1 | <?php |
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2 | /** |
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3 | * NetCommand.php |
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4 | * |
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5 | * -Description- |
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6 | * |
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7 | * This program is free software: you can redistribute it and/or modify |
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8 | * it under the terms of the GNU General Public License as published by |
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9 | * the Free Software Foundation, either version 3 of the License, or |
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10 | * (at your option) any later version. |
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11 | * |
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12 | * This program is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the |
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15 | * GNU General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU General Public License |
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18 | * along with this program. If not, see <https://www.gnu.org/licenses/>. |
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19 | * |
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20 | * @link https://www.librenms.org |
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21 | * |
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22 | * @copyright 2019 Tony Murray |
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23 | * @author Tony Murray <[email protected]> |
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24 | */ |
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25 | |||
26 | namespace App\Http\Controllers\Ajax; |
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27 | |||
28 | use App\Http\Controllers\Controller; |
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29 | use Illuminate\Http\Request; |
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30 | use Illuminate\Support\Str; |
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31 | use LibreNMS\Config; |
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32 | use Symfony\Component\HttpFoundation\StreamedResponse; |
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33 | use Symfony\Component\Process\Process; |
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34 | |||
35 | class NetCommand extends Controller |
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36 | { |
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37 | public function run(Request $request) |
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38 | { |
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39 | $this->validate($request, [ |
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40 | 'cmd' => 'in:whois,ping,tracert,nmap', |
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41 | 'query' => 'ip_or_hostname', |
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42 | ]); |
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43 | |||
44 | ini_set('allow_url_fopen', '0'); |
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45 | |||
46 | switch ($request->get('cmd')) { |
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47 | case 'whois': |
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48 | $cmd = [Config::get('whois', 'whois'), $request->get('query')]; |
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49 | break; |
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50 | case 'ping': |
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51 | $cmd = [Config::get('ping', 'ping'), '-c', '5', $request->get('query')]; |
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52 | break; |
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53 | case 'tracert': |
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54 | $cmd = [Config::get('mtr', 'mtr'), '-r', '-c', '5', $request->get('query')]; |
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55 | break; |
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56 | case 'nmap': |
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57 | if (! $request->user()->isAdmin()) { |
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58 | return response('Insufficient privileges'); |
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59 | } else { |
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60 | $cmd = [Config::get('nmap', 'nmap'), $request->get('query')]; |
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61 | } |
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62 | break; |
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63 | default: |
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64 | return response('Invalid command'); |
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65 | } |
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66 | |||
67 | $proc = new Process($cmd); |
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68 | $proc->setTimeout(240); |
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69 | |||
70 | //stream output |
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71 | return (new StreamedResponse( |
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72 | function () use ($proc, $request) { |
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73 | // a bit dirty, bust browser initial cache |
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74 | $ua = $request->header('User-Agent'); |
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75 | if (Str::contains($ua, ['Chrome', 'Trident'])) { |
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76 | $char = "\f"; // line feed |
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77 | } else { |
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78 | $char = ''; |
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79 | } |
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80 | echo str_repeat($char, 4096); |
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81 | echo PHP_EOL; // avoid first line mess ups due to line feed |
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82 | |||
83 | $proc->run(function ($type, $buffer) { |
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84 | echo $buffer; |
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85 | ob_flush(); |
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86 | flush(); |
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87 | }); |
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88 | }, |
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89 | 200, |
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90 | [ |
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91 | 'Content-Type' => 'text/plain; charset=utf-8', |
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92 | 'X-Accel-Buffering' => 'no', |
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93 | ] |
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94 | ))->send(); |
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95 | } |
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96 | } |
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97 |