client.c

#include <stddef.h>
#include <stdio.h>
#include <signal.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include "client.h"

#define SOCK_PATH "Testing123"
#define BUF_SIZE 255
// Defined a new buffer size constant: BUF_SIZE

int create_connection(const char *filename){
    int sock;
    struct sockaddr_un *me;
    size_t size;
    fprintf(stderr, "Creating socket...\n");
    sock = socket(AF_UNIX, SOCK_STREAM, 0);
    if(sock < 0){
        perror("Socket");
        exit(EXIT_FAILURE);
    }
    fprintf(stderr, "Done!\n"); 
   me->sun_family = AF_LOCAL;
    strncpy(me->sun_path, filename, sizeof(me->sun_path));
    size = offsetof(struct sockaddr_un, sun_path) + strlen(me->sun_path);
    fprintf(stderr, "Attempting to connect to server...\n");
    if(connect(sock, (struct sockaddr *) me, size)){
        perror("Connection");
        exit(EXIT_FAILURE);
    }
    fprintf(stderr, "Done!\n");
    return sock;
}

void write_message(int socket, char * message){
    int bytesWritten = write(socket, message, sizeof(char) * strlen(message));
    if(bytesWritten < 0){
        perror("Write");
    }
}

void clean_up_client(int signal){
    printf("Cleaning up...\n");
    unlink(SOCK_PATH);
    printf("Done!\n");
    exit(EXIT_SUCCESS);
}

int init_client(const char *filepath){
    signal(SIGQUIT, clean_up_client);
    signal(SIGINT, clean_up_client);
    signal(SIGTERM, clean_up_client);
    return create_connection(filepath);
}

int close_client(int socket){
    shutdown(socket, 2);
    unlink(SOCK_PATH);
}

int main(){
    int socket = init_client(SOCK_PATH);
    printf("Client Initialized! Client value: %d\n", socket);
    char *message = malloc(sizeof(char) * BUF_SIZE); // Fixed to allocate memory for the buffer
    while(1){
        memset(message, 0, sizeof(message));
        printf("\nMessage:");
        fgets(message, BUF_SIZE, stdin); // Reads up to the buffer size from the input stream.
        write_message(socket, message);
    }
}