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<?php |
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3
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include_once 'util.php'; |
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4
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require_once 'class.certificate.php'; |
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6
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// Green, everything was good |
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7
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define('SMIME_STATUS_SUCCESS', 0); |
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8
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// Orange, CA is missing or OCSP is not available |
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9
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define('SMIME_STATUS_PARTIAL', 1); |
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// Red, something really went wrong |
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11
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define('SMIME_STATUS_FAIL', 2); |
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12
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// Blue, info message |
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13
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define('SMIME_STATUS_INFO', 3); |
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14
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15
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define('SMIME_SUCCESS', 0); |
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16
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define('SMIME_NOPUB', 1); |
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define('SMIME_CERT_EXPIRED', 2); |
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define('SMIME_ERROR', 3); |
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19
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define('SMIME_REVOKED', 4); |
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20
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define('SMIME_CA', 5); |
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21
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define('SMIME_DECRYPT_SUCCESS', 6); |
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22
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define('SMIME_DECRYPT_FAILURE', 7); |
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define('SMIME_UNLOCK_CERT', 8); |
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define('SMIME_OCSP_NOSUPPORT', 9); |
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define('SMIME_OCSP_DISABLED', 10); |
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define('SMIME_OCSP_FAILED', 11); |
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define('SMIME_DECRYPT_CERT_MISMATCH', 12); |
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define('SMIME_USER_DETECT_FAILURE', 13); |
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29
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30
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// OpenSSL Error Constants |
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31
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// openssl_error_string() returns error codes when an operation fails, since we return custom error strings |
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32
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// in our plugin we keep a list of openssl error codes in these defines |
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define('OPENSSL_CA_VERIFY_FAIL', '21075075'); |
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define('OPENSSL_RECIPIENT_CERTIFICATE_MISMATCH', '21070073'); |
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35
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36
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class Pluginsmime extends Plugin { |
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/** |
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* decrypted/verified message. |
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*/ |
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private $message = []; |
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41
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42
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/** |
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* Default MAPI Message Store. |
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44
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*/ |
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private $store; |
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47
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/** |
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* Last openssl error string. |
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*/ |
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50
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private $openssl_error = ""; |
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51
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52
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/** |
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* Called to initialize the plugin and register for hooks. |
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54
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*/ |
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public function init() { |
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56
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$this->registerHook('server.core.settings.init.before'); |
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57
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$this->registerHook('server.util.parse_smime.signed'); |
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58
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$this->registerHook('server.util.parse_smime.encrypted'); |
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59
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$this->registerHook('server.module.itemmodule.open.after'); |
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60
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$this->registerHook('server.core.operations.submitmessage'); |
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61
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$this->registerHook('server.upload_attachment.upload'); |
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62
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$this->registerHook('server.module.createmailitemmodule.beforesend'); |
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63
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$this->registerHook('server.index.load.custom'); |
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64
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65
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if (version_compare(phpversion(), '5.4', '<')) { |
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$this->cipher = OPENSSL_CIPHER_3DES; |
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67
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} |
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else { |
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$this->cipher = PLUGIN_SMIME_CIPHER; |
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} |
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} |
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73
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/** |
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* Default message store. |
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* |
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* @return object MAPI Message store |
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*/ |
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public function getStore() { |
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if (!$this->store) { |
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80
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$this->store = $GLOBALS['mapisession']->getDefaultMessageStore(); |
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} |
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return $this->store; |
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} |
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86
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/** |
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* Process the incoming events that where fired by the client. |
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* |
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* @param string $eventID Identifier of the hook |
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90
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* @param array $data Reference to the data of the triggered hook |
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*/ |
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public function execute($eventID, &$data) { |
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switch ($eventID) { |
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// Register plugin |
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case 'server.core.settings.init.before': |
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$this->onBeforeSettingsInit($data); |
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break; |
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// Verify a signed or encrypted message when an email is opened |
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case 'server.util.parse_smime.signed': |
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$this->onSignedMessage($data); |
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break; |
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102
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103
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case 'server.util.parse_smime.encrypted': |
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$this->onEncrypted($data); |
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break; |
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106
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// Add S/MIME property, which is send to the client |
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case 'server.module.itemmodule.open.after': |
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$this->onAfterOpen($data); |
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break; |
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110
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// Catch uploaded certificate |
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case 'server.upload_attachment.upload': |
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$this->onUploadCertificate($data); |
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break; |
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114
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// Sign email before sending |
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case 'server.core.operations.submitmessage': |
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$this->onBeforeSend($data); |
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break; |
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// Verify that we have public certificates for all recipients |
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case 'server.module.createmailitemmodule.beforesend': |
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$this->onCertificateCheck($data); |
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break; |
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123
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case 'server.index.load.custom': |
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if ($data['name'] === 'smime_passphrase') { |
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include 'templates/passphrase.tpl.php'; |
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126
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127
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exit(); |
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} |
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if ($data['name'] === 'smime_passphrasecheck') { |
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// No need to do anything, this is just used to trigger |
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// the browser's autofill save password dialog. |
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exit(); |
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} |
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break; |
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} |
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} |
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138
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/** |
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* Function checks if public certificate exists for all recipients and creates an error |
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140
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* message for the frontend which includes the email address of the missing public |
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141
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* certificates. |
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* |
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* If my own certificate is missing, a different error message is shown which informs the |
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* user that his own public certificate is missing and required for reading encrypted emails |
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* in the 'Sent items' folder. |
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* |
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147
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* @param array $data Reference to the data of the triggered hook |
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*/ |
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public function onCertificateCheck($data) { |
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$entryid = $data['entryid']; |
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// FIXME: unittests, save trigger will pass $entryid is 0 (which will open the root folder and not the message we want) |
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if ($entryid === false) { |
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return; |
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} |
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156
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if (!isset($data['action']['props']['smime']) || empty($data['action']['props']['smime'])) { |
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return; |
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} |
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160
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$message = mapi_msgstore_openentry($data['store'], $entryid); |
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$module = $data['moduleObject']; |
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$data['success'] = true; |
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164
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$messageClass = mapi_getprops($message, [PR_MESSAGE_CLASS]); |
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$messageClass = $messageClass[PR_MESSAGE_CLASS]; |
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if ($messageClass !== 'IPM.Note.SMIME' && $messageClass !== 'IPM.Note.SMIME.SignedEncrypt') { |
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return; |
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168
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} |
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170
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$recipients = $data['action']['props']['smime']; |
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$missingCerts = []; |
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172
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173
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foreach ($recipients as $recipient) { |
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$email = $recipient['email']; |
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if (!$this->pubcertExists($email, $recipient['internal'])) { |
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array_push($missingCerts, $email); |
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} |
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179
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} |
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180
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181
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if (empty($missingCerts)) { |
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return; |
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183
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} |
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184
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185
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function missingMyself($email) { |
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186
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return $GLOBALS['mapisession']->getSMTPAddress() === $email; |
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187
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} |
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188
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189
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if (array_filter($missingCerts, "missingMyself") === []) { |
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190
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$errorMsg = _('Missing public certificates for the following recipients: ') . implode(', ', $missingCerts) . _('. Please contact your system administrator for details'); |
