/*
- * $Id$
- *
* XMPP (Jabber) service for the Citadel system
- * Copyright (c) 2007-2010 by Art Cancro
+ * Copyright (c) 2007-2011 by Art Cancro
*
- * This program is free software; you can redistribute it and/or modify
+ * This program is open source software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
+#include <stdarg.h>
#include <fcntl.h>
#include <signal.h>
#include <pwd.h>
#include <string.h>
#include <limits.h>
#include <ctype.h>
+#define SHOW_ME_VAPPEND_PRINTF
#include <libcitadel.h>
#include <expat.h>
#include "citadel.h"
#include "ctdl_module.h"
#include "serv_xmpp.h"
-struct xmpp_event *xmpp_queue = NULL;
+/* XML_StopParser is present in expat 2.x */
+#if XML_MAJOR_VERSION > 1
+#define HAVE_XML_STOPPARSER
+#endif
-/*
- * Given a source string and a target buffer, returns the string
- * properly escaped for insertion into an XML stream. Returns a
- * pointer to the target buffer for convenience.
- *
- * BUG: this does not properly handle UTF-8
- */
-char *xmlesc(char *buf, char *str, int bufsiz)
+HashList *XMPP_StartHandlers = NULL;
+HashList *XMPP_EndHandlers = NULL;
+HashList *XMPP_SupportedNamespaces = NULL;
+HashList *XMPP_NameSpaces = NULL;
+HashList *FlatToken = NULL;
+
+int XMPPSrvDebugEnable = 0;
+
+void XUnbuffer(void)
{
- char *ptr;
- unsigned char ch;
- int len = 0;
+ citxmpp *Xmpp = XMPP;
- if (!buf) return(NULL);
- buf[0] = 0;
- len = 0;
- if (!str) {
- return(buf);
- }
+ cputbuf(Xmpp->OutBuf);
+ FlushStrBuf(Xmpp->OutBuf);
+}
- for (ptr=str; *ptr; ptr++) {
- ch = *ptr;
- if (ch == '<') {
- strcpy(&buf[len], "<");
- len += 4;
- }
- else if (ch == '>') {
- strcpy(&buf[len], ">");
- len += 4;
- }
- else if (ch == '&') {
- strcpy(&buf[len], "&");
- len += 5;
- }
- else if (ch <= 0x7F) {
- buf[len++] = ch;
- buf[len] = 0;
+void XPutBody(const char *Str, long Len)
+{
+ StrBufXMLEscAppend(XMPP->OutBuf, NULL, Str, Len, 0);
+}
+
+void XPutProp(const char *Str, long Len)
+{
+ StrEscAppend(XMPP->OutBuf, NULL, Str, 0, 1);
+}
+
+void XPut(const char *Str, long Len)
+{
+ StrBufAppendBufPlain(XMPP->OutBuf, Str, Len, 0);
+}
+
+void XPrintf(const char *Format, ...)
+{
+ va_list arg_ptr;
+ va_start(arg_ptr, Format);
+ StrBufVAppendPrintf(XMPP->OutBuf, Format, arg_ptr);
+ va_end(arg_ptr);
+}
+
+
+void XPrint(const char *Token, long tlen,
+ int Flags,
+ ...)
+
+{
+ int BodySeen = 0;
+ int ArgType;
+ int Finished = 0;
+ char *PName;
+ long PLen;
+ char *Val;
+ long VLen;
+ va_list arg_ptr;
+
+ XPUT("<");
+ XPut(Token, tlen);
+
+ va_start(arg_ptr, Flags);
+ while (!Finished)
+ {
+ ArgType = va_arg(arg_ptr, int);
+ switch (ArgType)
+ {
+ case TYPE_STR:
+ PName = va_arg(arg_ptr, char*);
+ PLen = va_arg(arg_ptr, long);
+ Val = va_arg(arg_ptr, char*);
+ VLen = va_arg(arg_ptr, long);
+ XPUT(" ");
+ XPut(PName, PLen);
+ XPUT("=\"");
+ XPutProp(Val, VLen);
+ XPUT("\"");
+ break;
+ case TYPE_OPTSTR:
+ PName = va_arg(arg_ptr, char*);
+ PLen = va_arg(arg_ptr, long);
+ Val = va_arg(arg_ptr, char*);
+ VLen = va_arg(arg_ptr, long);
+ if (VLen > 0)
+ {
+ XPUT(" ");
+ XPut(PName, PLen);
+ XPUT("=\"");
+ XPutProp(Val, VLen);
+ XPUT("\"");
+ }
+ break;
+ case TYPE_INT:
+ PName = va_arg(arg_ptr, char*);
+ PLen = va_arg(arg_ptr, long);
+ VLen = va_arg(arg_ptr, long);
+ XPUT(" ");
+ XPut(PName, PLen);
+ XPUT("=\"");
+ XPrintf("%ld", VLen);
+ XPUT("\"");
+ break;
+ case TYPE_BODYSTR:
+ BodySeen = 1;
+ XPUT(">");
+ Val = va_arg(arg_ptr, char*);
+ VLen = va_arg(arg_ptr, long);
+ XPutBody(Val, VLen);
+ break;
+ case TYPE_ARGEND:
+ Finished = 1;
+ break;
}
- else if (ch > 0x7F) {
- char oct[10];
- sprintf(oct, "&#%o;", ch);
- strcpy(&buf[len], oct);
- len += strlen(oct);
+ }
+ if (Flags == XCLOSED)
+ {
+ if (BodySeen)
+ {
+ XPUT("</");
+ XPut(Token, tlen);
+ XPUT(">");
}
- if ((len + 6) > bufsiz) {
- return(buf);
+ else
+ {
