[5] | 1 | /*
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[18] | 2 | * NtripServerLinux.c
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[5] | 3 | *
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[14] | 4 | * Copyright (c) 2003...2005
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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 | * NTRIP is currently an experimental technology.
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| 13 | * The BKG disclaims any liability nor responsibility to any person or
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| 14 | * entity with respect to any loss or damage caused, or alleged to be
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| 15 | * caused, directly or indirectly by the use and application of the NTRIP
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| 16 | * technology.
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| 17 | *
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| 18 | * For latest information and updates, access:
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| 19 | * http://igs.ifag.de/index_ntrip.htm
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| 20 | *
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| 21 | * Georg Weber
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| 22 | * BKG, Frankfurt, Germany, June 2003-06-13
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| 23 | * E-mail: euref-ip@bkg.bund.de
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| 24 | *
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| 25 | * Based on the GNU General Public License published nmead
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| 26 | *
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| 27 | * This program is free software; you can redistribute it and/or
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| 28 | * modify it under the terms of the GNU General Public License
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| 29 | * as published by the Free Software Foundation; either version 2
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| 30 | * of the License, or (at your option) any later version.
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| 31 | *
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| 32 | * This program is distributed in the hope that it will be useful,
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| 33 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 34 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 35 | * GNU General Public License for more details.
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| 36 | *
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| 37 | * You should have received a copy of the GNU General Public License
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| 38 | * along with this program; if not, write to the Free Software
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| 39 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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| 40 | * USA.
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| 41 | */
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| 42 |
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[51] | 43 | /* $Id: NtripLinuxServer.c,v 1.22 2006/08/03 15:36:57 stoecker Exp $
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[18] | 44 | * Changes - Version 0.7
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| 45 | * Sep 22 2003 Steffen Tschirpke <St.Tschirpke@actina.de>
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[5] | 46 | * - socket support
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| 47 | * - command line option handling
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| 48 | * - error handling
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| 49 | * - help screen
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[18] | 50 | *
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| 51 | * Changes - Version 0.9
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| 52 | * Feb 15 2005 Dirk Stoecker <soft@dstoecker.de>
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| 53 | * - some minor updates, fixed serial baudrate settings
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| 54 | *
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| 55 | * Changes - Version 0.10
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| 56 | * Apr 05 2005 Dirk Stoecker <soft@dstoecker.de>
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| 57 | * - some cleanup and miscellaneous fixes
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| 58 | * - replaced non-working simulate with file input (stdin)
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| 59 | * - TCP sending now somewhat more stable
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| 60 | * - cleanup of error handling
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[24] | 61 | * - Modes may be symbolic and not only numeric
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[23] | 62 | *
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| 63 | * Changes - Version 0.11
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| 64 | * Jun 02 2005 Dirk Stoecker <soft@dstoecker.de>
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| 65 | * - added SISNeT support
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| 66 | * - added UDP support
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| 67 | * - cleanup of host and port handling
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| 68 | * - added inactivity alarm of 60 seconds
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[24] | 69 | *
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| 70 | * Changes - Version 0.12
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| 71 | * Jun 07 2005 Dirk Stoecker <soft@dstoecker.de>
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| 72 | * - added UDP bindmode
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[32] | 73 | *
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| 74 | * Changes - Version 0.13
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| 75 | * Apr 25 2006 Andrea Stuerze <andrea.stuerze@bkg.bund.de>
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| 76 | * - added stream retrieval from caster
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| 77 | *
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| 78 | * Changes - Version 0.14
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[45] | 79 | * May 16 2006 Andrea Stuerze <andrea.stuerze@bkg.bund.de>
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| 80 | * - bug fix in base64_encode-function
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| 81 | *
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| 82 | * Changes - Version 0.15
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| 83 | * Jun 02 2006 Georg Weber <georg.weber@bkg.bund.de>
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| 84 | * - modification for SISNeT 3.1 protocol
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| 85 | *
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| 86 | * Changes - Version 0.16
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| 87 | * Jul 06 2006 Andrea Stuerze <andrea.stuerze@bkg.bund.de>
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| 88 | * - more flexible caster's response
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| 89 | *
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| 90 | * Changes - Version 0.17
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| 91 | * Jul 27 2006 Dirk Stoecker <soft@dstoecker.de>
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[32] | 92 | * - fixed some problems with caster download
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[45] | 93 | * - some minor cosmetic changes
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[32] | 94 | *
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[5] | 95 | */
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| 96 |
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[18] | 97 | #include <ctype.h>
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| 98 | #include <errno.h>
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| 99 | #include <fcntl.h>
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| 100 | #include <getopt.h>
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| 101 | #include <netdb.h>
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[23] | 102 | #include <signal.h>
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[5] | 103 | #include <stdio.h>
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[18] | 104 | #include <stdlib.h>
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[5] | 105 | #include <string.h>
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| 106 | #include <unistd.h>
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[18] | 107 | #include <arpa/inet.h>
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| 108 | #include <netinet/in.h>
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[5] | 109 | #include <sys/socket.h>
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| 110 | #include <sys/termios.h>
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[18] | 111 | #include <sys/types.h>
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[5] | 112 |
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[18] | 113 | #ifndef MSG_DONTWAIT
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| 114 | #define MSG_DONTWAIT 0 /* prevent compiler errors */
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| 115 | #endif
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| 116 | #ifndef O_EXLOCK
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| 117 | #define O_EXLOCK 0 /* prevent compiler errors */
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| 118 | #endif
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[5] | 119 |
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[32] | 120 | enum MODE { SERIAL = 1, TCPSOCKET = 2, INFILE = 3, SISNET = 4, UDPSOCKET = 5,
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[49] | 121 | CASTER = 6, LAST};
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[5] | 122 |
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[45] | 123 | #define VERSION "NTRIP NtripServerLinux/0.17"
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[18] | 124 | #define BUFSZ 1024
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| 125 |
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[5] | 126 | /* default socket source */
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[18] | 127 | #define SERV_HOST_ADDR "127.0.0.1"
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| 128 | #define SERV_TCP_PORT 1025
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[5] | 129 |
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| 130 | /* default destination */
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[18] | 131 | #define NTRIP_CASTER "www.euref-ip.net"
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| 132 | #define NTRIP_PORT 80
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[5] | 133 |
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[23] | 134 | /* default sisnet source */
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| 135 | #define SISNET_SERVER "131.176.49.142"
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| 136 | #define SISNET_PORT 7777
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| 137 |
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| 138 | #define ALARMTIME 60
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| 139 |
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[22] | 140 | static int ttybaud = 19200;
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| 141 | static const char *ttyport = "/dev/gps";
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| 142 | static const char *filepath = "/dev/stdin";
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| 143 | static enum MODE mode = INFILE;
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[45] | 144 | static int sisnet = 31;
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[23] | 145 | static int gpsfd = -1;
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[5] | 146 |
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| 147 | /* Forward references */
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[22] | 148 | static int openserial(const char * tty, int blocksz, int baud);
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[45] | 149 | static void send_receive_loop(int sock, int fd);
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[22] | 150 | static void usage(int);
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[32] | 151 | static int encode(char *buf, int size, const char *user, const char *pwd);
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[5] | 152 |
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[30] | 153 | #ifdef __GNUC__
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| 154 | static __attribute__ ((noreturn)) void sighandler_alarm(
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| 155 | int sig __attribute__((__unused__)))
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| 156 | #else /* __GNUC__ */
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| 157 | static void sighandler_alarm(int sig)
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| 158 | #endif /* __GNUC__ */
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[23] | 159 | {
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| 160 | fprintf(stderr, "ERROR: more than %d seconds no activity\n", ALARMTIME);
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| 161 | exit(1);
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| 162 | }
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| 163 |
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[5] | 164 | /*
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| 165 | * main
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| 166 | *
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| 167 | * Main entry point for the program. Processes command-line arguments and
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| 168 | * prepares for action.