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191
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} |
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192
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else { |
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193
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$errorMsg = _("Your public certificate is not installed. Without this certificate, you will not be able to read encrypted messages you have sent to others."); |
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194
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} |
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195
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196
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$module->sendFeedback(false, ["type" => ERROR_GENERAL, "info" => ['display_message' => $errorMsg]]); |
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197
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$data['success'] = false; |
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198
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} |
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199
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200
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/** |
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201
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* Function which verifies a message. |
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202
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* |
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203
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* TODO: Clean up flow |
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204
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* |
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205
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* @param mixed $message |
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206
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* @param mixed $eml |
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207
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*/ |
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208
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public function verifyMessage($message, $eml) { |
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209
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$userCert = ''; |
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210
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$tmpUserCert = tempnam(sys_get_temp_dir(), true); |
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211
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$importMessageCert = true; |
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212
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$fromGAB = false; |
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213
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214
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// TODO: worth to split fetching public certificate in a separate function? |
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215
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216
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// If user entry exists in GAB, try to retrieve public cert |
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217
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// Public certificate from GAB in combination with LDAP saved in PR_EMS_AB_TAGGED_X509_CERT |
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218
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$userProps = mapi_getprops($message, [PR_SENT_REPRESENTING_ENTRYID, PR_SENT_REPRESENTING_NAME]); |
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219
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if (isset($userProps[PR_SENT_REPRESENTING_ENTRYID])) { |
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220
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try { |
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221
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$user = mapi_ab_openentry($GLOBALS['mapisession']->getAddressbook(), $userProps[PR_SENT_REPRESENTING_ENTRYID]); |
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222
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$gabCert = $this->getGABCert($user); |
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223
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if (!empty($gabCert)) { |
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224
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$fromGAB = true; |
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225
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// Put empty string into file? dafuq? |
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226
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file_put_contents($tmpUserCert, $userCert); |
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227
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} |
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228
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} |
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229
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catch (MAPIException $e) { |
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230
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$msg = "[smime] Unable to open PR_SENT_REPRESENTING_ENTRYID. Maybe %s was does not exists or deleted from server."; |
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231
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Log::write(LOGLEVEL_ERROR, sprintf($msg, $userProps[PR_SENT_REPRESENTING_NAME])); |
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232
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error_log("[smime] Unable to open PR_SENT_REPRESENTING_NAME: " . print_r($userProps[PR_SENT_REPRESENTING_NAME], true)); |
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233
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$this->message['success'] = SMIME_NOPUB; |
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234
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$this->message['info'] = SMIME_USER_DETECT_FAILURE; |
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235
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} |
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236
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} |
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237
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238
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// When downloading an email as eml, $GLOBALS['operations'] isn't set, so add a check so that downloading works |
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239
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// If the certificate is already fetch from the GAB, skip checking the userStore. |
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240
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if (!$fromGAB && isset($GLOBALS['operations'])) { |
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241
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$senderAddressArray = $this->getSenderAddress($message); |
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242
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$senderAddressArray = $senderAddressArray['props']; |
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243
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if ($senderAddressArray['address_type'] === 'SMTP') { |
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244
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$emailAddr = $senderAddressArray['email_address']; |
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245
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} |
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246
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else { |
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247
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$emailAddr = $senderAddressArray['smtp_address']; |
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248
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} |
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249
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250
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// User not in AB, |
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251
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// so get email address from either PR_SENT_REPRESENTING_NAME, PR_SEARCH_KEY or PR_SENT_REPRESENTING_SEARCH_KEY |
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252
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// of the message |
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253
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if (!$emailAddr) { |
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254
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if (!empty($userProps[PR_SENT_REPRESENTING_NAME])) { |
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255
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$emailAddr = $userProps[PR_SENT_REPRESENTING_NAME]; |
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256
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} |
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257
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else { |
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258
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$searchKeys = mapi_getprops($message, [PR_SEARCH_KEY, PR_SENT_REPRESENTING_SEARCH_KEY]); |
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259
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$searchKey = $searchKeys[PR_SEARCH_KEY] ?? $searchKeys[PR_SENT_REPRESENTING_SEARCH_KEY]; |
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260
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if ($searchKey) { |
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261
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$emailAddr = $trim(strtolower(explode(':', $searchKey)[1])); |
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262
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} |
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263
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} |
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264
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} |
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265
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266
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if ($emailAddr) { |
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267
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// Get all public certificates of $emailAddr stored on the server |
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268
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$userCerts = $this->getPublicKey($emailAddr, true); |
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269
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} |
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270
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} |
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271
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|
272
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// Save signed message in a random file |
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273
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$tmpfname = tempnam(sys_get_temp_dir(), true); |
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274
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file_put_contents($tmpfname, $eml); |
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275
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276
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// Create random file for saving the signed message |
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277
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$outcert = tempnam(sys_get_temp_dir(), true); |
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278
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279
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// Verify signed message |
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280
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// Returns True if verified, False if tampered or signing certificate invalid OR -1 on error |
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281
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if (count($userCerts) > 0) { |
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282
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// Try to verify a certificate in the MAPI store |
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283
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foreach ($userCerts as $userCert) { |
|
284
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$userCert = base64_decode($userCert); |
|
285
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// Save signed message in a random file |
|
286
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$tmpfname = tempnam(sys_get_temp_dir(), true); |
|
287
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file_put_contents($tmpfname, $eml); |
|
288
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289
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// Create random file for saving the signed message |
|
290
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$outcert = tempnam(sys_get_temp_dir(), true); |
|
291
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|
292
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if (!empty($userCert)) { // Check MAPI UserStore |
|
293
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file_put_contents($tmpUserCert, $userCert); |
|
294
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} |
|
295
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$signed_ok = openssl_pkcs7_verify($tmpfname, PKCS7_NOINTERN, $outcert, explode(';', PLUGIN_SMIME_CACERTS), $tmpUserCert); |
|
296
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$openssl_error_code = $this->extract_openssl_error(); |
|
297
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$this->validateSignedMessage($signed_ok, $openssl_error_code); |
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298
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// Check if we need to import a newer certificate |
|
299
|
|
|
$importCert = file_get_contents($outcert); |
|
300
|
|
|
$parsedImportCert = openssl_x509_parse($importCert); |
|
301
|
|
|
$parsedUserCert = openssl_x509_parse($userCert); |
|
302
|
|
|
if ($signed_ok && $openssl_error_code !== OPENSSL_CA_VERIFY_FAIL) { // CA Checks out |
|
303
|
|
|
$caCerts = $this->extractCAs($tmpfname); |
|
304
|
|
|
// If validTo and validFrom are more in the future, emailAddress matches and OCSP check is valid, import newer certificate |
|
305
|
|
|
if ($parsedImportCert['validTo'] > $parsedUserCert['validTo'] && $parsedImportCert['validFrom'] > $parsedUserCert['validFrom'] && |
|
306
|
|
|
getCertEmail($parsedImportCert) === getCertEmail($parsedUserCert) && verifyOCSP($importCert, $caCerts, $this->message) && |
|
307
|
|
|
$importMessageCert !== false) { |
|
308
|
|
|
// Redundant |
|
309
|
|
|
$importMessageCert = true; |
|
310
|
|
|
} |
|
311
|
|
|
else { |
|
312
|
|
|
$importMessageCert = false; |
|
313
|
|
|
verifyOCSP($userCert, $caCerts, $this->message); |
|
314
|
|
|
break; |
|
315
|
|
|
} |
|
316
|
|
|
} |
|
317
|
|
|
} |
|
318
|
|
|
} |
|
319
|
|
|
else { |
|
320
|
|
|
// Works. Just leave it. |
|
321
|
|
|
$signed_ok = openssl_pkcs7_verify($tmpfname, PKCS7_NOSIGS, $outcert, explode(';', PLUGIN_SMIME_CACERTS)); |
|
322
|
|
|
$openssl_error_code = $this->extract_openssl_error(); |
|
323
|
|
|
$this->validateSignedMessage($signed_ok, $openssl_error_code); |
|
324
|
|
|
|
|
325
|
|
|
// OCSP check |
|
326
|
|
|
if ($signed_ok && $openssl_error_code !== OPENSSL_CA_VERIFY_FAIL) { // CA Checks out |
|
327
|
|
|
$userCert = file_get_contents($outcert); |
|
328
|
|
|
$parsedImportCert = openssl_x509_parse($userCert); |
|
329
|
|
|
|
|
330
|
|
|
$caCerts = $this->extractCAs($tmpfname); |
|
331
|
|
|
if (!is_array($parsedImportCert) || !verifyOCSP($userCert, $caCerts, $this->message)) { |
|
|
|
|
|
|
332
|
|
|
$importMessageCert = false; |
|
333
|
|
|
} |
|
334
|
|
|
// We don't have a certificate from the MAPI UserStore or LDAP, so we will set $userCert to $importCert |
|
335
|
|
|
// so that we can verify the message according to the be imported certificate. |
|
336
|
|
|
} |
|
337
|
|
|
else { // No pubkey |
|
338
|
|
|
$importMessageCert = false; |
|
339
|
|
|
Log::write(LOGLEVEL_INFO, sprintf("[smime] Unable to verify message without public key, openssl error: '%s'", $this->openssl_error)); |
|
|
|
|
|
|
340
|
|
|
$this->message['success'] = SMIME_STATUS_FAIL; |
|
341
|
|
|
$this->message['info'] = SMIME_CA; |
|
342
|
|
|
} |
|
343
|
|
|
} |
|
344
|
|
|
// Certificate is newer or not yet imported to the user store and not revoked |
|
345
|
|
|
// If certificate is from the GAB, then don't import it. |
|
346
|
|
|
if ($importMessageCert && !$fromGAB) { |
|
347
|
|
|
$signed_ok = openssl_pkcs7_verify($tmpfname, PKCS7_NOSIGS, $outcert, explode(';', PLUGIN_SMIME_CACERTS)); |
|
348
|
|
|
$openssl_error_code = $this->extract_openssl_error(); |
|
349
|
|
|
$this->validateSignedMessage($signed_ok, $openssl_error_code); |
|
350
|
|
|
$userCert = file_get_contents($outcert); |
|
351
|
|
|
$parsedImportCert = openssl_x509_parse($userCert); |
|
352
|
|
|
// FIXME: doing this in importPublicKey too... |
|
353
|
|
|
$certEmail = getCertEmail($parsedImportCert); |
|
354
|
|
|
if (!empty($certEmail)) { |
|
355
|
|
|
$this->importCertificate($userCert, $parsedImportCert, 'public', true); |
|
356
|
|
|
} |
|
357
|
|
|
} |
|
358
|
|
|
|
|
359
|
|
|
// Remove extracted certificate from openssl_pkcs7_verify |
|
360
|
|
|
unlink($outcert); |
|
361
|
|
|
|
|
362
|
|
|
// remove the temporary file |
|
363
|
|
|
unlink($tmpfname); |
|
364
|
|
|
|
|
365
|
|
|
// Clean up temp cert |
|
366
|
|
|
unlink($tmpUserCert); |
|
367
|
|
|
} |
|
368
|
|
|
|
|
369
|
|
|
/** |
|
370
|
|
|
* Function which decrypts an encrypted message. |
|
371
|
|
|
* The key should be unlocked and stored in the EncryptionStore for a successful decrypt |
|
372
|
|
|
* If the key isn't in the session, we give the user a message to unlock his certificate. |
|
373
|
|
|
* |
|
374
|
|
|
* @param {mixed} $data array of data from hook |
|
|
|
|
|
|
375
|
|
|
*/ |
|
376
|
|
|
public function onEncrypted($data) { |
|
377
|
|
|
// Cert unlocked, decode message |
|
378
|
|
|
$this->message['success'] = SMIME_STATUS_INFO; |
|
379
|
|
|
$this->message['info'] = SMIME_DECRYPT_FAILURE; |
|
380
|
|
|
|
|
381
|
|
|
$this->message['type'] = 'encrypted'; |
|
382
|
|
|
$encryptionStore = EncryptionStore::getInstance(); |
|
383
|
|
|
$pass = $encryptionStore->get('smime'); |
|
384
|
|
|
if (isset($pass) && !empty($pass)) { |
|
385
|
|
|
$certs = readPrivateCert($this->getStore(), $pass, false); |
|
386
|
|
|
// create random file for saving the encrypted and body message |
|
387
|
|
|
$tmpFile = tempnam(sys_get_temp_dir(), true); |
|
|
|
|
|
|
388
|
|
|
$tmpDecrypted = tempnam(sys_get_temp_dir(), true); |
|
389
|
|
|
|
|
390
|
|
|
// Write mime header. Because it's not provided in the attachment, otherwise openssl won't parse it |
|
391
|
|
|
$fp = fopen($tmpFile, 'w'); |
|
392
|
|
|
fwrite($fp, "Content-Type: application/pkcs7-mime; name=\"smime.p7m\"; smime-type=enveloped-data\n"); |
|
393
|
|
|
fwrite($fp, "Content-Transfer-Encoding: base64\nContent-Disposition: attachment; filename=\"smime.p7m\"\n"); |
|
394
|
|
|
fwrite($fp, "Content-Description: S/MIME Encrypted Message\n\n"); |
|
395
|
|
|
fwrite($fp, chunk_split(base64_encode($data['data']), 72) . "\n"); |
|
396
|
|
|
fclose($fp); |
|
397
|
|
|
|
|
398
|
|
|
$decryptStatus = false; |
|
399
|
|
|
// If multiple private certs were decrypted with supplied password |
|
400
|
|
|
if (!$certs['cert'] && count($certs) > 0) { |
|
401
|
|
|
foreach ($certs as $cert) { |
|
402
|
|
|
$decryptStatus = openssl_pkcs7_decrypt($tmpFile, $tmpDecrypted, $cert['cert'], [$cert['pkey'], $pass]); |
|
403
|
|
|
if ($decryptStatus !== false) { |
|
404
|
|
|
break; |
|
405
|
|
|
} |
|
406
|
|
|
} |
|
407
|
|
|
} |
|
408
|
|
|
else { |
|
409
|
|
|
$decryptStatus = openssl_pkcs7_decrypt($tmpFile, $tmpDecrypted, $certs['cert'], [$certs['pkey'], $pass]); |
|
410
|
|
|
} |
|
411
|
|
|
|
|
412
|
|
|
$content = file_get_contents($tmpDecrypted); |
|
413
|
|
|
// Handle OL empty body Outlook Signed & Encrypted mails. |
|
414
|
|
|
// The S/MIME plugin has to extract the body from the signed message. |
|
415
|
|
|
if (strpos($content, 'signed-data') !== false) { |
|
416
|
|
|
$this->message['type'] = 'encryptsigned'; |
|
417
|
|
|
$olcert = tempnam(sys_get_temp_dir(), true); |
|
418
|
|
|
$olmsg = tempnam(sys_get_temp_dir(), true); |
|
419
|
|
|
openssl_pkcs7_verify($tmpDecrypted, PKCS7_NOVERIFY, $olcert); |
|
420
|
|
|
openssl_pkcs7_verify($tmpDecrypted, PKCS7_NOVERIFY, $olcert, [], $olcert, $olmsg); |
|
421
|
|
|
$content = file_get_contents($olmsg); |
|
422
|
|
|
unlink($olmsg); |
|
423
|
|
|
unlink($olcert); |
|
424
|
|
|
} |
|
425
|
|
|
|
|
426
|
|
|
$copyProps = mapi_getprops($data['message'], [PR_MESSAGE_DELIVERY_TIME, PR_SENDER_ENTRYID, PR_SENT_REPRESENTING_ENTRYID]); |
|
427
|
|
|
mapi_inetmapi_imtomapi($GLOBALS['mapisession']->getSession(), $data['store'], $GLOBALS['mapisession']->getAddressbook(), $data['message'], $content, ['parse_smime_signed' => true]); |
|
428
|
|
|
// Manually set time back to the received time, since mapi_inetmapi_imtomapi overwrites this |
|
429
|
|
|
mapi_setprops($data['message'], $copyProps); |
|
430
|
|
|
|
|
431
|
|
|
// remove temporary files |
|
432
|
|
|
unlink($tmpFile); |
|
433
|
|
|
unlink($tmpDecrypted); |
|
434
|
|
|
|
|
435
|
|
|
// mapi_inetmapi_imtomapi removes the PR_MESSAGE_CLASS = 'IPM.Note.SMIME.MultipartSigned' |
|
436
|
|
|
// So we need to check if the message was also signed by looking at the MIME_TAG in the eml |
|
437
|
|
|
if (strpos($content, 'multipart/signed') !== false || strpos($content, 'signed-data') !== false) { |
|
438
|
|
|
$this->message['type'] = 'encryptsigned'; |
|
439
|
|
|
$this->verifyMessage($data['message'], $content); |
|
440
|
|
|
} |
|
441
|
|
|
elseif ($decryptStatus) { |
|
442
|
|
|
$this->message['info'] = SMIME_DECRYPT_SUCCESS; |
|
443
|
|
|
$this->message['success'] = SMIME_STATUS_SUCCESS; |
|
444
|
|
|
} |
|
445
|
|
|
elseif ($this->extract_openssl_error() === OPENSSL_RECIPIENT_CERTIFICATE_MISMATCH) { |
|
446
|
|
|
error_log("[smime] Error when decrypting email, openssl error: " . print_r($this->openssl_error, true)); |
|
|
|
|
|
|
447
|
|
|
Log::Write(LOGLEVEL_ERROR, sprintf("[smime] Error when decrypting email, openssl error: '%s'", $this->openssl_error)); |
|
|
|
|
|
|
448
|
|
|
$this->message['info'] = SMIME_DECRYPT_CERT_MISMATCH; |
|
449
|
|
|
$this->message['success'] = SMIME_STATUS_FAIL; |
|
450
|
|
|
} |
|
451
|
|
|
} |
|
452
|
|
|
else { |
|
453
|
|
|
$this->message['info'] = SMIME_UNLOCK_CERT; |
|
454
|
|
|
} |
|
455
|
|
|
|
|
456
|
|
|
if (!encryptionStoreExpirationSupport()) { |
|
457
|
|
|
withPHPSession(function () use ($encryptionStore) { |
|
458
|
|
|
$encryptionStore->add('smime', ''); |
|
459
|
|
|
}); |
|
460
|
|
|
} |
|
461
|
|
|
} |
|
462
|
|
|
|
|
463
|
|
|
/** |
|
464
|
|
|
* Function which calls verifyMessage to verify if the message isn't malformed during transport. |
|
465
|
|
|
* |
|
466
|
|
|
* @param {mixed} $data array of data from hook |
|
|
|
|
|
|
467
|
|
|
*/ |
|
468
|
|
|
public function onSignedMessage($data) { |
|
469
|
|
|
$this->message['type'] = 'signed'; |
|
470
|
|
|
$this->verifyMessage($data['message'], $data['data']); |
|
471
|
|
|
} |
|
472
|
|
|
|
|
473
|
|
|
/** |
|
474
|
|
|
* General function which parses the openssl_pkcs7_verify return value and the errors generated by |
|
475
|
|
|
* openssl_error_string(). |
|
476
|
|
|
* |
|
477
|
|
|
* @param mixed $openssl_return |
|
478
|
|
|
* @param mixed $openssl_errors |
|
479
|
|
|
*/ |
|
480
|
|
|
public function validateSignedMessage($openssl_return, $openssl_errors) { |
|
481
|
|
|
if ($openssl_return === -1) { |
|
482
|
|
|
$this->message['info'] = SMIME_ERROR; |
|
483
|
|
|
$this->message['success'] = SMIME_STATUS_FAIL; |
|
484
|
|
|
// Verification was successful |
|
485
|
|
|
} |
|
486
|
|
|
elseif ($openssl_return) { |
|
487
|
|
|
$this->message['info'] = SMIME_SUCCESS; |
|
488
|
|
|
$this->message['success'] = SMIME_STATUS_SUCCESS; |
|
489
|
|
|
// Verification was not successful, display extra information. |
|
490
|
|
|
} |
|
491
|
|
|
else { |
|
492
|
|
|
$this->message['success'] = SMIME_STATUS_FAIL; |
|
493
|
|
|
if ($openssl_errors === OPENSSL_CA_VERIFY_FAIL) { |
|
494
|
|
|
$this->message['info'] = SMIME_CA; |
|
495
|
|
|
} |
|
496
|
|
|
else { // Catch general errors |
|
497
|
|
|
$this->message['info'] = SMIME_ERROR; |
|
498
|
|
|
} |
|
499
|
|
|
} |
|
500
|
|
|
} |
|
501
|
|
|
|
|
502
|
|
|
/** |
|
503
|
|
|
* Set smime key in $data array, which is send back to client |
|
504
|
|
|
* Since we can't create this array key in the hooks: |
|
505
|
|
|
* 'server.util.parse_smime.signed' |
|
506
|
|
|
* 'server.util.parse_smime.encrypted'. |
|
507
|
|
|
* |
|
508
|
|
|
* TODO: investigate if we can move away from this hook |
|
509
|
|
|
* |
|
510
|
|
|
* @param {mixed} $data |
|
|
|
|
|
|
511
|
|
|
*/ |
|
512
|
|
|
public function onAfterOpen($data) { |
|
513
|
|
|
if (isset($this->message) && !empty($this->message)) { |
|
514
|
|
|
$data['data']['item']['props']['smime'] = $this->message; |
|
515
|
|
|
} |
|
516
|
|
|
} |
|
517
|
|
|
|
|
518
|
|
|
/** |
|
519
|
|
|
* Handles the uploaded certificate in the settingsmenu in grommunio Web |
|
520
|
|
|
* - Opens the certificate with provided passphrase |
|
521
|
|
|
* - Checks if it can be used for signing/decrypting |
|
522
|
|
|
* - Verifies that the email address is equal to the |
|
523
|
|
|
* - Verifies that the certificate isn't expired and inform user. |
|
524
|
|
|
* |
|
525
|
|
|
* @param {mixed} $data |
|
|
|
|
|
|
526
|
|
|
*/ |
|
527
|
|
|
public function onUploadCertificate($data) { |
|
528
|
|
|
if ($data['sourcetype'] === 'certificate') { |
|
529
|
|
|
$passphrase = $_POST['passphrase']; |
|
530
|
|
|
$saveCert = false; |
|
531
|
|
|
$tmpname = $data['tmpname']; |
|
532
|
|
|
$message = ''; |
|
|
|
|
|
|
533
|
|
|
|
|
534
|
|
|
$certificate = file_get_contents($tmpname); |
|
535
|
|
|
$emailAddress = $GLOBALS['mapisession']->getSMTPAddress(); |
|
536
|
|
|
list($message, $publickey, $publickeyData) = validateUploadedPKCS($certificate, $passphrase, $emailAddress); |
|
537
|
|
|
|
|
538
|
|
|
// All checks completed successful |
|
539
|
|
|
// Store private cert in users associated store (check for duplicates) |
|
540
|
|
|
if (empty($message)) { |
|
541
|
|
|
$certMessage = getMAPICert($this->getStore()); |
|
542
|
|
|
// TODO: update to serialNumber check |
|
543
|
|
|
if ($certMessage && $certMessage[0][PR_MESSAGE_DELIVERY_TIME] == $publickeyData['validTo_time_t']) { |
|
544
|
|
|
$message = _('Certificate is already stored on the server'); |
|
545
|
|
|
} |
|
546
|
|
|
else { |
|
547
|
|
|
$saveCert = true; |
|
548
|
|
|
$root = mapi_msgstore_openentry($this->getStore(), null); |
|
|
|
|
|
|
549
|
|
|
// Remove old certificate |
|
550
|
|
|
/* |
|
551
|
|
|
if($certMessage) { |
|
552
|
|
|
// Delete private key |
|
553
|
|
|
