-
-
Save NZKoz/392235903426322e0414 to your computer and use it in GitHub Desktop.
rails_xss
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
diff --git a/lib/rails_xss/string_ext.rb b/lib/rails_xss/string_ext.rb | |
index ae21705..ed1aaa2 100644 | |
--- a/lib/rails_xss/string_ext.rb | |
+++ b/lib/rails_xss/string_ext.rb | |
@@ -9,6 +9,19 @@ ActiveSupport::SafeBuffer.class_eval do | |
end | |
end | |
alias << concat | |
+ UNSAFE_STRING_METHODS = ["capitalize", "chomp", "chop", "delete", "downcase", "gsub", "lstrip", "next", "reverse", "rstrip", "slice", "squeeze", "strip", "sub", "succ", "swapcase", "tr", "tr_s", "upcase"].freeze | |
+ | |
+ for unsafe_method in UNSAFE_STRING_METHODS | |
+ class_eval <<-EOT, __FILE__, __LINE__ | |
+ def #{unsafe_method}(*args) | |
+ super.to_str | |
+ end | |
+ | |
+ def #{unsafe_method}!(*args) | |
+ raise TypeError, "Cannot modify SafeBuffer in place" | |
+ end | |
+ EOT | |
+ end | |
end | |
class String | |
diff --git a/test/safe_buffer_test.rb b/test/safe_buffer_test.rb | |
index 6a515da..cf3b5f5 100644 | |
--- a/test/safe_buffer_test.rb | |
+++ b/test/safe_buffer_test.rb | |
@@ -38,4 +38,14 @@ class SafeBufferTest < ActiveSupport::TestCase | |
new_buffer = @buffer.to_s | |
assert_equal ActiveSupport::SafeBuffer, new_buffer.class | |
end | |
+ | |
+ test "Should not return a safe buffer when using sub" do | |
+ assert !@buffer.sub('', "asdf").html_safe? | |
+ end | |
+ | |
+ test "Should raise argument error when using sub!" do | |
+ assert_raise ArgumentError do | |
+ @buffer.sub!('', "asdf") | |
+ end | |
+ end | |
end |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment