1 #ifndef _ARPA_NAMESER_H 2 #define _ARPA_NAMESER_H 3 4 #ifdef __cplusplus 5 extern "C" { 6 #endif 7 8 #include <stddef.h> 9 #include <stdint.h> 10 #include <endian.h> 11 12 #define __NAMESER 19991006 13 #define NS_PACKETSZ 512 14 #define NS_MAXDNAME 1025 15 #define NS_MAXMSG 65535 16 #define NS_MAXCDNAME 255 17 #define NS_MAXLABEL 63 18 #define NS_HFIXEDSZ 12 19 #define NS_QFIXEDSZ 4 20 #define NS_RRFIXEDSZ 10 21 #define NS_INT32SZ 4 22 #define NS_INT16SZ 2 23 #define NS_INT8SZ 1 24 #define NS_INADDRSZ 4 25 #define NS_IN6ADDRSZ 16 26 #define NS_CMPRSFLGS 0xc0 27 #define NS_DEFAULTPORT 53 28 29 typedef enum __ns_sect { 30 ns_s_qd = 0, 31 ns_s_zn = 0, 32 ns_s_an = 1, 33 ns_s_pr = 1, 34 ns_s_ns = 2, 35 ns_s_ud = 2, 36 ns_s_ar = 3, 37 ns_s_max = 4 38 } ns_sect; 39 40 typedef struct __ns_msg { 41 const unsigned char *_msg, *_eom; 42 uint16_t _id, _flags, _counts[ns_s_max]; 43 const unsigned char *_sections[ns_s_max]; 44 ns_sect _sect; 45 int _rrnum; 46 const unsigned char *_msg_ptr; 47 } ns_msg; 48 49 struct _ns_flagdata { int mask, shift; }; 50 extern const struct _ns_flagdata _ns_flagdata[]; 51 52 #define ns_msg_id(handle) ((handle)._id + 0) 53 #define ns_msg_base(handle) ((handle)._msg + 0) 54 #define ns_msg_end(handle) ((handle)._eom + 0) 55 #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) 56 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 57 #define ns_msg_getflag(handle, flag) \ 58 (((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift) 59 60 typedef struct __ns_rr { 61 char name[NS_MAXDNAME]; 62 uint16_t type; 63 uint16_t rr_class; 64 uint32_t ttl; 65 uint16_t rdlength; 66 const unsigned char *rdata; 67 } ns_rr; 68 69 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 70 #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 71 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 72 #define ns_rr_ttl(rr) ((rr).ttl + 0) 73 #define ns_rr_rdlen(rr) ((rr).rdlength + 0) 74 #define ns_rr_rdata(rr) ((rr).rdata + 0) 75 76 typedef enum __ns_flag { 77 ns_f_qr, 78 ns_f_opcode, 79 ns_f_aa, 80 ns_f_tc, 81 ns_f_rd, 82 ns_f_ra, 83 ns_f_z, 84 ns_f_ad, 85 ns_f_cd, 86 ns_f_rcode, 87 ns_f_max 88 } ns_flag; 89 90 typedef enum __ns_opcode { 91 ns_o_query = 0, 92 ns_o_iquery = 1, 93 ns_o_status = 2, 94 ns_o_notify = 4, 95 ns_o_update = 5, 96 ns_o_max = 6 97 } ns_opcode; 98 99 typedef enum __ns_rcode { 100 ns_r_noerror = 0, 101 ns_r_formerr = 1, 102 ns_r_servfail = 2, 103 ns_r_nxdomain = 3, 104 ns_r_notimpl = 4, 105 ns_r_refused = 5, 106 ns_r_yxdomain = 6, 107 ns_r_yxrrset = 7, 108 ns_r_nxrrset = 8, 109 ns_r_notauth = 9, 110 ns_r_notzone = 10, 111 ns_r_max = 11, 112 ns_r_badvers = 16, 113 ns_r_badsig = 16, 114 ns_r_badkey = 17, 115 ns_r_badtime = 18 116 } ns_rcode; 117 118 typedef enum __ns_update_operation { 119 ns_uop_delete = 0, 120 ns_uop_add = 1, 121 ns_uop_max = 2 122 } ns_update_operation; 123 124 struct ns_tsig_key { 125 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 126 unsigned char *data; 127 int len; 128 }; 129 typedef struct ns_tsig_key ns_tsig_key; 130 131 struct ns_tcp_tsig_state { 132 int counter; 133 struct dst_key *key; 134 void *ctx; 135 unsigned char sig[NS_PACKETSZ]; 136 int siglen; 137 }; 138 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 139 140 #define NS_TSIG_FUDGE 300 141 #define NS_TSIG_TCP_COUNT 100 142 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 143 144 #define NS_TSIG_ERROR_NO_TSIG -10 145 #define NS_TSIG_ERROR_NO_SPACE -11 146 #define NS_TSIG_ERROR_FORMERR -12 147 148 typedef enum __ns_type { 149 ns_t_invalid = 0, 150 ns_t_a = 1, 151 ns_t_ns = 2, 152 ns_t_md = 3, 153 ns_t_mf = 4, 154 ns_t_cname = 5, 155 ns_t_soa = 6, 156 ns_t_mb = 7, 157 ns_t_mg = 8, 158 ns_t_mr = 9, 159 ns_t_null = 10, 160 ns_t_wks = 11, 161 ns_t_ptr = 12, 162 ns_t_hinfo = 13, 163 ns_t_minfo = 14, 164 ns_t_mx = 15, 165 ns_t_txt = 16, 166 ns_t_rp = 17, 167 ns_t_afsdb = 18, 168 ns_t_x25 = 19, 169 ns_t_isdn = 20, 170 ns_t_rt = 21, 171 ns_t_nsap = 22, 172 ns_t_nsap_ptr = 23, 173 ns_t_sig = 24, 174 ns_t_key = 25, 175 ns_t_px = 26, 176 ns_t_gpos = 27, 177 ns_t_aaaa = 28, 178 ns_t_loc = 29, 179 ns_t_nxt = 30, 180 ns_t_eid = 31, 181 ns_t_nimloc = 32, 182 ns_t_srv = 33, 183 ns_t_atma = 34, 184 ns_t_naptr = 35, 185 ns_t_kx = 36, 186 ns_t_cert = 37, 187 ns_t_a6 = 38, 188 ns_t_dname = 39, 189 ns_t_sink = 40, 190 ns_t_opt = 41, 191 ns_t_apl = 42, 192 ns_t_tkey = 249, 193 ns_t_tsig = 250, 194 ns_t_ixfr = 251, 195 ns_t_axfr = 252, 196 ns_t_mailb = 253, 197 ns_t_maila = 254, 198 ns_t_any = 255, 199 ns_t_zxfr = 256, 200 ns_t_max = 65536 201 } ns_type; 202 203 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 204 (t) == ns_t_mailb || (t) == ns_t_maila) 205 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 206 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 207 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 208 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 209 (t) == ns_t_zxfr) 210 211 typedef enum __ns_class { 212 ns_c_invalid = 0, 213 ns_c_in = 1, 214 ns_c_2 = 2, 215 ns_c_chaos = 3, 216 ns_c_hs = 4, 217 ns_c_none = 254, 218 ns_c_any = 255, 219 ns_c_max = 65536 220 } ns_class; 221 222 typedef enum __ns_key_types { 223 ns_kt_rsa = 1, 224 ns_kt_dh = 2, 225 ns_kt_dsa = 3, 226 ns_kt_private = 254 227 } ns_key_types; 228 229 typedef enum __ns_cert_types { 230 cert_t_pkix = 1, 231 cert_t_spki = 2, 232 cert_t_pgp = 3, 233 cert_t_url = 253, 234 cert_t_oid = 254 235 } ns_cert_types; 236 237 #define NS_KEY_TYPEMASK 0xC000 238 #define NS_KEY_TYPE_AUTH_CONF 0x0000 239 #define NS_KEY_TYPE_CONF_ONLY 0x8000 240 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 241 #define NS_KEY_TYPE_NO_KEY 0xC000 242 #define NS_KEY_NO_AUTH 0x8000 243 #define NS_KEY_NO_CONF 0x4000 244 #define NS_KEY_RESERVED2 0x2000 245 #define NS_KEY_EXTENDED_FLAGS 0x1000 246 #define NS_KEY_RESERVED4 0x0800 247 #define NS_KEY_RESERVED5 0x0400 248 #define NS_KEY_NAME_TYPE 0x0300 249 #define NS_KEY_NAME_USER 0x0000 250 #define NS_KEY_NAME_ENTITY 0x0200 251 #define NS_KEY_NAME_ZONE 0x0100 252 #define NS_KEY_NAME_RESERVED 0x0300 253 #define NS_KEY_RESERVED8 0x0080 254 #define NS_KEY_RESERVED9 0x0040 255 #define NS_KEY_RESERVED10 0x0020 256 #define NS_KEY_RESERVED11 0x0010 257 #define NS_KEY_SIGNATORYMASK 0x000F 258 #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 259 NS_KEY_RESERVED4 | \ 260 NS_KEY_RESERVED5 | \ 261 NS_KEY_RESERVED8 | \ 262 NS_KEY_RESERVED9 | \ 263 NS_KEY_RESERVED10 | \ 264 NS_KEY_RESERVED11 ) 265 #define NS_KEY_RESERVED_BITMASK2 0xFFFF 266 #define NS_ALG_MD5RSA 1 267 #define NS_ALG_DH 2 268 #define NS_ALG_DSA 3 269 #define NS_ALG_DSS NS_ALG_DSA 270 #define NS_ALG_EXPIRE_ONLY 253 271 #define NS_ALG_PRIVATE_OID 254 272 273 #define NS_KEY_PROT_TLS 1 274 #define NS_KEY_PROT_EMAIL 2 275 #define NS_KEY_PROT_DNSSEC 3 276 #define NS_KEY_PROT_IPSEC 4 277 #define NS_KEY_PROT_ANY 255 278 279 #define NS_MD5RSA_MIN_BITS 512 280 #define NS_MD5RSA_MAX_BITS 4096 281 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 282 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 283 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 284 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 285 286 #define NS_DSA_SIG_SIZE 41 287 #define NS_DSA_MIN_SIZE 213 288 #define NS_DSA_MAX_BYTES 405 289 290 #define NS_SIG_TYPE 0 291 #define NS_SIG_ALG 2 292 #define NS_SIG_LABELS 3 293 #define NS_SIG_OTTL 4 294 #define NS_SIG_EXPIR 8 295 #define NS_SIG_SIGNED 12 296 #define NS_SIG_FOOT 16 297 #define NS_SIG_SIGNER 18 298 #define NS_NXT_BITS 8 299 #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 300 #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 301 #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 302 #define NS_NXT_MAX 127 303 304 #define NS_OPT_DNSSEC_OK 0x8000U 305 #define NS_OPT_NSID 3 306 307 #define NS_GET16(s, cp) (void)((s) = ns_get16(((cp)+=2)-2)) 308 #define NS_GET32(l, cp) (void)((l) = ns_get32(((cp)+=4)-4)) 309 #define NS_PUT16(s, cp) ns_put16((s), ((cp)+=2)-2) 310 #define NS_PUT32(l, cp) ns_put32((l), ((cp)+=4)-4) 311 312 unsigned ns_get16(const unsigned char *); 313 unsigned long ns_get32(const unsigned char *); 314 void ns_put16(unsigned, unsigned char *); 315 void ns_put32(unsigned long, unsigned char *); 316 317 int ns_initparse(const unsigned char *, int, ns_msg *); 318 int ns_parserr(ns_msg *, ns_sect, int, ns_rr *); 319 int ns_skiprr(const unsigned char *, const unsigned char *, ns_sect, int); 320 int ns_name_uncompress(const unsigned char *, const unsigned char *, const unsigned char *, char *, size_t); 321 322 323 #define __BIND 19950621 324 325 typedef struct { 326 unsigned id :16; 327 #if __BYTE_ORDER == __BIG_ENDIAN 328 unsigned qr: 1; 329 unsigned opcode: 4; 330 unsigned aa: 1; 331 unsigned tc: 1; 332 unsigned rd: 1; 333 unsigned ra: 1; 334 unsigned unused :1; 335 unsigned ad: 1; 336 unsigned cd: 1; 337 unsigned rcode :4; 338 #else 339 unsigned rd :1; 340 unsigned tc :1; 341 unsigned aa :1; 342 unsigned opcode :4; 343 unsigned qr :1; 344 unsigned rcode :4; 345 unsigned cd: 1; 346 unsigned ad: 1; 347 unsigned unused :1; 348 unsigned ra :1; 349 #endif 350 unsigned qdcount :16; 351 unsigned ancount :16; 352 unsigned nscount :16; 353 unsigned arcount :16; 354 } HEADER; 355 356 #define PACKETSZ NS_PACKETSZ 357 #define MAXDNAME NS_MAXDNAME 358 #define MAXCDNAME NS_MAXCDNAME 359 #define MAXLABEL NS_MAXLABEL 360 #define HFIXEDSZ NS_HFIXEDSZ 361 #define QFIXEDSZ NS_QFIXEDSZ 362 #define RRFIXEDSZ NS_RRFIXEDSZ 363 #define INT32SZ NS_INT32SZ 364 #define INT16SZ NS_INT16SZ 365 #define INT8SZ NS_INT8SZ 366 #define INADDRSZ NS_INADDRSZ 367 #define IN6ADDRSZ NS_IN6ADDRSZ 368 #define INDIR_MASK NS_CMPRSFLGS 369 #define NAMESERVER_PORT NS_DEFAULTPORT 370 371 #define S_ZONE ns_s_zn 372 #define S_PREREQ ns_s_pr 373 #define S_UPDATE ns_s_ud 374 #define S_ADDT ns_s_ar 375 376 #define QUERY ns_o_query 377 #define IQUERY ns_o_iquery 378 #define STATUS ns_o_status 379 #define NS_NOTIFY_OP ns_o_notify 380 #define NS_UPDATE_OP ns_o_update 381 382 #define NOERROR ns_r_noerror 383 #define FORMERR ns_r_formerr 384 #define SERVFAIL ns_r_servfail 385 #define NXDOMAIN ns_r_nxdomain 386 #define NOTIMP ns_r_notimpl 387 #define REFUSED ns_r_refused 388 #define YXDOMAIN ns_r_yxdomain 389 #define YXRRSET ns_r_yxrrset 390 #define NXRRSET ns_r_nxrrset 391 #define NOTAUTH ns_r_notauth 392 #define NOTZONE ns_r_notzone 393 394 #define DELETE ns_uop_delete 395 #define ADD ns_uop_add 396 397 #define T_A ns_t_a 398 #define T_NS ns_t_ns 399 #define T_MD ns_t_md 400 #define T_MF ns_t_mf 401 #define T_CNAME ns_t_cname 402 #define T_SOA ns_t_soa 403 #define T_MB ns_t_mb 404 #define T_MG ns_t_mg 405 #define T_MR ns_t_mr 406 #define T_NULL ns_t_null 407 #define T_WKS ns_t_wks 408 #define T_PTR ns_t_ptr 409 #define T_HINFO ns_t_hinfo 410 #define T_MINFO ns_t_minfo 411 #define T_MX ns_t_mx 412 #define T_TXT ns_t_txt 413 #define T_RP ns_t_rp 414 #define T_AFSDB ns_t_afsdb 415 #define T_X25 ns_t_x25 416 #define T_ISDN ns_t_isdn 417 #define T_RT ns_t_rt 418 #define T_NSAP ns_t_nsap 419 #define T_NSAP_PTR ns_t_nsap_ptr 420 #define T_SIG ns_t_sig 421 #define T_KEY ns_t_key 422 #define T_PX ns_t_px 423 #define T_GPOS ns_t_gpos 424 #define T_AAAA ns_t_aaaa 425 #define T_LOC ns_t_loc 426 #define T_NXT ns_t_nxt 427 #define T_EID ns_t_eid 428 #define T_NIMLOC ns_t_nimloc 429 #define T_SRV ns_t_srv 430 #define T_ATMA ns_t_atma 431 #define T_NAPTR ns_t_naptr 432 #define T_A6 ns_t_a6 433 #define T_DNAME ns_t_dname 434 #define T_TSIG ns_t_tsig 435 #define T_IXFR ns_t_ixfr 436 #define T_AXFR ns_t_axfr 437 #define T_MAILB ns_t_mailb 438 #define T_MAILA ns_t_maila 439 #define T_ANY ns_t_any 440 441 #define C_IN ns_c_in 442 #define C_CHAOS ns_c_chaos 443 #define C_HS ns_c_hs 444 #define C_NONE ns_c_none 445 #define C_ANY ns_c_any 446 447 #define GETSHORT NS_GET16 448 #define GETLONG NS_GET32 449 #define PUTSHORT NS_PUT16 450 #define PUTLONG NS_PUT32 451 452 #ifdef __cplusplus 453 } 454 #endif 455 456 #endif 457