1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 2008-2017 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Pierre A. Joye <pierre@php.net> |
16 +----------------------------------------------------------------------+
17 */
18
19 #include "php.h"
20
21 #include <windows.h>
22 #include <Winbase.h >
23 #include <Windns.h>
24
25 #include "php_dns.h"
26
27 #define PHP_DNS_NUM_TYPES 12 /* Number of DNS Types Supported by PHP currently */
28
29 #define PHP_DNS_A 0x00000001
30 #define PHP_DNS_NS 0x00000002
31 #define PHP_DNS_CNAME 0x00000010
32 #define PHP_DNS_SOA 0x00000020
33 #define PHP_DNS_PTR 0x00000800
34 #define PHP_DNS_HINFO 0x00001000
35 #define PHP_DNS_MX 0x00004000
36 #define PHP_DNS_TXT 0x00008000
37 #define PHP_DNS_A6 0x01000000
38 #define PHP_DNS_SRV 0x02000000
39 #define PHP_DNS_NAPTR 0x04000000
40 #define PHP_DNS_AAAA 0x08000000
41 #define PHP_DNS_ANY 0x10000000
42 #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)
43
PHP_FUNCTION(dns_get_mx)44 PHP_FUNCTION(dns_get_mx) /* {{{ */
45 {
46 char *hostname;
47 size_t hostname_len;
48 zval *mx_list, *weight_list = NULL;
49
50 DNS_STATUS status; /* Return value of DnsQuery_A() function */
51 PDNS_RECORD pResult, pRec; /* Pointer to DNS_RECORD structure */
52
53 if (zend_parse_parameters(ZEND_NUM_ARGS(), "sz/|z/", &hostname, &hostname_len, &mx_list, &weight_list) == FAILURE) {
54 return;
55 }
56
57 status = DnsQuery_A(hostname, DNS_TYPE_MX, DNS_QUERY_STANDARD, NULL, &pResult, NULL);
58
59 if (status) {
60 RETURN_FALSE;
61 }
62
63 zval_dtor(mx_list);
64 array_init(mx_list);
65
66 if (weight_list) {
67 zval_dtor(weight_list);
68 array_init(weight_list);
69 }
70
71 for (pRec = pResult; pRec; pRec = pRec->pNext) {
72 DNS_SRV_DATA *srv = &pRec->Data.Srv;
73
74 if (pRec->wType != DNS_TYPE_MX) {
75 continue;
76 }
77
78 add_next_index_string(mx_list, pRec->Data.MX.pNameExchange);
79 if (weight_list) {
80 add_next_index_long(weight_list, srv->wPriority);
81 }
82 }
83
84 /* Free memory allocated for DNS records. */
85 DnsRecordListFree(pResult, DnsFreeRecordListDeep);
86
87 RETURN_TRUE;
88 }
89 /* }}} */
90
91 /* {{{ proto bool dns_check_record(string host [, string type])
92 Check DNS records corresponding to a given Internet host name or IP address */
PHP_FUNCTION(dns_check_record)93 PHP_FUNCTION(dns_check_record)
94 {
95 char *hostname, *rectype = NULL;
96 size_t hostname_len, rectype_len = 0;
97 int type = DNS_TYPE_MX;
98
99 DNS_STATUS status; /* Return value of DnsQuery_A() function */
100 PDNS_RECORD pResult; /* Pointer to DNS_RECORD structure */
101
102 if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|s", &hostname, &hostname_len, &rectype, &rectype_len) == FAILURE) {
103 return;
104 }
105
106 if (hostname_len == 0) {
107 php_error_docref(NULL, E_WARNING, "Host cannot be empty");
108 RETURN_FALSE;
109 }
110
111 if (rectype) {
112 if (!strcasecmp("A", rectype)) type = DNS_TYPE_A;
113 else if (!strcasecmp("NS", rectype)) type = DNS_TYPE_NS;
114 else if (!strcasecmp("MX", rectype)) type = DNS_TYPE_MX;
115 else if (!strcasecmp("PTR", rectype)) type = DNS_TYPE_PTR;
116 else if (!strcasecmp("ANY", rectype)) type = DNS_TYPE_ANY;
117 else if (!strcasecmp("SOA", rectype)) type = DNS_TYPE_SOA;
118 else if (!strcasecmp("TXT", rectype)) type = DNS_TYPE_TEXT;
119 else if (!strcasecmp("CNAME", rectype)) type = DNS_TYPE_CNAME;
120 else if (!strcasecmp("AAAA", rectype)) type = DNS_TYPE_AAAA;
121 else if (!strcasecmp("SRV", rectype)) type = DNS_TYPE_SRV;
122 else if (!strcasecmp("NAPTR", rectype)) type = DNS_TYPE_NAPTR;
123 else if (!strcasecmp("A6", rectype)) type = DNS_TYPE_A6;
124 else {
125 php_error_docref(NULL, E_WARNING, "Type '%s' not supported", rectype);
126 RETURN_FALSE;
127 }
128 }
129
130 status = DnsQuery_A(hostname, type, DNS_QUERY_STANDARD, NULL, &pResult, NULL);
131
132 if (status) {
133 RETURN_FALSE;
134 }
135
136 RETURN_TRUE;
137 }
138 /* }}} */
139
140 /* {{{ php_parserr */
php_parserr(PDNS_RECORD pRec,int type_to_fetch,int store,int raw,zval * subarray)141 static void php_parserr(PDNS_RECORD pRec, int type_to_fetch, int store, int raw, zval *subarray)
142 {
143 int type;
144 u_long ttl;
145
146 type = pRec->wType;
147 ttl = pRec->dwTtl;
148
149 ZVAL_UNDEF(subarray);
150
151 if (type_to_fetch != DNS_TYPE_ANY && type != type_to_fetch) {
152 return;
153 }
154
155 if (!store) {
156 return;
157 }
158
159 array_init(subarray);
160
161 add_assoc_string(subarray, "host", pRec->pName);
162 add_assoc_string(subarray, "class", "IN");
163 add_assoc_long(subarray, "ttl", ttl);
164
165 if (raw) {
166 add_assoc_long(subarray, "type", type);
167 add_assoc_stringl(subarray, "data", (char*) &pRec->Data, (uint) pRec->wDataLength);
168 return;
169 }
170
171 switch (type) {
172 case DNS_TYPE_A: {
173 IN_ADDR ipaddr;
174 ipaddr.S_un.S_addr = (pRec->Data.A.IpAddress);
175 add_assoc_string(subarray, "type", "A");
176 add_assoc_string(subarray, "ip", inet_ntoa(ipaddr));
177 break;
178 }
179
180 case DNS_TYPE_MX:
181 add_assoc_string(subarray, "type", "MX");
182 add_assoc_long(subarray, "pri", pRec->Data.Srv.wPriority);
183 /* no break; */
184
185 case DNS_TYPE_CNAME:
186 if (type == DNS_TYPE_CNAME) {
187 add_assoc_string(subarray, "type", "CNAME");
188 }
189 /* no break; */
190
191 case DNS_TYPE_NS:
192 if (type == DNS_TYPE_NS) {
193 add_assoc_string(subarray, "type", "NS");
194 }
195 /* no break; */
196
197 case DNS_TYPE_PTR:
198 if (type == DNS_TYPE_PTR) {
199 add_assoc_string(subarray, "type", "PTR");
200 }
201 add_assoc_string(subarray, "target", pRec->Data.MX.pNameExchange);
202 break;
203
204 /* Not available on windows, the query is possible but there is no DNS_HINFO_DATA structure */
205 case DNS_TYPE_HINFO:
206 case DNS_TYPE_TEXT:
207 {
208 DWORD i = 0;
209 DNS_TXT_DATA *data_txt = &pRec->Data.TXT;
210 DWORD count = data_txt->dwStringCount;
211 zend_string *txt;
212 char *txt_dst;
213 size_t txt_len = 0;
214 zval entries;
215
216 add_assoc_string(subarray, "type", "TXT");
217
218 array_init(&entries);
219
220 for (i = 0; i < count; i++) {
221 txt_len += strlen(data_txt->pStringArray[i]) + 1;
222 }
223
224 txt = zend_string_safe_alloc(txt_len, 2, 0, 0);
225 txt_dst = txt->val;
226 for (i = 0; i < count; i++) {
227 size_t len = strlen(data_txt->pStringArray[i]);
228 memcpy(txt_dst, data_txt->pStringArray[i], len);
229 add_next_index_stringl(&entries, data_txt->pStringArray[i], len);
230 txt_dst += len;
231 }
232 txt->len = txt_dst - txt->val;
233 add_assoc_str(subarray, "txt", txt);
234 add_assoc_zval(subarray, "entries", &entries);
235 }
236 break;
237
238 case DNS_TYPE_SOA:
239 {
240 DNS_SOA_DATA *data_soa = &pRec->Data.Soa;
241
242 add_assoc_string(subarray, "type", "SOA");
243
244 add_assoc_string(subarray, "mname", data_soa->pNamePrimaryServer);
245 add_assoc_string(subarray, "rname", data_soa->pNameAdministrator);
246 add_assoc_long(subarray, "serial", data_soa->dwSerialNo);
247 add_assoc_long(subarray, "refresh", data_soa->dwRefresh);
248 add_assoc_long(subarray, "retry", data_soa->dwRetry);
249 add_assoc_long(subarray, "expire", data_soa->dwExpire);
250 add_assoc_long(subarray, "minimum-ttl", data_soa->dwDefaultTtl);
251 }
252 break;
253
254 case DNS_TYPE_AAAA:
255 {
256 DNS_AAAA_DATA *data_aaaa = &pRec->Data.AAAA;
257 char buf[sizeof("AAAA:AAAA:AAAA:AAAA:AAAA:AAAA:AAAA:AAAA")];
258 char *tp = buf;
259 int i;
260 unsigned short out[8];
261 int have_v6_break = 0, in_v6_break = 0;
262
263 for (i = 0; i < 4; ++i) {
264 DWORD chunk = data_aaaa->Ip6Address.IP6Dword[i];
265 out[i * 2] = htons(LOWORD(chunk));
266 out[i * 2 + 1] = htons(HIWORD(chunk));
267 }
268
269 for(i=0; i < 8; i++) {
270 if (out[i] != 0) {
271 if (tp > (u_char *)buf) {
272 in_v6_break = 0;
273 tp[0] = ':';
274 tp++;
275 }
276 tp += sprintf((char*)tp,"%x", out[i]);
277 } else {
278 if (!have_v6_break) {
279 have_v6_break = 1;
280 in_v6_break = 1;
281 tp[0] = ':';
282 tp++;
283 } else if (!in_v6_break) {
284 tp[0] = ':';
285 tp++;
286 tp[0] = '0';
287 tp++;
288 }
289 }
290 }
291
292 if (have_v6_break && in_v6_break) {
293 tp[0] = ':';
294 tp++;
295 }
296 tp[0] = '\0';
297
298 add_assoc_string(subarray, "type", "AAAA");
299 add_assoc_string(subarray, "ipv6", buf);
300 }
301 break;
302
303 #if 0
304 /* Won't be implemented. A6 is deprecated. (Pierre) */
305 case DNS_TYPE_A6:
306 break;
307 #endif
308
309 case DNS_TYPE_SRV:
310 {
311 DNS_SRV_DATA *data_srv = &pRec->Data.Srv;
312
313 add_assoc_string(subarray, "type", "SRV");
314 add_assoc_long(subarray, "pri", data_srv->wPriority);
315 add_assoc_long(subarray, "weight", data_srv->wWeight);
316 add_assoc_long(subarray, "port", data_srv->wPort);
317 add_assoc_string(subarray, "target", data_srv->pNameTarget);
318 }
319 break;
320
321 case DNS_TYPE_NAPTR:
322 {
323 DNS_NAPTR_DATA * data_naptr = &pRec->Data.Naptr;
324
325 add_assoc_string(subarray, "type", "NAPTR");
326 add_assoc_long(subarray, "order", data_naptr->wOrder);
327 add_assoc_long(subarray, "pref", data_naptr->wPreference);
328 add_assoc_string(subarray, "flags", data_naptr->pFlags);
329 add_assoc_string(subarray, "services", data_naptr->pService);
330 add_assoc_string(subarray, "regex", data_naptr->pRegularExpression);
331 add_assoc_string(subarray, "replacement", data_naptr->pReplacement);
332 }
333 break;
334
335 default:
336 /* unknown type */
337 ZVAL_UNDEF(subarray);
338 return;
339 }
340
341 }
342 /* }}} */
343
344 /* {{{ proto array|false dns_get_record(string hostname [, int type[, array &authns[, array &addtl[, bool raw]]]])
345 Get any Resource Record corresponding to a given Internet host name */
PHP_FUNCTION(dns_get_record)346 PHP_FUNCTION(dns_get_record)
347 {
348 char *hostname;
349 size_t hostname_len;
350 zend_long type_param = PHP_DNS_ANY;
351 zval *authns = NULL, *addtl = NULL;
352 int type, type_to_fetch, first_query = 1, store_results = 1;
353 zend_bool raw = 0;
354
355 if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|lz/!z/!b",
356 &hostname, &hostname_len, &type_param, &authns, &addtl, &raw) == FAILURE) {
357 return;
358 }
359
360 if (authns) {
361 zval_dtor(authns);
362 array_init(authns);
363 }
364 if (addtl) {
365 zval_dtor(addtl);
366 array_init(addtl);
367 }
368
369 if (!raw) {
370 if ((type_param & ~PHP_DNS_ALL) && (type_param != PHP_DNS_ANY)) {
371 php_error_docref(NULL, E_WARNING, "Type '%ld' not supported", type_param);
372 RETURN_FALSE;
373 }
374 } else {
375 if ((type_param < 1) || (type_param > 0xFFFF)) {
376 php_error_docref(NULL, E_WARNING,
377 "Numeric DNS record type must be between 1 and 65535, '%ld' given", type_param);
378 RETURN_FALSE;
379 }
380 }
381
382 /* Initialize the return array */
383 array_init(return_value);
384
385 if (raw) {
386 type = -1;
387 } else if (type_param == PHP_DNS_ANY) {
388 type = PHP_DNS_NUM_TYPES + 1;
389 } else {
390 type = 0;
391 }
392
393 for ( ;
394 type < (addtl ? (PHP_DNS_NUM_TYPES + 2) : PHP_DNS_NUM_TYPES) || first_query;
395 type++
396 ) {
397 DNS_STATUS status; /* Return value of DnsQuery_A() function */
398 PDNS_RECORD pResult, pRec; /* Pointer to DNS_RECORD structure */
399
400 first_query = 0;
401 switch (type) {
402 case -1: /* raw */
403 type_to_fetch = type_param;
404 /* skip over the rest and go directly to additional records */
405 type = PHP_DNS_NUM_TYPES - 1;
406 break;
407 case 0:
408 type_to_fetch = type_param&PHP_DNS_A ? DNS_TYPE_A : 0;
409 break;
410 case 1:
411 type_to_fetch = type_param&PHP_DNS_NS ? DNS_TYPE_NS : 0;
412 break;
413 case 2:
414 type_to_fetch = type_param&PHP_DNS_CNAME ? DNS_TYPE_CNAME : 0;
415 break;
416 case 3:
417 type_to_fetch = type_param&PHP_DNS_SOA ? DNS_TYPE_SOA : 0;
418 break;
419 case 4:
420 type_to_fetch = type_param&PHP_DNS_PTR ? DNS_TYPE_PTR : 0;
421 break;
422 case 5:
423 type_to_fetch = type_param&PHP_DNS_HINFO ? DNS_TYPE_HINFO : 0;
424 break;
425 case 6:
426 type_to_fetch = type_param&PHP_DNS_MX ? DNS_TYPE_MX : 0;
427 break;
428 case 7:
429 type_to_fetch = type_param&PHP_DNS_TXT ? DNS_TYPE_TEXT : 0;
430 break;
431 case 8:
432 type_to_fetch = type_param&PHP_DNS_AAAA ? DNS_TYPE_AAAA : 0;
433 break;
434 case 9:
435 type_to_fetch = type_param&PHP_DNS_SRV ? DNS_TYPE_SRV : 0;
436 break;
437 case 10:
438 type_to_fetch = type_param&PHP_DNS_NAPTR ? DNS_TYPE_NAPTR : 0;
439 break;
440 case 11:
441 type_to_fetch = type_param&PHP_DNS_A6 ? DNS_TYPE_A6 : 0;
442 break;
443 case PHP_DNS_NUM_TYPES:
444 store_results = 0;
445 continue;
446 default:
447 case (PHP_DNS_NUM_TYPES + 1):
448 type_to_fetch = DNS_TYPE_ANY;
449 break;
450 }
451
452 if (type_to_fetch) {
453 status = DnsQuery_A(hostname, type_to_fetch, DNS_QUERY_STANDARD, NULL, &pResult, NULL);
454
455 if (status) {
456 if (status == DNS_INFO_NO_RECORDS || status == DNS_ERROR_RCODE_NAME_ERROR) {
457 continue;
458 } else {
459 php_error_docref(NULL, E_WARNING, "DNS Query failed");
460 zval_dtor(return_value);
461 RETURN_FALSE;
462 }
463 }
464
465 for (pRec = pResult; pRec; pRec = pRec->pNext) {
466 zval retval;
467
468 if (pRec->Flags.S.Section == DnsSectionAnswer) {
469 php_parserr(pRec, type_to_fetch, store_results, raw, &retval);
470 if (!Z_ISUNDEF(retval) && store_results) {
471 add_next_index_zval(return_value, &retval);
472 }
473 }
474
475 if (authns && pRec->Flags.S.Section == DnsSectionAuthority) {
476
477 php_parserr(pRec, type_to_fetch, 1, raw, &retval);
478 if (!Z_ISUNDEF(retval)) {
479 add_next_index_zval(authns, &retval);
480 }
481 }
482
483 /* Stupid typo in PSDK 6.1, WinDNS.h(1258)... */
484 #ifndef DnsSectionAdditional
485 # ifdef DnsSectionAddtional
486 # define DnsSectionAdditional DnsSectionAddtional
487 # else
488 # define DnsSectionAdditional 3
489 # endif
490 #endif
491 if (addtl && pRec->Flags.S.Section == DnsSectionAdditional) {
492 php_parserr(pRec, type_to_fetch, 1, raw, &retval);
493 if (!Z_ISUNDEF(retval)) {
494 add_next_index_zval(addtl, &retval);
495 }
496 }
497 }
498 /* Free memory allocated for DNS records. */
499 DnsRecordListFree(pResult, DnsFreeRecordListDeep);
500 }
501 }
502 }
503 /* }}} */
504
