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/**
* Original by Scott Helme.
*
* Reference: https://scotthelme.co.uk/csp-cheat-sheet/
*
* Supports the following:
* - https://www.w3.org/TR/CSP1/
* - https://www.w3.org/TR/CSP2/
* - https://www.w3.org/TR/CSP3/
*/
(function (Prism) {
/**
* @param {string} source
* @returns {RegExp}
*/
function value(source) {
return RegExp(
/([ \t])/.source + '(?:' + source + ')' + /(?=[\s;]|$)/.source,
'i'
);
}
Prism.languages.csp = {
directive: {
pattern:
/(^|[\s;])(?:base-uri|block-all-mixed-content|(?:child|connect|default|font|frame|img|manifest|media|object|prefetch|script|style|worker)-src|disown-opener|form-action|frame-(?:ancestors|options)|input-protection(?:-(?:clip|selectors))?|navigate-to|plugin-types|policy-uri|referrer|reflected-xss|report-(?:to|uri)|require-sri-for|sandbox|(?:script|style)-src-(?:attr|elem)|upgrade-insecure-requests)(?=[\s;]|$)/i,
lookbehind: true,
alias: 'property',
},
scheme: {
pattern: value(/[a-z][a-z0-9.+-]*:/.source),
lookbehind: true,
},
none: {
pattern: value(/'none'/.source),
lookbehind: true,
alias: 'keyword',
},
nonce: {
pattern: value(/'nonce-[-+/\w=]+'/.source),
lookbehind: true,
alias: 'number',
},
hash: {
pattern: value(/'sha(?:256|384|512)-[-+/\w=]+'/.source),
lookbehind: true,
alias: 'number',
},
host: {
pattern: value(
/[a-z][a-z0-9.+-]*:\/\/[^\s;,']*/.source +
'|' +
/\*[^\s;,']*/.source +
'|' +
/[a-z0-9-]+(?:\.[a-z0-9-]+)+(?::[\d*]+)?(?:\/[^\s;,']*)?/.source
),
lookbehind: true,
alias: 'url',
inside: {
important: /\*/,
},
},
keyword: [
{
pattern: value(/'unsafe-[a-z-]+'/.source),
lookbehind: true,
alias: 'unsafe',
},
{
pattern: value(/'[a-z-]+'/.source),
lookbehind: true,
alias: 'safe',
},
],
punctuation: /;/,
};
})(Prism);
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