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file.c: infect from arguments

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* file.c (rb_check_realpath_internal): infetct the result with
  arguments, no taint if none are tainted and cwd is not used.
  [ruby-core:83583] [Bug #14060]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60596 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-11-01 01:51:57 +00:00
parent f5f6232399
commit 42727ceb19
2 changed files with 18 additions and 1 deletions
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2
file.c
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@ -4086,7 +4086,7 @@ rb_check_realpath_internal(VALUE basedir, VALUE path, enum rb_realpath_mode mode
}
}
OBJ_TAINT(resolved);
OBJ_INFECT(resolved, unresolved_path);
RB_GC_GUARD(unresolved_path);
RB_GC_GUARD(curdir);
return resolved;

17
test/ruby/test_file.rb
View file

@ -283,6 +283,23 @@ class TestFile < Test::Unit::TestCase
}
end
def test_realpath_taintedness
Dir.mktmpdir('rubytest-realpath') {|tmpdir|
realdir = File.realpath(tmpdir)
assert_predicate(realdir, :tainted?)
dir, base = File.split(realdir)
assert_predicate(File.realpath(base, dir), :tainted?)
base.untaint
assert_predicate(File.realpath(base, dir), :tainted?)
base.taint
dir.untaint
assert_predicate(File.realpath(base, dir), :tainted?)
base.untaint
assert_not_predicate(File.realpath(base, dir), :tainted?)
assert_predicate(Dir.chdir(dir) {File.realpath(base)}, :tainted?)
}
end
def test_realdirpath
Dir.mktmpdir('rubytest-realdirpath') {|tmpdir|
realdir = File.realpath(tmpdir)