GEANT /
CAT
| Total Complexity | 100 |
| Total Lines | 631 |
| Duplicated Lines | 0 % |
| Changes | 5 | ||
| Bugs | 1 | Features | 0 |
Complex classes like InputValidation often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use InputValidation, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 30 | class InputValidation extends \core\common\Entity |
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| 31 | { |
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| 32 | |||
| 33 | /** |
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| 34 | * returns a simple HTML <p> element with basic explanations about what was |
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| 35 | * wrong with the input |
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| 36 | * |
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| 37 | * @param string $customtext explanation provided by the validator function |
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| 38 | * @return string |
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| 39 | */ |
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| 40 | private function inputValidationError($customtext) |
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| 46 | } |
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| 47 | |||
| 48 | /** |
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| 49 | * Is this a known Federation? Optionally, also check if the authenticated |
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| 50 | * user is a federation admin of that federation |
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| 51 | * @param mixed $input the ISO code of the federation |
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| 52 | * @param string|NULL $owner the authenticated username, optional |
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| 53 | * @return \core\Federation |
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| 54 | * @throws Exception |
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| 55 | */ |
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| 56 | public function existingFederation($input, $owner = NULL) |
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| 78 | } |
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| 79 | |||
| 80 | /** |
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| 81 | * Is this a known Federation? Optionally, also check if the authenticated |
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| 82 | * user is a federation admin of that federation |
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| 83 | * @param mixed $input the ISO code of the federation |
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| 84 | * @param string|NULL $owner the authenticated username, optional |
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| 85 | * @return array(\core\Federation, string) |
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| 86 | * @throws Exception |
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| 87 | */ |
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| 88 | public function existingFederationInt($input, $owner = NULL) |
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| 89 | { |
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| 90 | $cat = new \core\CAT(); // initialises Entity static members |
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| 91 | $fedIdentifiers = array_keys($cat->knownFederations); |
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| 92 | if (!in_array(strtoupper($input), $fedIdentifiers)) { |
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| 93 | throw new Exception($this->inputValidationError(sprintf("This %s does not exist!", \core\common\Entity::$nomenclature_fed))); |
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| 94 | } |
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| 95 | // totally circular, but this hopefully *finally* make Scrutinizer happier |
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| 96 | $correctIndex = array_search(strtoupper($input), $fedIdentifiers); |
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| 97 | $postFed = $fedIdentifiers[$correctIndex]; |
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| 98 | $temp = new \core\Federation($postFed); |
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| 99 | if ($owner === NULL) { |
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| 100 | return [$temp,'readonly']; |
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| 101 | } |
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| 102 | $user = new \core\User($owner); |
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| 103 | foreach ($temp->listFederationAdmins() as $oneowner) { |
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| 104 | if ($oneowner == $owner) { |
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| 105 | return [$temp, 'fullaccess']; |
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| 106 | } |
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| 107 | } |
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| 108 | if ($user->isSuperadmin()|| $user->isSupport()) { |
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| 109 | $this->loggerInstance->debug(4, "You are the superadmin/support\n"); |
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| 110 | return [$temp,'readonly']; |
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| 111 | } |
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| 112 | throw new Exception($this->inputValidationError(sprintf("User is not %s administrator!", \core\common\Entity::$nomenclature_fed))); |
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| 113 | } |
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| 114 | |||
| 115 | /** |
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| 116 | * Is this a known IdP? Optionally, also check if the authenticated |
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| 117 | * user is an admin of that IdP |
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| 118 | * It is a wrapper around existingIdPInt. |
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| 119 | * |
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| 120 | * @param mixed $input the numeric ID of the IdP in the system |
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| 121 | * @param string $owner the authenticated username, optional |
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| 122 | * @param \core\Federation $claimedFedBinding if set, cross-check that IdP belongs to specified federation (useful in admin API mode) |
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| 123 | * @return \core\IdP |
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| 124 | * @throws Exception |
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| 125 | */ |
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| 126 | public function existingIdP($input, $owner = NULL, $claimedFedBinding = NULL) |
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| 127 | { |
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| 128 | $clean = $this->integer($input); |
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| 129 | if ($clean === FALSE) { |
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| 130 | throw new Exception($this->inputValidationError("Value for IdP is not an integer!")); |
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| 131 | } |
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| 132 | |||
| 133 | $checkResult = $this->existingIdPInt($input, $owner, $claimedFedBinding); |
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| 134 | $this->loggerInstance->debug(5, $checkResult, "existingIdP:", "\n"); |
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| 135 | if ($checkResult[1] == 'fullaccess') { |
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| 136 | return $checkResult[0]; |
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| 137 | } |
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| 138 | if ($owner == NULL && $checkResult[1] == 'nouser') { |
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| 139 | return $checkResult[0]; |
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| 140 | } |
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| 141 | return false; |
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| 142 | } |
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| 143 | |||
| 144 | |||
| 145 | /** |
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| 146 | * Is this a known IdP? Optionally, also check if the authenticated |
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| 147 | * user is an admin of that IdP or a federation admin for the parent federation |
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| 148 | * federaton admins superadmin and support get read-only access, superadmins get readonly access as well |
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| 149 | * @param mixed $input the numeric ID of the IdP in the system |
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| 150 | * @param string $owner the authenticated username, optional |
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| 151 | * @param \core\Federation $claimedFedBinding if set, cross-check that IdP belongs to specified federation (useful in admin API mode) |
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| 152 | * @return array(\core\IdP, string) |
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| 153 | * @throws Exception |
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| 154 | */ |
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| 155 | public function existingIdPInt($input, $owner = NULL, $claimedFedBinding = NULL) |
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| 156 | { |
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| 157 | $clean = $this->integer($input); |
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| 158 | if ($clean === FALSE) { |
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| 159 | throw new Exception($this->inputValidationError("Value for IdP is not an integer!")); |
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| 160 | } |
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| 161 | $temp = new \core\IdP($input); // constructor throws an exception if NX, game over |
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| 162 | if ($owner !== NULL) { // check if the authenticated user is allowed to see this institution |
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| 163 | $user = new \core\User($owner); |
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| 164 | foreach ($temp->listOwners() as $oneowner) { |
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| 165 | if ($oneowner['ID'] == $owner) { |
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| 166 | return [$temp, 'fullaccess']; |
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| 167 | } |
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| 168 | } |
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| 169 | if ($user->isFederationAdmin($temp->federation)) { |
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| 170 | $this->loggerInstance->debug(4, "You are fed admin for this IdP\n"); |
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| 171 | return [$temp,'readonly']; |
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| 172 | } |
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| 173 | if ($user->isSuperadmin() || $user->isSupport()) { |
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| 174 | $this->loggerInstance->debug(4, "You are the superadmin/support\n"); |
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| 175 | return [$temp,'readonly']; |
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| 176 | } |
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| 177 | throw new Exception($this->inputValidationError("This IdP identifier is not accessible!")); |
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| 178 | } |
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| 179 | if ($claimedFedBinding !== NULL && strtoupper($temp->federation) != strtoupper($claimedFedBinding->tld)) { |
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| 180 | throw new Exception($this->inputValidationError("This IdP does not belong to the claimed federation!")); |
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| 181 | } |
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| 182 | return [$temp,'nouser']; |
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| 183 | } |
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| 184 | |||
| 185 | /** |
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| 186 | * Checks if the input refers to a known Profile. Optionally also takes an |
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| 187 | * IdP identifier and then checks if the Profile belongs to the referenced |
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| 188 | * IdP |
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| 189 | * |
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| 190 | * @param mixed $input the numeric ID of the Profile in the system |
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| 191 | * @param int|NULL $idpIdentifier the numeric ID of the IdP in the system, optional |
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| 192 | * @return \core\AbstractProfile |
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| 193 | * @throws Exception |
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| 194 | */ |
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| 195 | public function existingProfile($input, $idpIdentifier = NULL) |
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| 207 | } |
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| 208 | |||
| 209 | /** |
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| 210 | * Checks if the input refers to a known DeploymentManaged. Optionally also takes an |
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| 211 | * IdP identifier and then checks if the Profile belongs to the referenced |
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| 212 | * IdP |
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| 213 | * |
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| 214 | * @param mixed $input the numeric ID of the Deployment in the system |
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| 215 | * @param \core\IdP $idp the IdP |
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| 216 | * @return \core\DeploymentManaged |
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| 217 | * @throws Exception |
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| 218 | */ |
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| 219 | public function existingDeploymentManaged($input, $idp) |
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| 220 | { |
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| 221 | $clean = $this->integer($input); |
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| 222 | if ($clean === FALSE) { |
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| 223 | throw new Exception("Non-integer was passed to Profile validator!"); |
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| 224 | } |
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| 225 | $temp = new \core\DeploymentManaged($idp, $clean); // constructor throws an exception if NX, game over |
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| 226 | |||
| 227 | if ($temp->institution != $idp->identifier) { |
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| 228 | throw new Exception($this->inputValidationError("The profile does not belong to the IdP!")); |
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| 229 | } |
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| 230 | return $temp; |
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| 231 | } |
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| 232 | |||
| 233 | /** |
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| 234 | * Checks if this is a device known to the system |
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| 235 | * @param mixed $input the name of the device (index in the Devices.php array) |
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| 236 | * @return string returns the same string on success, throws an Exception on failure |
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| 237 | * @throws Exception |
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| 238 | */ |
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| 239 | public function existingDevice($input) |
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| 248 | } |
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| 249 | |||
| 250 | /** |
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| 251 | * Checks if the input was a valid string. |
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| 252 | * |
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| 253 | * @param mixed $input a string to be made SQL-safe |
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| 254 | * @param boolean $allowWhitespace whether some whitespace (e.g. newlines should be preserved (true) or redacted (false) |
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| 255 | * @return string the massaged string |
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| 256 | * @throws Exception |
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| 257 | */ |
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| 258 | public function string($input, $allowWhitespace = FALSE) |
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| 259 | { |
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| 260 | // always chop out invalid characters, and surrounding whitespace |
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| 261 | $retvalStep0 = iconv("UTF-8", "UTF-8//TRANSLIT", $input); |
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| 262 | if ($retvalStep0 === FALSE) { |
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| 263 | throw new Exception("iconv failure for string sanitisation. With TRANSLIT, this should never happen!"); |
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| 264 | } |
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| 265 | $retvalStep1 = trim($retvalStep0); |
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| 266 | // if some funny person wants to inject markup tags, remove them |
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| 267 | if ($retvalStep1 !== '') { |
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| 268 | $retval = htmlspecialchars(strip_tags($retvalStep1), ENT_NOQUOTES); |
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| 269 | if ($retval === '') { |
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| 270 | throw new Exception("filter_var failure for string sanitisation."); |
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| 271 | } |
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| 272 | } else { |
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| 273 | $retval = ''; |
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| 274 | } |
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| 275 | // unless explicitly wanted, take away intermediate disturbing whitespace |
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| 276 | // a simple "space" is NOT disturbing :-) |
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| 277 | if ($allowWhitespace === FALSE) { |
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| 278 | $afterWhitespace = preg_replace('/(\0|\r|\x0b|\t|\n)/', '', $retval); |
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| 279 | } else { |
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| 280 | // even if we allow whitespace, not pathological ones! |
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| 281 | $afterWhitespace = preg_replace('/(\0|\r|\x0b)/', '', $retval); |
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| 282 | } |
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| 283 | if (is_array($afterWhitespace)) { |
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| 284 | throw new Exception("This function has to be given a string and returns a string. preg_replace has generated an array instead!"); |
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| 285 | } |
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| 286 | return (string) $afterWhitespace; |
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| 287 | } |
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| 288 | |||
| 289 | /** |
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| 290 | * Is this an integer, or a string that represents an integer? |
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| 291 | * |
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| 292 | * @param mixed $input the raw input |
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| 293 | * @return boolean|int returns the input, or FALSE if it is not an integer-like value |
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| 294 | */ |
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| 295 | public function integer($input) |
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| 301 | } |
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| 302 | |||
| 303 | /** |
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| 304 | * Is this a string representing a potentially more than 64-Bit length integer? |
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| 305 | * |
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| 306 | * @param string $input the input data which is possibly a really large integer |
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| 307 | * @return boolean|string returns the input, or FALSE if it is not an integer-like string |
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| 308 | */ |
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| 309 | public function hugeInteger($input) |
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| 310 | { |
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| 311 | if (is_numeric($input)) { |
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| 312 | return $input; |
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| 313 | } |
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| 314 | return FALSE; |
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| 315 | } |
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| 316 | |||
| 317 | /** |
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| 318 | * Checks if the input is the hex representation of a Consortium OI (i.e. three |
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| 319 | * or five bytes) |
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| 320 | * |
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| 321 | * @param mixed $input the raw input |
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| 322 | * @return boolean|string returns the input, or FALSE on validation failure |
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| 323 | */ |
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| 324 | public function consortiumOI($input) |
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| 325 | { |
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| 326 | $shallow = $this->string($input); |
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| 327 | if (strlen($shallow) != 6 && strlen($shallow) != 10) { |
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| 328 | return FALSE; |
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| 329 | } |
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| 330 | if (!preg_match("/^[a-fA-F0-9]+$/", $shallow)) { |
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| 331 | return FALSE; |
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| 332 | } |
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| 333 | return $shallow; |
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| 334 | } |
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| 335 | |||
| 336 | /** |
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| 337 | * Is the input an NAI realm? Throws HTML error and returns FALSE if not. |
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| 338 | * |
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| 339 | * @param mixed $input the input to check |
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| 340 | * @return boolean|string returns the realm, or FALSE if it was malformed |
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| 341 | */ |
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| 342 | public function realm($input) |
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| 343 | { |
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| 344 | \core\common\Entity::intoThePotatoes(); |
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| 345 | if (strlen($input) == 0) { |
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| 346 | echo $this->inputValidationError(_("Realm is empty!")); |
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| 347 | \core\common\Entity::outOfThePotatoes(); |
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| 348 | return FALSE; |
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| 349 | } |
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| 350 | |||
| 351 | // basic string checks |
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| 352 | $check = $this->string($input); |
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| 353 | // list of things to check, and the error they produce |
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| 354 | $pregCheck = [ |
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| 355 | "/@/" => _("Realm contains an @ sign!"), |
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| 356 | "/^\./" => _("Realm begins with a . (dot)!"), |
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| 357 | "/\.$/" => _("Realm ends with a . (dot)!"), |
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| 358 | "/ /" => _("Realm contains spaces!"), |
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| 359 | ]; |
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| 360 | |||
| 361 | // bark on invalid constructs |
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| 362 | foreach ($pregCheck as $search => $error) { |
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| 363 | if (preg_match($search, $check) == 1) { |
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| 364 | echo $this->inputValidationError($error); |
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| 365 | \core\common\Entity::outOfThePotatoes(); |
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| 366 | return FALSE; |
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| 367 | } |
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| 368 | } |
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| 369 | |||
| 370 | if (preg_match("/\./", $check) == 0) { |
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| 371 | echo $this->inputValidationError(_("Realm does not contain at least one . (dot)!")); |
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| 372 | \core\common\Entity::outOfThePotatoes(); |
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| 373 | return FALSE; |
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| 374 | } |
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| 375 | |||
| 376 | // none of the special HTML entities should be here. In case someone wants |
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| 377 | // to mount a CSS attack by providing something that matches the realm constructs |
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| 378 | // below but has interesting stuff between, mangle the input so that these |
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| 379 | // characters do not do any harm. |
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| 380 | \core\common\Entity::outOfThePotatoes(); |
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| 381 | return htmlentities($check, ENT_QUOTES); |
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| 382 | } |
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| 383 | |||
| 384 | /** |
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| 385 | * could this be a valid username? |
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| 386 | * |
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| 387 | * Only checks correct form, not if the user actually exists in the system. |
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| 388 | * |
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| 389 | * @param mixed $input the username |
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| 390 | * @return string echoes back the input string, or throws an Exception if bogus |
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| 391 | * @throws Exception |
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| 392 | */ |
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| 393 | public function syntaxConformUser($input) |
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| 394 | { |
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| 395 | $retvalStep0 = iconv("UTF-8", "UTF-8//TRANSLIT", $input); |
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| 396 | if ($retvalStep0 === FALSE) { |
