', './not_enumerable')
end
end
def test_sanitizer_remove_xpaths_faulty_xpath
sanitizer = ActionView::Sanitizer.new
assert_raises Nokogiri::XML::XPath::SyntaxError do
sanitizer.remove_xpaths('hello', %w(..faulty_xpath))
end
end
def test_strip_tags_with_quote
sanitizer = ActionView::FullSanitizer.new
string = '<" 
hi'
assert_equal ' hi', sanitizer.sanitize(string)
end
def test_strip_tags_pending
skip "Pending. These methods don't pass."
sanitizer = ActionView::FullSanitizer.new
# Loofah doesn't see any elements in this
# Actual: ""
assert_equal("<<"))
# Actual: "Weia onclick='alert(document.cookie);'/>rdos"
assert_equal("Weirdos", sanitizer.sanitize("Wei<a onclick='alert(document.cookie);'/>rdos"))
# Loofah strips newlines.
# Actual: "This is a test.It no longer contains any HTML."
assert_equal(
%{This is a test.\n\n\nIt no longer contains any HTML.\n}, sanitizer.sanitize(
%{This is <b>a <a href="" target="_blank">test</a></b>. \n\n\n\nIt no longer contains any HTML.
\n}))
# Leaves comment text.
# Actual: "This has a comment here."
assert_equal "This has a here.", sanitizer.sanitize("This has a here.")
# Leaves part of a CDATA section
# Actual: "This has a ]]> here."
assert_equal "This has a here.", sanitizer.sanitize("This has a ]]> here.")
# Actual: "This has an unclosed ]] here..."
assert_equal "This has an unclosed ", sanitizer.sanitize("This has an unclosed ]] here...")
# Fails on the blank string.
# Actual: ''
[nil, '', ' '].each { |blank| assert_equal blank, sanitizer.sanitize(blank) }
end
def test_strip_tags
sanitizer = ActionView::FullSanitizer.new
assert_equal("Dont touch me", sanitizer.sanitize("Dont touch me"))
assert_equal("This is a test.", sanitizer.sanitize("This is a test.
"))
assert_equal("This is a test.", sanitizer.sanitize("This is a test."))
assert_equal "This has a here.", sanitizer.sanitize("This has a here.")
assert_nothing_raised { sanitizer.sanitize("This is a frozen string with no tags".freeze) }
end
def test_strip_links_pending
skip "Pending. Extracted from test_strip_links."
sanitizer = ActionView::LinkSanitizer.new
# Only one of the a-tags are parsed here
# Actual: "a href='hello'>all day long/a>"
assert_equal "all day long", sanitizer.sanitize("<a href='hello'>all day long</a>")
# Loofah reads this as '' which the LinkSanitizer removes
# Actual: ""
assert_equal "on my mind\nall day long")
assert_equal "0wn3d", sanitizer.sanitize("0wn3d")
assert_equal "Magic", sanitizer.sanitize("Magic")
assert_equal "FrrFox", sanitizer.sanitize("FrrFox ")
assert_equal "My mind\nall day long", sanitizer.sanitize("My mind\nall day long")
end
def test_sanitize_form
assert_sanitized "", ''
end
def test_sanitize_plaintext
raw = "<span>foo</span></plaintext>"
assert_sanitized raw, "<span>foo</span>"
end
def test_sanitize_script
assert_sanitized "a b c<script language=\"Javascript\">blah blah blah</script>d e f", "a b cd e f"
end
def test_sanitize_js_handlers
raw = %{onthis="do that" <a href="#" onclick="hello" name="foo" onbogus="remove me">hello</a>}
assert_sanitized raw, %{onthis="do that" <a href="#" name="foo">hello</a>}
end
def test_sanitize_javascript_href
raw = %{href="javascript:bang" <a href="javascript:bang" name="hello">foo</a>, <span href="javascript:bang">bar</span>}
assert_sanitized raw, %{href="javascript:bang" <a name="hello">foo</a>, <span>bar</span>}
end
def test_sanitize_image_src
raw = %{src="javascript:bang" <img src="javascript:bang" width="5">foo</img>, <span src="javascript:bang">bar</span>}
assert_sanitized raw, %{src="javascript:bang" <img width="5">foo</img>, <span>bar</span>}
end
ActionView::WhiteListSanitizer.allowed_tags.each do |tag_name|
define_method "test_should_allow_#{tag_name}_tag" do
assert_sanitized "start <#{tag_name} title=\"1\" onclick=\"foo\">foo <bad>bar</bad> baz</#{tag_name}> end", %(start <#{tag_name} title="1">foo bar baz</#{tag_name}> end)
end
end
def test_should_allow_anchors
assert_sanitized %(<a href="foo" onclick="bar"><script>baz</script></a>), %(<a href=\"foo\">baz</a>)
end
def test_video_poster_sanitization
assert_sanitized %(<video src="videofile.ogg" autoplay poster="posterimage.jpg"></video>), %(<video src="videofile.ogg" poster="posterimage.jpg"></video>)
assert_sanitized %(<video src="videofile.ogg" poster=javascript:alert(1)></video>), %(<video src="videofile.ogg"></video>)
end
# RFC 3986, sec 4.2
def test_allow_colons_in_path_component
assert_sanitized("<a href=\"./this:that\">foo</a>")
end
%w(src width height alt).each do |img_attr|
define_method "test_should_allow_image_#{img_attr}_attribute" do
assert_sanitized %(<img #{img_attr}="foo" onclick="bar" />), %(<img #{img_attr}="foo" />)
end
end
def test_should_handle_non_html
assert_sanitized 'abc'
end
def test_should_handle_blank_text
assert_sanitized nil
assert_sanitized ''
end
def test_should_allow_custom_tags
text = "<u>foo</u>"
sanitizer = ActionView::WhiteListSanitizer.new
assert_equal(text, sanitizer.sanitize(text, :tags => %w(u)))
end
def test_should_allow_only_custom_tags
text = "<u>foo</u> with <i>bar</i>"
sanitizer = ActionView::WhiteListSanitizer.new
assert_equal("<u>foo</u> with bar", sanitizer.sanitize(text, :tags => %w(u)))
end
def test_should_allow_custom_tags_with_attributes
text = %(<blockquote cite="http://example.com/">foo</blockquote>)
sanitizer = ActionView::WhiteListSanitizer.new
assert_equal(text, sanitizer.sanitize(text))
end
def test_should_allow_custom_tags_with_custom_attributes
text = %(<blockquote foo="bar">Lorem ipsum</blockquote>)
sanitizer = ActionView::WhiteListSanitizer.new
assert_equal(text, sanitizer.sanitize(text, :attributes => ['foo']))
end
def test_should_raise_argument_error_if_tags_is_not_enumerable
sanitizer = ActionView::WhiteListSanitizer.new
e = assert_raise(ArgumentError) do
sanitizer.sanitize('', :tags => 'foo')
end
assert_equal "You should pass :tags as an Enumerable", e.message
end
def test_should_raise_argument_error_if_attributes_is_not_enumerable
sanitizer = ActionView::WhiteListSanitizer.new
e = assert_raise(ArgumentError) do
sanitizer.sanitize('', :attributes => 'foo')
end
assert_equal "You should pass :attributes as an Enumerable", e.message
end
def test_should_not_accept_non_loofah_inheriting_scrubber
sanitizer = ActionView::WhiteListSanitizer.new
scrubber = Object.new
scrubber.class_eval do
def scrub(node); node.name = 'h1'; end
end
assert_raise Loofah::ScrubberNotFound do
sanitizer.sanitize('', :scrubber => scrubber)
end
end
def test_should_accept_loofah_inheriting_scrubber
sanitizer = ActionView::WhiteListSanitizer.new
scrubber = Loofah::Scrubber.new
scrubber.class_eval do
def scrub(node); node.name = 'h1'; end
end
html = "<script>hello!</script>"
assert_equal "<h1>hello!</h1>", sanitizer.sanitize(html, :scrubber => scrubber)
end
def test_should_accept_loofah_scrubber_that_wraps_a_block
sanitizer = ActionView::WhiteListSanitizer.new
scrubber = Loofah::Scrubber.new { |node| node.name = 'h1' }
html = "<script>hello!</script>"
assert_equal "<h1>hello!</h1>", sanitizer.sanitize(html, :scrubber => scrubber)
end
def test_custom_scrubber_takes_precedence_over_other_options
sanitizer = ActionView::WhiteListSanitizer.new
scrubber = Loofah::Scrubber.new { |node| node.name = 'h1' }
html = "<script>hello!</script>"
assert_equal "<h1>hello!</h1>", sanitizer.sanitize(html, :scrubber => scrubber, :tags => ['foo'])
end
[%w(img src), %w(a href)].each do |(tag, attr)|
define_method "test_should_strip_#{attr}_attribute_in_#{tag}_with_bad_protocols" do
assert_sanitized %(<#{tag} #{attr}="javascript:bang" title="1">boo</#{tag}>), %(<#{tag} title="1">boo</#{tag}>)
end
end
def test_should_block_script_tag
assert_sanitized %(<SCRIPT\nSRC=http://ha.ckers.org/xss.js></SCRIPT>), ""
end
def test_should_not_fall_for_xss_image_hack_pending
skip "Pending."
