From: Tim Allison <tallison@apache.org>
Date: Wed, 8 Aug 2018 16:06:18 +0000 (+0000)
Subject: bug 62592 -- prevent StackOverflowError on corrupt thmx
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=070e8151099fafcdb2added80f0de71a89d85e7d;p=poi.git

bug 62592 -- prevent StackOverflowError on corrupt thmx

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1837658 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/src/ooxml/java/org/apache/poi/openxml4j/opc/ZipPackage.java b/src/ooxml/java/org/apache/poi/openxml4j/opc/ZipPackage.java
index 40fc2139f5..975e21d981 100644
--- a/src/ooxml/java/org/apache/poi/openxml4j/opc/ZipPackage.java
+++ b/src/ooxml/java/org/apache/poi/openxml4j/opc/ZipPackage.java
@@ -250,6 +250,9 @@ public final class ZipPackage extends OPCPackage {
         final ZipArchiveEntry contentTypeEntry =
                 zipArchive.getEntry(CONTENT_TYPES_PART_NAME);
         if (contentTypeEntry != null) {
+            if (this.contentTypeManager != null) {
+                throw new InvalidFormatException("ContentTypeManager can only be created once. This must be a cyclic relation?");
+            }
             try {
                 this.contentTypeManager = new ZipContentTypeManager(
                         zipArchive.getInputStream(contentTypeEntry), this);
diff --git a/src/ooxml/testcases/org/apache/poi/openxml4j/opc/TestPackage.java b/src/ooxml/testcases/org/apache/poi/openxml4j/opc/TestPackage.java
index a92906b765..ad7fe80c84 100644
--- a/src/ooxml/testcases/org/apache/poi/openxml4j/opc/TestPackage.java
+++ b/src/ooxml/testcases/org/apache/poi/openxml4j/opc/TestPackage.java
@@ -1090,6 +1090,21 @@ public final class TestPackage {
 		openInvalidFile("SampleSS.txt", true);
 	}
 
+	@Test(expected = InvalidFormatException.class)
+	public void testBug62592() throws Exception {
+		InputStream is = OpenXML4JTestDataSamples.openSampleStream("62592.thmx");
+		OPCPackage p = OPCPackage.open(is);
+	}
+
+	@Test
+	public void testBug62592SequentialCallsToGetParts() throws Exception {
+		//make absolutely certain that sequential calls don't throw InvalidFormatExceptions
+		String originalFile = OpenXML4JTestDataSamples.getSampleFileName("TestPackageCommon.docx");
+		OPCPackage p2 = OPCPackage.open(originalFile, PackageAccess.READ);
+		p2.getParts();
+		p2.getParts();
+	}
+
 	@Test
 	public void testDoNotCloseStream() throws IOException {
 		OutputStream os = Mockito.mock(OutputStream.class);
diff --git a/test-data/openxml4j/62592.thmx b/test-data/openxml4j/62592.thmx
new file mode 100644
index 0000000000..74489e3475
Binary files /dev/null and b/test-data/openxml4j/62592.thmx differ