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extensions.cpp
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// Aseprite
// Copyright (C) 2020-2023 Igara Studio S.A.
// Copyright (C) 2017-2018 David Capello
//
// This program is distributed under the terms of
// the End-User License Agreement for Aseprite.
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "app/extensions.h"
#include "app/app.h"
#include "app/app_menus.h"
#include "app/commands/command.h"
#include "app/commands/commands.h"
#include "app/console.h"
#include "app/ini_file.h"
#include "app/load_matrix.h"
#include "app/pref/preferences.h"
#include "app/resource_finder.h"
#include "base/exception.h"
#include "base/file_content.h"
#include "base/file_handle.h"
#include "base/fs.h"
#include "base/fstream_path.h"
#include "render/dithering_matrix.h"
#include "ui/widget.h"
#if ENABLE_SENTRY
#include "app/sentry_wrapper.h"
#endif
#ifdef ENABLE_SCRIPTING
#include "app/script/engine.h"
#include "app/script/luacpp.h"
#include "app/script/require.h"
#endif
#include "archive.h"
#include "archive_entry.h"
#include "json11.hpp"
#include <fstream>
#include <queue>
#include <sstream>
#include <string>
#include "base/log.h"
namespace app {
namespace {
const char* kPackageJson = "package.json";
const char* kInfoJson = "__info.json";
const char* kPrefLua = "__pref.lua";
const char* kAsepriteDefaultThemeExtensionName = "aseprite-theme";
class ReadArchive {
public:
ReadArchive(const std::string& filename)
: m_arch(nullptr), m_open(false) {
m_arch = archive_read_new();
archive_read_support_format_zip(m_arch);
m_file = base::open_file(filename, "rb");
if (!m_file)
throw base::Exception("Error loading file %s",
filename.c_str());
int err;
if ((err = archive_read_open_FILE(m_arch, m_file.get())))
throw base::Exception("Error uncompressing extension\n%s (%d)",
archive_error_string(m_arch), err);
m_open = true;
}
~ReadArchive() {
if (m_arch) {
if (m_open)
archive_read_close(m_arch);
archive_read_free(m_arch);
}
}
archive_entry* readEntry() {
archive_entry* entry;
int err = archive_read_next_header(m_arch, &entry);
if (err == ARCHIVE_EOF)
return nullptr;
if (err != ARCHIVE_OK)
throw base::Exception("Error uncompressing extension\n%s",
archive_error_string(m_arch));
return entry;
}
int copyDataTo(archive* out) {
const void* buf;
size_t size;
int64_t offset;
for (;;) {
int err = archive_read_data_block(m_arch, &buf, &size, &offset);
if (err == ARCHIVE_EOF)
break;
if (err != ARCHIVE_OK)
return err;
err = archive_write_data_block(out, buf, size, offset);
if (err != ARCHIVE_OK) {
throw base::Exception("Error writing data blocks\n%s (%d)",
archive_error_string(out), err);
return err;
}
}
return ARCHIVE_OK;
}
int copyDataTo(std::ostream& dst) {
const void* buf;
size_t size;
int64_t offset;
for (;;) {
int err = archive_read_data_block(m_arch, &buf, &size, &offset);
if (err == ARCHIVE_EOF)
break;
if (err != ARCHIVE_OK)
return err;
dst.write((const char*)buf, size);
}
return ARCHIVE_OK;
}
private:
base::FileHandle m_file;
archive* m_arch;
bool m_open;
};
class WriteArchive {
public:
WriteArchive()
: m_arch(nullptr)
, m_open(false) {
m_arch = archive_write_disk_new();
m_open = true;
}
~WriteArchive() {
if (m_arch) {
if (m_open)
archive_write_close(m_arch);
archive_write_free(m_arch);
}
}
void writeEntry(ReadArchive& in, archive_entry* entry) {
int err = archive_write_header(m_arch, entry);
if (err != ARCHIVE_OK)
throw base::Exception("Error writing file into disk\n%s (%d)",
archive_error_string(m_arch), err);
in.copyDataTo(m_arch);
