/* +----------------------------------------------------------------------+ | PHP Version 5 | +----------------------------------------------------------------------+ | Copyright (c) 1997-2005 The PHP Group | +----------------------------------------------------------------------+ | This source file is subject to version 3.0 of the PHP license, | | that is bundled with this package in the file LICENSE, and is | | available through the world-wide-web at the following url: | | http://www.php.net/license/3_0.txt. | | If you did not receive a copy of the PHP license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@php.net so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Authors: The typical suspects | | Pollita | | Marcus Boerger | +----------------------------------------------------------------------+ */ /* $Id$ */ /* {{{ includes */ #include "php.h" #if HAVE_SYS_SOCKET_H #include #endif #ifdef PHP_WIN32 #if HAVE_LIBBIND #ifndef WINNT #define WINNT 1 #endif /* located in www.php.net/extra/bindlib.zip */ #if HAVE_ARPA_INET_H #include "arpa/inet.h" #endif #include "netdb.h" #if HAVE_ARPA_NAMESERV_H #include "arpa/nameser.h" #endif #if HAVE_RESOLV_H #include "resolv.h" #endif #endif /* HAVE_LIBBIND */ #include #else /* This holds good for NetWare too, both for Winsock and Berkeley sockets */ #include #if HAVE_ARPA_INET_H #include #endif #include #ifdef _OSD_POSIX #undef STATUS #undef T_UNSPEC #endif #if HAVE_ARPA_NAMESER_H #include #endif #if HAVE_RESOLV_H #include #endif #endif /* Borrowed from SYS/SOCKET.H */ #if defined(NETWARE) && defined(USE_WINSOCK) #define AF_INET 2 /* internetwork: UDP, TCP, etc. */ #endif #include "dns.h" /* type compat */ #ifndef DNS_T_A #define DNS_T_A 1 #endif #ifndef DNS_T_NS #define DNS_T_NS 2 #endif #ifndef DNS_T_CNAME #define DNS_T_CNAME 5 #endif #ifndef DNS_T_SOA #define DNS_T_SOA 6 #endif #ifndef DNS_T_PTR #define DNS_T_PTR 12 #endif #ifndef DNS_T_HINFO #define DNS_T_HINFO 13 #endif #ifndef DNS_T_MINFO #define DNS_T_MINFO 14 #endif #ifndef DNS_T_MX #define DNS_T_MX 15 #endif #ifndef DNS_T_TXT #define DNS_T_TXT 16 #endif #ifndef DNS_T_AAAA #define DNS_T_AAAA 28 #endif #ifndef DNS_T_SRV #define DNS_T_SRV 33 #endif #ifndef DNS_T_NAPTR #define DNS_T_NAPTR 35 #endif #ifndef DNS_T_A6 #define DNS_T_A6 38 #endif #ifndef DNS_T_ANY #define DNS_T_ANY 255 #endif /* }}} */ static char *php_gethostbyaddr(char *ip); static char *php_gethostbyname(char *name); /* {{{ proto string gethostbyaddr(string ip_address) Get the Internet host name corresponding to a given IP address */ PHP_FUNCTION(gethostbyaddr) { zval **arg; char *addr; if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &arg) == FAILURE) { ZEND_WRONG_PARAM_COUNT(); } convert_to_string_ex(arg); addr = php_gethostbyaddr(Z_STRVAL_PP(arg)); if (addr == NULL) { #if HAVE_IPV6 && HAVE_INET_PTON php_error_docref(NULL TSRMLS_CC, E_WARNING, "Address is not a valid IPv4 or IPv6 address"); #else php_error_docref(NULL TSRMLS_CC, E_WARNING, "Address is not in a.b.c.d form"); #endif RETVAL_FALSE; } else { RETVAL_STRING(addr, 0); } } /* }}} */ /* {{{ php_gethostbyaddr */ static char *php_gethostbyaddr(char *ip) { #if HAVE_IPV6 && HAVE_INET_PTON struct in6_addr addr6; #endif struct in_addr addr; struct hostent *hp; #if HAVE_IPV6 && HAVE_INET_PTON if (inet_pton(AF_INET6, ip, &addr6)) { hp = gethostbyaddr((char *) &addr6, sizeof(addr6), AF_INET6); } else if (inet_pton(AF_INET, ip, &addr)) { hp = gethostbyaddr((char *) &addr, sizeof(addr), AF_INET); } else { return NULL; } #else addr.s_addr = inet_addr(ip); if (addr.s_addr == -1) { return NULL; } hp = gethostbyaddr((char *) &addr, sizeof(addr), AF_INET); #endif if (!hp || hp->h_name == NULL || hp->h_name[0] == '\0') { return estrdup(ip); } return estrdup(hp->h_name); } /* }}} */ /* {{{ proto string gethostbyname(string hostname) Get the IP address corresponding to a given Internet host name */ PHP_FUNCTION(gethostbyname) { zval **arg; if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &arg) == FAILURE) { ZEND_WRONG_PARAM_COUNT(); } convert_to_string_ex(arg); RETVAL_STRING(php_gethostbyname(Z_STRVAL_PP(arg)), 0); } /* }}} */ /* {{{ proto array gethostbynamel(string hostname) Return a list of IP addresses that a given hostname resolves to. */ PHP_FUNCTION(gethostbynamel) { zval **arg; struct hostent *hp; struct in_addr in; int i; if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &arg) == FAILURE) { ZEND_WRONG_PARAM_COUNT(); } convert_to_string_ex(arg); hp = gethostbyname(Z_STRVAL_PP(arg)); if (hp == NULL || hp->h_addr_list == NULL) { RETURN_FALSE; } array_init(return_value); for (i = 0 ; hp->h_addr_list[i] != 0 ; i++) { in = *(struct in_addr *) hp->h_addr_list[i]; add_next_index_string(return_value, inet_ntoa(in), 1); } } /* }}} */ /* {{{ php_gethostbyname */ static char *php_gethostbyname(char *name) { struct hostent *hp; struct in_addr in; hp = gethostbyname(name); if (!hp || !*(hp->h_addr_list)) { return estrdup(name); } memcpy(&in.s_addr, *(hp->h_addr_list), sizeof(in.s_addr)); return estrdup(inet_ntoa(in)); } /* }}} */ #if HAVE_RES_SEARCH && !(defined(__BEOS__)||defined(PHP_WIN32) || defined(NETWARE)) /* {{{ proto int dns_check_record(string host [, string type]) Check DNS records corresponding to a given Internet host name or IP address */ PHP_FUNCTION(dns_check_record) { zval **arg1, **arg2; int type, i; #ifndef MAXPACKET #define MAXPACKET 8192 /* max packet size used internally by BIND */ #endif u_char ans[MAXPACKET]; switch (ZEND_NUM_ARGS()) { case 1: if (zend_get_parameters_ex(1, &arg1) == FAILURE) { WRONG_PARAM_COUNT; } type = T_MX; convert_to_string_ex(arg1); break; case 2: if (zend_get_parameters_ex(2, &arg1, &arg2) == FAILURE) { WRONG_PARAM_COUNT; } convert_to_string_ex(arg1); convert_to_string_ex(arg2); if (!strcasecmp("A", Z_STRVAL_PP(arg2))) type = T_A; else if (!strcasecmp("NS", Z_STRVAL_PP(arg2))) type = DNS_T_NS; else if (!strcasecmp("MX", Z_STRVAL_PP(arg2))) type = DNS_T_MX; else if (!strcasecmp("PTR", Z_STRVAL_PP(arg2))) type = DNS_T_PTR; else if (!strcasecmp("ANY", Z_STRVAL_PP(arg2))) type = DNS_T_ANY; else if (!strcasecmp("SOA", Z_STRVAL_PP(arg2))) type = DNS_T_SOA; else if (!strcasecmp("CNAME", Z_STRVAL_PP(arg2))) type = DNS_T_CNAME; else if (!strcasecmp("AAAA", Z_STRVAL_PP(arg2))) type = DNS_T_AAAA; else if (!strcasecmp("SRV", Z_STRVAL_PP(arg2))) type = DNS_T_SRV; else if (!strcasecmp("NAPTR", Z_STRVAL_PP(arg2))) type = DNS_T_NAPTR; else if (!strcasecmp("A6", Z_STRVAL_PP(arg2))) type = DNS_T_A6; else { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Type '%s' not supported", Z_STRVAL_PP(arg2)); RETURN_FALSE; } break; default: WRONG_PARAM_COUNT; } i = res_search(Z_STRVAL_PP(arg1), C_IN, type, ans, sizeof(ans)); if (i < 0) { RETURN_FALSE; } RETURN_TRUE; } /* }}} */ #if HAVE_DNS_FUNCS #define PHP_DNS_NUM_TYPES 12 /* Number of DNS Types Supported by PHP currently */ #define PHP_DNS_A 0x00000001 #define PHP_DNS_NS 0x00000002 #define PHP_DNS_CNAME 0x00000010 #define PHP_DNS_SOA 0x00000020 #define PHP_DNS_PTR 0x00000800 #define PHP_DNS_HINFO 0x00001000 #define PHP_DNS_MX 0x00004000 #define PHP_DNS_TXT 0x00008000 #define PHP_DNS_A6 0x01000000 #define PHP_DNS_SRV 0x02000000 #define PHP_DNS_NAPTR 0x04000000 #define PHP_DNS_AAAA 0x08000000 #define PHP_DNS_ANY 0x10000000 #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) PHP_MINIT_FUNCTION(dns) { REGISTER_LONG_CONSTANT("DNS_A", PHP_DNS_A, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_NS", PHP_DNS_NS, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_CNAME", PHP_DNS_CNAME, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_SOA", PHP_DNS_SOA, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_PTR", PHP_DNS_PTR, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_HINFO", PHP_DNS_HINFO, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_MX", PHP_DNS_MX, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_TXT", PHP_DNS_TXT, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_SRV", PHP_DNS_SRV, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_NAPTR", PHP_DNS_NAPTR, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_AAAA", PHP_DNS_AAAA, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_A6", PHP_DNS_A6, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_ANY", PHP_DNS_ANY, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_ALL", PHP_DNS_ALL, CONST_CS | CONST_PERSISTENT); return SUCCESS; } #ifndef HFIXEDSZ #define HFIXEDSZ 12 /* fixed data in header */ #endif /* HFIXEDSZ */ #ifndef QFIXEDSZ #define QFIXEDSZ 4 /* fixed data in query */ #endif /* QFIXEDSZ */ #undef MAXHOSTNAMELEN #define MAXHOSTNAMELEN 1024 #ifndef MAXRESOURCERECORDS #define MAXRESOURCERECORDS 64 #endif /* MAXRESOURCERECORDS */ typedef union { HEADER qb1; u_char qb2[65536]; } querybuf; /* just a hack to free resources allocated by glibc in __res_nsend() * See also: * res_thread_freeres() in glibc/resolv/res_init.c * __libc_res_nsend() in resolv/res_send.c * */ #ifdef __GLIBC__ #define php_dns_free_res(__res__) _php_dns_free_res(__res__) static void _php_dns_free_res(struct __res_state res) { /* {{{ */ int ns; for (ns = 0; ns < MAXNS; ns++) { if (res._u._ext.nsaddrs[ns] != NULL) { free (res._u._ext.nsaddrs[ns]); res._u._ext.nsaddrs[ns] = NULL; } } } /* }}} */ #else #define php_dns_free_res(__res__) #endif /* {{{ php_parserr */ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int store, zval **subarray) { u_short type, class, dlen; u_long ttl; long n, i; u_short s; u_char *tp, *p; char name[MAXHOSTNAMELEN]; int have_v6_break = 0, in_v6_break = 0; *subarray = NULL; n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, sizeof(name) - 2); if (n < 0) { return NULL; } cp += n; GETSHORT(type, cp); GETSHORT(class, cp); GETLONG(ttl, cp); GETSHORT(dlen, cp); if (type_to_fetch != T_ANY && type != type_to_fetch) { cp += dlen; return cp; } if (!store) { cp += dlen; return cp; } ALLOC_INIT_ZVAL(*subarray); array_init(*subarray); add_assoc_string(*subarray, "host", name, 1); switch (type) { case DNS_T_A: add_assoc_string(*subarray, "type", "A", 1); sprintf(name, "%d.%d.%d.%d", cp[0], cp[1], cp[2], cp[3]); add_assoc_string(*subarray, "ip", name, 1); cp += dlen; break; case DNS_T_MX: add_assoc_string(*subarray, "type", "MX", 1); GETSHORT(n, cp); add_assoc_long(*subarray, "pri", n); /* no break; */ case DNS_T_CNAME: if (type == DNS_T_CNAME) add_assoc_string(*subarray, "type", "CNAME", 1); /* no break; */ case DNS_T_NS: if (type == DNS_T_NS) add_assoc_string(*subarray, "type", "NS", 1); /* no break; */ case DNS_T_PTR: if (type == DNS_T_PTR) add_assoc_string(*subarray, "type", "PTR", 1); n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2); if (n < 0) { return NULL; } cp += n; add_assoc_string(*subarray, "target", name, 1); break; case DNS_T_HINFO: /* See RFC 1010 for values */ add_assoc_string(*subarray, "type", "HINFO", 1); n = *cp & 0xFF; cp++; add_assoc_stringl(*subarray, "cpu", cp, n, 1); cp += n; n = *cp & 0xFF; cp++; add_assoc_stringl(*subarray, "os", cp, n, 1); cp += n; break; case DNS_T_TXT: add_assoc_string(*subarray, "type", "TXT", 1); n = cp[0]; tp = emalloc(n + 1); memcpy(tp, cp + 1, n); tp[n] = '\0'; cp += dlen; add_assoc_stringl(*subarray, "txt", tp, n, 0); break; case DNS_T_SOA: add_assoc_string(*subarray, "type", "SOA", 1); n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) -2); if (n < 0) { return NULL; } cp += n; add_assoc_string(*subarray, "mname", name, 1); n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) -2); if (n < 0) { return NULL; } cp += n; add_assoc_string(*subarray, "rname", name, 1); GETLONG(n, cp); add_assoc_long(*subarray, "serial", n); GETLONG(n, cp); add_assoc_long(*subarray, "refresh", n); GETLONG(n, cp); add_assoc_long(*subarray, "retry", n); GETLONG(n, cp); add_assoc_long(*subarray, "expire", n); GETLONG(n, cp); add_assoc_long(*subarray, "minimum-ttl", n); break; case DNS_T_AAAA: tp = name; for(i=0; i < 8; i++) { GETSHORT(s, cp); if (s != 0) { if (tp > (u_char *)name) { in_v6_break = 0; tp[0] = ':'; tp++; } tp += sprintf(tp,"%x",s); } else { if (!have_v6_break) { have_v6_break = 1; in_v6_break = 1; tp[0] = ':'; tp++; } else if (!in_v6_break) { tp[0] = ':'; tp++; tp[0] = '0'; tp++; } } } if (have_v6_break && in_v6_break) { tp[0] = ':'; tp++; } tp[0] = '\0'; add_assoc_string(*subarray, "type", "AAAA", 1); add_assoc_string(*subarray, "ipv6", name, 1); break; case DNS_T_A6: p = cp; add_assoc_string(*subarray, "type", "A6", 1); n = ((int)cp[0]) & 0xFF; cp++; add_assoc_long(*subarray, "masklen", n); tp = name; if (n > 15) { have_v6_break = 1; in_v6_break = 1; tp[0] = ':'; tp++; } if (n % 16 > 8) { /* Partial short */ if (cp[0] != 0) { if (tp > (u_char *)name) { in_v6_break = 0; tp[0] = ':'; tp++; } sprintf(tp, "%x", cp[0] & 0xFF); } else { if (!have_v6_break) { have_v6_break = 1; in_v6_break = 1; tp[0] = ':'; tp++; } else if (!in_v6_break) { tp[0] = ':'; tp++; tp[0] = '0'; tp++; } } cp++; } for(i = (n+8)/16; i < 8; i++) { GETSHORT(s, cp); if (s != 0) { if (tp > (u_char *)name) { in_v6_break = 0; tp[0] = ':'; tp++; } tp += sprintf(tp,"%x",s); } else { if (!have_v6_break) { have_v6_break = 1; in_v6_break = 1; tp[0] = ':'; tp++; } else if (!in_v6_break) { tp[0] = ':'; tp++; tp[0] = '0'; tp++; } } } if (have_v6_break && in_v6_break) { tp[0] = ':'; tp++; } tp[0] = '\0'; add_assoc_string(*subarray, "ipv6", name, 1); if (cp < p + dlen) { n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2); if (n < 0) { return NULL; } cp += n; add_assoc_string(*subarray, "chain", name, 1); } break; case DNS_T_SRV: add_assoc_string(*subarray, "type", "SRV", 1); GETSHORT(n, cp); add_assoc_long(*subarray, "pri", n); GETSHORT(n, cp); add_assoc_long(*subarray, "weight", n); GETSHORT(n, cp); add_assoc_long(*subarray, "port", n); n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2); if (n < 0) { return NULL; } cp += n; add_assoc_string(*subarray, "target", name, 1); break; case DNS_T_NAPTR: add_assoc_string(*subarray, "type", "NAPTR", 1); GETSHORT(n, cp); add_assoc_long(*subarray, "order", n); GETSHORT(n, cp); add_assoc_long(*subarray, "pref", n); n = (cp[0] & 0xFF); add_assoc_stringl(*subarray, "flags", ++cp, n, 1); cp += n; n = (cp[0] & 0xFF); add_assoc_stringl(*subarray, "services", ++cp, n, 1); cp += n; n = (cp[0] & 0xFF); add_assoc_stringl(*subarray, "regex", ++cp, n, 1); cp += n; n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2); if (n < 0) { return NULL; } cp += n; add_assoc_string(*subarray, "replacement", name, 1); break; default: cp += dlen; } add_assoc_string(*subarray, "class", "IN", 1); add_assoc_long(*subarray, "ttl", ttl); return cp; } /* }}} */ /* {{{ proto array|false dns_get_record(string hostname [, int type[, array authns, array addtl]]) Get any Resource Record corresponding to a given Internet host name */ PHP_FUNCTION(dns_get_record) { zval *addtl, *host, *authns, *fetch_type; int addtl_recs = 0; int type_to_fetch, type_param = PHP_DNS_ANY; struct __res_state res; HEADER *hp; querybuf buf, answer; u_char *cp = NULL, *end = NULL; int n, qd, an, ns = 0, ar = 0; int type, first_query = 1, store_results = 1; switch (ZEND_NUM_ARGS()) { case 1: if (zend_get_parameters(ht, 1, &host) == FAILURE) { WRONG_PARAM_COUNT; } break; case 2: if (zend_get_parameters(ht, 2, &host, &fetch_type) == FAILURE) { WRONG_PARAM_COUNT; } convert_to_long(fetch_type); type_param = Z_LVAL_P(fetch_type); break; case 4: if (zend_get_parameters(ht, 4, &host, &fetch_type, &authns, &addtl) == FAILURE) { WRONG_PARAM_COUNT; } convert_to_long(fetch_type); type_param = Z_LVAL_P(fetch_type); zval_dtor(authns); addtl_recs = 1; /* We want the additional Records */ array_init(authns); zval_dtor(addtl); array_init(addtl); break; default: WRONG_PARAM_COUNT; } convert_to_string(host); if (type_param&~PHP_DNS_ALL && type_param!=PHP_DNS_ANY) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Type '%d' not supported", type_param); RETURN_FALSE; } /* Initialize the return array */ array_init(return_value); /* - We emulate an or'ed type mask by querying type by type. (Steps 0 - NUMTYPES-1 ) * If additional info is wanted we check again with DNS_T_ANY (step NUMTYPES / NUMTYPES+1 ) * store_results is used to skip storing the results retrieved in step * NUMTYPES+1 when results were already fetched. * - In case of PHP_DNS_ANY we use the directly fetch DNS_T_ANY. (step NUMTYPES+1 ) */ for(type = (type_param==PHP_DNS_ANY ? (PHP_DNS_NUM_TYPES + 1) : 0); type < (addtl_recs ? (PHP_DNS_NUM_TYPES + 2) : PHP_DNS_NUM_TYPES) || first_query; type++) { first_query = 0; switch (type) { case 0: type_to_fetch = type_param&PHP_DNS_A ? DNS_T_A : 0; break; case 1: type_to_fetch = type_param&PHP_DNS_NS ? DNS_T_NS : 0; break; case 2: type_to_fetch = type_param&PHP_DNS_CNAME ? DNS_T_CNAME : 0; break; case 3: type_to_fetch = type_param&PHP_DNS_SOA ? DNS_T_SOA : 0; break; case 4: type_to_fetch = type_param&PHP_DNS_PTR ? DNS_T_PTR : 0; break; case 5: type_to_fetch = type_param&PHP_DNS_HINFO ? DNS_T_HINFO : 0; break; case 6: type_to_fetch = type_param&PHP_DNS_MX ? DNS_T_MX : 0; break; case 7: type_to_fetch = type_param&PHP_DNS_TXT ? DNS_T_TXT : 0; break; case 8: type_to_fetch = type_param&PHP_DNS_AAAA ? DNS_T_AAAA : 0; break; case 9: type_to_fetch = type_param&PHP_DNS_SRV ? DNS_T_SRV : 0; break; case 10: type_to_fetch = type_param&PHP_DNS_NAPTR ? DNS_T_NAPTR : 0; break; case 11: type_to_fetch = type_param&PHP_DNS_A6 ? DNS_T_A6 : 0; break; case PHP_DNS_NUM_TYPES: store_results = 0; continue; default: case (PHP_DNS_NUM_TYPES + 1): type_to_fetch = DNS_T_ANY; break; } if (type_to_fetch) { memset(&res, 0, sizeof(res)); res_ninit(&res); res.retrans = 5; res.options &= ~RES_DEFNAMES; n = res_nmkquery(&res, QUERY, Z_STRVAL_P(host), C_IN, type_to_fetch, NULL, 0, NULL, buf.qb2, sizeof buf); if (n<0) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "res_nmkquery() failed"); zval_dtor(return_value); res_nclose(&res); php_dns_free_res(res); RETURN_FALSE; } n = res_nsend(&res, buf.qb2, n, answer.qb2, sizeof answer); if (n<0) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "res_nsend() failed"); zval_dtor(return_value); res_nclose(&res); php_dns_free_res(res); RETURN_FALSE; } cp = answer.qb2 + HFIXEDSZ; end = answer.qb2 + n; hp = (HEADER *)&answer; qd = ntohs(hp->qdcount); an = ntohs(hp->ancount); ns = ntohs(hp->nscount); ar = ntohs(hp->arcount); /* Skip QD entries, they're only used by dn_expand later on */ while (qd-- > 0) { n = dn_skipname(cp, end); if (n < 0) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to parse DNS data received"); zval_dtor(return_value); res_nclose(&res); php_dns_free_res(res); RETURN_FALSE; } cp += n + QFIXEDSZ; } /* YAY! Our real answers! */ while (an-- && cp && cp < end) { zval *retval; cp = php_parserr(cp, &answer, type_to_fetch, store_results, &retval); if (retval != NULL && store_results) { add_next_index_zval(return_value, retval); } } res_nclose(&res); php_dns_free_res(res); } } if (addtl_recs) { /* List of Authoritative Name Servers */ while (ns-- > 0 && cp && cp < end) { zval *retval; cp = php_parserr(cp, &answer, DNS_T_ANY, 1, &retval); if (retval != NULL) { add_next_index_zval(authns, retval); } } /* Additional records associated with authoritative name servers */ while (ar-- > 0 && cp && cp < end) { zval *retval; cp = php_parserr(cp, &answer, DNS_T_ANY, 1, &retval); if (retval != NULL) { add_next_index_zval(addtl, retval); } } } } /* }}} */ #endif /* HAVE_DNS_FUNCS */ #if HAVE_DN_SKIPNAME && HAVE_DN_EXPAND /* {{{ proto bool dns_get_mx(string hostname, array mxhosts [, array weight]) Get MX records corresponding to a given Internet host name */ PHP_FUNCTION(dns_get_mx) { zval *host, *mx_list, *weight_list; int need_weight = 0; int count, qdc; u_short type, weight; u_char ans[MAXPACKET]; char buf[MAXHOSTNAMELEN]; HEADER *hp; u_char *cp, *end; int i; switch (ZEND_NUM_ARGS()) { case 2: if (zend_get_parameters(ht, 2, &host, &mx_list) == FAILURE) { WRONG_PARAM_COUNT; } break; case 3: if (zend_get_parameters(ht, 3, &host, &mx_list, &weight_list) == FAILURE) { WRONG_PARAM_COUNT; } need_weight = 1; zval_dtor(weight_list); /* start with clean array */ array_init(weight_list); break; default: WRONG_PARAM_COUNT; } convert_to_string(host); zval_dtor(mx_list); /* start with clean array */ array_init(mx_list); /* Go! */ i = res_search(Z_STRVAL_P(host), C_IN, DNS_T_MX, (u_char *)&ans, sizeof(ans)); if (i < 0) { RETURN_FALSE; } if (i > (int)sizeof(ans)) { i = sizeof(ans); } hp = (HEADER *)&ans; cp = (u_char *)&ans + HFIXEDSZ; end = (u_char *)&ans +i; for (qdc = ntohs((unsigned short)hp->qdcount); qdc--; cp += i + QFIXEDSZ) { if ((i = dn_skipname(cp, end)) < 0 ) { RETURN_FALSE; } } count = ntohs((unsigned short)hp->ancount); while (--count >= 0 && cp < end) { if ((i = dn_skipname(cp, end)) < 0 ) { RETURN_FALSE; } cp += i; GETSHORT(type, cp); cp += INT16SZ + INT32SZ; GETSHORT(i, cp); if (type != DNS_T_MX) { cp += i; continue; } GETSHORT(weight, cp); if ((i = dn_expand(ans, end, cp, buf, sizeof(buf)-1)) < 0) { RETURN_FALSE; } cp += i; add_next_index_string(mx_list, buf, 1); if (need_weight) { add_next_index_long(weight_list, weight); } } RETURN_TRUE; } /* }}} */ #endif /* HAVE_DN_SKIPNAME && HAVE_DN_EXPAND */ #endif /* HAVE_RES_SEARCH && !(defined(__BEOS__)||defined(PHP_WIN32) || defined(NETWARE)) */ /* * Local variables: * tab-width: 4 * c-basic-offset: 4 * End: * vim600: sw=4 ts=4 fdm=marker * vim<600: sw=4 ts=4 */