curl: add verbose logging

and really verbose logging i you use --verbose-curl

rpcs3/main.cpp

@@ -226,22 +226,23 @@ struct fatal_error_listener final : logs::listener
 	}
 };
 
-constexpr auto arg_headless   = "headless";
-constexpr auto arg_no_gui     = "no-gui";
-constexpr auto arg_high_dpi   = "hidpi";
-constexpr auto arg_rounding   = "dpi-rounding";
-constexpr auto arg_styles     = "styles";
-constexpr auto arg_style      = "style";
-constexpr auto arg_stylesheet = "stylesheet";
-constexpr auto arg_config     = "config";
-constexpr auto arg_q_debug    = "qDebug";
-constexpr auto arg_error      = "error";
-constexpr auto arg_updating   = "updating";
-constexpr auto arg_user_id    = "user-id";
-constexpr auto arg_installfw  = "installfw";
-constexpr auto arg_installpkg = "installpkg";
-constexpr auto arg_commit_db  = "get-commit-db";
-constexpr auto arg_timer      = "high-res-timer";
+constexpr auto arg_headless     = "headless";
+constexpr auto arg_no_gui       = "no-gui";
+constexpr auto arg_high_dpi     = "hidpi";
+constexpr auto arg_rounding     = "dpi-rounding";
+constexpr auto arg_styles       = "styles";
+constexpr auto arg_style        = "style";
+constexpr auto arg_stylesheet   = "stylesheet";
+constexpr auto arg_config       = "config";
+constexpr auto arg_q_debug      = "qDebug";
+constexpr auto arg_error        = "error";
+constexpr auto arg_updating     = "updating";
+constexpr auto arg_user_id      = "user-id";
+constexpr auto arg_installfw    = "installfw";
+constexpr auto arg_installpkg   = "installpkg";
+constexpr auto arg_commit_db    = "get-commit-db";
+constexpr auto arg_timer        = "high-res-timer";
+constexpr auto arg_verbose_curl = "verbose-curl";
 
 int find_arg(std::string arg, int& argc, char* argv[])
 {
@@ -536,12 +537,17 @@ int main(int argc, char** argv)
 	parser.addOption(QCommandLineOption(arg_updating, "For internal usage."));
 	parser.addOption(QCommandLineOption(arg_commit_db, "Update commits.lst cache. Optional arguments: <path> <sha>"));
 	parser.addOption(QCommandLineOption(arg_timer, "Enable high resolution timer for better performance (windows)", "enabled", "1"));
+	parser.addOption(QCommandLineOption(arg_verbose_curl, "Enable verbose curl logging."));
 	parser.process(app->arguments());
 
 	// Don't start up the full rpcs3 gui if we just want the version or help.
 	if (parser.isSet(version_option) || parser.isSet(help_option))
 		return 0;
 
+	// Set curl to verbose if needed
+	rpcs3::curl::s_curl_verbose = parser.isSet(arg_verbose_curl);
+
+	// Handle update of commit database
 	if (parser.isSet(arg_commit_db))
 	{
 #ifdef _WIN32
@@ -619,7 +625,7 @@ int main(int argc, char** argv)
 		QByteArray buf;
 
 		// CURL handle to work with GitHub API
-		curl_handle curl;
+		rpcs3::curl::curl_handle curl;
 
 		struct curl_slist* hhdr{};
 		hhdr = curl_slist_append(hhdr, "Accept: application/vnd.github.v3+json");
@@ -657,10 +663,14 @@ int main(int argc, char** argv)
 				break;
 			}
 
+			// Reset error buffer before we call curl_easy_perform
+			curl.reset_error_buffer();
+
 			err = curl_easy_perform(curl);
 			if (err != CURLE_OK)
 			{
-				fprintf(stderr, "Curl error:\n%s", curl_easy_strerror(err));
+				const std::string error_string = curl.get_verbose_error(err);
+				fprintf(stderr, "curl_easy_perform(): %s", error_string.c_str());
 				break;
 			}
 

rpcs3/rpcs3qt/curl_handle.cpp

@@ -8,16 +8,29 @@
 
 LOG_CHANNEL(network_log, "NET");
 
+namespace rpcs3::curl
+{
+
 curl_handle::curl_handle(QObject* parent) : QObject(parent)
 {
+	reset_error_buffer();
+
 	m_curl = curl_easy_init();
 
+	CURLcode err = curl_easy_setopt(m_curl, CURLOPT_ERRORBUFFER, m_error_buffer.data());
+	if (err != CURLE_OK) network_log.error("curl_easy_setopt(CURLOPT_ERRORBUFFER): %s", curl_easy_strerror(err));
+
+	m_uses_error_buffer = err == CURLE_OK;
+
+	err = curl_easy_setopt(m_curl, CURLOPT_VERBOSE, s_curl_verbose);
+	if (err != CURLE_OK) network_log.error("curl_easy_setopt(CURLOPT_VERBOSE, %d): %s", s_curl_verbose, curl_easy_strerror(err));
+
 #ifdef _WIN32
 	// This shouldn't be needed on linux
 	const std::string path_to_cert = rpcs3::utils::get_exe_dir() + "cacert.pem";
 	const std::string ansi_path = utf8_path_to_ansi_path(path_to_cert);
 
-	const CURLcode err = curl_easy_setopt(m_curl, CURLOPT_CAINFO, ansi_path.data());
+	err = curl_easy_setopt(m_curl, CURLOPT_CAINFO, ansi_path.data());
 	if (err != CURLE_OK) network_log.error("curl_easy_setopt(CURLOPT_CAINFO, %s) error: %s", ansi_path, curl_easy_strerror(err));
 #endif
 }
@@ -31,3 +44,25 @@ CURL* curl_handle::get_curl() const
 {
 	return m_curl;
 }
+
+void curl_handle::reset_error_buffer()
+{
+	ensure(m_error_buffer.size() == CURL_ERROR_SIZE);
+	m_error_buffer[0] = 0;
+}
+
+std::string curl_handle::get_verbose_error(CURLcode code)
+{
+	if (m_uses_error_buffer)
+	{
+		ensure(m_error_buffer.size() == CURL_ERROR_SIZE);
+		if (m_error_buffer[0])
+		{
+			return fmt::format("Curl error (%d): %s\nDetails: %s", static_cast<int>(code), curl_easy_strerror(code), m_error_buffer.data());
+		}
+	}
+
+	return fmt::format("Curl error (%d): %s", static_cast<int>(code), curl_easy_strerror(code));
+}
+
+}

rpcs3/rpcs3qt/curl_handle.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <array>
 #include <QObject>
 
 #ifndef CURL_STATICLIB
@@ -7,11 +8,12 @@
 #endif
 #include <curl/curl.h>
 
+namespace rpcs3::curl
+{
+static bool s_curl_verbose = false;
+
 class curl_handle : public QObject
 {
-private:
-	CURL* m_curl = nullptr;
-
 public:
 	explicit curl_handle(QObject* parent = nullptr);
 	~curl_handle();
@@ -22,4 +24,14 @@ public:
 	{
 		return get_curl();
 	}
+
+	void reset_error_buffer();
+	std::string get_verbose_error(CURLcode code);
+
+private:
+	CURL* m_curl = nullptr;
+	bool m_uses_error_buffer = false;
+	std::array<char, CURL_ERROR_SIZE> m_error_buffer;
 };
+
+}

rpcs3/rpcs3qt/downloader.cpp

@@ -19,7 +19,7 @@ usz curl_write_cb_compat(char* ptr, usz /*size*/, usz nmemb, void* userdata)
 downloader::downloader(QWidget* parent)
 	: QObject(parent)
 	, m_parent(parent)
-	, m_curl(new curl_handle(this))
+	, m_curl(new rpcs3::curl::curl_handle(this))
 {
 }
 
@@ -64,12 +64,15 @@ void downloader::start(const std::string& url, bool follow_location, bool show_p
 
 	m_thread = QThread::create([this]
 	{
-		const auto result = curl_easy_perform(m_curl->get_curl());
+		// Reset error buffer before we call curl_easy_perform
+		m_curl->reset_error_buffer();
+
+		const CURLcode result = curl_easy_perform(m_curl->get_curl());
 		m_curl_success = result == CURLE_OK;
 
 		if (!m_curl_success && !m_curl_abort)
 		{
-			const std::string error = "Curl error: " + std::string{ curl_easy_strerror(result) };
+			const std::string error = fmt::format("curl_easy_perform(): %s", m_curl->get_verbose_error(result));
 			network_log.error("%s", error);
 			Q_EMIT signal_download_error(QString::fromStdString(error));
 		}

rpcs3/rpcs3qt/downloader.h

@@ -3,7 +3,14 @@
 #include <QObject>
 #include "util/atomic.hpp"
 
-class curl_handle;
+namespace rpcs3
+{
+	namespace curl
+	{
+		class curl_handle;
+	}
+}
+
 class progress_dialog;
 
 class downloader : public QObject
@@ -35,7 +42,7 @@ Q_SIGNALS:
 private:
 	QWidget* m_parent = nullptr;
 
-	curl_handle* m_curl = nullptr;
+	rpcs3::curl::curl_handle* m_curl = nullptr;
 	QByteArray m_curl_buf;
 	atomic_t<bool> m_curl_abort = false;
 	atomic_t<bool> m_curl_success = false;