Author: markt
Date: Tue Mar 18 10:32:16 2014
New Revision: 1578814
URL: http://svn.apache.org/r1578814
Log:
Fix possible overflow when parsing long values from a byte array.
Added:
tomcat/tc7.0.x/trunk/test/org/apache/tomcat/util/buf/TestAscii.java
(props changed)
- copied unchanged from r1578812,
tomcat/trunk/test/org/apache/tomcat/util/buf/TestAscii.java
Modified:
tomcat/tc7.0.x/trunk/ (props changed)
tomcat/tc7.0.x/trunk/java/org/apache/tomcat/util/buf/Ascii.java
tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml
Propchange: tomcat/tc7.0.x/trunk/
------------------------------------------------------------------------------
Merged /tomcat/trunk:r1578812-1578813
Modified: tomcat/tc7.0.x/trunk/java/org/apache/tomcat/util/buf/Ascii.java
URL:
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/java/org/apache/tomcat/util/buf/Ascii.java?rev=1578814&r1=1578813&r2=1578814&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/java/org/apache/tomcat/util/buf/Ascii.java (original)
+++ tomcat/tc7.0.x/trunk/java/org/apache/tomcat/util/buf/Ascii.java Tue Mar 18
10:32:16 2014
@@ -40,10 +40,11 @@ public final class Ascii {
private static final boolean[] isWhite = new boolean[256];
private static final boolean[] isDigit = new boolean[256];
+ private static final long OVERFLOW_LIMIT = Long.MAX_VALUE / 10;
+
/*
* Initialize character translation and type tables.
*/
-
static {
for (int i = 0; i < 256; i++) {
toUpper[i] = (byte)i;
@@ -206,19 +207,12 @@ public final class Ascii {
}
long n = c - '0';
- long m;
-
while (--len > 0) {
- if (!isDigit(c = b[off++])) {
- throw new NumberFormatException();
- }
- m = n * 10 + c - '0';
-
- if (m < n) {
- // Overflow
- throw new NumberFormatException();
+ if (isDigit(c = b[off++]) &&
+ (n < OVERFLOW_LIMIT || (n == OVERFLOW_LIMIT && (c - '0') <
8))) {
+ n = n * 10 + c - '0';
} else {
- n = m;
+ throw new NumberFormatException();
}
}
Propchange: tomcat/tc7.0.x/trunk/test/org/apache/tomcat/util/buf/TestAscii.java
------------------------------------------------------------------------------
svn:eol-style = native
Modified: tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml
URL:
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml?rev=1578814&r1=1578813&r2=1578814&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml Tue Mar 18 10:32:16 2014
@@ -120,6 +120,10 @@
and use a bit shift instead of a multiplication as it is marginally
faster. (markt/kkolinko)
</fix>
+ <fix>
+ Fix possible overflow when parsing long values from a byte array.
+ (markt)
+ </fix>
</changelog>
</subsection>
<subsection name="Jasper">
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