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| 397 | throw new Exception("iconv failure for string sanitisation. With TRANSLIT, this should never happen!"); |
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| 398 | } |
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| 399 | $retvalStep1 = trim($retvalStep0); |
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| 400 | |||
| 401 | $retval = preg_replace('/(\0|\r|\x0b|\t|\n)/', '', $retvalStep1); |
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| 402 | if ($retval != "" && !ctype_print($retval)) { |
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| 403 | throw new Exception($this->inputValidationError("The user identifier is not an ASCII string!")); |
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| 404 | } |
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| 405 | |||
| 406 | return $retval; |
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| 407 | } |
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| 408 | |||
| 409 | /** |
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| 410 | * could this be a valid token? |
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| 411 | * |
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| 412 | * Only checks correct form, not if the token actually exists in the system. |
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| 413 | * @param mixed $input the raw input |
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| 414 | * @return string echoes back the input string, or throws an Exception if bogus |
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| 415 | * @throws Exception |
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| 416 | */ |
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| 417 | public function token($input) |
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| 418 | { |
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| 419 | $retval = $input; |
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| 420 | if ($input != "" && preg_match('/[^0-9a-fA-F]/', $input) != 0) { |
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| 421 | throw new Exception($this->inputValidationError("Token is not a hexadecimal string!")); |
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| 422 | } |
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| 423 | return $retval; |
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| 424 | } |
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| 425 | |||
| 426 | /** |
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| 427 | * Is this be a valid coordinate vector on one axis? |
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| 428 | * |
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| 429 | * @param mixed $input a numeric value in range of a geo coordinate [-180;180] |
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| 430 | * @return string returns back the input if all is good; throws an Exception if out of bounds or not numeric |
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| 431 | * @throws Exception |
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| 432 | */ |
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| 433 | public function coordinate($input) |
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| 434 | { |
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| 435 | $oldlocale = setlocale(LC_NUMERIC, 0); |
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| 436 | setlocale(LC_NUMERIC, "en_GB"); |
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| 437 | if (!is_numeric($input)) { |
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| 438 | throw new Exception($this->inputValidationError("Coordinate is not a numeric value!")); |
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| 439 | } |
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| 440 | setlocale(LC_NUMERIC, $oldlocale); |
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| 441 | // lat and lon are always in the range of [-180;+180] |
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| 442 | if ($input < -180 || $input > 180) { |
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| 443 | throw new Exception($this->inputValidationError("Coordinate is out of bounds. Which planet are you from?")); |
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| 444 | } |
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| 445 | return $input; |
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| 446 | } |
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| 447 | |||
| 448 | /** |
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| 449 | * Is this a valid coordinate pair in JSON encoded representation? |
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| 450 | * |
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| 451 | * @param mixed $input the string to be checked: is this a serialised array with lat/lon keys in a valid number range? |
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| 452 | * @return string returns $input if checks have passed; throws an Exception if something's wrong |
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| 453 | * @throws Exception |
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| 454 | */ |
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| 455 | public function coordJsonEncoded($input) |
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| 456 | { |
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| 457 | $tentative = json_decode($input, true); |
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| 458 | if (is_array($tentative)) { |
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| 459 | if (isset($tentative['lon']) && isset($tentative['lat']) && $this->coordinate($tentative['lon']) && $this->coordinate($tentative['lat'])) { |
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| 460 | return $input; |
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| 461 | } |
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| 462 | } |
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| 463 | throw new Exception($this->inputValidationError("Wrong coordinate encoding (2.0 uses JSON, not serialize)!")); |
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| 464 | } |
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| 465 | |||
| 466 | /** |
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| 467 | * This checks the state of a HTML GET/POST "boolean". |
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| 468 | * |
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| 469 | * If not checked, no value is submitted at all; if checked, has the word "on". |
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| 470 | * Anything else is a big error. |
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| 471 | * |
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| 472 | * @param mixed $input the string to test |
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| 473 | * @return boolean TRUE if the input was "on". It is not possible in HTML to signal "off" |
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| 474 | * @throws Exception |
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| 475 | */ |
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| 476 | public function boolean($input) |
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| 477 | { |
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| 478 | if ($input != "on") { |
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| 479 | throw new Exception($this->inputValidationError("Unknown state of boolean option!")); |
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| 480 | } |
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| 481 | return TRUE; |
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| 482 | } |
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| 483 | |||
| 484 | /** |
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| 485 | * checks if we have the strings "IdP" "SP" or "IdPSP" |
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| 486 | * |
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| 487 | * @param string $partTypeRaw the string to be validated as participant type |
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| 488 | * @return string validated result |
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| 489 | * @throws Exception |
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| 490 | */ |
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| 491 | public function partType($partTypeRaw) |
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| 502 | } |
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| 503 | } |
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| 504 | |||
| 505 | const TABLEMAPPING = [ |
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| 506 | "IdP" => "institution_option", |
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| 507 | "Profile" => "profile_option", |
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| 508 | "FED" => "federation_option", |
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| 509 | ]; |
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| 510 | |||
| 511 | /** |
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| 512 | * Is this a valid database reference? Has the form <tablename>-<rowID> and there |
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| 513 | * needs to be actual data at that place |
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| 514 | * |
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| 515 | * @param string $input the reference to check |
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| 516 | * @return boolean|array the reference split up into "table" and "rowindex", or FALSE |
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| 517 | */ |
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| 518 | public function databaseReference($input) |
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| 529 | } |
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| 530 | |||
| 531 | /** |
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| 532 | * is this a valid hostname? |
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| 533 | * |
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| 534 | * @param mixed $input the raw input |
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| 535 | * @return boolean|string echoes the hostname, or FALSE if bogus |
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| 536 | */ |
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| 537 | public function hostname($input) |
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| 538 | { |
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| 539 | // is it a valid IP address (IPv4 or IPv6), or a hostname? |
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| 540 | if (filter_var($input, FILTER_VALIDATE_IP) || filter_var($input, FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME)) { |
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| 541 | // if it's a verified IP address or hostname then it does not contain |
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| 542 | // rubbish of course. But just to be sure, run htmlspecialchars around it |
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| 543 | return htmlspecialchars($input, ENT_QUOTES); |
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| 544 | } |
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| 545 | return FALSE; |
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| 546 | } |
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| 547 | |||
| 548 | /** |
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| 549 | * is this a valid email address? |
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| 550 | * |
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| 551 | * @param mixed $input the raw input |
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| 552 | * @return boolean|string echoes the mail address, or FALSE if bogus |
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| 553 | */ |
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| 554 | public function email($input) |
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| 562 | } |
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| 563 | |||
| 564 | /** |
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| 565 | * is this a well-formed SMS number? Light massaging - leading + will be removed |
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| 566 | * @param string $input the raw input |
||
| 567 | * @return boolean|string |
||
| 568 | */ |
||
| 569 | public function sms($input) |
||
| 570 | { |
||
| 571 | $number = str_replace(' ', '', str_replace(".", "", str_replace("+", "", $input))); |
||
| 572 | if (!is_numeric($number)) { |
||
| 573 | return FALSE; |
||
| 574 | } |
||
| 575 | return $number; |
||
| 576 | } |
||
| 577 | |||
| 578 | /** |
||
| 579 | * Is this is a language we support? If not, sanitise to our configured default language. |
||
| 580 | * |
||
| 581 | * @param mixed $input the candidate language identifier |
||
| 582 | * @return string |
||
| 583 | * @throws Exception |
||
| 584 | */ |
||
| 585 | public function supportedLanguage($input) |
||
| 597 | } |
||
| 598 | |||
| 599 | /** |
||
| 600 | * Makes sure we are not receiving a bogus option name. The called function throws |
||
| 601 | * an assertion if the name is not known. |
||
| 602 | * |
||
| 603 | * @param mixed $input the unvetted option name |
||
| 604 | * @return string |
||
| 605 | */ |
||
| 606 | public function optionName($input) |
||
| 610 | } |
||
| 611 | |||
| 612 | /** |
||
| 613 | * Checks to see if the input is a valid image of sorts |
||
| 614 | * |
||
| 615 | * @param mixed $binary blob that may or may not be a parseable image |
||
| 616 | * @return boolean |
||
| 617 | */ |
||
| 618 | public function image($binary) |
||
| 633 | } |
||
| 634 | |||
| 635 | /** |
||
| 636 | * searches for values in GET and POST, and filters the value according to |
||
| 637 | * which kind of data is expected |
||
| 638 | * |
||
| 639 | * @param string $varName name of the variable in GET/POST |
||
| 640 | * @param string $filter which type of filter to apply (safe_text / int) |
||
| 641 | * @return NULL|string|integer the returned value |
||
| 642 | */ |
||
| 643 | public function simpleInputFilter($varName, $filter) |
||
| 661 | } |
||
| 662 | |||
| 663 | } |
||
| 664 |
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The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g.
excluded_paths: ["lib/*"], you can move it to the dependency path list as follows:For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths