GEANT /
CAT
| Total Complexity | 90 |
| Total Lines | 590 |
| Duplicated Lines | 0 % |
| Changes | 2 | ||
| 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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| 41 | { |
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| 42 | \core\common\Entity::intoThePotatoes(); |
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| 43 | $retval = "<p>" . _("Input validation error: ") . $customtext . "</p>"; |
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| 44 | \core\common\Entity::outOfThePotatoes(); |
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| 45 | return $retval; |
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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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| 79 | } |
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| 80 | |||
| 81 | |||
| 82 | /** |
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| 83 | * Is this a known IdP? Optionally, also check if the authenticated |
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| 84 | * user is an admin of that IdP |
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| 85 | * It is a wrapper around existingIdPInt. |
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| 86 | * |
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| 87 | * @param mixed $input the numeric ID of the IdP in the system |
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| 88 | * @param string $owner the authenticated username, optional |
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| 89 | * @param \core\Federation $claimedFedBinding if set, cross-check that IdP belongs to specified federation (useful in admin API mode) |
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| 90 | * @return \core\IdP |
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| 91 | * @throws Exception |
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| 92 | */ |
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| 93 | public function existingIdP($input, $owner = NULL, $claimedFedBinding = NULL) |
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| 94 | { |
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| 95 | $clean = $this->integer($input); |
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| 96 | if ($clean === FALSE) { |
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| 97 | throw new Exception($this->inputValidationError("Value for IdP is not an integer!")); |
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| 98 | } |
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| 99 | |||
| 100 | $checkResult = $this->existingIdPInt($input, $owner, $claimedFedBinding); |
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| 101 | $this->loggerInstance->debug(4, $checkResult, "existingIdP:", "\n"); |
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| 102 | if ($checkResult[1] == 'fullaccess') { |
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| 103 | return $checkResult[0]; |
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| 104 | } |
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| 105 | if ($owner == NULL && $checkResult[1] == 'nouser') { |
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| 106 | return $checkResult[0]; |
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| 107 | } |
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| 108 | return false; |
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| 109 | } |
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| 110 | |||
| 111 | |||
| 112 | /** |
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| 113 | * Is this a known IdP? Optionally, also check if the authenticated |
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| 114 | * user is an admin of that IdP or a federation admin for the parent federation |
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| 115 | * federaton admins get read-only access |
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| 116 | * @param mixed $input the numeric ID of the IdP in the system |
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| 117 | * @param string $owner the authenticated username, optional |
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| 118 | * @param \core\Federation $claimedFedBinding if set, cross-check that IdP belongs to specified federation (useful in admin API mode) |
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| 119 | * @return \core\IdP |
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| 120 | * @throws Exception |
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| 121 | */ |
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| 122 | public function existingIdPInt($input, $owner = NULL, $claimedFedBinding = NULL) |
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| 123 | { |
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| 124 | $clean = $this->integer($input); |
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| 125 | if ($clean === FALSE) { |
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| 126 | throw new Exception($this->inputValidationError("Value for IdP is not an integer!")); |
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| 127 | } |
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| 128 | $temp = new \core\IdP($input); // constructor throws an exception if NX, game over |
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| 129 | if ($owner !== NULL) { // check if the authenticated user is allowed to see this institution |
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| 130 | $user = new \core\User($owner); |
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| 131 | foreach ($temp->listOwners() as $oneowner) { |
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| 132 | if ($oneowner['ID'] == $owner) { |
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| 133 | return [$temp, 'fullaccess']; |
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| 134 | } |
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| 135 | } |
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| 136 | if ($user->isFederationAdmin($temp->federation)) { |
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| 137 | $this->loggerInstance->debug(4, "You are fed admin for this IdP\n"); |
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| 138 | return [$temp,'readonly']; |
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| 139 | } |
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| 140 | throw new Exception($this->inputValidationError("This IdP identifier is not accessible!")); |
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| 141 | } |
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| 142 | if ($claimedFedBinding !== NULL && strtoupper($temp->federation) != strtoupper($claimedFedBinding->tld)) { |
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| 143 | throw new Exception($this->inputValidationError("This IdP does not belong to the claimed federation!")); |
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| 144 | } |
