Add enable_curl_server_cert_verification option

Author: carlopi

extension/httpfs/httpfs.cpp

@@ -48,6 +48,8 @@ unique_ptr<HTTPParams> HTTPFSUtil::InitializeParameters(optional_ptr<FileOpener>
 	FileOpener::TryGetCurrentSetting(opener, "http_retry_wait_ms", result->retry_wait_ms, info);
 	FileOpener::TryGetCurrentSetting(opener, "http_retry_backoff", result->retry_backoff, info);
 	FileOpener::TryGetCurrentSetting(opener, "http_keep_alive", result->keep_alive, info);
+	FileOpener::TryGetCurrentSetting(opener, "enable_curl_server_cert_verification", result->enable_curl_server_cert_verification,
+	                                 info);
 	FileOpener::TryGetCurrentSetting(opener, "enable_server_cert_verification", result->enable_server_cert_verification,
 	                                 info);
 	FileOpener::TryGetCurrentSetting(opener, "ca_cert_file", result->ca_cert_file, info);

extension/httpfs/httpfs_curl_client.cpp

@@ -135,10 +135,12 @@ class HTTPFSCurlClient : public HTTPClient {
 			curl_easy_setopt(*curl, CURLOPT_FORBID_REUSE, 1L);
 		}
 
-		// client->enable_server_certificate_verification(http_params.enable_server_cert_verification);
-		if (http_params.enable_server_cert_verification) {
+		if (http_params.enable_curl_server_cert_verification) {
 			curl_easy_setopt(*curl, CURLOPT_SSL_VERIFYPEER, 1L);   // Verify the cert
 			curl_easy_setopt(*curl, CURLOPT_SSL_VERIFYHOST, 2L);   // Verify that the cert matches the hostname
+		} else {
+			curl_easy_setopt(*curl, CURLOPT_SSL_VERIFYPEER, 0L);   // Override default, don't verify the cert
+			curl_easy_setopt(*curl, CURLOPT_SSL_VERIFYHOST, 0L);   // Override default, don't verify that the cert matches the hostname
 		}
 
 		// set read timeout

extension/httpfs/httpfs_extension.cpp

@@ -55,6 +55,7 @@ static void LoadInternal(ExtensionLoader &loader) {
 	    "http_keep_alive",
 	    "Keep alive connections. Setting this to false can help when running into connection failures",
 	    LogicalType::BOOLEAN, Value(true));
+	config.AddExtensionOption("enable_curl_server_cert_verification", "Enable server side certificate verification for CURL backend.", LogicalType::BOOLEAN, Value(true));
 	config.AddExtensionOption("enable_server_cert_verification", "Enable server side certificate verification.",
 	                          LogicalType::BOOLEAN, Value(false));
 	config.AddExtensionOption("ca_cert_file", "Path to a custom certificate file for self-signed certificates.",

extension/httpfs/include/httpfs_client.hpp

@@ -19,6 +19,7 @@ struct HTTPFSParams : public HTTPParams {
 
 	bool force_download = DEFAULT_FORCE_DOWNLOAD;
 	bool enable_server_cert_verification = DEFAULT_ENABLE_SERVER_CERT_VERIFICATION;
+	bool enable_curl_server_cert_verification = true;
 	idx_t hf_max_per_page = DEFAULT_HF_MAX_PER_PAGE;
 	string ca_cert_file;
 	string bearer_token;