diff options
Diffstat (limited to 'vendor/fgrosse/phpasn1/lib/ASN1/Universal/BitString.php')
-rw-r--r-- | vendor/fgrosse/phpasn1/lib/ASN1/Universal/BitString.php | 176 |
1 files changed, 88 insertions, 88 deletions
diff --git a/vendor/fgrosse/phpasn1/lib/ASN1/Universal/BitString.php b/vendor/fgrosse/phpasn1/lib/ASN1/Universal/BitString.php index 226695c..29eeb54 100644 --- a/vendor/fgrosse/phpasn1/lib/ASN1/Universal/BitString.php +++ b/vendor/fgrosse/phpasn1/lib/ASN1/Universal/BitString.php @@ -1,88 +1,88 @@ -<?php -/* - * This file is part of the PHPASN1 library. - * - * Copyright © Friedrich Große <friedrich.grosse@gmail.com> - * - * For the full copyright and license information, please view the LICENSE - * file that was distributed with this source code. - */ - -namespace FG\ASN1\Universal; - -use Exception; -use FG\ASN1\Exception\ParserException; -use FG\ASN1\Parsable; -use FG\ASN1\Identifier; - -class BitString extends OctetString implements Parsable -{ - private $nrOfUnusedBits; - - /** - * Creates a new ASN.1 BitString object. - * - * @param string|int $value Either the hexadecimal value as a string (spaces are allowed - leading 0x is optional) or a numeric value - * @param int $nrOfUnusedBits the number of unused bits in the last octet [optional]. - * - * @throws Exception if the second parameter is no positive numeric value - */ - public function __construct($value, $nrOfUnusedBits = 0) - { - parent::__construct($value); - - if (!is_numeric($nrOfUnusedBits) || $nrOfUnusedBits < 0) { - throw new Exception('BitString: second parameter needs to be a positive number (or zero)!'); - } - - $this->nrOfUnusedBits = $nrOfUnusedBits; - } - - public function getType() - { - return Identifier::BITSTRING; - } - - protected function calculateContentLength() - { - // add one to the length for the first octet which encodes the number of unused bits in the last octet - return parent::calculateContentLength() + 1; - } - - protected function getEncodedValue() - { - // the first octet determines the number of unused bits - $nrOfUnusedBitsOctet = chr($this->nrOfUnusedBits); - $actualContent = parent::getEncodedValue(); - - return $nrOfUnusedBitsOctet.$actualContent; - } - - public function getNumberOfUnusedBits() - { - return $this->nrOfUnusedBits; - } - - public static function fromBinary(&$binaryData, &$offsetIndex = 0) - { - self::parseIdentifier($binaryData[$offsetIndex], Identifier::BITSTRING, $offsetIndex++); - $contentLength = self::parseContentLength($binaryData, $offsetIndex, 2); - - $nrOfUnusedBits = ord($binaryData[$offsetIndex]); - $value = substr($binaryData, $offsetIndex + 1, $contentLength - 1); - - if ($nrOfUnusedBits > 7 || // no less than 1 used, otherwise non-minimal - ($contentLength - 1) == 1 && $nrOfUnusedBits > 0 || // content length only 1, no - (ord($value[strlen($value)-1])&((1<<$nrOfUnusedBits)-1)) != 0 // unused bits set - ) { - throw new ParserException("Can not parse bit string with invalid padding", $offsetIndex); - } - - $offsetIndex += $contentLength; - - $parsedObject = new self(bin2hex($value), $nrOfUnusedBits); - $parsedObject->setContentLength($contentLength); - - return $parsedObject; - } -} +<?php
+/*
+ * This file is part of the PHPASN1 library.
+ *
+ * Copyright © Friedrich Große <friedrich.grosse@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FG\ASN1\Universal;
+
+use Exception;
+use FG\ASN1\Exception\ParserException;
+use FG\ASN1\Parsable;
+use FG\ASN1\Identifier;
+
+class BitString extends OctetString implements Parsable
+{
+ private $nrOfUnusedBits;
+
+ /**
+ * Creates a new ASN.1 BitString object.
+ *
+ * @param string|int $value Either the hexadecimal value as a string (spaces are allowed - leading 0x is optional) or a numeric value
+ * @param int $nrOfUnusedBits the number of unused bits in the last octet [optional].
+ *
+ * @throws Exception if the second parameter is no positive numeric value
+ */
+ public function __construct($value, $nrOfUnusedBits = 0)
+ {
+ parent::__construct($value);
+
+ if (!is_numeric($nrOfUnusedBits) || $nrOfUnusedBits < 0) {
+ throw new Exception('BitString: second parameter needs to be a positive number (or zero)!');
+ }
+
+ $this->nrOfUnusedBits = $nrOfUnusedBits;
+ }
+
+ public function getType()
+ {
+ return Identifier::BITSTRING;
+ }
+
+ protected function calculateContentLength()
+ {
+ // add one to the length for the first octet which encodes the number of unused bits in the last octet
+ return parent::calculateContentLength() + 1;
+ }
+
+ protected function getEncodedValue()
+ {
+ // the first octet determines the number of unused bits
+ $nrOfUnusedBitsOctet = chr($this->nrOfUnusedBits);
+ $actualContent = parent::getEncodedValue();
+
+ return $nrOfUnusedBitsOctet.$actualContent;
+ }
+
+ public function getNumberOfUnusedBits()
+ {
+ return $this->nrOfUnusedBits;
+ }
+
+ public static function fromBinary(&$binaryData, &$offsetIndex = 0)
+ {
+ self::parseIdentifier($binaryData[$offsetIndex], Identifier::BITSTRING, $offsetIndex++);
+ $contentLength = self::parseContentLength($binaryData, $offsetIndex, 2);
+
+ $nrOfUnusedBits = ord($binaryData[$offsetIndex]);
+ $value = substr($binaryData, $offsetIndex + 1, $contentLength - 1);
+
+ if ($nrOfUnusedBits > 7 || // no less than 1 used, otherwise non-minimal
+ ($contentLength - 1) == 1 && $nrOfUnusedBits > 0 || // content length only 1, no
+ (ord($value[strlen($value)-1])&((1<<$nrOfUnusedBits)-1)) != 0 // unused bits set
+ ) {
+ throw new ParserException("Can not parse bit string with invalid padding", $offsetIndex);
+ }
+
+ $offsetIndex += $contentLength;
+
+ $parsedObject = new self(bin2hex($value), $nrOfUnusedBits);
+ $parsedObject->setContentLength($contentLength);
+
+ return $parsedObject;
+ }
+}
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