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Diffstat (limited to 'plugins/enigma/lib/enigma_driver_phpssl.php')
-rw-r--r--plugins/enigma/lib/enigma_driver_phpssl.php238
1 files changed, 238 insertions, 0 deletions
diff --git a/plugins/enigma/lib/enigma_driver_phpssl.php b/plugins/enigma/lib/enigma_driver_phpssl.php
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+++ b/plugins/enigma/lib/enigma_driver_phpssl.php
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+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | S/MIME driver for the Enigma Plugin |
+ | |
+ | This program is free software; you can redistribute it and/or modify |
+ | it under the terms of the GNU General Public License version 2 |
+ | as published by the Free Software Foundation. |
+ | |
+ | This program is distributed in the hope that it will be useful, |
+ | but WITHOUT ANY WARRANTY; without even the implied warranty of |
+ | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
+ | GNU General Public License for more details. |
+ | |
+ | You should have received a copy of the GNU General Public License along |
+ | with this program; if not, write to the Free Software Foundation, Inc., |
+ | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
+ | |
+ +-------------------------------------------------------------------------+
+ | Author: Aleksander Machniak <alec@alec.pl> |
+ +-------------------------------------------------------------------------+
+*/
+
+class enigma_driver_phpssl extends enigma_driver
+{
+ private $rc;
+ //private $gpg;
+ private $homedir;
+ private $user;
+
+ function __construct($user)
+ {
+ $rcmail = rcmail::get_instance();
+ $this->rc = $rcmail;
+ $this->user = $user;
+ }
+
+ /**
+ * Driver initialization and environment checking.
+ * Should only return critical errors.
+ *
+ * @return mixed NULL on success, enigma_error on failure
+ */
+ function init()
+ {
+ $homedir = $this->rc->config->get('enigma_smime_homedir', INSTALL_PATH . '/plugins/enigma/home');
+
+ if (!$homedir)
+ return new enigma_error(enigma_error::E_INTERNAL,
+ "Option 'enigma_smime_homedir' not specified");
+
+ // check if homedir exists (create it if not) and is readable
+ if (!file_exists($homedir))
+ return new enigma_error(enigma_error::E_INTERNAL,
+ "Keys directory doesn't exists: $homedir");
+ if (!is_writable($homedir))
+ return new enigma_error(enigma_error::E_INTERNAL,
+ "Keys directory isn't writeable: $homedir");
+
+ $homedir = $homedir . '/' . $this->user;
+
+ // check if user's homedir exists (create it if not) and is readable
+ if (!file_exists($homedir))
+ mkdir($homedir, 0700);
+
+ if (!file_exists($homedir))
+ return new enigma_error(enigma_error::E_INTERNAL,
+ "Unable to create keys directory: $homedir");
+ if (!is_writable($homedir))
+ return new enigma_error(enigma_error::E_INTERNAL,
+ "Unable to write to keys directory: $homedir");
+
+ $this->homedir = $homedir;
+
+ }
+
+ function encrypt($text, $keys)
+ {
+ }
+
+ function decrypt($text, $key, $passwd)
+ {
+ }
+
+ function sign($text, $key, $passwd)
+ {
+ }
+
+ function verify($struct, $message)
+ {
+ // use common temp dir
+ $temp_dir = $this->rc->config->get('temp_dir');
+ $msg_file = tempnam($temp_dir, 'rcmMsg');
+ $cert_file = tempnam($temp_dir, 'rcmCert');
+
+ $fh = fopen($msg_file, "w");
+ if ($struct->mime_id) {
+ $message->get_part_content($struct->mime_id, $fh, true, 0, false);
+ }
+ else {
+ $this->rc->storage->get_raw_body($message->uid, $fh);
+ }
+ fclose($fh);
+
+ // @TODO: use stored certificates
+
+ // try with certificate verification
+ $sig = openssl_pkcs7_verify($msg_file, 0, $cert_file);
+ $validity = true;
+
+ if ($sig !== true) {
+ // try without certificate verification
+ $sig = openssl_pkcs7_verify($msg_file, PKCS7_NOVERIFY, $cert_file);
+ $validity = enigma_error::E_UNVERIFIED;
+ }
+
+ if ($sig === true) {
+ $sig = $this->parse_sig_cert($cert_file, $validity);
+ }
+ else {
+ $errorstr = $this->get_openssl_error();
+ $sig = new enigma_error(enigma_error::E_INTERNAL, $errorstr);
+ }
+
+ // remove temp files
+ @unlink($msg_file);
+ @unlink($cert_file);
+
+ return $sig;
+ }
+
+ public function import($content, $isfile=false)
+ {
+ }
+
+ public function list_keys($pattern='')
+ {
+ }
+
+ public function get_key($keyid)
+ {
+ }
+
+ public function gen_key($data)
+ {
+ }
+
+ public function del_key($keyid)
+ {
+ }
+
+ public function del_privkey($keyid)
+ {
+ }
+
+ public function del_pubkey($keyid)
+ {
+ }
+
+ /**
+ * Converts Crypt_GPG_Key object into Enigma's key object
+ *
+ * @param Crypt_GPG_Key Key object
+ *
+ * @return enigma_key Key object
+ */
+ private function parse_key($key)
+ {
+/*
+ $ekey = new enigma_key();
+
+ foreach ($key->getUserIds() as $idx => $user) {
+ $id = new enigma_userid();
+ $id->name = $user->getName();
+ $id->comment = $user->getComment();
+ $id->email = $user->getEmail();
+ $id->valid = $user->isValid();
+ $id->revoked = $user->isRevoked();
+
+ $ekey->users[$idx] = $id;
+ }
+
+ $ekey->name = trim($ekey->users[0]->name . ' <' . $ekey->users[0]->email . '>');
+
+ foreach ($key->getSubKeys() as $idx => $subkey) {
+ $skey = new enigma_subkey();
+ $skey->id = $subkey->getId();
+ $skey->revoked = $subkey->isRevoked();
+ $skey->created = $subkey->getCreationDate();
+ $skey->expires = $subkey->getExpirationDate();
+ $skey->fingerprint = $subkey->getFingerprint();
+ $skey->has_private = $subkey->hasPrivate();
+ $skey->can_sign = $subkey->canSign();
+ $skey->can_encrypt = $subkey->canEncrypt();
+
+ $ekey->subkeys[$idx] = $skey;
+ };
+
+ $ekey->id = $ekey->subkeys[0]->id;
+
+ return $ekey;
+*/
+ }
+
+ private function get_openssl_error()
+ {
+ $tmp = array();
+ while ($errorstr = openssl_error_string()) {
+ $tmp[] = $errorstr;
+ }
+
+ return join("\n", array_values($tmp));
+ }
+
+ private function parse_sig_cert($file, $validity)
+ {
+ $cert = openssl_x509_parse(file_get_contents($file));
+
+ if (empty($cert) || empty($cert['subject'])) {
+ $errorstr = $this->get_openssl_error();
+ return new enigma_error(enigm_error::E_INTERNAL, $errorstr);
+ }
+
+ $data = new enigma_signature();
+
+ $data->id = $cert['hash']; //?
+ $data->valid = $validity;
+ $data->fingerprint = $cert['serialNumber'];
+ $data->created = $cert['validFrom_time_t'];
+ $data->expires = $cert['validTo_time_t'];
+ $data->name = $cert['subject']['CN'];
+// $data->comment = '';
+ $data->email = $cert['subject']['emailAddress'];
+
+ return $data;
+ }
+
+}