2 * This library is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU Lesser General Public
4 * License as published by the Free Software Foundation; either
5 * version 2.1 of the License, or (at your option) any later version.
7 * This library is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10 * Lesser General Public License for more details.
12 * You should have received a copy of the GNU Lesser General Public
13 * License along with this library; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 * @brief Structures and prototypes for the radius library.
24 * @copyright 1999-2008 The FreeRADIUS server project
26 RCSIDH(libradius_h, "$Id$")
28 #include <freeradius-devel/missing.h>
33 * Let any external program building against the library know what
34 * features the library was built with.
36 #include <freeradius-devel/features.h>
43 #include <freeradius-devel/radius.h>
44 #include <freeradius-devel/token.h>
45 #include <freeradius-devel/hash.h>
47 #ifdef SIZEOF_UNSIGNED_INT
48 #if SIZEOF_UNSIGNED_INT != 4
49 #error FATAL: sizeof(unsigned int) != 4
54 * Include for modules.
56 #include <freeradius-devel/sha1.h>
57 #include <freeradius-devel/md4.h>
63 #if defined(WITH_VERIFY_PTR)
65 * Requires typeof(), which is in most modern C compilers.
69 #define VERIFY_VP(_x) do { (void) talloc_get_type_abort(_x, VALUE_PAIR); \
71 (void) talloc_get_type_abort(_x->da, DICT_ATTR); \
76 #define VERIFY_VP(_x) (void) talloc_get_type_abort(_x, VALUE_PAIR)
77 #define VERIFY_PACKET(_x) (void) talloc_get_type_abort(_x, RADIUS_PACKET)
80 #define VERIFY_PACKET(_x)
83 #define AUTH_VECTOR_LEN 16
84 #define CHAP_VALUE_LENGTH 16
85 #define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
86 #define FR_MAX_VENDOR (1 << 24) /* RFC limitations */
89 # define AUTH_HDR_LEN 20
90 # define VENDORPEC_USR 429
91 #define VENDORPEC_LUCENT 4846
92 #define VENDORPEC_STARENT 8164
93 # define DEBUG if (fr_debug_flag && fr_log_fp) fr_printf_log
94 # define debug_pair(vp) do { if (fr_debug_flag && fr_log_fp) { \
95 vp_print(fr_log_fp, vp); \
100 #define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
101 #define TAG_VALID_ZERO(x) ((x) < 0x20)
102 #define TAG_ANY -128 /* minimum signed char */
105 #if defined(__GNUC__)
106 # define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
107 # define NEVER_RETURNS __attribute__ ((noreturn))
108 # define UNUSED __attribute__ ((unused))
109 # define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
111 # define PRINTF_LIKE(n) /* ignore */
112 # define NEVER_RETURNS /* ignore */
113 # define UNUSED /* ignore */
114 # define BLANK_FORMAT ""
117 typedef struct attr_flags {
118 unsigned int is_unknown : 1; //!< Attribute number or vendor is unknown.
119 unsigned int is_tlv : 1; //!< Is a sub attribute.
120 unsigned int vp_free : 1; //!< Should be freed when VALUE_PAIR is freed.
122 unsigned int has_tag : 1; //!< Tagged attribute.
123 unsigned int array : 1; //!< Pack multiples into 1 attr.
124 unsigned int has_value : 1; //!< Has a value.
125 unsigned int has_value_alias : 1; //!< Has a value alias.
126 unsigned int has_tlv : 1; //!< Has sub attributes.
128 unsigned int extended : 1; //!< Extended attribute.
129 unsigned int long_extended : 1; //!< Long format.
130 unsigned int evs : 1; //!< Extended VSA.
131 unsigned int wimax: 1; //!< WiMAX format=1,1,c.
133 unsigned int concat : 1; //!< concatenate multiple instances
134 unsigned int is_pointer : 1; //!< data is a pointer
136 uint8_t encrypt; //!< Ecryption method.
141 * Values of the encryption flags.
143 #define FLAG_ENCRYPT_NONE (0)
144 #define FLAG_ENCRYPT_USER_PASSWORD (1)
145 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
146 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
148 extern const FR_NAME_NUMBER dict_attr_types[];
149 extern const size_t dict_attr_sizes[PW_TYPE_MAX][2];
151 /** dictionary attribute
154 typedef struct dict_attr {
162 /** value of an enumerated attribute
165 typedef struct dict_value {
172 /** dictionary vendor
175 typedef struct dict_vendor {
176 unsigned int vendorpec;
177 size_t type; //!< Length of type data
178 size_t length; //!< Length of length data
183 /** Union containing all data types supported by the server
185 * This union contains all data types that can be represented with VALUE_PAIRs. It may also be used in other parts
186 * of the server where values of different types need to be stored.
188 * PW_TYPE should be an enumeration of the values in this union.
190 typedef union value_data {
191 char const *strvalue; //!< Pointer to UTF-8 string.
192 uint8_t const *octets; //!< Pointer to binary string.
193 struct in_addr ipaddr; //!< IPv4 Address.
194 struct in6_addr ipv6addr; //!< IPv6 Address.
195 uint32_t date; //!< Date (32bit Unix timestamp).
196 uint32_t integer; //!< 32bit unsigned integer.
197 int32_t sinteger; //!< 32bit signed integer.
198 uint64_t integer64; //!< 64bit unsigned integer.
199 size_t filter[32/sizeof(size_t)]; //!< 64bit signed integer.
200 uint8_t ifid[8]; /* struct? */ //!< IPv6 interface ID.
201 uint8_t ipv6prefix[18]; /* struct? */ //!< IPv6 prefix.
202 uint8_t ipv4prefix[6]; /* struct? */ //!< IPv4 prefix.
203 uint8_t ether[6]; //!< Ethernet (MAC) address.
204 uint8_t *tlv; //!< Nested TLV (should go away).
205 void const *ptr; //!< generic pointer.
208 /** The type of value a VALUE_PAIR contains
210 * This is used to add structure to nested VALUE_PAIRs and specifies what type of node it is (set, list, data).
212 * xlat is another type of data node which must first be expanded before use.
214 typedef enum value_type {
215 VT_NONE = 0, //!< VALUE_PAIR has no value.
216 VT_SET, //!< VALUE_PAIR has children.
217 VT_LIST, //!< VALUE_PAIR has multiple values.
218 VT_DATA, //!< VALUE_PAIR has a single value.
219 VT_XLAT //!< valuepair value must be xlat expanded when it's
220 //!< added to VALUE_PAIR tree.
223 /** Stores an attribute, a value and various bits of other data
225 * VALUE_PAIRs are the main data structure used in the server, they specify an attribute, it's children and
228 * They also specify what behaviour should be used when the attribute is merged into a new list/tree.
230 typedef struct value_pair {
231 DICT_ATTR const *da; //!< Dictionary attribute defines the attribute
232 //!< number, vendor and type of the attribute.
234 struct value_pair *next;
236 FR_TOKEN op; //!< Operator to use when moving or inserting
237 //!< valuepair into a list.
239 int8_t tag; //!< Tag value used to group valuepairs.
242 // VALUE_SET *set; //!< Set of child attributes.
243 // VALUE_LIST *list; //!< List of values for
244 //!< multivalued attribute.
245 // value_data_t *data; //!< Value data for this attribute.
247 char const *xlat; //!< Source string for xlat expansion.
250 value_type_t type; //!< Type of pointer in value union.
252 size_t length; //!< of Data field.
256 /** Abstraction to allow iterating over different configurations of VALUE_PAIRs
258 * This allows functions which do not care about the structure of collections of VALUE_PAIRs
259 * to iterate over all members in a collection.
261 * Field within a vp_cursor should not be accessed directly, and vp_cursors should only be
262 * manipulated with the pair* functions.
264 typedef struct vp_cursor {
266 VALUE_PAIR *found; //!< pairfind marker.
267 VALUE_PAIR *last; //!< Temporary only used for pairinsert
268 VALUE_PAIR *current; //!< The current attribute.
269 VALUE_PAIR *next; //!< Next attribute to process.
272 /** A VALUE_PAIR in string format.
274 * Used to represent pairs in the legacy 'users' file format.
276 typedef struct value_pair_raw {
277 char l_opand[64]; //!< Left hand side of the pair.
278 char r_opand[1024]; //!< Right hand side of the pair.
280 FR_TOKEN quote; //!< Type of quoting around the r_opand.
282 FR_TOKEN op; //!< Operator.
285 #define vp_strvalue data.strvalue
286 #define vp_octets data.octets
287 #define vp_ipv6addr data.ipv6addr
288 #define vp_ifid data.ifid
289 #define vp_ipv6prefix data.ipv6prefix
290 #define vp_ipv4prefix data.ipv4prefix
291 #define vp_filter data.filter
292 #define vp_ether data.ether
293 #define vp_signed data.sinteger
294 #define vp_tlv data.tlv
295 #define vp_integer64 data.integer64
296 #define vp_ipaddr data.ipaddr.s_addr
297 #define vp_date data.date
298 #define vp_integer data.integer
300 typedef struct fr_ipaddr_t {
301 int af; /* address family */
303 struct in_addr ip4addr;
304 struct in6_addr ip6addr; /* maybe defined in missing.h */
306 uint32_t scope; /* for IPv6 */
310 * vector: Request authenticator from access-request packet
311 * Put in there by rad_decode, and must be put in the
312 * response RADIUS_PACKET as well before calling rad_send
314 * verified: Filled in by rad_decode for accounting-request packets
316 * data,data_len: Used between rad_recv and rad_decode.
318 typedef struct radius_packet {
320 fr_ipaddr_t src_ipaddr;
321 fr_ipaddr_t dst_ipaddr;
326 uint8_t vector[AUTH_VECTOR_LEN];
327 struct timeval timestamp;
338 * Printing functions.
340 int fr_utf8_char(uint8_t const *str);
341 size_t fr_print_string(char const *in, size_t inlen,
342 char *out, size_t outlen);
343 size_t vp_prints_value(char *out, size_t outlen, VALUE_PAIR const *vp, int8_t quote);
344 char *vp_aprinttype(TALLOC_CTX *ctx, PW_TYPE type);
345 char *vp_aprint(TALLOC_CTX *ctx, VALUE_PAIR const *vp);
346 int vp_prints_value_json(char *out, size_t outlen,
347 VALUE_PAIR const *vp);
348 size_t vp_print_name(char *buffer, size_t bufsize,
349 unsigned int attr, unsigned int vendor);
350 int vp_prints(char *out, size_t outlen, VALUE_PAIR const *vp);
351 void vp_print(FILE *, VALUE_PAIR const *);
352 void vp_printlist(FILE *, VALUE_PAIR const *);
353 #define fprint_attr_val vp_print
356 * Dictionary functions.
358 extern const int dict_attr_allowed_chars[256];
359 int str2argv(char *str, char **argv, int max_argc);
360 int dict_str2oid(char const *ptr, unsigned int *pattr,
361 unsigned int *pvendor, int tlv_depth);
362 int dict_addvendor(char const *name, unsigned int value);
363 int dict_addattr(char const *name, int attr, unsigned int vendor, int type, ATTR_FLAGS flags);
364 int dict_addvalue(char const *namestr, char const *attrstr, int value);
365 int dict_init(char const *dir, char const *fn);
366 void dict_free(void);
367 int dict_read(char const *dir, char const *filename);
368 void dict_attr_free(DICT_ATTR const **da);
369 DICT_ATTR const *dict_attr_copy(DICT_ATTR const *da, int vp_free);
370 DICT_ATTR const *dict_attrunknown(unsigned int attr, unsigned int vendor, int vp_free);
371 DICT_ATTR const *dict_attrunknownbyname(char const *attribute, int vp_free);
372 DICT_ATTR const *dict_attrbyvalue(unsigned int attr, unsigned int vendor);
373 DICT_ATTR const *dict_attrbyname(char const *attr);
374 DICT_ATTR const *dict_attrbytype(unsigned int attr, unsigned int vendor,
376 DICT_ATTR const *dict_attrbyparent(DICT_ATTR const *parent, unsigned int attr,
377 unsigned int vendor);
378 int dict_attr_child(DICT_ATTR const *parent,
379 unsigned int *pattr, unsigned int *pvendor);
380 DICT_VALUE *dict_valbyattr(unsigned int attr, unsigned int vendor, int val);
381 DICT_VALUE *dict_valbyname(unsigned int attr, unsigned int vendor, char const *val);
382 char const *dict_valnamebyattr(unsigned int attr, unsigned int vendor, int value);
383 int dict_vendorbyname(char const *name);
384 DICT_VENDOR *dict_vendorbyvalue(int vendor);
386 #if 1 /* FIXME: compat */
387 #define dict_attrget dict_attrbyvalue
388 #define dict_attrfind dict_attrbyname
389 #define dict_valfind dict_valbyname
390 /*#define dict_valget dict_valbyattr almost but not quite*/
395 void fr_md5_calc(uint8_t *, uint8_t const *, unsigned int);
399 void fr_hmac_md5(uint8_t const *text, size_t text_len, uint8_t const *key, size_t key_len, unsigned char *digest);
403 void fr_hmac_sha1(uint8_t const *text, size_t text_len, uint8_t const *key, size_t key_len, uint8_t *digest);
406 int rad_send(RADIUS_PACKET *, RADIUS_PACKET const *, char const *secret);
407 int rad_packet_ok(RADIUS_PACKET *packet, int flags);
408 RADIUS_PACKET *rad_recv(int fd, int flags);
409 ssize_t rad_recv_header(int sockfd, fr_ipaddr_t *src_ipaddr, int *src_port,
411 void rad_recv_discard(int sockfd);
412 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
414 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, char const *secret);
415 int rad_encode(RADIUS_PACKET *packet, RADIUS_PACKET const *original,
417 int rad_sign(RADIUS_PACKET *packet, RADIUS_PACKET const *original,
420 int rad_digest_cmp(uint8_t const *a, uint8_t const *b, size_t length);
421 RADIUS_PACKET *rad_alloc(TALLOC_CTX *ctx, int newvector);
422 RADIUS_PACKET *rad_alloc_reply(TALLOC_CTX *ctx, RADIUS_PACKET *);
423 void rad_free(RADIUS_PACKET **);
424 int rad_pwencode(char *encpw, size_t *len, char const *secret,
425 uint8_t const *vector);
426 int rad_pwdecode(char *encpw, size_t len, char const *secret,
427 uint8_t const *vector);
428 int rad_tunnel_pwencode(char *encpw, size_t *len, char const *secret,
429 uint8_t const *vector);
430 int rad_tunnel_pwdecode(uint8_t *encpw, size_t *len,
431 char const *secret, uint8_t const *vector);
432 int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
433 int id, VALUE_PAIR *password);
435 int rad_attr_ok(RADIUS_PACKET const *packet, RADIUS_PACKET const *original,
437 uint8_t const *data, size_t length);
438 int rad_tlv_ok(uint8_t const *data, size_t length,
439 size_t dv_type, size_t dv_length);
441 ssize_t rad_attr2vp(RADIUS_PACKET *packet, RADIUS_PACKET const *original,
443 uint8_t const *data, size_t length,
446 ssize_t rad_data2vp(unsigned int attribute, unsigned int vendor,
447 uint8_t const *data, size_t length,
450 ssize_t rad_vp2data(VALUE_PAIR const *vp, uint8_t *out, size_t outlen);
452 int rad_vp2extended(RADIUS_PACKET const *packet,
453 RADIUS_PACKET const *original,
454 char const *secret, VALUE_PAIR const **pvp,
455 uint8_t *ptr, size_t room);
456 int rad_vp2wimax(RADIUS_PACKET const *packet,
457 RADIUS_PACKET const *original,
458 char const *secret, VALUE_PAIR const **pvp,
459 uint8_t *ptr, size_t room);
460 int rad_vp2vsa(RADIUS_PACKET const *packet, RADIUS_PACKET const *original,
461 char const *secret, VALUE_PAIR const **pvp, uint8_t *start,
463 int rad_vp2rfc(RADIUS_PACKET const *packet,
464 RADIUS_PACKET const *original,
465 char const *secret, VALUE_PAIR const **pvp,
466 uint8_t *ptr, size_t room);
468 int rad_vp2attr(RADIUS_PACKET const *packet,
469 RADIUS_PACKET const *original, char const *secret,
