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https://github.com/LadybirdBrowser/ladybird.git
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31d4bcf5bf
Since applications using Core::EventLoop no longer need to create a socket in /tmp/rpc/, and also don't need to listen for incoming connections on this socket, we can remove a whole bunch of pledges!
278 lines
10 KiB
C++
278 lines
10 KiB
C++
/*
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* Copyright (c) 2020-2021, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/LexicalPath.h>
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#include <AK/StringBuilder.h>
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#include <AK/Types.h>
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#include <AK/URL.h>
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#include <Applications/CrashReporter/CrashReporterWindowGML.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/File.h>
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#include <LibCoreDump/Backtrace.h>
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#include <LibCoreDump/Reader.h>
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#include <LibDesktop/AppFile.h>
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#include <LibDesktop/Launcher.h>
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#include <LibELF/CoreDump.h>
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#include <LibGUI/Application.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/Button.h>
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#include <LibGUI/FileIconProvider.h>
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#include <LibGUI/Icon.h>
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#include <LibGUI/ImageWidget.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/LinkLabel.h>
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#include <LibGUI/TabWidget.h>
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#include <LibGUI/TextEditor.h>
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#include <LibGUI/Widget.h>
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#include <LibGUI/Window.h>
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#include <string.h>
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#include <unistd.h>
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struct TitleAndText {
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String title;
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String text;
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};
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static TitleAndText build_backtrace(const CoreDump::Reader& coredump, const ELF::Core::ThreadInfo& thread_info, size_t thread_index)
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{
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CoreDump::Backtrace backtrace(coredump, thread_info);
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auto metadata = coredump.metadata();
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StringBuilder builder;
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auto prepend_metadata = [&](auto& key, StringView fmt) {
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auto maybe_value = metadata.get(key);
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if (!maybe_value.has_value() || maybe_value.value().is_empty())
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return;
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builder.appendff(fmt, maybe_value.value());
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builder.append('\n');
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builder.append('\n');
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};
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auto& backtrace_entries = backtrace.entries();
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if (metadata.contains("assertion"))
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prepend_metadata("assertion", "ASSERTION FAILED: {}");
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else if (metadata.contains("pledge_violation"))
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prepend_metadata("pledge_violation", "Has not pledged {}");
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auto fault_address = metadata.get("fault_address");
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auto fault_type = metadata.get("fault_type");
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auto fault_access = metadata.get("fault_access");
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if (fault_address.has_value() && fault_type.has_value() && fault_access.has_value()) {
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builder.appendff("{} fault on {} at address {}\n\n", fault_type.value(), fault_access.value(), fault_address.value());
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}
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auto first_entry = true;
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for (auto& entry : backtrace.entries()) {
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if (first_entry)
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first_entry = false;
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else
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builder.append('\n');
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builder.append(entry.to_string());
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}
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return {
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String::formatted("Thread #{} (TID {})", thread_index, thread_info.tid),
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builder.build()
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};
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}
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static TitleAndText build_cpu_registers(const ELF::Core::ThreadInfo& thread_info, size_t thread_index)
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{
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auto& regs = thread_info.regs;
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StringBuilder builder;
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builder.appendff("eax={:08x} ebx={:08x} ecx={:08x} edx={:08x}", regs.eax, regs.ebx, regs.ecx, regs.edx);
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builder.append('\n');
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builder.appendff("ebp={:08x} esp={:08x} esi={:08x} edi={:08x}", regs.ebp, regs.esp, regs.esi, regs.edi);
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builder.append('\n');
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builder.appendff("eip={:08x} eflags={:08x}", regs.eip, regs.eflags);
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return {
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String::formatted("Thread #{} (TID {})", thread_index, thread_info.tid),
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builder.build()
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};
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}
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int main(int argc, char** argv)
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{
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if (pledge("stdio recvfd sendfd cpath rpath unix", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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const char* coredump_path = nullptr;
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bool unlink_after_use = false;
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Core::ArgsParser args_parser;
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args_parser.set_general_help("Show information from an application crash coredump.");
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args_parser.add_positional_argument(coredump_path, "Coredump path", "coredump-path");
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args_parser.add_option(unlink_after_use, "Delete the coredump after its parsed", "unlink", 0);
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args_parser.parse(argc, argv);
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Vector<TitleAndText> thread_backtraces;
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Vector<TitleAndText> thread_cpu_registers;
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String executable_path;
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Vector<String> arguments;
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Vector<String> environment;
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int pid { 0 };
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u8 termination_signal { 0 };
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{
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auto coredump = CoreDump::Reader::create(coredump_path);
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if (!coredump) {
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warnln("Could not open coredump '{}'", coredump_path);
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return 1;
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}
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size_t thread_index = 0;
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coredump->for_each_thread_info([&](auto& thread_info) {
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thread_backtraces.append(build_backtrace(*coredump, thread_info, thread_index));
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thread_cpu_registers.append(build_cpu_registers(thread_info, thread_index));
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++thread_index;
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return IterationDecision::Continue;
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});
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executable_path = coredump->process_executable_path();
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arguments = coredump->process_arguments();
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environment = coredump->process_environment();
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pid = coredump->process_pid();
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termination_signal = coredump->process_termination_signal();
