5 * libradius.h Structures and prototypes
6 * for the radius library.
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * This library 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 GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; 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/threads.h>
41 #include <freeradius-devel/radius.h>
42 #include <freeradius-devel/token.h>
43 #include <freeradius-devel/hash.h>
45 #ifdef SIZEOF_UNSIGNED_INT
46 #if SIZEOF_UNSIGNED_INT != 4
47 #error FATAL: sizeof(unsigned int) != 4
56 * This definition of true as NOT false is definitive. :) Making
57 * it '1' can cause problems on stupid platforms. See articles
58 * on C portability for more information.
64 * Include for modules.
66 #include <freeradius-devel/sha1.h>
67 #include <freeradius-devel/md4.h>
75 #define AUTH_VECTOR_LEN 16
76 #define CHAP_VALUE_LENGTH 16
77 #define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
79 # define VENDOR(x) ((x >> 16) & 0xffff)
82 # define AUTH_HDR_LEN 20
83 # define VENDORPEC_USR 429
84 #define VENDORPEC_LUCENT 4846
85 #define VENDORPEC_STARENT 8164
86 # define DEBUG if (fr_debug_flag && fr_log_fp) fr_printf_log
87 # define debug_pair(vp) do { if (fr_debug_flag && fr_log_fp) { \
88 vp_print(fr_log_fp, vp); \
91 # define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
92 # define TAG_VALID_ZERO(x) ((x) < 0x20)
93 # define TAG_ANY -128 /* minimum signed char */
97 # define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
98 # define NEVER_RETURNS __attribute__ ((noreturn))
99 # define UNUSED __attribute__ ((unused))
100 # define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
102 # define PRINTF_LIKE(n) /* ignore */
103 # define NEVER_RETURNS /* ignore */
104 # define UNUSED /* ignore */
105 # define BLANK_FORMAT ""
108 typedef struct attr_flags {
109 unsigned int addport : 1; /* add NAS-Port to IP address */
110 unsigned int has_tag : 1; /* tagged attribute */
111 unsigned int do_xlat : 1; /* strvalue is dynamic */
112 unsigned int unknown_attr : 1; /* not in dictionary */
113 unsigned int array : 1; /* pack multiples into 1 attr */
114 unsigned int has_value : 1; /* has a value */
115 unsigned int has_value_alias : 1; /* has a value alias */
116 unsigned int has_tlv : 1; /* has sub attributes */
117 unsigned int is_tlv : 1; /* is a sub attribute */
118 unsigned int encoded : 1; /* has been put into packet */
120 int8_t tag; /* tag for tunneled attributes */
121 uint8_t encrypt; /* encryption method */
125 * Values of the encryption flags.
127 #define FLAG_ENCRYPT_NONE (0)
128 #define FLAG_ENCRYPT_USER_PASSWORD (1)
129 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
130 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
132 extern const FR_NAME_NUMBER dict_attr_types[];
134 typedef struct dict_attr {
142 typedef struct dict_value {
148 typedef struct dict_vendor {
150 int type; /* length of type data */
151 int length; /* length of length data */
156 typedef union value_pair_data {
157 char strvalue[MAX_STRING_LEN];
158 uint8_t octets[MAX_STRING_LEN];
159 struct in_addr ipaddr;
160 struct in6_addr ipv6addr;
165 uint8_t ifid[8]; /* struct? */
166 uint8_t ipv6prefix[18]; /* struct? */
171 typedef struct value_pair {
176 size_t length; /* of data */
179 * C++ hackery. The server and modules are all C, so
180 * the defs here don't affect them. But any C++ code
181 * gets excited over "operator", so we change the name.
188 struct value_pair *next;
190 VALUE_PAIR_DATA data;
192 #define vp_strvalue data.strvalue
193 #define vp_octets data.octets
194 #define vp_ipv6addr data.ipv6addr
195 #define vp_ifid data.ifid
196 #define vp_ipv6prefix data.ipv6prefix
197 #define vp_filter data.filter
198 #define vp_ether data.ether
199 #define vp_signed data.sinteger
200 #define vp_tlv data.tlv
203 #define vp_ipaddr data.ipaddr.s_addr
204 #define vp_date data.date
205 #define vp_integer data.integer
208 * These are left as lvalue until we audit the source for code
209 * that prints to vp_strvalue for integer/ipaddr/date types.
211 #define vp_ipaddr lvalue
212 #define vp_date lvalue
213 #define vp_integer lvalue
217 typedef struct fr_ipaddr_t {
218 int af; /* address family */
220 struct in_addr ip4addr;
221 struct in6_addr ip6addr; /* maybe defined in missing.h */
223 uint32_t scope; /* for IPv6 */
227 * vector: Request authenticator from access-request packet
228 * Put in there by rad_decode, and must be put in the
229 * response RADIUS_PACKET as well before calling rad_send
231 * verified: Filled in by rad_decode for accounting-request packets
233 * data,data_len: Used between rad_recv and rad_decode.
235 typedef struct radius_packet {
237 fr_ipaddr_t src_ipaddr;
238 fr_ipaddr_t dst_ipaddr;
244 uint8_t vector[AUTH_VECTOR_LEN];
253 * Printing functions.
255 int fr_utf8_char(const uint8_t *str);
256 size_t fr_print_string(const char *in, size_t inlen,
257 char *out, size_t outlen);
258 int vp_prints_value(char *out, size_t outlen,
259 VALUE_PAIR *vp, int delimitst);
260 const char *vp_print_name(char *buffer, size_t bufsize, int attr);
261 int vp_prints(char *out, size_t outlen, VALUE_PAIR *vp);
262 void vp_print(FILE *, VALUE_PAIR *);
263 void vp_printlist(FILE *, VALUE_PAIR *);
264 #define fprint_attr_val vp_print
267 * Dictionary functions.
269 int dict_addvendor(const char *name, int value);
270 int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
271 int dict_addvalue(const char *namestr, const char *attrstr, int value);
272 int dict_init(const char *dir, const char *fn);
273 void dict_free(void);
274 DICT_ATTR *dict_attrbyvalue(unsigned int attr);
275 DICT_ATTR *dict_attrbyname(const char *attr);
276 DICT_VALUE *dict_valbyattr(unsigned int attr, int val);
277 DICT_VALUE *dict_valbyname(unsigned int attr, const char *val);
278 const char *dict_valnamebyattr(unsigned int attr, int value);
279 int dict_vendorbyname(const char *name);
280 DICT_VENDOR *dict_vendorbyvalue(int vendor);
282 #if 1 /* FIXME: compat */
283 #define dict_attrget dict_attrbyvalue
284 #define dict_attrfind dict_attrbyname
285 #define dict_valfind dict_valbyname
286 /*#define dict_valget dict_valbyattr almost but not quite*/
289 /* get around diffrent ctime_r styles */
290 #if defined(CTIMERSTYLE) && ( CTIMERSTYLE == SOLARISSTYLE)
291 #define CTIME_R(a,b,c) ctime_r(a,b,c)
292 #define ASCTIME_R(a,b,c) asctime_r(a,b,c)
294 #define CTIME_R(a,b,c) ctime_r(a,b)
295 #define ASCTIME_R(a,b,c) asctime_r(a,b)
300 void fr_md5_calc(uint8_t *, const uint8_t *, unsigned int);
304 void fr_hmac_md5(const uint8_t *text, int text_len,
305 const uint8_t *key, int key_len,
306 unsigned char *digest);
310 void fr_hmac_sha1(const uint8_t *text, int text_len,
311 const uint8_t *key, int key_len,
315 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
316 int rad_packet_ok(RADIUS_PACKET *packet, int flags);
317 RADIUS_PACKET *rad_recv(int fd, int flags);
318 ssize_t rad_recv_header(int sockfd, fr_ipaddr_t *src_ipaddr, int *src_port,
320 void rad_recv_discard(int sockfd);
321 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
323 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
324 int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
326 int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
329 int rad_digest_cmp(const uint8_t *a, const uint8_t *b, size_t length);
330 RADIUS_PACKET *rad_alloc(int newvector);
331 RADIUS_PACKET *rad_alloc_reply(RADIUS_PACKET *);
332 void rad_free(RADIUS_PACKET **);
333 int rad_pwencode(char *encpw, size_t *len, const char *secret,
334 const uint8_t *vector);
335 int rad_pwdecode(char *encpw, size_t len, const char *secret,
336 const uint8_t *vector);
337 int rad_tunnel_pwencode(char *encpw, size_t *len, const char *secret,
338 const uint8_t *vector);
339 int rad_tunnel_pwdecode(uint8_t *encpw, size_t *len,
340 const char *secret, const uint8_t *vector);
341 int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
342 int id, VALUE_PAIR *password);
343 VALUE_PAIR *rad_attr2vp(const RADIUS_PACKET *packet, const RADIUS_PACKET *original,
344 const char *secret, int attribute, int length,
345 const uint8_t *data);
346 ssize_t rad_vp2data(const VALUE_PAIR *vp, uint8_t *out, size_t outlen);
347 int rad_vp2attr(const RADIUS_PACKET *packet,
348 const RADIUS_PACKET *original, const char *secret,
349 const VALUE_PAIR *vp, uint8_t *ptr);
352 VALUE_PAIR *pairalloc(DICT_ATTR *da);
353 VALUE_PAIR *paircreate_raw(int attr, int type, VALUE_PAIR *vp);
354 VALUE_PAIR *paircreate(int attr, int type);
355 void pairfree(VALUE_PAIR **);
356 void pairbasicfree(VALUE_PAIR *pair);
357 VALUE_PAIR *pairfind(VALUE_PAIR *, int);
358 void pairdelete(VALUE_PAIR **, int);
359 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
360 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
361 int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
362 VALUE_PAIR *paircopyvp(const VALUE_PAIR *vp);
363 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
364 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
365 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
366 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
367 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
368 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
369 VALUE_PAIR *pairread(const char **ptr, FR_TOKEN *eol);
370 FR_TOKEN userparse(const char *buffer, VALUE_PAIR **first_pair);
371 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
377 void fr_strerror_printf(const char *, ...)
