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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /toolkit/xre/nsGDKErrorHandler.cpp | |
parent | Initial commit. (diff) | |
download | firefox-upstream.tar.xz firefox-upstream.zip |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'toolkit/xre/nsGDKErrorHandler.cpp')
-rw-r--r-- | toolkit/xre/nsGDKErrorHandler.cpp | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/toolkit/xre/nsGDKErrorHandler.cpp b/toolkit/xre/nsGDKErrorHandler.cpp new file mode 100644 index 0000000000..421abdf12f --- /dev/null +++ b/toolkit/xre/nsGDKErrorHandler.cpp @@ -0,0 +1,109 @@ +/* -*- 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) + */ + constexpr auto serialString = "(Details: serial "_ns; + int32_t start = buffer.Find(serialString); + if (start == kNotFound) { + MOZ_CRASH_UNSAFE(message); + } + + start += serialString.Length(); + errno = 0; + event.serial = strtol(buffer.BeginReading() + start, &endptr, 10); + if (errno) { + MOZ_CRASH_UNSAFE(message); + } + + constexpr auto errorCodeString = " error_code "_ns; + if (!StringBeginsWith(Substring(endptr, buffer.EndReading()), + errorCodeString)) { + MOZ_CRASH_UNSAFE(message); + } + + errno = 0; + event.error_code = strtol(endptr + errorCodeString.Length(), &endptr, 10); + if (errno) { + MOZ_CRASH_UNSAFE(message); + } + + constexpr auto requestCodeString = " request_code "_ns; + if (!StringBeginsWith(Substring(endptr, buffer.EndReading()), + requestCodeString)) { + MOZ_CRASH_UNSAFE(message); + } + + errno = 0; + event.request_code = + strtol(endptr + requestCodeString.Length(), &endptr, 10); + if (errno) { + MOZ_CRASH_UNSAFE(message); + } + + constexpr auto minorCodeString = " minor_code "_ns; + start = buffer.Find(minorCodeString, /* aIgnoreCase = */ false, + endptr - buffer.BeginReading()); + if (!start) { + MOZ_CRASH_UNSAFE(message); + } + + errno = 0; + event.minor_code = strtol( + buffer.BeginReading() + start + minorCodeString.Length(), nullptr, 10); + if (errno) { + MOZ_CRASH_UNSAFE(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); + MOZ_CRASH_UNSAFE(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()), X11True); + } +} |