From 062be76e41a0353467372e0aff70b77331dfcecc Mon Sep 17 00:00:00 2001
From: Charles-Henri Bruyand <charles-henri.bruyand@open-xchange.com>
Date: Wed, 7 Dec 2022 15:26:15 +0100
Subject: [PATCH] minicurl: fix missing CURLOPT_XFERINFOFUNCTION on old curl
 versions

---
 pdns/minicurl.cc | 18 ++++++++++++++++++
 pdns/minicurl.hh |  4 ++++
 2 files changed, 22 insertions(+)

diff --git a/pdns/minicurl.cc b/pdns/minicurl.cc
index 02b5204562..948f3f488a 100644
--- a/pdns/minicurl.cc
+++ b/pdns/minicurl.cc
@@ -65,6 +65,7 @@ size_t MiniCurl::write_callback(char *ptr, size_t size, size_t nmemb, void *user
   return 0;
 }
 
+#if defined(LIBCURL_VERSION_NUM) && LIBCURL_VERSION_NUM >= 0x072000 // 7.32.0
 size_t MiniCurl::progress_callback(void *clientp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow)
 {
   if (clientp != nullptr) {
@@ -75,6 +76,18 @@ size_t MiniCurl::progress_callback(void *clientp, curl_off_t dltotal, curl_off_t
   }
   return 0;
 }
+#else
+size_t MiniCurl::progress_callback(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow)
+{
+  if (clientp != nullptr) {
+    MiniCurl* us = static_cast<MiniCurl*>(clientp);
+    if (us->d_byteslimit > 0 && dlnow > static_cast<double>(us->d_byteslimit)) {
+      return static_cast<size_t>(dlnow);
+    }
+  }
+  return 0;
+}
+#endif
 
 static string extractHostFromURL(const std::string& url)
 {
@@ -131,8 +144,13 @@ void MiniCurl::setupURL(const std::string& str, const ComboAddress* rem, const C
   if (d_byteslimit > 0) {
     /* enable progress meter */
     curl_easy_setopt(d_curl, CURLOPT_NOPROGRESS, 0L);
+#if defined(LIBCURL_VERSION_NUM) && LIBCURL_VERSION_NUM >= 0x072000 // 7.32.0
     curl_easy_setopt(d_curl, CURLOPT_XFERINFOFUNCTION, progress_callback);
     curl_easy_setopt(d_curl, CURLOPT_XFERINFODATA, this);
+#else
+    curl_easy_setopt(d_curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
+    curl_easy_setopt(d_curl, CURLOPT_PROGRESSDATA, this);
+#endif
   }
 
   curl_easy_setopt(d_curl, CURLOPT_TIMEOUT, static_cast<long>(timeout));
diff --git a/pdns/minicurl.hh b/pdns/minicurl.hh
index c5bbf3316e..52447a886a 100644
--- a/pdns/minicurl.hh
+++ b/pdns/minicurl.hh
@@ -43,7 +43,11 @@ public:
 private:
   CURL *d_curl;
   static size_t write_callback(char *ptr, size_t size, size_t nmemb, void *userdata);
+#if defined(LIBCURL_VERSION_NUM) && LIBCURL_VERSION_NUM >= 0x072000 // 7.32.0
   static size_t progress_callback(void *clientp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow);
+#else
+  static size_t progress_callback(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow);
+#endif
   std::string d_data;
   size_t d_byteslimit;
   struct curl_slist* d_header_list = nullptr;
-- 
2.47.2