Don't allow null bytes in hosts of host permissions.

extensions/common/url_pattern_unittest.cc

 // Copyright (c) 2012 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 "base/memory/scoped_ptr.h"
 #include "extensions/common/url_pattern.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace {
@@ skipping 27 matching lines @@
     { "http:/bar", URLPattern::PARSE_ERROR_WRONG_SCHEME_SEPARATOR },
     { "http://bar", URLPattern::PARSE_ERROR_EMPTY_PATH },
   };
 
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kInvalidPatterns); ++i) {
     URLPattern pattern(URLPattern::SCHEME_ALL);
     EXPECT_EQ(kInvalidPatterns[i].expected_result,
               pattern.Parse(kInvalidPatterns[i].pattern))
         << kInvalidPatterns[i].pattern;
   }
+
+  {
+    // Cannot use a C string, because this contains a null byte.
+    std::string null_host("http://\0www/", 12);
+    URLPattern pattern(URLPattern::SCHEME_ALL);
+    EXPECT_EQ(URLPattern::PARSE_ERROR_INVALID_HOST,
+              pattern.Parse(null_host))
+        << null_host;
+  }
 };
 
 TEST(ExtensionURLPatternTest, Ports) {
   const struct {
     const char* pattern;
     URLPattern::ParseResult expected_result;
     const char* expected_port;
   } kTestPatterns[] = {
     { "http://foo:1234/", URLPattern::PARSE_SUCCESS, "1234" },
     { "http://foo:1234/bar", URLPattern::PARSE_SUCCESS, "1234" },
@@ skipping 737 matching lines @@
   EXPECT_TRUE(StrictlyContains(pattern10, pattern12));
   EXPECT_TRUE(StrictlyContains(pattern10, pattern13));
 
   // More...
   EXPECT_TRUE(StrictlyContains(pattern12, pattern11));
   EXPECT_TRUE(NeitherContains(pattern11, pattern13));
   EXPECT_TRUE(StrictlyContains(pattern12, pattern13));
 }
 
 }  // namespace