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-rw-r--r--plugins/enigma/lib/enigma_driver_gnupg.php305
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diff --git a/plugins/enigma/lib/enigma_driver_gnupg.php b/plugins/enigma/lib/enigma_driver_gnupg.php
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+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | GnuPG (PGP) 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> |
+ +-------------------------------------------------------------------------+
+*/
+
+require_once 'Crypt/GPG.php';
+
+class enigma_driver_gnupg 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 = $this->rc->config->get('enigma_pgp_homedir', INSTALL_PATH . '/plugins/enigma/home');
+
+ if (!$homedir)
+ return new enigma_error(enigma_error::E_INTERNAL,
+ "Option 'enigma_pgp_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;
+
+ // Create Crypt_GPG object
+ try {
+ $this->gpg = new Crypt_GPG(array(
+ 'homedir' => $this->homedir,
+// 'debug' => true,
+ ));
+ }
+ catch (Exception $e) {
+ return $this->get_error_from_exception($e);
+ }
+ }
+
+ function encrypt($text, $keys)
+ {
+/*
+ foreach ($keys as $key) {
+ $this->gpg->addEncryptKey($key);
+ }
+ $enc = $this->gpg->encrypt($text);
+ return $enc;
+*/
+ }
+
+ function decrypt($text, $key, $passwd)
+ {
+// $this->gpg->addDecryptKey($key, $passwd);
+ try {
+ $dec = $this->gpg->decrypt($text);
+ return $dec;
+ }
+ catch (Exception $e) {
+ return $this->get_error_from_exception($e);
+ }
+ }
+
+ function sign($text, $key, $passwd)
+ {
+/*
+ $this->gpg->addSignKey($key, $passwd);
+ $signed = $this->gpg->sign($text, Crypt_GPG::SIGN_MODE_DETACHED);
+ return $signed;
+*/
+ }
+
+ function verify($text, $signature)
+ {
+ try {
+ $verified = $this->gpg->verify($text, $signature);
+ return $this->parse_signature($verified[0]);
+ }
+ catch (Exception $e) {
+ return $this->get_error_from_exception($e);
+ }
+ }
+
+ public function import($content, $isfile=false)
+ {
+ try {
+ if ($isfile)
+ return $this->gpg->importKeyFile($content);
+ else
+ return $this->gpg->importKey($content);
+ }
+ catch (Exception $e) {
+ return $this->get_error_from_exception($e);
+ }
+ }
+
+ public function list_keys($pattern='')
+ {
+ try {
+ $keys = $this->gpg->getKeys($pattern);
+ $result = array();
+//print_r($keys);
+ foreach ($keys as $idx => $key) {
+ $result[] = $this->parse_key($key);
+ unset($keys[$idx]);
+ }
+//print_r($result);
+ return $result;
+ }
+ catch (Exception $e) {
+ return $this->get_error_from_exception($e);
+ }
+ }
+
+ public function get_key($keyid)
+ {
+ $list = $this->list_keys($keyid);
+
+ if (is_array($list))
+ return array_shift($list);
+
+ // error
+ return $list;
+ }
+
+ public function gen_key($data)
+ {
+ }
+
+ public function del_key($keyid)
+ {
+// $this->get_key($keyid);
+
+
+ }
+
+ public function del_privkey($keyid)
+ {
+ try {
+ $this->gpg->deletePrivateKey($keyid);
+ return true;
+ }
+ catch (Exception $e) {
+ return $this->get_error_from_exception($e);
+ }
+ }
+
+ public function del_pubkey($keyid)
+ {
+ try {
+ $this->gpg->deletePublicKey($keyid);
+ return true;
+ }
+ catch (Exception $e) {
+ return $this->get_error_from_exception($e);
+ }
+ }
+
+ /**
+ * Converts Crypt_GPG exception into Enigma's error object
+ *
+ * @param mixed Exception object
+ *
+ * @return enigma_error Error object
+ */
+ private function get_error_from_exception($e)
+ {
+ $data = array();
+
+ if ($e instanceof Crypt_GPG_KeyNotFoundException) {
+ $error = enigma_error::E_KEYNOTFOUND;
+ $data['id'] = $e->getKeyId();
+ }
+ else if ($e instanceof Crypt_GPG_BadPassphraseException) {
+ $error = enigma_error::E_BADPASS;
+ $data['bad'] = $e->getBadPassphrases();
+ $data['missing'] = $e->getMissingPassphrases();
+ }
+ else if ($e instanceof Crypt_GPG_NoDataException)
+ $error = enigma_error::E_NODATA;
+ else if ($e instanceof Crypt_GPG_DeletePrivateKeyException)
+ $error = enigma_error::E_DELKEY;
+ else
+ $error = enigma_error::E_INTERNAL;
+
+ $msg = $e->getMessage();
+
+ return new enigma_error($error, $msg, $data);
+ }
+
+ /**
+ * Converts Crypt_GPG_Signature object into Enigma's signature object
+ *
+ * @param Crypt_GPG_Signature Signature object
+ *
+ * @return enigma_signature Signature object
+ */
+ private function parse_signature($sig)
+ {
+ $user = $sig->getUserId();
+
+ $data = new enigma_signature();
+ $data->id = $sig->getId();
+ $data->valid = $sig->isValid();
+ $data->fingerprint = $sig->getKeyFingerprint();
+ $data->created = $sig->getCreationDate();
+ $data->expires = $sig->getExpirationDate();
+ $data->name = $user->getName();
+ $data->comment = $user->getComment();
+ $data->email = $user->getEmail();
+
+ return $data;
+ }
+
+ /**
+ * Converts Crypt_GPG_Key object into Enigma's key object
+ *
+ * @param Crypt_GPG_Key Key object
+ *
+ * @return enigma_key Key object
+ */
+ private function parse_key($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;
+ }
+}