59 lines
2.2 KiB
PHP
59 lines
2.2 KiB
PHP
<?php
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/*
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Plugin Name: Preview URL with QR Code
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Plugin URI: https://github.com/dennydai
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Description: Preview URLs before you're redirected there
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Version: 1.0
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Author: Denny Dai
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Author URI: https://dennydai.github.io
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*/
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// EDIT THIS
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// Character to add to a short URL to trigger the preview interruption
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define( 'OZH_PREVIEW_CHAR', '~' );
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// DO NO EDIT FURTHER
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// Handle failed loader request and check if there's a ~
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yourls_add_action( 'loader_failed', 'ozh_preview_loader_failed' );
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function ozh_preview_loader_failed( $args ) {
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$request = $args[0];
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$pattern = yourls_make_regexp_pattern( yourls_get_shorturl_charset() );
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if( preg_match( "@^([$pattern]+)".OZH_PREVIEW_CHAR."$@", $request, $matches ) ) {
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$keyword = isset( $matches[1] ) ? $matches[1] : '';
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$keyword = yourls_sanitize_keyword( $keyword );
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ozh_preview_show( $keyword );
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die();
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}
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}
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// Show the preview screen for a short URL
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function ozh_preview_show( $keyword ) {
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require_once( YOURLS_INC.'/functions-html.php' );
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yourls_html_head( 'preview', 'Short URL preview' );
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yourls_html_logo();
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$title = yourls_get_keyword_title( $keyword );
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$url = yourls_get_keyword_longurl( $keyword );
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$base = YOURLS_SITE;
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$char = OZH_PREVIEW_CHAR;
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$qrcode = 'data:image/png;base64,'.base64_encode(file_get_contents('http://chart.apis.google.com/chart?chs=200x200&cht=qr&chld=M&chl='.YOURLS_SITE.'/'.$keyword));
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echo <<<HTML
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<h2>Link Preview</h2>
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<p>You requested the short URL <strong><a href="$base/$keyword">$base/$keyword</a></strong></p>
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<p>This short URL points to:</p>
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<ul>
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<li>Long URL: <strong><a href="$base/$keyword">$url</a></strong></li>
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<li>Page title: <strong>$title</strong></li>
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<li>QR Code: <br><img src="$qrcode"></li>
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</ul>
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<p>If you still want to visit this link, please <strong><a href="$base/$keyword">click here</a></strong>.</p>
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<p>Thank you for using our shortening service.</p>
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HTML;
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yourls_html_footer();
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} |