4 * Handle XMPP presence exchanges
6 * Copyright (c) 2007-2010 by Art Cancro
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 #include <sys/types.h>
34 #if TIME_WITH_SYS_TIME
35 # include <sys/time.h>
39 # include <sys/time.h>
50 #include <libcitadel.h>
53 #include "citserver.h"
56 #include "internet_addressing.h"
58 #include "ctdl_module.h"
59 #include "serv_xmpp.h"
64 * Indicate the presence of another user to the client
65 * (used in several places)
67 void xmpp_indicate_presence(char *presence_jid)
69 cprintf("<presence from=\"%s\" to=\"%s\"></presence>",
77 * Initial dump of the entire wholist
79 void xmpp_wholist_presence_dump(void)
81 struct CitContext *cptr = NULL;
84 int aide = (CC->user.axlevel >= AxAideU);
86 cptr = CtdlGetContextArray(&nContexts);
91 for (i=0; i<nContexts; i++) {
92 if (cptr[i].logged_in) {
94 (((cptr[i].cs_flags&CS_STEALTH)==0) || (aide)) /* aides see everyone */
95 && (cptr[i].user.usernum != CC->user.usernum) /* don't show myself */
96 && (cptr[i].can_receive_im) /* IM-capable session */
98 xmpp_indicate_presence(cptr[i].cs_inet_email);
107 * Function to remove a buddy subscription and delete from the roster
108 * (used in several places)
110 void xmpp_destroy_buddy(char *presence_jid) {
111 static int unsolicited_id = 1;
113 /* Transmit non-presence information */
114 cprintf("<presence type=\"unavailable\" from=\"%s\" to=\"%s\"></presence>",
115 presence_jid, XMPP->client_jid
117 cprintf("<presence type=\"unsubscribed\" from=\"%s\" to=\"%s\"></presence>",
118 presence_jid, XMPP->client_jid
120 // FIXME ... we should implement xmpp_indicate_nonpresence so we can use it elsewhere
122 /* Do an unsolicited roster update that deletes the contact. */
123 cprintf("<iq from=\"%s\" to=\"%s\" id=\"unbuddy_%x\" type=\"result\">",
128 cprintf("<query xmlns=\"jabber:iq:roster\">");
129 cprintf("<item jid=\"%s\" subscription=\"remove\">", presence_jid);
130 cprintf("<group>%s</group>", config.c_humannode);
139 * When a user logs in or out of the local Citadel system, notify all XMPP sessions about it.
141 void xmpp_presence_notify(char *presence_jid, int event_type) {
142 struct CitContext *cptr;
143 static int unsolicited_id;
144 int visible_sessions = 0;
146 int aide = (CC->user.axlevel >= AxAideU);
148 if (IsEmptyStr(presence_jid)) return;
149 if (CC->kill_me) return;
151 cptr = CtdlGetContextArray(&nContexts);
156 /* Count the visible sessions for this user */
157 for (i=0; i<nContexts; i++) {
158 if (cptr[i].logged_in) {
160 (!strcasecmp(cptr[i].cs_inet_email, presence_jid))
161 && (((cptr[i].cs_flags&CS_STEALTH)==0) || (aide))
162 && (cptr[i].can_receive_im)
169 CtdlLogPrintf(CTDL_DEBUG, "%d sessions for <%s> are now visible to session %d\n",
170 visible_sessions, presence_jid, CC->cs_pid);
172 if ( (event_type == XMPP_EVT_LOGIN) && (visible_sessions == 1) ) {
174 CtdlLogPrintf(CTDL_DEBUG, "Telling session %d that <%s> logged in\n", CC->cs_pid, presence_jid);
176 /* Do an unsolicited roster update that adds a new contact. */
177 for (i=0; i<nContexts; i++) {
178 if (cptr[i].logged_in) {
179 if (!strcasecmp(cptr[i].cs_inet_email, presence_jid)) {
180 cprintf("<iq id=\"unsolicited_%x\" type=\"result\">",
182 cprintf("<query xmlns=\"jabber:iq:roster\">");
183 xmpp_roster_item(&cptr[i]);
190 /* Transmit presence information */
191 xmpp_indicate_presence(presence_jid);
194 if (visible_sessions == 0) {
195 CtdlLogPrintf(CTDL_DEBUG, "Telling session %d that <%s> logged out\n", CC->cs_pid, presence_jid);
197 xmpp_destroy_buddy(presence_jid);
205 * Upon logout we make an attempt to delete the whole roster, in order to
206 * try to keep "ghost" buddies from remaining in the client-side roster.
208 void xmpp_massacre_roster(void)
210 struct CitContext *cptr;
212 int aide = (CC->user.axlevel >= AxAideU);
214 cptr = CtdlGetContextArray(&nContexts);
216 for (i=0; i<nContexts; i++) {
217 if (cptr[i].logged_in) {
219 (((cptr[i].cs_flags&CS_STEALTH)==0) || (aide))
220 && (cptr[i].user.usernum != CC->user.usernum)
222 xmpp_destroy_buddy(cptr[i].cs_inet_email);