-
Notifications
You must be signed in to change notification settings - Fork 9
/
sanitize.js.example
275 lines (248 loc) · 14.3 KB
/
sanitize.js.example
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
/**
* 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";
var sozins = 'http://sozi.baierouge.fr';
// 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';
nsMap_[sozins] = 'sozi';
// 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": [],
"style": ["type"],
"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", "sozi:title", "sozi:sequence", "sozi:hide", "sozi:clip", "sozi:timeout-enable", "sozi:timeout-ms", "sozi:transition-duration-ms", "sozi:transition-zoom-percent", "sozi:transition-profile", "sozi:frameid"],
"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", "height", "depth", "voffset"],
"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]); }
}
};
})();