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 #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
69 # define DEBUG if (librad_debug) printf
70 # define debug_pair(vp) do { if (librad_debug) { \
72 vp_print(stdout, vp); \
76 # define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
77 # define TAG_VALID_ZERO(x) ((x) < 0x20)
78 # define TAG_ANY -128 /* minimum signed char */
82 # define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
83 # define NEVER_RETURNS __attribute__ ((noreturn))
84 # define UNUSED __attribute__ ((unused))
85 # define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
87 # define PRINTF_LIKE(n) /* ignore */
88 # define NEVER_RETURNS /* ignore */
89 # define UNUSED /* ignore */
90 # define BLANK_FORMAT ""
93 typedef struct attr_flags {
94 unsigned int addport : 1; /* add NAS-Port to IP address */
95 unsigned int has_tag : 1; /* tagged attribute */
96 unsigned int do_xlat : 1; /* strvalue is dynamic */
97 unsigned int caseless : 1; /* case insensitive compares */
98 unsigned int array : 1; /* pack multiples into 1 attr */
99 unsigned int has_value : 1; /* has a value */
100 unsigned int has_value_alias : 1; /* has a value alias */
102 int8_t tag; /* tag for tunneled attributes */
103 uint8_t encrypt; /* encryption method */
107 * Values of the encryption flags.
109 #define FLAG_ENCRYPT_NONE (0)
110 #define FLAG_ENCRYPT_USER_PASSWORD (1)
111 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
112 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
114 typedef struct dict_attr {
122 typedef struct dict_value {
128 typedef struct dict_vendor {
130 int type; /* length of type data */
131 int length; /* length of length data */
135 typedef union value_pair_data {
136 char strvalue[MAX_STRING_LEN];
137 uint8_t octets[MAX_STRING_LEN];
138 struct in_addr ipaddr;
139 struct in6_addr ipv6addr;
143 uint8_t ifid[8]; /* struct? */
144 uint8_t ipv6prefix[18]; /* struct? */
147 typedef struct value_pair {
152 int length; /* of data */
154 uint32_t lvalue; /* DELETE ME ASAP */
156 struct value_pair *next;
157 VALUE_PAIR_DATA data;
159 #define vp_strvalue data.strvalue
160 #define vp_octets data.octets
161 #define vp_ipaddr lvalue
162 #define vp_ipv6addr data.ipv6addr
163 #define vp_date lvalue
164 #define vp_integer lvalue
165 #define vp_ifid data.ifid
166 #define vp_ipv6prefix data.ipv6prefix
167 #define vp_filter data.filter
170 typedef struct lrad_ipaddr_t {
171 int af; /* address family */
173 struct in_addr ip4addr;
174 struct in6_addr ip6addr; /* maybe defined in missing.h */
180 * vector: Request authenticator from access-request packet
181 * Put in there by rad_decode, and must be put in the
182 * response RADIUS_PACKET as well before calling rad_send
184 * verified: Filled in by rad_decode for accounting-request packets
186 * data,data_len: Used between rad_recv and rad_decode.
188 typedef struct radius_packet {
190 lrad_ipaddr_t src_ipaddr;
191 lrad_ipaddr_t dst_ipaddr;
196 uint8_t vector[AUTH_VECTOR_LEN];
206 * Printing functions.
208 void librad_safeprint(char *in, int inlen, char *out, int outlen);
209 int vp_prints_value(char *out, int outlen, VALUE_PAIR *vp,int delimitst);
210 int vp_prints(char *out, int outlen, VALUE_PAIR *vp);
211 void vp_print(FILE *, VALUE_PAIR *);
212 void vp_printlist(FILE *, VALUE_PAIR *);
213 #define fprint_attr_val vp_print
216 * Dictionary functions.
218 int dict_addvendor(const char *name, int value);
219 int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
220 int dict_addvalue(const char *namestr, const char *attrstr, int value);
221 int dict_init(const char *dir, const char *fn);
222 void dict_free(void);
223 DICT_ATTR *dict_attrbyvalue(int attr);
224 DICT_ATTR *dict_attrbyname(const char *attr);
225 DICT_VALUE *dict_valbyattr(int attr, int val);
226 DICT_VALUE *dict_valbyname(int attr, const char *val);
227 int dict_vendorbyname(const char *name);
228 DICT_VENDOR *dict_vendorbyvalue(int vendor);
230 #if 1 /* FIXME: compat */
231 #define dict_attrget dict_attrbyvalue
232 #define dict_attrfind dict_attrbyname
233 #define dict_valfind dict_valbyname
234 /*#define dict_valget dict_valbyattr almost but not quite*/
237 /* get around diffrent ctime_r styles */
239 #if CTIMERSTYLE == SOLARISSTYLE
240 #define CTIME_R(a,b,c) ctime_r(a,b,c)
242 #define CTIME_R(a,b,c) ctime_r(a,b)
245 #define CTIME_R(a,b,c) ctime_r(a,b)
250 void librad_md5_calc(uint8_t *, const uint8_t *, unsigned int);
254 void lrad_hmac_md5(const uint8_t *text, int text_len,
255 const uint8_t *key, int key_len,
256 unsigned char *digest);
260 void lrad_hmac_sha1(const uint8_t *text, int text_len,
261 const uint8_t *key, int key_len,
265 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
266 int rad_packet_ok(RADIUS_PACKET *packet);
267 RADIUS_PACKET *rad_recv(int fd);
268 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
270 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
271 int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
273 int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
276 RADIUS_PACKET *rad_alloc(int newvector);
277 void rad_free(RADIUS_PACKET **);
