dir.c: check NUL bytes

* dir.c (GlobPathValue): should be used in rb_push_glob only.
  other methods should use FilePathValue.
  https://hackerone.com/reports/302338

* dir.c (rb_push_glob): expand GlobPathValue

From: Nobuyoshi Nakada <nobu@ruby-lang.org>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@62974 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 0 deletions

diff --git a/test/ruby/test_dir.rb b/test/ruby/test_dir.rb
index cead4beb93..000bc24e85 100644
--- a/test/ruby/test_dir.rb
+++ b/test/ruby/test_dir.rb
@@ -156,6 +156,9 @@ class TestDir < Test::Unit::TestCase
     open(File.join(@root, "}}a"), "wb") {}
     assert_equal(%w(}}{} }}a).map {|f| File.join(@root, f)}, Dir.glob(File.join(@root, '}}{\{\},a}')))
     assert_equal(%w(}}{} }}a b c).map {|f| File.join(@root, f)}, Dir.glob(File.join(@root, '{\}\}{\{\},a},b,c}')))
+    assert_raise(ArgumentError) {
+      Dir.glob([[@root, File.join(@root, "*")].join("\0")])
+    }
   end
 
   def test_glob_recursive
@@ -229,18 +232,23 @@ class TestDir < Test::Unit::TestCase
   def test_entries
     assert_entries(Dir.open(@root) {|dir| dir.entries})
     assert_entries(Dir.entries(@root).to_a)
+    assert_raise(ArgumentError) {Dir.entries(@root+"\0")}
   end
 
   def test_foreach
+    assert_entries(Dir.open(@root) {|dir| dir.each.to_a})
     assert_entries(Dir.foreach(@root).to_a)
+    assert_raise(ArgumentError) {Dir.foreach(@root+"\0").to_a}
   end
 
   def test_children
     assert_entries(Dir.children(@root), true)
+    assert_raise(ArgumentError) {Dir.children(@root+"\0")}
   end
 
   def test_each_child
     assert_entries(Dir.each_child(@root).to_a, true)
+    assert_raise(ArgumentError) {Dir.each_child(@root+"\0").to_a}
   end
 
   def test_dir_enc
@@ -397,6 +405,7 @@ class TestDir < Test::Unit::TestCase
     end
     assert_raise(Errno::ENOENT) {Dir.empty?(@nodir)}
     assert_not_send([Dir, :empty?, File.join(@root, "b")])
+    assert_raise(ArgumentError) {Dir.empty?(@root+"\0")}
   end
 
   def test_glob_gc_for_fd