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115 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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5 | * Copyright 2019 Daniel Marschall, ViaThinkSoft |
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6 | * |
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7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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8 | * you may not use this file except in compliance with the License. |
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9 | * You may obtain a copy of the License at |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | */ |
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19 | |||
20 | class OIDplusLogger { |
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21 | |||
188 | daniel-mar | 22 | private static function split_maskcodes($maskcodes) { |
288 | daniel-mar | 23 | // This function splits a mask code containing multiple components |
24 | // (delimited by '+' or '/') in single components |
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25 | // It takes care that '+' and '/' inside brackets won't be used to split the codes |
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26 | // Also, brackets can be escaped. |
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27 | // The severity block (optional, must be standing in front of a component) |
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28 | // is handled too. Inside the severity block, you may only use '/' to split components. |
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29 | // The severity block will be implicitly repeated from the previous components if a component |
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30 | // does not feature one. |
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31 | // |
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32 | // "[S]AAA(BBB)+CCC(DDD)" ==> array( |
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33 | // array(array("S"),"AAA(BBB)"), |
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34 | // array(array("S"),"CCC(DDD)") |
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35 | // ) |
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36 | // "[S]AAA(B+BB)+CCC(DDD)" ==> array( |
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37 | // array(array("S"),"AAA(B+BB)"), |
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38 | // array(array("S"),"CCC(DDD)") |
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39 | // ) |
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40 | // "[S]AAA(B\)BB)+CCC(DDD)" ==> array( |
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41 | // array(array("S"),"AAA(B\)BB)"), |
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42 | // array(array("S"),"CCC(DDD)") |
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43 | // ) |
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289 | daniel-mar | 44 | |
188 | daniel-mar | 45 | $out = array(); |
288 | daniel-mar | 46 | $sevs = array(); // Note: The severity block will repeat for the next components if not changed explicitly |
289 | daniel-mar | 47 | |
188 | daniel-mar | 48 | $code = ''; |
288 | daniel-mar | 49 | $sev = ''; |
188 | daniel-mar | 50 | $bracket_level = 0; |
288 | daniel-mar | 51 | $is_escaping = false; |
52 | $inside_severity_block = false; |
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188 | daniel-mar | 53 | for ($i=0; $i<strlen($maskcodes); $i++) { |
54 | $char = $maskcodes[$i]; |
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289 | daniel-mar | 55 | |
288 | daniel-mar | 56 | if ($inside_severity_block) { |
57 | // Severity block (optional) |
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58 | // e.g. [?WARN/!OK] ==> $sevs = array("?WARN", "!OK") |
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59 | if ($char == '\\') { |
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60 | if ($is_escaping) { |
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61 | $is_escaping = false; |
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62 | $sev .= $char; |
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63 | } else { |
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64 | $is_escaping = true; |
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65 | } |
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66 | } |
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67 | else if ($char == '[') { |
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68 | if ($is_escaping) { |
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69 | $is_escaping = false; |
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70 | } else { |
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71 | $bracket_level++; |
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72 | } |
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73 | $sev .= $char; |
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74 | } |
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75 | else if ($char == ']') { |
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76 | if ($is_escaping) { |
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77 | $is_escaping = false; |
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78 | $sev .= $char; |
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79 | } else { |
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80 | $bracket_level--; |
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81 | if ($bracket_level < 0) return false; |
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82 | if ($bracket_level == 0) { |
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83 | $inside_severity_block = false; |
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84 | if ($sev != '') $sevs[] = $sev; |