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}
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if (unlink_after_use) {
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if (Core::File::remove(coredump_path, Core::File::RecursionMode::Disallowed, false).is_error())
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dbgln("Failed deleting coredump file");
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}
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auto app = GUI::Application::construct(argc, argv);
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if (pledge("stdio recvfd sendfd rpath unix", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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if (unveil(executable_path.characters(), "r") < 0) {
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perror("unveil");
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return 1;
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}
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if (unveil("/res", "r") < 0) {
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perror("unveil");
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return 1;
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}
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if (unveil("/tmp/portal/launch", "rw") < 0) {
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perror("unveil");
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return 1;
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}
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if (unveil(nullptr, nullptr) < 0) {
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perror("unveil");
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return 1;
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}
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auto app_icon = GUI::Icon::default_icon("app-crash-reporter");
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auto window = GUI::Window::construct();
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window->set_title("Crash Reporter");
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window->set_icon(app_icon.bitmap_for_size(16));
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window->resize(460, 340);
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window->center_on_screen();
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auto& widget = window->set_main_widget<GUI::Widget>();
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widget.load_from_gml(crash_reporter_window_gml);
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auto& icon_image_widget = *widget.find_descendant_of_type_named<GUI::ImageWidget>("icon");
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icon_image_widget.set_bitmap(GUI::FileIconProvider::icon_for_executable(executable_path).bitmap_for_size(32));
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auto app_name = LexicalPath(executable_path).basename();
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auto af = Desktop::AppFile::get_for_app(app_name);
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if (af->is_valid())
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app_name = af->name();
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auto& description_label = *widget.find_descendant_of_type_named<GUI::Label>("description");
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description_label.set_text(String::formatted("\"{}\" (PID {}) has crashed - {} (signal {})", app_name, pid, strsignal(termination_signal), termination_signal));
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auto& executable_link_label = *widget.find_descendant_of_type_named<GUI::LinkLabel>("executable_link");
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executable_link_label.set_text(LexicalPath::canonicalized_path(executable_path));
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executable_link_label.on_click = [&] {
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LexicalPath path { executable_path };
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Desktop::Launcher::open(URL::create_with_file_protocol(path.dirname(), path.basename()));
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};
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auto& coredump_link_label = *widget.find_descendant_of_type_named<GUI::LinkLabel>("coredump_link");
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coredump_link_label.set_text(LexicalPath::canonicalized_path(coredump_path));
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coredump_link_label.on_click = [&] {
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LexicalPath path { coredump_path };
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Desktop::Launcher::open(URL::create_with_file_protocol(path.dirname(), path.basename()));
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};
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auto& arguments_label = *widget.find_descendant_of_type_named<GUI::Label>("arguments_label");
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arguments_label.set_text(String::join(" ", arguments));
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auto& tab_widget = *widget.find_descendant_of_type_named<GUI::TabWidget>("tab_widget");
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auto& backtrace_tab = tab_widget.add_tab<GUI::Widget>("Backtrace");
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backtrace_tab.set_layout<GUI::VerticalBoxLayout>();
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backtrace_tab.layout()->set_margins({ 4, 4, 4, 4 });
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auto& backtrace_label = backtrace_tab.add<GUI::Label>("A backtrace for each thread alive during the crash is listed below:");
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backtrace_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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backtrace_label.set_fixed_height(16);
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auto& backtrace_tab_widget = backtrace_tab.add<GUI::TabWidget>();
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backtrace_tab_widget.set_tab_position(GUI::TabWidget::TabPosition::Bottom);
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for (auto& backtrace : thread_backtraces) {
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auto& backtrace_text_editor = backtrace_tab_widget.add_tab<GUI::TextEditor>(backtrace.title);
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backtrace_text_editor.set_layout<GUI::VerticalBoxLayout>();
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backtrace_text_editor.layout()->set_margins({ 4, 4, 4, 4 });
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backtrace_text_editor.set_text(backtrace.text);
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backtrace_text_editor.set_mode(GUI::TextEditor::Mode::ReadOnly);
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backtrace_text_editor.set_should_hide_unnecessary_scrollbars(true);
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}
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auto& cpu_registers_tab = tab_widget.add_tab<GUI::Widget>("CPU Registers");
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cpu_registers_tab.set_layout<GUI::VerticalBoxLayout>();
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cpu_registers_tab.layout()->set_margins({ 4, 4, 4, 4 });
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auto& cpu_registers_label = cpu_registers_tab.add<GUI::Label>("The CPU register state for each thread alive during the crash is listed below:");
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cpu_registers_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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cpu_registers_label.set_fixed_height(16);
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auto& cpu_registers_tab_widget = cpu_registers_tab.add<GUI::TabWidget>();
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cpu_registers_tab_widget.set_tab_position(GUI::TabWidget::TabPosition::Bottom);
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for (auto& cpu_registers : thread_cpu_registers) {
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auto& cpu_registers_text_editor = cpu_registers_tab_widget.add_tab<GUI::TextEditor>(cpu_registers.title);
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cpu_registers_text_editor.set_layout<GUI::VerticalBoxLayout>();
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cpu_registers_text_editor.layout()->set_margins({ 4, 4, 4, 4 });
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cpu_registers_text_editor.set_text(cpu_registers.text);
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cpu_registers_text_editor.set_mode(GUI::TextEditor::Mode::ReadOnly);
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cpu_registers_text_editor.set_should_hide_unnecessary_scrollbars(true);
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}
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auto& environment_tab = tab_widget.add_tab<GUI::Widget>("Environment");
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environment_tab.set_layout<GUI::VerticalBoxLayout>();
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environment_tab.layout()->set_margins({ 4, 4, 4, 4 });
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auto& environment_text_editor = environment_tab.add<GUI::TextEditor>();
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environment_text_editor.set_text(String::join("\n", environment));
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environment_text_editor.set_mode(GUI::TextEditor::Mode::ReadOnly);
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environment_text_editor.set_should_hide_unnecessary_scrollbars(true);
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auto& close_button = *widget.find_descendant_of_type_named<GUI::Button>("close_button");
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close_button.on_click = [&](auto) {
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app->quit();
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};
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window->show();
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return app->exec();
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}
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