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 diameter : 1; /* VP is a in diameter format */
135 unsigned int array : 1; /* pack multiples into 1 attr */
136 unsigned int has_value : 1; /* has a value */
137 unsigned int has_value_alias : 1; /* has a value alias */
139 int8_t tag; /* tag for tunneled attributes */
140 uint8_t encrypt; /* encryption method */
144 * Values of the encryption flags.
146 #define FLAG_ENCRYPT_NONE (0)
147 #define FLAG_ENCRYPT_USER_PASSWORD (1)
148 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
149 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
151 typedef struct dict_attr {
159 typedef struct dict_value {
165 typedef struct dict_vendor {
167 int type; /* length of type data */
168 int length; /* length of length data */
172 typedef struct value_pair {
177 int length; /* of data */
179 uint32_t lvalue; /* DELETE ME ASAP */
181 struct value_pair *next;
183 char strvalue[MAX_STRING_LEN];
184 uint8_t octets[MAX_STRING_LEN];
185 struct in_addr ipaddr;
186 struct in6_addr ipv6addr;
190 uint8_t ifid[8]; /* struct? */
191 uint8_t ipv6prefix[18]; /* struct? */
194 #define vp_strvalue data.strvalue
195 #define vp_octets data.octets
196 #define vp_ipaddr lvalue
197 #define vp_ipv6addr data.ipv6addr
198 #define vp_data lvalue
199 #define vp_integer lvalue
200 #define vp_ifid data.ifid
201 #define vp_ipv6prefix data.ipv6prefix
202 #define vp_filter data.filter
205 typedef struct lrad_ipaddr_t {
206 int af; /* address family */
208 struct in_addr ip4addr;
209 struct in6_addr ip6addr; /* maybe defined in missing.h */
215 * vector: Request authenticator from access-request packet
216 * Put in there by rad_decode, and must be put in the
217 * response RADIUS_PACKET as well before calling rad_send
219 * verified: Filled in by rad_decode for accounting-request packets
221 * data,data_len: Used between rad_recv and rad_decode.
223 typedef struct radius_packet {
225 lrad_ipaddr_t src_ipaddr;
226 lrad_ipaddr_t dst_ipaddr;
231 uint8_t vector[AUTH_VECTOR_LEN];
241 * Printing functions.
243 void librad_safeprint(char *in, int inlen, char *out, int outlen);
244 int vp_prints_value(char *out, int outlen, VALUE_PAIR *vp,int delimitst);
245 int vp_prints(char *out, int outlen, VALUE_PAIR *vp);
246 void vp_print(FILE *, VALUE_PAIR *);
247 void vp_printlist(FILE *, VALUE_PAIR *);
248 #define fprint_attr_val vp_print
251 * Dictionary functions.
253 int dict_addvendor(const char *name, int value);
254 int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
255 int dict_addvalue(const char *namestr, const char *attrstr, int value);
256 int dict_init(const char *dir, const char *fn);
257 void dict_free(void);
258 DICT_ATTR *dict_attrbyvalue(int attr);
259 DICT_ATTR *dict_attrbyname(const char *attr);
260 DICT_VALUE *dict_valbyattr(int attr, int val);
261 DICT_VALUE *dict_valbyname(int attr, const char *val);
262 int dict_vendorbyname(const char *name);
263 DICT_VENDOR *dict_vendorbyvalue(int vendor);
265 #if 1 /* FIXME: compat */
266 #define dict_attrget dict_attrbyvalue
267 #define dict_attrfind dict_attrbyname
268 #define dict_valfind dict_valbyname
269 /*#define dict_valget dict_valbyattr almost but not quite*/
272 /* get around diffrent ctime_r styles */
274 #if CTIMERSTYLE == SOLARISSTYLE
275 #define CTIME_R(a,b,c) ctime_r(a,b,c)
277 #define CTIME_R(a,b,c) ctime_r(a,b)
280 #define CTIME_R(a,b,c) ctime_r(a,b)
285 void librad_md5_calc(uint8_t *, const uint8_t *, unsigned int);
289 void lrad_hmac_md5(const uint8_t *text, int text_len,
290 const uint8_t *key, int key_len,
291 unsigned char *digest);
295 void lrad_hmac_sha1(const uint8_t *text, int text_len,
296 const uint8_t *key, int key_len,
300 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
301 int rad_packet_ok(RADIUS_PACKET *packet);
302 RADIUS_PACKET *rad_recv(int fd);
303 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
305 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
306 int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
308 int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
311 RADIUS_PACKET *rad_alloc(int newvector);
312 void rad_free(RADIUS_PACKET **);
313 int rad_pwencode(char *encpw, int *len, const char *secret,
314 const uint8_t *vector);
315 int rad_pwdecode(char *encpw, int len, const char *secret,
316 const uint8_t *vector);
317 int rad_tunnel_pwencode(char *encpw, int *len, const char *secret,
318 const uint8_t *vector);
319 int rad_tunnel_pwdecode(uint8_t *encpw, int *len,
320 const char *secret, const uint8_t *vector);
321 int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
322 int id, VALUE_PAIR *password);
323 VALUE_PAIR *rad_attr2vp(const RADIUS_PACKET *packet, const RADIUS_PACKET *original,
324 const char *secret, int attribute, int length,
325 const uint8_t *data);
326 int rad_vp2attr(const RADIUS_PACKET *packet,
327 const RADIUS_PACKET *original, const char *secret,
328 const VALUE_PAIR *vp, uint8_t *ptr);
331 VALUE_PAIR *paircreate(int attr, int type);
332 void pairfree(VALUE_PAIR **);
333 void pairbasicfree(VALUE_PAIR *pair);
334 VALUE_PAIR *pairfind(VALUE_PAIR *, int);
335 void pairdelete(VALUE_PAIR **, int);
336 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
337 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
338 int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
339 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
340 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
341 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
342 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
343 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
344 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
345 VALUE_PAIR *pairread(char **ptr, LRAD_TOKEN *eol);
346 LRAD_TOKEN userparse(char *buffer, VALUE_PAIR **first_pair);
347 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
353 void librad_log(const char *, ...)
355 __attribute__ ((format (printf, 1, 2)))
359 void librad_perror(const char *, ...)
361 __attribute__ ((format (printf, 1, 2)))
364 extern char librad_errstr[];
365 extern int librad_dodns; /* 0 = no dns lookups */
366 extern int librad_debug; /* 0 = no debugging information */
367 extern int librad_max_attributes; /* per incoming packet */
370 * Several handy miscellaneous functions.
372 const char * ip_ntoa(char *, uint32_t);
373 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
374 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
375 char *strNcpy(char *dest, const char *src, int n);
376 int rad_lockfd(int fd, int lock_len);
377 int rad_lockfd_nonblock(int fd, int lock_len);
378 int rad_unlockfd(int fd, int lock_len);
379 void lrad_bin2hex(const uint8_t *bin, char *hex, int len);
380 int lrad_hex2bin(const char *hex, uint8_t *bin, int len);
381 #ifndef HAVE_INET_PTON
382 int inet_pton(int af, const char *src, void *dst);
384 #ifndef HAVE_INET_NTOP
385 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
387 #ifndef HAVE_CLOSEFROM
388 int closefrom(int fd);
391 int ip_hton(const char *src, int af, lrad_ipaddr_t *dst);
392 const char *ip_ntoh(const lrad_ipaddr_t *src, char *dst, size_t cnt);
397 int ascend_parse_filter(VALUE_PAIR *pair);
398 void print_abinary(VALUE_PAIR *vp, char *buffer, int len);
399 #endif /*ASCEND_BINARY*/
401 /* random numbers in isaac.c */
402 /* context of random number generator */
403 typedef struct lrad_randctx {
405 uint32_t randrsl[256];
406 uint32_t randmem[256];
412 void lrad_isaac(lrad_randctx *ctx);
413 void lrad_randinit(lrad_randctx *ctx, int flag);
414 uint32_t lrad_rand(void); /* like rand(), but better. */
415 void lrad_rand_seed(const void *, size_t ); /* seed the random pool */
418 /* crypt wrapper from crypt.c */
419 int lrad_crypt_check(const char *key, const char *salt);
422 typedef struct rbtree_t rbtree_t;
423 typedef struct rbnode_t rbnode_t;
425 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
426 void (*freeNode)(void *),
428 void rbtree_free(rbtree_t *tree);
429 int rbtree_insert(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_node2data(rbtree_t *tree, rbnode_t *node);
437 /* callback order for walking */
438 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
441 * The callback should be declared as:
442 * int callback(void *context, void *data)
444 * The "context" is some user-defined context.
445 * The "data" is the pointer to the user data in the node,
446 * NOT the node itself.
448 * It should return 0 if all is OK, and !0 for any error.
449 * The walking will stop on any error.
451 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
456 typedef struct lrad_fifo_t lrad_fifo_t;
457 typedef void (*lrad_fifo_free_t)(void *);
458 lrad_fifo_t *lrad_fifo_create(int max_entries, lrad_fifo_free_t freeNode);
459 void lrad_fifo_free(lrad_fifo_t *fi);
460 int lrad_fifo_push(lrad_fifo_t *fi, void *data);
461 void *lrad_fifo_pop(lrad_fifo_t *fi);
463 #include <freeradius-devel/packet.h>
465 #endif /*LIBRADIUS_H*/