mirror of
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509 lines
14 KiB
C
509 lines
14 KiB
C
/*
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+----------------------------------------------------------------------+
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| https://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Pierre A. Joye <pierre@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "php.h"
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#include <windows.h>
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#include <Winbase.h >
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#include <Windns.h>
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#include "php_dns.h"
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#define PHP_DNS_NUM_TYPES 12 /* Number of DNS Types Supported by PHP currently */
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#define PHP_DNS_A 0x00000001
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#define PHP_DNS_NS 0x00000002
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#define PHP_DNS_CNAME 0x00000010
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#define PHP_DNS_SOA 0x00000020
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#define PHP_DNS_PTR 0x00000800
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#define PHP_DNS_HINFO 0x00001000
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#define PHP_DNS_MX 0x00004000
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#define PHP_DNS_TXT 0x00008000
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#define PHP_DNS_A6 0x01000000
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#define PHP_DNS_SRV 0x02000000
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#define PHP_DNS_NAPTR 0x04000000
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#define PHP_DNS_AAAA 0x08000000
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#define PHP_DNS_ANY 0x10000000
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#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)
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PHP_FUNCTION(dns_get_mx) /* {{{ */
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{
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char *hostname;
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size_t hostname_len;
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zval *mx_list, *weight_list = NULL;
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DNS_STATUS status; /* Return value of DnsQuery_A() function */
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PDNS_RECORD pResult, pRec; /* Pointer to DNS_RECORD structure */
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if (zend_parse_parameters(ZEND_NUM_ARGS(), "sz|z", &hostname, &hostname_len, &mx_list, &weight_list) == FAILURE) {
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RETURN_THROWS();
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}
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status = DnsQuery_A(hostname, DNS_TYPE_MX, DNS_QUERY_STANDARD, NULL, &pResult, NULL);
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if (status) {
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RETURN_FALSE;
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}
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mx_list = zend_try_array_init(mx_list);
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if (!mx_list) {
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goto cleanup;
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}
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if (weight_list) {
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weight_list = zend_try_array_init(weight_list);
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if (!weight_list) {
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goto cleanup;
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}
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}
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for (pRec = pResult; pRec; pRec = pRec->pNext) {
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DNS_SRV_DATA *srv = &pRec->Data.Srv;
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if (pRec->wType != DNS_TYPE_MX) {
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continue;
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}
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add_next_index_string(mx_list, pRec->Data.MX.pNameExchange);
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if (weight_list) {
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add_next_index_long(weight_list, srv->wPriority);
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}
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}
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cleanup:
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/* Free memory allocated for DNS records. */
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DnsRecordListFree(pResult, DnsFreeRecordListDeep);
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RETURN_TRUE;
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}
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/* }}} */
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/* {{{ Check DNS records corresponding to a given Internet host name or IP address */
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PHP_FUNCTION(dns_check_record)
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{
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char *hostname;
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size_t hostname_len;
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zend_string *rectype = NULL;
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int type = DNS_TYPE_MX;
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DNS_STATUS status; /* Return value of DnsQuery_A() function */
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PDNS_RECORD pResult; /* Pointer to DNS_RECORD structure */
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if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|S", &hostname, &hostname_len, &rectype) == FAILURE) {
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RETURN_THROWS();
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}
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if (hostname_len == 0) {
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zend_argument_value_error(1, "cannot be empty");
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RETURN_THROWS();
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}
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if (rectype) {
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if (zend_string_equals_literal_ci(rectype, "A")) type = DNS_TYPE_A;
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else if (zend_string_equals_literal_ci(rectype, "NS")) type = DNS_TYPE_NS;
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else if (zend_string_equals_literal_ci(rectype, "MX")) type = DNS_TYPE_MX;
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else if (zend_string_equals_literal_ci(rectype, "PTR")) type = DNS_TYPE_PTR;
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else if (zend_string_equals_literal_ci(rectype, "ANY")) type = DNS_TYPE_ANY;
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else if (zend_string_equals_literal_ci(rectype, "SOA")) type = DNS_TYPE_SOA;
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else if (zend_string_equals_literal_ci(rectype, "TXT")) type = DNS_TYPE_TEXT;
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else if (zend_string_equals_literal_ci(rectype, "CNAME")) type = DNS_TYPE_CNAME;
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else if (zend_string_equals_literal_ci(rectype, "AAAA")) type = DNS_TYPE_AAAA;
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else if (zend_string_equals_literal_ci(rectype, "SRV")) type = DNS_TYPE_SRV;
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else if (zend_string_equals_literal_ci(rectype, "NAPTR")) type = DNS_TYPE_NAPTR;
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else if (zend_string_equals_literal_ci(rectype, "A6")) type = DNS_TYPE_A6;
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else {
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zend_argument_value_error(2, "must be a valid DNS record type");
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RETURN_THROWS();
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}
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}
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status = DnsQuery_A(hostname, type, DNS_QUERY_STANDARD, NULL, &pResult, NULL);
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if (status) {
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RETURN_FALSE;
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}
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RETURN_TRUE;
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}
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/* }}} */
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/* {{{ php_parserr */
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static void php_parserr(PDNS_RECORD pRec, int type_to_fetch, int store, bool raw, zval *subarray)
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{
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int type;
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u_long ttl;
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type = pRec->wType;
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ttl = pRec->dwTtl;
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ZVAL_UNDEF(subarray);
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if (type_to_fetch != DNS_TYPE_ANY && type != type_to_fetch) {
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return;
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}
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if (!store) {
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return;
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}
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array_init(subarray);
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add_assoc_string(subarray, "host", pRec->pName);
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add_assoc_string(subarray, "class", "IN");
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add_assoc_long(subarray, "ttl", ttl);
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if (raw) {
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add_assoc_long(subarray, "type", type);
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add_assoc_stringl(subarray, "data", (char*) &pRec->Data, (uint32_t) pRec->wDataLength);
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return;
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}
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switch (type) {
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case DNS_TYPE_A: {
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IN_ADDR ipaddr;
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ipaddr.S_un.S_addr = (pRec->Data.A.IpAddress);
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add_assoc_string(subarray, "type", "A");
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add_assoc_string(subarray, "ip", inet_ntoa(ipaddr));
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break;
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}
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case DNS_TYPE_MX:
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add_assoc_string(subarray, "type", "MX");
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add_assoc_long(subarray, "pri", pRec->Data.Srv.wPriority);
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/* no break; */
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case DNS_TYPE_CNAME:
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if (type == DNS_TYPE_CNAME) {
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add_assoc_string(subarray, "type", "CNAME");
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}
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/* no break; */
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case DNS_TYPE_NS:
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if (type == DNS_TYPE_NS) {
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add_assoc_string(subarray, "type", "NS");
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}
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/* no break; */
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case DNS_TYPE_PTR:
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if (type == DNS_TYPE_PTR) {
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add_assoc_string(subarray, "type", "PTR");
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}
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add_assoc_string(subarray, "target", pRec->Data.MX.pNameExchange);
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break;
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/* Not available on windows, the query is possible but there is no DNS_HINFO_DATA structure */
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case DNS_TYPE_HINFO:
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case DNS_TYPE_TEXT:
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{
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DWORD i = 0;
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DNS_TXT_DATA *data_txt = &pRec->Data.TXT;
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DWORD count = data_txt->dwStringCount;
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zend_string *txt;
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char *txt_dst;
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size_t txt_len = 0;
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zval entries;
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add_assoc_string(subarray, "type", "TXT");
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array_init(&entries);
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for (i = 0; i < count; i++) {
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txt_len += strlen(data_txt->pStringArray[i]);
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}
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txt = zend_string_alloc(txt_len, 0);
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txt_dst = ZSTR_VAL(txt);
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for (i = 0; i < count; i++) {
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size_t len = strlen(data_txt->pStringArray[i]);
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memcpy(txt_dst, data_txt->pStringArray[i], len);
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add_next_index_stringl(&entries, data_txt->pStringArray[i], len);
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txt_dst += len;
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}
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*txt_dst = '\0';
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add_assoc_str(subarray, "txt", txt);
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add_assoc_zval(subarray, "entries", &entries);
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}
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break;
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case DNS_TYPE_SOA:
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{
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DNS_SOA_DATA *data_soa = &pRec->Data.Soa;
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add_assoc_string(subarray, "type", "SOA");
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add_assoc_string(subarray, "mname", data_soa->pNamePrimaryServer);
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add_assoc_string(subarray, "rname", data_soa->pNameAdministrator);
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add_assoc_long(subarray, "serial", data_soa->dwSerialNo);
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add_assoc_long(subarray, "refresh", data_soa->dwRefresh);
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add_assoc_long(subarray, "retry", data_soa->dwRetry);
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add_assoc_long(subarray, "expire", data_soa->dwExpire);
