mirror of
https://github.com/LBRYFoundation/lbry.com.git
synced 2025-08-23 17:47:26 +00:00
allow smaz-encoded emails
This commit is contained in:
Alex Grintsvayg
parent
a03ee2b445
commit
3c058f431f
3 changed files with 236 additions and 6 deletions
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@ -2,5 +2,4 @@
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define('ROOT_DIR', __DIR__);
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date_default_timezone_set('Etc/UTC');
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include ROOT_DIR . '/autoload.php';
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require ROOT_DIR . '/autoload.php';
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@ -38,7 +38,7 @@ class DownloadActions extends Actions
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public static function executeGet()
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{
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$email = Request::getParam('e');
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$email = static::getEmailParam();
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$user = [];
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if ($email)
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@ -147,7 +147,7 @@ class DownloadActions extends Actions
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public static function prepareSignupPartial(array $vars)
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{
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return $vars + [
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'defaultEmail' => Request::getParam('e'),
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'defaultEmail' => static::getEmailParam(),
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'allowInviteCode' => true,
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'referralCode' => Request::getParam('r', '')
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];
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@ -209,4 +209,24 @@ class DownloadActions extends Actions
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return OS::OS_WINDOWS;
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}
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}
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protected static function getEmailParam()
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{
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$email = Request::getParam('e');
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if (!$email)
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{
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$encoded = Request::getParam('ec');
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if ($encoded)
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{
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$email = Smaz::decode(Encoding::base64DecodeUrlsafe($encoded), Smaz::CODEBOOK_EMAIL);
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if (!filter_var($email, FILTER_VALIDATE_EMAIL))
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{
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$email = null;
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}
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}
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}
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return $email;
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}
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}
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211
lib/tools/Smaz.class.php
Normal file
211
lib/tools/Smaz.class.php
Normal file
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@ -0,0 +1,211 @@
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<?php
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/**
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* SMAZ - compression for very small strings
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*
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* https://github.com/zhenhao/smaz.php (PHP port of https://github.com/antirez/smaz)
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*
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* <pre>Smaz is a simple compression library for compressing very short
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* strings. General purpose compression libraries will build the state needed
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* for compressing data dynamically, in order to be able to compress every kind
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* of data. This is a very good idea, but not for a specific problem: compressing
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* small strings will not work.</pre>
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*/
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class Smaz
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{
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const CODEBOOK_DEFAULT = 'default';
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const CODEBOOK_EMAIL = 'email';
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const VERBATIM_CHAR = 254;
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const VERBATIM_STR = 255;
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protected static $encodeBooks = [];
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protected static $decodeBooks = [
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self::CODEBOOK_DEFAULT => [
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" ", "the", "e", "t", "a", "of", "o", "and", "i", "n", "s", "e ", "r", " th",
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" t", "in", "he", "th", "h", "he ", "to", "\r\n", "l", "s ", "d", " a", "an",
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"er", "c", " o", "d ", "on", " of", "re", "of ", "t ", ", ", "is", "u", "at",
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" ", "n ", "or", "which", "f", "m", "as", "it", "that", "\n", "was", "en",
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" ", " w", "es", " an", " i", "\r", "f ", "g", "p", "nd", " s", "nd ", "ed ",
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"w", "ed", "http://", "for", "te", "ing", "y ", "The", " c", "ti", "r ", "his",
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"st", " in", "ar", "nt", ",", " to", "y", "ng", " h", "with", "le", "al", "to ",
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"b", "ou", "be", "were", " b", "se", "o ", "ent", "ha", "ng ", "their", "\"",
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"hi", "from", " f", "in ", "de", "ion", "me", "v", ".", "ve", "all", "re ",
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"ri", "ro", "is ", "co", "f t", "are", "ea", ". ", "her", " m", "er ", " p",
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"es ", "by", "they", "di", "ra", "ic", "not", "s, ", "d t", "at ", "ce", "la",
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"h ", "ne", "as ", "tio", "on ", "n t", "io", "we", " a ", "om", ", a", "s o",
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"ur", "li", "ll", "ch", "had", "this", "e t", "g ", "e\r\n", " wh", "ere",
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" co", "e o", "a ", "us", " d", "ss", "\n\r\n", "\r\n\r", "=\"", " be", " e",
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"s a", "ma", "one", "t t", "or ", "but", "el", "so", "l ", "e s", "s,", "no",
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"ter", " wa", "iv", "ho", "e a", " r", "hat", "s t", "ns", "ch ", "wh", "tr",
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"ut", "/", "have", "ly ", "ta", " ha", " on", "tha", "-", " l", "ati", "en ",
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"pe", " re", "there", "ass", "si", " fo", "wa", "ec", "our", "who", "its", "z",
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"fo", "rs", ">", "ot", "un", "<", "im", "th ", "nc", "ate", "><", "ver", "ad",
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" we", "ly", "ee", " n", "id", " cl", "ac", "il", "</", "rt", " wi", "div",
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"e, ", " it", "whi", " ma", "ge", "x", "e c", "men", ".com"
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],
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self::CODEBOOK_EMAIL => [ // WARNING: only add to the end, or existing compressions will be messed up
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// single chars
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'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-', '_', '+', '.', '@',
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// common domains
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'@gmail', '@hotmail', '@yahoo', '@comcast', '@aol', '@msn', '@live', '@verizon', '@me', '@shaw', '@outlook', '@gmx',
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// common TLDs
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'.com', '.net', '.edu', '.org', '.ca', '.de', '.fr', '.org', '.au', '.ru',
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// top 100 two-letter combos (local part only)
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'an','er','ar','on','in','ma','le','en','el','ri','ch','re','ll','ha','ra','al','st','li','ne','te','la','at','is','he','ro','am',
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'es','or','th','ke','ic','nd','il','ie','be','da','de','na','mi','as','so','ng','co','ck','n.','sh','ca','se','nn','tt','ol','ni',
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'sa','ti','me','ac','to','ey','et','ea','ho','br','ns','ia','rt','ee','it','jo','lo','ta','e.','ka','ad','ja','ur','ba','im','nt',
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'ge','au','sc','mo','os','ss','vi','hi','ul','rd','em','rs','pa','ki','ve','us','wa','do','ga','ry','a.','rr',
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// top 50 three-letter combos (local part only)
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'and','son','ell','man','ill','cha','ste','mar','ris','ter','han','ann','ing','lle','the','lin','ich','che','lan','har','ber','all',
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'her','ton','ick','dan','lli','mat','ale','att','ard','an.','ric','ers','art','ran','ley','ani','ren','ine','ath','tin','sha','der',
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'car','nne','nic','ian','nie','dav','bit',
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// common four-letter combos (local part only)
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'chri','andr','john','matt','davi','drew','icha','stin','mich','nder','illi','elle','will','rian','bert',
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'ryan','anie','rick','alex','ster','nson','ande','coin',
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]
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];
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protected static function getEncodeBook($codebook)
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{
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if (!isset(static::$encodeBooks[$codebook]))
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{
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static::$encodeBooks[$codebook] = array_flip(static::getDecodeBook($codebook));
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}
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return static::$encodeBooks[$codebook];
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}
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protected static function getDecodeBook($codebook)
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{
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if (!static::$decodeBooks[$codebook])
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{
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throw new Exception('decodebook ' . $codebook . ' does not exist');
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}
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if (count(static::$decodeBooks[$codebook]) > static::VERBATIM_CHAR)
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{
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throw new Exception('decodebook ' . $codebook . ' must be at most ' . static::VERBATIM_CHAR . 'entries');
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}
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return static::$decodeBooks[$codebook];
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}
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/**
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* @param string $str
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* @param string $codebook
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*
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* @return string
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*/
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public static function encode($str, $codebook = self::CODEBOOK_DEFAULT)
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{
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$encodeBook = static::getEncodeBook($codebook);
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$inLen = strlen($str);
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$inIdx = 0;
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$output = '';
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$verbatim = '';
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$maxItemLen = max(array_map('strlen', array_keys($encodeBook)));
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while ($inIdx < $inLen)
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{
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$encode = false;
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for ($j = min($maxItemLen, $inLen - $inIdx); $j > 0; $j--)
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{
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$code = isset($encodeBook[substr($str, $inIdx, $j)]) ? $encodeBook[substr($str, $inIdx, $j)] : null;
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if ($code !== null)
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{
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// echo substr($str, $inIdx, $j) . " = $code\n";
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if (strlen($verbatim))
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{
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$output .= static::flushVerbatim($verbatim);
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$verbatim = '';
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}
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$output .= chr($code);
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$inIdx += $j;
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$encode = true;
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break;
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}
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}
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if (!$encode)
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{
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// echo "VERBATIM\n";
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$verbatim .= $str[$inIdx];
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$inIdx++;
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if (strlen($verbatim) == 255) // any longer, and we can't represent the length as a single char
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{
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$output .= static::flushVerbatim($verbatim);
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$verbatim = '';
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}
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}
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}
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if (strlen($verbatim))
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{
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$output .= static::flushVerbatim($verbatim);
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}
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return $output;
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}
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/**
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* @param string $str
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* @param string $codebook
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*
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* @return string
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*/
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public static function decode($str, $codebook = self::CODEBOOK_DEFAULT)
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{
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$decodeBook = static::getDecodeBook($codebook);
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$output = '';
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$i = 0;
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while ($i < strlen($str))
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{
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$code = ord($str[$i]);
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if ($code == static::VERBATIM_CHAR)
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{
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$output .= $str[$i + 1];
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$i += 2;
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}
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elseif ($code == static::VERBATIM_STR)
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{
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$len = ord($str[$i + 1]);
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$output .= substr($str, $i + 2, $len);
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$i += 2 + $len;
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}
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elseif (!isset($decodeBook[$code]))
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{
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return null; // decode error. throw exception?
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}
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else
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{
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$output .= $decodeBook[$code];
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$i++;
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}
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}
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return $output;
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}
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protected static function flushVerbatim($verbatim)
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{
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$output = '';
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if (!strlen($verbatim))
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{
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return $output;
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}
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if (strlen($verbatim) > 1)
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{
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$output .= chr(static::VERBATIM_STR);
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$output .= chr(strlen($verbatim));
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}
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else
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{
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$output .= chr(static::VERBATIM_CHAR);
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}
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$output .= $verbatim;
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return $output;
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}
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}
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