I checked out cflib.com, recommended by cfsearching and found the follwoing. It protects against HTMl, Scripts and Applets. But will it help against SQL injections?
Description:
Strips out nasty HTML/scripting but leaves friendly HTML formatting in place. This tag is useful for processing the input from form fields where you want to let the end-user put in HTML but want to avoid letting them put in tags that cause weirdness and/or security problems such as the SCRIPT tag or an onClick event.
Return Values:
Returns a string.
Example:
<CFSET STR = "This is text with a <SCRIPT> in it.">
<CFSET STR2 = "Another example w/ <APPLET> bad stuff.">
<CFOUTPUT>
#SafeText(STR)#<BR>
#SafeText(STR,1)#
</CFOUTPUT>
Parameters:
Name Description Required
text String to be modified. Yes
strip Boolean value (defaults to false) that determines if HTML should be stripped or just escaped out. No
badTags A list of bad tags. Has a long default list. Consult source. No
badEvents A list of bad HTML events. Has a long default list. Consult source. No
Full UDF Source:
<cfscript>
/**
* Removes potentially nasty HTML text.
* Version 2 by Lena Aleksandrova - changes include fixing a bug w/ arguments and use of REreplace where REreplaceNoCase should have been used.
* version 4 fix by Javier Julio - when a bad event is removed, remove the arg too, ie, remove onclick="foo", not just onclick.
*
* @param text String to be modified. (Required)
* @param strip Boolean value (defaults to false) that determines if HTML should be stripped or just escaped out. (Optional)
* @param badTags A list of bad tags. Has a long default list. Consult source. (Optional)
* @param badEvents A list of bad HTML events. Has a long default list. Consult source. (Optional)
* @return Returns a string.
* @author Nathan Dintenfass (nathan@changemedia.com)
* @version 4, October 16, 2006
*/
function safetext(text) {
//default mode is "escape"
var mode = "escape";
//the things to strip out (badTags are HTML tags to strip and badEvents are intra-tag stuff to kill)
//you can change this list to suit your needs
var badTags = "SCRIPT,OBJECT,APPLET,EMBED,FORM,LAYER,ILAYER,FRAME,IFRAME,FRAMESET,PARAM,META";
var badEvents = "onClick,onDblClick,onKeyDown,onKeyPress,onKeyUp,onMouseDown,onMouseOut,onMouseUp,onMouseOver,onBlur,onChange,onFocus,onSelect,javascript:";
var stripperRE = "";
//set up variable to parse and while we're at it trim white space
var theText = trim(text);
//find the first open bracket to start parsing
var obracket = find("<",theText);
//var for badTag
var badTag = "";
//var for the next start in the parse loop
var nextStart = "";
//if there is more than one argument and the second argument is boolean TRUE, we are stripping
if(arraylen(arguments) GT 1 AND isBoolean(arguments[2]) AND arguments[2]) mode = "strip";
if(arraylen(arguments) GT 2 and len(arguments[3])) badTags = arguments[3];
if(arraylen(arguments) GT 3 and len(arguments[4])) badEvents = arguments[4];
//the regular expression used to stip tags
stripperRE = "</?(" & listChangeDelims(badTags,"|") & ")[^>]*>";
//Deal with "smart quotes" and other "special" chars from MS Word
theText = replaceList(theText,chr(8216) & "," & chr(8217) & "," & chr(8220) & "," & chr(8221) & "," & chr(8212) & "," & chr(8213) & "," & chr(8230),"',',"","",--,--,...");
//if escaping, run through the code bracket by bracket and escape the bad tags.
if(mode is "escape"){
//go until no more open brackets to find
while(obracket){
//find the next instance of one of the bad tags
badTag = REFindNoCase(stripperRE,theText,obracket,1);
//if a bad tag is found, escape it
if(badTag.pos[1]){
theText = replace(theText,mid(TheText,badtag.pos[1],badtag.len[1]),HTMLEditFormat(mid(TheText,badtag.pos[1],badtag.len[1])),"ALL");
nextStart = badTag.pos[1] + badTag.len[1];
}
//if no bad tag is found, move on
else{
nextStart = obracket + 1;
}
//find the next open bracket
obracket = find("<",theText,nextStart);
}
}
//if not escaping, assume stripping
else{
theText = REReplaceNoCase(theText,stripperRE,"","ALL");
}
//now kill the bad "events" (intra tag text)
theText = REReplaceNoCase(theText,'(#ListChangeDelims(badEvents,"|")#)[^ >]*',"","ALL");
//return theText
return theText;
}
</cfscript>
