5 * libradius.h Structures and prototypes
6 * for the radius library.
14 #ifdef HAVE_SYS_TYPES_H
15 #include <sys/types.h>
22 #ifdef HAVE_INTTYPES_H
33 * Check for inclusion of <time.h>, versus <sys/time.h>
34 * Taken verbatim from the autoconf manual.
36 #if TIME_WITH_SYS_TIME
37 # include <sys/time.h>
40 # ifdef HAVE_SYS_TIME_H
41 # include <sys/time.h>
50 #ifdef SIZEOF_UNSIGNED_INT
51 #if SIZEOF_UNSIGNED_INT != 4
52 #error FATAL: sizeof(unsigned int) != 4
57 * Include for modules.
64 #define AUTH_VECTOR_LEN 16
65 #define CHAP_VALUE_LENGTH 16
66 #define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
68 # define VENDOR(x) ((x >> 16) & 0xffff)
71 # define AUTH_HDR_LEN 20
72 # define VENDORPEC_USR 429
73 #define VENDORPEC_LUCENT 4846
74 #define VENDORPEC_STARENT 8164
75 # define DEBUG if (librad_debug) printf
76 # define debug_pair(vp) do { if (librad_debug) { \
78 vp_print(stdout, vp); \
82 # define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
83 # define TAG_VALID_ZERO(x) ((x) >= 0 && (x) < 0x20)
84 # define TAG_ANY -128 /* minimum signed char */
88 # define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
89 # define NEVER_RETURNS __attribute__ ((noreturn))
90 # define UNUSED __attribute__ ((unused))
91 # define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
93 # define PRINTF_LIKE(n) /* ignore */
94 # define NEVER_RETURNS /* ignore */
95 # define UNUSED /* ignore */
96 # define BLANK_FORMAT ""
99 typedef struct attr_flags {
100 char addport; /* Add port to IP address */
101 char has_tag; /* attribute allows tags */
102 signed char len_disp; /* length displacement */
105 uint8_t encrypt; /* encryption method */
109 * Values of the encryption flags.
111 #define FLAG_ENCRYPT_NONE (0)
112 #define FLAG_ENCRYPT_USER_PASSWORD (1)
113 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
114 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
116 typedef struct dict_attr {
124 typedef struct dict_value {
130 typedef struct dict_vendor {
132 int type; /* length of type data */
133 int length; /* length of length data */
137 typedef struct value_pair {
141 int length; /* of strvalue */
144 uint8_t strvalue[MAX_STRING_LEN];
146 struct value_pair *next;
150 * vector: Request authenticator from access-request packet
151 * Put in there by rad_decode, and must be put in the
152 * response RADIUS_PACKET as well before calling rad_send
154 * verified: Filled in by rad_decode for accounting-request packets
156 * data,data_len: Used between rad_recv and rad_decode.
158 typedef struct radius_packet {
166 uint8_t vector[AUTH_VECTOR_LEN];
175 * Printing functions.
177 void librad_safeprint(char *in, int inlen, char *out, int outlen);
178 int vp_prints_value(char *out, int outlen, VALUE_PAIR *vp,int delimitst);
179 int vp_prints(char *out, int outlen, VALUE_PAIR *vp);
180 void vp_print(FILE *, VALUE_PAIR *);
181 void vp_printlist(FILE *, VALUE_PAIR *);
182 #define fprint_attr_val vp_print
185 * Dictionary functions.
