Issue #11648 - Introducing HttpDateTime class.

jetty-core/jetty-http/src/main/java/org/eclipse/jetty/http/DateParser.java

@@ -22,7 +22,9 @@
 
 /**
  * ThreadLocal data parsers for HTTP style dates
+ * @deprecated use {@link HttpDateTime} instead
  */
+@Deprecated(since = "12.0.9", forRemoval = true)
 public class DateParser
 {
     private static final TimeZone GMT = TimeZone.getTimeZone("GMT");
@@ -47,6 +49,10 @@ public class DateParser
         "EEE dd-MMM-yy HH:mm:ss zzz", "EEE dd-MMM-yy HH:mm:ss"
     };
 
+    /**
+     * @deprecated use {@link HttpDateTime#parseToEpoch(String)} instead
+     */
+    @Deprecated(since = "12.0.9", forRemoval = true)
     public static long parseDate(String date)
     {
         return DATE_PARSER.apply(DateParser::new, DateParser::parse, date);

jetty-core/jetty-http/src/main/java/org/eclipse/jetty/http/HttpCookie.java

@@ -14,9 +14,6 @@
 package org.eclipse.jetty.http;
 
 import java.time.Instant;
-import java.time.ZoneOffset;
-import java.time.ZonedDateTime;
-import java.time.format.DateTimeFormatter;
 import java.util.Collections;
 import java.util.Locale;
 import java.util.Map;
@@ -921,22 +918,19 @@ static String toString(HttpCookie httpCookie)
      */
     static String formatExpires(Instant expires)
     {
-        return DateTimeFormatter.RFC_1123_DATE_TIME
-            .withZone(ZoneOffset.UTC)
-            .format(expires);
+        return HttpDateTime.format(expires);
     }
 
     /**
-     * <p>Parses the {@code Expires} attribute value
-     * (in RFC 1123 format) into an {@link Instant}.</p>
+     * <p>Parses the {@code Expires} Date/Time attribute value
+     * into an {@link Instant}.</p>
      *
-     * @param expires an instant in the RFC 1123 string format
+     * @param expires a date/time in one of the RFC6265 supported formats
      * @return an {@link Instant} parsed from the given string
      */
     static Instant parseExpires(String expires)
     {
-        // TODO: RFC 1123 format only for now, see https://www.rfc-editor.org/rfc/rfc2616#section-3.3.1.
-        return ZonedDateTime.parse(expires, DateTimeFormatter.RFC_1123_DATE_TIME).toInstant();
+        return HttpDateTime.parse(expires);
     }
 
     private static Map<String, String> lazyAttributePut(Map<String, String> attributes, String key, String value)

