150 lines
4.3 KiB
C++
150 lines
4.3 KiB
C++
/*
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This software is part of libcsdr, a set of simple DSP routines for
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Software Defined Radio.
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Copyright (c) 2014, Andras Retzler <randras@sdr.hu>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the copyright holder nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL ANDRAS RETZLER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "ddcd.h"
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#include <signal.h>
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#include <stdio.h>
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#include <getopt.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <iostream>
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#include <vector>
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#include <unistd.h>
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#define SOFTWARE_NAME "ddcd"
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#define MSG_START SOFTWARE_NAME ": "
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typedef struct client_s
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{
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struct sockaddr_in addr;
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int socket;
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pid_t pid;
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int pipefd[2];
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} client_t;
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int host_port = 0;
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char host_address[100] = "127.0.0.1";
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int decimation = 0;
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int main(int argc, char* argv[])
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{
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int c;
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for(;;)
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{
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int option_index = 0;
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static struct option long_options[] = {
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{"port", required_argument, 0, 'p' },
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{"address", required_argument, 0, 'a' },
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{"decimation", required_argument, 0, 'd' }
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};
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c = getopt_long(argc, argv, "p:a:d:", long_options, &option_index);
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if(c==-1) break;
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switch (c)
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{
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case 'a':
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host_address[100-1]=0;
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strncpy(host_address,optarg,100-1);
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break;
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case 'p':
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host_port=atoi(optarg);
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break;
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case 'd':
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decimation=atoi(optarg);
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break;
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case 0:
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case '?':
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case ':':
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default:
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printf(" 0%o ??\n", c);
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}
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}
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if(!decimation) { fprintf(stderr, MSG_START "missing required command line argument, --decimation.\n"); exit(1); }
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if(!host_port) { fprintf(stderr, MSG_START "missing required command line argument, --port.\n"); exit(1); }
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struct sockaddr_in addr_host;
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int listen_socket;
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std::vector<client_t*> clients(10);
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listen_socket=socket(AF_INET,SOCK_STREAM,0);
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memset(&addr_host,'0',sizeof(addr_host));
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addr_host.sin_family=AF_INET;
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addr_host.sin_port=htons(host_port);
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if( (addr_host.sin_addr.s_addr=inet_addr(host_address)) == INADDR_NONE)
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{ fprintf(stderr, MSG_START "invalid host address.\n"); exit(1); }
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if( bind(listen_socket, (struct sockaddr*) &addr_host, sizeof(addr_host)) < 0)
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{ fprintf(stderr, MSG_START "cannot bind() address to the socket.\n"); exit(1); }
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if( listen(listen_socket, 10) == -1)
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{ fprintf(stderr, MSG_START "cannot listen() on socket.\n"); exit(1); }
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for(;;)
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{
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struct sockaddr_in addr_cli;
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socklen_t addr_cli_len;
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int new_socket;
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if( (new_socket = accept(listen_socket, (struct sockaddr*)&addr_cli, &addr_cli_len)) == -1)
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{
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fprintf(stderr, MSG_START "cannot accept() a connection.\n");
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continue;
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}
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client_t* new_client = new client_t;
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memcpy(&new_client->addr, &addr_cli, sizeof(new_client->addr));
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new_client->socket = new_socket;
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if(new_client->pid = fork())
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{
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//We're the parent
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clients.push_back(new_client);
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printf("client pid: %d\n", new_client->pid);
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}
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else
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{
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//We're the client
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client();
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break;
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}
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}
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return 0;
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}
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void client()
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{
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printf("I'm the client\n");
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for(;;) sleep(1);
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}
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