1 |
kumaneko |
111 |
/* |
2 |
kumaneko |
2864 |
* security/ccsecurity/network.c |
3 |
kumaneko |
111 |
* |
4 |
kumaneko |
3502 |
* Copyright (C) 2005-2010 NTT DATA CORPORATION |
5 |
kumaneko |
111 |
* |
6 |
kumaneko |
3731 |
* Version: 1.7.2+ 2010/06/04 |
7 |
kumaneko |
111 |
* |
8 |
|
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* This file is applicable to both 2.4.30 and 2.6.11 and later. |
9 |
|
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* See README.ccs for ChangeLog. |
10 |
|
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* |
11 |
|
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*/ |
12 |
|
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|
13 |
kumaneko |
1084 |
#include <linux/net.h> |
14 |
|
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#include <linux/inet.h> |
15 |
|
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#include <linux/in.h> |
16 |
|
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#include <linux/in6.h> |
17 |
kumaneko |
2037 |
#include <net/ip.h> |
18 |
|
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#include <net/ipv6.h> |
19 |
|
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#include <net/udp.h> |
20 |
kumaneko |
2854 |
#include "internal.h" |
21 |
kumaneko |
111 |
|
22 |
kumaneko |
1052 |
/** |
23 |
kumaneko |
2002 |
* ccs_audit_network_log - Audit network log. |
24 |
kumaneko |
1052 |
* |
25 |
kumaneko |
3701 |
* @r: Pointer to "struct ccs_request_info". |
26 |
kumaneko |
1052 |
* |
27 |
|
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* Returns 0 on success, negative value otherwise. |
28 |
|
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*/ |
29 |
kumaneko |
3701 |
static int ccs_audit_network_log(struct ccs_request_info *r) |
30 |
kumaneko |
111 |
{ |
31 |
kumaneko |
3701 |
char buf[128]; |
32 |
|
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const char *operation = ccs_net2keyword(r->param.network.operation); |
33 |
|
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const u32 *address = r->param.network.address; |
34 |
|
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const u16 port = r->param.network.port; |
35 |
|
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if (r->param.network.is_ipv6) |
36 |
|
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ccs_print_ipv6(buf, sizeof(buf), (const struct in6_addr *) |
37 |
|
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address, (const struct in6_addr *) address); |
38 |
|
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else |
39 |
|
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ccs_print_ipv4(buf, sizeof(buf), r->param.network.ip, |
40 |
|
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r->param.network.ip); |
41 |
|
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ccs_write_log(r, CCS_KEYWORD_ALLOW_NETWORK "%s %s %u\n", operation, |
42 |
|
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buf, port); |
43 |
|
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if (r->granted) |
44 |
|
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return 0; |
45 |
|
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ccs_warn_log(r, "%s %s %u", operation, buf, port); |
46 |
|
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return ccs_supervisor(r, CCS_KEYWORD_ALLOW_NETWORK "%s %s %u\n", |
47 |
|
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operation, buf, port); |
48 |
kumaneko |
111 |
} |
49 |
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|
50 |
kumaneko |
1052 |
/** |
51 |
kumaneko |
2890 |
* ccs_parse_ip_address - Parse an IP address. |
52 |
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* |
53 |
|
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* @address: String to parse. |
54 |
|
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* @min: Pointer to store min address. |
55 |
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* @max: Pointer to store max address. |
56 |
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* |
57 |
kumaneko |
3689 |
* Returns CCS_IP_ADDRESS_TYPE_IPv6 if @address is an IPv6, |
58 |
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* CCS_IP_ADDRESS_TYPE_IPv4 if @address is an IPv4, |
59 |
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* CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP otherwise. |
60 |
kumaneko |
2890 |
*/ |
61 |
kumaneko |
2900 |
int ccs_parse_ip_address(char *address, u16 *min, u16 *max) |
62 |
kumaneko |
2890 |
{ |
63 |
|
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int count = sscanf(address, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx" |
64 |
|
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"-%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx", |
65 |
|
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&min[0], &min[1], &min[2], &min[3], |
66 |
|
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&min[4], &min[5], &min[6], &min[7], |
67 |
|
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&max[0], &max[1], &max[2], &max[3], |
68 |
|
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&max[4], &max[5], &max[6], &max[7]); |
69 |
|
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if (count == 8 || count == 16) { |
70 |
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u8 i; |
71 |
|
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if (count == 8) |
72 |
|
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memmove(max, min, sizeof(u16) * 8); |
73 |
|
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for (i = 0; i < 8; i++) { |
74 |
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min[i] = htons(min[i]); |
75 |
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max[i] = htons(max[i]); |
76 |
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} |
77 |
kumaneko |
3689 |
return CCS_IP_ADDRESS_TYPE_IPv6; |
78 |
kumaneko |
2890 |
} |
79 |
|
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count = sscanf(address, "%hu.%hu.%hu.%hu-%hu.%hu.%hu.%hu", |
80 |
|
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&min[0], &min[1], &min[2], &min[3], |
81 |
|
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&max[0], &max[1], &max[2], &max[3]); |
82 |
|
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if (count == 4 || count == 8) { |
83 |
|
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u32 ip = htonl((((u8) min[0]) << 24) + (((u8) min[1]) << 16) |
84 |
|
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+ (((u8) min[2]) << 8) + (u8) min[3]); |
85 |
|
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memmove(min, &ip, sizeof(ip)); |
86 |
|
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if (count == 8) |
87 |
kumaneko |
3625 |
ip = htonl((((u8) max[0]) << 24) |
88 |
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+ (((u8) max[1]) << 16) |
89 |
kumaneko |
2890 |
+ (((u8) max[2]) << 8) + (u8) max[3]); |
90 |
|
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memmove(max, &ip, sizeof(ip)); |
91 |
kumaneko |
3689 |
return CCS_IP_ADDRESS_TYPE_IPv4; |
92 |
kumaneko |
2890 |
} |
93 |
kumaneko |
3689 |
return CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP; |
94 |
kumaneko |
2890 |
} |
95 |
|
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|
96 |
kumaneko |
3690 |
/** |
97 |
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* ccs_print_ipv4 - Print an IPv4 address. |
98 |
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* |
99 |
|
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* @buffer: Buffer to write to. |
100 |
|
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* @buffer_len: Size of @buffer. |
101 |
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* @min_ip: Min address in host byte order. |
102 |
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* @max_ip: Max address in host byte order. |
103 |
|
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* |
104 |
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* Returns nothing. |
105 |
|
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*/ |
106 |
|
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void ccs_print_ipv4(char *buffer, const int buffer_len, |
107 |
|
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const u32 min_ip, const u32 max_ip) |
108 |
|
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{ |
109 |
|
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memset(buffer, 0, buffer_len); |
110 |
|
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snprintf(buffer, buffer_len - 1, "%u.%u.%u.%u%c%u.%u.%u.%u", |
111 |
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HIPQUAD(min_ip), min_ip == max_ip ? '\0' : '-', |
112 |
|
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HIPQUAD(max_ip)); |
113 |
|
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} |
114 |
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|
115 |
kumaneko |
719 |
#if !defined(NIP6) |
116 |
kumaneko |
2943 |
#define NIP6(addr) \ |
117 |
|
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ntohs((addr).s6_addr16[0]), ntohs((addr).s6_addr16[1]), \ |
118 |
|
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ntohs((addr).s6_addr16[2]), ntohs((addr).s6_addr16[3]), \ |
119 |
|
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ntohs((addr).s6_addr16[4]), ntohs((addr).s6_addr16[5]), \ |
120 |
|
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ntohs((addr).s6_addr16[6]), ntohs((addr).s6_addr16[7]) |
121 |
kumaneko |
719 |
#endif |
122 |
|
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|
123 |
kumaneko |
1052 |
/** |
124 |
kumaneko |
1054 |
* ccs_print_ipv6 - Print an IPv6 address. |
125 |
kumaneko |
1052 |
* |
126 |
|
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* @buffer: Buffer to write to. |
127 |
kumaneko |
1064 |
* @buffer_len: Size of @buffer. |
128 |
kumaneko |
3690 |
* @min_ip: Pointer to "struct in6_addr". |
129 |
|
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* @max_ip: Pointer to "struct in6_addr". |
130 |
kumaneko |
1052 |
* |
131 |
kumaneko |
1064 |
* Returns nothing. |
132 |
kumaneko |
1052 |
*/ |
133 |
kumaneko |
1064 |
void ccs_print_ipv6(char *buffer, const int buffer_len, |
134 |
kumaneko |
3690 |
const struct in6_addr *min_ip, |
135 |
|
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const struct in6_addr *max_ip) |
136 |
kumaneko |
111 |
{ |
137 |
|
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memset(buffer, 0, buffer_len); |
138 |
kumaneko |
3690 |
snprintf(buffer, buffer_len - 1, |
139 |
|
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"%x:%x:%x:%x:%x:%x:%x:%x%c%x:%x:%x:%x:%x:%x:%x:%x", |
140 |
|
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NIP6(*min_ip), min_ip == max_ip ? '\0' : '-', |
141 |
|
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NIP6(*max_ip)); |
142 |
kumaneko |
111 |
} |
143 |
|
|
|
144 |
kumaneko |
1052 |
/** |
145 |
|
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* ccs_net2keyword - Convert network operation index to network operation name. |
146 |
|
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* |
147 |
|
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* @operation: Type of operation. |
148 |
|
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* |
149 |
|
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* Returns the name of operation. |
150 |
|
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*/ |
151 |
|
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const char *ccs_net2keyword(const u8 operation) |
152 |
kumaneko |
111 |
{ |
153 |
|
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const char *keyword = "unknown"; |
154 |
|
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switch (operation) { |
155 |
kumaneko |
2915 |
case CCS_NETWORK_UDP_BIND: |
156 |
kumaneko |
111 |
keyword = "UDP bind"; |
157 |
|
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break; |
158 |
kumaneko |
2915 |
case CCS_NETWORK_UDP_CONNECT: |
159 |
kumaneko |
111 |
keyword = "UDP connect"; |
160 |
|
|
break; |
161 |
kumaneko |
2915 |
case CCS_NETWORK_TCP_BIND: |
162 |
kumaneko |
111 |
keyword = "TCP bind"; |
163 |
|
|
break; |
164 |
kumaneko |
2915 |
case CCS_NETWORK_TCP_LISTEN: |
165 |
kumaneko |
111 |
keyword = "TCP listen"; |
166 |
|
|
break; |
167 |
kumaneko |
2915 |
case CCS_NETWORK_TCP_CONNECT: |
168 |
kumaneko |
111 |
keyword = "TCP connect"; |
169 |
|
|
break; |
170 |
kumaneko |
2915 |
case CCS_NETWORK_TCP_ACCEPT: |
171 |
kumaneko |
111 |
keyword = "TCP accept"; |
172 |
|
|
break; |
173 |
kumaneko |
2915 |
case CCS_NETWORK_RAW_BIND: |
174 |
kumaneko |
111 |
keyword = "RAW bind"; |
175 |
|
|
break; |
176 |
kumaneko |
2915 |
case CCS_NETWORK_RAW_CONNECT: |
177 |
kumaneko |
111 |
keyword = "RAW connect"; |
178 |
|
|
break; |
179 |
|
|
} |
180 |
|
|
return keyword; |
181 |
|
|
} |
182 |
|
|
|
183 |
kumaneko |
3701 |
static bool ccs_check_network_acl(const struct ccs_request_info *r, |
184 |
|
|
const struct ccs_acl_info *ptr) |
185 |
|
|
{ |
186 |
|
|
const struct ccs_ip_network_acl *acl = |
187 |
|
|
container_of(ptr, typeof(*acl), head); |
188 |
|
|
bool ret; |
189 |
|
|
if (!(acl->perm & (1 << r->param.network.operation)) || |
190 |
|
|
!ccs_compare_number_union(r->param.network.port, &acl->port)) |
191 |
|
|
return false; |
192 |
|
|
switch (acl->address_type) { |
193 |
|
|
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
194 |
|
|
ret = ccs_address_matches_group(r->param.network.is_ipv6, |
195 |
|
|
r->param.network.address, |
196 |
|
|
acl->address.group); |
197 |
|
|
break; |
198 |
|
|
case CCS_IP_ADDRESS_TYPE_IPv4: |
199 |
|
|
ret = !r->param.network.is_ipv6 && |
200 |
|
|
acl->address.ipv4.min <= r->param.network.ip && |
201 |
|
|
r->param.network.ip <= acl->address.ipv4.max; |
202 |
|
|
break; |
203 |
|
|
default: |
204 |
|
|
ret = r->param.network.is_ipv6 && |
205 |
|
|
memcmp(acl->address.ipv6.min, r->param.network.address, |
206 |
|
|
16) <= 0 && |
207 |
|
|
memcmp(r->param.network.address, acl->address.ipv6.max, |
208 |
|
|
16) <= 0; |
209 |
|
|
break; |
210 |
|
|
} |
211 |
|
|
return ret; |
212 |
|
|
} |
213 |
|
|
|
214 |
kumaneko |
1052 |
/** |
215 |
kumaneko |
2922 |
* ccs_network_entry - Check permission for network operation. |
216 |
kumaneko |
2702 |
* |
217 |
|
|
* @is_ipv6: True if @address is an IPv6 address. |
218 |
|
|
* @operation: Type of operation. |
219 |
kumaneko |
3702 |
* @address: An IPv4 or IPv6 address in network byte order. |
220 |
|
|
* @port: Port number in network byte order. |
221 |
kumaneko |
2702 |
* |
222 |
|
|
* Returns 0 on success, negative value otherwise. |
223 |
|
|
*/ |
224 |
kumaneko |
2922 |
static int ccs_network_entry(const bool is_ipv6, const u8 operation, |
225 |
kumaneko |
2943 |
const u32 *address, const u16 port) |
226 |
kumaneko |
2702 |
{ |
227 |
kumaneko |
2828 |
const int idx = ccs_read_lock(); |
228 |
kumaneko |
3702 |
struct ccs_request_info r; |
229 |
|
|
int error = 0; |
230 |
|
|
if (ccs_init_request_info(&r, CCS_MAC_NETWORK_UDP_BIND + operation) |
231 |
|
|
!= CCS_CONFIG_DISABLED) { |
232 |
|
|
r.param_type = CCS_TYPE_IP_NETWORK_ACL; |
233 |
|
|
r.param.network.operation = operation; |
234 |
|
|
r.param.network.is_ipv6 = is_ipv6; |
235 |
|
|
r.param.network.address = address; |
236 |
|
|
r.param.network.port = ntohs(port); |
237 |
|
|
/* use host byte order to allow u32 comparison than memcmp().*/ |
238 |
|
|
r.param.network.ip = ntohl(*address); |
239 |
|
|
do { |
240 |
|
|
ccs_check_acl(&r, ccs_check_network_acl); |
241 |
|
|
error = ccs_audit_network_log(&r); |
242 |
|
|
} while (error == CCS_RETRY_REQUEST); |
243 |
|
|
} |
244 |
kumaneko |
2828 |
ccs_read_unlock(idx); |
245 |
kumaneko |
2702 |
return error; |
246 |
|
|
} |
247 |
|
|
|
248 |
kumaneko |
3693 |
static bool ccs_same_ip_network_acl(const struct ccs_acl_info *a, |
249 |
kumaneko |
3695 |
const struct ccs_acl_info *b) |
250 |
kumaneko |
3689 |
{ |
251 |
|
|
const struct ccs_ip_network_acl *p1 = container_of(a, typeof(*p1), |
252 |
|
|
head); |
253 |
|
|
const struct ccs_ip_network_acl *p2 = container_of(b, typeof(*p2), |
254 |
|
|
head); |
255 |
kumaneko |
3693 |
return ccs_same_acl_head(&p1->head, &p2->head) |
256 |
kumaneko |
3689 |
&& p1->address_type == p2->address_type && |
257 |
|
|
p1->address.ipv4.min == p2->address.ipv4.min && |
258 |
|
|
p1->address.ipv6.min == p2->address.ipv6.min && |
259 |
|
|
p1->address.ipv4.max == p2->address.ipv4.max && |
260 |
|
|
p1->address.ipv6.max == p2->address.ipv6.max && |
261 |
|
|
p1->address.group == p2->address.group && |
262 |
kumaneko |
3693 |
ccs_same_number_union(&p1->port, &p2->port); |
263 |
kumaneko |
3689 |
} |
264 |
|
|
|
265 |
|
|
static bool ccs_merge_ip_network_acl(struct ccs_acl_info *a, |
266 |
|
|
struct ccs_acl_info *b, |
267 |
|
|
const bool is_delete) |
268 |
|
|
{ |
269 |
kumaneko |
3695 |
u8 * const a_perm = &container_of(a, struct ccs_ip_network_acl, head) |
270 |
|
|
->perm; |
271 |
|
|
u8 perm = *a_perm; |
272 |
|
|
const u8 b_perm = container_of(b, struct ccs_ip_network_acl, head) |
273 |
|
|
->perm; |
274 |
|
|
if (is_delete) |
275 |
|
|
perm &= ~b_perm; |
276 |
|
|
else |
277 |
|
|
perm |= b_perm; |
278 |
|
|
*a_perm = perm; |
279 |
|
|
return !perm; |
280 |
kumaneko |
3689 |
} |
281 |
|
|
|
282 |
kumaneko |
2702 |
/** |
283 |
kumaneko |
3693 |
* ccs_write_network - Write "struct ccs_ip_network_acl" list. |
284 |
kumaneko |
1052 |
* |
285 |
|
|
* @data: String to parse. |
286 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". |
287 |
kumaneko |
2576 |
* @condition: Pointer to "struct ccs_condition". May be NULL. |
288 |
kumaneko |
1052 |
* @is_delete: True if it is a delete request. |
289 |
|
|
* |
290 |
|
|
* Returns 0 on success, negative value otherwise. |
291 |
|
|
*/ |
292 |
kumaneko |
3693 |
int ccs_write_network(char *data, struct ccs_domain_info *domain, |
293 |
|
|
struct ccs_condition *condition, const bool is_delete) |
294 |
kumaneko |
111 |
{ |
295 |
kumaneko |
2915 |
struct ccs_ip_network_acl e = { |
296 |
kumaneko |
2900 |
.head.type = CCS_TYPE_IP_NETWORK_ACL, |
297 |
|
|
.head.cond = condition, |
298 |
|
|
}; |
299 |
|
|
u16 min_address[8]; |
300 |
|
|
u16 max_address[8]; |
301 |
|
|
int error = is_delete ? -ENOENT : -ENOMEM; |
302 |
|
|
u8 sock_type; |
303 |
kumaneko |
3702 |
u8 operation; |
304 |
kumaneko |
2779 |
char *w[4]; |
305 |
|
|
if (!ccs_tokenize(data, w, sizeof(w)) || !w[3][0]) |
306 |
kumaneko |
2870 |
return -EINVAL; |
307 |
kumaneko |
2900 |
if (!strcmp(w[0], "TCP")) |
308 |
|
|
sock_type = SOCK_STREAM; |
309 |
|
|
else if (!strcmp(w[0], "UDP")) |
310 |
|
|
sock_type = SOCK_DGRAM; |
311 |
|
|
else if (!strcmp(w[0], "RAW")) |
312 |
|
|
sock_type = SOCK_RAW; |
313 |
|
|
else |
314 |
|
|
return -EINVAL; |
315 |
|
|
if (!strcmp(w[1], "bind")) |
316 |
|
|
switch (sock_type) { |
317 |
|
|
case SOCK_STREAM: |
318 |
kumaneko |
3702 |
operation = CCS_NETWORK_TCP_BIND; |
319 |
kumaneko |
2900 |
break; |
320 |
|
|
case SOCK_DGRAM: |
321 |
kumaneko |
3702 |
operation = CCS_NETWORK_UDP_BIND; |
322 |
kumaneko |
2900 |
break; |
323 |
|
|
default: |
324 |
kumaneko |
3702 |
operation = CCS_NETWORK_RAW_BIND; |
325 |
kumaneko |
2900 |
break; |
326 |
|
|
} |
327 |
|
|
else if (!strcmp(w[1], "connect")) |
328 |
|
|
switch (sock_type) { |
329 |
|
|
case SOCK_STREAM: |
330 |
kumaneko |
3702 |
operation = CCS_NETWORK_TCP_CONNECT; |
331 |
kumaneko |
2900 |
break; |
332 |
|
|
case SOCK_DGRAM: |
333 |
kumaneko |
3702 |
operation = CCS_NETWORK_UDP_CONNECT; |
334 |
kumaneko |
2900 |
break; |
335 |
|
|
default: |
336 |
kumaneko |
3702 |
operation = CCS_NETWORK_RAW_CONNECT; |
337 |
kumaneko |
2900 |
break; |
338 |
|
|
} |
339 |
|
|
else if (sock_type == SOCK_STREAM && !strcmp(w[1], "listen")) |
340 |
kumaneko |
3702 |
operation = CCS_NETWORK_TCP_LISTEN; |
341 |
kumaneko |
2900 |
else if (sock_type == SOCK_STREAM && !strcmp(w[1], "accept")) |
342 |
kumaneko |
3702 |
operation = CCS_NETWORK_TCP_ACCEPT; |
343 |
kumaneko |
2900 |
else |
344 |
|
|
return -EINVAL; |
345 |
kumaneko |
3702 |
e.perm = 1 << operation; |
346 |
kumaneko |
2900 |
switch (ccs_parse_ip_address(w[2], min_address, max_address)) { |
347 |
kumaneko |
3689 |
case CCS_IP_ADDRESS_TYPE_IPv6: |
348 |
kumaneko |
2916 |
e.address_type = CCS_IP_ADDRESS_TYPE_IPv6; |
349 |
kumaneko |
2900 |
e.address.ipv6.min = ccs_get_ipv6_address((struct in6_addr *) |
350 |
|
|
min_address); |
351 |
|
|
e.address.ipv6.max = ccs_get_ipv6_address((struct in6_addr *) |
352 |
|
|
max_address); |
353 |
|
|
if (!e.address.ipv6.min || !e.address.ipv6.max) |
354 |
|
|
goto out; |
355 |
|
|
break; |
356 |
kumaneko |
3689 |
case CCS_IP_ADDRESS_TYPE_IPv4: |
357 |
kumaneko |
2916 |
e.address_type = CCS_IP_ADDRESS_TYPE_IPv4; |
358 |
kumaneko |
2900 |
/* use host byte order to allow u32 comparison.*/ |
359 |
kumaneko |
2943 |
e.address.ipv4.min = ntohl(*(u32 *) min_address); |
360 |
|
|
e.address.ipv4.max = ntohl(*(u32 *) max_address); |
361 |
kumaneko |
2900 |
break; |
362 |
|
|
default: |
363 |
|
|
if (w[2][0] != '@') |
364 |
|
|
return -EINVAL; |
365 |
kumaneko |
2916 |
e.address_type = CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP; |
366 |
kumaneko |
3691 |
e.address.group = ccs_get_group(w[2] + 1, CCS_ADDRESS_GROUP); |
367 |
kumaneko |
2900 |
if (!e.address.group) |
368 |
|
|
return -ENOMEM; |
369 |
|
|
break; |
370 |
|
|
} |
371 |
|
|
if (!ccs_parse_number_union(w[3], &e.port)) |
372 |
|
|
goto out; |
373 |
kumaneko |
3693 |
error = ccs_update_domain(&e.head, sizeof(e), is_delete, domain, |
374 |
|
|
ccs_same_ip_network_acl, |
375 |
|
|
ccs_merge_ip_network_acl); |
376 |
kumaneko |
2900 |
out: |
377 |
kumaneko |
3702 |
if (e.address_type == CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP) |
378 |
kumaneko |
3689 |
ccs_put_group(e.address.group); |
379 |
kumaneko |
2916 |
else if (e.address_type == CCS_IP_ADDRESS_TYPE_IPv6) { |
380 |
kumaneko |
2900 |
ccs_put_ipv6_address(e.address.ipv6.min); |
381 |
|
|
ccs_put_ipv6_address(e.address.ipv6.max); |
382 |
|
|
} |
383 |
|
|
ccs_put_number_union(&e.port); |
384 |
|
|
return error; |
385 |
kumaneko |
111 |
} |
386 |
|
|
|
387 |
kumaneko |
3625 |
#ifndef CONFIG_NET |
388 |
|
|
|
389 |
|
|
void __init ccs_network_init(void) |
390 |
|
|
{ |
391 |
|
|
} |
392 |
|
|
|
393 |
|
|
#else |
394 |
|
|
|
395 |
kumaneko |
2037 |
#define MAX_SOCK_ADDR 128 /* net/socket.c */ |
396 |
|
|
|
397 |
|
|
/* Check permission for creating a socket. */ |
398 |
kumaneko |
3502 |
static int __ccs_socket_create_permission(int family, int type, int protocol) |
399 |
kumaneko |
2037 |
{ |
400 |
|
|
int error = 0; |
401 |
|
|
/* Nothing to do if I am a kernel service. */ |
402 |
|
|
if (segment_eq(get_fs(), KERNEL_DS)) |
403 |
|
|
return 0; |
404 |
kumaneko |
2282 |
if (family == PF_PACKET && !ccs_capable(CCS_USE_PACKET_SOCKET)) |
405 |
kumaneko |
2037 |
return -EPERM; |
406 |
kumaneko |
2282 |
if (family == PF_ROUTE && !ccs_capable(CCS_USE_ROUTE_SOCKET)) |
407 |
kumaneko |
2037 |
return -EPERM; |
408 |
|
|
if (family != PF_INET && family != PF_INET6) |
409 |
|
|
return 0; |
410 |
|
|
switch (type) { |
411 |
|
|
case SOCK_STREAM: |
412 |
kumaneko |
2282 |
if (!ccs_capable(CCS_INET_STREAM_SOCKET_CREATE)) |
413 |
kumaneko |
2037 |
error = -EPERM; |
414 |
|
|
break; |
415 |
|
|
case SOCK_DGRAM: |
416 |
kumaneko |
2282 |
if (!ccs_capable(CCS_USE_INET_DGRAM_SOCKET)) |
417 |
kumaneko |
2037 |
error = -EPERM; |
418 |
|
|
break; |
419 |
|
|
case SOCK_RAW: |
420 |
kumaneko |
2282 |
if (!ccs_capable(CCS_USE_INET_RAW_SOCKET)) |
421 |
kumaneko |
2037 |
error = -EPERM; |
422 |
|
|
break; |
423 |
|
|
} |
424 |
|
|
return error; |
425 |
|
|
} |
426 |
|
|
|
427 |
|
|
/* Check permission for listening a TCP socket. */ |
428 |
kumaneko |
3502 |
static int __ccs_socket_listen_permission(struct socket *sock) |
429 |
kumaneko |
2037 |
{ |
430 |
|
|
int error = 0; |
431 |
|
|
char addr[MAX_SOCK_ADDR]; |
432 |
|
|
int addr_len; |
433 |
kumaneko |
3702 |
u32 *address; |
434 |
|
|
u16 port; |
435 |
|
|
bool is_ipv6; |
436 |
kumaneko |
2037 |
/* Nothing to do if I am a kernel service. */ |
437 |
|
|
if (segment_eq(get_fs(), KERNEL_DS)) |
438 |
|
|
return 0; |
439 |
|
|
if (sock->type != SOCK_STREAM) |
440 |
|
|
return 0; |
441 |
|
|
switch (sock->sk->sk_family) { |
442 |
|
|
case PF_INET: |
443 |
|
|
case PF_INET6: |
444 |
|
|
break; |
445 |
|
|
default: |
446 |
|
|
return 0; |
447 |
|
|
} |
448 |
kumaneko |
2282 |
if (!ccs_capable(CCS_INET_STREAM_SOCKET_LISTEN)) |
449 |
kumaneko |
2037 |
return -EPERM; |
450 |
|
|
if (sock->ops->getname(sock, (struct sockaddr *) addr, &addr_len, 0)) |
451 |
|
|
return -EPERM; |
452 |
|
|
switch (((struct sockaddr *) addr)->sa_family) { |
453 |
|
|
case AF_INET6: |
454 |
kumaneko |
3702 |
is_ipv6 = true; |
455 |
|
|
address = (u32 *) ((struct sockaddr_in6 *) addr)->sin6_addr |
456 |
|
|
.s6_addr; |
457 |
|
|
port = ((struct sockaddr_in6 *) addr)->sin6_port; |
458 |
kumaneko |
2037 |
break; |
459 |
|
|
case AF_INET: |
460 |
kumaneko |
3702 |
is_ipv6 = false; |
461 |
|
|
address = (u32 *) &((struct sockaddr_in *) addr)->sin_addr; |
462 |
|
|
port = ((struct sockaddr_in *) addr)->sin_port; |
463 |
kumaneko |
2037 |
break; |
464 |
kumaneko |
3702 |
default: |
465 |
|
|
goto skip; |
466 |
kumaneko |
2037 |
} |
467 |
kumaneko |
3702 |
error = ccs_network_entry(is_ipv6, CCS_NETWORK_TCP_LISTEN, address, |
468 |
|
|
port); |
469 |
|
|
skip: |
470 |
kumaneko |
2037 |
return error; |
471 |
|
|
} |
472 |
|
|
|
473 |
|
|
/* Check permission for setting the remote IP address/port pair of a socket. */ |
474 |
kumaneko |
3502 |
static int __ccs_socket_connect_permission(struct socket *sock, |
475 |
|
|
struct sockaddr *addr, int addr_len) |
476 |
kumaneko |
2037 |
{ |
477 |
|
|
int error = 0; |
478 |
|
|
const unsigned int type = sock->type; |
479 |
kumaneko |
3702 |
u32 *address; |
480 |
|
|
u16 port; |
481 |
|
|
u8 operation; |
482 |
|
|
bool is_ipv6; |
483 |
kumaneko |
2037 |
/* Nothing to do if I am a kernel service. */ |
484 |
|
|
if (segment_eq(get_fs(), KERNEL_DS)) |
485 |
|
|
return 0; |
486 |
|
|
switch (type) { |
487 |
|
|
case SOCK_STREAM: |
488 |
kumaneko |
3702 |
operation = CCS_NETWORK_TCP_CONNECT; |
489 |
|
|
break; |
490 |
kumaneko |
2037 |
case SOCK_DGRAM: |
491 |
kumaneko |
3702 |
operation = CCS_NETWORK_UDP_CONNECT; |
492 |
|
|
break; |
493 |
kumaneko |
2037 |
case SOCK_RAW: |
494 |
kumaneko |
3702 |
operation = CCS_NETWORK_RAW_CONNECT; |
495 |
kumaneko |
2037 |
break; |
496 |
|
|
default: |
497 |
|
|
return 0; |
498 |
|
|
} |
499 |
|
|
switch (addr->sa_family) { |
500 |
|
|
case AF_INET6: |
501 |
|
|
if (addr_len < SIN6_LEN_RFC2133) |
502 |
kumaneko |
3702 |
goto skip; |
503 |
|
|
is_ipv6 = true; |
504 |
|
|
address = (u32 *) ((struct sockaddr_in6 *) addr)->sin6_addr |
505 |
|
|
.s6_addr; |
506 |
|
|
port = ((struct sockaddr_in6 *) addr)->sin6_port; |
507 |
kumaneko |
2037 |
break; |
508 |
|
|
case AF_INET: |
509 |
|
|
if (addr_len < sizeof(struct sockaddr_in)) |
510 |
kumaneko |
3702 |
goto skip; |
511 |
|
|
is_ipv6 = false; |
512 |
|
|
address = (u32 *) &((struct sockaddr_in *) addr)->sin_addr; |
513 |
|
|
port = ((struct sockaddr_in *) addr)->sin_port; |
514 |
kumaneko |
2037 |
break; |
515 |
kumaneko |
3702 |
default: |
516 |
|
|
goto skip; |
517 |
kumaneko |
2037 |
} |
518 |
kumaneko |
3702 |
if (type == SOCK_RAW) |
519 |
|
|
port = htons(sock->sk->sk_protocol); |
520 |
|
|
error = ccs_network_entry(is_ipv6, operation, address, port); |
521 |
|
|
skip: |
522 |
kumaneko |
2037 |
if (type != SOCK_STREAM) |
523 |
|
|
return error; |
524 |
|
|
switch (sock->sk->sk_family) { |
525 |
|
|
case PF_INET: |
526 |
|
|
case PF_INET6: |
527 |
kumaneko |
2282 |
if (!ccs_capable(CCS_INET_STREAM_SOCKET_CONNECT)) |
528 |
kumaneko |
2037 |
error = -EPERM; |
529 |
|
|
break; |
530 |
|
|
} |
531 |
|
|
return error; |
532 |
|
|
} |
533 |
|
|
|
534 |
|
|
/* Check permission for setting the local IP address/port pair of a socket. */ |
535 |
kumaneko |
3502 |
static int __ccs_socket_bind_permission(struct socket *sock, |
536 |
|
|
struct sockaddr *addr, int addr_len) |
537 |
kumaneko |
2037 |
{ |
538 |
|
|
int error = 0; |
539 |
|
|
const unsigned int type = sock->type; |
540 |
kumaneko |
3702 |
const u32 *address; |
541 |
|
|
u16 port; |
542 |
|
|
u8 operation; |
543 |
|
|
bool is_ipv6; |
544 |
kumaneko |
2037 |
/* Nothing to do if I am a kernel service. */ |
545 |
|
|
if (segment_eq(get_fs(), KERNEL_DS)) |
546 |
|
|
return 0; |
547 |
|
|
switch (type) { |
548 |
|
|
case SOCK_STREAM: |
549 |
kumaneko |
3702 |
operation = CCS_NETWORK_TCP_BIND; |
550 |
|
|
break; |
551 |
kumaneko |
2037 |
case SOCK_DGRAM: |
552 |
kumaneko |
3702 |
operation = CCS_NETWORK_UDP_BIND; |
553 |
|
|
break; |
554 |
kumaneko |
2037 |
case SOCK_RAW: |
555 |
kumaneko |
3702 |
operation = CCS_NETWORK_RAW_BIND; |
556 |
kumaneko |
2037 |
break; |
557 |
|
|
default: |
558 |
|
|
return 0; |
559 |
|
|
} |
560 |
|
|
switch (addr->sa_family) { |
561 |
|
|
case AF_INET6: |
562 |
|
|
if (addr_len < SIN6_LEN_RFC2133) |
563 |
kumaneko |
3702 |
goto skip; |
564 |
|
|
is_ipv6 = true; |
565 |
|
|
address = (u32 *) ((struct sockaddr_in6 *) addr)->sin6_addr |
566 |
|
|
.s6_addr; |
567 |
|
|
port = ((struct sockaddr_in6 *) addr)->sin6_port; |
568 |
kumaneko |
2037 |
break; |
569 |
|
|
case AF_INET: |
570 |
|
|
if (addr_len < sizeof(struct sockaddr_in)) |
571 |
kumaneko |
3702 |
goto skip; |
572 |
|
|
is_ipv6 = false; |
573 |
|
|
address = (u32 *) &((struct sockaddr_in *) addr)->sin_addr; |
574 |
|
|
port = ((struct sockaddr_in *) addr)->sin_port; |
575 |
kumaneko |
2037 |
break; |
576 |
kumaneko |
3702 |
default: |
577 |
|
|
goto skip; |
578 |
kumaneko |
2037 |
} |
579 |
kumaneko |
3702 |
if (type == SOCK_RAW) |
580 |
|
|
port = htons(sock->sk->sk_protocol); |
581 |
|
|
error = ccs_network_entry(is_ipv6, operation, address, port); |
582 |
|
|
skip: |
583 |
kumaneko |
2037 |
return error; |
584 |
|
|
} |
585 |
|
|
|
586 |
|
|
/* |
587 |
|
|
* Check permission for accepting a TCP socket. |
588 |
|
|
* |
589 |
|
|
* Currently, the LSM hook for this purpose is not provided. |
590 |
|
|
*/ |
591 |
kumaneko |
3502 |
static int __ccs_socket_accept_permission(struct socket *sock, |
592 |
|
|
struct sockaddr *addr) |
593 |
kumaneko |
2037 |
{ |
594 |
kumaneko |
3702 |
struct task_struct * const task = current; |
595 |
kumaneko |
2037 |
int error = 0; |
596 |
|
|
int addr_len; |
597 |
kumaneko |
3702 |
u32 *address; |
598 |
|
|
u16 port; |
599 |
|
|
bool is_ipv6; |
600 |
kumaneko |
2037 |
/* Nothing to do if I am a kernel service. */ |
601 |
|
|
if (segment_eq(get_fs(), KERNEL_DS)) |
602 |
|
|
return 0; |
603 |
|
|
switch (sock->sk->sk_family) { |
604 |
|
|
case PF_INET: |
605 |
|
|
case PF_INET6: |
606 |
|
|
break; |
607 |
|
|
default: |
608 |
|
|
return 0; |
609 |
|
|
} |
610 |
|
|
error = sock->ops->getname(sock, addr, &addr_len, 2); |
611 |
|
|
if (error) |
612 |
|
|
return error; |
613 |
|
|
switch (addr->sa_family) { |
614 |
|
|
case AF_INET6: |
615 |
kumaneko |
3702 |
is_ipv6 = true; |
616 |
|
|
address = (u32 *) ((struct sockaddr_in6 *) addr)->sin6_addr |
617 |
|
|
.s6_addr; |
618 |
|
|
port = ((struct sockaddr_in6 *) addr)->sin6_port; |
619 |
kumaneko |
2037 |
break; |
620 |
|
|
case AF_INET: |
621 |
kumaneko |
3702 |
is_ipv6 = false; |
622 |
|
|
address = (u32 *) &((struct sockaddr_in *) addr)->sin_addr; |
623 |
|
|
port = ((struct sockaddr_in *) addr)->sin_port; |
624 |
kumaneko |
2037 |
break; |
625 |
kumaneko |
3702 |
default: |
626 |
|
|
goto skip; |
627 |
kumaneko |
2037 |
} |
628 |
kumaneko |
3702 |
task->ccs_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
629 |
|
|
error = ccs_network_entry(is_ipv6, CCS_NETWORK_TCP_ACCEPT, address, |
630 |
|
|
port); |
631 |
|
|
task->ccs_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
632 |
|
|
skip: |
633 |
kumaneko |
2037 |
return error; |
634 |
|
|
} |
635 |
|
|
|
636 |
|
|
/* Check permission for sending a datagram via a UDP or RAW socket. */ |
637 |
kumaneko |
3502 |
static int __ccs_socket_sendmsg_permission(struct socket *sock, |
638 |
|
|
struct msghdr *msg, int size) |
639 |
kumaneko |
2037 |
{ |
640 |
kumaneko |
3075 |
struct sockaddr *addr = (struct sockaddr *) msg->msg_name; |
641 |
|
|
const int addr_len = msg->msg_namelen; |
642 |
kumaneko |
2037 |
int error = 0; |
643 |
|
|
const int type = sock->type; |
644 |
kumaneko |
3702 |
u32 *address; |
645 |
|
|
u16 port; |
646 |
|
|
bool is_ipv6; |
647 |
|
|
u8 operation; |
648 |
|
|
if (!addr) |
649 |
|
|
return 0; |
650 |
kumaneko |
2037 |
/* Nothing to do if I am a kernel service. */ |
651 |
|
|
if (segment_eq(get_fs(), KERNEL_DS)) |
652 |
|
|
return 0; |
653 |
kumaneko |
3702 |
switch (type) { |
654 |
|
|
case SOCK_DGRAM: |
655 |
|
|
operation = CCS_NETWORK_UDP_CONNECT; |
656 |
|
|
break; |
657 |
|
|
case SOCK_RAW: |
658 |
|
|
operation = CCS_NETWORK_RAW_CONNECT; |
659 |
|
|
break; |
660 |
|
|
default: |
661 |
kumaneko |
2037 |
return 0; |
662 |
kumaneko |
3702 |
} |
663 |
kumaneko |
2037 |
switch (addr->sa_family) { |
664 |
|
|
case AF_INET6: |
665 |
|
|
if (addr_len < SIN6_LEN_RFC2133) |
666 |
kumaneko |
3702 |
goto skip; |
667 |
|
|
is_ipv6 = true; |
668 |
|
|
address = (u32 *) ((struct sockaddr_in6 *) addr)->sin6_addr |
669 |
|
|
.s6_addr; |
670 |
|
|
port = ((struct sockaddr_in6 *) addr)->sin6_port; |
671 |
kumaneko |
2037 |
break; |
672 |
|
|
case AF_INET: |
673 |
|
|
if (addr_len < sizeof(struct sockaddr_in)) |
674 |
kumaneko |
3702 |
goto skip; |
675 |
|
|
is_ipv6 = false; |
676 |
|
|
address = (u32 *) &((struct sockaddr_in *) addr)->sin_addr; |
677 |
|
|
port = ((struct sockaddr_in *) addr)->sin_port; |
678 |
kumaneko |
2037 |
break; |
679 |
kumaneko |
3702 |
default: |
680 |
|
|
goto skip; |
681 |
kumaneko |
2037 |
} |
682 |
kumaneko |
3702 |
if (type == SOCK_RAW) |
683 |
|
|
port = htons(sock->sk->sk_protocol); |
684 |
|
|
error = ccs_network_entry(is_ipv6, operation, address, port); |
685 |
|
|
skip: |
686 |
kumaneko |
2037 |
return error; |
687 |
|
|
} |
688 |
|
|
|
689 |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 22) |
690 |
|
|
#if !defined(RHEL_MAJOR) || RHEL_MAJOR != 5 |
691 |
kumaneko |
3018 |
#if !defined(AX_MAJOR) || AX_MAJOR != 3 || !defined(AX_MINOR) || AX_MINOR < 2 |
692 |
kumaneko |
2037 |
|
693 |
|
|
static inline struct iphdr *ip_hdr(const struct sk_buff *skb) |
694 |
|
|
{ |
695 |
|
|
return skb->nh.iph; |
696 |
|
|
} |
697 |
|
|
|
698 |
|
|
static inline struct udphdr *udp_hdr(const struct sk_buff *skb) |
699 |
|
|
{ |
700 |
|
|
return skb->h.uh; |
701 |
|
|
} |
702 |
|
|
|
703 |
|
|
static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb) |
704 |
|
|
{ |
705 |
|
|
return skb->nh.ipv6h; |
706 |
|
|
} |
707 |
|
|
|
708 |
|
|
#endif |
709 |
|
|
#endif |
710 |
kumaneko |
3018 |
#endif |
711 |
kumaneko |
2037 |
|
712 |
kumaneko |
2459 |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 12) |
713 |
|
|
static void skb_kill_datagram(struct sock *sk, struct sk_buff *skb, |
714 |
|
|
unsigned int flags) |
715 |
|
|
{ |
716 |
|
|
/* Clear queue. */ |
717 |
|
|
if (flags & MSG_PEEK) { |
718 |
|
|
int clear = 0; |
719 |
|
|
spin_lock_irq(&sk->sk_receive_queue.lock); |
720 |
|
|
if (skb == skb_peek(&sk->sk_receive_queue)) { |
721 |
|
|
__skb_unlink(skb, &sk->sk_receive_queue); |
722 |
|
|
clear = 1; |
723 |
|
|
} |
724 |
|
|
spin_unlock_irq(&sk->sk_receive_queue.lock); |
725 |
|
|
if (clear) |
726 |
|
|
kfree_skb(skb); |
727 |
|
|
} |
728 |
kumaneko |
2570 |
skb_free_datagram(sk, skb); |
729 |
kumaneko |
2459 |
} |
730 |
|
|
#elif LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 16) |
731 |
|
|
static void skb_kill_datagram(struct sock *sk, struct sk_buff *skb, |
732 |
|
|
unsigned int flags) |
733 |
|
|
{ |
734 |
|
|
/* Clear queue. */ |
735 |
|
|
if (flags & MSG_PEEK) { |
736 |
|
|
int clear = 0; |
737 |
|
|
spin_lock_bh(&sk->sk_receive_queue.lock); |
738 |
|
|
if (skb == skb_peek(&sk->sk_receive_queue)) { |
739 |
|
|
__skb_unlink(skb, &sk->sk_receive_queue); |
740 |
|
|
clear = 1; |
741 |
|
|
} |
742 |
|
|
spin_unlock_bh(&sk->sk_receive_queue.lock); |
743 |
|
|
if (clear) |
744 |
|
|
kfree_skb(skb); |
745 |
|
|
} |
746 |
kumaneko |
2570 |
skb_free_datagram(sk, skb); |
747 |
kumaneko |
2459 |
} |
748 |
|
|
#endif |
749 |
|
|
|
750 |
kumaneko |
2037 |
/* |
751 |
|
|
* Check permission for receiving a datagram via a UDP or RAW socket. |
752 |
|
|
* |
753 |
|
|
* Currently, the LSM hook for this purpose is not provided. |
754 |
|
|
*/ |
755 |
kumaneko |
3502 |
static int __ccs_socket_recvmsg_permission(struct sock *sk, |
756 |
|
|
struct sk_buff *skb, |
757 |
|
|
const unsigned int flags) |
758 |
kumaneko |
2037 |
{ |
759 |
kumaneko |
3702 |
struct task_struct * const task = current; |
760 |
kumaneko |
2037 |
int error = 0; |
761 |
|
|
const unsigned int type = sk->sk_type; |
762 |
kumaneko |
3702 |
u16 port; |
763 |
|
|
bool is_ipv6; |
764 |
|
|
u8 operation; |
765 |
|
|
union { |
766 |
|
|
struct in6_addr sin6; |
767 |
|
|
struct in_addr sin4; |
768 |
|
|
} address; |
769 |
|
|
switch (type) { |
770 |
|
|
case SOCK_DGRAM: |
771 |
|
|
operation = CCS_NETWORK_UDP_CONNECT; |
772 |
|
|
break; |
773 |
|
|
case SOCK_RAW: |
774 |
|
|
operation = CCS_NETWORK_RAW_CONNECT; |
775 |
|
|
break; |
776 |
|
|
default: |
777 |
kumaneko |
2037 |
return 0; |
778 |
kumaneko |
3702 |
} |
779 |
kumaneko |
2037 |
/* Nothing to do if I am a kernel service. */ |
780 |
|
|
if (segment_eq(get_fs(), KERNEL_DS)) |
781 |
|
|
return 0; |
782 |
|
|
switch (sk->sk_family) { |
783 |
|
|
case PF_INET6: |
784 |
kumaneko |
3702 |
is_ipv6 = true; |
785 |
|
|
if (type == SOCK_DGRAM && skb->protocol == htons(ETH_P_IP)) |
786 |
|
|
ipv6_addr_set(&address.sin6, 0, 0, htonl(0xffff), |
787 |
|
|
ip_hdr(skb)->saddr); |
788 |
|
|
else |
789 |
|
|
ipv6_addr_copy(&address.sin6, &ipv6_hdr(skb)->saddr); |
790 |
kumaneko |
2037 |
break; |
791 |
|
|
case PF_INET: |
792 |
kumaneko |
3702 |
is_ipv6 = false; |
793 |
|
|
address.sin4.s_addr = ip_hdr(skb)->saddr; |
794 |
kumaneko |
2037 |
break; |
795 |
kumaneko |
3702 |
default: |
796 |
|
|
goto skip; |
797 |
kumaneko |
2037 |
} |
798 |
kumaneko |
3702 |
if (type == SOCK_DGRAM) |
799 |
|
|
port = udp_hdr(skb)->source; |
800 |
|
|
else |
801 |
|
|
port = htons(sk->sk_protocol); |
802 |
|
|
task->ccs_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
803 |
|
|
error = ccs_network_entry(is_ipv6, operation, (u32 *) &address, port); |
804 |
|
|
task->ccs_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
805 |
|
|
skip: |
806 |
kumaneko |
2037 |
if (!error) |
807 |
|
|
return 0; |
808 |
|
|
/* |
809 |
|
|
* Remove from queue if MSG_PEEK is used so that |
810 |
|
|
* the head message from unwanted source in receive queue will not |
811 |
|
|
* prevent the caller from picking up next message from wanted source |
812 |
|
|
* when the caller is using MSG_PEEK flag for picking up. |
813 |
|
|
*/ |
814 |
kumaneko |
3702 |
{ |
815 |
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35) |
816 |
kumaneko |
3718 |
bool slow = false; |
817 |
kumaneko |
3702 |
if (type == SOCK_DGRAM) |
818 |
|
|
slow = lock_sock_fast(sk); |
819 |
|
|
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
820 |
|
|
if (type == SOCK_DGRAM) |
821 |
|
|
lock_sock(sk); |
822 |
kumaneko |
2037 |
#endif |
823 |
kumaneko |
3702 |
skb_kill_datagram(sk, skb, flags); |
824 |
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35) |
825 |
|
|
if (type == SOCK_DGRAM) |
826 |
|
|
unlock_sock_fast(sk, slow); |
827 |
|
|
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
828 |
|
|
if (type == SOCK_DGRAM) |
829 |
|
|
release_sock(sk); |
830 |
kumaneko |
2459 |
#endif |
831 |
kumaneko |
3702 |
} |
832 |
kumaneko |
2037 |
/* Hope less harmful than -EPERM. */ |
833 |
kumaneko |
2519 |
return -ENOMEM; |
834 |
kumaneko |
2037 |
} |
835 |
kumaneko |
3502 |
|
836 |
|
|
void __init ccs_network_init(void) |
837 |
|
|
{ |
838 |
|
|
ccsecurity_ops.socket_create_permission = |
839 |
|
|
__ccs_socket_create_permission; |
840 |
|
|
ccsecurity_ops.socket_listen_permission = |
841 |
|
|
__ccs_socket_listen_permission; |
842 |
|
|
ccsecurity_ops.socket_connect_permission = |
843 |
|
|
__ccs_socket_connect_permission; |
844 |
|
|
ccsecurity_ops.socket_bind_permission = __ccs_socket_bind_permission; |
845 |
|
|
ccsecurity_ops.socket_accept_permission = |
846 |
|
|
__ccs_socket_accept_permission; |
847 |
|
|
ccsecurity_ops.socket_sendmsg_permission = |
848 |
|
|
__ccs_socket_sendmsg_permission; |
849 |
|
|
ccsecurity_ops.socket_recvmsg_permission = |
850 |
|
|
__ccs_socket_recvmsg_permission; |
851 |
|
|
} |
852 |
kumaneko |
3625 |
|
853 |
|
|
#endif |