fanout.c

/*
   A simple server in the internet domain using TCP
   MIT Licensed
*/

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ctype.h>
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <time.h>
#include <getopt.h>
#include <stdarg.h>
#include <limits.h>
#include <sys/resource.h>
#include <errno.h>
#include <sys/epoll.h>


struct client
{
    int fd;
    char *input_buffer;
    char *output_buffer;
    struct client *next;
    struct client *previous;
};


struct channel
{
    char *name;
    struct channel *next;
    struct channel *previous;
    u_int subscription_count;
};


struct subscription
{
    struct client *client;
    struct channel *channel;
    struct subscription *next;
    struct subscription *previous;
};


int is_numeric (char *str);
int strcpos (const char *haystack, const char c);
char *substr (const char *s, int start, int stop);
void str_swap_free (char **target, char *source);
char *str_append (char *target, const char *data);
void clear_socket_buffer (int sock);
void fanout_error (const char *msg);
void fanout_debug (int level, const char *format, ...);
char *getsocketpeername (int fd);