Fix content-encoding handling with buggy servers.

net/filter/filter_unittest.cc

 // Copyright 2014 The Chromium 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 "net/filter/filter.h"
 #include "net/filter/mock_filter_context.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 
@@ skipping 64 matching lines @@
 
   // Check to be sure that gzip can survive with other mime types.
   encoding_types.clear();
   encoding_types.push_back(Filter::FILTER_TYPE_GZIP);
   filter_context.SetMimeType("other/mime");
   Filter::FixupEncodingTypes(filter_context, &encoding_types);
   ASSERT_EQ(1U, encoding_types.size());
   EXPECT_EQ(Filter::FILTER_TYPE_GZIP, encoding_types.front());
 }
 
+TEST(FilterTest, GzipContentDispositionFilename) {
+  MockFilterContext filter_context;
+  filter_context.SetSdchResponse(false);
+
+  const std::string kGzipMime("application/x-tar");
+  const std::string kContentDisposition("attachment; filename=\"foo.tgz\"");
+  const std::string kURL("http://foo.com/getfoo.php");
+  std::vector<Filter::FilterType> encoding_types;
+
+  encoding_types.push_back(Filter::FILTER_TYPE_GZIP);
+  filter_context.SetMimeType(kGzipMime);
+  filter_context.SetURL(GURL(kURL));
+  filter_context.SetContentDisposition(kContentDisposition);
+  Filter::FixupEncodingTypes(filter_context, &encoding_types);
+  ASSERT_EQ(0U, encoding_types.size());
+}
+
 TEST(FilterTest, SdchEncoding) {
   // Handle content encodings including SDCH.
   const std::string kTextHtmlMime("text/html");
   MockFilterContext filter_context;
   filter_context.SetSdchResponse(true);
 
   std::vector<Filter::FilterType> encoding_types;
 
   // Check for most common encoding, and verify it survives unchanged.
   encoding_types.clear();
@@ skipping 246 matching lines @@
   encoding_types.clear();
   encoding_types.push_back(Filter::FILTER_TYPE_GZIP);
   filter_context.SetDownload(true);
   filter_context.SetMimeType(kHtmlMime);
   filter_context.SetURL(GURL(kGzUrl));
   Filter::FixupEncodingTypes(filter_context, &encoding_types);
   EXPECT_TRUE(encoding_types.empty());
 }
 
 }  // namespace net