[5] | 1 | /*
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[467] | 2 | * $Id: NtripLinuxServer.c,v 1.28 2007/06/06 09:44:27 stoecker Exp $
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[5] | 3 | *
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[398] | 4 | * Copyright (c) 2003...2007
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[5] | 5 | * German Federal Agency for Cartography and Geodesy (BKG)
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| 6 | *
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| 7 | * Developed for Networked Transport of RTCM via Internet Protocol (NTRIP)
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| 8 | * for streaming GNSS data over the Internet.
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| 9 | *
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| 10 | * Designed by Informatik Centrum Dortmund http://www.icd.de
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| 11 | *
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| 12 | * The BKG disclaims any liability nor responsibility to any person or
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[467] | 13 | * entity with respect to any loss or damage caused, or alleged to be
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| 14 | * caused, directly or indirectly by the use and application of the NTRIP
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[5] | 15 | * technology.
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| 16 | *
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| 17 | * For latest information and updates, access:
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[467] | 18 | * http://igs.bkg.bund.de/index_ntrip_down.htm
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[5] | 19 | *
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[467] | 20 | * BKG, Frankfurt, Germany, February 2007
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[5] | 21 | * E-mail: euref-ip@bkg.bund.de
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| 22 | *
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| 23 | * This program is free software; you can redistribute it and/or
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| 24 | * modify it under the terms of the GNU General Public License
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| 25 | * as published by the Free Software Foundation; either version 2
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| 26 | * of the License, or (at your option) any later version.
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| 27 | *
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| 28 | * This program is distributed in the hope that it will be useful,
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| 29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 31 | * GNU General Public License for more details.
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| 32 | *
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| 33 | * You should have received a copy of the GNU General Public License
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| 34 | * along with this program; if not, write to the Free Software
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[467] | 35 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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[5] | 36 | */
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| 37 |
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[466] | 38 | /* CVS revision and version */
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[467] | 39 | static char revisionstr[] = "$Revision: 1.28 $";
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| 40 | static char datestr[] = "$Date: 2007/06/06 09:44:27 $";
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[5] | 41 |
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[18] | 42 | #include <ctype.h>
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| 43 | #include <errno.h>
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| 44 | #include <fcntl.h>
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| 45 | #include <getopt.h>
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| 46 | #include <netdb.h>
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[23] | 47 | #include <signal.h>
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[5] | 48 | #include <stdio.h>
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[18] | 49 | #include <stdlib.h>
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[5] | 50 | #include <string.h>
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| 51 | #include <unistd.h>
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[18] | 52 | #include <arpa/inet.h>
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| 53 | #include <netinet/in.h>
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[5] | 54 | #include <sys/socket.h>
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| 55 | #include <sys/termios.h>
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[18] | 56 | #include <sys/types.h>
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[467] | 57 | #include <sys/time.h>
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[5] | 58 |
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[439] | 59 | #ifndef COMPILEDATE
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| 60 | #define COMPILEDATE " built " __DATE__
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| 61 | #endif
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| 62 |
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[18] | 63 | #ifndef MSG_DONTWAIT
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| 64 | #define MSG_DONTWAIT 0 /* prevent compiler errors */
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| 65 | #endif
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| 66 | #ifndef O_EXLOCK
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| 67 | #define O_EXLOCK 0 /* prevent compiler errors */
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| 68 | #endif
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[5] | 69 |
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[32] | 70 | enum MODE { SERIAL = 1, TCPSOCKET = 2, INFILE = 3, SISNET = 4, UDPSOCKET = 5,
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[467] | 71 | CASTER = 6, LAST };
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[5] | 72 |
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[467] | 73 | enum OUTMODE { NTRIPV1, HTTP, RTSP, END };
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| 74 |
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[466] | 75 | #define AGENTSTRING "NTRIP NtripServerLinux"
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[18] | 76 | #define BUFSZ 1024
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[467] | 77 | #define SZ 64
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[18] | 78 |
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[5] | 79 | /* default socket source */
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[326] | 80 | #define SERV_HOST_ADDR "localhost"
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| 81 | #define SERV_TCP_PORT 2101
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[5] | 82 |
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| 83 | /* default destination */
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[18] | 84 | #define NTRIP_CASTER "www.euref-ip.net"
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[398] | 85 | #define NTRIP_PORT 2101
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[5] | 86 |
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[23] | 87 | /* default sisnet source */
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| 88 | #define SISNET_SERVER "131.176.49.142"
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| 89 | #define SISNET_PORT 7777
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| 90 |
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| 91 | #define ALARMTIME 60
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| 92 |
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[467] | 93 | #define RTP_VERSION 2
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| 94 | #define TIME_RESOLUTION 125
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| 95 |
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[22] | 96 | static int ttybaud = 19200;
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| 97 | static const char *ttyport = "/dev/gps";
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| 98 | static const char *filepath = "/dev/stdin";
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[467] | 99 | static enum MODE inputmode = INFILE;
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[45] | 100 | static int sisnet = 31;
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[23] | 101 | static int gpsfd = -1;
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[467] | 102 | static int sigint_received = 0;
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[5] | 103 |
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| 104 | /* Forward references */
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[467] | 105 | static int openserial(const char * tty, int blocksz, int baud);
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| 106 | static void send_receive_loop(int sock, int fd, int outmode,
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| 107 | struct sockaddr * pcasterRTP, socklen_t length);
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| 108 | static void usage(int, char *);
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| 109 | static int encode(char *buf, int size, const char *user, const char *pwd);
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| 110 | static int send_to_caster(char *input, int socket, int input_size);
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| 111 | static void close_session(int sock_udp, int sock_tcp,
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| 112 | const char *caster_addr, const char *mountpoint, int cseq,
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| 113 | int session, char *rtsp_ext, int in_fd);
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[5] | 114 |
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[467] | 115 | /* Signal Handling */
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| 116 | static void handle_sigint(int sig);
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| 117 | static void setup_signal_handler(int sig, void (*handler)(int));
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| 118 | static int signal_was_caught(void);
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| 119 |
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[30] | 120 | #ifdef __GNUC__
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| 121 | static __attribute__ ((noreturn)) void sighandler_alarm(
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| 122 | int sig __attribute__((__unused__)))
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| 123 | #else /* __GNUC__ */
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| 124 | static void sighandler_alarm(int sig)
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| 125 | #endif /* __GNUC__ */
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[23] | 126 | {
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| 127 | fprintf(stderr, "ERROR: more than %d seconds no activity\n", ALARMTIME);
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| 128 | exit(1);
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| 129 | }
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| 130 |
