126 lines
2.4 KiB
C
126 lines
2.4 KiB
C
/*
|
|
* ----------------------------------------------------------------------------
|
|
* "THE BEER-WARE LICENSE" (Revision 42):
|
|
* <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
|
|
* can do whatever you want with this stuff. If we meet some day, and you think
|
|
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
|
|
* ----------------------------------------------------------------------------
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/sysproto.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/jail.h>
|
|
#include <sys/socket.h>
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
|
|
MALLOC_DEFINE(M_PRISON, "prison", "Prison structures");
|
|
|
|
int
|
|
jail(p, uap)
|
|
struct proc *p;
|
|
struct jail_args /* {
|
|
syscallarg(struct jail *) jail;
|
|
} */ *uap;
|
|
{
|
|
int error;
|
|
struct prison *pr;
|
|
struct jail j;
|
|
struct chroot_args ca;
|
|
|
|
error = suser(p);
|
|
if (error)
|
|
return (error);
|
|
error = copyin(uap->jail, &j, sizeof j);
|
|
if (error)
|
|
return (error);
|
|
MALLOC(pr, struct prison *, sizeof *pr , M_PRISON, M_WAITOK);
|
|
bzero((caddr_t)pr, sizeof *pr);
|
|
error = copyinstr(j.hostname, &pr->pr_host, sizeof pr->pr_host, 0);
|
|
if (error)
|
|
goto bail;
|
|
pr->pr_ip = j.ip_number;
|
|
|
|
ca.path = j.path;
|
|
error = chroot(p, &ca);
|
|
if (error)
|
|
goto bail;
|
|
|
|
pr->pr_ref++;
|
|
p->p_prison = pr;
|
|
p->p_flag |= P_JAILED;
|
|
return (0);
|
|
|
|
bail:
|
|
FREE(pr, M_PRISON);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
prison_ip(struct proc *p, int flag, u_int32_t *ip)
|
|
{
|
|
u_int32_t tmp;
|
|
|
|
if (!p->p_prison)
|
|
return (0);
|
|
if (flag)
|
|
tmp = *ip;
|
|
else
|
|
tmp = ntohl(*ip);
|
|
if (tmp == INADDR_ANY) {
|
|
if (flag)
|
|
*ip = p->p_prison->pr_ip;
|
|
else
|
|
*ip = htonl(p->p_prison->pr_ip);
|
|
return (0);
|
|
}
|
|
if (p->p_prison->pr_ip != tmp)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
prison_remote_ip(struct proc *p, int flag, u_int32_t *ip)
|
|
{
|
|
u_int32_t tmp;
|
|
|
|
if (!p || !p->p_prison)
|
|
return;
|
|
if (flag)
|
|
tmp = *ip;
|
|
else
|
|
tmp = ntohl(*ip);
|
|
if (tmp == 0x7f000001) {
|
|
if (flag)
|
|
*ip = p->p_prison->pr_ip;
|
|
else
|
|
*ip = htonl(p->p_prison->pr_ip);
|
|
return;
|
|
}
|
|
return;
|
|
}
|
|
|
|
int
|
|
prison_if(struct proc *p, struct sockaddr *sa)
|
|
{
|
|
struct sockaddr_in *sai = (struct sockaddr_in*) sa;
|
|
int ok;
|
|
|
|
if (sai->sin_family != AF_INET)
|
|
ok = 0;
|
|
else if (p->p_prison->pr_ip != ntohl(sai->sin_addr.s_addr))
|
|
ok = 1;
|
|
else
|
|
ok = 0;
|
|
return (ok);
|
|
}
|