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<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014 - 2018, British Columbia Institute of Technology * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/) * @copyright Copyright (c) 2014 - 2018, British Columbia Institute of Technology (http://bcit.ca/) * @license http://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 1.0.0 * @filesource */ defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter URL Helpers * * @package CodeIgniter * @subpackage Helpers * @category Helpers * @author EllisLab Dev Team * @link https://codeigniter.com/user_guide/helpers/url_helper.html */ // ------------------------------------------------------------------------ if ( ! function_exists('site_url')) { /** * Site URL * * Create a local URL based on your basepath. Segments can be passed via the * first parameter either as a string or an array. * * @param string $uri * @param string $protocol * @return string */ function site_url($uri = '', $protocol = NULL) { return get_instance()->config->site_url($uri, $protocol); } } // ------------------------------------------------------------------------ if ( ! function_exists('base_url')) { /** * Base URL * * Create a local URL based on your basepath. * Segments can be passed in as a string or an array, same as site_url * or a URL to a file can be passed in, e.g. to an image file. * * @param string $uri * @param string $protocol * @return string */ function base_url($uri = '', $protocol = NULL) { return get_instance()->config->base_url($uri, $protocol); } } // ------------------------------------------------------------------------ if ( ! function_exists('current_url')) { /** * Current URL * * Returns the full URL (including segments) of the page where this * function is placed * * @return string */ function current_url() { $CI =& get_instance(); return $CI->config->site_url($CI->uri->uri_string()); } } // ------------------------------------------------------------------------ if ( ! function_exists('uri_string')) { /** * URL String * * Returns the URI segments. * * @return string */ function uri_string() { return get_instance()->uri->uri_string(); } } // ------------------------------------------------------------------------ if ( ! function_exists('index_page')) { /** * Index page * * Returns the "index_page" from your config file * * @return string */ function index_page() { return get_instance()->config->item('index_page'); } } // ------------------------------------------------------------------------ if ( ! function_exists('anchor')) { /** * Anchor Link * * Creates an anchor based on the local URL. * * @param string the URL * @param string the link title * @param mixed any attributes * @return string */ function anchor($uri = '', $title = '', $attributes = '') { $title = (string) $title; $site_url = is_array($uri) ? site_url($uri) : (preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri)); if ($title === '') { $title = $site_url; } if ($attributes !== '') { $attributes = _stringify_attributes($attributes); } return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>'; } } // ------------------------------------------------------------------------ if ( ! function_exists('anchor_popup')) { /** * Anchor Link - Pop-up version * * Creates an anchor based on the local URL. The link * opens a new window based on the attributes specified. * * @param string the URL * @param string the link title * @param mixed any attributes * @return string */ function anchor_popup($uri = '', $title = '', $attributes = FALSE) { $title = (string) $title; $site_url = preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri); if ($title === '') { $title = $site_url; } if ($attributes === FALSE) { return '<a href="'.$site_url.'" onclick="window.open(\''.$site_url."', '_blank'); return false;\">".$title.'</a>'; } if ( ! is_array($attributes)) { $attributes = array($attributes); // Ref: http://www.w3schools.com/jsref/met_win_open.asp $window_name = '_blank'; } elseif ( ! empty($attributes['window_name'])) { $window_name = $attributes['window_name']; unset($attributes['window_name']); } else { $window_name = '_blank'; } foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'menubar' => 'no', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0') as $key => $val) { $atts[$key] = isset($attributes[$key]) ? $attributes[$key] : $val; unset($attributes[$key]); } $attributes = _stringify_attributes($attributes); return '<a href="'.$site_url .'" onclick="window.open(\''.$site_url."', '".$window_name."', '"._stringify_attributes($atts, TRUE)."'); return false;\"" .$attributes.'>'.$title.'</a>'; } } // ------------------------------------------------------------------------ if ( ! function_exists('mailto')) { /** * Mailto Link * * @param string the email address * @param string the link title * @param mixed any attributes * @return string */ function mailto($email, $title = '', $attributes = '') { $title = (string) $title; if ($title === '') { $title = $email; } return '<a href="mailto:'.$email.'"'._stringify_attributes($attributes).'>'.$title.'</a>'; } } // ------------------------------------------------------------------------ if ( ! function_exists('safe_mailto')) { /** * Encoded Mailto Link * * Create a spam-protected mailto link written in Javascript * * @param string the email address * @param string the link title * @param mixed any attributes * @return string */ function safe_mailto($email, $title = '', $attributes = '') { $title = (string) $title; if ($title === '') { $title = $email; } $x = str_split('<a href="mailto:', 1); for ($i = 0, $l = strlen($email); $i < $l; $i++) { $x[] = '|'.ord($email[$i]); } $x[] = '"'; if ($attributes !== '') { if (is_array($attributes)) { foreach ($attributes as $key => $val) { $x[] = ' '.$key.'