jetty-core/jetty-http/src/main/java/org/eclipse/jetty/http/HttpDateTime.java

@@ -0,0 +1,229 @@
+//
+// ========================================================================
+// Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others.
+//
+// This program and the accompanying materials are made available under the
+// terms of the Eclipse Public License v. 2.0 which is available at
+// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
+// which is available at https://www.apache.org/licenses/LICENSE-2.0.
+//
+// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
+// ========================================================================
+//
+
+package org.eclipse.jetty.http;
+
+import java.time.Instant;
+import java.time.ZoneId;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Calendar;
+import java.util.Objects;
+import java.util.StringTokenizer;
+
+import org.eclipse.jetty.util.Index;
+import org.eclipse.jetty.util.StringUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * HTTP Date/Time parsing and formatting.
+ *
+ * <p>
+ *     Also covers RFC6265 Cookie Date parsing and formatting.
+ * </p>
+ */
+public class HttpDateTime
+{
+    private static final Logger LOG = LoggerFactory.getLogger(HttpDateTime.class);
+
+    private static final Index<Integer> MONTH_CACHE = new Index.Builder<Integer>()
+        .caseSensitive(false)
+        // Note: Calendar.Month fields are zero based.
+        .with("Jan", Calendar.JANUARY + 1)
+        .with("Feb", Calendar.FEBRUARY + 1)
+        .with("Mar", Calendar.MARCH + 1)
+        .with("Apr", Calendar.APRIL + 1)
+        .with("May", Calendar.MAY + 1)
+        .with("Jun", Calendar.JUNE + 1)
+        .with("Jul", Calendar.JULY + 1)
+        .with("Aug", Calendar.AUGUST + 1)
+        .with("Sep", Calendar.SEPTEMBER + 1)
+        .with("Oct", Calendar.OCTOBER + 1)
+        .with("Nov", Calendar.NOVEMBER + 1)
+        .with("Dec", Calendar.DECEMBER + 1)
+        .build();
+
+    private HttpDateTime()
+    {
+    }
+
+    /**
+     * Similar to {@link #parse(String)} but returns unix epoch
+     *
+     * @param datetime the Date/Time to parse.
+     * @return unix epoch in milliseconds, or -1 if unable to parse the input date/time
+     */
+    public static long parseToEpoch(String datetime)
+    {
+        try
+        {
+            Instant instant = parse(datetime);
+            return instant.toEpochMilli();
+        }
+        catch (IllegalArgumentException e)
+        {
+            if (LOG.isDebugEnabled())
+                LOG.debug("Unable to parse Date/Time: {}", datetime, e);
+            return -1;
+        }
+    }
+
+    /**
+     * <p>Parses a Date/Time value</p>
+     *
+     * <p>Supports the following Date/Time formats found in both
+     *  <a href="https://datatracker.ietf.org/doc/html/rfc9110#name-date-time-formats">RFC 9110 (HTTP Semantics)</a> and
+     *  <a href="https://datatracker.ietf.org/doc/html/rfc6265#section-5.1.1">RFC 6265 (HTTP State Management Mechanism)</a>
+     * </p>
+     *
+     * <ul>
+     *     <li>{@code Sun, 06 Nov 1994 08:49:37 GMT} - RFC 1123 (preferred)</li>
+     *     <li>{@code Sunday, 06-Nov-94 08:49:37 GMT} - RFC 850 (obsolete)</li>
+     *     <li>{@code Sun Nov  6 08:49:37 1994} - ANSI C's {@code asctime()} format</li>
+     * </ul>
+     *
+     * <p>
+     *  Parsing is done according to the algorithm specified in
+     *  <a href="https://datatracker.ietf.org/doc/html/rfc6265#section-5.1.1">RFC6265: Section 5.1.1: Date</a>
+     * </p>
+     *
+     * @param datetime a Date/Time string in a supported format
+     * @return an {@link Instant} parsed from the given string
+     * @throws IllegalArgumentException if unable to parse date/time
+     */
+    public static Instant parse(String datetime)
+    {
+        Objects.requireNonNull(datetime, "Date/Time string cannot be null");
+
+        int year = -1;
+        int month = -1;
+        int day = -1;
+        int hour = -1;
+        int minute = -1;
+        int second = -1;
+
+        try
+        {
+            int tokenCount = 0;
+            StringTokenizer tokenizer = new StringTokenizer(datetime, "\t" + // %x09
+                " !\"#$%&'()*+,-./" + " + " + // %x20-2F
+                ";<=>?@" + // %x3B-40
+                "[\\]^_`" + // %x5B-60
+                "{|}~" // %x7B-7E
+            );
+            while (tokenizer.hasMoreTokens())
+            {
+                String token = tokenizer.nextToken();
+                // ensure we don't exceed the number of expected tokens.
+                if (++tokenCount > 6)
+                {
+                    // This is a horribly bad syntax / format
+                    throw new IllegalStateException("Too many delimiters for a Date/Time format");
+                }
+
+                if (token.isBlank())
+                    continue; // skip blank tokens
+
+                // RFC 6265 - Section 5.1.1 - Step 2.1 - time (00:00:00)
+                if (hour == (-1) && token.length() == 8 && token.charAt(2) == ':' && token.charAt(5) == ':')
+                {
+                    second = StringUtil.toInt(token, 6);
+                    minute = StringUtil.toInt(token, 3);
+                    hour = StringUtil.toInt(token, 0);
+                    continue;
+                }
+
+                // RFC 6265 - Section 5.1.1 - Step 2.2
+                if (day == (-1) && token.length() <= 2)
+                {
+                    day = StringUtil.toInt(token, 0);
+                    continue;
+                }
+
+                // RFC 6265 - Section 5.1.1 - Step 2.3
+                if (month == (-1) && token.length() == 3)
+                {
+                    Integer m = MONTH_CACHE.getBest(token);
+                    if (m != null)
+                    {
+                        month = m;
+                        continue;
+                    }
+                }
+
+                // RFC 6265 - Section 5.1.1 - Step 2.4
+                if (year == (-1))
+                {
+                    if (token.length() <= 2)
+                    {
+                        year = StringUtil.toInt(token, 0);
+                    }
+                    else if (token.length() == 4)
+                    {
+                        year = StringUtil.toInt(token, 0);
+                    }
+                    continue;
+                }
+            }
+        }
+        catch (Throwable x)
+        {
+            if (LOG.isDebugEnabled())
+                LOG.debug("Ignore: Unable to parse Date/Time", x);
+        }
+
+        // RFC 6265 - Section 5.1.1 - Step 3
+        if ((year > 70) && (year <= 99))
+            year += 1900;
+        // RFC 6265 - Section 5.1.1 - Step 4
+        if ((year >= 0) && (year <= 69))
+            year += 2000;
+
+        // RFC 6265 - Section 5.1.1 - Step 5
+        if (day == (-1))
+            throw new IllegalArgumentException("Missing [day]: " + datetime);
+        if (month == (-1))
+            throw new IllegalArgumentException("Missing [month]: " + datetime);
+        if (year == (-1))
+            throw new IllegalArgumentException("Missing [year]: " + datetime);
+        if (hour == (-1))
+            throw new IllegalArgumentException("Missing [time]: " + datetime);
+        if (day < 1 || day > 31)
+            throw new IllegalArgumentException("Invalid [day]: " + datetime);
+        if (month < 1 || month > 31)
+            throw new IllegalArgumentException("Invalid [month]: " + datetime);
+        if (hour > 23)
+            throw new IllegalArgumentException("Invalid [hour]: " + datetime);
+        if (minute > 59)
+            throw new IllegalArgumentException("Invalid [minute]: " + datetime);
+        if (second > 59)
+            throw new IllegalArgumentException("Invalid [second]: " + datetime);
+
+        // RFC 6265 - Section 5.1.1 - Step 6
+        ZonedDateTime dateTime = ZonedDateTime.of(year,
+            month, day, hour, minute, second, 0,
+            ZoneId.of("GMT"));
+
+        // RFC 6265 - Section 5.1.1 - Step 7
+        return dateTime.toInstant();
+    }
+
+    public static String format(Instant instant)
+    {
+        return DateTimeFormatter.RFC_1123_DATE_TIME
+            .withZone(ZoneOffset.UTC)
+            .format(instant);
+    }
+}

