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<?php |
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/* |
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* The MIT License |
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* |
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* Copyright 2019 Daniel Popiniuc |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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namespace danielgp\io_operations; |
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trait InputOutputFilePermissions |
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{ |
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/** |
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* Returns an array with meaningful content of permissions |
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* |
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* @param int $permissionNumber |
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* @return array |
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*/ |
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public function explainPerms($permissionNumber) |
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{ |
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$firstFlag = $this->matchFirstFlagSingle($permissionNumber); |
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$permissionsString = substr(sprintf('%o', $permissionNumber), -4); |
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$numericalPermissions = $this->numericalPermissionsArray(); |
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return [ |
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'Permissions' => $permissionNumber, |
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'Code' => $permissionsString, |
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'First' => $firstFlag, |
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'Overall' => implode('', [ |
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$firstFlag['code'], |
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$numericalPermissions[substr($permissionsString, 1, 1)]['code'], |
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$numericalPermissions[substr($permissionsString, 2, 1)]['code'], |
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$numericalPermissions[substr($permissionsString, 3, 1)]['code'], |
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]), |
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'First' => $firstFlag, |
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'Owner' => $numericalPermissions[substr($permissionsString, 1, 1)], |
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'Group' => $numericalPermissions[substr($permissionsString, 2, 1)], |
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'World/Other' => $numericalPermissions[substr($permissionsString, 3, 1)], |
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]; |
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} |
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private function firstFlagCodeArray() |
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{ |
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return [ |
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0x8000 => '-', |
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0x6000 => 'b', |
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0x2000 => 'c', |
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0x4000 => 'd', |
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0xA000 => 'l', |
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0x1000 => 'p', |
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0xC000 => 's', |
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]; |
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} |
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private function firstFlagDescriptionArray($codeFlag) |
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{ |
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$aCodes = [ |
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'-' => 'Regular', |
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'b' => 'Block special', |
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'c' => 'Character special', |
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'd' => 'Directory', |
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'l' => 'Symbolic Link', |
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'p' => 'FIFO pipe', |
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's' => 'Socket', |
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'w' => 'Whiteout', |
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]; |
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return ['code' => $codeFlag, 'name' => $aCodes[$codeFlag]]; |
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} |
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private function matchFirstFlagSingle($permissionNumber) |
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{ |
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$aCodes = $this->firstFlagCodeArray(); |
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$matchedCode = 'w'; |
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foreach ($aCodes as $key => $value) { |
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if (($permissionNumber & $key) == $key) { |
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$matchedCode = $value; |
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} |
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} |
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return $this->firstFlagDescriptionArray($matchedCode); |
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} |
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private function numericalPermissionsArray() |
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{ |
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return [ |
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0 => ['code' => '---', 'name' => 'none'], |
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1 => ['code' => '--x', 'name' => 'execute only'], |
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2 => ['code' => '-w-', 'name' => 'write only'], |
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3 => ['code' => '-wx', 'name' => 'write and execute'], |
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4 => ['code' => 'r--', 'name' => 'read only'], |
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5 => ['code' => 'r-x', 'name' => 'read and execute'], |
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6 => ['code' => 'rw-', 'name' => 'read and write'], |
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7 => ['code' => 'rwx', 'name' => 'read, write and execute'], |
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]; |
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} |
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} |
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danielgp /
io-operations
