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purify.js
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/*! @license DOMPurify | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/2.0.8/LICENSE */
(
function
(
global
,
factory
)
{
typeof
exports
===
'object'
&&
typeof
module
!==
'undefined'
?
module
.
exports
=
factory
()
:
typeof
define
===
'function'
&&
define
.
amd
?
define
(
factory
)
:
(
global
=
global
||
self
,
global
.
DOMPurify
=
factory
());
}(
this
,
function
()
{
'use strict'
;
function
_toConsumableArray
(
arr
)
{
if
(
Array
.
isArray
(
arr
))
{
for
(
var
i
=
0
,
arr2
=
Array
(
arr
.
length
);
i
<
arr
.
length
;
i
++
)
{
arr2
[
i
]
=
arr
[
i
];
}
return
arr2
;
}
else
{
return
Array
.
from
(
arr
);
}
}
var
hasOwnProperty
=
Object
.
hasOwnProperty
,
setPrototypeOf
=
Object
.
setPrototypeOf
,
isFrozen
=
Object
.
isFrozen
,
objectKeys
=
Object
.
keys
;
var
freeze
=
Object
.
freeze
,
seal
=
Object
.
seal
,
create
=
Object
.
create
;
// eslint-disable-line import/no-mutable-exports
var
_ref
=
typeof
Reflect
!==
'undefined'
&&
Reflect
,
apply
=
_ref
.
apply
,
construct
=
_ref
.
construct
;
if
(
!
apply
)
{
apply
=
function
apply
(
fun
,
thisValue
,
args
)
{
return
fun
.
apply
(
thisValue
,
args
);
};
}
if
(
!
freeze
)
{
freeze
=
function
freeze
(
x
)
{
return
x
;
};
}
if
(
!
seal
)
{
seal
=
function
seal
(
x
)
{
return
x
;
};
}
if
(
!
construct
)
{
construct
=
function
construct
(
Func
,
args
)
{
return
new
(
Function
.
prototype
.
bind
.
apply
(
Func
,
[
null
].
concat
(
_toConsumableArray
(
args
))))();
};
}
var
arrayForEach
=
unapply
(
Array
.
prototype
.
forEach
);
var
arrayIndexOf
=
unapply
(
Array
.
prototype
.
indexOf
);
var
arrayJoin
=
unapply
(
Array
.
prototype
.
join
);
var
arrayPop
=
unapply
(
Array
.
prototype
.
pop
);
var
arrayPush
=
unapply
(
Array
.
prototype
.
push
);
var
arraySlice
=
unapply
(
Array
.
prototype
.
slice
);
var
stringToLowerCase
=
unapply
(
String
.
prototype
.
toLowerCase
);
var
stringMatch
=
unapply
(
String
.
prototype
.
match
);
var
stringReplace
=
unapply
(
String
.
prototype
.
replace
);
var
stringIndexOf
=
unapply
(
String
.
prototype
.
indexOf
);
var
stringTrim
=
unapply
(
String
.
prototype
.
trim
);
var
regExpTest
=
unapply
(
RegExp
.
prototype
.
test
);
var
regExpCreate
=
unconstruct
(
RegExp
);
var
typeErrorCreate
=
unconstruct
(
TypeError
);
function
unapply
(
func
)
{
return
function
(
thisArg
)
{
for
(
var
_len
=
arguments
.
length
,
args
=
Array
(
_len
>
1
?
_len
-
1
:
0
),
_key
=
1
;
_key
<
_len
;
_key
++
)
{
args
[
_key
-
1
]
=
arguments
[
_key
];
}
return
apply
(
func
,
thisArg
,
args
);
};
}
function
unconstruct
(
func
)
{
return
function
()
{
for
(
var
_len2
=
arguments
.
length
,
args
=
Array
(
_len2
),
_key2
=
0
;
_key2
<
_len2
;
_key2
++
)
{
args
[
_key2
]
=
arguments
[
_key2
];
}
return
construct
(
func
,
args
);
};
}
/* Add properties to a lookup table */
function
addToSet
(
set
,
array
)
{
if
(
setPrototypeOf
)
{
// Make 'in' and truthy checks like Boolean(set.constructor)
// independent of any properties defined on Object.prototype.
// Prevent prototype setters from intercepting set as a this value.
setPrototypeOf
(
set
,
null
);
}
var
l
=
array
.
length
;
while
(
l
--
)
{
var
element
=
array
[
l
];
if
(
typeof
element
===
'string'
)
{
var
lcElement
=
stringToLowerCase
(
element
);
if
(
lcElement
!==
element
)
{
// Config presets (e.g. tags.js, attrs.js) are immutable.
if
(
!
isFrozen
(
array
))
{
array
[
l
]
=
lcElement
;
}
element
=
lcElement
;
}
}
set
[
element
]
=
true
;
}
return
set
;
}
/* Shallow clone an object */
function
clone
(
object
)
{
var
newObject
=
create
(
null
);
var
property
=
void
0
;
for
(
property
in
object
)
{
if
(
apply
(
hasOwnProperty
,
object
,
[
property
]))
{
newObject
[
property
]
=
object
[
property
];
}
}
return
newObject
;
}
var
html
=
freeze
([
'a'
,
'abbr'
,
'acronym'
,
'address'
,
'area'
,
'article'
,
'aside'
,
'audio'
,
'b'
,
'bdi'
,
'bdo'
,
'big'
,
'blink'
,
'blockquote'
,
'body'
,
'br'
,
'button'
,
'canvas'
,
'caption'
,
'center'
,
'cite'
,
'code'
,
'col'
,
'colgroup'
,
'content'
,
'data'
,
'datalist'
,
'dd'
,
'decorator'
,
'del'
,
'details'
,
'dfn'
,
'dir'
,
'div'
,
'dl'
,
'dt'
,
'element'
,
'em'
,
'fieldset'
,
'figcaption'
,
'figure'
,
'font'
,
'footer'
,
'form'
,
'h1'
,
'h2'
,
'h3'
,
'h4'
,
'h5'
,
'h6'
,
'head'
,
'header'
,
'hgroup'
,
'hr'
,
'html'
,
'i'
,
'img'
,
'input'
,
'ins'
,
'kbd'
,
'label'
,
'legend'
,
'li'
,
'main'
,
'map'
,
'mark'
,
'marquee'
,
'menu'
,
'menuitem'
,
'meter'
,
'nav'
,
'nobr'
,
'ol'
,
'optgroup'
,
'option'
,
'output'
,
'p'
,
'picture'
,
'pre'
,
'progress'
,
'q'
,
'rp'
,
'rt'
,
'ruby'
,
's'
,
'samp'
,
'section'
,
'select'
,
'shadow'
,
'small'
,
'source'
,
'spacer'
,
'span'
,
'strike'
,
'strong'
,
'style'
,
'sub'
,
'summary'
,
'sup'
,
'table'
,
'tbody'
,
'td'
,
'template'
,
'textarea'
,
'tfoot'
,
'th'
,
'thead'
,
'time'
,
'tr'
,
'track'
,
'tt'
,
'u'
,
'ul'
,
'var'
,
'video'
,
'wbr'
]);
// SVG
var
svg
=
freeze
([
'svg'
,
'a'
,
'altglyph'
,
'altglyphdef'
,
'altglyphitem'
,
'animatecolor'
,
'animatemotion'
,
'animatetransform'
,
'audio'
,
'canvas'
,
'circle'
,
'clippath'
,
'defs'
,
'desc'
,
'ellipse'
,
'filter'
,
'font'
,
'g'
,
'glyph'
,
'glyphref'
,
'hkern'
,
'image'
,
'line'
,
'lineargradient'
,
'marker'
,
'mask'
,
'metadata'
,
'mpath'
,
'path'
,
'pattern'
,
'polygon'
,
'polyline'
,
'radialgradient'
,
'rect'
,
'stop'
,
'style'
,
'switch'
,
'symbol'
,
'text'
,
'textpath'
,
'title'
,
'tref'
,
'tspan'
,
'video'
,
'view'
,
'vkern'
]);
var
svgFilters
=
freeze
([
'feBlend'
,
'feColorMatrix'
,
'feComponentTransfer'
,
'feComposite'
,
'feConvolveMatrix'
,
'feDiffuseLighting'
,
'feDisplacementMap'
,
'feDistantLight'
,
'feFlood'
,
'feFuncA'
,
'feFuncB'
,
'feFuncG'
,
'feFuncR'
,
'feGaussianBlur'
,
'feMerge'
,
'feMergeNode'
,
'feMorphology'
,
'feOffset'
,
'fePointLight'
,
'feSpecularLighting'
,
'feSpotLight'
,
'feTile'
,
'feTurbulence'
]);
var
mathMl
=
freeze
([
'math'
,
'menclose'
,
'merror'
,
'mfenced'
,
'mfrac'
,
'mglyph'
,
'mi'
,
'mlabeledtr'
,
'mmultiscripts'
,
'mn'
,
'mo'
,
'mover'
,
'mpadded'
,
'mphantom'
,
'mroot'
,
'mrow'
,
'ms'
,
'mspace'
,
'msqrt'
,
'mstyle'
,
'msub'
,
'msup'
,
'msubsup'
,
'mtable'
,
'mtd'
,
'mtext'
,
'mtr'
,
'munder'
,
'munderover'
]);
var
text
=
freeze
([
'#text'
]);
var
html$1
=
freeze
([
'accept'
,
'action'
,
'align'
,
'alt'
,
'autocapitalize'
,
'autocomplete'
,
'autopictureinpicture'
,
'autoplay'
,
'background'
,
'bgcolor'
,
'border'
,
'capture'
,
'cellpadding'
,
'cellspacing'
,
'checked'
,
'cite'
,
'class'
,
'clear'
,
'color'
,
'cols'
,
'colspan'
,
'controls'
,
'controlslist'
,
'coords'
,
'crossorigin'
,
'datetime'
,
'decoding'
,
'default'
,
'dir'
,
'disabled'
,
'disablepictureinpicture'
,
'disableremoteplayback'
,
'download'
,
'draggable'
,
'enctype'
,
'enterkeyhint'
,
'face'
,
'for'
,
'headers'
,
'height'
,
'hidden'
,
'high'
,
'href'
,
'hreflang'
,
'id'
,
'inputmode'
,
'integrity'
,
'ismap'
,
'kind'
,
'label'
,
'lang'
,
'list'
,
'loading'
,
'loop'
,
'low'
,
'max'
,
'maxlength'
,
'media'
,
'method'
,
'min'
,
'minlength'
,
'multiple'
,
'muted'
,
'name'
,
'noshade'
,
'novalidate'
,
'nowrap'
,
'open'
,
'optimum'
,
'pattern'
,
'placeholder'
,
'playsinline'
,
'poster'
,
'preload'
,
'pubdate'
,
'radiogroup'
,
'readonly'
,
'rel'
,
'required'
,
'rev'
,
'reversed'
,
'role'
,
'rows'
,
'rowspan'
,
'spellcheck'
,
'scope'
,
'selected'
,
'shape'
,
'size'
,
'sizes'
,
'span'
,
'srclang'
,
'start'
,
'src'
,
'srcset'
,
'step'
,
'style'
,
'summary'
,
'tabindex'
,
'title'
,
'translate'
,
'type'
,
'usemap'
,
'valign'
,
'value'
,
'width'
,
'xmlns'
]);
var
svg$1
=
freeze
([
'accent-height'
,
'accumulate'
,
'additive'
,
'alignment-baseline'
,
'ascent'
,
'attributename'
,
'attributetype'
,
'azimuth'
,
'basefrequency'
,
'baseline-shift'
,
'begin'
,
'bias'
,
'by'
,
'class'
,
'clip'
,
'clippathunits'
,
'clip-path'
,
'clip-rule'
,
'color'
,
'color-interpolation'
,
'color-interpolation-filters'
,
'color-profile'
,
'color-rendering'
,
'cx'
,
'cy'
,
'd'
,
'dx'
,
'dy'
,
'diffuseconstant'
,
'direction'
,
'display'
,
'divisor'
,
'dur'
,
'edgemode'
,
'elevation'
,
'end'
,
'fill'
,
'fill-opacity'
,
'fill-rule'
,
'filter'
,
'filterunits'
,
'flood-color'
,
'flood-opacity'
,
'font-family'
,
'font-size'
,
'font-size-adjust'
,
'font-stretch'
,
'font-style'
,
'font-variant'
,
'font-weight'
,
'fx'
,
'fy'
,
'g1'
,
'g2'
,
'glyph-name'
,
'glyphref'
,
'gradientunits'
,
'gradienttransform'
,
'height'
,
'href'
,
'id'
,
'image-rendering'
,
'in'
,
'in2'
,
'k'
,
'k1'
,
'k2'
,
'k3'
,
'k4'
,
'kerning'
,
'keypoints'
,
'keysplines'
,
'keytimes'
,
'lang'
,
'lengthadjust'
,
'letter-spacing'
,
'kernelmatrix'
,
'kernelunitlength'
,
'lighting-color'
,
'local'
,
'marker-end'
,
'marker-mid'
,
'marker-start'
,
'markerheight'
,
'markerunits'
,
'markerwidth'
,
'maskcontentunits'
,
'maskunits'
,
'max'
,
'mask'
,
'media'
,
'method'
,
'mode'
,
'min'
,
'name'
,
'numoctaves'
,
'offset'
,
'operator'
,
'opacity'
,
'order'
,
'orient'
,
'orientation'
,
'origin'
,
'overflow'
,
'paint-order'
,
'path'
,
'pathlength'
,
'patterncontentunits'
,
'patterntransform'
,
'patternunits'
,
'points'
,
'preservealpha'
,
'preserveaspectratio'
,
'primitiveunits'
,
'r'
,
'rx'
,
'ry'
,
'radius'
,
'refx'
,
'refy'
,
'repeatcount'
,
'repeatdur'
,
'restart'
,
'result'
,
'rotate'
,
'scale'
,
'seed'
,
'shape-rendering'
,
'specularconstant'
,
'specularexponent'
,
'spreadmethod'
,
'startoffset'
,
'stddeviation'
,
'stitchtiles'
,
'stop-color'
,
'stop-opacity'
,
'stroke-dasharray'
,
'stroke-dashoffset'
,
'stroke-linecap'
,
'stroke-linejoin'
,
'stroke-miterlimit'
,
'stroke-opacity'
,
'stroke'
,
'stroke-width'
,
'style'
,
'surfacescale'
,
'systemlanguage'
,
'tabindex'
,
'targetx'
,
'targety'
,
'transform'
,
'text-anchor'
,
'text-decoration'
,
'text-rendering'
,
'textlength'
,
'type'
,
'u1'
,
'u2'
,
'unicode'
,
'values'
,
'viewbox'
,
'visibility'
,
'version'
,
'vert-adv-y'
,
'vert-origin-x'
,
'vert-origin-y'
,
'width'
,
'word-spacing'
,
'wrap'
,
'writing-mode'
,
'xchannelselector'
,
'ychannelselector'
,
'x'
,
'x1'
,
'x2'
,
'xmlns'
,
'y'
,
'y1'
,
'y2'
,
'z'
,
'zoomandpan'
]);
var
mathMl$1
=
freeze
([
'accent'
,
'accentunder'
,
'align'
,
'bevelled'
,
'close'
,
'columnsalign'
,
'columnlines'
,
'columnspan'
,
'denomalign'
,
'depth'
,
'dir'
,
'display'
,
'displaystyle'
,
'encoding'
,
'fence'
,
'frame'
,
'height'
,
'href'
,
'id'
,
'largeop'
,
'length'
,
'linethickness'
,
'lspace'
,
'lquote'
,
'mathbackground'
,
'mathcolor'
,
'mathsize'
,
'mathvariant'
,
'maxsize'
,
'minsize'
,
'movablelimits'
,
'notation'
,
'numalign'
,
'open'
,
'rowalign'
,
'rowlines'
,
'rowspacing'
,
'rowspan'
,
'rspace'
,
'rquote'
,
'scriptlevel'
,
'scriptminsize'
,
'scriptsizemultiplier'
,
'selection'
,
'separator'
,
'separators'
,
'stretchy'
,
'subscriptshift'
,
'supscriptshift'
,
'symmetric'
,
'voffset'
,
'width'
,
'xmlns'
]);
var
xml
=
freeze
([
'xlink:href'
,
'xml:id'
,
'xlink:title'
,
'xml:space'
,
'xmlns:xlink'
]);
// eslint-disable-next-line unicorn/better-regex
var
MUSTACHE_EXPR
=
seal
(
/\{\{[\s\S]*|[\s\S]*\}\}/gm
);
// Specify template detection regex for SAFE_FOR_TEMPLATES mode
var
ERB_EXPR
=
seal
(
/<%[\s\S]*|[\s\S]*%>/gm
);
var
DATA_ATTR
=
seal
(
/^data-[\-\w.\u00B7-\uFFFF]/
);
// eslint-disable-line no-useless-escape
var
ARIA_ATTR
=
seal
(
/^aria-[\-\w]+$/
);
// eslint-disable-line no-useless-escape
var
IS_ALLOWED_URI
=
seal
(
/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i
// eslint-disable-line no-useless-escape
);
var
IS_SCRIPT_OR_DATA
=
seal
(
/^(?:\w+script|data):/i
);
var
ATTR_WHITESPACE
=
seal
(
/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g
// eslint-disable-line no-control-regex
);
var
_typeof
=
typeof
Symbol
===
"function"
&&
typeof
Symbol
.
iterator
===
"symbol"
?
function
(
obj
)
{
return
typeof
obj
;
}
:
function
(
obj
)
{
return
obj
&&
typeof
Symbol
===
"function"
&&
obj
.
constructor
===
Symbol
&&
obj
!==
Symbol
.
prototype
?
"symbol"
:
typeof
obj
;
};
function
_toConsumableArray$1
(
arr
)
{
if
(
Array
.
isArray
(
arr
))
{
for
(
var
i
=
0
,
arr2
=
Array
(
arr
.
length
);
i
<
arr
.
length
;
i
++
)
{
arr2
[
i
]
=
arr
[
i
];
}
return
arr2
;
}
else
{
return
Array
.
from
(
arr
);
}
}
var
getGlobal
=
function
getGlobal
()
{
return
typeof
window
===
'undefined'
?
null
:
window
;
};
/**
* Creates a no-op policy for internal use only.
* Don't export this function outside this module!
* @param {?TrustedTypePolicyFactory} trustedTypes The policy factory.
* @param {Document} document The document object (to determine policy name suffix)
* @return {?TrustedTypePolicy} The policy created (or null, if Trusted Types
* are not supported).
*/
var
_createTrustedTypesPolicy
=
function
_createTrustedTypesPolicy
(
trustedTypes
,
document
)
{
if
((
typeof
trustedTypes
===
'undefined'
?
'undefined'
:
_typeof
(
trustedTypes
))
!==
'object'
||
typeof
trustedTypes
.
createPolicy
!==
'function'
)
{
return
null
;
}
// Allow the callers to control the unique policy name
// by adding a data-tt-policy-suffix to the script element with the DOMPurify.
// Policy creation with duplicate names throws in Trusted Types.
var
suffix
=
null
;
var
ATTR_NAME
=
'data-tt-policy-suffix'
;
if
(
document
.
currentScript
&&
document
.
currentScript
.
hasAttribute
(
ATTR_NAME
))
{
suffix
=
document
.
currentScript
.
getAttribute
(
ATTR_NAME
);
}
var
policyName
=
'dompurify'
+
(
suffix
?
'#'
+
suffix
:
''
);
try
{
return
trustedTypes
.
createPolicy
(
policyName
,
{
createHTML
:
function
createHTML
(
html$$1
)
{
return
html$$1
;
}
});
}
catch
(
_
)
{
// Policy creation failed (most likely another DOMPurify script has
// already run). Skip creating the policy, as this will only cause errors
// if TT are enforced.
console
.
warn
(
'TrustedTypes policy '
+
policyName
+
' could not be created.'
);
return
null
;
}
};
function
createDOMPurify
()
{
var
window
=
arguments
.
length
>
0
&&
arguments
[
0
]
!==
undefined
?
arguments
[
0
]
:
getGlobal
();
var
DOMPurify
=
function
DOMPurify
(
root
)
{
return
createDOMPurify
(
root
);
};
/**
* Version label, exposed for easier checks
* if DOMPurify is up to date or not
*/
DOMPurify
.
version
=
'2.0.15'
;
/**
* Array of elements that DOMPurify removed during sanitation.
* Empty if nothing was removed.
*/
DOMPurify
.
removed
=
[];
if
(
!
window
||
!
window
.
document
||
window
.
document
.
nodeType
!==
9
)
{
// Not running in a browser, provide a factory function
// so that you can pass your own Window
DOMPurify
.
isSupported
=
false
;
return
DOMPurify
;
}
var
originalDocument
=
window
.
document
;
var
removeTitle
=
false
;
var
document
=
window
.
document
;
var
DocumentFragment
=
window
.
DocumentFragment
,
HTMLTemplateElement
=
window
.
HTMLTemplateElement
,
Node
=
window
.
Node
,
NodeFilter
=
window
.
NodeFilter
,
_window$NamedNodeMap
=
window
.
NamedNodeMap
,
NamedNodeMap
=
_window$NamedNodeMap
===
undefined
?
window
.
NamedNodeMap
||
window
.
MozNamedAttrMap
:
_window$NamedNodeMap
,
Text
=
window
.
Text
,
Comment
=
window
.
Comment
,
DOMParser
=
window
.
DOMParser
,
trustedTypes
=
window
.
trustedTypes
;
// As per issue #47, the web-components registry is inherited by a
// new document created via createHTMLDocument. As per the spec
// (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
// a new empty registry is used when creating a template contents owner
// document, so we use that as our parent document to ensure nothing
// is inherited.
if
(
typeof
HTMLTemplateElement
===
'function'
)
{
var
template
=
document
.
createElement
(
'template'
);
if
(
template
.
content
&&
template
.
content
.
ownerDocument
)
{
document
=
template
.
content
.
ownerDocument
;
}
}
var
trustedTypesPolicy
=
_createTrustedTypesPolicy
(
trustedTypes
,
originalDocument
);
var
emptyHTML
=
trustedTypesPolicy
&&
RETURN_TRUSTED_TYPE
?
trustedTypesPolicy
.
createHTML
(
''
)
:
''
;
var
_document
=
document
,
implementation
=
_document
.
implementation
,
createNodeIterator
=
_document
.
createNodeIterator
,
getElementsByTagName
=
_document
.
getElementsByTagName
,
createDocumentFragment
=
_document
.
createDocumentFragment
;
var
importNode
=
originalDocument
.
importNode
;
var
documentMode
=
clone
(
document
).
documentMode
?
document
.
documentMode
:
{};
var
hooks
=
{};
/**
* Expose whether this browser supports running the full DOMPurify.
*/
DOMPurify
.
isSupported
=
implementation
&&
typeof
implementation
.
createHTMLDocument
!==
'undefined'
&&
documentMode
!==
9
;
var
MUSTACHE_EXPR$$1
=
MUSTACHE_EXPR
,
ERB_EXPR$$1
=
ERB_EXPR
,
DATA_ATTR$$1
=
DATA_ATTR
,
ARIA_ATTR$$1
=
ARIA_ATTR
,
IS_SCRIPT_OR_DATA$$1
=
IS_SCRIPT_OR_DATA
,
ATTR_WHITESPACE$$1
=
ATTR_WHITESPACE
;
var
IS_ALLOWED_URI$$1
=
IS_ALLOWED_URI
;
/**
* We consider the elements and attributes below to be safe. Ideally
* don't add any new ones but feel free to remove unwanted ones.