# Actual: "<img>alert(\"XSS\")\">"
assert_sanitized %(<IMG """><SCRIPT>alert("XSS")</SCRIPT>">), "<img>"
end
[%(<IMG SRC="javascript:alert('XSS');">),
%(<IMG SRC=javascript:alert('XSS')>),
%(<IMG SRC=JaVaScRiPt:alert('XSS')>),
%(<IMG SRC=javascript:alert("XSS")>),
%(<IMG SRC=javascript:alert(String.fromCharCode(88,83,83))>),
%(<IMG SRC=javascript:alert('XSS')>),
%(<IMG SRC=javascript:alert('XSS')>),
%(<IMG SRC=javascript:alert('XSS')>),
%(<IMG SRC="jav\tascript:alert('XSS');">),
%(<IMG SRC="jav	ascript:alert('XSS');">),
%(<IMG SRC="jav
ascript:alert('XSS');">),
%(<IMG SRC="jav
ascript:alert('XSS');">),
%(<IMG SRC="  javascript:alert('XSS');">),
%(<IMG SRC="javascript:alert('XSS');">),
%(<IMG SRC=`javascript:alert("RSnake says, 'XSS'")`>)].each_with_index do |img_hack, i|
define_method "test_should_not_fall_for_xss_image_hack_#{i+1}" do
assert_sanitized img_hack, "<img>"
end
end
def test_should_sanitize_tag_broken_up_by_null
skip "Pending."
# Loofah parses this to an <scr> tag and removes it.
# So actual is an empty string"
assert_sanitized %(<SCR\0IPT>alert(\"XSS\")</SCR\0IPT>), "alert(\"XSS\")"
end
def test_should_sanitize_invalid_script_tag
assert_sanitized %(<SCRIPT/XSS SRC="http://ha.ckers.org/xss.js"></SCRIPT>), ""
end
def test_should_sanitize_script_tag_with_multiple_open_brackets
skip "Pending."
# Actual: "alert(\"XSS\");//"
assert_sanitized %(<<SCRIPT>alert("XSS");//<</SCRIPT>), "<"
# Actual: ""
assert_sanitized %(<iframe src=http://ha.ckers.org/scriptlet.html\n<a), %(<a)
end
def test_should_sanitize_unclosed_script
assert_sanitized %(<SCRIPT SRC=http://ha.ckers.org/xss.js?<B>), ""
end
def test_should_sanitize_half_open_scripts
assert_sanitized %(<IMG SRC="javascript:alert('XSS')"), "<img>"
end
def test_should_not_fall_for_ridiculous_hack
img_hack = %(<IMG\nSRC\n=\n"\nj\na\nv\na\ns\nc\nr\ni\np\nt\n:\na\nl\ne\nr\nt\n(\n'\nX\nS\nS\n'\n)\n"\n>)
assert_sanitized img_hack, "<img>"
end
def test_should_sanitize_attributes
assert_sanitized %(<SPAN title="'><script>alert()</script>">blah</SPAN>), %(<span title="#{CGI.escapeHTML "'><script>alert()</script>"}">blah</span>)
end
def test_should_sanitize_illegal_style_properties
raw = %(display:block; position:absolute; left:0; top:0; width:100%; height:100%; z-index:1; background-color:black; background-image:url(http://www.ragingplatypus.com/i/cam-full.jpg); background-x:center; background-y:center; background-repeat:repeat;)
expected = %(display: block; width: 100%; height: 100%; background-color: black; background-x: center; background-y: center;)
assert_equal expected, sanitize_css(raw)
end
def test_should_sanitize_with_trailing_space
raw = "display:block; "
expected = "display: block;"
assert_equal expected, sanitize_css(raw)
end
def test_should_sanitize_xul_style_attributes
raw = %(-moz-binding:url('http://ha.ckers.org/xssmoz.xml#xss'))
assert_equal '', sanitize_css(raw)
end
def test_should_sanitize_invalid_tag_names
assert_sanitized(%(a b c<script/XSS src="http://ha.ckers.org/xss.js"></script>d e f), "a b cd e f")
end
def test_should_sanitize_non_alpha_and_non_digit_characters_in_tags
assert_sanitized('<a onclick!#$%&()*~+-_.,:;?@[/|\]^`=alert("XSS")>foo</a>', "<a>foo</a>")
end
def test_should_sanitize_invalid_tag_names_in_single_tags
assert_sanitized('<img/src="http://ha.ckers.org/xss.js"/>', "<img />")
end
def test_should_sanitize_img_dynsrc_lowsrc
assert_sanitized(%(<img lowsrc="javascript:alert('XSS')" />), "<img />")
end
def test_should_sanitize_div_background_image_unicode_encoded
raw = %(background-image:\0075\0072\006C\0028'\006a\0061\0076\0061\0073\0063\0072\0069\0070\0074\003a\0061\006c\0065\0072\0074\0028.1027\0058.1053\0053\0027\0029'\0029)
assert_equal '', sanitize_css(raw)
end
def test_should_sanitize_div_style_expression
raw = %(width: expression(alert('XSS'));)
assert_equal '', sanitize_css(raw)
end
def test_should_sanitize_across_newlines
raw = %(\nwidth:\nexpression(alert('XSS'));\n)
assert_equal '', sanitize_css(raw)
end
def test_should_sanitize_img_vbscript
assert_sanitized %(<img src='vbscript:msgbox("XSS")' />), '<img />'
end
def test_should_sanitize_cdata_section
skip "Pending."
# Expected: "<![CDATA[<span>section</span>]]>"
# Actual: "section]]>"
assert_sanitized "<![CDATA[<span>section</span>]]>", "<![CDATA[<span>section</span>]]>"
end
def test_should_sanitize_unterminated_cdata_section
skip "Pending."
# Expected: "<![CDATA[<span>neverending...]]>"
# Actual: "neverending..."
assert_sanitized "<![CDATA[<span>neverending...", "<![CDATA[<span>neverending...]]>"
end
def test_should_not_mangle_urls_with_ampersand
assert_sanitized %{<a href=\"http://www.domain.com?var1=1&var2=2\">my link</a>}
end
def test_should_sanitize_neverending_attribute
assert_sanitized "<span class=\"\\", "<span class=\"\\\">"
end
def test_x03a
assert_sanitized %(<a href="javascript:alert('XSS');">), "<a>"
assert_sanitized %(<a href="javascript:alert('XSS');">), "<a>"
assert_sanitized %(<a href="http://legit">), %(<a href="http://legit">)
assert_sanitized %(<a href="javascript:alert('XSS');">), "<a>"
assert_sanitized %(<a href="javascript:alert('XSS');">), "<a>"
assert_sanitized %(<a href="http://legit">), %(<a href="http://legit">)
end
protected
def assert_sanitized(input, expected = nil)
@sanitizer ||= ActionView::WhiteListSanitizer.new
if input
assert_dom_equal expected || input, @sanitizer.sanitize(input)
else
assert_nil @sanitizer.sanitize(input)
end
end
def sanitize_css(input)
(@sanitizer ||= ActionView::WhiteListSanitizer.new).sanitize_css(input)
end
end
', %w(..faulty_xpath))
end
end
def test_strip_tags_with_quote
sanitizer = ActionView::FullSanitizer.new
string = '<" hi'
assert_equal ' hi', sanitizer.sanitize(string)
end
def test_strip_tags_pending
skip "Pending. These methods don't pass."