mapi_folder_deletemessages($root, array($certMessage[PR_ENTRYID])); |
|
554
|
|
|
|
|
555
|
|
|
// Delete public key |
|
556
|
|
|
$pubCert = getMAPICert($this->getStore, 'WebApp.Security.Public', getCertEmail($certMessage)); |
|
557
|
|
|
if($pubCert) { |
|
558
|
|
|
mapi_folder_deletemessages($root, array($pubCert[PR_ENTRYID])); |
|
559
|
|
|
} |
|
560
|
|
|
$message = _('New certificate uploaded'); |
|
561
|
|
|
} else { |
|
562
|
|
|
$message = _('Certificate uploaded'); |
|
563
|
|
|
}*/ |
|
564
|
|
|
|
|
565
|
|
|
$this->importCertificate($certificate, $publickeyData, 'private'); |
|
566
|
|
|
|
|
567
|
|
|
// Check if the user has a public key in the GAB. |
|
568
|
|
|
$store_props = mapi_getprops($this->getStore(), [PR_USER_ENTRYID]); |
|
569
|
|
|
$user = mapi_ab_openentry($GLOBALS['mapisession']->getAddressbook(), $store_props[PR_USER_ENTRYID]); |
|
|
|
|
|
|
570
|
|
|
|
|
571
|
|
|
$this->importCertificate($publickey, $publickeyData, 'public', true); |
|
572
|
|
|
} |
|
573
|
|
|
} |
|
574
|
|
|
|
|
575
|
|
|
$returnfiles = []; |
|
576
|
|
|
$returnfiles[] = [ |
|
577
|
|
|
'props' => [ |
|
578
|
|
|
'attach_num' => -1, |
|
579
|
|
|
'size' => $data['size'], |
|
580
|
|
|
'name' => $data['name'], |
|
581
|
|
|
'cert' => $saveCert, |
|
582
|
|
|
'cert_warning' => $message, |
|
583
|
|
|
], |
|
584
|
|
|
]; |
|
585
|
|
|
$data['returnfiles'] = $returnfiles; |
|
586
|
|
|
} |
|
587
|
|
|
} |
|
588
|
|
|
|
|
589
|
|
|
/** |
|
590
|
|
|
* This function handles the 'beforesend' hook which is triggered before sending the email. |
|
591
|
|
|
* If the PR_MESSAGE_CLASS is set to a signed email (IPM.Note.SMIME.Multipartsigned), this function |
|
592
|
|
|
* will convert the mapi message to RFC822, sign the eml and attach the signed email to the mapi message. |
|
593
|
|
|
* |
|
594
|
|
|
* @param {mixed} $data from php hook |
|
|
|
|
|
|
595
|
|
|
*/ |
|
596
|
|
|
public function onBeforeSend(&$data) { |
|
597
|
|
|
$store = $data['store']; |
|
|
|
|
|
|
598
|
|
|
$message = $data['message']; |
|
599
|
|
|
|
|
600
|
|
|
// Retrieve message class |
|
601
|
|
|
$props = mapi_getprops($message, [PR_MESSAGE_CLASS, PR_EC_IMAP_EMAIL]); |
|
602
|
|
|
$messageClass = $props[PR_MESSAGE_CLASS]; |
|
603
|
|
|
|
|
604
|
|
|
if (isset($messageClass) && (stripos($messageClass, 'IPM.Note.SMIME') !== false)) { |
|
605
|
|
|
// FIXME: for now return when we are going to sign but we don't have the passphrase set |
|
606
|
|
|
// This should never happen sign |
|
607
|
|
|
$encryptionStore = \EncryptionStore::getInstance(); |
|
608
|
|
|
if (($messageClass === 'IPM.Note.SMIME.SignedEncrypt' || $messageClass === 'IPM.Note.SMIME.MultipartSigned') && |
|
609
|
|
|
!$encryptionStore->get('smime')) { |
|
610
|
|
|
return; |
|
611
|
|
|
} |
|
612
|
|
|
// NOTE: setting message class to IPM.Note, so that mapi_inetmapi_imtoinet converts the message to plain email |
|
613
|
|
|
// and doesn't fail when handling the attachments. |
|
614
|
|
|
mapi_setprops($message, [PR_MESSAGE_CLASS => 'IPM.Note']); |
|
615
|
|
|
mapi_savechanges($message); |
|
616
|
|
|
|
|
617
|
|
|
// If RFC822-formatted stream is already available in PR_EC_IMAP_EMAIL property |
|
618
|
|
|
// than directly use it, generate otherwise. |
|
619
|
|
|
if (isset($props[PR_EC_IMAP_EMAIL]) || propIsError(PR_EC_IMAP_EMAIL, $props) == MAPI_E_NOT_ENOUGH_MEMORY) { |
|
620
|
|
|
// Stream the message to properly get the PR_EC_IMAP_EMAIL property |
|
621
|
|
|
$emlMessageStream = mapi_openproperty($message, PR_EC_IMAP_EMAIL, IID_IStream, 0, 0); |
|
622
|
|
|
} |
|
623
|
|
|
else { |
|
624
|
|
|
// Read the message as RFC822-formatted e-mail stream. |
|
625
|
|
|
$emlMessageStream = mapi_inetmapi_imtoinet($GLOBALS['mapisession']->getSession(), $GLOBALS['mapisession']->getAddressbook(), $message, []); |
|
626
|
|
|
} |
|
627
|
|
|
|
|
628
|
|
|
// Remove all attachments, since they are stored in the attached signed message |
|
629
|
|
|
$atable = mapi_message_getattachmenttable($message); |
|
630
|
|
|
$rows = mapi_table_queryallrows($atable, [PR_ATTACH_MIME_TAG, PR_ATTACH_NUM]); |
|
631
|
|
|
foreach ($rows as $row) { |
|
632
|
|
|
$attnum = $row[PR_ATTACH_NUM]; |
|
633
|
|
|
mapi_message_deleteattach($message, $attnum); |
|
634
|
|
|
} |
|
635
|
|
|
|
|
636
|
|
|
// create temporary files |
|
637
|
|
|
$tmpSendEmail = tempnam(sys_get_temp_dir(), true); |
|
|
|
|
|
|
638
|
|
|
$tmpSendSmimeEmail = tempnam(sys_get_temp_dir(), true); |
|
639
|
|
|
|
|
640
|
|
|
// Save message stream to a file |
|
641
|
|
|
$stat = mapi_stream_stat($emlMessageStream); |
|
642
|
|
|
|
|
643
|
|
|
$fhandle = fopen($tmpSendEmail, 'w'); |
|
644
|
|
|
$buffer = null; |
|
|
|
|
|
|
645
|
|
|
for ($i = 0; $i < $stat["cb"]; $i += BLOCK_SIZE) { |
|
|
|
|
|
|
646
|
|
|
// Write stream |
|
647
|
|
|
$buffer = mapi_stream_read($emlMessageStream, BLOCK_SIZE); |
|
648
|
|
|
fwrite($fhandle, $buffer, strlen($buffer)); |
|
649
|
|
|
} |
|
650
|
|
|
fclose($fhandle); |
|
651
|
|
|
|
|
652
|
|
|
// Create attachment for S/MIME message |
|
653
|
|
|
$signedAttach = mapi_message_createattach($message); |
|
654
|
|
|
$smimeProps = [ |
|
655
|
|
|
PR_ATTACH_LONG_FILENAME => 'smime.p7m', |
|
656
|
|
|
PR_DISPLAY_NAME => 'smime.p7m', |
|
657
|
|
|
PR_ATTACH_METHOD => ATTACH_BY_VALUE, |
|
658
|
|
|
PR_ATTACH_MIME_TAG => 'multipart/signed', |
|
659
|
|
|
PR_ATTACHMENT_HIDDEN => true, |
|
660
|
|
|
]; |
|
661
|
|
|
|
|
662
|
|
|
// Sign then Encrypt email |
|
663
|
|
|
switch ($messageClass) { |
|
664
|
|
|
case 'IPM.Note.SMIME.SignedEncrypt': |
|
665
|
|
|
$tmpFile = tempnam(sys_get_temp_dir(), true); |
|
666
|
|
|
$this->sign($tmpSendEmail, $tmpFile, $message, $signedAttach, $smimeProps); |
|
|
|
|
|
|
667
|
|
|
$this->encrypt($tmpFile, $tmpSendSmimeEmail, $message, $signedAttach, $smimeProps); |
|
|
|
|
|
|
668
|
|
|
unlink($tmpFile); |
|
669
|
|
|
break; |
|
670
|
|
|
|
|
671
|
|
|
case 'IPM.Note.SMIME.MultipartSigned': |
|
672
|
|
|
$this->sign($tmpSendEmail, $tmpSendSmimeEmail, $message, $signedAttach, $smimeProps); |
|
673
|
|
|
break; |
|
674
|
|
|
|
|
675
|
|
|
case 'IPM.Note.SMIME': |
|
676
|
|
|
$this->encrypt($tmpSendEmail, $tmpSendSmimeEmail, $message, $signedAttach, $smimeProps); |
|
|
|
|
|
|
677
|
|
|
break; |
|
678
|
|
|
} |
|
679
|
|
|
|
|
680
|
|
|
// Save the signed message as attachment of the send email |
|
681
|
|
|
$stream = mapi_openproperty($signedAttach, PR_ATTACH_DATA_BIN, IID_IStream, 0, MAPI_CREATE | MAPI_MODIFY); |
|
682
|
|
|
$handle = fopen($tmpSendSmimeEmail, 'r'); |
|
683
|
|
|
while (!feof($handle)) { |
|
684
|
|
|
$contents = fread($handle, BLOCK_SIZE); |
|
685
|
|
|
mapi_stream_write($stream, $contents); |
|
686
|
|
|
} |
|
687
|
|
|
fclose($handle); |
|
688
|
|
|
|
|
689
|
|
|
mapi_stream_commit($stream); |
|
690
|
|
|
|
|
691
|
|
|
// remove tmp files |
|
692
|
|
|
unlink($tmpSendSmimeEmail); |
|
693
|
|
|
unlink($tmpSendEmail); |
|
694
|
|
|
|
|
695
|
|
|
mapi_savechanges($signedAttach); |
|
696
|
|
|
mapi_savechanges($message); |
|
697
|
|
|
} |
|
698
|
|
|
} |
|
699
|
|
|
|
|
700
|
|
|
/** |
|
701
|
|
|
* Function to sign an email. |
|
702
|
|
|
* |
|
703
|
|
|
* @param object $infile File eml to be encrypted |
|
704
|
|
|
* @param object $outfile File |
|
705
|
|
|
* @param object $message Mapi Message Object |
|
706
|
|
|
* @param object $signedAttach |
|
707
|
|
|
* @param array $smimeProps |
|
708
|
|
|
*/ |
|
709
|
|
|
public function sign(&$infile, &$outfile, &$message, &$signedAttach, $smimeProps) { |
|
710
|
|
|
// Set mesageclass back to IPM.Note.SMIME.MultipartSigned |
|
711
|
|
|
mapi_setprops($message, [PR_MESSAGE_CLASS => 'IPM.Note.SMIME.MultipartSigned']); |
|
712
|
|
|
mapi_setprops($signedAttach, $smimeProps); |
|
713
|
|
|
|
|
714
|
|
|
// Obtain private certificate |
|
715
|
|
|
$encryptionStore = EncryptionStore::getInstance(); |
|
716
|
|
|
// Only the newest one is returned |
|
717
|
|
|
$certs = readPrivateCert($this->getStore(), $encryptionStore->get('smime')); |
|
718
|
|
|
|
|
719
|
|
|
// Retrieve intermediate CA's for verification, if available |
|
720
|
|
|
if (isset($certs['extracerts'])) { |
|
721
|
|
|
$tmpFile = tempnam(sys_get_temp_dir(), true); |
|
|
|
|
|
|
722
|
|
|
file_put_contents($tmpFile, implode('', $certs['extracerts'])); |
|
723
|
|
|
$ok = openssl_pkcs7_sign($infile, $outfile, $certs['cert'], [$certs['pkey'], ''], [], PKCS7_DETACHED, $tmpFile); |
|
|
|
|
|
|
724
|
|
|
if (!$ok) { |
|
725
|
|
|
Log::Write(LOGLEVEL_ERROR, sprintf("[smime] Unable to sign message with intermediate certificates, openssl error: '%s'", @openssl_error_string())); |
|
|
|
|
|
|
726
|
|
|
} |
|
727
|
|
|
unlink($tmpFile); |
|
728
|
|
|
} |
|
729
|
|
|
else { |
|
730
|
|
|
$ok = openssl_pkcs7_sign($infile, $outfile, $certs['cert'], [$certs['pkey'], ''], [], PKCS7_DETACHED); |
|
731
|
|
|
if (!$ok) { |
|
732
|
|
|
Log::Write(LOGLEVEL_ERROR, sprintf("[smime] Unable to sign message, openssl error: '%s'", @openssl_error_string())); |
|
733
|
|
|
} |
|
734
|
|
|
} |
|
735
|
|
|
} |
|
736
|
|
|
|
|
737
|
|
|
/** |
|
738
|
|
|
* Function to encrypt an email. |
|
739
|
|
|
* |
|
740
|
|
|
* @param object $infile File eml to be encrypted |
|
741
|
|
|
* @param object $outfile File |
|
742
|
|
|
* @param object $message Mapi Message Object |
|
743
|
|
|
* @param object $signedAttach |
|
744
|
|
|
* @param array $smimeProps |
|
745
|
|
|
*/ |
|
746
|
|
|
public function encrypt(&$infile, &$outfile, &$message, &$signedAttach, $smimeProps) { |
|
747
|
|
|
mapi_setprops($message, [PR_MESSAGE_CLASS => 'IPM.Note.SMIME']); |
|
748
|
|
|
$smimeProps[PR_ATTACH_MIME_TAG] = "application/pkcs7-mime"; |
|
749
|
|
|
mapi_setprops($signedAttach, $smimeProps); |
|
750
|
|
|
|
|
751
|
|
|
$publicCerts = $this->getPublicKeyForMessage($message); |
|
752
|
|
|
// Always append our own certificate, so that the mail can be decrypted in 'Sent items' |
|
753
|
|
|
// Prefer GAB public certificate above MAPI Store certificate. |
|
754
|
|
|
$email = $GLOBALS['mapisession']->getSMTPAddress(); |
|
755
|
|
|
$user = $this->getGABUser($email); |
|
756
|
|
|
$cert = $this->getGABCert($user); |
|
757
|
|
|
if (empty($cert)) { |
|
758
|
|
|
$cert = base64_decode($this->getPublicKey($email)); |
|
759
|
|
|
} |
|
760
|
|
|
|
|
761
|
|
|
if (!empty($cert)) { |
|
762
|
|
|
array_push($publicCerts, $cert); |
|
763
|
|
|
} |
|
764
|
|
|
|
|
765
|
|
|
$ok = openssl_pkcs7_encrypt($infile, $outfile, $publicCerts, [], 0, $this->cipher); |
|
|
|
|
|
|
766
|
|
|
if (!$ok) { |
|
767
|
|
|
error_log("[smime] unable to encrypt message, openssl error: " . print_r(@openssl_error_string(), true)); |
|
|
|
|
|
|
768
|
|
|
Log::Write(LOGLEVEL_ERROR, sprintf("[smime] unable to encrypt message, openssl error: '%s'", @openssl_error_string())); |
|
|
|
|
|
|
769
|
|
|
} |
|
770
|
|
|
$tmpEml = file_get_contents($outfile); |
|
|
|
|
|
|
771
|
|
|
|
|
772
|
|
|
// Grab the base64 data, since MAPI requires it saved as decoded base64 string. |
|
773
|
|
|
// FIXME: we can do better here |
|
774
|
|
|
$matches = explode("\n\n", $tmpEml); |
|
775
|
|
|
$base64 = str_replace("\n", "", $matches[1]); |
|
776
|
|
|
file_put_contents($outfile, base64_decode($base64)); |
|
|
|
|
|
|
777
|
|
|
|
|
778
|
|
|
// Empty the body |
|
779
|
|
|
mapi_setprops($message, [PR_BODY => ""]); |
|
780
|
|
|
} |
|
781
|
|
|
|
|
782
|
|
|
/** |
|
783
|
|
|
* Function which fetches the public certificates for all recipients (TO/CC/BCC) of a message |
|
784
|
|
|
* Always get the certificate of an address which expires last. |
|
785
|
|
|
* |
|
786
|
|
|
* @param object $message Mapi Message Object |
|
787
|
|
|
* |
|
788
|
|
|
* @return array of public certificates |
|
789
|
|
|
*/ |
|
790
|
|
|
public function getPublicKeyForMessage($message) { |
|
791
|
|
|
$recipientTable = mapi_message_getrecipienttable($message); |
|
792
|
|
|
$recips = mapi_table_queryallrows($recipientTable, [PR_SMTP_ADDRESS, PR_RECIPIENT_TYPE, PR_ADDRTYPE], [RES_OR, [ |
|
793
|
|
|
[RES_PROPERTY, |
|
794
|
|
|
[ |
|
795
|
|
|
RELOP => RELOP_EQ, |
|
796
|
|
|
ULPROPTAG => PR_RECIPIENT_TYPE, |
|
797
|
|
|
VALUE => MAPI_BCC, |
|
798
|
|
|
], |
|
799
|
|
|
], |
|
800
|
|
|
[RES_PROPERTY, |
|
801
|
|
|
[ |
|
802
|
|
|
RELOP => RELOP_EQ, |
|
803
|
|
|
ULPROPTAG => PR_RECIPIENT_TYPE, |
|
804
|
|
|
VALUE => MAPI_CC, |
|
805
|
|
|
], |
|
806
|
|
|
], |
|
807
|
|
|
[RES_PROPERTY, |
|
808
|
|
|
[ |
|
809
|
|
|
RELOP => RELOP_EQ, |
|
810
|
|
|
ULPROPTAG => PR_RECIPIENT_TYPE, |
|
811
|
|
|
VALUE => MAPI_TO, |
|
812
|
|
|
], |
|
813
|
|
|
], |
|
814
|
|
|
]]); |
|
815
|
|
|
|
|
816
|
|
|
$publicCerts = []; |
|
817
|
|
|
$storeCert = ''; |
|
|
|
|
|
|
818
|
|
|
$gabCert = ''; |
|
819
|
|
|
|
|
820
|
|
|
foreach ($recips as $recip) { |
|
821
|
|
|
$emailAddr = $recip[PR_SMTP_ADDRESS]; |
|
822
|
|
|
$addrType = $recip[PR_ADDRTYPE]; |
|
823
|
|
|
|
|
824
|
|
|
if ($addrType === "ZARAFA" || $addrType === "EX") { |
|
825
|
|
|
$user = $this->getGABUser($emailAddr); |
|
826
|
|
|
$gabCert = $this->getGABCert($user); |
|
827
|
|
|
} |
|
828
|
|
|
|
|
829
|
|
|
$storeCert = $this->getPublicKey($emailAddr); |
|
830
|
|
|
|
|
831
|
|
|
if (!empty($gabCert)) { |
|
832
|
|
|
array_push($publicCerts, $gabCert); |
|
833
|
|
|
} |
|
834
|
|
|
elseif (!empty($storeCert)) { |
|
835
|
|
|
array_push($publicCerts, base64_decode($storeCert)); |
|
836
|
|
|
} |
|
837
|
|
|
} |
|
838
|
|
|
|
|
839
|
|
|
return $publicCerts; |
|
840
|
|
|
} |
|
841
|
|
|
|
|
842
|
|
|
/** |
|
843
|
|
|
* Retrieves the public certificates stored in the MAPI UserStore and belonging to the |
|
844
|
|
|
* emailAdddress, returns "" if there is no certificate for that user. |
|
845
|
|
|
* |
|
846
|
|
|
* @param {String} emailAddress |
|
|
|
|
|
|
847
|
|
|
* @param mixed $emailAddress |
|
848
|
|
|
* @param mixed $multiple |
|
849
|
|
|
* |
|
850
|
|
|
* @return {String} $certificate |
|
|
|
|
|
|
851
|
|
|
*/ |
|
852
|
|
|
public function getPublicKey($emailAddress, $multiple = false) { |
|
853
|
|
|
$certificates = []; |
|
854
|
|
|
|
|
855
|
|
|
$certs = getMAPICert($this->getStore(), 'WebApp.Security.Public', $emailAddress); |
|
856
|
|
|
|
|
857
|
|
|
if ($certs && count($certs) > 0) { |
|
858
|
|
|
foreach ($certs as $cert) { |
|
859
|
|
|
$pubkey = mapi_msgstore_openentry($this->getStore(), $cert[PR_ENTRYID]); |
|
860
|
|
|
$certificate = ""; |
|
861
|
|
|
if ($pubkey != false) { |
|
862
|
|
|
// retrieve pkcs#11 certificate from body |
|
863
|
|
|
$stream = mapi_openproperty($pubkey, PR_BODY, IID_IStream, 0, 0); |
|
864
|
|
|
$stat = mapi_stream_stat($stream); |
|
865
|
|
|
mapi_stream_seek($stream, 0, STREAM_SEEK_SET); |
|
866
|
|
|
for ($i = 0; $i < $stat['cb']; $i += 1024) { |
|
867
|
|
|
$certificate .= mapi_stream_read($stream, 1024); |
|
868
|
|
|
} |
|
869
|
|
|
array_push($certificates, $certificate); |
|
870
|
|
|
} |
|
871
|
|
|
} |
|
872
|
|
|
} |
|
873
|
|
|
|
|
874
|
|
|
return $multiple ? $certificates : ($certificates[0] ?? ''); |
|
875
|
|
|
} |
|
876
|
|
|
|
|
877
|
|
|
/** |
|
878
|
|
|
* Function which is used to check if there is a public certificate for the provided emailAddress. |
|
879
|
|
|
* |
|
880
|
|
|
* @param {String} emailAddress emailAddres of recipient |
|
881
|
|
|
* @param {Boolean} gabUser is the user of PR_ADDRTYPE == ZARAFA |
|
|
|
|
|
|
882
|
|
|
* @param mixed $emailAddress |
|
883
|
|
|
* @param mixed $gabUser |
|
884
|
|
|
* |
|
885
|
|
|
* @return {Boolean} true if public certificate exists |
|
|
|
|
|
|
886
|
|
|
*/ |
|
887
|
|
|
public function pubcertExists($emailAddress, $gabUser = false) { |
|
888
|
|
|
if ($gabUser) { |
|
889
|
|
|
$user = $this->getGABUser($emailAddress); |
|
890
|
|
|
$gabCert = $this->getGABCert($user); |
|
891
|
|
|
if ($user && !empty($gabCert)) { |
|
892
|
|
|
return true; |
|
893
|
|
|
} |
|
894
|
|
|
} |
|
895
|
|
|
|
|
896
|
|
|
$root = mapi_msgstore_openentry($this->getStore(), null); |
|
897
|
|
|
$table = mapi_folder_getcontentstable($root, MAPI_ASSOCIATED); |
|
898
|
|
|
|
|
899
|
|
|
// Restriction for public certificates which are from the recipient of the email, are active and have the correct message_class |
|
900
|
|
|
$restrict = [RES_AND, [ |
|
901
|
|
|
[RES_PROPERTY, |
|
902
|
|
|
[ |
|
903
|
|
|
RELOP => RELOP_EQ, |
|
904
|
|
|
ULPROPTAG => PR_MESSAGE_CLASS, |
|
905
|
|
|
VALUE => [PR_MESSAGE_CLASS => "WebApp.Security.Public"], |
|
906
|
|
|
], |
|
907
|
|
|
], |
|
908
|
|
|
[RES_PROPERTY, |
|
909
|
|
|
[ |
|
910
|
|
|
RELOP => RELOP_EQ, |
|
911
|
|
|
ULPROPTAG => PR_SUBJECT, |
|
912
|
|
|
VALUE => [PR_SUBJECT => $emailAddress], |
|
913
|
|
|
], |
|
914
|
|
|
], |
|
915
|
|
|
]]; |
|
916
|
|
|
mapi_table_restrict($table, $restrict, TBL_BATCH); |
|
917
|
|
|
mapi_table_sort($table, [PR_MESSAGE_DELIVERY_TIME => TABLE_SORT_DESCEND], TBL_BATCH); |
|
918
|
|
|
|
|
919
|
|
|
$rows = mapi_table_queryallrows($table, [PR_SUBJECT, PR_ENTRYID, PR_MESSAGE_DELIVERY_TIME, PR_CLIENT_SUBMIT_TIME], $restrict); |
|
920
|
|
|
|
|
921
|
|
|
return !empty($rows); |
|
922
|
|
|
} |
|
923
|
|
|
|
|
924
|
|
|
/** |
|
925
|
|
|
* Helper functions which extracts the errors from openssl_error_string() |
|
926
|
|
|
* Example error from openssl_error_string(): error:21075075:PKCS7 routines:PKCS7_verify:certificate verify error |
|
927
|
|
|
* Note that openssl_error_string() returns an error when verifying is successful, this is a bug in PHP https://bugs.php.net/bug.php?id=50713. |
|
928
|
|
|
* |
|
929
|
|
|
* @return {String} |
|
|
|
|
|
|
930
|
|
|
*/ |
|
931
|
|
|
public function extract_openssl_error() { |
|
932
|
|
|
// TODO: should catch more errors by using while($error = @openssl_error_string()) |
|
933
|
|
|
$this->openssl_error = @openssl_error_string(); |
|
934
|
|
|
$openssl_error_code = 0; |
|
935
|
|
|
if ($this->openssl_error) { |
|
936
|
|
|
$openssl_error_list = explode(":", $this->openssl_error); |
|
937
|
|
|
$openssl_error_code = $openssl_error_list[1]; |
|
938
|
|
|
} |
|
939
|
|
|
|
|
940
|
|
|
return $openssl_error_code; |
|
941
|
|
|
} |
|
942
|
|
|
|
|
943
|
|
|
/** |
|
944
|
|
|
* Extract the intermediate certificates from the signed email. |
|
945
|
|
|
* Uses openssl_pkcs7_verify to extract the PKCS#7 blob and then converts the PKCS#7 blob to |
|
946
|
|
|
* X509 certificates using openssl_pkcs7_read. |
|
947
|
|
|
* |
|
948
|
|
|
* @param string $emlfile - the s/mime message |
|
949
|
|
|
* |
|
950
|
|
|
* @return array a list of extracted intermediate certificates |
|
951
|
|
|
*/ |
|
952
|
|
|
public function extractCAs($emlfile) { |
|
953
|
|
|
$cas = []; |
|
954
|
|
|
$certfile = tempnam(sys_get_temp_dir(), true); |
|
|
|
|
|
|
955
|
|
|
$outfile = tempnam(sys_get_temp_dir(), true); |
|
956
|
|
|
$p7bfile = tempnam(sys_get_temp_dir(), true); |