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85 | $sev = ''; |
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86 | } else { |
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87 | $sev .= $char; |
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88 | } |
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89 | } |
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90 | } |
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91 | else if ((($char == '/')) && ($bracket_level == 1)) { |
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92 | if ($is_escaping) { |
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93 | $is_escaping = false; |
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94 | $sev .= $char; |
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95 | } else { |
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96 | if ($sev != '') $sevs[] = $sev; |
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97 | $sev = ''; |
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98 | } |
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99 | } else { |
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100 | if ($is_escaping) { |
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101 | // This would actually be an error, because we cannot escape this |
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102 | $is_escaping = false; |
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103 | $sev .= '\\' . $char; |
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104 | } else { |
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105 | $sev .= $char; |
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106 | } |
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107 | } |
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188 | daniel-mar | 108 | } else { |
288 | daniel-mar | 109 | // Normal data (after the severity block) |
110 | if (($char == '[') && ($code == '')) { |
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111 | $inside_severity_block = true; |
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112 | $bracket_level++; |
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113 | $sevs = array(); |
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114 | } |
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115 | else if ($char == '\\') { |
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116 | if ($is_escaping) { |
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117 | $is_escaping = false; |
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118 | $code .= $char; |
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119 | } else { |
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120 | $is_escaping = true; |
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121 | } |
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122 | } |
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123 | else if ($char == '(') { |
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124 | if ($is_escaping) { |
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125 | $is_escaping = false; |
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126 | } else { |
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127 | $bracket_level++; |
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128 | } |
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129 | $code .= $char; |
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130 | } |
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131 | else if ($char == ')') { |
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132 | if ($is_escaping) { |
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133 | $is_escaping = false; |
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134 | } else { |
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135 | $bracket_level--; |
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136 | if ($bracket_level < 0) return false; |
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137 | } |
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138 | $code .= $char; |
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139 | } |
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140 | else if ((($char == '+') || ($char == '/')) && ($bracket_level == 0)) { |
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141 | if ($is_escaping) { |
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142 | $is_escaping = false; |
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143 | $code .= $char; |
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144 | } else { |
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145 | if ($code != '') $out[] = array($sevs,$code); |
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146 | $code = ''; |
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147 | } |
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148 | } else { |
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149 | if ($is_escaping) { |
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150 | // This would actually be an error, because we cannot escape this |
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151 | $is_escaping = false; |
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152 | $code .= '\\' . $char; |
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153 | } else { |
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154 | $code .= $char; |
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155 | } |
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156 | } |
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188 | daniel-mar | 157 | } |
158 | } |
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288 | daniel-mar | 159 | if ($code != '') $out[] = array($sevs,$code); |
160 | if ($inside_severity_block) return false; |
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188 | daniel-mar | 161 | |
162 | return $out; |
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163 | } |
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164 | |||
263 | daniel-mar | 165 | public static function log($maskcodes, $event) { |
289 | daniel-mar | 166 | $loggerPlugins = OIDplus::getLoggerPlugins(); |
167 | if (count($loggerPlugins) == 0) return false; |
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168 | |||
288 | daniel-mar | 169 | // What is a mask code? |
170 | // A mask code gives information about the log event: |
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171 | // 1. The severity (info, warning, error) |
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172 | // 2. In which logbook(s) the event shall be placed |
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173 | // Example: |
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174 | // The event would be: |
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175 | // "Person 'X' moves from house 'A' to house 'B'" |
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176 | // This event would affect the person X and the two houses, |
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177 | // so, instead of logging into 3 logbooks separately, |
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178 | // you would create a mask code that tells the system |
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179 | // to put the message into the logbooks of person X, |
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180 | // house A and house B. |
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115 | daniel-mar | 181 | |
182 | $users = array(); |
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183 | $objects = array(); |
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184 | |||
288 | daniel-mar | 185 | // A mask code with multiple components is split into single codes |
186 | // using '+' or '/', e.g. "OID(x)+RA(x)" would be split to "OID(x)" and "RA(x)" |
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187 | // which would result in the message being placed in the logbook of OID x, |
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188 | // and the logbook of the RA owning OID x. |
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188 | daniel-mar | 189 | $maskcodes_ary = self::split_maskcodes($maskcodes); |
190 | if ($maskcodes_ary === false) { |
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360 | daniel-mar | 191 | throw new OIDplusException(_L('Invalid maskcode "%1" (failed to split)',$maskcodes)); |
188 | daniel-mar | 192 | } |
288 | daniel-mar | 193 | foreach ($maskcodes_ary as list($sevs,$maskcode)) { |
194 | // At the beginning of each mask code, you can define a severity. |
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195 | // If you have a mask code with multiple components, you don't have to place the |
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196 | // severity for each component. You can just leave it at the beginning. |
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197 | // e.g. "[WARN]OID(x)+RA(x)" is equal to "[WARN]OID(x)+[WARN]RA(x)" |
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198 | // You can also put different severities for the components: |
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199 | // e.g. "[INFO]OID(x)+[WARN]RA(x)" would be a info for the OID, but a warning for the RA. |
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200 | // If you want to make the severity dependent on wheather the user is logged in or not, |
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201 | // prepend "?" or "!" and use '/' as delimiter |
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202 | // Example: "[?WARN/!OK]RA(x)" means: If RA is not logged in, it is a warning; if it is logged in, it is an success |
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203 | $severity = 0; // default severity = none |
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289 | daniel-mar | 204 | $severity_online = 0; |
288 | daniel-mar | 205 | foreach ($sevs as $sev) { |
206 | switch (strtoupper($sev)) { |
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207 | // [OK] = Success |
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208 | // Numeric value: 1 |
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209 | // Rule of thumb: YOU have done something and it was successful |
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210 | case '?OK': |
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211 | $severity_online = 1; |
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212 | break; |
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213 | case '!OK': |
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214 | case 'OK': |
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215 | $severity = 1; |
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216 | break; |
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217 | // [INFO] = Informational |
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218 | // Numeric value: 2 |
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219 | // Rule of thumb: Someone else has done something (that affects you) and it was successful |
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220 | case '?INFO': |
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221 | $severity_online = 2; |
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222 | break; |
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223 | case '!INFO': |
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224 | case 'INFO': |
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225 | $severity = 2; |
