diff options
Diffstat (limited to 'launcher/mojang/PackageManifest.cpp')
| -rw-r--r-- | launcher/mojang/PackageManifest.cpp | 427 |
1 files changed, 0 insertions, 427 deletions
diff --git a/launcher/mojang/PackageManifest.cpp b/launcher/mojang/PackageManifest.cpp deleted file mode 100644 index b3dfd7fc..00000000 --- a/launcher/mojang/PackageManifest.cpp +++ /dev/null @@ -1,427 +0,0 @@ -#include "PackageManifest.h" -#include <Json.h> -#include <QDir> -#include <QDirIterator> -#include <QCryptographicHash> -#include <QDebug> - -#ifndef Q_OS_WIN32 -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> -#endif - -namespace mojang_files { - -const Hash hash_of_empty_string = "da39a3ee5e6b4b0d3255bfef95601890afd80709"; - -int Path::compare(const Path& rhs) const -{ - auto left_cursor = begin(); - auto left_end = end(); - auto right_cursor = rhs.begin(); - auto right_end = rhs.end(); - - while (left_cursor != left_end && right_cursor != right_end) - { - if(*left_cursor < *right_cursor) - { - return -1; - } - else if(*left_cursor > *right_cursor) - { - return 1; - } - left_cursor++; - right_cursor++; - } - - if(left_cursor == left_end) - { - if(right_cursor == right_end) - { - return 0; - } - return -1; - } - return 1; -} - -void Package::addFile(const Path& path, const File& file) { - addFolder(path.parent_path()); - files[path] = file; -} - -void Package::addFolder(Path folder) { - if(!folder.has_parent_path()) { - return; - } - do { - folders.insert(folder); - folder = folder.parent_path(); - } while(folder.has_parent_path()); -} - -void Package::addLink(const Path& path, const Path& target) { - addFolder(path.parent_path()); - symlinks[path] = target; -} - -void Package::addSource(const FileSource& source) { - sources[source.hash] = source; -} - - -namespace { -void fromJson(QJsonDocument & doc, Package & out) { - std::set<Path> seen_paths; - if (!doc.isObject()) - { - throw JSONValidationError("file manifest is not an object"); - } - QJsonObject root = doc.object(); - - auto filesObj = Json::ensureObject(root, "files"); - auto iter = filesObj.begin(); - while (iter != filesObj.end()) - { - Path objectPath = Path(iter.key()); - auto value = iter.value(); - iter++; - if(seen_paths.count(objectPath)) { - throw JSONValidationError("duplicate path inside manifest, the manifest is invalid"); - } - if (!value.isObject()) - { - throw JSONValidationError("file entry inside manifest is not an an object"); - } - seen_paths.insert(objectPath); - - auto fileObject = value.toObject(); - auto type = Json::requireString(fileObject, "type"); - if(type == "directory") { - out.addFolder(objectPath); - continue; - } - else if(type == "file") { - FileSource bestSource; - File file; - file.executable = Json::ensureBoolean(fileObject, QString("executable"), false); - auto downloads = Json::requireObject(fileObject, "downloads"); - for(auto iter2 = downloads.begin(); iter2 != downloads.end(); iter2++) { - FileSource source; - - auto downloadObject = Json::requireObject(iter2.value()); - source.hash = Json::requireString(downloadObject, "sha1"); - source.size = Json::requireInteger(downloadObject, "size"); - source.url = Json::requireString(downloadObject, "url"); - - auto compression = iter2.key(); - if(compression == "raw") { - file.hash = source.hash; - file.size = source.size; - source.compression = Compression::Raw; - } - else if (compression == "lzma") { - source.compression = Compression::Lzma; - } - else { - continue; - } - bestSource.upgrade(source); - } - if(bestSource.isBad()) { - throw JSONValidationError("No valid compression method for file " + iter.key()); - } - out.addFile(objectPath, file); - out.addSource(bestSource); - } - else