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163 lines
3.6 KiB
163 lines
3.6 KiB
/*
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CIRCDDB - ircDDB client library in C++
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Copyright (C) 2010 Michael Dirska, DL1BFF (dl1bff@mdx.de)
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Copyright (c) 2017 by Thomas A. Early N7TAE
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Copyright (c) 2021 by Thomas Geoffrey Merck F4FXL / KC3FRA
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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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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include "IRCReceiver.h"
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#include "Utils.h"
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#include "Log.h"
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IRCReceiver::IRCReceiver(int sock, IRCMessageQueue *q)
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{
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m_sock = sock;
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m_recvQ = q;
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}
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IRCReceiver::~IRCReceiver()
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{
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}
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void IRCReceiver::startWork()
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{
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m_terminateThread = false;
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m_future = std::async(std::launch::async, &IRCReceiver::Entry, this);
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}
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void IRCReceiver::stopWork()
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{
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m_terminateThread = true;
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m_future.get();
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}
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static int doRead(int sock, char *buf, int buf_size)
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{
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struct timeval tv;
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tv.tv_sec = 1;
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tv.tv_usec = 0;
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fd_set rdset;
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fd_set errset;
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FD_ZERO(&rdset);
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FD_ZERO(&errset);
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FD_SET(sock, &rdset);
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FD_SET(sock, &errset);
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int res = select(sock+1, &rdset, NULL, &errset, &tv);
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if (res < 0) {
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CLog::logInfo("IRCReceiver::doRead: select\n");
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return -1;
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} else if (res > 0) {
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if (FD_ISSET(sock, &errset)) {
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CLog::logInfo("IRCReceiver::doRead: select (FD_ISSET(sock, exceptfds))\n");
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return -1;
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}
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if (FD_ISSET(sock, &rdset)) {
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res = recv(sock, buf, buf_size, 0);
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if (res < 0) {
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CLog::logInfo("IRCReceiver::doRead: read\n");
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return -1;
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} else if (res == 0) {
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CLog::logInfo("IRCReceiver::doRead: EOF read==0\n");
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return -1;
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} else
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return res;
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}
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}
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return 0;
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}
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void IRCReceiver::Entry()
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{
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IRCMessage *m = new IRCMessage();
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int state = 0;
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while (! m_terminateThread) {
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char buf[200];
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int r = doRead(m_sock, buf, sizeof buf);
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if (r < 0) {
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m_recvQ->signalEOF();
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delete m; // delete unfinished IRCMessage
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break;
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}
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for (int i=0; i < r; i++) {
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char b = buf[i];
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if (b > 0) {
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if (b == '\n') {
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m_recvQ->putMessage(m);
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m = new IRCMessage();
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state = 0;
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}
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else if (b != '\r') {
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switch (state) {
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case 0: // command
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if (b == ':')
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state = 1; // m_prefix
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else if (b != ' ') {
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m->m_command.push_back(b);
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state = 2; // command
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}
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break;
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case 1: // m_prefix
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if (b == ' ')
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state = 2; // command is next
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else
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m->m_prefix.push_back(b);
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break;
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case 2:
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if (b == ' ') {
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state = 3; // params are next
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m->m_numParams = 1;
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m->m_params.push_back(std::string(""));
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} else
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m->m_command.push_back(b);
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break;
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case 3:
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if (b == ' ') {
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m->m_numParams++;
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if (m->m_numParams >= 15)
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state = 5; // ignore the rest
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m->m_params.push_back(std::string(""));
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} else if (b==':' && m->m_params[m->m_numParams-1].size()==0)
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state = 4; // rest of line is this param
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else
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m->m_params[m->m_numParams-1].push_back(b);
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break;
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case 4:
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m->m_params[m->m_numParams-1].push_back(b);
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break;
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} // switch
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}
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} // if
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} // for
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} // while
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return;
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}
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