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333 lines
9.3 KiB
333 lines
9.3 KiB
/*
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* Copyright (C) 2010 by Scott Lawson KI4LKF
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* Copyright (C) 2018-2020 by Thomas A. Early N7TAE
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdio.h>
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#include <fcntl.h>
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#include <string.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <time.h>
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#include <string>
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#include "QnetTypeDefs.h"
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#include "Random.h"
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#include "QnetConfigure.h"
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#include "UnixDgramSocket.h"
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#define VERSION "v523"
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static int module;
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static time_t tNow = 0;
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static short streamid_raw = 0;
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static std::string REPEATER, togateway;
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static int PLAY_WAIT, PLAY_DELAY;
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static unsigned char silence[9] = { 0x9E, 0x8D, 0x32, 0x88, 0x26, 0x1A, 0x3F, 0x61, 0xE8 };
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static unsigned short crc_tabccitt[256] =
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{
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0x0000,0x1189,0x2312,0x329b,0x4624,0x57ad,0x6536,0x74bf,0x8c48,0x9dc1,0xaf5a,0xbed3,0xca6c,0xdbe5,0xe97e,0xf8f7,
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0x1081,0x0108,0x3393,0x221a,0x56a5,0x472c,0x75b7,0x643e,0x9cc9,0x8d40,0xbfdb,0xae52,0xdaed,0xcb64,0xf9ff,0xe876,
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0x2102,0x308b,0x0210,0x1399,0x6726,0x76af,0x4434,0x55bd,0xad4a,0xbcc3,0x8e58,0x9fd1,0xeb6e,0xfae7,0xc87c,0xd9f5,
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0x3183,0x200a,0x1291,0x0318,0x77a7,0x662e,0x54b5,0x453c,0xbdcb,0xac42,0x9ed9,0x8f50,0xfbef,0xea66,0xd8fd,0xc974,
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0x4204,0x538d,0x6116,0x709f,0x0420,0x15a9,0x2732,0x36bb,0xce4c,0xdfc5,0xed5e,0xfcd7,0x8868,0x99e1,0xab7a,0xbaf3,
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0x5285,0x430c,0x7197,0x601e,0x14a1,0x0528,0x37b3,0x263a,0xdecd,0xcf44,0xfddf,0xec56,0x98e9,0x8960,0xbbfb,0xaa72,
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0x6306,0x728f,0x4014,0x519d,0x2522,0x34ab,0x0630,0x17b9,0xef4e,0xfec7,0xcc5c,0xddd5,0xa96a,0xb8e3,0x8a78,0x9bf1,
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0x7387,0x620e,0x5095,0x411c,0x35a3,0x242a,0x16b1,0x0738,0xffcf,0xee46,0xdcdd,0xcd54,0xb9eb,0xa862,0x9af9,0x8b70,
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0x8408,0x9581,0xa71a,0xb693,0xc22c,0xd3a5,0xe13e,0xf0b7,0x0840,0x19c9,0x2b52,0x3adb,0x4e64,0x5fed,0x6d76,0x7cff,
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0x9489,0x8500,0xb79b,0xa612,0xd2ad,0xc324,0xf1bf,0xe036,0x18c1,0x0948,0x3bd3,0x2a5a,0x5ee5,0x4f6c,0x7df7,0x6c7e,
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0xa50a,0xb483,0x8618,0x9791,0xe32e,0xf2a7,0xc03c,0xd1b5,0x2942,0x38cb,0x0a50,0x1bd9,0x6f66,0x7eef,0x4c74,0x5dfd,
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0xb58b,0xa402,0x9699,0x8710,0xf3af,0xe226,0xd0bd,0xc134,0x39c3,0x284a,0x1ad1,0x0b58,0x7fe7,0x6e6e,0x5cf5,0x4d7c,
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0xc60c,0xd785,0xe51e,0xf497,0x8028,0x91a1,0xa33a,0xb2b3,0x4a44,0x5bcd,0x6956,0x78df,0x0c60,0x1de9,0x2f72,0x3efb,
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0xd68d,0xc704,0xf59f,0xe416,0x90a9,0x8120,0xb3bb,0xa232,0x5ac5,0x4b4c,0x79d7,0x685e,0x1ce1,0x0d68,0x3ff3,0x2e7a,
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0xe70e,0xf687,0xc41c,0xd595,0xa12a,0xb0a3,0x8238,0x93b1,0x6b46,0x7acf,0x4854,0x59dd,0x2d62,0x3ceb,0x0e70,0x1ff9,
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0xf78f,0xe606,0xd49d,0xc514,0xb1ab,0xa022,0x92b9,0x8330,0x7bc7,0x6a4e,0x58d5,0x495c,0x3de3,0x2c6a,0x1ef1,0x0f78
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};
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static CQnetConfigure cfg;
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static bool ReadCfgFile()
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{
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const std::string estr;
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std::string type;
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std::string path = "module_";
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path.append(1, 'a'+module);
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if (! cfg.KeyExists(path))
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{
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fprintf(stderr, "%s not defined!\n", path.c_str());
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return true;
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}
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cfg.GetValue(path, estr, type, 1, 16);
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cfg.GetValue(path+"_callsign", type, REPEATER, 0, 6);
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if (REPEATER.length() < 4)
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{
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if (cfg.GetValue("ircddb_login", estr, REPEATER, 3, 6))
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{
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fprintf(stderr, "no Callsign for the repeater was found!\n");
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return true;
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}
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}
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cfg.GetValue("gateway_fromremote", estr, togateway, 1, FILENAME_MAX);
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cfg.GetValue("timing_play_wait", estr, PLAY_WAIT, 1, 10);
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cfg.GetValue("timing_play_delay", estr, PLAY_DELAY, 15, 25);
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return false;
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}
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static void calcPFCS(unsigned char rawbytes[56])
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{
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unsigned short crc_dstar_ffff = 0xffff;
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unsigned short tmp, short_c;
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short int i;
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for (i = 15; i < 54 ; i++)
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{
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short_c = 0x00ff & (unsigned short)rawbytes[i];
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tmp = (crc_dstar_ffff & 0x00ff) ^ short_c;
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crc_dstar_ffff = (crc_dstar_ffff >> 8) ^ crc_tabccitt[tmp];
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}
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crc_dstar_ffff = ~crc_dstar_ffff;
