1 | <?php |
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2 | |||
3 | use LibreNMS\Config; |
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4 | |||
5 | function get_cache($host, $value) |
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6 | { |
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7 | global $dev_cache; |
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8 | |||
9 | if (! isset($dev_cache[$host][$value])) { |
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10 | switch ($value) { |
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11 | case 'device_id': |
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12 | // Try by hostname |
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13 | $ip = inet_pton($host); |
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14 | if (inet_ntop($ip) === false) { |
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15 | $dev_cache[$host]['device_id'] = dbFetchCell('SELECT `device_id` FROM devices WHERE `hostname` = ? OR `sysName` = ?', [$host, $host]); |
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16 | } else { |
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17 | $dev_cache[$host]['device_id'] = dbFetchCell('SELECT `device_id` FROM devices WHERE `hostname` = ? OR `sysName` = ? OR `ip` = ?', [$host, $host, $ip]); |
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18 | } |
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19 | // If failed, try by IP |
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20 | if (! is_numeric($dev_cache[$host]['device_id'])) { |
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21 | $dev_cache[$host]['device_id'] = dbFetchCell('SELECT `device_id` FROM `ipv4_addresses` AS A, `ports` AS I WHERE A.ipv4_address = ? AND I.port_id = A.port_id', [$host]); |
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22 | } |
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23 | break; |
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24 | |||
25 | case 'os': |
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26 | $dev_cache[$host]['os'] = dbFetchCell('SELECT `os` FROM devices WHERE `device_id` = ?', [get_cache($host, 'device_id')]); |
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27 | break; |
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28 | |||
29 | case 'version': |
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30 | $dev_cache[$host]['version'] = dbFetchCell('SELECT `version` FROM devices WHERE `device_id`= ?', [get_cache($host, 'device_id')]); |
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31 | break; |
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32 | |||
33 | case 'hostname': |
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34 | $dev_cache[$host]['hostname'] = dbFetchCell('SELECT `hostname` FROM devices WHERE `device_id` = ?', [get_cache($host, 'device_id')]); |
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35 | break; |
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36 | |||
37 | default: |
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38 | return null; |
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39 | }//end switch |
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40 | }//end if |
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41 | |||
42 | return $dev_cache[$host][$value]; |
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43 | }//end get_cache() |
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44 | |||
45 | function process_syslog($entry, $update) |
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46 | { |
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47 | global $dev_cache; |
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48 | |||
49 | foreach (Config::get('syslog_filter') as $bi) { |
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50 | if (strpos($entry['msg'], $bi) !== false) { |
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51 | return $entry; |
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52 | } |
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53 | } |
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54 | |||
55 | $entry['host'] = preg_replace('/^::ffff:/', '', $entry['host']); |
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56 | $syslog_xlate = Config::get('syslog_xlate'); |
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57 | if (! empty($syslog_xlate[$entry['host']])) { |
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58 | $entry['host'] = $syslog_xlate[$entry['host']]; |
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59 | } |
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60 | $entry['device_id'] = get_cache($entry['host'], 'device_id'); |
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61 | if ($entry['device_id']) { |
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62 | $os = get_cache($entry['host'], 'os'); |
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63 | $hostname = get_cache($entry['host'], 'hostname'); |
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64 | |||
65 | if (Config::get('enable_syslog_hooks') && is_array(Config::getOsSetting($os, 'syslog_hook'))) { |
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66 | foreach (Config::getOsSetting($os, 'syslog_hook') as $k => $v) { |
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67 | $syslogprogmsg = $entry['program'] . ': ' . $entry['msg']; |
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68 | if ((isset($v['script'])) && (isset($v['regex'])) && ((preg_match($v['regex'], $syslogprogmsg)))) { |
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69 | shell_exec(escapeshellcmd($v['script']) . ' ' . escapeshellarg($hostname) . ' ' . escapeshellarg($os) . ' ' . escapeshellarg($syslogprogmsg) . ' >/dev/null 2>&1 &'); |
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70 | } |
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71 | } |
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72 | } |
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73 | |||
74 | if (in_array($os, ['ios', 'iosxe', 'catos'])) { |
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75 | // multipart message |
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76 | if (strpos($entry['msg'], ':') !== false) { |
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77 | $matches = []; |
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78 | $timestamp_prefix = '([\*\.]?[A-Z][a-z]{2} \d\d? \d\d:\d\d:\d\d(.\d\d\d)?( [A-Z]{3})?: )?'; |
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79 | $program_match = '(?<program>%?[A-Za-z\d\-_]+(:[A-Z]* %[A-Z\d\-_]+)?)'; |
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80 | $message_match = '(?<msg>.*)'; |
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81 | if (preg_match('/^' . $timestamp_prefix . $program_match . ': ?' . $message_match . '/', $entry['msg'], $matches)) { |
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82 | $entry['program'] = $matches['program']; |
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83 | $entry['msg'] = $matches['msg']; |
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84 | } |
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85 | unset($matches); |
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86 | } else { |
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87 | // if this looks like a program (no groups of 2 or more lowercase letters), move it to program |
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88 | if (! preg_match('/[(a-z)]{2,}/', $entry['msg'])) { |
