rdata.c
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1 /*
2  * rdata.c
3  *
4  * rdata implementation
5  *
6  * a Net::DNS like library for C
7  *
8  * (c) NLnet Labs, 2004-2006
9  *
10  * See the file LICENSE for the license
11  */
12 
13 #include <ldns/config.h>
14 
15 #include <ldns/ldns.h>
16 
17 /*
18  * Access functions
19  * do this as functions to get type checking
20  */
21 
22 /* read */
23 size_t
24 ldns_rdf_size(const ldns_rdf *rd)
25 {
26  assert(rd != NULL);
27  return rd->_size;
28 }
29 
30 ldns_rdf_type
31 ldns_rdf_get_type(const ldns_rdf *rd)
32 {
33  assert(rd != NULL);
34  return rd->_type;
35 }
36 
37 uint8_t *
38 ldns_rdf_data(const ldns_rdf *rd)
39 {
40  assert(rd != NULL);
41  return rd->_data;
42 }
43 
44 /* write */
45 void
46 ldns_rdf_set_size(ldns_rdf *rd, size_t size)
47 {
48  assert(rd != NULL);
49  rd->_size = size;
50 }
51 
52 void
53 ldns_rdf_set_type(ldns_rdf *rd, ldns_rdf_type type)
54 {
55  assert(rd != NULL);
56  rd->_type = type;
57 }
58 
59 void
60 ldns_rdf_set_data(ldns_rdf *rd, void *data)
61 {
62  /* only copy the pointer */
63  assert(rd != NULL);
64  rd->_data = data;
65 }
66 
67 /* for types that allow it, return
68  * the native/host order type */
69 uint8_t
70 ldns_rdf2native_int8(const ldns_rdf *rd)
71 {
72  uint8_t data;
73 
74  /* only allow 8 bit rdfs */
75  if (ldns_rdf_size(rd) != LDNS_RDF_SIZE_BYTE) {
76  return 0;
77  }
78 
79  memcpy(&data, ldns_rdf_data(rd), sizeof(data));
80  return data;
81 }
82 
83 uint16_t
84 ldns_rdf2native_int16(const ldns_rdf *rd)
85 {
86  uint16_t data;
87 
88  /* only allow 16 bit rdfs */
89  if (ldns_rdf_size(rd) != LDNS_RDF_SIZE_WORD) {
90  return 0;
91  }
92 
93  memcpy(&data, ldns_rdf_data(rd), sizeof(data));
94  return ntohs(data);
95 }
96 
97 uint32_t
98 ldns_rdf2native_int32(const ldns_rdf *rd)
99 {
100  uint32_t data;
101 
102  /* only allow 32 bit rdfs */
103  if (ldns_rdf_size(rd) != LDNS_RDF_SIZE_DOUBLEWORD) {
104  return 0;
105  }
106 
107  memcpy(&data, ldns_rdf_data(rd), sizeof(data));
108  return ntohl(data);
109 }
110 
111 time_t
112 ldns_rdf2native_time_t(const ldns_rdf *rd)
113 {
114  uint32_t data;
115 
116  /* only allow 32 bit rdfs */
117  if (ldns_rdf_size(rd) != LDNS_RDF_SIZE_DOUBLEWORD ||
118  ldns_rdf_get_type(rd) != LDNS_RDF_TYPE_TIME) {
119  return 0;
120  }
121  memcpy(&data, ldns_rdf_data(rd), sizeof(data));
122  return (time_t)ntohl(data);
123 }
124 
125 ldns_rdf *
126 ldns_native2rdf_int8(ldns_rdf_type type, uint8_t value)
127 {
128  return ldns_rdf_new_frm_data(type, LDNS_RDF_SIZE_BYTE, &value);
129 }
130 
131 ldns_rdf *
132 ldns_native2rdf_int16(ldns_rdf_type type, uint16_t value)
133 {
134  uint16_t *rdf_data = LDNS_XMALLOC(uint16_t, 1);
135  ldns_rdf* rdf;
136  if (!rdf_data) {
137  return NULL;
138  }
139  ldns_write_uint16(rdf_data, value);
140  rdf = ldns_rdf_new(type, LDNS_RDF_SIZE_WORD, rdf_data);
141  if(!rdf)
142  LDNS_FREE(rdf_data);
143  return rdf;
144 }
145 
146 ldns_rdf *
147 ldns_native2rdf_int32(ldns_rdf_type type, uint32_t value)
148 {
149  uint32_t *rdf_data = LDNS_XMALLOC(uint32_t, 1);
150  ldns_rdf* rdf;
151  if (!rdf_data) {
152  return NULL;
153  }
154  ldns_write_uint32(rdf_data, value);
155  rdf = ldns_rdf_new(type, LDNS_RDF_SIZE_DOUBLEWORD, rdf_data);
156  if(!rdf)
157  LDNS_FREE(rdf_data);
158  return rdf;
159 }
160 
161 ldns_rdf *
162 ldns_native2rdf_int16_data(size_t size, uint8_t *data)
163 {
164  uint8_t *rdf_data = LDNS_XMALLOC(uint8_t, size + 2);
165  ldns_rdf* rdf;
166  if (!rdf_data) {
167  return NULL;
168  }
169  ldns_write_uint16(rdf_data, size);
170  memcpy(rdf_data + 2, data, size);
171  rdf = ldns_rdf_new(LDNS_RDF_TYPE_INT16_DATA, size + 2, rdf_data);
172  if(!rdf)
173  LDNS_FREE(rdf_data);
174  return rdf;
175 }
176 
177 /* note: data must be allocated memory */
178 ldns_rdf *
179 ldns_rdf_new(ldns_rdf_type type, size_t size, void *data)
180 {
181  ldns_rdf *rd;
182  rd = LDNS_MALLOC(ldns_rdf);
183  if (!rd) {
184  return NULL;
185  }
186  ldns_rdf_set_size(rd, size);
187  ldns_rdf_set_type(rd, type);
188  ldns_rdf_set_data(rd, data);
189  return rd;
190 }
191 
192 ldns_rdf *
193 ldns_rdf_new_frm_data(ldns_rdf_type type, size_t size, const void *data)
194 {
195  ldns_rdf *rdf;
196 
197  /* if the size is too big, fail */
198  if (size > LDNS_MAX_RDFLEN) {
199  return NULL;
200  }
201 
202  /* allocate space */
203  rdf = LDNS_MALLOC(ldns_rdf);
204  if (!rdf) {
205  return NULL;
206  }
207  rdf->_data = LDNS_XMALLOC(uint8_t, size);
208  if (!rdf->_data) {
209  LDNS_FREE(rdf);
210  return NULL;
211  }
212 
213  /* set the values */
214  ldns_rdf_set_type(rdf, type);
215  ldns_rdf_set_size(rdf, size);
216  memcpy(rdf->_data, data, size);
217 
218  return rdf;
219 }
220 
221 ldns_rdf *
222 ldns_rdf_clone(const ldns_rdf *rd)
223 {
224  assert(rd != NULL);
225  return (ldns_rdf_new_frm_data( ldns_rdf_get_type(rd),
226  ldns_rdf_size(rd), ldns_rdf_data(rd)));
227 }
228 
229 void
230 ldns_rdf_deep_free(ldns_rdf *rd)
231 {
232  if (rd) {
233  if (rd->_data) {
234  LDNS_FREE(rd->_data);
235  }
236  LDNS_FREE(rd);
237  }
238 }
239 
240 void
241 ldns_rdf_free(ldns_rdf *rd)
242 {
243  if (rd) {
244  LDNS_FREE(rd);
245  }
246 }
247 
248 ldns_rdf *
249 ldns_rdf_new_frm_str(ldns_rdf_type type, const char *str)
250 {
251  ldns_rdf *rdf = NULL;
252  ldns_status status;
253 
254  switch (type) {
255  case LDNS_RDF_TYPE_DNAME:
256  status = ldns_str2rdf_dname(&rdf, str);
257  break;
258  case LDNS_RDF_TYPE_INT8:
259  status = ldns_str2rdf_int8(&rdf, str);
260  break;
261  case LDNS_RDF_TYPE_INT16:
262  status = ldns_str2rdf_int16(&rdf, str);
263  break;
264  case LDNS_RDF_TYPE_INT32:
265  status = ldns_str2rdf_int32(&rdf, str);
266  break;
267  case LDNS_RDF_TYPE_A:
268  status = ldns_str2rdf_a(&rdf, str);
269  break;
270  case LDNS_RDF_TYPE_AAAA:
271  status = ldns_str2rdf_aaaa(&rdf, str);
272  break;
273  case LDNS_RDF_TYPE_STR:
274  status = ldns_str2rdf_str(&rdf, str);
275  break;
276  case LDNS_RDF_TYPE_APL:
277  status = ldns_str2rdf_apl(&rdf, str);
278  break;
279  case LDNS_RDF_TYPE_B64:
280  status = ldns_str2rdf_b64(&rdf, str);
281  break;
282  case LDNS_RDF_TYPE_B32_EXT:
283  status = ldns_str2rdf_b32_ext(&rdf, str);
284  break;
285  case LDNS_RDF_TYPE_HEX:
286  status = ldns_str2rdf_hex(&rdf, str);
287  break;
288  case LDNS_RDF_TYPE_NSEC:
289  status = ldns_str2rdf_nsec(&rdf, str);
290  break;
291  case LDNS_RDF_TYPE_TYPE:
292  status = ldns_str2rdf_type(&rdf, str);
293  break;
294  case LDNS_RDF_TYPE_CLASS:
295  status = ldns_str2rdf_class(&rdf, str);
296  break;
297  case LDNS_RDF_TYPE_CERT_ALG:
298  status = ldns_str2rdf_cert_alg(&rdf, str);
299  break;
300  case LDNS_RDF_TYPE_ALG:
301  status = ldns_str2rdf_alg(&rdf, str);
302  break;
303  case LDNS_RDF_TYPE_UNKNOWN:
304  status = ldns_str2rdf_unknown(&rdf, str);
305  break;
306  case LDNS_RDF_TYPE_TIME:
307  status = ldns_str2rdf_time(&rdf, str);
308  break;
309  case LDNS_RDF_TYPE_PERIOD:
310  status = ldns_str2rdf_period(&rdf, str);
311  break;
312  case LDNS_RDF_TYPE_HIP:
313  status = ldns_str2rdf_hip(&rdf, str);
314  break;
315  case LDNS_RDF_TYPE_SERVICE:
316  status = ldns_str2rdf_service(&rdf, str);
317  break;
318  case LDNS_RDF_TYPE_LOC:
319  status = ldns_str2rdf_loc(&rdf, str);
320  break;
321  case LDNS_RDF_TYPE_WKS:
322  status = ldns_str2rdf_wks(&rdf, str);
323  break;
324  case LDNS_RDF_TYPE_NSAP:
325  status = ldns_str2rdf_nsap(&rdf, str);
326  break;
327  case LDNS_RDF_TYPE_ATMA:
328  status = ldns_str2rdf_atma(&rdf, str);
329  break;
330  case LDNS_RDF_TYPE_IPSECKEY:
331  status = ldns_str2rdf_ipseckey(&rdf, str);
332  break;
333  case LDNS_RDF_TYPE_NSEC3_SALT:
334  status = ldns_str2rdf_nsec3_salt(&rdf, str);
335  break;
336  case LDNS_RDF_TYPE_NSEC3_NEXT_OWNER:
337  status = ldns_str2rdf_b32_ext(&rdf, str);
338  break;
339  case LDNS_RDF_TYPE_ILNP64:
340  status = ldns_str2rdf_ilnp64(&rdf, str);
341  break;
342  case LDNS_RDF_TYPE_EUI48:
343  status = ldns_str2rdf_eui48(&rdf, str);
344  break;
345  case LDNS_RDF_TYPE_EUI64:
346  status = ldns_str2rdf_eui64(&rdf, str);
347  break;
348  case LDNS_RDF_TYPE_TAG:
349  status = ldns_str2rdf_tag(&rdf, str);
350  break;
351  case LDNS_RDF_TYPE_LONG_STR:
352  status = ldns_str2rdf_long_str(&rdf, str);
353  break;
354  case LDNS_RDF_TYPE_CERTIFICATE_USAGE:
355  status = ldns_str2rdf_certificate_usage(&rdf, str);
356  break;
357  case LDNS_RDF_TYPE_SELECTOR:
358  status = ldns_str2rdf_selector(&rdf, str);
359  break;
360  case LDNS_RDF_TYPE_MATCHING_TYPE:
361  status = ldns_str2rdf_matching_type(&rdf, str);
362  break;
363  case LDNS_RDF_TYPE_AMTRELAY:
364  status = ldns_str2rdf_amtrelay(&rdf, str);
365  break;
366  case LDNS_RDF_TYPE_SVCPARAMS:
367  status = ldns_str2rdf_svcparams(&rdf, str);
368  break;
369  case LDNS_RDF_TYPE_NONE:
370  default:
371  /* default default ??? */
372  status = LDNS_STATUS_ERR;
373  break;
374  }
375  if (LDNS_STATUS_OK == status) {
376  ldns_rdf_set_type(rdf, type);
377  return rdf;
378  }
379  if (rdf) {
380  LDNS_FREE(rdf);
381  }
382  return NULL;
383 }
384 
385 ldns_status
386 ldns_rdf_new_frm_fp(ldns_rdf **rdf, ldns_rdf_type type, FILE *fp)
387 {
388  return ldns_rdf_new_frm_fp_l(rdf, type, fp, NULL);
