Line data Source code
1 : /*
2 : * RADIUS message processing
3 : * Copyright (c) 2002-2009, 2012, 2014, Jouni Malinen <j@w1.fi>
4 : *
5 : * This software may be distributed under the terms of the BSD license.
6 : * See README for more details.
7 : */
8 :
9 : #ifndef RADIUS_H
10 : #define RADIUS_H
11 :
12 : /* RFC 2865 - RADIUS */
13 :
14 : #ifdef _MSC_VER
15 : #pragma pack(push, 1)
16 : #endif /* _MSC_VER */
17 :
18 : struct radius_hdr {
19 : u8 code;
20 : u8 identifier;
21 : be16 length; /* including this header */
22 : u8 authenticator[16];
23 : /* followed by length-20 octets of attributes */
24 : } STRUCT_PACKED;
25 :
26 : enum { RADIUS_CODE_ACCESS_REQUEST = 1,
27 : RADIUS_CODE_ACCESS_ACCEPT = 2,
28 : RADIUS_CODE_ACCESS_REJECT = 3,
29 : RADIUS_CODE_ACCOUNTING_REQUEST = 4,
30 : RADIUS_CODE_ACCOUNTING_RESPONSE = 5,
31 : RADIUS_CODE_ACCESS_CHALLENGE = 11,
32 : RADIUS_CODE_STATUS_SERVER = 12,
33 : RADIUS_CODE_STATUS_CLIENT = 13,
34 : RADIUS_CODE_DISCONNECT_REQUEST = 40,
35 : RADIUS_CODE_DISCONNECT_ACK = 41,
36 : RADIUS_CODE_DISCONNECT_NAK = 42,
37 : RADIUS_CODE_COA_REQUEST = 43,
38 : RADIUS_CODE_COA_ACK = 44,
39 : RADIUS_CODE_COA_NAK = 45,
40 : RADIUS_CODE_RESERVED = 255
41 : };
42 :
43 : struct radius_attr_hdr {
44 : u8 type;
45 : u8 length; /* including this header */
46 : /* followed by length-2 octets of attribute value */
47 : } STRUCT_PACKED;
48 :
49 : #define RADIUS_MAX_ATTR_LEN (255 - sizeof(struct radius_attr_hdr))
50 :
51 : enum { RADIUS_ATTR_USER_NAME = 1,
52 : RADIUS_ATTR_USER_PASSWORD = 2,
53 : RADIUS_ATTR_NAS_IP_ADDRESS = 4,
54 : RADIUS_ATTR_NAS_PORT = 5,
55 : RADIUS_ATTR_FRAMED_MTU = 12,
56 : RADIUS_ATTR_REPLY_MESSAGE = 18,
57 : RADIUS_ATTR_STATE = 24,
58 : RADIUS_ATTR_CLASS = 25,
59 : RADIUS_ATTR_VENDOR_SPECIFIC = 26,
60 : RADIUS_ATTR_SESSION_TIMEOUT = 27,
61 : RADIUS_ATTR_IDLE_TIMEOUT = 28,
62 : RADIUS_ATTR_TERMINATION_ACTION = 29,
63 : RADIUS_ATTR_CALLED_STATION_ID = 30,
64 : RADIUS_ATTR_CALLING_STATION_ID = 31,
65 : RADIUS_ATTR_NAS_IDENTIFIER = 32,
66 : RADIUS_ATTR_PROXY_STATE = 33,
67 : RADIUS_ATTR_ACCT_STATUS_TYPE = 40,
68 : RADIUS_ATTR_ACCT_DELAY_TIME = 41,
69 : RADIUS_ATTR_ACCT_INPUT_OCTETS = 42,
70 : RADIUS_ATTR_ACCT_OUTPUT_OCTETS = 43,
71 : RADIUS_ATTR_ACCT_SESSION_ID = 44,
72 : RADIUS_ATTR_ACCT_AUTHENTIC = 45,
73 : RADIUS_ATTR_ACCT_SESSION_TIME = 46,
74 : RADIUS_ATTR_ACCT_INPUT_PACKETS = 47,
75 : RADIUS_ATTR_ACCT_OUTPUT_PACKETS = 48,
76 : RADIUS_ATTR_ACCT_TERMINATE_CAUSE = 49,
77 : RADIUS_ATTR_ACCT_MULTI_SESSION_ID = 50,
78 : RADIUS_ATTR_ACCT_LINK_COUNT = 51,
79 : RADIUS_ATTR_ACCT_INPUT_GIGAWORDS = 52,
80 : RADIUS_ATTR_ACCT_OUTPUT_GIGAWORDS = 53,
81 : RADIUS_ATTR_EVENT_TIMESTAMP = 55,
82 : RADIUS_ATTR_NAS_PORT_TYPE = 61,
83 : RADIUS_ATTR_TUNNEL_TYPE = 64,
84 : RADIUS_ATTR_TUNNEL_MEDIUM_TYPE = 65,
85 : RADIUS_ATTR_TUNNEL_PASSWORD = 69,
86 : RADIUS_ATTR_CONNECT_INFO = 77,
87 : RADIUS_ATTR_EAP_MESSAGE = 79,
88 : RADIUS_ATTR_MESSAGE_AUTHENTICATOR = 80,
89 : RADIUS_ATTR_TUNNEL_PRIVATE_GROUP_ID = 81,
90 : RADIUS_ATTR_ACCT_INTERIM_INTERVAL = 85,
91 : RADIUS_ATTR_CHARGEABLE_USER_IDENTITY = 89,
92 : RADIUS_ATTR_NAS_IPV6_ADDRESS = 95,
93 : RADIUS_ATTR_ERROR_CAUSE = 101,
94 : RADIUS_ATTR_EAP_KEY_NAME = 102,
95 : RADIUS_ATTR_OPERATOR_NAME = 126,
96 : RADIUS_ATTR_LOCATION_INFO = 127,
97 : RADIUS_ATTR_LOCATION_DATA = 128,
98 : RADIUS_ATTR_BASIC_LOCATION_POLICY_RULES = 129,
99 : RADIUS_ATTR_EXTENDED_LOCATION_POLICY_RULES = 130,
100 : RADIUS_ATTR_LOCATION_CAPABLE = 131,
101 : RADIUS_ATTR_REQUESTED_LOCATION_INFO = 132,
102 : RADIUS_ATTR_MOBILITY_DOMAIN_ID = 177,
103 : RADIUS_ATTR_WLAN_HESSID = 181,
104 : RADIUS_ATTR_WLAN_PAIRWISE_CIPHER = 186,
105 : RADIUS_ATTR_WLAN_GROUP_CIPHER = 187,
106 : RADIUS_ATTR_WLAN_AKM_SUITE = 188,
107 : RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER = 189,
108 : };
109 :
110 :
111 : /* Termination-Action */
112 : #define RADIUS_TERMINATION_ACTION_DEFAULT 0
113 : #define RADIUS_TERMINATION_ACTION_RADIUS_REQUEST 1
114 :
115 : /* NAS-Port-Type */
116 : #define RADIUS_NAS_PORT_TYPE_IEEE_802_11 19
117 :
118 : /* Acct-Status-Type */
119 : #define RADIUS_ACCT_STATUS_TYPE_START 1
120 : #define RADIUS_ACCT_STATUS_TYPE_STOP 2
121 : #define RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE 3
122 : #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON 7
123 : #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF 8
124 :
125 : /* Acct-Authentic */
126 : #define RADIUS_ACCT_AUTHENTIC_RADIUS 1
127 : #define RADIUS_ACCT_AUTHENTIC_LOCAL 2
128 : #define RADIUS_ACCT_AUTHENTIC_REMOTE 3
129 :
130 : /* Acct-Terminate-Cause */
131 : #define RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST 1
132 : #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_CARRIER 2
133 : #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_SERVICE 3
134 : #define RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT 4
135 : #define RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT 5
136 : #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_RESET 6
137 : #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT 7
138 : #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_ERROR 8
139 : #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_ERROR 9
140 : #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REQUEST 10
141 : #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT 11
142 : #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_UNNEEDED 12
143 : #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_PREEMPTED 13
144 : #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_SUSPENDED 14
145 : #define RADIUS_ACCT_TERMINATE_CAUSE_SERVICE_UNAVAILABLE 15
146 : #define RADIUS_ACCT_TERMINATE_CAUSE_CALLBACK 16
147 : #define RADIUS_ACCT_TERMINATE_CAUSE_USER_ERROR 17
148 : #define RADIUS_ACCT_TERMINATE_CAUSE_HOST_REQUEST 18
149 :
150 : #define RADIUS_TUNNEL_TAGS 32
151 :
152 : /* Tunnel-Type */
153 : #define RADIUS_TUNNEL_TYPE_PPTP 1
154 : #define RADIUS_TUNNEL_TYPE_L2TP 3
155 : #define RADIUS_TUNNEL_TYPE_IPIP 7
156 : #define RADIUS_TUNNEL_TYPE_GRE 10
157 : #define RADIUS_TUNNEL_TYPE_VLAN 13
158 :
159 : /* Tunnel-Medium-Type */
160 : #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV4 1
161 : #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV6 2
162 : #define RADIUS_TUNNEL_MEDIUM_TYPE_802 6
163 :
164 :
165 : struct radius_attr_vendor {
166 : u8 vendor_type;
167 : u8 vendor_length;
168 : } STRUCT_PACKED;
169 :
170 : #define RADIUS_VENDOR_ID_CISCO 9
171 : #define RADIUS_CISCO_AV_PAIR 1
172 :
173 : /* RFC 2548 - Microsoft Vendor-specific RADIUS Attributes */
174 : #define RADIUS_VENDOR_ID_MICROSOFT 311
175 :
176 : enum { RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY = 16,
177 : RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY = 17
178 : };
179 :
180 :
181 : /* Hotspot 2.0 - WFA Vendor-specific RADIUS Attributes */
182 : #define RADIUS_VENDOR_ID_WFA 40808
183 :
184 : enum {
185 : RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION = 1,
186 : RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION = 2,
187 : RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION = 3,
188 : RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ = 4,
189 : RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL = 5,
190 : };
191 :
192 : #ifdef _MSC_VER
193 : #pragma pack(pop)
194 : #endif /* _MSC_VER */
195 :
196 : struct radius_ms_mppe_keys {
197 : u8 *send;
198 : size_t send_len;
199 : u8 *recv;
200 : size_t recv_len;
201 : };
202 :
203 :
204 : struct radius_msg;
205 :
206 : /* Default size to be allocated for new RADIUS messages */
207 : #define RADIUS_DEFAULT_MSG_SIZE 1024
208 :
209 : /* Default size to be allocated for attribute array */
210 : #define RADIUS_DEFAULT_ATTR_COUNT 16
211 :
212 :
213 : /* MAC address ASCII format for IEEE 802.1X use
214 : * (draft-congdon-radius-8021x-20.txt) */
215 : #define RADIUS_802_1X_ADDR_FORMAT "%02X-%02X-%02X-%02X-%02X-%02X"
216 : /* MAC address ASCII format for non-802.1X use */
217 : #define RADIUS_ADDR_FORMAT "%02x%02x%02x%02x%02x%02x"
218 :
219 : struct radius_hdr * radius_msg_get_hdr(struct radius_msg *msg);
220 : struct wpabuf * radius_msg_get_buf(struct radius_msg *msg);
221 : struct radius_msg * radius_msg_new(u8 code, u8 identifier);
222 : void radius_msg_free(struct radius_msg *msg);
223 : void radius_msg_dump(struct radius_msg *msg);
224 : int radius_msg_finish(struct radius_msg *msg, const u8 *secret,
225 : size_t secret_len);
226 : int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret,
227 : size_t secret_len, const u8 *req_authenticator);
228 : int radius_msg_finish_das_resp(struct radius_msg *msg, const u8 *secret,
229 : size_t secret_len,
230 : const struct radius_hdr *req_hdr);
231 : void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret,
232 : size_t secret_len);
233 : void radius_msg_finish_acct_resp(struct radius_msg *msg, const u8 *secret,
234 : size_t secret_len,
235 : const u8 *req_authenticator);
236 : int radius_msg_verify_acct_req(struct radius_msg *msg, const u8 *secret,
237 : size_t secret_len);
238 : int radius_msg_verify_das_req(struct radius_msg *msg, const u8 *secret,
239 : size_t secret_len);
240 : struct radius_attr_hdr * radius_msg_add_attr(struct radius_msg *msg, u8 type,
241 : const u8 *data, size_t data_len);
242 : struct radius_msg * radius_msg_parse(const u8 *data, size_t len);
243 : int radius_msg_add_eap(struct radius_msg *msg, const u8 *data,
244 : size_t data_len);
245 : struct wpabuf * radius_msg_get_eap(struct radius_msg *msg);
246 : int radius_msg_verify(struct radius_msg *msg, const u8 *secret,
247 : size_t secret_len, struct radius_msg *sent_msg,
248 : int auth);
249 : int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret,
250 : size_t secret_len, const u8 *req_auth);
251 : int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src,
252 : u8 type);
253 : void radius_msg_make_authenticator(struct radius_msg *msg,
254 : const u8 *data, size_t len);
255 : struct radius_ms_mppe_keys *
256 : radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg,
257 : const u8 *secret, size_t secret_len);
258 : struct radius_ms_mppe_keys *
259 : radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg,
260 : const u8 *secret, size_t secret_len);
261 : int radius_msg_add_mppe_keys(struct radius_msg *msg,
262 : const u8 *req_authenticator,
263 : const u8 *secret, size_t secret_len,
264 : const u8 *send_key, size_t send_key_len,
265 : const u8 *recv_key, size_t recv_key_len);
266 : int radius_msg_add_wfa(struct radius_msg *msg, u8 subtype, const u8 *data,
267 : size_t len);
268 : int radius_user_password_hide(struct radius_msg *msg,
269 : const u8 *data, size_t data_len,
270 : const u8 *secret, size_t secret_len,
271 : u8 *buf, size_t buf_len);
272 : struct radius_attr_hdr *
273 : radius_msg_add_attr_user_password(struct radius_msg *msg,
274 : const u8 *data, size_t data_len,
275 : const u8 *secret, size_t secret_len);
276 : int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len);
277 : int radius_msg_get_vlanid(struct radius_msg *msg);
278 : char * radius_msg_get_tunnel_password(struct radius_msg *msg, int *keylen,
279 : const u8 *secret, size_t secret_len,
280 : struct radius_msg *sent_msg, size_t n);
281 :
282 28125 : static inline int radius_msg_add_attr_int32(struct radius_msg *msg, u8 type,
283 : u32 value)
284 : {
285 28125 : u32 val = htonl(value);
286 28125 : return radius_msg_add_attr(msg, type, (u8 *) &val, 4) != NULL;
287 : }
288 :
289 8170 : static inline int radius_msg_get_attr_int32(struct radius_msg *msg, u8 type,
290 : u32 *value)
291 : {
292 : u32 val;
293 : int res;
294 8170 : res = radius_msg_get_attr(msg, type, (u8 *) &val, 4);
295 8170 : if (res != 4)
296 8161 : return -1;
297 :
298 9 : *value = ntohl(val);
299 9 : return 0;
300 : }
301 : int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf,
302 : size_t *len, const u8 *start);
303 : int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len);
304 :
305 :
306 : struct radius_attr_data {
307 : u8 *data;
308 : size_t len;
309 : };
310 :
311 : struct radius_class_data {
312 : struct radius_attr_data *attr;
313 : size_t count;
314 : };
315 :
316 : void radius_free_class(struct radius_class_data *c);
317 : int radius_copy_class(struct radius_class_data *dst,
318 : const struct radius_class_data *src);
319 :
320 : u8 radius_msg_find_unlisted_attr(struct radius_msg *msg, u8 *attrs);
321 :
322 : #endif /* RADIUS_H */
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