![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to dns.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / php / ext / standard|
Return to dns.c CVS log | Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / php / ext / standard |
1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1997-2012 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: The typical suspects |
16: | Pollita <pollita@php.net> |
17: | Marcus Boerger <helly@php.net> |
18: +----------------------------------------------------------------------+
19: */
20:
21: /* $Id: dns.c 321634 2012-01-01 13:15:04Z felipe $ */
22:
23: /* {{{ includes */
24: #include "php.h"
25: #include "php_network.h"
26:
27: #if HAVE_SYS_SOCKET_H
28: #include <sys/socket.h>
29: #endif
30:
31: #ifdef PHP_WIN32
32: # include "win32/inet.h"
33: # include <winsock2.h>
34: # include <windows.h>
35: # include <Ws2tcpip.h>
36: #else /* This holds good for NetWare too, both for Winsock and Berkeley sockets */
37: #include <netinet/in.h>
38: #if HAVE_ARPA_INET_H
39: #include <arpa/inet.h>
40: #endif
41: #include <netdb.h>
42: #ifdef _OSD_POSIX
43: #undef STATUS
44: #undef T_UNSPEC
45: #endif
46: #if HAVE_ARPA_NAMESER_H
47: #ifdef DARWIN
48: # define BIND_8_COMPAT 1
49: #endif
50: #include <arpa/nameser.h>
51: #endif
52: #if HAVE_RESOLV_H
53: #include <resolv.h>
54: #endif
55: #ifdef HAVE_DNS_H
56: #include <dns.h>
57: #endif
58: #endif
59:
60: /* Borrowed from SYS/SOCKET.H */
61: #if defined(NETWARE) && defined(USE_WINSOCK)
62: #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
63: #endif
64:
65: #ifndef MAXHOSTNAMELEN
66: #define MAXHOSTNAMELEN 255
67: #endif
68:
69: /* For the local hostname obtained via gethostname which is different from the
70: dns-related MAXHOSTNAMELEN constant above */
71: #ifndef HOST_NAME_MAX
72: #define HOST_NAME_MAX 255
73: #endif
74:
75: #include "php_dns.h"
76:
77: /* type compat */
78: #ifndef DNS_T_A
79: #define DNS_T_A 1
80: #endif
81: #ifndef DNS_T_NS
82: #define DNS_T_NS 2
83: #endif
84: #ifndef DNS_T_CNAME
85: #define DNS_T_CNAME 5
86: #endif
87: #ifndef DNS_T_SOA
88: #define DNS_T_SOA 6
89: #endif
90: #ifndef DNS_T_PTR
91: #define DNS_T_PTR 12
92: #endif
93: #ifndef DNS_T_HINFO
94: #define DNS_T_HINFO 13
95: #endif
96: #ifndef DNS_T_MINFO
97: #define DNS_T_MINFO 14
98: #endif
99: #ifndef DNS_T_MX
100: #define DNS_T_MX 15
101: #endif
102: #ifndef DNS_T_TXT
103: #define DNS_T_TXT 16
104: #endif
105: #ifndef DNS_T_AAAA
106: #define DNS_T_AAAA 28
107: #endif
108: #ifndef DNS_T_SRV
109: #define DNS_T_SRV 33
110: #endif
111: #ifndef DNS_T_NAPTR
112: #define DNS_T_NAPTR 35
113: #endif
114: #ifndef DNS_T_A6
115: #define DNS_T_A6 38
116: #endif
117:
118: #ifndef DNS_T_ANY
119: #define DNS_T_ANY 255
120: #endif
121: /* }}} */
122:
123: static char *php_gethostbyaddr(char *ip);
124: static char *php_gethostbyname(char *name);
125:
126: #ifdef HAVE_GETHOSTNAME
127: /* {{{ proto string gethostname()
128: Get the host name of the current machine */
129: PHP_FUNCTION(gethostname)
130: {
131: char buf[HOST_NAME_MAX];
132:
133: if (zend_parse_parameters_none() == FAILURE) {
134: return;
135: }
136:
137: if (gethostname(buf, sizeof(buf) - 1)) {
138: php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to fetch host [%d]: %s", errno, strerror(errno));
139: RETURN_FALSE;
140: }
141:
142: RETURN_STRING(buf, 1);
143: }
144: /* }}} */
145: #endif
146:
147: /* TODO: Reimplement the gethostby* functions using the new winxp+ API, in dns_win32.c, then