278 int rad_pwencode(char *encpw, int *len, const char *secret,
279 const uint8_t *vector);
280 int rad_pwdecode(char *encpw, int len, const char *secret,
281 const uint8_t *vector);
282 int rad_tunnel_pwencode(char *encpw, int *len, const char *secret,
283 const uint8_t *vector);
284 int rad_tunnel_pwdecode(uint8_t *encpw, int *len,
285 const char *secret, const uint8_t *vector);
286 int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
287 int id, VALUE_PAIR *password);
288 VALUE_PAIR *rad_attr2vp(const RADIUS_PACKET *packet, const RADIUS_PACKET *original,
289 const char *secret, int attribute, int length,
290 const uint8_t *data);
291 int rad_vp2attr(const RADIUS_PACKET *packet,
292 const RADIUS_PACKET *original, const char *secret,
293 const VALUE_PAIR *vp, uint8_t *ptr);
296 VALUE_PAIR *paircreate(int attr, int type);
297 void pairfree(VALUE_PAIR **);
298 void pairbasicfree(VALUE_PAIR *pair);
299 VALUE_PAIR *pairfind(VALUE_PAIR *, int);
300 void pairdelete(VALUE_PAIR **, int);
301 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
302 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
303 int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
304 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
305 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
306 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
307 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
308 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
309 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
310 VALUE_PAIR *pairread(char **ptr, LRAD_TOKEN *eol);
311 LRAD_TOKEN userparse(char *buffer, VALUE_PAIR **first_pair);
312 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
318 void librad_log(const char *, ...)
320 __attribute__ ((format (printf, 1, 2)))
324 void librad_perror(const char *, ...)
326 __attribute__ ((format (printf, 1, 2)))
329 extern char librad_errstr[];
330 extern int librad_dodns; /* 0 = no dns lookups */
331 extern int librad_debug; /* 0 = no debugging information */
332 extern int librad_max_attributes; /* per incoming packet */
335 * Several handy miscellaneous functions.
337 const char * ip_ntoa(char *, uint32_t);
338 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
339 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
340 int rad_lockfd(int fd, int lock_len);
341 int rad_lockfd_nonblock(int fd, int lock_len);
342 int rad_unlockfd(int fd, int lock_len);
343 void lrad_bin2hex(const uint8_t *bin, char *hex, int len);
344 int lrad_hex2bin(const char *hex, uint8_t *bin, int len);
345 #ifndef HAVE_INET_PTON
346 int inet_pton(int af, const char *src, void *dst);
348 #ifndef HAVE_INET_NTOP
349 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
351 #ifndef HAVE_CLOSEFROM
352 int closefrom(int fd);
354 int lrad_ipaddr_cmp(const lrad_ipaddr_t *a, const lrad_ipaddr_t *b);
356 int ip_hton(const char *src, int af, lrad_ipaddr_t *dst);
357 const char *ip_ntoh(const lrad_ipaddr_t *src, char *dst, size_t cnt);
363 int ascend_parse_filter(VALUE_PAIR *pair);
364 void print_abinary(VALUE_PAIR *vp, char *buffer, int len);
365 #endif /*ASCEND_BINARY*/
367 /* random numbers in isaac.c */
368 /* context of random number generator */
369 typedef struct lrad_randctx {
371 uint32_t randrsl[256];
372 uint32_t randmem[256];
378 void lrad_isaac(lrad_randctx *ctx);
379 void lrad_randinit(lrad_randctx *ctx, int flag);
380 uint32_t lrad_rand(void); /* like rand(), but better. */
381 void lrad_rand_seed(const void *, size_t ); /* seed the random pool */
384 /* crypt wrapper from crypt.c */
385 int lrad_crypt_check(const char *key, const char *salt);
388 typedef struct rbtree_t rbtree_t;
389 typedef struct rbnode_t rbnode_t;
391 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
392 void (*freeNode)(void *),
394 void rbtree_free(rbtree_t *tree);
395 int rbtree_insert(rbtree_t *tree, void *Data);
396 rbnode_t *rbtree_insertnode(rbtree_t *tree, void *Data);
397 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
398 int rbtree_deletebydata(rbtree_t *tree, const void *data);
399 rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
400 void *rbtree_finddata(rbtree_t *tree, const void *Data);
401 int rbtree_num_elements(rbtree_t *tree);
402 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
404 /* callback order for walking */
405 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
408 * The callback should be declared as:
409 * int callback(void *context, void *data)
411 * The "context" is some user-defined context.
412 * The "data" is the pointer to the user data in the node,
413 * NOT the node itself.
415 * It should return 0 if all is OK, and !0 for any error.
416 * The walking will stop on any error.
418 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
423 typedef struct lrad_fifo_t lrad_fifo_t;
424 typedef void (*lrad_fifo_free_t)(void *);
425 lrad_fifo_t *lrad_fifo_create(int max_entries, lrad_fifo_free_t freeNode);
426 void lrad_fifo_free(lrad_fifo_t *fi);
427 int lrad_fifo_push(lrad_fifo_t *fi, void *data);
428 void *lrad_fifo_pop(lrad_fifo_t *fi);
430 #include <freeradius-devel/packet.h>
432 #endif /*LIBRADIUS_H*/