299 lines
9.5 KiB
C
299 lines
9.5 KiB
C
/*
|
|
* hostapd / RADIUS message processing
|
|
* Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of BSD
|
|
* license.
|
|
*
|
|
* See README and COPYING for more details.
|
|
*/
|
|
|
|
#ifndef RADIUS_H
|
|
#define RADIUS_H
|
|
|
|
/* RFC 2865 - RADIUS */
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma pack(push, 1)
|
|
#endif /* _MSC_VER */
|
|
|
|
struct radius_hdr {
|
|
u8 code;
|
|
u8 identifier;
|
|
u16 length; /* including this header */
|
|
u8 authenticator[16];
|
|
/* followed by length-20 octets of attributes */
|
|
} STRUCT_PACKED;
|
|
|
|
enum { RADIUS_CODE_ACCESS_REQUEST = 1,
|
|
RADIUS_CODE_ACCESS_ACCEPT = 2,
|
|
RADIUS_CODE_ACCESS_REJECT = 3,
|
|
RADIUS_CODE_ACCOUNTING_REQUEST = 4,
|
|
RADIUS_CODE_ACCOUNTING_RESPONSE = 5,
|
|
RADIUS_CODE_ACCESS_CHALLENGE = 11,
|
|
RADIUS_CODE_STATUS_SERVER = 12,
|
|
RADIUS_CODE_STATUS_CLIENT = 13,
|
|
RADIUS_CODE_RESERVED = 255
|
|
};
|
|
|
|
struct radius_attr_hdr {
|
|
u8 type;
|
|
u8 length; /* including this header */
|
|
/* followed by length-2 octets of attribute value */
|
|
} STRUCT_PACKED;
|
|
|
|
#define RADIUS_MAX_ATTR_LEN (255 - sizeof(struct radius_attr_hdr))
|
|
|
|
enum { RADIUS_ATTR_USER_NAME = 1,
|
|
RADIUS_ATTR_USER_PASSWORD = 2,
|
|
RADIUS_ATTR_NAS_IP_ADDRESS = 4,
|
|
RADIUS_ATTR_NAS_PORT = 5,
|
|
RADIUS_ATTR_FRAMED_MTU = 12,
|
|
RADIUS_ATTR_REPLY_MESSAGE = 18,
|
|
RADIUS_ATTR_STATE = 24,
|
|
RADIUS_ATTR_CLASS = 25,
|
|
RADIUS_ATTR_VENDOR_SPECIFIC = 26,
|
|
RADIUS_ATTR_SESSION_TIMEOUT = 27,
|
|
RADIUS_ATTR_IDLE_TIMEOUT = 28,
|
|
RADIUS_ATTR_TERMINATION_ACTION = 29,
|
|
RADIUS_ATTR_CALLED_STATION_ID = 30,
|
|
RADIUS_ATTR_CALLING_STATION_ID = 31,
|
|
RADIUS_ATTR_NAS_IDENTIFIER = 32,
|
|
RADIUS_ATTR_PROXY_STATE = 33,
|
|
RADIUS_ATTR_ACCT_STATUS_TYPE = 40,
|
|
RADIUS_ATTR_ACCT_DELAY_TIME = 41,
|
|
RADIUS_ATTR_ACCT_INPUT_OCTETS = 42,
|
|
RADIUS_ATTR_ACCT_OUTPUT_OCTETS = 43,
|
|
RADIUS_ATTR_ACCT_SESSION_ID = 44,
|
|
RADIUS_ATTR_ACCT_AUTHENTIC = 45,
|
|
RADIUS_ATTR_ACCT_SESSION_TIME = 46,
|
|
RADIUS_ATTR_ACCT_INPUT_PACKETS = 47,
|
|
RADIUS_ATTR_ACCT_OUTPUT_PACKETS = 48,
|
|
RADIUS_ATTR_ACCT_TERMINATE_CAUSE = 49,
|
|
RADIUS_ATTR_ACCT_MULTI_SESSION_ID = 50,
|
|
RADIUS_ATTR_ACCT_LINK_COUNT = 51,
|
|
RADIUS_ATTR_ACCT_INPUT_GIGAWORDS = 52,
|
|
RADIUS_ATTR_ACCT_OUTPUT_GIGAWORDS = 53,
|
|
RADIUS_ATTR_EVENT_TIMESTAMP = 55,
|
|
RADIUS_ATTR_NAS_PORT_TYPE = 61,
|
|
RADIUS_ATTR_TUNNEL_TYPE = 64,
|
|
RADIUS_ATTR_TUNNEL_MEDIUM_TYPE = 65,
|
|
RADIUS_ATTR_CONNECT_INFO = 77,
|
|
RADIUS_ATTR_EAP_MESSAGE = 79,
|
|
RADIUS_ATTR_MESSAGE_AUTHENTICATOR = 80,
|
|
RADIUS_ATTR_TUNNEL_PRIVATE_GROUP_ID = 81,
|
|
RADIUS_ATTR_ACCT_INTERIM_INTERVAL = 85,
|
|
RADIUS_ATTR_CHARGEABLE_USER_IDENTITY = 89,
|
|
RADIUS_ATTR_NAS_IPV6_ADDRESS = 95
|
|
};
|
|
|
|
|
|
/* Termination-Action */
|
|
#define RADIUS_TERMINATION_ACTION_DEFAULT 0
|
|
#define RADIUS_TERMINATION_ACTION_RADIUS_REQUEST 1
|
|
|
|
/* NAS-Port-Type */
|
|
#define RADIUS_NAS_PORT_TYPE_IEEE_802_11 19
|
|
|
|
/* Acct-Status-Type */
|
|
#define RADIUS_ACCT_STATUS_TYPE_START 1
|
|
#define RADIUS_ACCT_STATUS_TYPE_STOP 2
|
|
#define RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE 3
|
|
#define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON 7
|
|
#define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF 8
|
|
|
|
/* Acct-Authentic */
|
|
#define RADIUS_ACCT_AUTHENTIC_RADIUS 1
|
|
#define RADIUS_ACCT_AUTHENTIC_LOCAL 2
|
|
#define RADIUS_ACCT_AUTHENTIC_REMOTE 3
|
|
|
|
/* Acct-Terminate-Cause */
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST 1
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_LOST_CARRIER 2
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_LOST_SERVICE 3
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT 4
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT 5
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_RESET 6
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT 7
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_ERROR 8
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_NAS_ERROR 9
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REQUEST 10
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT 11
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_UNNEEDED 12
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_PREEMPTED 13
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_SUSPENDED 14
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_SERVICE_UNAVAILABLE 15
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_CALLBACK 16
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_USER_ERROR 17
|
|
#define RADIUS_ACCT_TERMINATE_CAUSE_HOST_REQUEST 18
|
|
|
|
#define RADIUS_TUNNEL_TAGS 32
|
|
|
|
/* Tunnel-Type */
|
|
#define RADIUS_TUNNEL_TYPE_PPTP 1
|
|
#define RADIUS_TUNNEL_TYPE_L2TP 3
|
|
#define RADIUS_TUNNEL_TYPE_IPIP 7
|
|
#define RADIUS_TUNNEL_TYPE_GRE 10
|
|
#define RADIUS_TUNNEL_TYPE_VLAN 13
|
|
|
|
/* Tunnel-Medium-Type */
|
|
#define RADIUS_TUNNEL_MEDIUM_TYPE_IPV4 1
|
|
#define RADIUS_TUNNEL_MEDIUM_TYPE_IPV6 2
|
|
#define RADIUS_TUNNEL_MEDIUM_TYPE_802 6
|
|
|
|
|
|
struct radius_attr_vendor {
|
|
u8 vendor_type;
|
|
u8 vendor_length;
|
|
} STRUCT_PACKED;
|
|
|
|
#define RADIUS_VENDOR_ID_CISCO 9
|
|
#define RADIUS_CISCO_AV_PAIR 1
|
|
|
|
/* RFC 2548 - Microsoft Vendor-specific RADIUS Attributes */
|
|
#define RADIUS_VENDOR_ID_MICROSOFT 311
|
|
|
|
enum { RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY = 16,
|
|
RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY = 17
|
|
};
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma pack(pop)
|
|
#endif /* _MSC_VER */
|
|
|
|
struct radius_ms_mppe_keys {
|
|
u8 *send;
|
|
size_t send_len;
|
|
u8 *recv;
|
|
size_t recv_len;
|
|
};
|
|
|
|
|
|
/* RADIUS message structure for new and parsed messages */
|
|
struct radius_msg {
|
|
unsigned char *buf;
|
|
size_t buf_size; /* total size allocated for buf */
|
|
size_t buf_used; /* bytes used in buf */
|
|
|
|
struct radius_hdr *hdr;
|
|
|
|
size_t *attr_pos; /* array of indexes to attributes (number of bytes
|
|
* from buf to the beginning of
|
|
* struct radius_attr_hdr). */
|
|
size_t attr_size; /* total size of the attribute pointer array */
|
|
size_t attr_used; /* total number of attributes in the array */
|
|
};
|
|
|
|
|
|
/* Default size to be allocated for new RADIUS messages */
|
|
#define RADIUS_DEFAULT_MSG_SIZE 1024
|
|
|
|
/* Default size to be allocated for attribute array */
|
|
#define RADIUS_DEFAULT_ATTR_COUNT 16
|
|
|
|
|
|
/* MAC address ASCII format for IEEE 802.1X use
|
|
* (draft-congdon-radius-8021x-20.txt) */
|
|
#define RADIUS_802_1X_ADDR_FORMAT "%02X-%02X-%02X-%02X-%02X-%02X"
|
|
/* MAC address ASCII format for non-802.1X use */
|
|
#define RADIUS_ADDR_FORMAT "%02x%02x%02x%02x%02x%02x"
|
|
|
|
struct radius_msg *radius_msg_new(u8 code, u8 identifier);
|
|
int radius_msg_initialize(struct radius_msg *msg, size_t init_len);
|
|
void radius_msg_set_hdr(struct radius_msg *msg, u8 code, u8 identifier);
|
|
void radius_msg_free(struct radius_msg *msg);
|
|
void radius_msg_dump(struct radius_msg *msg);
|
|
int radius_msg_finish(struct radius_msg *msg, const u8 *secret,
|
|
size_t secret_len);
|
|
int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret,
|
|
size_t secret_len, const u8 *req_authenticator);
|
|
void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret,
|
|
size_t secret_len);
|
|
struct radius_attr_hdr *radius_msg_add_attr(struct radius_msg *msg, u8 type,
|
|
const u8 *data, size_t data_len);
|
|
struct radius_msg *radius_msg_parse(const u8 *data, size_t len);
|
|
int radius_msg_add_eap(struct radius_msg *msg, const u8 *data,
|
|
size_t data_len);
|
|
u8 *radius_msg_get_eap(struct radius_msg *msg, size_t *len);
|
|
int radius_msg_verify(struct radius_msg *msg, const u8 *secret,
|
|
size_t secret_len, struct radius_msg *sent_msg,
|
|
int auth);
|
|
int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret,
|
|
size_t secret_len, const u8 *req_auth);
|
|
int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src,
|
|
u8 type);
|
|
void radius_msg_make_authenticator(struct radius_msg *msg,
|
|
const u8 *data, size_t len);
|
|
struct radius_ms_mppe_keys *
|
|
radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg,
|
|
const u8 *secret, size_t secret_len);
|
|
struct radius_ms_mppe_keys *
|
|
radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg,
|
|
const u8 *secret, size_t secret_len);
|
|
int radius_msg_add_mppe_keys(struct radius_msg *msg,
|
|
const u8 *req_authenticator,
|
|
const u8 *secret, size_t secret_len,
|
|
const u8 *send_key, size_t send_key_len,
|
|
const u8 *recv_key, size_t recv_key_len);
|
|
struct radius_attr_hdr *
|
|
radius_msg_add_attr_user_password(struct radius_msg *msg,
|
|
const u8 *data, size_t data_len,
|
|
const u8 *secret, size_t secret_len);
|
|
int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len);
|
|
int radius_msg_get_vlanid(struct radius_msg *msg);
|
|
|
|
static inline int radius_msg_add_attr_int32(struct radius_msg *msg, u8 type,
|
|
u32 value)
|
|
{
|
|
u32 val = htonl(value);
|
|
return radius_msg_add_attr(msg, type, (u8 *) &val, 4) != NULL;
|
|
}
|
|
|
|
static inline int radius_msg_get_attr_int32(struct radius_msg *msg, u8 type,
|
|
u32 *value)
|
|
{
|
|
u32 val;
|
|
int res;
|
|
res = radius_msg_get_attr(msg, type, (u8 *) &val, 4);
|
|
if (res != 4)
|
|
return -1;
|
|
|
|
*value = ntohl(val);
|
|
return 0;
|
|
}
|
|
int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf,
|
|
size_t *len, const u8 *start);
|
|
int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len);
|
|
|
|
|
|
struct radius_attr_data {
|
|
u8 *data;
|
|
size_t len;
|
|
};
|
|
|
|
struct radius_class_data {
|
|
struct radius_attr_data *attr;
|
|
size_t count;
|
|
};
|
|
|
|
#ifndef CONFIG_NO_RADIUS
|
|
void radius_free_class(struct radius_class_data *c);
|
|
int radius_copy_class(struct radius_class_data *dst,
|
|
const struct radius_class_data *src);
|
|
#else /* CONFIG_NO_RADIUS */
|
|
static inline void radius_free_class(struct radius_class_data *c)
|
|
{
|
|
}
|
|
|
|
static inline int radius_copy_class(struct radius_class_data *dst,
|
|
const struct radius_class_data *src)
|
|
{
|
|
return -1;
|
|
}
|
|
#endif /* CONFIG_NO_RADIUS */
|
|
|
|
#endif /* RADIUS_H */
|