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| 169 | *
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| 170 | * Parameters:
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| 171 | * argc : integer : Number of command-line arguments.
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[32] | 172 | * argv : array of char : Command-line arguments as an array of
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| 173 | * zero-terminated pointers to strings.
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[5] | 174 | *
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| 175 | * Return Value:
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| 176 | * The function does not return a value (although its return type is int).
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| 177 | *
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| 178 | * Remarks:
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| 179 | *
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| 180 | */
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| 181 |
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[18] | 182 | int main(int argc, char **argv)
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[5] | 183 | {
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[23] | 184 | int c;
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[18] | 185 | int size = 2048; /* for setting send buffer size */
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| 186 |
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[23] | 187 | const char *inhost = 0;
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| 188 | const char *outhost = 0;
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| 189 | unsigned int outport = 0;
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| 190 | unsigned int inport = 0;
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[22] | 191 | const char *mountpoint = NULL;
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| 192 | const char *password = "";
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[23] | 193 | const char *sisnetpassword = "";
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| 194 | const char *sisnetuser = "";
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[32] | 195 |
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| 196 | const char *stream_name=0;
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| 197 | const char *stream_user=0;
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| 198 | const char *stream_password=0;
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| 199 |
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[22] | 200 | const char *initfile = NULL;
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[24] | 201 | int bindmode = 0;
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[18] | 202 | int sock_id;
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| 203 | char szSendBuffer[BUFSZ];
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| 204 | int nBufferBytes;
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[23] | 205 | struct hostent *he;
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| 206 | struct sockaddr_in addr;
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[5] | 207 |
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[23] | 208 | signal(SIGALRM,sighandler_alarm);
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| 209 | alarm(ALARMTIME);
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[18] | 210 | /* get and check program arguments */
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| 211 | if(argc <= 1)
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| 212 | {
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| 213 | usage(2);
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| 214 | exit(1);
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| 215 | }
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[32] | 216 | while((c = getopt(argc, argv, "M:i:h:b:p:s:a:m:c:H:P:f:l:u:V:D:U:W:B"))
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| 217 | != EOF)
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[18] | 218 | {
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| 219 | switch (c)
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[5] | 220 | {
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[18] | 221 | case 'M':
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[49] | 222 | if(!strcmp(optarg, "serial")) mode = SERIAL;
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| 223 | else if(!strcmp(optarg, "tcpsocket")) mode = TCPSOCKET;
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| 224 | else if(!strcmp(optarg, "file")) mode = INFILE;
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| 225 | else if(!strcmp(optarg, "sisnet")) mode = SISNET;
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| 226 | else if(!strcmp(optarg, "udpsocket")) mode = UDPSOCKET;
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| 227 | else if(!strcmp(optarg, "caster")) mode = CASTER;
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[21] | 228 | else mode = atoi(optarg);
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[49] | 229 | if((mode == 0) || (mode >= LAST))
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[18] | 230 | {
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| 231 | fprintf(stderr, "ERROR: can't convert %s to a valid mode\n", optarg);
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| 232 | usage(-1);
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| 233 | }
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| 234 | break;
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[22] | 235 | case 'i': /* gps serial ttyport */
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| 236 | ttyport = optarg;
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[18] | 237 | break;
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[24] | 238 | case 'B':
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| 239 | bindmode = 1;
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| 240 | break;
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[23] | 241 | case 'V':
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[45] | 242 | if(!strcmp("3.0", optarg)) sisnet = 30;
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| 243 | else if(!strcmp("3.1", optarg)) sisnet = 31;
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[48] | 244 | else if(!strcmp("2.1", optarg)) sisnet = 21;
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[45] | 245 | else
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[23] | 246 | {
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| 247 | fprintf(stderr, "ERROR: unknown SISNeT version %s\n", optarg);
