Updated waitFor semantics

Former-commit-id: 1080c4eca42029535508f2503ac0a76e853a7fcc

dependency-check-core/src/main/java/org/owasp/dependencycheck/analyzer/AssemblyAnalyzer.java

@@ -17,20 +17,24 @@
  */
 package org.owasp.dependencycheck.analyzer;
 
+import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.InputStreamReader;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.xpath.XPath;
 import javax.xml.xpath.XPathExpressionException;
 import javax.xml.xpath.XPathFactory;
+
 import org.owasp.dependencycheck.Engine;
 import org.owasp.dependencycheck.analyzer.exception.AnalysisException;
 import org.owasp.dependencycheck.dependency.Confidence;
@@ -113,19 +117,13 @@ public class AssemblyAnalyzer extends AbstractFileTypeAnalyzer {
         final ProcessBuilder pb = new ProcessBuilder(args);
         try {
             final Process proc = pb.start();
+            // Try evacuating the error stream
+            final BufferedReader rdr = new BufferedReader(new InputStreamReader(proc.getErrorStream()));
+            String line = null;
+            while ((line = rdr.readLine()) != null) {
+                LOG.warning("Error from GrokAssembly: " + line);
+            }
             int rc = 0;
-            try {
-                rc = proc.waitFor();
-            } catch (InterruptedException ie) {
-                return;
-            }
-            if (rc == 3) {
-                LOG.info(dependency.getActualFilePath() + " is not a valid assembly");
-                return;
-            } else if (rc != 0) {
-                LOG.warning("Return code " + rc + " from GrokAssembly");
-            }
-            
             final Document doc = builder.parse(proc.getInputStream());
             final XPath xpath = XPathFactory.newInstance().newXPath();
 
@@ -153,6 +151,19 @@ public class AssemblyAnalyzer extends AbstractFileTypeAnalyzer {
                         product, Confidence.HIGH));
             }
 
+            try {
+                rc = proc.waitFor();
+            } catch (InterruptedException ie) {
+                return;
+            }
+            if (rc == 3) {
+                LOG.info(dependency.getActualFilePath() + " is not a valid assembly");
+                return;
+            } else if (rc != 0) {
+                LOG.warning("Return code " + rc + " from GrokAssembly");
+            }
+            
+
         } catch (IOException ioe) {
             throw new AnalysisException(ioe);
         } catch (SAXException saxe) {
@@ -208,7 +219,14 @@ public class AssemblyAnalyzer extends AbstractFileTypeAnalyzer {
         // Now, need to see if GrokAssembly actually runs from this location.
         final List<String> args = buildArgumentList();
         try {
-            final Process p = new ProcessBuilder(args).start();
+            final ProcessBuilder pb = new ProcessBuilder(args);
+            final Process p = pb.start();
+            // Try evacuating the error stream
+            final BufferedReader rdr = new BufferedReader(new InputStreamReader(p.getErrorStream()));
+            String line = null;
+            while ((line = rdr.readLine()) != null) {
+                // We expect this to complain
+            }
             final Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(p.getInputStream());
             final XPath xpath = XPathFactory.newInstance().newXPath();
             final String error = xpath.evaluate("/assembly/error", doc);