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mld6query(8): Rename mld6.c -> mld6query.c
[dragonfly.git] / contrib / ldns / str2host.c
blob51357cc3176cdad15bae345ade5fb4588ae5ad4f
1 /*
2 * str2host.c
3 *
4 * conversion routines from the presentation format
5 * to the host format
6 *
7 * a Net::DNS like library for C
8 *
9 * (c) NLnet Labs, 2004-2006
10 *
11 * See the file LICENSE for the license
12 */
13 #include <ldns/config.h>
14
15 #include <ldns/ldns.h>
16
17 #ifdef HAVE_SYS_SOCKET_H
18 #include <sys/socket.h>
19 #endif
20 #ifdef HAVE_ARPA_INET_H
21 #include <arpa/inet.h>
22 #endif
23 #include <time.h>
24
25 #include <errno.h>
26 #ifdef HAVE_NETDB_H
27 #include <netdb.h>
28 #endif
29
30 #include <limits.h>
31 #ifdef HAVE_SYS_PARAM_H
32 #include <sys/param.h>
33 #endif
34
35 ldns_status
36 ldns_str2rdf_int16(ldns_rdf **rd, const char *shortstr)
37 {
38 char *end = NULL;
39 uint16_t *r;
40 r = LDNS_MALLOC(uint16_t);
41 if(!r) return LDNS_STATUS_MEM_ERR;
42
43 *r = htons((uint16_t)strtol((char *)shortstr, &end, 10));
44
45 if(*end != 0) {
46 LDNS_FREE(r);
47 return LDNS_STATUS_INVALID_INT;
48 } else {
49 *rd = ldns_rdf_new_frm_data(
50 LDNS_RDF_TYPE_INT16, sizeof(uint16_t), r);
51 LDNS_FREE(r);
52 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
53 }
54 }
55
56 ldns_status
57 ldns_str2rdf_time(ldns_rdf **rd, const char *time)
58 {
59 /* convert a time YYYYDDMMHHMMSS to wireformat */
60 uint16_t *r = NULL;
61 struct tm tm;
62 uint32_t l;
63 char *end;
64
65 /* Try to scan the time... */
66 r = (uint16_t*)LDNS_MALLOC(uint32_t);
67 if(!r) return LDNS_STATUS_MEM_ERR;
68
69 memset(&tm, 0, sizeof(tm));
70
71 if (strlen(time) == 14 &&
72 sscanf(time, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) == 6
73 ) {
74 tm.tm_year -= 1900;
75 tm.tm_mon--;
76 /* Check values */
77 if (tm.tm_year < 70) {
78 goto bad_format;
79 }
80 if (tm.tm_mon < 0 || tm.tm_mon > 11) {
81 goto bad_format;
82 }
83 if (tm.tm_mday < 1 || tm.tm_mday > 31) {
84 goto bad_format;
85 }
86
87 if (tm.tm_hour < 0 || tm.tm_hour > 23) {
88 goto bad_format;
89 }
90
91 if (tm.tm_min < 0 || tm.tm_min > 59) {
92 goto bad_format;
93 }
94
95 if (tm.tm_sec < 0 || tm.tm_sec > 59) {
96 goto bad_format;
97 }
98
99 l = htonl(ldns_mktime_from_utc(&tm));
100 memcpy(r, &l, sizeof(uint32_t));
101 *rd = ldns_rdf_new_frm_data(
102 LDNS_RDF_TYPE_TIME, sizeof(uint32_t), r);
103 LDNS_FREE(r);
104 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
105 } else {
106 /* handle it as 32 bits timestamp */
107 l = htonl((uint32_t)strtol((char*)time, &end, 10));
108 if(*end != 0) {
109 LDNS_FREE(r);
110 return LDNS_STATUS_ERR;
111 } else {
112 memcpy(r, &l, sizeof(uint32_t));
113 *rd = ldns_rdf_new_frm_data(
114 LDNS_RDF_TYPE_INT32, sizeof(uint32_t), r);
115 LDNS_FREE(r);
116 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
117 }
118 }
119
120 bad_format:
121 LDNS_FREE(r);
122 return LDNS_STATUS_INVALID_TIME;
123 }
124
125 ldns_status
126 ldns_str2rdf_nsec3_salt(ldns_rdf **rd, const char *salt_str)
127 {
128 uint8_t salt_length;
129 int c;
130 int salt_length_str;
131
132 uint8_t *salt;
133 uint8_t *data;
134 if(rd == NULL) {
135 return LDNS_STATUS_NULL;
136 }
137
138 salt_length_str = (int)strlen(salt_str);
139 if (salt_length_str == 1 && salt_str[0] == '-') {
140 salt_length_str = 0;
141 } else if (salt_length_str % 2 != 0) {
142 return LDNS_STATUS_INVALID_HEX;
143 }
144 if (salt_length_str > 512) {
145 return LDNS_STATUS_INVALID_HEX;
146 }
147
148 salt = LDNS_XMALLOC(uint8_t, salt_length_str / 2);
149 if(!salt) {
150 return LDNS_STATUS_MEM_ERR;
151 }
152 for (c = 0; c < salt_length_str; c += 2) {
153 if (isxdigit((int) salt_str[c]) && isxdigit((int) salt_str[c+1])) {
154 salt[c/2] = (uint8_t) ldns_hexdigit_to_int(salt_str[c]) * 16 +
155 ldns_hexdigit_to_int(salt_str[c+1]);
156 } else {
157 LDNS_FREE(salt);
158 return LDNS_STATUS_INVALID_HEX;
159 }
160 }
161 salt_length = (uint8_t) (salt_length_str / 2);
162
163 data = LDNS_XMALLOC(uint8_t, 1 + salt_length);
164 if(!data) {
165 LDNS_FREE(salt);
166 return LDNS_STATUS_MEM_ERR;
167 }
168 data[0] = salt_length;
169 memcpy(&data[1], salt, salt_length);
170 *rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_NSEC3_SALT, 1 + salt_length, data);
171 LDNS_FREE(data);
172 LDNS_FREE(salt);
173
174 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
175 }
176
177 ldns_status
178 ldns_str2rdf_period(ldns_rdf **rd,const char *period)
179 {
180 uint32_t p;
181 const char *end;
182
183 /* Allocate required space... */
184 p = ldns_str2period(period, &end);
185
186 if (*end != 0) {
187 return LDNS_STATUS_ERR;
188 } else {
189 p = (uint32_t) htonl(p);
190 *rd = ldns_rdf_new_frm_data(
191 LDNS_RDF_TYPE_PERIOD, sizeof(uint32_t), &p);
192 }
193 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
194 }
195
196 ldns_status
197 ldns_str2rdf_int32(ldns_rdf **rd, const char *longstr)
198 {
199 char *end;
200 uint16_t *r = NULL;
201 uint32_t l;
202
203 r = (uint16_t*)LDNS_MALLOC(uint32_t);
204 if(!r) return LDNS_STATUS_MEM_ERR;
205 errno = 0; /* must set to zero before call,
206 note race condition on errno */
207 if(*longstr == '-')
208 l = htonl((uint32_t)strtol((char*)longstr, &end, 10));
209 else l = htonl((uint32_t)strtoul((char*)longstr, &end, 10));
210
211 if(*end != 0) {
212 LDNS_FREE(r);
213 return LDNS_STATUS_ERR;
214 } else {
215 if (errno == ERANGE) {
216 LDNS_FREE(r);
217 return LDNS_STATUS_SYNTAX_INTEGER_OVERFLOW;
218 }
219 memcpy(r, &l, sizeof(uint32_t));
220 *rd = ldns_rdf_new_frm_data(
221 LDNS_RDF_TYPE_INT32, sizeof(uint32_t), r);
222 LDNS_FREE(r);
223 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
224 }
225 }
226
227 ldns_status
228 ldns_str2rdf_int8(ldns_rdf **rd, const char *bytestr)
229 {
230 char *end;
231 uint8_t *r = NULL;
232
233 r = LDNS_MALLOC(uint8_t);
234 if(!r) return LDNS_STATUS_MEM_ERR;
235
236 *r = (uint8_t)strtol((char*)bytestr, &end, 10);
237
238 if(*end != 0) {
239 LDNS_FREE(r);
240 return LDNS_STATUS_ERR;
241 } else {
242 *rd = ldns_rdf_new_frm_data(
243 LDNS_RDF_TYPE_INT8, sizeof(uint8_t), r);
244 LDNS_FREE(r);
245 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
246 }
247 }
248
249
250 /*
251 * Checks whether the escaped value at **s is an octal value or
252 * a 'normally' escaped character (and not eos)
253 *
254 * The string pointer at *s is increased by either 0 (on error), 1 (on
255 * normal escapes), or 3 (on octals)
256 *
257 * Returns the number of bytes read from the escaped string, or
258 * 0 on error
259 */
260 static int
261 parse_escape(uint8_t *s, uint8_t *q) {
262 uint16_t val;
263 if (strlen((char *)s) > 3 &&
264 isdigit((int) s[1]) &&
265 isdigit((int) s[2]) &&
266 isdigit((int) s[3])) {
267 /* cast this so it fits */
268 val = (uint16_t) ldns_hexdigit_to_int((char) s[1]) * 100 +
269 ldns_hexdigit_to_int((char) s[2]) * 10 +
270 ldns_hexdigit_to_int((char) s[3]);
271 if (val > 255) {
272 /* outside range */
273 return 0;
274 }
275 *q = (uint8_t) val;
276 return 3;
277 } else {
278 s++;
279 if (*s == '\0' || isdigit((int) *s)) {
280 /* apparently the string terminator
281 * or a digit has been escaped...
282 */
283 return 0;
284 }
285 *q = *s;
286 return 1;
287 }
288 }
289
290 /*
291 * No special care is taken, all dots are translated into
292 * label seperators.
293 * Could be made more efficient....we do 3 memcpy's in total...
294 */
295 ldns_status
296 ldns_str2rdf_dname(ldns_rdf **d, const char *str)
297 {
298 size_t len;
299
300 int esc;
301 uint8_t *s, *q, *pq, label_len;
302 uint8_t buf[LDNS_MAX_DOMAINLEN + 1];
303 *d = NULL;
304
305 len = strlen((char*)str);
306 /* octet representation can make strings a lot longer than actual length */
307 if (len > LDNS_MAX_DOMAINLEN * 4) {
308 return LDNS_STATUS_DOMAINNAME_OVERFLOW;
309 }
310 if (0 == len) {
311 return LDNS_STATUS_DOMAINNAME_UNDERFLOW;
312 }
313
314 /* root label */
315 if (1 == len && *str == '.') {
316 *d = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_DNAME, 1, "\0");
317 return LDNS_STATUS_OK;
318 }
319
320 /* get on with the rest */
321
322 /* s is on the current character in the string
323 * pq points to where the labellength is going to go
324 * label_len keeps track of the current label's length
325 * q builds the dname inside the buf array
326 */
327 len = 0;
328 q = buf+1;
329 pq = buf;
330 label_len = 0;
331 for (s = (uint8_t *)str; *s; s++, q++) {
332 if (q > buf + LDNS_MAX_DOMAINLEN) {
333 return LDNS_STATUS_DOMAINNAME_OVERFLOW;
334 }
335 *q = 0;
336 switch (*s) {
337 case '.':
338 if (label_len > LDNS_MAX_LABELLEN) {
339 return LDNS_STATUS_LABEL_OVERFLOW;
340 }
341 if (label_len == 0) {
342 return LDNS_STATUS_EMPTY_LABEL;
343 }
344 len += label_len + 1;
345 *pq = label_len;
346 label_len = 0;
347 pq = q;
348 break;
349 case '\\':
350 /* octet value or literal char */
351 esc = parse_escape(s, q);
352 if (esc > 0) {
353 s += esc;
354 label_len++;
355 } else {
356 return LDNS_STATUS_SYNTAX_BAD_ESCAPE;
357 }
358 break;
359 default:
360 *q = *s;
361 label_len++;
362 }
363 }
364
365 /* add root label if last char was not '.' */
366 if (!ldns_dname_str_absolute(str)) {
367 if (q > buf + LDNS_MAX_DOMAINLEN) {
368 return LDNS_STATUS_DOMAINNAME_OVERFLOW;
369 }
370 if (label_len > LDNS_MAX_LABELLEN) {
371 return LDNS_STATUS_LABEL_OVERFLOW;
372 }
373 if (label_len == 0) { /* label_len 0 but not . at end? */
374 return LDNS_STATUS_EMPTY_LABEL;
375 }
376 len += label_len + 1;
377 *pq = label_len;
378 *q = 0;
379 }
380 len++;
381
382 *d = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_DNAME, len, buf);
383 return LDNS_STATUS_OK;
384 }
385
386 ldns_status
387 ldns_str2rdf_a(ldns_rdf **rd, const char *str)
388 {
389 in_addr_t address;
390 if (inet_pton(AF_INET, (char*)str, &address) != 1) {
391 return LDNS_STATUS_INVALID_IP4;
392 } else {
393 *rd = ldns_rdf_new_frm_data(
394 LDNS_RDF_TYPE_A, sizeof(address), &address);
395 }
396 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
397 }
398
399 ldns_status
400 ldns_str2rdf_aaaa(ldns_rdf **rd, const char *str)
401 {
402 uint8_t address[LDNS_IP6ADDRLEN + 1];
403
404 if (inet_pton(AF_INET6, (char*)str, address) != 1) {
405 return LDNS_STATUS_INVALID_IP6;
406 } else {
407 *rd = ldns_rdf_new_frm_data(
408 LDNS_RDF_TYPE_AAAA, sizeof(address) - 1, &address);
409 }
410 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
411 }
412
413 ldns_status
414 ldns_str2rdf_str(ldns_rdf **rd, const char *str)
415 {
416 uint8_t *data;
417 size_t i, str_i, esc_i;
418
419 if (strlen(str) > 255) {
420 return LDNS_STATUS_INVALID_STR;
421 }
422
423 data = LDNS_XMALLOC(uint8_t, strlen(str) + 1);
424 if(!data) return LDNS_STATUS_MEM_ERR;
425 i = 1;
426
427 for (str_i = 0; str_i < strlen(str); str_i++) {
428 if (str[str_i] == '\\') {
429 /* octet value or literal char */
430 esc_i = (size_t) parse_escape((uint8_t*) &str[str_i], (uint8_t*) &data[i]);
431 if (esc_i == 0) {
432 LDNS_FREE(data);
433 return LDNS_STATUS_SYNTAX_BAD_ESCAPE;
434 }
435 str_i += esc_i;
436 } else {
437 data[i] = (uint8_t) str[str_i];
438 }
439 i++;
440 }
441 data[0] = i - 1;
442 *rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_STR, i, data);
443
444 LDNS_FREE(data);
445 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
446 }
447
448 ldns_status
449 ldns_str2rdf_apl(ldns_rdf **rd, const char *str)
450 {
451 const char *my_str = str;
452
453 char *my_ip_str;
454 size_t ip_str_len;
455
456 uint16_t family;
457 bool negation;
458 uint8_t afdlength = 0;
459 uint8_t *afdpart;
460 uint8_t prefix;
461
462 uint8_t *data;
463
464 size_t i = 0;
465
466 /* [!]afi:address/prefix */
467 if (strlen(my_str) < 2
468 || strchr(my_str, ':') == NULL
469 || strchr(my_str, '/') == NULL
470 || strchr(my_str, ':') > strchr(my_str, '/')) {
471 return LDNS_STATUS_INVALID_STR;
472 }
473
474 if (my_str[0] == '!') {
475 negation = true;
476 my_str += 1;
477 } else {
478 negation = false;
479 }
480
481 family = (uint16_t) atoi(my_str);
482
483 my_str = strchr(my_str, ':') + 1;
484
485 /* need ip addr and only ip addr for inet_pton */
486 ip_str_len = (size_t) (strchr(my_str, '/') - my_str);
487 my_ip_str = LDNS_XMALLOC(char, ip_str_len + 1);
488 if(!my_ip_str) return LDNS_STATUS_MEM_ERR;
489 strncpy(my_ip_str, my_str, ip_str_len + 1);
490 my_ip_str[ip_str_len] = '\0';
491
492 if (family == 1) {
493 /* ipv4 */
494 afdpart = LDNS_XMALLOC(uint8_t, 4);
495 if(!afdpart) {
496 LDNS_FREE(my_ip_str);
497 return LDNS_STATUS_MEM_ERR;
498 }
499 if (inet_pton(AF_INET, my_ip_str, afdpart) == 0) {
500 LDNS_FREE(my_ip_str);
501 LDNS_FREE(afdpart);
502 return LDNS_STATUS_INVALID_STR;
503 }
504 for (i = 0; i < 4; i++) {
505 if (afdpart[i] != 0) {
506 afdlength = i + 1;
507 }
508 }
509 } else if (family == 2) {
510 /* ipv6 */
511 afdpart = LDNS_XMALLOC(uint8_t, 16);
512 if(!afdpart) {
513 LDNS_FREE(my_ip_str);
514 return LDNS_STATUS_MEM_ERR;
515 }
516 if (inet_pton(AF_INET6, my_ip_str, afdpart) == 0) {
517 LDNS_FREE(my_ip_str);
518 LDNS_FREE(afdpart);
519 return LDNS_STATUS_INVALID_STR;
520 }
521 for (i = 0; i < 16; i++) {
522 if (afdpart[i] != 0) {
523 afdlength = i + 1;
524 }
525 }
526 } else {
527 /* unknown family */
528 LDNS_FREE(my_ip_str);
529 return LDNS_STATUS_INVALID_STR;
530 }
531
532 my_str = strchr(my_str, '/') + 1;
533 prefix = (uint8_t) atoi(my_str);
534
535 data = LDNS_XMALLOC(uint8_t, 4 + afdlength);
536 if(!data) {
537 LDNS_FREE(afdpart);
538 LDNS_FREE(my_ip_str);
539 return LDNS_STATUS_INVALID_STR;
540 }
541 ldns_write_uint16(data, family);
542 data[2] = prefix;
543 data[3] = afdlength;
544 if (negation) {
545 /* set bit 1 of byte 3 */
546 data[3] = data[3] | 0x80;
547 }
548
549 memcpy(data + 4, afdpart, afdlength);
550
551 *rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_APL, afdlength + 4, data);
552 LDNS_FREE(afdpart);
553 LDNS_FREE(data);
554 LDNS_FREE(my_ip_str);
555
556 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
557 }
558
559 ldns_status
560 ldns_str2rdf_b64(ldns_rdf **rd, const char *str)
561 {
562 uint8_t *buffer;
563 int16_t i;
564
565 buffer = LDNS_XMALLOC(uint8_t, ldns_b64_ntop_calculate_size(strlen(str)));
566 if(!buffer) {
567 return LDNS_STATUS_MEM_ERR;
568 }
569
570 i = (uint16_t)ldns_b64_pton((const char*)str, buffer,
571 ldns_b64_ntop_calculate_size(strlen(str)));
572 if (-1 == i) {
573 LDNS_FREE(buffer);
574 return LDNS_STATUS_INVALID_B64;
575 } else {
576 *rd = ldns_rdf_new_frm_data(
577 LDNS_RDF_TYPE_B64, (uint16_t) i, buffer);
578 }
579 LDNS_FREE(buffer);
580
581 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
582 }
583
584 ldns_status
585 ldns_str2rdf_b32_ext(ldns_rdf **rd, const char *str)
586 {
587 uint8_t *buffer;
588 int i;
589 /* first byte contains length of actual b32 data */
590 uint8_t len = ldns_b32_pton_calculate_size(strlen(str));
591 buffer = LDNS_XMALLOC(uint8_t, len + 1);
592 if(!buffer) {
593 return LDNS_STATUS_MEM_ERR;
594 }
595 buffer[0] = len;
596
597 i = ldns_b32_pton_extended_hex((const char*)str, strlen(str), buffer + 1,
598 ldns_b32_ntop_calculate_size(strlen(str)));
599 if (i < 0) {
600 LDNS_FREE(buffer);
601 return LDNS_STATUS_INVALID_B32_EXT;
602 } else {
603 *rd = ldns_rdf_new_frm_data(
604 LDNS_RDF_TYPE_B32_EXT, (uint16_t) i + 1, buffer);
605 }
606 LDNS_FREE(buffer);
607
608 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
609 }
610
611 ldns_status
612 ldns_str2rdf_hex(ldns_rdf **rd, const char *str)
613 {
614 uint8_t *t, *t_orig;
615 int i;
616 size_t len;
617
618 len = strlen(str);
619
620 if (len > LDNS_MAX_RDFLEN * 2) {
621 return LDNS_STATUS_LABEL_OVERFLOW;
622 } else {
623 t = LDNS_XMALLOC(uint8_t, (len / 2) + 1);
624 if(!t) {
625 return LDNS_STATUS_MEM_ERR;
626 }
627 t_orig = t;
628 /* Now process octet by octet... */
629 while (*str) {
630 *t = 0;
631 if (isspace((int) *str)) {
632 str++;
633 } else {
634 for (i = 16; i >= 1; i -= 15) {
635 while (*str && isspace((int) *str)) { str++; }
636 if (*str) {
637 if (isxdigit((int) *str)) {
638 *t += ldns_hexdigit_to_int(*str) * i;
639 } else {
640 LDNS_FREE(t_orig);
641 return LDNS_STATUS_ERR;
642 }
643 ++str;
644 }
645 }
646 ++t;
647 }
648 }
649 *rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_HEX,
650 (size_t) (t - t_orig),
651 t_orig);
652 LDNS_FREE(t_orig);
653 }
654 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
655 }
656
657 ldns_status
658 ldns_str2rdf_nsec(ldns_rdf **rd, const char *str)
659 {
660 const char *delimiters = "\n\t ";
661 char *token = LDNS_XMALLOC(char, LDNS_MAX_RDFLEN);
662 ldns_buffer *str_buf;
663 ssize_t c;
664 uint16_t cur_type;
665 size_t type_count = 0;
666 ldns_rr_type type_list[65536];
667 if(!token) return LDNS_STATUS_MEM_ERR;
668 if(rd == NULL) {
669 LDNS_FREE(token);
670 return LDNS_STATUS_NULL;
671 }
672
673 str_buf = LDNS_MALLOC(ldns_buffer);
674 if(!str_buf) {
675 LDNS_FREE(token);
676 return LDNS_STATUS_MEM_ERR;
677 }
678 ldns_buffer_new_frm_data(str_buf, (char *)str, strlen(str));
679 if(ldns_buffer_status(str_buf) != LDNS_STATUS_OK) {
680 LDNS_FREE(str_buf);
681 LDNS_FREE(token);
682 return LDNS_STATUS_MEM_ERR;
683 }
684
685 while ((c = ldns_bget_token(str_buf, token, delimiters, LDNS_MAX_RDFLEN)) != -1 && c != 0) {
686 if(type_count >= sizeof(type_list)) {
687 LDNS_FREE(str_buf);
688 LDNS_FREE(token);
689 return LDNS_STATUS_ERR;
690 }
691 cur_type = ldns_get_rr_type_by_name(token);
692 type_list[type_count] = cur_type;
693 type_count++;
694 }
695
696 *rd = ldns_dnssec_create_nsec_bitmap(type_list,
697 type_count,
698 LDNS_RR_TYPE_NSEC);
699
700 LDNS_FREE(token);
701 ldns_buffer_free(str_buf);
702 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
703 }
704
705 ldns_status
706 ldns_str2rdf_type(ldns_rdf **rd, const char *str)
707 {
708 uint16_t type;
709 type = htons(ldns_get_rr_type_by_name(str));
710 /* ldns_rr_type is a 16 bit value */
711 *rd = ldns_rdf_new_frm_data(
712 LDNS_RDF_TYPE_TYPE, sizeof(uint16_t), &type);
713 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
714 }
715
716 ldns_status
717 ldns_str2rdf_class(ldns_rdf **rd, const char *str)
718 {
719 uint16_t klass;
720 klass = htons(ldns_get_rr_class_by_name(str));
721 /* class is 16 bit */
722 *rd = ldns_rdf_new_frm_data(
723 LDNS_RDF_TYPE_CLASS, sizeof(uint16_t), &klass);
724 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
725 }
726
727 /* An certificate alg field can either be specified as a 8 bits number
728 * or by its symbolic name. Handle both
729 */
730 ldns_status
731 ldns_str2rdf_cert_alg(ldns_rdf **rd, const char *str)
732 {
733 ldns_lookup_table *lt;
734 ldns_status st;
735 uint8_t idd[2];
736 lt = ldns_lookup_by_name(ldns_cert_algorithms, str);
737 st = LDNS_STATUS_OK;
738
739 if (lt) {
740 ldns_write_uint16(idd, (uint16_t) lt->id);
741 *rd = ldns_rdf_new_frm_data(
742 LDNS_RDF_TYPE_INT16, sizeof(uint16_t), idd);
743 if (!*rd) {
744 st = LDNS_STATUS_ERR;
745 }
746 } else {
747 /* try as-is (a number) */
748 st = ldns_str2rdf_int16(rd, str);
749 if (st == LDNS_STATUS_OK &&
750 ldns_rdf2native_int16(*rd) == 0) {
751 st = LDNS_STATUS_CERT_BAD_ALGORITHM;
752 }
753 }
754
755 return st;
756 }
757
758 /* An alg field can either be specified as a 8 bits number
759 * or by its symbolic name. Handle both
760 */
761 ldns_status
762 ldns_str2rdf_alg(ldns_rdf **rd, const char *str)
763 {
764 ldns_lookup_table *lt;
765 ldns_status st;
766
767 lt = ldns_lookup_by_name(ldns_algorithms, str);
768 st = LDNS_STATUS_OK;
769
770 if (lt) {
771 /* it was given as a integer */
772 *rd = ldns_native2rdf_int8(LDNS_RDF_TYPE_INT8, (uint8_t) lt->id);
773 if (!*rd) {
774 st = LDNS_STATUS_ERR;
775 }
776 } else {
777 /* try as-is (a number) */
778 st = ldns_str2rdf_int8(rd, str);
779 }
780 return st;
781 }
782
783 ldns_status
784 ldns_str2rdf_unknown( ATTR_UNUSED(ldns_rdf **rd)
785 , ATTR_UNUSED(const char *str)
786 )
787 {
788 /* this should be caught in an earlier time (general str2host for
789 rr's */
790 return LDNS_STATUS_NOT_IMPL;
791 }
792
793 ldns_status
794 ldns_str2rdf_tsig( ATTR_UNUSED(ldns_rdf **rd)
795 , ATTR_UNUSED(const char *str)
796 )
797 {
798 /* there is no string representation for TSIG rrs */
799 return LDNS_STATUS_NOT_IMPL;
800 }
801
802 ldns_status
803 ldns_str2rdf_service( ATTR_UNUSED(ldns_rdf **rd)
804 , ATTR_UNUSED(const char *str)