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add_assoc_long(subarray, "minimum-ttl", data_soa->dwDefaultTtl);
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}
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break;
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case DNS_TYPE_AAAA:
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{
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DNS_AAAA_DATA *data_aaaa = &pRec->Data.AAAA;
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char buf[sizeof("AAAA:AAAA:AAAA:AAAA:AAAA:AAAA:AAAA:AAAA")];
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char *tp = buf;
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int i;
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unsigned short out[8];
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int have_v6_break = 0, in_v6_break = 0;
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for (i = 0; i < 4; ++i) {
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DWORD chunk = data_aaaa->Ip6Address.IP6Dword[i];
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out[i * 2] = htons(LOWORD(chunk));
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out[i * 2 + 1] = htons(HIWORD(chunk));
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}
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for(i=0; i < 8; i++) {
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if (out[i] != 0) {
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if (tp > (uint8_t *)buf) {
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in_v6_break = 0;
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tp[0] = ':';
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tp++;
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}
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tp += sprintf((char*)tp,"%x", out[i]);
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} else {
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if (!have_v6_break) {
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have_v6_break = 1;
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in_v6_break = 1;
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tp[0] = ':';
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tp++;
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} else if (!in_v6_break) {
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tp[0] = ':';
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tp++;
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tp[0] = '0';
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tp++;
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}
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}
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}
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if (have_v6_break && in_v6_break) {
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tp[0] = ':';
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tp++;
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}
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tp[0] = '\0';
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add_assoc_string(subarray, "type", "AAAA");
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add_assoc_string(subarray, "ipv6", buf);
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}
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break;
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#if 0
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/* Won't be implemented. A6 is deprecated. (Pierre) */
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case DNS_TYPE_A6:
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break;
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#endif
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case DNS_TYPE_SRV:
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{
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DNS_SRV_DATA *data_srv = &pRec->Data.Srv;
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add_assoc_string(subarray, "type", "SRV");
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add_assoc_long(subarray, "pri", data_srv->wPriority);
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add_assoc_long(subarray, "weight", data_srv->wWeight);
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add_assoc_long(subarray, "port", data_srv->wPort);
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add_assoc_string(subarray, "target", data_srv->pNameTarget);
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}
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break;
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case DNS_TYPE_NAPTR:
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{
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DNS_NAPTR_DATA * data_naptr = &pRec->Data.Naptr;
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add_assoc_string(subarray, "type", "NAPTR");
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add_assoc_long(subarray, "order", data_naptr->wOrder);
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add_assoc_long(subarray, "pref", data_naptr->wPreference);
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add_assoc_string(subarray, "flags", data_naptr->pFlags);
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add_assoc_string(subarray, "services", data_naptr->pService);
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add_assoc_string(subarray, "regex", data_naptr->pRegularExpression);
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add_assoc_string(subarray, "replacement", data_naptr->pReplacement);
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}
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break;
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default:
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/* unknown type */
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ZVAL_UNDEF(subarray);
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return;
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}
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}
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/* }}} */
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/* {{{ Get any Resource Record corresponding to a given Internet host name */
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PHP_FUNCTION(dns_get_record)
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{
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char *hostname;
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size_t hostname_len;
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zend_long type_param = PHP_DNS_ANY;
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zval *authns = NULL, *addtl = NULL;
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int type, type_to_fetch, first_query = 1, store_results = 1;
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bool raw = 0;
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if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|lz!z!b",
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&hostname, &hostname_len, &type_param, &authns, &addtl, &raw) == FAILURE) {
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RETURN_THROWS();
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}
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if (authns) {
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authns = zend_try_array_init(authns);
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if (!authns) {
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RETURN_THROWS();
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}
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}
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if (addtl) {
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addtl = zend_try_array_init(addtl);
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if (!addtl) {
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RETURN_THROWS();
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}
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}
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if (!raw) {
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if ((type_param & ~PHP_DNS_ALL) && (type_param != PHP_DNS_ANY)) {
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zend_argument_value_error(2, "must be a DNS_* constant");
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RETURN_THROWS();
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}
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} else {
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if ((type_param < 1) || (type_param > 0xFFFF)) {
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zend_argument_value_error(2, "must be between 1 and 65535 when argument #5 ($raw) is true");
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RETURN_THROWS();
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}
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}
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/* Initialize the return array */
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array_init(return_value);
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if (raw) {
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type = -1;
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} else if (type_param == PHP_DNS_ANY) {
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type = PHP_DNS_NUM_TYPES + 1;
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} else {
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type = 0;
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}
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for ( ;
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type < (addtl ? (PHP_DNS_NUM_TYPES + 2) : PHP_DNS_NUM_TYPES) || first_query;
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type++
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) {
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DNS_STATUS status; /* Return value of DnsQuery_A() function */
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PDNS_RECORD pResult, pRec; /* Pointer to DNS_RECORD structure */
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first_query = 0;
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switch (type) {
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case -1: /* raw */
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type_to_fetch = type_param;
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/* skip over the rest and go directly to additional records */
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type = PHP_DNS_NUM_TYPES - 1;
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break;
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case 0:
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type_to_fetch = type_param&PHP_DNS_A ? DNS_TYPE_A : 0;
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break;
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case 1:
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type_to_fetch = type_param&PHP_DNS_NS ? DNS_TYPE_NS : 0;
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break;
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case 2:
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type_to_fetch = type_param&PHP_DNS_CNAME ? DNS_TYPE_CNAME : 0;
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break;
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case 3:
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type_to_fetch = type_param&PHP_DNS_SOA ? DNS_TYPE_SOA : 0;
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break;
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case 4:
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type_to_fetch = type_param&PHP_DNS_PTR ? DNS_TYPE_PTR : 0;
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break;
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case 5:
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type_to_fetch = type_param&PHP_DNS_HINFO ? DNS_TYPE_HINFO : 0;
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break;
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case 6:
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type_to_fetch = type_param&PHP_DNS_MX ? DNS_TYPE_MX : 0;
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break;
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case 7:
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type_to_fetch = type_param&PHP_DNS_TXT ? DNS_TYPE_TEXT : 0;
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break;
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case 8:
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type_to_fetch = type_param&PHP_DNS_AAAA ? DNS_TYPE_AAAA : 0;
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break;
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case 9:
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type_to_fetch = type_param&PHP_DNS_SRV ? DNS_TYPE_SRV : 0;
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break;
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case 10:
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type_to_fetch = type_param&PHP_DNS_NAPTR ? DNS_TYPE_NAPTR : 0;
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break;
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case 11:
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type_to_fetch = type_param&PHP_DNS_A6 ? DNS_TYPE_A6 : 0;
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break;
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case PHP_DNS_NUM_TYPES:
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store_results = 0;
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continue;
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default:
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case (PHP_DNS_NUM_TYPES + 1):
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type_to_fetch = DNS_TYPE_ANY;
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break;
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}
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if (type_to_fetch) {
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status = DnsQuery_A(hostname, type_to_fetch, DNS_QUERY_STANDARD, NULL, &pResult, NULL);
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if (status) {
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if (status == DNS_INFO_NO_RECORDS || status == DNS_ERROR_RCODE_NAME_ERROR) {
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continue;
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} else {
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php_error_docref(NULL, E_WARNING, "DNS Query failed");
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zend_array_destroy(Z_ARR_P(return_value));
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RETURN_FALSE;
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}
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}
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for (pRec = pResult; pRec; pRec = pRec->pNext) {
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zval retval;
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if (pRec->Flags.S.Section == DnsSectionAnswer) {
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php_parserr(pRec, type_to_fetch, store_results, raw, &retval);
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if (!Z_ISUNDEF(retval) && store_results) {
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add_next_index_zval(return_value, &retval);
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}
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}
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|
|
|
if (authns && pRec->Flags.S.Section == DnsSectionAuthority) {
|
|
|
|
php_parserr(pRec, type_to_fetch, 1, raw, &retval);
|
|
if (!Z_ISUNDEF(retval)) {
|
|
add_next_index_zval(authns, &retval);
|
|
}
|
|
}
|
|
|
|
/* Stupid typo in PSDK 6.1, WinDNS.h(1258)... */
|
|
#ifndef DnsSectionAdditional
|
|
# ifdef DnsSectionAddtional
|
|
# define DnsSectionAdditional DnsSectionAddtional
|
|
# else
|
|
# define DnsSectionAdditional 3
|
|
# endif
|
|
#endif
|
|
if (addtl && pRec->Flags.S.Section == DnsSectionAdditional) {
|
|
php_parserr(pRec, type_to_fetch, 1, raw, &retval);
|
|
if (!Z_ISUNDEF(retval)) {
|
|
add_next_index_zval(addtl, &retval);
|
|
}
|
|
}
|
|
}
|
|
/* Free memory allocated for DNS records. */
|
|
DnsRecordListFree(pResult, DnsFreeRecordListDeep);
|
|
}
|
|
}
|
|
}
|
|
/* }}} */
|