870 lines
35 KiB
Python
Executable file
870 lines
35 KiB
Python
Executable file
#!/usr/bin/python
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# Copyright (C) 2012 Humbug, Inc.
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import sys
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import traceback
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import simplejson
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import re
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import time
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import subprocess
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import optparse
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import os
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import datetime
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import textwrap
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import signal
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import logging
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import hashlib
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import unicodedata
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DEFAULT_SITE = "https://humbughq.com"
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def to_humbug_username(zephyr_username):
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if "@" in zephyr_username:
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(user, realm) = zephyr_username.split("@")
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else:
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(user, realm) = (zephyr_username, "ATHENA.MIT.EDU")
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if realm.upper() == "ATHENA.MIT.EDU":
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return user.lower() + "@mit.edu"
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return user.lower() + "|" + realm.upper() + "@mit.edu"
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def to_zephyr_username(humbug_username):
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(user, realm) = humbug_username.split("@")
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if "|" not in user:
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return user.lower() + "@ATHENA.MIT.EDU"
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match_user = re.match(r'([a-zA-Z0-9_]+)\|(.+)', user)
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if not match_user:
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raise Exception("Could not parse Zephyr realm for cross-realm user %s" % (humbug_username,))
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return match_user.group(1).lower() + "@" + match_user.group(2).upper()
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# Checks whether the pair of adjacent lines would have been
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# linewrapped together, had they been intended to be parts of the same
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# paragraph. Our check is whether if you move the first word on the
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# 2nd line onto the first line, the resulting line is either (1)
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# significantly shorter than the following line (which, if they were
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# in the same paragraph, should have been wrapped in a way consistent
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# with how the previous line was wrapped) or (2) shorter than 60
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# characters (our assumed minimum linewrapping threshhold for Zephyr)
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# or (3) the first word of the next line is longer than this entire
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# line.
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def different_paragraph(line, next_line):
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words = next_line.split()
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return (len(line + " " + words[0]) < len(next_line) * 0.8 or
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len(line + " " + words[0]) < 50 or
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len(line) < len(words[0]))
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# Linewrapping algorithm based on:
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# http://gcbenison.wordpress.com/2011/07/03/a-program-to-intelligently-remove-carriage-returns-so-you-can-paste-text-without-having-it-look-awful/
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def unwrap_lines(body):
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lines = body.split("\n")
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result = ""
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previous_line = lines[0]
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for line in lines[1:]:
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line = line.rstrip()
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if (re.match(r'^\W', line, flags=re.UNICODE)
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and re.match(r'^\W', previous_line, flags=re.UNICODE)):
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result += previous_line + "\n"
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elif (line == "" or
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previous_line == "" or
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re.match(r'^\W', line, flags=re.UNICODE) or
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different_paragraph(previous_line, line)):
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# Use 2 newlines to separate sections so that we
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# trigger proper Markdown processing on things like
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# bulleted lists
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result += previous_line + "\n\n"
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else:
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result += previous_line + " "
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previous_line = line
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result += previous_line
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return result
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def send_humbug(zeph):
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message = {}
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if options.forward_class_messages:
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message["forged"] = "yes"
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message['type'] = zeph['type']
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message['time'] = zeph['time']
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message['sender'] = to_humbug_username(zeph['sender'])
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if "subject" in zeph:
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# Truncate the subject to the current limit in Humbug. No
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# need to do this for stream names, since we're only
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# subscribed to valid stream names.
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message["subject"] = zeph["subject"][:60]
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if zeph['type'] == 'stream':
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# Forward messages sent to -c foo -i bar to stream bar subject "instance"
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if zeph["stream"] == "message":
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message['to'] = zeph['subject'].lower()
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message['subject'] = "instance %s" % (zeph['subject'],)
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elif zeph["stream"] == "tabbott-test5":
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message['to'] = zeph['subject'].lower()
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message['subject'] = "test instance %s" % (zeph['subject'],)
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else:
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message["to"] = zeph["stream"]
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else:
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message["to"] = zeph["recipient"]
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message['content'] = unwrap_lines(zeph['content'])
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if options.test_mode and options.site == DEFAULT_SITE:
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logger.debug("Message is: %s" % (str(message),))
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return {'result': "success"}
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return humbug_client.send_message(message)
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def send_error_humbug(error_msg):
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message = {"type": "private",
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"sender": humbug_account_email,
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"to": humbug_account_email,
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"content": error_msg,
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}
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humbug_client.send_message(message)
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current_zephyr_subs = set()
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def zephyr_bulk_subscribe(subs):
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try:
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zephyr._z.subAll(subs)
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except IOError:
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# Since we haven't added the subscription to
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# current_zephyr_subs yet, we can just return (so that we'll
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# continue processing normal messages) and we'll end up
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# retrying the next time the bot checks its subscriptions are
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# up to date.
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logger.exception("Error subscribing to streams (will retry automatically):")
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logging.warning("Streams were: %s" % ((cls for cls, instance, recipient in subs),))
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return
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try:
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actual_zephyr_subs = [cls for (cls, _, _) in zephyr._z.getSubscriptions()]
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except IOError:
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logging.exception("Error getting current Zephyr subscriptions")
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# Don't add anything to current_zephyr_subs so that we'll
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# retry the next time we check for streams to subscribe to
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# (within 15 seconds).
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return
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for (cls, instance, recipient) in subs:
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if cls not in actual_zephyr_subs:
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logging.error("Zephyr failed to subscribe us to %s; will retry" % (cls,))
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try:
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# We'll retry automatically when we next check for
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# streams to subscribe to (within 15 seconds), but
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# it's worth doing 1 retry immediately to avoid
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# missing 15 seconds of messages on the affected
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# classes
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zephyr._z.sub(cls, instance, recipient)
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except IOError:
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pass
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else:
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current_zephyr_subs.add(cls)
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def update_subscriptions_from_humbug():
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try:
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res = humbug_client.get_public_streams()
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if res.get("result") == "success":
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streams = res["streams"]
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else:
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logger.error("Error getting public streams:\n%s" % res)
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return
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except Exception:
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logger.exception("Error getting public streams:")
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return
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classes_to_subscribe = set()
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for stream in streams:
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# Zephyr class names are canonicalized by first applying NFKC
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# normalization and then lower-casing server-side
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canonical_cls = unicodedata.normalize("NFKC", stream).lower().encode("utf-8")
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if canonical_cls in current_zephyr_subs:
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continue
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if canonical_cls in ['security', 'login', 'network', 'ops', 'user_locate']:
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# These zephyr classes cannot be subscribed to by us, due
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# to MIT's Zephyr access control settings
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continue
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if (options.shard is not None and
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not hashlib.sha1(canonical_cls).hexdigest().startswith(options.shard)):
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# This stream is being handled by a different zephyr_mirror job.
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continue
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classes_to_subscribe.add((canonical_cls, "*", "*"))
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if len(classes_to_subscribe) > 0:
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zephyr_bulk_subscribe(list(classes_to_subscribe))
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def maybe_restart_mirroring_script():
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if os.stat(os.path.join(options.root_path, "stamps", "restart_stamp")).st_mtime > start_time or \
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((options.user == "tabbott" or options.user == "tabbott/extra") and
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os.stat(os.path.join(options.root_path, "stamps", "tabbott_stamp")).st_mtime > start_time):
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logger.warning("")
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logger.warning("zephyr mirroring script has been updated; restarting...")
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try:
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if child_pid is not None:
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os.kill(child_pid, signal.SIGTERM)
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except OSError:
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# We don't care if the child process no longer exists, so just print the error
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logging.exception("")
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while True:
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try:
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os.execvp(os.path.join(options.root_path, "user_root", "zephyr_mirror_backend.py"), sys.argv)
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except Exception:
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logger.exception("Error restarting mirroring script; trying again... Traceback:")
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time.sleep(1)
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def process_loop(log):
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sleep_count = 0
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sleep_time = 0.1
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while True:
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try:
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notice = zephyr.receive(block=False)
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except Exception:
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logger.exception("Error checking for new zephyrs:")
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time.sleep(1)
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continue
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if notice is not None:
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try:
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process_notice(notice, log)
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except Exception:
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logger.exception("Error relaying zephyr:")
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time.sleep(2)
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try:
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maybe_restart_mirroring_script()
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except Exception:
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logging.exception("Error checking whether restart is required:")
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time.sleep(sleep_time)
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sleep_count += sleep_time
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if sleep_count > 15:
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sleep_count = 0
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if options.forward_class_messages:
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# Ask the Humbug server about any new classes to subscribe to
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try:
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update_subscriptions_from_humbug()
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except Exception:
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logging.exception("Error updating subscriptions from Humbug:")
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def parse_zephyr_body(zephyr_data):
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try:
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(zsig, body) = zephyr_data.split("\x00", 1)
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except ValueError:
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(zsig, body) = ("", zephyr_data)
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return (zsig, body)
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def process_notice(notice, log):
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(zsig, body) = parse_zephyr_body(notice.message)
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is_personal = False
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is_huddle = False
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if notice.opcode == "PING":
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# skip PING messages
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return
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zephyr_class = notice.cls.lower()
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if notice.recipient != "":
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is_personal = True
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# Drop messages not to the listed subscriptions
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if is_personal and not options.forward_personals:
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return
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if (zephyr_class not in current_zephyr_subs) and not is_personal:
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logger.debug("Skipping ... %s/%s/%s" %
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(zephyr_class, notice.instance, is_personal))
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return
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if notice.format.endswith("@(@color(blue))"):
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logger.debug("Skipping message we got from Humbug!")
