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>
58 #define AUTH_VECTOR_LEN 16
59 #define CHAP_VALUE_LENGTH 16
60 #define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
62 # define VENDOR(x) ((x >> 16) & 0x7fff)
65 # define AUTH_HDR_LEN 20
66 # define VENDORPEC_USR 429
67 #define VENDORPEC_LUCENT 4846
68 #define VENDORPEC_STARENT 8164
70 # define DEBUG fr_printf_log
73 * Rely on the compiler to optimize it out.
75 # define DEBUG if (0) fr_printf_log
77 # define debug_pair(vp) do { if (librad_debug && fr_log_fp) { \
78 fputc('\t', fr_log_fp); \
79 vp_print(fr_log_fp, vp); \
80 fputc('\n', fr_log_fp); \
83 # define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
84 # define TAG_VALID_ZERO(x) ((x) < 0x20)
85 # define TAG_ANY -128 /* minimum signed char */
89 # define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
90 # define NEVER_RETURNS __attribute__ ((noreturn))
91 # define UNUSED __attribute__ ((unused))
92 # define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
94 # define PRINTF_LIKE(n) /* ignore */
95 # define NEVER_RETURNS /* ignore */
96 # define UNUSED /* ignore */
97 # define BLANK_FORMAT ""
100 typedef struct attr_flags {
101 unsigned int addport : 1; /* add NAS-Port to IP address */
102 unsigned int has_tag : 1; /* tagged attribute */
103 unsigned int do_xlat : 1; /* strvalue is dynamic */
104 unsigned int unknown_attr : 1; /* not in dictionary */
105 unsigned int array : 1; /* pack multiples into 1 attr */
106 unsigned int has_value : 1; /* has a value */
107 unsigned int has_value_alias : 1; /* has a value alias */
109 int8_t tag; /* tag for tunneled attributes */
110 uint8_t encrypt; /* encryption method */
114 * Values of the encryption flags.
116 #define FLAG_ENCRYPT_NONE (0)
117 #define FLAG_ENCRYPT_USER_PASSWORD (1)
118 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
119 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
121 typedef struct dict_attr {
129 typedef struct dict_value {
135 typedef struct dict_vendor {
137 int type; /* length of type data */
138 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;
150 uint8_t ifid[8]; /* struct? */
151 uint8_t ipv6prefix[18]; /* struct? */
155 typedef struct value_pair {
160 size_t length; /* of data */
163 struct value_pair *next;
165 VALUE_PAIR_DATA data;
167 #define vp_strvalue data.strvalue
168 #define vp_octets data.octets
169 #define vp_ipv6addr data.ipv6addr
170 #define vp_ifid data.ifid
171 #define vp_ipv6prefix data.ipv6prefix
172 #define vp_filter data.filter
173 #define vp_ether data.ether
176 #define vp_ipaddr data.ipaddr.s_addr
177 #define vp_date data.date
178 #define vp_integer data.integer
181 * These are left as lvalue until we audit the source for code
182 * that prints to vp_strvalue for integer/ipaddr/date types.
184 #define vp_ipaddr lvalue
185 #define vp_date lvalue
186 #define vp_integer lvalue
190 typedef struct fr_ipaddr_t {
191 int af; /* address family */
193 struct in_addr ip4addr;
194 struct in6_addr ip6addr; /* maybe defined in missing.h */
199 * vector: Request authenticator from access-request packet
200 * Put in there by rad_decode, and must be put in the
201 * response RADIUS_PACKET as well before calling rad_send
203 * verified: Filled in by rad_decode for accounting-request packets
205 * data,data_len: Used between rad_recv and rad_decode.
207 typedef struct radius_packet {
209 fr_ipaddr_t src_ipaddr;
210 fr_ipaddr_t dst_ipaddr;
216 uint8_t vector[AUTH_VECTOR_LEN];
225 * Printing functions.
