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package com.android.mail.utils;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.SmallTest;
/**
* These test cases verify the handling of more advanced cross-site scripting attacks.
*/
@SmallTest
public class AdvancedHtmlSanitizerTest extends AndroidTestCase {
public void testSampleEmail() {
sanitize("<html>\n" +
"<head>\n" +
"<title>HTML E-mail</title>\n" +
"<script>\n" +
"alert(\"I am an alert box!\");\n" +
"</script>\n" +
"</head>\n" +
"<body>\n" +
"Body here\n" +
"<br />\n" +
"<a href=\"http://www.google.com\">Link to Google Search!</a>\n" +
"<br />\n" +
"<br />\n" +
"<a onclick=\"alert('surprise!')\" href=\"#\">I am a link!</a>\n" +
"<br />\n" +
"Moar body here\n" +
"</body>\n" +
"</html>"
,
"\n" +
"\n" +
"\n" +
"\n" +
"\n" +
"<div>\n" +
"Body here\n" +
"<br />\n" +
"<a href=\"http://www.google.com\">Link to Google Search!</a>\n" +
"<br />\n" +
"<br />\n" +
"<a href=\"#\">I am a link!</a>\n" +
"<br />\n" +
"Moar body here\n" +
"</div>\n");
}
public void testXSS() {
sanitize("'';!--\"<XSS>=&{()}", "'';!--"=&{()}");
sanitize("<img src=javascript:alert(String.fromCharCode(88,83,83))>", "");
sanitize("\\\";alert('XSS');//", "\\";alert('XSS');//");
sanitize("<br size=\"&{alert('XSS')}\">", "<br />");
sanitize("<xss style=\"xss:expression(alert('XSS'))\">", "");
sanitize("<xss style=\"behavior: url(xss.htc);\">", "");
sanitize("¼script¾alert(¢XSS¢)¼/script¾", "¼script¾alert(¢XSS¢)¼/script¾");
sanitize("<xml><i><b><img src=\"javas<!-- -->cript:alert('XSS')\"></b></i></xml>",
"<i><b></b></i>");
sanitize("<xml src=\"xsstest.xml\" id=I></xml>", "");
sanitize("<!--[if gte IE 4]>\n" +
" <SCRIPT>alert('XSS');</SCRIPT>\n" +
" <![endif]-->", "");
sanitize("<body>\n" +
"<?xml:namespace prefix=\"t\" ns=\"urn:schemas-microsoft-com:time\">\n" +
"<?import namespace=\"t\" implementation=\"#default#time2\">\n" +
"<t:set attributeName=\"innerHTML\" to=\"XSS<script defer>alert(\"XSS\")" +
"</script>\">\n" +
"</body></html>",
"<div>\n" +
"\n" +
"\n" +
"">\n" +
"</div>");
}
/**
* Technically, RFC 2392 doesn't limit where CID urls may appear; they are accepted everywhere.
