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 2001,2002,2003,2004,2005,2006 The FreeRADIUS server project
27 #include <freeradius-devel/ident.h>
28 RCSIDH(libradius_h, "$Id$")
30 #include <freeradius-devel/missing.h>
40 * Check for inclusion of <time.h>, versus <sys/time.h>
41 * Taken verbatim from the autoconf manual.
43 #if TIME_WITH_SYS_TIME
44 # include <sys/time.h>
47 # ifdef HAVE_SYS_TIME_H
48 # include <sys/time.h>
54 #include <freeradius-devel/radius.h>
55 #include <freeradius-devel/token.h>
56 #include <freeradius-devel/hash.h>
58 #ifdef SIZEOF_UNSIGNED_INT
59 #if SIZEOF_UNSIGNED_INT != 4
60 #error FATAL: sizeof(unsigned int) != 4
65 * Include for modules.
67 #include <freeradius-devel/sha1.h>
68 #include <freeradius-devel/md4.h>
72 #define AUTH_VECTOR_LEN 16
73 #define CHAP_VALUE_LENGTH 16
74 #define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
76 # define VENDOR(x) ((x >> 16) & 0x7fff)
79 # define AUTH_HDR_LEN 20
80 # define VENDORPEC_USR 429
81 #define VENDORPEC_LUCENT 4846
82 #define VENDORPEC_STARENT 8164
83 # define DEBUG if (librad_debug) printf
84 # define debug_pair(vp) do { if (librad_debug) { \
86 vp_print(stdout, vp); \
90 # define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
91 # define TAG_VALID_ZERO(x) ((x) < 0x20)
92 # define TAG_ANY -128 /* minimum signed char */
96 # define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
97 # define NEVER_RETURNS __attribute__ ((noreturn))
98 # define UNUSED __attribute__ ((unused))
99 # define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
101 # define PRINTF_LIKE(n) /* ignore */
102 # define NEVER_RETURNS /* ignore */
103 # define UNUSED /* ignore */
104 # define BLANK_FORMAT ""
107 typedef struct attr_flags {
108 unsigned int addport : 1; /* add NAS-Port to IP address */
109 unsigned int has_tag : 1; /* tagged attribute */
110 unsigned int do_xlat : 1; /* strvalue is dynamic */
111 unsigned int caseless : 1; /* case insensitive compares */
112 unsigned int array : 1; /* pack multiples into 1 attr */
113 unsigned int has_value : 1; /* has a value */
114 unsigned int has_value_alias : 1; /* has a value alias */
116 int8_t tag; /* tag for tunneled attributes */
117 uint8_t encrypt; /* encryption method */
121 * Values of the encryption flags.
123 #define FLAG_ENCRYPT_NONE (0)
124 #define FLAG_ENCRYPT_USER_PASSWORD (1)
125 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
126 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
128 typedef struct dict_attr {
136 typedef struct dict_value {
142 typedef struct dict_vendor {
144 int type; /* length of type data */
145 int length; /* length of length data */
149 typedef struct value_pair {
154 int length; /* of data */
156 uint32_t lvalue; /* DELETE ME ASAP */
158 struct value_pair *next;
160 char strvalue[MAX_STRING_LEN];
161 uint8_t octets[MAX_STRING_LEN];
162 struct in_addr ipaddr;
163 struct in6_addr ipv6addr;
167 uint8_t ifid[8]; /* struct? */
168 uint8_t ipv6prefix[18]; /* struct? */
171 #define vp_strvalue data.strvalue
172 #define vp_octets data.octets
173 #define vp_ipaddr lvalue
174 #define vp_ipv6addr data.ipv6addr
175 #define vp_date lvalue
176 #define vp_integer lvalue
177 #define vp_ifid data.ifid
178 #define vp_ipv6prefix data.ipv6prefix
179 #define vp_filter data.filter
182 typedef struct lrad_ipaddr_t {
183 int af; /* address family */
185 struct in_addr ip4addr;
186 struct in6_addr ip6addr; /* maybe defined in missing.h */
192 * vector: Request authenticator from access-request packet
193 * Put in there by rad_decode, and must be put in the
194 * response RADIUS_PACKET as well before calling rad_send
196 * verified: Filled in by rad_decode for accounting-request packets
198 * data,data_len: Used between rad_recv and rad_decode.
