/usr/include/freeradius/libradius.h is in libfreeradius-dev 2.1.12+dfsg-1.2ubuntu8.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#define LIBRADIUS_H
/*
* libradius.h Structures and prototypes
* for the radius library.
*
* Version: $Id$
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* Copyright 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008 The FreeRADIUS server project
*/
#include <freeradius/ident.h>
RCSIDH(libradius_h, "$Id$")
#include <freeradius/missing.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <freeradius/radius.h>
#include <freeradius/token.h>
#include <freeradius/hash.h>
#ifdef SIZEOF_UNSIGNED_INT
#if SIZEOF_UNSIGNED_INT != 4
#error FATAL: sizeof(unsigned int) != 4
#endif
#endif
/*
* Include for modules.
*/
#include <freeradius/sha1.h>
#include <freeradius/md4.h>
#ifdef __cplusplus
extern "C" {
#endif
#define EAP_START 2
#define AUTH_VECTOR_LEN 16
#define CHAP_VALUE_LENGTH 16
#define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
# define VENDOR(x) ((x >> 16) & 0xffff)
#ifdef _LIBRADIUS
# define AUTH_HDR_LEN 20
# define VENDORPEC_USR 429
#define VENDORPEC_LUCENT 4846
#define VENDORPEC_STARENT 8164
# define DEBUG if (fr_debug_flag && fr_log_fp) fr_printf_log
# define debug_pair(vp) do { if (fr_debug_flag && fr_log_fp) { \
vp_print(fr_log_fp, vp); \
} \
} while(0)
# define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
# define TAG_VALID_ZERO(x) ((x) < 0x20)
# define TAG_ANY -128 /* minimum signed char */
#endif
#if defined(__GNUC__)
# define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
# define NEVER_RETURNS __attribute__ ((noreturn))
# define UNUSED __attribute__ ((unused))
# define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
#else
# define PRINTF_LIKE(n) /* ignore */
# define NEVER_RETURNS /* ignore */
# define UNUSED /* ignore */
# define BLANK_FORMAT ""
#endif
typedef struct attr_flags {
unsigned int addport : 1; /* add NAS-Port to IP address */
unsigned int has_tag : 1; /* tagged attribute */
unsigned int do_xlat : 1; /* strvalue is dynamic */
unsigned int unknown_attr : 1; /* not in dictionary */
unsigned int array : 1; /* pack multiples into 1 attr */
unsigned int has_value : 1; /* has a value */
unsigned int has_value_alias : 1; /* has a value alias */
unsigned int has_tlv : 1; /* has sub attributes */
unsigned int is_tlv : 1; /* is a sub attribute */
unsigned int encoded : 1; /* has been put into packet */
int8_t tag; /* tag for tunneled attributes */
uint8_t encrypt; /* encryption method */
} ATTR_FLAGS;
/*
* Values of the encryption flags.
*/
#define FLAG_ENCRYPT_NONE (0)
#define FLAG_ENCRYPT_USER_PASSWORD (1)
#define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
#define FLAG_ENCRYPT_ASCEND_SECRET (3)
typedef struct dict_attr {
unsigned int attr;
int type;
int vendor;
ATTR_FLAGS flags;
char name[1];
} DICT_ATTR;
typedef struct dict_value {
unsigned int attr;
int value;
char name[1];
} DICT_VALUE;
typedef struct dict_vendor {
int vendorpec;
int type; /* length of type data */
int length; /* length of length data */
int flags;
char name[1];
} DICT_VENDOR;
typedef union value_pair_data {
char strvalue[MAX_STRING_LEN];
uint8_t octets[MAX_STRING_LEN];
struct in_addr ipaddr;
struct in6_addr ipv6addr;
uint32_t date;
uint32_t integer;
int32_t sinteger;
uint8_t filter[32];
uint8_t ifid[8]; /* struct? */
uint8_t ipv6prefix[18]; /* struct? */
uint8_t ether[6];
uint8_t *tlv;
} VALUE_PAIR_DATA;
typedef struct value_pair {
const char *name;
int attribute;
int vendor;
int type;
size_t length; /* of data */
#ifdef __cplusplus
/*
* C++ hackery. The server and modules are all C, so
* the defs here don't affect them. But any C++ code
* gets excited over "operator", so we change the name.
