1 |
kumaneko |
111 |
/* |
2 |
|
|
* fs/tomoyo_network.c |
3 |
|
|
* |
4 |
|
|
* Implementation of the Domain-Based Mandatory Access Control. |
5 |
|
|
* |
6 |
kumaneko |
2030 |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
7 |
kumaneko |
111 |
* |
8 |
kumaneko |
2002 |
* Version: 1.6.6-pre 2008/12/24 |
9 |
kumaneko |
111 |
* |
10 |
|
|
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
11 |
|
|
* See README.ccs for ChangeLog. |
12 |
|
|
* |
13 |
|
|
*/ |
14 |
|
|
|
15 |
|
|
#include <linux/ccs_common.h> |
16 |
|
|
#include <linux/tomoyo.h> |
17 |
|
|
#include <linux/realpath.h> |
18 |
kumaneko |
1084 |
#include <linux/net.h> |
19 |
|
|
#include <linux/inet.h> |
20 |
|
|
#include <linux/in.h> |
21 |
|
|
#include <linux/in6.h> |
22 |
kumaneko |
111 |
|
23 |
kumaneko |
1052 |
/** |
24 |
kumaneko |
2002 |
* ccs_audit_network_log - Audit network log. |
25 |
kumaneko |
1052 |
* |
26 |
kumaneko |
1657 |
* @r: Pointer to "struct ccs_request_info". |
27 |
kumaneko |
1052 |
* @operation: The name of operation. |
28 |
|
|
* @address: An IPv4 or IPv6 address. |
29 |
|
|
* @port: Port number. |
30 |
|
|
* @is_granted: True if this is a granted log. |
31 |
|
|
* |
32 |
|
|
* Returns 0 on success, negative value otherwise. |
33 |
|
|
*/ |
34 |
kumaneko |
2002 |
static int ccs_audit_network_log(struct ccs_request_info *r, |
35 |
|
|
const char *operation, const char *address, |
36 |
|
|
const u16 port, const bool is_granted) |
37 |
kumaneko |
111 |
{ |
38 |
kumaneko |
1657 |
return ccs_write_audit_log(is_granted, r, KEYWORD_ALLOW_NETWORK |
39 |
|
|
"%s %s %u\n", operation, address, port); |
40 |
kumaneko |
111 |
} |
41 |
|
|
|
42 |
kumaneko |
1052 |
/** |
43 |
kumaneko |
2002 |
* ccs_save_ipv6_address - Keep the given IPv6 address on the RAM. |
44 |
kumaneko |
1052 |
* |
45 |
|
|
* @addr: Pointer to "struct in6_addr". |
46 |
|
|
* |
47 |
|
|
* Returns pointer to "struct in6_addr" on success, NULL otherwise. |
48 |
|
|
* |
49 |
|
|
* The RAM is shared, so NEVER try to modify or kfree() the returned address. |
50 |
|
|
*/ |
51 |
kumaneko |
2002 |
static const struct in6_addr *ccs_save_ipv6_address(const struct in6_addr *addr) |
52 |
kumaneko |
719 |
{ |
53 |
kumaneko |
2002 |
static const u8 ccs_block_size = 16; |
54 |
|
|
struct ccs_addr_list { |
55 |
kumaneko |
1438 |
/* Workaround for gcc 4.3's bug. */ |
56 |
kumaneko |
2002 |
struct in6_addr addr[16]; /* = ccs_block_size */ |
57 |
kumaneko |
731 |
struct list1_head list; |
58 |
kumaneko |
719 |
u32 in_use_count; |
59 |
|
|
}; |
60 |
kumaneko |
2002 |
static LIST1_HEAD(ccs_address_list); |
61 |
|
|
struct ccs_addr_list *ptr; |
62 |
kumaneko |
719 |
static DEFINE_MUTEX(lock); |
63 |
kumaneko |
2002 |
u8 i = ccs_block_size; |
64 |
kumaneko |
1052 |
if (!addr) |
65 |
|
|
return NULL; |
66 |
kumaneko |
719 |
mutex_lock(&lock); |
67 |
kumaneko |
2002 |
list1_for_each_entry(ptr, &ccs_address_list, list) { |
68 |
kumaneko |
719 |
for (i = 0; i < ptr->in_use_count; i++) { |
69 |
kumaneko |
1064 |
if (!memcmp(&ptr->addr[i], addr, sizeof(*addr))) |
70 |
kumaneko |
1052 |
goto ok; |
71 |
kumaneko |
719 |
} |
72 |
kumaneko |
2002 |
if (i < ccs_block_size) |
73 |
kumaneko |
1052 |
break; |
74 |
kumaneko |
719 |
} |
75 |
kumaneko |
2002 |
if (i == ccs_block_size) { |
76 |
kumaneko |
1052 |
ptr = ccs_alloc_element(sizeof(*ptr)); |
77 |
|
|
if (!ptr) |
78 |
|
|
goto ok; |
79 |
kumaneko |
2002 |
list1_add_tail_mb(&ptr->list, &ccs_address_list); |
80 |
kumaneko |
719 |
i = 0; |
81 |
|
|
} |
82 |
kumaneko |
731 |
ptr->addr[ptr->in_use_count++] = *addr; |
83 |
kumaneko |
1052 |
ok: |
84 |
kumaneko |
719 |
mutex_unlock(&lock); |
85 |
|
|
return ptr ? &ptr->addr[i] : NULL; |
86 |
|
|
} |
87 |
|
|
|
88 |
kumaneko |
2002 |
/* The list for "struct ccs_address_group_entry". */ |
89 |
|
|
static LIST1_HEAD(ccs_address_group_list); |
90 |
kumaneko |
111 |
|
91 |
kumaneko |
1052 |
/** |
92 |
kumaneko |
2002 |
* ccs_update_address_group_entry - Update "struct ccs_address_group_entry" list. |
93 |
kumaneko |
1052 |
* |
94 |
kumaneko |
1064 |
* @group_name: The name of address group. |
95 |
|
|
* @is_ipv6: True if @min_address and @max_address are IPv6 addresses. |
96 |
kumaneko |
1052 |
* @min_address: Start of IPv4 or IPv6 address range. |
97 |
|
|
* @max_address: End of IPv4 or IPv6 address range. |
98 |
|
|
* @is_delete: True if it is a delete request. |
99 |
|
|
* |
100 |
|
|
* Returns 0 on success, negative value otherwise. |
101 |
|
|
*/ |
102 |
kumaneko |
2002 |
static int ccs_update_address_group_entry(const char *group_name, |
103 |
|
|
const bool is_ipv6, |
104 |
|
|
const u16 *min_address, |
105 |
|
|
const u16 *max_address, |
106 |
|
|
const bool is_delete) |
107 |
kumaneko |
111 |
{ |
108 |
kumaneko |
652 |
static DEFINE_MUTEX(lock); |
109 |
kumaneko |
2002 |
struct ccs_address_group_entry *new_group; |
110 |
|
|
struct ccs_address_group_entry *group; |
111 |
|
|
struct ccs_address_group_member *new_member; |