*/
public void testCIDurls() {
sanitize("<img src=\"http://www.here.com/awesome.png\"/>",
"<img src=\"http://www.here.com/awesome.png\" />");
sanitize("<img src=\"https://www.here.com/awesome.png\"/>",
"<img src=\"https://www.here.com/awesome.png\" />");
sanitize("<img src=\"cid:ii_145bda161daf6f9c\"/>",
"<img src=\"cid:ii_145bda161daf6f9c\" />");
sanitize("<a href=\"http://www.here.com/awesome.png\"/>",
"<a href=\"http://www.here.com/awesome.png\"></a>");
sanitize("<a href=\"https://www.here.com/awesome.png\"/>",
"<a href=\"https://www.here.com/awesome.png\"></a>");
sanitize("<a href=\"cid:ii_145bda161daf6f9c\"/>",
"<a href=\"cid:ii_145bda161daf6f9c\"></a>");
}
// todo the stock CssSchema in OWASP does NOT allow the float property; I experiment with adding
// todo it to see how much it beautifies HTML display (the risk seems to be that you can display
// todo content outside the bounds of your div and mislead the user with this technique)
public void testCSS_float() {
sanitize("<div style=\"float:none\"></div>", "<div style=\"float:none\"></div>");
sanitize("<div style=\"float:left\"></div>", "<div style=\"float:left\"></div>");
sanitize("<div style=\"float:right\"></div>", "<div style=\"float:right\"></div>");
sanitize("<div style=\"float:inherit\"></div>", "<div style=\"float:inherit\"></div>");
sanitize("<div style=\"float:initial\"></div>", "<div></div>");
sanitize("<div style=\"float:garbage\"></div>", "<div></div>");
}
// todo the stock CssSchema in OWASP does NOT allow the display property; I experiment with
// todo adding it to see how much it beautifies HTML display (the risk seems to be that you can
// todo display content outside the bounds of your div and mislead the user with this technique)
public void testCSS_display() {
sanitize("<div style=\"display:inline\"></div>", "<div style=\"display:inline\"></div>");
sanitize("<div style=\"display:block\"></div>", "<div style=\"display:block\"></div>");
sanitize("<div style=\"display:flex\"></div>", "<div></div>");
sanitize("<div style=\"display:inline-block\"></div>",
"<div style=\"display:inline-block\"></div>");
sanitize("<div style=\"display:inline-flex\"></div>", "<div></div>");
sanitize("<div style=\"display:inline-table\"></div>",
"<div style=\"display:inline-table\"></div>");
sanitize("<div style=\"display:list-item\"></div>",
"<div style=\"display:list-item\"></div>");
sanitize("<div style=\"display:run-in\"></div>", "<div style=\"display:run-in\"></div>");
sanitize("<div style=\"display:table\"></div>", "<div style=\"display:table\"></div>");
sanitize("<div style=\"display:table-caption\"></div>",
"<div style=\"display:table-caption\"></div>");
sanitize("<div style=\"display:table-column-group\"></div>",
"<div style=\"display:table-column-group\"></div>");
sanitize("<div style=\"display:table-header-group\"></div>",
"<div style=\"display:table-header-group\"></div>");
sanitize("<div style=\"display:table-footer-group\"></div>",
"<div style=\"display:table-footer-group\"></div>");
sanitize("<div style=\"display:table-row-group\"></div>",
"<div style=\"display:table-row-group\"></div>");
sanitize("<div style=\"display:table-cell\"></div>",
"<div style=\"display:table-cell\"></div>");
sanitize("<div style=\"display:table-column\"></div>",
"<div style=\"display:table-column\"></div>");
sanitize("<div style=\"display:table-row\"></div>",
"<div style=\"display:table-row\"></div>");
sanitize("<div style=\"display:none\"></div>", "<div style=\"display:none\"></div>");
sanitize("<div style=\"display:initial\"></div>", "<div></div>");
sanitize("<div style=\"display:inherit\"></div>", "<div style=\"display:inherit\"></div>");
}
public void testTrimmingUrls() {
// todo Gmail strips the leading space on this href
// sanitize("<a href=\"http://www.google.com \">Send mail</a>",
// "<a href=\"http://www.google.com\">Send mail</a>");
sanitize("<a href=\" http://www.google.com\">Send mail</a>", "Send mail");
// todo Gmail strips the trailing space on this href
// sanitize("<a href=\"http://www.google.com \">Send mail</a> ",
// "<a href=\"http://www.google.com\">Send mail</a>");
sanitize("<a href=\"http://www.google.com \">Send mail</a>",
"<a href=\"http://www.google.com \">Send mail</a>");
// todo Gmail strips the leading and trailing spaces on this href
// sanitize("<a href=\" http://www.google.com \">Send mail</a> ",
// "<a href=\"http://www.google.com\">Send mail</a>");
sanitize("<a href=\" http://www.google.com \">Send mail</a>", "Send mail");
}
public void testDangerousHtml() {
// body tag is translated to div tag
sanitize("<body dir=\"rtl\" onMouseOVer=\"alert(document.cookie)\">arr</body>",
"<div dir=\"rtl\">arr</div>");
sanitize("<DIV ONCLICK=alert(document.cookie) style=color:red>arr</DIV>",
"<div style=\"color:red\">arr</div>");
sanitize("<b style=position:absolute;left:0;top:0>arr</b>", "<b>arr</b>");
// mailto: URLs on images are too easy to turn into DOS attacks
sanitize("<img src=\"mailto:\">", "");
sanitize("<img src=\"mailto:hcnidumolu@google.com\">", "");
sanitize("<img src=\"mailto:hcnidumolu@google.com\">", "");
sanitize("<img src=\" mailto:hcnidumolu@google.com\">", "");
sanitize("<img src=\"mailto:hcnidumolu@google.com\">", "");
sanitize("<img src=\"m
ailto:hcnidumolu@google.com\">", "");
// todo Gmail doesn't escape the @ sign; OWASP does by default
// sanitize("<a href=\"mailto:hcnidumolu@google.com\">Send mail </a>",
// "<a href=\"mailto:hcnidumolu@google.com\">Send mail </a>");
sanitize("<a href=\"mailto:hcnidumolu@google.com\">Send mail </a>",
"<a href=\"mailto:hcnidumolu@google.com\">Send mail </a>");
}
public void testSanitizingImgsWithoutSchemes() {
sanitize("<img src=\"//images1-gm-opensocial.googleusercontent.com/gadgets/proxy?" +
"url=http://foo.bar/baz.png&container=gm&gadget=a&rewriteMime=image/*\">",
// "<img src=\"//images1-gm-opensocial.googleusercontent.com/gadgets/proxy?" +
// "url=http://foo.bar/baz.png&container=gm&gadget=" +
// "a&rewriteMime=image/*\">"); // todo Gmail doesn't escape the = signs
"<img src=\"//images1-gm-opensocial.googleusercontent.com/gadgets/proxy?" +
"url=http://foo.bar/baz.png&container=gm&gadget=" +
"a&rewriteMime=image/*\" />");
}
public void testAdditionalURISchemes() {
// todo Gmail keeps a destinationless link; OWASP strips the a link completely
// sanitize("<a href=\"foo:bar\" target=\"_blank\">link1</a>", "<a>link1</a>");
sanitize("<a href=\"foo:bar\" target=\"_blank\">link1</a>", "link1");
// todo Gmail keeps a destinationless a link; OWASP strips the a link completely
// sanitize("<a href=\"baz:alanbs@google.com\">link2</a>", "<a>link2</a>");
sanitize("<a href=\"baz:alanbs@google.com\">link2</a>", "link2");
}
public void testBackgroundAttribute() {
sanitize("<div background=\"http://www.random.org/png\">stuff</div><div>more stuff</div>",
"<div background=\"http://www.random.org/png\">stuff</div><div>more stuff</div>");
}
public void testInputImage() {
sanitize("<input type=\"image\" src=\"http://random.org/png\">",
"<input type=\"image\" src=\"http://random.org/png\" />");
}
public void testImplicitInputImage() {
// In HTML 4.01, src attribute has meaning only when type="image" (which
// is not the default), but this happens in real life.
sanitize("<input src=\"http://random.org/png\">",
"<input src=\"http://random.org/png\" />");
}
public void testSerialization() {
// N.B. (literal) newlines must not occur in CSS strings.
// todo Gmail leaves this CSS style in place and escapes it; OWASP removes it all
// sanitize("<a href=\"http://www.google.com\" style=\"font-family: 'expression; " +
// "\\a color:red;\\a font-family: completely unsanitized =(;' ;\">asdf</a>",
// "<a href=\"http://www.google.com\" style=\"font-family:'expression; " +
// "\\00000acolor:red;\\00000afont-family: completely unsanitized " +
// "=(;'\">asdf</a>");
sanitize("<a href=\"http://www.google.com\" style=\"font-family: 'expression; " +
"\\a color:red;\\a font-family: completely unsanitized =(;' ;\">asdf</a>",
"<a href=\"http://www.google.com\">asdf</a>");
}
public void testNoJS() {
// todo Gmail leaves this CSS in place and escapes it; OWASP removes it all
// sanitize("<a href=\"http://www.google.com\" style=\"background-image: " +
// "url('javascript:alert(1)')\"></a>",
// "<a href=\"http://www.google.com\" style=\"background-image:" +
// "url('')\"></a>");
sanitize("<a href=\"http://www.google.com\" style=\"background-image: " +
"url('javascript:alert(1)')\"></a>",
"<a href=\"http://www.google.com\"></a>");
}
public void testNoStyleElementByDefault() {
sanitize("<head><style type='text/css'>verboten { color: red; }</style></head>" +
"<body><p>test</p>",
"<div><p>test</p></div>");
}
public void testMessageFormation() {
sanitize("<table><tr><td><b>This is a simple message</b></td></tr></table>",
"<table><tr><td><b>This is a simple message</b></td></tr></table>");
sanitize("<table><tr><td><b>This is a simple message",
"<table><tr><td><b>This is a simple message</b></td></tr></table>");
sanitize("<table><tr>This is a simple message</b></td></tr></table>",
"<table><tr><td>This is a simple message</td></tr></table>");
sanitize("This is a simple message</b></td></tr></table>", "This is a simple message");
}
public void testViolatingTags() {
sanitize("<html><head><title>html to ruin your site</title>"
+ "<meta http-equiv=\"refresh\" content=\"5\" />"
+ "<link rel=\"stylesheet\" type=\"text/css\" href=\"some site\"/>"
+ "<style type=\"text/css\"> h1 {color: red}</style>"
+ "</head><body><script>some script to run</script>"
+ "<noscript>Please enable Javascript and reload this page."
+ "Good things abound!</noscript>"
+ "<noframes>This page requires frames!</noframes>"
+ "<frameset cols = \"25%, 25%,*\">"
+ "<frame src=\"site1.htm\" />"
+ "<frame src=\"site2.htm\" />"
+ "<frame src=\"site3.htm\" /> "
+ "</frameset>"
+ "<table><tr><td>"
+ "Execute this <applet code=\"some evil site\"></td>"
+ "</tr></table></body></html>"
,
"<div>"
+ "<table><tr><td>"
+ "Execute this </td>"
+ "</tr></table></div>"
);
sanitize("Include this:<br/>"
+ "<object classid=\"clsid:FOOBAR\" id=\"Slider1\""
+ "declare=\"declare\">"
+ "<param name=\"some param\" value=\"1\" />"
+ "</object><br/>"
+ "<form method=\"POST\" action=\"http://www.somesite.com\""
+ "onsubmit=\"run some script\">"
+ "<input type=\"text\" onclick=\"run some script\" id=\"input\"/>"
+ "<input type=\"submit\" onfocus=\"run some script\" value=\"submit\"/>"
+ "</form>"
,
"Include this:<br />"
+ "<br />"
+ "<form method=\"POST\" action=\"http://www.somesite.com\">"
+ "<input type=\"text\" />"
+ "<input type=\"submit\" value=\"submit\" />"
+ "</form>"
);
}
public void testLinks() {
sanitize("<a href=\"http://www.somesite.com\" target=\"_self\" "
+ "onclick=\"run some script\" onmouseover=\"run some script\">"
+ "click here</a>"
+ "<a href=\"javascript:run some script\">here</a>"
+ "<a href=\"someinternalpage.htm\">or here</a>"
,
"<a href=\"http://www.somesite.com\">"
+ "click here</a>"
+ "here"
+ "<a href=\"someinternalpage.htm\">or here</a>"
);
}
public void testExternalLinks() {
sanitize("This is a test <a href=http://google.com>here</a> "
+ "<img src=\"http://google.com/bogus.jpg\">"
+ "<img src=\"//google.com/bogus2.jpg\">"
+ "<img src=\"google.com/bogus3.jpg\">"
+ "<script>Hello</script> "
+ "<frameset><frame src=foo name=onlyFrame>hey</frame></frameset>"
,
"This is a test <a href=\"http://google.com\">here</a> "
+ "<img src=\"http://google.com/bogus.jpg\" />"
+ "<img src=\"//google.com/bogus2.jpg\" />"
+ "<img src=\"google.com/bogus3.jpg\" /> "
);
}
public void testNewHtmlWhitelist() {
sanitize("<a href=http://google.com/boguslink>link</a>"
+ "<b>BOLD</b>"
+ "<i>italics</i>"
+ "<u>underlined</u>"
+ "<br/>break<br>break"
+ "<font size=+1>Big_font_gone</font>"
,
"<a href=\"http://google.com/boguslink\">link</a>"
+ "<b>BOLD</b>"
+ "<i>italics</i>"
+ "<u>underlined</u>"
+ "<br />break<br />break"
+ "<font size=\"+1\">Big_font_gone</font>"
);
}
public void testRemoveBackticksInAttributes() {
// IE treats backticks as quotes when re-serializing, but not when parsing
sanitize("<img alt=\"``onload=alert(1)\">",
"<img alt=\"``onload=alert(1) \" />");
sanitize("<img alt=\"'``onload=alert(1)'\">",
"<img alt=\"'``onload=alert(1)' \" />");
sanitize("<img alt=``onload=alert(1)\">", "<img alt=\"``onload=alert(1) \" />");
// Make sure we're not fooled by escaped backticks
sanitize("<img alt=\"``onload=alert(1)\">",
"<img alt=\"``onload=alert(1) \" />");
sanitize("<img alt=\"``onload=alert(1)\">",
"<img alt=\"``onload=alert(1) \" />");
// Misc. dangerous cases:
sanitize("<img alt=`x`onload=alert(1)>", "<img alt=\"`x`onload=alert(1) \" />");
sanitize("<img alt=foo`x`onload=alert(1)>",
"<img alt=\"foo`x`onload=alert(1) \" />");
sanitize("<img alt=\"`whatever\">Hello world ` onload=alert(1) <br>",
"<img alt=\"`whatever \" />Hello world ` onload=alert(1) <br />");
// The tokenizer doesn't see these as entities because they lack a trailing semicolon, so it
// escapes the leading ampersands.
sanitize("<img alt=\"``onload=alert(1)\">",
"<img alt=\"`&#x000060onload=alert(1) \" />");
// Here there are no actual backticks, though there would be if we (or IE) did repeated
// unescaping.
sanitize("<img alt=\"&#x000060&#x000060onload=alert(2)\">",
"<img alt=\"&#x000060&#x000060onload=alert(2)\" />");
sanitize("<img alt=\"&amp;#x000060&amp;#x000060onload=alert(2)\">",
"<img alt=\"&amp;#x000060&amp;#x000060onload=alert(2)\" />");
}
public void testMakeSafeStyle() {
sanitize("<div style=\"color:red\"></div>", "<div style=\"color:red\"></div>");
sanitize("<div style=\"color:r\\ne\\t d d\\r\\n\"></div>", "<div></div>");
sanitize("<div style=\"font-size:13.5pt; color:#804000 \"></div>",
"<div style=\"font-size:13.5pt;color:#804000\"></div>");
sanitize("<div style=\"color:red;color\"></div>", "<div style=\"color:red\"></div>");
sanitize("<div style=\"color:red;color:a:b\"></div>", "<div style=\"color:red\"></div>");
sanitize("<div style=\"color:url(foo)\"></div>", "<div></div>");
sanitize("<div style=\"color:white; list-style:url(foo.gif);\"></div>",
"<div style=\"color:white\"></div>");
sanitize("<div style=\"color:rgb(255, 0, 0)\"></div>",
"<div style=\"color:rgb( 255 , 0 , 0 )\"></div>");
sanitize("<div style=\"background-color:rgb(80%,92%,18%)\"></div>",
"<div style=\"background-color:rgb( 80% , 92% , 18% )\"></div>");
sanitize("<div style=\"border-left:1px rgb(0,255,0) solid\"></div>",
"<div style=\"border-left:1px rgb( 0 , 255 , 0 ) solid\"></div>");
sanitize("<div style=\"background:rgb(0,255,0) url(foo) no-repeat top\"></div>",
"<div style=\"background:rgb( 0 , 255 , 0 ) no-repeat top\"></div>");
sanitize("<div style=\"display:none; border-color: #ffeeff \"></div>",
"<div style=\"display:none;border-color:#ffeeff\"></div>");
// check for CSS3 border-radius
sanitize("<div style=\"border-radius:10px\"></div>",
"<div style=\"border-radius:10px\"></div>");
sanitize("<div style=\"border-bottom-left-radius:10px\"></div>",
"<div style=\"border-bottom-left-radius:10px\"></div>");
sanitize("<div style=\"border-bottom-right-radius:10px\"></div>",
"<div style=\"border-bottom-right-radius:10px\"></div>");
sanitize("<div style=\"border-top-left-radius:10px\"></div>",
"<div style=\"border-top-left-radius:10px\"></div>");
sanitize("<div style=\"border-top-right-radius:10px\"></div>",
"<div style=\"border-top-right-radius:10px\"></div>");
// allow positive margins
sanitize("<div style=\"margin:10 0 10 0\"></div>",
"<div style=\"margin:10 0 10 0\"></div>");
sanitize("<div style=\"margin-left:40px\"></div>",
"<div style=\"margin-left:40px\"></div>");
// negative margin would allow it to slip out of the box
sanitize("<div style=\"margin-left:-10\"></div>", "<div></div>");
// allow positive text-ident
sanitize("<div style=\"text-indent:10\"></div>", "<div style=\"text-indent:10\"></div>");
sanitize("<div style=\"text-indent:0\"></div>", "<div style=\"text-indent:0\"></div>");
// todo Gmail disallows negative text-indents; OWASP is fine with them
// negative text-indent would allow it to slip out of the box
// sanitize("<div style=\"text-indent:-10\"></div>", "<div></div>");
sanitize("<div style=\"text-indent:-10\"></div>", "<div style=\"text-indent:-10\"></div>");
}
public void testMakeSafeStyleWithQuotedStrings() {
sanitize("<div style=\"font-family:'courier new',monospace;font-size:x-small\"></div>",
"<div style=\"font-family:'courier new' , monospace;font-size:x-small\">" +
"</div>");
sanitize("<div style=\"font-family:\"courier new\",monospace\"></div>", "<div></div>");
sanitize("<div style=\"font-family:''\"></div>", "<div></div>");
sanitize("<div style=\"font-family:a,''\"></div>",
"<div style=\"font-family:'a' ,\"></div>");
sanitize("<div style=\"font-family:'',a,\"\",b\"></div>",
"<div style=\"font-family:, 'a' ,\"></div>");
sanitize("<div style=\"font-family:'\"></div>", "<div></div>");
sanitize("<div style=\"font-family: 'courier new\",monospace;'\"></div>", "<div></div>");
sanitize("<div style=\"font-family: \"courier new',monospace;\"></div>", "<div></div>");
}
public void testSeriouslyNoBackgroundImages() {
sanitize("<div style=\"background:url('http://www.here.com/awesome.png')\"></div>",
"<div></div>");
sanitize("<div style=\"background-image:url('http://www.here.com/awesome.png')\"></div>",
"<div></div>");
sanitize("<div style=\"background:url('javascript:evil()')\"></div>", "<div></div>");
sanitize("<div style=\"background-image:url('javascript:evil()')\"></div>", "<div></div>");
}
public void testExpression() {
