fix integer overflow of request with body larger than 4gb, see issue #953

scm-webapp/src/test/java/sonia/scm/web/cgi/DefaultCGIExecutorTest.java

@@ -0,0 +1,54 @@
+package sonia.scm.web.cgi;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.runners.MockitoJUnitRunner;
+
+import javax.servlet.http.HttpServletRequest;
+
+import static org.junit.Assert.*;
+import static org.mockito.Mockito.when;
+
+/**
+ * Unit tests for {@link DefaultCGIExecutor}.
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class DefaultCGIExecutorTest {
+
+  @Mock
+  private HttpServletRequest request;
+
+  @Test
+  public void testCreateCGIContentLength() {
+    when(request.getHeader("Content-Length")).thenReturn("42");
+    assertEquals("42", DefaultCGIExecutor.createCGIContentLength(request, false));
+    assertEquals("42", DefaultCGIExecutor.createCGIContentLength(request, true));
+  }
+
+  @Test
+  public void testCreateCGIContentLengthWithZeroLength() {
+    when(request.getHeader("Content-Length")).thenReturn("0");
+    assertEquals("", DefaultCGIExecutor.createCGIContentLength(request, false));
+    assertEquals("-1", DefaultCGIExecutor.createCGIContentLength(request, true));
+  }
+
+  @Test
+  public void testCreateCGIContentLengthWithoutContentLengthHeader() {
+    assertEquals("", DefaultCGIExecutor.createCGIContentLength(request, false));
+    assertEquals("-1", DefaultCGIExecutor.createCGIContentLength(request, true));
+  }
+
+  @Test
+  public void testCreateCGIContentLengthWithLengthThatExeedsInteger() {
+    when(request.getHeader("Content-Length")).thenReturn("6314297259");
+    assertEquals("6314297259", DefaultCGIExecutor.createCGIContentLength(request, false));
+  }
+
+  @Test
+  public void testCreateCGIContentLengthWithNonNumberHeader() {
+    when(request.getHeader("Content-Length")).thenReturn("abc");
+    assertEquals("", DefaultCGIExecutor.createCGIContentLength(request, false));
+  }
+
+}