*/
/* allowed element names */
var
ALLOWED_TAGS
=
null
;
var
DEFAULT_ALLOWED_TAGS
=
addToSet
({},
[].
concat
(
_toConsumableArray$1
(
html
),
_toConsumableArray$1
(
svg
),
_toConsumableArray$1
(
svgFilters
),
_toConsumableArray$1
(
mathMl
),
_toConsumableArray$1
(
text
)));
/* Allowed attribute names */
var
ALLOWED_ATTR
=
null
;
var
DEFAULT_ALLOWED_ATTR
=
addToSet
({},
[].
concat
(
_toConsumableArray$1
(
html$1
),
_toConsumableArray$1
(
svg$1
),
_toConsumableArray$1
(
mathMl$1
),
_toConsumableArray$1
(
xml
)));
/* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
var
FORBID_TAGS
=
null
;
/* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
var
FORBID_ATTR
=
null
;
/* Decide if ARIA attributes are okay */
var
ALLOW_ARIA_ATTR
=
true
;
/* Decide if custom data attributes are okay */
var
ALLOW_DATA_ATTR
=
true
;
/* Decide if unknown protocols are okay */
var
ALLOW_UNKNOWN_PROTOCOLS
=
false
;
/* Output should be safe for jQuery's $() factory? */
var
SAFE_FOR_JQUERY
=
false
;
/* Output should be safe for common template engines.
* This means, DOMPurify removes data attributes, mustaches and ERB
*/
var
SAFE_FOR_TEMPLATES
=
false
;
/* Decide if document with <html>... should be returned */
var
WHOLE_DOCUMENT
=
false
;
/* Track whether config is already set on this instance of DOMPurify. */
var
SET_CONFIG
=
false
;
/* Decide if all elements (e.g. style, script) must be children of
* document.body. By default, browsers might move them to document.head */
var
FORCE_BODY
=
false
;
/* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html
* string (or a TrustedHTML object if Trusted Types are supported).
* If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead
*/
var
RETURN_DOM
=
false
;
/* Decide if a DOM `DocumentFragment` should be returned, instead of a html
* string (or a TrustedHTML object if Trusted Types are supported) */
var
RETURN_DOM_FRAGMENT
=
false
;
/* If `RETURN_DOM` or `RETURN_DOM_FRAGMENT` is enabled, decide if the returned DOM
* `Node` is imported into the current `Document`. If this flag is not enabled the
* `Node` will belong (its ownerDocument) to a fresh `HTMLDocument`, created by
* DOMPurify. */
var
RETURN_DOM_IMPORT
=
false
;
/* Try to return a Trusted Type object instead of a string, return a string in
* case Trusted Types are not supported */
var
RETURN_TRUSTED_TYPE
=
false
;
/* Output should be free from DOM clobbering attacks? */
var
SANITIZE_DOM
=
true
;
/* Keep element content when removing element? */
var
KEEP_CONTENT
=
true
;
/* If a `Node` is passed to sanitize(), then performs sanitization in-place instead
* of importing it into a new Document and returning a sanitized copy */
var
IN_PLACE
=
false
;
/* Allow usage of profiles like html, svg and mathMl */
var
USE_PROFILES
=
{};
/* Tags to ignore content of when KEEP_CONTENT is true */
var
FORBID_CONTENTS
=
addToSet
({},
[
'annotation-xml'
,
'audio'
,
'colgroup'
,
'desc'
,
'foreignobject'
,
'head'
,
'iframe'
,
'math'
,
'mi'
,
'mn'
,
'mo'
,
'ms'
,
'mtext'
,
'noembed'
,
'noframes'
,
'plaintext'
,
'script'
,
'style'
,
'svg'
,
'template'
,
'thead'
,
'title'
,
'video'
,
'xmp'
]);
/* Tags that are safe for data: URIs */
var
DATA_URI_TAGS
=
null
;
var
DEFAULT_DATA_URI_TAGS
=
addToSet
({},
[
'audio'
,
'video'
,
'img'
,
'source'
,
'image'
,
'track'
]);
/* Attributes safe for values like "javascript:" */
var
URI_SAFE_ATTRIBUTES
=
null
;
var
DEFAULT_URI_SAFE_ATTRIBUTES
=
addToSet
({},
[
'alt'
,
'class'
,
'for'
,
'id'
,
'label'
,
'name'
,
'pattern'
,
'placeholder'
,
'summary'
,
'title'
,
'value'
,
'style'
,
'xmlns'
]);
/* Keep a reference to config to pass to hooks */
var
CONFIG
=
null
;
/* Ideally, do not touch anything below this line */
/* ______________________________________________ */
var
formElement
=
document
.
createElement
(
'form'
);
/**
* _parseConfig
*
* @param {Object} cfg optional config literal
*/
// eslint-disable-next-line complexity
var
_parseConfig
=
function
_parseConfig
(
cfg
)
{
if
(
CONFIG
&&
CONFIG
===
cfg
)
{
return
;
}
/* Shield configuration object from tampering */
if
(
!
cfg
||
(
typeof
cfg
===
'undefined'
?
'undefined'
:
_typeof
(
cfg
))
!==
'object'
)
{
cfg
=
{};
}
/* Shield configuration object from prototype pollution */
cfg
=
clone
(
cfg
);
/* Set configuration parameters */
ALLOWED_TAGS
=
'ALLOWED_TAGS'
in
cfg
?
addToSet
({},
cfg
.
ALLOWED_TAGS
)
:
DEFAULT_ALLOWED_TAGS
;
ALLOWED_ATTR
=
'ALLOWED_ATTR'
in
cfg
?
addToSet
({},
cfg
.
ALLOWED_ATTR
)
:
DEFAULT_ALLOWED_ATTR
;
URI_SAFE_ATTRIBUTES
=
'ADD_URI_SAFE_ATTR'
in
cfg
?
addToSet
(
clone
(
DEFAULT_URI_SAFE_ATTRIBUTES
),
cfg
.
ADD_URI_SAFE_ATTR
)
:
DEFAULT_URI_SAFE_ATTRIBUTES
;
DATA_URI_TAGS
=
'ADD_DATA_URI_TAGS'
in
cfg
?
addToSet
(
clone
(
DEFAULT_DATA_URI_TAGS
),
cfg
.
ADD_DATA_URI_TAGS
)
:
DEFAULT_DATA_URI_TAGS
;
FORBID_TAGS
=
'FORBID_TAGS'
in
cfg
?
addToSet
({},
cfg
.
FORBID_TAGS
)
:
{};
FORBID_ATTR
=
'FORBID_ATTR'
in
cfg
?
addToSet
({},
cfg
.
FORBID_ATTR
)
:
{};
USE_PROFILES
=
'USE_PROFILES'
in
cfg
?
cfg
.
USE_PROFILES
:
false
;
ALLOW_ARIA_ATTR
=
cfg
.
ALLOW_ARIA_ATTR
!==
false
;
// Default true
ALLOW_DATA_ATTR
=
cfg
.
ALLOW_DATA_ATTR
!==
false
;
// Default true
ALLOW_UNKNOWN_PROTOCOLS
=
cfg
.
ALLOW_UNKNOWN_PROTOCOLS
||
false
;
// Default false
SAFE_FOR_JQUERY
=
cfg
.
SAFE_FOR_JQUERY
||
false
;
// Default false
SAFE_FOR_TEMPLATES
=
cfg
.
SAFE_FOR_TEMPLATES
||
false
;
// Default false
WHOLE_DOCUMENT
=
cfg
.
WHOLE_DOCUMENT
||
false
;
// Default false
RETURN_DOM
=
cfg
.
RETURN_DOM
||
false
;
// Default false
RETURN_DOM_FRAGMENT
=
cfg
.
RETURN_DOM_FRAGMENT
||
false
;
// Default false
RETURN_DOM_IMPORT
=
cfg
.
RETURN_DOM_IMPORT
||
false
;
// Default false
RETURN_TRUSTED_TYPE
=
cfg
.
RETURN_TRUSTED_TYPE
||
false
;
// Default false
FORCE_BODY
=
cfg
.
FORCE_BODY
||
false
;
// Default false
SANITIZE_DOM
=
cfg
.
SANITIZE_DOM
!==
false
;
// Default true
KEEP_CONTENT
=
cfg
.
KEEP_CONTENT
!==
false
;
// Default true
IN_PLACE
=
cfg
.
IN_PLACE
||
false
;
// Default false
IS_ALLOWED_URI$$1
=
cfg
.
ALLOWED_URI_REGEXP
||
IS_ALLOWED_URI$$1
;
if
(
SAFE_FOR_TEMPLATES
)
{
ALLOW_DATA_ATTR
=
false
;
}
if
(
RETURN_DOM_FRAGMENT
)
{
RETURN_DOM
=
true
;
}
/* Parse profile info */
if
(
USE_PROFILES
)
{
ALLOWED_TAGS
=
addToSet
({},
[].
concat
(
_toConsumableArray$1
(
text
)));
ALLOWED_ATTR
=
[];
if
(
USE_PROFILES
.
html
===
true
)
{
addToSet
(
ALLOWED_TAGS
,
html
);
addToSet
(
ALLOWED_ATTR
,
html$1
);
}
if
(
USE_PROFILES
.
svg
===
true
)
{
addToSet
(
ALLOWED_TAGS
,
svg
);
addToSet
(
ALLOWED_ATTR
,
svg$1
);
addToSet
(
ALLOWED_ATTR
,
xml
);
}
if
(
USE_PROFILES
.
svgFilters
===
true
)
{
addToSet
(
ALLOWED_TAGS
,
svgFilters
);
addToSet
(
ALLOWED_ATTR
,
svg$1
);
addToSet
(
ALLOWED_ATTR
,
xml
);
}
if
(
USE_PROFILES
.
mathMl
===
true
)
{
addToSet
(
ALLOWED_TAGS
,
mathMl
);
addToSet
(
ALLOWED_ATTR
,
mathMl$1
);
addToSet
(
ALLOWED_ATTR
,
xml
);
}
}
/* Merge configuration parameters */
if
(
cfg
.
ADD_TAGS
)
{
if
(
ALLOWED_TAGS
===
DEFAULT_ALLOWED_TAGS
)
{
ALLOWED_TAGS
=
clone
(
ALLOWED_TAGS
);
}
addToSet
(
ALLOWED_TAGS
,
cfg
.
ADD_TAGS
);
}
if
(
cfg
.
ADD_ATTR
)
{
if
(
ALLOWED_ATTR
===
DEFAULT_ALLOWED_ATTR
)
{
ALLOWED_ATTR
=
clone
(
ALLOWED_ATTR
);
}
addToSet
(
ALLOWED_ATTR
,
cfg
.
ADD_ATTR
);
}
if
(
cfg
.
ADD_URI_SAFE_ATTR
)
{
addToSet
(
URI_SAFE_ATTRIBUTES
,
cfg
.
ADD_URI_SAFE_ATTR
);
}
/* Add #text in case KEEP_CONTENT is set to true */
if
(
KEEP_CONTENT
)
{
ALLOWED_TAGS
[
'#text'
]
=
true
;
}
/* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */
if
(
WHOLE_DOCUMENT
)
{
addToSet
(
ALLOWED_TAGS
,
[
'html'
,
'head'
,
'body'
]);
}
/* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */
if
(
ALLOWED_TAGS
.
table
)
{
addToSet
(
ALLOWED_TAGS
,
[
'tbody'
]);
delete
FORBID_TAGS
.
tbody
;
}
// Prevent further manipulation of configuration.
// Not available in IE8, Safari 5, etc.
if
(
freeze
)
{
freeze
(
cfg
);
}
CONFIG
=
cfg
;
};
/**
* _forceRemove
*
* @param {Node} node a DOM node
*/
var
_forceRemove
=
function
_forceRemove
(
node
)
{
arrayPush
(
DOMPurify
.
removed
,
{
element
:
node
});
try
{
node
.
parentNode
.
removeChild
(
node
);
}
catch
(
_
)
{
node
.
outerHTML
=
emptyHTML
;
}
};
/**
* _removeAttribute
*
* @param {String} name an Attribute name
* @param {Node} node a DOM node
*/
var
_removeAttribute
=
function
_removeAttribute
(
name
,
node
)
{
try
{
arrayPush
(
DOMPurify
.
removed
,
{
attribute
:
node
.
getAttributeNode
(
name
),
from
:
node
});
}
catch
(
_
)
{
arrayPush
(
DOMPurify
.
removed
,
{
attribute
:
null
,
from
:
node
});
}
node
.
removeAttribute
(
name
);
};
/**
* _initDocument
*
* @param {String} dirty a string of dirty markup
* @return {Document} a DOM, filled with the dirty markup
*/
var
_initDocument
=
function
_initDocument
(
dirty
)
{
/* Create a HTML document */
var
doc
=
void
0
;
var
leadingWhitespace
=
void
0
;
if
(
FORCE_BODY
)
{
dirty
=
'<remove></remove>'
+
dirty
;
}
else
{
/* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
var
matches
=
stringMatch
(
dirty
,
/^[\r\n\t ]+/
);
leadingWhitespace
=
matches
&&
matches
[
0
];
}
var
dirtyPayload
=
trustedTypesPolicy
?
trustedTypesPolicy
.
createHTML
(
dirty
)
:
dirty
;
/* Use the DOMParser API by default, fallback later if needs be */
try
{
doc
=
new
DOMParser
().
parseFromString
(
dirtyPayload
,
'text/html'
);
}
catch
(
_
)
{}
/* Remove title to fix a mXSS bug in older MS Edge */
if
(
removeTitle
)
{
addToSet
(
FORBID_TAGS
,
[
'title'
]);
}
/* Use createHTMLDocument in case DOMParser is not available */
if
(
!
doc
||
!
doc
.
documentElement
)
{
doc
=
implementation
.
createHTMLDocument
(
''
);
var
_doc
=
doc
,
body
=
_doc
.
body
;
body
.
parentNode
.
removeChild
(
body
.
parentNode
.
firstElementChild
);
body
.
outerHTML
=
dirtyPayload
;
}
if
(
dirty
&&
leadingWhitespace
)
{
doc
.
body
.
insertBefore
(
document
.
createTextNode
(
leadingWhitespace
),
doc
.
body
.
childNodes
[
0
]
||
null
);
}
/* Work on whole document or just its body */
return
getElementsByTagName
.
call
(
doc
,
WHOLE_DOCUMENT
?
'html'
:
'body'
)[
0
];
};
/* Here we test for a broken feature in Edge that might cause mXSS */
if
(
DOMPurify
.
isSupported
)
{
(
function
()
{
try
{
var
doc
=
_initDocument
(
'<x/><title></title><img>'
);
if
(
regExpTest
(
/<\/title/
,
doc
.
querySelector
(
'title'
).
innerHTML
))
{
removeTitle
=
true
;
}
}
catch
(
_
)
{}
})();
}
/**
* _createIterator
*
* @param {Document} root document/fragment to create iterator for
* @return {Iterator} iterator instance
*/
var
_createIterator
=
function
_createIterator
(
root
)
{
return
createNodeIterator
.
call
(
root
.
ownerDocument
||
root
,
root
,
NodeFilter
.
SHOW_ELEMENT
|
NodeFilter
.
SHOW_COMMENT
|
NodeFilter
.
SHOW_TEXT
,
function
()
{
return
NodeFilter
.
FILTER_ACCEPT
;
},
false
);
};
/**
* _isClobbered
*
* @param {Node} elm element to check for clobbering attacks
* @return {Boolean} true if clobbered, false if safe
*/
var
_isClobbered
=
function
_isClobbered
(
elm
)
{
if
(
elm
instanceof
Text
||
elm
instanceof
Comment
)
{
return
false
;
}
if
(
typeof
elm
.
nodeName
!==
'string'
||
typeof
elm
.
textContent
!==
'string'
||
typeof
elm
.
removeChild
!==
'function'
||
!
(
elm
.
attributes
instanceof
NamedNodeMap
)
||
typeof
elm
.
removeAttribute
!==
'function'
||
typeof
elm
.
setAttribute
!==
'function'
||
typeof
elm
.
namespaceURI
!==
'string'
)
{
return
true
;
}
return
false
;
};
/**
* _isNode
*
* @param {Node} obj object to check whether it's a DOM node
* @return {Boolean} true is object is a DOM node
*/
var
_isNode
=
function
_isNode
(
object
)
{
return
(
typeof
Node
===
'undefined'
?
'undefined'
:
_typeof
(
Node
))
===
'object'
?
object
instanceof
Node
:
object
&&
(
typeof
object
===
'undefined'
?
'undefined'
:
_typeof
(
object
))
===
'object'
&&
typeof
object
.
nodeType
===
'number'
&&
typeof
object
.
nodeName
===
'string'
;
};
/**
* _executeHook
* Execute user configurable hooks
*
* @param {String} entryPoint Name of the hook's entry point
* @param {Node} currentNode node to work on with the hook
* @param {Object} data additional hook parameters
*/
var
_executeHook
=
function
_executeHook
(
entryPoint
,
currentNode
,
data
)
{
if
(
!
hooks
[
entryPoint
])
{
return
;
}
arrayForEach
(
hooks
[
entryPoint
],
function
(
hook
)
{
hook
.
call
(
DOMPurify
,
currentNode
,
data
,
CONFIG
);
});
};
/**
* _sanitizeElements
*
* @protect nodeName
* @protect textContent
* @protect removeChild
*
* @param {Node} currentNode to check for permission to exist
* @return {Boolean} true if node was killed, false if left alive
*/
// eslint-disable-next-line complexity
var
_sanitizeElements
=
function
_sanitizeElements
(
currentNode
)
{
var
content
=
void
0
;
/* Execute a hook if present */
_executeHook
(
'beforeSanitizeElements'
,
currentNode
,
null
);
/* Check if element is clobbered or can clobber */
if
(
_isClobbered
(
currentNode
))
{
_forceRemove
(
currentNode
);
return
true
;
}
/* Check if tagname contains Unicode */
if
(
stringMatch
(
currentNode
.
nodeName
,
/[\u0080-\uFFFF]/
))
{
_forceRemove
(
currentNode
);
return
true
;
}
/* Now let's check the element's type and name */
var
tagName
=
stringToLowerCase
(
currentNode
.
nodeName
);
/* Execute a hook if present */
_executeHook
(
'uponSanitizeElement'
,
currentNode
,
{
tagName
:
tagName
,
allowedTags
:
ALLOWED_TAGS
});
/* Take care of an mXSS pattern using p, br inside svg, math */
if
((
tagName
===
'svg'
||
tagName
===
'math'
)
&&
currentNode
.
querySelectorAll
(
'p, br'
).
length
!==
0
)
{
_forceRemove
(
currentNode
);
return
true
;
}
/* Remove element if anything forbids its presence */
if
(
!
ALLOWED_TAGS
[
tagName
]
||
FORBID_TAGS
[
tagName
])
{
/* Keep content except for bad-listed elements */
if
(
KEEP_CONTENT
&&
!
FORBID_CONTENTS
[
tagName
]
&&
typeof
currentNode
.
insertAdjacentHTML
===
'function'
)
{
try
{
var
htmlToInsert
=
currentNode
.
innerHTML
;
currentNode
.
insertAdjacentHTML
(
'AfterEnd'
,
trustedTypesPolicy
?
trustedTypesPolicy
.
createHTML
(
htmlToInsert
)
:
htmlToInsert
);
}
catch
(
_
)
{}
}
_forceRemove
(
currentNode
);
return
true
;
}
/* Remove in case a noscript/noembed XSS is suspected */
if
(
tagName
===
'noscript'
&&
regExpTest
(
/<\/noscript/i
,
currentNode
.
innerHTML
))
{
_forceRemove
(
currentNode
);
return
true
;
}
if
(
tagName
===
'noembed'
&&
regExpTest
(
/<\/noembed/i
,
currentNode
.
innerHTML
))
{
_forceRemove
(
currentNode
);
return
true
;
}
/* Convert markup to cover jQuery behavior */
if
(
SAFE_FOR_JQUERY
&&
!
_isNode
(
currentNode
.
firstElementChild
)
&&
(
!
_isNode
(
currentNode
.
content
)
||
!
_isNode
(
currentNode
.
content
.
firstElementChild
))
&&
regExpTest
(
/</g
,
currentNode
.
textContent
))
{
arrayPush
(
DOMPurify
.
removed
,
{
element
:
currentNode
.
cloneNode
()
});
if
(
currentNode
.
innerHTML
)
{
currentNode
.
innerHTML
=
stringReplace
(
currentNode
.
innerHTML
,
/</g
,
'<'
);
}
else
{
currentNode
.
innerHTML
=
stringReplace
(
currentNode
.
textContent
,
/</g
,
'<'
);
}
}
/* Sanitize element content to be template-safe */
if
(
SAFE_FOR_TEMPLATES
&&
currentNode
.
nodeType
===
3
)
{
/* Get the element's text content */
content
=
currentNode
.
textContent
;
content
=
stringReplace
(
content
,
MUSTACHE_EXPR$$1
,
' '
);
content
=
stringReplace
(
content
,
ERB_EXPR$$1
,
' '
);
if
(
currentNode
.
textContent
!==
content
)
{
arrayPush
(
DOMPurify
.
removed
,
{
element
:
currentNode
.
cloneNode
()
});
currentNode
.
textContent
=
content
;
}
}
/* Execute a hook if present */
_executeHook
(
'afterSanitizeElements'
,
currentNode
,
null
);
return
false
;
};
/**
* _isValidAttribute
*
* @param {string} lcTag Lowercase tag name of containing element.
* @param {string} lcName Lowercase attribute name.
* @param {string} value Attribute value.
* @return {Boolean} Returns true if `value` is valid, otherwise false.
*/
// eslint-disable-next-line complexity
var
_isValidAttribute
=
function
_isValidAttribute
(
lcTag
,
lcName
,
value
)
{
/* Make sure attribute cannot clobber */
if
(
SANITIZE_DOM
&&
(
lcName
===
'id'
||
lcName
===
'name'
)
&&
(
value
in
document
||
value
in
formElement
))
{
return
false
;
}
/* Allow valid data-* attributes: At least one character after "-"
(https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)
XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)
We don't need to check the value; it's always URI safe. */
if
(
ALLOW_DATA_ATTR
&&
regExpTest
(
DATA_ATTR$$1
,
lcName
))
;
else
if
(
ALLOW_ARIA_ATTR
&&
regExpTest
(
ARIA_ATTR$$1
,
lcName
))
;
else
if
(
!
ALLOWED_ATTR
[
lcName
]
||
FORBID_ATTR
[
lcName
])
{
return
false
;
/* Check value is safe. First, is attr inert? If so, is safe */
}
else
if
(
URI_SAFE_ATTRIBUTES
[
lcName
])
;
else
if
(
regExpTest
(
IS_ALLOWED_URI$$1
,
stringReplace
(
value
,
ATTR_WHITESPACE$$1
,
''
)))
;
else
if
((
lcName
===
'src'
||
lcName
===
'xlink:href'
||
lcName
===
'href'
)
&&
lcTag
!==
'script'
&&
stringIndexOf
(
value
,
'data:'
)
===
0
&&
DATA_URI_TAGS
[
lcTag
])
;
else
if
(
ALLOW_UNKNOWN_PROTOCOLS
&&
!
regExpTest
(
IS_SCRIPT_OR_DATA$$1
,
stringReplace
(
value
,
ATTR_WHITESPACE$$1
,
''
)))
;
else
if
(
!
value
)
;
else
{
return
false
;
}
return
true
;
};
/**
* _sanitizeAttributes
*
* @protect attributes
* @protect nodeName
* @protect removeAttribute
* @protect setAttribute
*
* @param {Node} currentNode to sanitize
*/
// eslint-disable-next-line complexity
var
_sanitizeAttributes
=
function
_sanitizeAttributes
(
currentNode
)
{
var
attr
=
void
0
;
var
value
=
void
0
;
var
lcName
=
void
0
;
var
idAttr
=
void
0
;
var
l
=
void
0
;
/* Execute a hook if present */
_executeHook
(
'beforeSanitizeAttributes'
,
currentNode
,
null
);
var
attributes
=
currentNode
.
attributes
;
/* Check if we have attributes; if not we might have a text node */
if
(
!
attributes
)
{
return
;
}
var
hookEvent
=
{
attrName
:
''
,
attrValue
:
''
,
keepAttr
:
true
,
allowedAttributes
:
ALLOWED_ATTR
};
l
=
attributes
.
length
;
/* Go backwards over all attributes; safely remove bad ones */
while
(
l
--
)
{
attr
=
attributes
[
l
];
var
_attr
=
attr
,
name
=
_attr
.
name
,
namespaceURI
=
_attr
.
namespaceURI
;
value
=
stringTrim
(
attr
.
value
);
lcName
=
stringToLowerCase
(
name
);
/* Execute a hook if present */
hookEvent
.
attrName
=
lcName
;
hookEvent
.
attrValue
=
value
;
hookEvent
.
keepAttr
=
true
;
hookEvent
.
forceKeepAttr
=
undefined
;
// Allows developers to see this is a property they can set
_executeHook
(
'uponSanitizeAttribute'
,
currentNode
,
hookEvent
);
value
=
hookEvent
.
attrValue
;
/* Did the hooks approve of the attribute? */
if
(
hookEvent
.
forceKeepAttr
)
{
continue
;
}
/* Remove attribute */
// Safari (iOS + Mac), last tested v8.0.5, crashes if you try to
// remove a "name" attribute from an <img> tag that has an "id"
// attribute at the time.
if
(
lcName
===
'name'
&&
currentNode
.
nodeName
===
'IMG'
&&
attributes
.
id
)
{
idAttr
=
attributes
.
id
;
attributes
=
arraySlice
(
attributes
,
[]);
_removeAttribute
(
'id'
,
currentNode
);
_removeAttribute
(
name
,
currentNode
);
if
(
arrayIndexOf
(
attributes
,
idAttr
)
>
l
)
{
currentNode
.
setAttribute
(
'id'
,
idAttr
.
value
);
}
}
else
if
(
// This works around a bug in Safari, where input[type=file]
// cannot be dynamically set after type has been removed
currentNode
.
nodeName
===
'INPUT'
&&
lcName
===
'type'
&&
value
===
'file'
&&
hookEvent
.
keepAttr
&&
(
ALLOWED_ATTR
[
lcName
]
||
!
FORBID_ATTR
[
lcName
]))
{
continue
;
}
else
{
// This avoids a crash in Safari v9.0 with double-ids.
// The trick is to first set the id to be empty and then to
// remove the attribute
if
(
name
===
'id'
)
{
currentNode
.
setAttribute
(
name
,
''
);
}
_removeAttribute
(
name
,
currentNode
);
}
/* Did the hooks approve of the attribute? */
if
(
!
hookEvent
.
keepAttr
)
{
continue
;
}
/* Work around a security issue in jQuery 3.0 */
if
(
SAFE_FOR_JQUERY
&&
regExpTest
(
/\/>/i
,
value
))
{
_removeAttribute
(
name
,
currentNode
);
continue
;
}
/* Take care of an mXSS pattern using namespace switches */
if
(
regExpTest
(
/svg|math/i
,
currentNode
.
namespaceURI
)
&&
regExpTest
(
regExpCreate
(
'</('
+
arrayJoin
(
objectKeys
(
FORBID_CONTENTS
),
'|'
)
+
')'
,
'i'
),
value
))
{
_removeAttribute
(
name
,
currentNode
);
continue
;
}
/* Sanitize attribute content to be template-safe */
if
(
SAFE_FOR_TEMPLATES
)
{
value
=
stringReplace
(
value
,
MUSTACHE_EXPR$$1
,
' '
);
value
=
stringReplace
(
value
,
ERB_EXPR$$1
,
' '
);
}
/* Is `value` valid for this attribute? */
var
lcTag
=
currentNode
.
nodeName
.
toLowerCase
();
if
(
!
_isValidAttribute
(
lcTag
,
lcName
,
value
))
{
continue
;
}
/* Handle invalid data-* attribute set by try-catching it */
try
{
if
(
namespaceURI
)
{
currentNode
.
setAttributeNS
(
namespaceURI
,
name
,
value
);
}
else
{
/* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */
currentNode
.
setAttribute
(
name
,
value
);
}
arrayPop
(
DOMPurify
.
removed
);
}
catch
(
_
)
{}
}
/* Execute a hook if present */
_executeHook
(
'afterSanitizeAttributes'
,
currentNode
,
null
);
};
/**
* _sanitizeShadowDOM
*
* @param {DocumentFragment} fragment to iterate over recursively
*/
var
_sanitizeShadowDOM
=
function
_sanitizeShadowDOM
(
fragment
)
{
var
shadowNode
=
void
0
;
var
shadowIterator
=
_createIterator
(
fragment
);
/* Execute a hook if present */
_executeHook
(
'beforeSanitizeShadowDOM'
,
fragment
,
null
);
while
(
shadowNode
=
shadowIterator
.
nextNode
())
{
/* Execute a hook if present */
_executeHook
(
'uponSanitizeShadowNode'
,
shadowNode
,
null
);
/* Sanitize tags and elements */
if
(
_sanitizeElements
(
shadowNode
))
{
continue
;
}
/* Deep shadow DOM detected */
if
(
shadowNode
.
content
instanceof
DocumentFragment
)
{
_sanitizeShadowDOM
(
shadowNode
.
content
);
}
/* Check attributes, sanitize if necessary */
_sanitizeAttributes
(
shadowNode
);
}
/* Execute a hook if present */
_executeHook
(
'afterSanitizeShadowDOM'
,
fragment
,
null
);
};
/**
* Sanitize
* Public method providing core sanitation functionality
*
* @param {String|Node} dirty string or DOM node
* @param {Object} configuration object
*/
// eslint-disable-next-line complexity
DOMPurify
.
sanitize
=
function
(
dirty
,
cfg
)
{
var
body
=
void
0
;
var
importedNode
=
void
0
;
var
currentNode
=
void
0
;
var
oldNode
=
void
0
;
var
returnNode
=
void
0
;
/* Make sure we have a string to sanitize.
DO NOT return early, as this will return the wrong type if
the user has requested a DOM object rather than a string */
if
(
!
dirty
)
{
dirty
=
'<!-->'
;
}
/* Stringify, in case dirty is an object */
if
(
typeof
dirty
!==
'string'
&&
!
_isNode
(
dirty
))
{
// eslint-disable-next-line no-negated-condition
if
(
typeof
dirty
.
toString
!==
'function'
)
{
throw
typeErrorCreate
(
'toString is not a function'
);
}
else
{
dirty
=
dirty
.
toString
();
if
(
typeof
dirty
!==
'string'
)
{
throw
typeErrorCreate
(
'dirty is not a string, aborting'
);
}
}
}
/* Check we can run. Otherwise fall back or ignore */
if
(
!
DOMPurify
.
isSupported
)
{
if
(
_typeof
(
window
.
toStaticHTML
)
===
'object'
||
typeof
window
.
toStaticHTML
===
'function'
)
{
if
(
typeof
dirty
===
'string'
)
{
return
window
.
toStaticHTML
(
dirty
);
}
if
(
_isNode
(
dirty
))
{
return
window
.
toStaticHTML
(
dirty
.
outerHTML
);
}
}
return
dirty
;
}
/* Assign config vars */
if
(
!
SET_CONFIG
)
{
_parseConfig
(
cfg
);
}
/* Clean up removed elements */
DOMPurify
.
removed
=
[];
/* Check if dirty is correctly typed for IN_PLACE */
if
(
typeof
dirty
===
'string'
)
{
IN_PLACE
=
false
;
}
if
(
IN_PLACE
)
;
else
if
(
dirty
instanceof
Node
)
{
/* If dirty is a DOM element, append to an empty document to avoid
elements being stripped by the parser */
body
=
_initDocument
(
'<!-->'
);
importedNode
=
body
.
ownerDocument
.
importNode
(
dirty
,
true
);
if
(
importedNode
.
nodeType
===
1
&&
importedNode
.
nodeName
===
'BODY'
)
{
/* Node is already a body, use as is */
body
=
importedNode
;
}
else
if
(
importedNode
.
nodeName
===
'HTML'
)
{
body
=
importedNode
;
}
else
{
// eslint-disable-next-line unicorn/prefer-node-append
body
.
appendChild
(
importedNode
);
}
}
else
{
/* Exit directly if we have nothing to do */
if
(
!
RETURN_DOM
&&
!
SAFE_FOR_TEMPLATES
&&
!
WHOLE_DOCUMENT
&&
// eslint-disable-next-line unicorn/prefer-includes
dirty
.
indexOf
(
'<'
)
===
-
1
)
{
return
trustedTypesPolicy
&&
RETURN_TRUSTED_TYPE
?
trustedTypesPolicy
.
createHTML
(
dirty
)
:
dirty
;
}
/* Initialize the document to work on */
body
=
_initDocument
(
dirty
);
/* Check we have a DOM node from the data */
if
(
!
body
)
{
return
RETURN_DOM
?
null
:
emptyHTML
;
}
}
/* Remove first element node (ours) if FORCE_BODY is set */
if
(
body
&&
FORCE_BODY
)
{
_forceRemove
(
body
.
firstChild
);
}
/* Get node iterator */
var
nodeIterator
=
_createIterator
(
IN_PLACE
?
dirty
:
body
);
/* Now start iterating over the created document */
while
(
currentNode
=
nodeIterator
.
nextNode
())
{
/* Fix IE's strange behavior with manipulated textNodes #89 */
if
(
currentNode
.
nodeType
===
3
&&
currentNode
===
oldNode
)
{
continue
;
}
/* Sanitize tags and elements */
if
(
_sanitizeElements
(
currentNode
))
{
continue
;
}
/* Shadow DOM detected, sanitize it */
if
(
currentNode
.
content
instanceof
DocumentFragment
)
{
_sanitizeShadowDOM
(
currentNode
.
content
);
}
/* Check attributes, sanitize if necessary */
_sanitizeAttributes
(
currentNode
);
oldNode
=
currentNode
;
}
oldNode
=
null
;
/* If we sanitized `dirty` in-place, return it. */
if
(
IN_PLACE
)
{
return
dirty
;
}
/* Return sanitized string or DOM */
if
(
RETURN_DOM
)
{
if
(
RETURN_DOM_FRAGMENT
)
{
returnNode
=
createDocumentFragment
.
call
(
body
.
ownerDocument
);
while
(
body
.
firstChild
)
{
// eslint-disable-next-line unicorn/prefer-node-append
returnNode
.
appendChild
(
body
.
firstChild
);
}
}
else
{
returnNode
=
body
;
}
if
(
RETURN_DOM_IMPORT
)
{
/*
AdoptNode() is not used because internal state is not reset
(e.g. the past names map of a HTMLFormElement), this is safe
in theory but we would rather not risk another attack vector.
The state that is cloned by importNode() is explicitly defined
by the specs.
*/
returnNode
=
importNode
.
call
(
originalDocument
,
returnNode
,
true
);
}
return
returnNode
;
}
var
serializedHTML
=
WHOLE_DOCUMENT
?
body
.
outerHTML
:
body
.
innerHTML
;
/* Sanitize final string template-safe */
if
(
SAFE_FOR_TEMPLATES
)
{
serializedHTML
=
stringReplace
(
serializedHTML
,
MUSTACHE_EXPR$$1
,
' '
);
serializedHTML
=
stringReplace
(
serializedHTML
,
ERB_EXPR$$1
,
' '
);
}
return
trustedTypesPolicy
&&
RETURN_TRUSTED_TYPE
?
trustedTypesPolicy
.
createHTML
(
serializedHTML
)
:
serializedHTML
;
};
/**
* Public method to set the configuration once
* setConfig
*
* @param {Object} cfg configuration object
*/
DOMPurify
.
setConfig
=
function
(
cfg
)
{
_parseConfig
(
cfg
);
SET_CONFIG
=
true
;
};
/**
* Public method to remove the configuration
* clearConfig
*
*/
DOMPurify
.
clearConfig
=
function
()
{
CONFIG
=
null
;
SET_CONFIG
=
false
;
};
/**
* Public method to check if an attribute value is valid.
* Uses last set config, if any. Otherwise, uses config defaults.
* isValidAttribute
*
* @param {string} tag Tag name of containing element.
* @param {string} attr Attribute name.
* @param {string} value Attribute value.
* @return {Boolean} Returns true if `value` is valid. Otherwise, returns false.
*/
DOMPurify
.
isValidAttribute
=
function
(
tag
,
attr
,
value
)
{
/* Initialize shared config vars if necessary. */
if
(
!
CONFIG
)
{
_parseConfig
({});
}
var
lcTag
=
stringToLowerCase
(
tag
);
var
lcName
=
stringToLowerCase
(
attr
);
return
_isValidAttribute
(
lcTag
,
lcName
,
value
);
};
/**
* AddHook
* Public method to add DOMPurify hooks
*
* @param {String} entryPoint entry point for the hook to add
* @param {Function} hookFunction function to execute
*/
DOMPurify
.
addHook
=
function
(
entryPoint
,
hookFunction
)
{
if
(
typeof
hookFunction
!==
'function'
)
{
return
;
}
hooks
[
entryPoint
]
=
hooks
[
entryPoint
]
||
[];
arrayPush
(
hooks
[
entryPoint
],
hookFunction
);
};
/**
* RemoveHook
* Public method to remove a DOMPurify hook at a given entryPoint
* (pops it from the stack of hooks if more are present)
*
* @param {String} entryPoint entry point for the hook to remove
*/
DOMPurify
.
removeHook
=
function
(
entryPoint
)
{
if
(
hooks
[
entryPoint
])
{
arrayPop
(
hooks
[
entryPoint
]);
}
};
/**
* RemoveHooks
* Public method to remove all DOMPurify hooks at a given entryPoint
*
* @param {String} entryPoint entry point for the hooks to remove
*/
DOMPurify
.
removeHooks
=
function
(
entryPoint
)
{
if
(
hooks
[
entryPoint
])
{
hooks
[
entryPoint
]
=
[];
}
};
/**
* RemoveAllHooks
* Public method to remove all DOMPurify hooks
*
*/
DOMPurify
.
removeAllHooks
=
function
()
{
hooks
=
{};
};
return
DOMPurify
;
}
var
purify
=
createDOMPurify
();
return
purify
;
}));
//# sourceMappingURL=purify.js.map
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