patty/examples/listen.c
2024-03-01 00:20:46 -05:00

129 lines
2.8 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/un.h>
#include <fcntl.h>
#include <errno.h>
#include <patty/ax25.h>
extern char **environ;
static void usage(int argc, char **argv, const char *message, ...) {
if (message != NULL) {
va_list args;
va_start(args, message);
vfprintf(stderr, message, args);
fprintf(stderr, "\n");
va_end(args);
}
fprintf(stderr, "usage: %s /var/run/patty/patty.sock\n", argv[0]);
exit(1);
}
int main(int argc, char **argv) {
struct sockaddr_un unix_addr;
int fd,
local,
remote,
pty;
patty_ax25_addr addr,
peer;
char path[PATTY_AX25_SOCK_PATH_SIZE];
if (argc != 2) {
usage(argc, argv, "No patty socket provided");
}
patty_ax25_pton("KZ3ROX", 0, &addr);
if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) {
fprintf(stderr, "%s: %s: %s: %s\n",
argv[0], "socket()", argv[1], strerror(errno));
goto error_socket;
}
memset(&unix_addr, '\0', sizeof(unix_addr));
unix_addr.sun_family = AF_UNIX;
strncpy(unix_addr.sun_path, argv[1], sizeof(unix_addr.sun_path));
if (connect(fd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
goto error_connect;
}
if ((local = patty_ax25_call_socket(fd, PATTY_AX25_PROTO_NONE, PATTY_AX25_SOCK_STREAM, NULL, 0)) < 0) {
fprintf(stderr, "%s: %s: %s\n",
argv[0], "patty_ax25_call_socket()", strerror(errno));
goto error_call_socket;
}
if (patty_ax25_call_bind(fd, local, &addr) < 0) {
fprintf(stderr, "%s: %s: %s\n",
argv[0], "patty_ax25_call_connect()", strerror(errno));
goto error_call_bind;
}
if (patty_ax25_call_listen(fd, local) < 0) {
fprintf(stderr, "%s: %s: %s\n",
argv[0], "patty_ax25_call_listen()", strerror(errno));
goto error_call_listen;
}
if ((remote = patty_ax25_call_accept(fd, local, &peer, path, sizeof(path))) < 0) {
fprintf(stderr, "%s: %s: %s\n",
argv[0], "patty_ax25_call_accept()", strerror(errno));
goto error_call_accept;
}
if ((pty = open(path, O_RDWR)) < 0) {
goto error_open_pty;
}
if (write(pty, "hello world\n", 12) < 0) {
goto error_write;
}
close(pty);
patty_ax25_call_close(fd, remote);
patty_ax25_call_close(fd, local);
close(fd);
return 0;
error_write:
close(pty);
error_open_pty:
patty_ax25_call_close(fd, remote);
error_call_accept:
error_call_listen:
error_call_bind:
patty_ax25_call_close(fd, local);
error_call_socket:
error_connect:
close(fd);
error_socket:
return 1;
}