3 |
* |
* |
4 |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
5 |
* |
* |
6 |
* Version: 1.7.0-pre 2009/08/08 |
* Version: 1.7.0-pre 2009/08/24 |
7 |
* |
* |
8 |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
9 |
* See README.ccs for ChangeLog. |
* See README.ccs for ChangeLog. |
34 |
const char *operation, const char *address, |
const char *operation, const char *address, |
35 |
const u16 port, const bool is_granted) |
const u16 port, const bool is_granted) |
36 |
{ |
{ |
37 |
if (!is_granted && ccs_verbose_mode(r->domain)) |
if (!is_granted) |
38 |
printk(KERN_WARNING "%s: %s to %s %u denied for %s\n", |
ccs_warn_log(r, "%s %s %u", operation, address, port); |
|
ccs_get_msg(r->mode == 3), operation, address, port, |
|
|
ccs_get_last_name(r->domain)); |
|
39 |
return ccs_write_audit_log(is_granted, r, CCS_KEYWORD_ALLOW_NETWORK |
return ccs_write_audit_log(is_granted, r, CCS_KEYWORD_ALLOW_NETWORK |
40 |
"%s %s %u\n", operation, address, port); |
"%s %s %u\n", operation, address, port); |
41 |
} |
} |
84 |
} |
} |
85 |
|
|
86 |
#if !defined(NIP6) |
#if !defined(NIP6) |
87 |
#define NIP6(addr) \ |
#define NIP6(addr) \ |
88 |
ntohs((addr).s6_addr16[0]), ntohs((addr).s6_addr16[1]), \ |
ntohs((addr).s6_addr16[0]), ntohs((addr).s6_addr16[1]), \ |
89 |
ntohs((addr).s6_addr16[2]), ntohs((addr).s6_addr16[3]), \ |
ntohs((addr).s6_addr16[2]), ntohs((addr).s6_addr16[3]), \ |
90 |
ntohs((addr).s6_addr16[4]), ntohs((addr).s6_addr16[5]), \ |
ntohs((addr).s6_addr16[4]), ntohs((addr).s6_addr16[5]), \ |
91 |
ntohs((addr).s6_addr16[6]), ntohs((addr).s6_addr16[7]) |
ntohs((addr).s6_addr16[6]), ntohs((addr).s6_addr16[7]) |
92 |
#endif |
#endif |
93 |
|
|
94 |
/** |
/** |
159 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
160 |
*/ |
*/ |
161 |
static int ccs_network_entry2(const bool is_ipv6, const u8 operation, |
static int ccs_network_entry2(const bool is_ipv6, const u8 operation, |
162 |
const u32 *address, const u16 port) |
const u32 *address, const u16 port) |
163 |
{ |
{ |
164 |
struct ccs_request_info r; |
struct ccs_request_info r; |
165 |
struct ccs_acl_info *ptr; |
struct ccs_acl_info *ptr; |
166 |
const char *keyword = ccs_net2keyword(operation); |
const char *keyword = ccs_net2keyword(operation); |
|
bool is_enforce; |
|
167 |
const u16 perm = 1 << operation; |
const u16 perm = 1 << operation; |
168 |
/* using host byte order to allow u32 comparison than memcmp().*/ |
/* using host byte order to allow u32 comparison than memcmp().*/ |
169 |
const u32 ip = ntohl(*address); |
const u32 ip = ntohl(*address); |
170 |
int error; |
int error; |
171 |
char buf[64]; |
char buf[64]; |
172 |
ccs_assert_read_lock(); |
ccs_assert_read_lock(); |
173 |
if (!ccs_can_sleep() || |
if (ccs_init_request_info(&r, NULL, |
174 |
!ccs_init_request_info(&r, NULL, CCS_MAC_NETWORK)) |
CCS_MAC_NETWORK_UDP_BIND + operation) |
175 |
|
== CCS_MAC_MODE_DISABLED) |
176 |
return 0; |
return 0; |
|
is_enforce = (r.mode == 3); |
|
|
retry: |
|
|
error = -EPERM; |
|
|
list_for_each_entry_rcu(ptr, &r.domain->acl_info_list, list) { |
|
|
struct ccs_ip_network_acl *acl; |
|
|
if (ptr->is_deleted || ptr->type != CCS_TYPE_IP_NETWORK_ACL) |
|
|
continue; |
|
|
acl = container_of(ptr, struct ccs_ip_network_acl, head); |
|
|
if (!(acl->perm & perm)) |
|
|
continue; |
|
|
if (!ccs_compare_number_union(port, &acl->port) || |
|
|
!ccs_condition(&r, ptr)) |
|
|
continue; |
|
|
if (acl->address_type == CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP) { |
|
|
if (!ccs_address_matches_group(is_ipv6, address, |
|
|
acl->address.group)) |
|
|
continue; |
|
|
} else if (acl->address_type == CCS_IP_ADDRESS_TYPE_IPv4) { |
|
|
if (is_ipv6 || |
|
|
ip < acl->address.ipv4.min || |
|
|
acl->address.ipv4.max < ip) |
|
|
continue; |
|
|
} else { |
|
|
if (!is_ipv6 || |
|
|
memcmp(acl->address.ipv6.min, address, 16) > 0 || |
|
|
memcmp(address, acl->address.ipv6.max, 16) > 0) |
|
|
continue; |
|
|
} |
|
|
r.cond = ptr->cond; |
|
|
error = 0; |
|
|
break; |
|
|
} |
|
177 |
memset(buf, 0, sizeof(buf)); |
memset(buf, 0, sizeof(buf)); |
178 |
if (is_ipv6) |
if (is_ipv6) |
179 |
ccs_print_ipv6(buf, sizeof(buf), |
ccs_print_ipv6(buf, sizeof(buf), (const struct in6_addr *) |
180 |
(const struct in6_addr *) address); |
address); |
181 |
else |
else |
182 |
snprintf(buf, sizeof(buf) - 1, "%u.%u.%u.%u", HIPQUAD(ip)); |
snprintf(buf, sizeof(buf) - 1, "%u.%u.%u.%u", HIPQUAD(ip)); |
183 |
ccs_audit_network_log(&r, keyword, buf, port, !error); |
do { |
184 |
if (error) |
error = -EPERM; |
185 |
|
list_for_each_entry_rcu(ptr, &r.domain->acl_info_list, list) { |
186 |
|
struct ccs_ip_network_acl *acl; |
187 |
|
if (ptr->is_deleted || |
188 |
|
ptr->type != CCS_TYPE_IP_NETWORK_ACL) |
189 |
|
continue; |
190 |
|
acl = container_of(ptr, struct ccs_ip_network_acl, |
191 |
|
head); |
192 |
|
if (!(acl->perm & perm)) |
193 |
|
continue; |
194 |
|
if (!ccs_compare_number_union(port, &acl->port) || |
195 |
|
!ccs_condition(&r, ptr)) |
196 |
|
continue; |
197 |
|
switch (acl->address_type) { |
198 |
|
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
199 |
|
if (!ccs_address_matches_group(is_ipv6, |
200 |
|
address, |
201 |
|
acl->address. |
202 |
|
group)) |
203 |
|
continue; |
204 |
|
break; |
205 |
|
case CCS_IP_ADDRESS_TYPE_IPv4: |
206 |
|
if (is_ipv6 || ip < acl->address.ipv4.min || |
207 |
|
acl->address.ipv4.max < ip) |
208 |
|
continue; |
209 |
|
break; |
210 |
|
default: |
211 |
|
if (!is_ipv6 || |
212 |
|
memcmp(acl->address.ipv6.min, address, 16) |
213 |
|
> 0 || |
214 |
|
memcmp(address, acl->address.ipv6.max, 16) |
215 |
|
> 0) |
216 |
|
continue; |
217 |
|
break; |
218 |
|
} |
219 |
|
r.cond = ptr->cond; |
220 |
|
error = 0; |
221 |
|
break; |
222 |
|
} |
223 |
|
ccs_audit_network_log(&r, keyword, buf, port, !error); |
224 |
|
if (!error) |
225 |
|
break; |
226 |
error = ccs_supervisor(&r, CCS_KEYWORD_ALLOW_NETWORK |
error = ccs_supervisor(&r, CCS_KEYWORD_ALLOW_NETWORK |
227 |
"%s %s %u\n", keyword, buf, port); |
"%s %s %u\n", keyword, buf, port); |
228 |
if (error == 1) |
} while (error == 1); |
229 |
goto retry; |
if (r.mode != CCS_MAC_MODE_ENFORCING) |
|
if (!is_enforce) |
|
230 |
error = 0; |
error = 0; |
231 |
return error; |
return error; |
232 |
} |
} |
242 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
243 |
*/ |
*/ |
244 |
static int ccs_network_entry(const bool is_ipv6, const u8 operation, |
static int ccs_network_entry(const bool is_ipv6, const u8 operation, |
245 |
const u32 *address, const u16 port) |
const u32 *address, const u16 port) |
246 |
{ |
{ |
247 |
const int idx = ccs_read_lock(); |
const int idx = ccs_read_lock(); |
248 |
const int error = ccs_network_entry2(is_ipv6, operation, |
const int error = ccs_network_entry2(is_ipv6, operation, |
249 |