112 |
|
|
struct ccs_address_group_member *member; |
113 |
|
|
const struct ccs_path_info *saved_group_name; |
114 |
kumaneko |
1052 |
const struct in6_addr *saved_min_address = NULL; |
115 |
|
|
const struct in6_addr *saved_max_address = NULL; |
116 |
kumaneko |
111 |
int error = -ENOMEM; |
117 |
kumaneko |
1016 |
bool found = false; |
118 |
kumaneko |
1052 |
if (!ccs_is_correct_path(group_name, 0, 0, 0, __func__) || |
119 |
|
|
!group_name[0]) |
120 |
|
|
return -EINVAL; |
121 |
|
|
saved_group_name = ccs_save_name(group_name); |
122 |
|
|
if (!saved_group_name) |
123 |
|
|
return -ENOMEM; |
124 |
|
|
if (!is_ipv6) |
125 |
|
|
goto not_ipv6; |
126 |
|
|
saved_min_address |
127 |
kumaneko |
2002 |
= ccs_save_ipv6_address((struct in6_addr *) min_address); |
128 |
kumaneko |
1052 |
saved_max_address |
129 |
kumaneko |
2002 |
= ccs_save_ipv6_address((struct in6_addr *) max_address); |
130 |
kumaneko |
1052 |
if (!saved_min_address || !saved_max_address) |
131 |
|
|
return -ENOMEM; |
132 |
|
|
not_ipv6: |
133 |
kumaneko |
652 |
mutex_lock(&lock); |
134 |
kumaneko |
2002 |
list1_for_each_entry(group, &ccs_address_group_list, list) { |
135 |
kumaneko |
1052 |
if (saved_group_name != group->group_name) |
136 |
|
|
continue; |
137 |
kumaneko |
2002 |
list1_for_each_entry(member, |
138 |
|
|
&group->address_group_member_list, |
139 |
kumaneko |
1052 |
list) { |
140 |
|
|
if (member->is_ipv6 != is_ipv6) |
141 |
|
|
continue; |
142 |
kumaneko |
111 |
if (is_ipv6) { |
143 |
kumaneko |
1052 |
if (member->min.ipv6 != saved_min_address || |
144 |
|
|
member->max.ipv6 != saved_max_address) |
145 |
|
|
continue; |
146 |
kumaneko |
111 |
} else { |
147 |
kumaneko |
1052 |
if (member->min.ipv4 != *(u32 *) min_address || |
148 |
|
|
member->max.ipv4 != *(u32 *) max_address) |
149 |
|
|
continue; |
150 |
kumaneko |
111 |
} |
151 |
|
|
member->is_deleted = is_delete; |
152 |
|
|
error = 0; |
153 |
|
|
goto out; |
154 |
|
|
} |
155 |
kumaneko |
1016 |
found = true; |
156 |
kumaneko |
111 |
break; |
157 |
|
|
} |
158 |
|
|
if (is_delete) { |
159 |
|
|
error = -ENOENT; |
160 |
|
|
goto out; |
161 |
|
|
} |
162 |
kumaneko |
708 |
if (!found) { |
163 |
kumaneko |
1052 |
new_group = ccs_alloc_element(sizeof(*new_group)); |
164 |
|
|
if (!new_group) |
165 |
|
|
goto out; |
166 |
kumaneko |
722 |
INIT_LIST1_HEAD(&new_group->address_group_member_list); |
167 |
kumaneko |
111 |
new_group->group_name = saved_group_name; |
168 |
kumaneko |
2002 |
list1_add_tail_mb(&new_group->list, &ccs_address_group_list); |
169 |
kumaneko |
111 |
group = new_group; |
170 |
|
|
} |
171 |
kumaneko |
1052 |
new_member = ccs_alloc_element(sizeof(*new_member)); |
172 |
|
|
if (!new_member) |
173 |
|
|
goto out; |
174 |
kumaneko |
111 |
new_member->is_ipv6 = is_ipv6; |
175 |
|
|
if (is_ipv6) { |
176 |
kumaneko |
719 |
new_member->min.ipv6 = saved_min_address; |
177 |
|
|
new_member->max.ipv6 = saved_max_address; |
178 |
kumaneko |
111 |
} else { |
179 |
kumaneko |
1052 |
new_member->min.ipv4 = *(u32 *) min_address; |
180 |
|
|
new_member->max.ipv4 = *(u32 *) max_address; |
181 |
kumaneko |
111 |
} |
182 |
kumaneko |
2002 |
list1_add_tail_mb(&new_member->list, |
183 |
|
|
&group->address_group_member_list); |
184 |
kumaneko |
111 |
error = 0; |
185 |
|
|
out: |
186 |
kumaneko |
652 |
mutex_unlock(&lock); |
187 |
kumaneko |
1064 |
ccs_update_counter(CCS_UPDATES_COUNTER_EXCEPTION_POLICY); |
188 |
kumaneko |
111 |
return error; |
189 |
|
|
} |
190 |
|
|
|
191 |
kumaneko |
1052 |
/** |
192 |
kumaneko |
2002 |
* ccs_parse_ip_address - Parse an IP address. |
193 |
kumaneko |
1657 |
* |
194 |
|
|
* @address: String to parse. |
195 |
|
|
* @min: Pointer to store min address. |
196 |
|
|
* @max: Pointer to store max address. |
197 |
|
|
* |
198 |
|
|
* Returns 2 if @address is an IPv6, 1 if @address is an IPv4, 0 otherwise. |
199 |
|
|
*/ |
200 |
kumaneko |
2002 |
static int ccs_parse_ip_address(char *address, u16 *min, u16 *max) |
201 |
kumaneko |
1657 |
{ |
202 |
|
|
int count = sscanf(address, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx" |
203 |
|
|
"-%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx", |
204 |
|
|
&min[0], &min[1], &min[2], &min[3], |
205 |
|
|
&min[4], &min[5], &min[6], &min[7], |
206 |
|
|
&max[0], &max[1], &max[2], &max[3], |
207 |
|
|
&max[4], &max[5], &max[6], &max[7]); |
208 |
|
|
if (count == 8 || count == 16) { |
209 |
|
|
u8 i; |
210 |
|
|
if (count == 8) |
211 |
|
|
memmove(max, min, sizeof(u16) * 8); |
212 |
|
|
for (i = 0; i < 8; i++) { |
213 |
|
|
min[i] = htons(min[i]); |
214 |
|
|
max[i] = htons(max[i]); |
215 |
|
|
} |
216 |
|
|
return 2; |
217 |
|
|
} |
218 |
|
|
count = sscanf(address, "%hu.%hu.%hu.%hu-%hu.%hu.%hu.%hu", |
219 |
|
|
&min[0], &min[1], &min[2], &min[3], |
220 |
|
|
&max[0], &max[1], &max[2], &max[3]); |
221 |
|
|
if (count == 4 || count == 8) { |
222 |
kumaneko |
1658 |
u32 ip = htonl((((u8) min[0]) << 24) + (((u8) min[1]) << 16) |
223 |
|
|
+ (((u8) min[2]) << 8) + (u8) min[3]); |
224 |
|
|
memmove(min, &ip, sizeof(ip)); |
225 |
|
|
if (count == 8) |
226 |
|
|
ip = htonl((((u8) max[0]) << 24) + (((u8) max[1]) << 16) |
227 |
|
|
+ (((u8) max[2]) << 8) + (u8) max[3]); |
228 |
|
|
memmove(max, &ip, sizeof(ip)); |
229 |
kumaneko |
1657 |
return 1; |
230 |
|
|
} |
231 |
|
|
return 0; |
232 |
|
|
} |
233 |
|
|
|
234 |
|
|
/** |
235 |
kumaneko |
2002 |
* ccs_write_address_group_policy - Write "struct ccs_address_group_entry" list. |
236 |
kumaneko |
1052 |
* |
237 |
|
|
* @data: String to parse. |
238 |
|
|
* @is_delete: True if it is a delete request. |
239 |
|
|
* |
240 |
|
|
* Returns 0 on success, negative value otherwise. |
241 |
|
|
*/ |
242 |
|
|
int ccs_write_address_group_policy(char *data, const bool is_delete) |
243 |
kumaneko |
111 |
{ |
244 |
kumaneko |
853 |
bool is_ipv6; |
245 |
kumaneko |
1064 |
u16 min_address[8]; |
246 |
|
|
u16 max_address[8]; |
247 |
kumaneko |
111 |
char *cp = strchr(data, ' '); |
248 |
kumaneko |
1052 |
if (!cp) |
249 |
|
|
return -EINVAL; |
250 |
kumaneko |
111 |
*cp++ = '\0'; |
251 |
kumaneko |
2002 |
switch (ccs_parse_ip_address(cp, min_address, max_address)) { |
252 |
kumaneko |
1657 |
case 2: |
253 |
kumaneko |
1016 |
is_ipv6 = true; |
254 |
kumaneko |
1657 |
break; |
255 |
|
|
case 1: |
256 |
kumaneko |
1016 |
is_ipv6 = false; |
257 |
kumaneko |
1657 |
break; |
258 |
|
|
default: |
259 |
|
|
return -EINVAL; |
260 |
kumaneko |
111 |
} |
261 |
kumaneko |
2002 |
return ccs_update_address_group_entry(data, is_ipv6, min_address, |
262 |
|
|
max_address, is_delete); |
263 |
kumaneko |
111 |
} |
264 |
|
|
|
265 |
kumaneko |
1052 |
/** |
266 |
kumaneko |
2002 |
* ccs_find_or_assign_new_address_group - Create address group. |
267 |
kumaneko |
1052 |
* |
268 |
kumaneko |
1064 |
* @group_name: The name of address group. |
269 |
kumaneko |
1052 |
* |
270 |
kumaneko |
2002 |
* Returns pointer to "struct ccs_address_group_entry" on success, |
271 |
|
|
* NULL otherwise. |
272 |
kumaneko |
1052 |
*/ |
273 |
kumaneko |
2002 |
static struct ccs_address_group_entry * |
274 |
|
|
ccs_find_or_assign_new_address_group(const char *group_name) |
275 |
kumaneko |
111 |
{ |
276 |
kumaneko |
853 |
u8 i; |
277 |
kumaneko |
2002 |
struct ccs_address_group_entry *group; |
278 |
kumaneko |
111 |
for (i = 0; i <= 1; i++) { |
279 |
kumaneko |
2002 |
list1_for_each_entry(group, &ccs_address_group_list, list) { |
280 |
kumaneko |
1064 |
if (!strcmp(group_name, group->group_name->name)) |
281 |
kumaneko |
1052 |
return group; |
282 |
kumaneko |
111 |
} |
283 |
kumaneko |
1064 |
if (!i) { |
284 |
kumaneko |
111 |
const u16 dummy[2] = { 0, 0 }; |
285 |
kumaneko |
2002 |
ccs_update_address_group_entry(group_name, false, |
286 |
|
|
dummy, dummy, false); |
287 |
|
|
ccs_update_address_group_entry(group_name, false, |
288 |
|
|
dummy, dummy, true); |
289 |
kumaneko |
111 |
} |
290 |
|
|
} |
291 |
|
|
return NULL; |
292 |
|
|
} |
293 |
|
|
|
294 |
kumaneko |
1052 |
/** |
295 |
kumaneko |
2002 |
* ccs_address_matches_to_group - Check whether the given address matches members of the given address group. |
296 |
kumaneko |
1052 |
* |
297 |
|
|
* @is_ipv6: True if @address is an IPv6 address. |
298 |
|
|
* @address: An IPv4 or IPv6 address. |
299 |
kumaneko |
2002 |
* @group: Pointer to "struct ccs_address_group_entry". |
300 |
kumaneko |
1052 |
* |
301 |
|
|
* Returns true if @address matches addresses in @group group, false otherwise. |
302 |
|
|
*/ |
303 |
kumaneko |
2002 |
static bool ccs_address_matches_to_group(const bool is_ipv6, const u32 *address, |
304 |
|
|
const struct ccs_address_group_entry * |
305 |
|
|
group) |
306 |
kumaneko |
111 |
{ |
307 |
kumaneko |
2002 |
struct ccs_address_group_member *member; |
308 |
kumaneko |
111 |
const u32 ip = ntohl(*address); |
309 |
kumaneko |
2002 |
list1_for_each_entry(member, &group->address_group_member_list, |
310 |
|
|
list) { |
311 |
kumaneko |
1052 |
if (member->is_deleted) |
312 |
|
|
continue; |
313 |
kumaneko |
111 |
if (member->is_ipv6) { |
314 |
kumaneko |
1052 |
if (is_ipv6 && |
315 |
|
|
memcmp(member->min.ipv6, address, 16) <= 0 && |
316 |
|
|
memcmp(address, member->max.ipv6, 16) <= 0) |
317 |
|
|
return true; |
318 |
kumaneko |
111 |
} else { |
319 |
kumaneko |
1052 |
if (!is_ipv6 && |
320 |
|
|
member->min.ipv4 <= ip && ip <= member->max.ipv4) |
321 |
|
|
return true; |
322 |
kumaneko |
111 |
} |
323 |
|
|
} |
324 |
kumaneko |
1016 |
return false; |
325 |
kumaneko |
111 |
} |
326 |
|
|
|
327 |
kumaneko |
1052 |
/** |
328 |
kumaneko |
2002 |
* ccs_read_address_group_policy - Read "struct ccs_address_group_entry" list. |
329 |
kumaneko |
1052 |
* |
330 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
331 |
|
|
* |
332 |
|
|
* Returns true on success, false otherwise. |
333 |
|
|
*/ |
334 |
|
|
bool ccs_read_address_group_policy(struct ccs_io_buffer *head) |
335 |
kumaneko |
111 |
{ |
336 |
kumaneko |
722 |
struct list1_head *gpos; |
337 |
|
|
struct list1_head *mpos; |
338 |
kumaneko |
2002 |
list1_for_each_cookie(gpos, head->read_var1, &ccs_address_group_list) { |
339 |
|
|
struct ccs_address_group_entry *group; |
340 |
|
|
group = list1_entry(gpos, struct ccs_address_group_entry, list); |
341 |
kumaneko |
1052 |
list1_for_each_cookie(mpos, head->read_var2, |
342 |
|
|
&group->address_group_member_list) { |
343 |
kumaneko |
708 |
char buf[128]; |
344 |
kumaneko |
2002 |
struct ccs_address_group_member *member; |
345 |
|
|
member = list1_entry(mpos, |
346 |
|
|
struct ccs_address_group_member, |
347 |
kumaneko |
1052 |
list); |
348 |
|
|
if (member->is_deleted) |
349 |
|
|
continue; |
350 |
kumaneko |
1064 |
if (member->is_ipv6) { |
351 |
kumaneko |
1052 |
const struct in6_addr *min_address |
352 |
|
|
= member->min.ipv6; |
353 |
|
|
const struct in6_addr *max_address |
354 |
|
|
= member->max.ipv6; |
355 |
|
|
ccs_print_ipv6(buf, sizeof(buf), min_address); |
356 |
kumaneko |
719 |
if (min_address != max_address) { |
357 |
kumaneko |
1052 |
int len; |
358 |
kumaneko |
1795 |
char *cp = buf + strlen(buf); |
359 |
kumaneko |
708 |
*cp++ = '-'; |
360 |
kumaneko |
1052 |
len = strlen(buf); |
361 |
|
|
ccs_print_ipv6(cp, sizeof(buf) - len, |
362 |
|
|
max_address); |
363 |
kumaneko |
111 |
} |
364 |
kumaneko |
708 |
} else { |
365 |
kumaneko |
1052 |
const u32 min_address = member->min.ipv4; |
366 |
|
|
const u32 max_address = member->max.ipv4; |
367 |
kumaneko |
708 |
memset(buf, 0, sizeof(buf)); |
368 |
kumaneko |
1052 |
snprintf(buf, sizeof(buf) - 1, "%u.%u.%u.%u", |
369 |
|
|
HIPQUAD(min_address)); |
370 |
kumaneko |
708 |
if (min_address != max_address) { |
371 |
|
|
const int len = strlen(buf); |
372 |
kumaneko |
1052 |
snprintf(buf + len, |
373 |
|
|
sizeof(buf) - 1 - len, |
374 |
|
|
"-%u.%u.%u.%u", |
375 |
|
|
HIPQUAD(max_address)); |
376 |
kumaneko |
708 |
} |
377 |
kumaneko |
111 |
} |
378 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ADDRESS_GROUP |
379 |
|
|
"%s %s\n", group->group_name->name, |
380 |
|
|
buf)) |
381 |
|
|
goto out; |
382 |
kumaneko |
111 |
} |
383 |
|
|
} |
384 |
kumaneko |
1052 |
return true; |
385 |
|
|
out: |
386 |
|
|
return false; |
387 |
kumaneko |
111 |
} |
388 |
|
|
|
389 |
kumaneko |
719 |
#if !defined(NIP6) |
390 |
kumaneko |
1052 |
#define NIP6(addr) \ |
391 |
kumaneko |
1056 |
ntohs((addr).s6_addr16[0]), ntohs((addr).s6_addr16[1]), \ |
392 |
|
|
ntohs((addr).s6_addr16[2]), ntohs((addr).s6_addr16[3]), \ |
393 |
|
|
ntohs((addr).s6_addr16[4]), ntohs((addr).s6_addr16[5]), \ |
394 |
|
|
ntohs((addr).s6_addr16[6]), ntohs((addr).s6_addr16[7]) |
395 |
kumaneko |
719 |
#endif |
396 |
|
|
|
397 |
kumaneko |
1052 |
/** |
398 |
kumaneko |
1054 |
* ccs_print_ipv6 - Print an IPv6 address. |
399 |
kumaneko |
1052 |
* |
400 |
|
|
* @buffer: Buffer to write to. |
401 |
kumaneko |
1064 |
* @buffer_len: Size of @buffer. |
402 |
kumaneko |
1052 |
* @ip: Pointer to "struct in6_addr". |
403 |
|
|
* |
404 |
kumaneko |
1064 |
* Returns nothing. |
405 |
kumaneko |
1052 |
*/ |
406 |
kumaneko |
1064 |
void ccs_print_ipv6(char *buffer, const int buffer_len, |
407 |
|
|
const struct in6_addr *ip) |
408 |
kumaneko |
111 |
{ |
409 |
|
|
memset(buffer, 0, buffer_len); |
410 |
kumaneko |
719 |
snprintf(buffer, buffer_len - 1, "%x:%x:%x:%x:%x:%x:%x:%x", NIP6(*ip)); |
411 |
kumaneko |
111 |
} |
412 |
|
|
|
413 |
kumaneko |
1052 |
/** |
414 |
|
|
* ccs_net2keyword - Convert network operation index to network operation name. |
415 |
|
|
* |
416 |
|
|
* @operation: Type of operation. |
417 |
|
|
* |
418 |
|
|
* Returns the name of operation. |
419 |
|
|
*/ |
420 |
|
|
const char *ccs_net2keyword(const u8 operation) |
421 |
kumaneko |
111 |
{ |
422 |
|
|
const char *keyword = "unknown"; |
423 |
|
|
switch (operation) { |
424 |
|
|
case NETWORK_ACL_UDP_BIND: |
425 |
|
|
keyword = "UDP bind"; |
426 |
|
|
break; |
427 |
|
|
case NETWORK_ACL_UDP_CONNECT: |
428 |
|
|
keyword = "UDP connect"; |
429 |
|
|
break; |
430 |
|
|
case NETWORK_ACL_TCP_BIND: |
431 |
|
|
keyword = "TCP bind"; |
432 |
|
|
break; |
433 |
|
|
case NETWORK_ACL_TCP_LISTEN: |
434 |
|
|
keyword = "TCP listen"; |
435 |
|
|
break; |
436 |
|
|
case NETWORK_ACL_TCP_CONNECT: |
437 |
|
|
keyword = "TCP connect"; |
438 |
|
|
break; |
439 |
|
|
case NETWORK_ACL_TCP_ACCEPT: |
440 |
|
|
keyword = "TCP accept"; |
441 |
|
|
break; |
442 |
|
|
case NETWORK_ACL_RAW_BIND: |
443 |
|
|
keyword = "RAW bind"; |
444 |
|
|
break; |
445 |
|
|
case NETWORK_ACL_RAW_CONNECT: |
446 |
|
|
keyword = "RAW connect"; |
447 |
|
|
break; |
448 |
|
|
} |
449 |
|
|
return keyword; |
450 |
|
|
} |
451 |
|
|
|
452 |
kumaneko |
1052 |
/** |
453 |
kumaneko |
2002 |
* ccs_update_network_entry - Update "struct ccs_ip_network_acl_record" list. |
454 |
kumaneko |
1052 |
* |
455 |
|
|
* @operation: Type of operation. |
456 |
|
|
