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1 efrain 1 
<?php
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namespace PhpOffice\PhpSpreadsheet\Document;
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use PhpOffice\PhpSpreadsheet\Shared\PasswordHasher;
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class Security
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{
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    /**
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     * LockRevision.
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     *
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     * @var bool
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     */
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    private $lockRevision = false;
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    /**
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     * LockStructure.
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     *
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     * @var bool
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     */
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    private $lockStructure = false;
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    /**
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     * LockWindows.
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     *
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     * @var bool
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     */
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    private $lockWindows = false;
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    /**
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     * RevisionsPassword.
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     *
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     * @var string
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     */
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    private $revisionsPassword = '';
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    /**
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     * WorkbookPassword.
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     *
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     * @var string
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     */
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    private $workbookPassword = '';
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    /**
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     * Create a new Document Security instance.
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     */
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    public function __construct()
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    {
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    }
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    /**
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     * Is some sort of document security enabled?
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     */
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    public function isSecurityEnabled(): bool
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    {
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        return  $this->lockRevision ||
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                $this->lockStructure ||
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                $this->lockWindows;
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    }
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    public function getLockRevision(): bool
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    {
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        return $this->lockRevision;
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    }
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    public function setLockRevision(?bool $locked): self
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    {
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        if ($locked !== null) {
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            $this->lockRevision = $locked;
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        }
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        return $this;
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    }
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    public function getLockStructure(): bool
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    {
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        return $this->lockStructure;
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    }
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    public function setLockStructure(?bool $locked): self
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    {
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        if ($locked !== null) {
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            $this->lockStructure = $locked;
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        }
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        return $this;
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    }
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    public function getLockWindows(): bool
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    {
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        return $this->lockWindows;
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    }
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    public function setLockWindows(?bool $locked): self
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    {
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        if ($locked !== null) {
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            $this->lockWindows = $locked;
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        }
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        return $this;
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    }
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    public function getRevisionsPassword(): string
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    {
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        return $this->revisionsPassword;
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    }
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    /**
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     * Set RevisionsPassword.
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     *
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     * @param string $password
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     * @param bool $alreadyHashed If the password has already been hashed, set this to true
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     *
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     * @return $this
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     */
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    public function setRevisionsPassword(?string $password, bool $alreadyHashed = false)
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    {
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        if ($password !== null) {
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            if (!$alreadyHashed) {
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                $password = PasswordHasher::hashPassword($password);
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            }
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            $this->revisionsPassword = $password;
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        }
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        return $this;
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    }
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    public function getWorkbookPassword(): string
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    {
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        return $this->workbookPassword;
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    }
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    /**
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     * Set WorkbookPassword.
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     *
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     * @param string $password
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     * @param bool $alreadyHashed If the password has already been hashed, set this to true
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     *
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     * @return $this
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     */
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    public function setWorkbookPassword(?string $password, bool $alreadyHashed = false)
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    {
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        if ($password !== null) {
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            if (!$alreadyHashed) {
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                $password = PasswordHasher::hashPassword($password);
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            }
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            $this->workbookPassword = $password;
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        }
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        return $this;
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    }
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}