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2 | 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 | abstract class OIDplusObject { |
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21 | public static $registeredObjectTypes = array(); |
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22 | |||
23 | public static function parse($node_id) { // please overwrite this function! |
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24 | // TODO: in case we are not calling this class directly, check if function is overwritten and throw exception otherwise |
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25 | foreach (self::$registeredObjectTypes as $ot) { |
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26 | if ($obj = $ot::parse($node_id)) return $obj; |
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27 | } |
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28 | return null; |
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29 | } |
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30 | |||
31 | public abstract static function objectTypeTitle(); |
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32 | |||
33 | public abstract static function objectTypeTitleShort(); |
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34 | |||
35 | public abstract static function ns(); |
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36 | |||
37 | public abstract static function root(); |
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38 | |||
39 | public abstract function isRoot(); |
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40 | |||
41 | public abstract function nodeId(); |
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42 | |||
43 | public abstract function addString($str); |
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44 | |||
45 | public abstract function crudShowId(OIDplusObject $parent); |
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46 | |||
47 | public abstract function crudInsertPrefix(); |
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48 | |||
49 | public abstract function jsTreeNodeName(OIDplusObject $parent = null); |
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50 | |||
51 | public abstract function defaultTitle(); |
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52 | |||
16 | daniel-mar | 53 | public abstract function isLeafNode(); |
54 | |||
2 | daniel-mar | 55 | public abstract function getContentPage(&$title, &$content); |
56 | |||
27 | daniel-mar | 57 | public static function getRaRoots($ra_email=null) { |
58 | $out = array(); |
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59 | if (is_null($ra_email)) { |
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60 | $res = OIDplus::db()->query("select oChild.id as id, oChild.ra_email as child_mail, oParent.ra_email as parent_mail from ".OIDPLUS_TABLENAME_PREFIX."objects as oChild ". |
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61 | "left join ".OIDPLUS_TABLENAME_PREFIX."objects as oParent on oChild.parent = oParent.id ". |
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62 | "order by ".OIDplus::db()->natOrder('oChild.id')); |
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63 | while ($row = OIDplus::db()->fetch_array($res)) { |
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64 | if (!OIDplus::authUtils()::isRaLoggedIn($row['parent_mail']) && OIDplus::authUtils()::isRaLoggedIn($row['child_mail'])) { |
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65 | $out[] = self::parse($row['id']); |
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66 | } |
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2 | daniel-mar | 67 | } |
68 | } else { |
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27 | daniel-mar | 69 | $res = OIDplus::db()->query("select oChild.id as id from ".OIDPLUS_TABLENAME_PREFIX."objects as oChild ". |
70 | "left join ".OIDPLUS_TABLENAME_PREFIX."objects as oParent on oChild.parent = oParent.id ". |
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71 | "where ifnull(oParent.ra_email,'') <> '".OIDplus::db()->real_escape_string($ra_email)."' and oChild.ra_email = '".OIDplus::db()->real_escape_string($ra_email)."' ". |
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72 | "order by ".OIDplus::db()->natOrder('oChild.id')); |
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73 | while ($row = OIDplus::db()->fetch_array($res)) { |
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74 | $out[] = self::parse($row['id']); |
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2 | daniel-mar | 75 | } |
76 | } |
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77 | return $out; |
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78 | } |
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79 | |||
80 | private static function getAllNonConfidential_rec($parent=null, &$out) { |
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81 | if (is_null($parent)) { |
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82 | $roots = array(); |
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83 | foreach (self::$registeredObjectTypes as $ot) { |
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84 | $roots[] = "parent = '" . OIDplus::db()->real_escape_string($ot::root()) . "'"; |
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85 | } |
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86 | $roots = implode(' or ', $roots); |
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87 | } else { |
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88 | $roots = "parent = '" . OIDplus::db()->real_escape_string($parent) . "'"; |
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89 | } |
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90 | |||
91 | $res = OIDplus::db()->query("select id, confidential from ".OIDPLUS_TABLENAME_PREFIX."objects where $roots order by ".OIDplus::db()->natOrder('id')); |
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92 | |||
93 | while ($row = OIDplus::db()->fetch_array($res)) { |
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94 | if ($row['confidential'] == '1') { |
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95 | // do nothing |
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96 | } else { |
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97 | $out[] = $row['id']; |
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98 | self::getAllNonConfidential_rec($row['id'], $out); |
