From 15b450b9405529ae943bb7761e76b7adc5cda8e6 Mon Sep 17 00:00:00 2001
From: Christian Schneider
Date: Mon, 2 Dec 2024 12:29:58 +0100
Subject: Revert "use CURLOPT_MAXFILESIZE now that we have current curl"

This reverts commit 1c657c2264c17dc2980bbce2f63ddad7546e96d5.
---
 it_url.class | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

(limited to 'it_url.class')

diff --git a/it_url.class b/it_url.class
index cfeaa1d..8ac71ae 100644
--- a/it_url.class
+++ b/it_url.class
@@ -261,9 +261,6 @@ static function curl_opts($p=array())
 	if (isset($p['accept_encoding']))
 		$add += [CURLOPT_ENCODING => $p['accept_encoding']]; # NOTE: the curl library renamed the option to CURLOPT_ACCEPT_ENCODING, in php both are possible, CURLOPT_ENCODING is documented
 
-	if (isset($p['maxlength']))
-		$add += [CURLOPT_MAXFILESIZE => $p['maxlength']];
-
 	return $add + [
 		CURLOPT_HEADER => false,
 		CURLOPT_RETURNTRANSFER => true,
@@ -317,6 +314,20 @@ function request($p=array())
 		curl_setopt($curl, CURLOPT_URL, $url->url);
 	}
 
+
+	// FIXME 2025-01 NG just use CURLOPT_MAXFILESIZE if we have curl 8.4
+	$content = "";
+	if ($p['maxlength'] && !$p['writefunction'])
+	{
+		$opts[CURLOPT_WRITEFUNCTION] = function ($dummy, $data) use ($p, &$content) {
+			static $space;
+			$write = min($space ??= $p['maxlength'], strlen($data));
+			$content .= substr($data, 0, $write);
+			$space -= $write;
+			return $write;
+		};
+	}
+
 	$opts[CURLOPT_HEADERFUNCTION] = function ($dummy, $data) use (&$header) {
 		$header .= $data;
 		return strlen($data);
@@ -324,12 +335,13 @@ function request($p=array())
 
 	curl_setopt_array($curl, $opts);
 
-	$body = $origbody = curl_exec($curl);
+	$got = curl_exec($curl);
+	$body = $origbody = $p['maxlength'] && $got ? $content : $got;
 
 	$this->curlinfo = curl_getinfo($curl);
 	EDC('curlinfo', $this->curlinfo);
 
-	if ($body !== false || curl_errno($curl) == 63)
+	if ($body !== false || curl_errno($curl) == 23)
 	{
 		$url->header = array_slice(explode("\r\n\r\n", trim($header)), -1)[0] . "\r\n\r\n";
 		$url->data = $body;
@@ -337,7 +349,7 @@ function request($p=array())
 		$url->parse_http_header($url->header);
 
 		# Change result status for content longer than maxlength to 204 as we do not return partial data but still want to indicate success e.g. for is_reachable
-		if ($p['maxlength'] && $url->status == 200 && !$body)
+		if ($p['maxlength'] && $url->status == 200 && strlen($content) && !$body)
 			$url->status = $this->result = 204;
 
 		if ($p['filemtime'] && ($url->status == 304))
-- 
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