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<?php |
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declare(strict_types=1); |
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namespace Dominikb\ComposerLicenseChecker; |
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use Dominikb\ComposerLicenseChecker\Contracts\LicenseConstraintHandler; |
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use Dominikb\ComposerLicenseChecker\Exceptions\LogicException; |
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class ConstraintViolationDetector implements LicenseConstraintHandler |
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{ |
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/** @var string[] */ |
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protected $blocklist = []; |
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/** @var string[] */ |
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protected $allowlist = []; |
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/** @var Dependency[] */ |
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private $alwaysAllowed = []; |
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public function setBlocklist(array $licenses): void |
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{ |
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$this->blocklist = $licenses; |
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} |
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public function setAllowlist(array $licenses): void |
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{ |
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$this->allowlist = $licenses; |
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} |
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public function allow($dependencies): void |
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{ |
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if (! is_array($dependencies)) { |
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$dependencies = [$dependencies]; |
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} |
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foreach ($dependencies as $allowed) { |
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$this->alwaysAllowed[] = $allowed; |
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} |
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} |
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/** |
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* @param Dependency[] $dependencies |
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* |
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* @return ConstraintViolation[] |
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* @throws LogicException |
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*/ |
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public function detectViolations(array $dependencies): array |
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{ |
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$this->ensureConfigurationIsValid(); |
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$possibleViolators = $this->exceptAllowed($dependencies); |
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return [ |
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$this->detectBlocklistViolation($possibleViolators), |
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$this->detectAllowlistViolation($possibleViolators), |
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]; |
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} |
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/** |
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* @throws LogicException |
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*/ |
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public function ensureConfigurationIsValid(): void |
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{ |
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$overlap = array_intersect($this->blocklist, $this->allowlist); |
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if (count($overlap) > 0) { |
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$invalidLicenseConditionals = sprintf('"%s"', implode('", "', $overlap)); |
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throw new LogicException("Licenses must not be on the block- and allowlist at the same time: ${invalidLicenseConditionals}"); |
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} |
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} |
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/** |
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* @param Dependency[] $dependencies |
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*/ |
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private function detectBlocklistViolation(array $dependencies): ConstraintViolation |
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{ |
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$violation = new ConstraintViolation('Blocked license found!'); |
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if (! empty($this->blocklist)) { |
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foreach ($dependencies as $dependency) { |
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if ($this->allLicensesOnList($dependency->getLicenses(), $this->blocklist)) { |
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$violation->add($dependency); |
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} |
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} |
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} |
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return $violation; |
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} |
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/** |
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* @param Dependency[] $dependencies |
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*/ |
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private function detectAllowlistViolation(array $dependencies): ConstraintViolation |
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{ |
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$violation = new ConstraintViolation('Unallowed license found!'); |
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if (! empty($this->allowlist)) { |
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foreach ($dependencies as $dependency) { |
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if (! $this->anyLicenseOnList($dependency->getLicenses(), $this->allowlist)) { |
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$violation->add($dependency); |
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} |
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} |
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} |
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return $violation; |
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} |
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private function allLicensesOnList(array $licenses, array $list): bool |
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{ |
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return count(array_intersect($licenses, $list)) === count($licenses); |
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} |
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private function anyLicenseOnList(array $licenses, array $list): bool |
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{ |
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return count(array_intersect($licenses, $list)) > 0; |
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} |
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/** |
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* @param Dependency[] $dependencies |
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* |
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* @return Dependency[] |
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*/ |
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private function exceptAllowed(array $dependencies): array |
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{ |
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$possiblyViolating = []; |
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if (empty($this->alwaysAllowed)) { |
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return $dependencies; |
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} |
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foreach ($dependencies as $dependency) { |
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foreach ($this->alwaysAllowed as $allowedDependency) { |
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if ($this->matches($allowedDependency, $dependency)) { |
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continue 2; // Outer for: test next dependency |
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} |
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} |
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$possiblyViolating[] = $dependency; |
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} |
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return $possiblyViolating; |
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} |
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/** |
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* Determine if the $original author and package name match for $tryMatch. |
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* An empty string for either the author or package gets interpreted as a wilcard. |
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* |
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* @param Dependency $original |
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* @param Dependency $tryMatch |
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* |
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* @return bool |
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*/ |
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private function matches(Dependency $original, Dependency $tryMatch): bool |
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{ |
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if ($original->getAuthorName()) { |
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if (! ($original->getAuthorName() === $tryMatch->getAuthorName())) { |
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return false; |
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} |
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} |
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if ($original->getPackageName()) { |
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if (! ($original->getPackageName() === $tryMatch->getPackageName())) { |
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return false; |
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} |
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} |
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return true; |
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} |
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} |
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dominikb /
composer-license-checker
