--- /dev/null
+// fg_socket.cxx -- Socket I/O routines
+//
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999 Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#include <Include/compiler.h>
+
+#include <sys/time.h> // select()
+#include <sys/types.h> // socket(), bind(), select(), accept()
+#include <sys/socket.h> // socket(), bind(), listen(), accept()
+#include <netinet/in.h> // struct sockaddr_in
+#include <netdb.h> // gethostbyname()
+#include <unistd.h> // select()
+
+#include STL_STRING
+
+#include <Debug/logstream.hxx>
+
+#include "fg_socket.hxx"
+
+FG_USING_STD(string);
+
+
+FGSocket::FGSocket() :
+ save_len(0)
+{
+}
+
+
+FGSocket::~FGSocket() {
+}
+
+
+int FGSocket::make_server_socket () {
+ struct sockaddr_in name;
+ socklen_t length;
+
+ // Create the socket.
+ sock = socket (PF_INET, SOCK_STREAM, 0);
+ if (sock < 0) {
+ FG_LOG( FG_IO, FG_ALERT,
+ "Error: socket() failed in make_server_socket()" );
+ return -1;
+ }
+
+ // Give the socket a name.
+ name.sin_family = AF_INET;
+ name.sin_addr.s_addr = INADDR_ANY;
+ name.sin_port = htons(port); // set port to zero to let system pick
+ name.sin_addr.s_addr = htonl (INADDR_ANY);
+ if (bind (sock, (struct sockaddr *) &name, sizeof (name)) < 0) {
+ FG_LOG( FG_IO, FG_ALERT,
+ "Error: bind() failed in make_server_socket()" );
+ return -1;
+ }
+
+ // Find the assigned port number
+ length = sizeof(struct sockaddr_in);
+ if ( getsockname(sock, (struct sockaddr *) &name, &length) ) {
+ FG_LOG( FG_IO, FG_ALERT,
+ "Error: getsockname() failed in make_server_socket()" );
+ return -1;
+ }
+ port = ntohs(name.sin_port);
+
+ return sock;
+}
+
+
+int FGSocket::make_client_socket () {
+ struct sockaddr_in name;
+ struct hostent *hp;
+
+ // Create the socket.
+ sock = socket (PF_INET, SOCK_STREAM, 0);
+ if (sock < 0) {
+ FG_LOG( FG_IO, FG_ALERT,
+ "Error: socket() failed in make_client_socket()" );
+ return -1;
+ }
+
+ // specify address family
+ name.sin_family = AF_INET;
+
+ // get the hosts official name/info
+ hp = gethostbyname( hostname.c_str() );
+
+ // Connect this socket to the host and the port specified on the
+ // command line
+ bcopy(hp->h_addr, &(name.sin_addr.s_addr), hp->h_length);
+ name.sin_port = htons(port);
+
+ if ( connect(sock, (struct sockaddr *) &name,
+ sizeof(struct sockaddr_in)) < 0 )
+ {
+ std::close(sock);
+ FG_LOG( FG_IO, FG_ALERT,
+ "Error: connect() failed in make_client_socket()" );
+ return -1;
+ }
+
+ return sock;
+}
+
+
+// If specified as a server (out direction for now) open the master
+// listening socket. If specified as a client, open a connection to a
+// server.
+
+bool FGSocket::open( FGProtocol::fgProtocolDir dir ) {
+ if ( port_str == "" || port_str == "any" ) {
+ port = 0;
+ } else {
+ port = atoi( port_str.c_str() );
+ }
+
+ client_connections.clear();
+
+ if ( dir == FGProtocol::out ) {
+ // this means server for now
+
+ // Setup socket to listen on. Set "port" before making this
+ // call. A port of "0" indicates that we want to let the os
+ // pick any available port.
+ sock = make_server_socket();
+ cout << "socket is connected to port = " << port << endl;
+
+ // Specify the maximum length of the connection queue
+ listen(sock, FG_MAX_SOCKET_QUEUE);
+
+ } else if ( dir == FGProtocol::in ) {
+ // this means client for now
+
+ sock = make_client_socket();
+ } else {
+ FG_LOG( FG_IO, FG_ALERT,
+ "Error: bidirection mode not available yet for sockets." );
+ return false;
+ }
+
+ if ( sock < 0 ) {
+ FG_LOG( FG_IO, FG_ALERT, "Error opening socket: " << hostname
+ << ":" << port );
+ return false;
+ }
+
+ return true;
+}
+
+
+// read data from socket (client)
+// read a block of data of specified size
+int FGSocket::read( char *buf, int length ) {
+ int result = 0;
+
+ // check for potential input
+ fd_set ready;
+ FD_ZERO(&ready);
+ FD_SET(sock, &ready);
+ struct timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+
+ // test for any input read on sock (returning immediately, even if
+ // nothing)
+ select(32, &ready, 0, 0, &tv);
+
+ if ( FD_ISSET(sock, &ready) ) {
+ result = std::read( sock, buf, length );
+ if ( result != length ) {
+ FG_LOG( FG_IO, FG_INFO,
+ "Warning: read() not enough bytes." );
+ }
+ }
+
+ return result;
+}
+
+
+// read a line of data, length is max size of input buffer
+int FGSocket::readline( char *buf, int length ) {
+ int result = 0;
+
+ // check for potential input
+ fd_set ready;
+ FD_ZERO(&ready);
+ FD_SET(sock, &ready);
+ struct timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+
+ // test for any input read on sock (returning immediately, even if
+ // nothing)
+ select(32, &ready, 0, 0, &tv);
+
+ if ( FD_ISSET(sock, &ready) ) {
+ // read a chunk, keep in the save buffer until we have the
+ // requested amount read
+
+ char *buf_ptr = save_buf + save_len;
+ result = std::read( sock, buf_ptr, FG_MAX_MSG_SIZE - save_len );
+ save_len += result;
+
+ // look for the end of line in save_buf
+ int i;
+ for ( i = 0; i < save_len && save_buf[i] != '\n'; ++i );
+ if ( save_buf[i] == '\n' ) {
+ result = i + 1;
+ } else {
+ // no end of line yet
+ return 0;
+ }
+
+ // we found an end of line
+
+ // copy to external buffer
+ strncpy( buf, save_buf, result );
+ buf[result] = '\0';
+ cout << "fg_serial line = " << buf << endl;
+
+ // shift save buffer
+ for ( i = result; i < save_len; ++i ) {
+ save_buf[ i - result ] = save_buf[i];
+ }
+ save_len -= result;
+ }
+
+ return result;
+}
+
+
+// write data to socket (server)
+int FGSocket::write( char *buf, int length ) {
+
+ // check for any new client connection requests
+ fd_set ready;
+ FD_ZERO(&ready);
+ FD_SET(sock, &ready);
+ struct timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+
+ // test for any input on sock (returning immediately, even if
+ // nothing)
+ select(32, &ready, 0, 0, &tv);
+
+ // any new connections?
+ if ( FD_ISSET(sock, &ready) ) {
+ int msgsock = accept(sock, 0, 0);
+ if ( msgsock < 0 ) {
+ FG_LOG( FG_IO, FG_ALERT,
+ "Error: accept() failed in write()" );
+ return 0;
+ } else {
+ client_connections.push_back( msgsock );
+ }
+ }
+
+ bool error_condition = false;
+ for ( int i = 0; i < (int)client_connections.size(); ++i ) {
+ int msgsock = client_connections[i];
+ if ( std::write(msgsock, buf, length) < 0 ) {
+ FG_LOG( FG_IO, FG_ALERT, "Error writing to socket: " << port );
+ error_condition = true;
+ }
+ }
+
+ if ( error_condition ) {
+ return 0;
+ }
+
+ return length;
+}
+
+
+// close the port
+bool FGSocket::close() {
+ for ( int i = 0; i < (int)client_connections.size(); ++i ) {
+ int msgsock = client_connections[i];
+ std::close( msgsock );
+ }
+
+ std::close( sock );
+
+ return true;
+}
--- /dev/null
+// fg_socket.hxx -- Socket I/O routines
+//
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999 Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _FG_SOCKET_HXX
+#define _FG_SOCKET_HXX
+
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#include <Include/compiler.h>
+
+#include <string>
+
+#include <Include/fg_types.hxx>
+
+#include "iochannel.hxx"
+#include "protocol.hxx"
+
+FG_USING_STD(string);
+
+
+#define FG_MAX_SOCKET_QUEUE 32
+
+
+class FGSocket : public FGIOChannel {
+
+ string hostname;
+ string port_str;
+
+ char save_buf[ 2 * FG_MAX_MSG_SIZE ];
+ int save_len;
+
+ int sock;
+ short unsigned int port;
+
+ // make a server (master listening) socket