address, port); |
address, port); |
250 |
ccs_read_unlock(idx); |
ccs_read_unlock(idx); |
251 |
return error; |
return error; |
252 |
} |
} |
329 |
case 1: |
case 1: |
330 |
e.address_type = CCS_IP_ADDRESS_TYPE_IPv4; |
e.address_type = CCS_IP_ADDRESS_TYPE_IPv4; |
331 |
/* use host byte order to allow u32 comparison.*/ |
/* use host byte order to allow u32 comparison.*/ |
332 |
e.address.ipv4.min = ntohl(* (u32 *) min_address); |
e.address.ipv4.min = ntohl(*(u32 *) min_address); |
333 |
e.address.ipv4.max = ntohl(* (u32 *) max_address); |
e.address.ipv4.max = ntohl(*(u32 *) max_address); |
334 |
break; |
break; |
335 |
default: |
default: |
336 |
if (w[2][0] != '@') |
if (w[2][0] != '@') |
396 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
397 |
*/ |
*/ |
398 |
static inline int ccs_network_listen_acl(const bool is_ipv6, |
static inline int ccs_network_listen_acl(const bool is_ipv6, |
399 |
const u8 *address, |
const u8 *address, |
400 |
const u16 port) |
const u16 port) |
401 |
{ |
{ |
402 |
return ccs_network_entry(is_ipv6, CCS_NETWORK_TCP_LISTEN, |
return ccs_network_entry(is_ipv6, CCS_NETWORK_TCP_LISTEN, |
403 |
(const u32 *) address, ntohs(port)); |
(const u32 *) address, ntohs(port)); |
404 |
} |
} |
405 |
|
|
406 |
/** |
/** |
414 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
415 |
*/ |
*/ |
416 |
static inline int ccs_network_connect_acl(const bool is_ipv6, |
static inline int ccs_network_connect_acl(const bool is_ipv6, |
417 |
const int sock_type, |
const int sock_type, |
418 |
const u8 *address, |
const u8 *address, |
419 |
const u16 port) |
const u16 port) |
420 |
{ |
{ |
421 |
u8 operation; |
u8 operation; |
422 |
switch (sock_type) { |
switch (sock_type) { |
430 |
operation = CCS_NETWORK_RAW_CONNECT; |
operation = CCS_NETWORK_RAW_CONNECT; |
431 |
} |
} |
432 |
return ccs_network_entry(is_ipv6, operation, |
return ccs_network_entry(is_ipv6, operation, |
433 |
(const u32 *) address, ntohs(port)); |
(const u32 *) address, ntohs(port)); |
434 |
} |
} |
435 |
|
|
436 |
/** |
/** |
444 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
445 |
*/ |
*/ |
446 |
static int ccs_network_bind_acl(const bool is_ipv6, const int sock_type, |
static int ccs_network_bind_acl(const bool is_ipv6, const int sock_type, |
447 |
const u8 *address, const u16 port) |
const u8 *address, const u16 port) |
448 |
{ |
{ |
449 |
u8 operation; |
u8 operation; |
450 |
switch (sock_type) { |
switch (sock_type) { |
458 |
operation = CCS_NETWORK_RAW_BIND; |
operation = CCS_NETWORK_RAW_BIND; |
459 |
} |
} |
460 |
return ccs_network_entry(is_ipv6, operation, |
return ccs_network_entry(is_ipv6, operation, |
461 |
(const u32 *) address, ntohs(port)); |
(const u32 *) address, ntohs(port)); |
462 |
} |
} |
463 |
|
|
464 |
/** |
/** |
471 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
472 |
*/ |
*/ |
473 |
static inline int ccs_network_accept_acl(const bool is_ipv6, |
static inline int ccs_network_accept_acl(const bool is_ipv6, |
474 |
const u8 *address, |
const u8 *address, |
475 |
const u16 port) |
const u16 port) |
476 |
{ |
{ |
477 |
int retval; |
int retval; |
478 |
current->ccs_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
current->ccs_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
479 |
retval = ccs_network_entry(is_ipv6, CCS_NETWORK_TCP_ACCEPT, |
retval = ccs_network_entry(is_ipv6, CCS_NETWORK_TCP_ACCEPT, |
480 |
