void remote_connect_init( void )
{
dns_service_t *found_service = NULL;
char *remote_service_name = NULL;
char *client_name = NULL;
net_response_t *response = NULL;
net_ctx_t *ctx;
int use_ipv4, use_ipv6;
uint32_t initiator = 0, ssrc = 0;
char *p1 = NULL;
char *p2 = NULL;
int remote_port_number = 0;
if( ! config_is_set( "remote.connect" ) )
{
logging_printf(LOGGING_WARN, "remote_connect_init: Called with no remote.connect value\n");
return;
}
remote_service_name = (char *) strdup( config_string_get("remote.connect") );
logging_printf(LOGGING_DEBUG, "remote_connect_init: Looking for [%s]\n", remote_service_name);
p1 = remote_service_name;
p2 = p1 + strlen( remote_service_name );
/* Work backwards to find a colon ':' */
/* If a ']' character is found first, we'll assume this is going to be an direct connect address */
while( p2 > p1 )
{
if( *p2 == ']' ) break;
if( *p2 == ':' ) break;
p2--;
}
/* If no colon ':' or ']' was found, we'll assume this is a service name to be located */
if( p2 == p1 )
{
use_ipv4 = is_yes( config_string_get("service.ipv4") ) ;
use_ipv6 = is_yes( config_string_get("service.ipv6") ) ;
if( dns_discover_services( use_ipv4, use_ipv6 ) <= 0 )
{
logging_printf(LOGGING_WARN, "remote_connect_init: No services available\n");
free( remote_service_name );
return;
}
found_service = dns_discover_by_name( remote_service_name );
goto make_remote_connection;
} else {
/* If there is a colon ':', split the string to determine the port number */
if( *p2 == ':' )
{
*p2='\0';
p2++;
remote_port_number = atoi( p2 );
p2 = remote_service_name + strlen( remote_service_name ) - 1;
}
/* If there is a ']', work forwards from the start of the string to remove the '[' */
if ( *p2 == ']' )
{
*p2='\0';
while( p1 < p2 )
{
if( *p1 == '[' ) break;
p1++;
}
}
if( p1 == p2 )
{
p1 = remote_service_name;
} else {
*p1='\0';
p1++;
}
if( remote_port_number == 0 )
{
logging_printf( LOGGING_ERROR, "remote_connect_init: No port number specified\n");
free( remote_service_name );
return;
}
logging_printf( LOGGING_DEBUG, "remote_connect_init: connect_string=>%s<\n", config_string_get("remote.connect") );
logging_printf( LOGGING_DEBUG, "remote_connect_init: connect_address=>%s<, connect_port=%d\n", p1, remote_port_number );
dns_discover_add( config_string_get("remote.connect"), p1, remote_port_number );
found_service = dns_discover_by_name( config_string_get("remote.connect") );
}
make_remote_connection:
free( remote_service_name );
if( ! found_service )
{
logging_printf(LOGGING_WARN, "remote_connect_init: No service found: %s\n", remote_service_name );
return;
}
logging_printf( LOGGING_DEBUG, "remote_connect_init: Found name=\"%s\" address=[%s]:%d\n", found_service->name, found_service->ip_address, found_service->port);
ssrc = random_number();
initiator = random_number();
client_name = config_string_get("service.name");
if( !client_name )
{
client_name = "RaveloxMIDIClient";
}
response = net_response_inv( ssrc, initiator, client_name );
if( response )
{
ctx = net_ctx_register( ssrc, initiator, found_service->ip_address, found_service->port, found_service->name );
if( ! ctx )
{
logging_printf( LOGGING_ERROR, "remote_connect_init: Unable to create socket context\n");
} else {
ctx->send_ssrc = ssrc;
ctx->status = NET_CTX_STATUS_FIRST_INV;
logging_printf( LOGGING_DEBUG, "remote_connect_init: Sending INV request to [%s]:%d\n", ctx->ip_address, ctx->control_port );
net_ctx_send( ctx, response->buffer, response->len , USE_CONTROL_PORT );
}
}
net_response_destroy( &response );
}
net_response_t * cmd_inv_handler( char *ip_address, uint16_t port, void *data )
{
net_applemidi_command *cmd = NULL;
net_applemidi_inv *inv = NULL;
net_applemidi_inv *accept_inv = NULL;
net_ctx_t *ctx = NULL;
net_response_t *response;
char *service_name = NULL;
if( ! data ) return NULL;
inv = ( net_applemidi_inv *) data;
logging_printf( LOGGING_DEBUG, "INV(%s:%u\n ", ip_address, port );
logging_printf( LOGGING_DEBUG, "\tname=%s\n", inv->name);
logging_printf( LOGGING_DEBUG, "\tssrc=0x%08x\n", inv->ssrc);
logging_printf( LOGGING_DEBUG, "\tversion=0x%08x\n", inv->version);
logging_printf( LOGGING_DEBUG, "\tinitiator=0x%08x )\n", inv->initiator);
ctx = net_ctx_find_by_ssrc( inv->ssrc );
if( ! ctx )
{
logging_printf( LOGGING_DEBUG, "cmd_inv_hander: Registering new connection\n");
ctx = net_ctx_register( inv->ssrc, inv->initiator, ip_address, port );
if( ! ctx )
{
logging_printf( LOGGING_ERROR, "cmd_inv_handler: Error registering connection\n");
}
}
cmd = new_net_applemidi_command( NET_APPLEMIDI_CMD_ACCEPT );
if( ! cmd )
{
logging_printf( LOGGING_ERROR, "Unable to allocate memory for accept_inv command\n");
net_ctx_reset( ctx );
return NULL;
}
accept_inv = new_net_applemidi_inv();
if( ! accept_inv ) {
logging_printf( LOGGING_ERROR, "Unabled to allocate memory for accept_inv command data\n");
free( cmd );
net_ctx_reset( ctx );
return NULL;
}
accept_inv->ssrc = ctx->send_ssrc;
accept_inv->version = 2;
accept_inv->initiator = ctx->initiator;
service_name = config_get("service.name");
if( service_name )
{
accept_inv->name = (char *)strdup( service_name );
} else {
accept_inv->name = (char *)strdup( "RaveloxMIDI" );
}
cmd->data = accept_inv;
response = new_net_response();
if( response )
{
int ret = 0;
ret = net_applemidi_pack( cmd , &(response->buffer), &(response->len) );
if( ret != 0 )
{
logging_printf( LOGGING_ERROR, "Unable to pack response to inv command\n");
net_response_destroy( &response );
}
}
net_applemidi_cmd_destroy( &cmd );
return response;
}
