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 #ifdef HAVE_SYS_TYPES_H
31 #include <sys/types.h>
38 #ifdef HAVE_INTTYPES_H
46 #ifdef HAVE_NETINET_IN_H
47 #include <netinet/in.h>
50 #ifdef HAVE_ARPA_INET_H
51 #include <arpa/inet.h>
54 #ifdef HAVE_SYS_SOCKET_H
55 #include <sys/socket.h>
62 * Check for inclusion of <time.h>, versus <sys/time.h>
63 * Taken verbatim from the autoconf manual.
65 #if TIME_WITH_SYS_TIME
66 # include <sys/time.h>
69 # ifdef HAVE_SYS_TIME_H
70 # include <sys/time.h>
76 #include <freeradius-devel/radius.h>
77 #include <freeradius-devel/token.h>
78 #include <freeradius-devel/hash.h>
80 #ifdef SIZEOF_UNSIGNED_INT
81 #if SIZEOF_UNSIGNED_INT != 4
82 #error FATAL: sizeof(unsigned int) != 4
87 * Include for modules.
89 #include <freeradius-devel/sha1.h>
90 #include <freeradius-devel/md4.h>
94 #define AUTH_VECTOR_LEN 16
95 #define CHAP_VALUE_LENGTH 16
96 #define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
98 # define VENDOR(x) ((x >> 16) & 0x7fff)
101 # define AUTH_HDR_LEN 20
102 # define VENDORPEC_USR 429
103 #define VENDORPEC_LUCENT 4846
104 #define VENDORPEC_STARENT 8164
105 # define DEBUG if (librad_debug) printf
106 # define debug_pair(vp) do { if (librad_debug) { \
108 vp_print(stdout, vp); \
112 # define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
113 # define TAG_VALID_ZERO(x) ((x) < 0x20)
114 # define TAG_ANY -128 /* minimum signed char */
117 #if defined(__GNUC__)
118 # define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
119 # define NEVER_RETURNS __attribute__ ((noreturn))
120 # define UNUSED __attribute__ ((unused))
121 # define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
123 # define PRINTF_LIKE(n) /* ignore */
124 # define NEVER_RETURNS /* ignore */
125 # define UNUSED /* ignore */
126 # define BLANK_FORMAT ""
129 typedef struct attr_flags {
130 unsigned int addport : 1; /* add NAS-Port to IP address */
131 unsigned int has_tag : 1; /* tagged attribute */
132 unsigned int do_xlat : 1; /* strvalue is dynamic */
133 unsigned int caseless : 1; /* case insensitive compares */
134 unsigned int array : 1; /* pack multiples into 1 attr */
135 unsigned int has_value : 1; /* has a value */
136 unsigned int has_value_alias : 1; /* has a value alias */
138 int8_t tag; /* tag for tunneled attributes */
139 uint8_t encrypt; /* encryption method */
143 * Values of the encryption flags.
145 #define FLAG_ENCRYPT_NONE (0)
146 #define FLAG_ENCRYPT_USER_PASSWORD (1)
147 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
148 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
150 typedef struct dict_attr {
158 typedef struct dict_value {
164 typedef struct dict_vendor {
166 int type; /* length of type data */
167 int length; /* length of length data */
171 typedef struct value_pair {
176 int length; /* of data */
178 uint32_t lvalue; /* DELETE ME ASAP */
180 struct value_pair *next;
182 char strvalue[MAX_STRING_LEN];
183 uint8_t octets[MAX_STRING_LEN];
184 struct in_addr ipaddr;
185 struct in6_addr ipv6addr;
189 uint8_t ifid[8]; /* struct? */
190 uint8_t ipv6prefix[18]; /* struct? */
193 #define vp_strvalue data.strvalue
194 #define vp_octets data.octets
195 #define vp_ipaddr lvalue
196 #define vp_ipv6addr data.ipv6addr
197 #define vp_date lvalue
198 #define vp_integer lvalue
199 #define vp_ifid data.ifid
200 #define vp_ipv6prefix data.ipv6prefix
201 #define vp_filter data.filter
204 typedef struct lrad_ipaddr_t {
205 int af; /* address family */
207 struct in_addr ip4addr;
208 struct in6_addr ip6addr; /* maybe defined in missing.h */
214 * vector: Request authenticator from access-request packet
215 * Put in there by rad_decode, and must be put in the
216 * response RADIUS_PACKET as well before calling rad_send
218 * verified: Filled in by rad_decode for accounting-request packets
220 * data,data_len: Used between rad_recv and rad_decode.
222 typedef struct radius_packet {
224 lrad_ipaddr_t src_ipaddr;
225 lrad_ipaddr_t dst_ipaddr;
230 uint8_t vector[AUTH_VECTOR_LEN];
240 * Printing functions.
242 void librad_safeprint(char *in, int inlen, char *out, int outlen);
243 int vp_prints_value(char *out, int outlen, VALUE_PAIR *vp,int delimitst);
244 int vp_prints(char *out, int outlen, VALUE_PAIR *vp);
245 void vp_print(FILE *, VALUE_PAIR *);
246 void vp_printlist(FILE *, VALUE_PAIR *);
247 #define fprint_attr_val vp_print
250 * Dictionary functions.
252 int dict_addvendor(const char *name, int value);
253 int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
254 int dict_addvalue(const char *namestr, const char *attrstr, int value);
255 int dict_init(const char *dir, const char *fn);
256 void dict_free(void);
257 DICT_ATTR *dict_attrbyvalue(int attr);
258 DICT_ATTR *dict_attrbyname(const char *attr);
259 DICT_VALUE *dict_valbyattr(int attr, int val);
260 DICT_VALUE *dict_valbyname(int attr, const char *val);
261 int dict_vendorbyname(const char *name);
262 DICT_VENDOR *dict_vendorbyvalue(int vendor);
264 #if 1 /* FIXME: compat */
265 #define dict_attrget dict_attrbyvalue
266 #define dict_attrfind dict_attrbyname
267 #define dict_valfind dict_valbyname
268 /*#define dict_valget dict_valbyattr almost but not quite*/
271 /* get around diffrent ctime_r styles */
273 #if CTIMERSTYLE == SOLARISSTYLE
274 #define CTIME_R(a,b,c) ctime_r(a,b,c)
276 #define CTIME_R(a,b,c) ctime_r(a,b)
279 #define CTIME_R(a,b,c) ctime_r(a,b)
284 void librad_md5_calc(uint8_t *, const uint8_t *, unsigned int);
288 void lrad_hmac_md5(const uint8_t *text, int text_len,
289 const uint8_t *key, int key_len,
290 unsigned char *digest);
294 void lrad_hmac_sha1(const uint8_t *text, int text_len,
295 const uint8_t *key, int key_len,
299 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
300 int rad_packet_ok(RADIUS_PACKET *packet);
301 RADIUS_PACKET *rad_recv(int fd);
302 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
304 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
305 int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
307 int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
310 RADIUS_PACKET *rad_alloc(int newvector);
311 void rad_free(RADIUS_PACKET **);
312 int rad_pwencode(char *encpw, int *len, const char *secret,
313 const uint8_t *vector);
314 int rad_pwdecode(char *encpw, int len, const char *secret,
315 const uint8_t *vector);
316 int rad_tunnel_pwencode(char *encpw, int *len, const char *secret,
317 const uint8_t *vector);
318 int rad_tunnel_pwdecode(uint8_t *encpw, int *len,
319 const char *secret, const uint8_t *vector);
320 int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
321 int id, VALUE_PAIR *password);
322 VALUE_PAIR *rad_attr2vp(const RADIUS_PACKET *packet, const RADIUS_PACKET *original,
323 const char *secret, int attribute, int length,
324 const uint8_t *data);
325 int rad_vp2attr(const RADIUS_PACKET *packet,
326 const RADIUS_PACKET *original, const char *secret,
327 const VALUE_PAIR *vp, uint8_t *ptr);
330 VALUE_PAIR *paircreate(int attr, int type);
331 void pairfree(VALUE_PAIR **);
332 void pairbasicfree(VALUE_PAIR *pair);
333 VALUE_PAIR *pairfind(VALUE_PAIR *, int);
334 void pairdelete(VALUE_PAIR **, int);
335 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
336 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
337 int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
338 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
339 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
340 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
341 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
342 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
343 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
344 VALUE_PAIR *pairread(char **ptr, LRAD_TOKEN *eol);
345 LRAD_TOKEN userparse(char *buffer, VALUE_PAIR **first_pair);
346 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
352 void librad_log(const char *, ...)
354 __attribute__ ((format (printf, 1, 2)))
358 void librad_perror(const char *, ...)
360 __attribute__ ((format (printf, 1, 2)))
363 extern char librad_errstr[];
364 extern int librad_dodns; /* 0 = no dns lookups */
365 extern int librad_debug; /* 0 = no debugging information */
366 extern int librad_max_attributes; /* per incoming packet */
369 * Several handy miscellaneous functions.
371 const char * ip_ntoa(char *, uint32_t);
372 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
373 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
374 int rad_lockfd(int fd, int lock_len);
375 int rad_lockfd_nonblock(int fd, int lock_len);
376 int rad_unlockfd(int fd, int lock_len);
377 void lrad_bin2hex(const uint8_t *bin, char *hex, int len);
378 int lrad_hex2bin(const char *hex, uint8_t *bin, int len);
379 #ifndef HAVE_INET_PTON
380 int inet_pton(int af, const char *src, void *dst);
382 #ifndef HAVE_INET_NTOP
383 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
385 #ifndef HAVE_CLOSEFROM
386 int closefrom(int fd);
389 int ip_hton(const char *src, int af, lrad_ipaddr_t *dst);
390 const char *ip_ntoh(const lrad_ipaddr_t *src, char *dst, size_t cnt);
395 int ascend_parse_filter(VALUE_PAIR *pair);
396 void print_abinary(VALUE_PAIR *vp, char *buffer, int len);
397 #endif /*ASCEND_BINARY*/
399 /* random numbers in isaac.c */
400 /* context of random number generator */
401 typedef struct lrad_randctx {
403 uint32_t randrsl[256];
404 uint32_t randmem[256];
410 void lrad_isaac(lrad_randctx *ctx);
411 void lrad_randinit(lrad_randctx *ctx, int flag);
412 uint32_t lrad_rand(void); /* like rand(), but better. */
413 void lrad_rand_seed(const void *, size_t ); /* seed the random pool */
416 /* crypt wrapper from crypt.c */
417 int lrad_crypt_check(const char *key, const char *salt);
420 typedef struct rbtree_t rbtree_t;
421 typedef struct rbnode_t rbnode_t;
423 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
424 void (*freeNode)(void *),
426 void rbtree_free(rbtree_t *tree);
427 int rbtree_insert(rbtree_t *tree, void *Data);
428 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
429 int rbtree_deletebydata(rbtree_t *tree, const void *data);
430 rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
431 void *rbtree_finddata(rbtree_t *tree, const void *Data);
432 int rbtree_num_elements(rbtree_t *tree);
433 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
435 /* callback order for walking */
436 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
439 * The callback should be declared as:
440 * int callback(void *context, void *data)
442 * The "context" is some user-defined context.
443 * The "data" is the pointer to the user data in the node,
444 * NOT the node itself.
446 * It should return 0 if all is OK, and !0 for any error.
447 * The walking will stop on any error.
449 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
454 typedef struct lrad_fifo_t lrad_fifo_t;
455 typedef void (*lrad_fifo_free_t)(void *);
456 lrad_fifo_t *lrad_fifo_create(int max_entries, lrad_fifo_free_t freeNode);
457 void lrad_fifo_free(lrad_fifo_t *fi);
458 int lrad_fifo_push(lrad_fifo_t *fi, void *data);
459 void *lrad_fifo_pop(lrad_fifo_t *fi);
461 #include <freeradius-devel/packet.h>
463 #endif /*LIBRADIUS_H*/