jabberd2
2.2.16
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00001 /* 00002 * jabberd - Jabber Open Source Server 00003 * Copyright (c) 2002 Jeremie Miller, Thomas Muldowney, 00004 * Ryan Eatmon, Robert Norris 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 2 of the License, or 00009 * (at your option) any later version. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this program; if not, write to the Free Software 00018 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA 00019 */ 00020 00021 /* 00022 * this is a minimal sx plugin that hacks the "jabber:server:dialback" 00023 * onto outgoing connections and adds "urn:xmpp:features:dialback" feature 00024 */ 00025 00026 #include "s2s.h" 00027 00028 #define S2S_DB_NS_DECL " xmlns:db='" uri_DIALBACK "'" 00029 #define S2S_DB_NS_DECL_LEN (uri_DIALBACK_L + 12) 00030 00031 static void _s2s_db_header(sx_t s, sx_plugin_t p, sx_buf_t buf) { 00032 00033 if(!(s->flags & S2S_DB_HEADER)) 00034 return; 00035 00036 log_debug(ZONE, "hacking dialback namespace decl onto stream header"); 00037 00038 /* get enough space */ 00039 _sx_buffer_alloc_margin(buf, 0, S2S_DB_NS_DECL_LEN + 2); 00040 00041 /* overwrite the trailing ">" with a decl followed by a new ">" */ 00042 memcpy(&buf->data[buf->len - 1], S2S_DB_NS_DECL ">", S2S_DB_NS_DECL_LEN+1); 00043 buf->len += S2S_DB_NS_DECL_LEN; 00044 } 00045 00047 static void _s2s_db_features(sx_t s, sx_plugin_t p, nad_t nad) { 00048 int ns; 00049 00050 ns = nad_add_namespace(nad, uri_URN_DIALBACK, NULL); 00051 nad_append_elem(nad, ns, "dialback", 1); 00052 nad_append_elem(nad, -1, "required", 2); 00053 } 00054 00055 int s2s_db_init(sx_env_t env, sx_plugin_t p, va_list args) { 00056 log_debug(ZONE, "initialising dialback sx plugin"); 00057 00058 p->header = _s2s_db_header; 00059 p->features = _s2s_db_features; 00060 00061 return 0; 00062 }