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| 145 | return [$temp,'nouser']; |
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| 146 | } |
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| 147 | |||
| 148 | /** |
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| 149 | * Checks if the input refers to a known Profile. Optionally also takes an |
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| 150 | * IdP identifier and then checks if the Profile belongs to the referenced |
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| 151 | * IdP |
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| 152 | * |
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| 153 | * @param mixed $input the numeric ID of the Profile in the system |
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| 154 | * @param int|NULL $idpIdentifier the numeric ID of the IdP in the system, optional |
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| 155 | * @return \core\AbstractProfile |
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| 156 | * @throws Exception |
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| 157 | */ |
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| 158 | public function existingProfile($input, $idpIdentifier = NULL) |
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| 159 | { |
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| 160 | $clean = $this->integer($input); |
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| 161 | if ($clean === FALSE) { |
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| 162 | throw new Exception("Non-integer was passed to Profile validator!"); |
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| 163 | } |
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| 164 | $temp = \core\ProfileFactory::instantiate($clean); // constructor throws an exception if NX, game over |
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| 165 | |||
| 166 | if ($idpIdentifier !== NULL && $temp->institution != $idpIdentifier) { |
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| 167 | throw new Exception($this->inputValidationError("The profile does not belong to the IdP!")); |
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| 168 | } |
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| 169 | return $temp; |
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| 170 | } |
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| 171 | |||
| 172 | /** |
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| 173 | * Checks if the input refers to a known DeploymentManaged. Optionally also takes an |
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| 174 | * IdP identifier and then checks if the Profile belongs to the referenced |
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| 175 | * IdP |
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| 176 | * |
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| 177 | * @param mixed $input the numeric ID of the Deployment in the system |
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| 178 | * @param \core\IdP $idp the IdP |
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| 179 | * @return \core\DeploymentManaged |
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| 180 | * @throws Exception |
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| 181 | */ |
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| 182 | public function existingDeploymentManaged($input, $idp) |
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| 183 | { |
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| 184 | $clean = $this->integer($input); |
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| 185 | if ($clean === FALSE) { |
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| 186 | throw new Exception("Non-integer was passed to Profile validator!"); |
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| 187 | } |
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| 188 | $temp = new \core\DeploymentManaged($idp, $clean); // constructor throws an exception if NX, game over |
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| 189 | |||
| 190 | if ($temp->institution != $idp->identifier) { |
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| 191 | throw new Exception($this->inputValidationError("The profile does not belong to the IdP!")); |
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| 192 | } |
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| 193 | return $temp; |
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| 194 | } |
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| 195 | |||
| 196 | /** |
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| 197 | * Checks if this is a device known to the system |
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| 198 | * @param mixed $input the name of the device (index in the Devices.php array) |
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| 199 | * @return string returns the same string on success, throws an Exception on failure |
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| 200 | * @throws Exception |
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| 201 | */ |
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| 202 | public function existingDevice($input) |
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| 203 | { |
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| 204 | $devicelist = \devices\Devices::listDevices(); |
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| 205 | $keyArray = array_keys($devicelist); |
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| 206 | if (!isset($devicelist[$input])) { |
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| 207 | throw new Exception($this->inputValidationError("This device does not exist!")); |
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| 208 | } |
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| 209 | $correctIndex = array_search($input, $keyArray); |
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| 210 | return $keyArray[$correctIndex]; |
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| 211 | } |
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| 212 | |||
| 213 | /** |
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| 214 | * Checks if the input was a valid string. |
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| 215 | * |
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| 216 | * @param mixed $input a string to be made SQL-safe |
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| 217 | * @param boolean $allowWhitespace whether some whitespace (e.g. newlines should be preserved (true) or redacted (false) |
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| 218 | * @return string the massaged string |
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| 219 | * @throws Exception |
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| 220 | */ |
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| 221 | public function string($input, $allowWhitespace = FALSE) |
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| 222 | { |