(const u32 *) address, ntohs(port)); |
(const u32 *) address, ntohs(port)); |
481 |
current->ccs_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
current->ccs_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
482 |
return retval; |
return retval; |
483 |
} |
} |
493 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
494 |
*/ |
*/ |
495 |
static inline int ccs_network_sendmsg_acl(const bool is_ipv6, |
static inline int ccs_network_sendmsg_acl(const bool is_ipv6, |
496 |
const int sock_type, |
const int sock_type, |
497 |
const u8 *address, |
const u8 *address, |
498 |
const u16 port) |
const u16 port) |
499 |
{ |
{ |
500 |
u8 operation; |
u8 operation; |
501 |
if (sock_type == SOCK_DGRAM) |
if (sock_type == SOCK_DGRAM) |
503 |
else |
else |
504 |
operation = CCS_NETWORK_RAW_CONNECT; |
operation = CCS_NETWORK_RAW_CONNECT; |
505 |
return ccs_network_entry(is_ipv6, operation, |
return ccs_network_entry(is_ipv6, operation, |
506 |
(const u32 *) address, ntohs(port)); |
(const u32 *) address, ntohs(port)); |
507 |
} |
} |
508 |
|
|
509 |
/** |
/** |
517 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
518 |
*/ |
*/ |
519 |
static inline int ccs_network_recvmsg_acl(const bool is_ipv6, |
static inline int ccs_network_recvmsg_acl(const bool is_ipv6, |
520 |
const int sock_type, |
const int sock_type, |
521 |
const u8 *address, |
const u8 *address, |
522 |
const u16 port) |
const u16 port) |
523 |
{ |
{ |
524 |
int retval; |
int retval; |
525 |
const u8 operation |
const u8 operation |
527 |
CCS_NETWORK_UDP_CONNECT : CCS_NETWORK_RAW_CONNECT; |
CCS_NETWORK_UDP_CONNECT : CCS_NETWORK_RAW_CONNECT; |
528 |
current->ccs_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
current->ccs_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
529 |
retval = ccs_network_entry(is_ipv6, operation, |
retval = ccs_network_entry(is_ipv6, operation, |
530 |
(const u32 *) address, ntohs(port)); |
(const u32 *) address, ntohs(port)); |
531 |
current->ccs_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
current->ccs_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
532 |
return retval; |
return retval; |
533 |
} |
} |
592 |
case AF_INET6: |
case AF_INET6: |
593 |
addr6 = (struct sockaddr_in6 *) addr; |
addr6 = (struct sockaddr_in6 *) addr; |
594 |
error = ccs_network_listen_acl(true, |
error = ccs_network_listen_acl(true, |
595 |
addr6->sin6_addr.s6_addr, |
addr6->sin6_addr.s6_addr, |
596 |
addr6->sin6_port); |
addr6->sin6_port); |
597 |
break; |
break; |
598 |
case AF_INET: |
case AF_INET: |
599 |
addr4 = (struct sockaddr_in *) addr; |
addr4 = (struct sockaddr_in *) addr; |
600 |
error = ccs_network_listen_acl(false, |
error = ccs_network_listen_acl(false, |
601 |
(u8 *) &addr4->sin_addr, |
(u8 *) &addr4->sin_addr, |
602 |
addr4->sin_port); |
addr4->sin_port); |
603 |
break; |
break; |
604 |
} |
} |
605 |
return error; |
return error; |
635 |
else |
else |
636 |
port = htons(sock->sk->sk_protocol); |
port = htons(sock->sk->sk_protocol); |
637 |
error = ccs_network_connect_acl(true, type, |
error = ccs_network_connect_acl(true, type, |
638 |
addr6->sin6_addr.s6_addr, |
addr6->sin6_addr.s6_addr, |
639 |
port); |
port); |
640 |
break; |
break; |
641 |
case AF_INET: |
case AF_INET: |
642 |
if (addr_len < sizeof(struct sockaddr_in)) |
if (addr_len < sizeof(struct sockaddr_in)) |
647 |
else |
else |
648 |
port = htons(sock->sk->sk_protocol); |
