273 lines
14 KiB
JavaScript
273 lines
14 KiB
JavaScript
/**
|
|
* Package: svgedit.sanitize
|
|
*
|
|
* Licensed under the Apache License, Version 2
|
|
*
|
|
* Copyright(c) 2010 Alexis Deveria
|
|
* Copyright(c) 2010 Jeff Schiller
|
|
*/
|
|
|
|
// Dependencies:
|
|
// 1) browser.js
|
|
// 2) svgutils.js
|
|
|
|
var svgedit = svgedit || {};
|
|
|
|
(function() {
|
|
|
|
if (!svgedit.sanitize) {
|
|
svgedit.sanitize = {};
|
|
}
|
|
|
|
// Namespace constants
|
|
var svgns = "http://www.w3.org/2000/svg",
|
|
xlinkns = "http://www.w3.org/1999/xlink",
|
|
xmlns = "http://www.w3.org/XML/1998/namespace",
|
|
xmlnsns = "http://www.w3.org/2000/xmlns/", // see http://www.w3.org/TR/REC-xml-names/#xmlReserved
|
|
se_ns = "http://svg-edit.googlecode.com",
|
|
htmlns = "http://www.w3.org/1999/xhtml",
|
|
mathns = "http://www.w3.org/1998/Math/MathML";
|
|
|
|
// map namespace URIs to prefixes
|
|
var nsMap_ = {};
|
|
nsMap_[xlinkns] = 'xlink';
|
|
nsMap_[xmlns] = 'xml';
|
|
nsMap_[xmlnsns] = 'xmlns';
|
|
nsMap_[se_ns] = 'se';
|
|
nsMap_[htmlns] = 'xhtml';
|
|
nsMap_[mathns] = 'mathml';
|
|
|
|
// map prefixes to namespace URIs
|
|
var nsRevMap_ = {};
|
|
$.each(nsMap_, function(key,value){
|
|
nsRevMap_[value] = key;
|
|
});
|
|
|
|
// this defines which elements and attributes that we support
|
|
var svgWhiteList_ = {
|
|
// SVG Elements
|
|
"a": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "id", "mask", "opacity", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform", "xlink:href", "xlink:title"],
|
|
"circle": ["class", "clip-path", "clip-rule", "cx", "cy", "fill", "fill-opacity", "fill-rule", "filter", "id", "mask", "opacity", "r", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
|
|
"clipPath": ["class", "clipPathUnits", "id"],
|
|
"defs": [],
|
|
"desc": [],
|
|
"ellipse": ["class", "clip-path", "clip-rule", "cx", "cy", "fill", "fill-opacity", "fill-rule", "filter", "id", "mask", "opacity", "requiredFeatures", "rx", "ry", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
|
|
"feGaussianBlur": ["class", "color-interpolation-filters", "id", "requiredFeatures", "stdDeviation"],
|
|
"filter": ["class", "color-interpolation-filters", "filterRes", "filterUnits", "height", "id", "primitiveUnits", "requiredFeatures", "width", "x", "xlink:href", "y"],
|
|
"foreignObject": ["class", "font-size", "height", "id", "opacity", "requiredFeatures", "style", "transform", "width", "x", "y"],
|
|
"g": ["class", "clip-path", "clip-rule", "id", "display", "fill", "fill-opacity", "fill-rule", "filter", "mask", "opacity", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform", "font-family", "font-size", "font-style", "font-weight", "text-anchor"],
|
|
"image": ["class", "clip-path", "clip-rule", "filter", "height", "id", "mask", "opacity", "requiredFeatures", "style", "systemLanguage", "transform", "width", "x", "xlink:href", "xlink:title", "y"],
|
|
"line": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "id", "marker-end", "marker-mid", "marker-start", "mask", "opacity", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform", "x1", "x2", "y1", "y2"],
|
|
"linearGradient": ["class", "id", "gradientTransform", "gradientUnits", "requiredFeatures", "spreadMethod", "systemLanguage", "x1", "x2", "xlink:href", "y1", "y2"],
|
|
"marker": ["id", "class", "markerHeight", "markerUnits", "markerWidth", "orient", "preserveAspectRatio", "refX", "refY", "systemLanguage", "viewBox"],
|
|
"mask": ["class", "height", "id", "maskContentUnits", "maskUnits", "width", "x", "y"],
|
|
"metadata": ["class", "id"],
|
|
"path": ["class", "clip-path", "clip-rule", "d", "fill", "fill-opacity", "fill-rule", "filter", "id", "marker-end", "marker-mid", "marker-start", "mask", "opacity", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
|
|
"pattern": ["class", "height", "id", "patternContentUnits", "patternTransform", "patternUnits", "requiredFeatures", "style", "systemLanguage", "viewBox", "width", "x", "xlink:href", "y"],
|
|
"polygon": ["class", "clip-path", "clip-rule", "id", "fill", "fill-opacity", "fill-rule", "filter", "id", "class", "marker-end", "marker-mid", "marker-start", "mask", "opacity", "points", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
|
|
"polyline": ["class", "clip-path", "clip-rule", "id", "fill", "fill-opacity", "fill-rule", "filter", "marker-end", "marker-mid", "marker-start", "mask", "opacity", "points", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
|
|
"radialGradient": ["class", "cx", "cy", "fx", "fy", "gradientTransform", "gradientUnits", "id", "r", "requiredFeatures", "spreadMethod", "systemLanguage", "xlink:href"],
|
|
"rect": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "height", "id", "mask", "opacity", "requiredFeatures", "rx", "ry", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform", "width", "x", "y"],
|
|
"stop": ["class", "id", "offset", "requiredFeatures", "stop-color", "stop-opacity", "style", "systemLanguage"],
|
|
"svg": ["class", "clip-path", "clip-rule", "filter", "id", "height", "mask", "preserveAspectRatio", "requiredFeatures", "style", "systemLanguage", "viewBox", "width", "x", "xmlns", "xmlns:se", "xmlns:xlink", "y"],
|
|
"switch": ["class", "id", "requiredFeatures", "systemLanguage"],
|
|
"symbol": ["class", "fill", "fill-opacity", "fill-rule", "filter", "font-family", "font-size", "font-style", "font-weight", "id", "opacity", "preserveAspectRatio", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform", "viewBox"],
|
|
"text": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "font-family", "font-size", "font-style", "font-weight", "id", "mask", "opacity", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "text-anchor", "transform", "x", "xml:space", "y"],
|
|
"textPath": ["class", "id", "method", "requiredFeatures", "spacing", "startOffset", "style", "systemLanguage", "transform", "xlink:href"],
|
|
"title": [],
|
|
"tspan": ["class", "clip-path", "clip-rule", "dx", "dy", "fill", "fill-opacity", "fill-rule", "filter", "font-family", "font-size", "font-style", "font-weight", "id", "mask", "opacity", "requiredFeatures", "rotate", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "text-anchor", "textLength", "transform", "x", "xml:space", "y"],
|
|
"use": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "height", "id", "mask", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "transform", "width", "x", "xlink:href", "y"],
|
|
|
|
// MathML Elements
|
|
"annotation": ["encoding"],
|
|
"annotation-xml": ["encoding"],
|
|
"maction": ["actiontype", "other", "selection"],
|
|
"math": ["class", "id", "display", "xmlns"],
|
|
"menclose": ["notation"],
|
|
"merror": [],
|
|
