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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 24 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | /* |
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| 4 | * IP functions |
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| 5 | * Copyright 2015-2022 Daniel Marschall, ViaThinkSoft |
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| 6 | * Version 2021-01-07 |
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| 7 | * |
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| 8 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 9 | * you may not use this file except in compliance with the License. |
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| 10 | * You may obtain a copy of the License at |
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| 11 | * |
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| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 13 | * |
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| 14 | * Unless required by applicable law or agreed to in writing, software |
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| 15 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 17 | * See the License for the specific language governing permissions and |
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| 18 | * limitations under the License. |
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| 19 | */ |
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| 20 | |||
| 21 | // Attention in re $allow_proxy: It is not secure to use these, since they are not validated: http://www.thespanner.co.uk/2007/12/02/faking-the-unexpected/ |
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| 22 | function get_real_ip($allow_proxy=false) { |
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| 23 | /* Eindeutige IP Adresse erhalten, auch bei Proxies und (neu:) von SSH connections im CLI modus */ |
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| 24 | // http://lists.phpbar.de/pipermail/php/Week-of-Mon-20040322/007749.html |
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| 25 | // Modificated by VTS |
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| 26 | // Version: 2021-01-07 |
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| 27 | |||
| 28 | // TODO: ipv6 |
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| 29 | |||
| 30 | if (isset($_SERVER['SSH_CLIENT'])) { $ary = explode(' ', $_SERVER['SSH_CLIENT']); return $ary[0]; } |
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| 31 | if (isset($_SERVER['SSH_CONNECTION'])) { $ary = explode(' ', $_SERVER['SSH_CONNECTION']); return $ary[0]; } |
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| 32 | |||
| 33 | $client_ip = ($allow_proxy && isset($_SERVER['HTTP_CLIENT_IP'])) ? $_SERVER['HTTP_CLIENT_IP'] : ''; |
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| 34 | $x_forwarded_for = ($allow_proxy && isset($_SERVER['HTTP_X_FORWARDED_FOR'])) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : ''; |
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| 35 | $remote_addr = (isset($_SERVER['REMOTE_ADDR'])) ? $_SERVER['REMOTE_ADDR'] : ''; |
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| 36 | |||
| 37 | if (!empty($client_ip)) { |
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| 38 | $ip_expl = explode('.', $client_ip); |
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| 39 | $referer = explode('.', $remote_addr); |
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| 40 | if ($referer[0] != $ip_expl[0]) { |
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| 41 | $ip = array_reverse($ip_expl); |
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| 42 | $return = implode('.', $ip); |
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| 43 | } else { |
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| 44 | $return = $client_ip; |
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| 45 | } |
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| 46 | } else if (!empty($x_forwarded_for)) { |
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| 47 | if (strstr($x_forwarded_for, ',')) { |
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| 48 | $ip_expl = explode(',', $x_forwarded_for); |
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| 49 | $return = end($ip_expl); |
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| 50 | } else { |
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| 51 | $return = $x_forwarded_for; |
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| 52 | } |
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| 53 | } else { |
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| 54 | $return = $remote_addr; |
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| 55 | } |
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| 56 | unset ($client_ip, $x_forwarded_for, $remote_addr, $ip_expl); |
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| 57 | return $return; |
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| 2 | daniel-mar | 58 | } |