Author: markt
Date: Wed Feb 24 09:17:14 2010
New Revision: 915729
URL: http://svn.apache.org/viewvc?rev=915729&view=rev
Log:
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=48627
Regression in re-working of EL parsing
Keep literals as literals
Also handle deferredSyntaxAllowedAsLiteral
Modified:
tomcat/tc6.0.x/trunk/STATUS.txt
tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/AttributeParser.java
tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Parser.java
tomcat/tc6.0.x/trunk/test/org/apache/jasper/compiler/TestAttributeParser.java
tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml
Modified: tomcat/tc6.0.x/trunk/STATUS.txt
URL:
http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/STATUS.txt?rev=915729&r1=915728&r2=915729&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/STATUS.txt (original)
+++ tomcat/tc6.0.x/trunk/STATUS.txt Wed Feb 24 09:17:14 2010
@@ -76,17 +76,6 @@
if we remove the SCP auto feature, then there should be
something to replace it with
(http://ant.apache.org/manual/OptionalTasks/scp.html)
-* Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=48627
- Regression in re-working of EL parsing
- Keep literals as literals
- Also handle deferredSyntaxAllowedAsLiteral
- JUnit test cases and TCK passes with this patch
- OP confirms patch fixes issue
- Combined patch file, from revs.904949, 905226, 906465:
- https://issues.apache.org/bugzilla/attachment.cgi?id=24925
- +1: kkolinko, markt, jfclere
- -1:
-
* Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=48050
NamingContext.createSubcontext method returns Context with wrong name
Based on a suggestion by gingyang.xu
Modified:
tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/AttributeParser.java
URL:
http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/AttributeParser.java?rev=915729&r1=915728&r2=915729&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/AttributeParser.java
(original)
+++ tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/AttributeParser.java
Wed Feb 24 09:17:14 2010
@@ -24,7 +24,7 @@
* "\${1+1}". After unquoting, both appear as "${1+1}" but the first should
* evaluate to "2" and the second to "${1+1}". Literal \, $ and # need special
* treatment to ensure there is no ambiguity. The JSP attribute unquoting
- * covers \\, \", \', \$, \#, %\>, <\%, ' and "
+ * covers \\, \", \', \$, \#, %\>, <\%, &apos; and &quot;
*/
public class AttributeParser {
@@ -43,13 +43,16 @@
* scripting expressions.
* @param isELIgnored Is expression language being ignored on the page
* where the JSP attribute is defined.
+ * @param isDeferredSyntaxAllowedAsLiteral
+ * Are deferred expressions treated as literals?
* @return An unquoted JSP attribute that, if it contains
* expression language can be safely passed to the EL
* processor without fear of ambiguity.
*/
public static String getUnquoted(String input, char quote,
- boolean isELIgnored) {
+ boolean isELIgnored, boolean isDeferredSyntaxAllowedAsLiteral) {
return (new AttributeParser(input, quote, isELIgnored,
+ isDeferredSyntaxAllowedAsLiteral,
STRICT_QUOTE_ESCAPING)).getUnquoted();
}
@@ -62,15 +65,18 @@
* scripting expressions.
* @param isELIgnored Is expression language being ignored on the page
* where the JSP attribute is defined.
+ * @param isDeferredSyntaxAllowedAsLiteral
+ * Are deferred expressions treated as literals?
* @param strict The value to use for STRICT_QUOTE_ESCAPING.
* @return An unquoted JSP attribute that, if it contains
* expression language can be safely passed to the EL
* processor without fear of ambiguity.
*/
protected static String getUnquoted(String input, char quote,
- boolean isELIgnored, boolean strict) {
+ boolean isELIgnored, boolean isDeferredSyntaxAllowedAsLiteral,
+ boolean strict) {
return (new AttributeParser(input, quote, isELIgnored,
- strict)).getUnquoted();
+ isDeferredSyntaxAllowedAsLiteral, strict)).getUnquoted();
}
/* The quoted input string. */
@@ -83,6 +89,9 @@
* treated as literals rather than quoted values. */
private final boolean isELIgnored;
+ /* Are deferred expression treated as literals */
+ private final boolean isDeferredSyntaxAllowedAsLiteral;
+
/* Overrides the STRICT_QUOTE_ESCAPING. Used for Unit tests only. */
private final boolean strict;
@@ -109,12 +118,15 @@
* @param strict
*/
private AttributeParser(String input, char quote,
- boolean isELIgnored, boolean strict) {
+ boolean isELIgnored, boolean isDeferredSyntaxAllowedAsLiteral,
+ boolean strict) {
this.input = input;
this.quote = quote;
// If quote is null this is a scriptign expressions and any EL syntax
// should be ignored
this.isELIgnored = isELIgnored || (quote == 0);
+ this.isDeferredSyntaxAllowedAsLiteral =
+ isDeferredSyntaxAllowedAsLiteral;
this.strict = strict;
this.type = getType(input);
this.size = input.length();
@@ -151,22 +163,27 @@
char ch = nextChar();
if (!isELIgnored && ch == '\\') {
if (type == 0) {
- type = '$';
+ result.append("\\");
+ } else {
+ result.append(type);
+ result.append("{'\\\\'}");
}
- result.append(type);
- result.append("{'\\\\'}");
} else if (!isELIgnored && ch == '$' && lastChEscaped){
if (type == 0) {
- type = '$';
+ result.append("\\$");
+ } else {
+ result.append(type);
+ result.append("{'$'}");
}
- result.append(type);
- result.append("{'$'}");
} else if (!isELIgnored && ch == '#' && lastChEscaped){
+ // Note if isDeferredSyntaxAllowedAsLiteral==true, \# will
+ // not be treated as an escape
if (type == 0) {
- type = '$';
+ result.append("\\#");
+ } else {
+ result.append(type);
+ result.append("{'#'}");
}
- result.append(type);
- result.append("{'#'}");
} else if (ch == type){
if (i < size) {
char next = input.charAt(i);
@@ -197,8 +214,8 @@
private void parseEL() {
boolean endEL = false;
boolean insideLiteral = false;
+ char literalQuote = 0;
while (i < size && !endEL) {
- char literalQuote = '\'';
char ch = nextChar();
if (ch == '\'' || ch == '\"') {
if (insideLiteral) {
@@ -261,7 +278,10 @@
} else if (ch == '\\' && i + 1 < size) {
ch = input.charAt(i + 1);
if (ch == '\\' || ch == '\"' || ch == '\'' ||
- (!isELIgnored && (ch == '$' || ch == '#'))) {
+ (!isELIgnored &&
+ (ch == '$' ||
+ (!isDeferredSyntaxAllowedAsLiteral &&
+ ch == '#')))) {
i += 2;
lastChEscaped = true;
} else {
@@ -311,13 +331,13 @@
int j = 0;
int len = value.length();
char current;
-
+
while (j < len) {
current = value.charAt(j);
if (current == '\\') {
// Escape character - skip a character
j++;
- } else if (current == '#') {
+ } else if (current == '#' && !isDeferredSyntaxAllowedAsLiteral) {
if (j < (len -1) && value.charAt(j + 1) == '{') {
return '#';
}
Modified: tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Parser.java
URL:
http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Parser.java?rev=915729&r1=915728&r2=915729&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Parser.java (original)
+++ tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Parser.java Wed Feb 24
09:17:14 2010
@@ -247,7 +247,8 @@
quote = watch.charAt(0);
}
ret = AttributeParser.getUnquoted(reader.getText(start, stop),
- quote, pageInfo.isELIgnored());
+ quote, pageInfo.isELIgnored(),
+ pageInfo.isDeferredSyntaxAllowedAsLiteral());
} catch (IllegalArgumentException iae) {
err.jspError(start, iae.getMessage());
}
Modified:
tomcat/tc6.0.x/trunk/test/org/apache/jasper/compiler/TestAttributeParser.java
URL:
http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/test/org/apache/jasper/compiler/TestAttributeParser.java?rev=915729&r1=915728&r2=915729&view=diff
==============================================================================
---
tomcat/tc6.0.x/trunk/test/org/apache/jasper/compiler/TestAttributeParser.java
(original)
+++
tomcat/tc6.0.x/trunk/test/org/apache/jasper/compiler/TestAttributeParser.java
Wed Feb 24 09:17:14 2010
@@ -134,9 +134,24 @@
// Quoting <% and %>
assertEquals("hello <% world", evalAttr("hello <\\% world", '\"'));
assertEquals("hello %> world", evalAttr("hello %> world", '\"'));
+
+ // Test that the end of literal in EL expression is recognized in
+ // parseEL(), be it quoted with single or double quotes. That is, that
+ // AttributeParser correctly switches between parseLiteral and parseEL
+ // methods.
+ //
+ // The test is based on the difference in how the '\' character is
printed:
+ // when in parseLiteral \\${ will be printed as ${'\'}${, but if we
are still
+ // inside of parseEL it will be printed as \${, thus preventing the EL
+ // expression that follows from being evaluated.
+ //
+ assertEquals("foo\\bar\\baz",
evalAttr("${\'foo\'}\\\\${\'bar\'}\\\\${\'baz\'}", '\"'));
+ assertEquals("foo\\bar\\baz",
evalAttr("${\'foo\'}\\\\${\\\"bar\\\"}\\\\${\'baz\'}", '\"'));
+ assertEquals("foo\\bar\\baz",
evalAttr("${\\\"foo\\\"}\\\\${\'bar\'}\\\\${\\\"baz\\\"}", '\"'));
+ assertEquals("foo\\bar\\baz",
evalAttr("${\"foo\"}\\\\${\\\'bar\\\'}\\\\${\"baz\"}", '\''));
}
- public void testScriptExpressiinLiterals() {
+ public void testScriptExpressionLiterals() {
assertEquals(" \"hello world\" ", parseScriptExpression(
" \"hello world\" ", (char) 0));
assertEquals(" \"hello \\\"world\" ", parseScriptExpression(
@@ -149,13 +164,15 @@
ctx.setFunctionMapper(new FMapper());
ExpressionFactoryImpl exprFactory = new ExpressionFactoryImpl();
ValueExpression ve = exprFactory.createValueExpression(ctx,
- AttributeParser.getUnquoted(expression, quote, false, false),
+ AttributeParser.getUnquoted(expression, quote, false, false,
+ false),
String.class);
return (String) ve.getValue(ctx);
}
private String parseScriptExpression(String expression, char quote) {
- return AttributeParser.getUnquoted(expression, quote, false, false);
+ return AttributeParser.getUnquoted(expression, quote, false, false,
+ false);
}
public static class FMapper extends FunctionMapper {
Modified: tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml
URL:
http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml?rev=915729&r1=915728&r2=915729&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml Wed Feb 24 09:17:14 2010
@@ -152,6 +152,11 @@
regression in the first fix. (kkolinko)
</fix>
<fix>
+ <bug>48627</bug>: Fix regression in re-factored EL parsing. Keep
+ literals as literals and handle deferredSyntaxAllowedAsLiteral.
+ (kkolinko)
+ </fix>
+ <fix>
<bug>48668</bug>: When parsing JSPs only parse EL as EL if EL is
enabled
else strings such as ${ will be silently dropped. (markt)
</fix>
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