diff options
Diffstat (limited to 'backend/steam.py')
| -rw-r--r-- | backend/steam.py | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/backend/steam.py b/backend/steam.py new file mode 100644 index 0000000..c2e90b0 --- /dev/null +++ b/backend/steam.py @@ -0,0 +1,187 @@ +"""Steam library discovery and conservative executable selection.""" + +import re +import subprocess +from pathlib import Path +from typing import Callable + + +Logger = Callable[[str], None] + +BAD_EXE_SUBSTRINGS = [ + "crashreport", + "crashreportclient", + "eac", + "easyanticheat", + "beclient", + "eosbootstrap", + "benchmark", + "uninstall", + "setup", + "launcher", + "updater", + "bootstrap", + "_redist", + "prereq", +] + + +class SteamLibrary: + def __init__(self, home: Path, logger: Logger): + self.home = home + self.logger = logger + + def steam_common_path(self) -> Path: + return self.home / ".local" / "share" / "Steam" / "steamapps" / "common" + + def _steam_root_candidates(self) -> list[Path]: + candidates = [ + self.home / ".local" / "share" / "Steam", + self.home / ".steam" / "steam", + self.home / ".steam" / "root", + self.home / ".var" / "app" / "com.valvesoftware.Steam" / "home" / ".local" / "share" / "Steam", + self.home / ".var" / "app" / "com.valvesoftware.Steam" / "home" / ".steam" / "steam", + ] + unique: list[Path] = [] + seen: set[str] = set() + for candidate in candidates: + key = str(candidate) + if key not in seen: + unique.append(candidate) + seen.add(key) + return unique + + def _steam_library_paths(self) -> list[Path]: + library_paths: list[Path] = [] + seen: set[str] = set() + for steam_root in self._steam_root_candidates(): + if steam_root.exists() and str(steam_root) not in seen: + library_paths.append(steam_root) + seen.add(str(steam_root)) + library_file = steam_root / "steamapps" / "libraryfolders.vdf" + if not library_file.exists(): + continue + try: + for line in library_file.read_text(encoding="utf-8", errors="replace").splitlines(): + if '"path"' not in line: + continue + path = line.split('"path"', 1)[1].strip().strip('"').replace("\\\\", "/") + candidate = Path(path) + if str(candidate) not in seen: + library_paths.append(candidate) + seen.add(str(candidate)) + except OSError as exc: + self.logger(f"[Framegen] failed to parse libraryfolders: {library_file}: {exc}") + return library_paths + + def find_installed_games(self, appid: str | None = None) -> list[dict]: + games: list[dict] = [] + for library_path in self._steam_library_paths(): + steamapps_path = library_path / "steamapps" + if not steamapps_path.exists(): + continue + for appmanifest in steamapps_path.glob("appmanifest_*.acf"): + game_info: dict = { + "appid": "", + "name": "", + "library_path": str(library_path), + "install_path": "", + } + install_dir = "" + try: + for line in appmanifest.read_text(encoding="utf-8", errors="replace").splitlines(): + if '"appid"' in line: + game_info["appid"] = line.split('"appid"', 1)[1].strip().strip('"') + elif '"name"' in line: + game_info["name"] = line.split('"name"', 1)[1].strip().strip('"') + elif '"installdir"' in line: + install_dir = line.split('"installdir"', 1)[1].strip().strip('"') + except OSError as exc: + self.logger(f"[Framegen] skipping manifest {appmanifest}: {exc}") + continue + if not game_info["appid"] or not game_info["name"]: + continue + if "Proton" in game_info["name"] or "Steam Linux Runtime" in game_info["name"]: + continue + game_info["install_path"] = str(steamapps_path / "common" / install_dir) if install_dir else str(Path()) + if appid is None or str(game_info["appid"]) == str(appid): + games.append(game_info) + deduped = {str(game["appid"]): game for game in games} + return sorted(deduped.values(), key=lambda game: game["name"].lower()) + + def game_record(self, appid: str) -> dict | None: + matches = self.find_installed_games(appid) + return matches[0] if matches else None + + @staticmethod + def normalized_path_string(value: str) -> str: + normalized = value.lower().replace("\\", "/") + normalized = normalized.replace("z:/", "/") + return normalized.replace("//", "/") + + def candidate_executables(self, install_root: Path) -> list[Path]: + if not install_root.exists(): + return [] + try: + return [exe for exe in install_root.rglob("*.exe") if exe.is_file()] + except OSError as exc: + self.logger(f"[Framegen] exe scan failed for {install_root}: {exc}") + return [] + + def _exe_score(self, exe: Path, install_root: Path, game_name: str) -> int: + normalized = self.normalized_path_string(str(exe)) + name = exe.name.lower() + score = 0 + if normalized.endswith("-win64-shipping.exe"): + score += 300 + if "shipping.exe" in name: + score += 220 + if "/binaries/win64/" in normalized: + score += 200 + if "/win64/" in normalized: + score += 80 + if exe.parent == install_root: + score += 20 + sanitized_game = re.sub(r"[^a-z0-9]", "", game_name.lower()) + sanitized_name = re.sub(r"[^a-z0-9]", "", exe.stem.lower()) + sanitized_root = re.sub(r"[^a-z0-9]", "", install_root.name.lower()) + if sanitized_game and sanitized_game in sanitized_name: + score += 120 + if sanitized_root and sanitized_root in sanitized_name: + score += 90 + for bad in BAD_EXE_SUBSTRINGS: + if bad in normalized: + score -= 200 + return score - len(exe.parts) + + def best_running_executable(self, candidates: list[Path]) -> Path | None: + if not candidates: + return None + try: + result = subprocess.run(["ps", "-eo", "args="], capture_output=True, text=True, check=False) + process_lines = result.stdout.splitlines() + except OSError as exc: + self.logger(f"[Framegen] running exe scan failed: {exc}") + return None + normalized_candidates = [(exe, self.normalized_path_string(str(exe))) for exe in candidates] + matches: list[tuple[int, Path]] = [] + for line in process_lines: + normalized_line = self.normalized_path_string(line) + for exe, normalized_exe in normalized_candidates: + if normalized_exe in normalized_line: + matches.append((len(normalized_exe), exe)) + return max(matches, key=lambda item: item[0])[1] if matches else None + + def guess_patch_target(self, game_info: dict) -> tuple[Path, Path | None]: + install_root = Path(game_info["install_path"]) + candidates = self.candidate_executables(install_root) + if not candidates: + return install_root, None + running_exe = self.best_running_executable(candidates) + if running_exe: + return running_exe.parent, running_exe + best = max(candidates, key=lambda exe: self._exe_score(exe, install_root, game_info["name"])) + return best.parent, best + + def is_game_running(self, game_info: dict) -> bool: + return self.best_running_executable(self.candidate_executables(Path(game_info["install_path"]))) is not None |