str2wire.h revision 287915
1/** 2 * str2wire.h - read txt presentation of RRs 3 * 4 * (c) NLnet Labs, 2005-2006 5 * 6 * See the file LICENSE for the license 7 */ 8 9/** 10 * \file 11 * 12 * Parses text to wireformat. 13 */ 14 15#ifndef LDNS_STR2WIRE_H 16#define LDNS_STR2WIRE_H 17 18/* include rrdef for MAX_DOMAINLEN constant */ 19#include <sldns/rrdef.h> 20 21#ifdef __cplusplus 22extern "C" { 23#endif 24struct sldns_struct_lookup_table; 25 26/** buffer to read an RR, cannot be larger than 64K because of packet size */ 27#define LDNS_RR_BUF_SIZE 65535 /* bytes */ 28#define LDNS_DEFAULT_TTL 3600 29 30/* 31 * To convert class and type to string see 32 * sldns_get_rr_class_by_name(str) 33 * sldns_get_rr_type_by_name(str) 34 * from rrdef.h 35 */ 36 37/** 38 * Convert text string into dname wireformat, mallocless, with user buffer. 39 * @param str: the text string with the domain name. 40 * @param buf: the result buffer, suggested size LDNS_MAX_DOMAINLEN+1 41 * @param len: length of the buffer on input, length of the result on output. 42 * @return 0 on success, otherwise an error. 43 */ 44int sldns_str2wire_dname_buf(const char* str, uint8_t* buf, size_t* len); 45 46/** 47 * Same as sldns_str2wire_dname_buf, but concatenates origin if the domain 48 * name is relative (does not end in '.'). 49 * @param str: the text string with the domain name. 50 * @param buf: the result buffer, suggested size LDNS_MAX_DOMAINLEN+1 51 * @param len: length of the buffer on input, length of the result on output. 52 * @param origin: the origin to append or NULL (nothing is appended). 53 * @param origin_len: length of origin. 54 * @return 0 on success, otherwise an error. 55 */ 56int sldns_str2wire_dname_buf_origin(const char* str, uint8_t* buf, size_t* len, 57 uint8_t* origin, size_t origin_len); 58 59/** 60 * Convert text string into dname wireformat 61 * @param str: the text string with the domain name. 62 * @param len: returned length of wireformat. 63 * @return wireformat dname (malloced) or NULL on failure. 64 */ 65uint8_t* sldns_str2wire_dname(const char* str, size_t* len); 66 67/** 68 * Convert text RR to wireformat, with user buffer. 69 * @param str: the RR data in text presentation format. 70 * @param rr: the buffer where the result is stored into. This buffer has 71 * the wire-dname(uncompressed), type, class, ttl, rdatalen, rdata. 72 * These values are probably not aligned, and in network format. 73 * Use the sldns_wirerr_get_xxx functions to access them safely. 74 * buffer size LDNS_RR_BUF_SIZE is suggested. 75 * @param len: on input the length of the buffer, on output the amount of 76 * the buffer used for the rr. 77 * @param dname_len: if non-NULL, filled with the dname length as result. 78 * Because after the dname you find the type, class, ttl, rdatalen, rdata. 79 * @param default_ttl: TTL used if no TTL available. 80 * @param origin: used for origin dname (if not NULL) 81 * @param origin_len: length of origin. 82 * @param prev: used for prev_rr dname (if not NULL) 83 * @param prev_len: length of prev. 84 * @return 0 on success, an error on failure. 85 */ 86int sldns_str2wire_rr_buf(const char* str, uint8_t* rr, size_t* len, 87 size_t* dname_len, uint32_t default_ttl, uint8_t* origin, 88 size_t origin_len, uint8_t* prev, size_t prev_len); 89 90/** 91 * Same as sldns_str2wire_rr_buf, but there is no rdata, it returns an RR 92 * with zero rdata and no ttl. It has name, type, class. 93 * You can access those with the sldns_wirerr_get_type and class functions. 94 * @param str: the RR data in text presentation format. 95 * @param rr: the buffer where the result is stored into. 96 * @param len: on input the length of the buffer, on output the amount of 97 * the buffer used for the rr. 98 * @param dname_len: if non-NULL, filled with the dname length as result. 99 * Because after the dname you find the type, class, ttl, rdatalen, rdata. 100 * @param origin: used for origin dname (if not NULL) 101 * @param origin_len: length of origin. 102 * @param prev: used for prev_rr dname (if not NULL) 103 * @param prev_len: length of prev. 104 * @return 0 on success, an error on failure. 105 */ 106int sldns_str2wire_rr_question_buf(const char* str, uint8_t* rr, size_t* len, 107 size_t* dname_len, uint8_t* origin, size_t origin_len, uint8_t* prev, 108 size_t prev_len); 109 110/** 111 * Get the type of the RR. 112 * @param rr: the RR in wire format. 113 * @param len: rr length. 114 * @param dname_len: dname length to skip. 115 * @return type in host byteorder 116 */ 117uint16_t sldns_wirerr_get_type(uint8_t* rr, size_t len, size_t dname_len); 118 119/** 120 * Get the class of the RR. 121 * @param rr: the RR in wire format. 122 * @param len: rr length. 123 * @param dname_len: dname length to skip. 124 * @return class in host byteorder 125 */ 126uint16_t sldns_wirerr_get_class(uint8_t* rr, size_t len, size_t dname_len); 127 128/** 129 * Get the ttl of the RR. 130 * @param rr: the RR in wire format. 131 * @param len: rr length. 132 * @param dname_len: dname length to skip. 133 * @return ttl in host byteorder 134 */ 135uint32_t sldns_wirerr_get_ttl(uint8_t* rr, size_t len, size_t dname_len); 136 137/** 138 * Get the rdata length of the RR. 139 * @param rr: the RR in wire format. 140 * @param len: rr length. 141 * @param dname_len: dname length to skip. 142 * @return rdata length in host byteorder 143 * If the rdata length is larger than the rr-len allows, it is truncated. 144 * So, that it is safe to read the data length returned 145 * from this function from the rdata pointer of sldns_wirerr_get_rdata. 146 */ 147uint16_t sldns_wirerr_get_rdatalen(uint8_t* rr, size_t len, size_t dname_len); 148 149/** 150 * Get the rdata pointer of the RR. 151 * @param rr: the RR in wire format. 152 * @param len: rr length. 153 * @param dname_len: dname length to skip. 154 * @return rdata pointer 155 */ 156uint8_t* sldns_wirerr_get_rdata(uint8_t* rr, size_t len, size_t dname_len); 157 158/** 159 * Get the rdata pointer of the RR. prefixed with rdata length. 160 * @param rr: the RR in wire format. 161 * @param len: rr length. 162 * @param dname_len: dname length to skip. 163 * @return pointer to rdatalength, followed by the rdata. 164 */ 165uint8_t* sldns_wirerr_get_rdatawl(uint8_t* rr, size_t len, size_t dname_len); 166 167/** 168 * Parse result codes 169 */ 170#define LDNS_WIREPARSE_MASK 0x0fff 171#define LDNS_WIREPARSE_SHIFT 12 172#define LDNS_WIREPARSE_ERROR(e) ((e)&LDNS_WIREPARSE_MASK) 173#define LDNS_WIREPARSE_OFFSET(e) (((e)&~LDNS_WIREPARSE_MASK)>>LDNS_WIREPARSE_SHIFT) 174/* use lookuptable to get error string, sldns_wireparse_errors */ 175#define LDNS_WIREPARSE_ERR_OK 0 176#define LDNS_WIREPARSE_ERR_GENERAL 342 177#define LDNS_WIREPARSE_ERR_DOMAINNAME_OVERFLOW 343 178#define LDNS_WIREPARSE_ERR_DOMAINNAME_UNDERFLOW 344 179#define LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL 345 180#define LDNS_WIREPARSE_ERR_LABEL_OVERFLOW 346 181#define LDNS_WIREPARSE_ERR_EMPTY_LABEL 347 182#define LDNS_WIREPARSE_ERR_SYNTAX_BAD_ESCAPE 348 183#define LDNS_WIREPARSE_ERR_SYNTAX 349 184#define LDNS_WIREPARSE_ERR_SYNTAX_TTL 350 185#define LDNS_WIREPARSE_ERR_SYNTAX_TYPE 351 186#define LDNS_WIREPARSE_ERR_SYNTAX_CLASS 352 187#define LDNS_WIREPARSE_ERR_SYNTAX_RDATA 353 188#define LDNS_WIREPARSE_ERR_SYNTAX_MISSING_VALUE 354 189#define LDNS_WIREPARSE_ERR_INVALID_STR 355 190#define LDNS_WIREPARSE_ERR_SYNTAX_B64 356 191#define LDNS_WIREPARSE_ERR_SYNTAX_B32_EXT 357 192#define LDNS_WIREPARSE_ERR_SYNTAX_HEX 358 193#define LDNS_WIREPARSE_ERR_CERT_BAD_ALGORITHM 359 194#define LDNS_WIREPARSE_ERR_SYNTAX_TIME 360 195#define LDNS_WIREPARSE_ERR_SYNTAX_PERIOD 361 196#define LDNS_WIREPARSE_ERR_SYNTAX_ILNP64 362 197#define LDNS_WIREPARSE_ERR_SYNTAX_EUI48 363 198#define LDNS_WIREPARSE_ERR_SYNTAX_EUI64 364 199#define LDNS_WIREPARSE_ERR_SYNTAX_TAG 365 200#define LDNS_WIREPARSE_ERR_NOT_IMPL 366 201#define LDNS_WIREPARSE_ERR_SYNTAX_INT 367 202#define LDNS_WIREPARSE_ERR_SYNTAX_IP4 368 203#define LDNS_WIREPARSE_ERR_SYNTAX_IP6 369 204#define LDNS_WIREPARSE_ERR_SYNTAX_INTEGER_OVERFLOW 370 205#define LDNS_WIREPARSE_ERR_INCLUDE 371 206#define LDNS_WIREPARSE_ERR_PARENTHESIS 372 207 208/** 209 * Get reference to a constant string for the (parse) error. 210 * @param e: error return value 211 * @return string. 212 */ 213const char* sldns_get_errorstr_parse(int e); 214 215/** 216 * wire parse state for parsing files 217 */ 218struct sldns_file_parse_state { 219 /** the origin domain name, if len!=0. uncompressed wireformat */ 220 uint8_t origin[LDNS_MAX_DOMAINLEN+1]; 221 /** length of origin domain name, in bytes. 0 if not set. */ 222 size_t origin_len; 223 /** the previous domain name, if len!=0. uncompressed wireformat*/ 224 uint8_t prev_rr[LDNS_MAX_DOMAINLEN+1]; 225 /** length of the previous domain name, in bytes. 0 if not set. */ 226 size_t prev_rr_len; 227 /** default TTL, this is used if the text does not specify a TTL, 228 * host byteorder */ 229 uint32_t default_ttl; 230 /** line number information */ 231 int lineno; 232}; 233 234/** 235 * Read one RR from zonefile with buffer for the data. 236 * @param in: file that is read from (one RR, multiple lines if it spans them). 237 * @param rr: this is malloced by the user and the result is stored here, 238 * if an RR is read. If no RR is read this is signalled with the 239 * return len set to 0 (for ORIGIN, TTL directives). 240 * @param len: on input, the length of the rr buffer. on output the rr len. 241 * Buffer size of 64k should be enough. 242 * @param dname_len: returns the length of the dname initial part of the rr. 243 * @param parse_state: pass a pointer to user-allocated struct. 244 * Contents are maintained by this function. 245 * If you pass NULL then ORIGIN and TTL directives are not honored. 246 * You can start out with a particular origin by pre-filling it. 247 * otherwise, zero the structure before passing it. 248 * lineno is incremented when a newline is passed by the parser, 249 * you should initialize it at 1 at the start of the file. 250 * @return 0 on success, error on failure. 251 */ 252int sldns_fp2wire_rr_buf(FILE* in, uint8_t* rr, size_t* len, size_t* dname_len, 253 struct sldns_file_parse_state* parse_state); 254 255/** 256 * Convert one rdf in rdata to wireformat and parse from string. 257 * @param str: the text to convert for this rdata element. 258 * @param rd: rdata buffer for the wireformat. 259 * @param len: length of rd buffer on input, used length on output. 260 * @param rdftype: the type of the rdf. 261 * @return 0 on success, error on failure. 262 */ 263int sldns_str2wire_rdf_buf(const char* str, uint8_t* rd, size_t* len, 264 sldns_rdf_type rdftype); 265 266/** 267 * Convert rdf of type LDNS_RDF_TYPE_INT8 from string to wireformat. 268 * @param str: the text to convert for this rdata element. 269 * @param rd: rdata buffer for the wireformat. 270 * @param len: length of rd buffer on input, used length on output. 271 * @return 0 on success, error on failure. 272 */ 273int sldns_str2wire_int8_buf(const char* str, uint8_t* rd, size_t* len); 274 275/** 276 * Convert rdf of type LDNS_RDF_TYPE_INT16 from string to wireformat. 277 * @param str: the text to convert for this rdata element. 278 * @param rd: rdata buffer for the wireformat. 279 * @param len: length of rd buffer on input, used length on output. 280 * @return 0 on success, error on failure. 281 */ 282int sldns_str2wire_int16_buf(const char* str, uint8_t* rd, size_t* len); 283 284/** 285 * Convert rdf of type LDNS_RDF_TYPE_INT32 from string to wireformat. 286 * @param str: the text to convert for this rdata element. 287 * @param rd: rdata buffer for the wireformat. 288 * @param len: length of rd buffer on input, used length on output. 289 * @return 0 on success, error on failure. 290 */ 291int sldns_str2wire_int32_buf(const char* str, uint8_t* rd, size_t* len); 292 293/** 294 * Convert rdf of type LDNS_RDF_TYPE_A from string to wireformat. 295 * @param str: the text to convert for this rdata element. 296 * @param rd: rdata buffer for the wireformat. 297 * @param len: length of rd buffer on input, used length on output. 298 * @return 0 on success, error on failure. 299 */ 300int sldns_str2wire_a_buf(const char* str, uint8_t* rd, size_t* len); 301 302/** 303 * Convert rdf of type LDNS_RDF_TYPE_AAAA from string to wireformat. 304 * @param str: the text to convert for this rdata element. 305 * @param rd: rdata buffer for the wireformat. 306 * @param len: length of rd buffer on input, used length on output. 307 * @return 0 on success, error on failure. 308 */ 309int sldns_str2wire_aaaa_buf(const char* str, uint8_t* rd, size_t* len); 310 311/** 312 * Convert rdf of type LDNS_RDF_TYPE_STR from string to wireformat. 313 * @param str: the text to convert for this rdata element. 314 * @param rd: rdata buffer for the wireformat. 315 * @param len: length of rd buffer on input, used length on output. 316 * @return 0 on success, error on failure. 317 */ 318int sldns_str2wire_str_buf(const char* str, uint8_t* rd, size_t* len); 319 320/** 321 * Convert rdf of type LDNS_RDF_TYPE_APL from string to wireformat. 322 * @param str: the text to convert for this rdata element. 323 * @param rd: rdata buffer for the wireformat. 324 * @param len: length of rd buffer on input, used length on output. 325 * @return 0 on success, error on failure. 326 */ 327int sldns_str2wire_apl_buf(const char* str, uint8_t* rd, size_t* len); 328 329/** 330 * Convert rdf of type LDNS_RDF_TYPE_B64 from string to wireformat. 331 * @param str: the text to convert for this rdata element. 332 * @param rd: rdata buffer for the wireformat. 333 * @param len: length of rd buffer on input, used length on output. 334 * @return 0 on success, error on failure. 335 */ 336int sldns_str2wire_b64_buf(const char* str, uint8_t* rd, size_t* len); 337 338/** 339 * Convert rdf of type LDNS_RDF_TYPE_B32_EXT from string to wireformat. 340 * And also LDNS_RDF_TYPE_NSEC3_NEXT_OWNER. 341 * @param str: the text to convert for this rdata element. 342 * @param rd: rdata buffer for the wireformat. 343 * @param len: length of rd buffer on input, used length on output. 344 * @return 0 on success, error on failure. 345 */ 346int sldns_str2wire_b32_ext_buf(const char* str, uint8_t* rd, size_t* len); 347 348/** 349 * Convert rdf of type LDNS_RDF_TYPE_HEX from string to wireformat. 350 * @param str: the text to convert for this rdata element. 351 * @param rd: rdata buffer for the wireformat. 352 * @param len: length of rd buffer on input, used length on output. 353 * @return 0 on success, error on failure. 354 */ 355int sldns_str2wire_hex_buf(const char* str, uint8_t* rd, size_t* len); 356 357/** 358 * Convert rdf of type LDNS_RDF_TYPE_NSEC from string to wireformat. 359 * @param str: the text to convert for this rdata element. 360 * @param rd: rdata buffer for the wireformat. 361 * @param len: length of rd buffer on input, used length on output. 362 * @return 0 on success, error on failure. 363 */ 364int sldns_str2wire_nsec_buf(const char* str, uint8_t* rd, size_t* len); 365 366/** 367 * Convert rdf of type LDNS_RDF_TYPE_TYPE from string to wireformat. 368 * @param str: the text to convert for this rdata element. 369 * @param rd: rdata buffer for the wireformat. 370 * @param len: length of rd buffer on input, used length on output. 371 * @return 0 on success, error on failure. 372 */ 373int sldns_str2wire_type_buf(const char* str, uint8_t* rd, size_t* len); 374 375/** 376 * Convert rdf of type LDNS_RDF_TYPE_CLASS from string to wireformat. 377 * @param str: the text to convert for this rdata element. 378 * @param rd: rdata buffer for the wireformat. 379 * @param len: length of rd buffer on input, used length on output. 380 * @return 0 on success, error on failure. 381 */ 382int sldns_str2wire_class_buf(const char* str, uint8_t* rd, size_t* len); 383 384/** 385 * Convert rdf of type LDNS_RDF_TYPE_CERT_ALG from string to wireformat. 386 * @param str: the text to convert for this rdata element. 387 * @param rd: rdata buffer for the wireformat. 388 * @param len: length of rd buffer on input, used length on output. 389 * @return 0 on success, error on failure. 390 */ 391int sldns_str2wire_cert_alg_buf(const char* str, uint8_t* rd, size_t* len); 392 393/** 394 * Convert rdf of type LDNS_RDF_TYPE_ALG from string to wireformat. 395 * @param str: the text to convert for this rdata element. 396 * @param rd: rdata buffer for the wireformat. 397 * @param len: length of rd buffer on input, used length on output. 398 * @return 0 on success, error on failure. 399 */ 400int sldns_str2wire_alg_buf(const char* str, uint8_t* rd, size_t* len); 401 402/** 403 * Convert rdf of type LDNS_RDF_TYPE_TIME from string to wireformat. 404 * @param str: the text to convert for this rdata element. 405 * @param rd: rdata buffer for the wireformat. 406 * @param len: length of rd buffer on input, used length on output. 407 * @return 0 on success, error on failure. 408 */ 409int sldns_str2wire_time_buf(const char* str, uint8_t* rd, size_t* len); 410 411/** 412 * Convert rdf of type LDNS_RDF_TYPE_PERIOD from string to wireformat. 413 * @param str: the text to convert for this rdata element. 414 * @param rd: rdata buffer for the wireformat. 415 * @param len: length of rd buffer on input, used length on output. 416 * @return 0 on success, error on failure. 417 */ 418int sldns_str2wire_period_buf(const char* str, uint8_t* rd, size_t* len); 419 420/** 421 * Convert rdf of type LDNS_RDF_TYPE_LOC from string to wireformat. 422 * @param str: the text to convert for this rdata element. 423 * @param rd: rdata buffer for the wireformat. 424 * @param len: length of rd buffer on input, used length on output. 425 * @return 0 on success, error on failure. 426 */ 427int sldns_str2wire_loc_buf(const char* str, uint8_t* rd, size_t* len); 428 429/** 430 * Convert rdf of type LDNS_RDF_TYPE_WKS from string to wireformat. 431 * @param str: the text to convert for this rdata element. 432 * @param rd: rdata buffer for the wireformat. 433 * @param len: length of rd buffer on input, used length on output. 434 * @return 0 on success, error on failure. 435 */ 436int sldns_str2wire_wks_buf(const char* str, uint8_t* rd, size_t* len); 437 438/** 439 * Convert rdf of type LDNS_RDF_TYPE_NSAP from string to wireformat. 440 * @param str: the text to convert for this rdata element. 441 * @param rd: rdata buffer for the wireformat. 442 * @param len: length of rd buffer on input, used length on output. 443 * @return 0 on success, error on failure. 444 */ 445int sldns_str2wire_nsap_buf(const char* str, uint8_t* rd, size_t* len); 446 447/** 448 * Convert rdf of type LDNS_RDF_TYPE_ATMA from string to wireformat. 449 * @param str: the text to convert for this rdata element. 450 * @param rd: rdata buffer for the wireformat. 451 * @param len: length of rd buffer on input, used length on output. 452 * @return 0 on success, error on failure. 453 */ 454int sldns_str2wire_atma_buf(const char* str, uint8_t* rd, size_t* len); 455 456/** 457 * Convert rdf of type LDNS_RDF_TYPE_IPSECKEY from string to wireformat. 458 * @param str: the text to convert for this rdata element. 459 * @param rd: rdata buffer for the wireformat. 460 * @param len: length of rd buffer on input, used length on output. 461 * @return 0 on success, error on failure. 462 */ 463int sldns_str2wire_ipseckey_buf(const char* str, uint8_t* rd, size_t* len); 464 465/** 466 * Convert rdf of type LDNS_RDF_TYPE_NSEC3_SALT from string to wireformat. 467 * @param str: the text to convert for this rdata element. 468 * @param rd: rdata buffer for the wireformat. 469 * @param len: length of rd buffer on input, used length on output. 470 * @return 0 on success, error on failure. 471 */ 472int sldns_str2wire_nsec3_salt_buf(const char* str, uint8_t* rd, size_t* len); 473 474/** 475 * Convert rdf of type LDNS_RDF_TYPE_ILNP64 from string to wireformat. 476 * @param str: the text to convert for this rdata element. 477 * @param rd: rdata buffer for the wireformat. 478 * @param len: length of rd buffer on input, used length on output. 479 * @return 0 on success, error on failure. 480 */ 481int sldns_str2wire_ilnp64_buf(const char* str, uint8_t* rd, size_t* len); 482 483/** 484 * Convert rdf of type LDNS_RDF_TYPE_EUI48 from string to wireformat. 485 * @param str: the text to convert for this rdata element. 486 * @param rd: rdata buffer for the wireformat. 487 * @param len: length of rd buffer on input, used length on output. 488 * @return 0 on success, error on failure. 489 */ 490int sldns_str2wire_eui48_buf(const char* str, uint8_t* rd, size_t* len); 491 492/** 493 * Convert rdf of type LDNS_RDF_TYPE_EUI64 from string to wireformat. 494 * @param str: the text to convert for this rdata element. 495 * @param rd: rdata buffer for the wireformat. 496 * @param len: length of rd buffer on input, used length on output. 497 * @return 0 on success, error on failure. 498 */ 499int sldns_str2wire_eui64_buf(const char* str, uint8_t* rd, size_t* len); 500 501/** 502 * Convert rdf of type LDNS_RDF_TYPE_TAG from string to wireformat. 503 * @param str: the text to convert for this rdata element. 504 * @param rd: rdata buffer for the wireformat. 505 * @param len: length of rd buffer on input, used length on output. 506 * @return 0 on success, error on failure. 507 */ 508int sldns_str2wire_tag_buf(const char* str, uint8_t* rd, size_t* len); 509 510/** 511 * Convert rdf of type LDNS_RDF_TYPE_LONG_STR from string to wireformat. 512 * @param str: the text to convert for this rdata element. 513 * @param rd: rdata buffer for the wireformat. 514 * @param len: length of rd buffer on input, used length on output. 515 * @return 0 on success, error on failure. 516 */ 517int sldns_str2wire_long_str_buf(const char* str, uint8_t* rd, size_t* len); 518 519/** 520 * Convert rdf of type LDNS_RDF_TYPE_HIP from string to wireformat. 521 * @param str: the text to convert for this rdata element. 522 * @param rd: rdata buffer for the wireformat. 523 * @param len: length of rd buffer on input, used length on output. 524 * @return 0 on success, error on failure. 525 */ 526int sldns_str2wire_hip_buf(const char* str, uint8_t* rd, size_t* len); 527 528/** 529 * Convert rdf of type LDNS_RDF_TYPE_INT16_DATA from string to wireformat. 530 * @param str: the text to convert for this rdata element. 531 * @param rd: rdata buffer for the wireformat. 532 * @param len: length of rd buffer on input, used length on output. 533 * @return 0 on success, error on failure. 534 */ 535int sldns_str2wire_int16_data_buf(const char* str, uint8_t* rd, size_t* len); 536 537#ifdef __cplusplus 538} 539#endif 540 541#endif /* LDNS_STR2WIRE_H */ 542