1 #include "opensrf/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 );
37 if( session->body_buffer == NULL || session->subject_buffer == NULL ||
38 session->thread_buffer == NULL || session->from_buffer == NULL ||
39 session->status_buffer == NULL || session->recipient_buffer == NULL ||
40 session->router_to_buffer == NULL || session->router_from_buffer == NULL ||
41 session->router_class_buffer == NULL || session->router_command_buffer == NULL ||
42 session->session_id == NULL ) {
44 fatal_handler( "init_transport(): buffer_init returned NULL" );
49 /* initialize the jabber state machine */
50 session->state_machine = (jabber_machine*) safe_malloc( sizeof(jabber_machine) );
52 /* initialize the sax push parser */
53 session->parser_ctxt = xmlCreatePushParserCtxt(SAXHandler, session, "", 0, NULL);
55 /* initialize the transport_socket structure */
56 session->sock_obj = (transport_socket*) safe_malloc( sizeof(transport_socket) );
58 //int serv_size = strlen( server );
59 session->sock_obj->server = server;
60 session->sock_obj->port = port;
61 session->sock_obj->data_received_callback = &grab_incoming;
63 /* this will be handed back to us in callbacks */
64 session->sock_obj->user_data = session;
69 /* XXX FREE THE BUFFERS */
70 int session_free( transport_session* session ) {
71 if( ! session ) { return 0; }
73 if( session->sock_obj )
74 free( session->sock_obj );
76 if( session->state_machine ) free( session->state_machine );
77 if( session->parser_ctxt) {
78 xmlCleanupCharEncodingHandlers();
79 xmlFreeDoc( session->parser_ctxt->myDoc );
80 xmlFreeParserCtxt(session->parser_ctxt);
84 buffer_free(session->body_buffer);
85 buffer_free(session->subject_buffer);
86 buffer_free(session->thread_buffer);
87 buffer_free(session->from_buffer);
88 buffer_free(session->recipient_buffer);
89 buffer_free(session->status_buffer);
90 buffer_free(session->message_error_type);
91 buffer_free(session->router_to_buffer);
92 buffer_free(session->router_from_buffer);
93 buffer_free(session->router_class_buffer);
94 buffer_free(session->router_command_buffer);
95 buffer_free(session->session_id);
103 int session_wait( transport_session* session, int timeout ) {
104 if( ! session || ! session->sock_obj ) {
107 int ret = tcp_wait( session->sock_obj, timeout );
109 session->state_machine->connected = 0;
114 int session_send_msg(
115 transport_session* session, transport_message* msg ) {
117 if( ! session ) { return 0; }
119 if( ! session->state_machine->connected ) {
120 warning_handler("State machine is not connected in send_msg()");
124 message_prepare_xml( msg );
125 tcp_send( session->sock_obj, msg->msg_xml );
132 /* connects to server and connects to jabber */
133 int session_connect( transport_session* session,
134 const char* username, const char* password, const char* resource, int connect_timeout ) {
140 warning_handler( "session is null in connect" );
146 session->state_machine->connected =
147 tcp_connected( session->sock_obj );
149 if( session->state_machine->connected ) {
155 char* server = session->sock_obj->server;
157 if( ! session->sock_obj ) {
161 if( ! session->sock_obj->connected ) {
162 if( ! tcp_connect( session->sock_obj ))
166 if( session->component ) {
168 /* the first Jabber connect stanza */
169 char* our_hostname = getenv("HOSTNAME");
170 size1 = 150 + strlen( server );
171 char stanza1[ size1 ];
172 memset( stanza1, 0, size1 );
174 "<stream:stream version='1.0' xmlns:stream='http://etherx.jabber.org/streams' xmlns='jabber:component:accept' to='%s' from='%s' xml:lang='en'>",
175 username, our_hostname );
177 /* send the first stanze */
178 session->state_machine->connecting = CONNECTING_1;
179 if( ! tcp_send( session->sock_obj, stanza1 ) ) {
180 warning_handler("error sending");
185 tcp_wait( session->sock_obj, connect_timeout ); /* make the timeout smarter XXX */
187 /* server acknowledges our existence, now see if we can login */
188 if( session->state_machine->connecting == CONNECTING_2 ) {
190 int ss = session->session_id->n_used + strlen(password) + 5;
192 memset(hashstuff,0,ss);
193 sprintf( hashstuff, "%s%s", session->session_id->buf, password );
195 char* hash = shahash( hashstuff );
196 size2 = 100 + strlen( hash );
197 char stanza2[ size2 ];
198 memset( stanza2, 0, size2 );
199 sprintf( stanza2, "<handshake>%s</handshake>", hash );
201 if( ! tcp_send( session->sock_obj, stanza2 ) ) {
202 warning_handler("error sending");
207 } else { /* we're not a component */
209 /* the first Jabber connect stanza */
210 size1 = 100 + strlen( server );
211 char stanza1[ size1 ];
212 memset( stanza1, 0, size1 );
214 "<stream:stream to='%s' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams'>",
217 /* the second jabber connect stanza including login info*/
218 /* currently, we only support plain text login */
219 size2 = 150 + strlen( username ) + strlen(password) + strlen(resource);
220 char stanza2[ size2 ];
221 memset( stanza2, 0, size2 );
224 "<iq id='123456789' type='set'><query xmlns='jabber:iq:auth'><username>%s</username><password>%s</password><resource>%s</resource></query></iq>",
225 username, password, resource );
228 /* send the first stanze */
229 session->state_machine->connecting = CONNECTING_1;
230 if( ! tcp_send( session->sock_obj, stanza1 ) ) {
231 warning_handler("error sending");
236 tcp_wait( session->sock_obj, connect_timeout ); /* make the timeout smarter XXX */
238 /* server acknowledges our existence, now see if we can login */
239 if( session->state_machine->connecting == CONNECTING_2 ) {
240 if( ! tcp_send( session->sock_obj, stanza2 ) ) {
241 warning_handler("error sending");
249 tcp_wait( session->sock_obj, connect_timeout );
252 if( session->state_machine->connected ) {
260 // ---------------------------------------------------------------------------------
261 // TCP data callback. Shove the data into the push parser.
262 // ---------------------------------------------------------------------------------
263 void grab_incoming( void * session, char* data ) {
264 transport_session* ses = (transport_session*) session;
265 if( ! ses ) { return; }
266 xmlParseChunk(ses->parser_ctxt, data, strlen(data), 0);
270 void startElementHandler(
271 void *session, const xmlChar *name, const xmlChar **atts) {
273 transport_session* ses = (transport_session*) session;
274 if( ! ses ) { return; }
277 if( strcmp( name, "message" ) == 0 ) {
278 ses->state_machine->in_message = 1;
279 buffer_add( ses->from_buffer, get_xml_attr( atts, "from" ) );
280 buffer_add( ses->recipient_buffer, get_xml_attr( atts, "to" ) );
281 buffer_add( ses->router_from_buffer, get_xml_attr( atts, "router_from" ) );
282 buffer_add( ses->router_to_buffer, get_xml_attr( atts, "router_to" ) );
283 buffer_add( ses->router_class_buffer, get_xml_attr( atts, "router_class" ) );
284 buffer_add( ses->router_command_buffer, get_xml_attr( atts, "router_command" ) );
285 char* broadcast = get_xml_attr( atts, "broadcast" );
287 ses->router_broadcast = atoi( broadcast );
292 if( ses->state_machine->in_message ) {
294 if( strcmp( name, "body" ) == 0 ) {
295 ses->state_machine->in_message_body = 1;
299 if( strcmp( name, "subject" ) == 0 ) {
300 ses->state_machine->in_subject = 1;
304 if( strcmp( name, "thread" ) == 0 ) {
305 ses->state_machine->in_thread = 1;
311 if( strcmp( name, "presence" ) == 0 ) {
312 ses->state_machine->in_presence = 1;
313 buffer_add( ses->from_buffer, get_xml_attr( atts, "from" ) );
314 buffer_add( ses->recipient_buffer, get_xml_attr( atts, "to" ) );
318 if( strcmp( name, "status" ) == 0 ) {
319 ses->state_machine->in_status = 1;
324 if( strcmp( name, "stream:error" ) == 0 ) {
325 ses->state_machine->in_error = 1;
326 warning_handler( "Received <stream:error> message from Jabber server" );
331 /* first server response from a connect attempt */
332 if( strcmp( name, "stream:stream" ) == 0 ) {
333 if( ses->state_machine->connecting == CONNECTING_1 ) {
334 ses->state_machine->connecting = CONNECTING_2;
335 buffer_add( ses->session_id, get_xml_attr(atts, "id") );
339 if( strcmp( name, "handshake" ) == 0 ) {
340 ses->state_machine->connected = 1;
341 ses->state_machine->connecting = 0;
346 if( strcmp( name, "error" ) == 0 ) {
347 ses->state_machine->in_message_error = 1;
348 buffer_add( ses->message_error_type, get_xml_attr( atts, "type" ) );
349 ses->message_error_code = atoi( get_xml_attr( atts, "code" ) );
350 warning_handler( "Received <error> message" );
354 if( strcmp( name, "iq" ) == 0 ) {
355 ses->state_machine->in_iq = 1;
357 if( strcmp( get_xml_attr(atts, "type"), "result") == 0
358 && ses->state_machine->connecting == CONNECTING_2 ) {
359 ses->state_machine->connected = 1;
360 ses->state_machine->connecting = 0;
364 if( strcmp( get_xml_attr(atts, "type"), "error") == 0 ) {
365 warning_handler( "Error connecting to jabber" );
371 char* get_xml_attr( const xmlChar** atts, char* attr_name ) {
374 for(i = 0;(atts[i] != NULL);i++) {
375 if( strcmp( atts[i++], attr_name ) == 0 ) {
376 if( atts[i] != NULL ) {
377 return (char*) atts[i];
386 // ------------------------------------------------------------------
387 // See which tags are ending
388 // ------------------------------------------------------------------
389 void endElementHandler( void *session, const xmlChar *name) {
390 transport_session* ses = (transport_session*) session;
391 if( ! ses ) { return; }
393 if( strcmp( name, "message" ) == 0 ) {
395 /* pass off the message info the callback */
396 if( ses->message_callback ) {
398 /* here it's ok to pass in the raw buffers because
399 message_init allocates new space for the chars
401 transport_message* msg = message_init(
402 ses->body_buffer->buf,
403 ses->subject_buffer->buf,
