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af_zz_imgproxy: show GD-based (if possible) error message on proxy failure

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This commit is contained in:
Andrew Dolgov 2017-02-13 15:25:52 +03:00
parent 4a23031fcd
commit bf6398650a
1 changed files with 32 additions and 1 deletions
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33
plugins/af_zz_imgproxy/init.php
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@ -63,7 +63,7 @@ class Af_Zz_ImgProxy extends Plugin {
readfile($local_filename);
} else {
$data = fetch_file_contents(array("url" => $url));
$data = fetch_file_contents(array("url" => $url, "useragent" => "Mozilla/5.0"));
if ($data) {
if (file_put_contents($local_filename, $data)) {
@ -72,6 +72,37 @@ class Af_Zz_ImgProxy extends Plugin {
}
print $data;
} else {
global $fetch_last_error;
global $fetch_last_error_code;
global $fetch_last_error_content;
if (function_exists("imagecreate")) {
$img = imagecreate(400, 75);
$bg = imagecolorallocate($img, 255, 255, 255);
$textcolor = imagecolorallocate($img, 255, 0, 0);
imagerectangle($img, 0, 0, 400-1, 75-1, $textcolor);
imagestring($img, 5, 5, 5, "Proxy request failed", $textcolor);
imagestring($img, 5, 5, 30, $url, $textcolor);
imagestring($img, 5, 5, 55, "HTTP Code: $fetch_last_error_code", $textcolor);
header("Content-type: image/png");
print imagepng($img);
imagedestroy($img);
} else {
header("Content-type: text/html");
http_response_code(400);
print "<h1>Proxy request failed.</h1>";
print "<p>Fetch error $fetch_last_error ($fetch_last_error_code)</p>";
print "<p>URL: $url</p>";
print "<textarea cols='80' rows='25'>" . htmlspecialchars($fetch_last_error_content) . "</textarea>";
}
}
}
}