if(type == "link") { - auto target = Json::requireString(fileObject, "target"); - out.symlinks[objectPath] = target; - out.addLink(objectPath, target); - } - else { - throw JSONValidationError("Invalid item type in manifest: " + type); - } - } - // make sure the containing folder exists - out.folders.insert(Path()); -} -} - -Package Package::fromManifestContents(const QByteArray& contents) -{ - Package out; - try - { - auto doc = Json::requireDocument(contents, "Manifest"); - fromJson(doc, out); - return out; - } - catch (const Exception &e) - { - qDebug() << QString("Unable to parse manifest: %1").arg(e.cause()); - out.valid = false; - return out; - } -} - -Package Package::fromManifestFile(const QString & filename) { - Package out; - try - { - auto doc = Json::requireDocument(filename, filename); - fromJson(doc, out); - return out; - } - catch (const Exception &e) - { - qDebug() << QString("Unable to parse manifest file %1: %2").arg(filename, e.cause()); - out.valid = false; - return out; - } -} - -#ifndef Q_OS_WIN32 - -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> - -namespace { -// FIXME: Qt obscures symlink targets by making them absolute. that is useless. this is the workaround - we do it ourselves -bool actually_read_symlink_target(const QString & filepath, Path & out) -{ - struct ::stat st; - // FIXME: here, we assume the native filesystem encoding. May the Gods have mercy upon our Souls. - QByteArray nativePath = filepath.toUtf8(); - const char * filepath_cstr = nativePath.data(); - - if (lstat(filepath_cstr, &st) != 0) - { - return false; - } - - auto size = st.st_size ? st.st_size + 1 : PATH_MAX; - std::string temp(size, '\0'); - // because we don't realiably know how long the damn thing actually is, we loop and expand. POSIX is naff - do - { - auto link_length = ::readlink(filepath_cstr, &temp[0], temp.size()); - if(link_length == -1) - { - return false; - } - if(std::string::size_type(link_length) < temp.size()) - { - // buffer was long enough and we managed to read the link target. RETURN here. - temp.resize(link_length); - out = Path(QString::fromUtf8(temp.c_str())); - return true; - } - temp.resize(temp.size() * 2); - } while (true); -} -} -#endif - -// FIXME: Qt filesystem abstraction is bad, but ... let's hope it doesn't break too much? -// FIXME: The error handling is just DEFICIENT -Package Package::fromInspectedFolder(const QString& folderPath) -{ - QDir root(folderPath); - - Package out; - QDirIterator iterator(folderPath, QDir::NoDotAndDotDot | QDir::AllEntries | QDir::System | QDir::Hidden, QDirIterator::Subdirectories); - while(iterator.hasNext()) { - iterator.next(); - - auto fileInfo = iterator.fileInfo(); - auto relPath = root.relativeFilePath(fileInfo.filePath()); - // FIXME: this is probably completely busted on Windows anyway, so just disable it. - // Qt makes shit up and doesn't understand the platform details - // TODO: Actually use a filesystem library that isn't terrible and has decen license. - // I only know one, and I wrote it. Sadly, currently proprietary. PAIN. -#ifndef Q_OS_WIN32 - if(fileInfo.isSymLink()) { - Path targetPath; - if(!actually_read_symlink_target(fileInfo.filePath(), targetPath)) { - qCritical() << "Folder inspection: Unknown filesystem object:" << fileInfo.absoluteFilePath(); - out.valid = false; - } - out.addLink(relPath, targetPath); - } - else -#endif - if(fileInfo.isDir()) { - out.addFolder(relPath); - } - else if(fileInfo.isFile()) { - File f; - f.executable = fileInfo.isExecutable(); - f.size = fileInfo.size(); - // FIXME: async / optimize the hashing - QFile