88 lines
2.6 KiB
PHP
88 lines
2.6 KiB
PHP
<?php
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/**
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* Converts an array-represented URL to a string
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*
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* Source: http://php.net/manual/en/function.parse-url.php#106731
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*
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* @see http://php.net/manual/en/function.parse-url.php
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*
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* @param array $parsedUrl an array-represented URL
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*
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* @return string the string representation of the URL
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*/
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function unparse_url($parsedUrl)
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{
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$scheme = isset($parsedUrl['scheme']) ? $parsedUrl['scheme'].'://' : '';
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$host = isset($parsedUrl['host']) ? $parsedUrl['host'] : '';
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$port = isset($parsedUrl['port']) ? ':'.$parsedUrl['port'] : '';
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$user = isset($parsedUrl['user']) ? $parsedUrl['user'] : '';
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$pass = isset($parsedUrl['pass']) ? ':'.$parsedUrl['pass'] : '';
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$pass = ($user || $pass) ? "$pass@" : '';
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$path = isset($parsedUrl['path']) ? $parsedUrl['path'] : '';
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$query = isset($parsedUrl['query']) ? '?'.$parsedUrl['query'] : '';
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$fragment = isset($parsedUrl['fragment']) ? '#'.$parsedUrl['fragment'] : '';
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return "$scheme$user$pass$host$port$path$query$fragment";
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}
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/**
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* Removes undesired query parameters and fragments
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*
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* @param string url Url to be cleaned
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*
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* @return string the string representation of this URL after cleanup
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*/
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function cleanup_url($url)
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{
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$obj_url = new \Shaarli\Http\Url($url);
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return $obj_url->cleanup();
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}
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/**
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* Get URL scheme.
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*
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* @param string url Url for which the scheme is requested
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*
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* @return mixed the URL scheme or false if none is provided.
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*/
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function get_url_scheme($url)
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{
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$obj_url = new \Shaarli\Http\Url($url);
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return $obj_url->getScheme();
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}
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/**
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* Adds a trailing slash at the end of URL if necessary.
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*
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* @param string $url URL to check/edit.
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*
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* @return string $url URL with a end trailing slash.
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*/
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function add_trailing_slash($url)
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{
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return $url . (!endsWith($url, '/') ? '/' : '');
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}
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/**
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* Replace not whitelisted protocols by 'http://' from given URL.
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*
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* @param string $url URL to clean
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* @param array $protocols List of allowed protocols (aside from http(s)).
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*
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* @return string URL with allowed protocol
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*/
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function whitelist_protocols($url, $protocols)
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{
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if (startsWith($url, '?') || startsWith($url, '/')) {
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return $url;
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}
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$protocols = array_merge(['http', 'https'], $protocols);
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$protocol = preg_match('#^(\w+):/?/?#', $url, $match);
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// Protocol not allowed: we remove it and replace it with http
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if ($protocol === 1 && ! in_array($match[1], $protocols)) {
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$url = str_replace($match[0], 'http://', $url);
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} elseif ($protocol !== 1) {
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$url = 'http://' . $url;
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}
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return $url;
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}
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