"mfrac": ["linethickness"],
|
|
"mi": ["mathvariant"],
|
|
"mmultiscripts": [],
|
|
"mn": [],
|
|
"mo": ["fence", "lspace", "maxsize", "minsize", "rspace", "stretchy"],
|
|
"mover": [],
|
|
"mpadded": ["lspace", "width"],
|
|
"mphantom": [],
|
|
"mprescripts": [],
|
|
"mroot": [],
|
|
"mrow": ["xlink:href", "xlink:type", "xmlns:xlink"],
|
|
"mspace": ["depth", "height", "width"],
|
|
"msqrt": [],
|
|
"mstyle": ["displaystyle", "mathbackground", "mathcolor", "mathvariant", "scriptlevel"],
|
|
"msub": [],
|
|
"msubsup": [],
|
|
"msup": [],
|
|
"mtable": ["align", "columnalign", "columnlines", "columnspacing", "displaystyle", "equalcolumns", "equalrows", "frame", "rowalign", "rowlines", "rowspacing", "width"],
|
|
"mtd": ["columnalign", "columnspan", "rowalign", "rowspan"],
|
|
"mtext": [],
|
|
"mtr": ["columnalign", "rowalign"],
|
|
"munder": [],
|
|
"munderover": [],
|
|
"none": [],
|
|
"semantics": []
|
|
};
|
|
|
|
// Produce a Namespace-aware version of svgWhitelist
|
|
var svgWhiteListNS_ = {};
|
|
$.each(svgWhiteList_, function(elt,atts){
|
|
var attNS = {};
|
|
$.each(atts, function(i, att){
|
|
if (att.indexOf(':') >= 0) {
|
|
var v = att.split(':');
|
|
attNS[v[1]] = nsRevMap_[v[0]];
|
|
} else {
|
|
attNS[att] = att == 'xmlns' ? xmlnsns : null;
|
|
}
|
|
});
|
|
svgWhiteListNS_[elt] = attNS;
|
|
});
|
|
|
|
// temporarily expose these
|
|
svgedit.sanitize.getNSMap = function() { return nsMap_; }
|
|
|
|
// Function: svgedit.sanitize.sanitizeSvg
|
|
// Sanitizes the input node and its children
|
|
// It only keeps what is allowed from our whitelist defined above
|
|
//
|
|
// Parameters:
|
|
// node - The DOM element to be checked, will also check its children
|
|
svgedit.sanitize.sanitizeSvg = function(node) {
|
|
// we only care about element nodes
|
|
// automatically return for all comment, etc nodes
|
|
// for text, we do a whitespace trim
|
|
if (node.nodeType == 3) {
|
|
node.nodeValue = node.nodeValue.replace(/^\s+|\s+$/g, "");
|
|
// Remove empty text nodes
|
|
if(!node.nodeValue.length) node.parentNode.removeChild(node);
|
|
}
|
|
if (node.nodeType != 1) return;
|
|
var doc = node.ownerDocument;
|
|
var parent = node.parentNode;
|
|
// can parent ever be null here? I think the root node's parent is the document...
|
|
if (!doc || !parent) return;
|
|
|
|
var allowedAttrs = svgWhiteList_[node.nodeName];
|
|
var allowedAttrsNS = svgWhiteListNS_[node.nodeName];
|
|
|
|
// if this element is allowed
|
|
if (allowedAttrs != undefined) {
|
|
|
|
var se_attrs = [];
|
|
|
|
var i = node.attributes.length;
|
|
while (i--) {
|
|
// if the attribute is not in our whitelist, then remove it
|
|
// could use jQuery's inArray(), but I don't know if that's any better
|
|
var attr = node.attributes.item(i);
|
|
var attrName = attr.nodeName;
|
|
var attrLocalName = attr.localName;
|
|
var attrNsURI = attr.namespaceURI;
|
|
// Check that an attribute with the correct localName in the correct namespace is on
|
|
// our whitelist or is a namespace declaration for one of our allowed namespaces
|
|
if (!(allowedAttrsNS.hasOwnProperty(attrLocalName) && attrNsURI == allowedAttrsNS[attrLocalName] && attrNsURI != xmlnsns) &&
|
|
!(attrNsURI == xmlnsns && nsMap_[attr.nodeValue]) )
|
|
{
|
|
// TODO(codedread): Programmatically add the se: attributes to the NS-aware whitelist.