470 VALUE_PAIR const **pvp, uint8_t *ptr, size_t room);
473 VALUE_PAIR *pairalloc(TALLOC_CTX *ctx, DICT_ATTR const *da);
474 VALUE_PAIR *paircreate(TALLOC_CTX *ctx, unsigned int attr, unsigned int vendor);
475 int pair2unknown(VALUE_PAIR *vp);
476 void pairfree(VALUE_PAIR **);
477 void pairbasicfree(VALUE_PAIR *pair);
478 VALUE_PAIR *pairfind(VALUE_PAIR *, unsigned int attr, unsigned int vendor, int8_t tag);
480 #define paircursor(_x, _y) paircursorc(_x,(VALUE_PAIR const * const *) _y)
481 VALUE_PAIR *paircursorc(vp_cursor_t *cursor, VALUE_PAIR const * const *node);
482 VALUE_PAIR *pairfirst(vp_cursor_t *cursor);
483 VALUE_PAIR *pairfindnext(vp_cursor_t *cursor, unsigned int attr, unsigned int vendor, int8_t tag);
484 VALUE_PAIR *pairnext(vp_cursor_t *cursor);
485 VALUE_PAIR *pairlast(vp_cursor_t *cursor);
486 VALUE_PAIR *paircurrent(vp_cursor_t *cursor);
487 void pairinsert(vp_cursor_t *cursor, VALUE_PAIR *vp);
488 VALUE_PAIR *pairremove(vp_cursor_t *cursor);
489 void pairdelete(VALUE_PAIR **, unsigned int attr, unsigned int vendor, int8_t tag);
490 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
491 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
492 int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
493 int paircmp_op(VALUE_PAIR const *one, FR_TOKEN op, VALUE_PAIR const *two);
494 void pairsort(VALUE_PAIR **vps, bool with_tag);
495 bool pairvalidate(VALUE_PAIR *filter, VALUE_PAIR *list);
496 VALUE_PAIR *paircopyvp(TALLOC_CTX *ctx, VALUE_PAIR const *vp);
497 VALUE_PAIR *paircopyvpdata(TALLOC_CTX *ctx, DICT_ATTR const *da, VALUE_PAIR const *vp);
498 VALUE_PAIR *paircopy(TALLOC_CTX *ctx, VALUE_PAIR *from);
499 VALUE_PAIR *paircopy2(TALLOC_CTX *ctx, VALUE_PAIR *from, unsigned int attr, unsigned int vendor, int8_t tag);
500 void pairmemcpy(VALUE_PAIR *vp, uint8_t const * src, size_t len);
501 void pairstrcpy(VALUE_PAIR *vp, char const * src);
502 void pairsprintf(VALUE_PAIR *vp, char const * fmt, ...)
504 __attribute__ ((format (printf, 2, 3)))
507 void pairmove(TALLOC_CTX *ctx, VALUE_PAIR **to, VALUE_PAIR **from);
508 void pairfilter(TALLOC_CTX *ctx, VALUE_PAIR **to, VALUE_PAIR **from,
509 unsigned int attr, unsigned int vendor, int8_t tag);
510 bool pairparsevalue(VALUE_PAIR *vp, char const *value);
511 VALUE_PAIR *pairmake(TALLOC_CTX *ctx, VALUE_PAIR **vps, char const *attribute, char const *value, FR_TOKEN op);
512 int pairmark_xlat(VALUE_PAIR *vp, char const *value);
513 FR_TOKEN pairread(char const **ptr, VALUE_PAIR_RAW *raw);
514 FR_TOKEN userparse(TALLOC_CTX *ctx, char const *buffer, VALUE_PAIR **head);
515 VALUE_PAIR *readvp2(TALLOC_CTX *ctx, FILE *fp, int *pfiledone, char const *errprefix);
521 void fr_strerror_printf(char const *, ...)
523 __attribute__ ((format (printf, 1, 2)))
527 void fr_perror(char const *, ...)
529 __attribute__ ((format (printf, 1, 2)))
532 extern char const *fr_strerror(void);
533 extern int fr_dns_lookups; /* 0 = no dns lookups */
534 extern int fr_debug_flag; /* 0 = no debugging information */
535 extern int fr_max_attributes; /* per incoming packet */
536 #define FR_MAX_PACKET_CODE (52)
537 extern char const *fr_packet_codes[FR_MAX_PACKET_CODE];
538 extern FILE *fr_log_fp;
539 extern void rad_print_hex(RADIUS_PACKET *packet);
540 void fr_printf_log(char const *, ...)
542 __attribute__ ((format (printf, 1, 2)))
547 * Several handy miscellaneous functions.
549 char const *ip_ntoa(char *, uint32_t);
550 char *ifid_ntoa(char *buffer, size_t size, uint8_t const *ifid);
551 uint8_t *ifid_aton(char const *ifid_str, uint8_t *ifid);
552 int rad_lockfd(int fd, int lock_len);
553 int rad_lockfd_nonblock(int fd, int lock_len);
554 int rad_unlockfd(int fd, int lock_len);
555 size_t fr_bin2hex(char *hex, uint8_t const *bin, size_t inlen);
556 size_t fr_hex2bin(uint8_t *bin, char const *hex, size_t outlen);
557 int fr_ipaddr_cmp(fr_ipaddr_t const *a, fr_ipaddr_t const *b);
559 int ip_hton(char const *src, int af, fr_ipaddr_t *dst);
560 char const *ip_ntoh(fr_ipaddr_t const *src, char *dst, size_t cnt);
561 int fr_ipaddr2sockaddr(fr_ipaddr_t const *ipaddr, int port,
562 struct sockaddr_storage *sa, socklen_t *salen);
563 int fr_sockaddr2ipaddr(struct sockaddr_storage const *sa, socklen_t salen,
564 fr_ipaddr_t *ipaddr, int * port);
567 #ifdef WITH_ASCEND_BINARY
569 int ascend_parse_filter(VALUE_PAIR *pair);
570 void print_abinary(VALUE_PAIR const *vp, char *buffer, size_t len, int8_t quote);
571 #endif /*WITH_ASCEND_BINARY*/
573 /* random numbers in isaac.c */
574 /* context of random number generator */
575 typedef struct fr_randctx {
577 uint32_t randrsl[256];
578 uint32_t randmem[256];
584 void fr_isaac(fr_randctx *ctx);
585 void fr_randinit(fr_randctx *ctx, int flag);
586 uint32_t fr_rand(void); /* like rand(), but better. */
587 void fr_rand_seed(void const *, size_t ); /* seed the random pool */
590 /* crypt wrapper from crypt.c */
591 int fr_crypt_check(char const *key, char const *salt);
594 typedef struct rbtree_t rbtree_t;
595 typedef struct rbnode_t rbnode_t;
597 #define RBTREE_FLAG_NONE (0)
598 #define RBTREE_FLAG_REPLACE (1 << 0)
599 #define RBTREE_FLAG_LOCK (1 << 1)
600 rbtree_t *rbtree_create(int (*Compare)(void const *, void const *),
601 void (*freeNode)(void *),
603 void rbtree_free(rbtree_t *tree);
604 bool rbtree_insert(rbtree_t *tree, void *Data);
605 rbnode_t *rbtree_insertnode(rbtree_t *tree, void *Data);
606 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
607 bool rbtree_deletebydata(rbtree_t *tree, void const *data);
608 rbnode_t *rbtree_find(rbtree_t *tree, void const *Data);
609 void *rbtree_finddata(rbtree_t *tree, void const *Data);
610 int rbtree_num_elements(rbtree_t *tree);
611 void *rbtree_min(rbtree_t *tree);
612 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
614 /* callback order for walking */
615 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
618 * The callback should be declared as:
619 * int callback(void *context, void *data)
621 * The "context" is some user-defined context.
622 * The "data" is the pointer to the user data in the node,
623 * NOT the node itself.
625 * It should return 0 if all is OK, and !0 for any error.
626 * The walking will stop on any error.
628 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
631 * Find a matching data item in an rbtree and, if one is found,
632 * perform a callback on it.
634 * The callback is similar to rbtree_walk above, except that a
635 * positive return code from the callback will cause the found node
636 * to be deleted from the tree. If the tree was created with
637 * RBTREE_FLAG_LOCK, then the entire find/callback/delete/rebalance
638 * sequence happens while the lock is held.
640 * Note that the callback MUST NOT alter any of the data which
641 * is used as the rbtree key, nor attempt to alter the rest of
642 * the rbtree in any way.
644 * Returns a pointer to the user data in the found node, or NULL if the
645 * item was not found, or NULL if the item was deleted and the tree was
646 * created with a freeNode garbage collection routine.
648 void *rbtree_callbydata(rbtree_t *tree, void const *Data, int (*callback)(void *, void *), void *context);
653 typedef struct fr_fifo_t fr_fifo_t;
654 typedef void (*fr_fifo_free_t)(void *);
655 fr_fifo_t *fr_fifo_create(int max_entries, fr_fifo_free_t freeNode);
656 void fr_fifo_free(fr_fifo_t *fi);
657 int fr_fifo_push(fr_fifo_t *fi, void *data);
658 void *fr_fifo_pop(fr_fifo_t *fi);
659 void *fr_fifo_peek(fr_fifo_t *fi);
660 int fr_fifo_num_elements(fr_fifo_t *fi);
666 #include <freeradius-devel/packet.h>
669 #include <freeradius-devel/tcp.h>
672 #endif /*LIBRADIUS_H*/