port = htons(sock->sk->sk_protocol); |
649 |
error = ccs_network_connect_acl(false, type, |
error = ccs_network_connect_acl(false, type, |
650 |
(u8 *) &addr4->sin_addr, |
(u8 *) &addr4->sin_addr, |
651 |
port); |
port); |
652 |
break; |
break; |
653 |
} |
} |
654 |
if (type != SOCK_STREAM) |
if (type != SOCK_STREAM) |
693 |
else |
else |
694 |
port = htons(sock->sk->sk_protocol); |
port = htons(sock->sk->sk_protocol); |
695 |
error = ccs_network_bind_acl(true, type, |
error = ccs_network_bind_acl(true, type, |
696 |
addr6->sin6_addr.s6_addr, |
addr6->sin6_addr.s6_addr, |
697 |
port); |
port); |
698 |
break; |
break; |
699 |
case AF_INET: |
case AF_INET: |
700 |
if (addr_len < sizeof(struct sockaddr_in)) |
if (addr_len < sizeof(struct sockaddr_in)) |
705 |
else |
else |
706 |
port = htons(sock->sk->sk_protocol); |
port = htons(sock->sk->sk_protocol); |
707 |
error = ccs_network_bind_acl(false, type, |
error = ccs_network_bind_acl(false, type, |
708 |
(u8 *) &addr4->sin_addr, |
(u8 *) &addr4->sin_addr, |
709 |
port); |
port); |
710 |
break; |
break; |
711 |
} |
} |
712 |
return error; |
return error; |
740 |
case AF_INET6: |
case AF_INET6: |
741 |
addr6 = (struct sockaddr_in6 *) addr; |
addr6 = (struct sockaddr_in6 *) addr; |
742 |
error = ccs_network_accept_acl(true, |
error = ccs_network_accept_acl(true, |
743 |
addr6->sin6_addr.s6_addr, |
addr6->sin6_addr.s6_addr, |
744 |
addr6->sin6_port); |
addr6->sin6_port); |
745 |
break; |
break; |
746 |
case AF_INET: |
case AF_INET: |
747 |
addr4 = (struct sockaddr_in *) addr; |
addr4 = (struct sockaddr_in *) addr; |
748 |
error = ccs_network_accept_acl(false, |
error = ccs_network_accept_acl(false, |
749 |
(u8 *) &addr4->sin_addr, |
(u8 *) &addr4->sin_addr, |
750 |
addr4->sin_port); |
addr4->sin_port); |
751 |
break; |
break; |
752 |
} |
} |
753 |
return error; |
return error; |
777 |
else |
else |
778 |
port = htons(sock->sk->sk_protocol); |
port = htons(sock->sk->sk_protocol); |
779 |
error = ccs_network_sendmsg_acl(true, type, |
error = ccs_network_sendmsg_acl(true, type, |
780 |
addr6->sin6_addr.s6_addr, |
addr6->sin6_addr.s6_addr, |
781 |
port); |
port); |
782 |
break; |
break; |
783 |
case AF_INET: |
case AF_INET: |
784 |
if (addr_len < sizeof(struct sockaddr_in)) |
if (addr_len < sizeof(struct sockaddr_in)) |
789 |
else |
else |
790 |
port = htons(sock->sk->sk_protocol); |
port = htons(sock->sk->sk_protocol); |
791 |
error = ccs_network_sendmsg_acl(false, type, |
error = ccs_network_sendmsg_acl(false, type, |
792 |
(u8 *) &addr4->sin_addr, |
(u8 *) &addr4->sin_addr, |
793 |
port); |
port); |
794 |
break; |
break; |
795 |
} |
} |
796 |
return error; |
return error; |
889 |
port = htons(sk->sk_protocol); |
port = htons(sk->sk_protocol); |
890 |
} |
} |
891 |
error = ccs_network_recvmsg_acl(true, type, |
error = ccs_network_recvmsg_acl(true, type, |
892 |
(u8 *) &sin6, port); |
(u8 *) &sin6, port); |
893 |
break; |
break; |
894 |
case PF_INET: |
case PF_INET: |
895 |
if (type == SOCK_DGRAM) { /* UDP IPv4 */ |
if (type == SOCK_DGRAM) { /* UDP IPv4 */ |
900 |
port = htons(sk->sk_protocol); |
port = htons(sk->sk_protocol); |
901 |
} |
} |
902 |
error = ccs_network_recvmsg_acl(false, type, |
error = ccs_network_recvmsg_acl(false, type, |
903 |
(u8 *) &sin4, port); |
(u8 *) &sin4, port); |
904 |
break; |
break; |
905 |
} |
} |
906 |
if (!error) |
if (!error) |