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<?php |
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/****************************************************************************** |
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* Wikipedia Account Creation Assistance tool * |
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* * |
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* All code in this file is released into the public domain by the ACC * |
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* Development Team. Please see team.json for a list of contributors. * |
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******************************************************************************/ |
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namespace Waca\Security; |
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class ContentSecurityPolicyManager |
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{ |
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private $policy = [ |
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'default-src' => [], |
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'script-src-elem' => ['self', 'nonce'], |
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'connect-src' => ['self'], |
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'style-src-elem' => ['self'], |
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'img-src' => ['self', 'data:', 'https://upload.wikimedia.org'], |
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'font-src' => ['self'], |
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'form-action' => ['self'], |
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'frame-ancestors' => [], |
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]; |
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private $nonce = null; |
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private $reportOnly = false; |
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public function getNonce() |
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{ |
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if($this->nonce === null) { |
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$this->nonce = base64_encode(openssl_random_pseudo_bytes(32)); |
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} |
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return $this->nonce; |
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} |
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public function getHeader() : string |
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{ |
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$reportOnly = ''; |
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if($this->reportOnly) { |
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$reportOnly = '-Report-Only'; |
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} |
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$constructedPolicy = "Content-Security-Policy{$reportOnly}: "; |
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foreach ($this->policy as $item => $values) { |
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$constructedPolicy .= $item . ' '; |
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if (count($values) > 0) { |
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foreach ($values as $value) { |
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switch ($value) { |
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case 'none': |
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case 'self': |
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case 'strict-dynamic': |
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$constructedPolicy .= "'{$value}' "; |
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break; |
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case 'nonce': |
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if($this->nonce !== null) { |
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$constructedPolicy .= "'nonce-{$this->nonce}' "; |
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} |
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break; |
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default: |
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$constructedPolicy .= $value . ' '; |
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break; |
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} |
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} |
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} |
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else { |
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$constructedPolicy .= "'none' "; |
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} |
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$constructedPolicy .= '; '; |
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} |
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return $constructedPolicy; |
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} |
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} |
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enwikipedia-acc /
waca