+ XPUT("></");
+ XPut(Token, tlen);
+ XPUT(">");
}
}
- return(buf);
+ else
+ XPUT(">");
+ va_end(arg_ptr);
}
+#ifdef HAVE_XML_STOPPARSER
+/* Stop the parser if an entity declaration is hit. */
+static void xmpp_entity_declaration(void *userData, const XML_Char *entityName,
+ int is_parameter_entity, const XML_Char *value,
+ int value_length, const XML_Char *base,
+ const XML_Char *systemId, const XML_Char *publicId,
+ const XML_Char *notationName
+) {
+ XMPPM_syslog(LOG_WARNING, "Illegal entity declaration encountered; stopping parser.");
+ XML_StopParser(XMPP->xp, XML_FALSE);
+}
+#endif
/*
* We have just received a <stream> tag from the client, so send them ours
*/
void xmpp_stream_start(void *data, const char *supplied_el, const char **attr)
{
- char xmlbuf[256];
+ citxmpp *Xmpp = XMPP;
while (*attr) {
if (!strcasecmp(attr[0], "to")) {
- safestrncpy(XMPP->server_name, attr[1], sizeof XMPP->server_name);
+ safestrncpy(Xmpp->server_name, attr[1], sizeof Xmpp->server_name);
}
attr += 2;
}
- cprintf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
-
- cprintf("<stream:stream ");
- cprintf("from=\"%s\" ", xmlesc(xmlbuf, XMPP->server_name, sizeof xmlbuf));
- cprintf("id=\"%08x\" ", CC->cs_pid);
- cprintf("version=\"1.0\" ");
- cprintf("xmlns:stream=\"http://etherx.jabber.org/streams\" ");
- cprintf("xmlns=\"jabber:client\">");
+ XPUT("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
+ XPUT("<stream:stream ");
+ XPUT("from=\"");
+ XPutProp(Xmpp->server_name, strlen(Xmpp->server_name));
+ XPUT("\" id=\"");
+ XPrintf("%08x\" ", CC->cs_pid);
+ XPUT("version=\"1.0\" "
+ "xmlns:stream=\"http://etherx.jabber.org/streams\" "
+ "xmlns=\"jabber:client\">"
/* The features of this stream are... */
- cprintf("<stream:features>");
+ "<stream:features>");
-#ifdef HAVE_OPENSSL_XXXX_COMMENTED_OUT
- /* TLS encryption (but only if it isn't already active) */
+ /*
+ * TLS encryption (but only if it isn't already active)
+ */
+/*
+#ifdef HAVE_OPENSSL
if (!CC->redirect_ssl) {
- cprintf("<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'></starttls>");
+ XPUT("<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'></starttls>");
}
#endif
-
+*/
if (!CC->logged_in) {
/* If we're not logged in yet, offer SASL as our feature set */
xmpp_output_auth_mechs();
/* Also offer non-SASL authentication */
-
cprintf("<auth xmlns=\"http://jabber.org/features/iq-auth\"/>");
+
XPUT("<auth xmlns=\"http://jabber.org/features/iq-auth\"/>");
}
/* Offer binding and sessions as part of our feature set */
- cprintf("<bind xmlns=\"urn:ietf:params:xml:ns:xmpp-bind\"/>");
- cprintf("<session xmlns=\"urn:ietf:params:xml:ns:xmpp-session\"/>");
-
- cprintf("</stream:features>");
+ XPUT("<bind xmlns=\"urn:ietf:params:xml:ns:xmpp-bind\"/>"
+ "<session xmlns=\"urn:ietf:params:xml:ns:xmpp-session\"/>"
+ "</stream:features>");
CC->is_async = 1; /* XMPP sessions are inherently async-capable */
}
+void xmpp_start_query(void *data, const char *supplied_el, const char **attr)
+{
+ XMPP->iq_query_xmlns[0] = 0;
+ safestrncpy(XMPP->iq_query_xmlns, supplied_el, sizeof XMPP->iq_query_xmlns);
+}
-void xmpp_xml_start(void *data, const char *supplied_el, const char **attr) {
- char el[256];
- char *sep = NULL;
- int i;
+void xmpp_start_bind(void *data, const char *supplied_el, const char **attr)
+{
+ XMPP->bind_requested = 1;
+}
- /* Axe the namespace, we don't care about it */
- safestrncpy(el, supplied_el, sizeof el);
- while (sep = strchr(el, ':'), sep) {
- strcpy(el, ++sep);
- }
+void xmpp_start_auth(void *data, const char *supplied_el, const char **attr)
+{
+ int i;
- /*
- CtdlLogPrintf(CTDL_DEBUG, "XMPP ELEMENT START: <%s>\n", el);
+ XMPP->sasl_auth_mech[0] = 0;
for (i=0; attr[i] != NULL; i+=2) {
- CtdlLogPrintf(CTDL_DEBUG, " Attribute '%s' = '%s'\n", attr[i], attr[i+1]);