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| 248 | usage(-2);
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| 249 | }
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[45] | 250 | break;
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[18] | 251 | case 'b': /* serial ttyin speed */
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| 252 | ttybaud = atoi(optarg);
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| 253 | if(ttybaud <= 1)
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| 254 | {
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[32] | 255 | fprintf(stderr, "ERROR: can't convert %s to valid serial speed\n",
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| 256 | optarg);
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[18] | 257 | usage(1);
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| 258 | }
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| 259 | break;
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| 260 | case 'a': /* http server IP address A.B.C.D */
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[23] | 261 | outhost = optarg;
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[18] | 262 | break;
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| 263 | case 'p': /* http server port */
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[23] | 264 | outport = atoi(optarg);
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| 265 | if(outport <= 1 || outport > 65535)
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[18] | 266 | {
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[32] | 267 | fprintf(stderr,
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| 268 | "ERROR: can't convert %s to a valid HTTP server port\n", optarg);
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[18] | 269 | usage(1);
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| 270 | }
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| 271 | break;
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| 272 | case 'm': /* http server mountpoint */
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| 273 | mountpoint = optarg;
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| 274 | break;
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[21] | 275 | case 's': /* datastream from file */
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[18] | 276 | filepath = optarg;
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| 277 | break;
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[21] | 278 | case 'f':
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| 279 | initfile = optarg;
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| 280 | break;
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[23] | 281 | case 'u':
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| 282 | sisnetuser = optarg;
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| 283 | break;
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| 284 | case 'l':
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| 285 | sisnetpassword = optarg;
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| 286 | break;
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[18] | 287 | case 'c': /* password */
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| 288 | password = optarg;
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| 289 | break;
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| 290 | case 'H': /* host */
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[23] | 291 | inhost = optarg;
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[18] | 292 | break;
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| 293 | case 'P': /* port */
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[23] | 294 | inport = atoi(optarg);
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| 295 | if(inport <= 1 || inport > 65535)
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[18] | 296 | {
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[23] | 297 | fprintf(stderr, "ERROR: can't convert %s to a valid port number\n",
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[18] | 298 | optarg);
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| 299 | usage(1);
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| 300 | }
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| 301 | break;
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[32] | 302 | case 'D':
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| 303 | stream_name=optarg; /* desired stream from SourceCaster */
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| 304 | break;
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| 305 | case 'U':
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| 306 | stream_user=optarg; /* username for desired stream */
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| 307 | break;
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| 308 | case 'W':
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| 309 | stream_password=optarg; /* passwd for desired stream */
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| 310 | break;
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[18] | 311 | case 'h': /* help */
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| 312 | case '?':
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| 313 | usage(0);
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| 314 | break;
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| 315 | default:
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[5] | 316 | usage(2);
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[18] | 317 | break;
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[5] | 318 | }
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[18] | 319 | }
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| 320 |
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[5] | 321 | argc -= optind;
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| 322 | argv += optind;
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[18] | 323 |
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| 324 | if(argc > 0)
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| 325 | {
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| 326 | fprintf(stderr, "ERROR: Extra args on command line: ");
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| 327 | for(; argc > 0; argc--)
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[5] | 328 | {
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[18] | 329 | fprintf(stderr, " %s", *argv++);
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[5] | 330 | }
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[18] | 331 | fprintf(stderr, "\n");
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| 332 | usage(1); /* never returns */
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| 333 | }
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| 334 |
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| 335 | if(mountpoint == NULL)
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| 336 | {
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| 337 | fprintf(stderr, "ERROR: Missing mountpoint argument\n");
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| 338 | exit(1);
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| 339 | }
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| 340 | if(!password[0])
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| 341 | {
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[32] | 342 | fprintf(stderr,
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| 343 | "WARNING: Missing password argument - are you really sure?\n");
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[18] | 344 | }
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| 345 |
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[47] | 346 | if(stream_name && stream_user && !stream_password)
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[32] | 347 | {
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| 348 | fprintf(stderr, "WARNING: Missing password argument for download"
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| 349 | " - are you really sure?\n");
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| 350 | }
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| 351 |
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[23] | 352 | if(!outhost) outhost = NTRIP_CASTER;
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| 353 | if(!outport) outport = NTRIP_PORT;
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| 354 |
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| 355 | switch(mode)
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[18] | 356 | {
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| 357 | case INFILE:
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[5] | 358 | {
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[45] | 359 | if((gpsfd = open(filepath, O_RDONLY)) < 0)
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[18] | 360 | {
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| 361 | perror("ERROR: opening input file");
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| 362 | exit(1);
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| 363 | }
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[32] | 364 | /* set blocking mode in case it was not set
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| 365 | (seems to be sometimes for fifo's) */
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[18] | 366 | fcntl(gpsfd, F_SETFL, 0);
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| 367 | printf("file input: file = %s\n", filepath);
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[5] | 368 | }
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[18] | 369 | break;
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| 370 | case SERIAL: /* open serial port */
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[5] | 371 | {
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[22] | 372 | gpsfd = openserial(ttyport, 1, ttybaud);
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[18] | 373 | if(gpsfd < 0)
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| 374 | {
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| 375 | exit(1);
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| 376 | }
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[22] | 377 | printf("serial input: device = %s, speed = %d\n", ttyport, ttybaud);
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[5] | 378 | }
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[18] | 379 | break;
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[32] | 380 | case TCPSOCKET: case UDPSOCKET: case SISNET: case CASTER:
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[5] | 381 | {
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[23] | 382 | if(mode == SISNET)
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| 383 | {
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| 384 | if(!inhost) inhost = SISNET_SERVER;
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| 385 | if(!inport) inport = SISNET_PORT;
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| 386 | }
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[32] | 387 | else if(mode == CASTER)
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[23] | 388 | {
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[32] | 389 | if(!inport) inport = NTRIP_PORT;
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| 390 | if(!inhost) inhost = NTRIP_CASTER;
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| 391 | }
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| 392 | else if((mode == TCPSOCKET) || (mode == UDPSOCKET))
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| 393 | {
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[23] | 394 | if(!inport) inport = SERV_TCP_PORT;
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| 395 | if(!inhost) inhost = "127.0.0.1";
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[32] | 396 | }
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[18] | 397 |
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[23] | 398 | if(!(he = gethostbyname(inhost)))
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[5] | 399 | {
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[23] | 400 | fprintf(stderr, "ERROR: host %s unknown\n", inhost);
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| 401 | usage(-2);
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| 402 | }
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| 403 |
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[32] | 404 | if((gpsfd = socket(AF_INET, mode == UDPSOCKET
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| 405 | ? SOCK_DGRAM : SOCK_STREAM, 0)) < 0)
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[23] | 406 | {
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[18] | 407 | fprintf(stderr, "ERROR: can't create socket\n");
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| 408 | exit(1);
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[5] | 409 | }
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[18] | 410 |
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[23] | 411 | memset((char *) &addr, 0x00, sizeof(addr));
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[24] | 412 | if(!bindmode)
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| 413 | memcpy(&addr.sin_addr, he->h_addr, (size_t)he->h_length);
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[23] | 414 | addr.sin_family = AF_INET;
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| 415 | addr.sin_port = htons(inport);
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| 416 |
|
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[32] | 417 | printf("%s input: host = %s, port = %d, %s%s%s%s%s\n",
|
---|
| 418 | mode == CASTER ? "caster" : mode == SISNET ? "sisnet" :
|
---|
| 419 | mode == TCPSOCKET ? "tcp socket" : "udp socket",
|
---|
| 420 | bindmode ? "127.0.0.1" : inet_ntoa(addr.sin_addr),
|
---|
| 421 | inport, stream_name ? "stream = " : "", stream_name ? stream_name : "",
|
---|
| 422 | initfile ? ", initfile = " : "", initfile ? initfile : "",
|
---|
[45] | 423 | bindmode ? "binding mode" : "");
|
---|
[18] | 424 |
|
---|
[24] | 425 | if(bindmode)
|
---|
[5] | 426 | {
|
---|
[24] | 427 | if(bind(gpsfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
|
---|
| 428 | {
|
---|
| 429 | fprintf(stderr, "ERROR: can't bind input to port %d\n", inport);
|
---|
| 430 | exit(1);
|
---|
| 431 | }
|
---|
| 432 | }
|
---|
| 433 | else if(connect(gpsfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
|
---|
| 434 | {
|
---|
[18] | 435 | fprintf(stderr, "ERROR: can't connect input to %s at port %d\n",
|
---|
[23] | 436 | inet_ntoa(addr.sin_addr), inport);
|
---|
[18] | 437 | exit(1);
|
---|
[5] | 438 | }
|
---|
[32] | 439 |
|
---|
| 440 | if(stream_name) /* data stream from caster */
|
---|
| 441 | {
|
---|
| 442 | int init = 0;
|
---|
| 443 |
|
---|
| 444 | /* set socket buffer size */
|
---|
| 445 | setsockopt(gpsfd, SOL_SOCKET, SO_SNDBUF, (const char *) &size,
|
---|
| 446 | sizeof(const char *));
|
---|
| 447 | if(stream_user && stream_password)
|
---|
| 448 | {
|
---|
| 449 | /* leave some space for login */
|
---|
| 450 | nBufferBytes=snprintf(szSendBuffer, sizeof(szSendBuffer)-40,
|
---|
| 451 | "GET /%s HTTP/1.0\r\n"
|
---|
| 452 | "User-Agent: %s\r\n"
|
---|
| 453 | "Authorization: Basic ", stream_name, VERSION);
|
---|
| 454 | /* second check for old glibc */
|
---|
| 455 | if(nBufferBytes > (int)sizeof(szSendBuffer)-40 || nBufferBytes < 0)
|
---|
| 456 | {
|
---|
| 457 | fprintf(stderr, "Requested data too long\n");
|
---|
| 458 | exit(1);
|
---|
| 459 | }
|
---|
| 460 | nBufferBytes += encode(szSendBuffer+nBufferBytes,
|
---|
| 461 | sizeof(szSendBuffer)-nBufferBytes-5, stream_user, stream_password);
|
---|
| 462 | if(nBufferBytes > (int)sizeof(szSendBuffer)-5)
|
---|
| 463 | {
|
---|
| 464 | fprintf(stderr, "Username and/or password too long\n");
|
---|
| 465 | exit(1);
|
---|
| 466 | }
|
---|
| 467 | snprintf(szSendBuffer+nBufferBytes, 5, "\r\n\r\n");
|
---|
| 468 | nBufferBytes += 5;
|
---|
| 469 | }
|
---|
| 470 | else
|
---|
| 471 | {
|
---|
| 472 | nBufferBytes = snprintf(szSendBuffer, sizeof(szSendBuffer),
|
---|
| 473 | "GET /%s HTTP/1.0\r\n"
|
---|
| 474 | "User-Agent: %s\r\n"
|
---|
| 475 | "\r\n", stream_name, VERSION);
|
---|
| 476 | }
|
---|
| 477 | if((send(gpsfd, szSendBuffer, (size_t)nBufferBytes, 0))
|
---|
| 478 | != nBufferBytes)
|
---|
| 479 | {
|
---|
| 480 | fprintf(stderr, "ERROR: could not send to caster\n");
|
---|
| 481 | exit(1);
|
---|
| 482 | }
|
---|
| 483 | nBufferBytes = 0;
|
---|
| 484 | /* check caster's response */
|
---|
| 485 | while(!init && nBufferBytes < (int)sizeof(szSendBuffer)
|
---|
| 486 | && (nBufferBytes += recv(gpsfd, szSendBuffer,
|
---|
| 487 | sizeof(szSendBuffer)-nBufferBytes, 0)) > 0)
|
---|
| 488 | {
|
---|
| 489 | if(strstr(szSendBuffer, "\r\n"))
|
---|
| 490 | {
|
---|
| 491 | if(!strncmp(szSendBuffer, "ICY 200 OK\r\n", 10))
|
---|
| 492 | init = 1;
|
---|
| 493 | else
|
---|
| 494 | {
|
---|
| 495 | int k;
|
---|
| 496 | fprintf(stderr, "Could not get the requested data: ");
|
---|
| 497 | for(k = 0; k < nBufferBytes && szSendBuffer[k] != '\n'
|
---|
| 498 | && szSendBuffer[k] != '\r'; ++k)
|
---|
| 499 | {
|
---|
| 500 | fprintf(stderr, "%c", isprint(szSendBuffer[k])
|
---|
| 501 | ? szSendBuffer[k] : '.');
|
---|
| 502 | }
|
---|
| 503 | fprintf(stderr, "\n");
|
---|
| 504 | exit(1);
|
---|
| 505 | }
|
---|
| 506 | }
|
---|
| 507 | }
|
---|
| 508 | if(!init)
|
---|
| 509 | {
|
---|
| 510 | fprintf(stderr, "Could not init caster download.");
|
---|
| 511 | exit(1);
|
---|
| 512 | }
|
---|
| 513 | } /* end data stream from caster */
|
---|
| 514 |
|
---|
[23] | 515 | if(initfile && mode != SISNET)
|
---|
[21] | 516 | {
|
---|
| 517 | char buffer[1024];
|
---|
| 518 | FILE *fh;
|
---|
| 519 | int i;
|
---|
| 520 |
|
---|
| 521 | if((fh = fopen(initfile, "r")))
|
---|
| 522 | {
|
---|
| 523 | while((i = fread(buffer, 1, sizeof(buffer), fh)) > 0)
|
---|
| 524 | {
|
---|
[22] | 525 | if((send(gpsfd, buffer, (size_t)i, 0)) != i)
|
---|
[21] | 526 | {
|
---|
| 527 | perror("ERROR: sending init file");
|
---|
| 528 | exit(1);
|
---|
| 529 | }
|
---|
| 530 | }
|
---|
| 531 | if(i < 0)
|
---|
| 532 | {
|
---|
| 533 | perror("ERROR: reading init file");
|
---|
| 534 | exit(1);
|
---|
| 535 | }
|
---|
| 536 | fclose(fh);
|
---|
| 537 | }
|
---|
| 538 | else
|
---|
| 539 | {
|
---|
| 540 | fprintf(stderr, "ERROR: can't read init file %s\n", initfile);
|
---|
| 541 | exit(1);
|
---|
| 542 | }
|
---|
| 543 | }
|
---|
[5] | 544 | }
|
---|
[23] | 545 | if(mode == SISNET)
|
---|
| 546 | {
|
---|
| 547 | int i, j;
|
---|
| 548 | char buffer[1024];
|
---|
| 549 |
|
---|
[45] | 550 | i = snprintf(buffer, sizeof(buffer), sisnet >= 30 ? "AUTH,%s,%s\r\n"
|
---|
[32] | 551 | : "AUTH,%s,%s", sisnetuser, sisnetpassword);
|
---|
[23] | 552 | if((send(gpsfd, buffer, (size_t)i, 0)) != i)
|
---|
| 553 | {
|
---|
| 554 | perror("ERROR: sending authentication");
|
---|
| 555 | exit(1);
|
---|
| 556 | }
|
---|
[45] | 557 | i = sisnet >= 30 ? 7 : 5;
|
---|
[23] | 558 | if((j = recv(gpsfd, buffer, i, 0)) != i && strncmp("*AUTH", buffer, 5))
|
---|
| 559 | {
|
---|
| 560 | fprintf(stderr, "ERROR: SISNeT connect failed:");
|
---|
| 561 | for(i = 0; i < j; ++i)
|
---|
| 562 | {
|
---|
| 563 | if(buffer[i] != '\r' && buffer[i] != '\n')
|
---|
| 564 | {
|
---|
| 565 | fprintf(stderr, "%c", isprint(buffer[i]) ? buffer[i] : '.');
|
---|
| 566 | }
|
---|
| 567 | }
|
---|
| 568 | fprintf(stderr, "\n");
|
---|
| 569 | exit(1);
|
---|
| 570 | }
|
---|
[45] | 571 | if(sisnet >= 31)
|
---|
| 572 | {
|
---|
| 573 | if((send(gpsfd, "START\r\n", 7, 0)) != i)
|
---|
| 574 | {
|
---|
| 575 | perror("ERROR: sending start command");
|
---|
| 576 | exit(1);
|
---|
| 577 | }
|
---|
| 578 | }
|
---|
[23] | 579 | }
|
---|
[18] | 580 | break;
|
---|
| 581 | default:
|
---|
| 582 | usage(-1);
|
---|
| 583 | break;
|
---|
| 584 | }
|
---|
| 585 |
|
---|
| 586 | /* ----- main part ----- */
|
---|
[50] | 587 | for(;;)
|
---|
[18] | 588 | {
|
---|
[23] | 589 | if(!(he = gethostbyname(outhost)))
|
---|
| 590 | {
|
---|
| 591 | fprintf(stderr, "ERROR: host %s unknown\n", outhost);
|
---|
| 592 | usage(-2);
|
---|
| 593 | }
|
---|
| 594 |
|
---|
[18] | 595 | /* create socket */
|
---|
| 596 | if((sock_id = socket(AF_INET, SOCK_STREAM, 0)) < 0)
|
---|
[5] | 597 | {
|
---|
[23] | 598 | fprintf(stderr, "ERROR: could not create socket\n");
|
---|
[18] | 599 | exit(2);
|
---|
[5] | 600 | }
|
---|
[23] | 601 |
|
---|
| 602 | memset((char *) &addr, 0x00, sizeof(addr));
|
---|
| 603 | memcpy(&addr.sin_addr, he->h_addr, (size_t)he->h_length);
|
---|
| 604 | addr.sin_family = AF_INET;
|
---|
| 605 | addr.sin_port = htons(outport);
|
---|
| 606 |
|
---|
[18] | 607 | /* connect to caster */
|
---|
| 608 | fprintf(stderr, "caster output: host = %s, port = %d, mountpoint = %s\n",
|
---|
[23] | 609 | inet_ntoa(addr.sin_addr), outport, mountpoint);
|
---|
| 610 | if(connect(sock_id, (struct sockaddr *) &addr, sizeof(addr)) < 0)
|
---|
[18] | 611 | {
|
---|
| 612 | fprintf(stderr, "ERROR: can't connect output to %s at port %d\n",
|
---|
[23] | 613 | inet_ntoa(addr.sin_addr), outport);
|
---|
[18] | 614 | close(sock_id);
|
---|
| 615 | exit(3);
|
---|
| 616 | }
|
---|
| 617 |
|
---|
| 618 | /* set socket buffer size */
|
---|
| 619 | setsockopt(sock_id, SOL_SOCKET, SO_SNDBUF, (const char *) &size,
|
---|
| 620 | sizeof(const char *));
|
---|
| 621 | /* send message to caster */
|
---|
| 622 | szSendBuffer[0] = '\0';
|
---|
| 623 | sprintf(szSendBuffer, "SOURCE %s /%s\r\n", password, mountpoint);
|
---|
| 624 | strcat(szSendBuffer, "Source-Agent: ");
|
---|
| 625 | strcat(szSendBuffer, VERSION);
|
---|
| 626 | strcat(szSendBuffer, "\r\n");
|
---|
| 627 | strcat(szSendBuffer, "\r\n");
|
---|
| 628 | strcat(szSendBuffer, "\0");
|
---|
| 629 | nBufferBytes = strlen(szSendBuffer);
|
---|
[22] | 630 | if((send(sock_id, szSendBuffer, (size_t)nBufferBytes, 0)) != nBufferBytes)
|
---|
[18] | 631 | {
|
---|
| 632 | fprintf(stderr, "ERROR: could not send to caster\n");
|
---|
[50] | 633 | break;
|
---|
[18] | 634 | }
|
---|
| 635 | /* check caster's response */
|
---|
| 636 | nBufferBytes = recv(sock_id, szSendBuffer, sizeof(szSendBuffer), 0);
|
---|
| 637 | szSendBuffer[nBufferBytes] = '\0';
|
---|
[45] | 638 | if(!strstr(szSendBuffer, "OK"))
|
---|
[18] | 639 | {
|
---|
| 640 | char *a;
|
---|
| 641 | fprintf(stderr, "ERROR: caster's reply is not OK : ");
|
---|
| 642 | for(a = szSendBuffer; *a && *a != '\n' && *a != '\r'; ++a)
|
---|
| 643 | {
|
---|
| 644 | fprintf(stderr, "%.1s", isprint(*a) ? a : ".");
|
---|
| 645 | }
|
---|
| 646 | fprintf(stderr, "\n");
|
---|
[50] | 647 | break;
|
---|
[18] | 648 | }
|
---|
[24] | 649 | printf("connection successfull\n");
|
---|
[45] | 650 | send_receive_loop(sock_id, gpsfd);
|
---|
[18] | 651 | }
|
---|
[50] | 652 | close(sock_id);
|
---|
| 653 | sleep(5);
|
---|
| 654 | return 0;
|
---|
[5] | 655 | }
|
---|
| 656 |
|
---|
[45] | 657 | static void send_receive_loop(int sock, int fd)
|
---|
[5] | 658 | {
|
---|
[51] | 659 | int nodata = 0;
|
---|
[18] | 660 | char buffer[BUFSZ] = { 0 };
|
---|
[23] | 661 | char sisnetbackbuffer[200];
|
---|
[30] | 662 | int nBufferBytes = 0;
|
---|
[18] | 663 | /* data transmission */
|
---|
[5] | 664 | printf("transfering data ...\n");
|
---|
| 665 | while(1)
|
---|
[18] | 666 | {
|
---|
[51] | 667 | if(!nodata) alarm(ALARMTIME);
|
---|
| 668 | else nodata = 0;
|
---|
[23] | 669 |
|
---|
[18] | 670 | if(!nBufferBytes)
|
---|
[5] | 671 | {
|
---|
[45] | 672 | if(mode == SISNET && sisnet <= 30)
|
---|
[23] | 673 | {
|
---|
| 674 | int i;
|
---|
| 675 | /* a somewhat higher rate than 1 second to get really each block */
|
---|
| 676 | /* means we need to skip double blocks sometimes */
|
---|
| 677 | struct timeval tv = {0,700000};
|
---|
| 678 | select(0, 0, 0, 0, &tv);
|
---|
| 679 | memcpy(sisnetbackbuffer, buffer, sizeof(sisnetbackbuffer));
|
---|
[45] | 680 | i = (sisnet >= 30 ? 5 : 3);
|
---|
[23] | 681 | if((send(gpsfd, "MSG\r\n", i, 0)) != i)
|
---|
| 682 | {
|
---|
| 683 | perror("ERROR: sending data request");
|
---|
| 684 | exit(1);
|
---|
| 685 | }
|
---|
| 686 | }
|
---|
[18] | 687 | /* receiving data */
|
---|
[32] | 688 | nBufferBytes = read(fd, buffer, sizeof(buffer));
|
---|
[18] | 689 | if(!nBufferBytes)
|
---|
| 690 | {
|
---|
| 691 | printf("WARNING: no data received from input\n");
|
---|
[45] | 692 | sleep(3);
|
---|
[51] | 693 | nodata = 1;
|
---|
[18] | 694 | continue;
|
---|
| 695 | }
|
---|
| 696 | else if(nBufferBytes < 0)
|
---|
| 697 | {
|
---|
| 698 | perror("ERROR: reading input failed");
|
---|
| 699 | exit(1);
|
---|
| 700 | }
|
---|
[32] | 701 | /* we can compare the whole buffer, as the additional bytes
|
---|
| 702 | remain unchanged */
|
---|
[46] | 703 | if(mode == SISNET && sisnet <= 30 &&
|
---|
| 704 | !memcmp(sisnetbackbuffer, buffer, sizeof(sisnetbackbuffer)))
|
---|
[23] | 705 | {
|
---|
| 706 | nBufferBytes = 0;
|
---|
| 707 | }
|
---|
[5] | 708 | }
|
---|
[23] | 709 | if(nBufferBytes)
|
---|
[18] | 710 | {
|
---|
[30] | 711 | int i;
|
---|
[23] | 712 | /* send data */
|
---|
| 713 | if((i = send(sock, buffer, (size_t)nBufferBytes, MSG_DONTWAIT))
|
---|
[32] | 714 | != nBufferBytes)
|
---|
[18] | 715 | {
|
---|
[34] | 716 | if(i < 0)
|
---|
[23] | 717 | {
|
---|
[34] | 718 | if(errno != EAGAIN)
|
---|
| 719 | {
|
---|
| 720 | perror("WARNING: could not send data - retry connection");
|
---|
| 721 | close(sock);
|
---|
| 722 | sleep(5);
|
---|
| 723 | return;
|
---|
| 724 | }
|
---|
[23] | 725 | }
|
---|
| 726 | else if(i)
|
---|
| 727 | {
|
---|
| 728 | memmove(buffer, buffer+i, (size_t)(nBufferBytes-i));
|
---|
| 729 | nBufferBytes -= i;
|
---|
| 730 | }
|
---|
[18] | 731 | }
|
---|
[23] | 732 | else
|
---|
[18] | 733 | {
|
---|
[23] | 734 | nBufferBytes = 0;
|
---|
[18] | 735 | }
|
---|
| 736 | }
|
---|
| 737 | }
|
---|
[5] | 738 | }
|
---|
| 739 |
|
---|
| 740 | /*
|
---|
| 741 | * openserial
|
---|
| 742 | *
|
---|
| 743 | * Open the serial port with the given device name and configure it for
|
---|
| 744 | * reading NMEA data from a GPS receiver.
|
---|
| 745 | *
|
---|
| 746 | * Parameters:
|
---|
| 747 | * tty : pointer to : A zero-terminated string containing the device
|
---|
| 748 | * unsigned char name of the appropriate serial port.
|
---|
| 749 | * blocksz : integer : Block size for port I/O
|
---|
[22] | 750 | * baud : integer : Baud rate for port I/O
|
---|
[5] | 751 | *
|
---|
| 752 | * Return Value:
|
---|
| 753 | * The function returns a file descriptor for the opened port if successful.
