update.py

#!/usr/bin/python3

#
# Technic server update script by rewbycraft
# License: MIT
#
# This script is rather hackish.
# It requires:
# - cp
# - rm
# - unzip
# - python3-urllib3
# - wget
#

import urllib3
import json
import os
import glob
import subprocess
import hashlib

#API url + modpack slug (no trailing /)
baseUrl = "http://solder.pagefortress.com/api/modpack/techcavern-experimental-pack"

#mods not to put on the server (mostly client-only plugins)
ignoredMods = ['nei', 'neiintegration', 'waila', 'wailaplugins', 'journeymap']

print("BEGINNING FULL UPGRADE")

def hashfile(afile, hasher, blocksize=65536):
    buf = afile.read(blocksize)
    while len(buf) > 0:
        hasher.update(buf)
        buf = afile.read(blocksize)
    return hasher.hexdigest()

def shl(args):
  print("+ " + ' '.join(args))
  subprocess.call(args)

def fileMatch(filename, expected):
  print("===> Checking file: " + filename)
  filehash = hashfile(open(filename, 'rb'), hashlib.md5())
  print("====> Expected: " + expected)
  print("====> Found:    " + filehash)
  return filehash == expected

print("=> Ignored mods:")
print("==> " + ', '.join(ignoredMods))

os.makedirs("./cache", 0o777, True)

print("=> Resetting mod and config directories...")
shl(['rm', '-r', 'mods', 'config'])
os.makedirs("./mods", 0o777, True)
os.makedirs("./config", 0o777, True)

print("=> Processing mods...")
response = json.loads(urllib3.PoolManager().request('GET', baseUrl).data.decode("utf-8"))
response = json.loads(urllib3.PoolManager().request('GET', baseUrl + '/' + response["recommended"]).data.decode("utf-8"))
for mod in response['mods']:
  if not mod['name'] in ignoredMods:
    print("==> Processing: " + mod['name'])
    filename = mod['url'].split('/')[-1]
    if not (os.path.isfile("cache/" + filename) and fileMatch("cache/"+filename, mod['md5'])):
      print("===> Downloading...")
      shl(['wget', '-O', "cache/"+filename, mod['url']])
    print("===> Unpacking...")
    shl(['unzip', '-o', "cache/"+filename])
  else:
    print("==> Ignoring mod: " + mod['name'])

print("=> Applying custom stuffs...")

shl(['cp', '-r'] + glob.glob('./custommods/*') + ['mods/'])
shl(['cp', '-r'] + glob.glob('./customconfig/*') + ['config/'])