Gamer-Server-Utility-Scripts/Factorio/mod_updater.py

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#!/usr/bin/python3
"""
This module provides a simple method to manage updating and installing mods
on a given factorio server.
It is currently not intended to be imported and instead should be executed
directly as a python script.
"""
import argparse
from collections import OrderedDict
from datetime import datetime
from enum import Enum, auto
import glob
import hashlib
import json
import os
import re
import shutil
import subprocess
import sys
# External URL processing library
# http://docs.python-requests.org/en/master/user/quickstart/
import requests
def _validate_hash(checksum: str, target: str, bsize: int = 65536) -> bool:
"""
Checks to see if the file specified by target matches the provided sha1
checksum.
Keyword Arguments:
checksum -- sha1 digest to be matched
target -- path to the file which must be validated
"""
hasher = hashlib.sha1()
with open(target, "rb") as target_fp:
block = target_fp.read(bsize)
while len(block) > 0:
hasher.update(block)
block = target_fp.read(bsize)
return hasher.hexdigest() == checksum
def _version_match(installed: str, mod: str):
"""Checks if factorio versions are compatible."""
if installed.startswith("1.") and mod == "0.18":
return True
return installed == mod
class ModUpdater:
"""
Internal class managing the current version and state of the mods on this
server.
"""
MOD_VERSION_PATTERN = r"\d+[.]\d+[.]\d+"
MOD_FILE_PATTERN = "^(.*)_({version})[.]zip$".format(version=MOD_VERSION_PATTERN)
class Mode(Enum):
"""Possible execution modes"""
LIST = auto()
UPDATE = auto()
def __init__(
self,
settings_path: str,
data_path: str,
mod_path: str,
fact_path: str,
creds: hash,
title_mode: bool,
):
"""
Initialize the updater class with all mandatory and optional arguments.
Keyword arguments:
settings_path -- absolute path to the server-settings.json file
mod_path -- absolute path to the factorio mod directory
fact_ver -- local factorio version
"""
self.mod_server_url = "https://mods.factorio.com"
self.mod_path = mod_path
self.timestamp = datetime.utcnow()
self.title_mode = title_mode
# Get the credentials to download mods
if settings_path is not None:
self.settings = self._parse_settings(settings_path)
else:
self.settings = {}
if data_path is not None:
self.data = self._parse_settings(data_path)
else:
self.data = {}
# Parse username and token
if "username" in creds and creds["username"] is not None:
self.username = creds["username"]
elif "username" in self.settings:
self.username = self.settings["username"]
elif "service-username" in self.data:
self.username = self.data["service-username"]
else:
self.token = None
if "token" in creds and creds["token"] is not None:
self.token = creds["token"]
elif "token" in self.settings:
self.token = self.settings["token"]
elif "service-token" in self.data:
self.token = self.data["service-token"]
else:
self.token = None
# Ensure username and token were specified
if self.username is None or self.username == "":
errmsg = (
"error: username not specified in "
+ "server-settings.json, player-data.json, or cli!"
)
print(errmsg, file=sys.stderr)
sys.exit(1)
if self.token is None or self.token == "":
errmsg = (
"error: token not specified in "
+ "server-settings.json, player-data.json, or cli!"
)
print(errmsg, file=sys.stderr)
sys.exit(1)
# Begin processing
self._determine_version(fact_path)
self._parse_mod_list()
self._retrieve_metadata()
self._determine_max_name_lengths()
if self.title_mode:
self.mods = OrderedDict(
sorted(self.mods.items(), key=lambda mod: mod[1]["title"])
)
else:
self.mods = OrderedDict(sorted(self.mods.items()))
def _determine_version(self, fact_path: str):
"""Determine the local factorio version"""
if not os.path.exists(fact_path):
errmsg = "error: factorio binary '{fpath_path}' does not exist!"
