contrib/unbound/ldns/str2wire.c

   1 /**
   2  * str2wire.c - 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 #include "config.h"
  15 #include "ldns/str2wire.h"
  16 #include "ldns/wire2str.h"
  17 #include "ldns/sbuffer.h"
  18 #include "ldns/parse.h"
  19 #include "ldns/parseutil.h"
  20 #include <ctype.h>
  21 #ifdef HAVE_TIME_H
  22 #include <time.h>
  23 #endif
  24 #ifdef HAVE_NETDB_H
  25 #include <netdb.h>
  26 #endif
  27
  28 /** return an error */
  29 #define RET_ERR(e, off) ((int)((e)|((off)<<LDNS_WIREPARSE_SHIFT)))
  30 /** Move parse error but keep its ID */
  31 #define RET_ERR_SHIFT(e, move) RET_ERR(LDNS_WIREPARSE_ERROR(e), LDNS_WIREPARSE_OFFSET(e)+(move));
  32 #define LDNS_IP6ADDRLEN      (128/8)
  33
  34 /*
  35  * No special care is taken, all dots are translated into
  36  * label separators.
  37  * @param rel: true if the domain is not absolute (not terminated in .).
  38  *      The output is then still terminated with a '0' rootlabel.
  39  */
  40 static int sldns_str2wire_dname_buf_rel(const char* str, uint8_t* buf,
  41         size_t* olen, int* rel)
  42 {
  43         size_t len;
  44
  45         const char *s;
  46         uint8_t *q, *pq, label_len;
  47
  48         if(rel) *rel = 0;
  49         len = strlen((char*)str);
  50         /* octet representation can make strings a lot longer than actual length */
  51         if (len > LDNS_MAX_DOMAINLEN * 4) {
  52                 return RET_ERR(LDNS_WIREPARSE_ERR_DOMAINNAME_OVERFLOW, 0);
  53         }
  54         if (0 == len) {
  55                 return RET_ERR(LDNS_WIREPARSE_ERR_DOMAINNAME_UNDERFLOW, 0);
  56         }
  57
  58         /* root label */
  59         if (1 == len && *str == '.') {
  60                 if(*olen < 1)
  61                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL, 0);
  62                 buf[0] = 0;
  63                 *olen = 1;
  64                 return LDNS_WIREPARSE_ERR_OK;
  65         }
  66
  67         /* get on with the rest */
  68
  69         /* s is on the current character in the string
  70          * pq points to where the labellength is going to go
  71          * label_len keeps track of the current label's length
  72          * q builds the dname inside the buf array
  73          */
  74         len = 0;
  75         if(*olen < 1)
  76                 return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL, 0);
  77         q = buf+1;
  78         pq = buf;
  79         label_len = 0;
  80         for (s = str; *s; s++, q++) {
  81                 if (q >= buf + *olen)
  82                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL, q-buf);
  83                 if (q > buf + LDNS_MAX_DOMAINLEN)
  84                         return RET_ERR(LDNS_WIREPARSE_ERR_DOMAINNAME_OVERFLOW, q-buf);
  85                 switch (*s) {
  86                 case '.':
  87                         if (label_len > LDNS_MAX_LABELLEN) {
  88                                 return RET_ERR(LDNS_WIREPARSE_ERR_LABEL_OVERFLOW, q-buf);
  89                         }
  90                         if (label_len == 0) {
  91                                 return RET_ERR(LDNS_WIREPARSE_ERR_EMPTY_LABEL, q-buf);
  92                         }
  93                         len += label_len + 1;
  94                         *q = 0;
  95                         *pq = label_len;
  96                         label_len = 0;
  97                         pq = q;
  98                         break;
  99                 case '\\':
 100                         /* octet value or literal char */
 101                         s += 1;
 102                         if (!sldns_parse_escape(q, &s)) {
 103                                 *q = 0;
 104                                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_BAD_ESCAPE, q-buf);
 105                         }
 106                         s -= 1;
 107                         label_len++;
 108                         break;
 109                 default:
 110                         *q = (uint8_t)*s;
 111                         label_len++;
 112                 }
 113         }
 114
 115         /* add root label if last char was not '.' */
 116         if(label_len != 0) {
 117                 if(rel) *rel = 1;
 118                 if (q >= buf + *olen)
 119                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL, q-buf);
 120                 if (q > buf + LDNS_MAX_DOMAINLEN) {
 121                         return RET_ERR(LDNS_WIREPARSE_ERR_DOMAINNAME_OVERFLOW, q-buf);
 122                 }
 123                 if (label_len > LDNS_MAX_LABELLEN) {
 124                         return RET_ERR(LDNS_WIREPARSE_ERR_LABEL_OVERFLOW, q-buf);
 125                 }
 126                 if (label_len == 0) { /* label_len 0 but not . at end? */
 127                         return RET_ERR(LDNS_WIREPARSE_ERR_EMPTY_LABEL, q-buf);
 128                 }
 129                 len += label_len + 1;
 130                 *pq = label_len;
 131                 *q = 0;
 132         }
 133         len++;
 134         *olen = len;
 135
 136         return LDNS_WIREPARSE_ERR_OK;
 137 }
 138
 139 int sldns_str2wire_dname_buf(const char* str, uint8_t* buf, size_t* len)
 140 {
 141         return sldns_str2wire_dname_buf_rel(str, buf, len, NULL);
 142 }
 143
 144 int sldns_str2wire_dname_buf_origin(const char* str, uint8_t* buf, size_t* len,
 145         uint8_t* origin, size_t origin_len)
 146 {
 147         size_t dlen = *len;
 148         int rel = 0;
 149         int s = sldns_str2wire_dname_buf_rel(str, buf, &dlen, &rel);
 150         if(s) return s;
 151
 152         if(rel && origin && dlen > 0) {
 153                 if(dlen + origin_len - 1 > LDNS_MAX_DOMAINLEN)
 154                         return RET_ERR(LDNS_WIREPARSE_ERR_DOMAINNAME_OVERFLOW,
 155                                 LDNS_MAX_DOMAINLEN);
 156                 if(dlen + origin_len - 1 > *len)
 157                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
 158                                 *len);
 159                 memmove(buf+dlen-1, origin, origin_len);
 160                 *len = dlen + origin_len - 1;
 161         } else
 162                 *len = dlen;
 163         return LDNS_WIREPARSE_ERR_OK;
 164 }
 165
 166 uint8_t* sldns_str2wire_dname(const char* str, size_t* len)
 167 {
 168         uint8_t dname[LDNS_MAX_DOMAINLEN+1];
 169         *len = sizeof(dname);
 170         if(sldns_str2wire_dname_buf(str, dname, len) == 0) {
 171                 uint8_t* r = (uint8_t*)malloc(*len);
 172                 if(r) return memcpy(r, dname, *len);
 173         }
 174         *len = 0;
 175         return NULL;
 176 }
 177
 178 /** read owner name */
 179 static int
 180 rrinternal_get_owner(sldns_buffer* strbuf, uint8_t* rr, size_t* len,
 181         size_t* dname_len, uint8_t* origin, size_t origin_len, uint8_t* prev,
 182         size_t prev_len, char* token, size_t token_len)
 183 {
 184         /* split the rr in its parts -1 signals trouble */
 185         if(sldns_bget_token(strbuf, token, "\t\n ", token_len) == -1) {
 186                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX,
 187                         sldns_buffer_position(strbuf));
 188         }
 189
 190         if(strcmp(token, "@") == 0) {
 191                 uint8_t* tocopy;
 192                 if (origin) {
 193                         *dname_len = origin_len;
 194                         tocopy = origin;
 195                 } else if (prev) {
 196                         *dname_len = prev_len;
 197                         tocopy = prev;
 198                 } else {
 199                         /* default to root */
 200                         *dname_len = 1;
 201                         tocopy = (uint8_t*)"\0";
 202                 }
 203                 if(*len < *dname_len)
 204                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
 205                                 sldns_buffer_position(strbuf));
 206                 memmove(rr, tocopy, *dname_len);
 207         } else if(strlen(token) == 0) {
 208                 /* no ownername was given, try prev, if that fails
 209                  * origin, else default to root */
 210                 uint8_t* tocopy;
 211                 if(prev) {
 212                         *dname_len = prev_len;
 213                         tocopy = prev;
 214                 } else if(origin) {
 215                         *dname_len = origin_len;
 216                         tocopy = origin;
 217                 } else {
 218                         *dname_len = 1;
 219                         tocopy = (uint8_t*)"\0";
 220                 }
 221                 if(*len < *dname_len)
 222                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
 223                                 sldns_buffer_position(strbuf));
 224                 memmove(rr, tocopy, *dname_len);
 225         } else {
 226                 size_t dlen = *len;
 227                 int s = sldns_str2wire_dname_buf_origin(token, rr, &dlen,
 228                         origin, origin_len);
 229                 if(s) return RET_ERR_SHIFT(s,
 230                         sldns_buffer_position(strbuf)-strlen(token));
 231                 *dname_len = dlen;
 232         }
 233         return LDNS_WIREPARSE_ERR_OK;
 234 }
 235
 236 /** read ttl */
 237 static int
 238 rrinternal_get_ttl(sldns_buffer* strbuf, char* token, size_t token_len,
 239         int* not_there, uint32_t* ttl, uint32_t default_ttl)
 240 {
 241         const char* endptr;
 242         if(sldns_bget_token(strbuf, token, "\t\n ", token_len) == -1) {
 243                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TTL,
 244                         sldns_buffer_position(strbuf));
 245         }
 246         *ttl = (uint32_t) sldns_str2period(token, &endptr);
 247
 248         if (strlen(token) > 0 && !isdigit((unsigned char)token[0])) {
 249                 *not_there = 1;
 250                 /* ah, it's not there or something */
 251                 if (default_ttl == 0) {
 252                         *ttl = LDNS_DEFAULT_TTL;
 253                 } else {
 254                         *ttl = default_ttl;
 255                 }
 256         }
 257         return LDNS_WIREPARSE_ERR_OK;
 258 }
 259
 260 /** read class */
 261 static int
 262 rrinternal_get_class(sldns_buffer* strbuf, char* token, size_t token_len,
 263         int* not_there, uint16_t* cl)
 264 {
 265         /* if 'not_there' then we got token from previous parse routine */
 266         if(!*not_there) {
 267                 /* parse new token for class */
 268                 if(sldns_bget_token(strbuf, token, "\t\n ", token_len) == -1) {
 269                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_CLASS,
 270                                 sldns_buffer_position(strbuf));
 271                 }
 272         } else *not_there = 0;
 273         *cl = sldns_get_rr_class_by_name(token);
 274         /* class can be left out too, assume IN, current token must be type */
 275         if(*cl == 0 && strcmp(token, "CLASS0") != 0) {
 276                 *not_there = 1;
 277                 *cl = LDNS_RR_CLASS_IN;
 278         }
 279         return LDNS_WIREPARSE_ERR_OK;
 280 }
 281
 282 /** read type */
 283 static int
 284 rrinternal_get_type(sldns_buffer* strbuf, char* token, size_t token_len,
 285         int* not_there, uint16_t* tp)
 286 {
 287         /* if 'not_there' then we got token from previous parse routine */
 288         if(!*not_there) {
 289                 /* parse new token for type */
 290                 if(sldns_bget_token(strbuf, token, "\t\n ", token_len) == -1) {
 291                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TYPE,
 292                                 sldns_buffer_position(strbuf));
 293                 }
 294         }
 295         *tp = sldns_get_rr_type_by_name(token);
 296         if(*tp == 0 && strcmp(token, "TYPE0") != 0) {
 297                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TYPE,
 298                         sldns_buffer_position(strbuf));
 299         }
 300         return LDNS_WIREPARSE_ERR_OK;
 301 }
 302
 303 /** put type, class, ttl into rr buffer */
 304 static int
 305 rrinternal_write_typeclassttl(sldns_buffer* strbuf, uint8_t* rr, size_t len,
 306         size_t dname_len, uint16_t tp, uint16_t cl, uint32_t ttl, int question)
 307 {
 308         if(question) {
 309                 /* question is : name, type, class */
 310                 if(dname_len + 4 > len)
 311                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
 312                                 sldns_buffer_position(strbuf));
 313                 sldns_write_uint16(rr+dname_len, tp);
 314                 sldns_write_uint16(rr+dname_len+2, cl);
 315                 return LDNS_WIREPARSE_ERR_OK;
 316         }
 317
 318         /* type(2), class(2), ttl(4), rdatalen(2 (later)) = 10 */
 319         if(dname_len + 10 > len)
 320                 return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
 321                         sldns_buffer_position(strbuf));
 322         sldns_write_uint16(rr+dname_len, tp);
 323         sldns_write_uint16(rr+dname_len+2, cl);
 324         sldns_write_uint32(rr+dname_len+4, ttl);
 325         sldns_write_uint16(rr+dname_len+8, 0); /* rdatalen placeholder */
 326         return LDNS_WIREPARSE_ERR_OK;
 327 }
 328
 329 /** find delimiters for type */
 330 static const char*
 331 rrinternal_get_delims(sldns_rdf_type rdftype, uint16_t r_cnt, uint16_t r_max)
 332 {
 333         switch(rdftype) {
 334         case LDNS_RDF_TYPE_B64        :
 335         case LDNS_RDF_TYPE_HEX        : /* These rdf types may con- */
 336         case LDNS_RDF_TYPE_LOC        : /* tain whitespace, only if */
 337         case LDNS_RDF_TYPE_WKS        : /* it is the last rd field. */
 338         case LDNS_RDF_TYPE_IPSECKEY   :
 339         case LDNS_RDF_TYPE_NSEC       : if (r_cnt == r_max - 1) {
 340                                                 return "\n";
 341                                         }
 342                                         break;
 343         default                       : break;
 344         }
 345         return "\n\t ";
 346 }
 347
 348 /* Syntactic sugar for sldns_rr_new_frm_str_internal */
 349 static int
 350 sldns_rdf_type_maybe_quoted(sldns_rdf_type rdf_type)
 351 {
 352         return  rdf_type == LDNS_RDF_TYPE_STR ||
 353                 rdf_type == LDNS_RDF_TYPE_LONG_STR;
 354 }
 355
 356 /** see if rdata is quoted */
 357 static int
 358 rrinternal_get_quoted(sldns_buffer* strbuf, const char** delimiters,
 359         sldns_rdf_type rdftype)
 360 {
 361         if(sldns_rdf_type_maybe_quoted(rdftype) &&
 362                 sldns_buffer_remaining(strbuf) > 0) {
 363
 364                 /* skip spaces */
 365                 while(sldns_buffer_remaining(strbuf) > 0 &&
 366                         *(sldns_buffer_current(strbuf)) == ' ') {
 367                         sldns_buffer_skip(strbuf, 1);
 368                 }
 369
 370                 if(sldns_buffer_remaining(strbuf) > 0 &&
 371                         *(sldns_buffer_current(strbuf)) == '\"') {
 372                         *delimiters = "\"\0";
 373                         sldns_buffer_skip(strbuf, 1);
 374                         return 1;
 375                 }
 376         }
 377         return 0;
 378 }
 379
 380 /** spool hex data into rdata */
 381 static int
 382 rrinternal_spool_hex(char* token, uint8_t* rr, size_t rr_len,
 383         size_t rr_cur_len, size_t* cur_hex_data_size, size_t hex_data_size)
 384 {
 385         char* p = token;
 386         while(*p) {
 387                 if(isspace((unsigned char)*p)) {
 388                         p++;
 389                         continue;
 390                 }
 391                 if(!isxdigit((unsigned char)*p))
 392                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_RDATA,
 393                                 p-token);
 394                 if(*cur_hex_data_size >= hex_data_size)
 395                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_RDATA,
 396                                 p-token);
 397                 /* extra robust check */
 398                 if(rr_cur_len+(*cur_hex_data_size)/2 >= rr_len)
 399                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
 400                                 p-token);
 401                 /* see if 16s or 1s */
 402                 if( ((*cur_hex_data_size)&1) == 0) {
 403                         rr[rr_cur_len+(*cur_hex_data_size)/2] =
 404                                 (uint8_t)sldns_hexdigit_to_int(*p)*16;
 405                 } else {
 406                         rr[rr_cur_len+(*cur_hex_data_size)/2] +=
 407                                 (uint8_t)sldns_hexdigit_to_int(*p);
 408                 }
 409                 p++;
 410                 (*cur_hex_data_size)++;
 411         }
 412         return LDNS_WIREPARSE_ERR_OK;
 413 }
 414
 415 /** read unknown rr type format */
 416 static int
 417 rrinternal_parse_unknown(sldns_buffer* strbuf, char* token, size_t token_len,
 418         uint8_t* rr, size_t* rr_len, size_t* rr_cur_len, size_t pre_data_pos)
 419 {
 420         const char* delim = "\n\t ";
 421         size_t hex_data_size, cur_hex_data_size;
 422         /* go back to before \#
 423          * and skip it while setting delimiters better
 424          */
 425         sldns_buffer_set_position(strbuf, pre_data_pos);
 426         if(sldns_bget_token(strbuf, token, delim, token_len) == -1)
 427                 return LDNS_WIREPARSE_ERR_GENERAL; /* should not fail */
 428         /* read rdata octet length */
 429         if(sldns_bget_token(strbuf, token, delim, token_len) == -1) {
 430                 /* something goes very wrong here */
 431                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_RDATA,
 432                         sldns_buffer_position(strbuf));
 433         }
 434         hex_data_size = (size_t)atoi(token);
 435         if(hex_data_size > LDNS_MAX_RDFLEN ||
 436                 *rr_cur_len + hex_data_size > *rr_len) {
 437                 return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
 438                         sldns_buffer_position(strbuf));
 439         }
 440         /* copy hex chars into hex str (2 chars per byte) */
 441         hex_data_size *= 2;
 442         cur_hex_data_size = 0;
 443         while(cur_hex_data_size < hex_data_size) {
 444                 int status;
 445                 ssize_t c = sldns_bget_token(strbuf, token, delim, token_len);
 446                 if((status = rrinternal_spool_hex(token, rr, *rr_len,
 447                         *rr_cur_len, &cur_hex_data_size, hex_data_size)) != 0)
 448                         return RET_ERR_SHIFT(status,
 449                                 sldns_buffer_position(strbuf)-strlen(token));
 450                 if(c == -1) {
 451                         if(cur_hex_data_size != hex_data_size)
 452                                 return RET_ERR(
 453                                         LDNS_WIREPARSE_ERR_SYNTAX_RDATA,
 454                                         sldns_buffer_position(strbuf));
 455                         break;
 456                 }
 457         }
 458         *rr_cur_len += hex_data_size/2;
 459         return LDNS_WIREPARSE_ERR_OK;
 460 }
 461
 462 /** parse normal RR rdata element */
 463 static int
 464 rrinternal_parse_rdf(sldns_buffer* strbuf, char* token, size_t token_len,
 465         uint8_t* rr, size_t rr_len, size_t* rr_cur_len, sldns_rdf_type rdftype,
 466         uint16_t rr_type, uint16_t r_cnt, uint16_t r_max, size_t dname_len,
 467         uint8_t* origin, size_t origin_len)
 468 {
 469         size_t len;
 470         int status;
 471
 472         switch(rdftype) {
 473         case LDNS_RDF_TYPE_DNAME:
 474                 /* check if the origin should be used or concatenated */
 475                 if(strcmp(token, "@") == 0) {
 476                         uint8_t* tocopy;
 477                         size_t copylen;
 478                         if(origin) {
 479                                 copylen = origin_len;
 480                                 tocopy = origin;
 481                         } else if(rr_type == LDNS_RR_TYPE_SOA) {
 482                                 copylen = dname_len;
 483                                 tocopy = rr; /* copy rr owner name */
 484                         } else {
 485                                 copylen = 1;
 486                                 tocopy = (uint8_t*)"\0";
 487                         }
 488                         if((*rr_cur_len) + copylen > rr_len)
 489                                 return RET_ERR(
 490                                         LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
 491                                         sldns_buffer_position(strbuf));
 492                         memmove(rr+*rr_cur_len, tocopy, copylen);
 493                         (*rr_cur_len) += copylen;
 494                 } else {
 495                         size_t dlen = rr_len - (*rr_cur_len);
 496                         int s = sldns_str2wire_dname_buf_origin(token,
 497                                 rr+*rr_cur_len, &dlen, origin, origin_len);
 498                         if(s) return RET_ERR_SHIFT(s,
 499                                 sldns_buffer_position(strbuf)-strlen(token));
 500                         (*rr_cur_len) += dlen;
 501                 }
 502                 return LDNS_WIREPARSE_ERR_OK;
 503
 504         case LDNS_RDF_TYPE_HEX:
 505         case LDNS_RDF_TYPE_B64:
 506                 /* When this is the last rdata field, then the
 507                  * rest should be read in (cause then these
 508                  * rdf types may contain spaces). */
 509                 if(r_cnt == r_max - 1) {
 510                         size_t tlen = strlen(token);
 511                         (void)sldns_bget_token(strbuf, token+tlen, "\n",
 512                                 token_len - tlen);
 513                 }
 514                 break;
 515         default:
 516                 break;
 517         }
 518
 519         len = rr_len - (*rr_cur_len);
 520         if((status=sldns_str2wire_rdf_buf(token, rr+(*rr_cur_len), &len,
 521                 rdftype)) != 0)
 522                 return RET_ERR_SHIFT(status,
 523                         sldns_buffer_position(strbuf)-strlen(token));
 524         *rr_cur_len += len;
 525         return LDNS_WIREPARSE_ERR_OK;
 526 }
 527
 528 /**
 529  * Parse one rdf token.  Takes care of quotes and parenthesis.
 530  */
 531 static int
 532 sldns_parse_rdf_token(sldns_buffer* strbuf, char* token, size_t token_len,
 533         int* quoted, int* parens, size_t* pre_data_pos,
 534         const char* delimiters, sldns_rdf_type rdftype, size_t* token_strlen)
 535 {
 536         size_t slen;
 537
 538         /* skip spaces */
 539         while(sldns_buffer_remaining(strbuf) > 0 && !*quoted &&
 540                 *(sldns_buffer_current(strbuf)) == ' ') {
 541                 sldns_buffer_skip(strbuf, 1);
 542         }
 543
 544         *pre_data_pos = sldns_buffer_position(strbuf);
 545         if(sldns_bget_token_par(strbuf, token, (*quoted)?"\"":delimiters,
 546                 token_len, parens, (*quoted)?NULL:" \t") == -1) {
 547                 return 0;
 548         }
 549         slen = strlen(token);
 550         /* check if not quoted yet, and we have encountered quotes */
 551         if(!*quoted && sldns_rdf_type_maybe_quoted(rdftype) &&
 552                 slen >= 2 &&
 553                 (token[0] == '"' || token[0] == '\'') &&
 554                 (token[slen-1] == '"' || token[slen-1] == '\'')) {
 555                 /* move token two smaller (quotes) with endnull */
 556                 memmove(token, token+1, slen-2);
 557                 token[slen-2] = 0;
 558                 slen -= 2;
 559                 *quoted = 1;
 560         } else if(!*quoted && sldns_rdf_type_maybe_quoted(rdftype) &&
 561                 slen >= 2 &&
 562                 (token[0] == '"' || token[0] == '\'')) {
 563                 /* got the start quote (remove it) but read remainder
 564                  * of quoted string as well into remainder of token */
 565                 memmove(token, token+1, slen-1);
 566                 token[slen-1] = 0;
 567                 slen -= 1;
 568                 *quoted = 1;
 569                 /* rewind buffer over skipped whitespace */
 570                 while(sldns_buffer_position(strbuf) > 0 &&
 571                         (sldns_buffer_current(strbuf)[-1] == ' ' ||
 572                         sldns_buffer_current(strbuf)[-1] == '\t')) {
 573                         sldns_buffer_skip(strbuf, -1);
 574                 }
 575                 if(sldns_bget_token_par(strbuf, token+slen,
 576                         "\"", token_len-slen,
 577                         parens, NULL) == -1) {
 578                         return 0;
 579                 }
 580                 slen = strlen(token);
 581         }
 582         *token_strlen = slen;
 583         return 1;
 584 }
 585
 586 /** Add space and one more rdf token onto the existing token string. */
 587 static int
 588 sldns_affix_token(sldns_buffer* strbuf, char* token, size_t* token_len,
 589         int* quoted, int* parens, size_t* pre_data_pos,
 590         const char* delimiters, sldns_rdf_type rdftype, size_t* token_strlen)
 591 {
 592         size_t addlen = *token_len - *token_strlen;
 593         size_t addstrlen = 0;
 594
 595         /* add space */
 596         if(addlen < 1) return 0;
 597         token[*token_strlen] = ' ';
 598         token[++(*token_strlen)] = 0;
 599
 600         /* read another token */
 601         addlen = *token_len - *token_strlen;
 602         if(!sldns_parse_rdf_token(strbuf, token+*token_strlen, addlen, quoted,
 603                 parens, pre_data_pos, delimiters, rdftype, &addstrlen))
 604                 return 0;
 605         (*token_strlen) += addstrlen;
 606         return 1;
 607 }
 608
 609 /** parse rdata from string into rr buffer(-remainder after dname). */
 610 static int
 611 rrinternal_parse_rdata(sldns_buffer* strbuf, char* token, size_t token_len,
 612         uint8_t* rr, size_t* rr_len, size_t dname_len, uint16_t rr_type,
 613         uint8_t* origin, size_t origin_len)
 614 {
 615         const sldns_rr_descriptor *desc = sldns_rr_descript((uint16_t)rr_type);
 616         uint16_t r_cnt, r_min, r_max;
 617         size_t rr_cur_len = dname_len + 10, pre_data_pos, token_strlen;
 618         int was_unknown_rr_format = 0, parens = 0, status, quoted;
 619         const char* delimiters;
 620         sldns_rdf_type rdftype;
 621         /* a desc is always returned */
 622         if(!desc) return LDNS_WIREPARSE_ERR_GENERAL;
 623         r_max = sldns_rr_descriptor_maximum(desc);
 624         r_min = sldns_rr_descriptor_minimum(desc);
 625         /* robust check */
 626         if(rr_cur_len > *rr_len)
 627                 return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
 628                         sldns_buffer_position(strbuf));
 629
 630         /* because number of fields can be variable, we can't rely on
 631          * _maximum() only */
 632         for(r_cnt=0; r_cnt < r_max; r_cnt++) {
 633                 rdftype = sldns_rr_descriptor_field_type(desc, r_cnt);
 634                 delimiters = rrinternal_get_delims(rdftype, r_cnt, r_max);
 635                 quoted = rrinternal_get_quoted(strbuf, &delimiters, rdftype);
 636
 637                 if(!sldns_parse_rdf_token(strbuf, token, token_len, &quoted,
 638                         &parens, &pre_data_pos, delimiters, rdftype,
 639                         &token_strlen))
 640                         break;
 641
 642                 /* rfc3597 specifies that any type can be represented
 643                  * with \# method, which can contain spaces...
 644                  * it does specify size though... */
 645
 646                 /* unknown RR data */
 647                 if(token_strlen>=2 && strncmp(token, "\\#", 2) == 0 &&
 648                         !quoted && (token_strlen == 2 || token[2]==' ')) {
 649                         was_unknown_rr_format = 1;
 650                         if((status=rrinternal_parse_unknown(strbuf, token,
 651                                 token_len, rr, rr_len, &rr_cur_len,
 652                                 pre_data_pos)) != 0)
 653                                 return status;
 654                 } else if(token_strlen > 0 || quoted) {
 655                         if(rdftype == LDNS_RDF_TYPE_HIP) {
 656                                 /* affix the HIT and PK fields, with a space */
 657                                 if(!sldns_affix_token(strbuf, token,
 658                                         &token_len, &quoted, &parens,
 659                                         &pre_data_pos, delimiters,
 660                                         rdftype, &token_strlen))
 661                                         break;
 662                                 if(!sldns_affix_token(strbuf, token,
 663                                         &token_len, &quoted, &parens,
 664                                         &pre_data_pos, delimiters,
 665                                         rdftype, &token_strlen))
 666                                         break;
 667                         }
 668
 669                         /* normal RR */
 670                         if((status=rrinternal_parse_rdf(strbuf, token,
 671                                 token_len, rr, *rr_len, &rr_cur_len, rdftype,
 672                                 rr_type, r_cnt, r_max, dname_len, origin,
 673                                 origin_len)) != 0) {
 674                                 return status;
 675                         }
 676                 }
 677         }
 678         if(!was_unknown_rr_format && r_cnt+1 < r_min) {
 679                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_MISSING_VALUE,
 680                         sldns_buffer_position(strbuf));
 681         }
 682         while(parens != 0) {
 683                 /* read remainder, must be "" */
 684                 if(sldns_bget_token_par(strbuf, token, "\n", token_len,
 685                         &parens, " \t") == -1) {
 686                         if(parens != 0)
 687                                 return RET_ERR(LDNS_WIREPARSE_ERR_PARENTHESIS,
 688                                         sldns_buffer_position(strbuf));
 689                         break;
 690                 }
 691                 if(strcmp(token, "") != 0)
 692                         return RET_ERR(LDNS_WIREPARSE_ERR_PARENTHESIS,
 693                                 sldns_buffer_position(strbuf));
 694         }
 695         /* write rdata length */
 696         sldns_write_uint16(rr+dname_len+8, rr_cur_len-dname_len-10);
 697         *rr_len = rr_cur_len;
 698         return LDNS_WIREPARSE_ERR_OK;
 699 }
 700
 701 /*
 702  * trailing spaces are allowed
 703  * leading spaces are not allowed
 704  * allow ttl to be optional
 705  * class is optional too
 706  * if ttl is missing, and default_ttl is 0, use DEF_TTL
 707  * allow ttl to be written as 1d3h
 708  * So the RR should look like. e.g.
 709  * miek.nl. 3600 IN MX 10 elektron.atoom.net
 710  * or
 711  * miek.nl. 1h IN MX 10 elektron.atoom.net
 712  * or
 713  * miek.nl. IN MX 10 elektron.atoom.net
 714  */
 715 static int
 716 sldns_str2wire_rr_buf_internal(const char* str, uint8_t* rr, size_t* len,
 717         size_t* dname_len, uint32_t default_ttl, uint8_t* origin,
 718         size_t origin_len, uint8_t* prev, size_t prev_len, int question)
 719 {
 720         int status;
 721         int not_there = 0;
 722         char token[LDNS_MAX_RDFLEN+1];
 723         uint32_t ttl = 0;
 724         uint16_t tp = 0, cl = 0;
 725         size_t ddlen = 0;
 726
 727         /* string in buffer */
 728         sldns_buffer strbuf;
 729         sldns_buffer_init_frm_data(&strbuf, (uint8_t*)str, strlen(str));
 730         if(!dname_len) dname_len = &ddlen;
 731
 732         /* parse the owner */
 733         if((status=rrinternal_get_owner(&strbuf, rr, len, dname_len, origin,
 734                 origin_len, prev, prev_len, token, sizeof(token))) != 0)
 735                 return status;
 736
 737         /* parse the [ttl] [class] <type> */
 738         if((status=rrinternal_get_ttl(&strbuf, token, sizeof(token),
 739                 &not_there, &ttl, default_ttl)) != 0)
 740                 return status;
 741         if((status=rrinternal_get_class(&strbuf, token, sizeof(token),
 742                 &not_there, &cl)) != 0)
 743                 return status;
 744         if((status=rrinternal_get_type(&strbuf, token, sizeof(token),
 745                 &not_there, &tp)) != 0)
 746                 return status;
 747         /* put ttl, class, type into the rr result */
 748         if((status=rrinternal_write_typeclassttl(&strbuf, rr, *len, *dname_len, tp, cl,
 749                 ttl, question)) != 0)
 750                 return status;
 751         /* for a question-RR we are done, no rdata */
 752         if(question) {
 753                 *len = *dname_len + 4;
 754                 return LDNS_WIREPARSE_ERR_OK;
 755         }
 756
 757         /* rdata */
 758         if((status=rrinternal_parse_rdata(&strbuf, token, sizeof(token),
 759                 rr, len, *dname_len, tp, origin, origin_len)) != 0)
 760                 return status;
 761
 762         return LDNS_WIREPARSE_ERR_OK;
 763 }
 764
 765 int sldns_str2wire_rr_buf(const char* str, uint8_t* rr, size_t* len,
 766         size_t* dname_len, uint32_t default_ttl, uint8_t* origin,
 767         size_t origin_len, uint8_t* prev, size_t prev_len)
 768 {
 769         return sldns_str2wire_rr_buf_internal(str, rr, len, dname_len,
 770                 default_ttl, origin, origin_len, prev, prev_len, 0);
 771 }
 772
 773 int sldns_str2wire_rr_question_buf(const char* str, uint8_t* rr, size_t* len,
 774         size_t* dname_len, uint8_t* origin, size_t origin_len, uint8_t* prev,
 775         size_t prev_len)
 776 {
 777         return sldns_str2wire_rr_buf_internal(str, rr, len, dname_len,
 778                 0, origin, origin_len, prev, prev_len, 1);
 779 }
 780
 781 uint16_t sldns_wirerr_get_type(uint8_t* rr, size_t len, size_t dname_len)
 782 {
 783         if(len < dname_len+2)
 784                 return 0;
 785         return sldns_read_uint16(rr+dname_len);
 786 }
 787
 788 uint16_t sldns_wirerr_get_class(uint8_t* rr, size_t len, size_t dname_len)
 789 {
 790         if(len < dname_len+4)
 791                 return 0;
 792         return sldns_read_uint16(rr+dname_len+2);
 793 }
 794
 795 uint32_t sldns_wirerr_get_ttl(uint8_t* rr, size_t len, size_t dname_len)
 796 {
 797         if(len < dname_len+8)
 798                 return 0;
 799         return sldns_read_uint32(rr+dname_len+4);
 800 }
 801
 802 uint16_t sldns_wirerr_get_rdatalen(uint8_t* rr, size_t len, size_t dname_len)
 803 {
 804         if(len < dname_len+10)
 805                 return 0;
 806         return sldns_read_uint16(rr+dname_len+8);
 807 }
 808
 809 uint8_t* sldns_wirerr_get_rdata(uint8_t* rr, size_t len, size_t dname_len)
 810 {
 811         if(len < dname_len+10)
 812                 return NULL;
 813         return rr+dname_len+10;
 814 }
 815
 816 uint8_t* sldns_wirerr_get_rdatawl(uint8_t* rr, size_t len, size_t dname_len)
 817 {
 818         if(len < dname_len+10)
 819                 return NULL;
 820         return rr+dname_len+8;
 821 }
 822
 823 const char* sldns_get_errorstr_parse(int e)
 824 {
 825         sldns_lookup_table *lt;
 826         lt = sldns_lookup_by_id(sldns_wireparse_errors, LDNS_WIREPARSE_ERROR(e));
 827         return lt?lt->name:"unknown error";
 828 }
 829
 830 /* Strip whitespace from the start and the end of <line>.  */
 831 static char *
 832 sldns_strip_ws(char *line)
 833 {
 834         char *s = line, *e;
 835
 836         for (s = line; *s && isspace((unsigned char)*s); s++)
 837                 ;
 838         for (e = strchr(s, 0); e > s+2 && isspace((unsigned char)e[-1]) && e[-2] != '\\'; e--)
 839                 ;
 840         *e = 0;
 841         return s;
 842 }
 843
 844 int sldns_fp2wire_rr_buf(FILE* in, uint8_t* rr, size_t* len, size_t* dname_len,
 845         struct sldns_file_parse_state* parse_state)
 846 {
 847         char line[LDNS_RR_BUF_SIZE+1];
 848         ssize_t size;
 849
 850         /* read an entire line in from the file */
 851         if((size = sldns_fget_token_l(in, line, LDNS_PARSE_SKIP_SPACE,
 852                 LDNS_RR_BUF_SIZE, parse_state?&parse_state->lineno:NULL))
 853                 == -1) {
 854                 /* if last line was empty, we are now at feof, which is not
 855                  * always a parse error (happens when for instance last line
 856                  * was a comment)
 857                  */
 858                 return LDNS_WIREPARSE_ERR_SYNTAX;
 859         }
 860
 861         /* we can have the situation, where we've read ok, but still got
 862          * no bytes to play with, in this case size is 0 */
 863         if(size == 0) {
 864                 *len = 0;
 865                 *dname_len = 0;
 866                 return LDNS_WIREPARSE_ERR_OK;
 867         }
 868
 869         if(strncmp(line, "$ORIGIN", 7) == 0 && isspace((unsigned char)line[7])) {
 870                 int s;
 871                 *len = 0;
 872                 *dname_len = 0;
 873                 if(!parse_state) return LDNS_WIREPARSE_ERR_OK;
 874                 parse_state->origin_len = sizeof(parse_state->origin);
 875                 s = sldns_str2wire_dname_buf(sldns_strip_ws(line+8),
 876                         parse_state->origin, &parse_state->origin_len);
 877                 if(s) parse_state->origin_len = 0;
 878                 return s;
 879         } else if(strncmp(line, "$TTL", 4) == 0 && isspace((unsigned char)line[4])) {
 880                 const char* end = NULL;
 881                 *len = 0;
 882                 *dname_len = 0;
 883                 if(!parse_state) return LDNS_WIREPARSE_ERR_OK;
 884                 parse_state->default_ttl = sldns_str2period(
 885                         sldns_strip_ws(line+5), &end);
 886         } else if (strncmp(line, "$INCLUDE", 8) == 0) {
 887                 *len = 0;
 888                 *dname_len = 0;
 889                 return LDNS_WIREPARSE_ERR_INCLUDE;
 890         } else {
 891                 return sldns_str2wire_rr_buf(line, rr, len, dname_len,
 892                         parse_state?parse_state->default_ttl:0,
 893                         (parse_state&&parse_state->origin_len)?
 894                                 parse_state->origin:NULL,
 895                         parse_state->origin_len,
 896                         (parse_state&&parse_state->prev_rr_len)?
 897                                 parse_state->prev_rr:NULL,
 898                         parse_state->prev_rr_len);
 899         }
 900         return LDNS_WIREPARSE_ERR_OK;
 901 }
 902
 903 int sldns_str2wire_rdf_buf(const char* str, uint8_t* rd, size_t* len,
 904         sldns_rdf_type rdftype)
 905 {
 906         switch (rdftype) {
 907         case LDNS_RDF_TYPE_DNAME:
 908                 return sldns_str2wire_dname_buf(str, rd, len);
 909         case LDNS_RDF_TYPE_INT8:
 910                 return sldns_str2wire_int8_buf(str, rd, len);
 911         case LDNS_RDF_TYPE_INT16:
 912                 return sldns_str2wire_int16_buf(str, rd, len);
 913         case LDNS_RDF_TYPE_INT32:
 914                 return sldns_str2wire_int32_buf(str, rd, len);
 915         case LDNS_RDF_TYPE_A:
 916                 return sldns_str2wire_a_buf(str, rd, len);
 917         case LDNS_RDF_TYPE_AAAA:
 918                 return sldns_str2wire_aaaa_buf(str, rd, len);
 919         case LDNS_RDF_TYPE_STR:
 920                 return sldns_str2wire_str_buf(str, rd, len);
 921         case LDNS_RDF_TYPE_APL:
 922                 return sldns_str2wire_apl_buf(str, rd, len);
 923         case LDNS_RDF_TYPE_B64:
 924                 return sldns_str2wire_b64_buf(str, rd, len);
 925         case LDNS_RDF_TYPE_B32_EXT:
 926                 return sldns_str2wire_b32_ext_buf(str, rd, len);
 927         case LDNS_RDF_TYPE_HEX:
 928                 return sldns_str2wire_hex_buf(str, rd, len);
 929         case LDNS_RDF_TYPE_NSEC:
 930                 return sldns_str2wire_nsec_buf(str, rd, len);
 931         case LDNS_RDF_TYPE_TYPE:
 932                 return sldns_str2wire_type_buf(str, rd, len);
 933         case LDNS_RDF_TYPE_CLASS:
 934                 return sldns_str2wire_class_buf(str, rd, len);
 935         case LDNS_RDF_TYPE_CERT_ALG:
 936                 return sldns_str2wire_cert_alg_buf(str, rd, len);
 937         case LDNS_RDF_TYPE_ALG:
 938                 return sldns_str2wire_alg_buf(str, rd, len);
 939         case LDNS_RDF_TYPE_TIME:
 940                 return sldns_str2wire_time_buf(str, rd, len);
 941         case LDNS_RDF_TYPE_PERIOD:
 942                 return sldns_str2wire_period_buf(str, rd, len);
 943         case LDNS_RDF_TYPE_LOC:
 944                 return sldns_str2wire_loc_buf(str, rd, len);
 945         case LDNS_RDF_TYPE_WKS:
 946                 return sldns_str2wire_wks_buf(str, rd, len);
 947         case LDNS_RDF_TYPE_NSAP:
 948                 return sldns_str2wire_nsap_buf(str, rd, len);
 949         case LDNS_RDF_TYPE_ATMA:
 950                 return sldns_str2wire_atma_buf(str, rd, len);
 951         case LDNS_RDF_TYPE_IPSECKEY:
 952                 return sldns_str2wire_ipseckey_buf(str, rd, len);
 953         case LDNS_RDF_TYPE_NSEC3_SALT:
 954                 return sldns_str2wire_nsec3_salt_buf(str, rd, len);
 955         case LDNS_RDF_TYPE_NSEC3_NEXT_OWNER:
 956                 return sldns_str2wire_b32_ext_buf(str, rd, len);
 957         case LDNS_RDF_TYPE_ILNP64:
 958                 return sldns_str2wire_ilnp64_buf(str, rd, len);
 959         case LDNS_RDF_TYPE_EUI48:
 960                 return sldns_str2wire_eui48_buf(str, rd, len);
 961         case LDNS_RDF_TYPE_EUI64:
 962                 return sldns_str2wire_eui64_buf(str, rd, len);
 963         case LDNS_RDF_TYPE_TAG:
 964                 return sldns_str2wire_tag_buf(str, rd, len);
 965         case LDNS_RDF_TYPE_LONG_STR:
 966                 return sldns_str2wire_long_str_buf(str, rd, len);
 967         case LDNS_RDF_TYPE_HIP:
 968                 return sldns_str2wire_hip_buf(str, rd, len);
 969         case LDNS_RDF_TYPE_INT16_DATA:
 970                 return sldns_str2wire_int16_data_buf(str, rd, len);
 971         case LDNS_RDF_TYPE_UNKNOWN:
 972         case LDNS_RDF_TYPE_SERVICE:
 973                 return LDNS_WIREPARSE_ERR_NOT_IMPL;
 974         case LDNS_RDF_TYPE_NONE:
 975         default:
 976                 break;
 977         }
 978         return LDNS_WIREPARSE_ERR_GENERAL;
 979 }
 980
 981 int sldns_str2wire_int8_buf(const char* str, uint8_t* rd, size_t* len)
 982 {
 983         char* end;
 984         uint8_t r = (uint8_t)strtol((char*)str, &end, 10);
 985         if(*end != 0)
 986                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_INT, end-(char*)str);
 987         if(*len < 1)
 988                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
 989         rd[0] = r;
 990         *len = 1;
 991         return LDNS_WIREPARSE_ERR_OK;
 992 }
 993
 994 int sldns_str2wire_int16_buf(const char* str, uint8_t* rd, size_t* len)
 995 {
 996         char* end;
 997         uint16_t r = (uint16_t)strtol((char*)str, &end, 10);
 998         if(*end != 0)
 999                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_INT, end-(char*)str);
1000         if(*len < 2)
1001                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1002         sldns_write_uint16(rd, r);
1003         *len = 2;
1004         return LDNS_WIREPARSE_ERR_OK;
1005 }
1006
1007 int sldns_str2wire_int32_buf(const char* str, uint8_t* rd, size_t* len)
1008 {
1009         char* end;
1010         uint32_t r;
1011         errno = 0; /* must set to zero before call,
1012                         note race condition on errno */
1013         if(*str == '-')
1014                 r = (uint32_t)strtol((char*)str, &end, 10);
1015         else    r = (uint32_t)strtoul((char*)str, &end, 10);
1016         if(*end != 0)
1017                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_INT, end-(char*)str);
1018         if(errno == ERANGE)
1019                 return LDNS_WIREPARSE_ERR_SYNTAX_INTEGER_OVERFLOW;
1020         if(*len < 4)
1021                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1022         sldns_write_uint32(rd, r);
1023         *len = 4;
1024         return LDNS_WIREPARSE_ERR_OK;
1025 }
1026
1027 int sldns_str2wire_a_buf(const char* str, uint8_t* rd, size_t* len)
1028 {
1029         struct in_addr address;
1030         if(inet_pton(AF_INET, (char*)str, &address) != 1)
1031                 return LDNS_WIREPARSE_ERR_SYNTAX_IP4;
1032         if(*len < sizeof(address))
1033                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1034         memmove(rd, &address, sizeof(address));
1035         *len = sizeof(address);
1036         return LDNS_WIREPARSE_ERR_OK;
1037 }
1038
1039 int sldns_str2wire_aaaa_buf(const char* str, uint8_t* rd, size_t* len)
1040 {
1041 #ifdef AF_INET6
1042         uint8_t address[LDNS_IP6ADDRLEN + 1];
1043         if(inet_pton(AF_INET6, (char*)str, address) != 1)
1044                 return LDNS_WIREPARSE_ERR_SYNTAX_IP6;
1045         if(*len < LDNS_IP6ADDRLEN)
1046                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1047         memmove(rd, address, LDNS_IP6ADDRLEN);
1048         *len = LDNS_IP6ADDRLEN;
1049         return LDNS_WIREPARSE_ERR_OK;
1050 #else
1051         return LDNS_WIREPARSE_ERR_NOT_IMPL;
1052 #endif
1053 }
1054
1055 int sldns_str2wire_str_buf(const char* str, uint8_t* rd, size_t* len)
1056 {
1057         uint8_t ch = 0;
1058         size_t sl = 0;
1059         const char* s = str;
1060         /* skip length byte */
1061         if(*len < 1)
1062                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1063
1064         /* read characters */
1065         while(sldns_parse_char(&ch, &s)) {
1066                 if(sl >= 255)
1067                         return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR, s-str);
1068                 if(*len < sl+1)
1069                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1070                                 s-str);
1071                 rd[++sl] = ch;
1072         }
1073         if(!s)
1074                 return LDNS_WIREPARSE_ERR_SYNTAX_BAD_ESCAPE;
1075         rd[0] = (uint8_t)sl;
1076         *len = sl+1;
1077         return LDNS_WIREPARSE_ERR_OK;
1078 }
1079
1080 int sldns_str2wire_apl_buf(const char* str, uint8_t* rd, size_t* len)
1081 {
1082         const char *my_str = str;
1083
1084         char my_ip_str[64];
1085         size_t ip_str_len;
1086
1087         uint16_t family;
1088         int negation;
1089         size_t adflength = 0;
1090         uint8_t data[16+4];
1091         uint8_t prefix;
1092         size_t i;
1093
1094         if(strlen(my_str) == 0) {
1095                 /* empty APL element, no data, no string */
1096                 *len = 0;
1097                 return LDNS_WIREPARSE_ERR_OK;
1098         }
1099
1100         /* [!]afi:address/prefix */
1101         if (strlen(my_str) < 2
1102                         || strchr(my_str, ':') == NULL
1103                         || strchr(my_str, '/') == NULL
1104                         || strchr(my_str, ':') > strchr(my_str, '/')) {
1105                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1106         }
1107
1108         if (my_str[0] == '!') {
1109                 negation = 1;
1110                 my_str += 1;
1111         } else {
1112                 negation = 0;
1113         }
1114
1115         family = (uint16_t) atoi(my_str);
1116
1117         my_str = strchr(my_str, ':') + 1;
1118
1119         /* need ip addr and only ip addr for inet_pton */
1120         ip_str_len = (size_t) (strchr(my_str, '/') - my_str);
1121         if(ip_str_len+1 > sizeof(my_ip_str))
1122                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1123         (void)strlcpy(my_ip_str, my_str, sizeof(my_ip_str));
1124         my_ip_str[ip_str_len] = 0;
1125
1126         if (family == 1) {
1127                 /* ipv4 */
1128                 if(inet_pton(AF_INET, my_ip_str, data+4) == 0)
1129                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1130                 for (i = 0; i < 4; i++) {
1131                         if (data[i+4] != 0) {
1132                                 adflength = i + 1;
1133                         }
1134                 }
1135         } else if (family == 2) {
1136                 /* ipv6 */
1137                 if (inet_pton(AF_INET6, my_ip_str, data+4) == 0)
1138                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1139                 for (i = 0; i < 16; i++) {
1140                         if (data[i+4] != 0) {
1141                                 adflength = i + 1;
1142                         }
1143                 }
1144         } else {
1145                 /* unknown family */
1146                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1147         }
1148
1149         my_str = strchr(my_str, '/') + 1;
1150         prefix = (uint8_t) atoi(my_str);
1151
1152         sldns_write_uint16(data, family);
1153         data[2] = prefix;
1154         data[3] = (uint8_t)adflength;
1155         if (negation) {
1156                 /* set bit 1 of byte 3 */
1157                 data[3] = data[3] | 0x80;
1158         }
1159
1160         if(*len < 4+adflength)
1161                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1162         memmove(rd, data, 4+adflength);
1163         *len = 4+adflength;
1164         return LDNS_WIREPARSE_ERR_OK;
1165 }
1166
1167 int sldns_str2wire_b64_buf(const char* str, uint8_t* rd, size_t* len)
1168 {
1169         size_t sz = sldns_b64_pton_calculate_size(strlen(str));
1170         int n;
1171         if(*len < sz)
1172                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1173         n = sldns_b64_pton(str, rd, *len);
1174         if(n < 0)
1175                 return LDNS_WIREPARSE_ERR_SYNTAX_B64;
1176         *len = (size_t)n;
1177         return LDNS_WIREPARSE_ERR_OK;
1178 }
1179
1180 int sldns_str2wire_b32_ext_buf(const char* str, uint8_t* rd, size_t* len)
1181 {
1182         size_t slen = strlen(str);
1183         size_t sz = sldns_b32_pton_calculate_size(slen);
1184         int n;
1185         if(*len < 1+sz)
1186                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1187         rd[0] = (uint8_t)sz;
1188         n = sldns_b32_pton_extended_hex(str, slen, rd+1, *len-1);
1189         if(n < 0)
1190                 return LDNS_WIREPARSE_ERR_SYNTAX_B32_EXT;
1191         *len = (size_t)n+1;
1192         return LDNS_WIREPARSE_ERR_OK;
1193 }
1194
1195 int sldns_str2wire_hex_buf(const char* str, uint8_t* rd, size_t* len)
1196 {
1197         const char* s = str;
1198         size_t dlen = 0; /* number of hexdigits parsed */
1199         while(*s) {
1200                 if(isspace((unsigned char)*s)) {
1201                         s++;
1202                         continue;
1203                 }
1204                 if(!isxdigit((unsigned char)*s))
1205                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1206                 if(*len < dlen/2 + 1)
1207                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1208                                 s-str);
1209                 if((dlen&1)==0)
1210                         rd[dlen/2] = (uint8_t)sldns_hexdigit_to_int(*s++) * 16;
1211                 else    rd[dlen/2] += (uint8_t)sldns_hexdigit_to_int(*s++);
1212                 dlen++;
1213         }
1214         if((dlen&1)!=0)
1215                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1216         *len = dlen/2;
1217         return LDNS_WIREPARSE_ERR_OK;
1218 }
1219
1220 int sldns_str2wire_nsec_buf(const char* str, uint8_t* rd, size_t* len)
1221 {
1222         const char *delim = "\n\t ";
1223         char token[64]; /* for a type name */
1224         size_t type_count = 0;
1225         int block;
1226         size_t used = 0;
1227         uint16_t maxtype = 0;
1228         uint8_t typebits[8192]; /* 65536 bits */
1229         uint8_t window_in_use[256];
1230
1231         /* string in buffer */
1232         sldns_buffer strbuf;
1233         sldns_buffer_init_frm_data(&strbuf, (uint8_t*)str, strlen(str));
1234
1235         /* parse the types */
1236         memset(typebits, 0, sizeof(typebits));
1237         memset(window_in_use, 0, sizeof(window_in_use));
1238         while(sldns_buffer_remaining(&strbuf) > 0 &&
1239                 sldns_bget_token(&strbuf, token, delim, sizeof(token)) != -1) {
1240                 uint16_t t = sldns_get_rr_type_by_name(token);
1241                 if(token[0] == 0)
1242                         continue;
1243                 if(t == 0 && strcmp(token, "TYPE0") != 0)
1244                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TYPE,
1245                                 sldns_buffer_position(&strbuf));
1246                 typebits[t/8] |= (0x80>>(t%8));
1247                 window_in_use[t/256] = 1;
1248                 type_count++;
1249                 if(t > maxtype) maxtype = t;
1250         }
1251
1252         /* empty NSEC bitmap */
1253         if(type_count == 0) {
1254                 *len = 0;
1255                 return LDNS_WIREPARSE_ERR_OK;
1256         }
1257
1258         /* encode windows {u8 windowblock, u8 bitmaplength, 0-32u8 bitmap},
1259          * block is 0-255 upper octet of types, length if 0-32. */
1260         for(block = 0; block <= (int)maxtype/256; block++) {
1261                 int i, blocklen = 0;
1262                 if(!window_in_use[block])
1263                         continue;
1264                 for(i=0; i<32; i++) {
1265                         if(typebits[block*32+i] != 0)
1266                                 blocklen = i+1;
1267                 }
1268                 if(blocklen == 0)
1269                         continue; /* empty window should have been !in_use */
1270                 if(used+blocklen+2 > *len)
1271                         return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1272                 rd[used+0] = (uint8_t)block;
1273                 rd[used+1] = (uint8_t)blocklen;
1274                 for(i=0; i<blocklen; i++) {
1275                         rd[used+2+i] = typebits[block*32+i];
1276                 }
1277                 used += blocklen+2;
1278         }
1279         *len = used;
1280         return LDNS_WIREPARSE_ERR_OK;
1281 }
1282
1283 int sldns_str2wire_type_buf(const char* str, uint8_t* rd, size_t* len)
1284 {
1285         uint16_t t = sldns_get_rr_type_by_name(str);
1286         if(t == 0 && strcmp(str, "TYPE0") != 0)
1287                 return LDNS_WIREPARSE_ERR_SYNTAX_TYPE;
1288         if(*len < 2)
1289                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1290         sldns_write_uint16(rd, t);
1291         *len = 2;
1292         return LDNS_WIREPARSE_ERR_OK;
1293 }
1294
1295 int sldns_str2wire_class_buf(const char* str, uint8_t* rd, size_t* len)
1296 {
1297         uint16_t c = sldns_get_rr_class_by_name(str);
1298         if(c == 0 && strcmp(str, "CLASS0") != 0)
1299                 return LDNS_WIREPARSE_ERR_SYNTAX_CLASS;
1300         if(*len < 2)
1301                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1302         sldns_write_uint16(rd, c);
1303         *len = 2;
1304         return LDNS_WIREPARSE_ERR_OK;
1305 }
1306
1307 /* An certificate alg field can either be specified as a 8 bits number
1308  * or by its symbolic name. Handle both */
1309 int sldns_str2wire_cert_alg_buf(const char* str, uint8_t* rd, size_t* len)
1310 {
1311         sldns_lookup_table *lt = sldns_lookup_by_name(sldns_cert_algorithms,
1312                 str);
1313         if(*len < 2)
1314                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1315         if(lt) {
1316                 sldns_write_uint16(rd, (uint16_t)lt->id);
1317         } else {
1318                 int s = sldns_str2wire_int16_buf(str, rd, len);
1319                 if(s) return s;
1320                 if(sldns_read_uint16(rd) == 0)
1321                         return LDNS_WIREPARSE_ERR_CERT_BAD_ALGORITHM;
1322         }
1323         *len = 2;
1324         return LDNS_WIREPARSE_ERR_OK;
1325 }
1326
1327 /* An alg field can either be specified as a 8 bits number
1328  * or by its symbolic name. Handle both */
1329 int sldns_str2wire_alg_buf(const char* str, uint8_t* rd, size_t* len)
1330 {
1331         sldns_lookup_table *lt = sldns_lookup_by_name(sldns_algorithms, str);
1332         if(*len < 1)
1333                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1334         if(lt) {
1335                 rd[0] = (uint8_t)lt->id;
1336                 *len = 1;
1337         } else {
1338                 /* try as-is (a number) */
1339                 return sldns_str2wire_int8_buf(str, rd, len);
1340         }
1341         return LDNS_WIREPARSE_ERR_OK;
1342 }
1343
1344 int sldns_str2wire_time_buf(const char* str, uint8_t* rd, size_t* len)
1345 {
1346         /* convert a time YYYYDDMMHHMMSS to wireformat */
1347         struct tm tm;
1348         if(*len < 4)
1349                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1350
1351         /* Try to scan the time... */
1352         memset(&tm, 0, sizeof(tm));
1353         if (strlen(str) == 14 && sscanf(str, "%4d%2d%2d%2d%2d%2d",
1354                 &tm.tm_year, &tm.tm_mon, &tm.tm_mday, &tm.tm_hour,
1355                 &tm.tm_min, &tm.tm_sec) == 6) {
1356                 tm.tm_year -= 1900;
1357                 tm.tm_mon--;
1358                 /* Check values */
1359                 if (tm.tm_year < 70)
1360                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1361                 if (tm.tm_mon < 0 || tm.tm_mon > 11)
1362                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1363                 if (tm.tm_mday < 1 || tm.tm_mday > 31)
1364                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1365                 if (tm.tm_hour < 0 || tm.tm_hour > 23)
1366                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1367                 if (tm.tm_min < 0 || tm.tm_min > 59)
1368                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1369                 if (tm.tm_sec < 0 || tm.tm_sec > 59)
1370                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1371
1372                 sldns_write_uint32(rd, sldns_mktime_from_utc(&tm));
1373         } else {
1374                 /* handle it as 32 bits timestamp */
1375                 char *end;
1376                 uint32_t l = (uint32_t)strtol((char*)str, &end, 10);
1377                 if(*end != 0)
1378                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TIME,
1379                                 end-(char*)str);
1380                 sldns_write_uint32(rd, l);
1381         }
1382         *len = 4;
1383         return LDNS_WIREPARSE_ERR_OK;
1384 }
1385
1386 int sldns_str2wire_period_buf(const char* str, uint8_t* rd, size_t* len)
1387 {
1388         const char* end;
1389         uint32_t p = sldns_str2period(str, &end);
1390         if(*end != 0)
1391                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_PERIOD, end-str);
1392         if(*len < 4)
1393                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1394         sldns_write_uint32(rd, p);
1395         *len = 4;
1396         return LDNS_WIREPARSE_ERR_OK;
1397 }
1398
1399 /** read "<digits>[.<digits>][mM]" into mantissa exponent format for LOC type */
1400 static int
1401 loc_parse_cm(char* my_str, char** endstr, uint8_t* m, uint8_t* e)
1402 {
1403         uint32_t meters = 0, cm = 0, val;
1404         while (isblank((unsigned char)*my_str)) {
1405                 my_str++;
1406         }
1407         meters = (uint32_t)strtol(my_str, &my_str, 10);
1408         if (*my_str == '.') {
1409                 my_str++;
1410                 cm = (uint32_t)strtol(my_str, &my_str, 10);
1411         }
1412         if (meters >= 1) {
1413                 *e = 2;
1414                 val = meters;
1415         } else  {
1416                 *e = 0;
1417                 val = cm;
1418         }
1419         while(val >= 10) {
1420                 (*e)++;
1421                 val /= 10;
1422         }
1423         *m = (uint8_t)val;
1424
1425         if (*e > 9)
1426                 return 0;
1427         if (*my_str == 'm' || *my_str == 'M') {
1428                 my_str++;
1429         }
1430         *endstr = my_str;
1431         return 1;
1432 }
1433
1434 int sldns_str2wire_loc_buf(const char* str, uint8_t* rd, size_t* len)
1435 {
1436         uint32_t latitude = 0;
1437         uint32_t longitude = 0;
1438         uint32_t altitude = 0;
1439
1440         uint32_t equator = (uint32_t)1<<31; /* 2**31 */
1441
1442         /* only support version 0 */
1443         uint32_t h = 0;
1444         uint32_t m = 0;
1445         uint8_t size_b = 1, size_e = 2;
1446         uint8_t horiz_pre_b = 1, horiz_pre_e = 6;
1447         uint8_t vert_pre_b = 1, vert_pre_e = 3;
1448
1449         double s = 0.0;
1450         int northerness;
1451         int easterness;
1452
1453         char *my_str = (char *) str;
1454
1455         if (isdigit((unsigned char) *my_str)) {
1456                 h = (uint32_t) strtol(my_str, &my_str, 10);
1457         } else {
1458                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1459         }
1460
1461         while (isblank((unsigned char) *my_str)) {
1462                 my_str++;
1463         }
1464
1465         if (isdigit((unsigned char) *my_str)) {
1466                 m = (uint32_t) strtol(my_str, &my_str, 10);
1467         } else if (*my_str == 'N' || *my_str == 'S') {
1468                 goto north;
1469         } else {
1470                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1471         }
1472
1473         while (isblank((unsigned char) *my_str)) {
1474                 my_str++;
1475         }
1476
1477         if (isdigit((unsigned char) *my_str)) {
1478                 s = strtod(my_str, &my_str);
1479         }
1480
1481         /* skip blanks before norterness */
1482         while (isblank((unsigned char) *my_str)) {
1483                 my_str++;
1484         }
1485
1486 north:
1487         if (*my_str == 'N') {
1488                 northerness = 1;
1489         } else if (*my_str == 'S') {
1490                 northerness = 0;
1491         } else {
1492                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1493         }
1494
1495         my_str++;
1496
1497         /* store number */
1498         s = 1000.0 * s;
1499         /* add a little to make floor in conversion a round */
1500         s += 0.0005;
1501         latitude = (uint32_t) s;
1502         latitude += 1000 * 60 * m;
1503         latitude += 1000 * 60 * 60 * h;
1504         if (northerness) {
1505                 latitude = equator + latitude;
1506         } else {
1507                 latitude = equator - latitude;
1508         }
1509         while (isblank((unsigned char)*my_str)) {
1510                 my_str++;
1511         }
1512
1513         if (isdigit((unsigned char) *my_str)) {
1514                 h = (uint32_t) strtol(my_str, &my_str, 10);
1515         } else {
1516                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1517         }
1518
1519         while (isblank((unsigned char) *my_str)) {
1520                 my_str++;
1521         }
1522
1523         if (isdigit((unsigned char) *my_str)) {
1524                 m = (uint32_t) strtol(my_str, &my_str, 10);
1525         } else if (*my_str == 'E' || *my_str == 'W') {
1526                 goto east;
1527         } else {
1528                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1529         }
1530
1531         while (isblank((unsigned char)*my_str)) {
1532                 my_str++;
1533         }
1534
1535         if (isdigit((unsigned char) *my_str)) {
1536                 s = strtod(my_str, &my_str);
1537         }
1538
1539         /* skip blanks before easterness */
1540         while (isblank((unsigned char)*my_str)) {
1541                 my_str++;
1542         }
1543
1544 east:
1545         if (*my_str == 'E') {
1546                 easterness = 1;
1547         } else if (*my_str == 'W') {
1548                 easterness = 0;
1549         } else {
1550                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1551         }
1552
1553         my_str++;
1554
1555         /* store number */
1556         s *= 1000.0;
1557         /* add a little to make floor in conversion a round */
1558         s += 0.0005;
1559         longitude = (uint32_t) s;
1560         longitude += 1000 * 60 * m;
1561         longitude += 1000 * 60 * 60 * h;
1562
1563         if (easterness) {
1564                 longitude += equator;
1565         } else {
1566                 longitude = equator - longitude;
1567         }
1568
1569         altitude = (uint32_t)(strtod(my_str, &my_str)*100.0 +
1570                 10000000.0 + 0.5);
1571         if (*my_str == 'm' || *my_str == 'M') {
1572                 my_str++;
1573         }
1574
1575         if (strlen(my_str) > 0) {
1576                 if(!loc_parse_cm(my_str, &my_str, &size_b, &size_e))
1577                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1578         }
1579
1580         if (strlen(my_str) > 0) {
1581                 if(!loc_parse_cm(my_str, &my_str, &horiz_pre_b, &horiz_pre_e))
1582                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1583         }
1584
1585         if (strlen(my_str) > 0) {
1586                 if(!loc_parse_cm(my_str, &my_str, &vert_pre_b, &vert_pre_e))
1587                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1588         }
1589
1590         if(*len < 16)
1591                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1592         rd[0] = 0;
1593         rd[1] = ((size_b << 4) & 0xf0) | (size_e & 0x0f);
1594         rd[2] = ((horiz_pre_b << 4) & 0xf0) | (horiz_pre_e & 0x0f);
1595         rd[3] = ((vert_pre_b << 4) & 0xf0) | (vert_pre_e & 0x0f);
1596         sldns_write_uint32(rd + 4, latitude);
1597         sldns_write_uint32(rd + 8, longitude);
1598         sldns_write_uint32(rd + 12, altitude);
1599         *len = 16;
1600         return LDNS_WIREPARSE_ERR_OK;
1601 }
1602
1603 static void
1604 ldns_tolower_str(char* s)
1605 {
1606         if(s) {
1607                 while(*s) {
1608                         *s = (char)tolower((unsigned char)*s);
1609                         s++;
1610                 }
1611         }
1612 }
1613
1614 int sldns_str2wire_wks_buf(const char* str, uint8_t* rd, size_t* len)
1615 {
1616         int rd_len = 1;
1617         int have_proto = 0;
1618         char token[50], proto_str[50];
1619         sldns_buffer strbuf;
1620         sldns_buffer_init_frm_data(&strbuf, (uint8_t*)str, strlen(str));
1621         proto_str[0]=0;
1622
1623         /* check we have one byte for proto */
1624         if(*len < 1)
1625                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1626
1627         while(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) > 0) {
1628                 ldns_tolower_str(token);
1629                 if(!have_proto) {
1630                         struct protoent *p = getprotobyname(token);
1631                         have_proto = 1;
1632                         if(p) rd[0] = (uint8_t)p->p_proto;
1633                         else rd[0] = (uint8_t)atoi(token);
1634                         (void)strlcpy(proto_str, token, sizeof(proto_str));
1635                 } else {
1636                         int serv_port;
1637                         struct servent *serv = getservbyname(token, proto_str);
1638                         if(serv) serv_port=(int)ntohs((uint16_t)serv->s_port);
1639                         else {
1640                                 serv_port = atoi(token);
1641                                 if(serv_port == 0 && strcmp(token, "0") != 0) {
1642 #ifdef HAVE_ENDSERVENT
1643                                         endservent();
1644 #endif
1645 #ifdef HAVE_ENDPROTOENT
1646                                         endprotoent();
1647 #endif
1648                                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX,
1649                                                 sldns_buffer_position(&strbuf));
1650                                 }
1651                                 if(serv_port < 0 || serv_port > 65535) {
1652 #ifdef HAVE_ENDSERVENT
1653                                         endservent();
1654 #endif
1655 #ifdef HAVE_ENDPROTOENT
1656                                         endprotoent();
1657 #endif
1658                                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX,
1659                                                 sldns_buffer_position(&strbuf));
1660                                 }
1661                         }
1662                         if(rd_len < 1+serv_port/8+1) {
1663                                 /* bitmap is larger, init new bytes at 0 */
1664                                 if(*len < 1+(size_t)serv_port/8+1) {
1665 #ifdef HAVE_ENDSERVENT
1666                                         endservent();
1667 #endif
1668 #ifdef HAVE_ENDPROTOENT
1669                                         endprotoent();
1670 #endif
1671                                         return RET_ERR(
1672                                         LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1673                                         sldns_buffer_position(&strbuf));
1674                                 }
1675                                 memset(rd+rd_len, 0, 1+(size_t)serv_port/8+1-rd_len);
1676                                 rd_len = 1+serv_port/8+1;
1677                         }
1678                         rd[1+ serv_port/8] |= (1 << (7 - serv_port % 8));
1679                 }
1680         }
1681         *len = (size_t)rd_len;
1682
1683 #ifdef HAVE_ENDSERVENT
1684         endservent();
1685 #endif
1686 #ifdef HAVE_ENDPROTOENT
1687         endprotoent();
1688 #endif
1689         return LDNS_WIREPARSE_ERR_OK;
1690 }
1691
1692 int sldns_str2wire_nsap_buf(const char* str, uint8_t* rd, size_t* len)
1693 {
1694         const char* s = str;
1695         size_t slen;
1696         size_t dlen = 0; /* number of hexdigits parsed */
1697
1698         /* just a hex string with optional dots? */
1699         if (s[0] != '0' || s[1] != 'x')
1700                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1701         s += 2;
1702         slen = strlen(s);
1703         if(slen > LDNS_MAX_RDFLEN*2)
1704                 return LDNS_WIREPARSE_ERR_LABEL_OVERFLOW;
1705         while(*s) {
1706                 if(isspace((unsigned char)*s) || *s == '.') {
1707                         s++;
1708                         continue;
1709                 }
1710                 if(!isxdigit((unsigned char)*s))
1711                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1712                 if(*len < dlen/2 + 1)
1713                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1714                                 s-str);
1715                 if((dlen&1)==0)
1716                         rd[dlen/2] = (uint8_t)sldns_hexdigit_to_int(*s++) * 16;
1717                 else    rd[dlen/2] += sldns_hexdigit_to_int(*s++);
1718                 dlen++;
1719         }
1720         if((dlen&1)!=0)
1721                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1722         *len = dlen/2;
1723         return LDNS_WIREPARSE_ERR_OK;
1724 }
1725
1726 int sldns_str2wire_atma_buf(const char* str, uint8_t* rd, size_t* len)
1727 {
1728         const char* s = str;
1729         size_t slen = strlen(str);
1730         size_t dlen = 0; /* number of hexdigits parsed */
1731
1732         /* just a hex string with optional dots? */
1733         /* notimpl e.164 format */
1734         if(slen > LDNS_MAX_RDFLEN*2)
1735                 return LDNS_WIREPARSE_ERR_LABEL_OVERFLOW;
1736         while(*s) {
1737                 if(isspace((unsigned char)*s) || *s == '.') {
1738                         s++;
1739                         continue;
1740                 }
1741                 if(!isxdigit((unsigned char)*s))
1742                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1743                 if(*len < dlen/2 + 1)
1744                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1745                                 s-str);
1746                 if((dlen&1)==0)
1747                         rd[dlen/2] = (uint8_t)sldns_hexdigit_to_int(*s++) * 16;
1748                 else    rd[dlen/2] += sldns_hexdigit_to_int(*s++);
1749                 dlen++;
1750         }
1751         if((dlen&1)!=0)
1752                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1753         *len = dlen/2;
1754         return LDNS_WIREPARSE_ERR_OK;
1755 }
1756
1757 int sldns_str2wire_ipseckey_buf(const char* str, uint8_t* rd, size_t* len)
1758 {
1759         size_t gwlen = 0, keylen = 0;
1760         int s;
1761         uint8_t gwtype;
1762         char token[512];
1763         sldns_buffer strbuf;
1764         sldns_buffer_init_frm_data(&strbuf, (uint8_t*)str, strlen(str));
1765
1766         if(*len < 3)
1767                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1768         /* precedence */
1769         if(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) <= 0)
1770                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1771                         sldns_buffer_position(&strbuf));
1772         rd[0] = (uint8_t)atoi(token);
1773         /* gateway_type */
1774         if(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) <= 0)
1775                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1776                         sldns_buffer_position(&strbuf));
1777         rd[1] = (uint8_t)atoi(token);
1778         gwtype = rd[1];
1779         /* algorithm */
1780         if(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) <= 0)
1781                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1782                         sldns_buffer_position(&strbuf));
1783         rd[2] = (uint8_t)atoi(token);
1784
1785         /* gateway */
1786         if(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) <= 0)
1787                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1788                         sldns_buffer_position(&strbuf));
1789         if(gwtype == 0) {
1790                 /* NOGATEWAY */
1791                 if(strcmp(token, ".") != 0)
1792                         return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1793                                 sldns_buffer_position(&strbuf));
1794                 gwlen = 0;
1795         } else if(gwtype == 1) {
1796                 /* IP4 */
1797                 gwlen = *len - 3;
1798                 s = sldns_str2wire_a_buf(token, rd+3, &gwlen);
1799                 if(s) return RET_ERR_SHIFT(s, sldns_buffer_position(&strbuf));
1800         } else if(gwtype == 2) {
1801                 /* IP6 */
1802                 gwlen = *len - 3;
1803                 s = sldns_str2wire_aaaa_buf(token, rd+3, &gwlen);
1804                 if(s) return RET_ERR_SHIFT(s, sldns_buffer_position(&strbuf));
1805         } else if(gwtype == 3) {
1806                 /* DNAME */
1807                 gwlen = *len - 3;
1808                 s = sldns_str2wire_dname_buf(token, rd+3, &gwlen);
1809                 if(s) return RET_ERR_SHIFT(s, sldns_buffer_position(&strbuf));
1810         } else {
1811                 /* unknown gateway type */
1812                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1813                         sldns_buffer_position(&strbuf));
1814         }
1815         /* double check for size */
1816         if(*len < 3 + gwlen)
1817                 return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1818                         sldns_buffer_position(&strbuf));
1819
1820         /* publickey in remainder of strbuf */
1821         keylen = *len - 3 - gwlen;
1822         s = sldns_str2wire_b64_buf((const char*)sldns_buffer_current(&strbuf),
1823                 rd+3+gwlen, &keylen);
1824         if(s) return RET_ERR_SHIFT(s, sldns_buffer_position(&strbuf));
1825
1826         *len = 3 + gwlen + keylen;
1827         return LDNS_WIREPARSE_ERR_OK;
1828 }
1829
1830 int sldns_str2wire_nsec3_salt_buf(const char* str, uint8_t* rd, size_t* len)
1831 {
1832         int i, salt_length_str = (int)strlen(str);
1833         if (salt_length_str == 1 && str[0] == '-') {
1834                 salt_length_str = 0;
1835         } else if (salt_length_str % 2 != 0) {
1836                 return LDNS_WIREPARSE_ERR_SYNTAX_HEX;
1837         }
1838         if (salt_length_str > 512)
1839                 return LDNS_WIREPARSE_ERR_SYNTAX_HEX;
1840         if(*len < 1+(size_t)salt_length_str / 2)
1841                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1842         rd[0] = (uint8_t) (salt_length_str / 2);
1843         for (i = 0; i < salt_length_str; i += 2) {
1844                 if (isxdigit((unsigned char)str[i]) &&
1845                         isxdigit((unsigned char)str[i+1])) {
1846                         rd[1+i/2] = (uint8_t)(sldns_hexdigit_to_int(str[i])*16
1847                                 + sldns_hexdigit_to_int(str[i+1]));
1848                 } else {
1849                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, i);
1850                 }
1851         }
1852         *len = 1 + (size_t)rd[0];
1853         return LDNS_WIREPARSE_ERR_OK;
1854 }
1855
1856 int sldns_str2wire_ilnp64_buf(const char* str, uint8_t* rd, size_t* len)
1857 {
1858         unsigned int a, b, c, d;
1859         uint16_t shorts[4];
1860         int l;
1861         if(*len < sizeof(shorts))
1862                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1863
1864         if (sscanf(str, "%4x:%4x:%4x:%4x%n", &a, &b, &c, &d, &l) != 4 ||
1865                         l != (int)strlen(str) || /* more data to read */
1866                         strpbrk(str, "+-")       /* signed hexes */
1867                         )
1868                 return LDNS_WIREPARSE_ERR_SYNTAX_ILNP64;
1869         shorts[0] = htons(a);
1870         shorts[1] = htons(b);
1871         shorts[2] = htons(c);
1872         shorts[3] = htons(d);
1873         memmove(rd, &shorts, sizeof(shorts));
1874         *len = sizeof(shorts);
1875         return LDNS_WIREPARSE_ERR_OK;
1876 }
1877
1878 int sldns_str2wire_eui48_buf(const char* str, uint8_t* rd, size_t* len)
1879 {
1880         unsigned int a, b, c, d, e, f;
1881         int l;
1882
1883         if(*len < 6)
1884                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1885         if (sscanf(str, "%2x-%2x-%2x-%2x-%2x-%2x%n",
1886                         &a, &b, &c, &d, &e, &f, &l) != 6 ||
1887                         l != (int)strlen(str))
1888                 return LDNS_WIREPARSE_ERR_SYNTAX_EUI48;
1889         rd[0] = a;
1890         rd[1] = b;
1891         rd[2] = c;
1892         rd[3] = d;
1893         rd[4] = e;
1894         rd[5] = f;
1895         *len = 6;
1896         return LDNS_WIREPARSE_ERR_OK;
1897 }
1898
1899 int sldns_str2wire_eui64_buf(const char* str, uint8_t* rd, size_t* len)
1900 {
1901         unsigned int a, b, c, d, e, f, g, h;
1902         int l;
1903
1904         if(*len < 8)
1905                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1906         if (sscanf(str, "%2x-%2x-%2x-%2x-%2x-%2x-%2x-%2x%n",
1907                         &a, &b, &c, &d, &e, &f, &g, &h, &l) != 8 ||
1908                         l != (int)strlen(str))
1909                 return LDNS_WIREPARSE_ERR_SYNTAX_EUI64;
1910         rd[0] = a;
1911         rd[1] = b;
1912         rd[2] = c;
1913         rd[3] = d;
1914         rd[4] = e;
1915         rd[5] = f;
1916         rd[6] = g;
1917         rd[7] = h;
1918         *len = 8;
1919         return LDNS_WIREPARSE_ERR_OK;
1920 }
1921
1922 int sldns_str2wire_tag_buf(const char* str, uint8_t* rd, size_t* len)
1923 {
1924         size_t slen = strlen(str);
1925         const char* ptr;
1926
1927         if (slen > 255)
1928                 return LDNS_WIREPARSE_ERR_SYNTAX_TAG;
1929         if(*len < slen+1)
1930                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1931         for (ptr = str; *ptr; ptr++) {
1932                 if(!isalnum((unsigned char)*ptr))
1933                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TAG, ptr-str);
1934         }
1935         rd[0] = slen;
1936         memmove(rd+1, str, slen);
1937         *len = slen+1;
1938         return LDNS_WIREPARSE_ERR_OK;
1939 }
1940
1941 int sldns_str2wire_long_str_buf(const char* str, uint8_t* rd, size_t* len)
1942 {
1943         uint8_t ch = 0;
1944         const char* pstr = str;
1945         size_t length = 0;
1946
1947         /* Fill data with parsed bytes */
1948         while (sldns_parse_char(&ch, &pstr)) {
1949                 if(*len < length+1)
1950                         return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1951                 rd[length++] = ch;
1952         }
1953         if(!pstr)
1954                 return LDNS_WIREPARSE_ERR_SYNTAX_BAD_ESCAPE;
1955         *len = length;
1956         return LDNS_WIREPARSE_ERR_OK;
1957 }
1958
1959 int sldns_str2wire_hip_buf(const char* str, uint8_t* rd, size_t* len)
1960 {
1961         char* s, *end;
1962         int e;
1963         size_t hitlen, pklen = 0;
1964         /* presentation format:
1965          *      pk-algo HIThex pubkeybase64
1966          * wireformat:
1967          *      hitlen[1byte] pkalgo[1byte] pubkeylen[2byte] [hit] [pubkey] */
1968         if(*len < 4)
1969                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1970
1971         /* read PK algorithm */
1972         rd[1] = (uint8_t)strtol((char*)str, &s, 10);
1973         if(*s != ' ')
1974                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_INT, s-(char*)str);
1975         s++;
1976         while(*s == ' ')
1977                 s++;
1978
1979         /* read HIT hex tag */
1980         /* zero terminate the tag (replace later) */
1981         end = strchr(s, ' ');
1982         if(!end) return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX, s-(char*)str);
1983         *end = 0;
1984         hitlen = *len - 4;
1985         if((e = sldns_str2wire_hex_buf(s, rd+4, &hitlen)) != 0) {
1986                 *end = ' ';
1987                 return RET_ERR_SHIFT(e, s-(char*)str);
1988         }
1989         if(hitlen > 255) {
1990                 *end = ' ';
1991                 return RET_ERR(LDNS_WIREPARSE_ERR_LABEL_OVERFLOW, s-(char*)str+255*2);
1992         }
1993         rd[0] = (uint8_t)hitlen;
1994         *end = ' ';
1995         s = end+1;
1996
1997         /* read pubkey base64 sequence */
1998         pklen = *len - 4 - hitlen;
1999         if((e = sldns_str2wire_b64_buf(s, rd+4+hitlen, &pklen)) != 0)
2000                 return RET_ERR_SHIFT(e, s-(char*)str);
2001         if(pklen > 65535)
2002                 return RET_ERR(LDNS_WIREPARSE_ERR_LABEL_OVERFLOW, s-(char*)str+65535);
2003         sldns_write_uint16(rd+2, pklen);
2004
2005         *len = 4 + hitlen + pklen;
2006         return LDNS_WIREPARSE_ERR_OK;
2007 }
2008
2009 int sldns_str2wire_int16_data_buf(const char* str, uint8_t* rd, size_t* len)
2010 {
2011         size_t sz = sldns_b64_pton_calculate_size(strlen(str));
2012         int n;
2013         if(*len < sz+2)
2014                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
2015         if(sz > 65535)
2016                 return LDNS_WIREPARSE_ERR_LABEL_OVERFLOW;
2017         n = sldns_b64_pton(str, rd+2, (*len)-2);
2018         if(n < 0)
2019                 return LDNS_WIREPARSE_ERR_SYNTAX_B64;
2020         sldns_write_uint16(rd, (uint16_t)n);
2021         *len = (size_t)n;
2022         return LDNS_WIREPARSE_ERR_OK;
2023 }