5 * libradius.h Structures and prototypes
6 * for the radius library.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 * Copyright 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008 The FreeRADIUS server project
27 #include <freeradius-devel/ident.h>
28 RCSIDH(libradius_h, "$Id$")
30 #include <freeradius-devel/missing.h>
40 #include <freeradius-devel/radius.h>
41 #include <freeradius-devel/token.h>
42 #include <freeradius-devel/hash.h>
44 #ifdef SIZEOF_UNSIGNED_INT
45 #if SIZEOF_UNSIGNED_INT != 4
46 #error FATAL: sizeof(unsigned int) != 4
51 * Include for modules.
53 #include <freeradius-devel/sha1.h>
54 #include <freeradius-devel/md4.h>
62 #define AUTH_VECTOR_LEN 16
63 #define CHAP_VALUE_LENGTH 16
64 #define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
67 # define AUTH_HDR_LEN 20
68 # define VENDORPEC_USR 429
69 #define VENDORPEC_LUCENT 4846
70 #define VENDORPEC_STARENT 8164
71 # define DEBUG if (fr_debug_flag && fr_log_fp) fr_printf_log
72 # define debug_pair(vp) do { if (fr_debug_flag && fr_log_fp) { \
73 fputc('\t', fr_log_fp); \
74 vp_print(fr_log_fp, vp); \
75 fputc('\n', fr_log_fp); \
78 # define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
79 # define TAG_VALID_ZERO(x) ((x) < 0x20)
80 # define TAG_ANY -128 /* minimum signed char */
84 # define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
85 # define NEVER_RETURNS __attribute__ ((noreturn))
86 # define UNUSED __attribute__ ((unused))
87 # define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
89 # define PRINTF_LIKE(n) /* ignore */
90 # define NEVER_RETURNS /* ignore */
91 # define UNUSED /* ignore */
92 # define BLANK_FORMAT ""
95 typedef struct attr_flags {
96 unsigned int addport : 1; /* add NAS-Port to IP address */
97 unsigned int has_tag : 1; /* tagged attribute */
98 unsigned int do_xlat : 1; /* strvalue is dynamic */
99 unsigned int unknown_attr : 1; /* not in dictionary */
100 unsigned int array : 1; /* pack multiples into 1 attr */
101 unsigned int has_value : 1; /* has a value */
102 unsigned int has_value_alias : 1; /* has a value alias */
103 unsigned int has_tlv : 1; /* has sub attributes */
104 unsigned int is_tlv : 1; /* is a sub attribute */
105 unsigned int encoded : 1; /* has been put into packet */
107 int8_t tag; /* tag for tunneled attributes */
108 uint8_t encrypt; /* encryption method */
112 * Values of the encryption flags.
114 #define FLAG_ENCRYPT_NONE (0)
115 #define FLAG_ENCRYPT_USER_PASSWORD (1)
116 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
117 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
119 typedef struct dict_attr {
127 typedef struct dict_value {
134 typedef struct dict_vendor {
136 int type; /* length of type data */
137 int length; /* length of length data */
142 typedef union value_pair_data {
143 char strvalue[MAX_STRING_LEN];
144 uint8_t octets[MAX_STRING_LEN];
145 struct in_addr ipaddr;
146 struct in6_addr ipv6addr;
151 uint8_t ifid[8]; /* struct? */
152 uint8_t ipv6prefix[18]; /* struct? */
157 typedef struct value_pair {
159 unsigned int attribute;
162 size_t length; /* of data */
165 struct value_pair *next;
167 VALUE_PAIR_DATA data;
169 #define vp_strvalue data.strvalue
170 #define vp_octets data.octets
171 #define vp_ipv6addr data.ipv6addr
172 #define vp_ifid data.ifid
173 #define vp_ipv6prefix data.ipv6prefix
174 #define vp_filter data.filter
175 #define vp_ether data.ether
176 #define vp_signed data.sinteger
177 #define vp_tlv data.tlv
180 #define vp_ipaddr data.ipaddr.s_addr
181 #define vp_date data.date
182 #define vp_integer data.integer
185 * These are left as lvalue until we audit the source for code
186 * that prints to vp_strvalue for integer/ipaddr/date types.
188 #define vp_ipaddr lvalue
189 #define vp_date lvalue
190 #define vp_integer lvalue
194 typedef struct fr_ipaddr_t {
195 int af; /* address family */
197 struct in_addr ip4addr;
198 struct in6_addr ip6addr; /* maybe defined in missing.h */
200 uint32_t scope; /* for IPv6 */
204 * vector: Request authenticator from access-request packet
205 * Put in there by rad_decode, and must be put in the
206 * response RADIUS_PACKET as well before calling rad_send
208 * verified: Filled in by rad_decode for accounting-request packets
210 * data,data_len: Used between rad_recv and rad_decode.
212 typedef struct radius_packet {
214 fr_ipaddr_t src_ipaddr;
215 fr_ipaddr_t dst_ipaddr;
221 uint8_t vector[AUTH_VECTOR_LEN];
233 * Printing functions.
235 int fr_utf8_char(const uint8_t *str);
236 void fr_print_string(const char *in, size_t inlen,
237 char *out, size_t outlen);
238 int vp_prints_value(char *out, size_t outlen,
239 VALUE_PAIR *vp, int delimitst);
240 const char *vp_print_name(char *buffer, size_t bufsize, int attr, int vendor);
241 int vp_prints(char *out, size_t outlen, VALUE_PAIR *vp);
242 void vp_print(FILE *, VALUE_PAIR *);
243 void vp_printlist(FILE *, VALUE_PAIR *);
244 #define fprint_attr_val vp_print
247 * Dictionary functions.
249 int dict_addvendor(const char *name, int value);
250 int dict_addattr(const char *name, int attr, int vendor, int type, ATTR_FLAGS flags);
251 int dict_addvalue(const char *namestr, const char *attrstr, int value);
252 int dict_init(const char *dir, const char *fn);
253 void dict_free(void);
254 DICT_ATTR *dict_attrbyvalue(unsigned int attr, unsigned int vendor);
255 DICT_ATTR *dict_attrbyname(const char *attr);
256 DICT_VALUE *dict_valbyattr(unsigned int attr, unsigned int vendor, int val);
257 DICT_VALUE *dict_valbyname(unsigned int attr, unsigned int vendor, const char *val);
258 int dict_vendorbyname(const char *name);
259 DICT_VENDOR *dict_vendorbyvalue(int vendor);
261 #if 1 /* FIXME: compat */
262 #define dict_attrget dict_attrbyvalue
263 #define dict_attrfind dict_attrbyname
264 #define dict_valfind dict_valbyname
265 /*#define dict_valget dict_valbyattr almost but not quite*/
268 /* get around diffrent ctime_r styles */
270 #if CTIMERSTYLE == SOLARISSTYLE
271 #define CTIME_R(a,b,c) ctime_r(a,b,c)
273 #define CTIME_R(a,b,c) ctime_r(a,b)
276 #define CTIME_R(a,b,c) ctime_r(a,b)
281 void fr_md5_calc(uint8_t *, const uint8_t *, unsigned int);
285 void fr_hmac_md5(const uint8_t *text, int text_len,
286 const uint8_t *key, int key_len,
287 unsigned char *digest);
291 void fr_hmac_sha1(const uint8_t *text, int text_len,
292 const uint8_t *key, int key_len,
296 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
297 int rad_packet_ok(RADIUS_PACKET *packet, int flags);
298 RADIUS_PACKET *rad_recv(int fd, int flags);
299 ssize_t rad_recv_header(int sockfd, fr_ipaddr_t *src_ipaddr, int *src_port,
301 void rad_recv_discard(int sockfd);
302 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
304 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
305 int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
307 int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
310 RADIUS_PACKET *rad_alloc(int newvector);
311 RADIUS_PACKET *rad_alloc_reply(RADIUS_PACKET *);
312 void rad_free(RADIUS_PACKET **);
313 int rad_pwencode(char *encpw, size_t *len, const char *secret,
314 const uint8_t *vector);
315 int rad_pwdecode(char *encpw, size_t len, const char *secret,
316 const uint8_t *vector);
317 int rad_tunnel_pwencode(char *encpw, size_t *len, const char *secret,
318 const uint8_t *vector);
319 int rad_tunnel_pwdecode(uint8_t *encpw, size_t *len,
320 const char *secret, const uint8_t *vector);
321 int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
322 int id, VALUE_PAIR *password);
323 VALUE_PAIR *rad_attr2vp(const RADIUS_PACKET *packet, const RADIUS_PACKET *original,
324 const char *secret, int attribute, int vendor,
325 int length, const uint8_t *data);
326 int rad_vp2attr(const RADIUS_PACKET *packet,
327 const RADIUS_PACKET *original, const char *secret,
328 const VALUE_PAIR *vp, uint8_t *ptr, size_t room);
331 VALUE_PAIR *pairalloc(DICT_ATTR *da);
332 VALUE_PAIR *paircreate(int attr, int vendor, int type);
333 void pairfree(VALUE_PAIR **);
334 void pairbasicfree(VALUE_PAIR *pair);
335 VALUE_PAIR *pairfind(VALUE_PAIR *, int attr, int vendor);
336 void pairdelete(VALUE_PAIR **, int attr, int vendor);
337 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
338 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
339 int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
340 VALUE_PAIR *paircopyvp(const VALUE_PAIR *vp);
341 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
342 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr, int vendor);
343 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
344 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr, int vendor);
345 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
346 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
347 VALUE_PAIR *pairread(const char **ptr, FR_TOKEN *eol);
348 FR_TOKEN userparse(const char *buffer, VALUE_PAIR **first_pair);
349 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
355 void fr_strerror_printf(const char *, ...)
357 __attribute__ ((format (printf, 1, 2)))
361 void fr_perror(const char *, ...)
363 __attribute__ ((format (printf, 1, 2)))
366 extern const char *fr_strerror(void);
367 extern int fr_dns_lookups; /* 0 = no dns lookups */
368 extern int fr_debug_flag; /* 0 = no debugging information */
369 extern int fr_max_attributes; /* per incoming packet */
370 #define FR_MAX_PACKET_CODE (52)
371 extern const char *fr_packet_codes[FR_MAX_PACKET_CODE];
372 extern FILE *fr_log_fp;
373 void fr_printf_log(const char *, ...)
375 __attribute__ ((format (printf, 1, 2)))
380 * Several handy miscellaneous functions.
382 const char * ip_ntoa(char *, uint32_t);
383 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
384 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
385 int rad_lockfd(int fd, int lock_len);
386 int rad_lockfd_nonblock(int fd, int lock_len);
387 int rad_unlockfd(int fd, int lock_len);
388 void fr_bin2hex(const uint8_t *bin, char *hex, size_t len);
389 size_t fr_hex2bin(const char *hex, uint8_t *bin, size_t len);
390 #ifndef HAVE_INET_PTON
391 int inet_pton(int af, const char *src, void *dst);
393 #ifndef HAVE_INET_NTOP
394 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
396 #ifndef HAVE_CLOSEFROM
397 int closefrom(int fd);
399 int fr_ipaddr_cmp(const fr_ipaddr_t *a, const fr_ipaddr_t *b);
401 int ip_hton(const char *src, int af, fr_ipaddr_t *dst);
402 const char *ip_ntoh(const fr_ipaddr_t *src, char *dst, size_t cnt);
403 int fr_ipaddr2sockaddr(const fr_ipaddr_t *ipaddr, int port,
404 struct sockaddr_storage *sa, socklen_t *salen);
405 int fr_sockaddr2ipaddr(const struct sockaddr_storage *sa, socklen_t salen,
406 fr_ipaddr_t *ipaddr, int * port);
411 int ascend_parse_filter(VALUE_PAIR *pair);
412 void print_abinary(VALUE_PAIR *vp, char *buffer, size_t len);
413 #endif /*ASCEND_BINARY*/
415 /* random numbers in isaac.c */
416 /* context of random number generator */
417 typedef struct fr_randctx {
419 uint32_t randrsl[256];
420 uint32_t randmem[256];
426 void fr_isaac(fr_randctx *ctx);
427 void fr_randinit(fr_randctx *ctx, int flag);
428 uint32_t fr_rand(void); /* like rand(), but better. */
429 void fr_rand_seed(const void *, size_t ); /* seed the random pool */
432 /* crypt wrapper from crypt.c */
433 int fr_crypt_check(const char *key, const char *salt);
436 typedef struct rbtree_t rbtree_t;
437 typedef struct rbnode_t rbnode_t;
439 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
440 void (*freeNode)(void *),
442 void rbtree_free(rbtree_t *tree);
443 int rbtree_insert(rbtree_t *tree, void *Data);
444 rbnode_t *rbtree_insertnode(rbtree_t *tree, void *Data);
445 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
446 int rbtree_deletebydata(rbtree_t *tree, const void *data);
447 rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
448 void *rbtree_finddata(rbtree_t *tree, const void *Data);
449 int rbtree_num_elements(rbtree_t *tree);
450 void *rbtree_min(rbtree_t *tree);
451 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
453 /* callback order for walking */
454 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
457 * The callback should be declared as:
458 * int callback(void *context, void *data)
460 * The "context" is some user-defined context.
461 * The "data" is the pointer to the user data in the node,
462 * NOT the node itself.
464 * It should return 0 if all is OK, and !0 for any error.
465 * The walking will stop on any error.
467 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
472 typedef struct fr_fifo_t fr_fifo_t;
473 typedef void (*fr_fifo_free_t)(void *);
474 fr_fifo_t *fr_fifo_create(int max_entries, fr_fifo_free_t freeNode);
475 void fr_fifo_free(fr_fifo_t *fi);
476 int fr_fifo_push(fr_fifo_t *fi, void *data);
477 void *fr_fifo_pop(fr_fifo_t *fi);
478 void *fr_fifo_peek(fr_fifo_t *fi);
479 int fr_fifo_num_elements(fr_fifo_t *fi);
481 #include <freeradius-devel/packet.h>
484 #include <freeradius-devel/tcp.h>
487 #endif /*LIBRADIUS_H*/