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226 | break; |
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227 | // [WARN] = Warning |
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228 | // Numeric value: 3 |
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229 | // Rule of thumb: Something happened (probably someone did something) and it affects you |
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230 | case '?WARN': |
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231 | $severity_online = 3; |
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232 | break; |
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233 | case '!WARN': |
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234 | case 'WARN': |
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235 | $severity = 3; |
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236 | break; |
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237 | // [ERR] = Error |
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238 | // Numeric value: 4 |
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239 | // Rule of thumb: Something failed (probably someone did something) and it affects you |
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240 | case '?ERR': |
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241 | $severity_online = 4; |
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242 | break; |
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243 | case '!ERR': |
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244 | case 'ERR': |
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245 | $severity = 4; |
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246 | break; |
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247 | // [CRIT] = Critical |
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248 | // Numeric value: 5 |
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249 | // Rule of thumb: Something happened (probably someone did something) which is not an error, |
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250 | // but some critical situation (e.g. hardware failure), and it affects you |
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251 | case '?CRIT': |
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252 | $severity_online = 5; |
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253 | break; |
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254 | case '!CRIT': |
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255 | case 'CRIT': |
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256 | $severity = 5; |
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257 | break; |
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258 | default: |
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360 | daniel-mar | 259 | throw new OIDplusException(_L('Invalid maskcode "%1" (Unknown severity "%2")',$maskcodes,$sev)); |
288 | daniel-mar | 260 | } |
261 | } |
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289 | daniel-mar | 262 | |
115 | daniel-mar | 263 | // OID(x) Save log entry into the logbook of: Object "x" |
419 | daniel-mar | 264 | $m = array(); |
115 | daniel-mar | 265 | if (preg_match('@^OID\((.+)\)$@ismU', $maskcode, $m)) { |
266 | $object_id = $m[1]; |
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288 | daniel-mar | 267 | $objects[] = array($severity, $object_id); |
360 | daniel-mar | 268 | if ($object_id == '') throw new OIDplusException(_L('OID logger mask requires OID')); |
115 | daniel-mar | 269 | } |
270 | |||
288 | daniel-mar | 271 | // SUPOID(x) Save log entry into the logbook of: Parent of object "x" |
272 | else if (preg_match('@^SUPOID\((.+)\)$@ismU', $maskcode, $m)) { |
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273 | $object_id = $m[1]; |
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360 | daniel-mar | 274 | if ($object_id == '') throw new OIDplusException(_L('SUPOID logger mask requires OID')); |
288 | daniel-mar | 275 | $obj = OIDplusObject::parse($object_id); |
276 | if ($obj) { |
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419 | daniel-mar | 277 | if ($objParent = $obj->getParent()) { |
278 | $parent = $objParent->nodeId(); |
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279 | $objects[] = array($severity, $parent); |
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280 | } else { |
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281 | //throw new OIDplusException(_L('%1 has no parent',$object_id)); |
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282 | } |
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288 | daniel-mar | 283 | } else { |
360 | daniel-mar | 284 | throw new OIDplusException(_L('SUPOID logger mask: Invalid object %1',$object_id)); |
288 | daniel-mar | 285 | } |
286 | } |
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287 | |||
115 | daniel-mar | 288 | // OIDRA(x)? Save log entry into the logbook of: Logged in RA of object "x" |
288 | daniel-mar | 289 | // Remove or replace "?" by "!" if the entity does not need to be logged in |
115 | daniel-mar | 290 | else if (preg_match('@^OIDRA\((.+)\)([\?\!])$@ismU', $maskcode, $m)) { |
291 | $object_id = $m[1]; |
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116 | daniel-mar | 292 | $ra_need_login = $m[2] == '?'; |
360 | daniel-mar | 293 | if ($object_id == '') throw new OIDplusException(_L('OIDRA logger mask requires OID')); |
115 | daniel-mar | 294 | $obj = OIDplusObject::parse($object_id); |
116 | daniel-mar | 295 | if ($obj) { |
296 | if ($ra_need_login) { |
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297 | foreach (OIDplus::authUtils()->loggedInRaList() as $ra) { |
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288 | daniel-mar | 298 | if ($obj->userHasWriteRights($ra)) $users[] = array($severity_online, $ra->raEmail()); |