print(errmsg, file=sys.stderr)
sys.exit(1)
try:
output = subprocess.check_output(
[fact_path, "--version"], universal_newlines=True
)
ver_re = re.compile(r"Version: (\d+)[.](\d+)[.](\d+) .*\n", re.RegexFlag.M)
match = ver_re.match(output)
if match:
version = {}
version["major"] = match.group(1)
version["minor"] = match.group(2)
version["patch"] = match.group(3)
version["release"] = "{}.{}".format(version["major"], version["minor"])
self.fact_version = version
else:
errmsg = "Unable to parse version from:\n{output}".format(output=output)
print(errmsg, file=sys.stderr)
sys.exit("1")
except subprocess.CalledProcessError as error:
errmsg = ("error: failed to run '{fpath} --version': " "{errstr}").format(
fpath=fact_path, errstr=error.stderr
)
print(errmsg, file=sys.stderr)
sys.exit(1)
print(
"Factorio Release: {release}\n".format(release=self.fact_version["release"])
)
@staticmethod
def _parse_settings(config_path: str):
"""Process the specified server-settings.json or player-data.json file."""
try:
with open(config_path, "r") as config_fp:
return json.load(config_fp)
except IOError as error:
errmsg = ("error: failed to open file '{fname}': " "{errstr}").format(
fname=config_path, errstr=error.strerror
)
print(errmsg, file=sys.stderr)
sys.exit(1)
except json.JSONDecodeError as error:
errmsg = ("error: failed to parse json file '{fname}': " "{errstr}").format(
fname=config_path, errstr=error.msg
)
print(errmsg, file=sys.stderr)
sys.exit(1)
def _retrieve_metadata(self):
"""
Pull the latest metadata for each mod from the factorio server
See https://wiki.factorio.com/Mod_portal_API for details
"""
print("Retrieving metadata", end="")
for mod, data in self.mods.items():
self._retrieve_mod_metadata(mod)
print(".", end="", flush=True)
print("complete!\n")
# Add missing dependencies to the overall list
while True:
missing_mods = []
for mod, data in self.mods.items():
if "missing_deps" in data:
missing_mods.extend(data["missing_deps"])
unique_missing = set(missing_mods)
for mod in self.mods.keys():
if mod in unique_missing:
unique_missing.remove(mod)
if len(unique_missing) == 0:
break
for mod in unique_missing:
entry = {}
entry["enabled"] = True
entry["installed"] = False
self.mods[mod] = entry
self._retrieve_mod_metadata(mod)
print("Info: adding missing dependency {dep}".format(dep=mod))
for mod, data in self.mods.items():
if "metadata" not in data:
warnmsg = (
"Warning: Unable to retrieve metadata for"
" {mod}, skipped!".format(mod=mod)
)
print(warnmsg)
def _retrieve_mod_metadata(self, mod: str):
"""
Attempts to retrieve the metadata for the target mod. If found, the
data object is updated with the 'metadata' key and the 'latest' keys.
"""
data = self.mods[mod]
mod_url = self.mod_server_url + "/api/mods/" + mod + "/full"
with requests.get(mod_url) as req:
if req.status_code == 200:
data["metadata"] = req.json()
if "metadata" in data:
# Find the latest release for this version of Factorio
matching_releases = []
for rel in data["metadata"]["releases"]:
rel_ver = rel["info_json"]["factorio_version"]
if _version_match(installed=self.fact_version["release"], mod=rel_ver):
matching_releases.append(rel)
if len(matching_releases) > 0:
data["latest"] = matching_releases[-1]
# Add title key
data["title"] = data["metadata"]["title"]
# Mark whether it's deprecated
data["deprecated"] = data["metadata"].get("deprecated", False)
else:
data["title"] = mod
# Assume not deprecated if we can't find it
data["deprecated"] = False
if "latest" in data:
self._resolve_dependencies(mod)
def _resolve_dependencies(self, mod: str):
"""
Processes the dependency list for this mod and returns an array
listing those which are not currently enabled. Note that this skips
exclusions and optional dependencies. (! and ?)
"""
data = self.mods[mod]
if "latest" in data:
data["missing_deps"] = []
data["dependencies"] = {}
dependencies = data["latest"]["info_json"]["dependencies"]
# Preparation for future explicit version matching
dep_pattern = re.compile(r"^([\w -]+) ([<=>][=])? (\d+[.]\d+[.]\d+)$")
for dep_entry in dependencies:
match = dep_pattern.fullmatch(dep_entry)
if match:
dep = {}
dep_name = match.group(1)
if dep_name == "base":
continue
dep["argument"] = match.group(2)
dep["version"] = match.group(3)
data["dependencies"][match.group(1)] = dep
for dep_name in data["dependencies"].keys():
if dep_name not in self.mods:
data["missing_deps"].append(dep_name)
def _parse_mod_list(self):
"""Process the mod-list.json within mod_path."""
mod_list_path = os.path.join(self.mod_path, "mod-list.json")
try:
settings_fp = open(mod_list_path, "r")
mod_json = json.load(settings_fp)
self.mods = {}
if "mods" in mod_json:
for mod in mod_json["mods"]:
entry = {}
entry["enabled"] = mod["enabled"]
self.mods[mod["name"]] = entry
else:
print(
"Invalid mod-list.json file \
'{path}'!".format(
path=mod_list_path
),
file=sys.stderr,
)
sys.exit(1)
# Remove the 'base' mod as it's not relevant to this process
if "base" in self.mods:
del self.mods["base"]
except IOError as error:
errmsg = ("error: failed to open file '{fname}': " "{errstr}").format(
fname=mod_list_path, errstr=error.strerror
)
print(errmsg, file=sys.stderr)
sys.exit(1)
except json.JSONDecodeError as error:
errmsg = ("error: failed to parse json file '{fname}': " "{errstr}").format(
fname=mod_list_path, errstr=error.msg
)
print(errmsg, file=sys.stderr)
sys.exit(1)
# Collect the installed state & versions
self.mod_files = glob.glob("{mod_path}/*.zip".format(mod_path=self.mod_path))
installed_mods = {}
mod_pattern = re.compile(self.MOD_FILE_PATTERN)
for entry in self.mod_files:
basename = os.path.basename(entry)
match = mod_pattern.fullmatch(basename)
if match:
installed_mods[match.group(1)] = match.group(2)
for mod, data in self.mods.items():
if mod in installed_mods:
data["installed"] = True
data["version"] = installed_mods[mod]
else:
data["installed"] = False
def _update_mod_list(self):
"""
Generates an updated mod-list.json file which takes into account any
newly added dependencies.
"""
# Build the simplified object for json output
mod_list_output = {}
mod_list_output["mods"] = []
for mod, data in self.mods.items():
mod_entry = {}
mod_entry["name"] = mod
mod_entry["enabled"] = data["enabled"]
mod_list_output["mods"].append(mod_entry)
# Rename the old mod-list file with a timestamp
mod_list_path = os.path.join(self.mod_path, "mod-list.json")
mod_list_backup_path = os.path.join(
self.mod_path,
"mod-list.{timestamp}.json".format(
timestamp=self.timestamp.strftime("%Y-%m-%d_%H%M.%S")
),
)
try:
os.rename(src=mod_list_path, dst=mod_list_backup_path)
except IOError as error:
errmsg = (
"error: failed to rename file '{s}' to '{d}': " "{errstr}"
).format(s=mod_list_path, d=mod_list_backup_path, errstr=error.strerror)
print(errmsg, file=sys.stderr)
sys.exit(1)
# Store the current mod list
try:
mod_list_fp = open(mod_list_path, "w")
mod_list_fp.write(json.dumps(mod_list_output, indent=2, sort_keys=True))
except IOError as error:
errmsg = (
"error: failed to store updated mod list file '{s}': " "{errstr}"
).format(s=mod_list_path, errstr=error.strerror)
print(errmsg, file=sys.stderr)
sys.exit(1)
def _determine_max_name_lengths(self):
"""Returns the length of the longest mod name"""
max_mod_len = 0
max_cver_len = 0
max_lver_len = 0
for mod, data in self.mods.items():
mod_len = len(data["title"]) if self.title_mode else len(mod)
max_mod_len = mod_len if mod_len > max_mod_len else max_mod_len
cver_len = len(data["version"]) if data["installed"] else len("Version")
max_cver_len = cver_len if cver_len > max_cver_len else max_cver_len
lver_len = (
len(data["latest"]["version"]) if "latest" in data else len("Version")
)
max_lver_len = lver_len if lver_len > max_lver_len else max_lver_len
self.max_mod_len = max_mod_len
self.max_cver_len = max_cver_len
self.max_lver_len = max_lver_len
self.max_ver_len = max_lver_len if max_lver_len > max_cver_len else max_cver_len
def list(self):
"""Lists the mods installed on this server."""
# Find the longest mod name
print(
"{:<{width}}\tenabled\tinstalled\tcurrent_v\tlatest_v".format(
"mod_name", width=self.max_mod_len
)
)
for mod, data in self.mods.items():
print(
"{:<{width}}\t{enbld}\t{inst}\t\t{cver}\t\t{lver}".format(
mod,
enbld=str(data["enabled"]),
inst=str(data["installed"]),
cver=data["version"] if data["installed"] else "N/A",
lver=data["latest"]["version"] if "latest" in data else "N/A",
width=self.max_mod_len,
)
)
def override_credentials(self, username: str, token: str):
"""Replaces the values provided in server-settings.json or player-data.json"""
if username is not None:
self.username = username
if token is not None:
self.token = token
def _print_mod_message(
self, mod: str, version: str, action: str, result: str, message: str, data: hash
):
"""
Prints a mod status message using the provided parameters.
"""
if data is not None:
title = data["title"] if self.title_mode else mod
else:
title = mod
output_string = (
"{title:<{mwidth}}\t{version:<{vwidth}}"
"\t{action:<10}\t{result:<10}\t{message}"
).format(
title=title,
version=version,
action=action,
result=result,
message=message,
vwidth=self.max_ver_len,
mwidth=self.max_mod_len,
)
print(output_string)
def update(self):
"""
Updates all mods currently installed on this server to the latest
release
"""
self._print_mod_message("Mod", "Version", "Action", "Result", "Message", None)
for mod, data in self.mods.items():
version = data["version"] if data["installed"] else "N/A"
if "metadata" not in data:
self._print_mod_message(
mod=mod,
version=version,
action="Skip",
result="N/A",
message="Missing metadata, skipping update!",
data=data,
)
continue
if "latest" not in data:
message = (
"No release found for factorio '{version}', skipping update!"
).format(version=self.fact_version["release"])
self._print_mod_message(
mod=mod,
version=version,
action="Skip",
result="N/A",
message=message,
data=data,
)
continue
self._prune_old_releases(mod)
self._download_latest_release(mod)
# Update the mod list file
self._update_mod_list()
def _prune_old_releases(self, mod: str):
"""
Deletes any locally installed versions older than the latest release.
Keyword Arguments:
mod -- name of the target to update
"""
data = self.mods[mod]
latest_version = data["latest"]["version"]
# Declare the patterns
mod_pattern = re.compile(
"^{mod}_({ver})[.]zip$".format(mod=mod, ver=self.MOD_VERSION_PATTERN)
)
version_pattern = re.compile(
"^{mod}_{ver}[.]zip$".format(mod=mod, ver=latest_version)
)
# Build the parse list
basenames = [os.path.basename(x) for x in self.mod_files]
inst_rels = [x for x in basenames if mod_pattern.fullmatch(x)]
for rel in inst_rels:
if version_pattern.fullmatch(rel):
continue
match = mod_pattern.fullmatch(rel)
if match:
rel_ver = match.group(1)
else:
rel_ver = "TBD"
rel_path = os.path.join(self.mod_path, rel)
try:
os.remove(rel_path)
result = "Success"
message = ""
except OSError as error:
message = ("error: failed to remove '{fname}': " "{errstr}").format(
fname=rel_path, errstr=error.strerror
)
result = "Failure"
self._print_mod_message(
mod=mod,
version=rel_ver,
action="Remove",
result=result,
message=message,
data=data,
)
def _download_latest_release(self, mod: str):
"""
Retrieves the latest version of the specified mod compatible with the
factorio release present on this server.
Keyword Arguments:
mod -- name of the target to update
"""
data = self.mods[mod]
latest = data["latest"]
target = os.path.join(self.mod_path, latest["file_name"])
validate = download = False
v_cur = data["version"] if "version" in data else "N/A"
v_new = latest["version"]
if data["installed"]:
if v_new == v_cur:
validate = True
else:
message = "Updating from '{v_cur}'".format(v_cur=v_cur)
download = True
else:
message = "Downloading initial release '{v_new}'".format(v_new=v_new)
download = True
if validate:
if _validate_hash(latest["sha1"], target):
result = "Success"
message = "Deprecated mod" if data["deprecated"] else ""
else:
result = "Failure"
download = True
message = "Validation failed, downloading again"
self._print_mod_message(
mod=mod,
version=v_cur,
action="Validate",
result=result,
message=message,
data=data,
)
if download:
creds = {"username": self.username, "token": self.token}
dl_url = self.mod_server_url + latest["download_url"]
with requests.get(dl_url, params=creds, stream=True) as req:
if req.status_code == 200:
with open(target, "wb") as target_file:
shutil.copyfileobj(req.raw, target_file)
target_file.flush()
if _validate_hash(latest["sha1"], target):
result = "Success"
else:
result = "Failure"
message = "Download did not match checksum!"
elif req.status_code == 403:
message = (
"Failed to download, credentials not accepted. "
+ "Check your username/token"
)
result = "Failure"
else:
message = "Unable to retrieve, status code: " + str(req.status_code)
result = "Failure"
self._print_mod_message(
mod=mod,
version=v_new,
action="Download",
result=result,
message=message,
data=data,
)
if __name__ == "__main__":
DESC_TEXT = "Updates mods for a target factorio installation"
PARSER = argparse.ArgumentParser(description=DESC_TEXT)
# Username
PARSER.add_argument(
"-u",
"--username",
dest="username",
help="factorio.com username overriding server-settings.json/player-data.json",
)
# Token
PARSER.add_argument(
"-t",
"--token",
dest="token",
help="factorio.com API token overriding server-settings.json/player-data.json",
)
# Title format
PARSER.add_argument(
"--print-titles",
dest="title_mode",
default=False,
action="store_true",
help="When true, print the mod title instead of the api name",
)
# Server Settings
PARSER.add_argument(
"-s",
"--server-settings",
dest="settings_path",
required=False,
help=(
"Absolute path to the server-settings.json file "
+ "(overrides player-data.json)"
),
)
# Player Data
PARSER.add_argument(
"-d",
"--player-data",
dest="data_path",
required=False,
help="Absolute path to the player-data.json file",
)
# Factorio mod directory
PARSER.add_argument(
"-m",
"--mod-directory",
dest="mod_path",
required=True,
help="Absolute path to the mod directory",
)
# Factorio binary absolute path
PARSER.add_argument(
"--fact-path",
dest="fact_path",
required=True,
help="Absolute path to the factorio binary",
)
# Possible Execution modes
MODE_GROUP = PARSER.add_mutually_exclusive_group(required=True)
MODE_GROUP.add_argument(
"--list",
dest="mode",
action="store_const",
const=ModUpdater.Mode.LIST,
help="List the currently installed mods with versions",
)
MODE_GROUP.add_argument(
"--update",
dest="mode",
action="store_const",
const=ModUpdater.Mode.UPDATE,
help="Update all mods to their latest release",
)
ARGS = PARSER.parse_args()
UPDATER = ModUpdater(
settings_path=ARGS.settings_path,
data_path=ARGS.data_path,
mod_path=ARGS.mod_path,
fact_path=ARGS.fact_path,
creds={"username": ARGS.username, "token": ARGS.token},
title_mode=ARGS.title_mode,
)
if ARGS.mode == ModUpdater.Mode.LIST:
UPDATER.list()
elif ARGS.mode == ModUpdater.Mode.UPDATE:
UPDATER.update()