iPDC-suite/iPDC/connections.h

110 lines
3.1 KiB
C
Executable File

/* -----------------------------------------------------------------------------
* connections.h
*
* iPDC - Phasor Data Concentrator
*
* Copyright (C) 2011 Nitesh Pandit
* Copyright (C) 2011 Kedar V. Khandeparkar
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Authors:
* Nitesh Pandit <panditnitesh@gmail.com>
* Kedar V. Khandeparkar <kedar.khandeparkar@gmail.com>
*
* ----------------------------------------------------------------------------- */
#include <netinet/in.h>
#include <signal.h>
/* ---------------------------------------------------------------- */
/* global variable */
/* ---------------------------------------------------------------- */
#define DBPORT 9000 /* The port users will be connecting to */
#define BACKLOG 10 /* How many pending connections queue will hold */
#define MAXBUFLEN 2000
int UL_UDP_addr_len,UL_TCP_sin_size, numbytes;
unsigned char UL_udp_command[19];
unsigned char UL_tcp_command[19];
/* ---------------------------------------------------------------- */
/* global Data Structure */
/* ---------------------------------------------------------------- */
struct sigaction sa;
struct Lower_Layer_Details {
unsigned int pmuid;
char ip[16];
int port;
char protocol[4];
int sockfd;
int up; /* used only in tcp */
struct sockaddr_in llpmu_addr;
pthread_t thread_id;
int data_transmission_off;
int pmu_remove;
int request_cfg_frame;
struct Lower_Layer_Details *next;
struct Lower_Layer_Details *prev;
}*LLfirst,*LLlast;
struct Upper_Layer_Details {
char ip[16];
int port;
char protocol[4];
int sockfd;
int tcpup;
pthread_t thread_id;
struct sockaddr_in pdc_addr;
int config_change;
int UL_upper_pdc_cfgsent;
int UL_data_transmission_off;
int address_set;
struct Upper_Layer_Details *next;
struct Upper_Layer_Details *prev;
}*ULfirst,*ULlast;
/* ---------------------------------------------------------------- */
/* Function prototypes */
/* ---------------------------------------------------------------- */
void setup();
void* UL_tcp();
void* UL_tcp_connection(void * newfd);
void* UL_udp();
void PMU_process_UDP(unsigned char *,struct sockaddr_in,int sockfd);
void PMU_process_TCP(unsigned char tcp_buffer[],int sockfd);
void sigchld_handler(int s); /* TCP signal handler */
/**************************************** End of File *******************************************************/