From 22a7e47ba6baea9020a63464a0a605dc53377a42 Mon Sep 17 00:00:00 2001 From: Luca Foppiano Date: Wed, 3 Jun 2026 00:20:01 +0100 Subject: [PATCH 1/4] fix: wrap the exceptions of host validation and rethrow MalformedUrlException --- src/java/org/apache/nutch/util/URLUtil.java | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/src/java/org/apache/nutch/util/URLUtil.java b/src/java/org/apache/nutch/util/URLUtil.java index fd036480a6..f6f208c58e 100644 --- a/src/java/org/apache/nutch/util/URLUtil.java +++ b/src/java/org/apache/nutch/util/URLUtil.java @@ -24,6 +24,7 @@ import java.util.Locale; import java.util.regex.Pattern; +import com.ibm.icu.util.ICUException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; @@ -675,11 +676,21 @@ public static String convertIDNA2008(String host, boolean toAscii) throws MalformedURLException { final IDNA.Info idnaInfo = new IDNA.Info(); final StringBuilder hostConverted = new StringBuilder(); + try { if (toAscii) { idna.nameToASCII(host, hostConverted, idnaInfo); } else { idna.nameToUnicode(host, hostConverted, idnaInfo); } + } catch (ICUException | IndexOutOfBoundsException e) { + // ICUInputTooLongException (from Punycode.encode on an over-long label) and + // other hard ICU failures are unchecked; convert to MalformedURLException so + // callers (e.g. BasicURLNormalizer) reject the URL instead of crashing the task. + LOG.debug("Failed to convert IDN host {}: ", host, e); + throw (MalformedURLException) new MalformedURLException( + "Invalid IDN host " + host + ": " + e.getMessage()).initCause(e); + } + if (idnaInfo.hasErrors()) { StringBuilder msg = new StringBuilder(); for (IDNA.Error error : idnaInfo.getErrors()) { From db5cfae4e0cd97c107a7e6e8c11a91f78c681fc6 Mon Sep 17 00:00:00 2001 From: Luca Foppiano Date: Wed, 3 Jun 2026 10:06:44 +0100 Subject: [PATCH 2/4] fix: cover more exceptions --- src/java/org/apache/nutch/util/URLUtil.java | 28 +++++++++++---------- 1 file changed, 15 insertions(+), 13 deletions(-) diff --git a/src/java/org/apache/nutch/util/URLUtil.java b/src/java/org/apache/nutch/util/URLUtil.java index f6f208c58e..c921041ca3 100644 --- a/src/java/org/apache/nutch/util/URLUtil.java +++ b/src/java/org/apache/nutch/util/URLUtil.java @@ -676,20 +676,22 @@ public static String convertIDNA2008(String host, boolean toAscii) throws MalformedURLException { final IDNA.Info idnaInfo = new IDNA.Info(); final StringBuilder hostConverted = new StringBuilder(); - try { - if (toAscii) { - idna.nameToASCII(host, hostConverted, idnaInfo); - } else { - idna.nameToUnicode(host, hostConverted, idnaInfo); + try { + if (toAscii) { + idna.nameToASCII(host, hostConverted, idnaInfo); + } else { + idna.nameToUnicode(host, hostConverted, idnaInfo); + } + } catch (ICUException | IllegalArgumentException | IllegalStateException e) { + // ICU's UTS46 + Punycode conversion throws these unchecked exceptions: + // ICUException (incl. ICUInputTooLongException from Punycode.encode on an + // over-long label), IllegalArgumentException (UTS46), IllegalStateException + // (Punycode). Convert to MalformedURLException so callers (e.g. + // BasicURLNormalizer) reject the URL instead of crashing the task. + LOG.debug("Failed to convert IDN host {}: ", host, e); + throw (MalformedURLException) new MalformedURLException( + "Invalid IDN host " + host + ": " + e.getMessage()).initCause(e); } - } catch (ICUException | IndexOutOfBoundsException e) { - // ICUInputTooLongException (from Punycode.encode on an over-long label) and - // other hard ICU failures are unchecked; convert to MalformedURLException so - // callers (e.g. BasicURLNormalizer) reject the URL instead of crashing the task. - LOG.debug("Failed to convert IDN host {}: ", host, e); - throw (MalformedURLException) new MalformedURLException( - "Invalid IDN host " + host + ": " + e.getMessage()).initCause(e); - } if (idnaInfo.hasErrors()) { StringBuilder msg = new StringBuilder(); From b1e1d7f17109b20b21df0dda132f491142293253 Mon Sep 17 00:00:00 2001 From: Luca Foppiano Date: Wed, 3 Jun 2026 10:31:32 +0100 Subject: [PATCH 3/4] test: cover exception chain --- src/test/org/apache/nutch/util/TestURLUtil.java | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/src/test/org/apache/nutch/util/TestURLUtil.java b/src/test/org/apache/nutch/util/TestURLUtil.java index 573af66430..0d1e54282a 100644 --- a/src/test/org/apache/nutch/util/TestURLUtil.java +++ b/src/test/org/apache/nutch/util/TestURLUtil.java @@ -24,6 +24,7 @@ import java.net.MalformedURLException; import java.net.URL; +import java.util.Locale; import org.junit.jupiter.api.Test; import org.junit.jupiter.params.ParameterizedTest; @@ -446,6 +447,17 @@ public final void testConvertHostInvalid() { () -> URLUtil.convertIDNA2008("xn--a-รค.pt", true)); } + @Test + public void testConvertHostInvalidFromJuneCrawl() throws MalformedURLException { + // Goodies from the June Crawl 2026 + URL u = new URL( + 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+ String host = u.getHost(); + String hostLowerCase = host.toLowerCase(Locale.ROOT); + assertThrows(MalformedURLException.class, + () -> URLUtil.convertIDNA2008(hostLowerCase, true)); + } + @Test public void testFileProtocol() throws Exception { // keep one single slash NUTCH-1483 From 05db670e150c9008b8f111cd26866c3fecd230b8 Mon Sep 17 00:00:00 2001 From: Luca Foppiano Date: Wed, 3 Jun 2026 11:06:54 +0100 Subject: [PATCH 4/4] test: add URLDecoder before processing the host --- src/test/org/apache/nutch/util/TestURLUtil.java | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/src/test/org/apache/nutch/util/TestURLUtil.java b/src/test/org/apache/nutch/util/TestURLUtil.java index 0d1e54282a..5cd4028789 100644 --- a/src/test/org/apache/nutch/util/TestURLUtil.java +++ b/src/test/org/apache/nutch/util/TestURLUtil.java @@ -24,6 +24,7 @@ import java.net.MalformedURLException; import java.net.URL; +import java.net.URLDecoder; import java.util.Locale; import org.junit.jupiter.api.Test; @@ -449,12 +450,13 @@ public final void testConvertHostInvalid() { @Test public void testConvertHostInvalidFromJuneCrawl() throws MalformedURLException { - // Goodies from the June Crawl 2026 - URL u = new URL( - 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- String host = u.getHost(); - String hostLowerCase = host.toLowerCase(Locale.ROOT); - assertThrows(MalformedURLException.class, + // Goodies from the June Crawl 2026 + String url = 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+ URL u = new URL(url); + String host = u.getHost(); + String hostDecoded = java.net.URLDecoder.decode(host, java.nio.charset.StandardCharsets.UTF_8); + String hostLowerCase = hostDecoded.toLowerCase(Locale.ROOT); + assertThrows(MalformedURLException.class, () -> URLUtil.convertIDNA2008(hostLowerCase, true)); }