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/* -*- 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);
}
}
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