389 }
390 
391 ldns_status
392 ldns_rdf_new_frm_fp_l(ldns_rdf **rdf, ldns_rdf_type type, FILE *fp, int *line_nr)
393 {
394  char *line;
395  ldns_rdf *r;
396  ssize_t t;
397 
398  line = LDNS_XMALLOC(char, LDNS_MAX_LINELEN + 1);
399  if (!line) {
400  return LDNS_STATUS_MEM_ERR;
401  }
402 
403  /* read an entire line in from the file */
404  if ((t = ldns_fget_token_l(fp, line, LDNS_PARSE_SKIP_SPACE, 0, line_nr)) == -1 || t == 0) {
405  LDNS_FREE(line);
406  return LDNS_STATUS_SYNTAX_RDATA_ERR;
407  }
408  r = ldns_rdf_new_frm_str(type, (const char*) line);
409  LDNS_FREE(line);
410  if (rdf) {
411  *rdf = r;
412  return LDNS_STATUS_OK;
413  } else {
414  return LDNS_STATUS_NULL;
415  }
416 }
417 
418 ldns_rdf *
419 ldns_rdf_address_reverse(const ldns_rdf *rd)
420 {
421  uint8_t buf_4[LDNS_IP4ADDRLEN];
422  uint8_t buf_6[LDNS_IP6ADDRLEN * 2];
423  ldns_rdf *rev;
424  ldns_rdf *in_addr;
425  ldns_rdf *ret_dname;
426  uint8_t octet;
427  uint8_t nnibble;
428  uint8_t nibble;
429  uint8_t i, j;
430 
431  char *char_dname;
432  int nbit;
433 
434  if (ldns_rdf_get_type(rd) != LDNS_RDF_TYPE_A &&
435  ldns_rdf_get_type(rd) != LDNS_RDF_TYPE_AAAA) {
436  return NULL;
437  }
438 
439  in_addr = NULL;
440  ret_dname = NULL;
441 
442  switch(ldns_rdf_get_type(rd)) {
443  case LDNS_RDF_TYPE_A:
444  /* the length of the buffer is 4 */
445  buf_4[3] = ldns_rdf_data(rd)[0];
446  buf_4[2] = ldns_rdf_data(rd)[1];
447  buf_4[1] = ldns_rdf_data(rd)[2];
448  buf_4[0] = ldns_rdf_data(rd)[3];
449  in_addr = ldns_dname_new_frm_str("in-addr.arpa.");
450  if (!in_addr) {
451  return NULL;
452  }
453  /* make a new rdf and convert that back */
454  rev = ldns_rdf_new_frm_data( LDNS_RDF_TYPE_A,
455  LDNS_IP4ADDRLEN, (void*)&buf_4);
456  if (!rev) {
457  LDNS_FREE(in_addr);
458  return NULL;
459  }
460 
461  /* convert rev to a string */
462  char_dname = ldns_rdf2str(rev);
463  if (!char_dname) {
464  LDNS_FREE(in_addr);
465  ldns_rdf_deep_free(rev);
466  return NULL;
467  }
468  /* transform back to rdf with type dname */
469  ret_dname = ldns_dname_new_frm_str(char_dname);
470  if (!ret_dname) {
471  LDNS_FREE(in_addr);
472  ldns_rdf_deep_free(rev);
473  LDNS_FREE(char_dname);
474  return NULL;
475  }
476  /* not needed anymore */
477  ldns_rdf_deep_free(rev);
478  LDNS_FREE(char_dname);
479  break;
480  case LDNS_RDF_TYPE_AAAA:
481  /* some foo magic to reverse the nibbles ... */
482 
483  for (nbit = 127; nbit >= 0; nbit = nbit - 4) {
484  /* calculate octet (8 bit) */
485  octet = ( ((unsigned int) nbit) & 0x78) >> 3;
486  /* calculate nibble */
487  nnibble = ( ((unsigned int) nbit) & 0x04) >> 2;
488  /* extract nibble */
489  nibble = (ldns_rdf_data(rd)[octet] & ( 0xf << (4 * (1 -
490  nnibble)) ) ) >> ( 4 * (1 -
491  nnibble));
492 
493  buf_6[(LDNS_IP6ADDRLEN * 2 - 1) -
494  (octet * 2 + nnibble)] =
495  (uint8_t)ldns_int_to_hexdigit((int)nibble);
496  }
497 
498  char_dname = LDNS_XMALLOC(char, (LDNS_IP6ADDRLEN * 4));
499  if (!char_dname) {
500  return NULL;
501  }
502  char_dname[LDNS_IP6ADDRLEN * 4 - 1] = '\0'; /* closure */
503 
504  /* walk the string and add . 's */
505  for (i = 0, j = 0; i < LDNS_IP6ADDRLEN * 2; i++, j = j + 2) {
506  char_dname[j] = (char)buf_6[i];
507  if (i != LDNS_IP6ADDRLEN * 2 - 1) {
508  char_dname[j + 1] = '.';
509  }
510  }
511  in_addr = ldns_dname_new_frm_str("ip6.arpa.");
512  if (!in_addr) {
513  LDNS_FREE(char_dname);
514  return NULL;
515  }
516 
517  /* convert rev to a string */
518  ret_dname = ldns_dname_new_frm_str(char_dname);
519  LDNS_FREE(char_dname);
520  if (!ret_dname) {
521  ldns_rdf_deep_free(in_addr);
522  return NULL;
523  }
524  break;
525  default:
526  break;
527  }
528  /* add the suffix */
529  rev = ldns_dname_cat_clone(ret_dname, in_addr);
530 
531  ldns_rdf_deep_free(ret_dname);
532  ldns_rdf_deep_free(in_addr);
533  return rev;
534 }
535 
536 ldns_status
537 ldns_rdf_hip_get_alg_hit_pk(ldns_rdf *rdf, uint8_t* alg,
538  uint8_t *hit_size, uint8_t** hit,
539  uint16_t *pk_size, uint8_t** pk)
540 {
541  uint8_t *data;
542  size_t rdf_size;
543 
544  if (! rdf || ! alg || ! hit || ! hit_size || ! pk || ! pk_size) {
545  return LDNS_STATUS_INVALID_POINTER;
546  } else if (ldns_rdf_get_type(rdf) != LDNS_RDF_TYPE_HIP) {
547  return LDNS_STATUS_INVALID_RDF_TYPE;
548  } else if ((rdf_size = ldns_rdf_size(rdf)) < 6) {
549  return LDNS_STATUS_WIRE_RDATA_ERR;
550  }
551  data = ldns_rdf_data(rdf);
552  *hit_size = data[0];
553  *alg = data[1];
554  *pk_size = ldns_read_uint16(data + 2);
555  *hit = data + 4;
556  *pk = data + 4 + *hit_size;
