diff options
Diffstat (limited to 'vendor/paragonie/sodium_compat/src/Core/Base64/Common.php')
| -rw-r--r-- | vendor/paragonie/sodium_compat/src/Core/Base64/Common.php | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/vendor/paragonie/sodium_compat/src/Core/Base64/Common.php b/vendor/paragonie/sodium_compat/src/Core/Base64/Common.php deleted file mode 100644 index 94b2e8f..0000000 --- a/vendor/paragonie/sodium_compat/src/Core/Base64/Common.php +++ /dev/null @@ -1,213 +0,0 @@ -<?php - -/** - * Class ParagonIE_Sodium_Core_Base64 - * - * Copyright (c) 2016 - 2018 Paragon Initiative Enterprises. - * Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com) - * - * We have to copy/paste the contents into the variant files because PHP 5.2 - * doesn't support late static binding, and we have no better workaround - * available that won't break PHP 7+. Therefore, we're forced to duplicate code. - */ -abstract class ParagonIE_Sodium_Core_Base64_Common -{ - /** - * Encode into Base64 - * - * Base64 character set "[A-Z][a-z][0-9]+/" - * - * @param string $src - * @return string - * @throws TypeError - */ - public static function encode($src) - { - return self::doEncode($src, true); - } - - /** - * Encode into Base64, no = padding - * - * Base64 character set "[A-Z][a-z][0-9]+/" - * - * @param string $src - * @return string - * @throws TypeError - */ - public static function encodeUnpadded($src) - { - return self::doEncode($src, false); - } - - /** - * @param string $src - * @param bool $pad Include = padding? - * @return string - * @throws TypeError - */ - protected static function doEncode($src, $pad = true) - { - $dest = ''; - $srcLen = ParagonIE_Sodium_Core_Util::strlen($src); - // Main loop (no padding): - for ($i = 0; $i + 3 <= $srcLen; $i += 3) { - /** @var array<int, int> $chunk */ - $chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, 3)); - $b0 = $chunk[1]; - $b1 = $chunk[2]; - $b2 = $chunk[3]; - - $dest .= - self::encode6Bits( $b0 >> 2 ) . - self::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) . - self::encode6Bits((($b1 << 2) | ($b2 >> 6)) & 63) . - self::encode6Bits( $b2 & 63); - } - // The last chunk, which may have padding: - if ($i < $srcLen) { - /** @var array<int, int> $chunk */ - $chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, $srcLen - $i)); - $b0 = $chunk[1]; - if ($i + 1 < $srcLen) { - $b1 = $chunk[2]; - $dest .= - self::encode6Bits($b0 >> 2) . - self::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) . - self::encode6Bits(($b1 << 2) & 63); - if ($pad) { - $dest .= '='; - } - } else { - $dest .= - self::encode6Bits( $b0 >> 2) . - self::encode6Bits(($b0 << 4) & 63); - if ($pad) { - $dest .= '=='; - } - } - } - return $dest; - } - - /** - * decode from base64 into binary - * - * Base64 character set "./[A-Z][a-z][0-9]" - * - * @param string $src - * @param bool $strictPadding - * @return string - * @throws RangeException - * @throws TypeError - * @psalm-suppress RedundantCondition - */ - public static function decode($src, $strictPadding = false) - { - // Remove padding - $srcLen = ParagonIE_Sodium_Core_Util::strlen($src); - if ($srcLen === 0) { - return ''; - } - - if ($strictPadding) { - if (($srcLen & 3) === 0) { - if ($src[$srcLen - 1] === '=') { - $srcLen--; - if ($src[$srcLen - 1] === '=') { - $srcLen--; - } - } - } - if (($srcLen & 3) === 1) { - throw new RangeException( - 'Incorrect padding' - ); - } - if ($src[$srcLen - 1] === '=') { - throw new RangeException( - 'Incorrect padding' - ); - } - } else { - $src = rtrim($src, '='); - $srcLen = ParagonIE_Sodium_Core_Util::strlen($src); - } - - $err = 0; - $dest = ''; - // Main loop (no padding): - for ($i = 0; $i + 4 <= $srcLen; $i += 4) { - /** @var array<int, int> $chunk */ - $chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, 4)); - $c0 = self::decode6Bits($chunk[1]); - $c1 = self::decode6Bits($chunk[2]); - $c2 = self::decode6Bits($chunk[3]); - $c3 = self::decode6Bits($chunk[4]); - - $dest .= pack( - 'CCC', - ((($c0 << 2) | ($c1 >> 4)) & 0xff), - ((($c1 << 4) | ($c2 >> 2)) & 0xff), - ((($c2 << 6) | $c3 ) & 0xff) - ); - $err |= ($c0 | $c1 | $c2 | $c3) >> 8; - } - // The last chunk, which may have padding: - if ($i < $srcLen) { - /** @var array<int, int> $chunk */ - $chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, $srcLen - $i)); - $c0 = self::decode6Bits($chunk[1]); - - if ($i + 2 < $srcLen) { - $c1 = self::decode6Bits($chunk[2]); - $c2 = self::decode6Bits($chunk[3]); - $dest .= pack( - 'CC', - ((($c0 << 2) | ($c1 >> 4)) & 0xff), - ((($c1 << 4) | ($c2 >> 2)) & 0xff) - ); - $err |= ($c0 | $c1 | $c2) >> 8; - } elseif ($i + 1 < $srcLen) { - $c1 = self::decode6Bits($chunk[2]); - $dest .= pack( - 'C', - ((($c0 << 2) | ($c1 >> 4)) & 0xff) - ); - $err |= ($c0 | $c1) >> 8; - } elseif ($i < $srcLen && $strictPadding) { - $err |= 1; - } - } - /** @var bool $check */ - $check = ($err === 0); - if (!$check) { - throw new RangeException( - 'Base64::decode() only expects characters in the correct base64 alphabet' - ); - } - return $dest; - } - - /** - * Uses bitwise operators instead of table-lookups to turn 6-bit integers - * into 8-bit integers. - * - * Base64 character set: - * [A-Z] [a-z] [0-9] + / - * 0x41-0x5a, 0x61-0x7a, 0x30-0x39, 0x2b, 0x2f - * - * @param int $src - * @return int - */ - abstract protected static function decode6Bits($src); - - /** - * Uses bitwise operators instead of table-lookups to turn 8-bit integers - * into 6-bit integers. - * - * @param int $src - * @return string - */ - abstract protected static function encode6Bits($src); -} |