51 lines
1.1 KiB
PHP
51 lines
1.1 KiB
PHP
<?php
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// image Endpoint
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// This endpoint loads a shared image into a webpage
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function base64url_encode($data)
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{
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$b64 = base64_encode($data);
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if ($b64 === false) {
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return false;
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}
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$url = strtr($b64, '+/', '-_');
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return rtrim($url, '=');
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}
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function is_valid_base64($str){
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if (base64_decode($str, true) !== false){
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return true;
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} else {
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return false;
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}
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}
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?>
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<html>
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<head>
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<title>Image Proxy</title>
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<style>
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body { background-color: white; color:black; }
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</style>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
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<meta http-equiv="Pragma" content="no-cache" />
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<meta http-equiv="Expires" content="0" />
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</head>
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<body>
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<?php
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$source = $_SERVER['QUERY_STRING'];
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//handle Facebook
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if (strpos($source, "&fbclid")) {
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$source = str_replace("%3D", "=", $source);
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$stripFB = explode("&fbclid", $source);
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$source = $stripFB[0];
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}
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if (is_valid_base64($source))
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$isource = $source;
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else
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$isource = base64url_encode($source);
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echo '<img src="i.php?'. $isource . '">';
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?>
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</body>
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</html>
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