557  if (*hit_size == 0 || *pk_size == 0 ||
558  rdf_size < (size_t) *hit_size + *pk_size + 4) {
559  return LDNS_STATUS_WIRE_RDATA_ERR;
560  }
561  return LDNS_STATUS_OK;
562 }
563 
564 ldns_status
565 ldns_rdf_hip_new_frm_alg_hit_pk(ldns_rdf** rdf, uint8_t alg,
566  uint8_t hit_size, uint8_t *hit,
567  uint16_t pk_size, uint8_t *pk)
568 {
569  uint8_t *data;
570 
571  if (! rdf) {
572  return LDNS_STATUS_INVALID_POINTER;
573  }
574  if (4 + hit_size + pk_size > LDNS_MAX_RDFLEN) {
575  return LDNS_STATUS_RDATA_OVERFLOW;
576  }
577  data = LDNS_XMALLOC(uint8_t, 4 + hit_size + pk_size);
578  if (data == NULL) {
579  return LDNS_STATUS_MEM_ERR;
580  }
581  data[0] = hit_size;
582  data[1] = alg;
583  ldns_write_uint16(data + 2, pk_size);
584  memcpy(data + 4, hit, hit_size);
585  memcpy(data + 4 + hit_size, pk, pk_size);
586  *rdf = ldns_rdf_new(LDNS_RDF_TYPE_HIP, 4 + hit_size + pk_size, data);
587  if (! *rdf) {
588  LDNS_FREE(data);
589  return LDNS_STATUS_MEM_ERR;
590  }
591  return LDNS_STATUS_OK;
592 }
593 
594 ldns_status
595 ldns_octet(char *word, size_t *length)
596 {
597  char *s;
598  char *p;
599  *length = 0;
600 
601  for (s = p = word; *s != '\0'; s++,p++) {
602  switch (*s) {
603  case '.':
604  if (s[1] == '.') {
605  return LDNS_STATUS_EMPTY_LABEL;
606  }
607  *p = *s;
608  (*length)++;
609  break;
610  case '\\':
611  if ('0' <= s[1] && s[1] <= '9' &&
612  '0' <= s[2] && s[2] <= '9' &&
613  '0' <= s[3] && s[3] <= '9') {
614  /* \DDD seen */
615  int val = ((s[1] - '0') * 100 +
616  (s[2] - '0') * 10 + (s[3] - '0'));
617 
618  if (0 <= val && val <= 255) {
619  /* this also handles \0 */
620  s += 3;
621  *p = val;
622  (*length)++;
623  } else {
624  return LDNS_STATUS_DDD_OVERFLOW;
625  }
626  } else {
627  /* an escaped character, like <space> ?
628  * remove the '\' keep the rest */
629  *p = *++s;
630  (*length)++;
631  }
632  break;
633  case '\"':
634  /* non quoted " Is either first or the last character in
635  * the string */
636 
637  *p = *++s; /* skip it */
638  (*length)++;
639  /* I'm not sure if this is needed in libdns... MG */
640  if ( *s == '\0' ) {
641  /* ok, it was the last one */
642  *p = '\0';
643  return LDNS_STATUS_OK;
644  }
645  break;
646  default:
647  *p = *s;
648  (*length)++;
649  break;
650  }
651  }
652  *p = '\0';
653  return LDNS_STATUS_OK;
654 }
655 
656 int
657 ldns_rdf_compare(const ldns_rdf *rd1, const ldns_rdf *rd2)
658 {
659  uint16_t i1, i2, i;
660  uint8_t *d1, *d2;
661 
662  /* only when both are not NULL we can say anything about them */
663  if (!rd1 && !rd2) {
664  return 0;
665  }
666  if (!rd1 || !rd2) {
667  return -1;
668  }
669  i1 = ldns_rdf_size(rd1);
670  i2 = ldns_rdf_size(rd2);
671 
672  if (i1 < i2) {
673  return -1;
674  } else if (i1 > i2) {
675  return +1;
676  } else {
677  d1 = (uint8_t*)ldns_rdf_data(rd1);
678  d2 = (uint8_t*)ldns_rdf_data(rd2);
679  for(i = 0; i < i1; i++) {
680  if (d1[i] < d2[i]) {
681  return -1;
682  } else if (d1[i] > d2[i]) {
683  return +1;
684  }
685  }
686  }
687  return 0;
688 }
689 
690 uint32_t
691 ldns_str2period(const char *nptr, const char **endptr)
692 {
693  int sign = 0;
694  uint32_t i = 0;
695  uint32_t seconds = 0;
696 
697  for(*endptr = nptr; **endptr; (*endptr)++) {
698  switch (**endptr) {
699  case ' ':
700  case '\t':
701  break;
702  case '-':
703  if(sign == 0) {
704  sign = -1;
705  } else {
706  return seconds;
707  }
708  break;
709  case '+':
710  if(sign == 0) {
711  sign = 1;
712  } else {
713  return seconds;
714  }
715  break;
716  case 's':
717  case 'S':
718  seconds += i;
719  i = 0;
720  break;
721  case 'm':
722  case 'M':
723  seconds += i * 60;
724  i = 0;
725  break;
726  case 'h':
727  case 'H':
728  seconds += i * 60 * 60;
729  i = 0;
730  break;
731  case 'd':
732  case 'D':
733  seconds += i * 60 * 60 * 24;
734  i = 0;
735  break;
736  case 'w':
737  case 'W':
738  seconds += i * 60 * 60 * 24 * 7;
739  i = 0;
740  break;
741  case '0':
742  case '1':
743  case '2':
744  case '3':
745  case '4':
746  case '5':
747  case '6':
748  case '7':
749  case '8':
750  case '9':
751  i *= 10;
752  i += (**endptr - '0');
753  break;
754  default:
755  seconds += i;
756  /* disregard signedness */
757  return seconds;
758  }
759  }
760  seconds += i;
761  /* disregard signedness */
762  return seconds;
763 }
ldns_dname_cat_clone
ldns_rdf * ldns_dname_cat_clone(const ldns_rdf *rd1, const ldns_rdf *rd2)
concatenates two dnames together
Definition: dname.c:52
ldns_dname_new_frm_str
ldns_rdf * ldns_dname_new_frm_str(const char *str)
creates a new dname rdf from a string.
Definition: dname.c:268
LDNS_STATUS_WIRE_RDATA_ERR
@ LDNS_STATUS_WIRE_RDATA_ERR
Definition: error.h:125
LDNS_STATUS_NULL
@ LDNS_STATUS_NULL
Definition: error.h:51
LDNS_STATUS_ERR
@ LDNS_STATUS_ERR
Definition: error.h:37
LDNS_STATUS_MEM_ERR
@ LDNS_STATUS_MEM_ERR
Definition: error.h:34
LDNS_STATUS_SYNTAX_RDATA_ERR
@ LDNS_STATUS_SYNTAX_RDATA_ERR
Definition: error.h:83
LDNS_STATUS_INVALID_POINTER
@ LDNS_STATUS_INVALID_POINTER
Definition: error.h:33
LDNS_STATUS_DDD_OVERFLOW
@ LDNS_STATUS_DDD_OVERFLOW
Definition: error.h:31
LDNS_STATUS_INVALID_RDF_TYPE
@ LDNS_STATUS_INVALID_RDF_TYPE
Definition: error.h:128
LDNS_STATUS_OK
@ LDNS_STATUS_OK
Definition: error.h:26
LDNS_STATUS_EMPTY_LABEL
@ LDNS_STATUS_EMPTY_LABEL
Definition: error.h:27
LDNS_STATUS_RDATA_OVERFLOW
@ LDNS_STATUS_RDATA_OVERFLOW
Definition: error.h:129
ldns_status
enum ldns_enum_status ldns_status
Definition: error.h:146
ldns_rdf2str
char * ldns_rdf2str(const ldns_rdf *rdf)
Converts the data in the rdata field to presentation format and returns that as a char *.
Definition: host2str.c:3268
ldns.h
Including this file will include all ldns files, and define some lookup tables.
LDNS_IP4ADDRLEN
#define LDNS_IP4ADDRLEN
Definition: ldns.h:132
LDNS_IP6ADDRLEN
#define LDNS_IP6ADDRLEN
Definition: ldns.h:133
ldns_fget_token_l
ssize_t ldns_fget_token_l(FILE *f, char *token, const char *delim, size_t limit, int *line_nr)
returns a token/char from the stream F.
Definition: parse.c:220
LDNS_PARSE_SKIP_SPACE
#define LDNS_PARSE_SKIP_SPACE
Definition: parse.h:20
LDNS_MAX_LINELEN
#define LDNS_MAX_LINELEN
Definition: parse.h:23
ldns_str2period
uint32_t ldns_str2period(const char *nptr, const char **endptr)
converts a ttl value (like 5d2h) to a long.
Definition: rdata.c:691
ldns_rdf_hip_new_frm_alg_hit_pk
ldns_status ldns_rdf_hip_new_frm_alg_hit_pk(ldns_rdf **rdf, uint8_t alg, uint8_t hit_size, uint8_t *hit, uint16_t pk_size, uint8_t *pk)
Creates a new LDNS_RDF_TYPE_HIP rdf from given data.
Definition: rdata.c:565
ldns_rdf_get_type
ldns_rdf_type ldns_rdf_get_type(const ldns_rdf *rd)
returns the type of the rdf.
Definition: rdata.c:31
ldns_rdf_set_type
void ldns_rdf_set_type(ldns_rdf *rd, ldns_rdf_type type)
sets the size of the rdf.
Definition: rdata.c:53
ldns_native2rdf_int8
ldns_rdf * ldns_native2rdf_int8(ldns_rdf_type type, uint8_t value)
returns the rdf containing the native uint8_t repr.
Definition: rdata.c:126
ldns_rdf_deep_free
void ldns_rdf_deep_free(ldns_rdf *rd)
frees a rdf structure and frees the data.
Definition: rdata.c:230
ldns_rdf_new
ldns_rdf * ldns_rdf_new(ldns_rdf_type type, size_t size, void *data)
allocates a new rdf structure and fills it.
Definition: rdata.c:179
ldns_native2rdf_int16_data
ldns_rdf * ldns_native2rdf_int16_data(size_t size, uint8_t *data)
returns an int16_data rdf that contains the data in the given array, preceded by an int16 specifying ...
Definition: rdata.c:162
ldns_rdf2native_int32
uint32_t ldns_rdf2native_int32(const ldns_rdf *rd)
returns the native uint32_t representation from the rdf.
Definition: rdata.c:98
ldns_rdf2native_int16
uint16_t ldns_rdf2native_int16(const ldns_rdf *rd)
returns the native uint16_t representation from the rdf.
Definition: rdata.c:84
ldns_octet
ldns_status ldns_octet(char *word, size_t *length)
removes \DDD, \[space] and other escapes from the input.
Definition: rdata.c:595
ldns_rdf_new_frm_str
ldns_rdf * ldns_rdf_new_frm_str(ldns_rdf_type type, const char *str)
creates a new rdf from a string.
Definition: rdata.c:249
ldns_native2rdf_int16
ldns_rdf * ldns_native2rdf_int16(ldns_rdf_type type, uint16_t value)
returns the rdf containing the native uint16_t representation.
Definition: rdata.c:132
ldns_rdf_new_frm_fp
ldns_status ldns_rdf_new_frm_fp(ldns_rdf **rdf, ldns_rdf_type type, FILE *fp)
creates a new rdf from a file containing a string.
Definition: rdata.c:386
ldns_rdf2native_int8
uint8_t ldns_rdf2native_int8(const ldns_rdf *rd)
returns the native uint8_t representation from the rdf.
Definition: rdata.c:70
ldns_rdf_address_reverse
ldns_rdf * ldns_rdf_address_reverse(const ldns_rdf *rd)
reverses an rdf, only actually useful for AAAA and A records.
Definition: rdata.c:419
ldns_rdf_hip_get_alg_hit_pk
ldns_status ldns_rdf_hip_get_alg_hit_pk(ldns_rdf *rdf, uint8_t *alg, uint8_t *hit_size, uint8_t **hit, uint16_t *pk_size, uint8_t **pk)
Gets the algorithm value, the HIT and Public Key data from the rdf with type LDNS_RDF_TYPE_HIP.
Definition: rdata.c:537
ldns_rdf_size
size_t ldns_rdf_size(const ldns_rdf *rd)
returns the size of the rdf.
Definition: rdata.c:24
ldns_rdf2native_time_t
time_t ldns_rdf2native_time_t(const ldns_rdf *rd)
returns the native time_t representation from the rdf.
Definition: rdata.c:112
ldns_rdf_set_data
void ldns_rdf_set_data(ldns_rdf *rd, void *data)
sets the size of the rdf.
Definition: rdata.c:60
ldns_rdf_data
uint8_t * ldns_rdf_data(const ldns_rdf *rd)
returns the data of the rdf.
Definition: rdata.c:38
ldns_rdf_set_size
void ldns_rdf_set_size(ldns_rdf *rd, size_t size)
sets the size of the rdf.
Definition: rdata.c:46
ldns_native2rdf_int32
ldns_rdf * ldns_native2rdf_int32(ldns_rdf_type type, uint32_t value)
returns an rdf that contains the given int32 value.
Definition: rdata.c:147
ldns_rdf_free
void ldns_rdf_free(ldns_rdf *rd)
frees a rdf structure, leaving the data pointer intact.
Definition: rdata.c:241
ldns_rdf_compare
int ldns_rdf_compare(const ldns_rdf *rd1, const ldns_rdf *rd2)
compares two rdf's on their wire formats.
Definition: rdata.c:657
ldns_rdf_clone
ldns_rdf * ldns_rdf_clone(const ldns_rdf *rd)
clones a rdf structure.
Definition: rdata.c:222
ldns_rdf_new_frm_data
ldns_rdf * ldns_rdf_new_frm_data(ldns_rdf_type type, size_t size, const void *data)
allocates a new rdf structure and fills it.
Definition: rdata.c:193
ldns_rdf_new_frm_fp_l
ldns_status ldns_rdf_new_frm_fp_l(ldns_rdf **rdf, ldns_rdf_type type, FILE *fp, int *line_nr)
creates a new rdf from a file containing a string.
Definition: rdata.c:392
LDNS_RDF_SIZE_WORD
#define LDNS_RDF_SIZE_WORD
Definition: rdata.h:34
LDNS_MAX_RDFLEN
#define LDNS_MAX_RDFLEN
Definition: rdata.h:31
LDNS_RDF_SIZE_BYTE
#define LDNS_RDF_SIZE_BYTE
Definition: rdata.h:33
LDNS_RDF_TYPE_INT32
@ LDNS_RDF_TYPE_INT32
32 bits
Definition: rdata.h:56
LDNS_RDF_TYPE_TAG
@ LDNS_RDF_TYPE_TAG
A non-zero sequence of US-ASCII letters and numbers in lower case.
Definition: rdata.h:126
LDNS_RDF_TYPE_NSAP
@ LDNS_RDF_TYPE_NSAP
NSAP.
Definition: rdata.h:103
LDNS_RDF_TYPE_HIP
@ LDNS_RDF_TYPE_HIP
Represents the Public Key Algorithm, HIT and Public Key fields for the HIP RR types.
Definition: rdata.h:92
LDNS_RDF_TYPE_B32_EXT
@ LDNS_RDF_TYPE_B32_EXT
b32 string
Definition: rdata.h:66
LDNS_RDF_TYPE_NSEC3_NEXT_OWNER
@ LDNS_RDF_TYPE_NSEC3_NEXT_OWNER
nsec3 base32 string (with length byte on wire
Definition: rdata.h:111
LDNS_RDF_TYPE_CERT_ALG
@ LDNS_RDF_TYPE_CERT_ALG
certificate algorithm
Definition: rdata.h:78
LDNS_RDF_TYPE_EUI48
@ LDNS_RDF_TYPE_EUI48
6 * 8 bit hex numbers separated by dashes.
Definition: rdata.h:119
LDNS_RDF_TYPE_SERVICE
@ LDNS_RDF_TYPE_SERVICE
protocol and port bitmaps
Definition: rdata.h:97
LDNS_RDF_TYPE_EUI64
@ LDNS_RDF_TYPE_EUI64
8 * 8 bit hex numbers separated by dashes.
Definition: rdata.h:121
LDNS_RDF_TYPE_PERIOD
@ LDNS_RDF_TYPE_PERIOD
period
Definition: rdata.h:86
LDNS_RDF_TYPE_B64
@ LDNS_RDF_TYPE_B64
b64 string
Definition: rdata.h:68
LDNS_RDF_TYPE_AAAA
@ LDNS_RDF_TYPE_AAAA
AAAA record.