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| 223 | // always chop out invalid characters, and surrounding whitespace |
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| 224 | $retvalStep0 = iconv("UTF-8", "UTF-8//TRANSLIT", $input); |
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| 225 | if ($retvalStep0 === FALSE) { |
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| 226 | throw new Exception("iconv failure for string sanitisation. With TRANSLIT, this should never happen!"); |
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| 227 | } |
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| 228 | $retvalStep1 = trim($retvalStep0); |
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| 229 | // if some funny person wants to inject markup tags, remove them |
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| 230 | $retval = filter_var($retvalStep1, FILTER_SANITIZE_STRING, ["flags" => FILTER_FLAG_NO_ENCODE_QUOTES]); |
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| 231 | if ($retval === FALSE) { |
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| 232 | throw new Exception("filter_var failure for string sanitisation."); |
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| 233 | } |
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| 234 | // unless explicitly wanted, take away intermediate disturbing whitespace |
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| 235 | // a simple "space" is NOT disturbing :-) |
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| 236 | if ($allowWhitespace === FALSE) { |
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| 237 | $afterWhitespace = preg_replace('/(\0|\r|\x0b|\t|\n)/', '', $retval); |
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| 238 | } else { |
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| 239 | // even if we allow whitespace, not pathological ones! |
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| 240 | $afterWhitespace = preg_replace('/(\0|\r|\x0b)/', '', $retval); |
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| 241 | } |
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| 242 | if (is_array($afterWhitespace)) { |
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| 243 | 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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| 244 | } |
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| 245 | return (string) $afterWhitespace; |
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| 246 | } |
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| 247 | |||
| 248 | /** |
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| 249 | * Is this an integer, or a string that represents an integer? |
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| 250 | * |
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| 251 | * @param mixed $input the raw input |
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| 252 | * @return boolean|int returns the input, or FALSE if it is not an integer-like value |
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| 253 | */ |
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| 254 | public function integer($input) |
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| 260 | } |
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| 261 | |||
| 262 | /** |
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| 263 | * Is this a string representing a potentially more than 64-Bit length integer? |
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| 264 | * |
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| 265 | * @param string $input the input data which is possibly a really large integer |
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| 266 | * @return boolean|string returns the input, or FALSE if it is not an integer-like string |
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| 267 | */ |
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| 268 | public function hugeInteger($input) |
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| 269 | { |
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| 270 | if (is_numeric($input)) { |
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| 271 | return $input; |
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| 272 | } |
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| 273 | return FALSE; |
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| 274 | } |
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| 275 | |||
| 276 | /** |
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| 277 | * Checks if the input is the hex representation of a Consortium OI (i.e. three |
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| 278 | * or five bytes) |
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| 279 | * |
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| 280 | * @param mixed $input the raw input |
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| 281 | * @return boolean|string returns the input, or FALSE on validation failure |
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| 282 | */ |
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| 283 | public function consortiumOI($input) |
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| 284 | { |
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| 285 | $shallow = $this->string($input); |
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| 286 | if (strlen($shallow) != 6 && strlen($shallow) != 10) { |
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| 287 | return FALSE; |
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| 288 | } |
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| 289 | if (!preg_match("/^[a-fA-F0-9]+$/", $shallow)) { |
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| 290 | return FALSE; |
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| 291 | } |
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| 292 | return $shallow; |
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| 293 | } |
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| 294 | |||
| 295 | /** |
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| 296 | * Is the input an NAI realm? Throws HTML error and returns FALSE if not. |
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| 297 | * |
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| 298 | * @param mixed $input the input to check |
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| 299 | * @return boolean|string returns the realm, or FALSE if it was malformed |
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| 300 | */ |
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| 301 | public function realm($input) |
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| 302 | { |
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| 303 | \core\common\Entity::intoThePotatoes(); |
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| 304 | if (strlen($input) == 0) { |
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| 305 | echo $this->inputValidationError(_("Realm is empty!")); |
