diff options
Diffstat (limited to 'plugins/dkimstatus/dkimstatus.php')
| -rw-r--r-- | plugins/dkimstatus/dkimstatus.php | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/plugins/dkimstatus/dkimstatus.php b/plugins/dkimstatus/dkimstatus.php new file mode 100644 index 000000000..a26fac4af --- /dev/null +++ b/plugins/dkimstatus/dkimstatus.php @@ -0,0 +1,155 @@ +<?php + +/** + * This plugin displays an icon showing the status + * of dkim verification of the message + * + * @version 0.4.7 + * @author Julien vehent + * @mail julien@linuxwall.info + * + * original plugin from Vladimir Mach - wladik@gmail.com + * http://www.wladik.net + * + * Changelog: + * 20110912 - Added X-Spam-Status for spamassassin (thanks Ashish Shukla for the patch) + * 20110619 - Added License information for GPLv2 + * 20110406 - added italian translation from Roberto Puzzanghera + * 20110128 - updated german translation by Simon + * 20101118 - japanese translation from Taka + * 20100811 - from Sergio Cambra: SPF fix, image function and spanish translation + * 20100202 - fix for amavis and add cz translation + * 20100201 - add control of header.i and header.from to detect third party signature, change icons + * 20100115 - add 'no information' status with image using x-dkim-authentication-results + * 20090920 - fixed space in matching status (thanks Pim Pronk for suggestion) + */ +class dkimstatus extends rcube_plugin +{ + public $task = 'mail'; + function init() + { + $rcmail = rcmail::get_instance(); + if ($rcmail->action == 'show' || $rcmail->action == 'preview') { + $this->add_hook('imap_init', array($this, 'imap_init')); + $this->add_hook('message_headers_output', array($this, 'message_headers')); + } else if ($rcmail->action == '') { + // with enabled_caching we're fetching additional headers before show/preview + $this->add_hook('imap_init', array($this, 'imap_init')); + } + } + + function imap_init($p) + { + $rcmail = rcmail::get_instance(); + $p['fetch_headers'] = trim($p['fetch_headers'].' ' . strtoupper('Authentication-Results').' '. strtoupper('X-DKIM-Authentication-Results').' ' .strtoupper('X-Spam-Status')); + return $p; + } + + function image($image, $alt, $title) + { + return '<img src="plugins/dkimstatus/images/'.$image.'" alt="'.$this->gettext($alt).'" title="'.$this->gettext($alt).$title.'" /> '; + } + + function message_headers($p) + { + $this->add_texts('localization'); + + /* First, if dkimproxy did not find a signature, stop here + */ + if($p['headers']->others['x-dkim-authentication-results'] || $p['headers']->others['authentication-results'] || $p['headers']->others['x-spam-status']){ + + $results = $p['headers']->others['x-dkim-authentication-results']; + + if(preg_match("/none/", $results)) { + $image = 'nosiginfo.png'; + $alt = 'nosignature'; + } else { + /* Second, check the authentication-results header + */ + if($p['headers']->others['authentication-results']) { + + $results = $p['headers']->others['authentication-results']; + + if(preg_match("/dkim=([a-zA-Z0-9]*)/", $results, $m)) { + $status = ($m[1]); + } + + if(preg_match("/domainkeys=([a-zA-Z0-9]*)/", $results, $m)) { + $status = ($m[1]); + } + + + if($status == 'pass') { + + /* Verify if its an author's domain signature or a third party + */ + + if(preg_match("/[@][a-zA-Z0-9]+([.][a-zA-Z0-9]+)?\.[a-zA-Z]{2,4}/", $p['headers']->from, $m)) { + $authordomain = $m[0]; + if(preg_match("/header\.i=(([a-zA-Z0-9]+[_\.\-]?)+)?($authordomain)/", $results) || + preg_match("/header\.from=(([a-zA-Z0-9]+[_\.\-]?)+)?($authordomain)/", $results)) { + $image = 'authorsign.png'; + $alt = 'verifiedsender'; + $title = $results; + } else { + $image = 'thirdpty.png'; + $alt = 'thirdpartysig'; + $title = $results; + } + } + + } + /* If signature proves invalid, show appropriate warning + */ + else if ($status) { + $image = 'invalidsig.png'; + $alt = 'invalidsignature'; + $title = $results; + } + /* If no status it can be a spf verification + */ + else { + $image = 'nosiginfo.png'; + $alt = 'nosignature'; + } + + /* Third, check for spamassassin's X-Spam-Status + */ + } else if ($p['headers']->others['x-spam-status']) { + + $image = 'nosiginfo.png'; + $alt = 'nosignature'; + + /* DKIM_* are defined at: http://search.cpan.org/~kmcgrail/Mail-SpamAssassin-3.3.2/lib/Mail/SpamAssassin/Plugin/DKIM.pm */ + $results = $p['headers']->others['x-spam-status']; + if(preg_match_all('/DKIM_[^,]+/', $results, $m)) { + if(array_search('DKIM_SIGNED', $m[0]) !== FALSE) { + if(array_search('DKIM_VALID', $m[0]) !== FALSE) { + if(array_search('DKIM_VALID_AU', $m[0])) { + $image = 'authorsign.png'; + $alt = 'verifiedsender'; + $title = 'DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU'; + } else { + $image = 'thirdpty.png'; + $alt = 'thirdpartysig'; + $title = 'DKIM_SIGNED, DKIM_VALID'; + } + } else { + $image = 'invalidsig.png'; + $alt = 'invalidsignature'; + $title = 'DKIM_SIGNED'; + } + } + } + } + } + } else { + $image = 'nosiginfo.png'; + $alt = 'nosignature'; + } + if ($image && $alt) { + $p['output']['from']['value'] = $this->image($image, $alt, $title) . $p['output']['from']['value']; + } + return $p; + } +} |