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Support for SMIME for digital signing and encryption of message

This commit is contained in:
ratatine 2018-11-30 12:30:34 -06:00
parent 028aceea3d
commit ce0eeb7c45
1 changed files with 52 additions and 0 deletions
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52
src/PHPMailer.php
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@ -682,6 +682,20 @@ class PHPMailer
*/
protected $sign_key_pass = '';
/**
* An array of public PEM encoded certificates for each recipient
* @var array
* @access protected
*/
protected $encrypt_recipcerts = array();
/**
* Used if body should be S/MIME encrypted
* @var bool
* @access protected
*/
protected $encrypt_body = false;
/**
* Whether to throw exceptions for errors.
*
@ -2684,6 +2698,33 @@ class PHPMailer
@unlink($signed);
throw new Exception($this->lang('signing') . openssl_error_string());
}
if($this->encrypt_body) {
// Write out the encrypted message
$file = tempnam(sys_get_temp_dir(), "mail");
if (false === file_put_contents($file, $this->MIMEHeader . static::$LE . static::$LE . $body)) {
throw new phpmailerException($this->lang('encrypting') . ' Could not write temp file');
}
$encrypted = tempnam(sys_get_temp_dir(), 'encrypted');
$encrypt = openssl_pkcs7_encrypt($file, $encrypted, $this->encrypt_recipcerts, array());
if ($encrypt) {
@unlink($file);
$body = file_get_contents($encrypted);
// As with signing, the headers get rewriting after encrypting
$parts = explode("\n\n", $body, 2);
$this->MIMEHeader = $parts[0] . static::$LE . static::$LE;
$body = $parts[1];
@unlink($encrypted);
} else {
@unlink($file);
@unlink($encrypted);
throw new phpmailerException($this->lang('encrypting') . openssl_error_string());
}
}
} catch (Exception $exc) {
$body = '';
if ($this->exceptions) {
@ -4157,6 +4198,17 @@ class PHPMailer
$this->sign_extracerts_file = $extracerts_filename;
}
/**
* Set the certificates, keys and passwords to encrypt via S/MIME
* @param array $recipcerts Array of certificates used for recipients in PEM format
*/
public function add_encryption($recipcert_file)
{
$this->encrypt_body = true;
$cert = file_get_contents($recipcert_file);
array_push($this->encrypt_recipcerts, $cert);
}
/**
* Quoted-Printable-encode a DKIM header.
*