1 | <?php |
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2 | /** |
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3 | * firebrick.inc.php |
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4 | * |
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5 | * LibreNMS bgp_peers for Firebrick 2700/2900/6000 |
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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 2020 Chris Malton (@cjsoftuk) |
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23 | * @author Chris Malton (@cjsoftuk) |
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24 | */ |
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25 | |||
26 | use LibreNMS\Config; |
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27 | use LibreNMS\Util\IP; |
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28 | |||
29 | $bgpPeersCache = snmpwalk_cache_multi_oid($device, 'fbBgpPeerTable', [], 'FIREBRICK-BGP-MIB', 'firebrick'); |
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30 | foreach ($bgpPeersCache as $key => $value) { |
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31 | $oid = explode('.', $key); |
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32 | $protocol = $oid[0]; |
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33 | $address = str_replace($oid[0] . '.', '', $key); |
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34 | if (strlen($address) > 15) { |
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35 | $address = IP::fromHexString($address)->compressed(); |
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36 | } |
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37 | if (isset($value['fbBgpPeerTableId']) && $value['fbBgpPeerTableId'] !== '') { |
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38 | $bgpPeers[$value['fbBgpPeerTableId']][$address] = $value; |
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39 | } else { |
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40 | $bgpPeers[0][$address] = $value; |
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41 | } |
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42 | } |
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43 | unset($bgpPeersCache); |
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44 | |||
45 | foreach ($bgpPeers as $vrfId => $vrf) { |
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46 | if (empty($vrfId)) { |
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47 | $checkVrf = ' AND `vrf_id` IS NULL '; |
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48 | // Force to null to avoid 0s going to the DB instead of Nulls |
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49 | $vrfId = null; |
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50 | } else { |
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51 | $checkVrf = ' AND vrf_id = ? '; |
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52 | $vrfs = [ |
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53 | 'vrf_oid' => 'firebrick.' . $vrfId, |
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54 | 'vrf_name' => $vrfId, |
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55 | 'device_id' => $device['device_id'], |
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56 | ]; |
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57 | |||
58 | if (! dbFetchCell('SELECT COUNT(*) FROM vrfs WHERE device_id = ? AND `vrf_oid`=?', [$device['device_id'], $vrfs['vrf_oid']])) { |
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59 | dbInsert($vrfs, 'vrfs'); |
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60 | } |
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61 | } |
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62 | foreach ($vrf as $address => $value) { |
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63 | $astext = get_astext($value['fbBgpPeerRemoteAS']); |
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64 | if (dbFetchCell('SELECT COUNT(*) from `bgpPeers` WHERE device_id = ? AND bgpPeerIdentifier = ? ' . $checkVrf, [$device['device_id'], $address, $vrfId]) < '1') { |
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65 | $peers = [ |
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66 | 'device_id' => $device['device_id'], |
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67 | 'vrf_id' => $vrfId, |
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68 | 'bgpPeerIdentifier' => $address, |
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69 | 'bgpPeerRemoteAs' => $value['fbBgpPeerRemoteAS'], |
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70 | 'bgpPeerState' => 'idle', |
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71 | 'bgpPeerAdminStatus' => 'stop', |
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72 | 'bgpLocalAddr' => $value['fbBgpPeerLocalAddress'], |
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73 | 'bgpPeerRemoteAddr' => $value['fbBgpPeerAddress'], |
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74 | 'bgpPeerInUpdates' => 0, |
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75 | 'bgpPeerOutUpdates' => 0, |
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76 | 'bgpPeerInTotalMessages' => 0, |
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77 | 'bgpPeerOutTotalMessages' => 0, |
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78 | 'bgpPeerFsmEstablishedTime' => 0, |
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79 | 'bgpPeerInUpdateElapsedTime' => 0, |
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80 | 'astext' => $astext, |
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81 | ]; |
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82 | dbInsert($peers, 'bgpPeers'); |
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83 | if (Config::get('autodiscovery.bgp')) { |
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84 | $name = gethostbyaddr($address); |
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85 | discover_new_device($name, $device, 'BGP'); |
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86 | } |
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87 | echo '+'; |
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88 | } else { |
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89 | dbUpdate(['bgpPeerRemoteAs' => $value['fbBgpPeerRemoteAS'], 'astext' => $astext], 'bgpPeers', 'device_id = ? AND bgpPeerIdentifier = ? AND vrf_id = ?', [$device['device_id'], $address, $vrfId]); |
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90 | echo '.'; |
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91 | } |
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92 | } |
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93 | } |
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94 | // clean up peers |
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95 | $peers = dbFetchRows('SELECT `vrf_id`, `bgpPeerIdentifier` FROM `bgpPeers` WHERE `device_id` = ?', [$device['device_id']]); |
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96 | foreach ($peers as $value) { |
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97 | $vrfId = $value['vrf_id']; |
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98 | $address = $value['bgpPeerIdentifier']; |
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99 | |||
100 | // Cleanup code to deal with 0 vs Null in the DB |
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101 | if ($vrfId === 0) { |
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102 | // Database says it's table 0 - which is wrong. It should be "null" for global table |
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103 | $deleted = dbDelete('bgpPeers', 'device_id = ? AND bgpPeerIdentifier = ? AND vrf_id = ?', [$device['device_id'], $address, $vrfId]); |
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104 | echo str_repeat('-', $deleted); |
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105 | continue; |
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106 | } else { |
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107 | $testVrfId = empty($vrfId) ? 0 : $vrfId; |
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108 | } |
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109 | |||
110 | if (empty($bgpPeers[$testVrfId][$address])) { |
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111 | if ($vrfId === null) { |
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112 | $deleted = dbDelete('bgpPeers', 'device_id = ? AND bgpPeerIdentifier = ? AND vrf_id IS NULL', [$device['device_id'], $address]); |
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113 | } else { |
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114 | $deleted = dbDelete('bgpPeers', 'device_id = ? AND bgpPeerIdentifier = ? AND vrf_id = ?', [$device['device_id'], $address, $vrfId]); |
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115 | } |
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116 | echo str_repeat('-', $deleted); |
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117 | } |
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118 | } |
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119 | |||
120 | // TODO: Fix me to use the local AS as published |
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121 | $bgpLocalAs = $bgpPeers[0][array_keys($bgpPeers[0])[0]]['fbBgpPeerRemoteAS']; |
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122 |
Let?s assume that you have a directory layout like this:
and let?s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: