/*
 * This file is part of smolbote. It's copyrighted by the contributors recorded
 * in the version control history of the file, available from its original
 * location: https://neueland.iserlohn-fortress.net/gitea/aqua/smolbote
 *
 * SPDX-License-Identifier: GPL-3.0
 */

#include "crashhandler.h"
#include "version.h"
#include <QByteArray>
#include <client/linux/handler/exception_handler.h>
#include <unistd.h>

// bool filter_callback (void*)
// --> true: continue processing and write a minidump
static bool minidumpCb(const google_breakpad::MinidumpDescriptor &descriptor, void *context, bool succeeded)
{
    printf("Dump path: %s\n", descriptor.path());

    auto *ctx = static_cast<CrashHandler::Context *>(context);
    if(ctx != nullptr) {
        if(!ctx->handler.empty()) {
            // fork and run 'handler master:commit path.dmp'
            pid_t pid = fork();
            if(pid == 0) {
                // pathname program argument ... nullptr
                execlp(ctx->handler.c_str(),
                    ctx->handler.c_str(), "--crashd", ctx->dumppath.c_str(), "-c", descriptor.path(), poi_Version,
                    (char *)nullptr);
            }
        }
    }

    return succeeded;
}

bool CrashHandler::install_handler(CrashHandler::Context &ctx)
{
    if(ctx.dumppath.empty())
        return false;

    // Disable Chromium's crash handler so breakpad can capture crashes instead.
    // This has to be done before QtWebEngine gets initialized.
    const auto chromiumFlags = qgetenv("QTWEBENGINE_CHROMIUM_FLAGS");
    if(!chromiumFlags.contains("disable-in-process-stack-traces")) {
        qputenv("QTWEBENGINE_CHROMIUM_FLAGS", chromiumFlags + " --disable-in-process-stack-traces");
    }

    google_breakpad::MinidumpDescriptor descriptor(ctx.dumppath.c_str());

    // minidump descriptor, filter callback, minidump callback, callback_context, install handler, server_fd
    new google_breakpad::ExceptionHandler(descriptor, nullptr, minidumpCb, &ctx, true, -1);

    return true;
}