1 files changed, 60 insertions, 0 deletions
diff --git a/vendor/ipl/validator/src/CidrValidator.php b/vendor/ipl/validator/src/CidrValidator.php
new file mode 100644
index 0000000..32c1162
--- /dev/null
+++ b/vendor/ipl/validator/src/CidrValidator.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace ipl\Validator;
+
+use ipl\I18n\Translation;
+use ipl\Stdlib\Str;
+
+/**
+ * Validate a classless inter-domain routing (CIDR)
+ */
+class CidrValidator extends BaseValidator
+{
+    use Translation;
+
+    public function isValid($value): bool
+    {
+        $this->clearMessages();
+
+        $pieces = Str::trimSplit($value, '/');
+        if (count($pieces) !== 2) {
+            $this->addMessage(sprintf(
+                $this->translate('CIDR "%s" does not conform to the required format $address/$prefix'),
+                $value
+            ));
+
+            return false;
+        }
+
+        list($address, $prefix) = $pieces;
+        $inaddr = @inet_pton($address);
+        if ($inaddr === false) {
+            $this->addMessage(sprintf($this->translate('CIDR "%s" contains an invalid address'), $value));
+
+            return false;
+        }
+
+        if (! is_numeric($prefix)) {
+            $this->addMessage(sprintf($this->translate('Prefix of CIDR "%s" must be a number'), $value));
+
+            return false;
+        }
+
+        $isIPv6 = isset($inaddr[4]);
+        $prefix = (int) $prefix;
+        $maxPrefixLength = $isIPv6 ? 128 : 32;
+
+        if ($prefix < 0 || $prefix > $maxPrefixLength) {
+            $this->addMessage(sprintf(
+                $this->translate('Prefix length of CIDR "%s" must be between 0 and %d for IPv%d addresses'),
+                $value,
+                $maxPrefixLength,
+                $isIPv6 ? 6 : 4
+            ));
+
+            return false;
+        }
+
+        return true;
+    }
+}