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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| <?php | ||
|
|
||
| class NSSCryptography | ||
| { | ||
| private $nss_directory = null; | ||
| private $nss_password = null; | ||
| private $nss_nick = null; | ||
|
|
||
| private function __construct($dir, $pass, $nick) { | ||
| $this->nss_directory = $dir; | ||
| $this->nss_password = $pass; | ||
| $this->nss_nick = $nick; | ||
| } | ||
|
|
||
| private static $instance = null; | ||
|
|
||
| public static function getInstance($dir = null, $pass = null, $nick = null) { | ||
| if (!self::$instance) { | ||
| self::$instance = new NSSCryptography($dir, $pass, $nick); | ||
| } | ||
| return self::$instance; | ||
| } | ||
|
|
||
| public function addSignature($pdf_path, $reason) { | ||
| putenv('NSSPASS='.$this->nss_password); | ||
| exec('pdfsig '.$pdf_path.' '.$pdf_path.'.signed.pdf -add-signature -nssdir "'.$this->nss_directory.'" -nss-pwd "$NSSPASS" -nick "'.$this->nss_nick.'" -reason "'.$reason.'" 2>&1', $output, $returnCode); | ||
| if ($returnCode) { | ||
| throw new Exception('pdfsign error: '.implode(' ', $output)); | ||
| } | ||
| rename($pdf_path.'.signed.pdf', $pdf_path); | ||
| } | ||
|
|
||
| public function verify($pdf_path) { | ||
| $signatures = []; | ||
|
|
||
| putenv('NSSPASS='.$this->nss_password); | ||
| exec('pdfsig -nssdir "'.$this->nss_directory.'" -nss-pwd "$NSSPASS" '.$pdf_path.' 2>&1', $output, $returnCode); | ||
|
|
||
| if ($returnCode && !preg_match('/does not contain any signatures/', $output[0])) { | ||
| throw new Exception('pdfsign error: '.implode(' ', $output)); | ||
| } | ||
|
|
||
| $index = null; | ||
| foreach($output as $l) { | ||
| if (preg_match('/^(Signature[^:]*):/', $l, $m)) { | ||
| $index = $m[1]; | ||
| $signatures[$index] = []; | ||
| continue; | ||
| } | ||
| if (preg_match('/^ - ([^:]*):(.*)/', $l, $m)) { | ||
| $signatures[$index][$m[1]] = $m[2]; | ||
| }elseif (preg_match('/^ - (.*) (document signed)/', $l, $m)) { | ||
| $signatures[$index]["Document signed"] = $m[1]; | ||
| } | ||
| } | ||
| return $signatures; | ||
| } | ||
|
|
||
| public function isEnabled() { | ||
| if (!$this->nss_directory || !$this->nss_nick) { | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| public function isPDFSigConfigured() { | ||
| if (!$this->isEnabled()) { | ||
| return false; | ||
| } | ||
| if (!$this->isPDFSigInstalled()) { | ||
| return false; | ||
| } | ||
| if (!$this->isCertUtilInstalled()) { | ||
| return false; | ||
| } | ||
|
|
||
| $file = tempnam('/tmp', 'certutil'); | ||
| file_put_contents($file, $this->nss_password); | ||
| exec('certutil -f '.$file.' -d '.$this->nss_directory.' -L -n "'.$this->nss_nick.'" 2>&1', $output, $returnCodeL); | ||
| exec('certutil -f '.$file.' -d '.$this->nss_directory.' -K | grep ":'.$this->nss_nick.'" 2>&1', $output, $returnCodeK); | ||
| unlink($file); | ||
|
|
||
| return ($returnCodeL == 0 && $returnCodeK == 0); | ||
| } | ||
|
|
||
| public static function isCertUtilInstalled() { | ||
| $output = null; | ||
| $returnCode = null; | ||
| exec('certutil -v 2>&1', $output, $returnCode); | ||
| if ($returnCode != 1) { | ||
| return false; | ||
| } | ||
| return "OK"; | ||
| } | ||
|
|
||
|
|
||
| public static function isPDFSigInstalled() { | ||
| $output = null; | ||
| $returnCode = null; | ||
| exec('pdfsig -v 2>&1', $output, $returnCode); | ||
|
|
||
| if ($returnCode != 0) { | ||
| return false; | ||
| } | ||
|
|
||
| $version = explode(' ', $output[0])[2]; | ||
| if (! $version >= "21") { | ||
| return false; | ||
| } | ||
| return $version; | ||
|
|
||
| } | ||
| } |
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