="'; for ($i = 0, $l = strlen($val); $i < $l; $i++) { $x[] = '|'.ord($val[$i]); } $x[] = '"'; } } else { for ($i = 0, $l = strlen($attributes); $i < $l; $i++) { $x[] = $attributes[$i]; } } } $x[] = '>'; $temp = array(); for ($i = 0, $l = strlen($title); $i < $l; $i++) { $ordinal = ord($title[$i]); if ($ordinal < 128) { $x[] = '|'.$ordinal; } else { if (count($temp) === 0) { $count = ($ordinal < 224) ? 2 : 3; } $temp[] = $ordinal; if (count($temp) === $count) { $number = ($count === 3) ? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64) : (($temp[0] % 32) * 64) + ($temp[1] % 64); $x[] = '|'.$number; $count = 1; $temp = array(); } } } $x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>'; $x = array_reverse($x); $output = "<script type=\"text/javascript\">\n" ."\t//<![CDATA[\n" ."\tvar l=new Array();\n"; for ($i = 0, $c = count($x); $i < $c; $i++) { $output .= "\tl[".$i."] = '".$x[$i]."';\n"; } $output .= "\n\tfor (var i = l.length-1; i >= 0; i=i-1) {\n" ."\t\tif (l[i].substring(0, 1) === '|') document.write(\"&#\"+unescape(l[i].substring(1))+\";\");\n" ."\t\telse document.write(unescape(l[i]));\n" ."\t}\n" ."\t//]]>\n" .'</script>'; return $output; } } // ------------------------------------------------------------------------ if ( ! function_exists('auto_link')) { /** * Auto-linker * * Automatically links URL and Email addresses. * Note: There's a bit of extra code here to deal with * URLs or emails that end in a period. We'll strip these * off and add them after the link. * * @param string the string * @param string the type: email, url, or both * @param bool whether to create pop-up links * @return string */ function auto_link($str, $type = 'both', $popup = FALSE) { // Find and replace any URLs. if ($type !== 'email' && preg_match_all('#(\w*://|www\.)[a-z0-9]+(-+[a-z0-9]+)*(\.[a-z0-9]+(-+[a-z0-9]+)*)+(/([^\s()<>;]+\w)?/?)?#i', $str, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) { // Set our target HTML if using popup links. $target = ($popup) ? ' target="_blank" rel="noopener"' : ''; // We process the links in reverse order (last -> first) so that // the returned string offsets from preg_match_all() are not // moved as we add more HTML. foreach (array_reverse($matches) as $match) { // $match[0] is the matched string/link // $match[1] is either a protocol prefix or 'www.' // // With PREG_OFFSET_CAPTURE, both of the above is an array, // where the actual value is held in [0] and its offset at the [1] index. $a = '<a href="'.(strpos($match[1][0], '/') ? '' : 'http://').$match[0][0].'"'.$target.'>'.$match[0][0].'</a>'; $str = substr_replace($str, $a, $match[0][1], strlen($match[0][0])); } } // Find and replace any emails. if ($type !== 'url' && preg_match_all('#([\w\.\-\+]+@[a-z0-9\-]+\.[a-z0-9\-\.]+[^[:punct:]\s])#i', $str, $matches, PREG_OFFSET_CAPTURE)) { foreach (array_reverse($matches[0]) as $match) { if (filter_var($match[0], FILTER_VALIDATE_EMAIL) !== FALSE) { $str = substr_replace($str, safe_mailto($match[0]), $match[1], strlen($match[0])); } } } return $str; } } // ------------------------------------------------------------------------ if ( ! function_exists('prep_url')) { /** * Prep URL * * Simply adds the http:// part if no scheme is included * * @param string the URL * @return string */ function prep_url($str = '') { if ($str === 'http://' OR $str === '') { return ''; } $url = parse_url($str); if ( ! $url OR ! isset($url['scheme'])) { return 'http://'.$str; } return $str; } } // ------------------------------------------------------------------------ if ( ! function_exists('url_title')) { /** * Create URL Title * * Takes a "title" string as input and creates a * human-friendly URL string with a "separator" string * as the word separator. * * @todo Remove old 'dash' and 'underscore' usage in 3.1+. * @param string $str Input string * @param string $separator Word separator * (usually '-' or '_') * @param bool $lowercase Whether to transform the output string to lowercase * @return string */ function url_title($str, $separator = '-', $lowercase = FALSE) { if ($separator === 'dash') { $separator = '-'; } elseif ($separator === 'underscore') { $separator = '_'; } $q_separator = preg_quote($separator, '#'); $trans = array( '&.+?;' => '', '[^\w\d _-]' => '', '\s+' => $separator, '('.$q_separator.')+' => $separator ); $str = strip_tags($str); foreach ($trans as $key => $val) { $str = preg_replace('#'.$key.'#i'.(UTF8_ENABLED ? 'u' : ''), $val, $str); } if ($lowercase === TRUE) { $str = strtolower($str); } return trim(trim($str, $separator)); } } // ------------------------------------------------------------------------ if ( ! function_exists('redirect')) { /** * Header Redirect * * Header redirect in two flavors * For very fine grained control over headers, you could use the Output * Library's set_header() function. * * @param string $uri URL * @param string $method Redirect method * 'auto', 'location' or 'refresh' * @param int $code HTTP Response status code * @return void */ function redirect($uri = '', $method = 'auto', $code = NULL) { if ( ! preg_match('#^(\w+:)?//#i', $uri)) { $uri = site_url($uri); } // IIS environment likely? Use 'refresh' for better compatibility if ($method === 'auto' && isset($_SERVER['SERVER_SOFTWARE']) && strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== FALSE) { $method = 'refresh'; } elseif ($method !== 'refresh' && (empty($code) OR ! is_numeric($code))) { if (isset($_SERVER['SERVER_PROTOCOL'], $_SERVER['REQUEST_METHOD']) && $_SERVER['SERVER_PROTOCOL'] === 'HTTP/1.1') { $code = ($_SERVER['REQUEST_METHOD'] !== 'GET') ? 303 // reference: http://en.wikipedia.org/wiki/Post/Redirect/Get : 307; } else { $code = 302; } } switch ($method) { case 'refresh': header('Refresh:0;url='.$uri); break; default: header('Location: '.$uri, TRUE, $code); break; } exit; } }