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| 306 | \core\common\Entity::outOfThePotatoes(); |
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| 307 | return FALSE; |
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| 308 | } |
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| 309 | |||
| 310 | // basic string checks |
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| 311 | $check = $this->string($input); |
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| 312 | // list of things to check, and the error they produce |
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| 313 | $pregCheck = [ |
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| 314 | "/@/" => _("Realm contains an @ sign!"), |
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| 315 | "/^\./" => _("Realm begins with a . (dot)!"), |
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| 316 | "/\.$/" => _("Realm ends with a . (dot)!"), |
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| 317 | "/ /" => _("Realm contains spaces!"), |
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| 318 | ]; |
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| 319 | |||
| 320 | // bark on invalid constructs |
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| 321 | foreach ($pregCheck as $search => $error) { |
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| 322 | if (preg_match($search, $check) == 1) { |
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| 323 | echo $this->inputValidationError($error); |
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| 324 | \core\common\Entity::outOfThePotatoes(); |
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| 325 | return FALSE; |
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| 326 | } |
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| 327 | } |
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| 328 | |||
| 329 | if (preg_match("/\./", $check) == 0) { |
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| 330 | echo $this->inputValidationError(_("Realm does not contain at least one . (dot)!")); |
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| 331 | \core\common\Entity::outOfThePotatoes(); |
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| 332 | return FALSE; |
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| 333 | } |
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| 334 | |||
| 335 | // none of the special HTML entities should be here. In case someone wants |
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| 336 | // to mount a CSS attack by providing something that matches the realm constructs |
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| 337 | // below but has interesting stuff between, mangle the input so that these |
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| 338 | // characters do not do any harm. |
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| 339 | \core\common\Entity::outOfThePotatoes(); |
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| 340 | return htmlentities($check, ENT_QUOTES); |
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| 341 | } |
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| 342 | |||
| 343 | /** |
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| 344 | * could this be a valid username? |
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| 345 | * |
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| 346 | * Only checks correct form, not if the user actually exists in the system. |
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| 347 | * |
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| 348 | * @param mixed $input the username |
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| 349 | * @return string echoes back the input string, or throws an Exception if bogus |
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| 350 | * @throws Exception |
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| 351 | */ |
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| 352 | public function syntaxConformUser($input) |
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| 353 | { |
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| 354 | $retvalStep0 = iconv("UTF-8", "UTF-8//TRANSLIT", $input); |
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| 355 | if ($retvalStep0 === FALSE) { |
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| 356 | throw new Exception("iconv failure for string sanitisation. With TRANSLIT, this should never happen!"); |
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| 357 | } |
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| 358 | $retvalStep1 = trim($retvalStep0); |
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| 359 | |||
| 360 | $retval = preg_replace('/(\0|\r|\x0b|\t|\n)/', '', $retvalStep1); |
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| 361 | if ($retval != "" && !ctype_print($retval)) { |
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| 362 | throw new Exception($this->inputValidationError("The user identifier is not an ASCII string!")); |
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| 363 | } |
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| 364 | |||
| 365 | return $retval; |
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| 366 | } |
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| 367 | |||
| 368 | /** |
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| 369 | * could this be a valid token? |
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| 370 | * |
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| 371 | * Only checks correct form, not if the token actually exists in the system. |
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| 372 | * @param mixed $input the raw input |
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| 373 | * @return string echoes back the input string, or throws an Exception if bogus |
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| 374 | * @throws Exception |
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| 375 | */ |
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| 376 | public function token($input) |
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| 377 | { |
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| 378 | $retval = $input; |
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| 379 | if ($input != "" && preg_match('/[^0-9a-fA-F]/', $input) != 0) { |
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| 380 | throw new Exception($this->inputValidationError("Token is not a hexadecimal string!")); |
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| 381 | } |
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| 382 | return $retval; |
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| 383 | } |
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| 384 | |||
| 385 | /** |
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| 386 | * Is this be a valid coordinate vector on one axis? |
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| 387 | * |
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| 388 | * @param mixed $input a numeric value in range of a geo coordinate [-180;180] |
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| 389 | * @return string returns back the input if all is good; throws an Exception if out of bounds or not numeric |
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| 390 | * @throws Exception |
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| 391 | */ |
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| 392 | public function coordinate($input) |
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| 393 | { |
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| 394 | $oldlocale = setlocale(LC_NUMERIC, 0); |
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| 395 | setlocale(LC_NUMERIC, "en_GB"); |
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| 396 | if (!is_numeric($input)) { |
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| 397 | throw new Exception($this->inputValidationError("Coordinate is not a numeric value!")); |
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| 398 | } |
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| 399 | setlocale(LC_NUMERIC, $oldlocale); |
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| 400 | // lat and lon are always in the range of [-180;+180] |
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| 401 | if ($input < -180 || $input > 180) { |
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| 402 | throw new Exception($this->inputValidationError("Coordinate is out of bounds. Which planet are you from?")); |
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| 403 | } |
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| 404 | return $input; |
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| 405 | } |
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| 406 | |||
| 407 | /** |
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| 408 | * Is this a valid coordinate pair in JSON encoded representation? |
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| 409 | * |
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| 410 | * @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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| 411 | * @return string returns $input if checks have passed; throws an Exception if something's wrong |
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| 412 | * @throws Exception |
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| 413 | */ |
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| 414 | public function coordJsonEncoded($input) |
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| 415 | { |
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| 416 | $tentative = json_decode($input, true); |
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| 417 | if (is_array($tentative)) { |
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| 418 | if (isset($tentative['lon']) && isset($tentative['lat']) && $this->coordinate($tentative['lon']) && $this->coordinate($tentative['lat'])) { |
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| 419 | return $input; |
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| 420 | } |
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| 421 | } |
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| 422 | throw new Exception($this->inputValidationError("Wrong coordinate encoding (2.0 uses JSON, not serialize)!")); |
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| 423 | } |
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| 424 | |||
| 425 | /** |
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| 426 | * This checks the state of a HTML GET/POST "boolean". |
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| 427 | * |
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| 428 | * If not checked, no value is submitted at all; if checked, has the word "on". |
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| 429 | * Anything else is a big error. |
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| 430 | * |
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| 431 | * @param mixed $input the string to test |
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| 432 | * @return boolean TRUE if the input was "on". It is not possible in HTML to signal "off" |
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| 433 | * @throws Exception |
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| 434 | */ |
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| 435 | public function boolean($input) |
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| 436 | { |
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| 437 | if ($input != "on") { |
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| 438 | throw new Exception($this->inputValidationError("Unknown state of boolean option!")); |
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| 439 | } |
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| 440 | return TRUE; |
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| 441 | } |
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| 442 | |||
| 443 | /** |
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| 444 | * checks if we have the strings "IdP" "SP" or "IdPSP" |
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| 445 | * |
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| 446 | * @param string $partTypeRaw the string to be validated as participant type |
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| 447 | * @return string validated result |
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| 448 | * @throws Exception |
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| 449 | */ |
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| 450 | public function partType($partTypeRaw) |
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| 461 | } |
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| 462 | } |
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| 463 | |||
| 464 | const TABLEMAPPING = [ |
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| 465 | "IdP" => "institution_option", |
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| 466 | "Profile" => "profile_option", |
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| 467 | "FED" => "federation_option", |
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| 468 | ]; |
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| 469 | |||
| 470 | /** |
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| 471 | * Is this a valid database reference? Has the form <tablename>-<rowID> and there |
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| 472 | * needs to be actual data at that place |
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| 473 | * |
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| 474 | * @param string $input the reference to check |
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| 475 | * @return boolean|array the reference split up into "table" and "rowindex", or FALSE |
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| 476 | */ |
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| 477 | public function databaseReference($input) |
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| 488 | } |
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| 489 | |||
| 490 | /** |
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| 491 | * is this a valid hostname? |
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| 492 | * |
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| 493 | * @param mixed $input the raw input |
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| 494 | * @return boolean|string echoes the hostname, or FALSE if bogus |
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| 495 | */ |
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| 496 | public function hostname($input) |
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| 497 | { |
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| 498 | // is it a valid IP address (IPv4 or IPv6), or a hostname? |
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| 499 | if (filter_var($input, FILTER_VALIDATE_IP) || filter_var($input, FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME)) { |
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| 500 | // if it's a verified IP address or hostname then it does not contain |
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| 501 | // rubbish of course. But just to be sure, run htmlspecialchars around it |
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| 502 | return htmlspecialchars($input, ENT_QUOTES); |
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| 503 | } |
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| 504 | return FALSE; |
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| 505 | } |
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| 506 | |||
| 507 | /** |
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| 508 | * is this a valid email address? |
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| 509 | * |
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| 510 | * @param mixed $input the raw input |
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| 511 | * @return boolean|string echoes the mail address, or FALSE if bogus |
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| 512 | */ |
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| 513 | public function email($input) |
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| 521 | } |
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| 522 | |||
| 523 | /** |
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| 524 | * is this a well-formed SMS number? Light massaging - leading + will be removed |
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| 525 | * @param string $input the raw input |
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| 526 | * @return boolean|string |
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| 527 | */ |
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| 528 | public function sms($input) |
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| 529 | { |
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| 530 | $number = str_replace(' ', '', str_replace(".", "", str_replace("+", "", $input))); |
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| 531 | if (!is_numeric($number)) { |
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| 532 | return FALSE; |
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| 533 | } |
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| 534 | return $number; |
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| 535 | } |
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| 536 | |||
| 537 | /** |
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| 538 | * Is this is a language we support? If not, sanitise to our configured default language. |
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| 539 | * |
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| 540 | * @param mixed $input the candidate language identifier |
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| 541 | * @return string |
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| 542 | * @throws Exception |
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| 543 | */ |
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| 544 | public function supportedLanguage($input) |
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| 556 | } |
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| 557 | |||
| 558 | /** |
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| 559 | * Makes sure we are not receiving a bogus option name. The called function throws |
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| 560 | * an assertion if the name is not known. |
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| 561 | * |
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| 562 | * @param mixed $input the unvetted option name |
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| 563 | * @return string |
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| 564 | */ |
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| 565 | public function optionName($input) |
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| 569 | } |
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| 570 | |||
| 571 | /** |
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| 572 | * Checks to see if the input is a valid image of sorts |
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| 573 | * |
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| 574 | * @param mixed $binary blob that may or may not be a parseable image |
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| 575 | * @return boolean |
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| 576 | */ |
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| 577 | public function image($binary) |
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| 592 | } |
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| 593 | |||
| 594 | /** |
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| 595 | * searches for values in GET and POST, and filters the value according to |
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| 596 | * which kind of data is expected |
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| 597 | * |
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| 598 | * @param string $varName name of the variable in GET/POST |
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| 599 | * @param string $filter which type of filter to apply (safe_text / int) |
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| 600 | * @return NULL|string|integer the returned value |
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| 601 | */ |
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| 602 | public function simpleInputFilter($varName, $filter) |
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| 620 | } |
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| 621 | |||
| 622 | } |
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| 623 |
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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