|
957
|
|
|
openssl_pkcs7_verify($emlfile, PKCS7_NOVERIFY, $certfile); |
|
958
|
|
|
openssl_pkcs7_verify($emlfile, PKCS7_NOVERIFY, $certfile, [], $certfile, $outfile, $p7bfile); |
|
959
|
|
|
|
|
960
|
|
|
$p7b = file_get_contents($p7bfile); |
|
961
|
|
|
|
|
962
|
|
|
openssl_pkcs7_read($p7b, $cas); |
|
963
|
|
|
unlink($certfile); |
|
964
|
|
|
unlink($outfile); |
|
965
|
|
|
unlink($p7bfile); |
|
966
|
|
|
|
|
967
|
|
|
return $cas; |
|
968
|
|
|
} |
|
969
|
|
|
|
|
970
|
|
|
/** |
|
971
|
|
|
* Imports certificate in the MAPI Root Associated Folder. |
|
972
|
|
|
* |
|
973
|
|
|
* Private key, always insert certificate |
|
974
|
|
|
* Public key, check if we already have one stored |
|
975
|
|
|
* |
|
976
|
|
|
* @param string $cert certificate body as a string |
|
977
|
|
|
* @param mixed $certData an array with the parsed certificate data |
|
978
|
|
|
* @param string $type certificate type, default 'public' |
|
979
|
|
|
* @param bool $force force import the certificate even though we have one already stored in the MAPI Store. |
|
980
|
|
|
* FIXME: remove $force in the future and move the check for newer certificate in this function. |
|
981
|
|
|
*/ |
|
982
|
|
|
public function importCertificate($cert, $certData, $type = 'public', $force = false) { |
|
983
|
|
|
$certEmail = getCertEmail($certData); |
|
984
|
|
|
if (!$this->pubcertExists($certEmail) || $force || $type === 'private') { |
|
985
|
|
|
$issued_by = ""; |
|
986
|
|
|
foreach (array_keys($certData['issuer']) as $key) { |
|
987
|
|
|
$issued_by .= $key . '=' . $certData['issuer'][$key] . "\n"; |
|
988
|
|
|
} |
|
989
|
|
|
|
|
990
|
|
|
$root = mapi_msgstore_openentry($this->getStore(), null); |
|
991
|
|
|
$assocMessage = mapi_folder_createmessage($root, MAPI_ASSOCIATED); |
|
992
|
|
|
// TODO: write these properties down. |
|
993
|
|
|
mapi_setprops($assocMessage, [ |
|
994
|
|
|
PR_SUBJECT => $certEmail, |
|
995
|
|
|
PR_MESSAGE_CLASS => $type == 'public' ? 'WebApp.Security.Public' : 'WebApp.Security.Private', |
|
996
|
|
|
PR_MESSAGE_DELIVERY_TIME => $certData['validTo_time_t'], |
|
997
|
|
|
PR_CLIENT_SUBMIT_TIME => $certData['validFrom_time_t'], |
|
998
|
|
|
PR_SENDER_NAME => $certData['serialNumber'], // serial |
|
999
|
|
|
PR_SENDER_EMAIL_ADDRESS => $issued_by, // Issuer To |
|
1000
|
|
|
PR_SUBJECT_PREFIX => '', |
|
1001
|
|
|
PR_RECEIVED_BY_NAME => $this->fingerprint_cert($cert, 'sha1'), // SHA1 Fingerprint |
|
1002
|
|
|
PR_INTERNET_MESSAGE_ID => $this->fingerprint_cert($cert), // MD5 FingerPrint |
|
1003
|
|
|
]); |
|
1004
|
|
|
// Save attachment |
|
1005
|
|
|
$msgBody = base64_encode($cert); |
|
1006
|
|
|
$stream = mapi_openproperty($assocMessage, PR_BODY, IID_IStream, 0, MAPI_CREATE | MAPI_MODIFY); |
|
1007
|
|
|
mapi_stream_setsize($stream, strlen($msgBody)); |
|
1008
|
|
|
mapi_stream_write($stream, $msgBody); |
|
1009
|
|
|
mapi_stream_commit($stream); |
|
1010
|
|
|
mapi_message_savechanges($assocMessage); |
|
1011
|
|
|
} |
|
1012
|
|
|
} |
|
1013
|
|
|
|
|
1014
|
|
|
/** |
|
1015
|
|
|
* Function which returns the fingerprint (hash) of the certificate. |
|
1016
|
|
|
* |
|
1017
|
|
|
* @param {string} $cert certificate body as a string |
|
|
|
|
|
|
1018
|
|
|
* @param {string} $hash optional hash algorithm |
|
1019
|
|
|
* @param mixed $body |
|
1020
|
|
|
*/ |
|
1021
|
|
|
public function fingerprint_cert($body, $hash = 'md5') { |
|
1022
|
|
|
// TODO: Note for PHP > 5.6 we can use openssl_x509_fingerprint |
|
1023
|
|
|
$body = str_replace('-----BEGIN CERTIFICATE-----', '', $body); |
|
1024
|
|
|
$body = str_replace('-----END CERTIFICATE-----', '', $body); |
|
1025
|
|
|
$body = base64_decode($body); |
|
1026
|
|
|
|
|
1027
|
|
|
if ($hash === 'sha1') { |
|
1028
|
|
|
$fingerprint = sha1($body); |
|
1029
|
|
|
} |
|
1030
|
|
|
else { |
|
1031
|
|
|
$fingerprint = md5($body); |
|
1032
|
|
|
} |
|
1033
|
|
|
|
|
1034
|
|
|
// Format 1000AB as 10:00:AB |
|
1035
|
|
|
return strtoupper(implode(':', str_split($fingerprint, 2))); |
|
|
|
|
|
|
1036
|
|
|
} |
|
1037
|
|
|
|
|
1038
|
|
|
/** |
|
1039
|
|
|
* Retrieve the GAB User. |
|
1040
|
|
|
* |
|
1041
|
|
|
* FIXME: ideally this would be a public function in grommunio Web. |
|
1042
|
|
|
* |
|
1043
|
|
|
* @param string $email the email address of the user |
|
1044
|
|
|
* |
|
1045
|
|
|
* @return mixed $user boolean if false else MAPIObject |
|
1046
|
|
|
*/ |
|
1047
|
|
|
public function getGABUser($email) { |
|
1048
|
|
|
$addrbook = $GLOBALS["mapisession"]->getAddressbook(); |
|
1049
|
|
|
$userArr = [[PR_DISPLAY_NAME => $email]]; |
|
1050
|
|
|
$user = false; |
|
|
|
|
|
|
1051
|
|
|
|
|
1052
|
|
|
try { |
|
1053
|
|
|
$user = mapi_ab_resolvename($addrbook, $userArr, EMS_AB_ADDRESS_LOOKUP); |
|
1054
|
|
|
$user = mapi_ab_openentry($addrbook, $user[0][PR_ENTRYID]); |
|
1055
|
|
|
} |
|
1056
|
|
|
catch (MAPIException $e) { |
|
1057
|
|
|
$e->setHandled(); |
|
1058
|
|
|
} |
|
1059
|
|
|
|
|
1060
|
|
|
return $user; |
|
1061
|
|
|
} |
|
1062
|
|
|
|
|
1063
|
|
|
/** |
|
1064
|
|
|
* Retrieve the PR_EMS_AB_TAGGED_X509_CERT. |
|
1065
|
|
|
* |
|
1066
|
|
|
* @param MAPIObject $user the GAB user |
|
|
|
|
|
|
1067
|
|
|
* |
|
1068
|
|
|
* @return string $cert the certificate, empty if not found |
|
1069
|
|
|
*/ |
|
1070
|
|
|
public function getGABCert($user) { |
|
1071
|
|
|
$cert = ''; |
|
1072
|
|
|
$userCertArray = mapi_getprops($user, [PR_EMS_AB_TAGGED_X509_CERT]); |
|
1073
|
|
|
if (isset($userCertArray[PR_EMS_AB_TAGGED_X509_CERT])) { |
|
1074
|
|
|
$cert = der2pem($userCertArray[PR_EMS_AB_TAGGED_X509_CERT][0]); |
|
1075
|
|
|
} |
|
1076
|
|
|
|
|
1077
|
|
|
return $cert; |
|
1078
|
|
|
} |
|
1079
|
|
|
|
|
1080
|
|
|
/** |
|
1081
|
|
|
* Called when the core Settings class is initialized and ready to accept sysadmin default |
|
1082
|
|
|
* settings. Registers the sysadmin defaults for the example plugin. |
|
1083
|
|
|
* |
|
1084
|
|
|
* @param {mixed} $data Reference to the data of the triggered hook |
|
|
|
|
|
|
1085
|
|
|
*/ |
|
1086
|
|
|
public function onBeforeSettingsInit(&$data) { |
|
1087
|
|
|
$data['settingsObj']->addSysAdminDefaults([ |
|
1088
|
|
|
'zarafa' => [ |
|
1089
|
|
|
'v1' => [ |
|
1090
|
|
|
'plugins' => [ |
|
1091
|
|
|
'smime' => [ |
|
1092
|
|
|
'enable' => defined('PLUGIN_SMIME_USER_DEFAULT_ENABLE_SMIME') && PLUGIN_SMIME_USER_DEFAULT_ENABLE_SMIME, |
|
1093
|
|
|
'passphrase_cache' => defined('PLUGIN_SMIME_PASSPHRASE_REMEMBER_BROWSER') && PLUGIN_SMIME_PASSPHRASE_REMEMBER_BROWSER, |
|
1094
|
|
|
], |
|
1095
|
|
|
], |
|
1096
|
|
|
], |
|
1097
|
|
|
], |
|
1098
|
|
|
]); |
|
1099
|
|
|
} |
|
1100
|
|
|
|
|
1101
|
|
|
/** |
|
1102
|
|
|
* Get sender structure of the MAPI Message. |
|
1103
|
|
|
* |
|
1104
|
|
|
* @param mapimessage $mapiMessage MAPI Message resource from which we need to get the sender |
|
|
|
|
|
|
1105
|
|
|
* |
|
1106
|
|
|
* @return array with properties |
|
1107
|
|
|
*/ |
|
1108
|
|
|
public function getSenderAddress($mapiMessage) { |
|
1109
|
|
|
if (!method_exists($GLOBALS['operations'], 'getSenderAddress')) { |
|
1110
|
|
|
$messageProps = mapi_getprops($mapiMessage, [PR_SENT_REPRESENTING_ENTRYID, PR_SENDER_ENTRYID]); |
|
1111
|
|
|
$senderEntryID = isset($messageProps[PR_SENT_REPRESENTING_ENTRYID]) ? $messageProps[PR_SENT_REPRESENTING_ENTRYID] : $messageProps[PR_SENDER_ENTRYID]; |
|
1112
|
|
|
|
|
1113
|
|
|
try { |
|
1114
|
|
|
$senderUser = mapi_ab_openentry($GLOBALS["mapisession"]->getAddressbook(), $senderEntryID); |
|
1115
|
|
|
if ($senderUser) { |
|
1116
|
|
|
$userprops = mapi_getprops($senderUser, [PR_ADDRTYPE, PR_DISPLAY_NAME, PR_EMAIL_ADDRESS, PR_SMTP_ADDRESS, PR_OBJECT_TYPE, PR_RECIPIENT_TYPE, PR_DISPLAY_TYPE, PR_DISPLAY_TYPE_EX, PR_ENTRYID]); |
|
1117
|
|
|
|
|
1118
|
|
|
$senderStructure = []; |
|
1119
|
|
|
$senderStructure["props"]['entryid'] = bin2hex($userprops[PR_ENTRYID]); |
|
1120
|
|
|
$senderStructure["props"]['display_name'] = isset($userprops[PR_DISPLAY_NAME]) ? $userprops[PR_DISPLAY_NAME] : ''; |
|
1121
|
|
|
$senderStructure["props"]['email_address'] = isset($userprops[PR_EMAIL_ADDRESS]) ? $userprops[PR_EMAIL_ADDRESS] : ''; |
|
1122
|
|
|
$senderStructure["props"]['smtp_address'] = isset($userprops[PR_SMTP_ADDRESS]) ? $userprops[PR_SMTP_ADDRESS] : ''; |
|
1123
|
|
|
$senderStructure["props"]['address_type'] = isset($userprops[PR_ADDRTYPE]) ? $userprops[PR_ADDRTYPE] : ''; |
|
1124
|
|
|
$senderStructure["props"]['object_type'] = $userprops[PR_OBJECT_TYPE]; |
|
1125
|
|
|
$senderStructure["props"]['recipient_type'] = MAPI_TO; |
|
1126
|
|
|
$senderStructure["props"]['display_type'] = isset($userprops[PR_DISPLAY_TYPE]) ? $userprops[PR_DISPLAY_TYPE] : MAPI_MAILUSER; |
|
1127
|
|
|
$senderStructure["props"]['display_type_ex'] = isset($userprops[PR_DISPLAY_TYPE_EX]) ? $userprops[PR_DISPLAY_TYPE_EX] : MAPI_MAILUSER; |
|
1128
|
|
|
} |
|
1129
|
|
|
} |
|
1130
|
|
|
catch (MAPIException $e) { |
|
1131
|
|
|
Log::write(LOGLEVEL_ERROR, sprintf("%s %s", $e, $userProps[PR_SENT_REPRESENTING_NAME])); |
|
|
|
|
|
|
1132
|
|
|
} |
|
1133
|
|
|
|
|
1134
|
|
|
return $senderStructure; |
|
|
|
|
|
|
1135
|
|
|
} |
|
1136
|
|
|
|
|
1137
|
|
|
return $GLOBALS["operations"]->getSenderAddress($mapiMessage); |
|
1138
|
|
|
} |
|
1139
|
|
|
} |
|
1140
|
|
|
|
grommunio /
grommunio-web
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