err = archive_write_finish_entry(m_arch);
if (err != ARCHIVE_OK)
throw base::Exception("Error saving the last part of a file entry in disk\n%s (%d)",
archive_error_string(m_arch), err);
}
private:
archive* m_arch;
bool m_open;
};
void read_json_file(const std::string& path, json11::Json& json)
{
std::string jsonText, line;
std::ifstream in(FSTREAM_PATH(path), std::ifstream::binary);
while (std::getline(in, line)) {
jsonText += line;
jsonText.push_back('\n');
}
std::string err;
json = json11::Json::parse(jsonText, err);
if (!err.empty())
throw base::Exception("Error parsing JSON file: %s\n",
err.c_str());
}
void write_json_file(const std::string& path, const json11::Json& json)
{
std::string text;
json.dump(text);
std::ofstream out(FSTREAM_PATH(path), std::ifstream::binary);
out.write(text.c_str(), text.size());
}
} // anonymous namespace
//////////////////////////////////////////////////////////////////////
// Extension
Extension::DitheringMatrixInfo::DitheringMatrixInfo()
{
}
Extension::DitheringMatrixInfo::DitheringMatrixInfo(const std::string& path,
const std::string& name)
: m_path(path)
, m_name(name)
{
}
const render::DitheringMatrix& Extension::DitheringMatrixInfo::matrix() const
{
if (!m_loaded) {
load_dithering_matrix_from_sprite(m_path, m_matrix);
m_loaded = true;
}
return m_matrix;
}
Extension::Extension(const std::string& path,
const std::string& name,
const std::string& version,
const std::string& displayName,
const bool isEnabled,
const bool isBuiltinExtension)
: m_path(path)
, m_name(name)
, m_version(version)
, m_displayName(displayName)
, m_category(Category::None)
, m_isEnabled(isEnabled)
, m_isInstalled(true)
, m_isBuiltinExtension(isBuiltinExtension)
{
#ifdef ENABLE_SCRIPTING
m_plugin.pluginRef = LUA_REFNIL;
#endif
}
Extension::~Extension()
{
}
void Extension::executeInitActions()
{
#ifdef ENABLE_SCRIPTING
if (isEnabled() && hasScripts())
initScripts();
#endif
}
void Extension::executeExitActions()
{
#ifdef ENABLE_SCRIPTING
if (isEnabled() && hasScripts())
exitScripts();
#endif // ENABLE_SCRIPTING
}
void Extension::addKeys(const std::string& id, const std::string& path)
{
m_keys[id] = path;
updateCategory(Category::Keys);
}
void Extension::addLanguage(const std::string& id,
const std::string& path,
const std::string& displayName)
{
m_languages[id] = LangInfo(id, path, displayName);
updateCategory(Category::Languages);
}
void Extension::addTheme(const std::string& id,
const std::string& path,
const std::string& variant)
{
m_themes[id] = ThemeInfo(path, variant);
updateCategory(Category::Themes);
}
void Extension::addPalette(const std::string& id, const std::string& path)
{
m_palettes[id] = path;
updateCategory(Category::Palettes);
}
void Extension::addDitheringMatrix(const std::string& id,
const std::string& path,
const std::string& name)
{
DitheringMatrixInfo info(path, name);
m_ditheringMatrices[id] = std::move(info);
updateCategory(Category::DitheringMatrices);
}
#ifdef ENABLE_SCRIPTING
void Extension::addCommand(const std::string& id)
{
PluginItem item;
item.type = PluginItem::Command;
item.id = id;
m_plugin.items.push_back(item);
}
void Extension::removeCommand(const std::string& id)
{
for (auto it=m_plugin.items.begin(); it != m_plugin.items.end(); ) {
if (it->type == PluginItem::Command &&
it->id == id) {
it = m_plugin.items.erase(it);
}
else {
++it;
}
}
}
void Extension::addMenuGroup(const std::string& id)
{
PluginItem item;
item.type = PluginItem::MenuGroup;
item.id = id;
m_plugin.items.push_back(item);
}
void Extension::removeMenuGroup(const std::string& id)
{
for (auto it=m_plugin.items.begin(); it != m_plugin.items.end(); ) {
if (it->type == PluginItem::MenuGroup &&
it->id == id) {
it = m_plugin.items.erase(it);
}
else {
++it;
}
}
}
void Extension::addMenuSeparator(ui::Widget* widget)
{
PluginItem item;
item.type = PluginItem::MenuSeparator;
item.widget = widget;
m_plugin.items.push_back(item);
}
#endif
bool Extension::canBeDisabled() const
{
return (m_isEnabled &&
//!isCurrentTheme() &&
!isDefaultTheme()); // Default theme cannot be disabled or uninstalled
}
bool Extension::canBeUninstalled() const
{
return (!m_isBuiltinExtension &&
// We can uninstall the current theme (e.g. to upgrade it)
//!isCurrentTheme() &&
!isDefaultTheme());
}
void Extension::enable(const bool state)
{
if (m_isEnabled != state) {
set_config_bool("extensions", m_name.c_str(), state);
flush_config_file();
m_isEnabled = state;
}
#ifdef ENABLE_SCRIPTING
if (hasScripts()) {
if (m_isEnabled) {
initScripts();
}
else {
exitScripts();
}
}
#endif // ENABLE_SCRIPTING
}
void Extension::uninstall(const DeletePluginPref delPref)
{
if (!m_isInstalled)
return;
ASSERT(canBeUninstalled());
if (!canBeUninstalled())
return;
TRACE("EXT: Uninstall extension '%s' from '%s'...\n",
m_name.c_str(), m_path.c_str());
// Execute exit actions of scripts
executeExitActions();
// Remove all files inside the extension path
uninstallFiles(m_path, delPref);
m_isEnabled = false;
m_isInstalled = false;
}
void Extension::uninstallFiles(const std::string& path,
const DeletePluginPref delPref)
{
#if 1 // Read the list of files to be uninstalled from __info.json file
std::string infoFn = base::join_path(path, kInfoJson);
if (!base::is_file(infoFn))
throw base::Exception("Cannot remove extension, '%s' file doesn't exist",
infoFn.c_str());
json11::Json json;
read_json_file(infoFn, json);
base::paths installedDirs;
for (const auto& value : json["installedFiles"].array_items()) {
std::string fn = base::join_path(path, value.string_value());
if (base::is_file(fn)) {
TRACE("EXT: Deleting file '%s'\n", fn.c_str());
base::delete_file(fn);
}
else if (base::is_directory(fn)) {
installedDirs.push_back(fn);
}
}
// Delete __pref.lua file (only if specified, e.g. if the user is
// updating the extension, the preferences should be kept).
bool hasPrefFile = false;
{
std::string fn = base::join_path(path, kPrefLua);
if (base::is_file(fn)) {
if (delPref == DeletePluginPref::kYes)
base::delete_file(fn);
else
hasPrefFile = true;
}
}
std::sort(installedDirs.begin(),
installedDirs.end(),
[](const std::string& a,
const std::string& b) {
return b.size() < a.size();
});
for (const auto& dir : installedDirs) {
TRACE("EXT: Deleting directory '%s'\n", dir.c_str());
try {
base::remove_directory(dir);
}
catch (const std::exception& ex) {
LOG(ERROR, "RECO: Extension subdirectory cannot be removed, it's not empty.\n"
" Error: %s\n", ex.what());
}
}
// Delete __info.json file if it does exist (e.g. maybe the
// "installedFiles" list included the __info.json so the file was
// already deleted, this can happen if the .json file was modified
// by hand/the user)
if (base::is_file(infoFn)) {
TRACE("EXT: Deleting file '%s'\n", infoFn.c_str());
base::delete_file(infoFn);
}
TRACE("EXT: Deleting extension directory '%s'\n", path.c_str());
if (!hasPrefFile) {
try {
base::remove_directory(path);
}
catch (const std::exception& ex) {
LOG(ERROR, "RECO: Extension directory cannot be removed, it's not empty.\n"
" Error: %s\n", ex.what());
}
}
#else // The following code delete the whole "path",
// we prefer the __info.json approach.
