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From GitBox <...@apache.org>
Subject [GitHub] cziegeler closed pull request #3: SLING-7502 Resource Digest Calculation returns different values for the same data
Date Thu, 01 Jan 1970 00:00:00 GMT
cziegeler closed pull request #3: SLING-7502 Resource Digest Calculation returns different
values for the same data
URL: https://github.com/apache/sling-org-apache-sling-installer-core/pull/3
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git a/src/main/java/org/apache/sling/installer/core/impl/FileDataStore.java b/src/main/java/org/apache/sling/installer/core/impl/FileDataStore.java
index f7e2990..3b5242a 100644
--- a/src/main/java/org/apache/sling/installer/core/impl/FileDataStore.java
+++ b/src/main/java/org/apache/sling/installer/core/impl/FileDataStore.java
@@ -29,6 +29,7 @@
 import java.io.OutputStream;
 import java.math.BigInteger;
 import java.security.MessageDigest;
+import java.util.Collection;
 import java.util.Dictionary;
 import java.util.Enumeration;
 import java.util.HashMap;
@@ -46,7 +47,7 @@
 public class FileDataStore {
 
     private static final Logger log = LoggerFactory.getLogger(FileDataStore.class);
-    
+
     /**
      * The name of the bundle context property defining the location for the
      * installer files (value is "sling.installer.dir").
@@ -159,7 +160,7 @@ public File createNewDataFile(final InputStream stream,
                 final CacheEntry storedDigest = this.digestCache.get(url);
                 if ( storedDigest != null && storedDigest.digest.equals(digest) )
{
                     log.debug(
-                            "File {} with digest {} found, returning {}", 
+                            "File {} with digest {} found, returning {}",
                             url, digest, safePath(storedDigest.file));
                     return storedDigest.file;
                 }
@@ -280,12 +281,7 @@ public static String computeDigest(Dictionary<String, Object> data)
{
             }
             for(final String key : sortedKeys) {
                 oos.writeObject(key);
-                final Object val = data.get(key);
-                if ( val instanceof Number ) {
-                    oos.writeObject(String.valueOf(val));
-                } else {
-                    oos.writeObject(val);
-                }
+                writeValue(data.get(key), oos);
             }
 
             oos.flush();
@@ -299,7 +295,21 @@ public static String computeDigest(Dictionary<String, Object> data)
{
             return result;
         }
     }
-    
+
+    private static void writeValue(final Object val, final ObjectOutputStream oos) throws
IOException {
+        if ( val instanceof Number ) {
+            writeValue(String.valueOf(val), oos);
+        } else if ( val instanceof Collection ) {
+            for (Object o : (Collection<?>) val) {
+                writeValue(o, oos);
+            }
+        } else if ( val instanceof String ) {
+            oos.writeUTF((String) val);
+        } else {
+            oos.writeObject(val);
+        }
+    }
+
     private static final String safePath(File f) {
         return f == null ? null : f.getAbsolutePath();
     }
diff --git a/src/test/java/org/apache/sling/installer/core/impl/FileDataStoreTest.java b/src/test/java/org/apache/sling/installer/core/impl/FileDataStoreTest.java
new file mode 100644
index 0000000..3c00352
--- /dev/null
+++ b/src/test/java/org/apache/sling/installer/core/impl/FileDataStoreTest.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.sling.installer.core.impl;
+
+import java.util.ArrayList;
+import java.util.Dictionary;
+import java.util.Hashtable;
+import java.util.LinkedList;
+import java.util.List;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+
+public class FileDataStoreTest {
+    @Test
+    public void testDigestFromDictionary() {
+        Dictionary<String,Object> dict1 = new Hashtable<>();
+        List<String> l1 = new ArrayList<>();
+        l1.add("x");
+        l1.add("y");
+        dict1.put("la", l1);
+        dict1.put("foo", new int[] {3, 2, 7});
+        String dig1 = FileDataStore.computeDigest(dict1);
+
+        Dictionary<String,Object> dict2 = new Hashtable<>();
+        List<String> l2 = new LinkedList<>();
+        l2.add("x");
+        l2.add("y");
+        dict2.put("la", l2);
+        dict2.put("foo", new int[] {3, 2, 7});
+        String dig2 = FileDataStore.computeDigest(dict2);
+        assertEquals(dig1, dig2);
+    }
+
+    @Test
+    public void testDigestFromDictionaryNegative1() {
+        Dictionary<String,Object> dict1 = new Hashtable<>();
+        List<String> l1 = new ArrayList<>();
+        l1.add("y");
+        l1.add("x");
+        dict1.put("la", l1);
+        dict1.put("foo", new int[] {3, 2, 7});
+        String dig1 = FileDataStore.computeDigest(dict1);
+
+        Dictionary<String,Object> dict2 = new Hashtable<>();
+        List<String> l2 = new LinkedList<>();
+        l2.add("x");
+        l2.add("y");
+        dict2.put("la", l2);
+        dict2.put("foo", new int[] {3, 2, 7});
+        String dig2 = FileDataStore.computeDigest(dict2);
+        assertNotEquals(dig1, dig2);
+    }
+
+    @Test
+    public void testDigestFromDictionaryNegative2() {
+        Dictionary<String,Object> dict1 = new Hashtable<>();
+        List<String> l1 = new ArrayList<>();
+        l1.add("x");
+        l1.add("y");
+        dict1.put("la", l1);
+        dict1.put("foo", new int[] {7, 2, 3});
+        String dig1 = FileDataStore.computeDigest(dict1);
+
+        Dictionary<String,Object> dict2 = new Hashtable<>();
+        List<String> l2 = new LinkedList<>();
+        l2.add("x");
+        l2.add("y");
+        dict2.put("la", l2);
+        dict2.put("foo", new int[] {3, 2, 7});
+        String dig2 = FileDataStore.computeDigest(dict2);
+        assertNotEquals(dig1, dig2);
+    }
+}


 

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