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| public function Output($name='', $dest='I') {
//Output PDF to some destination
//Finish document if necessary
if ($this->state < 3) {
$this->Close();
}
//Normalize parameters
if (is_bool($dest)) {
$dest = $dest ? 'D' : 'F';
}
$dest = strtoupper($dest);
if ($dest[0] != 'F') {
$name = preg_replace('/[\s]+/', '_', $name);
$name = preg_replace('/[^a-zA-Z0-9_\.-]/', '', $name);
}
if ($this->sign) {
// *** apply digital signature to the document ***
// get the document content
$pdfdoc = $this->getBuffer();
// remove last newline
$pdfdoc = substr($pdfdoc, 0, -1);
// remove filler space
$byterange_string_len = strlen(TCPDF_STATIC::$byterange_string);
// define the ByteRange
$byte_range = array();
$byte_range[0] = 0;
$byte_range[1] = strpos($pdfdoc, TCPDF_STATIC::$byterange_string) + $byterange_string_len + 10;
$byte_range[2] = $byte_range[1] + $this->signature_max_length + 2;
$byte_range[3] = strlen($pdfdoc) - $byte_range[2];
$pdfdoc = substr($pdfdoc, 0, $byte_range[1]).substr($pdfdoc, $byte_range[2]);
// replace the ByteRange
$byterange = sprintf('/ByteRange[0 %u %u %u]', $byte_range[1], $byte_range[2], $byte_range[3]);
$byterange .= str_repeat(' ', ($byterange_string_len - strlen($byterange)));
$pdfdoc = str_replace(TCPDF_STATIC::$byterange_string, $byterange, $pdfdoc);
// write the document to a temporary folder
$tempdoc = TCPDF_STATIC::getObjFilename('doc', $this->file_id);
$f = TCPDF_STATIC::fopenLocal($tempdoc, 'wb');
if (!$f) {
$this->Error('Unable to create temporary file: '.$tempdoc);
}
$pdfdoc_length = strlen($pdfdoc);
fwrite($f, $pdfdoc, $pdfdoc_length);
fclose($f);
// get digital signature via openssl library
$tempsign = TCPDF_STATIC::getObjFilename('sig', $this->file_id);
if (empty($this->signature_data['extracerts'])) {
openssl_pkcs7_sign($tempdoc, $tempsign, $this->signature_data['signcert'], array($this->signature_data['privkey'], $this->signature_data['password']), array(), PKCS7_BINARY | PKCS7_DETACHED);
} else {
openssl_pkcs7_sign($tempdoc, $tempsign, $this->signature_data['signcert'], array($this->signature_data['privkey'], $this->signature_data['password']), array(), PKCS7_BINARY | PKCS7_DETACHED, $this->signature_data['extracerts']);
}
// read signature
$signature = file_get_contents($tempsign);
// extract signature
$signature = substr($signature, $pdfdoc_length);
$signature = substr($signature, (strpos($signature, "%%EOF\n\n------") + 13));
$tmparr = explode("\n\n", $signature);
$signature = $tmparr[1];
// decode signature
$signature = base64_decode(trim($signature));
// add TSA timestamp to signature
$signature = $this->applyTSA($signature);
// convert signature to hex
$signature = current(unpack('H*', $signature));
$signature = str_pad($signature, $this->signature_max_length, '0');
// Add signature to the document
$this->buffer = substr($pdfdoc, 0, $byte_range[1]).'<'.$signature.'>'.substr($pdfdoc, $byte_range[1]);
$this->bufferlen = strlen($this->buffer);
}
switch($dest) {
case 'I': {
// Send PDF to the standard output
if (ob_get_contents()) {
$this->Error('Some data has already been output, can\'t send PDF file');
}
if (php_sapi_name() != 'cli') {
// send output to a browser
header('Content-Type: application/pdf');
if (headers_sent()) {
$this->Error('Some data has already been output to browser, can\'t send PDF file');
}
header('Cache-Control: private, must-revalidate, post-check=0, pre-check=0, max-age=1');
//header('Cache-Control: public, must-revalidate, max-age=0'); // HTTP/1.1
header('Pragma: public');
header('Expires: Sat, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
header('Content-Disposition: inline; filename="'.basename($name).'"');