|
|
// Bypassing the whitelist to allow se: prefixes. Is there
|
|
// a more appropriate way to do this?
|
|
if(attrName.indexOf('se:') == 0) {
|
|
se_attrs.push([attrName, attr.nodeValue]);
|
|
}
|
|
node.removeAttributeNS(attrNsURI, attrLocalName);
|
|
}
|
|
|
|
// Add spaces before negative signs where necessary
|
|
if(svgedit.browser.isGecko()) {
|
|
switch ( attrName ) {
|
|
case "transform":
|
|
case "gradientTransform":
|
|
case "patternTransform":
|
|
var val = attr.nodeValue.replace(/(\d)-/g, "$1 -");
|
|
node.setAttribute(attrName, val);
|
|
}
|
|
}
|
|
|
|
// for the style attribute, rewrite it in terms of XML presentational attributes
|
|
if (attrName == "style") {
|
|
var props = attr.nodeValue.split(";"),
|
|
p = props.length;
|
|
while(p--) {
|
|
var nv = props[p].split(":");
|
|
// now check that this attribute is supported
|
|
if (allowedAttrs.indexOf(nv[0]) >= 0) {
|
|
node.setAttribute(nv[0],nv[1]);
|
|
}
|
|
}
|
|
node.removeAttribute('style');
|
|
}
|
|
}
|
|
|
|
$.each(se_attrs, function(i, attr) {
|
|
node.setAttributeNS(se_ns, attr[0], attr[1]);
|
|
});
|
|
|
|
// for some elements that have a xlink:href, ensure the URI refers to a local element
|
|
// (but not for links)
|
|
var href = svgedit.utilities.getHref(node);
|
|
if(href &&
|
|
["filter", "linearGradient", "pattern",
|
|
"radialGradient", "textPath", "use"].indexOf(node.nodeName) >= 0)
|
|
{
|
|
// TODO: we simply check if the first character is a #, is this bullet-proof?
|
|
if (href[0] != "#") {
|
|
// remove the attribute (but keep the element)
|
|
svgedit.utilities.setHref(node, "");
|
|
node.removeAttributeNS(xlinkns, "href");
|
|
}
|
|
}
|
|
|
|
// Safari crashes on a <use> without a xlink:href, so we just remove the node here
|
|
if (node.nodeName == "use" && !svgedit.utilities.getHref(node)) {
|
|
parent.removeChild(node);
|
|
return;
|
|
}
|
|
// if the element has attributes pointing to a non-local reference,
|
|
// need to remove the attribute
|
|
$.each(["clip-path", "fill", "filter", "marker-end", "marker-mid", "marker-start", "mask", "stroke"],function(i,attr) {
|
|
var val = node.getAttribute(attr);
|
|
if (val) {
|
|
val = svgedit.utilities.getUrlFromAttr(val);
|
|
// simply check for first character being a '#'
|
|
if (val && val[0] !== "#") {
|
|
node.setAttribute(attr, "");
|
|
node.removeAttribute(attr);
|
|
}
|
|
}
|
|
});
|
|
|
|
// recurse to children
|
|
i = node.childNodes.length;
|
|
while (i--) { svgedit.sanitize.sanitizeSvg(node.childNodes.item(i)); }
|
|
}
|
|
// else, remove this element
|
|
else {
|
|
// remove all children from this node and insert them before this node
|
|
// FIXME: in the case of animation elements this will hardly ever be correct
|
|
var children = [];
|
|
while (node.hasChildNodes()) {
|
|
children.push(parent.insertBefore(node.firstChild, node));
|
|
}
|
|
|
|
// remove this node from the document altogether
|
|
parent.removeChild(node);
|
|
|
|
// call sanitizeSvg on each of those children
|
|
var i = children.length;
|
|
while (i--) { svgedit.sanitize.sanitizeSvg(children[i]); }
|
|
|
|
}
|
|
};
|
|
|
|
})();
|
|
|