mirror of
https://github.com/ShaYmez/MMDVM_CM.git
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Original cross-mode conversion files
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Andy CA6JAU
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/*
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* Copyright (C) 2016,2017 by Jonathan Naylor G4KLX
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* Copyright (C) 2018 by Andy Uribe CA6JAU
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* Copyright (C) 2018 by Manuel Sanchez EA7EE
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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 "APRSReader.h"
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#include "Timer.h"
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#include "Log.h"
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <cctype>
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#include <time.h>
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#if defined(_WIN32) || defined(_WIN64)
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static const unsigned __int64 epoch = ((unsigned __int64)116444736000000000ULL);
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int gettimeofday(struct timeval * tp, struct timezone * tzp)
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{
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FILETIME file_time;
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SYSTEMTIME system_time;
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ULARGE_INTEGER ularge;
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GetSystemTime(&system_time);
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SystemTimeToFileTime(&system_time, &file_time);
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ularge.LowPart = file_time.dwLowDateTime;
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ularge.HighPart = file_time.dwHighDateTime;
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tp->tv_sec = (long)((ularge.QuadPart - epoch) / 10000000L);
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tp->tv_usec = (long)(system_time.wMilliseconds * 1000);
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return 0;
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}
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#else
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#include <sys/time.h>
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#endif
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const unsigned int APRS_TIMEOUT = 10U;
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CAPRSReader::CAPRSReader(std::string ApiKey,int refres_time) :
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CThread(),
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m_ApiKey(ApiKey),
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m_cs(),
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m_stop(false),
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m_new_callsign(false),
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m_refres_time(refres_time),
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m_lat_table(),
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m_lon_table(),
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m_time_table()
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{
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m_lat_table.clear();
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m_lon_table.clear();
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m_time_table.clear();
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run();
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}
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CAPRSReader::~CAPRSReader()
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{
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}
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void CAPRSReader::entry()
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{
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LogMessage("Started the APRS Reader lookup thread");
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while (!m_stop) {
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while(!m_new_callsign)
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sleep(1000U);
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load_call();
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m_new_callsign = false;
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}
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LogMessage("Stopped the APRS Reader lookup thread");
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}
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void CAPRSReader::stop()
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{
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m_stop = true;
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}
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void CAPRSReader::formatGPS(unsigned char *buffer, int latitude, int longitude)
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{
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int lon_sign, lat_sign, a, b;
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if (longitude < 0) {
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longitude *= -1;
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lon_sign = 0x50;
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} else
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lon_sign = 0x30;
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if (latitude < 0) {
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lat_sign = 0x30;
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latitude *= -1;
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} else
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lat_sign = 0x50;
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// Latitude
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int lat_dec = latitude / 10000;
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int lat_uni = (latitude / 1000) % 10;
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*(buffer + 5U) = lat_dec | lat_sign;
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*(buffer + 6U) = lat_uni | lat_sign;
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int lat_min = (latitude - (lat_dec * 10 + lat_uni) * 1000) * 6;
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int lat_min_dec = lat_min / 1000;
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int lat_min_uni = (lat_min / 100) % 10;
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*(buffer+7U) = lat_min_dec | lat_sign;
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*(buffer+8U) = lat_min_uni | lat_sign;
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int lat_frac = lat_min - (lat_min_dec * 10 + lat_min_uni) * 100;
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int lat_frac_dec = lat_frac / 10;
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int lat_frac_uni = lat_frac % 10;
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int lon_grad = longitude / 1000;
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if (lon_grad >= 0 && lon_grad <= 9) {
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a = 0x50;
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b = (lon_grad + 0x76U);
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} else if (lon_grad >= 10 && lon_grad <= 99) {
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a = 0x30;
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b = ((lon_grad - 10U) + 0x26U);
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} else if (lon_grad >= 100 && lon_grad <= 109) {
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a = 0x50;
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b = ((lon_grad - 100U) + 0x6CU);
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}
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else {
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a = 0x50;
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b = ((lon_grad - 110U) + 0x26U);
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}
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*(buffer + 9U) = lat_frac_dec | a;
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*(buffer + 10U) = lat_frac_uni | lon_sign;
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*(buffer + 11U) = b | lon_sign;
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int long_min = ((longitude - (lon_grad * 1000)) * 6) / 100;
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if (long_min >= 0 && long_min <= 9)
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b = long_min + 0x58U;
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else
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b=(long_min - 10U) + 0x26;
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*(buffer + 12U) = b;
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int long_min_frac = ((longitude - (lon_grad * 1000)) * 6) - (long_min * 100);
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*(buffer + 13U) = long_min_frac + 0x1CU;
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//crc calculation
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int i;
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int crc = 0;
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for (i = 0;i < 19; i++)
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crc += *(buffer + i);
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crc &= 0x00FF;
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*(buffer + 19U) = crc;
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}
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bool CAPRSReader::load_call()
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{
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struct timeval timeinfo;
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unsigned long epoch;
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int longitude = 0;
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int latitude = 0;
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unsigned char buffer[10000];
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int nDataLength;
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std::string website_HTML;
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// get information
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// LogMessage("Searching %s", callsign.c_str());
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// website url
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std::string url = "/api/get?name=" + m_cs + "-Y," + m_cs + "-7," + m_cs + "-8," + m_cs + "-9,";
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url = url + m_cs + "-14," + m_cs + "&what=loc&apikey=" + m_ApiKey + "&format=json";
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//HTTP GET
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std::string get_http = "GET " + url + " HTTP/1.1\r\nHost: api.aprs.fi\r\nUser-Agent: YSF2DMR/0.12\r\n\r\n";
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CTCPSocket sockfd("api.aprs.fi", 80);
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bool ret = sockfd.open();
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if (!ret){
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LogMessage("Could not connect to api.aprs.fi");
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return false;
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}
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// send GET / HTTP
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sockfd.write((const unsigned char*)get_http.c_str(), strlen(get_http.c_str()));
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// recieve html
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while ((nDataLength = sockfd.read(buffer, 10000, APRS_TIMEOUT)) > 0){
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int i = 0;
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char tmp_str[20];
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for (i = 0; i < nDataLength; i++) {
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if (i > 5 && buffer[i - 4] == '\"' && buffer[i - 3] == 'l' && buffer[i - 2] == 'a' && buffer[i - 1] == 't' && buffer[i] == '\"'){
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::memcpy(tmp_str, buffer + i + 3, 8U);
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tmp_str[8] = 0;
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//LogMessage("Latitude: %s", tmp_str);
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latitude = (int)(atof(tmp_str) * 1000);
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m_lat_table[m_cs] = latitude;
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}
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if (i > 5 && buffer[i - 4] == '\"' && buffer[i - 3] == 'l' && buffer[i - 2] == 'n' && buffer[i - 1] == 'g' && buffer[i] == '\"'){
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::memcpy(tmp_str,buffer + i + 3, 8U);
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tmp_str[8] = 0;
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//LogMessage("Longitude: %s", tmp_str);
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longitude = (int)(atof(tmp_str) * 1000);
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m_lon_table[m_cs] = longitude;
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}
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if ((latitude != 0) && (longitude != 0))
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break;
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}
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if ((latitude != 0) && (longitude != 0))
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break;
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}
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sockfd.close();
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gettimeofday(&timeinfo, 0);
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epoch = timeinfo.tv_sec;
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m_time_table[m_cs] = epoch;
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if (latitude == 0 || longitude == 0) {
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m_lat_table[m_cs] = 0;
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m_lon_table[m_cs] = 0;
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LogMessage("GPS Position of %s not found", m_cs.c_str());
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return false;
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}
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else {
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LogMessage("GPS Position of %s Lat: %0.3f, Lon: %0.3f", m_cs.c_str(), (float)latitude / 1000.0, (float)longitude / 1000.0);
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return true;
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}
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}
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bool CAPRSReader::findCall(std::string cs, int *latitude, int *longitude)
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{
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bool not_found = false;
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struct timeval timeinfo;
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unsigned int epoch, tempo;
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try {
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*latitude = m_lat_table.at(cs);
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} catch (...) {
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not_found = true;
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}
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try {
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*longitude = m_lon_table.at(cs);
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} catch (...) {
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not_found = true;
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}
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if (m_new_callsign) {
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if (not_found)
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return false;
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else if ((*latitude != 0) && (*longitude != 0))
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return true;
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else
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return false;
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}
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if (not_found) {
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m_new_callsign = true;
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m_cs = cs;
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return false;
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}
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else {
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gettimeofday(&timeinfo, 0);
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epoch = timeinfo.tv_sec;
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tempo = m_time_table.at(cs);
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if (epoch > (tempo + m_refres_time)) {
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//LogMessage("Location expired");
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m_new_callsign = true;
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m_cs = cs;
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}
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if ((*latitude != 0) && (*longitude != 0))
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return true;
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else
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return false;
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}
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}
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