primo commit

libraries/vendor/web-token/jwt-library/Checker/ClaimCheckerManager.php

@@ -0,0 +1,87 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Jose\Component\Checker;
+
+use function array_key_exists;
+use function count;
+
+/**
+ * This manager handles as many claim checkers as needed.
+ *
+ * @see \Jose\Tests\Component\Checker\ClaimCheckerManagerTest
+ */
+class ClaimCheckerManager
+{
+    /**
+     * @var ClaimChecker[]
+     */
+    private array $checkers = [];
+
+    /**
+     * @param ClaimChecker[] $checkers
+     */
+    public function __construct(iterable $checkers)
+    {
+        foreach ($checkers as $checker) {
+            $this->add($checker);
+        }
+    }
+
+    /**
+     * This method returns all checkers handled by this manager.
+     *
+     * @return ClaimChecker[]
+     */
+    public function getCheckers(): array
+    {
+        return $this->checkers;
+    }
+
+    /**
+     * This method checks all the claims passed as argument. All claims are checked against the claim checkers. If one
+     * fails, the InvalidClaimException is thrown.
+     *
+     * This method returns an array with all checked claims. It is up to the implementor to decide use the claims that
+     * have not been checked.
+     *
+     * @param string[] $mandatoryClaims
+     */
+    public function check(array $claims, array $mandatoryClaims = []): array
+    {
+        $this->checkMandatoryClaims($mandatoryClaims, $claims);
+        $checkedClaims = [];
+        foreach ($this->checkers as $claim => $checker) {
+            if (array_key_exists($claim, $claims)) {
+                $checker->checkClaim($claims[$claim]);
+                $checkedClaims[$claim] = $claims[$claim];
+            }
+        }
+
+        return $checkedClaims;
+    }
+
+    private function add(ClaimChecker $checker): void
+    {
+        $claim = $checker->supportedClaim();
+        $this->checkers[$claim] = $checker;
+    }
+
+    /**
+     * @param string[] $mandatoryClaims
+     */
+    private function checkMandatoryClaims(array $mandatoryClaims, array $claims): void
+    {
+        if (count($mandatoryClaims) === 0) {
+            return;
+        }
+        $diff = array_keys(array_diff_key(array_flip($mandatoryClaims), $claims));
+        if (count($diff) !== 0) {
+            throw new MissingMandatoryClaimException(sprintf(
+                'The following claims are mandatory: %s.',
+                implode(', ', $diff)
+            ), $diff);
+        }
+    }
+}