sfxd/src/sfxc.c

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

int main(int argc, char **argv) {
  struct sockaddr_un sa_server, sa_client;
  int sock_fd;
  static char buffer[BUFFER_SIZE];

  EXPECT(sock_fd = socket(AF_UNIX, SOCK_DGRAM, 0), > 0);

  memset(&sa_server, 0, sizeof(sa_server));
  memset(&sa_client, 0, sizeof(sa_client));

  sa_server.sun_family = sa_client.sun_family = AF_UNIX;
  snprintf(sa_client.sun_path, sizeof(sa_client.sun_path), CLIENT_SOCKET_PATH, (long)getpid());
  strncpy(sa_server.sun_path, DAEMON_SOCKET_PATH, sizeof(sa_server.sun_path) - 1);

  EXPECT(bind(sock_fd, (struct sockaddr *)&sa_client, sizeof(struct sockaddr_un)), == 0);

  for (int i = 1; i < argc; i++) {
    strncat(buffer, argv[i], BUFFER_SIZE - strlen(buffer) - 1);
    if (i != argc - 1) {
      strncat(buffer, " ", BUFFER_SIZE - strlen(buffer) - 1);
    }
  }

  printf("send: '%s'\n", buffer);

  EXPECT(sendto(sock_fd, buffer, strlen(buffer), 0, (struct sockaddr *)&sa_server, sizeof(sa_server)), == strlen(buffer));
  int data_len;
  while ((data_len = recv(sock_fd, buffer, BUFFER_SIZE, 0)) > 0) {
    printf("%.*s", data_len, buffer);
  }

  unlink(sa_client.sun_path);
  exit(EXIT_SUCCESS);
}