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Diffstat (limited to 'enigma/enigma.php')
| -rw-r--r-- | enigma/enigma.php | 485 |
1 files changed, 485 insertions, 0 deletions
diff --git a/enigma/enigma.php b/enigma/enigma.php new file mode 100644 index 0000000..870b923 --- /dev/null +++ b/enigma/enigma.php @@ -0,0 +1,485 @@ +<?php +/* + +-------------------------------------------------------------------------+ + | Enigma Plugin for Roundcube | + | Version 0.1 | + | | + | 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> | + +-------------------------------------------------------------------------+ +*/ + +/* + This class contains only hooks and action handlers. + Most plugin logic is placed in enigma_engine and enigma_ui classes. +*/ + +class enigma extends rcube_plugin +{ + public $task = 'mail|settings'; + public $rc; + public $engine; + + private $env_loaded; + private $message; + private $keys_parts = array(); + private $keys_bodies = array(); + + + /** + * Plugin initialization. + */ + function init() + { + $rcmail = rcmail::get_instance(); + $this->rc = $rcmail; + + $section = rcube_utils::get_input_value('_section', rcube_utils::INPUT_GET); + + if ($this->rc->task == 'mail') { + // message parse/display hooks + $this->add_hook('message_part_structure', array($this, 'parse_structure')); + $this->add_hook('message_body_prefix', array($this, 'status_message')); + + // message displaying + if ($rcmail->action == 'show' || $rcmail->action == 'preview') { + $this->add_hook('message_load', array($this, 'message_load')); + $this->add_hook('template_object_messagebody', array($this, 'message_output')); + $this->register_action('plugin.enigmaimport', array($this, 'import_file')); + } + // message composing + else if ($rcmail->action == 'compose') { + $this->load_ui(); + $this->ui->init($section); + } + // message sending (and draft storing) + else if ($rcmail->action == 'sendmail') { + //$this->add_hook('outgoing_message_body', array($this, 'msg_encode')); + //$this->add_hook('outgoing_message_body', array($this, 'msg_sign')); + } + } + else if ($this->rc->task == 'settings') { + // add hooks for Enigma settings + $this->add_hook('preferences_sections_list', array($this, 'preferences_section')); + $this->add_hook('preferences_list', array($this, 'preferences_list')); + $this->add_hook('preferences_save', array($this, 'preferences_save')); + + // register handler for keys/certs management + $this->register_action('plugin.enigma', array($this, 'preferences_ui')); + + // grab keys/certs management iframe requests + if ($this->rc->action == 'edit-prefs' && preg_match('/^enigma(certs|keys)/', $section)) { + $this->load_ui(); + $this->ui->init($section); + } + } + } + + /** + * Plugin environment initialization. + */ + function load_env() + { + if ($this->env_loaded) + return; + + $this->env_loaded = true; + + // Add include path for Enigma classes and drivers + $include_path = $this->home . '/lib' . PATH_SEPARATOR; + $include_path .= ini_get('include_path'); + set_include_path($include_path); + + // load the Enigma plugin configuration + $this->load_config(); + + // include localization (if wasn't included before) + $this->add_texts('localization/'); + } + + /** + * Plugin UI initialization. + */ + function load_ui() + { + if ($this->ui) + return; + + // load config/localization + $this->load_env(); + + // Load UI + $this->ui = new enigma_ui($this, $this->home); + } + + /** + * Plugin engine initialization. + */ + function load_engine() + { + if ($this->engine) + return; + + // load config/localization + $this->load_env(); + + $this->engine = new enigma_engine($this); + } + + /** + * Handler for message_part_structure hook. + * Called for every part of the message. + * + * @param array Original parameters + * + * @return array Modified parameters + */ + function parse_structure($p) + { +// $struct = $p['structure']; + + if ($p['mimetype'] == 'text/plain' || $p['mimetype'] == 'application/pgp') { + $this->parse_plain($p); + } + else if ($p['mimetype'] == 'multipart/signed') { + $this->parse_signed($p); + } + else if ($p['mimetype'] == 