build_info.cpp

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/*
    Copyright (C) 2015 - 2021
    Part of the Battle for Wesnoth Project https://www.wesnoth.org/

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY.

    See the COPYING file for more details.
*/

#define GETTEXT_DOMAIN "wesnoth-lib"

#include "build_info.hpp"

#include "desktop/version.hpp"
#include "game_config.hpp"
#include "filesystem.hpp"
#include "formatter.hpp"
#include "gettext.hpp"
#include "serialization/string_utils.hpp"
#include "serialization/unicode.hpp"
#include "game_version.hpp"
#include "sound.hpp"
#include "video.hpp"
#include "addon/manager.hpp"

#include <algorithm>
#include <fstream>
#include <iomanip>

#include "lua/lua.h"

#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <SDL2/SDL_mixer.h>

#include <boost/algorithm/string.hpp>
#include <boost/predef.h>
#include <boost/version.hpp>

#ifndef __APPLE__
#include <openssl/crypto.h>
#include <openssl/opensslv.h>
#endif

#include <pango/pangocairo.h>

#ifdef __APPLE__
// apple_notification.mm uses Foundation.h, which is an Objective-C header;
// but CoreFoundation.h is a C header which also defines these.
#include <CoreFoundation/CoreFoundation.h>
#endif

namespace game_config
{

namespace {

struct version_table_manager
{
    std::vector<std::string> compiled, linked, names;
    std::vector<optional_feature> features;

    version_table_manager();
};

const version_table_manager versions;

#if 0
std::string format_version(unsigned a, unsigned b, unsigned c)
{
    return formatter() << a << '.' << b << '.' << c;
}
#endif

std::string format_version(const SDL_version& v)
{
    return formatter() << static_cast<unsigned>(v.major) << '.'
                        << static_cast<unsigned>(v.minor) << '.'
                        << static_cast<unsigned>(v.patch);
}

#ifndef __APPLE__

std::string format_openssl_patch_level(uint8_t p)
{
    return p <= 26
        ? std::string(1, 'a' + static_cast<char>(p) - 1)
        : "patch" + std::to_string(p);
}

std::string format_openssl_version(long v)
{
    int major, minor, fix, patch, status;
    std::ostringstream fmt;

    //
    // The people who maintain OpenSSL are not from this world. I suppose it's
    // only fair that I'm the one who gets to try to make sense of their version
    // encoding scheme.  -- shadowm
    //

    if(v < 0x0930L) {
        // Pre-0.9.3 seems simpler times overall.
        minor = v & 0x0F00L >> 8;
        fix   = v & 0x00F0L >> 4;
        patch = v & 0x000FL;

        fmt << "0." << minor << '.' << fix;
        if(patch) {
            fmt << format_openssl_patch_level(patch);
        }
    } else {
        //
        // Note that they either assume the major version will never be greater than
        // 9, they plan to use hexadecimal digits for versions 10.x.x through
        // 15.x.x, or they expect long to be always > 32-bits by then. Who the hell
        // knows, really.
        //
        major  = (v & 0xF0000000L) >> 28;
        minor  = (v & 0x0FF00000L) >> 20;
        fix    = (v & 0x000FF000L) >> 12;
        patch  = (v & 0x00000FF0L) >> 4;
        status = (v & 0x0000000FL);

        if(v < 0x00905100L) {
            //
            // From wiki.openssl.org (also mentioned in opensslv.h, in the most oblique
            // fashion possible):
            //
            // "Versions between 0.9.3 and 0.9.5 had a version identifier with this interpretation:
            // MMNNFFRBB major minor fix final beta/patch"
            //
            // Both the wiki and opensslv.h fail to accurately list actual version
            // numbers that ended up used in the wild -- e.g. 0.9.3a is supposedly
            // 0x0090301f when it really was 0x00903101.
            //
            const uint8_t is_final = (v & 0xF00L) >> 8;
            status = is_final ? 0xF : 0;
            patch = v & 0xFFL;
        } else if(v < 0x00906000L) {
            //
            // Quoth opensslv.h:
            //
            // "For continuity reasons (because 0.9.5 is already out, and is coded
            // 0x00905100), between 0.9.5 and 0.9.6 the coding of the patch level
            // part is slightly different, by setting the highest bit. This means
            // that 0.9.5a looks like this: 0x0090581f. At 0.9.6, we can start
            // with 0x0090600S..."
            //
            patch ^= 1 << 7;
        }

