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-rw-r--r--srcs/wordpress/wp-includes/Requests/IDNAEncoder.php388
1 files changed, 0 insertions, 388 deletions
diff --git a/srcs/wordpress/wp-includes/Requests/IDNAEncoder.php b/srcs/wordpress/wp-includes/Requests/IDNAEncoder.php
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--- a/srcs/wordpress/wp-includes/Requests/IDNAEncoder.php
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-<?php
-
-/**
- * IDNA URL encoder
- *
- * Note: Not fully compliant, as nameprep does nothing yet.
- *
- * @package Requests
- * @subpackage Utilities
- * @see https://tools.ietf.org/html/rfc3490 IDNA specification
- * @see https://tools.ietf.org/html/rfc3492 Punycode/Bootstrap specification
- */
-class Requests_IDNAEncoder {
- /**
- * ACE prefix used for IDNA
- *
- * @see https://tools.ietf.org/html/rfc3490#section-5
- * @var string
- */
- const ACE_PREFIX = 'xn--';
-
- /**#@+
- * Bootstrap constant for Punycode
- *
- * @see https://tools.ietf.org/html/rfc3492#section-5
- * @var int
- */
- const BOOTSTRAP_BASE = 36;
- const BOOTSTRAP_TMIN = 1;
- const BOOTSTRAP_TMAX = 26;
- const BOOTSTRAP_SKEW = 38;
- const BOOTSTRAP_DAMP = 700;
- const BOOTSTRAP_INITIAL_BIAS = 72;
- const BOOTSTRAP_INITIAL_N = 128;
- /**#@-*/
-
- /**
- * Encode a hostname using Punycode
- *
- * @param string $string Hostname
- * @return string Punycode-encoded hostname
- */
- public static function encode($string) {
- $parts = explode('.', $string);
- foreach ($parts as &$part) {
- $part = self::to_ascii($part);
- }
- return implode('.', $parts);
- }
-
- /**
- * Convert a UTF-8 string to an ASCII string using Punycode
- *
- * @throws Requests_Exception Provided string longer than 64 ASCII characters (`idna.provided_too_long`)
- * @throws Requests_Exception Prepared string longer than 64 ASCII characters (`idna.prepared_too_long`)
- * @throws Requests_Exception Provided string already begins with xn-- (`idna.provided_is_prefixed`)
- * @throws Requests_Exception Encoded string longer than 64 ASCII characters (`idna.encoded_too_long`)
- *
- * @param string $string ASCII or UTF-8 string (max length 64 characters)
- * @return string ASCII string
- */
- public static function to_ascii($string) {
- // Step 1: Check if the string is already ASCII
- if (self::is_ascii($string)) {
- // Skip to step 7
- if (strlen($string) < 64) {
- return $string;
- }
-
- throw new Requests_Exception('Provided string is too long', 'idna.provided_too_long', $string);
- }
-
- // Step 2: nameprep
- $string = self::nameprep($string);
-
- // Step 3: UseSTD3ASCIIRules is false, continue
- // Step 4: Check if it's ASCII now
- if (self::is_ascii($string)) {
- // Skip to step 7
- if (strlen($string) < 64) {
- return $string;
- }
-
- throw new Requests_Exception('Prepared string is too long', 'idna.prepared_too_long', $string);
- }
-
- // Step 5: Check ACE prefix
- if (strpos($string, self::ACE_PREFIX) === 0) {
- throw new Requests_Exception('Provided string begins with ACE prefix', 'idna.provided_is_prefixed', $string);
- }
-
- // Step 6: Encode with Punycode
- $string = self::punycode_encode($string);
-
- // Step 7: Prepend ACE prefix
- $string = self::ACE_PREFIX . $string;
-
- // Step 8: Check size
- if (strlen($string) < 64) {
- return $string;
- }
-
- throw new Requests_Exception('Encoded string is too long', 'idna.encoded_too_long', $string);
- }
-
- /**
- * Check whether a given string contains only ASCII characters
- *
- * @internal (Testing found regex was the fastest implementation)
- *
- * @param string $string
- * @return bool Is the string ASCII-only?
- */
- protected static function is_ascii($string) {
- return (preg_match('/(?:[^\x00-\x7F])/', $string) !== 1);
- }
-
- /**
- * Prepare a string for use as an IDNA name
- *
- * @todo Implement this based on RFC 3491 and the newer 5891
- * @param string $string
- * @return string Prepared string
- */
- protected static function nameprep($string) {
- return $string;
- }
-
- /**
- * Convert a UTF-8 string to a UCS-4 codepoint array
- *
- * Based on Requests_IRI::replace_invalid_with_pct_encoding()
- *
- * @throws Requests_Exception Invalid UTF-8 codepoint (`idna.invalidcodepoint`)
- * @param string $input
- * @return array Unicode code points
- */
- protected static function utf8_to_codepoints($input) {
- $codepoints = array();
-
- // Get number of bytes
- $strlen = strlen($input);
-
- for ($position = 0; $position < $strlen; $position++) {
- $value = ord($input[$position]);
-
- // One byte sequence:
- if ((~$value & 0x80) === 0x80) {
- $character = $value;
- $length = 1;
- $remaining = 0;
- }
- // Two byte sequence:
- elseif (($value & 0xE0) === 0xC0) {
- $character = ($value & 0x1F) << 6;
- $length = 2;
- $remaining = 1;
- }
- // Three byte sequence:
- elseif (($value & 0xF0) === 0xE0) {
- $character = ($value & 0x0F) << 12;
- $length = 3;
- $remaining = 2;
- }
- // Four byte sequence:
- elseif (($value & 0xF8) === 0xF0) {
- $character = ($value & 0x07) << 18;
- $length = 4;
- $remaining = 3;
- }
- // Invalid byte:
- else {
- throw new Requests_Exception('Invalid Unicode codepoint', 'idna.invalidcodepoint', $value);
- }
-
- if ($remaining > 0) {
- if ($position + $length > $strlen) {
- throw new Requests_Exception('Invalid Unicode codepoint', 'idna.invalidcodepoint', $character);
- }
- for ($position++; $remaining > 0; $position++) {
- $value = ord($input[$position]);
-
- // If it is invalid, count the sequence as invalid and reprocess the current byte:
- if (($value & 0xC0) !== 0x80) {
- throw new Requests_Exception('Invalid Unicode codepoint', 'idna.invalidcodepoint', $character);
- }
-
- $character |= ($value & 0x3F) << (--$remaining * 6);
- }
- $position--;
- }
-
- if (
- // Non-shortest form sequences are invalid
- $length > 1 && $character <= 0x7F
- || $length > 2 && $character <= 0x7FF
- || $length > 3 && $character <= 0xFFFF
- // Outside of range of ucschar codepoints
- // Noncharacters
- || ($character & 0xFFFE) === 0xFFFE
- || $character >= 0xFDD0 && $character <= 0xFDEF
- || (
- // Everything else not in ucschar
- $character > 0xD7FF && $character < 0xF900
- || $character < 0x20
- || $character > 0x7E && $character < 0xA0
- || $character > 0xEFFFD
- )
- ) {
- throw new Requests_Exception('Invalid Unicode codepoint', 'idna.invalidcodepoint', $character);
- }
-
- $codepoints[] = $character;
- }
-
- return $codepoints;
- }
-
- /**
- * RFC3492-compliant encoder
- *
- * @internal Pseudo-code from Section 6.3 is commented with "#" next to relevant code
- * @throws Requests_Exception On character outside of the domain (never happens with Punycode) (`idna.character_outside_domain`)
- *
- * @param string $input UTF-8 encoded string to encode
- * @return string Punycode-encoded string
- */
- public static function punycode_encode($input) {
- $output = '';
-# let n = initial_n
- $n = self::BOOTSTRAP_INITIAL_N;
-# let delta = 0
- $delta = 0;
-# let bias = initial_bias
- $bias = self::BOOTSTRAP_INITIAL_BIAS;
-# let h = b = the number of basic code points in the input
- $h = $b = 0; // see loop
-# copy them to the output in order
- $codepoints = self::utf8_to_codepoints($input);
- $extended = array();
-
- foreach ($codepoints as $char) {
- if ($char < 128) {
- // Character is valid ASCII
- // TODO: this should also check if it's valid for a URL
- $output .= chr($char);
- $h++;
- }
- // Check if the character is non-ASCII, but below initial n
- // This never occurs for Punycode, so ignore in coverage
- // @codeCoverageIgnoreStart
- elseif ($char < $n) {
- throw new Requests_Exception('Invalid character', 'idna.character_outside_domain', $char);
