/**
@brief React to the closing of an XML tag.
@param session Pointer to a transport_session, cast to a void pointer.
@param name Pointer to the name of the tag that is closing.
See what kind of tag is closing, and respond accordingly.
*/
static void endElementHandler( void *session, const xmlChar *name) {
transport_session* ses = (transport_session*) session;
if( ! ses ) { return; }
// Bypass a level of indirection, since we'll examine the machine repeatedly:
jabber_machine* machine = ses->state_machine;
if( machine->in_message && strcmp( (char*) name, "message" ) == 0 ) {
/* pass off the message info the callback */
if( ses->message_callback ) {
transport_message* msg = message_init(
OSRF_BUFFER_C_STR( ses->body_buffer ),
OSRF_BUFFER_C_STR( ses->subject_buffer ),
OSRF_BUFFER_C_STR( ses->thread_buffer ),
OSRF_BUFFER_C_STR( ses->recipient_buffer ),
OSRF_BUFFER_C_STR( ses->from_buffer ) );
message_set_router_info( msg,
ses->router_from_buffer->buf,
ses->router_to_buffer->buf,
ses->router_class_buffer->buf,
ses->router_command_buffer->buf,
ses->router_broadcast );
message_set_osrf_xid( msg, ses->osrf_xid_buffer->buf );
if( ses->message_error_type->n_used > 0 ) {
set_msg_error( msg, ses->message_error_type->buf, ses->message_error_code );
}
if( msg == NULL ) { return; }
ses->message_callback( ses->user_data, msg );
}
machine->in_message = 0;
reset_session_buffers( session );
return;
}
if( machine->in_message_body && strcmp( (const char*) name, "body" ) == 0 ) {
machine->in_message_body = 0;
return;
}
if( machine->in_subject && strcmp( (const char*) name, "subject" ) == 0 ) {
machine->in_subject = 0;
return;
}
if( machine->in_thread && strcmp( (const char*) name, "thread" ) == 0 ) {
machine->in_thread = 0;
return;
}
if( machine->in_iq && strcmp( (const char*) name, "iq" ) == 0 ) {
machine->in_iq = 0;
if( ses->message_error_code > 0 ) {
if( 401 == ses->message_error_code )
osrfLogWarning( OSRF_LOG_MARK, "Error 401 in IQ packet: not authorized" );
else
osrfLogWarning( OSRF_LOG_MARK, "Error in IQ packet: code %d",
ses->message_error_code );
}
reset_session_buffers( session );
return;
}
if( machine->in_presence && strcmp( (const char*) name, "presence" ) == 0 ) {
machine->in_presence = 0;
/*
if( ses->presence_callback ) {
// call the callback with the status, etc.
}
*/
reset_session_buffers( session );
return;
}
if( machine->in_status && strcmp( (const char*) name, "status" ) == 0 ) {
machine->in_status = 0;
return;
}
if( machine->in_message_error && strcmp( (const char*) name, "error" ) == 0 ) {
machine->in_message_error = 0;
return;
}
if( machine->in_error && strcmp( (const char*) name, "stream:error" ) == 0 ) {
machine->in_error = 0;
return;
}
}
static int osrfHttpTranslatorProcess(osrfHttpTranslator* trans) {
if(trans->body == NULL)
return HTTP_BAD_REQUEST;
if(!osrfHttpTranslatorSetTo(trans))
return HTTP_BAD_REQUEST;
char* jsonBody = osrfHttpTranslatorParseRequest(trans);
if (NULL == jsonBody)
return HTTP_BAD_REQUEST;
while(client_recv(trans->handle, 0))
continue; // discard any old status messages in the recv queue
// send the message to the recipient
transport_message* tmsg = message_init(
jsonBody, NULL, trans->thread, trans->recipient, NULL);
message_set_osrf_xid(tmsg, osrfLogGetXid());
client_send_message(trans->handle, tmsg);
message_free(tmsg);
free(jsonBody);
if(trans->disconnectOnly) {
osrfLogDebug(OSRF_LOG_MARK, "exiting early on disconnect");
osrfCacheRemove(trans->thread);
return OK;
}
// process the response from the opensrf service
int firstWrite = 1;
while(!trans->complete) {
transport_message* msg = client_recv(trans->handle, trans->timeout);
if(trans->handle->error) {
osrfLogError(OSRF_LOG_MARK, "Transport error");
osrfCacheRemove(trans->thread);
return HTTP_INTERNAL_SERVER_ERROR;
}
if(msg == NULL)
return HTTP_GATEWAY_TIME_OUT;
if(msg->is_error) {
osrfLogError(OSRF_LOG_MARK, "XMPP message resulted in error code %d", msg->error_code);
osrfCacheRemove(trans->thread);
return HTTP_NOT_FOUND;
}
if(!osrfHttpTranslatorCheckStatus(trans, msg))
continue;
if(firstWrite) {
osrfHttpTranslatorInitHeaders(trans, msg);
if(trans->connecting)
osrfHttpTranslatorCacheSession(trans, msg->sender);
firstWrite = 0;
}
if(trans->multipart) {
osrfHttpTranslatorWriteChunk(trans, msg);
if(trans->connectOnly)
break;
} else {
if(!trans->messages)
trans->messages = osrfNewList();
osrfListPush(trans->messages, msg->body);
if(trans->complete || trans->connectOnly) {
growing_buffer* buf = buffer_init(128);
unsigned int i;
OSRF_BUFFER_ADD(buf, osrfListGetIndex(trans->messages, 0));
for(i = 1; i < trans->messages->size; i++) {
buffer_chomp(buf); // chomp off the closing array bracket
char* body = osrfListGetIndex(trans->messages, i);
char newbuf[strlen(body)];
sprintf(newbuf, "%s", body+1); // chomp off the opening array bracket
OSRF_BUFFER_ADD_CHAR(buf, ',');
OSRF_BUFFER_ADD(buf, newbuf);
}
ap_rputs(buf->buf, trans->apreq);
buffer_free(buf);
}
}
}
if(trans->disconnecting) // DISCONNECT within a multi-message batch
osrfCacheRemove(trans->thread);
return OK;
}
/**
* Parse opensrf request and relay the request to the opensrf network.
*/
static size_t on_message_handler_body(void *data,
const WebSocketServer *server, const int type,
unsigned char *buffer, const size_t buffer_size) {
request_rec *r = server->request(server);
jsonObject *msg_wrapper = NULL; // free me
const jsonObject *tmp_obj = NULL;
const jsonObject *osrf_msg = NULL;
const char *service = NULL;
const char *thread = NULL;
const char *log_xid = NULL;
char *msg_body = NULL;
char *recipient = NULL;
int i;
if (buffer_size <= 0) return OK;
// generate a new log trace for this request. it
// may be replaced by a client-provided trace below.
osrfLogMkXid();
osrfLogDebug(OSRF_LOG_MARK, "WS received message size=%d", buffer_size);
// buffer may not be \0-terminated, which jsonParse requires
char buf[buffer_size + 1];
memcpy(buf, buffer, buffer_size);
buf[buffer_size] = '\0';
osrfLogInternal(OSRF_LOG_MARK, "WS received inbound message: %s", buf);
msg_wrapper = jsonParse(buf);
if (msg_wrapper == NULL) {
osrfLogWarning(OSRF_LOG_MARK, "WS Invalid JSON: %s", buf);
return HTTP_BAD_REQUEST;
}
osrf_msg = jsonObjectGetKeyConst(msg_wrapper, "osrf_msg");
if (tmp_obj = jsonObjectGetKeyConst(msg_wrapper, "service"))
service = jsonObjectGetString(tmp_obj);
if (tmp_obj = jsonObjectGetKeyConst(msg_wrapper, "thread"))
thread = jsonObjectGetString(tmp_obj);
if (tmp_obj = jsonObjectGetKeyConst(msg_wrapper, "log_xid"))
log_xid = jsonObjectGetString(tmp_obj);
if (log_xid) {
// use the caller-provide log trace id
if (strlen(log_xid) > MAX_THREAD_SIZE) {
osrfLogWarning(OSRF_LOG_MARK, "WS log_xid exceeds max length");
return HTTP_BAD_REQUEST;
}
osrfLogForceXid(log_xid);
}
if (thread) {
if (strlen(thread) > MAX_THREAD_SIZE) {
osrfLogWarning(OSRF_LOG_MARK, "WS thread exceeds max length");
return HTTP_BAD_REQUEST;
}
// since clients can provide their own threads at session start time,
// the presence of a thread does not guarantee a cached recipient
recipient = (char*) apr_hash_get(
trans->stateful_session_cache, thread, APR_HASH_KEY_STRING);
if (recipient) {
osrfLogDebug(OSRF_LOG_MARK, "WS found cached recipient %s", recipient);
}
}
if (!recipient) {
if (service) {
int size = snprintf(recipient_buf, RECIP_BUF_SIZE - 1,
"%s@%s/%s", trans->osrf_router, trans->osrf_domain, service);
recipient_buf[size] = '\0';
recipient = recipient_buf;
} else {
osrfLogWarning(OSRF_LOG_MARK, "WS Unable to determine recipient");
return HTTP_BAD_REQUEST;
}
}
osrfLogDebug(OSRF_LOG_MARK,
"WS relaying message to opensrf thread=%s, recipient=%s",
thread, recipient);
msg_body = extract_inbound_messages(
r, service, thread, recipient, osrf_msg);
osrfLogInternal(OSRF_LOG_MARK,
"WS relaying inbound message: %s", msg_body);
transport_message *tmsg = message_init(
msg_body, NULL, thread, recipient, NULL);
message_set_osrf_xid(tmsg, osrfLogGetXid());
client_send_message(osrf_handle, tmsg);
osrfLogClearXid();
message_free(tmsg);
jsonObjectFree(msg_wrapper);
free(msg_body);
last_activity_time = time(NULL);
return OK;
}