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[5] | 131 | /*
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| 132 | * main
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| 133 | *
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| 134 | * Main entry point for the program. Processes command-line arguments and
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| 135 | * prepares for action.
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| 136 | *
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| 137 | * Parameters:
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| 138 | * argc : integer : Number of command-line arguments.
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[32] | 139 | * argv : array of char : Command-line arguments as an array of
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| 140 | * zero-terminated pointers to strings.
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[5] | 141 | *
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| 142 | * Return Value:
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| 143 | * The function does not return a value (although its return type is int).
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| 144 | *
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| 145 | * Remarks:
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| 146 | *
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| 147 | */
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| 148 |
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[18] | 149 | int main(int argc, char **argv)
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[5] | 150 | {
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[467] | 151 | int c;
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| 152 | int size = 2048; /* for setting send buffer size */
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| 153 | struct sockaddr_in caster;
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| 154 | const char * proxyhost = "";
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| 155 | unsigned int proxyport = 0;
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| 156 | /*** INPUT ***/
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| 157 | const char * casterinhost = 0;
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| 158 | unsigned int casterinport = 0;
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| 159 | const char * inhost = 0;
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| 160 | unsigned int inport = 0;
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[18] | 161 |
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[467] | 162 | char get_extension[SZ] = "";
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[5] | 163 |
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[467] | 164 | struct hostent * he;
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| 165 | const char * mountpoint = NULL;
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| 166 |
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| 167 | const char * sisnetpassword = "";
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| 168 | const char * sisnetuser = "";
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| 169 |
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| 170 | const char * stream_name = 0;
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| 171 | const char * stream_user = 0;
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| 172 | const char * stream_password = 0;
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| 173 |
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| 174 | const char * recvrid= 0;
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| 175 | const char * recvrpwd = 0;
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| 176 |
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| 177 | const char * initfile = NULL;
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| 178 |
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| 179 | int bindmode = 0;
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| 180 |
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| 181 | /*** OUTPUT ***/
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| 182 | const char * casterouthost = 0;
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| 183 | unsigned int casteroutport = 0;
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| 184 | const char * outhost = 0;
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| 185 | unsigned int outport = 0;
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| 186 | char post_extension[SZ] = "";
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| 187 | char rtsp_extension[SZ] = "";
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| 188 |
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| 189 | const char * ntrip_str = "";
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| 190 |
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| 191 | const char * user = "";
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| 192 | const char * password = "";
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| 193 |
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| 194 | int socket_tcp = 0;
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| 195 | int outputmode = NTRIPV1;
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| 196 |
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| 197 | struct sockaddr_in casterRTP;
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| 198 | struct sockaddr_in local;
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| 199 | int socket_udp = 0;
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| 200 | int client_port = 0;
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| 201 | int server_port = 0;
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| 202 | int session = 0;
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| 203 | int cseq = 0;
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| 204 | socklen_t len = 0;
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| 205 | int i = 0;
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| 206 |
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| 207 | char szSendBuffer[BUFSZ];
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| 208 | char authorization[SZ];
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| 209 | int nBufferBytes = 0;
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| 210 | char * dlim = " \r\n=";
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| 211 | char * token;
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| 212 | char * tok_buf[BUFSZ];
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| 213 |
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[466] | 214 | setbuf(stdout, 0);
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| 215 | setbuf(stdin, 0);
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| 216 | setbuf(stderr, 0);
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| 217 |
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[467] | 218 | {
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[466] | 219 | char *a;
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| 220 | int i = 0;
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| 221 | for(a = revisionstr+11; *a && *a != ' '; ++a)
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| 222 | revisionstr[i++] = *a;
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| 223 | revisionstr[i] = 0;
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| 224 | datestr[0] = datestr[7];
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| 225 | datestr[1] = datestr[8];
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| 226 | datestr[2] = datestr[9];
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| 227 | datestr[3] = datestr[10];
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| 228 | datestr[5] = datestr[12];
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| 229 | datestr[6] = datestr[13];
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| 230 | datestr[8] = datestr[15];
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| 231 | datestr[9] = datestr[16];
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| 232 | datestr[4] = datestr[7] = '-';
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| 233 | datestr[10] = 0;
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[467] | 234 | }
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[466] | 235 |
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[467] | 236 | /* setup signal handler for timeout */
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[23] | 237 | signal(SIGALRM,sighandler_alarm);
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| 238 | alarm(ALARMTIME);
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[467] | 239 |
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[18] | 240 | /* get and check program arguments */
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| 241 | if(argc <= 1)
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| 242 | {
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[466] | 243 | usage(2, argv[0]);
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[18] | 244 | exit(1);
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| 245 | }
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[467] | 246 | while((c = getopt(argc, argv,
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| 247 | "M:i:h:b:p:s:a:m:c:H:P:f:x:y:l:u:V:D:U:W:B:O:E:F:N:n:")) != EOF)
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[18] | 248 | {
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| 249 | switch (c)
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[5] | 250 | {
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[467] | 251 | case 'M': /*** InputMode ***/
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| 252 | if(!strcmp(optarg, "serial")) inputmode = SERIAL;
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| 253 | else if(!strcmp(optarg, "tcpsocket")) inputmode = TCPSOCKET;
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| 254 | else if(!strcmp(optarg, "file")) inputmode = INFILE;
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| 255 | else if(!strcmp(optarg, "sisnet")) inputmode = SISNET;
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| 256 | else if(!strcmp(optarg, "udpsocket")) inputmode = UDPSOCKET;
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| 257 | else if(!strcmp(optarg, "caster")) inputmode = CASTER;
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| 258 | else inputmode = atoi(optarg);
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| 259 | if((inputmode == 0) || (inputmode >= LAST))
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[18] | 260 | {
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[467] | 261 | fprintf(stderr, "ERROR: can't convert <%s> to a valid InputMode\n",
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| 262 | optarg);
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[466] | 263 | usage(-1, argv[0]);
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[18] | 264 | }
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| 265 | break;
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[467] | 266 | case 'i': /* serial input device */
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[22] | 267 | ttyport = optarg;
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[18] | 268 | break;
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[467] | 269 | case 'B': /* bind to incoming UDP stream */
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[24] | 270 | bindmode = 1;
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| 271 | break;
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[467] | 272 | case 'V': /* Sisnet data server version number */
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| 273 | if(!strcmp("3.0", optarg)) sisnet = 30;
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[45] | 274 | else if(!strcmp("3.1", optarg)) sisnet = 31;
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[48] | 275 | else if(!strcmp("2.1", optarg)) sisnet = 21;
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[45] | 276 | else
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[23] | 277 | {
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[467] | 278 | fprintf(stderr, "ERROR: unknown SISNeT version <%s>\n", optarg);
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[466] | 279 | usage(-2, argv[0]);
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[23] | 280 | }
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[45] | 281 | break;
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[467] | 282 | case 'b': /* serial input baud rate */
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[18] | 283 | ttybaud = atoi(optarg);
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| 284 | if(ttybaud <= 1)
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| 285 | {
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[467] | 286 | fprintf(stderr, "ERROR: can't convert <%s> to valid serial baud rate\n",
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[32] | 287 | optarg);
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[466] | 288 | usage(1, argv[0]);
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[18] | 289 | }
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| 290 | break;
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[467] | 291 | case 'a': /* Destination caster address */
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| 292 | casterouthost = optarg;
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[18] | 293 | break;
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[467] | 294 | case 'p': /* Destination caster port */
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| 295 | casteroutport = atoi(optarg);
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| 296 | if(casteroutport <= 1 || casteroutport > 65535)
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[18] | 297 | {
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[32] | 298 | fprintf(stderr,
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[467] | 299 | "ERROR: can't convert <%s> to a valid HTTP server port\n", optarg);
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[466] | 300 | usage(1, argv[0]);
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[18] | 301 | }
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| 302 | break;
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[467] | 303 | case 'm': /* Destination caster mountpoint for stream upload */
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[18] | 304 | mountpoint = optarg;
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| 305 | break;
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[467] | 306 | case 's': /* File name for input data simulation from file */
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[18] | 307 | filepath = optarg;
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| 308 | break;
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[467] | 309 | case 'f': /* name of an initialization file */
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[21] | 310 | initfile = optarg;
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| 311 | break;
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[467] | 312 | case 'x': /* user ID to access incoming stream */
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| 313 | recvrid = optarg;
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| 314 | break;
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| 315 | case 'y': /* password to access incoming stream */
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| 316 | recvrpwd = optarg;
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| 317 | break;
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| 318 | case 'u': /* Sisnet data server user ID */
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[23] | 319 | sisnetuser = optarg;
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| 320 | break;
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[467] | 321 | case 'l': /* Sisnet data server password */
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[23] | 322 | sisnetpassword = optarg;
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| 323 | break;
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[467] | 324 | case 'c': /* DestinationCaster password for stream upload to mountpoint */
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[18] | 325 | password = optarg;
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| 326 | break;
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[467] | 327 | case 'H': /* Input host address*/
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| 328 | casterinhost = optarg;
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[18] | 329 | break;
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[467] | 330 | case 'P': /* Input port */
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| 331 | casterinport = atoi(optarg);
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| 332 | if(casterinport <= 1 || casterinport > 65535)
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[18] | 333 | {
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[467] | 334 | fprintf(stderr, "ERROR: can't convert <%s> to a valid port number\n",
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[18] | 335 | optarg);
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[466] | 336 | usage(1, argv[0]);
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[18] | 337 | }
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| 338 | break;
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[467] | 339 | case 'D': /* Source caster mountpoint for stream input */
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| 340 | stream_name = optarg;
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[32] | 341 | break;
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[467] | 342 | case 'U': /* Source caster user ID for input stream access */
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| 343 | stream_user = optarg;
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[32] | 344 | break;
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[467] | 345 | case 'W': /* Source caster password for input stream access */
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| 346 | stream_password = optarg;
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| 347 | break;
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| 348 | case 'E': /* Proxy Server */
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| 349 | proxyhost = optarg;
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| 350 | break;
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| 351 | case 'F': /* Proxy port */
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| 352 | proxyport = atoi(optarg);
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| 353 | break;
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| 354 | case 'O': /* OutputMode - default: Ntrip-Version 2.0 TCP/IP */
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| 355 | if (!strcmp(optarg,"f")) outputmode = NTRIPV1;
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| 356 | else if(!strcmp(optarg,"r")) outputmode = RTSP;
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| 357 | break;
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| 358 | case 'n': /* Destination caster user ID for stream upload to mountpoint */
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| 359 | user = optarg;
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| 360 | break;
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| 361 | case 'N': /* Ntrip-STR, optional for Ntrip Version 2.0 */
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| 362 | ntrip_str = optarg;
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| 363 | break;
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| 364 | case 'h': /* print help screen */
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[18] | 365 | case '?':
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[466] | 366 | usage(0, argv[0]);
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[18] | 367 | break;
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| 368 | default:
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[466] | 369 | usage(2, argv[0]);
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[18] | 370 | break;
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[5] | 371 | }
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[18] | 372 | }
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| 373 |
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[5] | 374 | argc -= optind;
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| 375 | argv += optind;
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[18] | 376 |
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[467] | 377 | /*** argument analysis ***/
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[18] | 378 | if(argc > 0)
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| 379 | {
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| 380 | fprintf(stderr, "ERROR: Extra args on command line: ");
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| 381 | for(; argc > 0; argc--)
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[5] | 382 | {
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[18] | 383 | fprintf(stderr, " %s", *argv++);
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[5] | 384 | }
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[18] | 385 | fprintf(stderr, "\n");
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[466] | 386 | usage(1, argv[0]); /* never returns */
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[18] | 387 | }
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| 388 |
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[467] | 389 | if(*ntrip_str && (outputmode == NTRIPV1))
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[18] | 390 | {
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[467] | 391 | fprintf(stderr, "WARNING: OutputMode is Ntrip version 1.0"
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| 392 | " - Ntrip-STR will not be considered\n");
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| 393 | }
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| 394 |
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| 395 | if(!mountpoint)
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| 396 | {
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| 397 | fprintf(stderr, "ERROR: Missing mountpoint argument for stream upload\n");
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[18] | 398 | exit(1);
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| 399 | }
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[467] | 400 |
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[18] | 401 | if(!password[0])
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| 402 | {
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[467] | 403 | fprintf(stderr, "WARNING: Missing password argument for stream upload - "
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| 404 | "are you really sure?\n");
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[18] | 405 | }
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[467] | 406 | else
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| 407 | {
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| 408 | nBufferBytes += encode(authorization, sizeof(authorization), user,
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| 409 | password);
|
---|
| 410 | if(nBufferBytes > (int)sizeof(authorization))
|
---|
| 411 | {
|
---|
| 412 | fprintf(stderr, "ERROR: user ID and/or password too long: %d (%d)\n"
|
---|
| 413 | " user ID: %s \npassword: <%s>\n",
|
---|
| 414 | nBufferBytes, (int)sizeof(authorization), user, password);
|
---|
| 415 | exit(1);
|
---|
| 416 | }
|
---|
| 417 | }
|
---|
[18] | 418 |
|
---|
[47] | 419 | if(stream_name && stream_user && !stream_password)
|
---|
[32] | 420 | {
|
---|
[467] | 421 | fprintf(stderr, "WARNING: Missing password argument for stream download"
|
---|
[32] | 422 | " - are you really sure?\n");
|
---|
| 423 | }
|
---|
| 424 |
|
---|
[467] | 425 | /*** proxy server handling ***/
|
---|
| 426 | if(*proxyhost)
|
---|
| 427 | {
|
---|
| 428 | outhost = inhost = proxyhost;
|
---|
| 429 | outport = inport = proxyport;
|
---|
| 430 | i = snprintf(szSendBuffer, sizeof(szSendBuffer),"http://%s:%d",
|
---|
| 431 | casterouthost, casteroutport);
|
---|
| 432 | if((i > SZ) || (i < 0))
|
---|
| 433 | {
|
---|
| 434 | fprintf(stderr, "ERROR: Destination caster name/port to long - "
|
---|
| 435 | "length = %d (max: %d)\n", i, SZ);
|
---|
| 436 | exit(0);
|
---|
| 437 | }
|
---|
| 438 | else
|
---|
| 439 | {
|
---|
| 440 | strncpy(post_extension, szSendBuffer, (size_t)i);
|
---|
| 441 | strcpy(szSendBuffer, "");
|
---|
| 442 | i = snprintf(szSendBuffer, sizeof(szSendBuffer),":%d", casteroutport);
|
---|
| 443 | strncpy(rtsp_extension, szSendBuffer, SZ);
|
---|
| 444 | strcpy(szSendBuffer,""); i = 0;
|
---|
| 445 | }
|
---|
| 446 | i = snprintf(szSendBuffer, sizeof(szSendBuffer),"http://%s:%d", casterinhost, casterinport);
|
---|
| 447 | if((i > SZ) || (i < 0))
|
---|
| 448 | {
|
---|
| 449 | fprintf(stderr, "ERROR: Destination caster name/port to long - length = %d (max: %d)\n", i, SZ);
|
---|
| 450 | exit(0);
|
---|
| 451 | }
|
---|
| 452 | else
|
---|
| 453 | {
|
---|
| 454 | strncpy(get_extension, szSendBuffer, (size_t)i);
|
---|
| 455 | strcpy(szSendBuffer, "");
|
---|
| 456 | i = 0;
|
---|
| 457 | }
|
---|
| 458 | }
|
---|
| 459 | else
|
---|
| 460 | {
|
---|
| 461 | outhost = casterouthost; outport = casteroutport;
|
---|
| 462 | inhost = casterinhost; inport = casterinport;
|
---|
| 463 | }
|
---|
[23] | 464 |
|
---|
[467] | 465 | /*** InputMode handling ***/
|
---|
| 466 | switch(inputmode)
|
---|
[18] | 467 | {
|
---|
| 468 | case INFILE:
|
---|
[5] | 469 | {
|
---|
[45] | 470 | if((gpsfd = open(filepath, O_RDONLY)) < 0)
|
---|
[18] | 471 | {
|
---|
| 472 | perror("ERROR: opening input file");
|
---|
| 473 | exit(1);
|
---|
| 474 | }
|
---|
[467] | 475 | /* set blocking inputmode in case it was not set
|
---|
[32] | 476 | (seems to be sometimes for fifo's) */
|
---|
[18] | 477 | fcntl(gpsfd, F_SETFL, 0);
|
---|
| 478 | printf("file input: file = %s\n", filepath);
|
---|
[5] | 479 | }
|
---|
[18] | 480 | break;
|
---|
[467] | 481 | case SERIAL: /* open serial port */
|
---|
[5] | 482 | {
|
---|
[22] | 483 | gpsfd = openserial(ttyport, 1, ttybaud);
|
---|
[18] | 484 | if(gpsfd < 0)
|
---|
| 485 | {
|
---|
| 486 | exit(1);
|
---|
| 487 | }
|
---|
[22] | 488 | printf("serial input: device = %s, speed = %d\n", ttyport, ttybaud);
|
---|
[5] | 489 | }
|
---|
[18] | 490 | break;
|
---|
[32] | 491 | case TCPSOCKET: case UDPSOCKET: case SISNET: case CASTER:
|
---|
[5] | 492 | {
|
---|
[467] | 493 | if(inputmode == SISNET)
|
---|
[23] | 494 | {
|
---|
| 495 | if(!inhost) inhost = SISNET_SERVER;
|
---|
| 496 | if(!inport) inport = SISNET_PORT;
|
---|
| 497 | }
|
---|
[467] | 498 | else if(inputmode == CASTER)
|
---|
[23] | 499 | {
|
---|
[32] | 500 | if(!inport) inport = NTRIP_PORT;
|
---|
| 501 | if(!inhost) inhost = NTRIP_CASTER;
|
---|
| 502 | }
|
---|
[467] | 503 | else if((inputmode == TCPSOCKET) || (inputmode == UDPSOCKET))
|
---|
[32] | 504 | {
|
---|
[23] | 505 | if(!inport) inport = SERV_TCP_PORT;
|
---|
| 506 | if(!inhost) inhost = "127.0.0.1";
|
---|
[467] | 507 | }
|
---|
[18] | 508 |
|
---|
[23] | 509 | if(!(he = gethostbyname(inhost)))
|
---|
[5] | 510 | {
|
---|
[467] | 511 | fprintf(stderr, "ERROR: Input host <%s> unknown\n", inhost);
|
---|
[466] | 512 | usage(-2, argv[0]);
|
---|
[23] | 513 | }
|
---|
| 514 |
|
---|
[467] | 515 | if((gpsfd = socket(AF_INET, inputmode == UDPSOCKET
|
---|
[32] | 516 | ? SOCK_DGRAM : SOCK_STREAM, 0)) < 0)
|
---|
[23] | 517 | {
|
---|
[467] | 518 | fprintf(stderr,
|
---|
| 519 | "ERROR: can't create socket for incoming data stream\n");
|
---|
[18] | 520 | exit(1);
|
---|
[5] | 521 | }
|
---|
[18] | 522 |
|
---|
[467] | 523 | memset((char *) &caster, 0x00, sizeof(caster));
|
---|
[24] | 524 | if(!bindmode)
|
---|
[467] | 525 | memcpy(&caster.sin_addr, he->h_addr, (size_t)he->h_length);
|
---|
| 526 | caster.sin_family = AF_INET;
|
---|
| 527 | caster.sin_port = htons(inport);
|
---|
[23] | 528 |
|
---|
[467] | 529 | fprintf(stderr, "%s input: host = %s, port = %d, %s%s%s%s%s\n",
|
---|
| 530 | inputmode == CASTER ? "caster" : inputmode == SISNET ? "sisnet" :
|
---|
| 531 | inputmode == TCPSOCKET ? "tcp socket" : "udp socket",
|
---|
| 532 | bindmode ? "127.0.0.1" : inet_ntoa(caster.sin_addr),
|
---|
[32] | 533 | inport, stream_name ? "stream = " : "", stream_name ? stream_name : "",
|
---|
| 534 | initfile ? ", initfile = " : "", initfile ? initfile : "",
|
---|
[45] | 535 | bindmode ? "binding mode" : "");
|
---|
[18] | 536 |
|
---|
[24] | 537 | if(bindmode)
|
---|
[5] | 538 | {
|
---|
[467] | 539 | if(bind(gpsfd, (struct sockaddr *) &caster, sizeof(caster)) < 0)
|
---|
[24] | 540 | {
|
---|
| 541 | fprintf(stderr, "ERROR: can't bind input to port %d\n", inport);
|
---|
| 542 | exit(1);
|
---|
| 543 | }
|
---|
[467] | 544 | } /* connect to input-caster or proxy server*/
|
---|
| 545 | else if(connect(gpsfd, (struct sockaddr *)&caster, sizeof(caster)) < 0)
|
---|
[24] | 546 | {
|
---|
[18] | 547 | fprintf(stderr, "ERROR: can't connect input to %s at port %d\n",
|
---|
[467] | 548 | inet_ntoa(caster.sin_addr), inport);
|
---|
[18] | 549 | exit(1);
|
---|
[5] | 550 | }
|
---|
[467] | 551 |
|
---|
| 552 | if(stream_name) /* input from Ntrip Version 1.0 caster*/
|
---|
[32] | 553 | {
|
---|
| 554 | int init = 0;
|
---|
| 555 |
|
---|
| 556 | /* set socket buffer size */
|
---|
| 557 | setsockopt(gpsfd, SOL_SOCKET, SO_SNDBUF, (const char *) &size,
|
---|
| 558 | sizeof(const char *));
|
---|
| 559 | if(stream_user && stream_password)
|
---|
| 560 | {
|
---|
| 561 | /* leave some space for login */
|
---|
| 562 | nBufferBytes=snprintf(szSendBuffer, sizeof(szSendBuffer)-40,
|
---|
[467] | 563 | "GET %s/%s HTTP/1.0\r\n"
|
---|
[466] | 564 | "User-Agent: %s/%s\r\n"
|
---|
[467] | 565 | "Authorization: Basic ", get_extension, stream_name,
|
---|
| 566 | AGENTSTRING, revisionstr);
|
---|
[32] | 567 | /* second check for old glibc */
|
---|
| 568 | if(nBufferBytes > (int)sizeof(szSendBuffer)-40 || nBufferBytes < 0)
|
---|
| 569 | {
|
---|
[467] | 570 | fprintf(stderr, "ERROR: Source caster request too long\n");
|
---|
[32] | 571 | exit(1);
|
---|
| 572 | }
|
---|
| 573 | nBufferBytes += encode(szSendBuffer+nBufferBytes,
|
---|
[339] | 574 | sizeof(szSendBuffer)-nBufferBytes-4, stream_user, stream_password);
|
---|
| 575 | if(nBufferBytes > (int)sizeof(szSendBuffer)-4)
|
---|
[32] | 576 | {
|
---|
[467] | 577 | fprintf(stderr,
|
---|
| 578 | "ERROR: Source caster user ID and/or password too long\n");
|
---|
[32] | 579 | exit(1);
|
---|
| 580 | }
|
---|
[339] | 581 | szSendBuffer[nBufferBytes++] = '\r';
|
---|
| 582 | szSendBuffer[nBufferBytes++] = '\n';
|
---|
| 583 | szSendBuffer[nBufferBytes++] = '\r';
|
---|
| 584 | szSendBuffer[nBufferBytes++] = '\n';
|
---|
[32] | 585 | }
|
---|
| 586 | else
|
---|
| 587 | {
|
---|
| 588 | nBufferBytes = snprintf(szSendBuffer, sizeof(szSendBuffer),
|
---|
[467] | 589 | "GET %s/%s HTTP/1.0\r\n"
|
---|
[466] | 590 | "User-Agent: %s/%s\r\n"
|
---|
[467] | 591 | "\r\n", get_extension, stream_name, AGENTSTRING, revisionstr);
|
---|
[32] | 592 | }
|
---|
| 593 | if((send(gpsfd, szSendBuffer, (size_t)nBufferBytes, 0))
|
---|
| 594 | != nBufferBytes)
|
---|
| 595 | {
|
---|
[467] | 596 | fprintf(stderr, "ERROR: could not send Source caster request\n");
|
---|
[32] | 597 | exit(1);
|
---|
| 598 | }
|
---|
| 599 | nBufferBytes = 0;
|
---|
[467] | 600 | /* check Source caster's response */
|
---|
[32] | 601 | while(!init && nBufferBytes < (int)sizeof(szSendBuffer)
|
---|
| 602 | && (nBufferBytes += recv(gpsfd, szSendBuffer,
|
---|
| 603 | sizeof(szSendBuffer)-nBufferBytes, 0)) > 0)
|
---|
| 604 | {
|
---|
| 605 | if(strstr(szSendBuffer, "\r\n"))
|
---|
| 606 | {
|
---|
| 607 | if(!strncmp(szSendBuffer, "ICY 200 OK\r\n", 10))
|
---|
| 608 | init = 1;
|
---|
| 609 | else
|
---|
| 610 | {
|
---|
| 611 | int k;
|
---|
[467] | 612 | fprintf(stderr,
|
---|
| 613 | "ERROR: could not get requested data from Source caster: ");
|
---|
[32] | 614 | for(k = 0; k < nBufferBytes && szSendBuffer[k] != '\n'
|
---|
| 615 | && szSendBuffer[k] != '\r'; ++k)
|
---|
| 616 | {
|
---|
| 617 | fprintf(stderr, "%c", isprint(szSendBuffer[k])
|
---|
| 618 | ? szSendBuffer[k] : '.');
|
---|
| 619 | }
|
---|
| 620 | fprintf(stderr, "\n");
|
---|
| 621 | exit(1);
|
---|
| 622 | }
|
---|
| 623 | }
|
---|
| 624 | }
|
---|
| 625 | if(!init)
|
---|
| 626 | {
|
---|
[467] | 627 | fprintf(stderr, "ERROR: could not init Source caster download\n");
|
---|
[32] | 628 | exit(1);
|
---|
| 629 | }
|
---|
[467] | 630 | } /* end input from Ntrip Version 1.0 caster */
|
---|
[32] | 631 |
|
---|
[467] | 632 | if(initfile && inputmode != SISNET)
|
---|
[21] | 633 | {
|
---|
| 634 | char buffer[1024];
|
---|
| 635 | FILE *fh;
|
---|
| 636 | int i;
|
---|
| 637 |
|
---|
| 638 | if((fh = fopen(initfile, "r")))
|
---|
| 639 | {
|
---|
| 640 | while((i = fread(buffer, 1, sizeof(buffer), fh)) > 0)
|
---|
| 641 | {
|
---|
[22] | 642 | if((send(gpsfd, buffer, (size_t)i, 0)) != i)
|
---|
[21] | 643 | {
|
---|
| 644 | perror("ERROR: sending init file");
|
---|
| 645 | exit(1);
|
---|
| 646 | }
|
---|
| 647 | }
|
---|
| 648 | if(i < 0)
|
---|
| 649 | {
|
---|
| 650 | perror("ERROR: reading init file");
|
---|
| 651 | exit(1);
|
---|
| 652 | }
|
---|
| 653 | fclose(fh);
|
---|
| 654 | }
|
---|
| 655 | else
|
---|
| 656 | {
|
---|
[467] | 657 | fprintf(stderr, "ERROR: can't read init file <%s>\n", initfile);
|
---|
[21] | 658 | exit(1);
|
---|
| 659 | }
|
---|
| 660 | }
|
---|
[5] | 661 | }
|
---|
[467] | 662 | if(inputmode == SISNET)
|
---|
[23] | 663 | {
|
---|
| 664 | int i, j;
|
---|
| 665 | char buffer[1024];
|
---|
| 666 |
|
---|
[45] | 667 | i = snprintf(buffer, sizeof(buffer), sisnet >= 30 ? "AUTH,%s,%s\r\n"
|
---|
[32] | 668 | : "AUTH,%s,%s", sisnetuser, sisnetpassword);
|
---|
[23] | 669 | if((send(gpsfd, buffer, (size_t)i, 0)) != i)
|
---|
| 670 | {
|
---|
[467] | 671 | perror("ERROR: sending authentication for SISNeT data server");
|
---|
[23] | 672 | exit(1);
|
---|
| 673 | }
|
---|
[45] | 674 | i = sisnet >= 30 ? 7 : 5;
|
---|
[23] | 675 | if((j = recv(gpsfd, buffer, i, 0)) != i && strncmp("*AUTH", buffer, 5))
|
---|
| 676 | {
|
---|
| 677 | fprintf(stderr, "ERROR: SISNeT connect failed:");
|
---|
| 678 | for(i = 0; i < j; ++i)
|
---|
| 679 | {
|
---|
| 680 | if(buffer[i] != '\r' && buffer[i] != '\n')
|
---|
| 681 | {
|
---|
| 682 | fprintf(stderr, "%c", isprint(buffer[i]) ? buffer[i] : '.');
|
---|
| 683 | }
|
---|
| 684 | }
|
---|
| 685 | fprintf(stderr, "\n");
|
---|
| 686 | exit(1);
|
---|
| 687 | }
|
---|
[45] | 688 | if(sisnet >= 31)
|
---|
| 689 | {
|
---|
| 690 | if((send(gpsfd, "START\r\n", 7, 0)) != i)
|
---|
| 691 | {
|
---|
[467] | 692 | perror("ERROR: sending Sisnet start command");
|
---|
[45] | 693 | exit(1);
|
---|
| 694 | }
|
---|
| 695 | }
|
---|
[23] | 696 | }
|
---|
[467] | 697 | /*** receiver authentication ***/
|
---|
| 698 | if (recvrid && recvrpwd && ((inputmode == TCPSOCKET)
|
---|
| 699 | || (inputmode == UDPSOCKET)))
|
---|
[398] | 700 | {
|
---|
[467] | 701 | if (strlen(recvrid) > (BUFSZ-3))
|
---|
| 702 | {
|
---|
| 703 | fprintf(stderr, "ERROR: Receiver ID too long\n");
|
---|
| 704 | exit(0);
|
---|
| 705 | }
|
---|
| 706 | else
|
---|
| 707 | {
|
---|
[398] | 708 | fprintf(stderr, "Sending user ID for receiver...\n");
|
---|
[467] | 709 | nBufferBytes = read(gpsfd, szSendBuffer, BUFSZ);
|
---|
[398] | 710 | strcpy(szSendBuffer, recvrid);
|
---|
| 711 | strcat(szSendBuffer,"\r\n");
|
---|
| 712 | send(gpsfd,szSendBuffer, strlen(szSendBuffer), MSG_DONTWAIT);
|
---|
| 713 | }
|
---|
[467] | 714 |
|
---|
| 715 | if (strlen(recvrpwd) > (BUFSZ-3))
|
---|
| 716 | {
|
---|
| 717 | fprintf(stderr, "ERROR: Receiver password too long\n");
|
---|
| 718 | exit(0);
|
---|
| 719 | }
|
---|
| 720 | else
|
---|
| 721 | {
|
---|
[398] | 722 | fprintf(stderr, "Sending user password for receiver...\n");
|
---|
| 723 | nBufferBytes = read(gpsfd, szSendBuffer, BUFSZ);
|
---|
| 724 | strcpy(szSendBuffer, recvrpwd);
|
---|
| 725 | strcat(szSendBuffer,"\r\n");
|
---|
[467] | 726 | send(gpsfd, szSendBuffer, strlen(szSendBuffer), MSG_DONTWAIT);
|
---|
[398] | 727 | }
|
---|
[467] | 728 | }
|
---|
[18] | 729 | break;
|
---|
| 730 | default:
|
---|
[466] | 731 | usage(-1, argv[0]);
|
---|
[18] | 732 | break;
|
---|
| 733 | }
|
---|
| 734 |
|
---|
| 735 | /* ----- main part ----- */
|
---|
[467] | 736 | /* setup signal handler for CTRL+C */
|
---|
| 737 | setup_signal_handler(SIGINT, handle_sigint);
|
---|
| 738 |
|
---|
| 739 | while(outputmode != END)
|
---|
[18] | 740 | {
|
---|
[467] | 741 | if(signal_was_caught())
|
---|
| 742 | {
|
---|
| 743 | fprintf(stderr, "NtripLinuxServer terminates\n");
|
---|
| 744 | break;
|
---|
| 745 | }
|
---|
| 746 |
|
---|
[23] | 747 | if(!(he = gethostbyname(outhost)))
|
---|
| 748 | {
|
---|
[467] | 749 | fprintf(stderr, "ERROR: Destination caster or proxy host <%s> unknown\n",
|
---|
| 750 | outhost);
|
---|
[466] | 751 | usage(-2, argv[0]);
|
---|
[23] | 752 | }
|
---|
| 753 |
|
---|
[18] | 754 | /* create socket */
|
---|
[467] | 755 | if((socket_tcp = socket(AF_INET, SOCK_STREAM, 0)) < 0)
|
---|
[5] | 756 | {
|
---|
[467] | 757 | perror("ERROR: tcp socket");
|
---|
[18] | 758 | exit(2);
|
---|
[5] | 759 | }
|
---|
[23] | 760 |
|
---|
[467] | 761 | memset((char *) &caster, 0x00, sizeof(caster));
|
---|
| 762 | memcpy(&caster.sin_addr, he->h_addr, (size_t)he->h_length);
|
---|
| 763 | caster.sin_family = AF_INET;
|
---|
| 764 | caster.sin_port = htons(outport);
|
---|
[23] | 765 |
|
---|
[467] | 766 | /* connect to Destination caster or Proxy server*/
|
---|
[18] | 767 | fprintf(stderr, "caster output: host = %s, port = %d, mountpoint = %s\n",
|
---|
[467] | 768 | inet_ntoa(caster.sin_addr), outport, mountpoint);
|
---|
| 769 |
|
---|
| 770 | if(connect(socket_tcp, (struct sockaddr *) &caster, sizeof(caster)) < 0)
|
---|
[18] | 771 | {
|
---|
| 772 | fprintf(stderr, "ERROR: can't connect output to %s at port %d\n",
|
---|
[467] | 773 | inet_ntoa(caster.sin_addr), outport);
|
---|
| 774 | if(close(socket_tcp)==-1) perror("ERROR: close tcp socket");
|
---|
[18] | 775 | exit(3);
|
---|
| 776 | }
|
---|
| 777 |
|
---|
[467] | 778 | /*** OutputMode handling ***/
|
---|
| 779 | switch(outputmode){
|
---|
| 780 | case NTRIPV1: /*** OutputMode Ntrip Version 1.0 ***/
|
---|
| 781 | nBufferBytes = snprintf(szSendBuffer, sizeof(szSendBuffer),
|
---|
| 782 | "SOURCE %s %s/%s\r\n"
|
---|
| 783 | "Source-Agent: %s\r\n\r\n",
|
---|
| 784 | password, post_extension, mountpoint, AGENTSTRING);
|
---|
| 785 | if((nBufferBytes > (int)sizeof(szSendBuffer)) || (nBufferBytes < 0))
|
---|
| 786 | {
|
---|
| 787 | fprintf(stderr, "ERROR: Destination caster request to long\n");
|
---|
| 788 | outputmode = END;
|
---|
| 789 | break;
|
---|
| 790 | }
|
---|
| 791 | if(!send_to_caster(szSendBuffer, socket_tcp, nBufferBytes))
|
---|
| 792 | {
|
---|
| 793 | outputmode = END;
|
---|
| 794 | break;
|
---|
| 795 | }
|
---|
| 796 | /* check Destination caster's response */
|
---|
| 797 | nBufferBytes = recv(socket_tcp, szSendBuffer, sizeof(szSendBuffer), 0);
|
---|
| 798 | szSendBuffer[nBufferBytes] = '\0';
|
---|
| 799 | if(!strstr(szSendBuffer, "OK"))
|
---|
| 800 | {
|
---|
| 801 | char *a;
|
---|
| 802 | fprintf(stderr,
|
---|
| 803 | "ERROR: Destination caster's or Proxy's reply is not OK: ");
|
---|
| 804 | for(a = szSendBuffer; *a && *a != '\n' && *a != '\r'; ++a)
|
---|
| 805 | {
|
---|
| 806 | fprintf(stderr, "%.1s", isprint(*a) ? a : ".");
|
---|
| 807 | }
|
---|
| 808 | fprintf(stderr, "\n");
|
---|
| 809 | outputmode = END;
|
---|
| 810 | break;
|
---|
| 811 | }
|
---|
| 812 | else
|
---|
| 813 | {
|
---|
| 814 | fprintf(stderr,
|
---|
| 815 | "Destination caster response:\n%s\nconnection successfull\n",
|
---|
| 816 | szSendBuffer);
|
---|
| 817 | }
|
---|
| 818 | send_receive_loop(socket_tcp, gpsfd, outputmode, NULL, 0);
|
---|
| 819 | break;
|
---|
| 820 | case HTTP: /*** Ntrip-Version 2.0 HTTP/1.1 ***/
|
---|
| 821 | nBufferBytes = snprintf(szSendBuffer, sizeof(szSendBuffer),
|
---|
| 822 | "POST %s/%s HTTP/1.1\r\n"
|
---|
| 823 | "Host: %s\r\n"
|
---|
| 824 | "Ntrip-Version: Ntrip/2.0\r\n"
|
---|
| 825 | "User-Agent: NTRIP %s\r\n"
|
---|
| 826 | "Authorization: Basic %s\r\n"
|
---|
| 827 | "Ntrip-STR: %s\r\n"
|
---|
| 828 | "Transfer-Encoding: chunked\r\n\r\n",
|
---|
| 829 | post_extension, mountpoint, casterouthost, AGENTSTRING,
|
---|
| 830 | authorization, ntrip_str);
|
---|
| 831 | if((nBufferBytes > (int)sizeof(szSendBuffer)) || (nBufferBytes < 0))
|
---|
| 832 | {
|
---|
| 833 | fprintf(stderr, "ERROR: Destination caster request to long\n");
|
---|
| 834 | outputmode = END;
|
---|
| 835 | break;
|
---|
| 836 | }
|
---|
| 837 | if (!send_to_caster(szSendBuffer, socket_tcp, nBufferBytes))
|
---|
| 838 | {
|
---|
| 839 | outputmode = END;
|
---|
| 840 | break;
|
---|
| 841 | }
|
---|
| 842 | /* check Destination caster's response */
|
---|
| 843 | nBufferBytes = recv(socket_tcp, szSendBuffer, sizeof(szSendBuffer), 0);
|
---|
| 844 | szSendBuffer[nBufferBytes] = '\0';
|
---|
| 845 | if(!strstr(szSendBuffer, "HTTP/1.1 200 OK"))
|
---|
| 846 | {
|
---|
| 847 | char *a;
|
---|
| 848 | fprintf(stderr,
|
---|
| 849 | "ERROR: Destination caster's or Proxy's reply is not OK: ");
|
---|
| 850 | for(a = szSendBuffer; *a && *a != '\n' && *a != '\r'; ++a)
|
---|
| 851 | {
|
---|
| 852 | fprintf(stderr, "%.1s", isprint(*a) ? a : ".");
|
---|
| 853 | }
|
---|
| 854 | fprintf(stderr, "\n");
|
---|
| 855 | /* fallback if necessary */
|
---|
| 856 | if(!strstr(szSendBuffer,"Ntrip-Version: Ntrip/2.0\r\n"))
|
---|
| 857 | {
|
---|
| 858 | fprintf(stderr,
|
---|
| 859 | " - Ntrip Version 2.0 not implemented at Destination caster"
|
---|
| 860 | " <%s> or Proxy <%s> or\n"
|
---|
| 861 | " - HTTP/1.1 not implemented at Proxy or\n"
|
---|
| 862 | " - RTSP/1.0 not implemented at Destination caster or Proxy\n\n"
|
---|
| 863 | "caster fallback: Fallback to Ntrip Version 1.0\n\n",
|
---|
| 864 | casterouthost, proxyhost);
|
---|
| 865 | outputmode = NTRIPV1;
|
---|
| 866 | break;
|
---|
| 867 | }
|
---|
| 868 | outputmode = END;
|
---|
| 869 | break;
|
---|
| 870 | }
|
---|
| 871 | else
|
---|
| 872 | {
|
---|
| 873 | fprintf(stderr, "Destination caster response:\n%s\n"
|
---|
| 874 | "connection successfull\n",szSendBuffer);
|
---|
| 875 | }
|
---|
| 876 | send_receive_loop(socket_tcp, gpsfd, outputmode, NULL, 0);
|
---|
| 877 | break;
|
---|
| 878 | case RTSP: /*** Ntrip-Version 2.0 RTSP / RTP ***/
|
---|
| 879 | if((socket_udp = socket(AF_INET, SOCK_DGRAM,0)) < 0)
|
---|
| 880 | {
|
---|
| 881 | perror("ERROR: udp socket");
|
---|
| 882 | exit(4);
|
---|
| 883 | }
|
---|
| 884 | /* fill structure with local address information for UDP */
|
---|
| 885 | memset(&local, 0, sizeof(local));
|
---|
| 886 | local.sin_family = AF_INET;
|
---|
| 887 | local.sin_port = htons(0);
|
---|
| 888 | local.sin_addr.s_addr = htonl(INADDR_ANY);
|
---|
| 889 | len = (socklen_t)sizeof(local);
|
---|
| 890 | /* bind() in order to get a random RTP client_port */
|
---|
| 891 | if((bind(socket_udp,(struct sockaddr *)&local, len)) < 0)
|
---|
| 892 | {
|
---|
| 893 | perror("ERROR: udp bind");
|
---|
| 894 | if(close(socket_udp)==-1) perror("ERROR: close udp socket");
|
---|
| 895 | if(close(socket_tcp)==-1) perror("ERROR: close tcp socket");
|
---|
| 896 | exit(4);
|
---|
| 897 | }
|
---|
| 898 | if((getsockname(socket_udp, (struct sockaddr*)&local, &len)) != -1)
|
---|
| 899 | {
|
---|
| 900 | client_port = (unsigned int)ntohs(local.sin_port);
|
---|
| 901 | }else{
|
---|
| 902 | perror("ERROR: getsockname(localhost)");
|
---|
| 903 | if(close(socket_udp)==-1) perror("ERROR: close udp socket");
|
---|
| 904 | if(close(socket_tcp)==-1) perror("ERROR: close tcp socket");
|
---|
| 905 | exit(4);
|
---|
| 906 | }
|
---|
| 907 | nBufferBytes = snprintf(szSendBuffer, sizeof(szSendBuffer),
|
---|
| 908 | "SETUP rtsp://%s%s/%s RTSP/1.0\r\n"
|
---|
| 909 | "CSeq: 1\r\n"
|
---|
| 910 | "Ntrip-Version: Ntrip/2.0\r\n"
|
---|
| 911 | "Ntrip-Component: Ntripserver\r\n"
|
---|
| 912 | "User-Agent: NTRIP %s \r\n"
|
---|
| 913 | "Transport: RTP/GNSS;unicast;client_port=%u\r\n"
|
---|
| 914 | "Authorization: Basic %s\r\n"
|
---|
| 915 | "Ntrip-STR: %s\r\n\r\n",
|
---|
| 916 | casterouthost, rtsp_extension, mountpoint, AGENTSTRING, client_port,
|
---|
| 917 | authorization, ntrip_str);
|
---|
| 918 | if((nBufferBytes > (int)sizeof(szSendBuffer)) || (nBufferBytes < 0))
|
---|
| 919 | {
|
---|
| 920 | fprintf(stderr, "ERROR: Destination caster request to long\n");
|
---|
| 921 | outputmode = END;
|
---|
| 922 | break;
|
---|
| 923 | }
|
---|
| 924 | if (!send_to_caster(szSendBuffer, socket_tcp, nBufferBytes))
|
---|
| 925 | {
|
---|
| 926 | outputmode = END;
|
---|
| 927 | break;
|
---|
| 928 | }
|
---|
| 929 | while((nBufferBytes = recv(socket_tcp, szSendBuffer,
|
---|
| 930 | sizeof(szSendBuffer), 0)) > 0)
|
---|
| 931 | {
|
---|
| 932 | /* check Destination caster's response */
|
---|
| 933 | szSendBuffer[nBufferBytes] = '\0';
|
---|
| 934 | if(!strstr(szSendBuffer, "RTSP/1.0 200 OK"))
|
---|
| 935 | {
|
---|
| 936 | char *a;
|
---|
| 937 | fprintf(stderr,
|
---|
| 938 | "ERROR: Destination caster's or Proxy's reply is not OK: ");
|
---|
| 939 | for(a = szSendBuffer; *a && *a != '\n' && *a != '\r'; ++a)
|
---|
| 940 | {
|
---|
| 941 | fprintf(stderr, "%c", isprint(*a) ? *a : '.');
|
---|
| 942 | }
|
---|
| 943 | fprintf(stderr, "\n");
|
---|
| 944 | /* fallback if necessary */
|
---|
| 945 | if(strncmp(szSendBuffer, "RTSP",4) != 0)
|
---|
| 946 | {
|
---|
| 947 | if(strstr(szSendBuffer,"Ntrip-Version: Ntrip/2.0\r\n"))
|
---|
| 948 | {
|
---|
| 949 | fprintf(stderr,
|
---|
| 950 | " - RTSP not implemented at Destination caster <%s> or"
|
---|
| 951 | " Proxy <%s>\n\n"
|
---|
| 952 | "caster fallback: Fallback to Ntrip Version 2.0 in TCP/IP"
|
---|
| 953 | " mode\n\n", casterouthost, proxyhost);
|
---|
| 954 | outputmode = HTTP;
|
---|
| 955 | break;
|
---|
| 956 | }
|
---|
| 957 | else
|
---|
| 958 | {
|
---|
| 959 | fprintf(stderr,
|
---|
| 960 | " - Ntrip-Version 2.0 not implemented at Destination caster"
|
---|
| 961 | "<%s> or Proxy <%s> or\n"
|
---|
| 962 | " - HTTP/1.1 not implemented at Proxy or\n"
|
---|
| 963 | " - RTSP/1.0 not implemented at Destination caster or Proxy\n\n"
|
---|
| 964 | "caster fallback: Fallback to Ntrip Version 1.0\n\n",
|
---|
| 965 | casterouthost, proxyhost);
|
---|
| 966 | outputmode = NTRIPV1;
|
---|
| 967 | break;
|
---|
| 968 | }
|
---|
| 969 | }
|
---|
| 970 | else
|
---|
| 971 | {
|
---|
| 972 | outputmode = END;
|
---|
| 973 | break;
|
---|
| 974 | }
|
---|
| 975 | }
|
---|
| 976 | else
|
---|
| 977 | {
|
---|
| 978 | fprintf(stderr, "Destination caster response:\n%s\n",szSendBuffer);
|
---|
| 979 | }
|
---|
| 980 | if((strstr(szSendBuffer,"RTSP/1.0 200 OK\r\n"))
|
---|
| 981 | && (strstr(szSendBuffer,"CSeq: 1\r\n")))
|
---|
| 982 | {
|
---|
| 983 | for(token = strtok(szSendBuffer, dlim); token != NULL;
|
---|
| 984 | token = strtok(NULL, dlim))
|
---|
| 985 | {
|
---|
| 986 | tok_buf[i] = token; i++;
|
---|
| 987 | }
|
---|
| 988 | session = atoi(tok_buf[6]);
|
---|
| 989 | server_port = atoi(tok_buf[10]);
|
---|
| 990 | nBufferBytes = snprintf(szSendBuffer, sizeof(szSendBuffer),
|
---|
| 991 | "POST rtsp://%s%s/%s RTSP/1.0\r\n"
|
---|
| 992 | "CSeq: 2\r\n"
|
---|
| 993 | "Session: %d\r\n"
|
---|
| 994 | "\r\n",
|
---|
| 995 | casterouthost, rtsp_extension, mountpoint, session);
|
---|
| 996 | if((nBufferBytes >= (int)sizeof(szSendBuffer))
|
---|
| 997 | || (nBufferBytes < 0))
|
---|
| 998 | {
|
---|
| 999 | fprintf(stderr, "ERROR: Destination caster request to long\n");
|
---|
| 1000 | outputmode = END;
|
---|
| 1001 | break;
|
---|
| 1002 | }
|
---|
| 1003 | if(!send_to_caster(szSendBuffer, socket_tcp, nBufferBytes))
|
---|
| 1004 | {
|
---|
| 1005 | outputmode = END;
|
---|
| 1006 | break;
|
---|
| 1007 | }
|
---|
| 1008 | }else if((strstr(szSendBuffer,"RTSP/1.0 200 OK\r\n")) && (strstr(szSendBuffer,"CSeq: 2\r\n"))) {
|
---|
| 1009 | /* fill structure with caster address information for UDP */
|
---|
| 1010 | memset(&casterRTP, 0, sizeof(casterRTP));
|
---|
| 1011 | casterRTP.sin_family = AF_INET;
|
---|
| 1012 | casterRTP.sin_port = htons(((uint16_t)server_port));
|
---|
| 1013 | if((he = gethostbyname(outhost))== NULL) {
|
---|
| 1014 | fprintf(stderr, "ERROR: Destination caster unknown\n");
|
---|
| 1015 | if(close(socket_udp)==-1) perror("ERROR: close udp socket");
|
---|
| 1016 | if(close(socket_tcp)==-1) perror("ERROR: close tcp socket");
|
---|
| 1017 | exit(4);
|
---|
| 1018 | }else{
|
---|
| 1019 | memcpy((char *)&casterRTP.sin_addr.s_addr,
|
---|
| 1020 | he->h_addr_list[0], (size_t)he->h_length);
|
---|
| 1021 | }
|
---|
| 1022 | cseq = 2;
|
---|
| 1023 | len = (socklen_t)sizeof(casterRTP);
|
---|
| 1024 | send_receive_loop(socket_udp, gpsfd, outputmode, (struct sockaddr *)&casterRTP, (socklen_t)len);
|
---|
| 1025 | break;
|
---|
| 1026 | }else{break;}
|
---|
| 1027 | }
|
---|
| 1028 | break;
|
---|
[18] | 1029 | }
|
---|
| 1030 | }
|
---|
[467] | 1031 | close_session(socket_udp, socket_tcp, casterouthost, mountpoint, cseq, session, rtsp_extension, gpsfd);
|
---|
[50] | 1032 | return 0;
|
---|
[5] | 1033 | }
|
---|
| 1034 |
|
---|
[467] | 1035 | static void send_receive_loop(int sock, int fd, int outmode, struct sockaddr* pcasterRTP,
|
---|
| 1036 | socklen_t length)
|
---|
[5] | 1037 | {
|
---|
[51] | 1038 | int nodata = 0;
|
---|
[18] | 1039 | char buffer[BUFSZ] = { 0 };
|
---|
[23] | 1040 | char sisnetbackbuffer[200];
|
---|
[467] | 1041 | char szSendBuffer[BUFSZ] = "";
|
---|
[30] | 1042 | int nBufferBytes = 0;
|
---|
[467] | 1043 |
|
---|
| 1044 | /* RTSP / RTP Mode */
|
---|
| 1045 | int isfirstpacket = 1;
|
---|
| 1046 | struct timeval now;
|
---|
| 1047 | struct timeval last = {0,0};
|
---|
| 1048 | long int sendtimediff;
|
---|
| 1049 | int rtpseq = 0;
|
---|
| 1050 | int rtpssrc = 0;
|
---|
| 1051 | int rtptime = 0;
|
---|
| 1052 |
|
---|
[18] | 1053 | /* data transmission */
|
---|
[467] | 1054 | fprintf(stderr,"transfering data ...\n");
|
---|
| 1055 |
|
---|
[5] | 1056 | while(1)
|
---|
[18] | 1057 | {
|
---|
[467] | 1058 | /* signal handling*/
|
---|
| 1059 | if(signal_was_caught())
|
---|
| 1060 | {
|
---|
| 1061 | fprintf(stderr, "NtripLinuxServer exits send-receive mode\n");
|
---|
| 1062 | break;
|
---|
| 1063 | }
|
---|
[51] | 1064 | if(!nodata) alarm(ALARMTIME);
|
---|
| 1065 | else nodata = 0;
|
---|
[23] | 1066 |
|
---|
[18] | 1067 | if(!nBufferBytes)
|
---|
[5] | 1068 | {
|
---|
[467] | 1069 | if(inputmode == SISNET && sisnet <= 30)
|
---|
[23] | 1070 | {
|
---|
| 1071 | int i;
|
---|
| 1072 | /* a somewhat higher rate than 1 second to get really each block */
|
---|
| 1073 | /* means we need to skip double blocks sometimes */
|
---|
| 1074 | struct timeval tv = {0,700000};
|
---|
| 1075 | select(0, 0, 0, 0, &tv);
|
---|
| 1076 | memcpy(sisnetbackbuffer, buffer, sizeof(sisnetbackbuffer));
|
---|
[45] | 1077 | i = (sisnet >= 30 ? 5 : 3);
|
---|
[23] | 1078 | if((send(gpsfd, "MSG\r\n", i, 0)) != i)
|
---|
| 1079 | {
|
---|
[467] | 1080 | perror("ERROR: sending SISNeT data request");
|
---|
[23] | 1081 | exit(1);
|
---|
| 1082 | }
|
---|
| 1083 | }
|
---|
[467] | 1084 | /*** receiving data ****/
|
---|
[32] | 1085 | nBufferBytes = read(fd, buffer, sizeof(buffer));
|
---|
[18] | 1086 | if(!nBufferBytes)
|
---|
| 1087 | {
|
---|
| 1088 | printf("WARNING: no data received from input\n");
|
---|
[398] | 1089 | sleep(3);
|
---|
[51] | 1090 | nodata = 1;
|
---|
[18] | 1091 | continue;
|
---|
| 1092 | }
|
---|
| 1093 | else if(nBufferBytes < 0)
|
---|
| 1094 | {
|
---|
| 1095 | perror("ERROR: reading input failed");
|
---|
| 1096 | exit(1);
|
---|
| 1097 | }
|
---|
[32] | 1098 | /* we can compare the whole buffer, as the additional bytes
|
---|
| 1099 | remain unchanged */
|
---|
[467] | 1100 | if(inputmode == SISNET && sisnet <= 30 &&
|
---|
[46] | 1101 | !memcmp(sisnetbackbuffer, buffer, sizeof(sisnetbackbuffer)))
|
---|
[23] | 1102 | {
|
---|
| 1103 | nBufferBytes = 0;
|
---|
| 1104 | }
|
---|
[5] | 1105 | }
|
---|
[467] | 1106 | /** send data ***/
|
---|
| 1107 | if((nBufferBytes) && (outmode == NTRIPV1)) /*** Ntrip-Version 1.0 ***/
|
---|
[18] | 1108 | {
|
---|
[30] | 1109 | int i;
|
---|
[23] | 1110 | if((i = send(sock, buffer, (size_t)nBufferBytes, MSG_DONTWAIT))
|
---|
[467] | 1111 | != nBufferBytes)
|
---|
[18] | 1112 | {
|
---|
[34] | 1113 | if(i < 0)
|
---|
[23] | 1114 | {
|
---|
[34] | 1115 | if(errno != EAGAIN)
|
---|
| 1116 | {
|
---|
[467] | 1117 | perror("WARNING: could not send data to Destination caster"
|
---|
| 1118 | " - retry connection");
|
---|
[34] | 1119 | close(sock);
|
---|
| 1120 | sleep(5);
|
---|
| 1121 | return;
|
---|
| 1122 | }
|
---|
[23] | 1123 | }
|
---|
| 1124 | else if(i)
|
---|
| 1125 | {
|
---|
| 1126 | memmove(buffer, buffer+i, (size_t)(nBufferBytes-i));
|
---|
| 1127 | nBufferBytes -= i;
|
---|
| 1128 | }
|
---|
[467] | 1129 | }else
|
---|
| 1130 | {
|
---|
| 1131 | nBufferBytes = 0;
|
---|
[18] | 1132 | }
|
---|
[467] | 1133 | }
|
---|
| 1134 | /*** Ntrip-Version 2.0 HTTP/1.1 ***/
|
---|
| 1135 | else if((nBufferBytes) && (outmode == HTTP))
|
---|
| 1136 | {
|
---|
| 1137 | int i, nChunkBytes, j = 1;
|
---|
| 1138 | nChunkBytes = snprintf(szSendBuffer, sizeof(szSendBuffer),"%x\r\n",
|
---|
| 1139 | nBufferBytes);
|
---|
| 1140 | send(sock, szSendBuffer, nChunkBytes, MSG_DONTWAIT);
|
---|
| 1141 | if((i = send(sock, buffer, (size_t)nBufferBytes, MSG_DONTWAIT))
|
---|
| 1142 | != nBufferBytes)
|
---|
| 1143 | {
|
---|
| 1144 | if(i < 0)
|
---|
| 1145 | {
|
---|
| 1146 | if(errno != EAGAIN)
|
---|
| 1147 | {
|
---|
| 1148 | perror("WARNING: could not send data to Destination caster"
|
---|
| 1149 | " - retry connection");
|
---|
| 1150 | close(sock);
|
---|
| 1151 | sleep(5);
|
---|
| 1152 | return;
|
---|
| 1153 | }
|
---|
| 1154 | }
|
---|
| 1155 | else if(i)
|
---|
| 1156 | {
|
---|
| 1157 | while(j>0)
|
---|
| 1158 | {
|
---|
| 1159 | j = send(sock, buffer, (size_t)BUFSZ, MSG_DONTWAIT);
|
---|
| 1160 | }
|
---|
| 1161 | }
|
---|
| 1162 | }
|
---|
[23] | 1163 | else
|
---|
[18] | 1164 | {
|
---|
[467] | 1165 | send(sock, "\r\n", strlen("\r\n"), MSG_DONTWAIT);
|
---|
[23] | 1166 | nBufferBytes = 0;
|
---|
[18] | 1167 | }
|
---|
| 1168 | }
|
---|
[467] | 1169 | /*** Ntrip-Version 2.0 RTSP(TCP) / RTP(UDP) ***/
|
---|
| 1170 | else if((nBufferBytes) && (outmode == RTSP))
|
---|
| 1171 | {
|
---|
| 1172 | char rtpbuffer[BUFSZ+12];
|
---|
| 1173 | int i, j;
|
---|
| 1174 | /* Signal Handling */
|
---|
| 1175 | if(signal_was_caught())
|
---|
| 1176 | {
|
---|
| 1177 | fprintf(stderr, "NtripLinuxServer exits send-receive mode \n");
|
---|
| 1178 | break;
|
---|
| 1179 | }
|
---|
| 1180 | gettimeofday(&now, NULL);
|
---|
| 1181 | /* RTP data packet generation*/
|
---|
| 1182 | if(isfirstpacket){
|
---|
| 1183 | rtpseq = rand();
|
---|
| 1184 | rtptime = rand();
|
---|
| 1185 | rtpssrc = rand();
|
---|
| 1186 | last = now;
|
---|
| 1187 | isfirstpacket = 0;
|
---|
| 1188 | }
|
---|
| 1189 | else
|
---|
| 1190 | {
|
---|
| 1191 | ++rtpseq;
|
---|
| 1192 | sendtimediff = (((now.tv_sec - last.tv_sec)*1000000)
|
---|
| 1193 | + (now.tv_usec - last.tv_usec));
|
---|
| 1194 | rtptime += sendtimediff/TIME_RESOLUTION;
|
---|
| 1195 | }
|
---|
| 1196 | rtpbuffer[0] = (RTP_VERSION<<6);
|
---|
| 1197 | /* padding, extension, csrc are empty */
|
---|
| 1198 | rtpbuffer[1] = 96;
|
---|
| 1199 | /* marker is empty */
|
---|
| 1200 | rtpbuffer[2] = rtpseq>>8;
|
---|
| 1201 | rtpbuffer[3] = rtpseq;
|
---|
| 1202 | rtpbuffer[4] = rtptime>>24;
|
---|
| 1203 | rtpbuffer[5] = rtptime>>16;
|
---|
| 1204 | rtpbuffer[6] = rtptime>>8;
|
---|
| 1205 | rtpbuffer[7] = rtptime;
|
---|
| 1206 | rtpbuffer[8] = rtpssrc>>24;
|
---|
| 1207 | rtpbuffer[9] = rtpssrc>>16;
|
---|
| 1208 | rtpbuffer[10] = rtpssrc>>8;
|
---|
| 1209 | rtpbuffer[11] = rtpssrc;
|
---|
| 1210 | for(j=0; j<nBufferBytes; j++) {rtpbuffer[12+j] = buffer[j];}
|
---|
| 1211 | last.tv_sec = now.tv_sec;
|
---|
| 1212 | last.tv_usec = now.tv_usec;
|
---|
| 1213 |
|
---|
| 1214 | if ((i = sendto(sock, rtpbuffer, 12 + nBufferBytes, 0, pcasterRTP,
|
---|
| 1215 | length)) != (nBufferBytes + 12))
|
---|
| 1216 | {
|
---|
| 1217 | if(i < 0)
|
---|
| 1218 | {
|
---|
| 1219 | if(errno != EAGAIN)
|
---|
| 1220 | {
|
---|
| 1221 | perror("WARNING: could not send data to Destination caster - retry connection");
|
---|
| 1222 | close(sock);
|
---|
| 1223 | sleep(5);
|
---|
| 1224 | return;
|
---|
| 1225 | }
|
---|
| 1226 | }
|
---|
| 1227 | else if(i)
|
---|
| 1228 | {
|
---|
| 1229 | memmove(buffer, buffer+(i-12), (size_t)(nBufferBytes-(i-12)));
|
---|
| 1230 | nBufferBytes -= i-12;
|
---|
| 1231 | }
|
---|
| 1232 | }
|
---|
| 1233 | else
|
---|
| 1234 | {
|
---|
| 1235 | nBufferBytes = 0;
|
---|
| 1236 | }
|
---|
| 1237 | }
|
---|
[18] | 1238 | }
|
---|
[467] | 1239 | return;
|
---|
[5] | 1240 | }
|
---|
| 1241 |
|
---|
[467] | 1242 |
|
---|
| 1243 | /********************************************************************
|
---|
[5] | 1244 | * openserial
|
---|
| 1245 | *
|
---|
| 1246 | * Open the serial port with the given device name and configure it for
|
---|
| 1247 | * reading NMEA data from a GPS receiver.
|
---|
| 1248 | *
|
---|
| 1249 | * Parameters:
|
---|
| 1250 | * tty : pointer to : A zero-terminated string containing the device
|
---|
| 1251 | * unsigned char name of the appropriate serial port.
|
---|
| 1252 | * blocksz : integer : Block size for port I/O
|
---|
[22] | 1253 | * baud : integer : Baud rate for port I/O
|
---|
[5] | 1254 | *
|
---|
| 1255 | * Return Value:
|
---|
| 1256 | * The function returns a file descriptor for the opened port if successful.
|
---|
| 1257 | * The function returns -1 in the event of an error.
|
---|
| 1258 | *
|
---|
| 1259 | * Remarks:
|
---|
| 1260 | *
|
---|
[467] | 1261 | ********************************************************************/
|
---|
[5] | 1262 |
|
---|
[22] | 1263 | static int openserial(const char * tty, int blocksz, int baud)
|
---|
[5] | 1264 | {
|
---|
[18] | 1265 | int fd;
|
---|
| 1266 | struct termios termios;
|
---|
| 1267 |
|
---|
| 1268 | fd = open(tty, O_RDWR | O_NONBLOCK | O_EXLOCK);
|
---|
| 1269 | if(fd < 0)
|
---|
| 1270 | {
|
---|
| 1271 | perror("ERROR: opening serial connection");
|
---|
[5] | 1272 | return (-1);
|
---|
| 1273 | }
|
---|
[18] | 1274 | if(tcgetattr(fd, &termios) < 0)
|
---|
| 1275 | {
|
---|
| 1276 | perror("ERROR: get serial attributes");
|
---|
[5] | 1277 | return (-1);
|
---|
| 1278 | }
|
---|
| 1279 | termios.c_iflag = 0;
|
---|
[18] | 1280 | termios.c_oflag = 0; /* (ONLRET) */
|
---|
[5] | 1281 | termios.c_cflag = CS8 | CLOCAL | CREAD;
|
---|
| 1282 | termios.c_lflag = 0;
|
---|
| 1283 | {
|
---|
[18] | 1284 | int cnt;
|
---|
| 1285 | for(cnt = 0; cnt < NCCS; cnt++)
|
---|
[5] | 1286 | termios.c_cc[cnt] = -1;
|
---|
| 1287 | }
|
---|
| 1288 | termios.c_cc[VMIN] = blocksz;
|
---|
| 1289 | termios.c_cc[VTIME] = 2;
|
---|
[18] | 1290 |
|
---|
[5] | 1291 | #if (B4800 != 4800)
|
---|
[467] | 1292 | /* Not every system has speed settings equal to absolute speed value. */
|
---|
[18] | 1293 |
|
---|
[22] | 1294 | switch (baud)
|
---|
[18] | 1295 | {
|
---|
| 1296 | case 300:
|
---|
[22] | 1297 | baud = B300;
|
---|
[18] | 1298 | break;
|
---|
| 1299 | case 1200:
|
---|
[22] | 1300 | baud = B1200;
|
---|
[18] | 1301 | break;
|
---|
| 1302 | case 2400:
|
---|
[22] | 1303 | baud = B2400;
|
---|
[18] | 1304 | break;
|
---|
| 1305 | case 4800:
|
---|
[22] | 1306 | baud = B4800;
|
---|
[18] | 1307 | break;
|
---|
| 1308 | case 9600:
|
---|
[22] | 1309 | baud = B9600;
|
---|
[18] | 1310 | break;
|
---|
| 1311 | case 19200:
|
---|
[22] | 1312 | baud = B19200;
|
---|
[18] | 1313 | break;
|
---|
| 1314 | case 38400:
|
---|
[22] | 1315 | baud = B38400;
|
---|
[18] | 1316 | break;
|
---|
[11] | 1317 | #ifdef B57600
|
---|
[18] | 1318 | case 57600:
|
---|
[22] | 1319 | baud = B57600;
|
---|
[18] | 1320 | break;
|
---|
[11] | 1321 | #endif
|
---|
| 1322 | #ifdef B115200
|
---|
[18] | 1323 | case 115200:
|
---|
[22] | 1324 | baud = B115200;
|
---|
[18] | 1325 | break;
|
---|
[11] | 1326 | #endif
|
---|
| 1327 | #ifdef B230400
|
---|
[18] | 1328 | case 230400:
|
---|
[22] | 1329 | baud = B230400;
|
---|
[18] | 1330 | break;
|
---|
[11] | 1331 | #endif
|
---|
[18] | 1332 | default:
|
---|
| 1333 | fprintf(stderr, "WARNING: Baud settings not useful, using 19200\n");
|
---|
[22] | 1334 | baud = B19200;
|
---|
[18] | 1335 | break;
|
---|
| 1336 | }
|
---|
[5] | 1337 | #endif
|
---|
[18] | 1338 |
|
---|
[22] | 1339 | if(cfsetispeed(&termios, baud) != 0)
|
---|
[18] | 1340 | {
|
---|
| 1341 | perror("ERROR: setting serial speed with cfsetispeed");
|
---|
| 1342 | return (-1);
|
---|
| 1343 | }
|
---|
[22] | 1344 | if(cfsetospeed(&termios, baud) != 0)
|
---|
[18] | 1345 | {
|
---|
| 1346 | perror("ERROR: setting serial speed with cfsetospeed");
|
---|
| 1347 | return (-1);
|
---|
| 1348 | }
|
---|
| 1349 | if(tcsetattr(fd, TCSANOW, &termios) < 0)
|
---|
| 1350 | {
|
---|
| 1351 | perror("ERROR: setting serial attributes");
|
---|
| 1352 | return (-1);
|
---|
| 1353 | }
|
---|
| 1354 | if(fcntl(fd, F_SETFL, 0) == -1)
|
---|
| 1355 | {
|
---|
[467] | 1356 | perror("WARNING: setting blocking inputmode failed");
|
---|
[18] | 1357 | }
|
---|
[5] | 1358 | return (fd);
|
---|
[467] | 1359 | } /* openserial */
|
---|
[5] | 1360 |
|
---|
[467] | 1361 | /********************************************************************
|
---|
| 1362 | * usage
|
---|
| 1363 | *
|
---|
| 1364 | * Send a usage message to standard error and quit the program.
|
---|
| 1365 | *
|
---|
| 1366 | * Parameters:
|
---|
| 1367 | * None.
|
---|
| 1368 | *
|
---|
| 1369 | * Return Value:
|
---|
| 1370 | * The function does not return a value.
|
---|
| 1371 | *
|
---|
| 1372 | * Remarks:
|
---|
| 1373 | *
|
---|
| 1374 | *********************************************************************/
|
---|
[30] | 1375 | static
|
---|
| 1376 | #ifdef __GNUC__
|
---|
| 1377 | __attribute__ ((noreturn))
|
---|
| 1378 | #endif /* __GNUC__ */
|
---|
[466] | 1379 | void usage(int rc, char *name)
|
---|
[5] | 1380 | {
|
---|
[467] | 1381 | fprintf(stderr, "Version %s (%s) GPL" COMPILEDATE "\nUsage:\n%s [OPTIONS]\n",
|
---|
[466] | 1382 | revisionstr, datestr, name);
|
---|
[467] | 1383 | fprintf(stderr, "PURPOSE\n");
|
---|
| 1384 | fprintf(stderr, " The purpose of this program is to pick up a GNSS data stream (Input, Source)\n");
|
---|
| 1385 | fprintf(stderr, " from either\n\n");
|
---|
| 1386 | fprintf(stderr, " 1. a Serial port, or\n");
|
---|
| 1387 | fprintf(stderr, " 2. an IP server, or\n");
|
---|
| 1388 | fprintf(stderr, " 3. a File, or\n");
|
---|
| 1389 | fprintf(stderr, " 4. a SISNeT Data Server, or\n");
|
---|
| 1390 | fprintf(stderr, " 5. a UDP server, or\n");
|
---|
| 1391 | fprintf(stderr, " 6. an NTRIP Version 1.0 Caster\n\n");
|
---|
| 1392 | fprintf(stderr, " and forward that incoming stream (Output, Destination) to either\n\n");
|
---|
| 1393 | fprintf(stderr, " - an NTRIP Version 1.0 Caster, or\n");
|
---|
| 1394 | fprintf(stderr, " - an NTRIP Version 2.0 Caster via TCP/IP or RTSP/RTP.\n\n\n");
|
---|
| 1395 | fprintf(stderr, "OPTIONS\n");
|
---|
| 1396 | fprintf(stderr, " -h|? print this help screen\n\n");
|
---|
| 1397 | fprintf(stderr, " -E <ProxyHost> Proxy server host name or address, required i.e. when\n");
|
---|
| 1398 | fprintf(stderr, " running the program in a proxy server protected LAN,\n");
|
---|
| 1399 | fprintf(stderr, " optional\n");
|
---|
| 1400 | fprintf(stderr, " -F <ProxyPort> Proxy server IP port, required i.e. when running\n");
|
---|
| 1401 | fprintf(stderr, " the program in a proxy server protected LAN, optional\n\n");
|
---|
| 1402 | fprintf(stderr, " -M <InputMode> Sets the input mode (1 = Serial Port, 2 = IP server,\n");
|
---|
| 1403 | fprintf(stderr, " 3 = File, 4 = SISNeT Data Server, 5 = UDP server, 6 = NTRIP Caster),\n");
|
---|
| 1404 | fprintf(stderr, " mandatory\n\n");
|
---|
| 1405 | fprintf(stderr, " <InputMode> = 1 (Serial Port):\n");
|
---|
| 1406 | fprintf(stderr, " -i <Device> Serial input device, default: /dev/gps, mandatory if\n");
|
---|
| 1407 | fprintf(stderr, " <InputMode>=1\n");
|
---|
| 1408 | fprintf(stderr, " -b <BaudRate> Serial input baud rate, default: 19200 bps, mandatory\n");
|
---|
| 1409 | fprintf(stderr, " if <InputMode>=1\n\n");
|
---|
| 1410 | fprintf(stderr, " <InputMode> = 2|5 (IP port | UDP port):\n");
|
---|
| 1411 | fprintf(stderr, " -H <ServerHost> Input host name or address, default: 127.0.0.1,\n");
|
---|
| 1412 | fprintf(stderr, " mandatory if <InputMode> = 2|5\n");
|
---|
| 1413 | fprintf(stderr, " -P <ServerPort> Input port, default: 1025, mandatory if <InputMode>= 2|5\n");
|
---|
| 1414 | fprintf(stderr, " -f <ServerFile> Name of initialization file to be send to server,\n");
|
---|
| 1415 | fprintf(stderr, " optional\n");
|
---|
| 1416 | fprintf(stderr, " -x <ServerUser> User ID to access incoming stream, optional\n");
|
---|
| 1417 | fprintf(stderr, " -y <ServerPass> Password, to access incoming stream, optional\n");
|
---|
| 1418 | fprintf(stderr, " -B Bind to incoming UDP stream, optional for <InputMode> = 5\n\n");
|
---|
| 1419 | fprintf(stderr, " <InputMode> = 3 (File):\n");
|
---|
| 1420 | fprintf(stderr, " -s <File> File name to simulate stream by reading data from (log)\n");
|
---|
| 1421 | fprintf(stderr, " file, default is /dev/stdin, mandatory for <InputMode> = 3\n\n");
|
---|
| 1422 | fprintf(stderr, " <InputMode> = 4 (SISNeT Data Server):\n");
|
---|
| 1423 | fprintf(stderr, " -H <SisnetHost> SISNeT Data Server name or address,\n");
|
---|
| 1424 | fprintf(stderr, " default: 131.176.49.142, mandatory if <InputMode> = 4\n");
|
---|
| 1425 | fprintf(stderr, " -P <SisnetPort> SISNeT Data Server port, default: 7777, mandatory if\n");
|
---|
| 1426 | fprintf(stderr, " <InputMode> = 4\n");
|
---|
| 1427 | fprintf(stderr, " -u <SisnetUser> SISNeT Data Server user ID, mandatory if <InputMode> = 4\n");
|
---|
| 1428 | fprintf(stderr, " -l <SisnetPass> SISNeT Data Server password, mandatory if <InputMode> = 4\n");
|
---|
| 1429 | fprintf(stderr, " -V <SisnetVers> SISNeT Data Server Version number, options are 2.1, 3.0\n");
|
---|
| 1430 | fprintf(stderr, " or 3.1, default: 3.1, mandatory if <InputMode> = 4\n\n");
|
---|
| 1431 | fprintf(stderr, " <InputMode> = 6 (NTRIP Version 1.0 Caster):\n");
|
---|
| 1432 | fprintf(stderr, " -H <SourceHost> Source caster name or address, default: 127.0.0.1,\n");
|
---|
| 1433 | fprintf(stderr, " mandatory if <InputMode> = 6\n");
|
---|
| 1434 | fprintf(stderr, " -P <SourcePort> Source caster port, default: 2101, mandatory if\n");
|
---|
| 1435 | fprintf(stderr, " <InputMode> = 6\n");
|
---|
| 1436 | fprintf(stderr, " -D <SourceMount> Source caster mountpoint for stream input, mandatory if\n");
|
---|
| 1437 | fprintf(stderr, " <InputMode> = 6\n");
|
---|
| 1438 | fprintf(stderr, " -U <SourceUser> Source caster user Id for input stream access, mandatory\n");
|
---|
| 1439 | fprintf(stderr, " for protected streams if <InputMode> = 6\n");
|
---|
| 1440 | fprintf(stderr, " -W <SourcePass> Source caster password for input stream access, mandatory\n");
|
---|
| 1441 | fprintf(stderr, " for protected streams if <InputMode> = 6\n\n");
|
---|
| 1442 | fprintf(stderr, " -O <OutputMode> Sets the output mode for communatation with the destination\n");
|
---|
| 1443 | fprintf(stderr, " caster (r = NTRIP Version 2.0 Caster in RTSP/RTP mode, t = Ntrip Version 2.0\n");
|
---|
| 1444 | fprintf(stderr, " Caster in TCP/IP mode, f = NTRIP Version 1.0 Caster)\n\n");
|
---|
| 1445 | fprintf(stderr, " Defaults to NTRIP1.0, but wil change to 2.0 in future versions\n");
|
---|
| 1446 | fprintf(stderr, " Note that the program automatically falls back from mode r to mode t and\n");
|
---|
| 1447 | fprintf(stderr, " further to mode f if necessary.\n\n");
|
---|
| 1448 | fprintf(stderr, " -a <DestHost> Destination caster name or address, default: 127.0.0.1,\n");
|
---|
| 1449 | fprintf(stderr, " mandatory\n");
|
---|
| 1450 | fprintf(stderr, " -p <DestPort> Destination caster port, default: 2101, mandatory\n");
|
---|
| 1451 | fprintf(stderr, " -m <DestMount> Destination caster mountpoint for stream upload,\n");
|
---|
| 1452 | fprintf(stderr, " mandatory\n");
|
---|
| 1453 | fprintf(stderr, " -n <DestUser> Destination caster user ID for stream upload to\n");
|
---|
| 1454 | fprintf(stderr, " mountpoint, only for NTRIP Version 2.0 destination\n");
|
---|
| 1455 | fprintf(stderr, " casters, mandatory\n");
|
---|
| 1456 | fprintf(stderr, " -c <DestPass> Destination caster password for stream upload to\n");
|
---|
| 1457 | fprintf(stderr, " mountpoint, mandatory\n");
|
---|
| 1458 | fprintf(stderr, " -N <STR-record> Sourcetable STR-record\n");
|
---|
| 1459 | fprintf(stderr, " optional for Ntrip Version 2.0 in RTSP/RTP and TCP/IP mode\n\n");
|
---|
[18] | 1460 | exit(rc);
|
---|
[467] | 1461 | } /* usage */
|
---|
[32] | 1462 |
|
---|
[467] | 1463 |
|
---|
| 1464 | /********************************************************************/
|
---|
| 1465 | /* signal handling */
|
---|
| 1466 | /********************************************************************/
|
---|
| 1467 | #ifdef __GNUC__
|
---|
| 1468 | static void handle_sigint(int sig __attribute__((__unused__)))
|
---|
| 1469 | #else /* __GNUC__ */
|
---|
| 1470 | static void handle_sigint(int sig)
|
---|
| 1471 | #endif /* __GNUC__ */
|
---|
| 1472 | {sigint_received = 1;}
|
---|
| 1473 |
|
---|
| 1474 | static void setup_signal_handler(int sig, void (*handler)(int))
|
---|
| 1475 | {
|
---|
| 1476 | #if _POSIX_VERSION > 198800L
|
---|
| 1477 | struct sigaction action;
|
---|
| 1478 |
|
---|
| 1479 | action.sa_handler = handler;
|
---|
| 1480 | sigemptyset(&(action.sa_mask));
|
---|
| 1481 | sigaddset(&(action.sa_mask), sig);
|
---|
| 1482 | action.sa_flags = 0;
|
---|
| 1483 | sigaction(sig, &action, 0);
|
---|
| 1484 | #else
|
---|
| 1485 | signal(sig, handler);
|
---|
| 1486 | #endif
|
---|
| 1487 | return;
|
---|
| 1488 | } /* setupsignal_handler */
|
---|
| 1489 |
|
---|
| 1490 | static int signal_was_caught(void)
|
---|
| 1491 | {
|
---|
| 1492 | fflush(stdout);
|
---|
| 1493 | if(sigint_received)
|
---|
| 1494 | fprintf(stderr, "\nSIGINT received: ");
|
---|
| 1495 |
|
---|
| 1496 | return (sigint_received);
|
---|
| 1497 | } /* signal_was_caught */
|
---|
| 1498 |
|
---|
| 1499 | /********************************************************************
|
---|
| 1500 | * base64-encoding *
|
---|
| 1501 | *******************************************************************/
|
---|
| 1502 | static const char encodingTable [64] =
|
---|
| 1503 | {
|
---|
[32] | 1504 | 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
|
---|
| 1505 | 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
|
---|
| 1506 | 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
|
---|
| 1507 | 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'
|
---|
| 1508 | };
|
---|
| 1509 |
|
---|
| 1510 | /* does not buffer overrun, but breaks directly after an error */
|
---|
| 1511 | /* returns the number of required bytes */
|
---|
| 1512 | static int encode(char *buf, int size, const char *user, const char *pwd)
|
---|
| 1513 | {
|
---|
| 1514 | unsigned char inbuf[3];
|
---|
| 1515 | char *out = buf;
|
---|
| 1516 | int i, sep = 0, fill = 0, bytes = 0;
|
---|
| 1517 |
|
---|
| 1518 | while(*user || *pwd)
|
---|
| 1519 | {
|
---|
| 1520 | i = 0;
|
---|
| 1521 | while(i < 3 && *user) inbuf[i++] = *(user++);
|
---|
| 1522 | if(i < 3 && !sep) {inbuf[i++] = ':'; ++sep; }
|
---|
| 1523 | while(i < 3 && *pwd) inbuf[i++] = *(pwd++);
|
---|
| 1524 | while(i < 3) {inbuf[i++] = 0; ++fill; }
|
---|
| 1525 | if(out-buf < size-1)
|
---|
| 1526 | *(out++) = encodingTable[(inbuf [0] & 0xFC) >> 2];
|
---|
| 1527 | if(out-buf < size-1)
|
---|
| 1528 | *(out++) = encodingTable[((inbuf [0] & 0x03) << 4)
|
---|
| 1529 | | ((inbuf [1] & 0xF0) >> 4)];
|
---|
| 1530 | if(out-buf < size-1)
|
---|
| 1531 | {
|
---|
| 1532 | if(fill == 2)
|
---|
| 1533 | *(out++) = '=';
|
---|
| 1534 | else
|
---|
| 1535 | *(out++) = encodingTable[((inbuf [1] & 0x0F) << 2)
|
---|
| 1536 | | ((inbuf [2] & 0xC0) >> 6)];
|
---|
| 1537 | }
|
---|
| 1538 | if(out-buf < size-1)
|
---|
| 1539 | {
|
---|
| 1540 | if(fill >= 1)
|
---|
| 1541 | *(out++) = '=';
|
---|
| 1542 | else
|
---|
| 1543 | *(out++) = encodingTable[inbuf [2] & 0x3F];
|
---|
| 1544 | }
|
---|
| 1545 | bytes += 4;
|
---|
| 1546 | }
|
---|
| 1547 | if(out-buf < size)
|
---|
| 1548 | *out = 0;
|
---|
| 1549 | return bytes;
|
---|
[467] | 1550 | }/* base64 Encoding */
|
---|
| 1551 |
|
---|
| 1552 |
|
---|
| 1553 | /********************************************************************
|
---|
| 1554 | * send message to caster *
|
---|
| 1555 | *********************************************************************/
|
---|
| 1556 | static int send_to_caster(char *input, int socket, int input_size)
|
---|
| 1557 | {
|
---|
| 1558 | int send_error = 1;
|
---|
| 1559 |
|
---|
| 1560 | if((send(socket, input, (size_t)input_size, 0)) != input_size)
|
---|
| 1561 | {
|
---|
| 1562 | fprintf(stderr, "ERROR: could not send full header to Destination caster\n");
|
---|
| 1563 | send_error = 0;
|
---|
| 1564 | }else{
|
---|
| 1565 | fprintf(stderr, "\nDestination caster request:\n");
|
---|
| 1566 | fprintf(stderr, "%s", input);
|
---|
| 1567 | }
|
---|
| 1568 | return send_error;
|
---|
| 1569 | }/* send_to_caster */
|
---|
| 1570 |
|
---|
| 1571 |
|
---|
| 1572 | /********************************************************************
|
---|
| 1573 | * close session *
|
---|
| 1574 | *********************************************************************/
|
---|
| 1575 | static void close_session(int sock_udp, int sock_tcp,
|
---|
| 1576 | const char *caster_addr, const char *mountpoint, int cseq,
|
---|
| 1577 | int session, char *rtsp_ext, int in_fd)
|
---|
| 1578 | {
|
---|
| 1579 | int size_send_buf;
|
---|
| 1580 | char send_buf[BUFSZ];
|
---|
| 1581 |
|
---|
| 1582 | if(in_fd)
|
---|
| 1583 | {
|
---|
| 1584 | if(close(in_fd)==-1)
|
---|
| 1585 | {
|
---|
| 1586 | perror("ERROR: close input device ");
|
---|
| 1587 | exit(0);
|
---|
| 1588 | }
|
---|
| 1589 | else
|
---|
| 1590 | {
|
---|
| 1591 | fprintf(stderr, "\nclose input device: successful\n");
|
---|
| 1592 | }
|
---|
| 1593 | }
|
---|
| 1594 |
|
---|
| 1595 | if(sock_udp != 0)
|
---|
| 1596 | {
|
---|
| 1597 | if(cseq == 2)
|
---|
| 1598 | {
|
---|
| 1599 | size_send_buf = snprintf(send_buf, sizeof(send_buf),
|
---|
| 1600 | "TEARDOWN rtsp://%s%s/%s RTSP/1.0\r\n"
|
---|
| 1601 | "CSeq: 2\r\n"
|
---|
| 1602 | "Session: %d\r\n"
|
---|
| 1603 | "\r\n",
|
---|
| 1604 | caster_addr, rtsp_ext, mountpoint, session);
|
---|
| 1605 | if((size_send_buf >= (int)sizeof(send_buf)) || (size_send_buf < 0))
|
---|
| 1606 | {
|
---|
| 1607 | fprintf(stderr, "ERROR: Destination caster request to long\n");
|
---|
| 1608 | exit(0);
|
---|
| 1609 | }
|
---|
| 1610 | send_to_caster(send_buf, sock_tcp, size_send_buf); strcpy(send_buf,"");
|
---|
| 1611 | size_send_buf = recv(sock_tcp, send_buf, sizeof(send_buf), 0);
|
---|
| 1612 | send_buf[size_send_buf] = '\0';
|
---|
| 1613 | fprintf(stderr, "Destination caster response:\n%s", send_buf);
|
---|
| 1614 | }
|
---|
| 1615 | if(close(sock_udp)==-1)
|
---|
| 1616 | {
|
---|
| 1617 | perror("ERROR: close udp socket");
|
---|
| 1618 | exit(0);
|
---|
| 1619 | }
|
---|
| 1620 | else
|
---|
| 1621 | {
|
---|
| 1622 | fprintf(stderr, "close udp socket: successful\n");
|
---|
| 1623 | }
|
---|
| 1624 | }
|
---|
| 1625 |
|
---|
| 1626 | if(close(sock_tcp)==-1)
|
---|
| 1627 | {
|
---|
| 1628 | perror("ERROR: close tcp socket");
|
---|
| 1629 | exit(0);
|
---|
| 1630 | }
|
---|
| 1631 | else
|
---|
| 1632 | {
|
---|
| 1633 | fprintf(stderr, "close tcp socket: successful\n\n");
|
---|
| 1634 | }
|
---|
| 1635 | } /* close_session */
|
---|