object new_user_connection(string first_line) {
if(!AUTHORIZED())
error("Can't call function! Not authorized!");
if(!find_object(GAME_USER))
compile_object(GAME_USER);
return clone_object(GAME_USER);
}
string get_sitebanned_message(object connection) {
if(!AUTHORIZED())
error("Can't call function! Not authorized!");
return sitebanned_message;
}
int site_is_banned(string ip_address) {
if(!AUTHORIZED())
error("Can't call function! Not authorized!");
return 0;
}
/*
* Sends a signal to a process or a process group.
*/
PUBLIC int sys_kill(pid_t pid, int sig)
{
int err;
struct process *p;
/* Invalid signal. */
if ((sig < 0) || (sig > NR_SIGNALS - 1))
return (-EINVAL);
err = -ESRCH;
/* Send signal to process. */
if (pid > 0)
{
/* Search for process. */
for (p = FIRST_PROC; p <= LAST_PROC; p++)
{
/* Skip invalid processes. */
if (!IS_VALID(p))
continue;
/* Found. */
if (pid == p->pid)
{
err = -EPERM;
if (AUTHORIZED(curr_proc, p, sig))
{
err = 0;
sndsig(p, sig);
}
}
}
}
/* Send signal to process group. */
else if (pid == 0)
{
/* Search for processes. */
for (p = FIRST_PROC; p <= LAST_PROC; p++)
{
/* Skip invalid processes. */
if (!IS_VALID(p))
continue;
/* Found. */
if (curr_proc->pgrp == p->pgrp)
{
err = -EPERM;
if (AUTHORIZED(curr_proc, p, sig))
{
err = 0;
sndsig(p, sig);
}
}
}
}
/* Send signal to all processes. */
else if (pid == -1)
{
err = -EPERM;
/* Search for processes. */
for (p = FIRST_PROC; p <= LAST_PROC; p++)
{
/* Skip invalid processes. */
if (!IS_VALID(p))
continue;
if (AUTHORIZED(curr_proc, p, sig))
{
err = 0;
sndsig(p, sig);
}
}
}
/* Send signal to absolute proces group. */
else
{
/* Search for processes. */
for (p = FIRST_PROC; p <= LAST_PROC; p++)
{
/* Skip invalid processes. */
if (!IS_VALID(p))
continue;
/* Found. */
if (p->pgrp->pid == -pid)
{
err = -EPERM;
if (AUTHORIZED(curr_proc, p, sig))
{
err = 0;
sndsig(p, sig);
}
}
}
}
return (err);
}
