5 * libradius.h Structures and prototypes
6 * for the radius library.
12 #ifdef HAVE_SYS_TYPES_H
13 #include <sys/types.h>
20 #ifdef HAVE_INTTYPES_H
28 #ifdef HAVE_NETINET_IN_H
29 #include <netinet/in.h>
32 #ifdef HAVE_ARPA_INET_H
33 #include <arpa/inet.h>
36 #ifdef HAVE_SYS_SOCKET_H
37 #include <sys/socket.h>
43 * Check for inclusion of <time.h>, versus <sys/time.h>
44 * Taken verbatim from the autoconf manual.
46 #if TIME_WITH_SYS_TIME
47 # include <sys/time.h>
50 # ifdef HAVE_SYS_TIME_H
51 # include <sys/time.h>
60 #ifdef SIZEOF_UNSIGNED_INT
61 #if SIZEOF_UNSIGNED_INT != 4
62 #error FATAL: sizeof(unsigned int) != 4
67 * Include for modules.
74 #define AUTH_VECTOR_LEN 16
75 #define CHAP_VALUE_LENGTH 16
76 #define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
79 # define AUTH_HDR_LEN 20
80 # define VENDORPEC_USR 429
81 #define VENDORPEC_LUCENT 4846
82 # define VENDOR(x) ((x >> 16) & 0xffff)
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 int8_t tag; /* tag for tunneled attributes */
113 uint8_t encrypt; /* encryption method */
117 * Values of the encryption flags.
119 #define FLAG_ENCRYPT_NONE (0)
120 #define FLAG_ENCRYPT_USER_PASSWORD (1)
121 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
122 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
124 typedef struct dict_attr {
132 typedef struct dict_value {
138 typedef struct dict_vendor {
143 typedef struct value_pair {
147 int length; /* of data */
149 uint32_t lvalue; /* DELETE ME ASAP */
151 char strvalue[MAX_STRING_LEN];
152 uint8_t octets[MAX_STRING_LEN];
153 struct in_addr ipaddr;
154 struct in6_addr ipv6addr;
158 uint8_t ifid[8]; /* struct? */
159 uint8_t ipv6prefix[18]; /* struct? */
162 struct value_pair *next;
164 #define vp_strvalue data.strvalue
165 #define vp_octets data.octets
166 #define vp_ipaddr lvalue
167 #define vp_ipv6addr data.ipv6addr
168 #define vp_data lvalue
169 #define vp_integer lvalue
170 #define vp_ifid data.ifid
171 #define vp_ipv6prefix data.ipv6prefix
172 #define vp_filter data.filter
175 typedef struct lrad_ipaddr_t {
176 int af; /* address family */
178 struct in_addr ip4addr;
179 struct in6_addr ip6addr; /* maybe defined in missing.h */
185 * vector: Request authenticator from access-request packet
186 * Put in there by rad_decode, and must be put in the
187 * response RADIUS_PACKET as well before calling rad_send
189 * verified: Filled in by rad_decode for accounting-request packets
191 * data,data_len: Used between rad_recv and rad_decode.
193 typedef struct radius_packet {
195 lrad_ipaddr_t src_ipaddr;
196 lrad_ipaddr_t dst_ipaddr;
201 uint8_t vector[AUTH_VECTOR_LEN];
211 * Printing functions.
213 void librad_safeprint(char *in, int inlen, char *out, int outlen);
214 int vp_prints_value(char *out, int outlen, VALUE_PAIR *vp,int delimitst);
215 int vp_prints(char *out, int outlen, VALUE_PAIR *vp);
216 void vp_print(FILE *, VALUE_PAIR *);
217 void vp_printlist(FILE *, VALUE_PAIR *);
218 #define fprint_attr_val vp_print
221 * Dictionary functions.
223 int dict_addvendor(const char *name, int value);
224 int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
225 int dict_addvalue(const char *namestr, const char *attrstr, int value);
226 int dict_init(const char *dir, const char *fn);
227 void dict_free(void);
228 DICT_ATTR *dict_attrbyvalue(int attr);
229 DICT_ATTR *dict_attrbyname(const char *attr);
230 DICT_VALUE *dict_valbyattr(int attr, int val);
231 DICT_VALUE *dict_valbyname(int attr, const char *val);
232 int dict_vendorbyname(const char *name);
233 DICT_VENDOR *dict_vendorbyvalue(int vendor);
235 #if 1 /* FIXME: compat */
236 #define dict_attrget dict_attrbyvalue
237 #define dict_attrfind dict_attrbyname
238 #define dict_valfind dict_valbyname
239 /*#define dict_valget dict_valbyattr almost but not quite*/
242 /* get around diffrent ctime_r styles */
244 #if CTIMERSTYLE == SOLARISSTYLE
245 #define CTIME_R(a,b,c) ctime_r(a,b,c)
247 #define CTIME_R(a,b,c) ctime_r(a,b)
250 #define CTIME_R(a,b,c) ctime_r(a,b)
255 void librad_md5_calc(uint8_t *, const uint8_t *, unsigned int);
259 void lrad_hmac_md5(const uint8_t *text, int text_len,
260 const uint8_t *key, int key_len,
261 unsigned char *digest);
265 void lrad_hmac_sha1(const uint8_t *text, int text_len,
266 const uint8_t *key, int key_len,
270 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
271 RADIUS_PACKET *rad_recv(int fd);
272 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original,
274 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
275 int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
277 int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
280 RADIUS_PACKET *rad_alloc(int newvector);
281 void rad_free(RADIUS_PACKET **);
282 int rad_pwencode(char *encpw, int *len, const char *secret,
283 const uint8_t *vector);
284 int rad_pwdecode(char *encpw, int len, const char *secret,
285 const uint8_t *vector);
286 int rad_tunnel_pwencode(char *encpw, int *len, const char *secret,
287 const uint8_t *vector);
288 int rad_tunnel_pwdecode(uint8_t *encpw, int *len,
289 const char *secret, const uint8_t *vector);
290 int rad_chap_encode(RADIUS_PACKET *packet, uint8_t *output,
291 int id, VALUE_PAIR *password);
292 VALUE_PAIR *rad_attr2vp(const RADIUS_PACKET *packet, const RADIUS_PACKET *original,
293 const char *secret, int attribute, int length,
294 const uint8_t *data);
295 int rad_vp2attr(const RADIUS_PACKET *packet,
296 const RADIUS_PACKET *original, const char *secret,
297 const VALUE_PAIR *vp, uint8_t *ptr);
300 VALUE_PAIR *paircreate(int attr, int type);
301 void pairfree(VALUE_PAIR **);
302 void pairbasicfree(VALUE_PAIR *pair);
303 VALUE_PAIR *pairfind(VALUE_PAIR *, int);
304 void pairdelete(VALUE_PAIR **, int);
305 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
306 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
307 int paircmp(VALUE_PAIR *check, VALUE_PAIR *data);
308 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
309 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
310 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
311 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
312 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
313 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
314 VALUE_PAIR *pairread(char **ptr, LRAD_TOKEN *eol);
315 LRAD_TOKEN userparse(char *buffer, VALUE_PAIR **first_pair);
316 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
322 void librad_log(const char *, ...)