148: we can have a dns.c, dns_unix.c and dns_win32.c instead of a messy dns.c full of #ifdef
149: */
150:
151: /* {{{ proto string gethostbyaddr(string ip_address)
152: Get the Internet host name corresponding to a given IP address */
153: PHP_FUNCTION(gethostbyaddr)
154: {
155: char *addr;
156: int addr_len;
157: char *hostname;
158:
159: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &addr, &addr_len) == FAILURE) {
160: return;
161: }
162:
163: hostname = php_gethostbyaddr(addr);
164:
165: if (hostname == NULL) {
166: #if HAVE_IPV6 && HAVE_INET_PTON
167: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Address is not a valid IPv4 or IPv6 address");
168: #else
169: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Address is not in a.b.c.d form");
170: #endif
171: RETVAL_FALSE;
172: } else {
173: RETVAL_STRING(hostname, 0);
174: }
175: }
176: /* }}} */
177:
178: /* {{{ php_gethostbyaddr */
179: static char *php_gethostbyaddr(char *ip)
180: {
181: #if HAVE_IPV6 && HAVE_INET_PTON
182: struct in6_addr addr6;
183: #endif
184: struct in_addr addr;
185: struct hostent *hp;
186:
187: #if HAVE_IPV6 && HAVE_INET_PTON
188: if (inet_pton(AF_INET6, ip, &addr6)) {
189: hp = gethostbyaddr((char *) &addr6, sizeof(addr6), AF_INET6);
190: } else if (inet_pton(AF_INET, ip, &addr)) {
191: hp = gethostbyaddr((char *) &addr, sizeof(addr), AF_INET);
192: } else {
193: return NULL;
194: }
195: #else
196: addr.s_addr = inet_addr(ip);
197:
198: if (addr.s_addr == -1) {
199: return NULL;
200: }
201:
202: hp = gethostbyaddr((char *) &addr, sizeof(addr), AF_INET);
203: #endif
204:
205: if (!hp || hp->h_name == NULL || hp->h_name[0] == '\0') {
206: return estrdup(ip);
207: }
208:
209: return estrdup(hp->h_name);
210: }
211: /* }}} */
212:
213: /* {{{ proto string gethostbyname(string hostname)
214: Get the IP address corresponding to a given Internet host name */
215: PHP_FUNCTION(gethostbyname)
216: {
217: char *hostname;
218: int hostname_len;
219: char *addr;
220:
221: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &hostname, &hostname_len) == FAILURE) {
222: return;
223: }
224:
225: addr = php_gethostbyname(hostname);
226:
227: RETVAL_STRING(addr, 0);
228: }
229: /* }}} */
230:
231: /* {{{ proto array gethostbynamel(string hostname)
232: Return a list of IP addresses that a given hostname resolves to. */
233: PHP_FUNCTION(gethostbynamel)
234: {
235: char *hostname;
236: int hostname_len;
237: struct hostent *hp;
238: struct in_addr in;
239: int i;
240:
241: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &hostname, &hostname_len) == FAILURE) {
242: return;
243: }
244:
245: hp = gethostbyname(hostname);
246: if (hp == NULL || hp->h_addr_list == NULL) {
247: RETURN_FALSE;
248: }
249:
250: array_init(return_value);
251:
252: for (i = 0 ; hp->h_addr_list[i] != 0 ; i++) {
253: in = *(struct in_addr *) hp->h_addr_list[i];
254: add_next_index_string(return_value, inet_ntoa(in), 1);
255: }
256: }
257: /* }}} */
258:
259: /* {{{ php_gethostbyname */
260: static char *php_gethostbyname(char *name)
261: {
262: struct hostent *hp;
263: struct in_addr in;
264:
265: hp = gethostbyname(name);
266:
267: if (!hp || !*(hp->h_addr_list)) {
268: return estrdup(name);
269: }
270:
271: memcpy(&in.s_addr, *(hp->h_addr_list), sizeof(in.s_addr));
272:
273: return estrdup(inet_ntoa(in));
274: }
275: /* }}} */
276:
277: #if HAVE_FULL_DNS_FUNCS || defined(PHP_WIN32)
278: # define PHP_DNS_NUM_TYPES 12 /* Number of DNS Types Supported by PHP currently */
279:
280: # define PHP_DNS_A 0x00000001
281: # define PHP_DNS_NS 0x00000002
282: # define PHP_DNS_CNAME 0x00000010
283: # define PHP_DNS_SOA 0x00000020
284: # define PHP_DNS_PTR 0x00000800
285: # define PHP_DNS_HINFO 0x00001000
286: # define PHP_DNS_MX 0x00004000
287: # define PHP_DNS_TXT 0x00008000
288: # define PHP_DNS_A6 0x01000000
289: # define PHP_DNS_SRV 0x02000000
290: # define PHP_DNS_NAPTR 0x04000000
291: # define PHP_DNS_AAAA 0x08000000
292: # define PHP_DNS_ANY 0x10000000
293: # 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)
294: #endif /* HAVE_FULL_DNS_FUNCS || defined(PHP_WIN32) */
295:
296: /* Note: These functions are defined in ext/standard/dns_win32.c for Windows! */
297: #if !defined(PHP_WIN32) && (HAVE_DNS_SEARCH_FUNC && !(defined(__BEOS__) || defined(NETWARE)))
298:
299: #ifndef HFIXEDSZ
300: #define HFIXEDSZ 12 /* fixed data in header <arpa/nameser.h> */
301: #endif /* HFIXEDSZ */
302:
303: #ifndef QFIXEDSZ
304: #define QFIXEDSZ 4 /* fixed data in query <arpa/nameser.h> */
305: #endif /* QFIXEDSZ */
306:
307: #undef MAXHOSTNAMELEN
308: #define MAXHOSTNAMELEN 1024
309:
310: #ifndef MAXRESOURCERECORDS
311: #define MAXRESOURCERECORDS 64
312: #endif /* MAXRESOURCERECORDS */
313:
314: typedef union {
315: HEADER qb1;
316: u_char qb2[65536];
317: } querybuf;
318:
319: /* just a hack to free resources allocated by glibc in __res_nsend()
320: * See also:
321: * res_thread_freeres() in glibc/resolv/res_init.c
322: * __libc_res_nsend() in resolv/res_send.c
323: * */
324:
325: #if defined(__GLIBC__) && !defined(HAVE_DEPRECATED_DNS_FUNCS)
326: #define php_dns_free_res(__res__) _php_dns_free_res(__res__)
327: static void _php_dns_free_res(struct __res_state res) { /* {{{ */
328: int ns;
329: for (ns = 0; ns < MAXNS; ns++) {
330: if (res._u._ext.nsaddrs[ns] != NULL) {
331: free (res._u._ext.nsaddrs[ns]);
332: res._u._ext.nsaddrs[ns] = NULL;
333: }
334: }
335: } /* }}} */
336: #else
337: #define php_dns_free_res(__res__)
338: #endif
339:
340: /* {{{ proto bool dns_check_record(string host [, string type])
341: Check DNS records corresponding to a given Internet host name or IP address */
342: PHP_FUNCTION(dns_check_record)
343: {
344: #ifndef MAXPACKET
345: #define MAXPACKET 8192 /* max packet size used internally by BIND */
346: #endif
347: u_char ans[MAXPACKET];
348: char *hostname, *rectype = NULL;
349: int hostname_len, rectype_len = 0;
350: int type = T_MX, i;
351: #if defined(HAVE_DNS_SEARCH)
352: struct sockaddr_storage from;
353: uint32_t fromsize = sizeof(from);
354: dns_handle_t handle;
355: #elif defined(HAVE_RES_NSEARCH)
356: struct __res_state state;
357: struct __res_state *handle = &state;
358: #endif
359:
360: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|s", &hostname, &hostname_len, &rectype, &rectype_len) == FAILURE) {
361: return;
362: }
363:
364: if (hostname_len == 0) {
365: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Host cannot be empty");
366: RETURN_FALSE;
367: }
368:
369: if (rectype) {
370: if (!strcasecmp("A", rectype)) type = T_A;
371: else if (!strcasecmp("NS", rectype)) type = DNS_T_NS;
372: else if (!strcasecmp("MX", rectype)) type = DNS_T_MX;
373: else if (!strcasecmp("PTR", rectype)) type = DNS_T_PTR;
374: else if (!strcasecmp("ANY", rectype)) type = DNS_T_ANY;
375: else if (!strcasecmp("SOA", rectype)) type = DNS_T_SOA;
376: else if (!strcasecmp("TXT", rectype)) type = DNS_T_TXT;
377: else if (!strcasecmp("CNAME", rectype)) type = DNS_T_CNAME;
378: else if (!strcasecmp("AAAA", rectype)) type = DNS_T_AAAA;