        fmt << major << '.' << minor << '.' << fix;

        if(patch) {
            fmt << format_openssl_patch_level(patch);
        }

        if(status == 0x0) {
            fmt << "-dev";
        } else if(status < 0xF) {
            fmt << "-beta" << status;
        }
    }

    return fmt.str();

}

#endif

version_table_manager::version_table_manager()
    : compiled(LIB_COUNT, "")
    , linked(LIB_COUNT, "")
    , names(LIB_COUNT, "")
    , features()
{
    SDL_version sdl_version;


    //
    // SDL
    //

    SDL_VERSION(&sdl_version);
    compiled[LIB_SDL] = format_version(sdl_version);

    SDL_GetVersion(&sdl_version);
    linked[LIB_SDL] = format_version(sdl_version);

    names[LIB_SDL] = "SDL";

    //
    // SDL_image
    //

    SDL_IMAGE_VERSION(&sdl_version);
    compiled[LIB_SDL_IMAGE] = format_version(sdl_version);

    const SDL_version* sdl_rt_version = IMG_Linked_Version();
    if(sdl_rt_version) {
        linked[LIB_SDL_IMAGE] = format_version(*sdl_rt_version);
    }

    names[LIB_SDL_IMAGE] = "SDL_image";

    //
    // SDL_mixer
    //

    SDL_MIXER_VERSION(&sdl_version);
    compiled[LIB_SDL_MIXER] = format_version(sdl_version);

    sdl_rt_version = Mix_Linked_Version();
    if(sdl_rt_version) {
        linked[LIB_SDL_MIXER] = format_version(*sdl_rt_version);
    }

    names[LIB_SDL_MIXER] = "SDL_mixer";

    //
    // Boost
    //

    compiled[LIB_BOOST] = BOOST_LIB_VERSION;
    std::replace(compiled[LIB_BOOST].begin(), compiled[LIB_BOOST].end(), '_', '.');
    names[LIB_BOOST] = "Boost";

    //
    // Lua
    //

    compiled[LIB_LUA] = LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "." LUA_VERSION_RELEASE;
    names[LIB_LUA] = "Lua";

    //
    // OpenSSL/libcrypto
    //

#ifndef __APPLE__
    compiled[LIB_CRYPTO] = format_openssl_version(OPENSSL_VERSION_NUMBER);
    linked[LIB_CRYPTO] = format_openssl_version(SSLeay());
    names[LIB_CRYPTO] = "OpenSSL/libcrypto";
#endif

    //
    // Cairo
    //

    compiled[LIB_CAIRO] = CAIRO_VERSION_STRING;
    linked[LIB_CAIRO] = cairo_version_string();
    names[LIB_CAIRO] = "Cairo";

    //
    // Pango
    //

    compiled[LIB_PANGO] = PANGO_VERSION_STRING;
    linked[LIB_PANGO] = pango_version_string();
    names[LIB_PANGO] = "Pango";

    //
    // Features table.
    //

    features.emplace_back(N_("feature^Lua console completion"));
#ifdef HAVE_HISTORY
    features.back().enabled = true;
#endif

#ifdef _X11

    features.emplace_back(N_("feature^D-Bus notifications back end"));
#ifdef HAVE_LIBDBUS
    features.back().enabled = true;
#endif

#endif /* _X11 */

#ifdef _WIN32
    // Always compiled in.
    features.emplace_back(N_("feature^Win32 notifications back end"));
    features.back().enabled = true;
#endif

#ifdef __APPLE__
    // Always compiled in.
    features.emplace_back(N_("feature^Cocoa notifications back end"));
    features.back().enabled = true;
#endif /* __APPLE__ */
}

const std::string empty_version = "";

} // end anonymous namespace 1

std::string build_arch()
{
#if BOOST_ARCH_X86_64
    return "x86_64";
#elif BOOST_ARCH_X86_32
    return "x86";
#elif BOOST_ARCH_ARM && (defined(__arm64) || defined(_M_ARM64))
    return "arm64";
#elif BOOST_ARCH_ARM
    return "arm";
#elif BOOST_ARCH_IA64
    return "ia64";
#elif BOOST_ARCH_PPC
    return "ppc";
#elif BOOST_ARCH_ALPHA
    return "alpha";
#elif BOOST_ARCH_MIPS
    return "mips";
#elif BOOST_ARCH_SPARC
    return "sparc";
#else
    // Congratulations, you're running Wesnoth on an exotic platform -- either that or you live in
    // the foretold future where x86 and ARM stopped being the dominant CPU architectures for the
    // general-purpose consumer market. If you want to add label support for your platform, check
    // out the Boost.Predef library's documentation and alter the code above accordingly.
    //
    // On the other hand, if you got here looking for Wesnoth's biggest secret let me just say
    // right here and now that Irdya is round. There, I said the thing that nobody has dared say
    // in mainline content before.
    return _("cpu_architecture^<unknown>");
#endif
}

std::vector<optional_feature> optional_features_table(bool localize)
{
    std::vector<optional_feature> res = versions.features;

    for(std::size_t k = 0; k < res.size(); ++k) {
        if(localize) {
            res[k].name = _(res[k].name.c_str());
        } else {
            // Strip annotation carets ("blah blah^actual text here") from translatable
            // strings.
            const auto caret_pos = res[k].name.find('^');
            if(caret_pos != std::string::npos) {
                res[k].name.erase(0, caret_pos + 1);
            }
        }
    }
    return res;
}

const std::string& library_build_version(LIBRARY_ID lib)
{
    if(lib >= LIB_COUNT) {
        return empty_version;
    }

    return versions.compiled[lib];
}

const std::string& library_runtime_version(LIBRARY_ID lib)
{
    if(lib >= LIB_COUNT) {
        return empty_version;
    }

    return versions.linked[lib];
}

const std::string& library_name(LIBRARY_ID lib)
{
    if(lib >= LIB_COUNT) {
        return empty_version;
    }

    return versions.names[lib];
}

std::string dist_channel_id()
{
    std::string info;
    std::ifstream infofile(game_config::path + "/data/dist");
    if(infofile.is_open()) {
        std::getline(infofile, info);
        infofile.close();
        boost::trim(info);
    }

    if(info.empty()) {
        return "Default";
    }

    return info;
}

namespace {

/**
 * Formats items into a tidy 2-column list with a fixed-length first column.
 */
class list_formatter
{
public:
    using list_entry = std::pair<std::string, std::string>;
    using contents_list = std::vector<list_entry>;

    list_formatter(const std::string& heading, const contents_list& contents = {}, const std::string& empty_placeholder = "")
        : heading_(heading)
        , placeholder_(empty_placeholder)
        , contents_(contents)
    {
    }

    void insert(const std::string& label, const std::string& value)
    {
        contents_.emplace_back(label, value);
    }

    void set_placeholder(const std::string& placeholder)
    {
        placeholder_ = placeholder;
    }

    void stream_put(std::ostream& os) const;

private:
    static const char heading_delimiter;
    static const std::string label_delimiter;

    std::string heading_;
    std::string placeholder_;

    contents_list contents_;
};

const char list_formatter::heading_delimiter = '=';
const std::string list_formatter::label_delimiter = ": ";

void list_formatter::stream_put(std::ostream& os) const
{
    if(!heading_.empty()) {
        os << heading_ << '\n' << std::string(utf8::size(heading_), heading_delimiter) << "\n\n";
    }

    if(contents_.empty() && !placeholder_.empty()) {
        os << placeholder_ << '\n';
    } else if(!contents_.empty()) {
        auto label_length_comparator = [](const list_entry& a, const list_entry& b)
        {
            return utf8::size(a.first) < utf8::size(b.first);
        };

        const auto longest_entry_label = std::max_element(contents_.begin(), contents_.end(), label_length_comparator);
        const std::size_t min_length = longest_entry_label != contents_.end()
                ? utf8::size(label_delimiter) + utf8::size(longest_entry_label->first)
                : 0;

        // Save stream attributes for resetting them later after completing the loop
        const std::size_t prev_width = os.width();
        const std::ostream::fmtflags prev_flags = os.flags();

        os << std::left;

        for(const auto& entry : contents_) {
            os << std::setw(min_length) << entry.first + label_delimiter << entry.second << '\n';
        }

        os.width(prev_width);
        os.flags(prev_flags);
    }

    os << '\n';
}

std::ostream& operator<<(std::ostream& os, const list_formatter& fmt)
{
    fmt.stream_put(os);
    return os;
}

list_formatter library_versions_report_internal(const std::string& heading = "")
{
    list_formatter fmt{heading};

    for(unsigned n = 0; n < LIB_COUNT; ++n)
    {
        if(versions.names[n].empty()) {
            continue;
        }

        std::string text = versions.compiled[n];
        if(!versions.linked[n].empty()) {
            text += " (runtime " + versions.linked[n] + ")";
        }

        fmt.insert(versions.names[n], text);
    }

    return fmt;
}

list_formatter optional_features_report_internal(const std::string& heading = "")
{
    list_formatter fmt{heading};

    const std::vector<optional_feature>& features = optional_features_table(false);

    for(const auto& feature : features) {
        fmt.insert(feature.name, feature.enabled ? "yes" : "no");
    }

    return fmt;
}

template<typename T>
inline std::string geometry_to_string(T horizontal, T vertical)
{
    return std::to_string(horizontal) + 'x' + std::to_string(vertical);
}

std::string format_sdl_driver_list(std::vector<std::string> drivers, const std::string& current_driver)
{
    bool found_current_driver = false;

    for(auto& drvname : drivers) {
        if(current_driver == drvname) {
            found_current_driver = true;
            drvname = "[" + current_driver + "]";
        }
    }

    if(drivers.empty() || !found_current_driver) {
        // This shouldn't happen but SDL is weird at times so whatevs
        drivers.emplace_back("[" + current_driver + "]");
    }

    return utils::join(drivers, " ");
}

list_formatter video_settings_report_internal(const std::string& heading = "")
{
    list_formatter fmt{heading};

    if(!CVideo::setup_completed()) {
        fmt.set_placeholder("Graphics not initialized.");
        return fmt;
    }

    CVideo& video = CVideo::get_singleton();

    std::string placeholder;

    if(video.non_interactive()) {
        placeholder = "Running in non-interactive mode.";
    } else if(!video.has_window()) {
        placeholder = "Running without a game window.";
    }

    if(!placeholder.empty()) {
        fmt.set_placeholder(placeholder);
        return fmt;
    }

    const auto& current_driver = CVideo::current_driver();
    auto drivers = CVideo::enumerate_drivers();

    const auto& dpi = video.get_dpi();
    const auto& scale = video.get_dpi_scale_factor();
    std::string dpi_report, scale_report;

    if(dpi.first == 0.0f || dpi.second == 0.0f) {
        scale_report = dpi_report = "<unknown>";
    } else {
        dpi_report = geometry_to_string(dpi.first, dpi.second);
        scale_report = geometry_to_string(scale.first, scale.second);
    }

