1 #include <opensrf/transport_session.h>
3 static char* get_xml_attr( const xmlChar** atts, const char* attr_name );
5 // ---------------------------------------------------------------------------------
6 // returns a built and allocated transport_session object.
7 // This codes does no network activity, only memory initilization
8 // ---------------------------------------------------------------------------------
9 transport_session* init_transport( const char* server,
10 int port, const char* unix_path, void* user_data, int component ) {
12 /* create the session struct */
13 transport_session* session =
14 (transport_session*) safe_malloc( sizeof(transport_session) );
16 session->user_data = user_data;
18 session->component = component;
20 /* initialize the data buffers */
21 session->body_buffer = buffer_init( JABBER_BODY_BUFSIZE );
22 session->subject_buffer = buffer_init( JABBER_SUBJECT_BUFSIZE );
23 session->thread_buffer = buffer_init( JABBER_THREAD_BUFSIZE );
24 session->from_buffer = buffer_init( JABBER_JID_BUFSIZE );
25 session->status_buffer = buffer_init( JABBER_STATUS_BUFSIZE );
26 session->recipient_buffer = buffer_init( JABBER_JID_BUFSIZE );
27 session->message_error_type = buffer_init( JABBER_JID_BUFSIZE );
28 session->session_id = buffer_init( 64 );
30 session->message_error_code = 0;
32 /* for OpenSRF extensions */
33 session->router_to_buffer = buffer_init( JABBER_JID_BUFSIZE );
34 session->router_from_buffer = buffer_init( JABBER_JID_BUFSIZE );
35 session->osrf_xid_buffer = buffer_init( JABBER_JID_BUFSIZE );
36 session->router_class_buffer = buffer_init( JABBER_JID_BUFSIZE );
37 session->router_command_buffer = buffer_init( JABBER_JID_BUFSIZE );
39 session->router_broadcast = 0;
41 if( session->body_buffer == NULL || session->subject_buffer == NULL ||
42 session->thread_buffer == NULL || session->from_buffer == NULL ||
43 session->status_buffer == NULL || session->recipient_buffer == NULL ||
44 session->router_to_buffer == NULL || session->router_from_buffer == NULL ||
45 session->router_class_buffer == NULL || session->router_command_buffer == NULL ||
46 session->session_id == NULL ) {
48 osrfLogError(OSRF_LOG_MARK, "init_transport(): buffer_init returned NULL" );
49 buffer_free( session->body_buffer );
50 buffer_free( session->subject_buffer );
51 buffer_free( session->thread_buffer );
52 buffer_free( session->from_buffer );
53 buffer_free( session->status_buffer );
54 buffer_free( session->recipient_buffer );
55 buffer_free( session->router_to_buffer );
56 buffer_free( session->router_from_buffer );
57 buffer_free( session->router_class_buffer );
58 buffer_free( session->router_command_buffer );
59 buffer_free( session->session_id );
65 /* initialize the jabber state machine */
66 session->state_machine = (jabber_machine*) safe_malloc( sizeof(jabber_machine) );
67 session->state_machine->connected = 0;
68 session->state_machine->connecting = 0;
69 session->state_machine->in_message = 0;
70 session->state_machine->in_message_body = 0;
71 session->state_machine->in_thread = 0;
72 session->state_machine->in_subject = 0;
73 session->state_machine->in_error = 0;
74 session->state_machine->in_message_error = 0;
75 session->state_machine->in_iq = 0;
76 session->state_machine->in_presence = 0;
77 session->state_machine->in_status = 0;
79 /* initialize the sax push parser */
80 session->parser_ctxt = xmlCreatePushParserCtxt(SAXHandler, session, "", 0, NULL);
82 /* initialize the transport_socket structure */
83 session->sock_mgr = (socket_manager*) safe_malloc( sizeof(socket_manager) );
85 session->sock_mgr->data_received = &grab_incoming;
86 session->sock_mgr->on_socket_closed = NULL;
87 session->sock_mgr->socket = NULL;
88 session->sock_mgr->blob = session;
91 session->server = strdup(server);
93 session->unix_path = strdup(unix_path);
94 else session->unix_path = NULL;
97 session->message_callback = NULL;
104 /* XXX FREE THE BUFFERS */
105 int session_free( transport_session* session ) {
106 if( ! session ) { return 0; }
108 if(session->sock_mgr)
109 socket_manager_free(session->sock_mgr);
111 if( session->state_machine ) free( session->state_machine );
112 if( session->parser_ctxt) {
113 xmlFreeDoc( session->parser_ctxt->myDoc );
114 xmlFreeParserCtxt(session->parser_ctxt);
117 xmlCleanupCharEncodingHandlers();
121 buffer_free(session->body_buffer);
122 buffer_free(session->subject_buffer);
123 buffer_free(session->thread_buffer);
124 buffer_free(session->from_buffer);
125 buffer_free(session->recipient_buffer);
126 buffer_free(session->status_buffer);
127 buffer_free(session->message_error_type);
128 buffer_free(session->router_to_buffer);
129 buffer_free(session->router_from_buffer);
130 buffer_free(session->osrf_xid_buffer);
131 buffer_free(session->router_class_buffer);
132 buffer_free(session->router_command_buffer);
133 buffer_free(session->session_id);
135 free(session->server);
136 free(session->unix_path);
143 int session_wait( transport_session* session, int timeout ) {
144 if( ! session || ! session->sock_mgr ) {
148 int ret = socket_wait( session->sock_mgr, timeout, session->sock_id );
151 osrfLogDebug(OSRF_LOG_MARK, "socket_wait returned error code %d", ret);
152 session->state_machine->connected = 0;
157 int session_send_msg(
158 transport_session* session, transport_message* msg ) {
160 if( ! session ) { return -1; }
162 if( ! session->state_machine->connected ) {
163 osrfLogWarning(OSRF_LOG_MARK, "State machine is not connected in send_msg()");
167 message_prepare_xml( msg );
168 //tcp_send( session->sock_obj, msg->msg_xml );
169 return socket_send( session->sock_id, msg->msg_xml );
174 /* connects to server and connects to jabber */
175 int session_connect( transport_session* session,
176 const char* username, const char* password,
177 const char* resource, int connect_timeout, enum TRANSPORT_AUTH_TYPE auth_type ) {
183 osrfLogWarning(OSRF_LOG_MARK, "session is null in connect" );
188 //char* server = session->sock_obj->server;
189 char* server = session->server;
191 if( ! session->sock_id ) {
193 if(session->port > 0) {
194 if( (session->sock_id = socket_open_tcp_client(
195 session->sock_mgr, session->port, session->server)) <= 0 )
198 } else if(session->unix_path != NULL) {
199 if( (session->sock_id = socket_open_unix_client(
200 session->sock_mgr, session->unix_path)) <= 0 )
204 osrfLogWarning( OSRF_LOG_MARK, "Can't open session: no port or unix path" );
209 if( session->component ) {
211 /* the first Jabber connect stanza */
212 char* our_hostname = getenv("HOSTNAME");
213 size1 = 150 + strlen( server );
214 char stanza1[ size1 ];
215 snprintf( stanza1, sizeof(stanza1),
216 "<stream:stream version='1.0' xmlns:stream='http://etherx.jabber.org/streams' "
217 "xmlns='jabber:component:accept' to='%s' from='%s' xml:lang='en'>",
218 username, our_hostname );
220 /* send the first stanze */
221 session->state_machine->connecting = CONNECTING_1;
223 // if( ! tcp_send( session->sock_obj, stanza1 ) ) {
224 if( socket_send( session->sock_id, stanza1 ) ) {
225 osrfLogWarning(OSRF_LOG_MARK, "error sending");
230 //tcp_wait( session->sock_obj, connect_timeout ); /* make the timeout smarter XXX */
231 socket_wait(session->sock_mgr, connect_timeout, session->sock_id);
233 /* server acknowledges our existence, now see if we can login */
234 if( session->state_machine->connecting == CONNECTING_2 ) {
236 int ss = session->session_id->n_used + strlen(password) + 5;
238 snprintf( hashstuff, sizeof(hashstuff), "%s%s", session->session_id->buf, password );
240 char* hash = shahash( hashstuff );
241 size2 = 100 + strlen( hash );
242 char stanza2[ size2 ];
243 snprintf( stanza2, sizeof(stanza2), "<handshake>%s</handshake>", hash );
245 //if( ! tcp_send( session->sock_obj, stanza2 ) ) {
246 if( socket_send( session->sock_id, stanza2 ) ) {
247 osrfLogWarning(OSRF_LOG_MARK, "error sending");
252 } else { /* we're not a component */
254 /* the first Jabber connect stanza */
255 size1 = 100 + strlen( server );
256 char stanza1[ size1 ];
257 snprintf( stanza1, sizeof(stanza1),
258 "<stream:stream to='%s' xmlns='jabber:client' "
259 "xmlns:stream='http://etherx.jabber.org/streams'>",
263 /* send the first stanze */
264 session->state_machine->connecting = CONNECTING_1;
265 //if( ! tcp_send( session->sock_obj, stanza1 ) ) {
266 if( socket_send( session->sock_id, stanza1 ) ) {
267 osrfLogWarning(OSRF_LOG_MARK, "error sending");
273 //tcp_wait( session->sock_obj, connect_timeout ); /* make the timeout smarter XXX */
274 socket_wait( session->sock_mgr, connect_timeout, session->sock_id ); /* make the timeout smarter XXX */
276 if( auth_type == AUTH_PLAIN ) {
278 /* the second jabber connect stanza including login info*/
279 size2 = 150 + strlen( username ) + strlen(password) + strlen(resource);
280 char stanza2[ size2 ];
281 snprintf( stanza2, sizeof(stanza2),
282 "<iq id='123456789' type='set'><query xmlns='jabber:iq:auth'>"
283 "<username>%s</username><password>%s</password><resource>%s</resource></query></iq>",
284 username, password, resource );
286 /* server acknowledges our existence, now see if we can login */
287 if( session->state_machine->connecting == CONNECTING_2 ) {
288 //if( ! tcp_send( session->sock_obj, stanza2 ) ) {
289 if( socket_send( session->sock_id, stanza2 ) ) {
290 osrfLogWarning(OSRF_LOG_MARK, "error sending");
295 } else if( auth_type == AUTH_DIGEST ) {
297 int ss = session->session_id->n_used + strlen(password) + 5;
299 snprintf( hashstuff, sizeof(hashstuff), "%s%s", session->session_id->buf, password );
301 char* hash = shahash( hashstuff );
303 /* the second jabber connect stanza including login info*/
304 size2 = 150 + strlen( hash ) + strlen(password) + strlen(resource);
305 char stanza2[ size2 ];
306 snprintf( stanza2, sizeof(stanza2),
307 "<iq id='123456789' type='set'><query xmlns='jabber:iq:auth'>"
308 "<username>%s</username><digest>%s</digest><resource>%s</resource></query></iq>",
309 username, hash, resource );
311 /* server acknowledges our existence, now see if we can login */
312 if( session->state_machine->connecting == CONNECTING_2 ) {
313 //if( ! tcp_send( session->sock_obj, stanza2 ) ) {
314 if( socket_send( session->sock_id, stanza2 ) ) {
315 osrfLogWarning(OSRF_LOG_MARK, "error sending");
326 //tcp_wait( session->sock_obj, connect_timeout );
327 socket_wait( session->sock_mgr, connect_timeout, session->sock_id );
329 if( session->state_machine->connected ) {
337 // ---------------------------------------------------------------------------------
338 // TCP data callback. Shove the data into the push parser.
339 // ---------------------------------------------------------------------------------
340 //void grab_incoming( void * session, char* data ) {
341 void grab_incoming(void* blob, socket_manager* mgr, int sockid, char* data, int parent) {
342 transport_session* ses = (transport_session*) blob;
343 if( ! ses ) { return; }
344 xmlParseChunk(ses->parser_ctxt, data, strlen(data), 0);
348 void startElementHandler(
349 void *session, const xmlChar *name, const xmlChar **atts) {
351 transport_session* ses = (transport_session*) session;
352 if( ! ses ) { return; }
355 if( strcmp( (char*) name, "message" ) == 0 ) {
356 ses->state_machine->in_message = 1;
357 buffer_add( ses->from_buffer, get_xml_attr( atts, "from" ) );
358 buffer_add( ses->recipient_buffer, get_xml_attr( atts, "to" ) );
359 buffer_add( ses->router_from_buffer, get_xml_attr( atts, "router_from" ) );
360 buffer_add( ses->osrf_xid_buffer, get_xml_attr( atts, "osrf_xid" ) );
361 buffer_add( ses->router_to_buffer, get_xml_attr( atts, "router_to" ) );
362 buffer_add( ses->router_class_buffer, get_xml_attr( atts, "router_class" ) );
363 buffer_add( ses->router_command_buffer, get_xml_attr( atts, "router_command" ) );
364 char* broadcast = get_xml_attr( atts, "broadcast" );
366 ses->router_broadcast = atoi( broadcast );
371 if( ses->state_machine->in_message ) {
373 if( strcmp( (char*) name, "body" ) == 0 ) {
374 ses->state_machine->in_message_body = 1;
378 if( strcmp( (char*) name, "subject" ) == 0 ) {
379 ses->state_machine->in_subject = 1;
383 if( strcmp( (char*) name, "thread" ) == 0 ) {
384 ses->state_machine->in_thread = 1;
390 if( strcmp( (char*) name, "presence" ) == 0 ) {
391 ses->state_machine->in_presence = 1;
392 buffer_add( ses->from_buffer, get_xml_attr( atts, "from" ) );
393 buffer_add( ses->recipient_buffer, get_xml_attr( atts, "to" ) );
397 if( strcmp( (char*) name, "status" ) == 0 ) {
398 ses->state_machine->in_status = 1;
403 if( strcmp( (char*) name, "stream:error" ) == 0 ) {
404 ses->state_machine->in_error = 1;
405 ses->state_machine->connected = 0;
406 osrfLogWarning( OSRF_LOG_MARK, "Received <stream:error> message from Jabber server" );
411 /* first server response from a connect attempt */
412 if( strcmp( (char*) name, "stream:stream" ) == 0 ) {
413 if( ses->state_machine->connecting == CONNECTING_1 ) {
414 ses->state_machine->connecting = CONNECTING_2;
415 buffer_add( ses->session_id, get_xml_attr(atts, "id") );
419 if( strcmp( (char*) name, "handshake" ) == 0 ) {
420 ses->state_machine->connected = 1;
421 ses->state_machine->connecting = 0;
426 if( strcmp( (char*) name, "error" ) == 0 ) {
427 ses->state_machine->in_message_error = 1;
428 buffer_add( ses->message_error_type, get_xml_attr( atts, "type" ) );
429 ses->message_error_code = atoi( get_xml_attr( atts, "code" ) );
430 osrfLogInfo( OSRF_LOG_MARK, "Received <error> message with type %s and code %s",
431 get_xml_attr( atts, "type"), get_xml_attr( atts, "code") );
435 if( strcmp( (char*) name, "iq" ) == 0 ) {
436 ses->state_machine->in_iq = 1;
438 if( strcmp( get_xml_attr(atts, "type"), "result") == 0
439 && ses->state_machine->connecting == CONNECTING_2 ) {
440 ses->state_machine->connected = 1;
441 ses->state_machine->connecting = 0;
445 if( strcmp( get_xml_attr(atts, "type"), "error") == 0 ) {
446 osrfLogWarning( OSRF_LOG_MARK, "Error connecting to jabber" );
452 // ------------------------------------------------------------------
453 // Returns the value of the given XML attribute
454 // The xmlChar** construct is commonly returned from SAX event
455 // handlers. Pass that in with the name of the attribute you want
457 // ------------------------------------------------------------------
458 static char* get_xml_attr( const xmlChar** atts, const char* attr_name ) {
461 for(i = 0;(atts[i] != NULL);i++) {
462 if( strcmp( (char*) atts[i++], attr_name ) == 0 ) {
463 if( atts[i] != NULL ) {
464 return (char*) atts[i];
473 // ------------------------------------------------------------------
474 // See which tags are ending
475 // ------------------------------------------------------------------
476 void endElementHandler( void *session, const xmlChar *name) {
477 transport_session* ses = (transport_session*) session;
478 if( ! ses ) { return; }
480 if( strcmp( (char*) name, "message" ) == 0 ) {
483 /* pass off the message info the callback */
484 if( ses->message_callback ) {
486 /* here it's ok to pass in the raw buffers because
487 message_init allocates new space for the chars
489 transport_message* msg = message_init(
490 ses->body_buffer->buf,
491 ses->subject_buffer->buf,
492 ses->thread_buffer->buf,
493 ses->recipient_buffer->buf,
494 ses->from_buffer->buf );
496 message_set_router_info( msg,
497 ses->router_from_buffer->buf,
498 ses->router_to_buffer->buf,
499 ses->router_class_buffer->buf,
500 ses->router_command_buffer->buf,
501 ses->router_broadcast );
503 message_set_osrf_xid( msg, ses->osrf_xid_buffer->buf );
505 if( ses->message_error_type->n_used > 0 ) {
506 set_msg_error( msg, ses->message_error_type->buf, ses->message_error_code );
509 if( msg == NULL ) { return; }
510 ses->message_callback( ses->user_data, msg );
513 ses->state_machine->in_message = 0;
514 reset_session_buffers( session );
518 if( strcmp( (const char*) name, "body" ) == 0 ) {
519 ses->state_machine->in_message_body = 0;
523 if( strcmp( (const char*) name, "subject" ) == 0 ) {
524 ses->state_machine->in_subject = 0;
528 if( strcmp( (const char*) name, "thread" ) == 0 ) {
529 ses->state_machine->in_thread = 0;
533 if( strcmp( (const char*) name, "iq" ) == 0 ) {
534 ses->state_machine->in_iq = 0;
535 if( ses->message_error_code > 0 ) {
536 osrfLogWarning( OSRF_LOG_MARK, "Error in IQ packet: code %d", ses->message_error_code );
537 osrfLogWarning( OSRF_LOG_MARK, "Error 401 means not authorized" );
539 reset_session_buffers( session );
543 if( strcmp( (const char*) name, "presence" ) == 0 ) {
544 ses->state_machine->in_presence = 0;
546 if( ses->presence_callback ) {
547 // call the callback with the status, etc.
550 reset_session_buffers( session );
554 if( strcmp( (const char*) name, "status" ) == 0 ) {
555 ses->state_machine->in_status = 0;
559 if( strcmp( (const char*) name, "error" ) == 0 ) {
560 ses->state_machine->in_message_error = 0;
564 if( strcmp( (const char*) name, "error:error" ) == 0 ) {
565 ses->state_machine->in_error = 0;
570 int reset_session_buffers( transport_session* ses ) {
571 buffer_reset( ses->body_buffer );
572 buffer_reset( ses->subject_buffer );
573 buffer_reset( ses->thread_buffer );
574 buffer_reset( ses->from_buffer );
575 buffer_reset( ses->recipient_buffer );
576 buffer_reset( ses->router_from_buffer );
577 buffer_reset( ses->osrf_xid_buffer );
578 buffer_reset( ses->router_to_buffer );
579 buffer_reset( ses->router_class_buffer );
580 buffer_reset( ses->router_command_buffer );
581 buffer_reset( ses->message_error_type );
582 buffer_reset( ses->session_id );
587 // ------------------------------------------------------------------
588 // takes data out of the body of the message and pushes it into
589 // the appropriate buffer
590 // ------------------------------------------------------------------
591 void characterHandler(
592 void *session, const xmlChar *ch, int len) {
595 strncpy( data, (const char*) ch, len );
598 //printf( "Handling characters: %s\n", data );
599 transport_session* ses = (transport_session*) session;
600 if( ! ses ) { return; }
602 /* set the various message parts */
603 if( ses->state_machine->in_message ) {
605 if( ses->state_machine->in_message_body ) {
606 buffer_add( ses->body_buffer, data );
609 if( ses->state_machine->in_subject ) {
610 buffer_add( ses->subject_buffer, data );
613 if( ses->state_machine->in_thread ) {
614 buffer_add( ses->thread_buffer, data );
618 /* set the presence status */
619 if( ses->state_machine->in_presence && ses->state_machine->in_status ) {
620 buffer_add( ses->status_buffer, data );
623 if( ses->state_machine->in_error ) {
625 osrfLogWarning( OSRF_LOG_MARK, "ERROR XML fragment: %s\n", ch );
630 /* XXX change to warning handlers */
631 void parseWarningHandler( void *session, const char* msg, ... ) {
635 fprintf(stdout, "transport_session XML WARNING");
636 vfprintf(stdout, msg, args);
638 fprintf(stderr, "XML WARNING: %s\n", msg );
641 void parseErrorHandler( void *session, const char* msg, ... ){
645 fprintf(stdout, "transport_session XML ERROR");
646 vfprintf(stdout, msg, args);
648 fprintf(stderr, "XML ERROR: %s\n", msg );
652 int session_disconnect( transport_session* session ) {
653 if( session == NULL ) { return 0; }
654 //tcp_send( session->sock_obj, "</stream:stream>");
655 socket_send(session->sock_id, "</stream:stream>");
656 socket_disconnect(session->sock_mgr, session->sock_id);
658 //return tcp_disconnect( session->sock_obj );