*/
FR_TOKEN op_token;
#else
FR_TOKEN operator;
#endif
ATTR_FLAGS flags;
struct value_pair *next;
uint32_t lvalue;
VALUE_PAIR_DATA data;
} VALUE_PAIR;
#define vp_strvalue data.strvalue
#define vp_octets data.octets
#define vp_ipv6addr data.ipv6addr
#define vp_ifid data.ifid
#define vp_ipv6prefix data.ipv6prefix
#define vp_filter data.filter
#define vp_ether data.ether
#define vp_signed data.sinteger
#define vp_tlv data.tlv
#if 0
#define vp_ipaddr data.ipaddr.s_addr
#define vp_date data.date
#define vp_integer data.integer
#else
/*
* These are left as lvalue until we audit the source for code
* that prints to vp_strvalue for integer/ipaddr/date types.
*/
#define vp_ipaddr lvalue
#define vp_date lvalue
#define vp_integer lvalue
#endif
typedef struct fr_ipaddr_t {
int af; /* address family */
union {
struct in_addr ip4addr;
struct in6_addr ip6addr; /* maybe defined in missing.h */
} ipaddr;
uint32_t scope; /* for IPv6 */
} fr_ipaddr_t;
/*
* vector: Request authenticator from access-request packet
* Put in there by rad_decode, and must be put in the
* response RADIUS_PACKET as well before calling rad_send
*
* verified: Filled in by rad_decode for accounting-request packets
*
* data,data_len: Used between rad_recv and rad_decode.
*/
typedef struct radius_packet {
int sockfd;
fr_ipaddr_t src_ipaddr;
fr_ipaddr_t dst_ipaddr;
uint16_t src_port;
uint16_t dst_port;
int id;
unsigned int code;
uint32_t hash;
uint8_t vector[AUTH_VECTOR_LEN];
time_t timestamp;
uint8_t *data;
int data_len;
VALUE_PAIR *vps;
ssize_t offset;
} RADIUS_PACKET;
/*
* Printing functions.
*/
int fr_utf8_char(const uint8_t *str);
size_t fr_print_string(const char *in, size_t inlen,
char *out, size_t outlen);
int vp_prints_value(char *out, size_t outlen,
VALUE_PAIR *vp, int delimitst);
const char *vp_print_name(char *buffer, size_t bufsize, int attr);
int vp_prints(char *out, size_t outlen, VALUE_PAIR *vp);
void vp_print(FILE *, VALUE_PAIR *);
void vp_printlist(FILE *, VALUE_PAIR *);
#define fprint_attr_val vp_print
/*
* Dictionary functions.
*/
int dict_addvendor(const char *name, int value);
int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
int dict_addvalue(const char *namestr, const char *attrstr, int value);
int dict_init(const char *dir, const char *fn);
void dict_free(void);
DICT_ATTR *dict_attrbyvalue(unsigned int attr);
DICT_ATTR *dict_attrbyname(const char *attr);
DICT_VALUE *dict_valbyattr(unsigned int attr, int val);
DICT_VALUE *dict_valbyname(unsigned int attr, const char *val);
int dict_vendorbyname(const char *name);
DICT_VENDOR *dict_vendorbyvalue(int vendor);
#if 1 /* FIXME: compat */
#define dict_attrget dict_attrbyvalue
#define dict_attrfind dict_attrbyname
#define dict_valfind dict_valbyname
/*#define dict_valget dict_valbyattr almost but not quite*/
#endif
/* get around diffrent ctime_r styles */
#ifdef CTIMERSTYLE
#if CTIMERSTYLE == SOLARISSTYLE
#define CTIME_R(a,b,c) ctime_r(a,b,c)
#else
#define CTIME_R(a,b,c) ctime_r(a,b)
#endif
#else
#define CTIME_R(a,b,c) ctime_r(a,b)
#endif
/* md5.c */
void fr_md5_calc(uint8_t *, const uint8_t *, unsigned int);
/* hmac.c */
void fr_hmac_md5(const uint8_t *text, int text_len,
const uint8_t *key, int key_len,
unsigned char *digest);
/* hmacsha1.c */
void fr_hmac_sha1(const uint8_t *text, int text_len,
const uint8_t *key, int key_len,
uint8_t *digest);
/* radius.c */
int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
int rad_packet_ok(RADIUS_PACKET *packet, int flags);
RADIUS_PACKET *rad_recv(int fd, int flags);
ssize_t rad_recv_header(int sockfd, fr_ipaddr_t *src_ipaddr, int *src_port,
int *code);
void rad_recv_discard(int sockfd);
int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
const char *secret);
int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
const char *secret);
int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
const char *secret);
int rad_digest_cmp(const uint8_t *a, const uint8_t *b, size_t length);
RADIUS_PACKET *rad_alloc(int newvector);
RADIUS_PACKET *rad_alloc_reply(RADIUS_PACKET *);
void rad_free(RADIUS_PACKET **);
int rad_pwencode(char *encpw, size_t *len, const char *secret,
const uint8_t *vector);
int rad_pwdecode(char *encpw, size_t len, const char *secret,
const uint8_t *vector);
int rad_tunnel_pwencode(char *encpw, size_t *len, const char *secret,
const uint8_t *vector);
int rad_tunnel_pwdecode(uint8_t *encpw, size_t *len,
const char *secret, const uint8_t *vector);
int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
int id, VALUE_PAIR *password);
VALUE_PAIR *rad_attr2vp(const RADIUS_PACKET *packet, const RADIUS_PACKET *original,
const char *secret, int attribute, int length,
const uint8_t *data);
int rad_vp2attr(const RADIUS_PACKET *packet,
const RADIUS_PACKET *original, const char *secret,
const VALUE_PAIR *vp, uint8_t *ptr);
/* valuepair.c */
VALUE_PAIR *pairalloc(DICT_ATTR *da);
VALUE_PAIR *paircreate_raw(int attr, int type, VALUE_PAIR *vp);
VALUE_PAIR *paircreate(int attr, int type);
void pairfree(VALUE_PAIR **);
void pairbasicfree(VALUE_PAIR *pair);
VALUE_PAIR *pairfind(VALUE_PAIR *, int);
void pairdelete(VALUE_PAIR **, int);
void pairadd(VALUE_PAIR **, VALUE_PAIR *);
void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
VALUE_PAIR *paircopyvp(const VALUE_PAIR *vp);
VALUE_PAIR *paircopy(VALUE_PAIR *vp);
VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
VALUE_PAIR *pairread(const char **ptr, FR_TOKEN *eol);
FR_TOKEN userparse(const char *buffer, VALUE_PAIR **first_pair);
VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
/*
* Error functions.
*/
#ifdef _LIBRADIUS
void fr_strerror_printf(const char *, ...)
#ifdef __GNUC__
__attribute__ ((format (printf, 1, 2)))
#endif
;
#endif
void fr_perror(const char *, ...)
#ifdef __GNUC__
__attribute__ ((format (printf, 1, 2)))
#endif
;
extern const char *fr_strerror(void);
extern int fr_dns_lookups; /* 0 = no dns lookups */
extern int fr_debug_flag; /* 0 = no debugging information */
extern int fr_max_attributes; /* per incoming packet */
#define FR_MAX_PACKET_CODE (52)
extern const char *fr_packet_codes[FR_MAX_PACKET_CODE];
extern FILE *fr_log_fp;
extern void rad_print_hex(RADIUS_PACKET *packet);
void fr_printf_log(const char *, ...)