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99 | } |
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100 | } |
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101 | } |
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102 | |||
103 | public static function getAllNonConfidential() { |
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104 | $out = array(); |
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105 | self::getAllNonConfidential_rec(null, $out); |
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106 | return $out; |
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107 | } |
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108 | |||
109 | public function isConfidential() { |
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110 | $curid = $this->nodeId(); |
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111 | // Recursively search for the confidential flag in the parents |
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112 | while (OIDplus::db()->num_rows($res = OIDplus::db()->query("select parent, confidential from ".OIDPLUS_TABLENAME_PREFIX."objects where id = '".OIDplus::db()->real_escape_string($curid)."'")) > 0) { |
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113 | $row = OIDplus::db()->fetch_array($res); |
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114 | if ($row['confidential']) return true; |
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115 | $curid = $row['parent']; |
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116 | } |
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117 | |||
118 | return false; |
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119 | } |
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120 | |||
121 | public function isChildOf(OIDplusObject $obj) { |
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122 | $curid = $this->nodeId(); |
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123 | while (OIDplus::db()->num_rows($res = OIDplus::db()->query("select parent from ".OIDPLUS_TABLENAME_PREFIX."objects where id = '".OIDplus::db()->real_escape_string($curid)."'")) > 0) { |
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124 | $row = OIDplus::db()->fetch_array($res); |
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125 | if ($curid == $obj->nodeId()) return true; |
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126 | $curid = $row['parent']; |
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127 | } |
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128 | |||
129 | return false; |
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130 | } |
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131 | |||
132 | public function userHasReadRights($ra_email=null) { |
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133 | // Admin may do everything |
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134 | if (OIDplus::authUtils()::isAdminLoggedIn()) return true; |
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135 | |||
136 | // If it is not confidential, everybody can read/see it. |
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137 | if (!$this->isConfidential()) return true; |
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138 | |||
139 | // If we own the object, we may see it |
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140 | if (is_null($ra_email)) { |
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141 | if ($this->userHasWriteRights()) return true; |
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142 | } else { |
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143 | $res = OIDplus::db()->query("select ra_email from ".OIDPLUS_TABLENAME_PREFIX."objects where id = '".OIDplus::db()->real_escape_string($this->nodeId())."'"); |
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144 | $row = OIDplus::db()->fetch_array($res); |
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145 | if ($row['ra_email'] == $ra_email) return true; |
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146 | } |
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147 | |||
148 | // If someone has rights to an object below our confidential node, |
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149 | // we let him see the confidential node, |
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150 | // Otherwise he could not browse through to his own node. |
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151 | $roots = $this->getRaRoots($ra_email); |
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152 | foreach ($roots as $root) { |
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153 | if ($root->isChildOf($this)) return true; |
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154 | } |
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155 | |||
156 | return false; |
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157 | } |
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158 | |||
159 | public function getIcon($row=null) { |
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20 | daniel-mar | 160 | $namespace = $this->ns(); // must use $this, not self::, otherwise the virtual method will not be called |
2 | daniel-mar | 161 | |
162 | if (is_null($row)) { |
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163 | $res = OIDplus::db()->query("select ra_email from ".OIDPLUS_TABLENAME_PREFIX."objects where id = '".OIDplus::db()->real_escape_string($this->nodeId())."'"); |
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164 | $row = OIDplus::db()->fetch_array($res); |
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165 | } |
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166 | // TODO: have different icons for Leaf-Nodes |
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167 | if (OIDplus::authUtils()::isRaLoggedIn($row['ra_email'])) { |
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168 | $icon = 'plugins/objectTypes/'.$namespace.'/img/treeicon_own.png'; |
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169 | } else { |
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170 | $icon = 'plugins/objectTypes/'.$namespace.'/img/treeicon_general.png'; |
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171 | } |
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172 | if (!file_exists($icon)) $icon = null; // default icon (folder) |
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173 | return $icon; |
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174 | } |
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175 | |||
12 | daniel-mar | 176 | public static function exists($id) { |
177 | $res = OIDplus::db()->query("select * from ".OIDPLUS_TABLENAME_PREFIX."objects where id = '".OIDplus::db()->real_escape_string($id)."'"); |
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178 | return OIDplus::db()->num_rows($res) > 0; |
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179 | } |
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180 | |||
2 | daniel-mar | 181 | public function getParent() { |
182 | $res = OIDplus::db()->query("select parent from ".OIDPLUS_TABLENAME_PREFIX."objects where id = '".OIDplus::db()->real_escape_string($this->nodeId())."'"); |
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183 | $row = OIDplus::db()->fetch_array($res); |
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184 | $parent = $row['parent']; |
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20 | daniel-mar | 185 | $obj = OIDplusObject::parse($parent); |
186 | if ($obj) return $obj; |
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187 | |||
27 | daniel-mar | 188 | // If this OID does not exist, the SQL query "select parent from ..." does not work. So we try to find the next possible parent using one_up() |
20 | daniel-mar | 189 | $cur = $this->one_up(); |
190 | if (!$cur) return false; |
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191 | do { |
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192 | if ($fitting = self::findFitting($cur->nodeId())) return $fitting; |
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193 | |||
194 | $prev = $cur; |
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195 | $cur = $cur->one_up(); |
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196 | if (!$cur) return false; |
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197 | } while ($prev != $cur); |
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198 | |||
199 | return false; |
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2 | daniel-mar | 200 | } |
201 | |||
202 | public function getRaMail() { |
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203 | $res = OIDplus::db()->query("select ra_email from ".OIDPLUS_TABLENAME_PREFIX."objects where id = '".OIDplus::db()->real_escape_string($this->nodeId())."'"); |
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204 | $row = OIDplus::db()->fetch_array($res); |
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205 | return $row['ra_email']; |
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206 | } |
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207 | |||
208 | public function userHasParentalWriteRights($ra_email=null) { |
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209 | if (is_null($ra_email)) { |
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210 | if (OIDplus::authUtils()::isAdminLoggedIn()) return true; |
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211 | } |
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212 | |||
213 | $objParent = $this->getParent(); |
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214 | if (is_null($objParent)) return false; |
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215 | return $objParent->userHasWriteRights($ra_email); |
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216 | } |
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217 | |||
218 | public function userHasWriteRights($ra_email=null) { |
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219 | if (is_null($ra_email)) { |
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220 | if (OIDplus::authUtils()::isAdminLoggedIn()) return true; |
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221 | return OIDplus::authUtils()::isRaLoggedIn($this->getRaMail()); |
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222 | } else { |
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223 | return $this->getRaMail() == $ra_email; |
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224 | } |
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225 | } |
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12 | daniel-mar | 226 | |
227 | public function distance($to) { |
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228 | return null; // not implemented |
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229 | } |
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20 | daniel-mar | 230 | |
231 | public function equals($obj) { |
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232 | if (!is_object($obj)) $obj = OIDplusObject::parse($obj); |
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233 | $distance = $this->distance($obj); |
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234 | if (is_numeric($distance)) return $distance === 0; // if the distance function is implemented, use it |
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235 | |||
236 | return $this->nodeId() == $obj->nodeId(); // otherwise compare the node id case-sensitive |
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237 | } |
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238 | |||
239 | public static function findFitting($id) { |
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240 | $obj = OIDplusObject::parse($id); |
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241 | if (!$obj) throw new Exception("findFitting: Parse failed\n"); |
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242 | |||
243 | $res = OIDplus::db()->query("select * from ".OIDPLUS_TABLENAME_PREFIX."objects where id like '".OIDplus::db()->real_escape_string($obj->ns()).":%'"); |
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244 | while ($row = OIDplus::db()->fetch_object($res)) { |
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245 | $test = OIDplusObject::parse($row->id); |
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246 | if ($obj->equals($test)) return $test; |
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247 | } |
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248 | return false; |
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249 | } |
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250 | |||
251 | public function one_up() { |
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252 | return null; // not implemented |
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253 | } |
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2 | daniel-mar | 254 | } |