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php-src/ext/standard/dns.c
foobar 4821b2f301 ws fixes
2002-10-18 22:08:23 +00:00

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/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2002 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_02.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. |
+----------------------------------------------------------------------+
| Author: |
+----------------------------------------------------------------------+
*/
/* $Id$ */
/* {{{ includes
*/
#include "php.h"
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#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 <winsock.h>
#else /* This holds good for NetWare too, both for Winsock and Berkeley sockets */
#include <netinet/in.h>
#if HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include <netdb.h>
#ifdef _OSD_POSIX
#undef STATUS
#undef T_UNSPEC
#endif
#if HAVE_ARPA_NAMESER_H
#include <arpa/nameser.h>
#endif
#if HAVE_RESOLV_H
#include <resolv.h>
#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"
/* }}} */
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 && !defined(__MacOSX__)
/* MacOSX at this time has support for IPv6, but not inet_pton()
* so disabling IPv6 until further notice. MacOSX 10.1.2 (kalowsky) */
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 && !defined(__MacOSX__)
/* MacOSX at this time has support for IPv6, but not inet_pton()
* so disabling IPv6 until further notice. MacOSX 10.1.2 (kalowsky) */
struct in6_addr addr6;
#endif
struct in_addr addr;
struct hostent *hp;
#if HAVE_IPV6 && !defined(__MacOSX__)
/* MacOSX at this time has support for IPv6, but not inet_pton()
* so disabling IPv6 until further notice. MacOSX 10.1.2 (kalowsky) */
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);
if (array_init(return_value) == FAILURE) {
RETURN_FALSE;
}
hp = gethostbyname(Z_STRVAL_PP(arg));
if (hp == NULL || hp->h_addr_list == NULL) {
RETURN_FALSE;
}
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 checkdnsrr(string host [, string type])
Check DNS records corresponding to a given Internet host name or IP address */
PHP_FUNCTION(checkdnsrr)
{
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 = T_NS;
else if (!strcasecmp("MX", Z_STRVAL_PP(arg2))) type = T_MX;
else if (!strcasecmp("PTR", Z_STRVAL_PP(arg2))) type = T_PTR;
else if (!strcasecmp("ANY", Z_STRVAL_PP(arg2))) type = T_ANY;
else if (!strcasecmp("SOA", Z_STRVAL_PP(arg2))) type = T_SOA;
else if (!strcasecmp("CNAME", Z_STRVAL_PP(arg2))) type = T_CNAME;
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;
}
/* }}} */
#ifndef HFIXEDSZ
#define HFIXEDSZ 12 /* fixed data in header <arpa/nameser.h> */
#endif /* HFIXEDSZ */
#ifndef QFIXEDSZ
#define QFIXEDSZ 4 /* fixed data in query <arpa/nameser.h> */
#endif /* QFIXEDSZ */
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 256
#endif /* MAXHOSTNAMELEN */
/* {{{ proto int getmxrr(string hostname, array mxhosts [, array weight])
Get MX records corresponding to a given Internet host name */
PHP_FUNCTION(getmxrr)
{
pval *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;
pval_destructor(weight_list); /* start with clean array */
if (array_init(weight_list) == FAILURE) {
RETURN_FALSE;
}
break;
default:
WRONG_PARAM_COUNT;
}
convert_to_string(host);
pval_destructor(mx_list); /* start with clean array */
if (array_init(mx_list) == FAILURE ) {
RETURN_FALSE;
}
/* Go! */
i = res_search(Z_STRVAL_P(host), C_IN, T_MX, (u_char *)&ans, sizeof(ans));
if (i < 0) {
RETURN_FALSE;
}
if (i > 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 != 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
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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