324 __attribute__ ((format (printf, 1, 2)))
328 void librad_perror(const char *, ...)
330 __attribute__ ((format (printf, 1, 2)))
333 extern char librad_errstr[];
334 extern int librad_dodns; /* 0 = no dns lookups */
335 extern int librad_debug; /* 0 = no debugging information */
336 extern int librad_max_attributes; /* per incoming packet */
339 * Several handy miscellaneous functions.
341 const char * ip_ntoa(char *, uint32_t);
342 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
343 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
344 char *strNcpy(char *dest, const char *src, int n);
345 int rad_lockfd(int fd, int lock_len);
346 int rad_lockfd_nonblock(int fd, int lock_len);
347 int rad_unlockfd(int fd, int lock_len);
348 void lrad_bin2hex(const uint8_t *bin, char *hex, int len);
349 int lrad_hex2bin(const char *hex, uint8_t *bin, int len);
350 #ifndef HAVE_INET_PTON
351 int inet_pton(int af, const char *src, void *dst);
353 #ifndef HAVE_INET_NTOP
354 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
356 #ifndef HAVE_CLOSEFROM
357 int closefrom(int fd);
360 int ip_hton(const char *src, int af, lrad_ipaddr_t *dst);
361 const char *ip_ntoh(const lrad_ipaddr_t *src, char *dst, size_t cnt);
366 int ascend_parse_filter(VALUE_PAIR *pair);
367 void print_abinary(VALUE_PAIR *vp, char *buffer, int len);
368 #endif /*ASCEND_BINARY*/
370 /* random numbers in isaac.c */
371 /* context of random number generator */
372 typedef struct lrad_randctx {
374 uint32_t randrsl[256];
375 uint32_t randmem[256];
381 void lrad_isaac(lrad_randctx *ctx);
382 void lrad_randinit(lrad_randctx *ctx, int flag);
383 uint32_t lrad_rand(void); /* like rand(), but better. */
384 void lrad_rand_seed(const void *, size_t ); /* seed the random pool */
388 * Fast hash, which isn't too bad. Don't use for cryptography,
389 * just for hashing internal data.
391 uint32_t lrad_hash(const void *, size_t);
392 uint32_t lrad_hash_update(const void *data, size_t size, uint32_t hash);
395 * If you need fewer than 32-bits of hash, use this macro to get
396 * the number of bits in the hash you need. The upper bits of the
397 * hash will be set to zero.
399 uint32_t lrad_hash_fold(uint32_t hash, int bits);
401 /* crypt wrapper from crypt.c */
402 int lrad_crypt_check(const char *key, const char *salt);
405 typedef struct rbtree_t rbtree_t;
406 typedef struct rbnode_t rbnode_t;
408 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
409 void (*freeNode)(void *),
411 void rbtree_free(rbtree_t *tree);
412 int rbtree_insert(rbtree_t *tree, void *Data);
413 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
414 int rbtree_deletebydata(rbtree_t *tree, const void *data);
415 rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
416 void *rbtree_finddata(rbtree_t *tree, const void *Data);
417 int rbtree_num_elements(rbtree_t *tree);
418 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
420 /* callback order for walking */
421 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
424 * The callback should be declared as:
425 * int callback(void *context, void *data)
427 * The "context" is some user-defined context.
428 * The "data" is the pointer to the user data in the node,
429 * NOT the node itself.
431 * It should return 0 if all is OK, and !0 for any error.
432 * The walking will stop on any error.
434 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
437 typedef struct lrad_hash_table_t lrad_hash_table_t;
439 lrad_hash_table_t *lrad_hash_table_create(int size, void (*freeNode)(void *),
441 void lrad_hash_table_free(lrad_hash_table_t *ht);
442 int lrad_hash_table_insert(lrad_hash_table_t *ht, uint32_t key,
444 int lrad_hash_table_delete(lrad_hash_table_t *ht, uint32_t key);
445 void *lrad_hash_table_finddata(lrad_hash_table_t *ht, uint32_t key);
446 int lrad_hash_table_num_elements(lrad_hash_table_t *ht);
447 int lrad_hash_table_walk(lrad_hash_table_t *ht,
448 int (*callback)(void * /* ctx */,
451 int lrad_hash_table_set_data_size(lrad_hash_table_t *ht,
454 #endif /*LIBRADIUS_H*/