227 void librad_safeprint(char *in, size_t inlen,
228 char *out, size_t outlen);
229 int vp_prints_value(char *out, size_t outlen,
230 VALUE_PAIR *vp, int delimitst);
231 const char *vp_print_name(char *buffer, size_t bufsize, int attr);
232 int vp_prints(char *out, size_t outlen, VALUE_PAIR *vp);
233 void vp_print(FILE *, VALUE_PAIR *);
234 void vp_printlist(FILE *, VALUE_PAIR *);
235 #define fprint_attr_val vp_print
238 * Dictionary functions.
240 int dict_addvendor(const char *name, int value);
241 int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
242 int dict_addvalue(const char *namestr, const char *attrstr, int value);
243 int dict_init(const char *dir, const char *fn);
244 void dict_free(void);
245 DICT_ATTR *dict_attrbyvalue(int attr);
246 DICT_ATTR *dict_attrbyname(const char *attr);
247 DICT_VALUE *dict_valbyattr(int attr, int val);
248 DICT_VALUE *dict_valbyname(int attr, const char *val);
249 int dict_vendorbyname(const char *name);
250 DICT_VENDOR *dict_vendorbyvalue(int vendor);
252 #if 1 /* FIXME: compat */
253 #define dict_attrget dict_attrbyvalue
254 #define dict_attrfind dict_attrbyname
255 #define dict_valfind dict_valbyname
256 /*#define dict_valget dict_valbyattr almost but not quite*/
259 /* get around diffrent ctime_r styles */
261 #if CTIMERSTYLE == SOLARISSTYLE
262 #define CTIME_R(a,b,c) ctime_r(a,b,c)
264 #define CTIME_R(a,b,c) ctime_r(a,b)
267 #define CTIME_R(a,b,c) ctime_r(a,b)
272 void fr_md5_calc(uint8_t *, const uint8_t *, unsigned int);
276 void fr_hmac_md5(const uint8_t *text, int text_len,
277 const uint8_t *key, int key_len,
278 unsigned char *digest);
282 void fr_hmac_sha1(const uint8_t *text, int text_len,
283 const uint8_t *key, int key_len,
287 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
288 int rad_packet_ok(RADIUS_PACKET *packet, int flags);
289 RADIUS_PACKET *rad_recv(int fd, int flags);
290 ssize_t rad_recv_header(int sockfd, fr_ipaddr_t *src_ipaddr, int *src_port,
292 void rad_recv_discard(int sockfd);
293 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
295 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
296 int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
298 int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
301 RADIUS_PACKET *rad_alloc(int newvector);
302 void rad_free(RADIUS_PACKET **);
303 int rad_pwencode(char *encpw, size_t *len, const char *secret,
304 const uint8_t *vector);
305 int rad_pwdecode(char *encpw, size_t len, const char *secret,
306 const uint8_t *vector);
307 int rad_tunnel_pwencode(char *encpw, size_t *len, const char *secret,
308 const uint8_t *vector);
309 int rad_tunnel_pwdecode(uint8_t *encpw, size_t *len,
310 const char *secret, const uint8_t *vector);
311 int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
312 int id, VALUE_PAIR *password);
313 VALUE_PAIR *rad_attr2vp(const RADIUS_PACKET *packet, const RADIUS_PACKET *original,
314 const char *secret, int attribute, int length,
315 const uint8_t *data);
316 int rad_vp2attr(const RADIUS_PACKET *packet,
317 const RADIUS_PACKET *original, const char *secret,
318 const VALUE_PAIR *vp, uint8_t *ptr);
321 VALUE_PAIR *pairalloc(DICT_ATTR *da);
322 VALUE_PAIR *paircreate(int attr, int type);
323 void pairfree(VALUE_PAIR **);
324 void pairbasicfree(VALUE_PAIR *pair);
325 VALUE_PAIR *pairfind(VALUE_PAIR *, int);
326 void pairdelete(VALUE_PAIR **, int);
327 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
328 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
329 int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
330 VALUE_PAIR *paircopyvp(const VALUE_PAIR *vp);
331 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
332 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
333 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
334 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
335 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
336 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
337 VALUE_PAIR *pairread(const char **ptr, FR_TOKEN *eol);
338 FR_TOKEN userparse(const char *buffer, VALUE_PAIR **first_pair);
339 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
345 void librad_log(const char *, ...)
347 __attribute__ ((format (printf, 1, 2)))
351 void librad_perror(const char *, ...)
353 __attribute__ ((format (printf, 1, 2)))
356 extern char librad_errstr[];
357 extern int librad_dodns; /* 0 = no dns lookups */
358 extern int librad_debug; /* 0 = no debugging information */
359 extern int librad_max_attributes; /* per incoming packet */
360 extern FILE *fr_log_fp;
361 void fr_printf_log(const char *, ...)
363 __attribute__ ((format (printf, 1, 2)))
368 * Several handy miscellaneous functions.
370 const char * ip_ntoa(char *, uint32_t);
371 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
372 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
373 int rad_lockfd(int fd, int lock_len);
374 int rad_lockfd_nonblock(int fd, int lock_len);
375 int rad_unlockfd(int fd, int lock_len);
376 void fr_bin2hex(const uint8_t *bin, char *hex, size_t len);
377 size_t fr_hex2bin(const char *hex, uint8_t *bin, size_t len);
378 #ifndef HAVE_INET_PTON
379 int inet_pton(int af, const char *src, void *dst);
381 #ifndef HAVE_INET_NTOP
382 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
384 #ifndef HAVE_CLOSEFROM
385 int closefrom(int fd);
387 int fr_ipaddr_cmp(const fr_ipaddr_t *a, const fr_ipaddr_t *b);
389 int ip_hton(const char *src, int af, fr_ipaddr_t *dst);
390 const char *ip_ntoh(const fr_ipaddr_t *src, char *dst, size_t cnt);
396 int ascend_parse_filter(VALUE_PAIR *pair);
397 void print_abinary(VALUE_PAIR *vp, char *buffer, size_t len);
398 #endif /*ASCEND_BINARY*/
400 /* random numbers in isaac.c */
401 /* context of random number generator */
402 typedef struct fr_randctx {
404 uint32_t randrsl[256];
405 uint32_t randmem[256];
411 void fr_isaac(fr_randctx *ctx);
412 void fr_randinit(fr_randctx *ctx, int flag);
413 uint32_t fr_rand(void); /* like rand(), but better. */
414 void fr_rand_seed(const void *, size_t ); /* seed the random pool */
417 /* crypt wrapper from crypt.c */
418 int fr_crypt_check(const char *key, const char *salt);
421 typedef struct rbtree_t rbtree_t;
422 typedef struct rbnode_t rbnode_t;
424 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
425 void (*freeNode)(void *),
427 void rbtree_free(rbtree_t *tree);
428 int rbtree_insert(rbtree_t *tree, void *Data);
429 rbnode_t *rbtree_insertnode(rbtree_t *tree, void *Data);
430 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
431 int rbtree_deletebydata(rbtree_t *tree, const void *data);
432 rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
433 void *rbtree_finddata(rbtree_t *tree, const void *Data);
434 int rbtree_num_elements(rbtree_t *tree);
435 void *rbtree_min(rbtree_t *tree);
436 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
438 /* callback order for walking */
439 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
442 * The callback should be declared as:
443 * int callback(void *context, void *data)
445 * The "context" is some user-defined context.
446 * The "data" is the pointer to the user data in the node,
447 * NOT the node itself.
449 * It should return 0 if all is OK, and !0 for any error.
450 * The walking will stop on any error.
452 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
457 typedef struct fr_fifo_t fr_fifo_t;
458 typedef void (*fr_fifo_free_t)(void *);
459 fr_fifo_t *fr_fifo_create(int max_entries, fr_fifo_free_t freeNode);
460 void fr_fifo_free(fr_fifo_t *fi);
461 int fr_fifo_push(fr_fifo_t *fi, void *data);
462 void *fr_fifo_pop(fr_fifo_t *fi);
463 void *fr_fifo_peek(fr_fifo_t *fi);
464 int fr_fifo_num_elements(fr_fifo_t *fi);
466 #include <freeradius-devel/packet.h>
468 #endif /*LIBRADIUS_H*/