200 typedef struct radius_packet {
202 lrad_ipaddr_t src_ipaddr;
203 lrad_ipaddr_t dst_ipaddr;
208 uint8_t vector[AUTH_VECTOR_LEN];
218 * Printing functions.
220 void librad_safeprint(char *in, int inlen, char *out, int outlen);
221 int vp_prints_value(char *out, int outlen, VALUE_PAIR *vp,int delimitst);
222 int vp_prints(char *out, int outlen, VALUE_PAIR *vp);
223 void vp_print(FILE *, VALUE_PAIR *);
224 void vp_printlist(FILE *, VALUE_PAIR *);
225 #define fprint_attr_val vp_print
228 * Dictionary functions.
230 int dict_addvendor(const char *name, int value);
231 int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
232 int dict_addvalue(const char *namestr, const char *attrstr, int value);
233 int dict_init(const char *dir, const char *fn);
234 void dict_free(void);
235 DICT_ATTR *dict_attrbyvalue(int attr);
236 DICT_ATTR *dict_attrbyname(const char *attr);
237 DICT_VALUE *dict_valbyattr(int attr, int val);
238 DICT_VALUE *dict_valbyname(int attr, const char *val);
239 int dict_vendorbyname(const char *name);
240 DICT_VENDOR *dict_vendorbyvalue(int vendor);
242 #if 1 /* FIXME: compat */
243 #define dict_attrget dict_attrbyvalue
244 #define dict_attrfind dict_attrbyname
245 #define dict_valfind dict_valbyname
246 /*#define dict_valget dict_valbyattr almost but not quite*/
249 /* get around diffrent ctime_r styles */
251 #if CTIMERSTYLE == SOLARISSTYLE
252 #define CTIME_R(a,b,c) ctime_r(a,b,c)
254 #define CTIME_R(a,b,c) ctime_r(a,b)
257 #define CTIME_R(a,b,c) ctime_r(a,b)
262 void librad_md5_calc(uint8_t *, const uint8_t *, unsigned int);
266 void lrad_hmac_md5(const uint8_t *text, int text_len,
267 const uint8_t *key, int key_len,
268 unsigned char *digest);
272 void lrad_hmac_sha1(const uint8_t *text, int text_len,
273 const uint8_t *key, int key_len,
277 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
278 int rad_packet_ok(RADIUS_PACKET *packet);
279 RADIUS_PACKET *rad_recv(int fd);
280 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
282 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
283 int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
285 int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
288 RADIUS_PACKET *rad_alloc(int newvector);
289 void rad_free(RADIUS_PACKET **);
290 int rad_pwencode(char *encpw, int *len, const char *secret,
291 const uint8_t *vector);
292 int rad_pwdecode(char *encpw, int len, const char *secret,
293 const uint8_t *vector);
294 int rad_tunnel_pwencode(char *encpw, int *len, const char *secret,
295 const uint8_t *vector);
296 int rad_tunnel_pwdecode(uint8_t *encpw, int *len,
297 const char *secret, const uint8_t *vector);
298 int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
299 int id, VALUE_PAIR *password);
300 VALUE_PAIR *rad_attr2vp(const RADIUS_PACKET *packet, const RADIUS_PACKET *original,
301 const char *secret, int attribute, int length,
302 const uint8_t *data);
303 int rad_vp2attr(const RADIUS_PACKET *packet,
304 const RADIUS_PACKET *original, const char *secret,
305 const VALUE_PAIR *vp, uint8_t *ptr);
308 VALUE_PAIR *paircreate(int attr, int type);
309 void pairfree(VALUE_PAIR **);
310 void pairbasicfree(VALUE_PAIR *pair);
311 VALUE_PAIR *pairfind(VALUE_PAIR *, int);
312 void pairdelete(VALUE_PAIR **, int);
313 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
314 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
315 int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
316 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
317 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
318 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
319 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
320 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
321 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
322 VALUE_PAIR *pairread(char **ptr, LRAD_TOKEN *eol);
323 LRAD_TOKEN userparse(char *buffer, VALUE_PAIR **first_pair);
324 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
330 void librad_log(const char *, ...)