#ifdef __GNUC__
__attribute__ ((format (printf, 1, 2)))
#endif
;
/*
* Several handy miscellaneous functions.
*/
const char * ip_ntoa(char *, uint32_t);
char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
int rad_lockfd(int fd, int lock_len);
int rad_lockfd_nonblock(int fd, int lock_len);
int rad_unlockfd(int fd, int lock_len);
void fr_bin2hex(const uint8_t *bin, char *hex, size_t len);
size_t fr_hex2bin(const char *hex, uint8_t *bin, size_t len);
#ifndef HAVE_INET_PTON
int inet_pton(int af, const char *src, void *dst);
#endif
#ifndef HAVE_INET_NTOP
const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
#endif
#ifndef HAVE_CLOSEFROM
int closefrom(int fd);
#endif
int fr_ipaddr_cmp(const fr_ipaddr_t *a, const fr_ipaddr_t *b);
int ip_hton(const char *src, int af, fr_ipaddr_t *dst);
const char *ip_ntoh(const fr_ipaddr_t *src, char *dst, size_t cnt);
int fr_ipaddr2sockaddr(const fr_ipaddr_t *ipaddr, int port,
struct sockaddr_storage *sa, socklen_t *salen);
int fr_sockaddr2ipaddr(const struct sockaddr_storage *sa, socklen_t salen,
fr_ipaddr_t *ipaddr, int * port);
#ifdef ASCEND_BINARY
/* filters.c */
int ascend_parse_filter(VALUE_PAIR *pair);
void print_abinary(VALUE_PAIR *vp, char *buffer, size_t len);
#endif /*ASCEND_BINARY*/
/* random numbers in isaac.c */
/* context of random number generator */
typedef struct fr_randctx {
uint32_t randcnt;
uint32_t randrsl[256];
uint32_t randmem[256];
uint32_t randa;
uint32_t randb;
uint32_t randc;
} fr_randctx;
void fr_isaac(fr_randctx *ctx);
void fr_randinit(fr_randctx *ctx, int flag);
uint32_t fr_rand(void); /* like rand(), but better. */
void fr_rand_seed(const void *, size_t ); /* seed the random pool */
/* crypt wrapper from crypt.c */
int fr_crypt_check(const char *key, const char *salt);
/* rbtree.c */
typedef struct rbtree_t rbtree_t;
typedef struct rbnode_t rbnode_t;
rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
void (*freeNode)(void *),
int replace_flag);
void rbtree_free(rbtree_t *tree);
int rbtree_insert(rbtree_t *tree, void *Data);
rbnode_t *rbtree_insertnode(rbtree_t *tree, void *Data);
void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
int rbtree_deletebydata(rbtree_t *tree, const void *data);
rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
void *rbtree_finddata(rbtree_t *tree, const void *Data);
int rbtree_num_elements(rbtree_t *tree);
void *rbtree_min(rbtree_t *tree);
void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
/* callback order for walking */
typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
/*
* The callback should be declared as:
* int callback(void *context, void *data)
*
* The "context" is some user-defined context.
* The "data" is the pointer to the user data in the node,
* NOT the node itself.
*
* It should return 0 if all is OK, and !0 for any error.
* The walking will stop on any error.
*/
int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
/*
* FIFOs
*/
typedef struct fr_fifo_t fr_fifo_t;
typedef void (*fr_fifo_free_t)(void *);
fr_fifo_t *fr_fifo_create(int max_entries, fr_fifo_free_t freeNode);
void fr_fifo_free(fr_fifo_t *fi);
int fr_fifo_push(fr_fifo_t *fi, void *data);
void *fr_fifo_pop(fr_fifo_t *fi);
void *fr_fifo_peek(fr_fifo_t *fi);
int fr_fifo_num_elements(fr_fifo_t *fi);
#ifdef __cplusplus
}
#endif
#include <freeradius/packet.h>
#endif /*LIBRADIUS_H*/
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