379: else if (!strcasecmp("SRV", rectype)) type = DNS_T_SRV;
380: else if (!strcasecmp("NAPTR", rectype)) type = DNS_T_NAPTR;
381: else if (!strcasecmp("A6", rectype)) type = DNS_T_A6;
382: else {
383: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Type '%s' not supported", rectype);
384: RETURN_FALSE;
385: }
386: }
387:
388: #if defined(HAVE_DNS_SEARCH)
389: handle = dns_open(NULL);
390: if (handle == NULL) {
391: RETURN_FALSE;
392: }
393: #elif defined(HAVE_RES_NSEARCH)
394: memset(&state, 0, sizeof(state));
395: if (res_ninit(handle)) {
396: RETURN_FALSE;
397: }
398: #else
399: res_init();
400: #endif
401:
402: RETVAL_TRUE;
403: i = php_dns_search(handle, hostname, C_IN, type, ans, sizeof(ans));
404:
405: if (i < 0) {
406: RETVAL_FALSE;
407: }
408:
409: php_dns_free_handle(handle);
410: }
411: /* }}} */
412:
413: #if HAVE_FULL_DNS_FUNCS
414:
415: /* {{{ php_parserr */
416: static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int store, zval **subarray)
417: {
418: u_short type, class, dlen;
419: u_long ttl;
420: long n, i;
421: u_short s;
422: u_char *tp, *p;
423: char name[MAXHOSTNAMELEN];
424: int have_v6_break = 0, in_v6_break = 0;
425:
426: *subarray = NULL;
427:
428: n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, sizeof(name) - 2);
429: if (n < 0) {
430: return NULL;
431: }
432: cp += n;
433:
434: GETSHORT(type, cp);
435: GETSHORT(class, cp);
436: GETLONG(ttl, cp);
437: GETSHORT(dlen, cp);
438: if (type_to_fetch != T_ANY && type != type_to_fetch) {
439: cp += dlen;
440: return cp;
441: }
442:
443: if (!store) {
444: cp += dlen;
445: return cp;
446: }
447:
448: ALLOC_INIT_ZVAL(*subarray);
449: array_init(*subarray);
450:
451: add_assoc_string(*subarray, "host", name, 1);
452: switch (type) {
453: case DNS_T_A:
454: add_assoc_string(*subarray, "type", "A", 1);
455: snprintf(name, sizeof(name), "%d.%d.%d.%d", cp[0], cp[1], cp[2], cp[3]);
456: add_assoc_string(*subarray, "ip", name, 1);
457: cp += dlen;
458: break;
459: case DNS_T_MX:
460: add_assoc_string(*subarray, "type", "MX", 1);
461: GETSHORT(n, cp);
462: add_assoc_long(*subarray, "pri", n);
463: /* no break; */
464: case DNS_T_CNAME:
465: if (type == DNS_T_CNAME) {
466: add_assoc_string(*subarray, "type", "CNAME", 1);
467: }
468: /* no break; */
469: case DNS_T_NS:
470: if (type == DNS_T_NS) {
471: add_assoc_string(*subarray, "type", "NS", 1);
472: }
473: /* no break; */
474: case DNS_T_PTR:
475: if (type == DNS_T_PTR) {
476: add_assoc_string(*subarray, "type", "PTR", 1);
477: }
478: n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2);
479: if (n < 0) {
480: return NULL;
481: }
482: cp += n;
483: add_assoc_string(*subarray, "target", name, 1);
484: break;
485: case DNS_T_HINFO:
486: /* See RFC 1010 for values */
487: add_assoc_string(*subarray, "type", "HINFO", 1);
488: n = *cp & 0xFF;
489: cp++;
490: add_assoc_stringl(*subarray, "cpu", (char*)cp, n, 1);
491: cp += n;
492: n = *cp & 0xFF;
493: cp++;
494: add_assoc_stringl(*subarray, "os", (char*)cp, n, 1);
495: cp += n;
496: break;
497: case DNS_T_TXT:
498: {
499: int ll = 0;
500: zval *entries = NULL;
501:
502: add_assoc_string(*subarray, "type", "TXT", 1);
503: tp = emalloc(dlen + 1);
504:
505: MAKE_STD_ZVAL(entries);
506: array_init(entries);
507:
508: while (ll < dlen) {
509: n = cp[ll];
510: memcpy(tp + ll , cp + ll + 1, n);
511: add_next_index_stringl(entries, cp + ll + 1, n, 1);
512: ll = ll + n + 1;
513: }
514: tp[dlen] = '\0';
515: cp += dlen;
516:
517: add_assoc_stringl(*subarray, "txt", tp, dlen - 1, 0);
518: add_assoc_zval(*subarray, "entries", entries);
519: }
520: break;
521: case DNS_T_SOA:
522: add_assoc_string(*subarray, "type", "SOA", 1);
523: n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) -2);
524: if (n < 0) {
525: return NULL;
526: }
527: cp += n;
528: add_assoc_string(*subarray, "mname", name, 1);
529: n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) -2);
530: if (n < 0) {
531: return NULL;
532: }
533: cp += n;
534: add_assoc_string(*subarray, "rname", name, 1);
535: GETLONG(n, cp);
536: add_assoc_long(*subarray, "serial", n);
537: GETLONG(n, cp);
538: add_assoc_long(*subarray, "refresh", n);
539: GETLONG(n, cp);
540: add_assoc_long(*subarray, "retry", n);
541: GETLONG(n, cp);
542: add_assoc_long(*subarray, "expire", n);
543: GETLONG(n, cp);
544: add_assoc_long(*subarray, "minimum-ttl", n);
545: break;
546: case DNS_T_AAAA:
547: tp = (u_char*)name;
548: for(i=0; i < 8; i++) {
549: GETSHORT(s, cp);
550: if (s != 0) {
551: if (tp > (u_char *)name) {
552: in_v6_break = 0;
553: tp[0] = ':';
554: tp++;
555: }
556: tp += sprintf((char*)tp,"%x",s);
557: } else {
558: if (!have_v6_break) {
559: have_v6_break = 1;
560: in_v6_break = 1;
561: tp[0] = ':';
562: tp++;
563: } else if (!in_v6_break) {
564: tp[0] = ':';
565: tp++;
566: tp[0] = '0';
567: tp++;
568: }
569: }
570: }
571: if (have_v6_break && in_v6_break) {
572: tp[0] = ':';
573: tp++;
574: }
575: tp[0] = '\0';
576: add_assoc_string(*subarray, "type", "AAAA", 1);
577: add_assoc_string(*subarray, "ipv6", name, 1);
578: break;
579: case DNS_T_A6:
580: p = cp;
581: add_assoc_string(*subarray, "type", "A6", 1);
582: n = ((int)cp[0]) & 0xFF;
583: cp++;
584: add_assoc_long(*subarray, "masklen", n);
585: tp = (u_char*)name;
586: if (n > 15) {
587: have_v6_break = 1;
588: in_v6_break = 1;
589: tp[0] = ':';
590: tp++;
591: }
592: if (n % 16 > 8) {
593: /* Partial short */
594: if (cp[0] != 0) {
595: if (tp > (u_char *)name) {
596: in_v6_break = 0;
597: tp[0] = ':';
598: tp++;
599: }
600: sprintf((char*)tp, "%x", cp[0] & 0xFF);
601: } else {
602: if (!have_v6_break) {
603: have_v6_break = 1;
604: in_v6_break = 1;
605: tp[0] = ':';
606: tp++;
607: } else if (!in_v6_break) {
608: tp[0] = ':';
609: tp++;
610: tp[0] = '0';
611: tp++;
612: }
613: }
614: cp++;
615: }
616: for (i = (n + 8) / 16; i < 8; i++) {
617: GETSHORT(s, cp);
618: if (s != 0) {
619: if (tp > (u_char *)name) {
620: in_v6_break = 0;
621: tp[0] = ':';
622: tp++;
623: }
624: tp += sprintf((char*)tp,"%x",s);
625: } else {
626: if (!have_v6_break) {
627: have_v6_break = 1;
628: in_v6_break = 1;
629: tp[0] = ':';
630: tp++;
631: } else if (!in_v6_break) {
632: tp[0] = ':';
633: tp++;
634: tp[0] = '0';
635: tp++;
636: }
637: }
638: }
639: if (have_v6_break && in_v6_break) {
640: tp[0] = ':';
641: tp++;
642: }
643: tp[0] = '\0';
644: add_assoc_string(*subarray, "ipv6", name, 1);
645: if (cp < p + dlen) {
646: n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2);
647: if (n < 0) {
648: return NULL;
649: }
650: cp += n;
651: add_assoc_string(*subarray, "chain", name, 1);
652: }
653: break;
654: case DNS_T_SRV:
655: add_assoc_string(*subarray, "type", "SRV", 1);
656: GETSHORT(n, cp);
657: add_assoc_long(*subarray, "pri", n);
658: GETSHORT(n, cp);
659: add_assoc_long(*subarray, "weight", n);
660: GETSHORT(n, cp);
661: add_assoc_long(*subarray, "port", n);
662: n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2);
663: if (n < 0) {
664: return NULL;
665: }
666: cp += n;
667: add_assoc_string(*subarray, "target", name, 1);
668: break;
669: case DNS_T_NAPTR:
670: add_assoc_string(*subarray, "type", "NAPTR", 1);
671: GETSHORT(n, cp);
672: add_assoc_long(*subarray, "order", n);
673: GETSHORT(n, cp);
674: add_assoc_long(*subarray, "pref", n);
675: n = (cp[0] & 0xFF);
676: add_assoc_stringl(*subarray, "flags", (char*)++cp, n, 1);
677: cp += n;
678: n = (cp[0] & 0xFF);
679: add_assoc_stringl(*subarray, "services", (char*)++cp, n, 1);
680: cp += n;
681: n = (cp[0] & 0xFF);
682: add_assoc_stringl(*subarray, "regex", (char*)++cp, n, 1);
683: cp += n;
684: n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2);
685: if (n < 0) {
686: return NULL;
687: }
688: cp += n;
689: add_assoc_string(*subarray, "replacement", name, 1);
690: break;
691: default:
692: cp += dlen;
693: }
694:
695: add_assoc_string(*subarray, "class", "IN", 1);
696: add_assoc_long(*subarray, "ttl", ttl);
697:
698: return cp;
699: }
700: /* }}} */
701:
702: /* {{{ proto array|false dns_get_record(string hostname [, int type[, array authns, array addtl]])
703: Get any Resource Record corresponding to a given Internet host name */
704: PHP_FUNCTION(dns_get_record)
705: {
706: char *hostname;
707: int hostname_len;
708: long type_param = PHP_DNS_ANY;
709: zval *authns = NULL, *addtl = NULL;
710: int type_to_fetch;
711: #if defined(HAVE_DNS_SEARCH)
712: struct sockaddr_storage from;
713: uint32_t fromsize = sizeof(from);
714: dns_handle_t handle;
715: #elif defined(HAVE_RES_NSEARCH)
716: struct __res_state state;
717: struct __res_state *handle = &state;
718: #endif
719: HEADER *hp;
720: querybuf answer;
721: u_char *cp = NULL, *end = NULL;
722: int n, qd, an, ns = 0, ar = 0;
723: int type, first_query = 1, store_results = 1;
724:
725: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|lzz", &hostname, &hostname_len, &type_param, &authns, &addtl) == FAILURE) {
726: return;
727: }
728:
729: if (authns) {
730: zval_dtor(authns);
731: array_init(authns);
732: }
733: if (addtl) {
734: zval_dtor(addtl);
735: array_init(addtl);
736: }
737:
738: if (type_param & ~PHP_DNS_ALL && type_param != PHP_DNS_ANY) {
739: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Type '%ld' not supported", type_param);
740: RETURN_FALSE;
741: }
742:
743: /* Initialize the return array */
744: array_init(return_value);
745:
746: /* - We emulate an or'ed type mask by querying type by type. (Steps 0 - NUMTYPES-1 )
747: * If additional info is wanted we check again with DNS_T_ANY (step NUMTYPES / NUMTYPES+1 )
748: * store_results is used to skip storing the results retrieved in step
749: * NUMTYPES+1 when results were already fetched.
750: * - In case of PHP_DNS_ANY we use the directly fetch DNS_T_ANY. (step NUMTYPES+1 )
751: */
752: for (type = (type_param == PHP_DNS_ANY ? (PHP_DNS_NUM_TYPES + 1) : 0);
753: type < (addtl ? (PHP_DNS_NUM_TYPES + 2) : PHP_DNS_NUM_TYPES) || first_query;
754: type++
755: ) {
756: first_query = 0;
757: switch (type) {
758: case 0:
759: type_to_fetch = type_param&PHP_DNS_A ? DNS_T_A : 0;
760: break;
761: case 1:
762: type_to_fetch = type_param&PHP_DNS_NS ? DNS_T_NS : 0;
763: break;
764: case 2:
765: type_to_fetch = type_param&PHP_DNS_CNAME ? DNS_T_CNAME : 0;
766: break;
767: case 3:
768: type_to_fetch = type_param&PHP_DNS_SOA ? DNS_T_SOA : 0;
769: break;
770: case 4:
771: type_to_fetch = type_param&PHP_DNS_PTR ? DNS_T_PTR : 0;
772: break;
773: case 5:
774: type_to_fetch = type_param&PHP_DNS_HINFO ? DNS_T_HINFO : 0;
775: break;
776: case 6:
777: type_to_fetch = type_param&PHP_DNS_MX ? DNS_T_MX : 0;
778: break;
779: case 7:
780: type_to_fetch = type_param&PHP_DNS_TXT ? DNS_T_TXT : 0;
781: break;
782: case 8:
783: type_to_fetch = type_param&PHP_DNS_AAAA ? DNS_T_AAAA : 0;
784: break;
785: case 9:
786: type_to_fetch = type_param&PHP_DNS_SRV ? DNS_T_SRV : 0;
787: break;
788: case 10:
789: type_to_fetch = type_param&PHP_DNS_NAPTR ? DNS_T_NAPTR : 0;
790: break;
791: case 11:
792: type_to_fetch = type_param&PHP_DNS_A6 ? DNS_T_A6 : 0;
793: break;
794: case PHP_DNS_NUM_TYPES:
795: store_results = 0;
796: continue;
797: default:
798: case (PHP_DNS_NUM_TYPES + 1):
799: type_to_fetch = DNS_T_ANY;
800: break;
801: }
802:
803: if (type_to_fetch) {
804: #if defined(HAVE_DNS_SEARCH)
805: handle = dns_open(NULL);
806: if (handle == NULL) {
807: zval_dtor(return_value);
808: RETURN_FALSE;
809: }
810: #elif defined(HAVE_RES_NSEARCH)
811: memset(&state, 0, sizeof(state));
812: if (res_ninit(handle)) {
813: zval_dtor(return_value);
814: RETURN_FALSE;
815: }
816: #else
817: res_init();
818: #endif
819:
820: n = php_dns_search(handle, hostname, C_IN, type_to_fetch, answer.qb2, sizeof answer);
821:
822: if (n < 0) {
823: php_dns_free_handle(handle);
824: continue;
825: }
826:
827: cp = answer.qb2 + HFIXEDSZ;
828: end = answer.qb2 + n;
829: hp = (HEADER *)&answer;
830: qd = ntohs(hp->qdcount);
831: an = ntohs(hp->ancount);
832: ns = ntohs(hp->nscount);
833: ar = ntohs(hp->arcount);
834:
835: /* Skip QD entries, they're only used by dn_expand later on */
836: while (qd-- > 0) {
837: n = dn_skipname(cp, end);
838: if (n < 0) {
839: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to parse DNS data received");
840: zval_dtor(return_value);
841: php_dns_free_handle(handle);
842: RETURN_FALSE;
843: }
844: cp += n + QFIXEDSZ;
845: }
846:
847: /* YAY! Our real answers! */
848: while (an-- && cp && cp < end) {
849: zval *retval;
850:
851: cp = php_parserr(cp, &answer, type_to_fetch, store_results, &retval);
852: if (retval != NULL && store_results) {
853: add_next_index_zval(return_value, retval);
854: }
855: }
856:
857: if (authns || addtl) {
858: /* List of Authoritative Name Servers
859: * Process when only requesting addtl so that we can skip through the section
860: */
861: while (ns-- > 0 && cp && cp < end) {
862: zval *retval = NULL;
863:
864: cp = php_parserr(cp, &answer, DNS_T_ANY, authns != NULL, &retval);
865: if (retval != NULL) {
866: add_next_index_zval(authns, retval);
867: }
868: }
869: }
870:
871: if (addtl) {
872: /* Additional records associated with authoritative name servers */
873: while (ar-- > 0 && cp && cp < end) {
874: zval *retval = NULL;
875:
876: cp = php_parserr(cp, &answer, DNS_T_ANY, 1, &retval);
877: if (retval != NULL) {
878: add_next_index_zval(addtl, retval);
879: }
880: }
881: }
882: php_dns_free_handle(handle);
883: }
884: }
885: }
886: /* }}} */
887:
888: /* {{{ proto bool dns_get_mx(string hostname, array mxhosts [, array weight])
889: Get MX records corresponding to a given Internet host name */
890: PHP_FUNCTION(dns_get_mx)
891: {
892: char *hostname;
893: int hostname_len;
894: zval *mx_list, *weight_list = NULL;
895: int count, qdc;
896: u_short type, weight;
897: u_char ans[MAXPACKET];
898: char buf[MAXHOSTNAMELEN];
899: HEADER *hp;
900: u_char *cp, *end;
901: int i;
902: #if defined(HAVE_DNS_SEARCH)
903: struct sockaddr_storage from;
904: uint32_t fromsize = sizeof(from);
905: dns_handle_t handle;
906: #elif defined(HAVE_RES_NSEARCH)
907: struct __res_state state;