805 )
806 {
807 /* is this used? is this actually WKS? or SRV? */
808 return LDNS_STATUS_NOT_IMPL;
809 }
810
811 static int
812 loc_parse_cm(char* my_str, char** endstr, uint8_t* m, uint8_t* e)
813 {
814 /* read <digits>[.<digits>][mM] */
815 /* into mantissa exponent format for LOC type */
816 uint32_t meters = 0, cm = 0, val;
817 while (isblank(*my_str)) {
818 my_str++;
819 }
820 meters = (uint32_t)strtol(my_str, &my_str, 10);
821 if (*my_str == '.') {
822 my_str++;
823 cm = (uint32_t)strtol(my_str, &my_str, 10);
824 }
825 if (meters >= 1) {
826 *e = 2;
827 val = meters;
828 } else {
829 *e = 0;
830 val = cm;
831 }
832 while(val >= 10) {
833 (*e)++;
834 val /= 10;
835 }
836 *m = (uint8_t)val;
837
838 if (*e > 9)
839 return 0;
840 if (*my_str == 'm' || *my_str == 'M') {
841 my_str++;
842 }
843 *endstr = my_str;
844 return 1;
845 }
846
847 ldns_status
848 ldns_str2rdf_loc(ldns_rdf **rd, const char *str)
849 {
850 uint32_t latitude = 0;
851 uint32_t longitude = 0;
852 uint32_t altitude = 0;
853
854 uint8_t *data;
855 uint32_t equator = (uint32_t) ldns_power(2, 31);
856
857 uint32_t h = 0;
858 uint32_t m = 0;
859 uint8_t size_b = 1, size_e = 2;
860 uint8_t horiz_pre_b = 1, horiz_pre_e = 6;
861 uint8_t vert_pre_b = 1, vert_pre_e = 3;
862
863 double s = 0.0;
864 bool northerness;
865 bool easterness;
866
867 char *my_str = (char *) str;
868
869 /* only support version 0 */
870 if (isdigit((int) *my_str)) {
871 h = (uint32_t) strtol(my_str, &my_str, 10);
872 } else {
873 return LDNS_STATUS_INVALID_STR;
874 }
875
876 while (isblank((int) *my_str)) {
877 my_str++;
878 }
879
880 if (isdigit((int) *my_str)) {
881 m = (uint32_t) strtol(my_str, &my_str, 10);
882 } else if (*my_str == 'N' || *my_str == 'S') {
883 goto north;
884 } else {
885 return LDNS_STATUS_INVALID_STR;
886 }
887
888 while (isblank((int) *my_str)) {
889 my_str++;
890 }
891
892 if (isdigit((int) *my_str)) {
893 s = strtod(my_str, &my_str);
894 }
895 north:
896 while (isblank((int) *my_str)) {
897 my_str++;
898 }
899
900 if (*my_str == 'N') {
901 northerness = true;
902 } else if (*my_str == 'S') {
903 northerness = false;
904 } else {
905 return LDNS_STATUS_INVALID_STR;
906 }
907
908 my_str++;
909
910 /* store number */
911 s = 1000.0 * s;
912 /* add a little to make floor in conversion a round */
913 s += 0.0005;
914 latitude = (uint32_t) s;
915 latitude += 1000 * 60 * m;
916 latitude += 1000 * 60 * 60 * h;
917 if (northerness) {
918 latitude = equator + latitude;
919 } else {
920 latitude = equator - latitude;
921 }
922 while (isblank(*my_str)) {
923 my_str++;
924 }
925
926 if (isdigit((int) *my_str)) {
927 h = (uint32_t) strtol(my_str, &my_str, 10);
928 } else {
929 return LDNS_STATUS_INVALID_STR;
930 }
931
932 while (isblank((int) *my_str)) {
933 my_str++;
934 }
935
936 if (isdigit((int) *my_str)) {
937 m = (uint32_t) strtol(my_str, &my_str, 10);
938 } else if (*my_str == 'E' || *my_str == 'W') {
939 goto east;
940 } else {
941 return LDNS_STATUS_INVALID_STR;
942 }
943
944 while (isblank(*my_str)) {
945 my_str++;
946 }
947
948 if (isdigit((int) *my_str)) {
949 s = strtod(my_str, &my_str);
950 }
951
952 east:
953 while (isblank(*my_str)) {
954 my_str++;
955 }
956
957 if (*my_str == 'E') {
958 easterness = true;
959 } else if (*my_str == 'W') {
960 easterness = false;
961 } else {
962 return LDNS_STATUS_INVALID_STR;
963 }
964
965 my_str++;
966
967 /* store number */
968 s *= 1000.0;
969 /* add a little to make floor in conversion a round */
970 s += 0.0005;
971 longitude = (uint32_t) s;
972 longitude += 1000 * 60 * m;
973 longitude += 1000 * 60 * 60 * h;
974
975 if (easterness) {
976 longitude += equator;
977 } else {
978 longitude = equator - longitude;
979 }
980
981 altitude = (uint32_t)(strtod(my_str, &my_str)*100.0 +
982 10000000.0 + 0.5);
983 if (*my_str == 'm' || *my_str == 'M') {
984 my_str++;
985 }
986
987 if (strlen(my_str) > 0) {
988 if(!loc_parse_cm(my_str, &my_str, &size_b, &size_e))
989 return LDNS_STATUS_INVALID_STR;
990 }
991
992 if (strlen(my_str) > 0) {
993 if(!loc_parse_cm(my_str, &my_str, &horiz_pre_b, &horiz_pre_e))
994 return LDNS_STATUS_INVALID_STR;
995 }
996
997 if (strlen(my_str) > 0) {
998 if(!loc_parse_cm(my_str, &my_str, &vert_pre_b, &vert_pre_e))
999 return LDNS_STATUS_INVALID_STR;
1000 }
1001
1002 data = LDNS_XMALLOC(uint8_t, 16);
1003 if(!data) {
1004 return LDNS_STATUS_MEM_ERR;
1005 }
1006 data[0] = 0;
1007 data[1] = 0;
1008 data[1] = ((size_b << 4) & 0xf0) | (size_e & 0x0f);
1009 data[2] = ((horiz_pre_b << 4) & 0xf0) | (horiz_pre_e & 0x0f);
1010 data[3] = ((vert_pre_b << 4) & 0xf0) | (vert_pre_e & 0x0f);
1011 ldns_write_uint32(data + 4, latitude);
1012 ldns_write_uint32(data + 8, longitude);
1013 ldns_write_uint32(data + 12, altitude);
1014
1015 *rd = ldns_rdf_new_frm_data(
1016 LDNS_RDF_TYPE_LOC, 16, data);
1017
1018 LDNS_FREE(data);
1019 return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
1020 }
1021
1022 ldns_status
1023 ldns_str2rdf_wks(ldns_rdf **rd, const char *str)
1024 {
1025 uint8_t *bitmap = NULL;
1026 uint8_t *data;
1027 int bm_len = 0;
1028
1029 struct protoent *proto = NULL;
1030 struct servent *serv = NULL;
1031 int serv_port;
1032
1033 ldns_buffer *str_buf;
1034
1035 char *proto_str = NULL;
1036 char *token;
1037 if(strlen(str) == 0)
1038 token = LDNS_XMALLOC(char, 50);
1039 else token = LDNS_XMALLOC(char, strlen(str)+2);
1040 if(!token) return LDNS_STATUS_MEM_ERR;
1041
1042 str_buf = LDNS_MALLOC(ldns_buffer);
1043 if(!str_buf) {LDNS_FREE(token); return LDNS_STATUS_MEM_ERR;}
1044 ldns_buffer_new_frm_data(str_buf, (char *)str, strlen(str));
1045 if(ldns_buffer_status(str_buf) != LDNS_STATUS_OK) {
1046 LDNS_FREE(str_buf);
1047 LDNS_FREE(token);
1048 return LDNS_STATUS_MEM_ERR;
1049 }
1050
1051 while(ldns_bget_token(str_buf, token, "\t\n ", strlen(str)) > 0) {
1052 if (!proto_str) {
1053 proto_str = strdup(token);
1054 if (!proto_str) {
1055 LDNS_FREE(bitmap);
1056 LDNS_FREE(token);
1057 ldns_buffer_free(str_buf);
1058 return LDNS_STATUS_INVALID_STR;
1059 }
1060 } else {
1061 serv = getservbyname(token, proto_str);
1062 if (serv) {
1063 serv_port = (int) ntohs((uint16_t) serv->s_port);
1064 } else {
1065 serv_port = atoi(token);
1066 }
1067 if (serv_port / 8 >= bm_len) {
1068 uint8_t *b2 = LDNS_XREALLOC(bitmap, uint8_t, (serv_port / 8) + 1);
1069 if(!b2) {
1070 LDNS_FREE(bitmap);
1071 LDNS_FREE(token);
1072 ldns_buffer_free(str_buf);
1073 free(proto_str);
1074 return LDNS_STATUS_INVALID_STR;
1075 }
1076 bitmap = b2;
1077 /* set to zero to be sure */
1078 for (; bm_len <= serv_port / 8; bm_len++) {
1079 bitmap[bm_len] = 0;
1080 }
1081 }
1082 ldns_set_bit(bitmap + (serv_port / 8), 7 - (serv_port % 8), true);
1083 }
1084 }
1085
1086 if (!proto_str || !bitmap) {
1087 LDNS_FREE(bitmap);
1088 LDNS_FREE(token);
1089 ldns_buffer_free(str_buf);
1090 free(proto_str);
1091 return LDNS_STATUS_INVALID_STR;
1092 }
1093
1094 data = LDNS_XMALLOC(uint8_t, bm_len + 1);
1095 if(!data) {
1096 LDNS_FREE(token);
1097 ldns_buffer_free(str_buf);
1098 LDNS_FREE(bitmap);
1099 free(proto_str);
1100 return LDNS_STATUS_INVALID_STR;
1101 }
1102 if (proto_str)
1103 proto = getprotobyname(proto_str);
1104 if (proto) {
1105 data[0] = (uint8_t) proto->p_proto;
1106 } else if (proto_str) {
1107 data[0] = (uint8_t) atoi(proto_str);
1108 }
1109 memcpy(data + 1, bitmap, (size_t) bm_len);
1110
1111 *rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_WKS, (uint16_t) (bm_len + 1), data);
1112
1113 LDNS_FREE(data);
1114 LDNS_FREE(token);
1115 ldns_buffer_free(str_buf);
1116 LDNS_FREE(bitmap);
1117 free(proto_str);
1118 #ifdef HAVE_ENDSERVENT
1119 endservent();
1120 #endif
1121 #ifdef HAVE_ENDPROTOENT
1122 endprotoent();
1123 #endif
1124
1125 if(!*rd) return LDNS_STATUS_MEM_ERR;
1126
1127 return LDNS_STATUS_OK;
1128 }
1129
1130 ldns_status
1131 ldns_str2rdf_nsap(ldns_rdf **rd, const char *str)
1132 {
1133 size_t len, i;
1134 char* nsap_str = (char*) str;
1135
1136 /* just a hex string with optional dots? */
1137 if (str[0] != '0' || str[1] != 'x') {
1138 return LDNS_STATUS_INVALID_STR;
1139 } else {
1140 len = strlen(str);
1141 for (i=0; i < len; i++) {
1142 if (nsap_str[i] == '.')
1143 nsap_str[i] = ' ';
1144 }
1145 return ldns_str2rdf_hex(rd, str+2);
1146 }
1147 }
1148
1149 ldns_status
1150 ldns_str2rdf_atma(ldns_rdf **rd, const char *str)
1151 {
1152 size_t len, i;
1153 char* atma_str = (char*) str;
1154 ldns_status status;
1155
1156 /* just a hex string with optional dots? */
1157 len = strlen(str);
1158 for (i=0; i < len; i++) {
1159 if (atma_str[i] == '.')
1160 atma_str[i] = ' ';
1161 }
1162 status = ldns_str2rdf_hex(rd, str);
1163 if (status != LDNS_STATUS_OK) {
1164 ; /* probably in e.164 format than */
1165 }
1166 return status;
1167 }
1168
1169 ldns_status
1170 ldns_str2rdf_ipseckey(ldns_rdf **rd, const char *str)
1171 {
1172 uint8_t precedence = 0;
1173 uint8_t gateway_type = 0;
1174 uint8_t algorithm = 0;
1175 char* gateway = NULL;
1176 char* publickey = NULL;
1177 uint8_t *data;
1178 ldns_buffer *str_buf;
1179 char *token;
1180 int token_count = 0;
1181 int ipseckey_len = 0;
1182 ldns_rdf* gateway_rdf = NULL;
1183 ldns_rdf* publickey_rdf = NULL;
1184 ldns_status status = LDNS_STATUS_OK;
1185
1186 if(strlen(str) == 0)
1187 token = LDNS_XMALLOC(char, 256);
1188 else token = LDNS_XMALLOC(char, strlen(str)+2);
1189 if(!token) return LDNS_STATUS_MEM_ERR;
1190
1191 str_buf = LDNS_MALLOC(ldns_buffer);
1192 if(!str_buf) {LDNS_FREE(token); return LDNS_STATUS_MEM_ERR;}
1193 ldns_buffer_new_frm_data(str_buf, (char *)str, strlen(str));
1194 if(ldns_buffer_status(str_buf) != LDNS_STATUS_OK) {
1195 LDNS_FREE(str_buf);
1196 LDNS_FREE(token);
1197 return LDNS_STATUS_MEM_ERR;
1198 }
1199 while(ldns_bget_token(str_buf, token, "\t\n ", strlen(str)) > 0) {
1200 switch (token_count) {
1201 case 0:
1202 precedence = (uint8_t)atoi(token);
1203 break;
1204 case 1:
1205 gateway_type = (uint8_t)atoi(token);
1206 break;
1207 case 2:
1208 algorithm = (uint8_t)atoi(token);
1209 break;
1210 case 3:
1211 gateway = strdup(token);
1212 if (!gateway || (gateway_type == 0 &&
1213 (token[0] != '.' || token[1] != '\0'))) {
1214 LDNS_FREE(gateway);
1215 LDNS_FREE(token);
1216 ldns_buffer_free(str_buf);
1217 return LDNS_STATUS_INVALID_STR;
1218 }
1219 break;
1220 case 4:
1221 publickey = strdup(token);
1222 break;
1223 default:
1224 LDNS_FREE(token);
1225 ldns_buffer_free(str_buf);
1226 return LDNS_STATUS_INVALID_STR;
1227 break;
1228 }
1229 token_count++;
1230 }
1231
1232 if (!gateway || !publickey) {
1233 if (gateway)
1234 LDNS_FREE(gateway);
1235 if (publickey)
1236 LDNS_FREE(publickey);
1237 LDNS_FREE(token);
1238 ldns_buffer_free(str_buf);
1239 return LDNS_STATUS_INVALID_STR;
1240 }
1241
1242 if (gateway_type == 1) {
1243 status = ldns_str2rdf_a(&gateway_rdf, gateway);
1244 } else if (gateway_type == 2) {
1245 status = ldns_str2rdf_aaaa(&gateway_rdf, gateway);
1246 } else if (gateway_type == 3) {
1247 status = ldns_str2rdf_dname(&gateway_rdf, gateway);
1248 }
1249
1250 if (status != LDNS_STATUS_OK) {
1251 if (gateway)
1252 LDNS_FREE(gateway);
1253 if (publickey)
1254 LDNS_FREE(publickey);
1255 LDNS_FREE(token);
1256 ldns_buffer_free(str_buf);
1257 return LDNS_STATUS_INVALID_STR;
1258 }
1259
1260 status = ldns_str2rdf_b64(&publickey_rdf, publickey);
1261
1262 if (status != LDNS_STATUS_OK) {
1263 if (gateway)
1264 LDNS_FREE(gateway);
1265 if (publickey)
1266 LDNS_FREE(publickey);
1267 LDNS_FREE(token);
1268 ldns_buffer_free(str_buf);
1269 if (gateway_rdf) ldns_rdf_free(gateway_rdf);
1270 return LDNS_STATUS_INVALID_STR;
1271 }
1272
1273 /* now copy all into one ipseckey rdf */
1274 if (gateway_type)
1275 ipseckey_len = 3 + (int)ldns_rdf_size(gateway_rdf) + (int)ldns_rdf_size(publickey_rdf);
1276 else
1277 ipseckey_len = 3 + (int)ldns_rdf_size(publickey_rdf);
1278
1279 data = LDNS_XMALLOC(uint8_t, ipseckey_len);
1280 if(!data) {
1281 if (gateway)
1282 LDNS_FREE(gateway);
1283 if (publickey)
1284 LDNS_FREE(publickey);
1285 LDNS_FREE(token);
1286 ldns_buffer_free(str_buf);
1287 if (gateway_rdf) ldns_rdf_free(gateway_rdf);
1288 if (publickey_rdf) ldns_rdf_free(publickey_rdf);
1289 return LDNS_STATUS_MEM_ERR;
1290 }
1291
1292 data[0] = precedence;
1293 data[1] = gateway_type;
1294 data[2] = algorithm;
1295
1296 if (gateway_type) {
1297 memcpy(data + 3,
1298 ldns_rdf_data(gateway_rdf), ldns_rdf_size(gateway_rdf));
1299 memcpy(data + 3 + ldns_rdf_size(gateway_rdf),
1300 ldns_rdf_data(publickey_rdf), ldns_rdf_size(publickey_rdf));
1301 } else {
1302 memcpy(data + 3,
1303 ldns_rdf_data(publickey_rdf), ldns_rdf_size(publickey_rdf));
1304 }
1305
1306 *rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_IPSECKEY, (uint16_t) ipseckey_len, data);
1307
1308 if (gateway)
1309 LDNS_FREE(gateway);
1310 if (publickey)
1311 LDNS_FREE(publickey);
1312 LDNS_FREE(token);
1313 ldns_buffer_free(str_buf);
1314 ldns_rdf_free(gateway_rdf);
1315 ldns_rdf_free(publickey_rdf);
1316 LDNS_FREE(data);
1317 if(!*rd) return LDNS_STATUS_MEM_ERR;
1318 return LDNS_STATUS_OK;
1319 }
DragonFly BSD