for (auto& item : base::list_files(path)) {
std::string fn = base::join_path(path, item);
if (base::is_file(fn)) {
TRACE("EXT: Deleting file '%s'\n", fn.c_str());
base::delete_file(fn);
}
else if (base::is_directory(fn)) {
uninstallFiles(fn, deleteUserPref);
}
}
TRACE("EXT: Deleting directory '%s'\n", path.c_str());
base::remove_directory(path);
#endif
}
bool Extension::isCurrentTheme() const
{
auto it = m_themes.find(Preferences::instance().theme.selected());
return (it != m_themes.end());
}
bool Extension::isDefaultTheme() const
{
return (name() == kAsepriteDefaultThemeExtensionName);
}
void Extension::updateCategory(const Category newCategory)
{
if (m_category == Category::None ||
m_category == Category::Keys) {
m_category = newCategory;
}
else if (m_category != newCategory)
m_category = Category::Multiple;
}
#ifdef ENABLE_SCRIPTING
// TODO move this to app/script/tableutils.h
static void serialize_table(lua_State* L, int idx, std::string& result)
{
bool first = true;
result.push_back('{');
idx = lua_absindex(L, idx);
lua_pushnil(L);
while (lua_next(L, idx) != 0) {
if (first) {
first = false;
}
else {
result.push_back(',');
}
// Save key
if (lua_type(L, -2) == LUA_TSTRING) {
if (const char* k = lua_tostring(L, -2)) {
result += k;
result.push_back('=');
}
}
// Save value
switch (lua_type(L, -1)) {
case LUA_TNIL:
default:
result += "nil";
break;
case LUA_TBOOLEAN:
if (lua_toboolean(L, -1))
result += "true";
else
result += "false";
break;
case LUA_TNUMBER:
result += lua_tostring(L, -1);
break;
case LUA_TSTRING:
result.push_back('\"');
if (const char* p = lua_tostring(L, -1)) {
for (; *p; ++p) {
switch (*p) {
case '\"':
result.push_back('\\');
result.push_back('\"');
break;
case '\\':
result.push_back('\\');
result.push_back('\\');
break;
case '\t':
result.push_back('\\');
result.push_back('t');
break;
case '\r':
result.push_back('\\');
result.push_back('n');
break;
case '\n':
result.push_back('\\');
result.push_back('n');
break;
default:
result.push_back(*p);
break;
}
}
}
result.push_back('\"');
break;
case LUA_TTABLE:
serialize_table(L, -1, result);
break;
}
lua_pop(L, 1);
}
result.push_back('}');
}
Extension::ScriptItem::ScriptItem(const std::string& fn)
: fn(fn)
, exitFunctionRef(LUA_REFNIL)
{
}
void Extension::initScripts()
{
script::Engine* engine = App::instance()->scriptEngine();
lua_State* L = engine->luaState();
// Put a new "plugin" object for init()/exit() functions
script::push_plugin(L, this);
m_plugin.pluginRef = luaL_ref(L, LUA_REGISTRYINDEX);
// Set the _PLUGIN global so require() can find .lua files from the
// plugin path.
script::SetPluginForRequire setPlugin(L, m_plugin.pluginRef);
// Read plugin.preferences value
{
std::string fn = base::join_path(m_path, kPrefLua);
if (base::is_file(fn)) {
lua_rawgeti(L, LUA_REGISTRYINDEX, m_plugin.pluginRef);
if (luaL_loadfile(L, fn.c_str()) == LUA_OK) {
if (lua_pcall(L, 0, 1, 0) == LUA_OK) {
lua_setfield(L, -2, "preferences");
}
else {
const char* s = lua_tostring(L, -1);
if (s) {
Console().printf("%s\n", s);
}
}
lua_pop(L, 1);
}
else {
lua_pop(L, 1);
}
}
}
for (auto& script : m_plugin.scripts) {
// Reset global init()/exit() functions
engine->evalCode("init=nil exit=nil");
// Eval the code of the script (it should define an init() and an exit() function)
engine->evalFile(script.fn);
if (lua_getglobal(L, "exit") == LUA_TFUNCTION) {
// Save a reference to the exit() function of this script
script.exitFunctionRef = luaL_ref(L, LUA_REGISTRYINDEX);
}
else {
lua_pop(L, 1);
}
// Call the init() function of this script with a Plugin object as first parameter
if (lua_getglobal(L, "init") == LUA_TFUNCTION) {
// Call init(plugin)
lua_rawgeti(L, LUA_REGISTRYINDEX, m_plugin.pluginRef);
lua_pcall(L, 1, 1, 0);
lua_pop(L, 1);
}
else {
lua_pop(L, 1);
}
}
}
void Extension::exitScripts()
{
script::Engine* engine = App::instance()->scriptEngine();
lua_State* L = engine->luaState();
// Call the exit() function of each script
for (auto& script : m_plugin.scripts) {
if (script.exitFunctionRef != LUA_REFNIL) {
// Get the exit() function, the "plugin" object, and call exit(plugin)
lua_rawgeti(L, LUA_REGISTRYINDEX, script.exitFunctionRef);
lua_rawgeti(L, LUA_REGISTRYINDEX, m_plugin.pluginRef);
lua_pcall(L, 1, 0, 0);
luaL_unref(L, LUA_REGISTRYINDEX, script.exitFunctionRef);
script.exitFunctionRef = LUA_REFNIL;
}
}
// Save the plugin preferences object
if (m_plugin.pluginRef != LUA_REFNIL) {
lua_rawgeti(L, LUA_REGISTRYINDEX, m_plugin.pluginRef);
lua_getfield(L, -1, "preferences");
lua_pushnil(L); // Push a nil key, to ask for the first element of the table
bool hasPreferences = (lua_next(L, -2) != 0);
if (hasPreferences)
lua_pop(L, 2); // Remove the value and the key
if (hasPreferences) {
std::string result = "return ";
serialize_table(L, -1, result);
base::write_file_content(
base::join_path(m_path, kPrefLua),
(const uint8_t*)result.c_str(), result.size());
}
lua_pop(L, 2); // Pop preferences table and plugin
luaL_unref(L, LUA_REGISTRYINDEX, m_plugin.pluginRef);
m_plugin.pluginRef = LUA_REFNIL;
}
// Remove plugin items automatically from back to front (in the
// reverse order that they were added).
for (auto it=m_plugin.items.rbegin(), end=m_plugin.items.rend(); it!=end; ++it) {
auto& item = *it;
switch (item.type) {
case PluginItem::Command: {
auto cmds = Commands::instance();
auto cmd = cmds->byId(item.id.c_str());
ASSERT(cmd);
if (cmd) {
#ifdef ENABLE_UI
// TODO use a signal
AppMenus::instance()->removeMenuItemFromGroup(cmd);
#endif // ENABLE_UI
cmds->remove(cmd);
// This will call ~PluginCommand() and unref the command
// onclick callback.
delete cmd;
}
break;
}
#ifdef ENABLE_UI
case PluginItem::MenuSeparator:
ASSERT(item.widget);
ASSERT(item.widget->parent());
if (item.widget &&
item.widget->parent()) {
// TODO use a signal
AppMenus::instance()->removeMenuItemFromGroup(item.widget);
ASSERT(!item.widget->parent());
item.widget = nullptr;
}
break;
case PluginItem::MenuGroup:
// TODO use a signal
AppMenus::instance()->removeMenuGroup(item.id);
break;
#endif // ENABLE_UI
}
}
m_plugin.items.clear();
}
void Extension::addScript(const std::string& fn)
{
m_plugin.scripts.push_back(ScriptItem(fn));
updateCategory(Category::Scripts);
}
#endif // ENABLE_SCRIPTING
//////////////////////////////////////////////////////////////////////
// Extensions
Extensions::Extensions()
{
// Create and get the user extensions directory
{
ResourceFinder rf2;
rf2.includeUserDir("extensions/.");
m_userExtensionsPath = rf2.getFirstOrCreateDefault();
m_userExtensionsPath = base::normalize_path(m_userExtensionsPath);
if (!m_userExtensionsPath.empty() &&
m_userExtensionsPath.back() == '.') {
m_userExtensionsPath = base::get_file_path(m_userExtensionsPath);
}
LOG("EXT: User extensions path '%s'\n", m_userExtensionsPath.c_str());
}
ResourceFinder rf;
rf.includeUserDir("extensions");
rf.includeDataDir("extensions");
// Load extensions from data/ directory on all possible locations
// (installed folder and user folder)
while (rf.next()) {
auto extensionsDir = rf.filename();
if (base::is_directory(extensionsDir)) {
for (auto fn : base::list_files(extensionsDir)) {
const auto dir = base::join_path(extensionsDir, fn);
if (!base::is_directory(dir))
continue;
const bool isBuiltinExtension =
(m_userExtensionsPath != base::get_file_path(dir));
auto fullFn = base::join_path(dir, kPackageJson);
fullFn = base::normalize_path(fullFn);
LOG("EXT: Loading extension '%s'...\n", fullFn.c_str());
if (!base::is_file(fullFn)) {
LOG("EXT: File '%s' not found\n", fullFn.c_str());
continue;
}
try {
loadExtension(dir, fullFn, isBuiltinExtension);
}
catch (const std::exception& ex) {
LOG("EXT: Error loading JSON file: %s\n",
ex.what());
}
}
}
}
}
Extensions::~Extensions()
{
for (auto ext : m_extensions)
delete ext;
}
void Extensions::executeInitActions()
{
for (auto& ext : m_extensions)
ext->executeInitActions();
ScriptsChange(nullptr);
}
void Extensions::executeExitActions()
{
for (auto& ext : m_extensions)
ext->executeExitActions();
ScriptsChange(nullptr);
}
std::string Extensions::languagePath(const std::string& langId)
{
for (auto ext : m_extensions) {
if (!ext->isEnabled()) // Ignore disabled extensions
continue;
auto it = ext->languages().find(langId);
if (it != ext->languages().end())
return it->second.path;
}
return std::string();
}
std::string Extensions::themePath(const std::string& themeId)
{
for (auto ext : m_extensions) {
if (!ext->isEnabled()) // Ignore disabled extensions
continue;
auto it = ext->themes().find(themeId);
if (it != ext->themes().end())
return it->second.path;
}
return std::string();
}
std::string Extensions::palettePath(const std::string& palId)
{
for (auto ext : m_extensions) {
if (!ext->isEnabled()) // Ignore disabled extensions
continue;
auto it = ext->palettes().find(palId);
if (it != ext->palettes().end())
return it->second;
}
return std::string();
}
ExtensionItems Extensions::palettes() const
{
ExtensionItems palettes;
for (auto ext : m_extensions) {
if (!ext->isEnabled()) // Ignore disabled themes
continue;
for (auto item : ext->palettes())
palettes[item.first] = item.second;
}
return palettes;
}
const render::DitheringMatrix* Extensions::ditheringMatrix(const std::string& matrixId)
{
for (auto ext : m_extensions) {
if (!ext->isEnabled()) // Ignore disabled themes
continue;
auto it = ext->m_ditheringMatrices.find(matrixId);
if (it != ext->m_ditheringMatrices.end())
return &it->second.matrix();
}
return nullptr;
}
std::vector<Extension::DitheringMatrixInfo> Extensions::ditheringMatrices()
{
std::vector<Extension::DitheringMatrixInfo> result;
for (auto ext : m_extensions) {
if (!ext->isEnabled()) // Ignore disabled themes
continue;
for (auto it : ext->m_ditheringMatrices)
result.push_back(it.second);
}
return result;
}
void Extensions::enableExtension(Extension* extension, const bool state)
{
extension->enable(state);
generateExtensionSignals(extension);
}
void Extensions::uninstallExtension(Extension* extension,
const DeletePluginPref delPref)
{
extension->uninstall(delPref);
generateExtensionSignals(extension);
auto it = std::find(m_extensions.begin(),
m_extensions.end(), extension);
ASSERT(it != m_extensions.end());
if (it != m_extensions.end())
m_extensions.erase(it);
delete extension;
}
ExtensionInfo Extensions::getCompressedExtensionInfo(const std::string& zipFn)
{
ExtensionInfo info;
info.dstPath =
base::join_path(m_userExtensionsPath,
base::get_file_title(zipFn));
// First of all we read the package.json file inside the .zip to
// know 1) the extension name, 2) that the .json file can be parsed
// correctly, 3) the final destination directory.
ReadArchive in(zipFn);
archive_entry* entry;
while ((entry = in.readEntry()) != nullptr) {
const char* entryFnPtr = archive_entry_pathname(entry);
// This can happen, e.g. if the file contains "!" + unicode chars
// (maybe a bug in archive library?)
// TODO try to find the real cause of this on libarchive
if (!entryFnPtr)
continue;
const std::string entryFn = entryFnPtr;
if (base::get_file_name(entryFn) != kPackageJson)
continue;
info.commonPath = base::get_file_path(entryFn);
if (!info.commonPath.empty() &&
entryFn.size() > info.commonPath.size()) {
info.commonPath.push_back(entryFn[info.commonPath.size()]);
}
std::stringstream out;