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89 | $entry['program'] = $entry['msg']; |
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90 | unset($entry['msg']); |
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91 | } |
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92 | } |
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93 | } elseif ($os == 'linux' and get_cache($entry['host'], 'version') == 'Point') { |
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94 | // Cisco WAP200 and similar |
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95 | $matches = []; |
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96 | if (preg_match('#Log: \[(?P<program>.*)\] - (?P<msg>.*)#', $entry['msg'], $matches)) { |
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97 | $entry['msg'] = $matches['msg']; |
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98 | $entry['program'] = $matches['program']; |
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99 | } |
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100 | |||
101 | unset($matches); |
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102 | } elseif ($os == 'linux') { |
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103 | $matches = []; |
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104 | // pam_krb5(sshd:auth): authentication failure; logname=root uid=0 euid=0 tty=ssh ruser= rhost=123.213.132.231 |
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105 | // pam_krb5[sshd:auth]: authentication failure; logname=root uid=0 euid=0 tty=ssh ruser= rhost=123.213.132.231 |
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106 | if (empty($entry['program']) and preg_match('#^(?P<program>([^(:]+\([^)]+\)|[^\[:]+\[[^\]]+\])) ?: ?(?P<msg>.*)$#', $entry['msg'], $matches)) { |
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107 | $entry['msg'] = $matches['msg']; |
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108 | $entry['program'] = $matches['program']; |
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109 | } elseif (empty($entry['program']) and ! empty($entry['facility'])) { |
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110 | // SYSLOG CONNECTION BROKEN; FD='6', SERVER='AF_INET(123.213.132.231:514)', time_reopen='60' |
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111 | // pam_krb5: authentication failure; logname=root uid=0 euid=0 tty=ssh ruser= rhost=123.213.132.231 |
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112 | // Disabled because broke this: |
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113 | // diskio.c: don't know how to handle 10 request |
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114 | // elseif($pos = strpos($entry['msg'], ';') or $pos = strpos($entry['msg'], ':')) { |
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115 | // $entry['program'] = substr($entry['msg'], 0, $pos); |
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116 | // $entry['msg'] = substr($entry['msg'], $pos+1); |
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117 | // } |
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118 | // fallback, better than nothing... |
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119 | $entry['program'] = $entry['facility']; |
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120 | } |
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121 | |||
122 | unset($matches); |
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123 | } elseif ($os == 'procurve') { |
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124 | $matches = []; |
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125 | if (preg_match('/^(?P<program>[A-Za-z]+): {2}(?P<msg>.*)/', $entry['msg'], $matches)) { |
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126 | $entry['msg'] = $matches['msg'] . ' [' . $entry['program'] . ']'; |
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127 | $entry['program'] = $matches['program']; |
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128 | } |
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129 | unset($matches); |
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130 | } elseif ($os == 'zywall') { |
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131 | // Zwwall sends messages without all the fields, so the offset is wrong |
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132 | $msg = preg_replace('/" /', '";', stripslashes($entry['program'] . ':' . $entry['msg'])); |
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133 | $msg = str_getcsv($msg, ';'); |
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134 | $entry['program'] = null; |
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135 | foreach ($msg as $param) { |
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136 | [$var, $val] = explode('=', $param); |
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137 | if ($var == 'cat') { |
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138 | $entry['program'] = str_replace('"', '', $val); |
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139 | } |
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140 | } |
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141 | $entry['msg'] = join(' ', $msg); |
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142 | }//end if |
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143 | |||
144 | if (! isset($entry['program'])) { |
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145 | $entry['program'] = $entry['msg']; |
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146 | unset($entry['msg']); |
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147 | } |
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148 | |||
149 | $entry['program'] = strtoupper($entry['program']); |
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150 | $entry = array_map('trim', $entry); |
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151 | |||
152 | if ($update) { |
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153 | dbInsert( |
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154 | [ |
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155 | 'device_id' => $entry['device_id'], |
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156 | 'program' => $entry['program'], |
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157 | 'facility' => $entry['facility'], |
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158 | 'priority' => $entry['priority'], |
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159 | 'level' => $entry['level'], |
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160 | 'tag' => $entry['tag'], |
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161 | 'msg' => $entry['msg'], |
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162 | 'timestamp' => $entry['timestamp'], |
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163 | ], |
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164 | 'syslog' |
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165 | ); |
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166 | } |
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167 | |||
168 | unset($os); |
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169 | }//end if |
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170 | |||
171 | return $entry; |
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172 | }//end process_syslog() |
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173 |
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: