1 #include "transport_session.h"
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( char* server, int port, void* user_data, int component ) {
11 /* create the session struct */
12 transport_session* session =
13 (transport_session*) safe_malloc( sizeof(transport_session) );
15 session->user_data = user_data;
17 session->component = component;
19 /* initialize the data buffers */
20 session->body_buffer = buffer_init( JABBER_BODY_BUFSIZE );
21 session->subject_buffer = buffer_init( JABBER_SUBJECT_BUFSIZE );
22 session->thread_buffer = buffer_init( JABBER_THREAD_BUFSIZE );
23 session->from_buffer = buffer_init( JABBER_JID_BUFSIZE );
24 session->status_buffer = buffer_init( JABBER_STATUS_BUFSIZE );
25 session->recipient_buffer = buffer_init( JABBER_JID_BUFSIZE );
26 session->message_error_type = buffer_init( JABBER_JID_BUFSIZE );
27 session->session_id = buffer_init( 64 );
29 /* for OpenSRF extensions */
30 session->router_to_buffer = buffer_init( JABBER_JID_BUFSIZE );
31 session->router_from_buffer = buffer_init( JABBER_JID_BUFSIZE );
32 session->router_class_buffer = buffer_init( JABBER_JID_BUFSIZE );
33 session->router_command_buffer = buffer_init( JABBER_JID_BUFSIZE );
36 if( session->body_buffer == NULL || session->subject_buffer == NULL ||
37 session->thread_buffer == NULL || session->from_buffer == NULL ||
38 session->status_buffer == NULL || session->recipient_buffer == NULL ||
39 session->router_to_buffer == NULL || session->router_from_buffer == NULL ||
40 session->router_class_buffer == NULL || session->router_command_buffer == NULL ||
41 session->session_id == NULL ) {
43 fatal_handler( "init_transport(): buffer_init returned NULL" );
48 /* initialize the jabber state machine */
49 session->state_machine = (jabber_machine*) safe_malloc( sizeof(jabber_machine) );
51 /* initialize the sax push parser */
52 session->parser_ctxt = xmlCreatePushParserCtxt(SAXHandler, session, "", 0, NULL);
54 /* initialize the transport_socket structure */
55 session->sock_obj = (transport_socket*) safe_malloc( sizeof(transport_socket) );
57 //int serv_size = strlen( server );
58 session->sock_obj->server = server;
59 session->sock_obj->port = port;
60 session->sock_obj->data_received_callback = &grab_incoming;
62 /* this will be handed back to us in callbacks */
63 session->sock_obj->user_data = session;
70 /* XXX FREE THE BUFFERS */
71 int session_free( transport_session* session ) {
72 if( ! session ) { return 0; }
74 if( session->sock_obj )
75 free( session->sock_obj );
77 if( session->state_machine ) free( session->state_machine );
78 if( session->parser_ctxt) {
79 xmlCleanupCharEncodingHandlers();
80 xmlFreeDoc( session->parser_ctxt->myDoc );
81 xmlFreeParserCtxt(session->parser_ctxt);
85 buffer_free(session->body_buffer);
86 buffer_free(session->subject_buffer);
87 buffer_free(session->thread_buffer);
88 buffer_free(session->from_buffer);
89 buffer_free(session->recipient_buffer);
90 buffer_free(session->status_buffer);
91 buffer_free(session->message_error_type);
92 buffer_free(session->router_to_buffer);
93 buffer_free(session->router_from_buffer);
94 buffer_free(session->router_class_buffer);
95 buffer_free(session->router_command_buffer);
96 buffer_free(session->session_id);
104 int session_wait( transport_session* session, int timeout ) {
105 if( ! session || ! session->sock_obj ) {
108 int ret = tcp_wait( session->sock_obj, timeout );
110 session->state_machine->connected = 0;
115 int session_send_msg(
116 transport_session* session, transport_message* msg ) {
118 if( ! session ) { return 0; }
120 if( ! session->state_machine->connected ) {
121 warning_handler("State machine is not connected in send_msg()");
125 message_prepare_xml( msg );
126 tcp_send( session->sock_obj, msg->msg_xml );
133 /* connects to server and connects to jabber */
134 int session_connect( transport_session* session,
135 const char* username, const char* password,
136 const char* resource, int connect_timeout, enum TRANSPORT_AUTH_TYPE auth_type ) {
142 warning_handler( "session is null in connect" );
147 char* server = session->sock_obj->server;
149 if( ! session->sock_obj ) {
153 if( ! session->sock_obj->connected ) {
154 if( ! tcp_connect( session->sock_obj ))
158 if( session->component ) {
160 /* the first Jabber connect stanza */
161 char* our_hostname = getenv("HOSTNAME");
162 size1 = 150 + strlen( server );
163 char stanza1[ size1 ];
164 memset( stanza1, 0, size1 );
166 "<stream:stream version='1.0' xmlns:stream='http://etherx.jabber.org/streams' "
167 "xmlns='jabber:component:accept' to='%s' from='%s' xml:lang='en'>",
168 username, our_hostname );
170 /* send the first stanze */
171 session->state_machine->connecting = CONNECTING_1;
172 if( ! tcp_send( session->sock_obj, stanza1 ) ) {
173 warning_handler("error sending");
178 tcp_wait( session->sock_obj, connect_timeout ); /* make the timeout smarter XXX */
180 /* server acknowledges our existence, now see if we can login */
181 if( session->state_machine->connecting == CONNECTING_2 ) {
183 int ss = session->session_id->n_used + strlen(password) + 5;
185 memset(hashstuff,0,ss);
186 sprintf( hashstuff, "%s%s", session->session_id->buf, password );
188 char* hash = shahash( hashstuff );
189 size2 = 100 + strlen( hash );
190 char stanza2[ size2 ];
191 memset( stanza2, 0, size2 );
192 sprintf( stanza2, "<handshake>%s</handshake>", hash );
194 if( ! tcp_send( session->sock_obj, stanza2 ) ) {
195 warning_handler("error sending");
200 } else { /* we're not a component */
202 /* the first Jabber connect stanza */
203 size1 = 100 + strlen( server );
204 char stanza1[ size1 ];
205 memset( stanza1, 0, size1 );
207 "<stream:stream to='%s' xmlns='jabber:client' "
208 "xmlns:stream='http://etherx.jabber.org/streams'>",
212 /* send the first stanze */
213 session->state_machine->connecting = CONNECTING_1;
214 if( ! tcp_send( session->sock_obj, stanza1 ) ) {
215 warning_handler("error sending");
221 tcp_wait( session->sock_obj, connect_timeout ); /* make the timeout smarter XXX */
223 if( auth_type == AUTH_PLAIN ) {
225 /* the second jabber connect stanza including login info*/
226 size2 = 150 + strlen( username ) + strlen(password) + strlen(resource);
227 char stanza2[ size2 ];
228 memset( stanza2, 0, size2 );
231 "<iq id='123456789' type='set'><query xmlns='jabber:iq:auth'>"
232 "<username>%s</username><password>%s</password><resource>%s</resource></query></iq>",
233 username, password, resource );
235 /* server acknowledges our existence, now see if we can login */
236 if( session->state_machine->connecting == CONNECTING_2 ) {
237 if( ! tcp_send( session->sock_obj, stanza2 ) ) {
238 warning_handler("error sending");
243 } else if( auth_type == AUTH_DIGEST ) {
245 int ss = session->session_id->n_used + strlen(password) + 5;
247 memset(hashstuff,0,ss);
248 sprintf( hashstuff, "%s%s", session->session_id->buf, password );
250 char* hash = shahash( hashstuff );
252 /* the second jabber connect stanza including login info*/
253 size2 = 150 + strlen( hash ) + strlen(password) + strlen(resource);
254 char stanza2[ size2 ];
255 memset( stanza2, 0, size2 );
258 "<iq id='123456789' type='set'><query xmlns='jabber:iq:auth'>"
259 "<username>%s</username><digest>%s</digest><resource>%s</resource></query></iq>",
260 username, hash, resource );
262 /* server acknowledges our existence, now see if we can login */
263 if( session->state_machine->connecting == CONNECTING_2 ) {
264 if( ! tcp_send( session->sock_obj, stanza2 ) ) {
265 warning_handler("error sending");
276 tcp_wait( session->sock_obj, connect_timeout );
278 if( session->state_machine->connected ) {
286 // ---------------------------------------------------------------------------------
287 // TCP data callback. Shove the data into the push parser.
