1 |
/* |
2 |
* fs/tomoyo_network.c |
3 |
* |
4 |
* Implementation of the Domain-Based Mandatory Access Control. |
5 |
* |
6 |
* Copyright (C) 2005-2007 NTT DATA CORPORATION |
7 |
* |
8 |
* Version: 1.4.1-rc2 2007/05/25 |
9 |
* |
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 |
/***** TOMOYO Linux start. *****/ |
15 |
|
16 |
#include <linux/ccs_common.h> |
17 |
#include <linux/tomoyo.h> |
18 |
#include <linux/realpath.h> |
19 |
#include <net/ip.h> |
20 |
|
21 |
/************************* VARIABLES *************************/ |
22 |
|
23 |
extern struct semaphore domain_acl_lock; |
24 |
|
25 |
/************************* AUDIT FUNCTIONS *************************/ |
26 |
|
27 |
#ifdef CONFIG_TOMOYO_AUDIT |
28 |
static int AuditNetworkLog(const int is_ipv6, const char *operation, const u32 *address, const u16 port, const int is_granted) |
29 |
{ |
30 |
char *buf; |
31 |
int len = 256; |
32 |
if (CanSaveAuditLog(is_granted) < 0) return -ENOMEM; |
33 |
if ((buf = InitAuditLog(&len)) == NULL) return -ENOMEM; |
34 |
snprintf(buf + strlen(buf), len - strlen(buf) - 1, KEYWORD_ALLOW_NETWORK "%s ", operation); |
35 |
if (is_ipv6) { |
36 |
print_ipv6(buf + strlen(buf), len - strlen(buf), (const u16 *) address); |
37 |
} else { |
38 |
u32 ip = *address; |
39 |
snprintf(buf + strlen(buf), len - strlen(buf) - 1, "%u.%u.%u.%u", NIPQUAD(ip)); |
40 |
} |
41 |
snprintf(buf + strlen(buf), len - strlen(buf) - 1, " %u\n", port); |
42 |
return WriteAuditLog(buf, is_granted); |
43 |
} |
44 |
#else |
45 |
static inline void AuditNetworkLog(const int is_ipv6, const char *operation, const u32 *address, const u16 port, const int is_granted) {} |
46 |
#endif |
47 |
|
48 |
/************************* ADDRESS GROUP HANDLER *************************/ |
49 |
|
50 |
static struct address_group_entry *group_list = NULL; |
51 |
|
52 |
static int AddAddressGroupEntry(const char *group_name, const u8 is_ipv6, const u16 *min_address, const u16 *max_address, const int is_delete) |
53 |
{ |
54 |
static DECLARE_MUTEX(lock); |
55 |
struct address_group_entry *new_group, *group; |
56 |
struct address_group_member *new_member, *member; |
57 |
const struct path_info *saved_group_name; |
58 |
int error = -ENOMEM; |
59 |
if (!IsCorrectPath(group_name, 0, 0, 0, __FUNCTION__) || !group_name[0]) return -EINVAL; |
60 |
if ((saved_group_name = SaveName(group_name)) == NULL) return -ENOMEM; |
61 |
down(&lock); |
62 |
for (group = group_list; group; group = group->next) { |
63 |
if (saved_group_name != group->group_name) continue; |
64 |
for (member = group->first_member; member; member = member->next) { |
65 |
if (member->is_ipv6 != is_ipv6) continue; |
66 |
if (is_ipv6) { |
67 |
if (memcmp(member->min.ipv6, min_address, 16) || memcmp(member->max.ipv6, max_address, 16)) continue; |
68 |
} else { |
69 |
if (member->min.ipv4 != * (u32 *) min_address || member->max.ipv4 != * (u32 *) max_address) continue; |
70 |
} |
71 |
member->is_deleted = is_delete; |
72 |
error = 0; |
73 |
goto out; |
74 |
} |
75 |
break; |
76 |
} |
77 |
if (is_delete) { |
78 |
error = -ENOENT; |
79 |
goto out; |
80 |
} |
81 |
if (!group) { |
82 |
if ((new_group = alloc_element(sizeof(*new_group))) == NULL) goto out; |
83 |