- }
- // @codeCoverageIgnoreEnd
- else {
- $extended[$char] = true;
- }
- }
- $extended = array_keys($extended);
- sort($extended);
- $b = $h;
-# [copy them] followed by a delimiter if b > 0
- if (strlen($output) > 0) {
- $output .= '-';
- }
-# {if the input contains a non-basic code point < n then fail}
-# while h < length(input) do begin
- while ($h < count($codepoints)) {
-# let m = the minimum code point >= n in the input
- $m = array_shift($extended);
- //printf('next code point to insert is %s' . PHP_EOL, dechex($m));
-# let delta = delta + (m - n) * (h + 1), fail on overflow
- $delta += ($m - $n) * ($h + 1);
-# let n = m
- $n = $m;
-# for each code point c in the input (in order) do begin
- for ($num = 0; $num < count($codepoints); $num++) {
- $c = $codepoints[$num];
-# if c < n then increment delta, fail on overflow
- if ($c < $n) {
- $delta++;
- }
-# if c == n then begin
- elseif ($c === $n) {
-# let q = delta
- $q = $delta;
-# for k = base to infinity in steps of base do begin
- for ($k = self::BOOTSTRAP_BASE; ; $k += self::BOOTSTRAP_BASE) {
-# let t = tmin if k <= bias {+ tmin}, or
-# tmax if k >= bias + tmax, or k - bias otherwise
- if ($k <= ($bias + self::BOOTSTRAP_TMIN)) {
- $t = self::BOOTSTRAP_TMIN;
- }
- elseif ($k >= ($bias + self::BOOTSTRAP_TMAX)) {
- $t = self::BOOTSTRAP_TMAX;
- }
- else {
- $t = $k - $bias;
- }
-# if q < t then break
- if ($q < $t) {
- break;
- }
-# output the code point for digit t + ((q - t) mod (base - t))
- $digit = $t + (($q - $t) % (self::BOOTSTRAP_BASE - $t));
- $output .= self::digit_to_char($digit);
-# let q = (q - t) div (base - t)
- $q = floor(($q - $t) / (self::BOOTSTRAP_BASE - $t));
-# end
- }
-# output the code point for digit q
- $output .= self::digit_to_char($q);
-# let bias = adapt(delta, h + 1, test h equals b?)
- $bias = self::adapt($delta, $h + 1, $h === $b);
-# let delta = 0
- $delta = 0;
-# increment h
- $h++;
-# end
- }
-# end
- }
-# increment delta and n
- $delta++;
- $n++;
-# end
- }
-
- return $output;
- }
-
- /**
- * Convert a digit to its respective character
- *
- * @see https://tools.ietf.org/html/rfc3492#section-5
- * @throws Requests_Exception On invalid digit (`idna.invalid_digit`)
- *
- * @param int $digit Digit in the range 0-35
- * @return string Single character corresponding to digit
- */
- protected static function digit_to_char($digit) {
- // @codeCoverageIgnoreStart
- // As far as I know, this never happens, but still good to be sure.
- if ($digit < 0 || $digit > 35) {
- throw new Requests_Exception(sprintf('Invalid digit %d', $digit), 'idna.invalid_digit', $digit);
- }
- // @codeCoverageIgnoreEnd
- $digits = 'abcdefghijklmnopqrstuvwxyz0123456789';
- return substr($digits, $digit, 1);
- }
-
- /**
- * Adapt the bias
- *
- * @see https://tools.ietf.org/html/rfc3492#section-6.1
- * @param int $delta
- * @param int $numpoints
- * @param bool $firsttime
- * @return int New bias
- */
- protected static function adapt($delta, $numpoints, $firsttime) {
-# function adapt(delta,numpoints,firsttime):
-# if firsttime then let delta = delta div damp
- if ($firsttime) {
- $delta = floor($delta / self::BOOTSTRAP_DAMP);
- }
-# else let delta = delta div 2
- else {
- $delta = floor($delta / 2);
- }
-# let delta = delta + (delta div numpoints)
- $delta += floor($delta / $numpoints);
-# let k = 0
- $k = 0;
-# while delta > ((base - tmin) * tmax) div 2 do begin
- $max = floor(((self::BOOTSTRAP_BASE - self::BOOTSTRAP_TMIN) * self::BOOTSTRAP_TMAX) / 2);
- while ($delta > $max) {
-# let delta = delta div (base - tmin)
- $delta = floor($delta / (self::BOOTSTRAP_BASE - self::BOOTSTRAP_TMIN));
-# let k = k + base
- $k += self::BOOTSTRAP_BASE;
-# end
- }
-# return k + (((base - tmin + 1) * delta) div (delta + skew))
- return $k + floor(((self::BOOTSTRAP_BASE - self::BOOTSTRAP_TMIN + 1) * $delta) / ($delta + self::BOOTSTRAP_SKEW));
- }
-} \ No newline at end of file
generated by cgit (git 2.34.1) at 2026-05-16 09:42:10 +0000