1 /*
2 +----------------------------------------------------------------------+
3 | Copyright (c) The PHP Group |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.01 of the PHP license, |
6 | that is bundled with this package in the file LICENSE, and is |
7 | available through the world-wide-web at the following url: |
8 | http://www.php.net/license/3_01.txt |
9 | If you did not receive a copy of the PHP license and are unable to |
10 | obtain it through the world-wide-web, please send a note to |
11 | license@php.net so we can mail you a copy immediately. |
12 +----------------------------------------------------------------------+
13 | Authors: Pierre A. Joye <pierre@php.net> |
14 +----------------------------------------------------------------------+
15 */
16
17 #include "php.h"
18
19 #include <windows.h>
20 #include <Winbase.h >
21 #include <Windns.h>
22
23 #include "php_dns.h"
24
25 #define PHP_DNS_NUM_TYPES 12 /* Number of DNS Types Supported by PHP currently */
26
27 #define PHP_DNS_A 0x00000001
28 #define PHP_DNS_NS 0x00000002
29 #define PHP_DNS_CNAME 0x00000010
30 #define PHP_DNS_SOA 0x00000020
31 #define PHP_DNS_PTR 0x00000800
32 #define PHP_DNS_HINFO 0x00001000
33 #define PHP_DNS_MX 0x00004000
34 #define PHP_DNS_TXT 0x00008000
35 #define PHP_DNS_A6 0x01000000
36 #define PHP_DNS_SRV 0x02000000
37 #define PHP_DNS_NAPTR 0x04000000
38 #define PHP_DNS_AAAA 0x08000000
39 #define PHP_DNS_ANY 0x10000000
40 #define PHP_DNS_ALL (PHP_DNS_A|PHP_DNS_NS|PHP_DNS_CNAME|PHP_DNS_SOA|PHP_DNS_PTR|PHP_DNS_HINFO|PHP_DNS_MX|PHP_DNS_TXT|PHP_DNS_A6|PHP_DNS_SRV|PHP_DNS_NAPTR|PHP_DNS_AAAA)
41
PHP_FUNCTION(dns_get_mx)42 PHP_FUNCTION(dns_get_mx) /* {{{ */
43 {
44 char *hostname;
45 size_t hostname_len;
46 zval *mx_list, *weight_list = NULL;
47
48 DNS_STATUS status; /* Return value of DnsQuery_A() function */
49 PDNS_RECORD pResult, pRec; /* Pointer to DNS_RECORD structure */
50
51 if (zend_parse_parameters(ZEND_NUM_ARGS(), "sz|z", &hostname, &hostname_len, &mx_list, &weight_list) == FAILURE) {
52 RETURN_THROWS();
53 }
54
55 status = DnsQuery_A(hostname, DNS_TYPE_MX, DNS_QUERY_STANDARD, NULL, &pResult, NULL);
56
57 if (status) {
58 RETURN_FALSE;
59 }
60
61 mx_list = zend_try_array_init(mx_list);
62 if (!mx_list) {
63 goto cleanup;
64 }
65
66 if (weight_list) {
67 weight_list = zend_try_array_init(weight_list);
68 if (!weight_list) {
69 goto cleanup;
70 }
71 }
72
73 for (pRec = pResult; pRec; pRec = pRec->pNext) {
74 DNS_SRV_DATA *srv = &pRec->Data.Srv;
75
76 if (pRec->wType != DNS_TYPE_MX) {
77 continue;
78 }
79
80 add_next_index_string(mx_list, pRec->Data.MX.pNameExchange);
81 if (weight_list) {
82 add_next_index_long(weight_list, srv->wPriority);
83 }
84 }
85
86 cleanup:
87 /* Free memory allocated for DNS records. */
88 DnsRecordListFree(pResult, DnsFreeRecordListDeep);
89
90 RETURN_TRUE;
91 }
92 /* }}} */
93
94 /* {{{ Check DNS records corresponding to a given Internet host name or IP address */
PHP_FUNCTION(dns_check_record)95 PHP_FUNCTION(dns_check_record)
96 {
97 char *hostname, *rectype = NULL;
98 size_t hostname_len, rectype_len = 0;
99 int type = DNS_TYPE_MX;
100
101 DNS_STATUS status; /* Return value of DnsQuery_A() function */
102 PDNS_RECORD pResult; /* Pointer to DNS_RECORD structure */
103
104 if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|s", &hostname, &hostname_len, &rectype, &rectype_len) == FAILURE) {
105 RETURN_THROWS();
106 }
107
108 if (hostname_len == 0) {
109 zend_argument_value_error(1, "cannot be empty");
110 RETURN_THROWS();
111 }
112
113 if (rectype) {
114 if (!strcasecmp("A", rectype)) type = DNS_TYPE_A;
115 else if (!strcasecmp("NS", rectype)) type = DNS_TYPE_NS;
116 else if (!strcasecmp("MX", rectype)) type = DNS_TYPE_MX;
117 else if (!strcasecmp("PTR", rectype)) type = DNS_TYPE_PTR;
118 else if (!strcasecmp("ANY", rectype)) type = DNS_TYPE_ANY;
119 else if (!strcasecmp("SOA", rectype)) type = DNS_TYPE_SOA;
120 else if (!strcasecmp("TXT", rectype)) type = DNS_TYPE_TEXT;
121 else if (!strcasecmp("CNAME", rectype)) type = DNS_TYPE_CNAME;
122 else if (!strcasecmp("AAAA", rectype)) type = DNS_TYPE_AAAA;
123 else if (!strcasecmp("SRV", rectype)) type = DNS_TYPE_SRV;
124 else if (!strcasecmp("NAPTR", rectype)) type = DNS_TYPE_NAPTR;
125 else if (!strcasecmp("A6", rectype)) type = DNS_TYPE_A6;
126 else {
127 zend_argument_value_error(2, "must be a valid DNS record type");
128 RETURN_THROWS();
129 }
130 }
131
132 status = DnsQuery_A(hostname, type, DNS_QUERY_STANDARD, NULL, &pResult, NULL);
133
134 if (status) {
135 RETURN_FALSE;
136 }
137
138 RETURN_TRUE;
139 }
140 /* }}} */
141
142 /* {{{ php_parserr */
php_parserr(PDNS_RECORD pRec,int type_to_fetch,int store,int raw,zval * subarray)143 static void php_parserr(PDNS_RECORD pRec, int type_to_fetch, int store, int raw, zval *subarray)
144 {
145 int type;
146 u_long ttl;
147
148 type = pRec->wType;
149 ttl = pRec->dwTtl;
150
151 ZVAL_UNDEF(subarray);
152
153 if (type_to_fetch != DNS_TYPE_ANY && type != type_to_fetch) {
154 return;
155 }
156
157 if (!store) {
158 return;
159 }
160
161 array_init(subarray);
162
163 add_assoc_string(subarray, "host", pRec->pName);
164 add_assoc_string(subarray, "class", "IN");
165 add_assoc_long(subarray, "ttl", ttl);
166
167 if (raw) {
168 add_assoc_long(subarray, "type", type);
169 add_assoc_stringl(subarray, "data", (char*) &pRec->Data, (uint32_t) pRec->wDataLength);
170 return;
171 }
172
173 switch (type) {
174 case DNS_TYPE_A: {
175 IN_ADDR ipaddr;
176 ipaddr.S_un.S_addr = (pRec->Data.A.IpAddress);
177 add_assoc_string(subarray, "type", "A");
178 add_assoc_string(subarray, "ip", inet_ntoa(ipaddr));
179 break;
180 }
181
182 case DNS_TYPE_MX:
183 add_assoc_string(subarray, "type", "MX");
184 add_assoc_long(subarray, "pri", pRec->Data.Srv.wPriority);
185 /* no break; */
186
187 case DNS_TYPE_CNAME:
188 if (type == DNS_TYPE_CNAME) {
189 add_assoc_string(subarray, "type", "CNAME");
190 }
191 /* no break; */
192
193 case DNS_TYPE_NS:
194 if (type == DNS_TYPE_NS) {
195 add_assoc_string(subarray, "type", "NS");
196 }
197 /* no break; */
198
199 case DNS_TYPE_PTR:
200 if (type == DNS_TYPE_PTR) {
201 add_assoc_string(subarray, "type", "PTR");
202 }
203 add_assoc_string(subarray, "target", pRec->Data.MX.pNameExchange);
204 break;
205
206 /* Not available on windows, the query is possible but there is no DNS_HINFO_DATA structure */
