FCD}-\\x{1FCF}" +
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"\\x{1FD0}-\\x{1FD3}" +
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"\\x{1FD6}-\\x{1FDB}" +
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"\\x{1FDD}-\\x{1FDF}" +
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"\\x{1FE0}-\\x{1FEC}" +
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"\\x{1FED}-\\x{1FEF}" +
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"\\x{1FF2}-\\x{1FF4}" +
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"\\x{1FF6}-\\x{1FFC}" +
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"\\x{1FFD}-\\x{1FFE}" +
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"\\x{2126}" +
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"\\x{AB65}" +
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"\\x{10140}-\\x{10174}"+
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"\\x{10175}-\\x{10178}"+
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"\\x{10179}-\\x{10189}"+
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"\\x{1018A}-\\x{1018B}"+
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"\\x{1018C}-\\x{1018E}"+
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"\\x{101A0}"+
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"\\x{1D200}-\\x{1D241}"+
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"\\x{1D242}-\\x{1D244}"+
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"\\x{1D245}"+
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"]");
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}
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@ -10,11 +10,17 @@ import com.annimon.stream.Stream;
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import java.util.Collections;
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import java.util.List;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import okhttp3.HttpUrl;
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public final class LinkPreviewUtil {
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private static final Pattern DOMAIN_PATTERN = Pattern.compile("^(https?://)?([^/]+).*$");
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private static final Pattern ALL_ASCII_PATTERN = Pattern.compile("^[\\x00-\\x7F]*$");
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private static final Pattern ALL_NON_ASCII_PATTERN = Pattern.compile("^[^\\x00-\\x7F]*$");
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/**
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* @return All whitelisted URLs in the source text.
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*/
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@ -57,10 +63,16 @@ public final class LinkPreviewUtil {
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}
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public static boolean isLegalUrl(@NonNull String url) {
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if (LegalUrlPatterns.LATIN.matcher(url).find()) {
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return !LegalUrlPatterns.CYRILLIC.matcher(url).find() &&
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!LegalUrlPatterns.GREEK.matcher(url).find();
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Matcher matcher = DOMAIN_PATTERN.matcher(url);
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if (matcher.matches()) {
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String domain = matcher.group(2);
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String cleanedDomain = domain.replaceAll("\\.", "");
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return ALL_ASCII_PATTERN.matcher(cleanedDomain).matches() ||
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ALL_NON_ASCII_PATTERN.matcher(cleanedDomain).matches();
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} else {
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return false;
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}
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return true;
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}
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}
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@ -8,17 +8,62 @@ import static junit.framework.TestCase.assertTrue;
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public class LinkPreviewUtilTest {
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@Test
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public void isLegal_allLatin() {
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assertTrue(LinkPreviewUtil.isLegalUrl("https://signal.org"));
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public void isLegal_allAscii_noProtocol() {
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assertTrue(LinkPreviewUtil.isLegalUrl("google.com"));
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}
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@Test
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public void isLegal_latinAndCyrillic() {
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assertFalse(LinkPreviewUtil.isLegalUrl("https://www.аmazon.com"));
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public void isLegal_allAscii_noProtocol_subdomain() {
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assertTrue(LinkPreviewUtil.isLegalUrl("foo.google.com"));
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}
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@Test
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public void isLegal_latinAndGreek() {
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assertFalse(LinkPreviewUtil.isLegalUrl("https://www.αpple.com"));
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public void isLegal_allAscii_subdomain() {
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assertTrue(LinkPreviewUtil.isLegalUrl("https://foo.google.com"));
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}
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@Test
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public void isLegal_allAscii_subdomain_path() {
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assertTrue(LinkPreviewUtil.isLegalUrl("https://foo.google.com/some/path.html"));
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}
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@Test
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public void isLegal_cyrillicHostAsciiTld() {
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assertFalse(LinkPreviewUtil.isLegalUrl("http://кц.com"));
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}
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@Test
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public void isLegal_cyrillicHostAsciiTld_noProtocol() {
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assertFalse(LinkPreviewUtil.isLegalUrl("кц.com"));
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}
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@Test
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public void isLegal_mixedHost_noProtocol() {
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assertFalse(LinkPreviewUtil.isLegalUrl("http://asĸ.com"));
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}
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@Test
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public void isLegal_cyrillicHostAndTld_noProtocol() {
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assertTrue(LinkPreviewUtil.isLegalUrl("кц.рф"));
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}
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@Test
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public void isLegal_cyrillicHostAndTld_asciiPath_noProtocol() {
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assertTrue(LinkPreviewUtil.isLegalUrl("кц.рф/some/path"));
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}
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@Test
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public void isLegal_cyrillicHostAndTld_asciiPath() {
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assertTrue(LinkPreviewUtil.isLegalUrl("https://кц.рф/some/path"));
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}
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@Test
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public void isLegal_asciiSubdomain_cyrillicHostAndTld() {
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assertFalse(LinkPreviewUtil.isLegalUrl("http://foo.кц.рф"));
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}
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@Test
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public void isLegal_emptyUrl() {
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assertFalse(LinkPreviewUtil.isLegalUrl(""));
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}
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}
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