sanitizer = ActionView::FullSanitizer.new
# Loofah doesn't see any elements in this
# Actual: ""
assert_equal("<<"))
# Actual: "Weia onclick='alert(document.cookie);'/>rdos"
assert_equal("Weirdos", sanitizer.sanitize("Wei<a onclick='alert(document.cookie);'/>rdos"))
# Loofah strips newlines.
# Actual: "This is a test.It no longer contains any HTML."
assert_equal(
%{This is a test.\n\n\nIt no longer contains any HTML.\n}, sanitizer.sanitize(
%{This is <b>a <a href="" target="_blank">test</a></b>. \n\n\n\nIt no longer contains any HTML.
\n}))
# Leaves comment text.
# Actual: "This has a comment here."
assert_equal "This has a here.", sanitizer.sanitize("This has a here.")
# Leaves part of a CDATA section
# Actual: "This has a ]]> here."
assert_equal "This has a here.", sanitizer.sanitize("This has a ]]> here.")
# Actual: "This has an unclosed ]] here..."
assert_equal "This has an unclosed ", sanitizer.sanitize("This has an unclosed ]] here...")
# Fails on the blank string.
# Actual: ''
[nil, '', ' '].each { |blank| assert_equal blank, sanitizer.sanitize(blank) }
end
def test_strip_tags
sanitizer = ActionView::FullSanitizer.new
assert_equal("Dont touch me", sanitizer.sanitize("Dont touch me"))
assert_equal("This is a test.", sanitizer.sanitize("This is a test.
"))
assert_equal("This is a test.", sanitizer.sanitize("This is a test."))
assert_equal "This has a here.", sanitizer.sanitize("This has a here.")
assert_nothing_raised { sanitizer.sanitize("This is a frozen string with no tags".freeze) }
end
def test_strip_links_pending
skip "Pending. Extracted from test_strip_links."
sanitizer = ActionView::LinkSanitizer.new
# Only one of the a-tags are parsed here
# Actual: "a href='hello'>all day long/a>"
assert_equal "all day long", sanitizer.sanitize("<a href='hello'>all day long</a>")
# Loofah reads this as '' which the LinkSanitizer removes
# Actual: ""
assert_equal "on my mind\nall day long")
assert_equal "0wn3d", sanitizer.sanitize("0wn3d")
assert_equal "Magic", sanitizer.sanitize("Magic")
assert_equal "FrrFox", sanitizer.sanitize("FrrFox ")
assert_equal "My mind\nall day long", sanitizer.sanitize("My mind\nall day long")
end
def test_sanitize_form
assert_sanitized "", ''
end
def test_sanitize_plaintext
raw = "<span>foo</span></plaintext>"
assert_sanitized raw, "<span>foo</span>"
end
def test_sanitize_script
assert_sanitized "a b c<script language=\"Javascript\">blah blah blah</script>d e f", "a b cd e f"
end
def test_sanitize_js_handlers
raw = %{onthis="do that" <a href="#" onclick="hello" name="foo" onbogus="remove me">hello</a>}
assert_sanitized raw, %{onthis="do that" <a href="#" name="foo">hello</a>}
end
def test_sanitize_javascript_href
raw = %{href="javascript:bang" <a href="javascript:bang" name="hello">foo</a>, <span href="javascript:bang">bar</span>}
assert_sanitized raw, %{href="javascript:bang" <a name="hello">foo</a>, <span>bar</span>}
end
def test_sanitize_image_src
raw = %{src="javascript:bang" <img src="javascript:bang" width="5">foo</img>, <span src="javascript:bang">bar</span>}
assert_sanitized raw, %{src="javascript:bang" <img width="5">foo</img>, <span>bar</span>}
end
ActionView::WhiteListSanitizer.allowed_tags.each do |tag_name|
define_method "test_should_allow_#{tag_name}_tag" do
assert_sanitized "start <#{tag_name} title=\"1\" onclick=\"foo\">foo <bad>bar</bad> baz</#{tag_name}> end", %(start <#{tag_name} title="1">foo bar baz</#{tag_name}> end)
end
end
def test_should_allow_anchors
assert_sanitized %(<a href="foo" onclick="bar"><script>baz</script></a>), %(<a href=\"foo\">baz</a>)
end
def test_video_poster_sanitization
