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2 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * IP functions |
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5 | * Copyright 2015 Daniel Marschall, ViaThinkSoft |
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6 | * Version 2015-10-27 |
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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 | function get_real_ip() { |
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22 | /* Eindeutige IP Adresse erhalten, auch bei Proxies und (neu:) von SSH connections im CLI modus */ |
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23 | // http://lists.phpbar.de/pipermail/php/Week-of-Mon-20040322/007749.html |
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24 | // Modificated by VTS |
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25 | // Version: 2015-10-27 |
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26 | |||
27 | // TODO: ipv6 |
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28 | |||
29 | if (isset($_SERVER['SSH_CLIENT'])) { $ary = explode(' ', $_SERVER['SSH_CLIENT']); return $ary[0]; } |
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30 | if (isset($_SERVER['SSH_CONNECTION'])) { $ary = explode(' ', $_SERVER['SSH_CONNECTION']); return $ary[0]; } |
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31 | |||
32 | $client_ip = (isset($_SERVER['HTTP_CLIENT_IP'])) ? $_SERVER['HTTP_CLIENT_IP'] : ''; |
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33 | |||
34 | // 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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35 | // $x_forwarded_for = (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : ''; |
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36 | $x_forwarded_for = ''; |
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37 | |||
38 | $remote_addr = (isset($_SERVER['REMOTE_ADDR'])) ? $_SERVER['REMOTE_ADDR'] : ''; |
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39 | |||
40 | if (!empty($client_ip)) { |
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41 | $ip_expl = explode('.', $client_ip); |
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42 | $referer = explode('.', $remote_addr); |
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43 | if ($referer[0] != $ip_expl[0]) { |
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44 | $ip = array_reverse($ip_expl); |
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45 | $return = implode('.', $ip); |
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46 | } else { |
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47 | $return = $client_ip; |
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48 | } |
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49 | } else if (!empty($x_forwarded_for)) { |
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50 | if (strstr($x_forwarded_for, ',')) { |
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51 | $ip_expl = explode(',', $x_forwarded_for); |
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52 | $return = end($ip_expl); |
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53 | } else { |
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54 | $return = $x_forwarded_for; |
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55 | } |
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56 | } else { |
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57 | $return = $remote_addr; |
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58 | } |
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59 | unset ($client_ip, $x_forwarded_for, $remote_addr, $ip_expl); |
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60 | return $return; |
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61 | } |