new_group->group_name = saved_group_name; |
84 |
mb(); /* Instead of using spinlock. */ |
85 |
if ((group = group_list) != NULL) { |
86 |
while (group->next) group = group->next; group->next = new_group; |
87 |
} else { |
88 |
group_list= new_group; |
89 |
} |
90 |
group = new_group; |
91 |
} |
92 |
if ((new_member = alloc_element(sizeof(*new_member))) == NULL) goto out; |
93 |
new_member->is_ipv6 = is_ipv6; |
94 |
if (is_ipv6) { |
95 |
memmove(new_member->min.ipv6, min_address, 16); |
96 |
memmove(new_member->max.ipv6, max_address, 16); |
97 |
} else { |
98 |
new_member->min.ipv4 = * (u32 *) min_address; |
99 |
new_member->max.ipv4 = * (u32 *) max_address; |
100 |
} |
101 |
mb(); /* Instead of using spinlock. */ |
102 |
if ((member = group->first_member) != NULL) { |
103 |
while (member->next) member = member->next; member->next = new_member; |
104 |
} else { |
105 |
group->first_member = new_member; |
106 |
} |
107 |
error = 0; |
108 |
out: |
109 |
up(&lock); |
110 |
return error; |
111 |
} |
112 |
|
113 |
int AddAddressGroupPolicy(char *data, const int is_delete) |
114 |
{ |
115 |
int count, is_ipv6; |
116 |
u16 min_address[8], max_address[8]; |
117 |
char *cp = strchr(data, ' '); |
118 |
if (!cp) return -EINVAL; |
119 |
*cp++ = '\0'; |
120 |
if ((count = sscanf(cp, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx-%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx", |
121 |
&min_address[0], &min_address[1], &min_address[2], &min_address[3], |
122 |
&min_address[4], &min_address[5], &min_address[6], &min_address[7], |
123 |
&max_address[0], &max_address[1], &max_address[2], &max_address[3], |
124 |
&max_address[4], &max_address[5], &max_address[6], &max_address[7])) == 8 || count == 16) { |
125 |
int i; |
126 |
for (i = 0; i < 8; i++) { |
127 |
min_address[i] = htons(min_address[i]); |
128 |
max_address[i] = htons(max_address[i]); |
129 |
} |
130 |
if (count == 8) memmove(max_address, min_address, sizeof(min_address)); |
131 |
is_ipv6 = 1; |
132 |
} else if ((count = sscanf(cp, "%hu.%hu.%hu.%hu-%hu.%hu.%hu.%hu", |
133 |
&min_address[0], &min_address[1], &min_address[2], &min_address[3], |
134 |
&max_address[0], &max_address[1], &max_address[2], &max_address[3])) == 4 || count == 8) { |
135 |
u32 ip = ((((u8) min_address[0]) << 24) + (((u8) min_address[1]) << 16) + (((u8) min_address[2]) << 8) + (u8) min_address[3]); |
136 |
* (u32 *) min_address = ip; |
137 |
if (count == 8) ip = ((((u8) max_address[0]) << 24) + (((u8) max_address[1]) << 16) + (((u8) max_address[2]) << 8) + (u8) max_address[3]); |
138 |
* (u32 *) max_address = ip; |
139 |
is_ipv6 = 0; |
140 |
} else { |
141 |
return -EINVAL; |
142 |
} |
143 |
return AddAddressGroupEntry(data, is_ipv6, min_address, max_address, is_delete); |
144 |
} |
145 |
|
146 |
static struct address_group_entry *FindOrAssignNewAddressGroup(const char *group_name) |
147 |
{ |
148 |
int i; |
149 |
struct address_group_entry *group; |
150 |
for (i = 0; i <= 1; i++) { |
151 |
for (group = group_list; group; group = group->next) { |
152 |
if (strcmp(group_name, group->group_name->name) == 0) return group; |
153 |
} |
154 |
if (i == 0) { |
155 |
const u16 dummy[2] = { 0, 0 }; |
156 |
