LCOV - code coverage report
Current view: top level - src/radius - radius.h (source / functions) Hit Total Coverage
Test: wpa_supplicant/hostapd combined for hwsim test run 1401264779 Lines: 9 9 100.0 %
Date: 2014-05-28 Functions: 2 2 100.0 %

          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             : };
      96             : 
      97             : 
      98             : /* Termination-Action */
      99             : #define RADIUS_TERMINATION_ACTION_DEFAULT 0
     100             : #define RADIUS_TERMINATION_ACTION_RADIUS_REQUEST 1
     101             : 
     102             : /* NAS-Port-Type */
     103             : #define RADIUS_NAS_PORT_TYPE_IEEE_802_11 19
     104             : 
     105             : /* Acct-Status-Type */
     106             : #define RADIUS_ACCT_STATUS_TYPE_START 1
     107             : #define RADIUS_ACCT_STATUS_TYPE_STOP 2
     108             : #define RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE 3
     109             : #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON 7
     110             : #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF 8
     111             : 
     112             : /* Acct-Authentic */
     113             : #define RADIUS_ACCT_AUTHENTIC_RADIUS 1
     114             : #define RADIUS_ACCT_AUTHENTIC_LOCAL 2
     115             : #define RADIUS_ACCT_AUTHENTIC_REMOTE 3
     116             : 
     117             : /* Acct-Terminate-Cause */
     118             : #define RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST 1
     119             : #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_CARRIER 2
     120             : #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_SERVICE 3
     121             : #define RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT 4
     122             : #define RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT 5
     123             : #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_RESET 6
     124             : #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT 7
     125             : #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_ERROR 8
     126             : #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_ERROR 9
     127             : #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REQUEST 10
     128             : #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT 11
     129             : #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_UNNEEDED 12
     130             : #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_PREEMPTED 13
     131             : #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_SUSPENDED 14
     132             : #define RADIUS_ACCT_TERMINATE_CAUSE_SERVICE_UNAVAILABLE 15
     133             : #define RADIUS_ACCT_TERMINATE_CAUSE_CALLBACK 16
     134             : #define RADIUS_ACCT_TERMINATE_CAUSE_USER_ERROR 17
     135             : #define RADIUS_ACCT_TERMINATE_CAUSE_HOST_REQUEST 18
     136             : 
     137             : #define RADIUS_TUNNEL_TAGS 32
     138             : 
     139             : /* Tunnel-Type */
     140             : #define RADIUS_TUNNEL_TYPE_PPTP 1
     141             : #define RADIUS_TUNNEL_TYPE_L2TP 3
     142             : #define RADIUS_TUNNEL_TYPE_IPIP 7
     143             : #define RADIUS_TUNNEL_TYPE_GRE 10
     144             : #define RADIUS_TUNNEL_TYPE_VLAN 13
     145             : 
     146             : /* Tunnel-Medium-Type */
     147             : #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV4 1
     148             : #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV6 2
     149             : #define RADIUS_TUNNEL_MEDIUM_TYPE_802 6
     150             : 
     151             : 
     152             : struct radius_attr_vendor {
     153             :         u8 vendor_type;
     154             :         u8 vendor_length;
     155             : } STRUCT_PACKED;
     156             : 
     157             : #define RADIUS_VENDOR_ID_CISCO 9
     158             : #define RADIUS_CISCO_AV_PAIR 1
     159             : 
     160             : /* RFC 2548 - Microsoft Vendor-specific RADIUS Attributes */
     161             : #define RADIUS_VENDOR_ID_MICROSOFT 311
     162             : 
     163             : enum { RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY = 16,
     164             :        RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY = 17
     165             : };
     166             : 
     167             : 
     168             : /* Hotspot 2.0 - WFA Vendor-specific RADIUS Attributes */
     169             : #define RADIUS_VENDOR_ID_WFA 40808
     170             : 
     171             : enum {
     172             :         RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION = 1,
     173             :         RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION = 2,
     174             :         RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION = 3,
     175             :         RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ = 4,
     176             :         RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL = 5,
     177             : };
     178             : 
     179             : #ifdef _MSC_VER
     180             : #pragma pack(pop)
     181             : #endif /* _MSC_VER */
     182             : 
     183             : struct radius_ms_mppe_keys {
     184             :         u8 *send;
     185             :         size_t send_len;
     186             :         u8 *recv;
     187             :         size_t recv_len;
     188             : };
     189             : 
     190             : 
     191             : struct radius_msg;
     192             : 
     193             : /* Default size to be allocated for new RADIUS messages */
     194             : #define RADIUS_DEFAULT_MSG_SIZE 1024
     195             : 
     196             : /* Default size to be allocated for attribute array */
     197             : #define RADIUS_DEFAULT_ATTR_COUNT 16
     198             : 
     199             : 
     200             : /* MAC address ASCII format for IEEE 802.1X use
     201             :  * (draft-congdon-radius-8021x-20.txt) */
     202             : #define RADIUS_802_1X_ADDR_FORMAT "%02X-%02X-%02X-%02X-%02X-%02X"
     203             : /* MAC address ASCII format for non-802.1X use */
     204             : #define RADIUS_ADDR_FORMAT "%02x%02x%02x%02x%02x%02x"
     205             : 
     206             : struct radius_hdr * radius_msg_get_hdr(struct radius_msg *msg);
     207             : struct wpabuf * radius_msg_get_buf(struct radius_msg *msg);
     208             : struct radius_msg * radius_msg_new(u8 code, u8 identifier);
     209             : void radius_msg_free(struct radius_msg *msg);
     210             : void radius_msg_dump(struct radius_msg *msg);
