forked from github/server
374 lines
12 KiB
Python
Executable file
374 lines
12 KiB
Python
Executable file
#!/usr/bin/env python
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# -*- coding: iso-8859-1 -*-
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from email.Utils import parseaddr
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from email.Parser import Parser
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import os
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import os.path
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import ConfigParser
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from re import compile, IGNORECASE
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from stat import ST_MTIME
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from string import upper, split, replace
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import logging
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import sys
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from sys import stdin
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from time import ctime, sleep, time
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from socket import gethostname
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from rfc822 import parsedate_tz, mktime_tz
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if 'ERESSEA' in os.environ:
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dir = os.environ['ERESSEA']
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elif 'HOME' in os.environ:
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dir = os.path.join(os.environ['HOME'], '/eressea')
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else: # WTF? No HOME?
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dir = "/home/eressea/eressea"
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if not os.path.isdir(dir):
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print "please set the ERESSEA environment variable to the install path"
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sys.exit(1)
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rootdir = dir
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game = int(sys.argv[1])
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gamedir = os.path.join(rootdir, "game-%d" % (game, ))
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frommail = 'eressea-server@kn-bremen.de'
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gamename = 'Eressea'
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sender = '%s Server <%s>' % (gamename, frommail)
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inifile = os.path.join(gamedir, 'eressea.ini')
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if not os.path.exists(inifile):
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print "no such file: " . inifile
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else:
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config = ConfigParser.ConfigParser()
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config.read(inifile)
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if config.has_option('game', 'email'):
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frommail = config.get('game', 'email')
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if config.has_option('game', 'name'):
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gamename = config.get('game', 'name')
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if config.has_option('game', 'sender'):
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sender = config.get('game', 'sender')
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else:
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sender = "%s Server <%s>" % (gamename, frommail)
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config = None
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prefix = 'turn-'
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hostname = gethostname()
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orderbase = "orders.dir"
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sendmail = True
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# maximum number of reports per sender:
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maxfiles = 20
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# write headers to file?
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writeheaders = True
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# reject all html email?
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rejecthtml = True
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def unlock_file(filename):
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try:
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os.unlink(filename+".lock")
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except:
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print "could not unlock %s.lock, file not found" % filename
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def lock_file(filename):
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i = 0
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wait = 1
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if not os.path.exists(filename):
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file=open(filename, "w")
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file.close()
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while True:
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try:
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os.symlink(filename, filename+".lock")
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return
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except:
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i = i+1
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if i == 5: unlock_file(filename)
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sleep(wait)
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wait = wait*2
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messages = {
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"multipart-en" :
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"ERROR: The orders you sent contain no plaintext. " \
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"The Eressea server cannot process orders containing HTML " \
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"or invalid attachments, which are the reasons why this " \
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"usually happens. Please change the settings of your mail " \
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"software and re-send the orders.",
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"multipart-de" :
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"FEHLER: Die von dir eingeschickte Mail enth<74>lt keinen " \
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"Text. Evtl. hast Du den Zug als HTML oder als anderweitig " \
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"ung<EFBFBD>ltig formatierte Mail ingeschickt. Wir k<>nnen ihn " \
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"deshalb nicht ber<65>cksichtigen. Schicke den Zug nochmals " \
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"als reinen Text ohne Formatierungen ein.",
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"maildate-de":
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"Es erreichte uns bereits ein Zug mit einem sp<73>teren " \
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"Absendedatum (%s > %s). Entweder ist deine " \
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"Systemzeit verstellt, oder ein Zug hat einen anderen Zug von " \
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"dir auf dem Transportweg <20>berholt. Entscheidend f<>r die " \
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"Auswertungsreihenfolge ist das Absendedatum, d.h. der Date:-Header " \
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"deiner Mail.",
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"maildate-en":
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"The server already received an order file that was sent at a later " \
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"date (%s > %s). Either your system clock is wrong, or two messages have " \
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"overtaken each other on the way to the server. The order of " \
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"execution on the server is always according to the Date: header in " \
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"your mail.",
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"nodate-en":
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"Your message did not contain a valid Date: header in accordance with RFC2822.",
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"nodate-de":
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"Deine Nachricht enthielt keinen gueltigen Date: header nach RFC2822.",
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"error-de":
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"Fehler",
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"error-en":
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"Error",
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"warning-de":
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"Warnung",
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"warning-en":
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"Warning",
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"subject-de":
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"Befehle angekommen",
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"subject-en":
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"orders received"
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}
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# return 1 if addr is a valid email address
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def valid_email(addr):
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rfc822_specials = '/()<>@,;:\\"[]'
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# First we validate the name portion (name@domain)
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c = 0
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while c < len(addr):
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if addr[c] == '"' and (not c or addr[c - 1] == '.' or addr[c - 1] == '"'):
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c = c + 1
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while c < len(addr):
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if addr[c] == '"': break
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if addr[c] == '\\' and addr[c + 1] == ' ':
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c = c + 2
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continue
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if ord(addr[c]) < 32 or ord(addr[c]) >= 127: return 0
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c = c + 1
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else: return 0
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if addr[c] == '@': break
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if addr[c] != '.': return 0
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c = c + 1
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continue
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if addr[c] == '@': break
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if ord(addr[c]) <= 32 or ord(addr[c]) >= 127: return 0
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if addr[c] in rfc822_specials: return 0
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c = c + 1
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if not c or addr[c - 1] == '.': return 0
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# Next we validate the domain portion (name@domain)
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domain = c = c + 1
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if domain >= len(addr): return 0
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count = 0
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while c < len(addr):
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if addr[c] == '.':
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if c == domain or addr[c - 1] == '.': return 0
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count = count + 1
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if ord(addr[c]) <= 32 or ord(addr[c]) >= 127: return 0
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if addr[c] in rfc822_specials: return 0
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c = c + 1
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return count >= 1
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# return the replyto or from address in the header
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def get_sender(header):
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replyto = header.get("Reply-To")
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if replyto is None:
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replyto = header.get("From")
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if replyto is None: return None
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x = parseaddr(replyto)
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return x[1]
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# return first available filename basename,[0-9]+
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def available_file(dirname, basename):
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ver = 0
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maxdate = 0
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filename = "%s/%s,%s,%d" % (dirname, basename, hostname, ver)
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while os.path.exists(filename):
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maxdate = max(os.stat(filename)[ST_MTIME], maxdate)
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ver = ver + 1
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filename = "%s/%s,%s,%d" % (dirname, basename, hostname, ver)
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if ver >= maxfiles:
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return None, None
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return maxdate, filename
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def formatpar(string, l=76, indent=2):
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words = split(string)
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res = ""
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ll = 0
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first = 1
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for word in words:
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if first == 1:
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res = word
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first = 0
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ll = len(word)
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else:
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if ll + len(word) > l:
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res = res + "\n"+" "*indent+word
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ll = len(word) + indent
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else:
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res = res+" "+word
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ll = ll + len(word) + 1
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return res+"\n"
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def store_message(message, filename):
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outfile = open(filename, "w")
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outfile.write(message.as_string())
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outfile.close()
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return
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def write_part(outfile, part):
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charset = part.get_content_charset()
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payload = part.get_payload(decode=True)
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if charset is None:
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charset = "latin1"
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try:
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msg = payload.decode(charset, "ignore")
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except:
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msg = payload
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charset = None
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try:
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utf8 = msg.encode("utf-8", "ignore")
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outfile.write(utf8)
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except:
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outfile.write(msg)
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return False
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outfile.write("\n");
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return True
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def copy_orders(message, filename, sender):
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# print the header first
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if writeheaders:
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from os.path import split
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dirname, basename = split(filename)
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dirname = dirname + '/headers'
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if not os.path.exists(dirname): os.mkdir(dirname)
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outfile = open(dirname + '/' + basename, "w")
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for name, value in message.items():
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outfile.write(name + ": " + value + "\n")
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outfile.close()
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found = False
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outfile = open(filename, "w")
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if message.is_multipart():
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for part in message.get_payload():
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content_type = part.get_content_type()
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logger.debug("found content type %s for %s" % (content_type, sender))
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if content_type=="text/plain":
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if write_part(outfile, part):
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found = True
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else:
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charset = part.get_content_charset()
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logger.error("could not write text/plain part (charset=%s) for %s" % (charset, sender))
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else:
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if write_part(outfile, message):
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found = True
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else:
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charset = message.get_content_charset()
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logger.error("could not write text/plain message (charset=%s) for %s" % (charset, sender))
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outfile.close()
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return found
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# create a file, containing:
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# game=0 locale=de file=/path/to/filename email=rcpt@domain.to
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def accept(game, locale, stream, extend=None):
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global rootdir, orderbase, gamedir, gamename, sender
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if extend is not None:
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orderbase = orderbase + ".pre-" + extend
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savedir = os.path.join(gamedir, orderbase)
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# check if it's one of the pre-sent orders.
