wizard/app/mediawiki.py

   1 import re
   2 import distutils.version
   3 import os
   4 import datetime
   5 import logging
   6 import shlex
   7 import shutil
   8
   9 from wizard import app, deploy, install, scripts, shell, util
  10 from wizard.app import php
  11
  12 def make_filename_regex(var):
  13     return 'LocalSettings.php', re.compile('^(\$' + app.expand_re(var) + r'''\s*=\s*)(.*)(;)''', re.M)
  14
  15 make_extractor = app.filename_regex_extractor(make_filename_regex)
  16 make_substitution = app.filename_regex_substitution(make_filename_regex)
  17 seed = {
  18         'WIZARD_IP': 'IP', # obsolete, remove after we're done
  19         'WIZARD_SITENAME': 'wgSitename',
  20         'WIZARD_SCRIPTPATH': 'wgScriptPath',
  21         'WIZARD_EMERGENCYCONTACT': ('wgEmergencyContact', 'wgPasswordSender'),
  22         'WIZARD_DBSERVER': 'wgDBserver',
  23         'WIZARD_DBNAME': 'wgDBname',
  24         'WIZARD_DBUSER': 'wgDBuser',
  25         'WIZARD_DBPASSWORD': 'wgDBpassword',
  26         'WIZARD_SECRETKEY': ('wgSecretKey', 'wgProxyKey'),
  27         }
  28
  29 class Application(deploy.Application):
  30     parametrized_files = ['LocalSettings.php', 'php.ini']
  31     deprecated_keys = set(['WIZARD_IP']) | php.deprecated_keys
  32     @property
  33     def extractors(self):
  34         if not self._extractors:
  35             self._extractors = util.dictmap(make_extractor, seed)
  36             self._extractors.update(php.extractors)
  37         return self._extractors
  38     @property
  39     def substitutions(self):
  40         if not self._substitutions:
  41             self._substitutions = util.dictkmap(make_substitution, seed)
  42             self._substitutions.update(php.substitutions)
  43         return self._substitutions
  44     @property
  45     def install_handler(self):
  46         handler = install.ArgHandler("mysql", "admin", "email")
  47         handler.add(install.Arg("title", help="Title of your new MediaWiki install"))
  48         return handler
  49     def checkConfig(self, deployment):
  50         return os.path.isfile(os.path.join(deployment.location, "LocalSettings.php"))
  51     def detectVersion(self, deployment):
  52         contents = deployment.read("includes/DefaultSettings.php")
  53         regex = make_filename_regex("wgVersion")[1]
  54         match = regex.search(contents)
  55         if not match: return None
  56         return distutils.version.LooseVersion(match.group(2)[1:-1])
  57     def install(self, version, options):
  58         try:
  59             os.unlink("LocalSettings.php")
  60         except OSError:
  61             pass
  62
  63         os.chmod("config", 0777) # XXX: vaguely sketchy
  64
  65         postdata = {
  66             'Sitename': options.title,
  67             'EmergencyContact': options.email,
  68             'LanguageCode': 'en',
  69             'DBserver': options.mysql_host,
  70             'DBname': options.mysql_db,
  71             'DBuser': options.mysql_user,
  72             'DBpassword': options.mysql_password,
  73             'DBpassword2': options.mysql_password,
  74             'defaultEmail': options.email,
  75             'SysopName': options.admin_name,
  76             'SysopPass': options.admin_password,
  77             'SysopPass2': options.admin_password,
  78             }
  79         result = install.fetch(options, 'config/index.php', post=postdata)
  80         if options.verbose: print result
  81         if result.find("Installation successful") == -1:
  82             raise install.Failure()
  83         os.rename('config/LocalSettings.php', 'LocalSettings.php')
  84     def upgrade(self, version, options):
  85         sh = shell.Shell()
  86         if not os.path.isfile("AdminSettings.php"):
  87             sh.call("git", "checkout", "mediawiki-" + str(version), "--", "AdminSettings.php")
  88         result = sh.eval("php", "maintenance/update.php", "--quick", log=True)
  89         if not result.rstrip().split()[-1] == "Done.":
  90             raise app.UpgradeFailure(result)
  91     def backup(self, deployment, options):
  92         sh = shell.Shell()
  93         # XXX: duplicate code, refactor, also, race condition
  94         backupdir = os.path.join(".scripts", "backups")
  95         outdir = os.path.join(backupdir, str(deployment.version) + "-" + datetime.date.today().isoformat())
  96         if not os.path.exists(backupdir):
  97             os.mkdir(backupdir)
  98         if os.path.exists(outdir):
  99             util.safe_unlink(outdir)
 100         os.mkdir(outdir)
 101         outfile = os.path.join(outdir, "db.sql")
 102         try:
 103             sh.call("mysqldump", "--compress", "-r", outfile, *get_mysql_args(deployment))
 104             sh.call("gzip", "--best", outfile)
 105         except shell.CallError as e:
 106             raise app.BackupFailure(e.stderr)
 107     def restore(self, deployment, backup, options):
 108         sh = shell.Shell()
 109         backup_dir = os.path.join(".scripts", "backups", backup)
 110         if not os.path.exists(backup_dir):
 111             raise app.RestoreFailure("Backup %s doesn't exist", backup)
 112         sql = open(os.path.join(backup_dir, "db.sql"), 'w+')
 113         sh.call("gunzip", "-c", os.path.join(backup_dir, "db.sql.gz"), stdout=sql)
 114         sql.seek(0)
 115         sh.call("mysql", *get_mysql_args(deployment), stdin=sql)
 116         sql.close()
 117
 118 def get_mysql_args(d):
 119     # XXX: add support for getting these out of options
 120     vars = d.extract()
 121     if 'WIZARD_DBNAME' not in vars:
 122         raise app.BackupFailure("Could not determine database name")
 123     triplet = scripts.get_sql_credentials()
 124     args = []
 125     if triplet is not None:
 126         server, user, password = triplet
 127         args += ["-h", server, "-u", user, "-p" + password]
 128     name = shlex.split(vars['WIZARD_DBNAME'])[0]
 129     args.append(name)
 130     return args