     211             : int radius_msg_finish(struct radius_msg *msg, const u8 *secret,
     212             :                       size_t secret_len);
     213             : int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret,
     214             :                           size_t secret_len, const u8 *req_authenticator);
     215             : int radius_msg_finish_das_resp(struct radius_msg *msg, const u8 *secret,
     216             :                                size_t secret_len,
     217             :                                const struct radius_hdr *req_hdr);
     218             : void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret,
     219             :                             size_t secret_len);
     220             : void radius_msg_finish_acct_resp(struct radius_msg *msg, const u8 *secret,
     221             :                                  size_t secret_len,
     222             :                                  const u8 *req_authenticator);
     223             : int radius_msg_verify_acct_req(struct radius_msg *msg, const u8 *secret,
     224             :                                size_t secret_len);
     225             : int radius_msg_verify_das_req(struct radius_msg *msg, const u8 *secret,
     226             :                                size_t secret_len);
     227             : struct radius_attr_hdr * radius_msg_add_attr(struct radius_msg *msg, u8 type,
     228             :                                              const u8 *data, size_t data_len);
     229             : struct radius_msg * radius_msg_parse(const u8 *data, size_t len);
     230             : int radius_msg_add_eap(struct radius_msg *msg, const u8 *data,
     231             :                        size_t data_len);
     232             : struct wpabuf * radius_msg_get_eap(struct radius_msg *msg);
     233             : int radius_msg_verify(struct radius_msg *msg, const u8 *secret,
     234             :                       size_t secret_len, struct radius_msg *sent_msg,
     235             :                       int auth);
     236             : int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret,
     237             :                                size_t secret_len, const u8 *req_auth);
     238             : int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src,
     239             :                          u8 type);
     240             : void radius_msg_make_authenticator(struct radius_msg *msg,
     241             :                                    const u8 *data, size_t len);
     242             : struct radius_ms_mppe_keys *
     243             : radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg,
     244             :                        const u8 *secret, size_t secret_len);
     245             : struct radius_ms_mppe_keys *
     246             : radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg,
     247             :                           const u8 *secret, size_t secret_len);
     248             : int radius_msg_add_mppe_keys(struct radius_msg *msg,
     249             :                              const u8 *req_authenticator,
     250             :                              const u8 *secret, size_t secret_len,
     251             :                              const u8 *send_key, size_t send_key_len,
     252             :                              const u8 *recv_key, size_t recv_key_len);
     253             : int radius_msg_add_wfa(struct radius_msg *msg, u8 subtype, const u8 *data,
     254             :                        size_t len);
     255             : int radius_user_password_hide(struct radius_msg *msg,
     256             :                               const u8 *data, size_t data_len,
     257             :                               const u8 *secret, size_t secret_len,
     258             :                               u8 *buf, size_t buf_len);
     259             : struct radius_attr_hdr *
     260             : radius_msg_add_attr_user_password(struct radius_msg *msg,
     261             :                                   const u8 *data, size_t data_len,
     262             :                                   const u8 *secret, size_t secret_len);
     263             : int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len);
     264             : int radius_msg_get_vlanid(struct radius_msg *msg);
     265             : char * radius_msg_get_tunnel_password(struct radius_msg *msg, int *keylen,
     266             :                                       const u8 *secret, size_t secret_len,
     267             :                                       struct radius_msg *sent_msg, size_t n);
     268             : 
     269        5028 : static inline int radius_msg_add_attr_int32(struct radius_msg *msg, u8 type,
     270             :                                             u32 value)
     271             : {
     272        5028 :         u32 val = htonl(value);
     273        5028 :         return radius_msg_add_attr(msg, type, (u8 *) &val, 4) != NULL;
     274             : }
     275             : 
     276        3454 : static inline int radius_msg_get_attr_int32(struct radius_msg *msg, u8 type,
     277             :                                             u32 *value)
     278             : {
     279             :         u32 val;
     280             :         int res;
     281        3454 :         res = radius_msg_get_attr(msg, type, (u8 *) &val, 4);
     282        3454 :         if (res != 4)
     283        3453 :                 return -1;
     284             : 
     285           1 :         *value = ntohl(val);
     286           1 :         return 0;
     287             : }
     288             : int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf,
     289             :                             size_t *len, const u8 *start);
     290             : int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len);
     291             : 
     292             : 
     293             : struct radius_attr_data {
     294             :         u8 *data;
     295             :         size_t len;
     296             : };
     297             : 
     298             : struct radius_class_data {
     299             :         struct radius_attr_data *attr;
     300             :         size_t count;
     301             : };
     302             : 
     303             : void radius_free_class(struct radius_class_data *c);
     304             : int radius_copy_class(struct radius_class_data *dst,
     305             :                       const struct radius_class_data *src);
     306             : 
     307             : u8 radius_msg_find_unlisted_attr(struct radius_msg *msg, u8 *attrs);
     308             : 
     309             : #endif /* RADIUS_H */

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