288 // ---------------------------------------------------------------------------------
289 void grab_incoming( void * session, char* data ) {
290 transport_session* ses = (transport_session*) session;
291 if( ! ses ) { return; }
292 debug_handler("Parsing incoming XML chunk");
293 xmlParseChunk(ses->parser_ctxt, data, strlen(data), 0);
294 debug_handler("Completed parsing incoming XML chunk");
298 void startElementHandler(
299 void *session, const xmlChar *name, const xmlChar **atts) {
301 transport_session* ses = (transport_session*) session;
302 if( ! ses ) { return; }
305 if( strcmp( name, "message" ) == 0 ) {
306 ses->state_machine->in_message = 1;
307 buffer_add( ses->from_buffer, get_xml_attr( atts, "from" ) );
308 buffer_add( ses->recipient_buffer, get_xml_attr( atts, "to" ) );
309 buffer_add( ses->router_from_buffer, get_xml_attr( atts, "router_from" ) );
310 buffer_add( ses->router_to_buffer, get_xml_attr( atts, "router_to" ) );
311 buffer_add( ses->router_class_buffer, get_xml_attr( atts, "router_class" ) );
312 buffer_add( ses->router_command_buffer, get_xml_attr( atts, "router_command" ) );
313 char* broadcast = get_xml_attr( atts, "broadcast" );
315 ses->router_broadcast = atoi( broadcast );
320 if( ses->state_machine->in_message ) {
322 if( strcmp( name, "body" ) == 0 ) {
323 ses->state_machine->in_message_body = 1;
327 if( strcmp( name, "subject" ) == 0 ) {
328 ses->state_machine->in_subject = 1;
332 if( strcmp( name, "thread" ) == 0 ) {
333 ses->state_machine->in_thread = 1;
339 if( strcmp( name, "presence" ) == 0 ) {
340 ses->state_machine->in_presence = 1;
341 buffer_add( ses->from_buffer, get_xml_attr( atts, "from" ) );
342 buffer_add( ses->recipient_buffer, get_xml_attr( atts, "to" ) );
346 if( strcmp( name, "status" ) == 0 ) {
347 ses->state_machine->in_status = 1;
352 if( strcmp( name, "stream:error" ) == 0 ) {
353 ses->state_machine->in_error = 1;
354 warning_handler( "Received <stream:error> message from Jabber server" );
359 /* first server response from a connect attempt */
360 if( strcmp( name, "stream:stream" ) == 0 ) {
361 if( ses->state_machine->connecting == CONNECTING_1 ) {
362 ses->state_machine->connecting = CONNECTING_2;
363 buffer_add( ses->session_id, get_xml_attr(atts, "id") );
367 if( strcmp( name, "handshake" ) == 0 ) {
368 ses->state_machine->connected = 1;
369 ses->state_machine->connecting = 0;
374 if( strcmp( name, "error" ) == 0 ) {
375 ses->state_machine->in_message_error = 1;
376 buffer_add( ses->message_error_type, get_xml_attr( atts, "type" ) );
377 ses->message_error_code = atoi( get_xml_attr( atts, "code" ) );
378 warning_handler( "Received <error> message" );
382 if( strcmp( name, "iq" ) == 0 ) {
383 ses->state_machine->in_iq = 1;
385 if( strcmp( get_xml_attr(atts, "type"), "result") == 0
386 && ses->state_machine->connecting == CONNECTING_2 ) {
387 ses->state_machine->connected = 1;
388 ses->state_machine->connecting = 0;
392 if( strcmp( get_xml_attr(atts, "type"), "error") == 0 ) {
393 warning_handler( "Error connecting to jabber" );
399 char* get_xml_attr( const xmlChar** atts, char* attr_name ) {
402 for(i = 0;(atts[i] != NULL);i++) {
403 if( strcmp( atts[i++], attr_name ) == 0 ) {
404 if( atts[i] != NULL ) {
405 return (char*) atts[i];
414 // ------------------------------------------------------------------
415 // See which tags are ending
416 // ------------------------------------------------------------------
417 void endElementHandler( void *session, const xmlChar *name) {
418 transport_session* ses = (transport_session*) session;
419 if( ! ses ) { return; }
421 if( strcmp( name, "message" ) == 0 ) {
424 /* pass off the message info the callback */
425 if( ses->message_callback ) {
427 /* here it's ok to pass in the raw buffers because
428 message_init allocates new space for the chars
430 transport_message* msg = message_init(
431 ses->body_buffer->buf,
432 ses->subject_buffer->buf,
433 ses->thread_buffer->buf,
434 ses->recipient_buffer->buf,
435 ses->from_buffer->buf );
437 message_set_router_info( msg,
438 ses->router_from_buffer->buf,
439 ses->router_to_buffer->buf,
440 ses->router_class_buffer->buf,
441 ses->router_command_buffer->buf,
442 ses->router_broadcast );
444 if( ses->message_error_type->n_used > 0 ) {
445 set_msg_error( msg, ses->message_error_type->buf, ses->message_error_code );
448 if( msg == NULL ) { return; }
449 ses->message_callback( ses->user_data, msg );
452 ses->state_machine->in_message = 0;
453 reset_session_buffers( session );
457 if( strcmp( name, "body" ) == 0 ) {
458 ses->state_machine->in_message_body = 0;
462 if( strcmp( name, "subject" ) == 0 ) {
463 ses->state_machine->in_subject = 0;
467 if( strcmp( name, "thread" ) == 0 ) {
468 ses->state_machine->in_thread = 0;
472 if( strcmp( name, "iq" ) == 0 ) {
473 ses->state_machine->in_iq = 0;
474 if( ses->message_error_code > 0 ) {
475 warning_handler( "Error in IQ packet: code %d", ses->message_error_code );
476 warning_handler( "Error 401 means not authorized" );
478 reset_session_buffers( session );
482 if( strcmp( name, "presence" ) == 0 ) {
483 ses->state_machine->in_presence = 0;
485 if( ses->presence_callback ) {
486 // call the callback with the status, etc.
489 reset_session_buffers( session );
493 if( strcmp( name, "status" ) == 0 ) {
494 ses->state_machine->in_status = 0;
498 if( strcmp( name, "error" ) == 0 ) {
499 ses->state_machine->in_message_error = 0;
503 if( strcmp( name, "error:error" ) == 0 ) {
504 ses->state_machine->in_error = 0;
509 int reset_session_buffers( transport_session* ses ) {
510 buffer_reset( ses->body_buffer );
511 buffer_reset( ses->subject_buffer );
512 buffer_reset( ses->thread_buffer );
513 buffer_reset( ses->from_buffer );
514 buffer_reset( ses->recipient_buffer );
515 buffer_reset( ses->router_from_buffer );
516 buffer_reset( ses->router_to_buffer );
517 buffer_reset( ses->router_class_buffer );
518 buffer_reset( ses->router_command_buffer );
519 buffer_reset( ses->message_error_type );
520 buffer_reset( ses->session_id );
525 // ------------------------------------------------------------------
526 // takes data out of the body of the message and pushes it into
527 // the appropriate buffer
528 // ------------------------------------------------------------------
529 void characterHandler(
530 void *session, const xmlChar *ch, int len) {
533 memset( data, 0, len+1 );
534 strncpy( data, (char*) ch, len );
537 //printf( "Handling characters: %s\n", data );
538 transport_session* ses = (transport_session*) session;
539 if( ! ses ) { return; }
541 /* set the various message parts */
542 if( ses->state_machine->in_message ) {
544 if( ses->state_machine->in_message_body ) {
545 buffer_add( ses->body_buffer, data );
548 if( ses->state_machine->in_subject ) {
549 buffer_add( ses->subject_buffer, data );
552 if( ses->state_machine->in_thread ) {
553 buffer_add( ses->thread_buffer, data );
557 /* set the presence status */
558 if( ses->state_machine->in_presence && ses->state_machine->in_status ) {
559 buffer_add( ses->status_buffer, data );
562 if( ses->state_machine->in_error ) {
564 warning_handler( "ERROR Xml fragment: %s\n", ch );
569 /* XXX change to warning handlers */
570 void parseWarningHandler( void *session, const char* msg, ... ) {
574 fprintf(stdout, "transport_session XML WARNING");
575 vfprintf(stdout, msg, args);
577 fprintf(stderr, "XML WARNING: %s\n", msg );
580 void parseErrorHandler( void *session, const char* msg, ... ){
584 fprintf(stdout, "transport_session XML ERROR");
585 vfprintf(stdout, msg, args);
587 fprintf(stderr, "XML ERROR: %s\n", msg );
591 int session_disconnect( transport_session* session ) {
592 if( session == NULL ) { return 0; }
593 tcp_send( session->sock_obj, "</stream:stream>");
594 return tcp_disconnect( session->sock_obj );