Relax the EncryptMetadata check.

core/fpdfapi/parser/cpdf_security_handler_embeddertest.cpp

 // Copyright 2016 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "testing/embedder_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class CPDFSecurityHandlerEmbeddertest : public EmbedderTest {};
 
 TEST_F(CPDFSecurityHandlerEmbeddertest, Unencrypted) {
   ASSERT_TRUE(OpenDocument("about_blank.pdf"));
   EXPECT_EQ(0xFFFFFFFF, FPDF_GetDocPermissions(document()));
 }
 
 TEST_F(CPDFSecurityHandlerEmbeddertest, UnencryptedWithPassword) {
   ASSERT_TRUE(OpenDocument("about_blank.pdf", "foobar"));
   EXPECT_EQ(0xFFFFFFFF, FPDF_GetDocPermissions(document()));
 }
 
 TEST_F(CPDFSecurityHandlerEmbeddertest, NoPassword) {
   EXPECT_FALSE(OpenDocument("encrypted.pdf"));
 }
 
+TEST_F(CPDFSecurityHandlerEmbeddertest, BadPassword) {
+  EXPECT_FALSE(OpenDocument("encrypted.pdf", "tiger"));
+}
+
 TEST_F(CPDFSecurityHandlerEmbeddertest, UserPassword) {
   ASSERT_TRUE(OpenDocument("encrypted.pdf", "1234"));
   EXPECT_EQ(0xFFFFF2C0, FPDF_GetDocPermissions(document()));
 }
 
 TEST_F(CPDFSecurityHandlerEmbeddertest, OwnerPassword) {
   ASSERT_TRUE(OpenDocument("encrypted.pdf", "5678"));
   EXPECT_EQ(0xFFFFFFFC, FPDF_GetDocPermissions(document()));
 }
+
+TEST_F(CPDFSecurityHandlerEmbeddertest, NoPasswordVersion5) {
+  ASSERT_FALSE(OpenDocument("bug_644.pdf", "1234"));

[Wei Li, 2016/12/16 23:45:57]

Does no-password case test empty password? Otherwise this is exactly same as
BadPasswordVersion5()

[Tom Sepez, 2016/12/17 00:23:48]

Nice catch.

+}
+
+TEST_F(CPDFSecurityHandlerEmbeddertest, BadPasswordVersion5) {
+  ASSERT_FALSE(OpenDocument("bug_644.pdf", "1234"));
+}
+
+TEST_F(CPDFSecurityHandlerEmbeddertest, OnwerPasswordVersion5) {

[Wei Li, 2016/12/16 23:45:57]

s/Onwer/Owner

[Tom Sepez, 2016/12/17 00:24:35]

Done.

+  ASSERT_TRUE(OpenDocument("bug_644.pdf", "a"));
+  EXPECT_EQ(0xFFFFFFFC, FPDF_GetDocPermissions(document()));
+}
+
+TEST_F(CPDFSecurityHandlerEmbeddertest, UserPasswordVersion5) {
+  ASSERT_TRUE(OpenDocument("bug_644.pdf", "b"));
+  EXPECT_EQ(0xFFFFFFFC, FPDF_GetDocPermissions(document()));
+}