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tmp = crc_dstar_ffff;
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rawbytes[54] = (unsigned char)(crc_dstar_ffff & 0xff);
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rawbytes[55] = (unsigned char)((tmp >> 8) & 0xff);
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return;
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}
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static void ToUpper(std::string &str)
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{
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for (unsigned int i=0; i<str.size(); i++)
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if (islower(str[i]))
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str[i] = toupper(str[i]);
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}
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int main(int argc, char *argv[])
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{
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if (argc != 4)
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{
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fprintf(stderr, "Usage: %s <module> <mycall> <yourcall>\n", argv[0]);
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fprintf(stderr, "Example: %s c n7tae xrf757al\n", argv[0]);
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fprintf(stderr, "Where...\n");
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fprintf(stderr, " c is the local repeater module\n");
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fprintf(stderr, " n7tae is the value of mycall\n");
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fprintf(stderr, " xrf757al is the value of yourcall, in this case this is a Link command\n\n");
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return 0;
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}
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switch (argv[1][0])
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{
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case '0':
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case 'a':
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case 'A':
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module = 0;
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break;
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case '1':
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case 'b':
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case 'B':
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module = 1;
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break;
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case '2':
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case 'c':
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case 'C':
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module = 2;
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break;
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default:
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fprintf(stderr, "module must be 0, a, A, 1, b, B, 2, c or C, not %s\n", argv[1]);
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return 1;
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}
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std::string cfgfile(CFG_DIR);
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cfgfile += "/qn.cfg";
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if (cfg.Initialize(cfgfile.c_str()))
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return 1;
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if (ReadCfgFile())
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return 1;
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if (REPEATER.size() > 6)
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{
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printf("repeaterCallsign can not be more than 6 characters, %s is invalid\n", REPEATER.c_str());
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return 1;
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}
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ToUpper(REPEATER);
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if (strlen(argv[2]) > 8)
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{
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printf("MYCALL can not be more than 8 characters, %s is invalid\n", argv[2]);
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return 1;
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}
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std::string mycall(argv[2]);
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ToUpper(mycall);
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if (strlen(argv[3]) > 8)
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{
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printf("YOURCALL can not be more than 8 characters, %s is invalid\n", argv[3]);
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return 1;
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}
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std::string yourcall(argv[3]);
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ToUpper(yourcall);
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// replace underscores with spaces
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auto pos = yourcall.find_first_of('_');
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while (yourcall.npos != pos)
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{
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yourcall[pos] = ' ';
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pos = yourcall.find_first_of('_');
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}
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unsigned long int delay = PLAY_DELAY * 1000;
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sleep(PLAY_WAIT);
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std::string RADIO_ID("QnetRemote ");
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RADIO_ID.append(VERSION);
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RADIO_ID.resize(20, ' ');
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time(&tNow);
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CRandom Random;
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CUnixDgramWriter ToGateway;
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ToGateway.SetUp(togateway.c_str());
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SDSVT pkt;
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memcpy(pkt.title, "DSVT", 4);
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pkt.config = 0x10U;
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memset(pkt.flaga, 0U, 3U);
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pkt.id = 0x20U;
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pkt.flagb[0] = 0x0U;
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pkt.flagb[1] = 0x1U;
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if (module == 0)
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pkt.flagb[2] = 0x3U;
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else if (module == 1)
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pkt.flagb[2] = 0x1U;
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else if (module == 2)
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pkt.flagb[2] = 0x2U;
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else
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pkt.flagb[3] = 0x0U;
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streamid_raw = Random.NewStreamID();
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pkt.streamid = htons(streamid_raw);
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pkt.ctrl = 0x80;
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pkt.hdr.flag[0] = pkt.hdr.flag[1] = pkt.hdr.flag[2] = 0x00;
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REPEATER.resize(7, ' ');
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memcpy(pkt.hdr.rpt2, REPEATER.c_str(), 8);
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pkt.hdr.rpt2[7] = 'G';
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memcpy(pkt.hdr.rpt1, REPEATER.c_str(), 8);
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pkt.hdr.rpt1[7] = 'A' + module;
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mycall.resize(8, ' ');
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memcpy(pkt.hdr.mycall, mycall.c_str(), 8);
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memcpy(pkt.hdr.sfx, "QNET", 4);
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if (yourcall.size() < 3)
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yourcall = std::string(8-yourcall.size(), ' ') + yourcall; // right justify 1 or 2 letter commands
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else
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yourcall.resize(8, ' ');
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memcpy(pkt.hdr.urcall, yourcall.c_str(), 8);
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calcPFCS(pkt.title);
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// send the header
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if (56 != ToGateway.Write(pkt.title, 56))
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{
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printf("%s: ERROR: Couldn't send header!\n", argv[0]);
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return 1;
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}
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// prepare and send 10 voice packets
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pkt.config = 0x20U;
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memcpy(pkt.vasd.voice, silence, 9);
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for (int i=0; i<10; i++)
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{
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/* start sending silence + text */
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pkt.ctrl = i;
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switch (i)
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{
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case 0: // sync voice frame
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pkt.vasd.text[0] = 0x55;
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pkt.vasd.text[1] = 0x2d;
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pkt.vasd.text[2] = 0x16;
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break;
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case 1:
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pkt.vasd.text[0] = '@' ^ 0x70;
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pkt.vasd.text[1] = RADIO_ID[0] ^ 0x4f;
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pkt.vasd.text[2] = RADIO_ID[1] ^ 0x93;
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break;
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case 2:
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pkt.vasd.text[0] = RADIO_ID[2] ^ 0x70;
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pkt.vasd.text[1] = RADIO_ID[3] ^ 0x4f;
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pkt.vasd.text[2] = RADIO_ID[4] ^ 0x93;
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break;
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case 3:
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pkt.vasd.text[0] = 'A' ^ 0x70;
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pkt.vasd.text[1] = RADIO_ID[5] ^ 0x4f;
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pkt.vasd.text[2] = RADIO_ID[6] ^ 0x93;
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break;
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case 4:
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pkt.vasd.text[0] = RADIO_ID[7] ^ 0x70;
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pkt.vasd.text[1] = RADIO_ID[8] ^ 0x4f;
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pkt.vasd.text[2] = RADIO_ID[9] ^ 0x93;
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break;
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case 5:
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pkt.vasd.text[0] = 'B' ^ 0x70;
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pkt.vasd.text[1] = RADIO_ID[10] ^ 0x4f;
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pkt.vasd.text[2] = RADIO_ID[11] ^ 0x93;
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break;
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case 6:
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pkt.vasd.text[0] = RADIO_ID[12] ^ 0x70;
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pkt.vasd.text[1] = RADIO_ID[13] ^ 0x4f;
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pkt.vasd.text[2] = RADIO_ID[14] ^ 0x93;
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break;
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case 7:
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pkt.vasd.text[0] = 'C' ^ 0x70;
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pkt.vasd.text[1] = RADIO_ID[15] ^ 0x4f;
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pkt.vasd.text[2] = RADIO_ID[16] ^ 0x93;
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break;
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case 8:
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pkt.vasd.text[0] = RADIO_ID[17] ^ 0x70;
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pkt.vasd.text[1] = RADIO_ID[18] ^ 0x4f;
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pkt.vasd.text[2] = RADIO_ID[19] ^ 0x93;
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break;
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case 9: // terminal voice packet
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pkt.ctrl |= 0x40;
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pkt.vasd.text[0] = 0x70;
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pkt.vasd.text[1] = 0x4f;
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pkt.vasd.text[2] = 0x93;
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break;
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}
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if (27 != ToGateway.Write(pkt.title, 27))
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{
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printf("%s: ERROR: could not send voice packet %d\n", argv[0], i);
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return 1;
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}
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usleep(delay);
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}
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return 0;
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}
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