From d504b0a4cc1360db65a9088d23d95004caeb7853 Mon Sep 17 00:00:00 2001 From: Thomas Nilsen Date: Sun, 25 Nov 2018 17:06:03 +0100 Subject: [PATCH] Add php_idn lib to support IDN/punycode emails MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This external library adds functions to encode and decode email addresses using extended utf-8 character sets. Example examlpe@bånnibøtta.no The library is written as simple functions rather than a class. Original code at https://github.com/IgorVBelousov/php_idn --- libs/php_idn/LICENSE | 504 +++++++++++++++++++++++++++++++++++++++++ libs/php_idn/README.md | 31 +++ libs/php_idn/idna.php | 320 ++++++++++++++++++++++++++ 3 files changed, 855 insertions(+) create mode 100644 libs/php_idn/LICENSE create mode 100644 libs/php_idn/README.md create mode 100644 libs/php_idn/idna.php diff --git a/libs/php_idn/LICENSE b/libs/php_idn/LICENSE new file mode 100644 index 0000000..8000a6f --- /dev/null +++ b/libs/php_idn/LICENSE @@ -0,0 +1,504 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. 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See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 + USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random + Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/libs/php_idn/README.md b/libs/php_idn/README.md new file mode 100644 index 0000000..d1d368e --- /dev/null +++ b/libs/php_idn/README.md @@ -0,0 +1,31 @@ +PHP IDN Punycode +================ + +Encode and decode IDN Punycode if not exists internal php functions `idn_to_ascii` and `idn_to_utf8`. +Functions use algorithm by rfc 3492. + +[![Build Status](https://travis-ci.org/IgorVBelousov/php_idn.svg?branch=master)](https://travis-ci.org/IgorVBelousov/php_idn) + +**function EncodePunycodeIDN( $value )** string + +Encode UTF-8 domain name to IDN Punycode + +Parameters: + +string **$value** Domain name + +Returns: + +Encoded Domain name + +**function DecodePunycodeIDN( $value )** string + +Decode IDN Punycode to UTF-8 domain name + +Parameters: + +string **$value** Punycode + +Returns: + +Domain name in UTF-8 charset \ No newline at end of file diff --git a/libs/php_idn/idna.php b/libs/php_idn/idna.php new file mode 100644 index 0000000..bac2b63 --- /dev/null +++ b/libs/php_idn/idna.php @@ -0,0 +1,320 @@ + + * @copyright 2008 Nicolas Thouvenin + * @license http://opensource.org/licenses/LGPL-2.1 LGPL v2.1 + */ +function ordUTF8($c, $index = 0, &$bytes = null) + { + $len = strlen($c); + $bytes = 0; + if ($index >= $len) + return false; + $h = ord($c{$index}); + if ($h <= 0x7F) { + $bytes = 1; + return $h; + } + else if ($h < 0xC2) + return false; + else if ($h <= 0xDF && $index < $len - 1) { + $bytes = 2; + return ($h & 0x1F) << 6 | (ord($c{$index + 1}) & 0x3F); + } + else if ($h <= 0xEF && $index < $len - 2) { + $bytes = 3; + return ($h & 0x0F) << 12 | (ord($c{$index + 1}) & 0x3F) << 6 + | (ord($c{$index + 2}) & 0x3F); + } + else if ($h <= 0xF4 && $index < $len - 3) { + $bytes = 4; + return ($h & 0x0F) << 18 | (ord($c{$index + 1}) & 0x3F) << 12 + | (ord($c{$index + 2}) & 0x3F) << 6 + | (ord($c{$index + 3}) & 0x3F); + } + else + return false; + } + +/** + * Encode UTF-8 domain name to IDN Punycode + * + * @param string $value Domain name + * @return string Encoded Domain name + * + * @author Igor V Belousov + * @copyright 2013, 2015 Igor V Belousov + * @license http://opensource.org/licenses/LGPL-2.1 LGPL v2.1 + * @link http://belousovv.ru/myscript/phpIDN + */ +function EncodePunycodeIDN( $value ) + { + if ( function_exists( 'idn_to_ascii' ) ) { + return idn_to_ascii( $value ); + } + + /* search subdomains */ + $sub_domain = explode( '.', $value ); + if ( count( $sub_domain ) > 1 ) { + $sub_result = ''; + foreach ( $sub_domain as $sub_value ) { + $sub_result .= '.' . EncodePunycodeIDN( $sub_value ); + } + return substr( $sub_result, 1 ); + } + + /* http://tools.ietf.org/html/rfc3492#section-6.3 */ + $n = 0x80; + $delta = 0; + $bias = 72; + $output = array(); + + $input = array(); + $str = $value; + while ( mb_strlen( $str , 'UTF-8' ) > 0 ) + { + array_push( $input, mb_substr( $str, 0, 1, 'UTF-8' ) ); + $str = (version_compare(PHP_VERSION, '5.4.8','<'))?mb_substr( $str, 1, mb_strlen($str, 'UTF-8') , 'UTF-8' ):mb_substr( $str, 1, null, 'UTF-8' ); + } + + /* basic symbols */ + $basic = preg_grep( '/[\x00-\x7f]/', $input ); + $b = $basic; + + if ( $b == $input ) + { + return $value; + } + $b = count( $b ); + if ( $b > 0 ) { + $output = $basic; + /* add delimeter */ + $output[] = '-'; + } + unset($basic); + /* add prefix */ + array_unshift( $output, 'xn--' ); + + $input_len = count( $input ); + $h = $b; + + $ord_input = array(); + + while ( $h < $input_len ) { + $m = 0x10FFFF; + for ( $i = 0; $i < $input_len; ++$i ) + { + $ord_input[ $i ] = ordUtf8( $input[ $i ] ); + if ( ( $ord_input[ $i ] >= $n ) && ( $ord_input[ $i ] < $m ) ) + { + $m = $ord_input[ $i ]; + } + } + if ( ( $m - $n ) > ( 0x10FFFF / ( $h + 1 ) ) ) + { + return $value; + } + $delta += ( $m - $n ) * ( $h + 1 ); + $n = $m; + + for ( $i = 0; $i < $input_len; ++$i ) + { + $c = $ord_input[ $i ]; + if ( $c < $n ) + { + ++$delta; + if ( $delta == 0 ) + { + return $value; + } + } + if ( $c == $n ) + { + $q = $delta; + for ( $k = 36;; $k += 36 ) + { + if ( $k <= $bias ) + { + $t = 1; + } + elseif ( $k >= ( $bias + 26 ) ) + { + $t = 26; + } + else + { + $t = $k - $bias; + } + if ( $q < $t ) + { + break; + } + $tmp_int = $t + ( $q - $t ) % ( 36 - $t ); + $output[] = chr( ( $tmp_int + 22 + 75 * ( $tmp_int < 26 ) ) ); + $q = ( $q - $t ) / ( 36 - $t ); + } + + $output[] = chr( ( $q + 22 + 75 * ( $q < 26 ) ) ); + /* http://tools.ietf.org/html/rfc3492#section-6.1 */ + $delta = ( $h == $b ) ? $delta / 700 : $delta>>1; + + $delta += intval( $delta / ( $h + 1 ) ); + + $k2 = 0; + while ( $delta > 455 ) + { + $delta /= 35; + $k2 += 36; + } + $bias = intval( $k2 + 36 * $delta / ( $delta + 38 ) ); + /* end section-6.1 */ + $delta = 0; + ++$h; + } + } + ++$delta; + ++$n; + } + return implode( '', $output ); + } + +/** + * Decode IDN Punycode to UTF-8 domain name + * + * @param string $value Punycode + * @return string Domain name in UTF-8 charset + * + * @author Igor V Belousov + * @copyright 2013, 2015 Igor V Belousov + * @license http://opensource.org/licenses/LGPL-2.1 LGPL v2.1 + * @link http://belousovv.ru/myscript/phpIDN + */ +function DecodePunycodeIDN( $value ) + { + if ( function_exists( 'idn_to_utf8' ) ) { + return idn_to_utf8( $value ); + } + + /* search subdomains */ + $sub_domain = explode( '.', $value ); + if ( count( $sub_domain ) > 1 ) { + $sub_result = ''; + foreach ( $sub_domain as $sub_value ) { + $sub_result .= '.' . DecodePunycodeIDN( $sub_value ); + } + return substr( $sub_result, 1 ); + } + + /* search prefix */ + if ( substr( $value, 0, 4 ) != 'xn--' ) + { + return $value; + } + else + { + $bad_input = $value; + $value = substr( $value, 4 ); + } + + $n = 0x80; + $i = 0; + $bias = 72; + $output = array(); + + /* search delimeter */ + $d = strrpos( $value, '-' ); + + if ( $d > 0 ) { + for ( $j = 0; $j < $d; ++$j) { + $c = $value[ $j ]; + $output[] = $c; + if ( $c > 0x7F ) + { + return $bad_input; + } + } + ++$d; + } else { + $d = 0; + } + + while ($d < strlen( $value ) ) + { + $old_i = $i; + $w = 1; + + for ($k = 36;; $k += 36) + { + if ( $d == strlen( $value ) ) + { + return $bad_input; + } + $c = $value[ $d++ ]; + $c = ord( $c ); + + $digit = ( $c - 48 < 10 ) ? $c - 22 : + ( + ( $c - 65 < 26 ) ? $c - 65 : + ( + ( $c - 97 < 26 ) ? $c - 97 : 36 + ) + ); + if ( $digit > ( 0x10FFFF - $i ) / $w ) + { + return $bad_input; + } + $i += $digit * $w; + + if ( $k <= $bias ) + { + $t = 1; + } + elseif ( $k >= $bias + 26 ) + { + $t = 26; + } + else + { + $t = $k - $bias; + } + if ( $digit < $t ) { + break; + } + + $w *= 36 - $t; + + } + + $delta = $i - $old_i; + + /* http://tools.ietf.org/html/rfc3492#section-6.1 */ + $delta = ( $old_i == 0 ) ? $delta/700 : $delta>>1; + + $count_output_plus_one = count( $output ) + 1; + $delta += intval( $delta / $count_output_plus_one ); + + $k2 = 0; + while ( $delta > 455 ) + { + $delta /= 35; + $k2 += 36; + } + $bias = intval( $k2 + 36 * $delta / ( $delta + 38 ) ); + /* end section-6.1 */ + if ( $i / $count_output_plus_one > 0x10FFFF - $n ) + { + return $bad_input; + } + $n += intval( $i / $count_output_plus_one ); + $i %= $count_output_plus_one; + array_splice( $output, $i, 0, + html_entity_decode( '&#' . $n . ';', ENT_NOQUOTES, 'UTF-8' ) + ); + ++$i; + } + + return implode( '', $output ); + } +