'multipart/encrypted') { + $this->parse_encrypted($p); + } + else if ($p['mimetype'] == 'application/pkcs7-mime') { + $this->parse_encrypted($p); + } + + return $p; + } + + /** + * Handler for preferences_sections_list hook. + * Adds Enigma settings sections into preferences sections list. + * + * @param array Original parameters + * + * @return array Modified parameters + */ + function preferences_section($p) + { + // add labels + $this->add_texts('localization/'); +/* + $p['list']['enigmasettings'] = array( + 'id' => 'enigmasettings', 'section' => $this->gettext('enigmasettings'), + ); +*/ + $p['list']['enigmacerts'] = array( + 'id' => 'enigmacerts', 'section' => $this->gettext('enigmacerts'), + ); + $p['list']['enigmakeys'] = array( + 'id' => 'enigmakeys', 'section' => $this->gettext('enigmakeys'), + ); + + return $p; + } + + /** + * Handler for preferences_list hook. + * Adds options blocks into Enigma settings sections in Preferences. + * + * @param array Original parameters + * + * @return array Modified parameters + */ + function preferences_list($p) + { +/* + if ($p['section'] == 'enigmasettings') { + // This makes that section is not removed from the list + $p['blocks']['dummy']['options']['dummy'] = array(); + } + else */ + if ($p['section'] == 'enigmacerts') { + // This makes that section is not removed from the list + $p['blocks']['dummy']['options']['dummy'] = array(); + } + else if ($p['section'] == 'enigmakeys') { + // This makes that section is not removed from the list + $p['blocks']['dummy']['options']['dummy'] = array(); + } + + return $p; + } + + /** + * Handler for preferences_save hook. + * Executed on Enigma settings form submit. + * + * @param array Original parameters + * + * @return array Modified parameters + */ + function preferences_save($p) + { + if ($p['section'] == 'enigmasettings') { + $a['prefs'] = array( +// 'dummy' => rcube_utils::get_input_value('_dummy', rcube_utils::INPUT_POST), + ); + } + + return $p; + } + + /** + * Handler for keys/certs management UI template. + */ + function preferences_ui() + { + $this->load_ui(); + $this->ui->init(); + } + + /** + * Handler for message_body_prefix hook. + * Called for every displayed (content) part of the message. + * Adds infobox about signature verification and/or decryption + * status above the body. + * + * @param array Original parameters + * + * @return array Modified parameters + */ + function status_message($p) + { + $part_id = $p['part']->mime_id; + + // skip: not a message part + if ($p['part'] instanceof rcube_message) + return $p; + + // skip: message has no signed/encoded content + if (!$this->engine) + return $p; + + // Decryption status + if (isset($this->engine->decryptions[$part_id])) { + + // get decryption status + $status = $this->engine->decryptions[$part_id]; + + // Load UI and add css script + $this->load_ui(); + $this->ui->add_css(); + + // display status info + $attrib['id'] = 'enigma-message'; + + if ($status instanceof enigma_error) { + $attrib['class'] = 'enigmaerror'; + $code = $status->getCode(); + if ($code == enigma_error::E_KEYNOTFOUND) + $msg = rcube::Q(str_replace('$keyid', enigma_key::format_id($status->getData('id')), + $this->gettext('decryptnokey'))); + else if ($code == enigma_error::E_BADPASS) + $msg = rcube::Q($this->gettext('decryptbadpass')); + else + $msg = rcube::Q($this->gettext('decrypterror')); + } + else { + $attrib['class'] = 'enigmanotice'; + $msg = rcube::Q($this->gettext('decryptok')); + } + + $p['prefix'] .= html::div($attrib, $msg); + } + + // Signature verification status + if (isset($this->engine->signed_parts[$part_id]) + && ($sig = $this->engine->signatures[$this->engine->signed_parts[$part_id]]) + ) { + // add css script + $this->load_ui(); + $this->ui->add_css(); + + // display status info + $attrib['id'] = 'enigma-message'; + + if ($sig instanceof enigma_signature) { + $sender = ($sig->name ? $sig->name . ' ' : '') . '<' . $sig->email . '>'; + + if ($sig->valid === enigma_error::E_UNVERIFIED) { + $attrib['class'] = 'enigmawarning'; + $msg = str_replace('$sender', $sender, $this->gettext('sigunverified')); + $msg = str_replace('$keyid', $sig->id, $msg); + $msg = rcube::Q($msg); + } + else if ($sig->valid) { + $attrib['class'] = 'enigmanotice'; + $msg = rcube::Q(str_replace('$sender', $sender, $this->gettext('sigvalid'))); + } + else { + $attrib['class'] = 'enigmawarning'; + $msg = rcube::Q(str_replace('$sender', $sender, $this->gettext('siginvalid'))); + } + } + else if ($sig && $sig->getCode() == enigma_error::E_KEYNOTFOUND) { + $attrib['class'] = 'enigmawarning'; + $msg = rcube::Q(str_replace('$keyid', enigma_key::format_id($sig->getData('id')), + $this->gettext('signokey'))); + } + else { + $attrib['class'] = 'enigmaerror'; + $msg = rcube::Q($this->gettext('sigerror')); + } +/* + $msg .= ' ' . html::a(array('href' => "#sigdetails", + 'onclick' => rcmail_output::JS_OBJECT_NAME.".command('enigma-sig-details')"), + rcube::Q($this->gettext('showdetails'))); +*/ + // test +// $msg .= '<br /><pre>'.$sig->body.'</pre>'; + + $p['prefix'] .= html::div($attrib, $msg); + + // Display each signature message only once + unset($this->engine->signatures[$this->engine->signed_parts[$part_id]]); + } + + return $p; + } + + /** + * Handler for plain/text message. + * + * @param array Reference to hook's parameters (see enigma::parse_structure()) + */ + private function parse_plain(&$p) + { + $this->load_engine(); + $this->engine->parse_plain($p); + } + + /** + * Handler for multipart/signed message. + * Verifies signature. + * + * @param array Reference to hook's parameters (see enigma::parse_structure()) + */ + private function parse_signed(&$p) + { + $this->load_engine(); + $this->engine->parse_signed($p); + } + + /** + * Handler for multipart/encrypted and application/pkcs7-mime message. + * + * @param array Reference to hook's parameters (see enigma::parse_structure()) + */ + private function parse_encrypted(&$p) + { + $this->load_engine(); + $this->engine->parse_encrypted($p); + } + + /** + * Handler for message_load hook. + * Check message bodies and attachments for keys/certs. + */ + function message_load($p) + { + $this->message = $p['object']; + + // handle attachments vcard attachments + foreach ((array)$this->message->attachments as $attachment) { + if ($this->is_keys_part($attachment)) { + $this->keys_parts[] = $attachment->mime_id; + } + } + // the same with message bodies + foreach ((array)$this->message->parts as $part) { + if ($this->is_keys_part($part)) { + $this->keys_parts[] = $part->mime_id; + $this->keys_bodies[] = $part->mime_id; + } + } + // @TODO: inline PGP keys + + if ($this->keys_parts) { + $this->add_texts('localization'); + } + } + + /** + * Handler for template_object_messagebody hook. + * This callback function adds a box below the message content + * if there is a key/cert attachment available + */ + function message_output($p) + { + $attach_script = false; + + foreach ($this->keys_parts as $part) { + + // remove part's body + if (in_array($part, $this->keys_bodies)) + $p['content'] = ''; + + $style = "margin:0 1em; padding:0.2em 0.5em; border:1px solid #999; width: auto" + ." border-radius:4px; -moz-border-radius:4px; -webkit-border-radius:4px"; + + // add box below message body + $p['content'] .= html::p(array('style' => $style), + html::a(array( + 'href' => "#", + 'onclick' => "return ".rcmail_output::JS_OBJECT_NAME.".enigma_import_attachment('".rcube::JQ($part)."')", + 'title' => $this->gettext('keyattimport')), + html::img(array('src' => $this->url('skins/classic/key_add.png'), 'style' => "vertical-align:middle"))) + . ' ' . html::span(null, $this->gettext('keyattfound'))); + + $attach_script = true; + } + + if ($attach_script) { + $this->include_script('enigma.js'); + } + + return $p; + } + + /** + * Handler for attached keys/certs import + */ + function import_file() + { + $this->load_engine(); + $this->engine->import_file(); + } + + /** + * Checks if specified message part is a PGP-key or S/MIME cert data + * + * @param rcube_message_part Part object + * + * @return boolean True if part is a key/cert + */ + private function is_keys_part($part) + { + // @TODO: S/MIME + return ( + // Content-Type: application/pgp-keys + $part->mimetype == 'application/pgp-keys' + ); + } +} |