Author: markt
Date: Thu Aug  6 09:48:11 2015
New Revision: 1694431

URL: http://svn.apache.org/r1694431
Log:
Fix https://bz.apache.org/bugzilla/show_bug.cgi?id=58031
Make the (first) reason parameter parsing failed available as a request 
attribute and then use it to provide a better status code via the 
FailedRequstFilter (if configured).

Modified:
    tomcat/tc8.0.x/trunk/   (props changed)
    tomcat/tc8.0.x/trunk/java/org/apache/catalina/Globals.java
    tomcat/tc8.0.x/trunk/java/org/apache/catalina/connector/Request.java
    
tomcat/tc8.0.x/trunk/java/org/apache/catalina/filters/FailedRequestFilter.java
    tomcat/tc8.0.x/trunk/java/org/apache/tomcat/util/http/Parameters.java
    tomcat/tc8.0.x/trunk/test/org/apache/catalina/connector/TestRequest.java
    tomcat/tc8.0.x/trunk/webapps/docs/changelog.xml

Propchange: tomcat/tc8.0.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Thu Aug  6 09:48:11 2015
@@ -1 +1 @@
-/tomcat/trunk:1636524,1637156,1637176,1637188,1637331,1637684,1637695,1638720-1638725,1639653,1640010,1640083-1640084,1640088,1640275,1640322,1640347,1640361,1640365,1640403,1640410,1640652,1640655-1640658,1640688,1640700-1640883,1640903,1640976,1640978,1641000,1641026,1641038-1641039,1641051-1641052,1641058,1641064,1641300,1641369,1641374,1641380,1641486,1641634,1641656-1641692,1641704,1641707-1641718,1641720-1641722,1641735,1641981,1642233,1642280,1642554,1642564,1642595,1642606,1642668,1642679,1642697,1642699,1642766,1643002,1643045,1643054-1643055,1643066,1643121,1643128,1643206,1643209-1643210,1643216,1643249,1643270,1643283,1643309-1643310,1643323,1643365-1643366,1643370-1643371,1643465,1643474,1643536,1643570,1643634,1643649,1643651,1643654,1643675,1643731,1643733-1643734,1643761,1643766,1643814,1643937,1643963,1644017,1644169,1644201-1644203,1644321,1644323,1644516,1644523,1644529,1644535,1644730,1644768,1644784-1644785,1644790,1644793,1644815,1644884,1644886,1644890,1644892
 
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666757,1666966,1666972,1666985,1666995,1666997,1667292,1667402,1667406,1667546,1667615,1667630,1667636,1667688,1667764,1667871,1668026,1668135,1668193,1668593,1668596,1668630,1668639,1668843,1669353,1669370,1669451,1669800,1669838,1669876,1669882,1670394,1670433,1670591,1670598-1670600,1670610,1670631,1670719,1670724,1670726,1670730,1670940,1671112,1672272,1672284,1673754,1674294,1675461,1675486,1675594,1675830,1676231,1676250-1676251,1676364,1676381,1676393,1676479,1676525,1676552,1676615,1676630,1676634,1676721,1676926,1676943,1677140,1677802,1678011,1678162,1678174,1678339,1678426-1678427,1678694,1678701,1679534,1679708,1679710,1679716,1680034,1680246,1681056,1681123,1681138,1681280,1681283,1681286,1681450,1681697,1681701,1681729,1681770,1681779,1681793,1681807,1681837-1681838,1681854,1681862,1681958,1682028,1682033,1682311,1682315,1682317,1682320,1682324,1682330,1682842,1684172,1684366,1684383,1684526-1684527,1684549-1684550,1685739,1685744,1685772,1685816,1685826,1685891,168724
 
2,1687268,1687340,1688563,1688841,1688878,1688885,1688896,1688901,1689345-1689346,1689357,1689656,1689675-1689677,1689679,1689687,1689825,1689856,1689918,1690011,1690021,1690054,1690080,1690209,1691134,1691487,1691813,1692744-1692747,1692849,1693088,1693105,1693429,1693461,1694058,1694111,1694290
+/tomcat/trunk:1636524,1637156,1637176,1637188,1637331,1637684,1637695,1638720-1638725,1639653,1640010,1640083-1640084,1640088,1640275,1640322,1640347,1640361,1640365,1640403,1640410,1640652,1640655-1640658,1640688,1640700-1640883,1640903,1640976,1640978,1641000,1641026,1641038-1641039,1641051-1641052,1641058,1641064,1641300,1641369,1641374,1641380,1641486,1641634,1641656-1641692,1641704,1641707-1641718,1641720-1641722,1641735,1641981,1642233,1642280,1642554,1642564,1642595,1642606,1642668,1642679,1642697,1642699,1642766,1643002,1643045,1643054-1643055,1643066,1643121,1643128,1643206,1643209-1643210,1643216,1643249,1643270,1643283,1643309-1643310,1643323,1643365-1643366,1643370-1643371,1643465,1643474,1643536,1643570,1643634,1643649,1643651,1643654,1643675,1643731,1643733-1643734,1643761,1643766,1643814,1643937,1643963,1644017,1644169,1644201-1644203,1644321,1644323,1644516,1644523,1644529,1644535,1644730,1644768,1644784-1644785,1644790,1644793,1644815,1644884,1644886,1644890,1644892
 