+ int make_server_socket();
+
+ // make a client socket
+ int make_client_socket();
+
+ int_list client_connections;
+
+public:
+
+ FGSocket();
+ ~FGSocket();
+
+ // open the file based on specified direction
+ bool open( FGProtocol::fgProtocolDir dir );
+
+ // read data from file
+ int read( char *buf, int length );
+
+ // read data from file
+ int readline( char *buf, int length );
+
+ // write data to a file
+ int write( char *buf, int length );
+
+ // close file
+ bool close();
+
+ inline string get_hostname() const { return hostname; }
+ inline void set_hostname( const string& hn ) { hostname = hn; }
+ inline string get_port_str() const { return port_str; }
+ inline void set_port_str( const string& p ) { port_str = p; }
+};
+
+
+#endif // _FG_SOCKET_HXX
+
+
// parse Garmin message
bool FGGarmin::parse_message() {
- FG_LOG( FG_IO, FG_DEBUG, "parse garmin message" );
+ FG_LOG( FG_IO, FG_INFO, "parse garmin message" );
string msg = buf;
msg = msg.substr( 0, length );
- FG_LOG( FG_IO, FG_DEBUG, "entire message = " << msg );
+ FG_LOG( FG_IO, FG_INFO, "entire message = " << msg );
string::size_type begin_line, end_line, begin, end;
begin_line = begin = 0;
while ( end_line != string::npos ) {
string line = msg.substr(begin_line, end_line - begin_line);
begin_line = end_line + 1;
- FG_LOG( FG_IO, FG_DEBUG, " input line = " << line );
+ FG_LOG( FG_IO, FG_INFO, " input line = " << line );
// leading character
string start = msg.substr(begin, 1);
++begin;
- FG_LOG( FG_IO, FG_DEBUG, " start = " << start );
+ FG_LOG( FG_IO, FG_INFO, " start = " << start );
// sentence
end = msg.find(",", begin);
string sentence = msg.substr(begin, end - begin);
begin = end + 1;
- FG_LOG( FG_IO, FG_DEBUG, " sentence = " << sentence );
+ FG_LOG( FG_IO, FG_INFO, " sentence = " << sentence );
double lon_deg, lon_min, lat_deg, lat_min;
double lon, lat, speed, heading, altitude;
string utc = msg.substr(begin, end - begin);
begin = end + 1;
- FG_LOG( FG_IO, FG_DEBUG, " utc = " << utc );
+ FG_LOG( FG_IO, FG_INFO, " utc = " << utc );
// junk
end = msg.find(",", begin);
string junk = msg.substr(begin, end - begin);
begin = end + 1;
- FG_LOG( FG_IO, FG_DEBUG, " junk = " << junk );
+ FG_LOG( FG_IO, FG_INFO, " junk = " << junk );
// lat val
end = msg.find(",", begin);
}
cur_fdm_state->set_Latitude( lat * DEG_TO_RAD );
- FG_LOG( FG_IO, FG_DEBUG, " lat = " << lat );
+ FG_LOG( FG_IO, FG_INFO, " lat = " << lat );
// lon val
end = msg.find(",", begin);
}
cur_fdm_state->set_Longitude( lon * DEG_TO_RAD );
- FG_LOG( FG_IO, FG_DEBUG, " lon = " << lon );
+ FG_LOG( FG_IO, FG_INFO, " lon = " << lon );
double sl_radius, lat_geoc;
fgGeodToGeoc( cur_fdm_state->get_Latitude(),
speed = atof( speed_str.c_str() );
cur_fdm_state->set_V_equiv_kts( speed );
cur_fdm_state->set_V_ground_speed( speed );
- FG_LOG( FG_IO, FG_DEBUG, " speed = " << speed );
+ FG_LOG( FG_IO, FG_INFO, " speed = " << speed );
// heading
end = msg.find(",", begin);
cur_fdm_state->set_Euler_Angles( cur_fdm_state->get_Phi(),
cur_fdm_state->get_Theta(),
heading * DEG_TO_RAD );
- FG_LOG( FG_IO, FG_DEBUG, " heading = " << heading );
+ FG_LOG( FG_IO, FG_INFO, " heading = " << heading );
} else if ( sentence == "PGRMZ" ) {
// altitude
end = msg.find(",", begin);
cur_fdm_state->set_Altitude( altitude );
- FG_LOG( FG_IO, FG_DEBUG, " altitude = " << altitude );
+ FG_LOG( FG_IO, FG_INFO, " altitude = " << altitude );
}
return false;
}
} else if ( get_direction() == in ) {
- if ( io->readline( buf, FG_MAX_MSG_SIZE ) ) {
- parse_message();
+ if ( length = io->readline( buf, FG_MAX_MSG_SIZE ) ) {
+ FG_LOG( FG_IO, FG_ALERT, "Success reading data." );
+ if ( parse_message() ) {
+ FG_LOG( FG_IO, FG_ALERT, "Success parsing data." );
+ } else {
+ FG_LOG( FG_IO, FG_ALERT, "Error parsing data." );
+ }
} else {
FG_LOG( FG_IO, FG_ALERT, "Error reading data." );
return false;
}
- if ( io->readline( buf, FG_MAX_MSG_SIZE ) ) {
- parse_message();
+ if ( length = io->readline( buf, FG_MAX_MSG_SIZE ) ) {
+ FG_LOG( FG_IO, FG_ALERT, "Success reading data." );
+ if ( parse_message() ) {
+ FG_LOG( FG_IO, FG_ALERT, "Success parsing data." );
+ } else {
+ FG_LOG( FG_IO, FG_ALERT, "Error parsing data." );
+ }
} else {
FG_LOG( FG_IO, FG_ALERT, "Error reading data." );
return false;
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