void syscall_proxy(int sockfd) {
unsigned long remote_sp=0;
int retval = 0, myfd;
struct syscall *sysc;
remote_sp = get_remote_sp(sockfd);
printf("Got remote stack pointer: 0x%.4lx\n", remote_sp);
sysc = build_getid(remote_sp, 0);
retval = send_syscall(sockfd, sysc, 1);
printf("Got return value of: %d from getid(0)\n", retval);
sysc = build_umask(remote_sp, 022);
retval = send_syscall(sockfd, sysc, 1);
printf("Got return value of: %d from umask(022)\n", retval);
sysc = build_mkdir(remote_sp, "/tmp/syscall", 00700);
retval = send_syscall(sockfd, sysc, 1);
printf("Got return value of: %d from mkdir(%s, %o)\n", retval,
"/tmp/syscall", 00700);
sysc = build_open(remote_sp, "/tmp/syscall/passwd",
O_WRONLY|O_CREAT|O_APPEND);
retval = send_syscall(sockfd, sysc, 1);
printf("Got return value of: %d from open(\"/tmp/syscall/passwd\")\n",
retval);
myfd = retval;
sysc = build_write(remote_sp, myfd, "root:*:0:0:Charlie &:/root:/bin/csh",
35);
retval = send_syscall(sockfd, sysc, 1);
printf("Got return value of: %d from write(%d, ...)\n", retval, myfd);
sysc = build_close(remote_sp, myfd);
retval = send_syscall(sockfd, sysc, 1);
printf("Got return value of: %d from close(%d)\n", retval, myfd);
sysc = build_chmod(remote_sp, "/tmp/syscall/passwd", 0644);
retval = send_syscall(sockfd, sysc, 1);
printf("Got return value of: %d from chmod(%s,%o)\n", retval,
"/tmp/syscall/passwd", 0644);
sysc = build_unlink(remote_sp, "/tmp/syscall/passwd");
retval = send_syscall(sockfd, sysc, 1);
printf("Got return value of: %d from unlink(%s)\n", retval,
"/tmp/syscall/passwd");
sysc = build_rmdir(remote_sp, "/tmp/syscall");
retval = send_syscall(sockfd, sysc, 1);
printf("Got return value of: %d from rmdir(%s)\n", retval, "/tmp/syscall");
sysc = build_exit(remote_sp, 5);
retval = send_syscall(sockfd, sysc, 0);
printf("Sent exit() syscall!\n");
}
void check_exit(t_data *d)
{
if (d->line != NULL && d->line != '\0')
{
if ((ft_strequ("exit", d->line) == 1)
&& (d->line[4] == '\0' || d->line[4] == ' '))
{
d->toexec = ft_strtrim(d->line);
build_exit(d);
}
}
}