379 __attribute__ ((format (printf, 1, 2)))
383 void fr_perror(const char *, ...)
385 __attribute__ ((format (printf, 1, 2)))
388 extern const char *fr_strerror(void);
389 extern int fr_dns_lookups; /* 0 = no dns lookups */
390 extern int fr_debug_flag; /* 0 = no debugging information */
391 extern int fr_max_attributes; /* per incoming packet */
392 #define FR_MAX_PACKET_CODE (52)
393 extern const char *fr_packet_codes[FR_MAX_PACKET_CODE];
394 extern FILE *fr_log_fp;
395 extern void rad_print_hex(RADIUS_PACKET *packet);
396 void fr_printf_log(const char *, ...)
398 __attribute__ ((format (printf, 1, 2)))
403 * Several handy miscellaneous functions.
405 const char * ip_ntoa(char *, uint32_t);
406 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
407 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
408 int rad_lockfd(int fd, int lock_len);
409 int rad_lockfd_nonblock(int fd, int lock_len);
410 int rad_unlockfd(int fd, int lock_len);
411 void fr_bin2hex(const uint8_t *bin, char *hex, size_t len);
412 size_t fr_hex2bin(const char *hex, uint8_t *bin, size_t len);
413 #ifndef HAVE_INET_PTON
414 int inet_pton(int af, const char *src, void *dst);
416 #ifndef HAVE_INET_NTOP
417 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
419 #ifndef HAVE_CLOSEFROM
420 int closefrom(int fd);
422 int fr_ipaddr_cmp(const fr_ipaddr_t *a, const fr_ipaddr_t *b);
424 int ip_hton(const char *src, int af, fr_ipaddr_t *dst);
425 const char *ip_ntoh(const fr_ipaddr_t *src, char *dst, size_t cnt);
426 int fr_ipaddr2sockaddr(const fr_ipaddr_t *ipaddr, int port,
427 struct sockaddr_storage *sa, socklen_t *salen);
428 int fr_sockaddr2ipaddr(const struct sockaddr_storage *sa, socklen_t salen,
429 fr_ipaddr_t *ipaddr, int * port);
434 int ascend_parse_filter(VALUE_PAIR *pair);
435 void print_abinary(const VALUE_PAIR *vp, char *buffer, size_t len, int delimitst);
436 #endif /*ASCEND_BINARY*/
438 /* random numbers in isaac.c */
439 /* context of random number generator */
440 typedef struct fr_randctx {
442 uint32_t randrsl[256];
443 uint32_t randmem[256];
449 void fr_isaac(fr_randctx *ctx);
450 void fr_randinit(fr_randctx *ctx, int flag);
451 uint32_t fr_rand(void); /* like rand(), but better. */
452 void fr_rand_seed(const void *, size_t ); /* seed the random pool */
455 /* crypt wrapper from crypt.c */
456 int fr_crypt_check(const char *key, const char *salt);
459 typedef struct rbtree_t rbtree_t;
460 typedef struct rbnode_t rbnode_t;
462 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
463 void (*freeNode)(void *),
465 void rbtree_free(rbtree_t *tree);
466 int rbtree_insert(rbtree_t *tree, void *Data);
467 rbnode_t *rbtree_insertnode(rbtree_t *tree, void *Data);
468 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
469 int rbtree_deletebydata(rbtree_t *tree, const void *data);
470 rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
471 void *rbtree_finddata(rbtree_t *tree, const void *Data);
472 int rbtree_num_elements(rbtree_t *tree);
473 void *rbtree_min(rbtree_t *tree);
474 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
476 /* callback order for walking */
477 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
480 * The callback should be declared as:
481 * int callback(void *context, void *data)
483 * The "context" is some user-defined context.
484 * The "data" is the pointer to the user data in the node,
485 * NOT the node itself.
487 * It should return 0 if all is OK, and !0 for any error.
488 * The walking will stop on any error.
490 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
495 typedef struct fr_fifo_t fr_fifo_t;
496 typedef void (*fr_fifo_free_t)(void *);
497 fr_fifo_t *fr_fifo_create(int max_entries, fr_fifo_free_t freeNode);
498 void fr_fifo_free(fr_fifo_t *fi);
499 int fr_fifo_push(fr_fifo_t *fi, void *data);
500 void *fr_fifo_pop(fr_fifo_t *fi);
501 void *fr_fifo_peek(fr_fifo_t *fi);
502 int fr_fifo_num_elements(fr_fifo_t *fi);
508 #include <freeradius-devel/packet.h>
510 #endif /*LIBRADIUS_H*/