aboutsummaryrefslogtreecommitdiff
path: root/src/main.cpp
blob: 1a8dd1129908edeb68e225870bf746e034c9ae61 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
/*
 * 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 "browser.h"
#include "session.h"
#include "util.h"
#include <version.h>
#include <QFile>
#include <QLibraryInfo>
#include <QTranslator>
#include "configuration.h"
#include <iostream>
#include <memory>
#include <QPluginLoader>
#include <plugininterface.h>
#include <QVersionNumber>
#ifdef _WIN32
#include <cstdio>
#include <windows.h>
#endif

#ifdef BreakpadEnabled

struct BreakpadContext {
    char *handler = nullptr;
};

#ifdef Q_OS_LINUX
#include <unistd.h>
#include <client/linux/handler/exception_handler.h>

// bool filter_callback (void*)
// --> true: continue processing and write a minidump

static bool dumpCallback(const google_breakpad::MinidumpDescriptor &descriptor, void *context, bool succeeded)
{
    printf("Dump path: %s\n", descriptor.path());

    auto *ctx = static_cast<BreakpadContext *>(context);
    if(ctx != nullptr) {
        if(ctx->handler != nullptr) {
            // fork and run 'handler master:commit path.dmp'
            pid_t pid = fork();
            if(pid == 0) {
                char buffer[256];
                snprintf(buffer, 256, "%s %s %s", ctx->handler, poi_Build, descriptor.path());
                execlp("/bin/sh", "/bin/sh", "-c", buffer, (char *)nullptr);
            }
        }
    }

    return succeeded;
}
#endif // Q_OS_LINUX
#endif

int main(int argc, char **argv)
{
    // a beautiful hack to be able to write to stdout on Windows
#ifdef _WIN32
    if(AttachConsole(ATTACH_PARENT_PROCESS)) {
        freopen("CONOUT$", "w", stdout);
        freopen("CONOUT$", "w", stderr);
    }
#endif

    // 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");
    }

    // create and load configuration
    std::unique_ptr<Configuration> config = std::make_unique<Configuration>(nullptr);
#ifdef QT_DEBUG
    QObject::connect(config.get(), &Configuration::settingChanged, [](const std::string &path, const QString &value) {
        qDebug("!!! setting changed %s=[%s]", path.c_str(), qUtf8Printable(value));
    });
#endif

    if(!config->parse(argc, argv)) {
        qWarning("Error parsing command line, check --help for usage.");
        return -1;
    }
    if(!config->parse(config->value<std::string>("config").value())) {
        qWarning("Error parsing config file.");
    }

    // --version
    if(config->exists("version")) {
        auto ver = QVersionNumber::fromString(QLatin1String(poi_Version));
        std::cout << "smolbote " << ver.toString().toStdString() << std::endl;
        return 0;
    }

    // --build
    if(config->exists("build")) {
        std::cout << poi_Version << std::endl;
        return 0;
    }

    QVector<QPluginLoader *> plugins;
    CommandHash_t pluginCommands;

    for(const QString &path : Util::files(config->value<QString>("plugins.path").value())) {
        QPluginLoader *loader = new QPluginLoader(path);
        const bool loaded = loader->load();
#ifdef QT_DEBUG
        qDebug("Loading plugin %s %s", qUtf8Printable(path), loaded ? "[ok]" : "[failed]");
#endif

        if(loader->load()) {
            plugins.append(loader);
            auto *plugin = qobject_cast<PluginInterface *>(loader->instance());
            pluginCommands.unite(plugin->commands());
        } else {
            qDebug("%s", qUtf8Printable(loader->errorString()));
            delete loader;
        }
    }

    if(config->exists("help")) {
        std::cout << "smolbote " << poi_Version << ": yet another no-frills browser" << std::endl;
        std::cout << "Usage: " << argv[0] << " [options] [command/URL(s)]" << std::endl
                  << std::endl;

        std::cout << "Command-line Options: " << std::endl
                  << config->commandlineOptions() << std::endl;

        std::cout << "Commands: " << std::endl;
        for(auto it = pluginCommands.constBegin(); it != pluginCommands.constEnd(); ++it) {
            std::cout << it.key().toStdString() << std::endl;
        }
        std::cout << std::endl;

        std::cout << "Configuration Options: " << std::endl
                  << config->configurationOptions() << std::endl;

#ifdef Q_OS_LINUX
        std::cout << std::endl
                  << "For more information refer to the manual page smolbote.7" << std::endl;
#endif
        return 0;
    }

    // argc, argv, allowSecondary
    Browser app(argc, argv);
    // set this, otherwise the webview becomes black when using a stylesheet
    app.setAttribute(Qt::AA_DontCreateNativeWidgetSiblings, true);

#ifdef BreakpadEnabled
    const std::string crashpath = config->value<std::string>("browser.crash.path").value_or("/tmp");
    assert(!crashpath.empty());

    BreakpadContext ctx;
    google_breakpad::MinidumpDescriptor descriptor(crashpath.c_str());

    const auto crashHandler = config->value<std::string>("browser.crash.handler");
    if(crashHandler) {
        const int length = crashHandler.value().length() + 1;
        ctx.handler = new char[length];
        crashHandler.value().copy(ctx.handler, length - 1);
        ctx.handler[length - 1] = '\0';
    }

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

#ifdef QT_DEBUG
    qDebug("Installed breakpad exception handler (path=%s)", crashpath.c_str());
#endif
#endif

    // translator
    if(config->exists("browser.locale")) {
        auto *translator = new QTranslator(&app);
        if(translator->load("qt_" + config->value<QString>("browser.locale").value(), QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
            app.installTranslator(translator);
        else
            delete translator;
    }

    if(config->exists("browser.translation")) {
        auto *translator = new QTranslator(&app);
        if(translator->load(config->value<QString>("browser.translation").value()))
            app.installTranslator(translator);
        else
            delete translator;
    }

    // command line arguments
    bool isStandalone = config->exists("no-remote");
    auto arguments = config->value<std::vector<std::string>>("args");
    auto session = config->value<QString>("browser.session");
    auto profile = config->value<QString>("profile.default");

    app.setConfiguration(config);
    app.setup(plugins);

    QStringList urls;
    if(arguments) {
        for(const auto &u : arguments.value()) {
            if(pluginCommands.contains(QString::fromStdString(u))) {
                return pluginCommands.value(QString::fromStdString(u))();
            } else {
                urls.append(QString::fromStdString(u));
            }
        }
    }

    // if app is primary, create new sessions from received messages
    if(app.isPrimary() && !isStandalone) {
        QObject::connect(&app, &Browser::receivedMessage, &app, [&app](quint32 instanceId, QByteArray message) {
            Q_UNUSED(instanceId);
            auto doc = QJsonDocument::fromJson(message);
            app.createSession(doc.object());
        });
    }

    {
        QJsonObject sessionData;
        if(session) {
            QFile sessionJson(session.value());
            if(sessionJson.open(QIODevice::ReadOnly | QIODevice::Text)) {
                sessionData = QJsonDocument::fromJson(sessionJson.readAll()).object();
                sessionJson.close();
            }
        } else {
            sessionData = Session::window(profile.value(), urls);
        }

        if(app.isPrimary() || isStandalone) {
            app.createSession(sessionData);
        } else {
            // app is secondary and not standalone
            return app.sendMessage(QJsonDocument(sessionData).toJson());
        }
    }

    return app.exec();
}