jetty-core/jetty-http/src/main/java/org/eclipse/jetty/http/HttpFields.java

@@ -517,10 +517,7 @@ private static long parseDateField(HttpField field)
         if (val == null)
             return -1;
 
-        final long date = DateParser.parseDate(val);
-        if (date == -1)
-            throw new IllegalArgumentException("Cannot convert date: " + val);
-        return date;
+        return HttpDateTime.parse(val).toEpochMilli();
     }
 
     /**

jetty-core/jetty-http/src/test/java/org/eclipse/jetty/http/HttpCookieTest.java

@@ -14,7 +14,6 @@
 package org.eclipse.jetty.http;
 
 import java.time.Instant;
-import java.time.format.DateTimeParseException;
 import java.util.List;
 
 import org.junit.jupiter.params.ParameterizedTest;
@@ -90,7 +89,7 @@ public void testParseCookies(String setCookieValue, HttpCookie expectedCookie)
     public static List<Arguments> invalidAttributes()
     {
         return List.of(
-            Arguments.of("Expires", "blah", DateTimeParseException.class),
+            Arguments.of("Expires", "blah", IllegalArgumentException.class),
             Arguments.of("HttpOnly", "blah", IllegalArgumentException.class),
             Arguments.of("Max-Age", "blah", NumberFormatException.class),
             Arguments.of("SameSite", "blah", IllegalArgumentException.class),
@@ -105,4 +104,5 @@ public void testParseInvalidAttributes(String name, String value, Class<? extend
         assertThrows(failure, () -> HttpCookie.build("A", "1")
             .attribute(name, value));
     }
+
 }