    fmt.insert("SDL video drivers", format_sdl_driver_list(drivers, current_driver));
    fmt.insert("Window size", geometry_to_string(video.get_width(), video.get_height()));
    fmt.insert("Screen refresh rate", std::to_string(video.current_refresh_rate()));
    fmt.insert("Screen dots per inch", dpi_report);
    fmt.insert("Screen dpi scale factor", scale_report);

    return fmt;
}

list_formatter sound_settings_report_internal(const std::string& heading = "")
{
    list_formatter fmt{heading};

    const auto& driver_status = sound::driver_status::query();

    if(!driver_status.initialized) {
        fmt.set_placeholder("Audio not initialized.");
        return fmt;
    }

    const auto& current_driver = sound::current_driver();
    auto drivers = sound::enumerate_drivers();

    static std::map<uint16_t, std::string> audio_format_names = {
        // 8 bits
        { AUDIO_U8,     "unsigned 8 bit" },
        { AUDIO_S8,     "signed 8 bit" },
        // 16 bits
        { AUDIO_U16LSB, "unsigned 16 bit little-endian" },
        { AUDIO_U16MSB, "unsigned 16 bit big-endian" },
        { AUDIO_S16LSB, "signed 16 bit little-endian" },
        { AUDIO_S16MSB, "signed 16 bit big-endian" },
        // 32 bits
        { AUDIO_S32LSB, "signed 32 bit little-endian" },
        { AUDIO_S32MSB, "signed 32 bit big-endian" },
        { AUDIO_F32LSB, "signed 32 bit floating point little-endian" },
        { AUDIO_F32MSB, "signed 32 bit floating point big-endian" },
    };

    auto fmt_names_it = audio_format_names.find(driver_status.format);
    // If we don't recognize the format id just print the raw number
    const std::string fmt_name = fmt_names_it != audio_format_names.end()
            ? fmt_names_it->second
            : formatter() << "0x" << std::setfill('0') << std::setw(2*sizeof(driver_status.format)) << std::hex << std::uppercase << driver_status.format;

    fmt.insert("SDL audio drivers", format_sdl_driver_list(drivers, current_driver));
    fmt.insert("Number of channels", std::to_string(driver_status.channels));
    fmt.insert("Output rate", std::to_string(driver_status.frequency) + " Hz");
    fmt.insert("Sample format", fmt_name);
    fmt.insert("Sample size", std::to_string(driver_status.chunk_size) + " bytes");

    return fmt;
}

} // end anonymous namespace 2

std::string library_versions_report()
{
    return formatter{} << library_versions_report_internal();
}

std::string optional_features_report()
{
    return formatter{} << optional_features_report_internal();
}

std::string full_build_report()
{
    list_formatter::contents_list paths{
        {"Data dir",        game_config::path},
        {"User config dir", filesystem::get_user_config_dir()},
        {"User data dir",   filesystem::get_user_data_dir()},
        {"Saves dir",       filesystem::get_saves_dir()},
        {"Add-ons dir",     filesystem::get_addons_dir()},
        {"Cache dir",       filesystem::get_cache_dir()},
    };

    // Obfuscate usernames in paths
    for(auto& entry : paths) {
        entry.second = filesystem::sanitize_path(entry.second);
    }

    list_formatter::contents_list addons;

    for(const auto& addon_info : installed_addons_and_versions()) {
        addons.emplace_back(addon_info.first, addon_info.second);
    }

    std::ostringstream o;

    o << "The Battle for Wesnoth version " << game_config::revision << " " << build_arch() << '\n'
      << "Running on " << desktop::os_version() << '\n'
      << "Distribution channel: " << dist_channel_id() << '\n'
      << '\n'
      << list_formatter{"Game paths", paths}
      << library_versions_report_internal("Libraries")
      << optional_features_report_internal("Features")
      << video_settings_report_internal("Current video settings")
      << sound_settings_report_internal("Current audio settings")
      << list_formatter("Installed add-ons", addons, "No add-ons installed.");

    return o.str();
}

} // end namespace game_config