332 __attribute__ ((format (printf, 1, 2)))
336 void librad_perror(const char *, ...)
338 __attribute__ ((format (printf, 1, 2)))
341 extern char librad_errstr[];
342 extern int librad_dodns; /* 0 = no dns lookups */
343 extern int librad_debug; /* 0 = no debugging information */
344 extern int librad_max_attributes; /* per incoming packet */
347 * Several handy miscellaneous functions.
349 const char * ip_ntoa(char *, uint32_t);
350 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
351 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
352 int rad_lockfd(int fd, int lock_len);
353 int rad_lockfd_nonblock(int fd, int lock_len);
354 int rad_unlockfd(int fd, int lock_len);
355 void lrad_bin2hex(const uint8_t *bin, char *hex, int len);
356 int lrad_hex2bin(const char *hex, uint8_t *bin, int len);
357 #ifndef HAVE_INET_PTON
358 int inet_pton(int af, const char *src, void *dst);
360 #ifndef HAVE_INET_NTOP
361 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
363 #ifndef HAVE_CLOSEFROM
364 int closefrom(int fd);
367 int ip_hton(const char *src, int af, lrad_ipaddr_t *dst);
368 const char *ip_ntoh(const lrad_ipaddr_t *src, char *dst, size_t cnt);
373 int ascend_parse_filter(VALUE_PAIR *pair);
374 void print_abinary(VALUE_PAIR *vp, char *buffer, int len);
375 #endif /*ASCEND_BINARY*/
377 /* random numbers in isaac.c */
378 /* context of random number generator */
379 typedef struct lrad_randctx {
381 uint32_t randrsl[256];
382 uint32_t randmem[256];
388 void lrad_isaac(lrad_randctx *ctx);
389 void lrad_randinit(lrad_randctx *ctx, int flag);
390 uint32_t lrad_rand(void); /* like rand(), but better. */
391 void lrad_rand_seed(const void *, size_t ); /* seed the random pool */
394 /* crypt wrapper from crypt.c */
395 int lrad_crypt_check(const char *key, const char *salt);
398 typedef struct rbtree_t rbtree_t;
399 typedef struct rbnode_t rbnode_t;
401 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
402 void (*freeNode)(void *),
404 void rbtree_free(rbtree_t *tree);
405 int rbtree_insert(rbtree_t *tree, void *Data);
406 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
407 int rbtree_deletebydata(rbtree_t *tree, const void *data);
408 rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
409 void *rbtree_finddata(rbtree_t *tree, const void *Data);
410 int rbtree_num_elements(rbtree_t *tree);
411 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
413 /* callback order for walking */
414 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
417 * The callback should be declared as:
418 * int callback(void *context, void *data)
420 * The "context" is some user-defined context.
421 * The "data" is the pointer to the user data in the node,
422 * NOT the node itself.
424 * It should return 0 if all is OK, and !0 for any error.
425 * The walking will stop on any error.
427 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
432 typedef struct lrad_fifo_t lrad_fifo_t;
433 typedef void (*lrad_fifo_free_t)(void *);
434 lrad_fifo_t *lrad_fifo_create(int max_entries, lrad_fifo_free_t freeNode);
435 void lrad_fifo_free(lrad_fifo_t *fi);
436 int lrad_fifo_push(lrad_fifo_t *fi, void *data);
437 void *lrad_fifo_pop(lrad_fifo_t *fi);
439 #include <freeradius-devel/packet.h>
441 #endif /*LIBRADIUS_H*/