/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "nsGDKErrorHandler.h" #include <gtk/gtk.h> #include <gdk/gdkx.h> #include <errno.h> #include <stdlib.h> #include <string.h> #include "nsDebug.h" #include "nsString.h" #include "nsX11ErrorHandler.h" #include "prenv.h" /* See https://bugzilla.gnome.org/show_bug.cgi?id=629608#c8 * * GDK implements X11 error traps to ignore X11 errors. * Unfortunatelly We don't know which X11 events can be ignored * so we have to utilize the Gdk error handler to avoid * false alarms in Gtk3. */ static void GdkErrorHandler(const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer user_data) { if (strstr(message, "X Window System error")) { XErrorEvent event; nsDependentCString buffer(message); char *endptr; /* Parse Gdk X Window error message which has this format: * (Details: serial XXXX error_code XXXX request_code XXXX (XXXX) minor_code XXXX) */ NS_NAMED_LITERAL_CSTRING(serialString, "(Details: serial "); int32_t start = buffer.Find(serialString); if (start == kNotFound) NS_RUNTIMEABORT(message); start += serialString.Length(); errno = 0; event.serial = strtol(buffer.BeginReading() + start, &endptr, 10); if (errno) NS_RUNTIMEABORT(message); NS_NAMED_LITERAL_CSTRING(errorCodeString, " error_code "); if (!StringBeginsWith(Substring(endptr, buffer.EndReading()), errorCodeString)) NS_RUNTIMEABORT(message); errno = 0; event.error_code = strtol(endptr + errorCodeString.Length(), &endptr, 10); if (errno) NS_RUNTIMEABORT(message); NS_NAMED_LITERAL_CSTRING(requestCodeString, " request_code "); if (!StringBeginsWith(Substring(endptr, buffer.EndReading()), requestCodeString)) NS_RUNTIMEABORT(message); errno = 0; event.request_code = strtol(endptr + requestCodeString.Length(), &endptr, 10); if (errno) NS_RUNTIMEABORT(message); NS_NAMED_LITERAL_CSTRING(minorCodeString, " minor_code "); start = buffer.Find(minorCodeString, endptr - buffer.BeginReading()); if (!start) NS_RUNTIMEABORT(message); errno = 0; event.minor_code = strtol(buffer.BeginReading() + start + minorCodeString.Length(), nullptr, 10); if (errno) NS_RUNTIMEABORT(message); event.display = GDK_DISPLAY_XDISPLAY(gdk_display_get_default()); // Gdk does not provide resource ID event.resourceid = 0; X11Error(event.display, &event); } else { g_log_default_handler(log_domain, log_level, message, user_data); NS_RUNTIMEABORT(message); } } void InstallGdkErrorHandler() { g_log_set_handler("Gdk", (GLogLevelFlags)(G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL | G_LOG_FLAG_RECURSION), GdkErrorHandler, nullptr); if (PR_GetEnv("MOZ_X_SYNC")) { XSynchronize(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), True); } }