187 int dict_addvendor(const char *name, int value);
188 int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
189 int dict_addvalue(const char *namestr, const char *attrstr, int value);
190 int dict_init(const char *dir, const char *fn);
191 void dict_free(void);
192 DICT_ATTR *dict_attrbyvalue(int attr);
193 DICT_ATTR *dict_attrbyname(const char *attr);
194 DICT_VALUE *dict_valbyattr(int attr, int val);
195 DICT_VALUE *dict_valbyname(int attr, const char *val);
196 int dict_vendorbyname(const char *name);
197 DICT_VENDOR *dict_vendorbyvalue(int vendor);
202 #define dict_vendorcode
203 #define dict_vendorpec
206 #if 1 /* FIXME: compat */
207 #define dict_attrget dict_attrbyvalue
208 #define dict_attrfind dict_attrbyname
209 #define dict_valfind dict_valbyname
210 /*#define dict_valget dict_valbyattr almost but not quite*/
213 /* get around diffrent ctime_r styles */
215 #if CTIMERSTYLE == SOLARISSTYLE
216 #define CTIME_R(a,b,c) ctime_r(a,b,c)
218 #define CTIME_R(a,b,c) ctime_r(a,b)
221 #define CTIME_R(a,b,c) ctime_r(a,b)
226 void librad_md5_calc(u_char *, u_char *, u_int);
230 void lrad_hmac_md5(const unsigned char *text, int text_len,
231 const unsigned char *key, int key_len,
232 unsigned char *digest);
236 void lrad_hmac_sha1(const unsigned char *text, int text_len,
237 const unsigned char *key, int key_len,
238 unsigned char *digest);
241 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
242 RADIUS_PACKET *rad_recv(int fd);
243 int rad_verify(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
244 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
245 RADIUS_PACKET *rad_alloc(int newvector);
246 void rad_free(RADIUS_PACKET **);
247 int rad_pwencode(char *encpw, int *len, const char *secret, const char *vector);
248 int rad_pwdecode(char *encpw, int len, const char *secret, const char *vector);
249 int rad_tunnel_pwencode(char *encpw, int *len, const char *secret, const char *vector);
250 int rad_tunnel_pwdecode(uint8_t *encpw, int *len, const char *secret, const char *vector);
251 int rad_chap_encode(RADIUS_PACKET *packet, char *output, int id, VALUE_PAIR *password);
252 int rad_vp2attr(const RADIUS_PACKET *packet,
253 const RADIUS_PACKET *original, const char *secret,
254 const VALUE_PAIR *vp, uint8_t *ptr);
255 int rad_encode(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
257 int rad_sign(RADIUS_PACKET *packet, const RADIUS_PACKET *original,
261 VALUE_PAIR *paircreate(int attr, int type);
262 void pairfree(VALUE_PAIR **);
263 void pairbasicfree(VALUE_PAIR *pair);
264 VALUE_PAIR *pairfind(VALUE_PAIR *, int);
265 void pairdelete(VALUE_PAIR **, int);
266 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
267 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
268 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
269 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
270 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
271 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
272 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
273 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
274 VALUE_PAIR *pairread(char **ptr, LRAD_TOKEN *eol);
275 LRAD_TOKEN userparse(char *buffer, VALUE_PAIR **first_pair);
276 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
282 void librad_log(const char *, ...)
284 __attribute__ ((format (printf, 1, 2)))
288 void librad_perror(const char *, ...)
290 __attribute__ ((format (printf, 1, 2)))
293 extern char librad_errstr[];
294 extern int librad_dodns; /* 0 = no dns lookups */
295 extern int librad_debug; /* 0 = no debugging information */
296 extern int librad_max_attributes; /* per incoming packet */
299 * Several handy miscellaneous functions.
301 char * ip_hostname (char *buf, size_t buflen, uint32_t ipaddr);
302 uint32_t ip_getaddr (const char *);
303 char * ip_ntoa(char *, uint32_t);
304 uint32_t ip_addr(const char *);
305 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
306 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
307 const char *ipv6_ntoa(char *buffer, size_t size, void *ip6addr);
308 int ipv6_addr(const char *ip6_str, void *ip6addr);
309 char *strNcpy(char *dest, const char *src, int n);
310 void rad_lowercase(char *str);
311 void rad_rmspace(char *str);
312 int rad_lockfd(int fd, int lock_len);
313 int rad_lockfd_nonblock(int fd, int lock_len);
314 int rad_unlockfd(int fd, int lock_len);
315 void lrad_bin2hex(const uint8_t *bin, char *hex, int len);
316 int lrad_hex2bin(const char *hex, uint8_t *bin, int len);
317 #ifndef HAVE_CLOSEFROM
318 int closefrom(int fd);
323 int ascend_parse_filter(VALUE_PAIR *pair);
324 void print_abinary(VALUE_PAIR *vp, u_char *buffer, int len);
325 #endif /*ASCEND_BINARY*/
328 #ifndef HAVE_VSNPRINTF
330 int vsnprintf(char *str, size_t count, const char *fmt, va_list arg);
332 #ifndef HAVE_SNPRINTF
333 int snprintf(char *str, size_t count, const char *fmt, ...);
336 /* random numbers in isaac.c */
337 /* context of random number generator */
338 typedef struct lrad_randctx {
340 uint32_t randrsl[256];
341 uint32_t randmem[256];
347 void lrad_isaac(lrad_randctx *ctx);
348 void lrad_randinit(lrad_randctx *ctx, int flag);
349 uint32_t lrad_rand(void); /* like rand(), but better. */
350 void lrad_rand_seed(const void *, size_t ); /* seed the random pool */
352 /* crypt wrapper from crypt.c */
353 int lrad_crypt_check(const char *key, const char *salt);
356 typedef struct rbtree_t rbtree_t;
357 typedef struct rbnode_t rbnode_t;
359 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
360 void (*freeNode)(void *),
362 void rbtree_free(rbtree_t *tree);
363 int rbtree_insert(rbtree_t *tree, void *Data);
364 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
365 rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
366 void *rbtree_finddata(rbtree_t *tree, const void *Data);
367 int rbtree_num_elements(rbtree_t *tree);
368 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
369 int rbtree_deletebydata(rbtree_t *tree, const void *data);
371 /* callback order for walking */
372 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
373 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
376 * Fast hash, which isn't too bad. Don't use for cryptography,
377 * just for hashing internal data.
379 uint32_t lrad_hash(const void *, size_t);
380 uint32_t lrad_hash_update(const void *data, size_t size, uint32_t hash);
381 uint32_t lrad_hash_string(const char *p);
384 * If you need fewer than 32-bits of hash, use this macro to get
385 * the number of bits in the hash you need. The upper bits of the
386 * hash will be set to zero.
388 uint32_t lrad_hash_fold(uint32_t hash, int bits);
390 typedef struct lrad_hash_table_t lrad_hash_table_t;
391 typedef void (*lrad_hash_table_free_t)(void *);
392 typedef uint32_t (*lrad_hash_table_hash_t)(const void *);
393 typedef int (*lrad_hash_table_cmp_t)(const void *, const void *);
394 typedef int (*lrad_hash_table_walk_t)(void * /* ctx */, void * /* data */);
396 lrad_hash_table_t *lrad_hash_table_create(lrad_hash_table_hash_t hashNode,
397 lrad_hash_table_cmp_t cmpNode,
398 lrad_hash_table_free_t freeNode);
399 void lrad_hash_table_free(lrad_hash_table_t *ht);
400 int lrad_hash_table_insert(lrad_hash_table_t *ht, void *data);
401 int lrad_hash_table_delete(lrad_hash_table_t *ht, const void *data);
402 void *lrad_hash_table_yank(lrad_hash_table_t *ht, const void *data);
403 int lrad_hash_table_replace(lrad_hash_table_t *ht, void *data);
404 void *lrad_hash_table_finddata(lrad_hash_table_t *ht, const void *data);
405 int lrad_hash_table_num_elements(lrad_hash_table_t *ht);
406 int lrad_hash_table_walk(lrad_hash_table_t *ht,
407 lrad_hash_table_walk_t callback,
409 #endif /*LIBRADIUS_H*/