* @record_type: Type of address. |
457 |
kumaneko |
2002 |
* @group: Pointer to "struct ccs_address_group_entry". May be NULL. |
458 |
kumaneko |
1052 |
* @min_address: Start of IPv4 or IPv6 address range. |
459 |
|
|
* @max_address: End of IPv4 or IPv6 address range. |
460 |
|
|
* @min_port: Start of port number range. |
461 |
|
|
* @max_port: End of port number range. |
462 |
|
|
* @domain: Pointer to "struct domain_info". |
463 |
kumaneko |
2002 |
* @condition: Pointer to "struct ccs_condition_list". May be NULL. |
464 |
kumaneko |
1052 |
* @is_delete: True if it is a delete request. |
465 |
|
|
* |
466 |
|
|
* Returns 0 on success, negative value otherwise. |
467 |
|
|
*/ |
468 |
kumaneko |
2002 |
static int ccs_update_network_entry(const u8 operation, const u8 record_type, |
469 |
|
|
const struct ccs_address_group_entry *group, |
470 |
|
|
const u32 *min_address, |
471 |
|
|
const u32 *max_address, |
472 |
|
|
const u16 min_port, const u16 max_port, |
473 |
|
|
struct domain_info *domain, |
474 |
|
|
const struct ccs_condition_list *condition, |
475 |
|
|
const bool is_delete) |
476 |
kumaneko |
111 |
{ |
477 |
kumaneko |
1695 |
static DEFINE_MUTEX(lock); |
478 |
kumaneko |
2002 |
struct ccs_acl_info *ptr; |
479 |
|
|
struct ccs_ip_network_acl_record *acl; |
480 |
kumaneko |
111 |
int error = -ENOMEM; |
481 |
kumaneko |
1052 |
/* using host byte order to allow u32 comparison than memcmp().*/ |
482 |
|
|
const u32 min_ip = ntohl(*min_address); |
483 |
|
|
const u32 max_ip = ntohl(*max_address); |
484 |
|
|
const struct in6_addr *saved_min_address = NULL; |
485 |
|
|
const struct in6_addr *saved_max_address = NULL; |
486 |
|
|
if (!domain) |
487 |
|
|
return -EINVAL; |
488 |
|
|
if (record_type != IP_RECORD_TYPE_IPv6) |
489 |
|
|
goto not_ipv6; |
490 |
kumaneko |
2002 |
saved_min_address = ccs_save_ipv6_address((struct in6_addr *) |
491 |
|
|
min_address); |
492 |
|
|
saved_max_address = ccs_save_ipv6_address((struct in6_addr *) |
493 |
|
|
max_address); |
494 |
kumaneko |
1052 |
if (!saved_min_address || !saved_max_address) |
495 |
|
|
return -ENOMEM; |
496 |
|
|
not_ipv6: |
497 |
kumaneko |
1695 |
mutex_lock(&lock); |
498 |
kumaneko |
1052 |
if (is_delete) |
499 |
|
|
goto delete; |
500 |
|
|
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
501 |
kumaneko |
1064 |
if (ccs_acl_type1(ptr) != TYPE_IP_NETWORK_ACL) |
502 |
kumaneko |
1052 |
continue; |
503 |
|
|
if (ccs_get_condition_part(ptr) != condition) |
504 |
|
|
continue; |
505 |
kumaneko |
2002 |
acl = container_of(ptr, struct ccs_ip_network_acl_record, head); |
506 |
kumaneko |
1052 |
if (acl->operation_type != operation || |
507 |
|
|
acl->record_type != record_type || |
508 |
|
|
acl->min_port != min_port || max_port != acl->max_port) |
509 |
|
|
continue; |
510 |
kumaneko |
708 |
if (record_type == IP_RECORD_TYPE_ADDRESS_GROUP) { |
511 |
kumaneko |
1052 |
if (acl->u.group != group) |
512 |
|
|
continue; |
513 |
kumaneko |
708 |
} else if (record_type == IP_RECORD_TYPE_IPv4) { |
514 |
kumaneko |
1052 |
if (acl->u.ipv4.min != min_ip || |
515 |
|
|
max_ip != acl->u.ipv4.max) |
516 |
|
|
continue; |
517 |
|
|
} else if (record_type == IP_RECORD_TYPE_IPv6) { |
518 |
|
|
if (acl->u.ipv6.min != saved_min_address || |
519 |
|
|
saved_max_address != acl->u.ipv6.max) |
520 |
|
|
continue; |
521 |
kumaneko |
708 |
} |
522 |
kumaneko |
1052 |
error = ccs_add_domain_acl(NULL, ptr); |
523 |
|
|
goto out; |
524 |
|
|
} |
525 |
|
|
/* Not found. Append it to the tail. */ |
526 |
|
|
acl = ccs_alloc_acl_element(TYPE_IP_NETWORK_ACL, condition); |
527 |
|
|
if (!acl) |
528 |
|
|
goto out; |
529 |
|
|
acl->operation_type = operation; |
530 |
|
|
acl->record_type = record_type; |
531 |
|
|
if (record_type == IP_RECORD_TYPE_ADDRESS_GROUP) { |
532 |
|
|
acl->u.group = group; |
533 |
|
|
} else if (record_type == IP_RECORD_TYPE_IPv4) { |
534 |
|
|
acl->u.ipv4.min = min_ip; |
535 |
|
|
acl->u.ipv4.max = max_ip; |
536 |
kumaneko |
111 |
} else { |
537 |
kumaneko |
1052 |
acl->u.ipv6.min = saved_min_address; |
538 |
|
|
acl->u.ipv6.max = saved_max_address; |
539 |
|
|
} |
540 |
|
|
acl->min_port = min_port; |
541 |
|
|
acl->max_port = max_port; |
542 |
|
|
error = ccs_add_domain_acl(domain, &acl->head); |
543 |
|
|
goto out; |
544 |
|
|
delete: |
545 |
|
|
error = -ENOENT; |
546 |
|
|
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
547 |
kumaneko |
1064 |
if (ccs_acl_type2(ptr) != TYPE_IP_NETWORK_ACL) |
548 |
kumaneko |
1052 |
continue; |
549 |
|
|
if (ccs_get_condition_part(ptr) != condition) |
550 |
|
|
continue; |
551 |
kumaneko |
2002 |
acl = container_of(ptr, struct ccs_ip_network_acl_record, head); |
552 |
kumaneko |
1052 |
if (acl->operation_type != operation || |
553 |
|
|
acl->record_type != record_type || |
554 |
|
|
acl->min_port != min_port || max_port != acl->max_port) |
555 |
|
|
continue; |
556 |
|
|
if (record_type == IP_RECORD_TYPE_ADDRESS_GROUP) { |
557 |
|
|
if (acl->u.group != group) |
558 |
|
|
continue; |
559 |
|
|
} else if (record_type == IP_RECORD_TYPE_IPv4) { |
560 |
|
|
if (acl->u.ipv4.min != min_ip || |
561 |
|
|
max_ip != acl->u.ipv4.max) |
562 |
|
|
continue; |
563 |
|
|
} else if (record_type == IP_RECORD_TYPE_IPv6) { |
564 |
|
|
if (acl->u.ipv6.min != saved_min_address || |
565 |
|
|
saved_max_address != acl->u.ipv6.max) |
566 |
|
|
continue; |
567 |
kumaneko |
111 |
} |
568 |
kumaneko |
1052 |
error = ccs_del_domain_acl(ptr); |
569 |
|
|
break; |
570 |
kumaneko |
111 |
} |
571 |
kumaneko |
1052 |
out: |
572 |
kumaneko |
1695 |
mutex_unlock(&lock); |
573 |
kumaneko |
111 |
return error; |
574 |
|
|
} |
575 |
|
|
|
576 |
kumaneko |
1052 |
/** |
577 |
kumaneko |
2002 |
* ccs_check_network_entry - Check permission for network operation. |
578 |
kumaneko |
1052 |
* |
579 |
|
|
* @is_ipv6: True if @address is an IPv6 address. |
580 |
|
|
* @operation: Type of operation. |
581 |
|
|
* @address: An IPv4 or IPv6 address. |
582 |
|
|
* @port: Port number. |
583 |
|
|
* |
584 |
|
|
* Returns 0 on success, negative value otherwise. |
585 |
|
|
*/ |
586 |
kumaneko |
2002 |
static int ccs_check_network_entry(const bool is_ipv6, const u8 operation, |
587 |
|
|
const u32 *address, const u16 port) |
588 |
kumaneko |
111 |
{ |
589 |
kumaneko |
1657 |
struct ccs_request_info r; |
590 |
kumaneko |
2002 |
struct ccs_acl_info *ptr; |
591 |
kumaneko |
1052 |
const char *keyword = ccs_net2keyword(operation); |
592 |
kumaneko |
1657 |
bool is_enforce; |
593 |
kumaneko |
1052 |
/* using host byte order to allow u32 comparison than memcmp().*/ |
594 |
|
|
const u32 ip = ntohl(*address); |
595 |
kumaneko |
1016 |
bool found = false; |
596 |
kumaneko |
1064 |
char buf[64]; |
597 |
kumaneko |
1657 |
if (!ccs_can_sleep()) |
598 |
kumaneko |
1052 |
return 0; |
599 |
kumaneko |
1657 |
ccs_init_request_info(&r, NULL, CCS_TOMOYO_MAC_FOR_NETWORK); |
600 |
|
|
is_enforce = (r.mode == 3); |
601 |
|
|
if (!r.mode) |
602 |
|
|
return 0; |
603 |
kumaneko |
2002 |
retry: |
604 |
kumaneko |
1657 |
list1_for_each_entry(ptr, &r.domain->acl_info_list, list) { |
605 |
kumaneko |
2002 |
struct ccs_ip_network_acl_record *acl; |
606 |
kumaneko |
1064 |
if (ccs_acl_type2(ptr) != TYPE_IP_NETWORK_ACL) |
607 |
kumaneko |
1052 |
continue; |
608 |
kumaneko |
2002 |
acl = container_of(ptr, struct ccs_ip_network_acl_record, head); |
609 |
kumaneko |
1052 |
if (acl->operation_type != operation || port < acl->min_port || |
610 |
kumaneko |
1657 |
acl->max_port < port || !ccs_check_condition(&r, ptr)) |
611 |
kumaneko |
1052 |
continue; |
612 |
kumaneko |
708 |
if (acl->record_type == IP_RECORD_TYPE_ADDRESS_GROUP) { |
613 |
kumaneko |
2002 |
if (!ccs_address_matches_to_group(is_ipv6, address, |
614 |
|
|
acl->u.group)) |
615 |
kumaneko |
1052 |
continue; |
616 |
kumaneko |
708 |
} else if (acl->record_type == IP_RECORD_TYPE_IPv4) { |
617 |
kumaneko |
1052 |
if (is_ipv6 || |
618 |
|
|
ip < acl->u.ipv4.min || acl->u.ipv4.max < ip) |
619 |
|
|
continue; |
620 |
kumaneko |
111 |
} else { |
621 |
kumaneko |
1052 |
if (!is_ipv6 || |
622 |
|
|
memcmp(acl->u.ipv6.min, address, 16) > 0 || |
623 |
|
|
memcmp(address, acl->u.ipv6.max, 16) > 0) |
624 |
|
|
continue; |
625 |
kumaneko |
111 |
} |
626 |
kumaneko |
1782 |
r.cond = ccs_get_condition_part(ptr); |
627 |
kumaneko |
1016 |
found = true; |
628 |
kumaneko |
708 |
break; |
629 |
kumaneko |
111 |
} |
630 |
kumaneko |
1064 |
memset(buf, 0, sizeof(buf)); |
631 |
|
|
if (is_ipv6) |
632 |
|
|
ccs_print_ipv6(buf, sizeof(buf), |
633 |
|
|
(const struct in6_addr *) address); |
634 |
|
|
else |
635 |
|
|
snprintf(buf, sizeof(buf) - 1, "%u.%u.%u.%u", HIPQUAD(ip)); |
636 |
kumaneko |
2002 |
ccs_audit_network_log(&r, keyword, buf, port, found); |
637 |
kumaneko |
1052 |
if (found) |
638 |
|
|
return 0; |
639 |
kumaneko |
1657 |
if (ccs_verbose_mode(r.domain)) |
640 |
kumaneko |
1064 |
printk(KERN_WARNING "TOMOYO-%s: %s to %s %u denied for %s\n", |
641 |
|
|
ccs_get_msg(is_enforce), keyword, buf, port, |
642 |
kumaneko |
1657 |
ccs_get_last_name(r.domain)); |
643 |
kumaneko |
1561 |
if (is_enforce) { |
644 |
kumaneko |
1657 |
int error = ccs_check_supervisor(&r, KEYWORD_ALLOW_NETWORK |
645 |
kumaneko |
1561 |
"%s %s %u\n", keyword, buf, |
646 |
|
|
port); |
647 |
kumaneko |
1781 |
if (error == 1) |
648 |
kumaneko |
1561 |
goto retry; |
649 |
|
|
return error; |
650 |
|
|
} |
651 |
kumaneko |
1657 |
if (r.mode == 1 && ccs_check_domain_quota(r.domain)) |
652 |
kumaneko |
2002 |
ccs_update_network_entry(operation, is_ipv6 ? |
653 |
|
|
IP_RECORD_TYPE_IPv6 : |
654 |
|
|
IP_RECORD_TYPE_IPv4, |
655 |
|
|
NULL, address, address, port, port, |
656 |
|
|
r.domain, ccs_handler_cond(), 0); |
657 |
kumaneko |
111 |
return 0; |
658 |
|
|
} |
659 |
|
|
|
660 |
kumaneko |
1052 |
/** |
661 |
kumaneko |
2002 |
* ccs_write_network_policy - Write "struct ccs_ip_network_acl_record" list. |
662 |
kumaneko |
1052 |
* |
663 |
|
|
* @data: String to parse. |
664 |
|
|
* @domain: Pointer to "struct domain_info". |
665 |
kumaneko |
2002 |
* @condition: Pointer to "struct ccs_condition_list". May be NULL. |
666 |
kumaneko |
1052 |
* @is_delete: True if it is a delete request. |
667 |
|
|
* |
668 |
|
|
* Returns 0 on success, negative value otherwise. |
669 |
|
|
*/ |
670 |
|
|
int ccs_write_network_policy(char *data, struct domain_info *domain, |
671 |
kumaneko |
2002 |
const struct ccs_condition_list *condition, |
672 |
kumaneko |
1052 |
const bool is_delete) |
673 |
kumaneko |
111 |
{ |
674 |
kumaneko |
1064 |
u8 sock_type; |
675 |
|
|
u8 operation; |
676 |
|
|
u8 record_type; |
677 |
|
|
u16 min_address[8]; |
678 |
|
|
u16 max_address[8]; |
679 |
kumaneko |
2002 |
struct ccs_address_group_entry *group = NULL; |
680 |
kumaneko |
1064 |
u16 min_port; |
681 |
|
|
u16 max_port; |
682 |
kumaneko |
853 |
u8 count; |
683 |
kumaneko |
1064 |
char *cp1 = strchr(data, ' '); |
684 |
|
|
char *cp2; |
685 |
kumaneko |
1052 |
if (!cp1) |
686 |
|
|
goto out; |
687 |
|
|
cp1++; |
688 |
|
|
if (!strncmp(data, "TCP ", 4)) |
689 |
|
|
sock_type = SOCK_STREAM; |
690 |
|
|
else if (!strncmp(data, "UDP ", 4)) |
691 |
|
|
sock_type = SOCK_DGRAM; |
692 |
|
|
else if (!strncmp(data, "RAW ", 4)) |
693 |
|
|
sock_type = SOCK_RAW; |
694 |
|
|
else |
695 |
|
|
goto out; |
696 |
|
|
cp2 = strchr(cp1, ' '); |
697 |
|
|
if (!cp2) |
698 |
|
|
goto out; |
699 |
|
|
cp2++; |
700 |
|
|
if (!strncmp(cp1, "bind ", 5)) |
701 |
|
|
switch (sock_type) { |
702 |
|
|
case SOCK_STREAM: |
703 |
|
|
operation = NETWORK_ACL_TCP_BIND; |
704 |
|
|
break; |
705 |
|
|
case SOCK_DGRAM: |
706 |
|
|
operation = NETWORK_ACL_UDP_BIND; |
707 |
|
|
break; |
708 |
|
|
default: |
709 |
|
|
operation = NETWORK_ACL_RAW_BIND; |
710 |
|
|
} |
711 |
|
|
else if (!strncmp(cp1, "connect ", 8)) |
712 |
|
|
switch (sock_type) { |
713 |
|
|
case SOCK_STREAM: |
714 |
|
|
operation = NETWORK_ACL_TCP_CONNECT; |
715 |
|
|
break; |
716 |
|
|
case SOCK_DGRAM: |
717 |
|
|
operation = NETWORK_ACL_UDP_CONNECT; |
718 |
|
|
break; |
719 |
|
|
default: |
720 |
|
|
operation = NETWORK_ACL_RAW_CONNECT; |
721 |
|
|
} |
722 |
|
|
else if (sock_type == SOCK_STREAM && !strncmp(cp1, "listen ", 7)) |
723 |
kumaneko |
111 |
operation = NETWORK_ACL_TCP_LISTEN; |
724 |
kumaneko |
1052 |
else if (sock_type == SOCK_STREAM && !strncmp(cp1, "accept ", 7)) |
725 |
kumaneko |
111 |
operation = NETWORK_ACL_TCP_ACCEPT; |
726 |
kumaneko |
1052 |
else |
727 |
kumaneko |
111 |
goto out; |
728 |
kumaneko |
1052 |
cp1 = strchr(cp2, ' '); |
729 |
|
|
if (!cp1) |
730 |
|
|
goto out; |
731 |
|
|
*cp1++ = '\0'; |
732 |
kumaneko |
2002 |
switch (ccs_parse_ip_address(cp2, min_address, max_address)) { |
733 |
kumaneko |
1657 |
case 2: |
734 |
kumaneko |
111 |
record_type = IP_RECORD_TYPE_IPv6; |
735 |
kumaneko |
1657 |
break; |
736 |
|
|
case 1: |
737 |
kumaneko |
111 |
record_type = IP_RECORD_TYPE_IPv4; |
738 |
kumaneko |
1657 |
break; |
739 |
|
|
default: |
740 |
|
|
if (*cp2 != '@') |
741 |
|
|
goto out; |
742 |
kumaneko |
2002 |
group = ccs_find_or_assign_new_address_group(cp2 + 1); |
743 |
kumaneko |
1052 |
if (!group) |
744 |
|
|
return -ENOMEM; |
745 |
kumaneko |
111 |
record_type = IP_RECORD_TYPE_ADDRESS_GROUP; |
746 |
kumaneko |
1657 |
break; |
747 |
kumaneko |
111 |
} |
748 |
kumaneko |
1052 |
if (strchr(cp1, ' ')) |
749 |
|
|
goto out; |
750 |
|
|
count = sscanf(cp1, "%hu-%hu", &min_port, &max_port); |
751 |
|
|
if (count != 1 && count != 2) |
752 |
|
|
goto out; |
753 |
|
|
if (count == 1) |
754 |
|
|
max_port = min_port; |
755 |
kumaneko |
2002 |
return ccs_update_network_entry(operation, record_type, group, |
756 |
|
|
(u32 *) min_address, |
757 |
|
|
(u32 *) max_address, |
758 |
|
|
min_port, max_port, domain, condition, |
759 |
|
|
is_delete); |
760 |
kumaneko |
1657 |
out: |
761 |
|
|
return -EINVAL; |
762 |
kumaneko |
111 |
} |
763 |
|
|
|
764 |
kumaneko |
1052 |
/** |
765 |
|
|
* ccs_check_network_listen_acl - Check permission for listen() operation. |
766 |
|
|
* |
767 |
|
|
* @is_ipv6: True if @address is an IPv6 address. |
768 |
|
|
* @address: An IPv4 or IPv6 address. |
769 |
|
|
* @port: Port number. |
770 |
|
|
* |
771 |
|
|
* Returns 0 on success, negative value otherwise. |
772 |
|
|
*/ |
773 |
|
|
int ccs_check_network_listen_acl(const _Bool is_ipv6, const u8 *address, |
774 |
|
|
const u16 port) |
775 |
kumaneko |
111 |
{ |
776 |
kumaneko |
2002 |
return ccs_check_network_entry(is_ipv6, NETWORK_ACL_TCP_LISTEN, |
777 |
|
|
(const u32 *) address, ntohs(port)); |
778 |
kumaneko |
111 |
} |
779 |
|
|
|
780 |
kumaneko |
1052 |
/** |
781 |
|
|
* ccs_check_network_connect_acl - Check permission for connect() operation. |
782 |
|
|
* |
783 |
|
|
* @is_ipv6: True if @address is an IPv6 address. |
784 |
|
|
* @sock_type: Type of socket. (TCP or UDP or RAW) |
785 |
|
|
* @address: An IPv4 or IPv6 address. |
786 |
|
|