input(fileInfo.absoluteFilePath()); - if(!input.open(QIODevice::ReadOnly)) { - qCritical() << "Folder inspection: Failed to open file:" << fileInfo.absoluteFilePath(); - out.valid = false; - break; - } - f.hash = QCryptographicHash::hash(input.readAll(), QCryptographicHash::Sha1).toHex().constData(); - out.addFile(relPath, f); - } - else { - // Something else... oh my - qCritical() << "Folder inspection: Unknown filesystem object:" << fileInfo.absoluteFilePath(); - out.valid = false; - break; - } - } - out.folders.insert(Path(".")); - out.valid = true; - return out; -} - -namespace { -struct shallow_first_sort -{ - bool operator()(const Path &lhs, const Path &rhs) const - { - auto lhs_depth = lhs.length(); - auto rhs_depth = rhs.length(); - if(lhs_depth < rhs_depth) - { - return true; - } - else if(lhs_depth == rhs_depth) - { - if(lhs < rhs) - { - return true; - } - } - return false; - } -}; - -struct deep_first_sort -{ - bool operator()(const Path &lhs, const Path &rhs) const - { - auto lhs_depth = lhs.length(); - auto rhs_depth = rhs.length(); - if(lhs_depth > rhs_depth) - { - return true; - } - else if(lhs_depth == rhs_depth) - { - if(lhs < rhs) - { - return true; - } - } - return false; - } -}; -} - -UpdateOperations UpdateOperations::resolve(const Package& from, const Package& to) -{ - UpdateOperations out; - - if(!from.valid || !to.valid) { - out.valid = false; - return out; - } - - // Files - for(auto iter = from.files.begin(); iter != from.files.end(); iter++) { - const auto ¤t_hash = iter->second.hash; - const auto ¤t_executable = iter->second.executable; - const auto &path = iter->first; - - auto iter2 = to.files.find(path); - if(iter2 == to.files.end()) { - // removed - out.deletes.push_back(path); - continue; - } - auto new_hash = iter2->second.hash; - auto new_executable = iter2->second.executable; - if (current_hash != new_hash) { - out.deletes.push_back(path); - out.downloads.emplace( - std::pair<Path, FileDownload>{ - path, - FileDownload(to.sources.at(iter2->second.hash), iter2->second.executable) - } - ); - } - else if (current_executable != new_executable) { - out.executable_fixes[path] = new_executable; - } - } - for(auto iter = to.files.begin(); iter != to.files.end(); iter++) { - auto path = iter->first; - if(!from.files.count(path)) { - out.downloads.emplace( - std::pair<Path, FileDownload>{ - path, - FileDownload(to.sources.at(iter->second.hash), iter->second.executable) - } - ); - } - } - - // Folders - std::set<Path, deep_first_sort> remove_folders; - std::set<Path, shallow_first_sort> make_folders; - for(auto from_path: from.folders) { - auto iter = to.folders.find(from_path); - if(iter == to.folders.end()) { - remove_folders.insert(from_path); - } - } - for(auto & rmdir: remove_folders) { - out.rmdirs.push_back(rmdir); - } - for(auto to_path: to.folders) { - auto iter = from.folders.find(to_path); - if(iter == from.folders.end()) { - make_folders.insert(to_path); - } - } - for(auto & mkdir: make_folders) { - out.mkdirs.push_back(mkdir); - } - - // Symlinks - for(auto iter = from.symlinks.begin(); iter != from.symlinks.end(); iter++) { - const auto ¤t_target = iter->second; - const auto &path = iter->first; - - auto iter2 = to.symlinks.find(path); - if(iter2 == to.symlinks.end()) { - // removed - out.deletes.push_back(path); - continue; - } - const auto &new_target = iter2->second; - if (current_target != new_target) { - out.deletes.push_back(path); - out.mklinks[path] = iter2->second; - } - } - for(auto iter = to.symlinks.begin(); iter != to.symlinks.end(); iter++) { - auto path = iter->first; - if(!from.symlinks.count(path)) { - out.mklinks[path] = iter->second; - } - } - out.valid = true; - return out; -} - -} |