Rev 13 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | /* |
||
| 4 | * IP resolution functions |
||
| 5 | * Copyright 2012 Daniel Marschall, ViaThinkSoft |
||
| 6 | * Version 2012-02-02 |
||
| 7 | * |
||
| 8 | * Licensed under the Apache License, Version 2.0 (the "License"); |
||
| 9 | * you may not use this file except in compliance with the License. |
||
| 10 | * You may obtain a copy of the License at |
||
| 11 | * |
||
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
||
| 13 | * |
||
| 14 | * Unless required by applicable law or agreed to in writing, software |
||
| 15 | * distributed under the License is distributed on an "AS IS" BASIS, |
||
| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
||
| 17 | * See the License for the specific language governing permissions and |
||
| 18 | * limitations under the License. |
||
| 19 | */ |
||
| 20 | |||
| 21 | /* -- Testcases -- |
||
| 22 | print_r(gethostbynamel6('example.com')); |
||
| 23 | print_r(gethostbynamel6('ipv6.google.com')); |
||
| 24 | print_r(gethostbynamel6('google.de')); |
||
| 25 | print_r(gethostbynamel6('ipv6.google.de')); |
||
| 26 | print_r(gethostbynamel6('abc')); |
||
| 27 | print_r(gethostbynamel6('111.111.111.111')); |
||
| 28 | print_r(gethostbynamel6('2620::2d0:200:0:0:0:10')); |
||
| 29 | */ |
||
| 30 | |||
| 31 | function resolveip($host) { |
||
| 32 | return gethostbynamel6($host); |
||
| 33 | } |
||
| 34 | |||
| 35 | # http://www.php.net/manual/en/function.gethostbyname.php#70936 |
||
| 36 | # Modified by ViaThinkSoft |
||
| 37 | |||
| 38 | # VTS-Modified: try_a default false -> true |
||
| 39 | function gethostbyname6($host, $try_a = /* false */ true) { |
||
| 40 | // get AAAA record for $host |
||
| 41 | // if $try_a is true, if AAAA fails, it tries for A |
||
| 42 | // the first match found is returned |
||
| 43 | // otherwise returns false |
||
| 44 | |||
| 45 | $dns = gethostbynamel6($host, $try_a); |
||
| 46 | if ($dns == false) { |
||
| 47 | return false; |
||
| 48 | } else { |
||
| 49 | return $dns[0]; |
||
| 50 | } |
||
| 51 | } |
||
| 52 | |||
| 53 | # VTS-Modified: try_a default false -> true |
||
| 54 | function gethostbynamel6($host, $try_a = /* false */ true) { |
||
| 55 | # Added by VTS |
||
| 56 | $ipfilter = filter_var($host,FILTER_VALIDATE_IP); |
||
| 57 | if ($ipfilter != '') return array($ipfilter); |
||
| 58 | |||
| 59 | // get AAAA records for $host, |
||
| 60 | // if $try_a is true, if AAAA fails, it tries for A |
||
| 61 | // results are returned in an array of ips found matching type |
||
| 62 | // otherwise returns false |
||
| 63 | |||
| 64 | $dns6 = dns_get_record($host, DNS_AAAA); |
||
| 65 | if ($try_a == true) { |
||
| 66 | $dns4 = dns_get_record($host, DNS_A); |
||
| 67 | $dns = array_merge($dns4, $dns6); |
||
| 68 | } else { |
||
| 69 | $dns = $dns6; |
||
| 70 | } |
||
| 71 | $ip6 = array(); |
||
| 72 | $ip4 = array(); |
||
| 73 | foreach ($dns as $record) { |
||
| 74 | if ($record["type"] == "A") { |
||
| 75 | $ip4[] = $record["ip"]; |
||
| 76 | } |
||
| 77 | if ($record["type"] == "AAAA") { |
||
| 78 | $ip6[] = $record["ipv6"]; |
||
| 79 | } |
||
| 80 | } |
||
| 81 | |||
| 24 | daniel-mar | 82 | # VTS-Modified: Output IP4+IP6 merged instead of giving only IPv6 or IPv4 |
| 2 | daniel-mar | 83 | $merged = array_merge($ip4, $ip6); |
| 84 | if (count($merged) < 1) { |
||
| 85 | return false; |
||
| 86 | } else { |
||
| 87 | return $merged; |
||
| 88 | } |
||
| 24 | daniel-mar | 89 | /* |
| 2 | daniel-mar | 90 | if (count($ip6) < 1) { |
| 91 | if ($try_a == true) { |
||
| 92 | if (count($ip4) < 1) { |
||
| 93 | return false; |
||
| 94 | } else { |
||
| 95 | return $ip4; |
||
| 96 | } |
||
| 97 | } else { |
||
| 98 | return false; |
||
| 99 | } |
||
| 100 | } else { |
||
| 101 | return $ip6; |
||
| 102 | } |
||
| 24 | daniel-mar | 103 | */ |
| 2 | daniel-mar | 104 | } |