* @port: Port number. |
787 |
|
|
* |
788 |
|
|
* Returns 0 on success, negative value otherwise. |
789 |
|
|
*/ |
790 |
|
|
int ccs_check_network_connect_acl(const _Bool is_ipv6, const int sock_type, |
791 |
|
|
const u8 *address, const u16 port) |
792 |
kumaneko |
111 |
{ |
793 |
kumaneko |
1052 |
u8 operation; |
794 |
|
|
switch (sock_type) { |
795 |
|
|
case SOCK_STREAM: |
796 |
|
|
operation = NETWORK_ACL_TCP_CONNECT; |
797 |
|
|
break; |
798 |
|
|
case SOCK_DGRAM: |
799 |
|
|
operation = NETWORK_ACL_UDP_CONNECT; |
800 |
|
|
break; |
801 |
|
|
default: |
802 |
|
|
operation = NETWORK_ACL_RAW_CONNECT; |
803 |
|
|
} |
804 |
kumaneko |
2002 |
return ccs_check_network_entry(is_ipv6, operation, |
805 |
|
|
(const u32 *) address, ntohs(port)); |
806 |
kumaneko |
111 |
} |
807 |
|
|
|
808 |
kumaneko |
1052 |
/** |
809 |
|
|
* ccs_check_network_bind_acl - Check permission for bind() operation. |
810 |
|
|
* |
811 |
|
|
* @is_ipv6: True if @address is an IPv6 address. |
812 |
|
|
* @sock_type: Type of socket. (TCP or UDP or RAW) |
813 |
|
|
* @address: An IPv4 or IPv6 address. |
814 |
|
|
* @port: Port number. |
815 |
|
|
* |
816 |
|
|
* Returns 0 on success, negative value otherwise. |
817 |
|
|
*/ |
818 |
|
|
int ccs_check_network_bind_acl(const _Bool is_ipv6, const int sock_type, |
819 |
|
|
const u8 *address, const u16 port) |
820 |
kumaneko |
111 |
{ |
821 |
kumaneko |
1052 |
u8 operation; |
822 |
|
|
switch (sock_type) { |
823 |
|
|
case SOCK_STREAM: |
824 |
|
|
operation = NETWORK_ACL_TCP_BIND; |
825 |
|
|
break; |
826 |
|
|
case SOCK_DGRAM: |
827 |
|
|
operation = NETWORK_ACL_UDP_BIND; |
828 |
|
|
break; |
829 |
|
|
default: |
830 |
|
|
operation = NETWORK_ACL_RAW_BIND; |
831 |
|
|
} |
832 |
kumaneko |
2002 |
return ccs_check_network_entry(is_ipv6, operation, |
833 |
|
|
(const u32 *) address, ntohs(port)); |
834 |
kumaneko |
111 |
} |
835 |
|
|
|
836 |
kumaneko |
1052 |
/** |
837 |
|
|
* ccs_check_network_accept_acl - Check permission for accept() operation. |
838 |
|
|
* |
839 |
|
|
* @is_ipv6: True if @address is an IPv6 address. |
840 |
|
|
* @address: An IPv4 or IPv6 address. |
841 |
|
|
* @port: Port number. |
842 |
|
|
* |
843 |
|
|
* Returns 0 on success, negative value otherwise. |
844 |
|
|
*/ |
845 |
|
|
int ccs_check_network_accept_acl(const _Bool is_ipv6, const u8 *address, |
846 |
|
|
const u16 port) |
847 |
kumaneko |
111 |
{ |
848 |
kumaneko |
708 |
int retval; |
849 |
|
|
current->tomoyo_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
850 |
kumaneko |
2002 |
retval = ccs_check_network_entry(is_ipv6, NETWORK_ACL_TCP_ACCEPT, |
851 |
|
|
(const u32 *) address, ntohs(port)); |
852 |
kumaneko |
708 |
current->tomoyo_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
853 |
|
|
return retval; |
854 |
kumaneko |
111 |
} |
855 |
|
|
|
856 |
kumaneko |
1052 |
/** |
857 |
|
|
* ccs_check_network_sendmsg_acl - Check permission for sendmsg() operation. |
858 |
|
|
* |
859 |
|
|
* @is_ipv6: True if @address is an IPv6 address. |
860 |
|
|
* @sock_type: Type of socket. (UDP or RAW) |
861 |
|
|
* @address: An IPv4 or IPv6 address. |
862 |
|
|
* @port: Port number. |
863 |
|
|
* |
864 |
|
|
* Returns 0 on success, negative value otherwise. |
865 |
|
|
*/ |
866 |
|
|
int ccs_check_network_sendmsg_acl(const _Bool is_ipv6, const int sock_type, |
867 |
|
|
const u8 *address, const u16 port) |
868 |
kumaneko |
111 |
{ |
869 |
kumaneko |
1052 |
u8 operation; |
870 |
|
|
if (sock_type == SOCK_DGRAM) |
871 |
|
|
operation = NETWORK_ACL_UDP_CONNECT; |
872 |
|
|
else |
873 |
|
|
operation = NETWORK_ACL_RAW_CONNECT; |
874 |
kumaneko |
2002 |
return ccs_check_network_entry(is_ipv6, operation, |
875 |
|
|
(const u32 *) address, ntohs(port)); |
876 |
kumaneko |
111 |
} |
877 |
|
|
|
878 |
kumaneko |
1052 |
/** |
879 |
|
|
* ccs_check_network_recvmsg_acl - Check permission for recvmsg() operation. |
880 |
|
|
* |
881 |
|
|
* @is_ipv6: True if @address is an IPv6 address. |
882 |
|
|
* @sock_type: Type of socket. (UDP or RAW) |
883 |
|
|
* @address: An IPv4 or IPv6 address. |
884 |
|
|
* @port: Port number. |
885 |
|
|
* |
886 |
|
|
* Returns 0 on success, negative value otherwise. |
887 |
|
|
*/ |
888 |
|
|
int ccs_check_network_recvmsg_acl(const _Bool is_ipv6, const int sock_type, |
889 |
|
|
const u8 *address, const u16 port) |
890 |
kumaneko |
111 |
{ |
891 |
kumaneko |
708 |
int retval; |
892 |
kumaneko |
1052 |
const u8 operation |
893 |
kumaneko |
1064 |
= (sock_type == SOCK_DGRAM) ? |
894 |
kumaneko |
1052 |
NETWORK_ACL_UDP_CONNECT : NETWORK_ACL_RAW_CONNECT; |
895 |
kumaneko |
708 |
current->tomoyo_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
896 |
kumaneko |
2002 |
retval = ccs_check_network_entry(is_ipv6, operation, |
897 |
|
|
(const u32 *) address, ntohs(port)); |
898 |
kumaneko |
708 |
current->tomoyo_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
899 |
|
|
return retval; |
900 |
kumaneko |
111 |
} |