116 | daniel-mar | 299 | } |
300 | } else { |
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288 | daniel-mar | 301 | // $users[] = array($severity, $obj->getRa()->raEmail()); |
116 | daniel-mar | 302 | foreach (OIDplusRA::getAllRAs() as $ra) { |
288 | daniel-mar | 303 | if ($obj->userHasWriteRights($ra)) $users[] = array($severity, $ra->raEmail()); |
116 | daniel-mar | 304 | } |
115 | daniel-mar | 305 | } |
288 | daniel-mar | 306 | } else { |
360 | daniel-mar | 307 | throw new OIDplusException(_L('OIDRA logger mask: Invalid object "%1"',$object_id)); |
115 | daniel-mar | 308 | } |
309 | } |
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310 | |||
311 | // SUPOIDRA(x)? Save log entry into the logbook of: Logged in RA that owns the superior object of "x" |
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288 | daniel-mar | 312 | // Remove or replace "?" by "!" if the entity does not need to be logged in |
115 | daniel-mar | 313 | else if (preg_match('@^SUPOIDRA\((.+)\)([\?\!])$@ismU', $maskcode, $m)) { |
314 | $object_id = $m[1]; |
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116 | daniel-mar | 315 | $ra_need_login = $m[2] == '?'; |
360 | daniel-mar | 316 | if ($object_id == '') throw new OIDplusException(_L('SUPOIDRA logger mask requires OID')); |
115 | daniel-mar | 317 | $obj = OIDplusObject::parse($object_id); |
116 | daniel-mar | 318 | if ($obj) { |
319 | if ($ra_need_login) { |
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320 | foreach (OIDplus::authUtils()->loggedInRaList() as $ra) { |
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288 | daniel-mar | 321 | if ($obj->userHasParentalWriteRights($ra)) $users[] = array($severity_online, $ra->raEmail()); |
116 | daniel-mar | 322 | } |
323 | } else { |
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419 | daniel-mar | 324 | if ($objParent = $obj->getParent()) { |
325 | // $users[] = array($severity, $objParent->getRa()->raEmail()); |
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326 | foreach (OIDplusRA::getAllRAs() as $ra) { |
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327 | if ($obj->userHasParentalWriteRights($ra)) $users[] = array($severity, $ra->raEmail()); |
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328 | } |
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329 | } else { |
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330 | //throw new OIDplusException(_L('%1 has no parent, therefore also no parent RA',$object_id)); |
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116 | daniel-mar | 331 | } |
115 | daniel-mar | 332 | } |
288 | daniel-mar | 333 | } else { |
360 | daniel-mar | 334 | throw new OIDplusException(_L('SUPOIDRA logger mask: Invalid object "%1"',$object_id)); |
115 | daniel-mar | 335 | } |
336 | } |
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337 | |||
338 | // RA(x)? Save log entry into the logbook of: Logged in RA "x" |
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288 | daniel-mar | 339 | // Remove or replace "?" by "!" if the entity does not need to be logged in |
340 | else if (preg_match('@^RA\((.*)\)([\?\!])$@ismU', $maskcode, $m)) { |
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115 | daniel-mar | 341 | $ra_email = $m[1]; |
116 | daniel-mar | 342 | $ra_need_login = $m[2] == '?'; |
288 | daniel-mar | 343 | if (!empty($ra_email)) { |
344 | if ($ra_need_login && OIDplus::authUtils()->isRaLoggedIn($ra_email)) { |
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345 | $users[] = array($severity_online, $ra_email); |
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346 | } else if (!$ra_need_login) { |
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347 | $users[] = array($severity, $ra_email); |
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348 | } |
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115 | daniel-mar | 349 | } |
350 | } |
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351 | |||
352 | // A? Save log entry into the logbook of: A logged in admin |
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288 | daniel-mar | 353 | // Remove or replace "?" by "!" if the entity does not need to be logged in |
115 | daniel-mar | 354 | else if (preg_match('@^A([\?\!])$@ismU', $maskcode, $m)) { |
116 | daniel-mar | 355 | $admin_need_login = $m[1] == '?'; |
115 | daniel-mar | 356 | if ($admin_need_login && OIDplus::authUtils()->isAdminLoggedIn()) { |
288 | daniel-mar | 357 | $users[] = array($severity_online, 'admin'); |
115 | daniel-mar | 358 | } else if (!$admin_need_login) { |
288 | daniel-mar | 359 | $users[] = array($severity, 'admin'); |
115 | daniel-mar | 360 | } |
361 | } |
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362 | |||
363 | // Unexpected |
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364 | else { |
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360 | daniel-mar | 365 | throw new OIDplusException(_L('Unexpected logger component "%1" in mask code "%2"',$maskcode,$maskcodes)); |
115 | daniel-mar | 366 | } |
116 | daniel-mar | 367 | } |
115 | daniel-mar | 368 | |
117 | daniel-mar | 369 | // Now write the log message |
370 | |||
289 | daniel-mar | 371 | $result = false; |
117 | daniel-mar | 372 | |
289 | daniel-mar | 373 | foreach ($loggerPlugins as $plugin) { |
374 | $reason = ''; |
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375 | if ($plugin->available($reason)) { |
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376 | $result |= $plugin->log($event, $users, $objects); |
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377 | } |
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117 | daniel-mar | 378 | } |
379 | |||
289 | daniel-mar | 380 | return $result; |
117 | daniel-mar | 381 | |
115 | daniel-mar | 382 | } |
360 | daniel-mar | 383 | } |