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907,1658207,1658734,1658781,1658790,1658799,1658802,1658804,1658833,1658840,1658966,1659043,1659053,1659059,1659188-1659189,1659216,1659263,1659293,1659304,1659306-1659307,1659382,1659384,1659428,1659471,1659486,1659505,1659516,1659521,1659524,1659559,1659562,1659803,1659806,1659814,1659833,1659862,1659905,1659919,1659948,1659967,1659983-1659984,1660060,1660074,1660077,1660133,1660168,1660331-1660332,1660353,1660358,1660924,1661386,1661867,1661972,1661990,1662200,1662308-1662309,1662548,1662614,1662736,1662985,1662988-1662989,1663264,1663277,1663298,1663534,1663562,1663676,1663715,1663754,1663768,1663772,1663781,1663893,1663995,1664143,1664163,1664174,1664301,1664317,1664347,1664657,1664659,1664710,1664863-1664864,1664866,1665085,1665292,1665559,1665653,1665661,1665672,1665694,1665697,1665736,1665779,1665976-1665977,1665980-1665981,1665985-1665986,1665989,1665998,1666004,1666008,1666013,1666017,1666024,1666116,1666386-1666387,1666494,1666496,1666552,1666569,1666579,1666637,1666649,1
 
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2,1687261,1687268,1687340,1688563,1688841,1688878,1688885,1688896,1688901,1689345-1689346,1689357,1689656,1689675-1689677,1689679,1689687,1689825,1689856,1689918,1690011,1690021,1690054,1690080,1690209,1691134,1691487,1691813,1692744-1692747,1692849,1693088,1693105,1693429,1693461,1694058,1694111,1694290

Modified: tomcat/tc8.0.x/trunk/java/org/apache/catalina/Globals.java
URL: 
http://svn.apache.org/viewvc/tomcat/tc8.0.x/trunk/java/org/apache/catalina/Globals.java?rev=1694431&r1=1694430&r2=1694431&view=diff
==============================================================================
--- tomcat/tc8.0.x/trunk/java/org/apache/catalina/Globals.java (original)
+++ tomcat/tc8.0.x/trunk/java/org/apache/catalina/Globals.java Thu Aug  6 
09:48:11 2015
@@ -248,6 +248,13 @@ public final class Globals {
 
 
     /**
+     * The reason that the parameter parsing failed.
+     */
+    public static final String PARAMETER_PARSE_FAILED_REASON_ATTR =
+            "org.apache.catalina.parameter_parse_failed_reason";
+
+
+    /**
      * The master flag which controls strict servlet specification
      * compliance.
      */

Modified: tomcat/tc8.0.x/trunk/java/org/apache/catalina/connector/Request.java
URL: 
http://svn.apache.org/viewvc/tomcat/tc8.0.x/trunk/java/org/apache/catalina/connector/Request.java?rev=1694431&r1=1694430&r2=1694431&view=diff
==============================================================================
--- tomcat/tc8.0.x/trunk/java/org/apache/catalina/connector/Request.java 
(original)
+++ tomcat/tc8.0.x/trunk/java/org/apache/catalina/connector/Request.java Thu 
Aug  6 09:48:11 2015
@@ -88,6 +88,7 @@ import org.apache.tomcat.util.buf.UDecod
 import org.apache.tomcat.util.http.CookieProcessor;
 import org.apache.tomcat.util.http.FastHttpDateFormat;
 import org.apache.tomcat.util.http.Parameters;
+import org.apache.tomcat.util.http.Parameters.FailReason;
 import org.apache.tomcat.util.http.ServerCookie;
 import org.apache.tomcat.util.http.ServerCookies;
 import org.apache.tomcat.util.http.fileupload.FileItem;
@@ -2703,6 +2704,7 @@ public class Request
             }
 
             if (!location.isDirectory()) {
+                
parameters.setParseFailedReason(FailReason.MULTIPART_CONFIG_INVALID);
                 partsParseException = new IOException(
                         sm.getString("coyoteRequest.uploadLocationInvalid",
                                 location));
@@ -2715,6 +2717,7 @@ public class Request
             try {
                 factory.setRepository(location.getCanonicalFile());
             } catch (IOException ioe) {
+                parameters.setParseFailedReason(FailReason.IO_ERROR);
                 partsParseException = ioe;
                 return;
             }
@@ -2781,6 +2784,7 @@ public class Request
                             // Value separator
                             postSize++;
                             if (postSize > maxPostSize) {
+                                
parameters.setParseFailedReason(FailReason.POST_TOO_LARGE);
                                 throw new IllegalStateException(sm.getString(
                                         "coyoteRequest.maxPostSizeExceeded"));
                             }
@@ -2791,19 +2795,23 @@ public class Request
 
                 success = true;
             } catch (InvalidContentTypeException e) {
+                
parameters.setParseFailedReason(FailReason.INVALID_CONTENT_TYPE);
                 partsParseException = new ServletException(e);
             } catch (FileUploadBase.SizeException e) {
+                parameters.setParseFailedReason(FailReason.POST_TOO_LARGE);
                 checkSwallowInput();
                 partsParseException = new IllegalStateException(e);
             } catch (FileUploadException e) {
+                parameters.setParseFailedReason(FailReason.IO_ERROR);
                 partsParseException = new IOException(e);
             } catch (IllegalStateException e) {
+                // addParameters() will set parseFailedReason
                 checkSwallowInput();
                 partsParseException = e;
             }
         } finally {
             if (partsParseException != null || !success) {
-                parameters.setParseFailed(true);
+                parameters.setParseFailedReason(FailReason.UNKNOWN);
             }
         }
     }
@@ -3082,6 +3090,7 @@ public class Request
                                 sm.getString("coyoteRequest.postTooLarge"));
                     }
                     checkSwallowInput();
+                    parameters.setParseFailedReason(FailReason.POST_TOO_LARGE);
                     return;
                 }
                 byte[] formData = null;
@@ -3095,6 +3104,7 @@ public class Request
                 }
                 try {
                     if (readPostBody(formData, len) != len) {
+                        
parameters.setParseFailedReason(FailReason.REQUEST_BODY_INCOMPLETE);
                         return;
                     }
                 } catch (IOException e) {
@@ -3105,6 +3115,7 @@ public class Request
                                 sm.getString("coyoteRequest.parseParameters"),
                                 e);
                     }
+                    
parameters.setParseFailedReason(FailReason.CLIENT_DISCONNECT);
                     return;
                 }
                 parameters.processParameters(formData, 0, len);
@@ -3115,6 +3126,7 @@ public class Request
                     formData = readChunkedPostBody();
                 } catch (IllegalStateException ise) {
                     // chunkedPostTooLarge error
+                    parameters.setParseFailedReason(FailReason.POST_TOO_LARGE);
                     Context context = getContext();
                     if (context != null && 
context.getLogger().isDebugEnabled()) {
                         context.getLogger().debug(
@@ -3124,6 +3136,7 @@ public class Request
                     return;
                 } catch (IOException e) {
                     // Client disconnect
+                    
parameters.setParseFailedReason(FailReason.CLIENT_DISCONNECT);
                     Context context = getContext();
                     if (context != null && 
context.getLogger().isDebugEnabled()) {
                         context.getLogger().debug(
@@ -3139,7 +3152,7 @@ public class Request
             success = true;
         } finally {
             if (!success) {
-                parameters.setParseFailed(true);
+                parameters.setParseFailedReason(FailReason.UNKNOWN);
             }
         }
 
@@ -3353,6 +3366,18 @@ public class Request
                     }
 
                     @Override
+                    public void set(Request request, String name, Object 
value) {
+                        // NO-OP
+                    }
+                });
+        specialAttributes.put(Globals.PARAMETER_PARSE_FAILED_REASON_ATTR,
+                new SpecialAttributeAdapter() {
+                    @Override
+                    public Object get(Request request, String name) {
+                        return 
request.getCoyoteRequest().getParameters().getParseFailedReason();
+                    }
+
+                    @Override
                     public void set(Request request, String name, Object 
value) {
                         // NO-OP
                     }

Modified: 
tomcat/tc8.0.x/trunk/java/org/apache/catalina/filters/FailedRequestFilter.java
URL: 
http://svn.apache.org/viewvc/tomcat/tc8.0.x/trunk/java/org/apache/catalina/filters/FailedRequestFilter.java?rev=1694431&r1=1694430&r2=1694431&view=diff
==============================================================================
--- 
tomcat/tc8.0.x/trunk/java/org/apache/catalina/filters/FailedRequestFilter.java 
(original)
+++ 
tomcat/tc8.0.x/trunk/java/org/apache/catalina/filters/FailedRequestFilter.java 
Thu Aug  6 09:48:11 2015
@@ -30,6 +30,7 @@ import org.apache.catalina.comet.CometFi
 import org.apache.catalina.comet.CometFilterChain;
 import org.apache.juli.logging.Log;
 import org.apache.juli.logging.LogFactory;
+import org.apache.tomcat.util.http.Parameters.FailReason;
 
 /**
  * Filter that will reject requests if there was a failure during parameter
@@ -56,8 +57,41 @@ public class FailedRequestFilter extends
     public void doFilter(ServletRequest request, ServletResponse response,
             FilterChain chain) throws IOException, ServletException {
         if (!isGoodRequest(request)) {
-            ((HttpServletResponse) response)
-                    .sendError(HttpServletResponse.SC_BAD_REQUEST);
+            FailReason reason = (FailReason) request.getAttribute(
+                    Globals.PARAMETER_PARSE_FAILED_REASON_ATTR);
+
+            int status;
+
+            switch (reason) {
+                case IO_ERROR:
+                    // Not the client's fault
+                    status = HttpServletResponse.SC_INTERNAL_SERVER_ERROR;
+                    break;
+                case POST_TOO_LARGE:
+                    status = HttpServletResponse.SC_REQUEST_ENTITY_TOO_LARGE;
+                    break;
+                case TOO_MANY_PARAMETERS:
+                    // 413/414 aren't really correct here since the request 
body
+                    // and/or URI could be well below any limits set. Use the
+                    // default.
+                case UNKNOWN: // Assume the client is at fault
+                // Various things that the client can get wrong that don't have
+                // a specific status code so use the default.
+                case INVALID_CONTENT_TYPE:
+                case MULTIPART_CONFIG_INVALID:
+                case NO_NAME:
+                case REQUEST_BODY_INCOMPLETE:
+                case URL_DECODING:
+                case CLIENT_DISCONNECT:
+                    // Client is never going to see this so this is really just
+                    // for the access logs. The default is fine.
+                default:
+                    // 400
+                    status = HttpServletResponse.SC_BAD_REQUEST;
+                    break;
+            }
+
+            ((HttpServletResponse) response).sendError(status);
             return;
         }
         chain.doFilter(request, response);

Modified: tomcat/tc8.0.x/trunk/java/org/apache/tomcat/util/http/Parameters.java
URL: 
http://svn.apache.org/viewvc/tomcat/tc8.0.x/trunk/java/org/apache/tomcat/util/http/Parameters.java?rev=1694431&r1=1694430&r2=1694431&view=diff
==============================================================================
--- tomcat/tc8.0.x/trunk/java/org/apache/tomcat/util/http/Parameters.java 
(original)
+++ tomcat/tc8.0.x/trunk/java/org/apache/tomcat/util/http/Parameters.java Thu 
Aug  6 09:48:11 2015
@@ -65,10 +65,10 @@ public final class Parameters {
     private int parameterCount = 0;
 
     /**
-     * Is set to <code>true</code> if there were failures during parameter
-     * parsing.
+     * Set to the reason for the failure (the first failure if there is more
+     * than one) if there were failures during parameter parsing.
      */
-    private boolean parseFailed = false;
+    private FailReason parseFailedReason = null;
 
     public Parameters() {
         // NO-OP
@@ -100,23 +100,34 @@ public final class Parameters {
         }
     }
 
+
     public boolean isParseFailed() {
-        return parseFailed;
+        return parseFailedReason != null;
+    }
+
+
+    public FailReason getParseFailedReason() {
+        return parseFailedReason;
     }
 
-    public void setParseFailed(boolean parseFailed) {
-        this.parseFailed = parseFailed;
+
+    public void setParseFailedReason(FailReason failReason) {
+        if (this.parseFailedReason == null) {
+            this.parseFailedReason = failReason;
+        }
     }
 
+
     public void recycle() {
         parameterCount = 0;
         paramHashValues.clear();
         didQueryParameters=false;
         encoding=null;
         decodedQuery.recycle();
-        parseFailed = false;
+        parseFailedReason = null;
     }
 
+
     // -------------------- Data access --------------------
     // Access to the current name/values, no side effect ( processing ).
     // You must explicitly call handleQueryParameters and the post methods.
@@ -188,7 +199,7 @@ public final class Parameters {
         if (limit > -1 && parameterCount > limit) {
             // Processing this parameter will push us over the limit. ISE is
             // what Request.parseParts() uses for requests that are too big
-            parseFailed = true;
+            setParseFailedReason(FailReason.TOO_MANY_PARAMETERS);
             throw new IllegalStateException(sm.getString(
                     "parameters.maxCountFail", Integer.valueOf(limit)));
         }
@@ -333,7 +344,7 @@ public final class Parameters {
                             log.debug(message);
                     }
                 }
-                parseFailed = true;
+                setParseFailedReason(FailReason.NO_NAME);
                 continue;
                 // invalid chunk - it's better to ignore
             }
@@ -387,7 +398,6 @@ public final class Parameters {
                 } catch (IllegalStateException ise) {
                     // Hitting limit stops processing further params but does
                     // not cause request to fail.
-                    parseFailed = true;
                     UserDataHelper.Mode logMode = 
maxParamCountLog.getNextMode();
                     if (logMode != null) {
                         String message = ise.getMessage();
@@ -406,7 +416,7 @@ public final class Parameters {
                     break;
                 }
             } catch (IOException e) {
-                parseFailed = true;
+                setParseFailedReason(FailReason.URL_DECODING);
                 decodeFailCount++;
                 if (decodeFailCount == 1 || log.isDebugEnabled()) {
                     if (log.isDebugEnabled()) {
@@ -510,4 +520,18 @@ public final class Parameters {
         }
         return sb.toString();
     }
+
+
+    public enum FailReason {
+        CLIENT_DISCONNECT,
+        MULTIPART_CONFIG_INVALID,
+        INVALID_CONTENT_TYPE,
+        IO_ERROR,
+        NO_NAME,
+        POST_TOO_LARGE,
+        REQUEST_BODY_INCOMPLETE,
+        TOO_MANY_PARAMETERS,
+        UNKNOWN,
+        URL_DECODING
+    }
 }

Modified: 
tomcat/tc8.0.x/trunk/test/org/apache/catalina/connector/TestRequest.java
URL: 
http://svn.apache.org/viewvc/tomcat/tc8.0.x/trunk/test/org/apache/catalina/connector/TestRequest.java?rev=1694431&r1=1694430&r2=1694431&view=diff
==============================================================================
--- tomcat/tc8.0.x/trunk/test/org/apache/catalina/connector/TestRequest.java 
(original)
+++ tomcat/tc8.0.x/trunk/test/org/apache/catalina/connector/TestRequest.java 
Thu Aug  6 09:48:11 2015
@@ -84,17 +84,17 @@ public class TestRequest extends TomcatB
         assertTrue(client.isResponseBodyOK());
         client.reset();
         client.doRequest(0, false); // 0 bytes - too small should fail
-        assertTrue(client.isResponse400());
+        assertTrue(client.isResponse413());
         client.reset();
         client.doRequest(1, false); // 1 byte - too small should fail
-        assertTrue(client.isResponse400());
+        assertTrue(client.isResponse413());
 
         client.reset();
 
         // Edge cases around actual content length
         client.reset();
         client.doRequest(6, false); // Too small should fail
-        assertTrue(client.isResponse400());
+        assertTrue(client.isResponse413());
         client.reset();
         client.doRequest(7, false); // Just enough should pass
         assertTrue(client.isResponse200());

Modified: tomcat/tc8.0.x/trunk/webapps/docs/changelog.xml
URL: 
http://svn.apache.org/viewvc/tomcat/tc8.0.x/trunk/webapps/docs/changelog.xml?rev=1694431&r1=1694430&r2=1694431&view=diff
==============================================================================
--- tomcat/tc8.0.x/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/tc8.0.x/trunk/webapps/docs/changelog.xml Thu Aug  6 09:48:11 2015
@@ -66,6 +66,11 @@
         returned instead. (markt)
       </add>
       <fix>
+        <bug>58031</bug>: Make the (first) reason parameter parsing failed
+        available as a request attribute and then use it to provide a better 
+        status code via the FailedRequstFilter (if configured). (markt)
+      </fix>
+      <fix>
         <bug>58086</bug>: Correct a regression in the fix for 58086 that
         incorrectly handled WAR URLs. (violetagg)
       </fix>



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