contrib/unbound/sldns/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 "sldns/str2wire.h"
  16 #include "sldns/wire2str.h"
  17 #include "sldns/sbuffer.h"
  18 #include "sldns/parse.h"
  19 #include "sldns/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(*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, size_t r_cnt, size_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, size_t r_cnt, size_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         size_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                         } else if(rdftype == LDNS_RDF_TYPE_INT16_DATA &&
 668                                 strcmp(token, "0")!=0) {
 669                                 /* affix len and b64 fields */
 670                                 if(!sldns_affix_token(strbuf, token,
 671                                         &token_len, &quoted, &parens,
 672                                         &pre_data_pos, delimiters,
 673                                         rdftype, &token_strlen))
 674                                         break;
 675                         }
 676
 677                         /* normal RR */
 678                         if((status=rrinternal_parse_rdf(strbuf, token,
 679                                 token_len, rr, *rr_len, &rr_cur_len, rdftype,
 680                                 rr_type, r_cnt, r_max, dname_len, origin,
 681                                 origin_len)) != 0) {
 682                                 return status;
 683                         }
 684                 }
 685         }
 686         if(!was_unknown_rr_format && r_cnt+1 < r_min) {
 687                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_MISSING_VALUE,
 688                         sldns_buffer_position(strbuf));
 689         }
 690         while(parens != 0) {
 691                 /* read remainder, must be "" */
 692                 if(sldns_bget_token_par(strbuf, token, "\n", token_len,
 693                         &parens, " \t") == -1) {
 694                         if(parens != 0)
 695                                 return RET_ERR(LDNS_WIREPARSE_ERR_PARENTHESIS,
 696                                         sldns_buffer_position(strbuf));
 697                         break;
 698                 }
 699                 if(strcmp(token, "") != 0)
 700                         return RET_ERR(LDNS_WIREPARSE_ERR_PARENTHESIS,
 701                                 sldns_buffer_position(strbuf));
 702         }
 703         /* write rdata length */
 704         sldns_write_uint16(rr+dname_len+8, (uint16_t)(rr_cur_len-dname_len-10));
 705         *rr_len = rr_cur_len;
 706         return LDNS_WIREPARSE_ERR_OK;
 707 }
 708
 709 /*
 710  * trailing spaces are allowed
 711  * leading spaces are not allowed
 712  * allow ttl to be optional
 713  * class is optional too
 714  * if ttl is missing, and default_ttl is 0, use DEF_TTL
 715  * allow ttl to be written as 1d3h
 716  * So the RR should look like. e.g.
 717  * miek.nl. 3600 IN MX 10 elektron.atoom.net
 718  * or
 719  * miek.nl. 1h IN MX 10 elektron.atoom.net
 720  * or
 721  * miek.nl. IN MX 10 elektron.atoom.net
 722  */
 723 static int
 724 sldns_str2wire_rr_buf_internal(const char* str, uint8_t* rr, size_t* len,
 725         size_t* dname_len, uint32_t default_ttl, uint8_t* origin,
 726         size_t origin_len, uint8_t* prev, size_t prev_len, int question)
 727 {
 728         int status;
 729         int not_there = 0;
 730         char token[LDNS_MAX_RDFLEN+1];
 731         uint32_t ttl = 0;
 732         uint16_t tp = 0, cl = 0;
 733         size_t ddlen = 0;
 734
 735         /* string in buffer */
 736         sldns_buffer strbuf;
 737         sldns_buffer_init_frm_data(&strbuf, (uint8_t*)str, strlen(str));
 738         if(!dname_len) dname_len = &ddlen;
 739
 740         /* parse the owner */
 741         if((status=rrinternal_get_owner(&strbuf, rr, len, dname_len, origin,
 742                 origin_len, prev, prev_len, token, sizeof(token))) != 0)
 743                 return status;
 744
 745         /* parse the [ttl] [class] <type> */
 746         if((status=rrinternal_get_ttl(&strbuf, token, sizeof(token),
 747                 &not_there, &ttl, default_ttl)) != 0)
 748                 return status;
 749         if((status=rrinternal_get_class(&strbuf, token, sizeof(token),
 750                 &not_there, &cl)) != 0)
 751                 return status;
 752         if((status=rrinternal_get_type(&strbuf, token, sizeof(token),
 753                 &not_there, &tp)) != 0)
 754                 return status;
 755         /* put ttl, class, type into the rr result */
 756         if((status=rrinternal_write_typeclassttl(&strbuf, rr, *len, *dname_len, tp, cl,
 757                 ttl, question)) != 0)
 758                 return status;
 759         /* for a question-RR we are done, no rdata */
 760         if(question) {
 761                 *len = *dname_len + 4;
 762                 return LDNS_WIREPARSE_ERR_OK;
 763         }
 764
 765         /* rdata */
 766         if((status=rrinternal_parse_rdata(&strbuf, token, sizeof(token),
 767                 rr, len, *dname_len, tp, origin, origin_len)) != 0)
 768                 return status;
 769
 770         return LDNS_WIREPARSE_ERR_OK;
 771 }
 772
 773 int sldns_str2wire_rr_buf(const char* str, uint8_t* rr, size_t* len,
 774         size_t* dname_len, uint32_t default_ttl, uint8_t* origin,
 775         size_t origin_len, uint8_t* prev, size_t prev_len)
 776 {
 777         return sldns_str2wire_rr_buf_internal(str, rr, len, dname_len,
 778                 default_ttl, origin, origin_len, prev, prev_len, 0);
 779 }
 780
 781 int sldns_str2wire_rr_question_buf(const char* str, uint8_t* rr, size_t* len,
 782         size_t* dname_len, uint8_t* origin, size_t origin_len, uint8_t* prev,
 783         size_t prev_len)
 784 {
 785         return sldns_str2wire_rr_buf_internal(str, rr, len, dname_len,
 786                 0, origin, origin_len, prev, prev_len, 1);
 787 }
 788
 789 uint16_t sldns_wirerr_get_type(uint8_t* rr, size_t len, size_t dname_len)
 790 {
 791         if(len < dname_len+2)
 792                 return 0;
 793         return sldns_read_uint16(rr+dname_len);
 794 }
 795
 796 uint16_t sldns_wirerr_get_class(uint8_t* rr, size_t len, size_t dname_len)
 797 {
 798         if(len < dname_len+4)
 799                 return 0;
 800         return sldns_read_uint16(rr+dname_len+2);
 801 }
 802
 803 uint32_t sldns_wirerr_get_ttl(uint8_t* rr, size_t len, size_t dname_len)
 804 {
 805         if(len < dname_len+8)
 806                 return 0;
 807         return sldns_read_uint32(rr+dname_len+4);
 808 }
 809
 810 uint16_t sldns_wirerr_get_rdatalen(uint8_t* rr, size_t len, size_t dname_len)
 811 {
 812         if(len < dname_len+10)
 813                 return 0;
 814         return sldns_read_uint16(rr+dname_len+8);
 815 }
 816
 817 uint8_t* sldns_wirerr_get_rdata(uint8_t* rr, size_t len, size_t dname_len)
 818 {
 819         if(len < dname_len+10)
 820                 return NULL;
 821         return rr+dname_len+10;
 822 }
 823
 824 uint8_t* sldns_wirerr_get_rdatawl(uint8_t* rr, size_t len, size_t dname_len)
 825 {
 826         if(len < dname_len+10)
 827                 return NULL;
 828         return rr+dname_len+8;
 829 }
 830
 831 const char* sldns_get_errorstr_parse(int e)
 832 {
 833         sldns_lookup_table *lt;
 834         lt = sldns_lookup_by_id(sldns_wireparse_errors, LDNS_WIREPARSE_ERROR(e));
 835         return lt?lt->name:"unknown error";
 836 }
 837
 838 /* Strip whitespace from the start and the end of <line>.  */
 839 static char *
 840 sldns_strip_ws(char *line)
 841 {
 842         char *s = line, *e;
 843
 844         for (s = line; *s && isspace((unsigned char)*s); s++)
 845                 ;
 846         for (e = strchr(s, 0); e > s+2 && isspace((unsigned char)e[-1]) && e[-2] != '\\'; e--)
 847                 ;
 848         *e = 0;
 849         return s;
 850 }
 851
 852 int sldns_fp2wire_rr_buf(FILE* in, uint8_t* rr, size_t* len, size_t* dname_len,
 853         struct sldns_file_parse_state* parse_state)
 854 {
 855         char line[LDNS_RR_BUF_SIZE+1];
 856         ssize_t size;
 857
 858         /* read an entire line in from the file */
 859         if((size = sldns_fget_token_l(in, line, LDNS_PARSE_SKIP_SPACE,
 860                 LDNS_RR_BUF_SIZE, parse_state?&parse_state->lineno:NULL))
 861                 == -1) {
 862                 /* if last line was empty, we are now at feof, which is not
 863                  * always a parse error (happens when for instance last line
 864                  * was a comment)
 865                  */
 866                 return LDNS_WIREPARSE_ERR_SYNTAX;
 867         }
 868
 869         /* we can have the situation, where we've read ok, but still got
 870          * no bytes to play with, in this case size is 0 */
 871         if(size == 0) {
 872                 if(*len > 0)
 873                         rr[0] = 0;
 874                 *len = 0;
 875                 *dname_len = 0;
 876                 return LDNS_WIREPARSE_ERR_OK;
 877         }
 878
 879         if(strncmp(line, "$ORIGIN", 7) == 0 && isspace((unsigned char)line[7])) {
 880                 int s;
 881                 strlcpy((char*)rr, line, *len);
 882                 *len = 0;
 883                 *dname_len = 0;
 884                 if(!parse_state) return LDNS_WIREPARSE_ERR_OK;
 885                 parse_state->origin_len = sizeof(parse_state->origin);
 886                 s = sldns_str2wire_dname_buf(sldns_strip_ws(line+8),
 887                         parse_state->origin, &parse_state->origin_len);
 888                 if(s) parse_state->origin_len = 0;
 889                 return s;
 890         } else if(strncmp(line, "$TTL", 4) == 0 && isspace((unsigned char)line[4])) {
 891                 const char* end = NULL;
 892                 strlcpy((char*)rr, line, *len);
 893                 *len = 0;
 894                 *dname_len = 0;
 895                 if(!parse_state) return LDNS_WIREPARSE_ERR_OK;
 896                 parse_state->default_ttl = sldns_str2period(
 897                         sldns_strip_ws(line+5), &end);
 898         } else if (strncmp(line, "$INCLUDE", 8) == 0) {
 899                 strlcpy((char*)rr, line, *len);
 900                 *len = 0;
 901                 *dname_len = 0;
 902                 return LDNS_WIREPARSE_ERR_INCLUDE;
 903         } else if (strncmp(line, "$", 1) == 0) {
 904                 strlcpy((char*)rr, line, *len);
 905                 *len = 0;
 906                 *dname_len = 0;
 907                 return LDNS_WIREPARSE_ERR_INCLUDE;
 908         } else {
 909                 return sldns_str2wire_rr_buf(line, rr, len, dname_len,
 910                         parse_state?parse_state->default_ttl:0,
 911                         (parse_state&&parse_state->origin_len)?
 912                                 parse_state->origin:NULL,
 913                         parse_state?parse_state->origin_len:0,
 914                         (parse_state&&parse_state->prev_rr_len)?
 915                                 parse_state->prev_rr:NULL,
 916                         parse_state?parse_state->prev_rr_len:0);
 917         }
 918         return LDNS_WIREPARSE_ERR_OK;
 919 }
 920
 921 int sldns_str2wire_rdf_buf(const char* str, uint8_t* rd, size_t* len,
 922         sldns_rdf_type rdftype)
 923 {
 924         switch (rdftype) {
 925         case LDNS_RDF_TYPE_DNAME:
 926                 return sldns_str2wire_dname_buf(str, rd, len);
 927         case LDNS_RDF_TYPE_INT8:
 928                 return sldns_str2wire_int8_buf(str, rd, len);
 929         case LDNS_RDF_TYPE_INT16:
 930                 return sldns_str2wire_int16_buf(str, rd, len);
 931         case LDNS_RDF_TYPE_INT32:
 932                 return sldns_str2wire_int32_buf(str, rd, len);
 933         case LDNS_RDF_TYPE_A:
 934                 return sldns_str2wire_a_buf(str, rd, len);
 935         case LDNS_RDF_TYPE_AAAA:
 936                 return sldns_str2wire_aaaa_buf(str, rd, len);
 937         case LDNS_RDF_TYPE_STR:
 938                 return sldns_str2wire_str_buf(str, rd, len);
 939         case LDNS_RDF_TYPE_APL:
 940                 return sldns_str2wire_apl_buf(str, rd, len);
 941         case LDNS_RDF_TYPE_B64:
 942                 return sldns_str2wire_b64_buf(str, rd, len);
 943         case LDNS_RDF_TYPE_B32_EXT:
 944                 return sldns_str2wire_b32_ext_buf(str, rd, len);
 945         case LDNS_RDF_TYPE_HEX:
 946                 return sldns_str2wire_hex_buf(str, rd, len);
 947         case LDNS_RDF_TYPE_NSEC:
 948                 return sldns_str2wire_nsec_buf(str, rd, len);
 949         case LDNS_RDF_TYPE_TYPE:
 950                 return sldns_str2wire_type_buf(str, rd, len);
 951         case LDNS_RDF_TYPE_CLASS:
 952                 return sldns_str2wire_class_buf(str, rd, len);
 953         case LDNS_RDF_TYPE_CERT_ALG:
 954                 return sldns_str2wire_cert_alg_buf(str, rd, len);
 955         case LDNS_RDF_TYPE_ALG:
 956                 return sldns_str2wire_alg_buf(str, rd, len);
 957         case LDNS_RDF_TYPE_TIME:
 958                 return sldns_str2wire_time_buf(str, rd, len);
 959         case LDNS_RDF_TYPE_PERIOD:
 960                 return sldns_str2wire_period_buf(str, rd, len);
 961         case LDNS_RDF_TYPE_TSIGTIME:
 962                 return sldns_str2wire_tsigtime_buf(str, rd, len);
 963         case LDNS_RDF_TYPE_LOC:
 964                 return sldns_str2wire_loc_buf(str, rd, len);
 965         case LDNS_RDF_TYPE_WKS:
 966                 return sldns_str2wire_wks_buf(str, rd, len);
 967         case LDNS_RDF_TYPE_NSAP:
 968                 return sldns_str2wire_nsap_buf(str, rd, len);
 969         case LDNS_RDF_TYPE_ATMA:
 970                 return sldns_str2wire_atma_buf(str, rd, len);
 971         case LDNS_RDF_TYPE_IPSECKEY:
 972                 return sldns_str2wire_ipseckey_buf(str, rd, len);
 973         case LDNS_RDF_TYPE_NSEC3_SALT:
 974                 return sldns_str2wire_nsec3_salt_buf(str, rd, len);
 975         case LDNS_RDF_TYPE_NSEC3_NEXT_OWNER:
 976                 return sldns_str2wire_b32_ext_buf(str, rd, len);
 977         case LDNS_RDF_TYPE_ILNP64:
 978                 return sldns_str2wire_ilnp64_buf(str, rd, len);
 979         case LDNS_RDF_TYPE_EUI48:
 980                 return sldns_str2wire_eui48_buf(str, rd, len);
 981         case LDNS_RDF_TYPE_EUI64:
 982                 return sldns_str2wire_eui64_buf(str, rd, len);
 983         case LDNS_RDF_TYPE_TAG:
 984                 return sldns_str2wire_tag_buf(str, rd, len);
 985         case LDNS_RDF_TYPE_LONG_STR:
 986                 return sldns_str2wire_long_str_buf(str, rd, len);
 987         case LDNS_RDF_TYPE_TSIGERROR:
 988                 return sldns_str2wire_tsigerror_buf(str, rd, len);
 989         case LDNS_RDF_TYPE_HIP:
 990                 return sldns_str2wire_hip_buf(str, rd, len);
 991         case LDNS_RDF_TYPE_INT16_DATA:
 992                 return sldns_str2wire_int16_data_buf(str, rd, len);
 993         case LDNS_RDF_TYPE_UNKNOWN:
 994         case LDNS_RDF_TYPE_SERVICE:
 995                 return LDNS_WIREPARSE_ERR_NOT_IMPL;
 996         case LDNS_RDF_TYPE_NONE:
 997         default:
 998                 break;
 999         }
1000         return LDNS_WIREPARSE_ERR_GENERAL;
1001 }
1002
1003 int sldns_str2wire_int8_buf(const char* str, uint8_t* rd, size_t* len)
1004 {
1005         char* end;
1006         uint8_t r = (uint8_t)strtol((char*)str, &end, 10);
1007         if(*end != 0)
1008                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_INT, end-(char*)str);
1009         if(*len < 1)
1010                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1011         rd[0] = r;
1012         *len = 1;
1013         return LDNS_WIREPARSE_ERR_OK;
1014 }
1015
1016 int sldns_str2wire_int16_buf(const char* str, uint8_t* rd, size_t* len)
1017 {
1018         char* end;
1019         uint16_t r = (uint16_t)strtol((char*)str, &end, 10);
1020         if(*end != 0)
1021                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_INT, end-(char*)str);
1022         if(*len < 2)
1023                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1024         sldns_write_uint16(rd, r);
1025         *len = 2;
1026         return LDNS_WIREPARSE_ERR_OK;
1027 }
1028
1029 int sldns_str2wire_int32_buf(const char* str, uint8_t* rd, size_t* len)
1030 {
1031         char* end;
1032         uint32_t r;
1033         errno = 0; /* must set to zero before call,
1034                         note race condition on errno */
1035         if(*str == '-')
1036                 r = (uint32_t)strtol((char*)str, &end, 10);
1037         else    r = (uint32_t)strtoul((char*)str, &end, 10);
1038         if(*end != 0)
1039                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_INT, end-(char*)str);
1040         if(errno == ERANGE)
1041                 return LDNS_WIREPARSE_ERR_SYNTAX_INTEGER_OVERFLOW;
1042         if(*len < 4)
1043                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1044         sldns_write_uint32(rd, r);
1045         *len = 4;
1046         return LDNS_WIREPARSE_ERR_OK;
1047 }
1048
1049 int sldns_str2wire_a_buf(const char* str, uint8_t* rd, size_t* len)
1050 {
1051         struct in_addr address;
1052         if(inet_pton(AF_INET, (char*)str, &address) != 1)
1053                 return LDNS_WIREPARSE_ERR_SYNTAX_IP4;
1054         if(*len < sizeof(address))
1055                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1056         memmove(rd, &address, sizeof(address));
1057         *len = sizeof(address);
1058         return LDNS_WIREPARSE_ERR_OK;
1059 }
1060
1061 int sldns_str2wire_aaaa_buf(const char* str, uint8_t* rd, size_t* len)
1062 {
1063 #ifdef AF_INET6
1064         uint8_t address[LDNS_IP6ADDRLEN + 1];
1065         if(inet_pton(AF_INET6, (char*)str, address) != 1)
1066                 return LDNS_WIREPARSE_ERR_SYNTAX_IP6;
1067         if(*len < LDNS_IP6ADDRLEN)
1068                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1069         memmove(rd, address, LDNS_IP6ADDRLEN);
1070         *len = LDNS_IP6ADDRLEN;
1071         return LDNS_WIREPARSE_ERR_OK;
1072 #else
1073         return LDNS_WIREPARSE_ERR_NOT_IMPL;
1074 #endif
1075 }
1076
1077 int sldns_str2wire_str_buf(const char* str, uint8_t* rd, size_t* len)
1078 {
1079         uint8_t ch = 0;
1080         size_t sl = 0;
1081         const char* s = str;
1082         /* skip length byte */
1083         if(*len < 1)
1084                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1085
1086         /* read characters */
1087         while(sldns_parse_char(&ch, &s)) {
1088                 if(sl >= 255)
1089                         return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR, s-str);
1090                 if(*len < sl+1)
1091                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1092                                 s-str);
1093                 rd[++sl] = ch;
1094         }
1095         if(!s)
1096                 return LDNS_WIREPARSE_ERR_SYNTAX_BAD_ESCAPE;
1097         rd[0] = (uint8_t)sl;
1098         *len = sl+1;
1099         return LDNS_WIREPARSE_ERR_OK;
1100 }
1101
1102 int sldns_str2wire_apl_buf(const char* str, uint8_t* rd, size_t* len)
1103 {
1104         const char *my_str = str;
1105
1106         char my_ip_str[64];
1107         size_t ip_str_len;
1108
1109         uint16_t family;
1110         int negation;
1111         size_t adflength = 0;
1112         uint8_t data[16+4];
1113         uint8_t prefix;
1114         size_t i;
1115
1116         if(*my_str == '\0') {
1117                 /* empty APL element, no data, no string */
1118                 *len = 0;
1119                 return LDNS_WIREPARSE_ERR_OK;
1120         }
1121
1122         /* [!]afi:address/prefix */
1123         if (strlen(my_str) < 2
1124                         || strchr(my_str, ':') == NULL
1125                         || strchr(my_str, '/') == NULL
1126                         || strchr(my_str, ':') > strchr(my_str, '/')) {
1127                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1128         }
1129
1130         if (my_str[0] == '!') {
1131                 negation = 1;
1132                 my_str += 1;
1133         } else {
1134                 negation = 0;
1135         }
1136
1137         family = (uint16_t) atoi(my_str);
1138
1139         my_str = strchr(my_str, ':') + 1;
1140
1141         /* need ip addr and only ip addr for inet_pton */
1142         ip_str_len = (size_t) (strchr(my_str, '/') - my_str);
1143         if(ip_str_len+1 > sizeof(my_ip_str))
1144                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1145         (void)strlcpy(my_ip_str, my_str, sizeof(my_ip_str));
1146         my_ip_str[ip_str_len] = 0;
1147
1148         if (family == 1) {
1149                 /* ipv4 */
1150                 if(inet_pton(AF_INET, my_ip_str, data+4) == 0)
1151                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1152                 for (i = 0; i < 4; i++) {
1153                         if (data[i+4] != 0) {
1154                                 adflength = i + 1;
1155                         }
1156                 }
1157         } else if (family == 2) {
1158                 /* ipv6 */
1159                 if (inet_pton(AF_INET6, my_ip_str, data+4) == 0)
1160                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1161                 for (i = 0; i < 16; i++) {
1162                         if (data[i+4] != 0) {
1163                                 adflength = i + 1;
1164                         }
1165                 }
1166         } else {
1167                 /* unknown family */
1168                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1169         }
1170
1171         my_str = strchr(my_str, '/') + 1;
1172         prefix = (uint8_t) atoi(my_str);
1173
1174         sldns_write_uint16(data, family);
1175         data[2] = prefix;
1176         data[3] = (uint8_t)adflength;
1177         if (negation) {
1178                 /* set bit 1 of byte 3 */
1179                 data[3] = data[3] | 0x80;
1180         }
1181
1182         if(*len < 4+adflength)
1183                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1184         memmove(rd, data, 4+adflength);
1185         *len = 4+adflength;
1186         return LDNS_WIREPARSE_ERR_OK;
1187 }
1188
1189 int sldns_str2wire_b64_buf(const char* str, uint8_t* rd, size_t* len)
1190 {
1191         size_t sz = sldns_b64_pton_calculate_size(strlen(str));
1192         int n;
1193         if(strcmp(str, "0") == 0) {
1194                 *len = 0;
1195                 return LDNS_WIREPARSE_ERR_OK;
1196         }
1197         if(*len < sz)
1198                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1199         n = sldns_b64_pton(str, rd, *len);
1200         if(n < 0)
1201                 return LDNS_WIREPARSE_ERR_SYNTAX_B64;
1202         *len = (size_t)n;
1203         return LDNS_WIREPARSE_ERR_OK;
1204 }
1205
1206 int sldns_str2wire_b32_ext_buf(const char* str, uint8_t* rd, size_t* len)
1207 {
1208         size_t slen = strlen(str);
1209         size_t sz = sldns_b32_pton_calculate_size(slen);
1210         int n;
1211         if(*len < 1+sz)
1212                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1213         rd[0] = (uint8_t)sz;
1214         n = sldns_b32_pton_extended_hex(str, slen, rd+1, *len-1);
1215         if(n < 0)
1216                 return LDNS_WIREPARSE_ERR_SYNTAX_B32_EXT;
1217         *len = (size_t)n+1;
1218         return LDNS_WIREPARSE_ERR_OK;
1219 }
1220
1221 int sldns_str2wire_hex_buf(const char* str, uint8_t* rd, size_t* len)
1222 {
1223         const char* s = str;
1224         size_t dlen = 0; /* number of hexdigits parsed */
1225         while(*s) {
1226                 if(isspace((unsigned char)*s)) {
1227                         s++;
1228                         continue;
1229                 }
1230                 if(dlen == 0 && *s == '0' && *(s+1) == 0) {
1231                         *len = 0;
1232                         return LDNS_WIREPARSE_ERR_OK;
1233                 }
1234                 if(!isxdigit((unsigned char)*s))
1235                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1236                 if(*len < dlen/2 + 1)
1237                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1238                                 s-str);
1239                 if((dlen&1)==0)
1240                         rd[dlen/2] = (uint8_t)sldns_hexdigit_to_int(*s++) * 16;
1241                 else    rd[dlen/2] += (uint8_t)sldns_hexdigit_to_int(*s++);
1242                 dlen++;
1243         }
1244         if((dlen&1)!=0)
1245                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1246         *len = dlen/2;
1247         return LDNS_WIREPARSE_ERR_OK;
1248 }
1249
1250 int sldns_str2wire_nsec_buf(const char* str, uint8_t* rd, size_t* len)
1251 {
1252         const char *delim = "\n\t ";
1253         char token[64]; /* for a type name */
1254         size_t type_count = 0;
1255         int block;
1256         size_t used = 0;
1257         uint16_t maxtype = 0;
1258         uint8_t typebits[8192]; /* 65536 bits */
1259         uint8_t window_in_use[256];
1260
1261         /* string in buffer */
1262         sldns_buffer strbuf;
1263         sldns_buffer_init_frm_data(&strbuf, (uint8_t*)str, strlen(str));
1264
1265         /* parse the types */
1266         memset(typebits, 0, sizeof(typebits));
1267         memset(window_in_use, 0, sizeof(window_in_use));
1268         while(sldns_buffer_remaining(&strbuf) > 0 &&
1269                 sldns_bget_token(&strbuf, token, delim, sizeof(token)) != -1) {
1270                 uint16_t t = sldns_get_rr_type_by_name(token);
1271                 if(token[0] == 0)
1272                         continue;
1273                 if(t == 0 && strcmp(token, "TYPE0") != 0)
1274                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TYPE,
1275                                 sldns_buffer_position(&strbuf));
1276                 typebits[t/8] |= (0x80>>(t%8));
1277                 window_in_use[t/256] = 1;
1278                 type_count++;
1279                 if(t > maxtype) maxtype = t;
1280         }
1281
1282         /* empty NSEC bitmap */
1283         if(type_count == 0) {
1284                 *len = 0;
1285                 return LDNS_WIREPARSE_ERR_OK;
1286         }
1287
1288         /* encode windows {u8 windowblock, u8 bitmaplength, 0-32u8 bitmap},
1289          * block is 0-255 upper octet of types, length if 0-32. */
1290         for(block = 0; block <= (int)maxtype/256; block++) {
1291                 int i, blocklen = 0;
1292                 if(!window_in_use[block])
1293                         continue;
1294                 for(i=0; i<32; i++) {
1295                         if(typebits[block*32+i] != 0)
1296                                 blocklen = i+1;
1297                 }
1298                 if(blocklen == 0)
1299                         continue; /* empty window should have been !in_use */
1300                 if(used+blocklen+2 > *len)
1301                         return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1302                 rd[used+0] = (uint8_t)block;
1303                 rd[used+1] = (uint8_t)blocklen;
1304                 for(i=0; i<blocklen; i++) {
1305                         rd[used+2+i] = typebits[block*32+i];
1306                 }
1307                 used += blocklen+2;
1308         }
1309         *len = used;
1310         return LDNS_WIREPARSE_ERR_OK;
1311 }
1312
1313 int sldns_str2wire_type_buf(const char* str, uint8_t* rd, size_t* len)
1314 {
1315         uint16_t t = sldns_get_rr_type_by_name(str);
1316         if(t == 0 && strcmp(str, "TYPE0") != 0)
1317                 return LDNS_WIREPARSE_ERR_SYNTAX_TYPE;
1318         if(*len < 2)
1319                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1320         sldns_write_uint16(rd, t);
1321         *len = 2;
1322         return LDNS_WIREPARSE_ERR_OK;
1323 }
1324
1325 int sldns_str2wire_class_buf(const char* str, uint8_t* rd, size_t* len)
1326 {
1327         uint16_t c = sldns_get_rr_class_by_name(str);
1328         if(c == 0 && strcmp(str, "CLASS0") != 0)
1329                 return LDNS_WIREPARSE_ERR_SYNTAX_CLASS;
1330         if(*len < 2)
1331                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1332         sldns_write_uint16(rd, c);
1333         *len = 2;
1334         return LDNS_WIREPARSE_ERR_OK;
1335 }
1336
1337 /* An certificate alg field can either be specified as a 8 bits number
1338  * or by its symbolic name. Handle both */
1339 int sldns_str2wire_cert_alg_buf(const char* str, uint8_t* rd, size_t* len)
1340 {
1341         sldns_lookup_table *lt = sldns_lookup_by_name(sldns_cert_algorithms,
1342                 str);
1343         if(*len < 2)
1344                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1345         if(lt) {
1346                 sldns_write_uint16(rd, (uint16_t)lt->id);
1347         } else {
1348                 int s = sldns_str2wire_int16_buf(str, rd, len);
1349                 if(s) return s;
1350                 if(sldns_read_uint16(rd) == 0)
1351                         return LDNS_WIREPARSE_ERR_CERT_BAD_ALGORITHM;
1352         }
1353         *len = 2;
1354         return LDNS_WIREPARSE_ERR_OK;
1355 }
1356
1357 /* An alg field can either be specified as a 8 bits number
1358  * or by its symbolic name. Handle both */
1359 int sldns_str2wire_alg_buf(const char* str, uint8_t* rd, size_t* len)
1360 {
1361         sldns_lookup_table *lt = sldns_lookup_by_name(sldns_algorithms, str);
1362         if(*len < 1)
1363                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1364         if(lt) {
1365                 rd[0] = (uint8_t)lt->id;
1366                 *len = 1;
1367         } else {
1368                 /* try as-is (a number) */
1369                 return sldns_str2wire_int8_buf(str, rd, len);
1370         }
1371         return LDNS_WIREPARSE_ERR_OK;
1372 }
1373
1374 int sldns_str2wire_tsigerror_buf(const char* str, uint8_t* rd, size_t* len)
1375 {
1376         sldns_lookup_table *lt = sldns_lookup_by_name(sldns_tsig_errors, str);
1377         if(*len < 2)
1378                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1379         if(lt) {
1380                 sldns_write_uint16(rd, (uint16_t)lt->id);
1381                 *len = 2;
1382         } else {
1383                 /* try as-is (a number) */
1384                 return sldns_str2wire_int16_buf(str, rd, len);
1385         }
1386         return LDNS_WIREPARSE_ERR_OK;
1387 }
1388
1389 int sldns_str2wire_time_buf(const char* str, uint8_t* rd, size_t* len)
1390 {
1391         /* convert a time YYYYDDMMHHMMSS to wireformat */
1392         struct tm tm;
1393         if(*len < 4)
1394                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1395
1396         /* Try to scan the time... */
1397         memset(&tm, 0, sizeof(tm));
1398         if (strlen(str) == 14 && sscanf(str, "%4d%2d%2d%2d%2d%2d",
1399                 &tm.tm_year, &tm.tm_mon, &tm.tm_mday, &tm.tm_hour,
1400                 &tm.tm_min, &tm.tm_sec) == 6) {
1401                 tm.tm_year -= 1900;
1402                 tm.tm_mon--;
1403                 /* Check values */
1404                 if (tm.tm_year < 70)
1405                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1406                 if (tm.tm_mon < 0 || tm.tm_mon > 11)
1407                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1408                 if (tm.tm_mday < 1 || tm.tm_mday > 31)
1409                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1410                 if (tm.tm_hour < 0 || tm.tm_hour > 23)
1411                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1412                 if (tm.tm_min < 0 || tm.tm_min > 59)
1413                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1414                 if (tm.tm_sec < 0 || tm.tm_sec > 59)
1415                         return LDNS_WIREPARSE_ERR_SYNTAX_TIME;
1416
1417                 sldns_write_uint32(rd, (uint32_t)sldns_mktime_from_utc(&tm));
1418         } else {
1419                 /* handle it as 32 bits timestamp */
1420                 char *end;
1421                 uint32_t l = (uint32_t)strtol((char*)str, &end, 10);
1422                 if(*end != 0)
1423                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TIME,
1424                                 end-(char*)str);
1425                 sldns_write_uint32(rd, l);
1426         }
1427         *len = 4;
1428         return LDNS_WIREPARSE_ERR_OK;
1429 }
1430
1431 int sldns_str2wire_tsigtime_buf(const char* str, uint8_t* rd, size_t* len)
1432 {
1433         char* end;
1434         uint64_t t = (uint64_t)strtol((char*)str, &end, 10);
1435         uint16_t high;
1436         uint32_t low;
1437         if(*end != 0)
1438                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TIME, end-str);
1439         if(*len < 6)
1440                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1441         high = (uint16_t)(t>>32);
1442         low = (uint32_t)(t);
1443         sldns_write_uint16(rd, high);
1444         sldns_write_uint32(rd+2, low);
1445         *len = 6;
1446         return LDNS_WIREPARSE_ERR_OK;
1447 }
1448
1449 int sldns_str2wire_period_buf(const char* str, uint8_t* rd, size_t* len)
1450 {
1451         const char* end;
1452         uint32_t p = sldns_str2period(str, &end);
1453         if(*end != 0)
1454                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_PERIOD, end-str);
1455         if(*len < 4)
1456                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1457         sldns_write_uint32(rd, p);
1458         *len = 4;
1459         return LDNS_WIREPARSE_ERR_OK;
1460 }
1461
1462 /** read "<digits>[.<digits>][mM]" into mantissa exponent format for LOC type */
1463 static int
1464 loc_parse_cm(char* my_str, char** endstr, uint8_t* m, uint8_t* e)
1465 {
1466         uint32_t meters = 0, cm = 0, val;
1467         while (isblank((unsigned char)*my_str)) {
1468                 my_str++;
1469         }
1470         meters = (uint32_t)strtol(my_str, &my_str, 10);
1471         if (*my_str == '.') {
1472                 my_str++;
1473                 cm = (uint32_t)strtol(my_str, &my_str, 10);
1474         }
1475         if (meters >= 1) {
1476                 *e = 2;
1477                 val = meters;
1478         } else  {
1479                 *e = 0;
1480                 val = cm;
1481         }
1482         while(val >= 10) {
1483                 (*e)++;
1484                 val /= 10;
1485         }
1486         *m = (uint8_t)val;
1487
1488         if (*e > 9)
1489                 return 0;
1490         if (*my_str == 'm' || *my_str == 'M') {
1491                 my_str++;
1492         }
1493         *endstr = my_str;
1494         return 1;
1495 }
1496
1497 int sldns_str2wire_loc_buf(const char* str, uint8_t* rd, size_t* len)
1498 {
1499         uint32_t latitude = 0;
1500         uint32_t longitude = 0;
1501         uint32_t altitude = 0;
1502
1503         uint32_t equator = (uint32_t)1<<31; /* 2**31 */
1504
1505         /* only support version 0 */
1506         uint32_t h = 0;
1507         uint32_t m = 0;
1508         uint8_t size_b = 1, size_e = 2;
1509         uint8_t horiz_pre_b = 1, horiz_pre_e = 6;
1510         uint8_t vert_pre_b = 1, vert_pre_e = 3;
1511
1512         double s = 0.0;
1513         int northerness;
1514         int easterness;
1515
1516         char *my_str = (char *) str;
1517
1518         if (isdigit((unsigned char) *my_str)) {
1519                 h = (uint32_t) strtol(my_str, &my_str, 10);
1520         } else {
1521                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1522         }
1523
1524         while (isblank((unsigned char) *my_str)) {
1525                 my_str++;
1526         }
1527
1528         if (isdigit((unsigned char) *my_str)) {
1529                 m = (uint32_t) strtol(my_str, &my_str, 10);
1530         } else if (*my_str == 'N' || *my_str == 'S') {
1531                 goto north;
1532         } else {
1533                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1534         }
1535
1536         while (isblank((unsigned char) *my_str)) {
1537                 my_str++;
1538         }
1539
1540         if (isdigit((unsigned char) *my_str)) {
1541                 s = strtod(my_str, &my_str);
1542         }
1543
1544         /* skip blanks before norterness */
1545         while (isblank((unsigned char) *my_str)) {
1546                 my_str++;
1547         }
1548
1549 north:
1550         if (*my_str == 'N') {
1551                 northerness = 1;
1552         } else if (*my_str == 'S') {
1553                 northerness = 0;
1554         } else {
1555                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1556         }
1557
1558         my_str++;
1559
1560         /* store number */
1561         s = 1000.0 * s;
1562         /* add a little to make floor in conversion a round */
1563         s += 0.0005;
1564         latitude = (uint32_t) s;
1565         latitude += 1000 * 60 * m;
1566         latitude += 1000 * 60 * 60 * h;
1567         if (northerness) {
1568                 latitude = equator + latitude;
1569         } else {
1570                 latitude = equator - latitude;
1571         }
1572         while (isblank((unsigned char)*my_str)) {
1573                 my_str++;
1574         }
1575
1576         if (isdigit((unsigned char) *my_str)) {
1577                 h = (uint32_t) strtol(my_str, &my_str, 10);
1578         } else {
1579                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1580         }
1581
1582         while (isblank((unsigned char) *my_str)) {
1583                 my_str++;
1584         }
1585
1586         if (isdigit((unsigned char) *my_str)) {
1587                 m = (uint32_t) strtol(my_str, &my_str, 10);
1588         } else if (*my_str == 'E' || *my_str == 'W') {
1589                 goto east;
1590         } else {
1591                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1592         }
1593
1594         while (isblank((unsigned char)*my_str)) {
1595                 my_str++;
1596         }
1597
1598         if (isdigit((unsigned char) *my_str)) {
1599                 s = strtod(my_str, &my_str);
1600         }
1601
1602         /* skip blanks before easterness */
1603         while (isblank((unsigned char)*my_str)) {
1604                 my_str++;
1605         }
1606
1607 east:
1608         if (*my_str == 'E') {
1609                 easterness = 1;
1610         } else if (*my_str == 'W') {
1611                 easterness = 0;
1612         } else {
1613                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1614         }
1615
1616         my_str++;
1617
1618         /* store number */
1619         s *= 1000.0;
1620         /* add a little to make floor in conversion a round */
1621         s += 0.0005;
1622         longitude = (uint32_t) s;
1623         longitude += 1000 * 60 * m;
1624         longitude += 1000 * 60 * 60 * h;
1625
1626         if (easterness) {
1627                 longitude += equator;
1628         } else {
1629                 longitude = equator - longitude;
1630         }
1631
1632         altitude = (uint32_t)(strtod(my_str, &my_str)*100.0 +
1633                 10000000.0 + 0.5);
1634         if (*my_str == 'm' || *my_str == 'M') {
1635                 my_str++;
1636         }
1637
1638         if (strlen(my_str) > 0) {
1639                 if(!loc_parse_cm(my_str, &my_str, &size_b, &size_e))
1640                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1641         }
1642
1643         if (strlen(my_str) > 0) {
1644                 if(!loc_parse_cm(my_str, &my_str, &horiz_pre_b, &horiz_pre_e))
1645                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1646         }
1647
1648         if (strlen(my_str) > 0) {
1649                 if(!loc_parse_cm(my_str, &my_str, &vert_pre_b, &vert_pre_e))
1650                         return LDNS_WIREPARSE_ERR_INVALID_STR;
1651         }
1652
1653         if(*len < 16)
1654                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1655         rd[0] = 0;
1656         rd[1] = ((size_b << 4) & 0xf0) | (size_e & 0x0f);
1657         rd[2] = ((horiz_pre_b << 4) & 0xf0) | (horiz_pre_e & 0x0f);
1658         rd[3] = ((vert_pre_b << 4) & 0xf0) | (vert_pre_e & 0x0f);
1659         sldns_write_uint32(rd + 4, latitude);
1660         sldns_write_uint32(rd + 8, longitude);
1661         sldns_write_uint32(rd + 12, altitude);
1662         *len = 16;
1663         return LDNS_WIREPARSE_ERR_OK;
1664 }
1665
1666 static void
1667 ldns_tolower_str(char* s)
1668 {
1669         if(s) {
1670                 while(*s) {
1671                         *s = (char)tolower((unsigned char)*s);
1672                         s++;
1673                 }
1674         }
1675 }
1676
1677 int sldns_str2wire_wks_buf(const char* str, uint8_t* rd, size_t* len)
1678 {
1679         int rd_len = 1;
1680         int have_proto = 0;
1681         char token[50], proto_str[50];
1682         sldns_buffer strbuf;
1683         sldns_buffer_init_frm_data(&strbuf, (uint8_t*)str, strlen(str));
1684         proto_str[0]=0;
1685
1686         /* check we have one byte for proto */
1687         if(*len < 1)
1688                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1689
1690         while(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) > 0) {
1691                 ldns_tolower_str(token);
1692                 if(!have_proto) {
1693                         struct protoent *p = getprotobyname(token);
1694                         have_proto = 1;
1695                         if(p) rd[0] = (uint8_t)p->p_proto;
1696                         else if(strcasecmp(token, "tcp")==0) rd[0]=6;
1697                         else if(strcasecmp(token, "udp")==0) rd[0]=17;
1698                         else rd[0] = (uint8_t)atoi(token);
1699                         (void)strlcpy(proto_str, token, sizeof(proto_str));
1700                 } else {
1701                         int serv_port;
1702                         struct servent *serv = getservbyname(token, proto_str);
1703                         if(serv) serv_port=(int)ntohs((uint16_t)serv->s_port);
1704                         else if(strcasecmp(token, "domain")==0) serv_port=53;
1705                         else {
1706                                 serv_port = atoi(token);
1707                                 if(serv_port == 0 && strcmp(token, "0") != 0) {
1708 #ifdef HAVE_ENDSERVENT
1709                                         endservent();
1710 #endif
1711 #ifdef HAVE_ENDPROTOENT
1712                                         endprotoent();
1713 #endif
1714                                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX,
1715                                                 sldns_buffer_position(&strbuf));
1716                                 }
1717                                 if(serv_port < 0 || serv_port > 65535) {
1718 #ifdef HAVE_ENDSERVENT
1719                                         endservent();
1720 #endif
1721 #ifdef HAVE_ENDPROTOENT
1722                                         endprotoent();
1723 #endif
1724                                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX,
1725                                                 sldns_buffer_position(&strbuf));
1726                                 }
1727                         }
1728                         if(rd_len < 1+serv_port/8+1) {
1729                                 /* bitmap is larger, init new bytes at 0 */
1730                                 if(*len < 1+(size_t)serv_port/8+1) {
1731 #ifdef HAVE_ENDSERVENT
1732                                         endservent();
1733 #endif
1734 #ifdef HAVE_ENDPROTOENT
1735                                         endprotoent();
1736 #endif
1737                                         return RET_ERR(
1738                                         LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1739                                         sldns_buffer_position(&strbuf));
1740                                 }
1741                                 memset(rd+rd_len, 0, 1+(size_t)serv_port/8+1-rd_len);
1742                                 rd_len = 1+serv_port/8+1;
1743                         }
1744                         rd[1+ serv_port/8] |= (1 << (7 - serv_port % 8));
1745                 }
1746         }
1747         *len = (size_t)rd_len;
1748
1749 #ifdef HAVE_ENDSERVENT
1750         endservent();
1751 #endif
1752 #ifdef HAVE_ENDPROTOENT
1753         endprotoent();
1754 #endif
1755         return LDNS_WIREPARSE_ERR_OK;
1756 }
1757
1758 int sldns_str2wire_nsap_buf(const char* str, uint8_t* rd, size_t* len)
1759 {
1760         const char* s = str;
1761         size_t slen;
1762         size_t dlen = 0; /* number of hexdigits parsed */
1763
1764         /* just a hex string with optional dots? */
1765         if (s[0] != '0' || s[1] != 'x')
1766                 return LDNS_WIREPARSE_ERR_INVALID_STR;
1767         s += 2;
1768         slen = strlen(s);
1769         if(slen > LDNS_MAX_RDFLEN*2)
1770                 return LDNS_WIREPARSE_ERR_LABEL_OVERFLOW;
1771         while(*s) {
1772                 if(isspace((unsigned char)*s) || *s == '.') {
1773                         s++;
1774                         continue;
1775                 }
1776                 if(!isxdigit((unsigned char)*s))
1777                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1778                 if(*len < dlen/2 + 1)
1779                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1780                                 s-str);
1781                 if((dlen&1)==0)
1782                         rd[dlen/2] = (uint8_t)sldns_hexdigit_to_int(*s++) * 16;
1783                 else    rd[dlen/2] += sldns_hexdigit_to_int(*s++);
1784                 dlen++;
1785         }
1786         if((dlen&1)!=0)
1787                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1788         *len = dlen/2;
1789         return LDNS_WIREPARSE_ERR_OK;
1790 }
1791
1792 int sldns_str2wire_atma_buf(const char* str, uint8_t* rd, size_t* len)
1793 {
1794         const char* s = str;
1795         size_t slen = strlen(str);
1796         size_t dlen = 0; /* number of hexdigits parsed */
1797
1798         /* just a hex string with optional dots? */
1799         /* notimpl e.164 format */
1800         if(slen > LDNS_MAX_RDFLEN*2)
1801                 return LDNS_WIREPARSE_ERR_LABEL_OVERFLOW;
1802         while(*s) {
1803                 if(isspace((unsigned char)*s) || *s == '.') {
1804                         s++;
1805                         continue;
1806                 }
1807                 if(!isxdigit((unsigned char)*s))
1808                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1809                 if(*len < dlen/2 + 1)
1810                         return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1811                                 s-str);
1812                 if((dlen&1)==0)
1813                         rd[dlen/2] = (uint8_t)sldns_hexdigit_to_int(*s++) * 16;
1814                 else    rd[dlen/2] += sldns_hexdigit_to_int(*s++);
1815                 dlen++;
1816         }
1817         if((dlen&1)!=0)
1818                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, s-str);
1819         *len = dlen/2;
1820         return LDNS_WIREPARSE_ERR_OK;
1821 }
1822
1823 int sldns_str2wire_ipseckey_buf(const char* str, uint8_t* rd, size_t* len)
1824 {
1825         size_t gwlen = 0, keylen = 0;
1826         int s;
1827         uint8_t gwtype;
1828         char token[512];
1829         sldns_buffer strbuf;
1830         sldns_buffer_init_frm_data(&strbuf, (uint8_t*)str, strlen(str));
1831
1832         if(*len < 3)
1833                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1834         /* precedence */
1835         if(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) <= 0)
1836                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1837                         sldns_buffer_position(&strbuf));
1838         rd[0] = (uint8_t)atoi(token);
1839         /* gateway_type */
1840         if(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) <= 0)
1841                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1842                         sldns_buffer_position(&strbuf));
1843         rd[1] = (uint8_t)atoi(token);
1844         gwtype = rd[1];
1845         /* algorithm */
1846         if(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) <= 0)
1847                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1848                         sldns_buffer_position(&strbuf));
1849         rd[2] = (uint8_t)atoi(token);
1850
1851         /* gateway */
1852         if(sldns_bget_token(&strbuf, token, "\t\n ", sizeof(token)) <= 0)
1853                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1854                         sldns_buffer_position(&strbuf));
1855         if(gwtype == 0) {
1856                 /* NOGATEWAY */
1857                 if(strcmp(token, ".") != 0)
1858                         return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1859                                 sldns_buffer_position(&strbuf));
1860                 gwlen = 0;
1861         } else if(gwtype == 1) {
1862                 /* IP4 */
1863                 gwlen = *len - 3;
1864                 s = sldns_str2wire_a_buf(token, rd+3, &gwlen);
1865                 if(s) return RET_ERR_SHIFT(s, sldns_buffer_position(&strbuf));
1866         } else if(gwtype == 2) {
1867                 /* IP6 */
1868                 gwlen = *len - 3;
1869                 s = sldns_str2wire_aaaa_buf(token, rd+3, &gwlen);
1870                 if(s) return RET_ERR_SHIFT(s, sldns_buffer_position(&strbuf));
1871         } else if(gwtype == 3) {
1872                 /* DNAME */
1873                 gwlen = *len - 3;
1874                 s = sldns_str2wire_dname_buf(token, rd+3, &gwlen);
1875                 if(s) return RET_ERR_SHIFT(s, sldns_buffer_position(&strbuf));
1876         } else {
1877                 /* unknown gateway type */
1878                 return RET_ERR(LDNS_WIREPARSE_ERR_INVALID_STR,
1879                         sldns_buffer_position(&strbuf));
1880         }
1881         /* double check for size */
1882         if(*len < 3 + gwlen)
1883                 return RET_ERR(LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL,
1884                         sldns_buffer_position(&strbuf));
1885
1886         /* publickey in remainder of strbuf */
1887         keylen = *len - 3 - gwlen;
1888         s = sldns_str2wire_b64_buf((const char*)sldns_buffer_current(&strbuf),
1889                 rd+3+gwlen, &keylen);
1890         if(s) return RET_ERR_SHIFT(s, sldns_buffer_position(&strbuf));
1891
1892         *len = 3 + gwlen + keylen;
1893         return LDNS_WIREPARSE_ERR_OK;
1894 }
1895
1896 int sldns_str2wire_nsec3_salt_buf(const char* str, uint8_t* rd, size_t* len)
1897 {
1898         int i, salt_length_str = (int)strlen(str);
1899         if (salt_length_str == 1 && str[0] == '-') {
1900                 salt_length_str = 0;
1901         } else if (salt_length_str % 2 != 0) {
1902                 return LDNS_WIREPARSE_ERR_SYNTAX_HEX;
1903         }
1904         if (salt_length_str > 512)
1905                 return LDNS_WIREPARSE_ERR_SYNTAX_HEX;
1906         if(*len < 1+(size_t)salt_length_str / 2)
1907                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1908         rd[0] = (uint8_t) (salt_length_str / 2);
1909         for (i = 0; i < salt_length_str; i += 2) {
1910                 if (isxdigit((unsigned char)str[i]) &&
1911                         isxdigit((unsigned char)str[i+1])) {
1912                         rd[1+i/2] = (uint8_t)(sldns_hexdigit_to_int(str[i])*16
1913                                 + sldns_hexdigit_to_int(str[i+1]));
1914                 } else {
1915                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_HEX, i);
1916                 }
1917         }
1918         *len = 1 + (size_t)rd[0];
1919         return LDNS_WIREPARSE_ERR_OK;
1920 }
1921
1922 int sldns_str2wire_ilnp64_buf(const char* str, uint8_t* rd, size_t* len)
1923 {
1924         unsigned int a, b, c, d;
1925         uint16_t shorts[4];
1926         int l;
1927         if(*len < sizeof(shorts))
1928                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1929
1930         if (sscanf(str, "%4x:%4x:%4x:%4x%n", &a, &b, &c, &d, &l) != 4 ||
1931                         l != (int)strlen(str) || /* more data to read */
1932                         strpbrk(str, "+-")       /* signed hexes */
1933                         )
1934                 return LDNS_WIREPARSE_ERR_SYNTAX_ILNP64;
1935         shorts[0] = htons(a);
1936         shorts[1] = htons(b);
1937         shorts[2] = htons(c);
1938         shorts[3] = htons(d);
1939         memmove(rd, &shorts, sizeof(shorts));
1940         *len = sizeof(shorts);
1941         return LDNS_WIREPARSE_ERR_OK;
1942 }
1943
1944 int sldns_str2wire_eui48_buf(const char* str, uint8_t* rd, size_t* len)
1945 {
1946         unsigned int a, b, c, d, e, f;
1947         int l;
1948
1949         if(*len < 6)
1950                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1951         if (sscanf(str, "%2x-%2x-%2x-%2x-%2x-%2x%n",
1952                         &a, &b, &c, &d, &e, &f, &l) != 6 ||
1953                         l != (int)strlen(str))
1954                 return LDNS_WIREPARSE_ERR_SYNTAX_EUI48;
1955         rd[0] = a;
1956         rd[1] = b;
1957         rd[2] = c;
1958         rd[3] = d;
1959         rd[4] = e;
1960         rd[5] = f;
1961         *len = 6;
1962         return LDNS_WIREPARSE_ERR_OK;
1963 }
1964
1965 int sldns_str2wire_eui64_buf(const char* str, uint8_t* rd, size_t* len)
1966 {
1967         unsigned int a, b, c, d, e, f, g, h;
1968         int l;
1969
1970         if(*len < 8)
1971                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1972         if (sscanf(str, "%2x-%2x-%2x-%2x-%2x-%2x-%2x-%2x%n",
1973                         &a, &b, &c, &d, &e, &f, &g, &h, &l) != 8 ||
1974                         l != (int)strlen(str))
1975                 return LDNS_WIREPARSE_ERR_SYNTAX_EUI64;
1976         rd[0] = a;
1977         rd[1] = b;
1978         rd[2] = c;
1979         rd[3] = d;
1980         rd[4] = e;
1981         rd[5] = f;
1982         rd[6] = g;
1983         rd[7] = h;
1984         *len = 8;
1985         return LDNS_WIREPARSE_ERR_OK;
1986 }
1987
1988 int sldns_str2wire_tag_buf(const char* str, uint8_t* rd, size_t* len)
1989 {
1990         size_t slen = strlen(str);
1991         const char* ptr;
1992
1993         if (slen > 255)
1994                 return LDNS_WIREPARSE_ERR_SYNTAX_TAG;
1995         if(*len < slen+1)
1996                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
1997         for (ptr = str; *ptr; ptr++) {
1998                 if(!isalnum((unsigned char)*ptr))
1999                         return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_TAG, ptr-str);
2000         }
2001         rd[0] = (uint8_t)slen;
2002         memmove(rd+1, str, slen);
2003         *len = slen+1;
2004         return LDNS_WIREPARSE_ERR_OK;
2005 }
2006
2007 int sldns_str2wire_long_str_buf(const char* str, uint8_t* rd, size_t* len)
2008 {
2009         uint8_t ch = 0;
2010         const char* pstr = str;
2011         size_t length = 0;
2012
2013         /* Fill data with parsed bytes */
2014         while (sldns_parse_char(&ch, &pstr)) {
2015                 if(*len < length+1)
2016                         return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
2017                 rd[length++] = ch;
2018         }
2019         if(!pstr)
2020                 return LDNS_WIREPARSE_ERR_SYNTAX_BAD_ESCAPE;
2021         *len = length;
2022         return LDNS_WIREPARSE_ERR_OK;
2023 }
2024
2025 int sldns_str2wire_hip_buf(const char* str, uint8_t* rd, size_t* len)
2026 {
2027         char* s, *end;
2028         int e;
2029         size_t hitlen, pklen = 0;
2030         /* presentation format:
2031          *      pk-algo HIThex pubkeybase64
2032          * wireformat:
2033          *      hitlen[1byte] pkalgo[1byte] pubkeylen[2byte] [hit] [pubkey] */
2034         if(*len < 4)
2035                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
2036
2037         /* read PK algorithm */
2038         rd[1] = (uint8_t)strtol((char*)str, &s, 10);
2039         if(*s != ' ')
2040                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_INT, s-(char*)str);
2041         s++;
2042         while(*s == ' ')
2043                 s++;
2044
2045         /* read HIT hex tag */
2046         /* zero terminate the tag (replace later) */
2047         end = strchr(s, ' ');
2048         if(!end) return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX, s-(char*)str);
2049         *end = 0;
2050         hitlen = *len - 4;
2051         if((e = sldns_str2wire_hex_buf(s, rd+4, &hitlen)) != 0) {
2052                 *end = ' ';
2053                 return RET_ERR_SHIFT(e, s-(char*)str);
2054         }
2055         if(hitlen > 255) {
2056                 *end = ' ';
2057                 return RET_ERR(LDNS_WIREPARSE_ERR_LABEL_OVERFLOW, s-(char*)str+255*2);
2058         }
2059         rd[0] = (uint8_t)hitlen;
2060         *end = ' ';
2061         s = end+1;
2062
2063         /* read pubkey base64 sequence */
2064         pklen = *len - 4 - hitlen;
2065         if((e = sldns_str2wire_b64_buf(s, rd+4+hitlen, &pklen)) != 0)
2066                 return RET_ERR_SHIFT(e, s-(char*)str);
2067         if(pklen > 65535)
2068                 return RET_ERR(LDNS_WIREPARSE_ERR_LABEL_OVERFLOW, s-(char*)str+65535);
2069         sldns_write_uint16(rd+2, (uint16_t)pklen);
2070
2071         *len = 4 + hitlen + pklen;
2072         return LDNS_WIREPARSE_ERR_OK;
2073 }
2074
2075 int sldns_str2wire_int16_data_buf(const char* str, uint8_t* rd, size_t* len)
2076 {
2077         char* s;
2078         int n;
2079         n = strtol(str, &s, 10);
2080         if(*len < ((size_t)n)+2)
2081                 return LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL;
2082         if(n > 65535)
2083                 return LDNS_WIREPARSE_ERR_LABEL_OVERFLOW;
2084
2085         if(n == 0) {
2086                 sldns_write_uint16(rd, 0);
2087                 *len = 2;
2088                 return LDNS_WIREPARSE_ERR_OK;
2089         }
2090         if(*s != ' ')
2091                 return RET_ERR(LDNS_WIREPARSE_ERR_SYNTAX_INT, s-(char*)str);
2092         s++;
2093         while(*s == ' ')
2094                 s++;
2095
2096         n = sldns_b64_pton(s, rd+2, (*len)-2);
2097         if(n < 0)
2098                 return LDNS_WIREPARSE_ERR_SYNTAX_B64;
2099         sldns_write_uint16(rd, (uint16_t)n);
2100         *len = ((size_t)n)+2;
2101         return LDNS_WIREPARSE_ERR_OK;
2102 }