- }
- uncomment for more verbosity */
-
- if (!strcasecmp(el, "stream")) {
- xmpp_stream_start(data, supplied_el, attr);
+ if (!strcasecmp(attr[i], "mechanism")) {
+ safestrncpy(XMPP->sasl_auth_mech, attr[i+1], sizeof XMPP->sasl_auth_mech);
+ }
}
+}
+/*
+void xmpp_start_message(void *data, const char *supplied_el, const char **attr)
+{
+ int i;
- else if (!strcasecmp(el, "query")) {
- XMPP->iq_query_xmlns[0] = 0;
- safestrncpy(XMPP->iq_query_xmlns, supplied_el, sizeof XMPP->iq_query_xmlns);
+ for (i=0; attr[i] != NULL; i+=2) {
+ if (!strcasecmp(attr[i], "to")) {
+ safestrncpy(XMPP->message_to, attr[i+1], sizeof XMPP->message_to);
+ }
}
+}
+*/
+void xmpp_start_html(void *data, const char *supplied_el, const char **attr)
+{
+ ++XMPP->html_tag_level;
+}
- else if (!strcasecmp(el, "bind")) {
- XMPP->bind_requested = 1;
- }
+void xmpp_xml_start(void *data, const char *supplied_el, const char **attr)
+{
+ HashList *ThisNamespace = NULL;
+ const char *pToken;
+ const char *pch;
+ const char *NS = NULL;
+ long NSLen;
+ long len;
+ void *pv;
+
+ /* Axe the namespace, we don't care about it */
+ pToken = supplied_el;
+ pch = strchr(pToken, ':');
+ while (pch != NULL)
+ {
+ pToken = pch;
+ pch = strchr(pToken + 1, ':');
+ }
+
+ if (*pToken == ':')
+ {
+ NS = supplied_el;
+ NSLen = pToken - supplied_el;
+ if (GetHash(XMPP_NameSpaces, NS, NSLen, &pv))
+ {
+ ThisNamespace = pv;
- else if (!strcasecmp(el, "iq")) {
- for (i=0; attr[i] != NULL; i+=2) {
- if (!strcasecmp(attr[i], "type")) {
- safestrncpy(XMPP->iq_type, attr[i+1], sizeof XMPP->iq_type);
- }
- else if (!strcasecmp(attr[i], "id")) {
- safestrncpy(XMPP->iq_id, attr[i+1], sizeof XMPP->iq_id);
- }
- else if (!strcasecmp(attr[i], "from")) {
- safestrncpy(XMPP->iq_from, attr[i+1], sizeof XMPP->iq_from);
- }
- else if (!strcasecmp(attr[i], "to")) {
- safestrncpy(XMPP->iq_to, attr[i+1], sizeof XMPP->iq_to);
- }
}
- }
-
- else if (!strcasecmp(el, "auth")) {
- XMPP->sasl_auth_mech[0] = 0;
- for (i=0; attr[i] != NULL; i+=2) {
- if (!strcasecmp(attr[i], "mechanism")) {
- safestrncpy(XMPP->sasl_auth_mech, attr[i+1], sizeof XMPP->sasl_auth_mech);
+
+ pToken ++;
+ }
+
+ len = strlen(pToken);
+
+
+ if (ThisNamespace != NULL)
+ {
+ if (GetHash(ThisNamespace, pToken, len, &pv))
+ {
+ TokenHandler *th;
+ void *value;
+ long i = 0;
+
+ th = (TokenHandler*) pv;
+ value = th->GetToken();
+
+ while (attr[i] != NULL)
+ {
+
+ if (GetHash(th->Properties, attr[i], strlen(attr[i]), &pv))
+ {
+ PropertyHandler* ph = pv;
+ char *val;
+ StrBuf **pVal;
+ long len;
+
+ len = strlen(attr[i+1]);
+ val = value;
+ val += ph->offset;
+ pVal = (StrBuf**) val;
+ if (*pVal != NULL)
+ StrBufPlain(*pVal, attr[i+1], len);
+ else
+ *pVal = NewStrBufPlain(attr[i+1], len);
+ }
+ i+=2;
}
+ return;
}
- }
- else if (!strcasecmp(el, "message")) {
- for (i=0; attr[i] != NULL; i+=2) {
- if (!strcasecmp(attr[i], "to")) {
- safestrncpy(XMPP->message_to, attr[i+1], sizeof XMPP->message_to);
- }
- }
}
+ /*
+ XMPP_syslog(LOG_DEBUG, "XMPP ELEMENT START: <%s>\n", el);
+ for (i=0; attr[i] != NULL; i+=2) {
+ XMPP_syslog(LOG_DEBUG, " Attribute '%s' = '%s'\n", attr[i], attr[i+1]);
+ }
+ uncomment for more verbosity */
- else if (!strcasecmp(el, "html")) {
- ++XMPP->html_tag_level;
+ if (GetHash(XMPP_StartHandlers, pToken, len, &pv))
+ {
+ xmpp_handler *h;
+ h = (xmpp_handler*) pv;
+ h->Handler(data, supplied_el, attr);
}
}
-
-
-void xmpp_xml_end(void *data, const char *supplied_el) {
- char el[256];
- char *sep = NULL;
- char xmlbuf[256];
-
- /* Axe the namespace, we don't care about it */
- safestrncpy(el, supplied_el, sizeof el);
- while (sep = strchr(el, ':'), sep) {
- strcpy(el, ++sep);
+void xmpp_end_resource(void *data, const char *supplied_el, const char **attr)
+{
+ if (XMPP->chardata_len > 0) {
+ safestrncpy(XMPP->iq_client_resource, XMPP->chardata,
+ sizeof XMPP->iq_client_resource);
+ striplt(XMPP->iq_client_resource);
}
+}
- /*
- CtdlLogPrintf(CTDL_DEBUG, "XMPP ELEMENT END : <%s>\n", el);
+void xmpp_end_username(void *data, const char *supplied_el, const char **attr)
+{
+ /* NON SASL ONLY */
if (XMPP->chardata_len > 0) {
- CtdlLogPrintf(CTDL_DEBUG, " chardata: %s\n", XMPP->chardata);
+ safestrncpy(XMPP->iq_client_username, XMPP->chardata,
+ sizeof XMPP->iq_client_username);
+ striplt(XMPP->iq_client_username);
}
- uncomment for more verbosity */
+}
- if (!strcasecmp(el, "resource")) {
- if (XMPP->chardata_len > 0) {
- safestrncpy(XMPP->iq_client_resource, XMPP->chardata,
- sizeof XMPP->iq_client_resource);
- striplt(XMPP->iq_client_resource);
- }
+void xmpp_end_password(void *data, const char *supplied_el, const char **attr)
+{ /* NON SASL ONLY */
+ if (XMPP->chardata_len > 0) {
+ safestrncpy(XMPP->iq_client_password, XMPP->chardata,
+ sizeof XMPP->iq_client_password);
+ striplt(XMPP->iq_client_password);
}
+}
- else if (!strcasecmp(el, "username")) { /* NON SASL ONLY */
- if (XMPP->chardata_len > 0) {
- safestrncpy(XMPP->iq_client_username, XMPP->chardata,
- sizeof XMPP->iq_client_username);
- striplt(XMPP->iq_client_username);
- }
- }
+void xmpp_end_iq(void *data, const char *supplied_el, const char **attr)
+{
+ citxmpp *Xmpp = XMPP;
- else if (!strcasecmp(el, "password")) { /* NON SASL ONLY */
- if (XMPP->chardata_len > 0) {
- safestrncpy(XMPP->iq_client_password, XMPP->chardata,
- sizeof XMPP->iq_client_password);
- striplt(XMPP->iq_client_password);
+ /*
+ * iq type="get" (handle queries)
+ */
+ if (!strcasecmp(ChrPtr(Xmpp->IQ.type), "get"))
+ {
+ /*
+ * Query on a namespace
+ */
+ if (!IsEmptyStr(Xmpp->iq_query_xmlns)) {
+ xmpp_query_namespace(&Xmpp->IQ, Xmpp->iq_query_xmlns);
}
- }
-
- else if (!strcasecmp(el, "iq")) {
-
+
/*
- * iq type="get" (handle queries)
+ * ping ( http://xmpp.org/extensions/xep-0199.html )
*/
- if (!strcasecmp(XMPP->iq_type, "get")) {
-
- /*
- * Query on a namespace
- */
- if (!IsEmptyStr(XMPP->iq_query_xmlns)) {
- xmpp_query_namespace(XMPP->iq_id, XMPP->iq_from,
- XMPP->iq_to, XMPP->iq_query_xmlns);
+ else if (Xmpp->ping_requested) {
+ XPUT("<iq type=\"result\" ");
+ if (StrLength(Xmpp->IQ.from) > 0) {
+ XPUT("to=\"");
+ XPutSProp(Xmpp->IQ.from);
+ XPUT("\" ");
}
-
- /*
- * ping ( http://xmpp.org/extensions/xep-0199.html )
- */
- else if (XMPP->ping_requested) {
- cprintf("<iq type=\"result\" ");
- if (!IsEmptyStr(XMPP->iq_from)) {
- cprintf("to=\"%s\" ", xmlesc(xmlbuf, XMPP->iq_from, sizeof xmlbuf));
- }
- if (!IsEmptyStr(XMPP->iq_to)) {
- cprintf("from=\"%s\" ", xmlesc(xmlbuf, XMPP->iq_to, sizeof xmlbuf));
- }
- cprintf("id=\"%s\"/>", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
- }
-
- /*
- * Unknown query ... return the XML equivalent of a blank stare
- */
- else {
- CtdlLogPrintf(CTDL_DEBUG,
- "Unknown query <%s> - returning <service-unavailable/>\n",
- el
- );
- cprintf("<iq type=\"error\" id=\"%s\">", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
- cprintf("<error code=\"503\" type=\"cancel\">"
- "<service-unavailable xmlns=\"urn:ietf:params:xml:ns:xmpp-stanzas\"/>"
- "</error>"
- );
- cprintf("</iq>");
+ if (StrLength(Xmpp->IQ.to)>0) {
+ XPUT("from=\"");
+ XPutSProp(Xmpp->IQ.to);
+ XPUT("\" ");
}
+ XPUT("id=\"");
+ XPutSProp(Xmpp->IQ.id);
+ XPUT("\"/>");
}
/*
- * Non SASL authentication
+ * Unknown query ... return the XML equivalent of a blank stare
*/
- else if (
- (!strcasecmp(XMPP->iq_type, "set"))
- && (!strcasecmp(XMPP->iq_query_xmlns, "jabber:iq:auth:query"))
- ) {
-
- xmpp_non_sasl_authenticate(
- XMPP->iq_id,
- XMPP->iq_client_username,
- XMPP->iq_client_password,
- XMPP->iq_client_resource
- );
- }
-
- /*
- * If this <iq> stanza was a "bind" attempt, process it ...