AddAddressGroupEntry(group_name, 0, dummy, dummy, 0); |
157 |
AddAddressGroupEntry(group_name, 0, dummy, dummy, 1); |
158 |
} |
159 |
} |
160 |
return NULL; |
161 |
} |
162 |
|
163 |
static int AddressMatchesToGroup(const u8 is_ipv6, const u32 *address, const struct address_group_entry *group) |
164 |
{ |
165 |
struct address_group_member *member; |
166 |
const u32 ip = ntohl(*address); |
167 |
for (member = group->first_member; member; member = member->next) { |
168 |
if (member->is_deleted) continue; |
169 |
if (member->is_ipv6) { |
170 |
if (is_ipv6 && memcmp(member->min.ipv6, address, 16) <= 0 && memcmp(address, member->max.ipv6, 16) <= 0) return 1; |
171 |
} else { |
172 |
if (!is_ipv6 && member->min.ipv4 <= ip && ip <= member->max.ipv4) return 1; |
173 |
} |
174 |
} |
175 |
return 0; |
176 |
} |
177 |
|
178 |
int ReadAddressGroupPolicy(struct io_buffer *head) |
179 |
{ |
180 |
struct address_group_entry *group = head->read_var1; |
181 |
struct address_group_member *member = head->read_var2; |
182 |
if (!group) group = group_list; |
183 |
while (group) { |
184 |
head->read_var1 = group; |
185 |
if (!member) member = group->first_member; |
186 |
while (member) { |
187 |
head->read_var2 = member; |
188 |
if (!member->is_deleted) { |
189 |
char buf[128]; |
190 |
if (member->is_ipv6) { |
191 |
const u16 *min_address = member->min.ipv6, *max_address = member->max.ipv6; |
192 |
print_ipv6(buf, sizeof(buf), min_address); |
193 |
if (memcmp(min_address, max_address, 16)) { |
194 |
char *cp = strchr(buf, '\0'); |
195 |
*cp++ = '-'; |
196 |
print_ipv6(cp, sizeof(buf) - strlen(buf), max_address); |
197 |
} |
198 |
} else { |
199 |
const u32 min_address = member->min.ipv4, max_address = member->max.ipv4; |
200 |
memset(buf, 0, sizeof(buf)); |
201 |
snprintf(buf, sizeof(buf) - 1, "%u.%u.%u.%u", HIPQUAD(min_address)); |
202 |
if (min_address != max_address) { |
203 |
const int len = strlen(buf); |
204 |
snprintf(buf + len, sizeof(buf) - 1 - len, "-%u.%u.%u.%u", HIPQUAD(max_address)); |
205 |
} |
206 |
} |
207 |
if (io_printf(head, KEYWORD_ADDRESS_GROUP "%s %s\n", group->group_name->name, buf)) break; |
208 |
} |
209 |
member = member->next; |
210 |
} |
211 |
if (member) break; |
212 |
head->read_var2 = NULL; |
213 |
group = group->next; |
214 |
} |
215 |
return group ? -ENOMEM : 0; |
216 |
} |
217 |
|
218 |
/************************* NETWORK NETWORK ACL HANDLER *************************/ |
219 |
|
220 |
char *print_ipv6(char *buffer, const int buffer_len, const u16 *ip) |
221 |
{ |
222 |
memset(buffer, 0, buffer_len); |
223 |
snprintf(buffer, buffer_len - 1, "%x:%x:%x:%x:%x:%x:%x:%x", ntohs(ip[0]), ntohs(ip[1]), ntohs(ip[2]), ntohs(ip[3]), ntohs(ip[4]), ntohs(ip[5]), ntohs(ip[6]), ntohs(ip[7])); |
224 |
return buffer; |
225 |
} |
226 |
|
227 |
const char *network2keyword(const unsigned int operation) |
228 |
{ |
229 |
const char *keyword = "unknown"; |
230 |
switch (operation) { |
231 |
case NETWORK_ACL_UDP_BIND: |
232 |
keyword = "UDP bind"; |
233 |
break; |
234 |
case NETWORK_ACL_UDP_CONNECT: |
235 |
keyword = "UDP connect"; |
236 |
break; |
237 |
case NETWORK_ACL_TCP_BIND: |
238 |
keyword = "TCP bind"; |
239 |
break; |
240 |
case NETWORK_ACL_TCP_LISTEN: |
241 |
keyword = "TCP listen"; |
242 |
break; |
243 |
case NETWORK_ACL_TCP_CONNECT: |
244 |
keyword = "TCP connect"; |
245 |
break; |
246 |
case NETWORK_ACL_TCP_ACCEPT: |
247 |
keyword = "TCP accept"; |
248 |
break; |
249 |
case NETWORK_ACL_RAW_BIND: |
250 |
keyword = "RAW bind"; |
251 |
break; |
252 |
case NETWORK_ACL_RAW_CONNECT: |
253 |
keyword = "RAW connect"; |
254 |
break; |
255 |
} |
256 |
return keyword; |
257 |
} |
258 |
|
259 |
static int AddNetworkEntry(const u8 operation, const u8 record_type, const struct address_group_entry *group, const u32 *min_address, const u32 *max_address, const u16 min_port, const u16 max_port, struct domain_info *domain, const u8 is_add, const struct condition_list *condition) |
260 |
{ |
261 |
struct acl_info *ptr; |
262 |
int error = -ENOMEM; |
263 |
const u32 min_ip = ntohl(*min_address), max_ip = ntohl(*max_address); /* using host byte order to allow u32 comparison than memcmp().*/ |
264 |
if (!domain) return -EINVAL; |
265 |
down(&domain_acl_lock); |
266 |
if (is_add) { |
267 |
if ((ptr = domain->first_acl_ptr) == NULL) goto first_entry; |
268 |
while (1) { |
269 |
struct ip_network_acl_record *new_ptr; |
270 |
if (ptr->type == TYPE_IP_NETWORK_ACL && ptr->u.b[0] == operation && ptr->u.b[1] == record_type && ptr->cond == condition && ((struct ip_network_acl_record *) ptr)->min_port == min_port && max_port == ((struct ip_network_acl_record *) ptr)->max_port) { |
271 |
if (record_type == IP_RECORD_TYPE_ADDRESS_GROUP) { |
272 |
if (((struct ip_network_acl_record *) ptr)->u.group == group) { |
273 |
ptr->is_deleted = 0; |
274 |
/* Found. Nothing to do. */ |
275 |
error = 0; |
276 |
break; |
277 |
} |
278 |
} else if (record_type == IP_RECORD_TYPE_IPv4) { |
279 |
if (((struct ip_network_acl_record *) ptr)->u.ipv4.min == min_ip && max_ip == ((struct ip_network_acl_record *) ptr)->u.ipv4.max) { |
280 |
ptr->is_deleted = 0; |
281 |
/* Found. Nothing to do. */ |
282 |
error = 0; |
283 |
break; |
284 |
} |
285 |
} else if (record_type == IP_RECORD_TYPE_IPv6) { |
286 |
if (memcmp(((struct ip_network_acl_record *) ptr)->u.ipv6.min, min_address, 16) == 0 && memcmp(max_address, ((struct ip_network_acl_record *) ptr)->u.ipv6.max, 16) == 0) { |
287 |
ptr->is_deleted = 0; |
288 |
/* Found. Nothing to do. */ |
289 |
error = 0; |
290 |
break; |
291 |
} |
292 |
} |
293 |
} |
294 |
if (ptr->next) { |
295 |
ptr = ptr->next; |
296 |
continue; |
297 |
} |
298 |
first_entry: ; |
299 |
if (is_add == 1 && TooManyDomainACL(domain)) break; |
300 |
/* Not found. Append it to the tail. */ |
301 |
if ((new_ptr = alloc_element(sizeof(*new_ptr))) == NULL) break; |
302 |
new_ptr->head.type = TYPE_IP_NETWORK_ACL; |
303 |
new_ptr->head.u.b[0] = operation; |
304 |
new_ptr->head.u.b[1] = record_type; |
305 |
new_ptr->head.cond = condition; |
306 |
if (record_type == IP_RECORD_TYPE_ADDRESS_GROUP) { |
307 |
new_ptr->u.group = group; |
308 |
} else if (record_type == IP_RECORD_TYPE_IPv4) { |
309 |
new_ptr->u.ipv4.min = min_ip; |
310 |
new_ptr->u.ipv4.max = max_ip; |
311 |
} else { |
312 |
memmove(new_ptr->u.ipv6.min, min_address, 16); |
313 |
memmove(new_ptr->u.ipv6.max, max_address, 16); |
314 |
} |
315 |
new_ptr->min_port = min_port; |
316 |
new_ptr->max_port = max_port; |
317 |
error = AddDomainACL(ptr, domain, (struct acl_info *) new_ptr); |
318 |
break; |
319 |
} |
320 |
} else { |
321 |
error = -ENOENT; |
322 |
for (ptr = domain->first_acl_ptr; ptr; ptr = ptr->next) { |
323 |
if (ptr->type != TYPE_IP_NETWORK_ACL || ptr->is_deleted || ptr->u.b[0] != operation || ptr->u.b[1] != record_type || ptr->cond != condition || ((struct ip_network_acl_record *) ptr)->min_port != min_port || ((struct ip_network_acl_record *) ptr)->max_port != max_port) continue; |
324 |
if (record_type == IP_RECORD_TYPE_ADDRESS_GROUP) { |
325 |
if (((struct ip_network_acl_record *) ptr)->u.group != group) continue; |
326 |
} else if (record_type == IP_RECORD_TYPE_IPv4) { |
327 |
if (((struct ip_network_acl_record *) ptr)->u.ipv4.min != min_ip || max_ip != ((struct ip_network_acl_record *) ptr)->u.ipv4.max) continue; |
328 |
} else if (record_type == IP_RECORD_TYPE_IPv6) { |
329 |
if (memcmp(((struct ip_network_acl_record *) ptr)->u.ipv6.min, min_address, 16) || memcmp(max_address, ((struct ip_network_acl_record *) ptr)->u.ipv6.max, 16)) continue; |
330 |
} |
331 |
error = DelDomainACL(ptr); |
332 |
break; |
333 |
} |
334 |
} |
335 |
up(&domain_acl_lock); |
336 |
return error; |
337 |
} |
338 |
|
339 |
static int CheckNetworkEntry(const int is_ipv6, const int operation, const u32 *address, const u16 port) |
340 |
{ |
341 |
struct domain_info * const domain = current->domain_info; |
342 |
struct acl_info *ptr; |
343 |
const char *keyword = network2keyword(operation); |
344 |
const int is_enforce = CheckCCSEnforce(CCS_TOMOYO_MAC_FOR_NETWORK); |
345 |
const u32 ip = ntohl(*address); /* using host byte order to allow u32 comparison than memcmp().*/ |
346 |
if (!CheckCCSFlags(CCS_TOMOYO_MAC_FOR_NETWORK)) return 0; |
347 |
for (ptr = domain->first_acl_ptr; ptr; ptr = ptr->next) { |
348 |
if (ptr->type != TYPE_IP_NETWORK_ACL || ptr->is_deleted || ptr->u.b[0] != operation || port < ((struct ip_network_acl_record *) ptr)->min_port || ((struct ip_network_acl_record *) ptr)->max_port < port || CheckCondition(ptr->cond, NULL)) continue; |
349 |
if (ptr->u.b[1] == IP_RECORD_TYPE_ADDRESS_GROUP) { |
350 |
if (AddressMatchesToGroup(is_ipv6, address, ((struct ip_network_acl_record *) ptr)->u.group)) break; |
351 |
} else if (ptr->u.b[1] == IP_RECORD_TYPE_IPv4) { |
352 |
if (!is_ipv6 && ((struct ip_network_acl_record *) ptr)->u.ipv4.min <= ip && ip <= ((struct ip_network_acl_record *) ptr)->u.ipv4.max) break; |
353 |
} else { |
354 |
if (is_ipv6 && memcmp(((struct ip_network_acl_record *) ptr)->u.ipv6.min, address, 16) <= 0 && memcmp(address, ((struct ip_network_acl_record *) ptr)->u.ipv6.max, 16) <= 0) break; |
355 |
} |
356 |
} |
357 |
if (ptr) { |
358 |
AuditNetworkLog(is_ipv6, keyword, address, port, 1); |
359 |
return 0; |
360 |
} |
361 |
if (TomoyoVerboseMode()) { |
362 |
if (is_ipv6) { |
363 |
char buf[64]; |
364 |
print_ipv6(buf, sizeof(buf), (const u16 *) address); |
365 |
printk("TOMOYO-%s: %s to %s %u denied for %s\n", GetMSG(is_enforce), keyword, buf, port, GetLastName(domain)); |
366 |
} else { |
367 |
printk("TOMOYO-%s: %s to %u.%u.%u.%u %u denied for %s\n", GetMSG(is_enforce), keyword, HIPQUAD(ip), port, GetLastName(domain)); |
368 |
} |
369 |
} |
370 |
AuditNetworkLog(is_ipv6, keyword, address, port, 0); |
371 |
if (is_enforce) { |
372 |
if (is_ipv6) { |
373 |
char buf[64]; |
374 |
print_ipv6(buf, sizeof(buf), (const u16 *) address); |
375 |
return CheckSupervisor("%s\n" KEYWORD_ALLOW_NETWORK "%s %s %u\n", domain->domainname->name, keyword, buf, port); |
376 |
} |
377 |
return CheckSupervisor("%s\n" KEYWORD_ALLOW_NETWORK "%s %u.%u.%u.%u %u\n", domain->domainname->name, keyword, HIPQUAD(ip), port); |
378 |
} |
379 |
if (CheckCCSAccept(CCS_TOMOYO_MAC_FOR_NETWORK)) AddNetworkEntry(operation, is_ipv6 ? IP_RECORD_TYPE_IPv6: IP_RECORD_TYPE_IPv4, NULL, address, address, port, port, domain, 1, NULL); |
380 |
return 0; |
381 |
} |
382 |
|
383 |
int AddNetworkPolicy(char *data, struct domain_info *domain, const int is_delete) |
384 |
{ |
385 |
u8 sock_type, operation, record_type; |
386 |
u16 min_address[8], max_address[8]; |
387 |
struct address_group_entry *group = NULL; |
388 |
u16 min_port, max_port; |
389 |
int count; |
390 |
char *cp1 = NULL, *cp2 = NULL; |
391 |
const struct condition_list *condition = NULL; |
392 |
cp1 = FindConditionPart(data); |
393 |
if (cp1 && (condition = FindOrAssignNewCondition(cp1)) == NULL) goto out; |
394 |
if ((cp1 = strchr(data, ' ')) == NULL) goto out; cp1++; |
395 |
if (strncmp(data, "TCP ", 4) == 0) sock_type = SOCK_STREAM; |
396 |
else if (strncmp(data, "UDP ", 4) == 0) sock_type = SOCK_DGRAM; |
397 |
else if (strncmp(data, "RAW ", 4) == 0) sock_type = SOCK_RAW; |
398 |
else goto out; |
399 |
if ((cp2 = strchr(cp1, ' ')) == NULL) goto out; cp2++; |
400 |
if (strncmp(cp1, "bind ", 5) == 0) { |
401 |
operation = (sock_type == SOCK_STREAM) ? NETWORK_ACL_TCP_BIND : (sock_type == SOCK_DGRAM) ? NETWORK_ACL_UDP_BIND : NETWORK_ACL_RAW_BIND; |
402 |
} else if (strncmp(cp1, "connect ", 8) == 0) { |
403 |
operation = (sock_type == SOCK_STREAM) ? NETWORK_ACL_TCP_CONNECT : (sock_type == SOCK_DGRAM) ? NETWORK_ACL_UDP_CONNECT : NETWORK_ACL_RAW_CONNECT; |
404 |
} else if (sock_type == SOCK_STREAM && strncmp(cp1, "listen ", 7) == 0) { |
405 |
operation = NETWORK_ACL_TCP_LISTEN; |
406 |
} else if (sock_type == SOCK_STREAM && strncmp(cp1, "accept ", 7) == 0) { |
407 |
operation = NETWORK_ACL_TCP_ACCEPT; |
408 |
} else { |
409 |
goto out; |
410 |
} |
411 |
if ((cp1 = strchr(cp2, ' ')) == NULL) goto out; *cp1++ = '\0'; |
412 |
if ((count = sscanf(cp2, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx-%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx", |
413 |
&min_address[0], &min_address[1], &min_address[2], &min_address[3], |
414 |
&min_address[4], &min_address[5], &min_address[6], &min_address[7], |
415 |
&max_address[0], &max_address[1], &max_address[2], &max_address[3], |
416 |
&max_address[4], &max_address[5], &max_address[6], &max_address[7])) == 8 || count == 16) { |
417 |
int i; |
418 |
for (i = 0; i < 8; i++) { |
419 |
min_address[i] = htons(min_address[i]); |
420 |
max_address[i] = htons(max_address[i]); |
421 |
} |
422 |
if (count == 8) memmove(max_address, min_address, sizeof(min_address)); |
423 |
record_type = IP_RECORD_TYPE_IPv6; |
424 |
} else if ((count = sscanf(cp2, "%hu.%hu.%hu.%hu-%hu.%hu.%hu.%hu", |
425 |
&min_address[0], &min_address[1], &min_address[2], &min_address[3], |
426 |
&max_address[0], &max_address[1], &max_address[2], &max_address[3])) == 4 || count == 8) { |
427 |
u32 ip = htonl((((u8) min_address[0]) << 24) + (((u8) min_address[1]) << 16) + (((u8) min_address[2]) << 8) + (u8) min_address[3]); |
428 |
* (u32 *) min_address = ip; |
429 |
if (count == 8) ip = htonl((((u8) max_address[0]) << 24) + (((u8) max_address[1]) << 16) + (((u8) max_address[2]) << 8) + (u8) max_address[3]); |
430 |
* (u32 *) max_address = ip; |
431 |
record_type = IP_RECORD_TYPE_IPv4; |
432 |
} else if (*cp2 == '@') { |
433 |
if ((group = FindOrAssignNewAddressGroup(cp2 + 1)) == NULL) return -ENOMEM; |
434 |
record_type = IP_RECORD_TYPE_ADDRESS_GROUP; |
435 |
} else { |
436 |
goto out; |
437 |
} |
438 |
if (strchr(cp1, ' ')) goto out; |
439 |
if ((count = sscanf(cp1, "%hu-%hu", &min_port, &max_port)) == 1 || count == 2) { |
440 |
if (count == 1) max_port = min_port; |
441 |
return AddNetworkEntry(operation, record_type, group, (u32 *) min_address, (u32 *) max_address, min_port, max_port, domain, is_delete ? 0 : -1, condition); |
442 |
} |
443 |
out: ; |
444 |
return -EINVAL; |
445 |
} |
446 |
|
447 |
int CheckNetworkListenACL(const int is_ipv6, const u8 *address, const u16 port) |
448 |
{ |
449 |
return CheckNetworkEntry(is_ipv6, NETWORK_ACL_TCP_LISTEN, (const u32 *) address, ntohs(port)); |
450 |
} |
451 |
EXPORT_SYMBOL(CheckNetworkListenACL); |
452 |
|
453 |
int CheckNetworkConnectACL(const int is_ipv6, const int sock_type, const u8 *address, const u16 port) |
454 |
{ |
455 |
return CheckNetworkEntry(is_ipv6, sock_type == SOCK_STREAM ? NETWORK_ACL_TCP_CONNECT : (sock_type == SOCK_DGRAM ? NETWORK_ACL_UDP_CONNECT : NETWORK_ACL_RAW_CONNECT), (const u32 *) address, ntohs(port)); |
456 |
} |
457 |
EXPORT_SYMBOL(CheckNetworkConnectACL); |
458 |
|
459 |
int CheckNetworkBindACL(const int is_ipv6, const int sock_type, const u8 *address, const u16 port) |
460 |
{ |
461 |
return CheckNetworkEntry(is_ipv6, sock_type == SOCK_STREAM ? NETWORK_ACL_TCP_BIND : (sock_type == SOCK_DGRAM ? NETWORK_ACL_UDP_BIND : NETWORK_ACL_RAW_BIND), (const u32 *) address, ntohs(port)); |
462 |
} |
463 |
EXPORT_SYMBOL(CheckNetworkBindACL); |
464 |
|
465 |
int CheckNetworkAcceptACL(const int is_ipv6, const u8 *address, const u16 port) |
466 |
{ |
467 |
return CheckNetworkEntry(is_ipv6, NETWORK_ACL_TCP_ACCEPT, (const u32 *) address, ntohs(port)); |
468 |
} |
469 |
EXPORT_SYMBOL(CheckNetworkAcceptACL); |
470 |
|
471 |
int CheckNetworkSendMsgACL(const int is_ipv6, const int sock_type, const u8 *address, const u16 port) |
472 |
{ |
473 |
return CheckNetworkEntry(is_ipv6, sock_type == SOCK_DGRAM ? NETWORK_ACL_UDP_CONNECT : NETWORK_ACL_RAW_CONNECT, (const u32 *) address, ntohs(port)); |
474 |
} |
475 |
EXPORT_SYMBOL(CheckNetworkSendMsgACL); |
476 |
|
477 |
int CheckNetworkRecvMsgACL(const int is_ipv6, const int sock_type, const u8 *address, const u16 port) |
478 |
{ |
479 |
return CheckNetworkEntry(is_ipv6, sock_type == SOCK_DGRAM ? NETWORK_ACL_UDP_CONNECT : NETWORK_ACL_RAW_CONNECT, (const u32 *) address, ntohs(port)); |
480 |
} |
481 |
EXPORT_SYMBOL(CheckNetworkRecvMsgACL); |
482 |
|
483 |
/***** TOMOYO Linux end. *****/ |