64bc92e3ac
prevents 'PHP Fatal error: Call to undefined function sanitizeLink() in Shaarli/application/LinkDB.php on line 255' in tests
72 lines
1.7 KiB
PHP
72 lines
1.7 KiB
PHP
<?php
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/**
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* Shaarli utilities
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*/
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/**
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* Returns the small hash of a string, using RFC 4648 base64url format
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*
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* Small hashes:
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* - are unique (well, as unique as crc32, at last)
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* - are always 6 characters long.
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* - only use the following characters: a-z A-Z 0-9 - _ @
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* - are NOT cryptographically secure (they CAN be forged)
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*
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* In Shaarli, they are used as a tinyurl-like link to individual entries,
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* e.g. smallHash('20111006_131924') --> yZH23w
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*/
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function smallHash($text)
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{
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$t = rtrim(base64_encode(hash('crc32', $text, true)), '=');
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return strtr($t, '+/', '-_');
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}
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/**
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* Tells if a string start with a substring
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*/
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function startsWith($haystack, $needle, $case=true)
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{
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if ($case) {
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return (strcmp(substr($haystack, 0, strlen($needle)), $needle) === 0);
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}
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return (strcasecmp(substr($haystack, 0, strlen($needle)), $needle) === 0);
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}
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/**
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* Tells if a string ends with a substring
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*/
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function endsWith($haystack, $needle, $case=true)
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{
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if ($case) {
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return (strcmp(substr($haystack, strlen($haystack) - strlen($needle)), $needle) === 0);
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}
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return (strcasecmp(substr($haystack, strlen($haystack) - strlen($needle)), $needle) === 0);
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}
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/**
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* Same as nl2br(), but escapes < and >
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*/
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function nl2br_escaped($html)
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{
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return str_replace('>','>',str_replace('<','<',nl2br($html)));
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}
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/**
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* htmlspecialchars wrapper
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*/
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function escape($str)
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{
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return htmlspecialchars($str, ENT_COMPAT, 'UTF-8', false);
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}
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/**
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* Link sanitization before templating
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*/
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function sanitizeLink(&$link)
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{
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$link['url'] = escape($link['url']); // useful?
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$link['title'] = escape($link['title']);
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$link['description'] = escape($link['description']);
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$link['tags'] = escape($link['tags']);
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}
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?>
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