- */
- else if (
- (XMPP->bind_requested)
- && (!IsEmptyStr(XMPP->iq_id))
- && (!IsEmptyStr(XMPP->iq_client_resource))
- && (CC->logged_in)
- ) {
-
- /* Generate the "full JID" of the client resource */
-
- snprintf(XMPP->client_jid, sizeof XMPP->client_jid,
- "%s/%s",
- CC->cs_inet_email,
- XMPP->iq_client_resource
- );
-
- /* Tell the client what its JID is */
-
- cprintf("<iq type=\"result\" id=\"%s\">", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
- cprintf("<bind xmlns=\"urn:ietf:params:xml:ns:xmpp-bind\">");
- cprintf("<jid>%s</jid>", xmlesc(xmlbuf, XMPP->client_jid, sizeof xmlbuf));
- cprintf("</bind>");
- cprintf("</iq>");
- }
-
- else if (XMPP->iq_session) {
- cprintf("<iq type=\"result\" id=\"%s\">", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
- cprintf("</iq>");
- }
-
else {
- cprintf("<iq type=\"error\" id=\"%s\">", xmlesc(xmlbuf, XMPP->iq_id, sizeof xmlbuf));
- cprintf("<error>Don't know howto do '%s'!</error>", xmlesc(xmlbuf, XMPP->iq_type, sizeof xmlbuf));
- cprintf("</iq>");
+/*
+ Xmpp_syslog(LOG_DEBUG,
+ "Unknown query <%s> - returning <service-unavailable/>\n",
+ el
+ );
+*/
+ XPUT("<iq type=\"error\" id=\"");
+ XPutSProp(Xmpp->IQ.id);
+ XPUT("\">"
+ "<error code=\"503\" type=\"cancel\">"
+ "<service-unavailable xmlns=\"urn:ietf:params:xml:ns:xmpp-stanzas\"/>"
+ "</error>"
+ "</iq>");
}
+ }
- /* Now clear these fields out so they don't get used by a future stanza */
- XMPP->iq_id[0] = 0;
- XMPP->iq_from[0] = 0;
- XMPP->iq_to[0] = 0;
- XMPP->iq_type[0] = 0;
- XMPP->iq_client_resource[0] = 0;
- XMPP->iq_session = 0;
- XMPP->iq_query_xmlns[0] = 0;
- XMPP->bind_requested = 0;
- XMPP->ping_requested = 0;
+ /*
+ * Non SASL authentication
+ */
+ else if (
+ (!strcasecmp(ChrPtr(Xmpp->IQ.type), "set"))
+ && (!strcasecmp(Xmpp->iq_query_xmlns, "jabber:iq:auth:query"))
+ ) {
+
+ xmpp_non_sasl_authenticate(
+ Xmpp->IQ.id,
+ Xmpp->iq_client_username,
+ Xmpp->iq_client_password,
+ Xmpp->iq_client_resource
+ );
}
- else if (!strcasecmp(el, "auth")) {
+ /*
+ * If this <iq> stanza was a "bind" attempt, process it ...
+ */
+ else if (
+ (Xmpp->bind_requested)
+ && (StrLength(Xmpp->IQ.id)>0)
+ && (!IsEmptyStr(Xmpp->iq_client_resource))
+ && (CC->logged_in)
+ ) {
+
+ /* Generate the "full JID" of the client resource */
+
+ snprintf(Xmpp->client_jid, sizeof Xmpp->client_jid,
+ "%s/%s",
+ CC->cs_inet_email,
+ Xmpp->iq_client_resource
+ );
- /* Try to authenticate (this function is responsible for the output stanza) */
- xmpp_sasl_auth(XMPP->sasl_auth_mech, (XMPP->chardata != NULL ? XMPP->chardata : "") );
+ /* Tell the client what its JID is */
- /* Now clear these fields out so they don't get used by a future stanza */
- XMPP->sasl_auth_mech[0] = 0;
+ XPUT("<iq type=\"result\" id=\"");
+ XPutSProp(Xmpp->IQ.id);
+ XPUT("\">"
+ "<bind xmlns=\"urn:ietf:params:xml:ns:xmpp-bind\">");
+ XPUT("<jid>");
+ XPutBody(Xmpp->client_jid, strlen(Xmpp->client_jid));
+ XPUT("</jid>"
+ "</bind>"
+ "</iq>");
}
- else if (!strcasecmp(el, "session")) {
- XMPP->iq_session = 1;
+ else if (Xmpp->iq_session) {
+ XPUT("<iq type=\"result\" id=\"");
+ XPutSProp(Xmpp->IQ.id);
+ XPUT("\">"
+ "</iq>");
}
- else if (!strcasecmp(el, "presence")) {
+ else {
+ XPUT("<iq type=\"error\" id=\"");
+ XPutSProp(Xmpp->IQ.id);
+ XPUT("\">");
+ XPUT("<error>Don't know howto do '");
+ XPutBody(SKEY(Xmpp->IQ.type));
+ XPUT("'!</error>"
+ "</iq>");
+ }
+
+ /* Now clear these fields out so they don't get used by a future stanza */
+ FlushStrBuf(Xmpp->IQ.id);
+ FlushStrBuf(Xmpp->IQ.from);
+ FlushStrBuf(Xmpp->IQ.to);
+ FlushStrBuf(Xmpp->IQ.type);
+ Xmpp->iq_client_resource[0] = 0;
+ Xmpp->iq_session = 0;
+ Xmpp->iq_query_xmlns[0] = 0;
+ Xmpp->bind_requested = 0;
+ Xmpp->ping_requested = 0;
+}
- /* Respond to a <presence> update by firing back with presence information
- * on the entire wholist. Check this assumption, it's probably wrong.