assert_sanitized %(<video src="videofile.ogg" autoplay poster="posterimage.jpg"></video>), %(<video src="videofile.ogg" poster="posterimage.jpg"></video>)
assert_sanitized %(<video src="videofile.ogg" poster=javascript:alert(1)></video>), %(<video src="videofile.ogg"></video>)
end
# RFC 3986, sec 4.2
def test_allow_colons_in_path_component
assert_sanitized("<a href=\"./this:that\">foo</a>")
end
%w(src width height alt).each do |img_attr|
define_method "test_should_allow_image_#{img_attr}_attribute" do
assert_sanitized %(<img #{img_attr}="foo" onclick="bar" />), %(<img #{img_attr}="foo" />)
end
end
def test_should_handle_non_html
assert_sanitized 'abc'
end
def test_should_handle_blank_text
assert_sanitized nil
assert_sanitized ''
end
def test_should_allow_custom_tags
text = "<u>foo</u>"
sanitizer = ActionView::WhiteListSanitizer.new
assert_equal(text, sanitizer.sanitize(text, :tags => %w(u)))
end
def test_should_allow_only_custom_tags
text = "<u>foo</u> with <i>bar</i>"
sanitizer = ActionView::WhiteListSanitizer.new
assert_equal("<u>foo</u> with bar", sanitizer.sanitize(text, :tags => %w(u)))
end
def test_should_allow_custom_tags_with_attributes
text = %(<blockquote cite="http://example.com/">foo</blockquote>)
sanitizer = ActionView::WhiteListSanitizer.new
assert_equal(text, sanitizer.sanitize(text))
end
def test_should_allow_custom_tags_with_custom_attributes
text = %(<blockquote foo="bar">Lorem ipsum</blockquote>)
sanitizer = ActionView::WhiteListSanitizer.new
assert_equal(text, sanitizer.sanitize(text, :attributes => ['foo']))
end
def test_should_raise_argument_error_if_tags_is_not_enumerable
sanitizer = ActionView::WhiteListSanitizer.new
e = assert_raise(ArgumentError) do
sanitizer.sanitize('', :tags => 'foo')
end
assert_equal "You should pass :tags as an Enumerable", e.message
end
def test_should_raise_argument_error_if_attributes_is_not_enumerable
sanitizer = ActionView::WhiteListSanitizer.new
e = assert_raise(ArgumentError) do
sanitizer.sanitize('', :attributes => 'foo')
end
assert_equal "You should pass :attributes as an Enumerable", e.message
end
def test_should_not_accept_non_loofah_inheriting_scrubber
sanitizer = ActionView::WhiteListSanitizer.new
scrubber = Object.new
scrubber.class_eval do
def scrub(node); node.name = 'h1'; end
end
assert_raise Loofah::ScrubberNotFound do
sanitizer.sanitize('', :scrubber => scrubber)
end
end
def test_should_accept_loofah_inheriting_scrubber
sanitizer = ActionView::WhiteListSanitizer.new
scrubber = Loofah::Scrubber.new
scrubber.class_eval do
def scrub(node); node.name = 'h1'; end
end
html = "<script>hello!</script>"
assert_equal "<h1>hello!</h1>", sanitizer.sanitize(html, :scrubber => scrubber)
end
def test_should_accept_loofah_scrubber_that_wraps_a_block
sanitizer = ActionView::WhiteListSanitizer.new
scrubber = Loofah::Scrubber.new { |node| node.name = 'h1' }
html = "<script>hello!</script>"
assert_equal "<h1>hello!</h1>", sanitizer.sanitize(html, :scrubber => scrubber)
end
def test_custom_scrubber_takes_precedence_over_other_options
sanitizer = ActionView::WhiteListSanitizer.new
scrubber = Loofah::Scrubber.new { |node| node.name = 'h1' }
html = "<script>hello!</script>"
assert_equal "<h1>hello!</h1>", sanitizer.sanitize(html, :scrubber => scrubber, :tags => ['foo'])
end
[%w(img src), %w(a href)].each do |(tag, attr)|
define_method "test_should_strip_#{attr}_attribute_in_#{tag}_with_bad_protocols" do
assert_sanitized %(<#{tag} #{attr}="javascript:bang" title="1">boo</#{tag}>), %(<#{tag} title="1">boo</#{tag}>)
end
end
def test_should_block_script_tag
assert_sanitized %(<SCRIPT\nSRC=http://ha.ckers.org/xss.js></SCRIPT>), ""
end
def test_should_not_fall_for_xss_image_hack_pending
skip "Pending."
# Actual: "<img>alert(\"XSS\")\">"
assert_sanitized %(<IMG """><SCRIPT>alert("XSS")</SCRIPT>">), "<img>"
end
[%(<IMG SRC="javascript:alert('XSS');">),
%(<IMG SRC=javascript:alert('XSS')>),
%(<IMG SRC=JaVaScRiPt:alert('XSS')>),
%(<IMG SRC=javascript:alert("XSS")>),
%(<IMG SRC=javascript:alert(String.fromCharCode(88,83,83))>),
%(<IMG SRC=javascript:alert('XSS')>),
%(<IMG SRC=javascript:alert('XSS')>),
%(<IMG SRC=javascript:alert('XSS')>),
%(<IMG SRC="jav\tascript:alert('XSS');">),
%(<IMG SRC="jav	ascript:alert('XSS');">),
%(<IMG SRC="jav
ascript:alert('XSS');">),
%(<IMG SRC="jav
ascript:alert('XSS');">),
%(<IMG SRC="  javascript:alert('XSS');">),
%(<IMG SRC="javascript:alert('XSS');">),
%(<IMG SRC=`javascript:alert("RSnake says, 'XSS'")`>)].each_with_index do |img_hack, i|
define_method "test_should_not_fall_for_xss_image_hack_#{i+1}" do
assert_sanitized img_hack, "<img>"
end
end
def test_should_sanitize_tag_broken_up_by_null
skip "Pending."
# Loofah parses this to an <scr> tag and removes it.
# So actual is an empty string"
assert_sanitized %(<SCR\0IPT>alert(\"XSS\")</SCR\0IPT>), "alert(\"XSS\")"
end
def test_should_sanitize_invalid_script_tag
assert_sanitized %(<SCRIPT/XSS SRC="http://ha.ckers.org/xss.js"></SCRIPT>), ""
end
def test_should_sanitize_script_tag_with_multiple_open_brackets
skip "Pending."
# Actual: "alert(\"XSS\");//"
assert_sanitized %(<<SCRIPT>alert("XSS");//<</SCRIPT>), "<"
# Actual: ""
assert_sanitized %(<iframe src=http://ha.ckers.org/scriptlet.html\n<a), %(<a)
end
def test_should_sanitize_unclosed_script
assert_sanitized %(<SCRIPT SRC=http://ha.ckers.org/xss.js?<B>), ""
end
def test_should_sanitize_half_open_scripts
assert_sanitized %(<IMG SRC="javascript:alert('XSS')"), "<img>"
end
def test_should_not_fall_for_ridiculous_hack
img_hack = %(<IMG\nSRC\n=\n"\nj\na\nv\na\ns\nc\nr\ni\np\nt\n:\na\nl\ne\nr\nt\n(\n'\nX\nS\nS\n'\n)\n"\n>)
assert_sanitized img_hack, "<img>"
end
def test_should_sanitize_attributes
assert_sanitized %(<SPAN title="'><script>alert()</script>">blah</SPAN>), %(<span title="#{CGI.escapeHTML "'><script>alert()</script>"}">blah</span>)
end
def test_should_sanitize_illegal_style_properties
raw = %(display:block; position:absolute; left:0; top:0; width:100%; height:100%; z-index:1; background-color:black; background-image:url(http://www.ragingplatypus.com/i/cam-full.jpg); background-x:center; background-y:center; background-repeat:repeat;)
expected = %(display: block; width: 100%; height: 100%; background-color: black; background-x: center; background-y: center;)
assert_equal expected, sanitize_css(raw)
end
def test_should_sanitize_with_trailing_space
raw = "display:block; "
expected = "display: block;"
assert_equal expected, sanitize_css(raw)
end
def test_should_sanitize_xul_style_attributes
raw = %(-moz-binding:url('http://ha.ckers.org/xssmoz.xml#xss'))
assert_equal '', sanitize_css(raw)
end
def test_should_sanitize_invalid_tag_names
assert_sanitized(%(a b c<script/XSS src="http://ha.ckers.org/xss.js"></script>d e f), "a b cd e f")
end
def test_should_sanitize_non_alpha_and_non_digit_characters_in_tags
