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<?php |
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namespace MagicLink; |
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use Illuminate\Contracts\Encryption\DecryptException; |
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use Illuminate\Support\Arr; |
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use Illuminate\Support\Facades\Hash; |
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trait AccessCode |
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{ |
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abstract protected function getAccessCode(); |
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abstract protected function getMagikLinkId(); |
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protected $cookieName = 'magic-link-access-code'; |
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public function getResponseAccessCode() |
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{ |
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$responseFromForm = $this->getResponseAccessCodeFromForm(); |
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return $responseFromForm |
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? $responseFromForm |
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: $this->getResponseAccessCodeFromCookie(); |
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} |
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/** |
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* Check if access code is right. |
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*/ |
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private function checkAccessCode(?string $accessCode): bool |
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{ |
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if ($accessCode === null) { |
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return false; |
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} |
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return Hash::check($accessCode, $this->getAccessCode()); |
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} |
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/** |
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* The action was protected with an access code. |
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*/ |
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private function protectedWithAccessCode(): bool |
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{ |
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return ! is_null($this->getAccessCode() ?? null); |
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} |
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private function getResponseAccessCodeFromForm() |
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{ |
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$accessCode = $this->getAccessCodeFromForm(); |
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if ( |
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$this->protectedWithAccessCode() |
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&& $accessCode |
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&& $this->checkAccessCode($accessCode) |
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) { |
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return redirect(request()->url())->withCookie( |
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cookie( |
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$this->cookieName, |
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encrypt($this->getMagikLinkId().'|'.$accessCode), |
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0, |
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'/' |
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) |
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); |
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} |
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return null; |
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} |
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private function getResponseAccessCodeFromCookie() |
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{ |
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if ($this->protectedWithAccessCode()) { |
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if ($this->getAccessCodeFromCookie()) { |
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if ($this->checkAccessCode($this->getAccessCodeFromCookie())) { |
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return null; |
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} |
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} |
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return response()->view( |
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config('magiclink.access-code.view', 'magiclink::ask-for-access-code-form'), |
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[], |
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403 |
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); |
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} |
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return null; |
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} |
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private function getAccessCodeFromForm() |
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{ |
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return request()->get('access-code'); |
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} |
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private function getAccessCodeFromCookie() |
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{ |
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$accessCodeCookies = request()->cookie($this->cookieName); |
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if (! $accessCodeCookies) { |
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return null; |
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} |
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try { |
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$cookie = Arr::last((array) $accessCodeCookies); |
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[$magiclinkId, $accessCode] = explode('|', decrypt($cookie)); |
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if ($magiclinkId === $this->getMagikLinkId()) { |
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return $accessCode; |
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} |
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} catch (DecryptException $e) { |
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} |
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return null; |
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} |
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} |
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