5 * Description: Provides a Facebook-like chat using Jappix Mini
7 * Author: leberwurscht <leberwurscht@hoegners.de>
12 // Copyright 2012 "Leberwurscht" <leberwurscht@hoegners.de>
14 // This file is dual-licensed under the MIT license (see MIT.txt) and the AGPL license (see jappix/COPYING).
20 * jabber password should not be stored on server
21 * jabber password should not be sent between server and browser as soon as the user is logged in
22 * jabber password should not be reconstructible from communication between server and browser as soon as the user is logged in
25 Only store an encrypted version of the jabber password on the server. The encryption key is only available to the browser
26 and not to the server (at least as soon as the user is logged in). It can be stored using the jappix setDB function.
28 This encryption key could be the friendica password, but then this password would be stored in the browser in cleartext.
29 It is better to use a hash of the password.
30 The server should not be able to reconstruct the password, so we can't take the same hash the server stores. But we can
31 use hash("some_prefix"+password). This will however not work with OpenID logins, for this type of login the password must
35 How to discover the jabber addresses of the friendica contacts?
38 Each Friendica site with this addon provides a /jappixmini/ module page. We go through our contacts and retrieve
39 this information every week using a cron hook.
42 We do not want to make the jabber address public.
45 When two friendica users connect using DFRN, the relation gets a DFRN ID and a keypair is generated.
46 Using this keypair, we can provide the jabber address only to contacts:
49 signed_address = openssl_*_encrypt(alice_jabber_address)
50 send signed_address to Bob, who does
51 trusted_address = openssl_*_decrypt(signed_address)
53 encrypted_address = openssl_*_encrypt(bob_jabber_address)
54 reply with encrypted_address to Alice, who does
55 decrypted_address = openssl_*_decrypt(encrypted_address)
56 save decrypted_address
59 GET /jappixmini/?role=%s&signed_address=%s&dfrn_id=%s
62 json({"status":"ok", "encrypted_address":"%s"})
66 function jappixmini_install() {
67 register_hook('plugin_settings', 'addon/jappixmini/jappixmini.php', 'jappixmini_settings');
68 register_hook('plugin_settings_post', 'addon/jappixmini/jappixmini.php', 'jappixmini_settings_post');
70 register_hook('page_end', 'addon/jappixmini/jappixmini.php', 'jappixmini_script');
71 register_hook('authenticate', 'addon/jappixmini/jappixmini.php', 'jappixmini_login');
73 register_hook('cron', 'addon/jappixmini/jappixmini.php', 'jappixmini_cron');
75 // Jappix source download as required by AGPL
76 register_hook('about_hook', 'addon/jappixmini/jappixmini.php', 'jappixmini_download_source');
78 // set standard configuration
79 $info_text = get_config("jappixmini", "infotext");
80 if (!$info_text) set_config("jappixmini", "infotext",
81 "To get the chat working, you need to know a BOSH host which works with your Jabber account. ".
82 "An example of a BOSH server that works for all accounts is https://bind.jappix.com/, but keep ".
83 "in mind that the BOSH server can read along all chat messages. If you know that your Jabber ".
84 "server also provides an own BOSH server, it is much better to use this one!"