assert_sanitized('<a onclick!#$%&()*~+-_.,:;?@[/|\]^`=alert("XSS")>foo</a>', "<a>foo</a>")
end
def test_should_sanitize_invalid_tag_names_in_single_tags
assert_sanitized('<img/src="http://ha.ckers.org/xss.js"/>', "<img />")
end
def test_should_sanitize_img_dynsrc_lowsrc
assert_sanitized(%(<img lowsrc="javascript:alert('XSS')" />), "<img />")
end
def test_should_sanitize_div_background_image_unicode_encoded
raw = %(background-image:\0075\0072\006C\0028'\006a\0061\0076\0061\0073\0063\0072\0069\0070\0074\003a\0061\006c\0065\0072\0074\0028.1027\0058.1053\0053\0027\0029'\0029)
assert_equal '', sanitize_css(raw)
end
def test_should_sanitize_div_style_expression
raw = %(width: expression(alert('XSS'));)
assert_equal '', sanitize_css(raw)
end
def test_should_sanitize_across_newlines
raw = %(\nwidth:\nexpression(alert('XSS'));\n)
assert_equal '', sanitize_css(raw)
end
def test_should_sanitize_img_vbscript
assert_sanitized %(<img src='vbscript:msgbox("XSS")' />), '<img />'
end
def test_should_sanitize_cdata_section
skip "Pending."
# Expected: "<![CDATA[<span>section</span>]]>"
# Actual: "section]]>"
assert_sanitized "<![CDATA[<span>section</span>]]>", "<![CDATA[<span>section</span>]]>"
end
def test_should_sanitize_unterminated_cdata_section
skip "Pending."
# Expected: "<![CDATA[<span>neverending...]]>"
# Actual: "neverending..."
assert_sanitized "<![CDATA[<span>neverending...", "<![CDATA[<span>neverending...]]>"
end
def test_should_not_mangle_urls_with_ampersand
assert_sanitized %{<a href=\"http://www.domain.com?var1=1&var2=2\">my link</a>}
end
def test_should_sanitize_neverending_attribute
assert_sanitized "<span class=\"\\", "<span class=\"\\\">"
end
def test_x03a
assert_sanitized %(<a href="javascript:alert('XSS');">), "<a>"
assert_sanitized %(<a href="javascript:alert('XSS');">), "<a>"
assert_sanitized %(<a href="http://legit">), %(<a href="http://legit">)
assert_sanitized %(<a href="javascript:alert('XSS');">), "<a>"
assert_sanitized %(<a href="javascript:alert('XSS');">), "<a>"
assert_sanitized %(<a href="http://legit">), %(<a href="http://legit">)
end
protected
def assert_sanitized(input, expected = nil)
@sanitizer ||= ActionView::WhiteListSanitizer.new
if input
assert_dom_equal expected || input, @sanitizer.sanitize(input)
else
assert_nil @sanitizer.sanitize(input)
end
end
def sanitize_css(input)
(@sanitizer ||= ActionView::WhiteListSanitizer.new).sanitize_css(input)
end
end
It no longer contains any HTML.
This is a test.
")) assert_equal("This is a test.", sanitizer.sanitize("This is a test.")) assert_equal "This has a here.", sanitizer.sanitize("This has a here.") assert_nothing_raised { sanitizer.sanitize("This is a frozen string with no tags".freeze) } end def test_strip_links_pending skip "Pending. Extracted from test_strip_links." sanitizer = ActionView::LinkSanitizer.new # Only one of the a-tags are parsed here # Actual: "a href='hello'>all day long/a>" assert_equal "all day long", sanitizer.sanitize("<a href='hello'>all day long</a>") # Loofah reads this as '' which the LinkSanitizer removes # Actual: "" assert_equal "