908: struct __res_state *handle = &state;
909: #endif
910:
911: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sz|z", &hostname, &hostname_len, &mx_list, &weight_list) == FAILURE) {
912: return;
913: }
914:
915: zval_dtor(mx_list);
916: array_init(mx_list);
917:
918: if (weight_list) {
919: zval_dtor(weight_list);
920: array_init(weight_list);
921: }
922:
923: #if defined(HAVE_DNS_SEARCH)
924: handle = dns_open(NULL);
925: if (handle == NULL) {
926: RETURN_FALSE;
927: }
928: #elif defined(HAVE_RES_NSEARCH)
929: memset(&state, 0, sizeof(state));
930: if (res_ninit(handle)) {
931: RETURN_FALSE;
932: }
933: #else
934: res_init();
935: #endif
936:
937: i = php_dns_search(handle, hostname, C_IN, DNS_T_MX, (u_char *)&ans, sizeof(ans));
938: if (i < 0) {
939: RETURN_FALSE;
940: }
941: if (i > (int)sizeof(ans)) {
942: i = sizeof(ans);
943: }
944: hp = (HEADER *)&ans;
945: cp = (u_char *)&ans + HFIXEDSZ;
946: end = (u_char *)&ans +i;
947: for (qdc = ntohs((unsigned short)hp->qdcount); qdc--; cp += i + QFIXEDSZ) {
948: if ((i = dn_skipname(cp, end)) < 0 ) {
949: php_dns_free_handle(handle);
950: RETURN_FALSE;
951: }
952: }
953: count = ntohs((unsigned short)hp->ancount);
954: while (--count >= 0 && cp < end) {
955: if ((i = dn_skipname(cp, end)) < 0 ) {
956: php_dns_free_handle(handle);
957: RETURN_FALSE;
958: }
959: cp += i;
960: GETSHORT(type, cp);
961: cp += INT16SZ + INT32SZ;
962: GETSHORT(i, cp);
963: if (type != DNS_T_MX) {
964: cp += i;
965: continue;
966: }
967: GETSHORT(weight, cp);
968: if ((i = dn_expand(ans, end, cp, buf, sizeof(buf)-1)) < 0) {
969: php_dns_free_handle(handle);
970: RETURN_FALSE;
971: }
972: cp += i;
973: add_next_index_string(mx_list, buf, 1);
974: if (weight_list) {
975: add_next_index_long(weight_list, weight);
976: }
977: }
978: php_dns_free_handle(handle);
979: RETURN_TRUE;
980: }
981: /* }}} */
982: #endif /* HAVE_FULL_DNS_FUNCS */
983: #endif /* !defined(PHP_WIN32) && (HAVE_DNS_SEARCH_FUNC && !(defined(__BEOS__) || defined(NETWARE))) */
984:
985: #if HAVE_FULL_DNS_FUNCS || defined(PHP_WIN32)
986: PHP_MINIT_FUNCTION(dns) {
987: REGISTER_LONG_CONSTANT("DNS_A", PHP_DNS_A, CONST_CS | CONST_PERSISTENT);
988: REGISTER_LONG_CONSTANT("DNS_NS", PHP_DNS_NS, CONST_CS | CONST_PERSISTENT);
989: REGISTER_LONG_CONSTANT("DNS_CNAME", PHP_DNS_CNAME, CONST_CS | CONST_PERSISTENT);
990: REGISTER_LONG_CONSTANT("DNS_SOA", PHP_DNS_SOA, CONST_CS | CONST_PERSISTENT);
991: REGISTER_LONG_CONSTANT("DNS_PTR", PHP_DNS_PTR, CONST_CS | CONST_PERSISTENT);
992: REGISTER_LONG_CONSTANT("DNS_HINFO", PHP_DNS_HINFO, CONST_CS | CONST_PERSISTENT);
993: REGISTER_LONG_CONSTANT("DNS_MX", PHP_DNS_MX, CONST_CS | CONST_PERSISTENT);
994: REGISTER_LONG_CONSTANT("DNS_TXT", PHP_DNS_TXT, CONST_CS | CONST_PERSISTENT);
995: REGISTER_LONG_CONSTANT("DNS_SRV", PHP_DNS_SRV, CONST_CS | CONST_PERSISTENT);
996: REGISTER_LONG_CONSTANT("DNS_NAPTR", PHP_DNS_NAPTR, CONST_CS | CONST_PERSISTENT);
997: REGISTER_LONG_CONSTANT("DNS_AAAA", PHP_DNS_AAAA, CONST_CS | CONST_PERSISTENT);
998: REGISTER_LONG_CONSTANT("DNS_A6", PHP_DNS_A6, CONST_CS | CONST_PERSISTENT);
999: REGISTER_LONG_CONSTANT("DNS_ANY", PHP_DNS_ANY, CONST_CS | CONST_PERSISTENT);
1000: REGISTER_LONG_CONSTANT("DNS_ALL", PHP_DNS_ALL, CONST_CS | CONST_PERSISTENT);
1001: return SUCCESS;
1002: }
1003: #endif /* HAVE_FULL_DNS_FUNCS */
1004:
1005: /*
1006: * Local variables:
1007: * tab-width: 4
1008: * c-basic-offset: 4
1009: * End:
1010: * vim600: sw=4 ts=4 fdm=marker
1011: * vim<600: sw=4 ts=4
1012: */