- */
- xmpp_wholist_presence_dump();
- }
- else if ( (!strcasecmp(el, "body")) && (XMPP->html_tag_level == 0) ) {
- if (XMPP->message_body != NULL) {
+void xmpp_end_auth(void *data, const char *supplied_el, const char **attr)
+{
+ /* Try to authenticate (this function is responsible for the output stanza) */
+ xmpp_sasl_auth(XMPP->sasl_auth_mech, (XMPP->chardata != NULL ? XMPP->chardata : "") );
+
+ /* Now clear these fields out so they don't get used by a future stanza */
+ XMPP->sasl_auth_mech[0] = 0;
+}
+
+void xmpp_end_session(void *data, const char *supplied_el, const char **attr)
+{
+ XMPP->iq_session = 1;
+}
+
+void xmpp_end_body(void *data, const char *supplied_el, const char **attr)
+{
+ if (XMPP->html_tag_level == 0)
+ {
+ if (XMPP->message_body != NULL)
+ {
free(XMPP->message_body);
XMPP->message_body = NULL;
}
XMPP->message_body = strdup(XMPP->chardata);
}
}
+}
- else if (!strcasecmp(el, "message")) {
- xmpp_send_message(XMPP->message_to, XMPP->message_body);
- XMPP->html_tag_level = 0;
- }
-
- else if (!strcasecmp(el, "html")) {
- --XMPP->html_tag_level;
- }
+void xmpp_end_html(void *data, const char *supplied_el, const char **attr)
+{
+ --XMPP->html_tag_level;
+}
- else if (!strcasecmp(el, "starttls")) {
+void xmpp_end_starttls(void *data, const char *supplied_el, const char **attr)
+{
#ifdef HAVE_OPENSSL
- cprintf("<proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
- CtdlModuleStartCryptoMsgs(NULL, NULL, NULL);
- if (!CC->redirect_ssl) CC->kill_me = 1;
+ XPUT("<proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
+ XUnbuffer();
+ CtdlModuleStartCryptoMsgs(NULL, NULL, NULL);
+ if (!CC->redirect_ssl) CC->kill_me = KILLME_NO_CRYPTO;
#else
- cprintf("<failure xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
- CC->kill_me = 1;
+ XPUT("<failure xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
+ CC->kill_me = KILLME_NO_CRYPTO;
#endif
- }
+}
- else if (!strcasecmp(el, "ping")) {
- XMPP->ping_requested = 1;
+void xmpp_end_ping(void *data, const char *supplied_el, const char **attr)
+{
+ XMPP->ping_requested = 1;
+}
+
+void xmpp_end_stream(void *data, const char *supplied_el, const char **attr)
+{
+ XMPPM_syslog(LOG_DEBUG, "XMPP client shut down their stream\n");
+ xmpp_massacre_roster();
+ XPUT("</stream>\n");
+ CC->kill_me = KILLME_CLIENT_LOGGED_OUT;
+}
+
+void xmpp_xml_end(void *data, const char *supplied_el)
+{
+ const char *pToken;
+ const char *pch;
+ long len;
+ void *pv;
+
+ /* Axe the namespace, we don't care about it */
+ pToken = supplied_el;
+ pch = strchr(pToken, ':');
+ while (pch != NULL)
+ {
+ pToken = pch;
+ pch = strchr(pToken + 1, ':');
}
- else if (!strcasecmp(el, "stream")) {
- CtdlLogPrintf(CTDL_DEBUG, "XMPP client shut down their stream\n");
- xmpp_massacre_roster();
- cprintf("</stream>\n");
- CC->kill_me = 1;
+ if (*pToken == ':')
+ pToken ++;
+
+ len = strlen(pToken);
+
+ /*
+ XMPP_syslog(LOG_DEBUG, "XMPP ELEMENT END : <%s>\n", el);
+ if (XMPP->chardata_len > 0) {
+ XMPP_syslog(LOG_DEBUG, " chardata: %s\n", XMPP->chardata);
}
+ uncomment for more verbosity */
- else {
- CtdlLogPrintf(CTDL_DEBUG, "Ignoring unknown tag <%s>\n", el);
+ if (GetHash(XMPP_EndHandlers, pToken, len, &pv))
+ {
+ xmpp_handler *h;
+ h = (xmpp_handler*) pv;
+ h->Handler(data, supplied_el, NULL);
+ }
+ else
+ {
+ XMPP_syslog(LOG_DEBUG, "Ignoring unknown tag <%s>\n", pToken);
}
XMPP->chardata_len = 0;
free(XMPP->message_body);
}
}
+ free_buf_iq(&XMPP->IQ);
+
XML_ParserFree(XMPP->xp);
+ FreeStrBuf(&XMPP->OutBuf);
free(XMPP);
}
* Here's where our XMPP session begins its happy day.
*/
void xmpp_greeting(void) {
+ client_set_inbound_buf(4);
strcpy(CC->cs_clientname, "XMPP session");
CC->session_specific_data = malloc(sizeof(citxmpp));
memset(XMPP, 0, sizeof(citxmpp));
XMPP->last_event_processed = queue_event_seq;
-
+ XMPP->OutBuf = NewStrBufPlain(NULL, SIZ);
/* XMPP does not use a greeting, but we still have to initialize some things. */
XMPP->xp = XML_ParserCreateNS("UTF-8", ':');
if (XMPP->xp == NULL) {
- CtdlLogPrintf(CTDL_ALERT, "Cannot create XML parser!\n");
- CC->kill_me = 1;
+ XMPPM_syslog(LOG_ALERT, "Cannot create XML parser!\n");
+ CC->kill_me = KILLME_XML_PARSER;
return;
}
XML_SetCharacterDataHandler(XMPP->xp, xmpp_xml_chardata);
// XML_SetUserData(XMPP->xp, something...);
+ /* Prevent the "billion laughs" attack against expat by disabling
+ * internal entity expansion. With 2.x, forcibly stop the parser
+ * if an entity is declared - this is safer and a more obvious
+ * failure mode. With older versions, simply prevent expansion
+ * of such entities. */
+#ifdef HAVE_XML_STOPPARSER
+ XML_SetEntityDeclHandler(XMPP->xp, xmpp_entity_declaration);
+#else
+ XML_SetDefaultHandler(XMPP->xp, NULL);
+#endif
+
CC->can_receive_im = 1; /* This protocol is capable of receiving instant messages */
+ XUnbuffer();
}
XML_Parse(XMPP->xp, ChrPtr(stream_input), rc, 0);
}
else {
- CtdlLogPrintf(CTDL_ERR, "Client disconnected: ending session.\n");
- CC->kill_me = 1;
+ XMPPM_syslog(LOG_ERR, "client disconnected: ending session.\n");
+ CC->kill_me = KILLME_CLIENT_DISCONNECTED;
}
FreeStrBuf(&stream_input);
+ XUnbuffer();
}
}
+void LogXMPPSrvDebugEnable(const int n)
+{
+ XMPPSrvDebugEnable = n;
+}
const char *CitadelServiceXMPP="XMPP";
+
+
+/******************************************************************************
+ * XMPP handler registering logic *
+ ******************************************************************************/
+
+void AddXMPPStartHandler(const char *key,
+ long len,
+ xmpp_handler_func Handler,
+ int Flags)
+{
+ xmpp_handler *h;
+ h = (xmpp_handler*) malloc(sizeof (xmpp_handler));
+ h->Flags = Flags;
+ h->Handler = Handler;
+ Put(XMPP_StartHandlers, key, len, h, NULL);
+}
+
+void AddXMPPEndHandler(const char *key,
+ long len,
+ xmpp_handler_func Handler,
+ int Flags)
+{
+ xmpp_handler *h;
+ h = (xmpp_handler*) malloc(sizeof (xmpp_handler));
+ h->Flags = Flags;
+ h->Handler = Handler;
+ Put(XMPP_EndHandlers, key, len, h, NULL);
+}
+
+void HFreePropertyHandler(void *FreeMe)
+{
+ free(FreeMe);
+}
+
+void HDeleteTokenHandler(void *FreeMe)
+{
+ TokenHandler *th = (TokenHandler *) FreeMe;
+ DeleteHash(&th->Properties);
+ free(th);
+}
+
+void XMPP_RegisterTokenProperty(const char *NS, long NSLen,
+ const char *Token, long TLen,
+ const char *Property, long PLen,
+ GetTokenDataFunc GetToken,
+ long offset)
+{
+ void *pv;
+ HashList *ThisNamespace = NULL;
+ PropertyHandler *h;
+ TokenHandler *th;
+
+ h = (PropertyHandler*) malloc(sizeof(PropertyHandler));
+ h->NameSpace = NS;
+ h->NameSpaceLen = NSLen;
+ h->Token = Token;
+ h->TokenLen = TLen;
+ h->Property = Property;
+ h->PropertyLen = PLen;
+ h->offset = offset;
+
+ if (!GetHash(XMPP_SupportedNamespaces, NS, NSLen, &pv))
+ {
+ Put(XMPP_SupportedNamespaces, NS, NSLen, NewStrBufPlain(NS, NSLen), HFreeStrBuf);
+ }
+
+
+ if (GetHash(XMPP_NameSpaces, NS, NSLen, &pv))
+ {
+ ThisNamespace = pv;
+ }
+ else
+ {
+ ThisNamespace = NewHash(1, NULL);
+ Put(XMPP_NameSpaces, NS, NSLen, ThisNamespace, HDeleteHash);
+ }
+
+ if (GetHash(ThisNamespace, Token, TLen, &pv))
+ {
+ th = pv;
+ }
+ else
+ {
+ th = (TokenHandler*) malloc (sizeof(TokenHandler));
+ th->GetToken = GetToken;
+ th->Properties = NewHash(1, NULL);
+ Put(ThisNamespace, Token, TLen, th, HDeleteTokenHandler);
+ }
+
+
+ if (PLen > 0)
+ Put(th->Properties, Property, PLen, h, HFreePropertyHandler);
+ /*
+ if (!GetHash(FlatToken, Token, TLen, &pv))
+ {
+ // todo mark pv as non uniq
+ Put(FlatToken, Token, TLen, ThisToken, reference_free_handler);
+ }
+ */
+}
+
+void xmpp_cleanup(void)
+{
+ DeleteHash(&XMPP_StartHandlers);
+ DeleteHash(&XMPP_EndHandlers);
+ DeleteHash(&XMPP_SupportedNamespaces);
+ DeleteHash(&XMPP_NameSpaces);
+ DeleteHash(&FlatToken);
+}
+
CTDL_MODULE_INIT(xmpp)
{
if (!threading) {
xmpp_greeting,
xmpp_command_loop,
xmpp_async_loop,
- CitadelServiceXMPP
- );
- CtdlRegisterSessionHook(xmpp_cleanup_function, EVT_STOP);
- CtdlRegisterSessionHook(xmpp_login_hook, EVT_LOGIN);
- CtdlRegisterSessionHook(xmpp_logout_hook, EVT_LOGOUT);
- CtdlRegisterSessionHook(xmpp_login_hook, EVT_UNSTEALTH);
- CtdlRegisterSessionHook(xmpp_logout_hook, EVT_STEALTH);
- }
-
- /* return our Subversion id for the Log */
- return "$Id$";
+ CitadelServiceXMPP);
+
+
+ XMPP_StartHandlers = NewHash(1, NULL);
+ XMPP_EndHandlers = NewHash(1, NULL);
+ XMPP_NameSpaces = NewHash(1, NULL);
+ XMPP_SupportedNamespaces = NewHash(1, NULL);
+ FlatToken = NewHash(1, NULL);
+
+ AddXMPPEndHandler(HKEY("resource"), xmpp_end_resource, 0);
+ AddXMPPEndHandler(HKEY("username"), xmpp_end_username, 0);
+ AddXMPPEndHandler(HKEY("password"), xmpp_end_password, 0);
+ AddXMPPEndHandler(HKEY("iq"), xmpp_end_iq, 0);
+ AddXMPPEndHandler(HKEY("auth"), xmpp_end_auth, 0);
+ AddXMPPEndHandler(HKEY("session"), xmpp_end_session, 0);
+ AddXMPPEndHandler(HKEY("body"), xmpp_end_body, 0);
+ AddXMPPEndHandler(HKEY("html"), xmpp_end_html, 0);
+ AddXMPPEndHandler(HKEY("starttls"), xmpp_end_starttls, 0);
+ AddXMPPEndHandler(HKEY("ping"), xmpp_end_ping, 0);
+ AddXMPPEndHandler(HKEY("stream"), xmpp_end_stream, 0);
+
+ AddXMPPStartHandler(HKEY("stream"), xmpp_stream_start, 0);
+ AddXMPPStartHandler(HKEY("query"), xmpp_start_query, 0);
+ AddXMPPStartHandler(HKEY("bind"), xmpp_start_bind, 0);
+ AddXMPPStartHandler(HKEY("auth"), xmpp_start_auth, 0);
+/// AddXMPPStartHandler(HKEY("message"), xmpp_start_message, 0);
+ AddXMPPStartHandler(HKEY("html"), xmpp_start_html, 0);
+
+
+ CtdlRegisterDebugFlagHook(HKEY("serv_xmpp"), LogXMPPSrvDebugEnable, &XMPPSrvDebugEnable);
+ CtdlRegisterSessionHook(xmpp_cleanup_function, EVT_STOP, PRIO_STOP + 70);
+ CtdlRegisterSessionHook(xmpp_login_hook, EVT_LOGIN, PRIO_LOGIN + 90);
+ CtdlRegisterSessionHook(xmpp_logout_hook, EVT_LOGOUT, PRIO_LOGOUT + 90);
+ CtdlRegisterSessionHook(xmpp_login_hook, EVT_UNSTEALTH, PRIO_UNSTEALTH + 1);
+ CtdlRegisterSessionHook(xmpp_logout_hook, EVT_STEALTH, PRIO_STEALTH + 1);
+ CtdlRegisterCleanupHook(xmpp_cleanup);
+ }
+
+ /* return our module name for the log */
+ return "xmpp";
}
+
+
projects / citadel.git / blobdiff