207 case DNS_TYPE_HINFO:
208 case DNS_TYPE_TEXT:
209 {
210 DWORD i = 0;
211 DNS_TXT_DATA *data_txt = &pRec->Data.TXT;
212 DWORD count = data_txt->dwStringCount;
213 zend_string *txt;
214 char *txt_dst;
215 size_t txt_len = 0;
216 zval entries;
217
218 add_assoc_string(subarray, "type", "TXT");
219
220 array_init(&entries);
221
222 for (i = 0; i < count; i++) {
223 txt_len += strlen(data_txt->pStringArray[i]);
224 }
225
226 txt = zend_string_alloc(txt_len, 0);
227 txt_dst = ZSTR_VAL(txt);
228 for (i = 0; i < count; i++) {
229 size_t len = strlen(data_txt->pStringArray[i]);
230 memcpy(txt_dst, data_txt->pStringArray[i], len);
231 add_next_index_stringl(&entries, data_txt->pStringArray[i], len);
232 txt_dst += len;
233 }
234 *txt_dst = '\0';
235 add_assoc_str(subarray, "txt", txt);
236 add_assoc_zval(subarray, "entries", &entries);
237 }
238 break;
239
240 case DNS_TYPE_SOA:
241 {
242 DNS_SOA_DATA *data_soa = &pRec->Data.Soa;
243
244 add_assoc_string(subarray, "type", "SOA");
245
246 add_assoc_string(subarray, "mname", data_soa->pNamePrimaryServer);
247 add_assoc_string(subarray, "rname", data_soa->pNameAdministrator);
248 add_assoc_long(subarray, "serial", data_soa->dwSerialNo);
249 add_assoc_long(subarray, "refresh", data_soa->dwRefresh);
250 add_assoc_long(subarray, "retry", data_soa->dwRetry);
251 add_assoc_long(subarray, "expire", data_soa->dwExpire);
252 add_assoc_long(subarray, "minimum-ttl", data_soa->dwDefaultTtl);
253 }
254 break;
255
256 case DNS_TYPE_AAAA:
257 {
258 DNS_AAAA_DATA *data_aaaa = &pRec->Data.AAAA;
259 char buf[sizeof("AAAA:AAAA:AAAA:AAAA:AAAA:AAAA:AAAA:AAAA")];
260 char *tp = buf;
261 int i;
262 unsigned short out[8];
263 int have_v6_break = 0, in_v6_break = 0;
264
265 for (i = 0; i < 4; ++i) {
266 DWORD chunk = data_aaaa->Ip6Address.IP6Dword[i];
267 out[i * 2] = htons(LOWORD(chunk));
268 out[i * 2 + 1] = htons(HIWORD(chunk));
269 }
270
271 for(i=0; i < 8; i++) {
272 if (out[i] != 0) {
273 if (tp > (u_char *)buf) {
274 in_v6_break = 0;
275 tp[0] = ':';
276 tp++;
277 }
278 tp += sprintf((char*)tp,"%x", out[i]);
279 } else {
280 if (!have_v6_break) {
281 have_v6_break = 1;
282 in_v6_break = 1;
283 tp[0] = ':';
284 tp++;
285 } else if (!in_v6_break) {
286 tp[0] = ':';
287 tp++;
288 tp[0] = '0';
289 tp++;
290 }
291 }
292 }
293
294 if (have_v6_break && in_v6_break) {
295 tp[0] = ':';
296 tp++;
297 }
298 tp[0] = '\0';
299
300 add_assoc_string(subarray, "type", "AAAA");
301 add_assoc_string(subarray, "ipv6", buf);
302 }
303 break;
304
305 #if 0
306 /* Won't be implemented. A6 is deprecated. (Pierre) */
307 case DNS_TYPE_A6:
308 break;
309 #endif
310
311 case DNS_TYPE_SRV:
312 {
313 DNS_SRV_DATA *data_srv = &pRec->Data.Srv;
314
315 add_assoc_string(subarray, "type", "SRV");
316 add_assoc_long(subarray, "pri", data_srv->wPriority);
317 add_assoc_long(subarray, "weight", data_srv->wWeight);
318 add_assoc_long(subarray, "port", data_srv->wPort);
319 add_assoc_string(subarray, "target", data_srv->pNameTarget);
320 }
321 break;
322
323 case DNS_TYPE_NAPTR:
324 {
325 DNS_NAPTR_DATA * data_naptr = &pRec->Data.Naptr;
326
327 add_assoc_string(subarray, "type", "NAPTR");
328 add_assoc_long(subarray, "order", data_naptr->wOrder);
329 add_assoc_long(subarray, "pref", data_naptr->wPreference);
330 add_assoc_string(subarray, "flags", data_naptr->pFlags);
331 add_assoc_string(subarray, "services", data_naptr->pService);
332 add_assoc_string(subarray, "regex", data_naptr->pRegularExpression);
333 add_assoc_string(subarray, "replacement", data_naptr->pReplacement);
334 }
335 break;
336
337 default:
338 /* unknown type */
339 ZVAL_UNDEF(subarray);
340 return;
341 }
342
343 }
344 /* }}} */
345
346 /* {{{ Get any Resource Record corresponding to a given Internet host name */
PHP_FUNCTION(dns_get_record)347 PHP_FUNCTION(dns_get_record)
348 {
349 char *hostname;
350 size_t hostname_len;
351 zend_long type_param = PHP_DNS_ANY;
352 zval *authns = NULL, *addtl = NULL;
353 int type, type_to_fetch, first_query = 1, store_results = 1;
354 zend_bool raw = 0;
355
356 if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|lz!z!b",
357 &hostname, &hostname_len, &type_param, &authns, &addtl, &raw) == FAILURE) {
358 RETURN_THROWS();
359 }
360
361 if (authns) {
362 authns = zend_try_array_init(authns);
363 if (!authns) {
364 RETURN_THROWS();
365 }
366 }
367 if (addtl) {
368 addtl = zend_try_array_init(addtl);
369 if (!addtl) {
370 RETURN_THROWS();
371 }
372 }
373
374 if (!raw) {
375 if ((type_param & ~PHP_DNS_ALL) && (type_param != PHP_DNS_ANY)) {
376 zend_argument_value_error(2, "must be a DNS_* constant");
377 RETURN_THROWS();
378 }
379 } else {
380 if ((type_param < 1) || (type_param > 0xFFFF)) {
381 zend_argument_value_error(2, "must be between 1 and 65535 when argument #5 ($raw) is true");
382 RETURN_THROWS();
383 }
384 }
385
386 /* Initialize the return array */
387 array_init(return_value);
388
389 if (raw) {
390 type = -1;
391 } else if (type_param == PHP_DNS_ANY) {
392 type = PHP_DNS_NUM_TYPES + 1;
393 } else {
394 type = 0;
395 }
396
397 for ( ;
398 type < (addtl ? (PHP_DNS_NUM_TYPES + 2) : PHP_DNS_NUM_TYPES) || first_query;
399 type++
400 ) {
401 DNS_STATUS status; /* Return value of DnsQuery_A() function */
402 PDNS_RECORD pResult, pRec; /* Pointer to DNS_RECORD structure */
403
404 first_query = 0;
405 switch (type) {
406 case -1: /* raw */
407 type_to_fetch = type_param;
408 /* skip over the rest and go directly to additional records */
409 type = PHP_DNS_NUM_TYPES - 1;
410 break;
411 case 0:
412 type_to_fetch = type_param&PHP_DNS_A ? DNS_TYPE_A : 0;
413 break;
414 case 1:
415 type_to_fetch = type_param&PHP_DNS_NS ? DNS_TYPE_NS : 0;
416 break;
417 case 2:
418 type_to_fetch = type_param&PHP_DNS_CNAME ? DNS_TYPE_CNAME : 0;
419 break;
420 case 3:
421 type_to_fetch = type_param&PHP_DNS_SOA ? DNS_TYPE_SOA : 0;
422 break;
423 case 4:
424 type_to_fetch = type_param&PHP_DNS_PTR ? DNS_TYPE_PTR : 0;
425 break;
426 case 5:
427 type_to_fetch = type_param&PHP_DNS_HINFO ? DNS_TYPE_HINFO : 0;
428 break;
429 case 6:
430 type_to_fetch = type_param&PHP_DNS_MX ? DNS_TYPE_MX : 0;
431 break;
432 case 7:
433 type_to_fetch = type_param&PHP_DNS_TXT ? DNS_TYPE_TEXT : 0;
434 break;
435 case 8:
436 type_to_fetch = type_param&PHP_DNS_AAAA ? DNS_TYPE_AAAA : 0;
437 break;
438 case 9:
439 type_to_fetch = type_param&PHP_DNS_SRV ? DNS_TYPE_SRV : 0;
440 break;
441 case 10:
442 type_to_fetch = type_param&PHP_DNS_NAPTR ? DNS_TYPE_NAPTR : 0;
443 break;
444 case 11:
445 type_to_fetch = type_param&PHP_DNS_A6 ? DNS_TYPE_A6 : 0;
446 break;
447 case PHP_DNS_NUM_TYPES:
448 store_results = 0;
449 continue;
450 default:
451 case (PHP_DNS_NUM_TYPES + 1):
452 type_to_fetch = DNS_TYPE_ANY;
453 break;
454 }
455
456 if (type_to_fetch) {
457 status = DnsQuery_A(hostname, type_to_fetch, DNS_QUERY_STANDARD, NULL, &pResult, NULL);
458
459 if (status) {
460 if (status == DNS_INFO_NO_RECORDS || status == DNS_ERROR_RCODE_NAME_ERROR) {
461 continue;
462 } else {
463 php_error_docref(NULL, E_WARNING, "DNS Query failed");
464 zend_array_destroy(Z_ARR_P(return_value));
465 RETURN_FALSE;
466 }
467 }
468
469 for (pRec = pResult; pRec; pRec = pRec->pNext) {
470 zval retval;
471
472 if (pRec->Flags.S.Section == DnsSectionAnswer) {
473 php_parserr(pRec, type_to_fetch, store_results, raw, &retval);
474 if (!Z_ISUNDEF(retval) && store_results) {
475 add_next_index_zval(return_value, &retval);
476 }
477 }
478
479 if (authns && pRec->Flags.S.Section == DnsSectionAuthority) {
480
481 php_parserr(pRec, type_to_fetch, 1, raw, &retval);
482 if (!Z_ISUNDEF(retval)) {
483 add_next_index_zval(authns, &retval);
484 }
485 }
486
487 /* Stupid typo in PSDK 6.1, WinDNS.h(1258)... */
488 #ifndef DnsSectionAdditional
489 # ifdef DnsSectionAddtional
490 # define DnsSectionAdditional DnsSectionAddtional
491 # else
492 # define DnsSectionAdditional 3
493 # endif
494 #endif
495 if (addtl && pRec->Flags.S.Section == DnsSectionAdditional) {
496 php_parserr(pRec, type_to_fetch, 1, raw, &retval);
497 if (!Z_ISUNDEF(retval)) {
498 add_next_index_zval(addtl, &retval);
499 }
500 }
501 }
502 /* Free memory allocated for DNS records. */
503 DnsRecordListFree(pResult, DnsFreeRecordListDeep);
504 }
505 }
506 }
507 /* }}} */
508
PHP_MINIT_FUNCTION(dns)509 PHP_MINIT_FUNCTION(dns) {
510 REGISTER_LONG_CONSTANT("DNS_A", PHP_DNS_A, CONST_CS | CONST_PERSISTENT);
511 REGISTER_LONG_CONSTANT("DNS_NS", PHP_DNS_NS, CONST_CS | CONST_PERSISTENT);
512 REGISTER_LONG_CONSTANT("DNS_CNAME", PHP_DNS_CNAME, CONST_CS | CONST_PERSISTENT);
513 REGISTER_LONG_CONSTANT("DNS_SOA", PHP_DNS_SOA, CONST_CS | CONST_PERSISTENT);
514 REGISTER_LONG_CONSTANT("DNS_PTR", PHP_DNS_PTR, CONST_CS | CONST_PERSISTENT);
515 REGISTER_LONG_CONSTANT("DNS_HINFO", PHP_DNS_HINFO, CONST_CS | CONST_PERSISTENT);
516 REGISTER_LONG_CONSTANT("DNS_MX", PHP_DNS_MX, CONST_CS | CONST_PERSISTENT);
517 REGISTER_LONG_CONSTANT("DNS_TXT", PHP_DNS_TXT, CONST_CS | CONST_PERSISTENT);
518 REGISTER_LONG_CONSTANT("DNS_SRV", PHP_DNS_SRV, CONST_CS | CONST_PERSISTENT);
519 REGISTER_LONG_CONSTANT("DNS_NAPTR", PHP_DNS_NAPTR, CONST_CS | CONST_PERSISTENT);
520 REGISTER_LONG_CONSTANT("DNS_AAAA", PHP_DNS_AAAA, CONST_CS | CONST_PERSISTENT);
521 REGISTER_LONG_CONSTANT("DNS_A6", PHP_DNS_A6, CONST_CS | CONST_PERSISTENT);
522 REGISTER_LONG_CONSTANT("DNS_ANY", PHP_DNS_ANY, CONST_CS | CONST_PERSISTENT);
523 REGISTER_LONG_CONSTANT("DNS_ALL", PHP_DNS_ALL, CONST_CS | CONST_PERSISTENT);
524 return SUCCESS;
525 }
526