87 $bosh_proxy = get_config("jappixmini", "bosh_proxy");
88 if ($bosh_proxy==="") set_config("jappixmini", "bosh_proxy", "1");
90 // set addon version so that safe updates are possible later
91 $addon_version = get_config("jappixmini", "version");
92 if ($addon_version==="") set_config("jappixmini", "version", "1");
96 function jappixmini_uninstall() {
97 unregister_hook('plugin_settings', 'addon/jappixmini/jappixmini.php', 'jappixmini_settings');
98 unregister_hook('plugin_settings_post', 'addon/jappixmini/jappixmini.php', 'jappixmini_settings_post');
100 unregister_hook('page_end', 'addon/jappixmini/jappixmini.php', 'jappixmini_script');
101 unregister_hook('authenticate', 'addon/jappixmini/jappixmini.php', 'jappixmini_login');
103 unregister_hook('cron', 'addon/jappixmini/jappixmini.php', 'jappixmini_cron');
105 unregister_hook('about_hook', 'addon/jappixmini/jappixmini.php', 'jappixmini_download_source');
108 function jappixmini_plugin_admin(&$a, &$o) {
109 // display instructions and warnings on addon settings page for admin
111 if (!file_exists("addon/jappixmini.tgz")) {
112 $o .= '<p><strong style="color:#fff;background-color:#f00">The source archive jappixmini.tgz does not exist. This is probably a violation of the Jappix License (AGPL).</strong></p>';
115 // warn if cron job has not yet been executed
116 $cron_run = get_config("jappixmini", "last_cron_execution");
117 if (!$cron_run) $o .= "<p><strong>Warning: The cron job has not yet been executed. If this message is still there after some time (usually 10 minutes), this means that autosubscribe and autoaccept will not work.</strong></p>";
120 $bosh_proxy = intval(get_config("jappixmini", "bosh_proxy"));
121 $bosh_proxy = intval($bosh_proxy) ? ' checked="checked"' : '';
122 $o .= '<label for="jappixmini-proxy">Activate BOSH proxy</label>';
123 $o .= ' <input id="jappixmini-proxy" type="checkbox" name="jappixmini-proxy" value="1"'.$bosh_proxy.' /><br />';
126 $bosh_address = get_config("jappixmini", "bosh_address");
127 $o .= '<p><label for="jappixmini-address">Adress of the default BOSH proxy. If enabled it overrides the user settings:</label><br />';
128 $o .= '<input id="jappixmini-address" type="text" name="jappixmini-address" value="'.$bosh_address.'" /></p>';
130 // default server address
131 $default_server = get_config("jappixmini", "default_server");
132 $o .= '<p><label for="jappixmini-server">Adress of the default jabber server:</label><br />';
133 $o .= '<input id="jappixmini-server" type="text" name="jappixmini-server" value="'.$default_server.'" /></p>';
135 // default user name to friendica nickname
136 $default_user = intval(get_config("jappixmini", "default_user"));
137 $default_user = intval($default_user) ? ' checked="checked"' : '';
138 $o .= '<label for="jappixmini-user">Set the default username to the nickname:</label>';
139 $o .= ' <input id="jappixmini-user" type="checkbox" name="jappixmini-defaultuser" value="1"'.$default_user.' /><br />';
142 $info_text = get_config("jappixmini", "infotext");
143 $o .= '<p><label for="jappixmini-infotext">Info text to help users with configuration (important if you want to provide your own BOSH host!):</label><br />';
144 $o .= '<textarea id="jappixmini-infotext" name="jappixmini-infotext" rows="5" cols="50">'.htmlentities($info_text).'</textarea></p>';
147 $o .= '<input type="submit" name="jappixmini-admin-settings" value="OK" />';
150 function jappixmini_plugin_admin_post(&$a) {
152 $submit = $_REQUEST['jappixmini-admin-settings'];
154 $info_text = $_REQUEST['jappixmini-infotext'];
155 $bosh_proxy = intval($_REQUEST['jappixmini-proxy']);
