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-rw-r--r--application/LinkUtils.php17
1 files changed, 13 insertions, 4 deletions
diff --git a/application/LinkUtils.php b/application/LinkUtils.php
index 3705f7e9..4df5c0ca 100644
--- a/application/LinkUtils.php
+++ b/application/LinkUtils.php
@@ -11,6 +11,7 @@
11 */ 11 */
12function get_curl_download_callback(&$charset, &$title, $curlGetInfo = 'curl_getinfo') 12function get_curl_download_callback(&$charset, &$title, $curlGetInfo = 'curl_getinfo')
13{ 13{
14 $isRedirected = false;
14 /** 15 /**
15 * cURL callback function for CURLOPT_WRITEFUNCTION (called during the download). 16 * cURL callback function for CURLOPT_WRITEFUNCTION (called during the download).
16 * 17 *
@@ -22,16 +23,24 @@ function get_curl_download_callback(&$charset, &$title, $curlGetInfo = 'curl_get
22 * 23 *
23 * @return int|bool length of $data or false if we need to stop the download 24 * @return int|bool length of $data or false if we need to stop the download
24 */ 25 */
25 return function(&$ch, $data) use ($curlGetInfo, &$charset, &$title) { 26 return function(&$ch, $data) use ($curlGetInfo, &$charset, &$title, &$isRedirected) {
26 $responseCode = $curlGetInfo($ch, CURLINFO_RESPONSE_CODE); 27 $responseCode = $curlGetInfo($ch, CURLINFO_RESPONSE_CODE);
27 if (!empty($responseCode) && $responseCode != 200) { 28 if (!empty($responseCode) && in_array($responseCode, [301, 302])) {
29 $isRedirected = true;
30 return strlen($data);
31 }
32 if (!empty($responseCode) && $responseCode !== 200) {
28 return false; 33 return false;
29 } 34 }
30 $contentType = $curlGetInfo($ch, CURLINFO_CONTENT_TYPE); 35 // After a redirection, the content type will keep the previous request value
36 // until it finds the next content-type header.
37 if (! $isRedirected || strpos(strtolower($data), 'content-type') !== false) {
38 $contentType = $curlGetInfo($ch, CURLINFO_CONTENT_TYPE);
39 }
31 if (!empty($contentType) && strpos($contentType, 'text/html') === false) { 40 if (!empty($contentType) && strpos($contentType, 'text/html') === false) {
32 return false; 41 return false;
33 } 42 }
34 if (empty($charset)) { 43 if (!empty($contentType) && empty($charset)) {
35 $charset = header_extract_charset($contentType); 44 $charset = header_extract_charset($contentType);
36 } 45 }
37 if (empty($charset)) { 46 if (empty($charset)) {