404 ses->thread_buffer->buf,
405 ses->recipient_buffer->buf,
406 ses->from_buffer->buf );
408 message_set_router_info( msg,
409 ses->router_from_buffer->buf,
410 ses->router_to_buffer->buf,
411 ses->router_class_buffer->buf,
412 ses->router_command_buffer->buf,
413 ses->router_broadcast );
415 if( ses->message_error_type->n_used > 0 ) {
416 set_msg_error( msg, ses->message_error_type->buf, ses->message_error_code );
419 if( msg == NULL ) { return; }
420 ses->message_callback( ses->user_data, msg );
423 ses->state_machine->in_message = 0;
424 reset_session_buffers( session );
428 if( strcmp( name, "body" ) == 0 ) {
429 ses->state_machine->in_message_body = 0;
433 if( strcmp( name, "subject" ) == 0 ) {
434 ses->state_machine->in_subject = 0;
438 if( strcmp( name, "thread" ) == 0 ) {
439 ses->state_machine->in_thread = 0;
443 if( strcmp( name, "iq" ) == 0 ) {
444 ses->state_machine->in_iq = 0;
445 if( ses->message_error_code > 0 ) {
446 warning_handler( "Error in IQ packet: code %d", ses->message_error_code );
447 warning_handler( "Error 401 means not authorized" );
449 reset_session_buffers( session );
453 if( strcmp( name, "presence" ) == 0 ) {
454 ses->state_machine->in_presence = 0;
456 if( ses->presence_callback ) {
457 // call the callback with the status, etc.
460 reset_session_buffers( session );
464 if( strcmp( name, "status" ) == 0 ) {
465 ses->state_machine->in_status = 0;
469 if( strcmp( name, "error" ) == 0 ) {
470 ses->state_machine->in_message_error = 0;
474 if( strcmp( name, "error:error" ) == 0 ) {
475 ses->state_machine->in_error = 0;
480 int reset_session_buffers( transport_session* ses ) {
481 buffer_reset( ses->body_buffer );
482 buffer_reset( ses->subject_buffer );
483 buffer_reset( ses->thread_buffer );
484 buffer_reset( ses->from_buffer );
485 buffer_reset( ses->recipient_buffer );
486 buffer_reset( ses->router_from_buffer );
487 buffer_reset( ses->router_to_buffer );
488 buffer_reset( ses->router_class_buffer );
489 buffer_reset( ses->router_command_buffer );
490 buffer_reset( ses->message_error_type );
491 buffer_reset( ses->session_id );
496 // ------------------------------------------------------------------
497 // takes data out of the body of the message and pushes it into
498 // the appropriate buffer
499 // ------------------------------------------------------------------
500 void characterHandler(
501 void *session, const xmlChar *ch, int len) {
504 memset( data, 0, len+1 );
505 strncpy( data, (char*) ch, len );
508 //printf( "Handling characters: %s\n", data );
509 transport_session* ses = (transport_session*) session;
510 if( ! ses ) { return; }
512 /* set the various message parts */
513 if( ses->state_machine->in_message ) {
515 if( ses->state_machine->in_message_body ) {
516 buffer_add( ses->body_buffer, data );
519 if( ses->state_machine->in_subject ) {
520 buffer_add( ses->subject_buffer, data );
523 if( ses->state_machine->in_thread ) {
524 buffer_add( ses->thread_buffer, data );
528 /* set the presence status */
529 if( ses->state_machine->in_presence && ses->state_machine->in_status ) {
530 buffer_add( ses->status_buffer, data );
533 if( ses->state_machine->in_error ) {
535 warning_handler( "ERROR Xml fragment: %s\n", ch );
540 /* XXX change to warning handlers */
541 void parseWarningHandler( void *session, const char* msg, ... ) {
545 fprintf(stdout, "WARNING");
546 vfprintf(stdout, msg, args);
548 fprintf(stderr, "XML WARNING: %s\n", msg );
551 void parseErrorHandler( void *session, const char* msg, ... ){
555 fprintf(stdout, "ERROR");
556 vfprintf(stdout, msg, args);
558 fprintf(stderr, "XML ERROR: %s\n", msg );
562 int session_disconnect( transport_session* session ) {
563 if( session == NULL ) { return 0; }
564 tcp_send( session->sock_obj, "</stream:stream>");
565 return tcp_disconnect( session->sock_obj );