TCPDF_STATIC::sendOutputData($this->getBuffer(), $this->bufferlen);
} else {
echo $this->getBuffer();
}
break;
}
case 'D': {
// download PDF as file
if (ob_get_contents()) {
$this->Error('Some data has already been output, can\'t send PDF file');
}
header('Content-Description: File Transfer');
if (headers_sent()) {
$this->Error('Some data has already been output to browser, can\'t send PDF file');
}
header('Cache-Control: private, must-revalidate, post-check=0, pre-check=0, max-age=1');
//header('Cache-Control: public, must-revalidate, max-age=0'); // HTTP/1.1
header('Pragma: public');
header('Expires: Sat, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
// force download dialog
if (strpos(php_sapi_name(), 'cgi') === false) {
header('Content-Type: application/force-download');
header('Content-Type: application/octet-stream', false);
header('Content-Type: application/download', false);
header('Content-Type: application/pdf', false);
} else {
header('Content-Type: application/pdf');
}
// use the Content-Disposition header to supply a recommended filename
header('Content-Disposition: attachment; filename="'.basename($name).'"');
header('Content-Transfer-Encoding: binary');
TCPDF_STATIC::sendOutputData($this->getBuffer(), $this->bufferlen);
break;
}
case 'F':
case 'FI':
case 'FD': {
// save PDF to a local file
$f = TCPDF_STATIC::fopenLocal($name, 'wb');
if (!$f) {
$this->Error('Unable to create output file: '.$name);
}
fwrite($f, $this->getBuffer(), $this->bufferlen);
fclose($f);
if ($dest == 'FI') {
// send headers to browser
header('Content-Type: application/pdf');
header('Cache-Control: private, must-revalidate, post-check=0, pre-check=0, max-age=1');
//header('Cache-Control: public, must-revalidate, max-age=0'); // HTTP/1.1
header('Pragma: public');
header('Expires: Sat, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
header('Content-Disposition: inline; filename="'.basename($name).'"');
TCPDF_STATIC::sendOutputData(file_get_contents($name), filesize($name));
} elseif ($dest == 'FD') {
// send headers to browser
if (ob_get_contents()) {
$this->Error('Some data has already been output, can\'t send PDF file');
}
header('Content-Description: File Transfer');
if (headers_sent()) {
$this->Error('Some data has already been output to browser, can\'t send PDF file');
}
header('Cache-Control: private, must-revalidate, post-check=0, pre-check=0, max-age=1');
header('Pragma: public');
header('Expires: Sat, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
// force download dialog
if (strpos(php_sapi_name(), 'cgi') === false) {
header('Content-Type: application/force-download');
header('Content-Type: application/octet-stream', false);
header('Content-Type: application/download', false);
header('Content-Type: application/pdf', false);
} else {
header('Content-Type: application/pdf');
}
// use the Content-Disposition header to supply a recommended filename
header('Content-Disposition: attachment; filename="'.basename($name).'"');
header('Content-Transfer-Encoding: binary');
TCPDF_STATIC::sendOutputData(file_get_contents($name), filesize($name));
}
break;
}
case 'E': {
// return PDF as base64 mime multi-part email attachment (RFC 2045)
$retval = 'Content-Type: application/pdf;'."\r\n";
$retval .= ' name="'.$name.'"'."\r\n";
$retval .= 'Content-Transfer-Encoding: base64'."\r\n";
$retval .= 'Content-Disposition: attachment;'."\r\n";
$retval .= ' filename="'.$name.'"'."\r\n\r\n";
$retval .= chunk_split(base64_encode($this->getBuffer()), 76, "\r\n");
return $retval;
}
case 'S': {
// returns PDF as a string
return $this->getBuffer();
}
default: {
$this->Error('Incorrect output destination: '.$dest);
}
}
return '';
} |
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