neighsnoop.c

/* SPDX-License-Identifier: GPL-2.0-or-later */
/* SPDX-FileCopyrightText: 2024 - 1984 Hosting Company <1984@1984.is> */
/* SPDX-FileCopyrightText: 2024 - Freyx Solutions <frey@freyx.com> */
/* SPDX-FileContributor: Freysteinn Alfredsson <freysteinn@freysteinn.com> */
/* SPDX-FileContributor: Julius Thor Bess Rikardsson <juliusbess@gmail.com> */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>

#define SOCKET_PATH "/run/neighsnoopd.sock"
#define BUFFER_SIZE 4096

int main(void)
{
    int client_fd;
    int count;
    struct sockaddr_un addr;
    char buffer[BUFFER_SIZE];

    // Create a UNIX domain socket
    if ((client_fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
        perror("socket");
        exit(EXIT_FAILURE);
    }

    // Set up the socket address
    memset(&addr, 0, sizeof(struct sockaddr_un));
    addr.sun_family = AF_UNIX;
    strncpy(addr.sun_path, SOCKET_PATH, sizeof(addr.sun_path) - 1);

    // Connect to the server
    if (connect(client_fd, (struct sockaddr*)&addr,
                sizeof(struct sockaddr_un)) == -1) {
        perror("connect");
        exit(EXIT_FAILURE);
    }

    // Read the response from the server
    memset(buffer, 0, BUFFER_SIZE);
    while ((count = read(client_fd, buffer, BUFFER_SIZE)) > 0)
        write(STDOUT_FILENO, buffer, count);

    close(client_fd);
    return 0;
}