0841fa712e
Basic splitting/validation code submitted via http://status.net/wiki/XMPP/JID_validation -- Copyright 2009 Patrick Georgi <patrick@georgi-clan.de> Licensed under ISC-L, which is compatible with everything else that keeps the copyright notice intact. Added PEAR Net_IDNA package to extlib to handle IDN normalization (also used by Validate's email verifier if present). * added test suite, supplemented my own test cases with JID validation and normalization test cases from libpurple * follows XMPP rules for validation of name part * fixes for normalization with non-ASCII names * will do domain checks if $config['email']['check_domain'] is on, checking for an XMPP-server SRV record or any lookup. (We don't actually need to ping those direct though.) * some more obscure stringprep validation rules aren't quite followed yet, but we err on the side of permissiveness. * we still don't actually let you save your address with a resource on it, as we strip resources when looking up users who've sent us presence or message updates. I would recommend saving the outgoing resource as a separate field if/when we add that..?
641 lines
20 KiB
PHP
641 lines
20 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* utility functions for Jabber/GTalk/XMPP messages
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Network
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2008 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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require_once 'XMPPHP/XMPP.php';
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/**
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* Splits a Jabber ID (JID) into node, domain, and resource portions.
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*
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* Based on validation routine submitted by:
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* @copyright 2009 Patrick Georgi <patrick@georgi-clan.de>
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* @license Licensed under ISC-L, which is compatible with everything else that keeps the copyright notice intact.
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*
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* @param string $jid string to check
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*
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* @return array with "node", "domain", and "resource" indices
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* @throws Exception if input is not valid
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*/
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function jabber_split_jid($jid)
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{
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$chars = '';
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/* the following definitions come from stringprep, Appendix C,
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which is used in its entirety by nodeprop, Chapter 5, "Prohibited Output" */
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/* C1.1 ASCII space characters */
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$chars .= "\x{20}";
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/* C1.2 Non-ASCII space characters */
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$chars .= "\x{a0}\x{1680}\x{2000}-\x{200b}\x{202f}\x{205f}\x{3000a}";
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/* C2.1 ASCII control characters */
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$chars .= "\x{00}-\x{1f}\x{7f}";
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/* C2.2 Non-ASCII control characters */
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$chars .= "\x{80}-\x{9f}\x{6dd}\x{70f}\x{180e}\x{200c}\x{200d}\x{2028}\x{2029}\x{2060}-\x{2063}\x{206a}-\x{206f}\x{feff}\x{fff9}-\x{fffc}\x{1d173}-\x{1d17a}";
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/* C3 - Private Use */
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$chars .= "\x{e000}-\x{f8ff}\x{f0000}-\x{ffffd}\x{100000}-\x{10fffd}";
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/* C4 - Non-character code points */
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$chars .= "\x{fdd0}-\x{fdef}\x{fffe}\x{ffff}\x{1fffe}\x{1ffff}\x{2fffe}\x{2ffff}\x{3fffe}\x{3ffff}\x{4fffe}\x{4ffff}\x{5fffe}\x{5ffff}\x{6fffe}\x{6ffff}\x{7fffe}\x{7ffff}\x{8fffe}\x{8ffff}\x{9fffe}\x{9ffff}\x{afffe}\x{affff}\x{bfffe}\x{bffff}\x{cfffe}\x{cffff}\x{dfffe}\x{dffff}\x{efffe}\x{effff}\x{ffffe}\x{fffff}\x{10fffe}\x{10ffff}";
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/* C5 - Surrogate codes */
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$chars .= "\x{d800}-\x{dfff}";
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/* C6 - Inappropriate for plain text */
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$chars .= "\x{fff9}-\x{fffd}";
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/* C7 - Inappropriate for canonical representation */
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$chars .= "\x{2ff0}-\x{2ffb}";
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/* C8 - Change display properties or are deprecated */
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$chars .= "\x{340}\x{341}\x{200e}\x{200f}\x{202a}-\x{202e}\x{206a}-\x{206f}";
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/* C9 - Tagging characters */
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$chars .= "\x{e0001}\x{e0020}-\x{e007f}";
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/* Nodeprep forbids some more characters */
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$nodeprepchars = $chars;
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$nodeprepchars .= "\x{22}\x{26}\x{27}\x{2f}\x{3a}\x{3c}\x{3e}\x{40}";
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$parts = explode("/", $jid, 2);
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if (count($parts) > 1) {
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$resource = $parts[1];
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if ($resource == '') {
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// Warning: empty resource isn't legit.
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// But if we're normalizing, we may as well take it...
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}
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} else {
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$resource = null;
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}
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$node = explode("@", $parts[0]);
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if ((count($node) > 2) || (count($node) == 0)) {
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throw new Exception("Invalid JID: too many @s");
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} else if (count($node) == 1) {
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$domain = $node[0];
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$node = null;
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} else {
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$domain = $node[1];
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$node = $node[0];
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if ($node == '') {
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throw new Exception("Invalid JID: @ but no node");
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}
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}
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// Length limits per http://xmpp.org/rfcs/rfc3920.html#addressing
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if ($node !== null) {
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if (strlen($node) > 1023) {
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throw new Exception("Invalid JID: node too long.");
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}
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if (preg_match("/[".$nodeprepchars."]/u", $node)) {
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throw new Exception("Invalid JID node '$node'");
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}
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}
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if (strlen($domain) > 1023) {
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throw new Exception("Invalid JID: domain too long.");
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}
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if (!common_valid_domain($domain)) {
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throw new Exception("Invalid JID domain name '$domain'");
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}
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if ($resource !== null) {
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if (strlen($resource) > 1023) {
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throw new Exception("Invalid JID: resource too long.");
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}
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if (preg_match("/[".$chars."]/u", $resource)) {
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throw new Exception("Invalid JID resource '$resource'");
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}
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}
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return array('node' => is_null($node) ? null : mb_strtolower($node),
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'domain' => is_null($domain) ? null : mb_strtolower($domain),
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'resource' => $resource);
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}
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/**
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* Checks whether a string is a syntactically valid Jabber ID (JID),
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* either with or without a resource.
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*
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* Note that a bare domain can be a valid JID.
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*
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* @param string $jid string to check
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* @param bool $check_domain whether we should validate that domain...
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*
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* @return boolean whether the string is a valid JID
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*/
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function jabber_valid_full_jid($jid, $check_domain=false)
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{
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try {
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$parts = jabber_split_jid($jid);
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if ($check_domain) {
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if (!jabber_check_domain($parts['domain'])) {
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return false;
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}
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}
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return $parts['resource'] !== ''; // missing or present; empty ain't kosher
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} catch (Exception $e) {
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return false;
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}
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}
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/**
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* Checks whether a string is a syntactically valid base Jabber ID (JID).
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* A base JID won't include a resource specifier on the end; since we
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* take it off when reading input we can't really use them reliably
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* to direct outgoing messages yet (sorry guys!)
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*
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* Note that a bare domain can be a valid JID.
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*
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* @param string $jid string to check
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* @param bool $check_domain whether we should validate that domain...
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*
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* @return boolean whether the string is a valid JID
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*/
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function jabber_valid_base_jid($jid, $check_domain=false)
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{
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try {
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$parts = jabber_split_jid($jid);
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if ($check_domain) {
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if (!jabber_check_domain($parts['domain'])) {
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return false;
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}
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}
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return ($parts['resource'] === null); // missing; empty ain't kosher
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} catch (Exception $e) {
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return false;
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}
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}
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/**
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* Normalizes a Jabber ID for comparison, dropping the resource component if any.
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*
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* @param string $jid JID to check
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* @param bool $check_domain if true, reject if the domain isn't findable
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*
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* @return string an equivalent JID in normalized (lowercase) form
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*/
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function jabber_normalize_jid($jid)
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{
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try {
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$parts = jabber_split_jid($jid);
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if ($parts['node'] !== null) {
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return $parts['node'] . '@' . $parts['domain'];
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} else {
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return $parts['domain'];
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}
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} catch (Exception $e) {
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return null;
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}
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}
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/**
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* Check if this domain's got some legit DNS record
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*/
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function jabber_check_domain($domain)
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{
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if (checkdnsrr("_xmpp-server._tcp." . $domain, "SRV")) {
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return true;
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}
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if (checkdnsrr($domain, "ANY")) {
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return true;
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}
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return false;
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}
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/**
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* the JID of the Jabber daemon for this StatusNet instance
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*
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* @return string JID of the Jabber daemon
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*/
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function jabber_daemon_address()
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{
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return common_config('xmpp', 'user') . '@' . common_config('xmpp', 'server');
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}
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class Sharing_XMPP extends XMPPHP_XMPP
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{
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function getSocket()
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{
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return $this->socket;
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}
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}
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/**
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* Build an XMPP proxy connection that'll save outgoing messages
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* to the 'xmppout' queue to be picked up by xmppdaemon later.
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*
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* If queueing is disabled, we'll grab a live connection.
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*
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* @return XMPPHP
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*/
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function jabber_proxy()
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{
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if (common_config('queue', 'enabled')) {
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$proxy = new Queued_XMPP(common_config('xmpp', 'host') ?
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common_config('xmpp', 'host') :
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common_config('xmpp', 'server'),
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common_config('xmpp', 'port'),
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common_config('xmpp', 'user'),
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common_config('xmpp', 'password'),
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common_config('xmpp', 'resource') . 'daemon',
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common_config('xmpp', 'server'),
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common_config('xmpp', 'debug') ?
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true : false,
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common_config('xmpp', 'debug') ?
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XMPPHP_Log::LEVEL_VERBOSE : null);
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return $proxy;
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} else {
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return jabber_connect();
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}
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}
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/**
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* Lazy-connect the configured Jabber account to the configured server;
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* if already opened, the same connection will be returned.
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*
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* In a multi-site background process, each site configuration
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* will get its own connection.
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*
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* @param string $resource Resource to connect (defaults to configured resource)
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*
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* @return XMPPHP connection to the configured server
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*/
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function jabber_connect($resource=null)
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{
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static $connections = array();
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$site = common_config('site', 'server');
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if (empty($connections[$site])) {
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if (empty($resource)) {
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$resource = common_config('xmpp', 'resource');
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}
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$conn = new Sharing_XMPP(common_config('xmpp', 'host') ?
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common_config('xmpp', 'host') :
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common_config('xmpp', 'server'),
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common_config('xmpp', 'port'),
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common_config('xmpp', 'user'),
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common_config('xmpp', 'password'),
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$resource,
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common_config('xmpp', 'server'),
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common_config('xmpp', 'debug') ?
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true : false,
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common_config('xmpp', 'debug') ?
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XMPPHP_Log::LEVEL_VERBOSE : null
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);
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if (!$conn) {
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return false;
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}
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$connections[$site] = $conn;
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$conn->autoSubscribe();
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$conn->useEncryption(common_config('xmpp', 'encryption'));
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try {
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common_log(LOG_INFO, __METHOD__ . ": connecting " .
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common_config('xmpp', 'user') . '/' . $resource);
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//$conn->connect(true); // true = persistent connection
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$conn->connect(); // persistent connections break multisite
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} catch (XMPPHP_Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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return false;
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}
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$conn->processUntil('session_start');
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}
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return $connections[$site];
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}
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/**
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* Queue send for a single notice to a given Jabber address
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*
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* @param string $to JID to send the notice to
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* @param Notice $notice notice to send
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*
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* @return boolean success value
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*/
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function jabber_send_notice($to, $notice)
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{
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$conn = jabber_proxy();
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$profile = Profile::staticGet($notice->profile_id);
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if (!$profile) {
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common_log(LOG_WARNING, 'Refusing to send notice with ' .
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'unknown profile ' . common_log_objstring($notice),
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__FILE__);
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return false;
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}
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$msg = jabber_format_notice($profile, $notice);
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$entry = jabber_format_entry($profile, $notice);
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$conn->message($to, $msg, 'chat', null, $entry);
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$profile->free();
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return true;
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}
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/**
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* extra information for XMPP messages, as defined by Twitter
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*
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* @param Profile $profile Profile of the sending user
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* @param Notice $notice Notice being sent
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*
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* @return string Extra information (Atom, HTML, addresses) in string format
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*/
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function jabber_format_entry($profile, $notice)
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{
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$entry = $notice->asAtomEntry(true, true);
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$xs = new XMLStringer();
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$xs->elementStart('html', array('xmlns' => 'http://jabber.org/protocol/xhtml-im'));
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$xs->elementStart('body', array('xmlns' => 'http://www.w3.org/1999/xhtml'));
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$xs->element('a', array('href' => $profile->profileurl),
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$profile->nickname);
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$xs->text(": ");
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if (!empty($notice->rendered)) {
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$xs->raw($notice->rendered);
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} else {
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$xs->raw(common_render_content($notice->content, $notice));
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}
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$xs->text(" ");
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$xs->element('a', array(
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'href'=>common_local_url('conversation',
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array('id' => $notice->conversation)).'#notice-'.$notice->id
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),sprintf(_('[%s]'),$notice->id));
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$xs->elementEnd('body');
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$xs->elementEnd('html');
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$html = $xs->getString();
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return $html . ' ' . $entry;
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}
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/**
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* sends a single text message to a given JID
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*
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* @param string $to JID to send the message to
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* @param string $body body of the message
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* @param string $type type of the message
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* @param string $subject subject of the message
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*
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* @return boolean success flag
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*/
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function jabber_send_message($to, $body, $type='chat', $subject=null)
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{
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$conn = jabber_proxy();
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$conn->message($to, $body, $type, $subject);
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return true;
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}
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/**
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* sends a presence stanza on the Jabber network
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*
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* @param string $status current status, free-form string
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* @param string $show structured status value
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* @param string $to recipient of presence, null for general
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* @param string $type type of status message, related to $show
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* @param int $priority priority of the presence
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*
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* @return boolean success value
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*/
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function jabber_send_presence($status, $show='available', $to=null,
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$type = 'available', $priority=null)
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{
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$conn = jabber_connect();
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if (!$conn) {
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return false;
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}
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$conn->presence($status, $show, $to, $type, $priority);
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return true;
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}
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/**
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* sends a confirmation request to a JID
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*
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* @param string $code confirmation code for confirmation URL
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* @param string $nickname nickname of confirming user
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* @param string $address JID to send confirmation to
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*
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* @return boolean success flag
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*/
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function jabber_confirm_address($code, $nickname, $address)
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{
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$body = 'User "' . $nickname . '" on ' . common_config('site', 'name') . ' ' .
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'has said that your Jabber ID belongs to them. ' .
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'If that\'s true, you can confirm by clicking on this URL: ' .
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common_local_url('confirmaddress', array('code' => $code)) .
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' . (If you cannot click it, copy-and-paste it into the ' .
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'address bar of your browser). If that user isn\'t you, ' .
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'or if you didn\'t request this confirmation, just ignore this message.';
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return jabber_send_message($address, $body);
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}
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/**
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* sends a "special" presence stanza on the Jabber network
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*
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* @param string $type Type of presence
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* @param string $to JID to send presence to
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* @param string $show show value for presence
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* @param string $status status value for presence
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*
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* @return boolean success flag
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*
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* @see jabber_send_presence()
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*/
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function jabber_special_presence($type, $to=null, $show=null, $status=null)
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{
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// FIXME: why use this instead of jabber_send_presence()?
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$conn = jabber_connect();
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$to = htmlspecialchars($to);
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$status = htmlspecialchars($status);
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$out = "<presence";
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if ($to) {
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$out .= " to='$to'";
|
|
}
|
|
if ($type) {
|
|
$out .= " type='$type'";
|
|
}
|
|
if ($show == 'available' and !$status) {
|
|
$out .= "/>";
|
|
} else {
|
|
$out .= ">";
|
|
if ($show && ($show != 'available')) {
|
|
$out .= "<show>$show</show>";
|
|
}
|
|
if ($status) {
|
|
$out .= "<status>$status</status>";
|
|
}
|
|
$out .= "</presence>";
|
|
}
|
|
$conn->send($out);
|
|
}
|
|
|
|
/**
|
|
* Queue broadcast of a notice to all subscribers and reply recipients
|
|
*
|
|
* This function will send a notice to all subscribers on the local server
|
|
* who have Jabber addresses, and have Jabber notification enabled, and
|
|
* have this subscription enabled for Jabber. It also sends the notice to
|
|
* all recipients of @-replies who have Jabber addresses and Jabber notification
|
|
* enabled. This is really the heart of Jabber distribution in StatusNet.
|
|
*
|
|
* @param Notice $notice The notice to broadcast
|
|
*
|
|
* @return boolean success flag
|
|
*/
|
|
|
|
function jabber_broadcast_notice($notice)
|
|
{
|
|
if (!common_config('xmpp', 'enabled')) {
|
|
return true;
|
|
}
|
|
$profile = Profile::staticGet($notice->profile_id);
|
|
|
|
if (!$profile) {
|
|
common_log(LOG_WARNING, 'Refusing to broadcast notice with ' .
|
|
'unknown profile ' . common_log_objstring($notice),
|
|
__FILE__);
|
|
return true; // not recoverable; discard.
|
|
}
|
|
|
|
$msg = jabber_format_notice($profile, $notice);
|
|
$entry = jabber_format_entry($profile, $notice);
|
|
|
|
$profile->free();
|
|
unset($profile);
|
|
|
|
$sent_to = array();
|
|
|
|
$conn = jabber_proxy();
|
|
|
|
$ni = $notice->whoGets();
|
|
|
|
foreach ($ni as $user_id => $reason) {
|
|
$user = User::staticGet($user_id);
|
|
if (empty($user) ||
|
|
empty($user->jabber) ||
|
|
!$user->jabbernotify) {
|
|
// either not a local user, or just not found
|
|
continue;
|
|
}
|
|
switch ($reason) {
|
|
case NOTICE_INBOX_SOURCE_REPLY:
|
|
if (!$user->jabberreplies) {
|
|
continue 2;
|
|
}
|
|
break;
|
|
case NOTICE_INBOX_SOURCE_SUB:
|
|
$sub = Subscription::pkeyGet(array('subscriber' => $user->id,
|
|
'subscribed' => $notice->profile_id));
|
|
if (empty($sub) || !$sub->jabber) {
|
|
continue 2;
|
|
}
|
|
break;
|
|
case NOTICE_INBOX_SOURCE_GROUP:
|
|
break;
|
|
default:
|
|
throw new Exception(sprintf(_("Unknown inbox source %d."), $reason));
|
|
}
|
|
|
|
common_log(LOG_INFO,
|
|
'Sending notice ' . $notice->id . ' to ' . $user->jabber,
|
|
__FILE__);
|
|
$conn->message($user->jabber, $msg, 'chat', null, $entry);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Queue send of a notice to all public listeners
|
|
*
|
|
* For notices that are generated on the local system (by users), we can optionally
|
|
* forward them to remote listeners by XMPP.
|
|
*
|
|
* @param Notice $notice notice to broadcast
|
|
*
|
|
* @return boolean success flag
|
|
*/
|
|
|
|
function jabber_public_notice($notice)
|
|
{
|
|
// Now, users who want everything
|
|
|
|
$public = common_config('xmpp', 'public');
|
|
|
|
// FIXME PRIV don't send out private messages here
|
|
// XXX: should we send out non-local messages if public,localonly
|
|
// = false? I think not
|
|
|
|
if ($public && $notice->is_local == Notice::LOCAL_PUBLIC) {
|
|
$profile = Profile::staticGet($notice->profile_id);
|
|
|
|
if (!$profile) {
|
|
common_log(LOG_WARNING, 'Refusing to broadcast notice with ' .
|
|
'unknown profile ' . common_log_objstring($notice),
|
|
__FILE__);
|
|
return true; // not recoverable; discard.
|
|
}
|
|
|
|
$msg = jabber_format_notice($profile, $notice);
|
|
$entry = jabber_format_entry($profile, $notice);
|
|
|
|
$conn = jabber_proxy();
|
|
|
|
foreach ($public as $address) {
|
|
common_log(LOG_INFO,
|
|
'Sending notice ' . $notice->id .
|
|
' to public listener ' . $address,
|
|
__FILE__);
|
|
$conn->message($address, $msg, 'chat', null, $entry);
|
|
}
|
|
$profile->free();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* makes a plain-text formatted version of a notice, suitable for Jabber distribution
|
|
*
|
|
* @param Profile &$profile profile of the sending user
|
|
* @param Notice &$notice notice being sent
|
|
*
|
|
* @return string plain-text version of the notice, with user nickname prefixed
|
|
*/
|
|
|
|
function jabber_format_notice(&$profile, &$notice)
|
|
{
|
|
return $profile->nickname . ': ' . $notice->content . ' [' . $notice->id . ']';
|
|
}
|