156 $default_user = intval($_REQUEST['jappixmini-defaultuser']);
157 $bosh_address = $_REQUEST['jappixmini-address'];
158 $default_server = $_REQUEST['jappixmini-server'];
159 set_config("jappixmini", "infotext", $info_text);
160 set_config("jappixmini", "bosh_proxy", $bosh_proxy);
161 set_config("jappixmini", "bosh_address", $bosh_address);
162 set_config("jappixmini", "default_server", $default_server);
163 set_config("jappixmini", "default_user", $default_user);
167 function jappixmini_module() {}
168 function jappixmini_init(&$a) {
169 // module page where other Friendica sites can submit Jabber addresses to and also can query Jabber addresses
172 $dfrn_id = $_REQUEST["dfrn_id"];
173 if (!$dfrn_id) killme();
175 $role = $_REQUEST["role"];
177 $r = q("SELECT * FROM `contact` WHERE LENGTH(`pubkey`) AND `dfrn-id`='%s' LIMIT 1",
180 if (!count($r)) killme();
182 $encrypt_func = openssl_public_encrypt;
183 $decrypt_func = openssl_public_decrypt;
184 $key = $r[0]["pubkey"];
185 } else if ($role=="prv") {
186 $r = q("SELECT * FROM `contact` WHERE LENGTH(`prvkey`) AND `issued-id`='%s' LIMIT 1",
189 if (!count($r)) killme();
191 $encrypt_func = openssl_private_encrypt;
192 $decrypt_func = openssl_private_decrypt;
193 $key = $r[0]["prvkey"];
200 // save the Jabber address we received
202 $signed_address_hex = $_REQUEST["signed_address"];
203 $signed_address = hex2bin($signed_address_hex);
205 $trusted_address = "";
206 $decrypt_func($signed_address, $trusted_address, $key);
208 $now = intval(time());
209 set_pconfig($uid, "jappixmini", "id:$dfrn_id", "$now:$trusted_address");
210 } catch (Exception $e) {
213 // do not return an address if user deactivated plugin
214 $activated = get_pconfig($uid, 'jappixmini', 'activate');
215 if (!$activated) killme();
217 // return the requested Jabber address
219 $username = get_pconfig($uid, 'jappixmini', 'username');
220 $server = get_pconfig($uid, 'jappixmini', 'server');
221 $address = "$username@$server";
223 $encrypted_address = "";
224 $encrypt_func($address, $encrypted_address, $key);
226 $encrypted_address_hex = bin2hex($encrypted_address);
230 "encrypted_address"=>$encrypted_address_hex
233 $answer_json = json_encode($answer);
236 } catch (Exception $e) {
241 function jappixmini_settings(&$a, &$s) {
242 // addon settings for a user
244 $activate = get_pconfig(local_user(),'jappixmini','activate');
245 $activate = intval($activate) ? ' checked="checked"' : '';
246 $dontinsertchat = get_pconfig(local_user(),'jappixmini','dontinsertchat');
247 $insertchat = !(intval($dontinsertchat) ? ' checked="checked"' : '');
249 $defaultbosh = get_config("jappixmini", "bosh_address");
251 if ($defaultbosh != "")
252 set_pconfig(local_user(),'jappixmini','bosh', $defaultbosh);
254 $username = get_pconfig(local_user(),'jappixmini','username');
255 $username = htmlentities($username);
256 $server = get_pconfig(local_user(),'jappixmini','server');
257 $server = htmlentities($server);
258 $bosh = get_pconfig(local_user(),'jappixmini','bosh');
259 $bosh = htmlentities($bosh);
260 $password = get_pconfig(local_user(),'jappixmini','password');
261 $autosubscribe = get_pconfig(local_user(),'jappixmini','autosubscribe');
262 $autosubscribe = intval($autosubscribe) ? ' checked="checked"' : '';
263 $autoapprove = get_pconfig(local_user(),'jappixmini','autoapprove');
264 $autoapprove = intval($autoapprove) ? ' checked="checked"' : '';
265 $encrypt = intval(get_pconfig(local_user(),'jappixmini','encrypt'));
266 $encrypt_checked = $encrypt ? ' checked="checked"' : '';
267 $encrypt_disabled = $encrypt ? '' : ' disabled="disabled"';
270 $server = get_config("jappixmini", "default_server");
272 if (($username == "") and get_config("jappixmini", "default_user"))
273 $username = $a->user["nickname"];
275 $info_text = get_config("jappixmini", "infotext");
276 $info_text = htmlentities($info_text);
277 $info_text = str_replace("\n", "<br />", $info_text);
280 $r = q("SELECT COUNT(1) as `cnt` FROM `pconfig` WHERE `uid`=%d AND `cat`='jappixmini' AND `k` LIKE 'id:%%'", local_user());
281 if (count($r)) $contact_cnt = $r[0]["cnt"];
282 else $contact_cnt = 0;
284 // count jabber addresses
285 $r = q("SELECT COUNT(1) as `cnt` FROM `pconfig` WHERE `uid`=%d AND `cat`='jappixmini' AND `k` LIKE 'id:%%' AND `v` LIKE '%%@%%'", local_user());
286 if (count($r)) $address_cnt = $r[0]["cnt"];
287 else $address_cnt = 0;
290 // load scripts if not yet activated so that password can be saved
291 $a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/jappixmini/jappix/php/get.php?t=js&g=mini.xml"></script>'."\r\n";
292 $a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/jappixmini/jappix/php/get.php?t=js&f=presence.js~caps.js~name.js~roster.js"></script>'."\r\n";
294 $a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/jappixmini/lib.js"></script>'."\r\n";
297 $s .= '<div class="settings-block">';
299 $s .= '<h3>'.t('Jappix Mini addon settings').'</h3>';
301 $s .= '<label for="jappixmini-activate">'.t('Activate addon').'</label>';
302 $s .= ' <input id="jappixmini-activate" type="checkbox" name="jappixmini-activate" value="1"'.$activate.' />';
304 $s .= '<label for"jappixmini-dont-insertchat">'.t('Do <em>not</em> insert the Jappixmini Chat-Widget into the webinterface').'</label>';
305 $s .= '<input id="jappixmini-dont-insertchat" type="checkbox" name="jappixmini-dont-insertchat" value="1"'.$insertchat.' />';
307 $s .= '<label for="jappixmini-username">'.t('Jabber username').'</label>';
308 $s .= ' <input id="jappixmini-username" type="text" name="jappixmini-username" value="'.$username.'" />';
310 $s .= '<label for="jappixmini-server">'.t('Jabber server').'</label>';
311 $s .= ' <input id="jappixmini-server" type="text" name="jappixmini-server" value="'.$server.'" />';
314 if (defaultbosh == "") {
315 $s .= '<label for="jappixmini-bosh">'.t('Jabber BOSH host').'</label>';
316 $s .= ' <input id="jappixmini-bosh" type="text" name="jappixmini-bosh" value="'.$bosh.'" />';
321 $s .= '<label for="jappixmini-password">'.t('Jabber password').'</label>';
322 $s .= ' <input type="hidden" id="jappixmini-password" name="jappixmini-encrypted-password" value="'.$password.'" />';
323 $s .= ' <input id="jappixmini-clear-password" type="password" value="" onchange="jappixmini_set_password();" />';
325 $onchange = "document.getElementById('jappixmini-friendica-password').disabled = !this.checked;jappixmini_set_password();";
326 $s .= '<label for="jappixmini-encrypt">'.t('Encrypt Jabber password with Friendica password (recommended)').'</label>';
327 $s .= ' <input id="jappixmini-encrypt" type="checkbox" name="jappixmini-encrypt" onchange="'.$onchange.'" value="1"'.$encrypt_checked.' />';
329 $s .= '<label for="jappixmini-friendica-password">'.t('Friendica password').'</label>';
330 $s .= ' <input id="jappixmini-friendica-password" name="jappixmini-friendica-password" type="password" onchange="jappixmini_set_password();" value=""'.$encrypt_disabled.' />';
332 $s .= '<label for="jappixmini-autoapprove">'.t('Approve subscription requests from Friendica contacts automatically').'</label>';
333 $s .= ' <input id="jappixmini-autoapprove" type="checkbox" name="jappixmini-autoapprove" value="1"'.$autoapprove.' />';
335 $s .= '<label for="jappixmini-autosubscribe">'.t('Subscribe to Friendica contacts automatically').'</label>';
336 $s .= ' <input id="jappixmini-autosubscribe" type="checkbox" name="jappixmini-autosubscribe" value="1"'.$autosubscribe.' />';
338 $s .= '<label for="jappixmini-purge">'.t('Purge internal list of jabber addresses of contacts').'</label>';
339 $s .= ' <input id="jappixmini-purge" type="checkbox" name="jappixmini-purge" value="1" />';
341 if ($info_text) $s .= '<br />Configuration help:<p style="margin-left:2em;">'.$info_text.'</p>';
342 $s .= '<br />Status:<p style="margin-left:2em;">Addon knows '.$address_cnt.' Jabber addresses of '.$contact_cnt.' Friendica contacts (takes some time, usually 10 minutes, to update).</p>';
343 $s .= '<input type="submit" name="jappixmini-submit" value="' . t('Submit') . '" />';
344 $s .= ' <input type="button" value="'.t('Add contact').'" onclick="jappixmini_addon_subscribe();" />';
349 $a->page['htmlhead'] .= "<script type=\"text/javascript\">
350 function jappixmini_set_password() {
351 encrypt = document.getElementById('jappixmini-encrypt').checked;
352 password = document.getElementById('jappixmini-password');
353 clear_password = document.getElementById('jappixmini-clear-password');
355 friendica_password = document.getElementById('jappixmini-friendica-password');
357 if (friendica_password) {
358 jappixmini_addon_set_client_secret(friendica_password.value);
359 jappixmini_addon_encrypt_password(clear_password.value, function(encrypted_password){
360 password.value = encrypted_password;
365 password.value = clear_password.value;
369 jQuery(document).ready(function() {
370 encrypt = document.getElementById('jappixmini-encrypt').checked;
371 password = document.getElementById('jappixmini-password');
372 clear_password = document.getElementById('jappixmini-clear-password');
374 jappixmini_addon_decrypt_password(password.value, function(decrypted_password){
375 clear_password.value = decrypted_password;
379 clear_password.value = password.value;
385 function jappixmini_settings_post(&$a,&$b) {
386 // save addon settings for a user
388 if(! local_user()) return;
391 if($_POST['jappixmini-submit']) {
392 $encrypt = intval($b['jappixmini-encrypt']);
394 // check that Jabber password was encrypted with correct Friendica password
395 $friendica_password = trim($b['jappixmini-friendica-password']);
396 $encrypted = hash('whirlpool',$friendica_password);
397 $r = q("SELECT * FROM `user` WHERE `uid`=$uid AND `password`='%s'",
401 info("Wrong friendica password!");
406 $purge = intval($b['jappixmini-purge']);
408 $username = trim($b['jappixmini-username']);
409 $old_username = get_pconfig($uid,'jappixmini','username');
410 if ($username!=$old_username) $purge = 1;
412 $server = trim($b['jappixmini-server']);
413 $old_server = get_pconfig($uid,'jappixmini','server');
414 if ($server!=$old_server) $purge = 1;
416 set_pconfig($uid,'jappixmini','username',$username);
417 set_pconfig($uid,'jappixmini','server',$server);
418 set_pconfig($uid,'jappixmini','bosh',trim($b['jappixmini-bosh']));
419 set_pconfig($uid,'jappixmini','password',trim($b['jappixmini-encrypted-password']));
420 set_pconfig($uid,'jappixmini','autosubscribe',intval($b['jappixmini-autosubscribe']));
421 set_pconfig($uid,'jappixmini','autoapprove',intval($b['jappixmini-autoapprove']));
422 set_pconfig($uid,'jappixmini','activate',intval($b['jappixmini-activate']));
423 set_pconfig($uid,'jappixmini','dontinsertchat',intval($b['jappixmini-dont-insertchat']));
424 set_pconfig($uid,'jappixmini','encrypt',$encrypt);
425 info( 'Jappix Mini settings saved.' );
428 q("DELETE FROM `pconfig` WHERE `uid`=$uid AND `cat`='jappixmini' AND `k` LIKE 'id:%%'");
429 info( 'List of addresses purged.' );
434 function jappixmini_script(&$a,&$s) {
435 // adds the script to the page header which starts Jappix Mini
437 if(! local_user()) return;
439 $activate = get_pconfig(local_user(),'jappixmini','activate');
440 $dontinsertchat = get_pconfig(local_user(), 'jappixmini','dontinsertchat');
441 if (!$activate or $dontinsertchat) return;
443 $a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/jappixmini/jappix/php/get.php?t=js&g=mini.xml"></script>'."\r\n";
444 $a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/jappixmini/jappix/php/get.php?t=js&f=presence.js~caps.js~name.js~roster.js"></script>'."\r\n";
446 $a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/jappixmini/lib.js"></script>'."\r\n";
448 $username = get_pconfig(local_user(),'jappixmini','username');
449 $username = str_replace("'", "\\'", $username);
450 $server = get_pconfig(local_user(),'jappixmini','server');
451 $server = str_replace("'", "\\'", $server);
452 $bosh = get_pconfig(local_user(),'jappixmini','bosh');
453 $bosh = str_replace("'", "\\'", $bosh);
454 $encrypt = get_pconfig(local_user(),'jappixmini','encrypt');
455 $encrypt = intval($encrypt);
456 $password = get_pconfig(local_user(),'jappixmini','password');
457 $password = str_replace("'", "\\'", $password);
459 $autoapprove = get_pconfig(local_user(),'jappixmini','autoapprove');
460 $autoapprove = intval($autoapprove);
461 $autosubscribe = get_pconfig(local_user(),'jappixmini','autosubscribe');
462 $autosubscribe = intval($autosubscribe);
464 // set proxy if necessary
465 $use_proxy = get_config('jappixmini','bosh_proxy');
467 $proxy = $a->get_baseurl().'/addon/jappixmini/proxy.php';
473 // get a list of jabber accounts of the contacts
476 $rows = q("SELECT * FROM `pconfig` WHERE `uid`=$uid AND `cat`='jappixmini' AND `k` LIKE 'id:%%'");
477 foreach ($rows as $row) {
479 $pos = strpos($key, ":");
480 $dfrn_id = substr($key, $pos+1);
481 $r = q("SELECT `name` FROM `contact` WHERE `uid`=$uid AND (`dfrn-id`='%s' OR `issued-id`='%s')",
485 $name = $r[0]["name"];
488 $pos = strpos($value, ":");
489 $address = substr($value, $pos+1);
490 if (!$address) continue;
491 if (!$name) $name = $address;
493 $contacts[$address] = $name;
495 $contacts_json = json_encode($contacts);
496 $contacts_hash = sha1($contacts_json);
499 $r = q("SELECT `username` FROM `user` WHERE `uid`=$uid");
500 $nickname = json_encode($r[0]["username"]);
501 $groupchats = get_config('jappixmini','groupchats');
503 // add javascript to start Jappix Mini
504 $a->page['htmlhead'] .= "<script type=\"text/javascript\">
505 jQuery(document).ready(function() {
506 jappixmini_addon_start('$server', '$username', '$proxy', '$bosh', $encrypt, '$password', $nickname, $contacts_json, '$contacts_hash', $autoapprove, $autosubscribe, $groupchats);
513 function jappixmini_login(&$a, &$o) {
514 // create client secret on login to be able to encrypt jabber passwords
516 // for setDB and str_sha1, needed by jappixmini_addon_set_client_secret
517 $a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/jappixmini/jappix/php/get.php?t=js&f=datastore.js~jsjac.js"></script>'."\r\n";
519 // for jappixmini_addon_set_client_secret
520 $a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/jappixmini/lib.js"></script>'."\r\n";
522 // save hash of password
523 $o = str_replace("<form ", "<form onsubmit=\"jappixmini_addon_set_client_secret(this.elements['id_password'].value);return true;\" ", $o);
526 function jappixmini_cron(&$a, $d) {
527 // For autosubscribe/autoapprove, we need to maintain a list of jabber addresses of our contacts.
