8204290: Add check to limit number of capture groups

Fri, 08 Jun 2018 11:11:06 +0200

author
hannesw
date
Fri, 08 Jun 2018 11:11:06 +0200
changeset 2522
51635f054bcb
parent 2519
49b31f261653
child 2523
319c1b31d551

8204290: Add check to limit number of capture groups
Reviewed-by: sundar, jlaskey

src/jdk/nashorn/internal/runtime/regexp/joni/Config.java file | annotate | diff | comparison | revisions
src/jdk/nashorn/internal/runtime/regexp/joni/ScanEnvironment.java file | annotate | diff | comparison | revisions
src/jdk/nashorn/internal/runtime/regexp/joni/exception/ErrorMessages.java file | annotate | diff | comparison | revisions
test/script/basic/JDK-8204290.js file | annotate | diff | comparison | revisions
     1.1 --- a/src/jdk/nashorn/internal/runtime/regexp/joni/Config.java	Fri Nov 08 16:49:37 2019 +0000
     1.2 +++ b/src/jdk/nashorn/internal/runtime/regexp/joni/Config.java	Fri Jun 08 11:11:06 2018 +0200
     1.3 @@ -45,6 +45,7 @@
     1.4  
     1.5      final int NREGION                   = 10;
     1.6      final int MAX_BACKREF_NUM           = 1000;
     1.7 +    final int MAX_CAPTURE_GROUP_NUM     = 0x8000;
     1.8      final int MAX_REPEAT_NUM            = 100000;
     1.9      final int MAX_MULTI_BYTE_RANGES_NUM = 10000;
    1.10  
     2.1 --- a/src/jdk/nashorn/internal/runtime/regexp/joni/ScanEnvironment.java	Fri Nov 08 16:49:37 2019 +0000
     2.2 +++ b/src/jdk/nashorn/internal/runtime/regexp/joni/ScanEnvironment.java	Fri Jun 08 11:11:06 2018 +0200
     2.3 @@ -62,6 +62,9 @@
     2.4      }
     2.5  
     2.6      public int addMemEntry() {
     2.7 +        if (numMem >= Config.MAX_CAPTURE_GROUP_NUM) {
     2.8 +            throw new InternalException(ErrorMessages.ERR_TOO_MANY_CAPTURE_GROUPS);
     2.9 +        }
    2.10          if (numMem++ == 0) {
    2.11              memNodes = new Node[SCANENV_MEMNODES_SIZE];
    2.12          } else if (numMem >= memNodes.length) {
     3.1 --- a/src/jdk/nashorn/internal/runtime/regexp/joni/exception/ErrorMessages.java	Fri Nov 08 16:49:37 2019 +0000
     3.2 +++ b/src/jdk/nashorn/internal/runtime/regexp/joni/exception/ErrorMessages.java	Fri Jun 08 11:11:06 2018 +0200
     3.3 @@ -31,6 +31,7 @@
     3.4      final String ERR_PARSER_BUG = "internal parser error (bug)";
     3.5      final String ERR_UNDEFINED_BYTECODE = "undefined bytecode (bug)";
     3.6      final String ERR_UNEXPECTED_BYTECODE = "unexpected bytecode (bug)";
     3.7 +    final String ERR_TOO_MANY_CAPTURE_GROUPS = "too many capture groups";
     3.8  
     3.9      /* syntax error */
    3.10      final String ERR_END_PATTERN_AT_LEFT_BRACE = "end pattern at left brace";
     4.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     4.2 +++ b/test/script/basic/JDK-8204290.js	Fri Jun 08 11:11:06 2018 +0200
     4.3 @@ -0,0 +1,40 @@
     4.4 +/*
     4.5 + * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
     4.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     4.7 + * 
     4.8 + * This code is free software; you can redistribute it and/or modify it
     4.9 + * under the terms of the GNU General Public License version 2 only, as
    4.10 + * published by the Free Software Foundation.
    4.11 + * 
    4.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    4.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    4.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    4.15 + * version 2 for more details (a copy is included in the LICENSE file that
    4.16 + * accompanied this code).
    4.17 + * 
    4.18 + * You should have received a copy of the GNU General Public License version
    4.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    4.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    4.21 + * 
    4.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    4.23 + * or visit www.oracle.com if you need additional information or have any
    4.24 + * questions.
    4.25 + */
    4.26 +
    4.27 +/**
    4.28 + * JDK-8204290: Add check to limit number of capture groups
    4.29 + *
    4.30 + * @test
    4.31 + * @run
    4.32 + */
    4.33 +
    4.34 +try {
    4.35 +    var captureGroups = "";
    4.36 +    for (i=0; i < 0x8001; i++) { captureGroups += "()"; }
    4.37 +    new RegExp(captureGroups);
    4.38 +    fail("Expected exception");
    4.39 +} catch (e) {
    4.40 +    Assert.assertTrue(e instanceof SyntaxError);
    4.41 +    Assert.assertEquals(e.message, "too many capture groups");
    4.42 +}
    4.43 +

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