5 * libradius.h Structures and prototypes
6 * for the radius library.
13 #ifdef HAVE_SYS_TYPES_H
14 #include <sys/types.h>
21 #ifdef HAVE_INTTYPES_H
32 * Check for inclusion of <time.h>, versus <sys/time.h>
33 * Taken verbatim from the autoconf manual.
35 #if TIME_WITH_SYS_TIME
36 # include <sys/time.h>
39 # ifdef HAVE_SYS_TIME_H
40 # include <sys/time.h>
49 #ifdef SIZEOF_UNSIGNED_INT
50 #if SIZEOF_UNSIGNED_INT != 4
51 #error FATAL: sizeof(unsigned int) != 4
56 * Include for modules.
63 #define AUTH_VECTOR_LEN 16
64 #define CHAP_VALUE_LENGTH 16
65 #define MAX_STRING_LEN 254 /* RFC2138: string 0-253 octets */
68 # define AUTH_HDR_LEN 20
69 # define VENDORPEC_USR 429
70 # define VENDOR(x) ((x >> 16) & 0xffff)
71 # define DEBUG if (librad_debug) printf
72 # define debug_pair(vp) do { if (librad_debug) { \
74 vp_print(stdout, vp); \
78 # define TAG_VALID(x) ((x) > 0 && (x) < 0x20)
79 # define TAG_VALID_ZERO(x) ((x) >= 0 && (x) < 0x20)
80 # define TAG_ANY -128 /* minimum signed char */
84 # define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
85 # define NEVER_RETURNS __attribute__ ((noreturn))
86 # define UNUSED __attribute__ ((unused))
87 # define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
89 # define PRINTF_LIKE(n) /* ignore */
90 # define NEVER_RETURNS /* ignore */
91 # define UNUSED /* ignore */
92 # define BLANK_FORMAT ""
95 typedef struct attr_flags {
96 unsigned int addport : 1; /* add NAS-Port to IP address */
97 unsigned int has_tag : 1; /* tagged attribute */
98 unsigned int do_xlat : 1; /* strvalue is dynamic */
99 unsigned int caseless : 1; /* case insensitive compares */
100 int8_t tag; /* tag for tunneled attributes */
101 uint8_t encrypt; /* encryption method */
105 * Values of the encryption flags.
107 #define FLAG_ENCRYPT_NONE (0)
108 #define FLAG_ENCRYPT_USER_PASSWORD (1)
109 #define FLAG_ENCRYPT_TUNNEL_PASSWORD (2)
110 #define FLAG_ENCRYPT_ASCEND_SECRET (3)
112 typedef struct dict_attr {
120 typedef struct dict_value {
126 typedef struct dict_vendor {
129 struct dict_vendor *next;
132 typedef struct value_pair {
136 int length; /* of strvalue */
139 uint8_t strvalue[MAX_STRING_LEN];
141 struct value_pair *next;
145 * vector: Request authenticator from access-request packet
146 * Put in there by rad_decode, and must be put in the
147 * response RADIUS_PACKET as well before calling rad_send
149 * verified: Filled in by rad_decode for accounting-request packets
151 * data,data_len: Used between rad_recv and rad_decode.
153 typedef struct radius_packet {
161 uint8_t vector[AUTH_VECTOR_LEN];
170 * Printing functions.
172 void librad_safeprint(char *in, int inlen, char *out, int outlen);
173 int vp_prints_value(char *out, int outlen, VALUE_PAIR *vp,int delimitst);
174 int vp_prints(char *out, int outlen, VALUE_PAIR *vp);
175 void vp_print(FILE *, VALUE_PAIR *);
176 void vp_printlist(FILE *, VALUE_PAIR *);
177 #define fprint_attr_val vp_print
180 * Dictionary functions.
182 int dict_addvendor(const char *name, int value);
183 int dict_addattr(const char *name, int vendor, int type, int value, ATTR_FLAGS flags);
184 int dict_addvalue(const char *namestr, char *attrstr, int value);
185 int dict_init(const char *dir, const char *fn);
186 void dict_free(void);
187 DICT_ATTR *dict_attrbyvalue(int attr);
188 DICT_ATTR *dict_attrbyname(const char *attr);
189 DICT_VALUE *dict_valbyattr(int attr, int val);
190 DICT_VALUE *dict_valbyname(int attr, const char *val);
191 int dict_vendorbyname(const char *name);
192 DICT_VENDOR *dict_vendorbyvalue(int vendor);
197 #define dict_vendorcode
198 #define dict_vendorpec
201 #if 1 /* FIXME: compat */
202 #define dict_attrget dict_attrbyvalue
203 #define dict_attrfind dict_attrbyname
204 #define dict_valfind dict_valbyname
205 /*#define dict_valget dict_valbyattr almost but not quite*/
208 /* get around diffrent ctime_r styles */
210 #if CTIMERSTYLE == SOLARISSTYLE
211 #define CTIME_R(a,b,c) ctime_r(a,b,c)
213 #define CTIME_R(a,b,c) ctime_r(a,b)
216 #define CTIME_R(a,b,c) ctime_r(a,b)
221 void librad_md5_calc(u_char *, u_char *, u_int);
225 void lrad_hmac_md5(const unsigned char *text, int text_len,
226 const unsigned char *key, int key_len,
227 unsigned char *digest);
231 void lrad_hmac_sha1(const unsigned char *text, int text_len,
232 const unsigned char *key, int key_len,
233 unsigned char *digest);
236 int rad_send(RADIUS_PACKET *, const RADIUS_PACKET *, const char *secret);
237 RADIUS_PACKET *rad_recv(int fd);
238 int rad_decode(RADIUS_PACKET *packet, RADIUS_PACKET *original, const char *secret);
239 RADIUS_PACKET *rad_alloc(int newvector);
240 void rad_free(RADIUS_PACKET **);
241 int rad_pwencode(char *encpw, int *len, const char *secret, const char *vector);
242 int rad_pwdecode(char *encpw, int len, const char *secret, const char *vector);
243 int rad_tunnel_pwencode(char *encpw, int *len, const char *secret, const char *vector);
244 int rad_tunnel_pwdecode(uint8_t *encpw, int *len, const char *secret, const char *vector);
245 int rad_chap_encode(RADIUS_PACKET *packet, char *output, int id, VALUE_PAIR *password);
248 VALUE_PAIR *paircreate(int attr, int type);
249 void pairfree(VALUE_PAIR **);
250 void pairbasicfree(VALUE_PAIR *pair);
251 VALUE_PAIR *pairfind(VALUE_PAIR *, int);
252 void pairdelete(VALUE_PAIR **, int);
253 void pairadd(VALUE_PAIR **, VALUE_PAIR *);
254 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *add);
255 VALUE_PAIR *paircopy(VALUE_PAIR *vp);
256 VALUE_PAIR *paircopy2(VALUE_PAIR *vp, int attr);
257 void pairmove(VALUE_PAIR **to, VALUE_PAIR **from);
258 void pairmove2(VALUE_PAIR **to, VALUE_PAIR **from, int attr);
259 VALUE_PAIR *pairparsevalue(VALUE_PAIR *vp, const char *value);
260 VALUE_PAIR *pairmake(const char *attribute, const char *value, int operator);
261 VALUE_PAIR *pairread(char **ptr, LRAD_TOKEN *eol);
262 LRAD_TOKEN userparse(char *buffer, VALUE_PAIR **first_pair);
263 VALUE_PAIR *readvp2(FILE *fp, int *pfiledone, const char *errprefix);
269 void librad_log(const char *, ...)
271 __attribute__ ((format (printf, 1, 2)))
275 void librad_perror(const char *, ...)
277 __attribute__ ((format (printf, 1, 2)))
280 extern char librad_errstr[];
281 extern int librad_dodns; /* 0 = no dns lookups */
282 extern int librad_debug; /* 0 = no debugging information */
283 extern int librad_max_attributes; /* per incoming packet */
286 * Several handy miscellaneous functions.
288 char * ip_hostname (char *buf, size_t buflen, uint32_t ipaddr);
289 uint32_t ip_getaddr (const char *);
290 char * ip_ntoa(char *, uint32_t);
291 uint32_t ip_addr(const char *);
292 char *ifid_ntoa(char *buffer, size_t size, uint8_t *ifid);
293 uint8_t *ifid_aton(const char *ifid_str, uint8_t *ifid);
294 char *ipv6_ntoa(char *buffer, size_t size, void *ip6addr);
295 int ipv6_addr(const char *ip6_str, void *ip6addr);
296 char *strNcpy(char *dest, const char *src, int n);
297 void rad_lowercase(char *str);
298 void rad_rmspace(char *str);
299 int rad_lockfd(int fd, int lock_len);
300 int rad_lockfd_nonblock(int fd, int lock_len);
301 int rad_unlockfd(int fd, int lock_len);
305 int ascend_parse_filter(VALUE_PAIR *pair);
306 void print_abinary(VALUE_PAIR *vp, u_char *buffer, int len);
307 #endif /*ASCEND_BINARY*/
309 #ifdef HAVE_LOCAL_SNPRINTF
311 int snprintf(char *str, size_t count, const char *fmt, ...);
312 int vsnprintf(char *str, size_t count, const char *fmt, va_list arg);
315 /* random numbers in isaac.c */
316 /* context of random number generator */
317 typedef struct lrad_randctx {
319 uint32_t randrsl[256];
320 uint32_t randmem[256];
326 void lrad_isaac(lrad_randctx *ctx);
327 void lrad_randinit(lrad_randctx *ctx, int flag);
328 uint32_t lrad_rand(void); /* like rand(), but better. */
330 /* crypt wrapper from crypt.c */
331 int lrad_crypt_check(const char *key, const char *salt);
334 typedef struct rbtree_t rbtree_t;
335 typedef struct rbnode_t rbnode_t;
337 rbtree_t *rbtree_create(int (*Compare)(const void *, const void *),
338 void (*freeNode)(void *),
340 void rbtree_free(rbtree_t *tree);
341 int rbtree_insert(rbtree_t *tree, const void *Data);
342 void rbtree_delete(rbtree_t *tree, rbnode_t *Z);
343 int rbtree_deletebydata(rbtree_t *tree, const void *data);
344 rbnode_t *rbtree_find(rbtree_t *tree, const void *Data);
345 void *rbtree_finddata(rbtree_t *tree, const void *Data);
346 int rbtree_num_elements(rbtree_t *tree);
347 void *rbtree_node2data(rbtree_t *tree, rbnode_t *node);
349 /* callback order for walking */
350 typedef enum { PreOrder, InOrder, PostOrder } RBTREE_ORDER;
353 * The callback should be declared as:
354 * int callback(void *context, void *data)
356 * The "context" is some user-defined context.
357 * The "data" is the pointer to the user data in the node,
358 * NOT the node itself.
360 * It should return 0 if all is OK, and !0 for any error.
361 * The walking will stop on any error.
363 int rbtree_walk(rbtree_t *tree, RBTREE_ORDER order, int (*callback)(void *, void *), void *context);
365 #endif /*LIBRADIUS_H*/