citadel
About: Citadel is an advanced messaging and collaboration system for groupware and BBS applications (preferred OS: Linux).
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serv_xmpp.c
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1/*
2 * XMPP (Jabber) service for the Citadel system
3 * Copyright (c) 2007-2021 by Art Cancro and citadel.org
4 *
5 * This program is open source software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#include "sysdep.h"
21#include <stdlib.h>
22#include <unistd.h>
23#include <stdio.h>
24#include <fcntl.h>
25#include <signal.h>
26#include <pwd.h>
27#include <errno.h>
28#include <sys/types.h>
29#include <time.h>
30#include <sys/wait.h>
31#include <string.h>
32#include <limits.h>
33#include <ctype.h>
34#include <libcitadel.h>
35#include <expat.h>
36#include "citadel.h"
37#include "server.h"
38#include "citserver.h"
39#include "support.h"
40#include "config.h"
41#include "user_ops.h"
42#include "database.h"
43#include "msgbase.h"
44#include "internet_addressing.h"
45#include "ctdl_module.h"
46#include "serv_xmpp.h"
47
48/* uncomment for more verbosity - it will log all received XML tags */
49// #define XMPP_XML_DEBUG
50
51/* XML_StopParser is present in expat 2.x */
52#if XML_MAJOR_VERSION > 1
53#define HAVE_XML_STOPPARSER
54#endif
55
56struct xmpp_event *xmpp_queue = NULL;
57
58#ifdef HAVE_XML_STOPPARSER
59/* Stop the parser if an entity declaration is hit. */
60static void xmpp_entity_declaration(void *userData, const XML_Char *entityName,
61 int is_parameter_entity, const XML_Char *value,
62 int value_length, const XML_Char *base,
63 const XML_Char *systemId, const XML_Char *publicId,
64 const XML_Char *notationName
65) {
66 syslog(LOG_WARNING, "xmpp: illegal entity declaration encountered; stopping parser.");
67 XML_StopParser(XMPP->xp, XML_FALSE);
68}
69#endif
70
71
72/*
73 * support function for xmlesc() which helps with UTF-8 strings
74 */
75static inline int Ctdl_GetUtf8SequenceLength(const char *CharS, const char *CharE)
76{
77 int n = 0;
78 unsigned char test = (1<<7);
79
80 if ((*CharS & 0xC0) != 0xC0) {
81 return 1;
82 }
83
84 while ((n < 8) && ((test & ((unsigned char)*CharS)) != 0)) {
85 test = test >> 1;
86 n ++;
87 }
88 if ((n > 6) || ((CharE - CharS) < n)) {
89 n = 0;
90 }
91 return n;
92}
93
94
95/*
96 * Given a source string and a target buffer, returns the string
97 * properly escaped for insertion into an XML stream. Returns a
98 * pointer to the target buffer for convenience.
99 */
100char *xmlesc(char *buf, char *str, int bufsiz)
101{
102 int IsUtf8Sequence;
103 char *ptr, *pche;
104 unsigned char ch;
105 int inlen;
106 int len = 0;
107
108 if (!buf) return(NULL);
109 buf[0] = 0;
110 len = 0;
111 if (!str) {
112 return(buf);
113 }
114 inlen = strlen(str);
115 pche = str + inlen;
116
117 for (ptr=str; *ptr; ptr++) {
118 ch = *ptr;
119 if (ch == '<') {
120 strcpy(&buf[len], "&lt;");
121 len += 4;
122 }
123 else if (ch == '>') {
124 strcpy(&buf[len], "&gt;");
125 len += 4;
126 }
127 else if (ch == '&') {
128 strcpy(&buf[len], "&amp;");
129 len += 5;
130 }
131 else if ((ch >= 0x20) && (ch <= 0x7F)) {
132 buf[len++] = ch;
133 buf[len] = 0;
134 }
135 else if (ch < 0x20) {
136 buf[len++] = '_'; // we probably shouldn't be doing this
137 buf[len] = 0;
138 }
139 else {
140 IsUtf8Sequence = Ctdl_GetUtf8SequenceLength(ptr, pche);
141 if (IsUtf8Sequence)
142 {
143 while ((IsUtf8Sequence > 0) &&
144 (ptr < pche))
145 {
146 buf[len] = *ptr;
147 ptr ++;
148 --IsUtf8Sequence;
149 }
150 }
151 else
152 {
153 char oct[10];
154 sprintf(oct, "&#%o;", ch);
155 strcpy(&buf[len], oct);
156 len += strlen(oct);
157 }
158 }
159 if ((len + 6) > bufsiz) {
160 return(buf);
161 }
162 }
163 return(buf);
164}
165
166
167/*
168 * We have just received a <stream> tag from the client, so send them ours
169 */
170void xmpp_stream_start(void *data, const char *supplied_el, const char **attr)
171{
172 char xmlbuf[256];
173
174 while (*attr) {
175 if (!strcasecmp(attr[0], "to")) {
176 safestrncpy(XMPP->server_name, attr[1], sizeof XMPP->server_name);
177 }
178 attr += 2;
179 }
180
181 cprintf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
182 cprintf("<stream:stream ");
183 cprintf("from=\"%s\" ", xmlesc(xmlbuf, XMPP->server_name, sizeof xmlbuf));
184 cprintf("id=\"%08x\" ", CC->cs_pid);
185 cprintf("version=\"1.0\" ");
186 cprintf("xmlns:stream=\"http://etherx.jabber.org/streams\" ");
187 cprintf("xmlns=\"jabber:client\">");
188
189 /* The features of this stream are... */
190 cprintf("<stream:features>");
191
192 /*
193 * TLS encryption (but only if it isn't already active)
194 */
195#ifdef HAVE_OPENSSL
196 if (!CC->redirect_ssl) {
197 cprintf("<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'></starttls>");
198 }
199#endif
200
201 if (!CC->logged_in) {
202 /* If we're not logged in yet, offer SASL as our feature set */
204
205 /* Also offer non-SASL authentication */
206 cprintf("<auth xmlns=\"http://jabber.org/features/iq-auth\"/>");
207 }
208
209 /* Offer binding and sessions as part of our feature set */
210 cprintf("<bind xmlns=\"urn:ietf:params:xml:ns:xmpp-bind\"/>");
211 cprintf("<session xmlns=\"urn:ietf:params:xml:ns:xmpp-session\"/>");
212 cprintf("</stream:features>");
213
214 CC->is_async = 1; /* XMPP sessions are inherently async-capable */
215}
216
217
218void xmpp_xml_start(void *data, const char *supplied_el, const char **attr) {
219 char el[256];
220 char *sep = NULL;
221 int i;
222
223 /* Create a version of the element with the namespace removed.
224 * Now we can access "el" or "supplied_el" depending on whether we want to see the whole namespace.
225 */
226 safestrncpy(el, supplied_el, sizeof el);
227 while (sep = strchr(el, ':'), sep) {
228 strcpy(el, ++sep);
229 }
230
231#ifdef XMPP_XML_DEBUG
232 syslog(LOG_DEBUG, "xmpp: ELEMENT START: <%s>", el);
233 for (i=0; attr[i] != NULL; i+=2) {
234 syslog(LOG_DEBUG, "xmpp: Attribute '%s' = '%s'", attr[i], attr[i+1]);
235 }
236#endif
237
238 if (!strcasecmp(el, "stream")) {
239 xmpp_stream_start(data, supplied_el, attr);
240 }
241
242 else if (!strcasecmp(el, "query")) {
243 XMPP->iq_query_xmlns[0] = 0;
244 safestrncpy(XMPP->iq_query_xmlns, supplied_el, sizeof XMPP->iq_query_xmlns);
245 }
246
247 else if (!strcasecmp(el, "bind")) {
248 XMPP->bind_requested = 1;
249 }
250
251 else if (!strcasecmp(el, "iq")) {
252 for (i=0; attr[i] != NULL; i+=2) {
253 if (!strcasecmp(attr[i], "type")) {
254 safestrncpy(XMPP->iq_type, attr[i+1], sizeof XMPP->iq_type);
255 }
256 else if (!strcasecmp(attr[i], "id")) {
257 safestrncpy(XMPP->iq_id, attr[i+1], sizeof XMPP->iq_id);
258 }
259 else if (!strcasecmp(attr[i], "from")) {
260 safestrncpy(XMPP->iq_from, attr[i+1], sizeof XMPP->iq_from);
261 }
262 else if (!strcasecmp(attr[i], "to")) {
263 safestrncpy(XMPP->iq_to, attr[i+1], sizeof XMPP->iq_to);
264 }
265 }
266 }
267
268 else if (!strcasecmp(el, "auth")) {
269 XMPP->sasl_auth_mech[0] = 0;
270 for (i=0; attr[i] != NULL; i+=2) {
271 if (!strcasecmp(attr[i], "mechanism")) {
272 safestrncpy(XMPP->sasl_auth_mech, attr[i+1], sizeof XMPP->sasl_auth_mech);
273 }
274 }
275 }
276
277 else if (!strcasecmp(el, "message")) {
278 for (i=0; attr[i] != NULL; i+=2) {
279 if (!strcasecmp(attr[i], "to")) {
280 safestrncpy(XMPP->message_to, attr[i+1], sizeof XMPP->message_to);
281 }
282 }
283 }
284
285 else if (!strcasecmp(el, "html")) {
286 ++XMPP->html_tag_level;
287 }
288}
289
290
291void xmpp_xml_end(void *data, const char *supplied_el) {
292 char el[256];
293 char *sep = NULL;
294 char xmlbuf[256];
295
296 /* Create a version of the element with the namespace removed.
297 * Now we can access "el" or "supplied_el" depending on whether we want to see the whole namespace.
298 */
299 safestrncpy(el, supplied_el, sizeof el);
300 while (sep = strchr(el, ':'), sep) {
301 strcpy(el, ++sep);
302 }
303
304#ifdef XMPP_XML_DEBUG
305 syslog(LOG_DEBUG, "xmpp: ELEMENT END : <%s>", el);
306 if (XMPP->chardata_len > 0) {
307 syslog(LOG_DEBUG, "xmpp: chardata: %s", XMPP->chardata);
308 }
309#endif
310
311 if (!strcasecmp(el, "resource")) {
312 if (XMPP->chardata_len > 0) {
313 safestrncpy(XMPP->iq_client_resource, XMPP->chardata, sizeof XMPP->iq_client_resource);
314 striplt(XMPP->iq_client_resource);
315 }
316 }
317
318 else if (!strcasecmp(el, "username")) { /* NON SASL ONLY */
319 if (XMPP->chardata_len > 0) {
320 safestrncpy(XMPP->iq_client_username, XMPP->chardata, sizeof XMPP->iq_client_username);
321 striplt(XMPP->iq_client_username);
322 }
323 }
324
325 else if (!strcasecmp(el, "password")) { /* NON SASL ONLY */
326 if (XMPP->chardata_len > 0) {
327 safestrncpy(XMPP->iq_client_password, XMPP->chardata, sizeof XMPP->iq_client_password);
328 striplt(XMPP->iq_client_password);
329 }
330 }
331
332 else if (!strcasecmp(el, "iq")) {
333
334 /*
335 * iq type="get" (handle queries)
336 */
337 if (!strcasecmp(XMPP->iq_type, "get")) {
338
339 /*
340 * Query on a namespace
341 */
342 if (!IsEmptyStr(XMPP->iq_query_xmlns)) {
343 xmpp_query_namespace(XMPP->iq_id, XMPP->iq_from, XMPP->iq_to, XMPP->iq_query_xmlns);
344 }
345
346 /*
347 * ping ( http://xmpp.org/extensions/xep-0199.html )
348 */
349 else if (XMPP->ping_requested) {
350 cprintf("<iq type=\"result\" ");
351 if (!IsEmptyStr(XMPP->iq_from)) {
352 cprintf("to=\"%s\" ", xmlesc(xmlbuf, XMPP->iq_from, sizeof xmlbuf));
353 }
354 if (!IsEmptyStr(XMPP->iq_to)) {
355 cprintf("from=\"%s\" ", xmlesc(xmlbuf, XMPP->iq_to, sizeof xmlbuf));
356 }
357 cprintf("id=\"%s\"/>", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
358 }
359
360 /*
361 * Client is requesting its own vCard
362 * (If we make this more elaborate, move it to a separate function)
363 */
364 else if (XMPP->iq_vcard) {
365 cprintf("<iq type=\"result\" id=\"%s\" ", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
366 cprintf("to=\"%s\">", xmlesc(xmlbuf, XMPP->iq_from, sizeof xmlbuf));
367 cprintf("<vCard xmlns=\"vcard-temp\">");
368 cprintf("<fn>%s</fn>", xmlesc(xmlbuf, CC->user.fullname, sizeof xmlbuf));
369 cprintf("<nickname>%s</nickname>", xmlesc(xmlbuf, CC->user.fullname, sizeof xmlbuf));
370 cprintf("</vCard>");
371 cprintf("</iq>");
372 }
373
374 /*
375 * Unknown query ... return the XML equivalent of a blank stare
376 */
377 else {
378 syslog(LOG_DEBUG, "xmpp: Unknown query <%s> - returning <service-unavailable/>", el);
379 cprintf("<iq type=\"error\" id=\"%s\">", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
380 cprintf("<error code=\"503\" type=\"cancel\">"
381 "<service-unavailable xmlns=\"urn:ietf:params:xml:ns:xmpp-stanzas\"/>"
382 "</error>"
383 );
384 cprintf("</iq>");
385 }
386 }
387
388 /*
389 * Non SASL authentication
390 */
391 else if (
392 (!strcasecmp(XMPP->iq_type, "set"))
393 && (!strcasecmp(XMPP->iq_query_xmlns, "jabber:iq:auth:query"))
394 ) {
395 xmpp_non_sasl_authenticate(XMPP->iq_id, XMPP->iq_client_username, XMPP->iq_client_password);
396 }
397
398 /*
399 * If this <iq> stanza was a "bind" attempt, process it ...
400 */
401 else if (
402 (XMPP->bind_requested)
403 && (!IsEmptyStr(XMPP->iq_id))
404 && (CC->logged_in)
405 ) {
406 /* If the client has not specified a client resource, generate one */
407 if (IsEmptyStr(XMPP->iq_client_resource)) {
408 snprintf(XMPP->iq_client_resource, sizeof XMPP->iq_client_resource, "%d", CC->cs_pid);
409 }
410
411 /* Generate the "full JID" of the client (user@host/resource) */
412 snprintf(XMPP->client_jid, sizeof XMPP->client_jid, "%s/%s", CC->cs_principal_id, XMPP->iq_client_resource);
413
414 /* Tell the client what its JID is */
415 cprintf("<iq type=\"result\" id=\"%s\">", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
416 cprintf("<bind xmlns=\"urn:ietf:params:xml:ns:xmpp-bind\">");
417 cprintf("<jid>%s</jid>", xmlesc(xmlbuf, XMPP->client_jid, sizeof xmlbuf));
418 cprintf("</bind>");
419 cprintf("</iq>");
420 }
421
422 else if (XMPP->iq_session) {
423 cprintf("<iq type=\"result\" id=\"%s\">", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
424 cprintf("</iq>");
425 }
426
427 else {
428 cprintf("<iq type=\"error\" id=\"%s\">", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
429 cprintf("<error>Don't know how to do '%s'!</error>", xmlesc(xmlbuf, XMPP->iq_type, sizeof xmlbuf));
430 cprintf("</iq>");
431 syslog(LOG_DEBUG, "XMPP: don't know how to do iq_type='%s' with iq_query_xmlns='%s'", XMPP->iq_type, XMPP->iq_query_xmlns);
432 }
433
434 /* Now clear these fields out so they don't get used by a future stanza */
435 XMPP->iq_id[0] = 0;
436 XMPP->iq_from[0] = 0;
437 XMPP->iq_to[0] = 0;
438 XMPP->iq_type[0] = 0;
439 XMPP->iq_client_resource[0] = 0;
440 XMPP->iq_session = 0;
441 XMPP->iq_vcard = 0;
442 XMPP->iq_query_xmlns[0] = 0;
443 XMPP->bind_requested = 0;
444 XMPP->ping_requested = 0;
445 }
446
447 else if (!strcasecmp(el, "auth")) {
448 /* Try to authenticate (this function is responsible for the output stanza) */
449 xmpp_sasl_auth(XMPP->sasl_auth_mech, (XMPP->chardata != NULL ? XMPP->chardata : "") );
450
451 /* Now clear these fields out so they don't get used by a future stanza */
452 XMPP->sasl_auth_mech[0] = 0;
453 }
454
455 else if (!strcasecmp(el, "session")) {
456 XMPP->iq_session = 1;
457 }
458
459 else if (!strcasecmp(supplied_el, "vcard-temp:vCard")) {
460 XMPP->iq_vcard = 1;
461 }
462
463 else if (!strcasecmp(el, "presence")) {
464 /* Respond to a <presence> update by firing back with presence information
465 * on the entire wholist. Check this assumption, it's probably wrong.
466 */
468 }
469
470 else if ( (!strcasecmp(el, "body")) && (XMPP->html_tag_level == 0) ) {
471 if (XMPP->message_body != NULL) {
472 free(XMPP->message_body);
473 XMPP->message_body = NULL;
474 }
475 if (XMPP->chardata_len > 0) {
476 XMPP->message_body = strdup(XMPP->chardata);
477 }
478 }
479
480 else if (!strcasecmp(el, "message")) {
481 xmpp_send_message(XMPP->message_to, XMPP->message_body);
482 XMPP->html_tag_level = 0;
483 }
484
485 else if (!strcasecmp(el, "html")) {
486 --XMPP->html_tag_level;
487 }
488
489 else if (!strcasecmp(el, "starttls")) {
490#ifdef HAVE_OPENSSL
491 cprintf("<proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
492 CtdlModuleStartCryptoMsgs(NULL, NULL, NULL);
493 if (!CC->redirect_ssl) CC->kill_me = KILLME_NO_CRYPTO;
494#else
495 cprintf("<failure xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
496 CC->kill_me = KILLME_NO_CRYPTO;
497#endif
498 }
499
500 else if (!strcasecmp(el, "ping")) {
501 XMPP->ping_requested = 1;
502 }
503
504 else if (!strcasecmp(el, "stream")) {
505 syslog(LOG_DEBUG, "xmpp: client shut down their stream");
507 cprintf("</stream>\n");
508 CC->kill_me = KILLME_CLIENT_LOGGED_OUT;
509 }
510
511 else if (!strcasecmp(el, "query")) {
512 /* already processed , no further action needed here */
513 }
514
515 else if (!strcasecmp(el, "bind")) {
516 /* already processed , no further action needed here */
517 }
518
519 else {
520 syslog(LOG_DEBUG, "xmpp: ignoring unknown tag <%s>", el);
521 }
522
523 XMPP->chardata_len = 0;
524 if (XMPP->chardata_alloc > 0) {
525 XMPP->chardata[0] = 0;
526 }
527}
528
529
530void xmpp_xml_chardata(void *data, const XML_Char *s, int len)
531{
532 citxmpp *X = XMPP;
533
534 if (X->chardata_alloc == 0) {
535 X->chardata_alloc = SIZ;
537 }
538 if ((X->chardata_len + len + 1) > X->chardata_alloc) {
539 X->chardata_alloc = X->chardata_len + len + 1024;
540 X->chardata = realloc(X->chardata, X->chardata_alloc);
541 }
542 memcpy(&X->chardata[X->chardata_len], s, len);
543 X->chardata_len += len;
544 X->chardata[X->chardata_len] = 0;
545}
546
547
548/*
549 * This cleanup function blows away the temporary memory and files used by the XMPP service.
550 */
552
553 /* Don't do this stuff if this is not a XMPP session! */
554 if (CC->h_command_function != xmpp_command_loop) return;
555
556 if (XMPP->chardata != NULL) {
557 free(XMPP->chardata);
558 XMPP->chardata = NULL;
559 XMPP->chardata_len = 0;
560 XMPP->chardata_alloc = 0;
561 if (XMPP->message_body != NULL) {
562 free(XMPP->message_body);
563 }
564 }
565 XML_ParserFree(XMPP->xp);
566 free(XMPP);
567}
568
569
570/*
571 * Here's where our XMPP session begins its happy day.
572 */
573void xmpp_greeting(void) {
575 strcpy(CC->cs_clientname, "XMPP session");
576 CC->session_specific_data = malloc(sizeof(citxmpp));
577 memset(XMPP, 0, sizeof(citxmpp));
578 XMPP->last_event_processed = queue_event_seq;
579
580 /* XMPP does not use a greeting, but we still have to initialize some things. */
581
582 XMPP->xp = XML_ParserCreateNS("UTF-8", ':');
583 if (XMPP->xp == NULL) {
584 syslog(LOG_ERR, "xmpp: cannot create XML parser");
585 CC->kill_me = KILLME_XML_PARSER;
586 return;
587 }
588
589 XML_SetElementHandler(XMPP->xp, xmpp_xml_start, xmpp_xml_end);
590 XML_SetCharacterDataHandler(XMPP->xp, xmpp_xml_chardata);
591 // XML_SetUserData(XMPP->xp, something...);
592
593 /* Prevent the "billion laughs" attack against expat by disabling
594 * internal entity expansion. With 2.x, forcibly stop the parser
595 * if an entity is declared - this is safer and a more obvious
596 * failure mode. With older versions, simply prevent expansion
597 * of such entities. */
598#ifdef HAVE_XML_STOPPARSER
599 XML_SetEntityDeclHandler(XMPP->xp, xmpp_entity_declaration);
600#else
601 XML_SetDefaultHandler(XMPP->xp, NULL);
602#endif
603
604 CC->can_receive_im = 1; /* This protocol is capable of receiving instant messages */
605}
606
607
608/*
609 * Main command loop for XMPP sessions.
610 */
612 int rc;
613 StrBuf *stream_input = NewStrBuf();
614
615 time(&CC->lastcmd);
616 rc = client_read_random_blob(stream_input, 30);
617 if (rc > 0) {
618 XML_Parse(XMPP->xp, ChrPtr(stream_input), rc, 0);
619 }
620 else {
621 syslog(LOG_ERR, "xmpp: client disconnected: ending session.");
623 }
624 FreeStrBuf(&stream_input);
625}
626
627
628/*
629 * Async loop for XMPP sessions (handles the transmission of unsolicited stanzas)
630 */
631void xmpp_async_loop(void) {
634}
635
636
637/*
638 * Login hook for XMPP sessions
639 */
640void xmpp_login_hook(void) {
641 xmpp_queue_event(XMPP_EVT_LOGIN, CC->cs_principal_id);
642}
643
644
645/*
646 * Logout hook for XMPP sessions
647 */
649 xmpp_queue_event(XMPP_EVT_LOGOUT, CC->cs_principal_id);
650}
651
652
653const char *CitadelServiceXMPP="XMPP";
655{
656 if (!threading) {
657 CtdlRegisterServiceHook(CtdlGetConfigInt("c_xmpp_c2s_port"),
658 NULL,
663 );
669
670 }
671
672 /* return our module name for the log */
673 return "xmpp";
674}
int CtdlGetConfigInt(char *key)
Definition: config.c:426
#define CC
Definition: context.h:140
void CtdlModuleStartCryptoMsgs(char *ok_response, char *nosup_response, char *error_response)
#define PRIO_LOGOUT
Definition: ctdl_module.h:81
void CtdlRegisterServiceHook(int tcp_port, char *sockpath, void(*h_greeting_function)(void), void(*h_command_function)(void), void(*h_async_function)(void), const char *ServiceName)
void CtdlRegisterSessionHook(void(*fcn_ptr)(void), int EventType, int Priority)
#define PRIO_UNSTEALTH
Definition: ctdl_module.h:93
#define PRIO_LOGIN
Definition: ctdl_module.h:83
#define PRIO_STEALTH
Definition: ctdl_module.h:95
#define PRIO_STOP
Definition: ctdl_module.h:87
#define CTDL_MODULE_INIT(module_name)
Definition: ctdl_module.h:50
void * malloc(size_t)
void free(void *)
void xmpp_cleanup_function(void)
Definition: serv_xmpp.c:551
void xmpp_async_loop(void)
Definition: serv_xmpp.c:631
struct xmpp_event * xmpp_queue
Definition: serv_xmpp.c:56
void xmpp_xml_end(void *data, const char *supplied_el)
Definition: serv_xmpp.c:291
void xmpp_command_loop(void)
Definition: serv_xmpp.c:611
void xmpp_xml_chardata(void *data, const XML_Char *s, int len)
Definition: serv_xmpp.c:530
void xmpp_xml_start(void *data, const char *supplied_el, const char **attr)
Definition: serv_xmpp.c:218
static int Ctdl_GetUtf8SequenceLength(const char *CharS, const char *CharE)
Definition: serv_xmpp.c:75
void xmpp_login_hook(void)
Definition: serv_xmpp.c:640
void xmpp_logout_hook(void)
Definition: serv_xmpp.c:648
void xmpp_greeting(void)
Definition: serv_xmpp.c:573
char * xmlesc(char *buf, char *str, int bufsiz)
Definition: serv_xmpp.c:100
void xmpp_stream_start(void *data, const char *supplied_el, const char **attr)
Definition: serv_xmpp.c:170
const char * CitadelServiceXMPP
Definition: serv_xmpp.c:653
void xmpp_output_incoming_messages(void)
Definition: xmpp_messages.c:46
void xmpp_output_auth_mechs(void)
void xmpp_process_events(void)
Definition: xmpp_queue.c:105
void xmpp_non_sasl_authenticate(char *, char *, char *)
@ XMPP_EVT_LOGOUT
Definition: serv_xmpp.h:59
@ XMPP_EVT_LOGIN
Definition: serv_xmpp.h:58
void xmpp_send_message(char *, char *)
Definition: xmpp_messages.c:77
int queue_event_seq
Definition: xmpp_queue.c:40
void xmpp_sasl_auth(char *, char *)
void xmpp_wholist_presence_dump(void)
Definition: xmpp_presence.c:85
#define XMPP
Definition: serv_xmpp.h:43
void xmpp_massacre_roster(void)
void xmpp_queue_event(int, char *)
Definition: xmpp_queue.c:42
void xmpp_query_namespace(char *, char *, char *, char *)
#define EVT_STOP
Definition: server.h:212
#define EVT_STEALTH
Definition: server.h:221
#define EVT_LOGOUT
Definition: server.h:216
#define EVT_LOGIN
Definition: server.h:214
@ KILLME_XML_PARSER
Definition: server.h:106
@ KILLME_CLIENT_DISCONNECTED
Definition: server.h:90
@ KILLME_CLIENT_LOGGED_OUT
Definition: server.h:88
@ KILLME_NO_CRYPTO
Definition: server.h:100
#define EVT_UNSTEALTH
Definition: server.h:222
int snprintf(char *buf, size_t max, const char *fmt,...)
Definition: snprintf.c:69
int chardata_alloc
Definition: serv_xmpp.h:18
char * chardata
Definition: serv_xmpp.h:16
int chardata_len
Definition: serv_xmpp.h:17
#define SIZ
Definition: sysconfig.h:33
void cprintf(const char *format,...)
Definition: sysdep.c:381
int client_read_random_blob(StrBuf *Target, int timeout)
Definition: sysdep.c:447
void client_set_inbound_buf(long N)
Definition: sysdep.c:440