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# create the save-directories if they don't exist
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if not os.path.exists(gamedir): os.mkdir(gamedir)
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if not os.path.exists(savedir): os.mkdir(savedir)
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# parse message
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message = Parser().parse(stream)
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email = get_sender(message)
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logger = logging.getLogger(email)
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# write syslog
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if email is None or valid_email(email)==0:
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logger.warning("invalid email address: " + str(email))
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return -1
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logger.info("received orders from " + email)
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# get an available filename
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lock_file(gamedir + "/orders.queue")
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maxdate, filename = available_file(savedir, prefix + email)
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if filename is None:
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logger.warning("more than " + str(maxfiles) + " orders from " + email)
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return -1
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# copy the orders to the file
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text_ok = copy_orders(message, filename, email)
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unlock_file(gamedir + "/orders.queue")
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warning, msg, fail = None, "", False
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maildate = message.get("Date")
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if maildate != None:
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turndate = mktime_tz(parsedate_tz(maildate))
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os.utime(filename, (turndate, turndate))
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logger.debug("mail date is '%s' (%d)" % (maildate, turndate))
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if turndate < maxdate:
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logger.warning("inconsistent message date " + email)
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warning = " (" + messages["warning-" + locale] + ")"
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msg = msg + formatpar(messages["maildate-" + locale] % (ctime(maxdate),ctime(turndate)), 76, 2) + "\n"
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else:
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logger.warning("missing message date " + email)
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warning = " (" + messages["warning-" + locale] + ")"
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msg = msg + formatpar(messages["nodate-" + locale], 76, 2) + "\n"
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if not text_ok:
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warning = " (" + messages["error-" + locale] + ")"
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msg = msg + formatpar(messages["multipart-" + locale], 76, 2) + "\n"
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logger.warning("rejected - no text/plain in orders from " + email)
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os.unlink(filename)
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savedir = savedir + "/rejected"
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if not os.path.exists(savedir): os.mkdir(savedir)
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lock_file(gamedir + "/orders.queue")
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maxdate, filename = available_file(savedir, prefix + email)
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store_message(message, filename)
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unlock_file(gamedir + "/orders.queue")
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fail = True
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if sendmail and warning is not None:
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subject = gamename + " " + messages["subject-"+locale] + warning
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mail = "Subject: %s\nFrom: %s\nTo: %s\n\n" % (subject, sender, email) + msg
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from smtplib import SMTP
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server = SMTP("localhost")
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server.sendmail(sender, email, mail)
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server.close()
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if not sendmail:
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print text_ok, fail, email
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print filename
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if not fail:
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lock_file(gamedir + "/orders.queue")
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queue = open(gamedir + "/orders.queue", "a")
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queue.write("email=%s file=%s locale=%s game=%s\n" % (email, filename, locale, game))
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queue.close()
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unlock_file(gamedir + "/orders.queue")
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logger.info("done - accepted orders from " + email)
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return 0
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# the main body of the script:
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LOG_FILENAME=os.path.join(rootdir, 'log/orders.log')
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logging.basicConfig(level=logging.DEBUG, filename=LOG_FILENAME)
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logger = logging
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delay=None # TODO: parse the turn delay
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locale = sys.argv[2]
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infile = stdin
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if len(sys.argv)>3:
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infile = open(sys.argv[3], "r")
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retval = accept(game, locale, infile, delay)
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if infile!=stdin:
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infile.close()
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sys.exit(retval)
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