cli.c

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <getopt.h>
#include <err.h>


#include "cli.h"


int parseInput(int argc, char **argv);
int connectToBackEnd();

int main(int argc, char **argv)
{
	int cmdID = -1;
	if((cmdID = parseInput(argc, argv)) == -1) {
		exit(1);
	}
	int s;
	if((s = connectToBackEnd()) == -1) {
		err(-1, "connectToBackEnd");
	}



    close(s);

    return 0;
}

int connectToBackEnd() {

    int s, t, len;
    struct sockaddr_un remote;
    char str[100];

    if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
        perror("socket");
        exit(1);
    }

    printf("Trying to connect...\n");

    remote.sun_family = AF_UNIX;
    strcpy(remote.sun_path, SOCK_PATH);
    len = strlen(remote.sun_path) + sizeof(remote.sun_family);
    if (connect(s, (struct sockaddr *)&remote, sizeof(remote))  == -1) {
        perror("connect");
        exit(1);
    } else {
		printf("Connected.\n");
    	return s;
    }
}

int parseInput(int argc, char **argv) {
	static int cmdID = -1;
	int c;
	static struct option long_options[] =
	{
		/* These options don’t set a flag. We distinguish them by their indices. */
		{"monitor",     no_argument,       &cmdID, CMD_MONITOR},
		{0, 0, 0, 0}
	};

	while (1)
    {
      
      /* getopt_long stores the option index here. */
      int option_index = 0;

      c = getopt_long (argc, argv, "",
                       long_options, &option_index);

      /* Detect the end of the options. */
      if (c == -1)
        break;
    }
    if(cmdID == -1)
    {
    	printf("Invalid command\n");
    	return cmdID;
    }
    return 0;
}