|
---|
| 754 | * The function returns -1 in the event of an error.
|
---|
| 755 | *
|
---|
| 756 | * Remarks:
|
---|
| 757 | *
|
---|
| 758 | */
|
---|
| 759 |
|
---|
[22] | 760 | static int openserial(const char * tty, int blocksz, int baud)
|
---|
[5] | 761 | {
|
---|
[18] | 762 | int fd;
|
---|
| 763 | struct termios termios;
|
---|
| 764 |
|
---|
| 765 | fd = open(tty, O_RDWR | O_NONBLOCK | O_EXLOCK);
|
---|
| 766 | if(fd < 0)
|
---|
| 767 | {
|
---|
| 768 | perror("ERROR: opening serial connection");
|
---|
[5] | 769 | return (-1);
|
---|
| 770 | }
|
---|
[18] | 771 | if(tcgetattr(fd, &termios) < 0)
|
---|
| 772 | {
|
---|
| 773 | perror("ERROR: get serial attributes");
|
---|
[5] | 774 | return (-1);
|
---|
| 775 | }
|
---|
| 776 | termios.c_iflag = 0;
|
---|
[18] | 777 | termios.c_oflag = 0; /* (ONLRET) */
|
---|
[5] | 778 | termios.c_cflag = CS8 | CLOCAL | CREAD;
|
---|
| 779 | termios.c_lflag = 0;
|
---|
| 780 | {
|
---|
[18] | 781 | int cnt;
|
---|
| 782 | for(cnt = 0; cnt < NCCS; cnt++)
|
---|
[5] | 783 | termios.c_cc[cnt] = -1;
|
---|
| 784 | }
|
---|
| 785 | termios.c_cc[VMIN] = blocksz;
|
---|
| 786 | termios.c_cc[VTIME] = 2;
|
---|
[18] | 787 |
|
---|
[5] | 788 | #if (B4800 != 4800)
|
---|
| 789 | /*
|
---|
[11] | 790 | * Not every system has speed settings equal to absolute speed value.
|
---|
[5] | 791 | */
|
---|
[18] | 792 |
|
---|
[22] | 793 | switch (baud)
|
---|
[18] | 794 | {
|
---|
| 795 | case 300:
|
---|
[22] | 796 | baud = B300;
|
---|
[18] | 797 | break;
|
---|
| 798 | case 1200:
|
---|
[22] | 799 | baud = B1200;
|
---|
[18] | 800 | break;
|
---|
| 801 | case 2400:
|
---|
[22] | 802 | baud = B2400;
|
---|
[18] | 803 | break;
|
---|
| 804 | case 4800:
|
---|
[22] | 805 | baud = B4800;
|
---|
[18] | 806 | break;
|
---|
| 807 | case 9600:
|
---|
[22] | 808 | baud = B9600;
|
---|
[18] | 809 | break;
|
---|
| 810 | case 19200:
|
---|
[22] | 811 | baud = B19200;
|
---|
[18] | 812 | break;
|
---|
| 813 | case 38400:
|
---|
[22] | 814 | baud = B38400;
|
---|
[18] | 815 | break;
|
---|
[11] | 816 | #ifdef B57600
|
---|
[18] | 817 | case 57600:
|
---|
[22] | 818 | baud = B57600;
|
---|
[18] | 819 | break;
|
---|
[11] | 820 | #endif
|
---|
| 821 | #ifdef B115200
|
---|
[18] | 822 | case 115200:
|
---|
[22] | 823 | baud = B115200;
|
---|
[18] | 824 | break;
|
---|
[11] | 825 | #endif
|
---|
| 826 | #ifdef B230400
|
---|
[18] | 827 | case 230400:
|
---|
[22] | 828 | baud = B230400;
|
---|
[18] | 829 | break;
|
---|
[11] | 830 | #endif
|
---|
[18] | 831 | default:
|
---|
| 832 | fprintf(stderr, "WARNING: Baud settings not useful, using 19200\n");
|
---|
[22] | 833 | baud = B19200;
|
---|
[18] | 834 | break;
|
---|
| 835 | }
|
---|
[5] | 836 | #endif
|
---|
[18] | 837 |
|
---|
[22] | 838 | if(cfsetispeed(&termios, baud) != 0)
|
---|
[18] | 839 | {
|
---|
| 840 | perror("ERROR: setting serial speed with cfsetispeed");
|
---|
| 841 | return (-1);
|
---|
| 842 | }
|
---|
[22] | 843 | if(cfsetospeed(&termios, baud) != 0)
|
---|
[18] | 844 | {
|
---|
| 845 | perror("ERROR: setting serial speed with cfsetospeed");
|
---|
| 846 | return (-1);
|
---|
| 847 | }
|
---|
| 848 | if(tcsetattr(fd, TCSANOW, &termios) < 0)
|
---|
| 849 | {
|
---|
| 850 | perror("ERROR: setting serial attributes");
|
---|
| 851 | return (-1);
|
---|
| 852 | }
|
---|
| 853 | if(fcntl(fd, F_SETFL, 0) == -1)
|
---|
| 854 | {
|
---|
| 855 | perror("WARNING: setting blocking mode failed");
|
---|
| 856 | }
|
---|
[5] | 857 | return (fd);
|
---|
| 858 | }
|
---|
| 859 |
|
---|
| 860 | /*
|
---|
| 861 | * usage
|
---|
| 862 | *
|
---|
| 863 | * Send a usage message to standard error and quit the program.
|
---|
| 864 | *
|
---|
| 865 | * Parameters:
|
---|
| 866 | * None.
|
---|
| 867 | *
|
---|
| 868 | * Return Value:
|
---|
| 869 | * The function does not return a value.
|
---|
| 870 | *
|
---|
| 871 | * Remarks:
|
---|
| 872 | *
|
---|
| 873 | */
|
---|
| 874 |
|
---|
[30] | 875 | static
|
---|
| 876 | #ifdef __GNUC__
|
---|
| 877 | __attribute__ ((noreturn))
|
---|
| 878 | #endif /* __GNUC__ */
|
---|
| 879 | void usage(int rc)
|
---|
[5] | 880 | {
|
---|
[18] | 881 | fprintf(stderr, "Usage: %s [OPTIONS]\n", VERSION);
|
---|
[32] | 882 | fprintf(stderr, " Options are: [-] \n");
|
---|
| 883 | fprintf(stderr, " -a DestinationCaster name or address (default: %s)\n",
|
---|
[18] | 884 | NTRIP_CASTER);
|
---|
[32] | 885 | fprintf(stderr, " -p DestinationCaster port (default: %d)\n", NTRIP_PORT);
|
---|
| 886 | fprintf(stderr, " -m DestinationCaster mountpoint\n");
|
---|
| 887 | fprintf(stderr, " -c DestinationCaster password\n");
|
---|
[18] | 888 | fprintf(stderr, " -h|? print this help screen\n");
|
---|
[32] | 889 | fprintf(stderr, " -M <mode> sets the input mode\n");
|
---|
| 890 | fprintf(stderr, " (1=serial, 2=tcpsocket, 3=file, 4=sisnet"
|
---|
| 891 | ", 5=udpsocket, 6=caster)\n");
|
---|
[18] | 892 | fprintf(stderr, " Mode = file:\n");
|
---|
| 893 | fprintf(stderr, " -s file, simulate data stream by reading log file\n");
|
---|
| 894 | fprintf(stderr, " default/current setting is %s\n", filepath);
|
---|
| 895 | fprintf(stderr, " Mode = serial:\n");
|
---|
| 896 | fprintf(stderr, " -b baud_rate, sets serial input baud rate\n");
|
---|
| 897 | fprintf(stderr, " default/current value is %d\n", ttybaud);
|
---|
| 898 | fprintf(stderr, " -i input_device, sets name of serial input device\n");
|
---|
| 899 | fprintf(stderr, " default/current value is %s\n", ttyport);
|
---|
| 900 | fprintf(stderr, " (normally a symbolic link to /dev/tty\?\?)\n");
|
---|
[23] | 901 | fprintf(stderr, " Mode = tcpsocket or udpsocket:\n");
|
---|
| 902 | fprintf(stderr, " -P receiver port (default: %d)\n", SERV_TCP_PORT);
|
---|
[32] | 903 | fprintf(stderr, " -H hostname of TCP server (default: %s)\n",
|
---|
| 904 | SERV_HOST_ADDR);
|
---|
[21] | 905 | fprintf(stderr, " -f initfile send to server\n");
|
---|
[32] | 906 | fprintf(stderr, " -B bindmode: bind to incoming UDP stream\n");
|
---|
[23] | 907 | fprintf(stderr, " Mode = sisnet:\n");
|
---|
| 908 | fprintf(stderr, " -P receiver port (default: %d)\n", SISNET_PORT);
|
---|
[32] | 909 | fprintf(stderr, " -H hostname of TCP server (default: %s)\n",
|
---|
| 910 | SISNET_SERVER);
|
---|
[23] | 911 | fprintf(stderr, " -u username\n");
|
---|
| 912 | fprintf(stderr, " -l password\n");
|
---|
[45] | 913 | fprintf(stderr, " -V version [2.1, 3.0 or 3.1] (default: 3.1)\n");
|
---|
[32] | 914 | fprintf(stderr, " Mode = caster:\n");
|
---|
| 915 | fprintf(stderr, " -P SourceCaster port (default: %d)\n", NTRIP_PORT);
|
---|
| 916 | fprintf(stderr, " -H SourceCaster hostname (default: %s)\n",
|
---|
| 917 | NTRIP_CASTER);
|
---|
| 918 | fprintf(stderr, " -D SourceCaster mountpoint\n");
|
---|
| 919 | fprintf(stderr, " -U SourceCaster mountpoint username\n");
|
---|
| 920 | fprintf(stderr, " -W SourceCaster mountpoint password\n");
|
---|
[23] | 921 | fprintf(stderr, "\n");
|
---|
[18] | 922 | exit(rc);
|
---|
[5] | 923 | }
|
---|
[32] | 924 |
|
---|
| 925 | static const char encodingTable [64] = {
|
---|
| 926 | 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
|
---|
| 927 | 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
|
---|
| 928 | 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
|
---|
| 929 | 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'
|
---|
| 930 | };
|
---|
| 931 |
|
---|
| 932 | /* does not buffer overrun, but breaks directly after an error */
|
---|
| 933 | /* returns the number of required bytes */
|
---|
| 934 | static int encode(char *buf, int size, const char *user, const char *pwd)
|
---|
| 935 | {
|
---|
| 936 | unsigned char inbuf[3];
|
---|
| 937 | char *out = buf;
|
---|
| 938 | int i, sep = 0, fill = 0, bytes = 0;
|
---|
| 939 |
|
---|
| 940 | while(*user || *pwd)
|
---|
| 941 | {
|
---|
| 942 | i = 0;
|
---|
| 943 | while(i < 3 && *user) inbuf[i++] = *(user++);
|
---|
| 944 | if(i < 3 && !sep) {inbuf[i++] = ':'; ++sep; }
|
---|
| 945 | while(i < 3 && *pwd) inbuf[i++] = *(pwd++);
|
---|
| 946 | while(i < 3) {inbuf[i++] = 0; ++fill; }
|
---|
| 947 | if(out-buf < size-1)
|
---|
| 948 | *(out++) = encodingTable[(inbuf [0] & 0xFC) >> 2];
|
---|
| 949 | if(out-buf < size-1)
|
---|
| 950 | *(out++) = encodingTable[((inbuf [0] & 0x03) << 4)
|
---|
| 951 | | ((inbuf [1] & 0xF0) >> 4)];
|
---|
| 952 | if(out-buf < size-1)
|
---|
| 953 | {
|
---|
| 954 | if(fill == 2)
|
---|
| 955 | *(out++) = '=';
|
---|
| 956 | else
|
---|
| 957 | *(out++) = encodingTable[((inbuf [1] & 0x0F) << 2)
|
---|
| 958 | | ((inbuf [2] & 0xC0) >> 6)];
|
---|
| 959 | }
|
---|
| 960 | if(out-buf < size-1)
|
---|
| 961 | {
|
---|
| 962 | if(fill >= 1)
|
---|
| 963 | *(out++) = '=';
|
---|
| 964 | else
|
---|
| 965 | *(out++) = encodingTable[inbuf [2] & 0x3F];
|
---|
| 966 | }
|
---|
| 967 | bytes += 4;
|
---|
| 968 | }
|
---|
| 969 | if(out-buf < size)
|
---|
| 970 | *out = 0;
|
---|
| 971 | return bytes;
|
---|
| 972 | }
|
---|