sanitize("<div style=\"width: expression(alert(1))\"></div>", "<div></div>");
}
public void testStrayUrlConsideredHarmful() {
sanitize("<div style=\"float:url(\"></div>", "<div></div>");
sanitize("<div style=\"float:\\075\\0072\\006C\\0028\"></div>", "<div></div>");
}
public void testObjectionableFunctions() {
sanitize("<div style=\"ex\\pression(123)\"></div>", "<div></div>");
sanitize("<div style=\"_expression(123)\"></div>", "<div></div>");
sanitize("<div style=\"ｅｘｐｒｅｓｓｉｏｎ(123)\"></div>", "<div></div>");
sanitize("<div style=\"funkyFunction(123)\"></div>", "<div></div>");
sanitize("<div style=\"color:expression(alert('xss'))\"></div>", "<div></div>");
sanitize("<div style=\"color:expression(alert\\000028\\000027xss\\000027\\000029)\"></div>",
"<div></div>");
sanitize("<div style=\"color:expression\\000028alert\\000028\\000027xss\\000027" +
"\\000029\\000029\"></div>", "<div></div>");
sanitize("<div style=\"color:expressio\\00006E\\000028alert\\000028\\000027xss\\000027" +
"\\000029\\000029\"\"></div>", "<div></div>");
sanitize("<div style=\"color:expression\\(alert\\)\"></div>", "<div></div>");
}
public void testAbsolutePositionBanned() {
sanitize("<div style=\"position: absolute\"></div>", "<div></div>");
}
public void testNoTextShadow() {
// todo Gmail disallows this text-shadow; OWASP is fine with it
// sanitize("<div style=\"text-shadow: red -50px -100px 0px\"></div>", "<div></div>");
sanitize("<div style=\"text-shadow: red -50px -100px 0px\"></div>",
"<div style=\"text-shadow:red -50px -100px 0px\"></div>");
}
public void testToStyle() {
sanitize("<div style=\"color:red\"></div>", "<div style=\"color:red\"></div>");
sanitize("<div style=\"color: red\"></div>", "<div style=\"color:red\"></div>");
sanitize("<div style=\"color :red\"></div>", "<div style=\"color:red\"></div>");
sanitize("<div style=\"color :red; font-size:13.5pt;\"></div>",
"<div style=\"color:red;font-size:13.5pt\"></div>");
sanitize("<div style=\"content:'\"'\"></div>", "<div></div>");
}
public void testNoColorStrings() {
sanitize("<div style=\"color: 'red';\"></div>", "<div></div>");
}
public void testTolerateMalformedBorder() {
sanitize("<div style=\"border-left-: solid thin red\"></div>", "<div></div>");
}
public void testRgba() {
sanitize("<div style=\"color:rgba(255, 0, 0, 0.5)\"></div>",
"<div style=\"color:rgba( 255 , 0 , 0 , 0.5 )\"></div>");
}
public void testFontStyle() {
// todo Gmail accepts !important while OWASP discards it; this is only beauty, not security
// sanitize("<div style=\"font-style:normal!important\"></div>",
// "<div style=\"font-style:normal!important\"></div>");
sanitize("<div style=\"font-style:normal!important\"></div>",
"<div style=\"font-style:normal\"></div>");
// todo Gmail accepts !important while OWASP discards it; this is only beauty, not security
// sanitize("<div style=\"font-style:oblique !important\"></div>",
// "<div style=\"font-style:oblique!important\"></div>");
sanitize("<div style=\"font-style:oblique !important\"></div>",
"<div style=\"font-style:oblique\"></div>");
sanitize("<div style=\"font-style:italic\"></div>",
"<div style=\"font-style:italic\"></div>");
}
private void sanitize(String dirtyHTML, String expectedHTML) {
final String cleansedHTML = HtmlSanitizer.sanitizeHtml(dirtyHTML);
assertEquals(expectedHTML, cleansedHTML);
}
}
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