Definition: rdata.h:60
LDNS_RDF_TYPE_UNKNOWN
@ LDNS_RDF_TYPE_UNKNOWN
unknown types
Definition: rdata.h:82
LDNS_RDF_TYPE_WKS
@ LDNS_RDF_TYPE_WKS
well known services
Definition: rdata.h:101
LDNS_RDF_TYPE_DNAME
@ LDNS_RDF_TYPE_DNAME
domain name
Definition: rdata.h:50
LDNS_RDF_TYPE_TIME
@ LDNS_RDF_TYPE_TIME
time (32 bits)
Definition: rdata.h:84
LDNS_RDF_TYPE_SVCPARAMS
@ LDNS_RDF_TYPE_SVCPARAMS
draft-ietf-dnsop-svcb-https
Definition: rdata.h:146
LDNS_RDF_TYPE_NSEC
@ LDNS_RDF_TYPE_NSEC
nsec type codes
Definition: rdata.h:72
LDNS_RDF_TYPE_SELECTOR
@ LDNS_RDF_TYPE_SELECTOR
Definition: rdata.h:139
LDNS_RDF_TYPE_NSEC3_SALT
@ LDNS_RDF_TYPE_NSEC3_SALT
nsec3 hash salt
Definition: rdata.h:109
LDNS_RDF_TYPE_APL
@ LDNS_RDF_TYPE_APL
apl data
Definition: rdata.h:64
LDNS_RDF_TYPE_A
@ LDNS_RDF_TYPE_A
A record.
Definition: rdata.h:58
LDNS_RDF_TYPE_LONG_STR
@ LDNS_RDF_TYPE_LONG_STR
A <character-string> encoding of the value field as specified [RFC1035], Section 5....
Definition: rdata.h:132
LDNS_RDF_TYPE_LOC
@ LDNS_RDF_TYPE_LOC
location data
Definition: rdata.h:99
LDNS_RDF_TYPE_INT16_DATA
@ LDNS_RDF_TYPE_INT16_DATA
variable length any type rdata where the length is specified by the first 2 bytes
Definition: rdata.h:95
LDNS_RDF_TYPE_ILNP64
@ LDNS_RDF_TYPE_ILNP64
4 shorts represented as 4 * 16 bit hex numbers separated by colons.
Definition: rdata.h:116
LDNS_RDF_TYPE_ATMA
@ LDNS_RDF_TYPE_ATMA
ATMA.
Definition: rdata.h:105
LDNS_RDF_TYPE_HEX
@ LDNS_RDF_TYPE_HEX
hex string
Definition: rdata.h:70
LDNS_RDF_TYPE_NONE
@ LDNS_RDF_TYPE_NONE
none
Definition: rdata.h:48
LDNS_RDF_TYPE_CLASS
@ LDNS_RDF_TYPE_CLASS
a class
Definition: rdata.h:76
LDNS_RDF_TYPE_INT8
@ LDNS_RDF_TYPE_INT8
8 bits
Definition: rdata.h:52
LDNS_RDF_TYPE_MATCHING_TYPE
@ LDNS_RDF_TYPE_MATCHING_TYPE
Definition: rdata.h:140
LDNS_RDF_TYPE_IPSECKEY
@ LDNS_RDF_TYPE_IPSECKEY
IPSECKEY.
Definition: rdata.h:107
LDNS_RDF_TYPE_CERTIFICATE_USAGE
@ LDNS_RDF_TYPE_CERTIFICATE_USAGE
Since RFC7218 TLSA records can be given with mnemonics, hence these rdata field types.
Definition: rdata.h:138
LDNS_RDF_TYPE_STR
@ LDNS_RDF_TYPE_STR
txt string
Definition: rdata.h:62
LDNS_RDF_TYPE_INT16
@ LDNS_RDF_TYPE_INT16
16 bits
Definition: rdata.h:54
LDNS_RDF_TYPE_ALG
@ LDNS_RDF_TYPE_ALG
a key algorithm
Definition: rdata.h:80
LDNS_RDF_TYPE_AMTRELAY
@ LDNS_RDF_TYPE_AMTRELAY
draft-ietf-mboned-driad-amt-discovery
Definition: rdata.h:143
LDNS_RDF_TYPE_TYPE
@ LDNS_RDF_TYPE_TYPE
a RR type
Definition: rdata.h:74
LDNS_RDF_SIZE_DOUBLEWORD
#define LDNS_RDF_SIZE_DOUBLEWORD
Definition: rdata.h:35
ldns_rdf_type
enum ldns_enum_rdf_type ldns_rdf_type
Definition: rdata.h:151
ldns_str2rdf_hex
ldns_status ldns_str2rdf_hex(ldns_rdf **rd, const char *str)
convert a hex value into wireformat
Definition: str2host.c:644
ldns_str2rdf_amtrelay
ldns_status ldns_str2rdf_amtrelay(ldns_rdf **rd, const char *str)
Convert a "<precedence> <D-bit> <type> <relay>" encoding of the value field as specified in Section 4...
Definition: str2host.c:1672
ldns_str2rdf_int8
ldns_status ldns_str2rdf_int8(ldns_rdf **rd, const char *bytestr)
convert a byte into wireformat
Definition: str2host.c:228
ldns_str2rdf_certificate_usage
ldns_status ldns_str2rdf_certificate_usage(ldns_rdf **rd, const char *str)
convert a tlsa certificate usage value into wireformat
Definition: str2host.c:839
ldns_str2rdf_hip
ldns_status ldns_str2rdf_hip(ldns_rdf **rd, const char *str)
Convert a "<algorithm> <hit> <pk>" encoding of the value field as specified in Section 6.
Definition: str2host.c:1576
ldns_str2rdf_atma
ldns_status ldns_str2rdf_atma(ldns_rdf **rd, const char *str)
convert a str with a ATMA RR into wireformat
Definition: str2host.c:1255
ldns_str2rdf_type
ldns_status ldns_str2rdf_type(ldns_rdf **rd, const char *str)
convert a rrtype into wireformat
Definition: str2host.c:738
ldns_str2rdf_nsec3_salt
ldns_status ldns_str2rdf_nsec3_salt(ldns_rdf **rd, const char *salt_str)
Definition: str2host.c:126
ldns_str2rdf_svcparams
ldns_status ldns_str2rdf_svcparams(ldns_rdf **rd, const char *str)
Convert a series of "key[=<value>]" encodings to wireformat as described in [draft-ietf-dnsop-svcb-ht...
Definition: str2host.c:2331
ldns_str2rdf_aaaa
ldns_status ldns_str2rdf_aaaa(ldns_rdf **rd, const char *str)
convert the str with an AAAA record into wireformat
Definition: str2host.c:414
ldns_str2rdf_b32_ext
ldns_status ldns_str2rdf_b32_ext(ldns_rdf **rd, const char *str)
convert the string with the b32 ext hex data into wireformat
Definition: str2host.c:613
ldns_str2rdf_period
ldns_status ldns_str2rdf_period(ldns_rdf **rd, const char *period)
Definition: str2host.c:178
ldns_str2rdf_long_str
ldns_status ldns_str2rdf_long_str(ldns_rdf **rd, const char *str)
Convert a <character-string> encoding of the value field as specified [RFC1035], Section 5....
Definition: str2host.c:1529
ldns_str2rdf_class
ldns_status ldns_str2rdf_class(ldns_rdf **rd, const char *str)
convert string with a classname into wireformat
Definition: str2host.c:749
ldns_str2rdf_dname
ldns_status ldns_str2rdf_dname(ldns_rdf **d, const char *str)
convert a dname string into wireformat
Definition: str2host.c:311
ldns_str2rdf_alg
ldns_status ldns_str2rdf_alg(ldns_rdf **rd, const char *str)
convert an algorithm value into wireformat
Definition: str2host.c:833
ldns_str2rdf_nsec
ldns_status ldns_str2rdf_nsec(ldns_rdf **rd, const char *str)
convert string with nsec into wireformat
Definition: str2host.c:690
ldns_str2rdf_a
ldns_status ldns_str2rdf_a(ldns_rdf **rd, const char *str)
convert str with an A record into wireformat
Definition: str2host.c:401
ldns_str2rdf_matching_type
ldns_status ldns_str2rdf_matching_type(ldns_rdf **rd, const char *str)
convert a tlsa matching type value into wireformat
Definition: str2host.c:852
ldns_str2rdf_wks
ldns_status ldns_str2rdf_wks(ldns_rdf **rd, const char *str)
convert string with a WKS RR into wireformat
Definition: str2host.c:1091
ldns_str2rdf_ilnp64
ldns_status ldns_str2rdf_ilnp64(ldns_rdf **rd, const char *str)
convert 4 * 16bit hex separated by colons into wireformat
Definition: str2host.c:1429
ldns_str2rdf_unknown
ldns_status ldns_str2rdf_unknown(ldns_rdf **rd __attribute__((unused)), const char *str __attribute__((unused)))
Definition: str2host.c:858
ldns_str2rdf_service
ldns_status ldns_str2rdf_service(ldns_rdf **rd __attribute__((unused)), const char *str __attribute__((unused)))
Definition: str2host.c:868
ldns_str2rdf_time
ldns_status ldns_str2rdf_time(ldns_rdf **rd, const char *time)
convert a time string to a time value in wireformat
Definition: str2host.c:57
ldns_str2rdf_nsap
ldns_status ldns_str2rdf_nsap(ldns_rdf **rd, const char *str)
convert a str with a NSAP RR into wireformat
Definition: str2host.c:1236
ldns_str2rdf_eui64
ldns_status ldns_str2rdf_eui64(ldns_rdf **rd, const char *str)
convert 8 hex bytes separated by dashes into wireformat
Definition: str2host.c:1475
ldns_str2rdf_loc
ldns_status ldns_str2rdf_loc(ldns_rdf **rd, const char *str)
convert a string with a LOC RR into wireformat
Definition: str2host.c:916
ldns_str2rdf_str
ldns_status ldns_str2rdf_str(ldns_rdf **rd, const char *str)
convert a string into wireformat (think txt record)
Definition: str2host.c:428
ldns_str2rdf_ipseckey
ldns_status ldns_str2rdf_ipseckey(ldns_rdf **rd, const char *str)
convert a str with a IPSECKEY RR into wireformat
Definition: str2host.c:1275
ldns_str2rdf_selector
ldns_status ldns_str2rdf_selector(ldns_rdf **rd, const char *str)
convert a tlsa selector value into wireformat
Definition: str2host.c:846
ldns_str2rdf_tag
ldns_status ldns_str2rdf_tag(ldns_rdf **rd, const char *str)
Convert a non-zero sequence of US-ASCII letters and numbers into wireformat.
Definition: str2host.c:1500
ldns_str2rdf_apl
ldns_status ldns_str2rdf_apl(ldns_rdf **rd, const char *str)
convert str with the apl record into wireformat
Definition: str2host.c:472
ldns_str2rdf_b64
ldns_status ldns_str2rdf_b64(ldns_rdf **rd, const char *str)
convert the string with the b64 data into wireformat
Definition: str2host.c:583
ldns_str2rdf_eui48
ldns_status ldns_str2rdf_eui48(ldns_rdf **rd, const char *str)
convert 6 hex bytes separated by dashes into wireformat
Definition: str2host.c:1452
ldns_str2rdf_int32
ldns_status ldns_str2rdf_int32(ldns_rdf **rd, const char *longstr)
convert a strings into a 4 byte int in wireformat
Definition: str2host.c:197
ldns_str2rdf_int16
ldns_status ldns_str2rdf_int16(ldns_rdf **rd, const char *shortstr)
convert a string to a int16 in wireformat
Definition: str2host.c:36
ldns_str2rdf_cert_alg
ldns_status ldns_str2rdf_cert_alg(ldns_rdf **rd, const char *str)
convert an certificate algorithm value into wireformat
Definition: str2host.c:763
ldns_struct_rdf
Resource record data field.
Definition: rdata.h:197
ldns_struct_rdf::_type
ldns_rdf_type _type
The type of the data.
Definition: rdata.h:201
ldns_struct_rdf::_size
size_t _size
The size of the data (in octets)
Definition: rdata.h:199
ldns_struct_rdf::_data
void * _data
Pointer to the data (raw octets)
Definition: rdata.h:203
ldns_int_to_hexdigit
char ldns_int_to_hexdigit(int i)
Returns the char (hex) representation of the given int.
Definition: util.c:113
LDNS_FREE
#define LDNS_FREE(ptr)
Definition: util.h:60
LDNS_MALLOC
#define LDNS_MALLOC(type)
Memory management macros.
Definition: util.h:49
LDNS_XMALLOC
#define LDNS_XMALLOC(type, count)
Definition: util.h:51