529 set_config("jappixmini", "last_cron_execution", $d);
531 // go through list of users with jabber enabled
532 $users = q("SELECT `uid` FROM `pconfig` WHERE `cat`='jappixmini' AND (`k`='autosubscribe' OR `k`='autoapprove') AND `v`='1'");
533 logger("jappixmini: Update list of contacts' jabber accounts for ".count($users)." users.");
538 foreach ($users as $row) {
541 // for each user, go through list of contacts
542 $contacts = q("SELECT * FROM `contact` WHERE `uid`=%d AND ((LENGTH(`dfrn-id`) AND LENGTH(`pubkey`)) OR (LENGTH(`issued-id`) AND LENGTH(`prvkey`)))", intval($uid));
543 foreach ($contacts as $contact_row) {
544 $request = $contact_row["request"];
545 if (!$request) continue;
547 $dfrn_id = $contact_row["dfrn-id"];
549 $key = $contact_row["pubkey"];
550 $encrypt_func = openssl_public_encrypt;
551 $decrypt_func = openssl_public_decrypt;
554 $dfrn_id = $contact_row["issued-id"];
555 $key = $contact_row["prvkey"];
556 $encrypt_func = openssl_private_encrypt;
557 $decrypt_func = openssl_private_decrypt;
561 // check if jabber address already present
562 $present = get_pconfig($uid, "jappixmini", "id:".$dfrn_id);
563 $now = intval(time());
565 // $present has format "timestamp:jabber_address"
566 $p = strpos($present, ":");
567 $timestamp = intval(substr($present, 0, $p));
569 // do not re-retrieve jabber address if last retrieval
570 // is not older than a week
571 if ($now-$timestamp<3600*24*7) continue;
574 // construct base retrieval address
575 $pos = strpos($request, "/dfrn_request/");
576 if ($pos===false) continue;
578 $base = substr($request, 0, $pos)."/jappixmini?role=$role";
580 // construct own address
581 $username = get_pconfig($uid, 'jappixmini', 'username');
582 if (!$username) continue;
583 $server = get_pconfig($uid, 'jappixmini', 'server');
584 if (!$server) continue;
586 $address = $username."@".$server;
589 $signed_address = "";
590 $encrypt_func($address, $signed_address, $key);
592 // construct request url
593 $signed_address_hex = bin2hex($signed_address);
594 $url = $base."&signed_address=$signed_address_hex&dfrn_id=".urlencode($dfrn_id);
598 $answer_json = fetch_url($url);
601 $answer = json_decode($answer_json);
602 if ($answer->status != "ok") throw new Exception();
604 $encrypted_address_hex = $answer->encrypted_address;
605 if (!$encrypted_address_hex) throw new Exception();
607 $encrypted_address = hex2bin($encrypted_address_hex);
608 if (!$encrypted_address) throw new Exception();
611 $decrypted_address = "";
612 $decrypt_func($encrypted_address, $decrypted_address, $key);
613 if (!$decrypted_address) throw new Exception();
614 } catch (Exception $e) {
615 $decrypted_address = "";
619 set_pconfig($uid, "jappixmini", "id:$dfrn_id", "$now:$decrypted_address");
624 function jappixmini_download_source(&$a,&$b) {
625 // Jappix Mini source download link on About page
627 $b .= '<h1>Jappix Mini</h1>';
628 $b .= '<p>This site uses the jappixmini addon, which includes Jappix Mini by the <a href="'.$a->get_baseurl().'/addon/jappixmini/jappix/AUTHORS">Jappix authors</a> and is distributed under the terms of the <a href="'.$a->get_baseurl().'/addon/jappixmini/jappix/COPYING">GNU Affero General Public License</a>.</p>';
629 $b .= '<p>You can download the <a href="'.$a->get_baseurl().'/addon/jappixmini.tgz">source code of the addon</a>. The rest of Friendica is distributed under compatible licenses and can be retrieved from <a href="https://github.com/friendica/friendica">https://github.com/friendica/friendica</a> and <a href="https://github.com/friendica/friendica-addons">https://github.com/friendica/friendica-addons</a></p>';