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return
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if is_personal:
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if body.startswith("CC:"):
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is_huddle = True
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# Map "CC: sipbtest espuser" => "starnine@mit.edu,espuser@mit.edu"
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huddle_recipients = [to_humbug_username(x.strip()) for x in
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body.split("\n")[0][4:].split()]
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if notice.sender not in huddle_recipients:
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huddle_recipients.append(to_humbug_username(notice.sender))
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body = body.split("\n", 1)[1]
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zeph = { 'time' : str(notice.time),
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'sender' : notice.sender,
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'zsig' : zsig, # logged here but not used by app
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'content' : body }
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if is_huddle:
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zeph['type'] = 'private'
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zeph['recipient'] = huddle_recipients
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elif is_personal:
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zeph['type'] = 'private'
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zeph['recipient'] = to_humbug_username(notice.recipient)
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else:
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zeph['type'] = 'stream'
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zeph['stream'] = zephyr_class
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if notice.instance.strip() != "":
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zeph['subject'] = notice.instance
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else:
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zeph["subject"] = '(instance "%s")' % (notice.instance,)
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# Add instances in for instanced personals
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if is_personal:
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if notice.cls.lower() != "message" and notice.instance.lower != "personal":
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heading = "[-c %s -i %s]\n" % (notice.cls, notice.instance)
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elif notice.cls.lower() != "message":
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heading = "[-c %s]\n" % (notice.cls,)
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elif notice.instance.lower() != "personal":
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heading = "[-i %s]\n" % (notice.instance,)
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else:
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heading = ""
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zeph["content"] = heading + zeph["content"]
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zeph = decode_unicode_byte_strings(zeph)
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logger.info("Received a message on %s/%s from %s..." %
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(zephyr_class, notice.instance, notice.sender))
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if log is not None:
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log.write(simplejson.dumps(zeph) + '\n')
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log.flush()
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if os.fork() == 0:
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# Actually send the message in a child process, to avoid blocking.
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try:
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res = send_humbug(zeph)
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if res.get("result") != "success":
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logger.error("Error relaying zephyr:\n%s\n%s" % (zeph, res))
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except Exception:
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logging.exception("Error relaying zephyr:")
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finally:
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os._exit(0)
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def decode_unicode_byte_strings(zeph):
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for field in zeph.keys():
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if isinstance(zeph[field], str):
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try:
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decoded = zeph[field].decode("utf-8")
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except Exception:
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decoded = zeph[field].decode("iso-8859-1")
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zeph[field] = decoded
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return zeph
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def zephyr_subscribe_autoretry(sub):
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while True:
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try:
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zephyr.Subscriptions().add(sub)
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return
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except IOError:
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# Probably a SERVNAK from the zephyr server, but print the
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# traceback just in case it's something else
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logger.exception("Error subscribing to personals (retrying). Traceback:")
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time.sleep(1)
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def zephyr_to_humbug(options):
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if options.forward_class_messages:
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update_subscriptions_from_humbug()
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if options.forward_personals:
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# Subscribe to personals; we really can't operate without
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# those subscriptions, so just retry until it works.
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zephyr_subscribe_autoretry(("message", "*", "%me%"))
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if subscribed_to_mail_messages():
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zephyr_subscribe_autoretry(("mail", "inbox", "%me%"))
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if options.resend_log_path is not None:
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with open(options.resend_log_path, 'r') as log:
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for ln in log:
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try:
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zeph = simplejson.loads(ln)
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# New messages added to the log shouldn't have any
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# elements of type str (they should already all be
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# unicode), but older messages in the log are
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# still of type str, so convert them before we
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# send the message
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zeph = decode_unicode_byte_strings(zeph)
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# Handle importing older zephyrs in the logs
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# where it isn't called a "stream" yet
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if "class" in zeph:
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zeph["stream"] = zeph["class"]
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if "instance" in zeph:
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zeph["subject"] = zeph["instance"]
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logger.info("sending saved message to %s from %s..." %
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(zeph.get('stream', zeph.get('recipient')),
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zeph['sender']))
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send_humbug(zeph)
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except Exception:
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logger.exception("Could not send saved zephyr:")
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time.sleep(2)
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logger.info("Starting receive loop.")
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if options.log_path is not None:
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with open(options.log_path, 'a') as log:
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process_loop(log)
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else:
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process_loop(None)
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def send_zephyr(zwrite_args, content):
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p = subprocess.Popen(zwrite_args, stdin=subprocess.PIPE,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = p.communicate(input=content.encode("utf-8"))
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if p.returncode:
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print "zwrite command '%s' failed with return code %d:" % (
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" ".join(zwrite_args), p.returncode,)
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if stdout:
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print stdout
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elif stderr:
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print "zwrite command '%s' printed the following warning:" % (
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" ".join(zwrite_args),)
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if stderr:
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print stderr
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return (p.returncode, stderr)
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def send_authed_zephyr(zwrite_args, content):
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return send_zephyr(zwrite_args, content)
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def send_unauthed_zephyr(zwrite_args, content):
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return send_zephyr(zwrite_args + ["-d"], content)
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def forward_to_zephyr(message):
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wrapper = textwrap.TextWrapper(break_long_words=False)
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wrapped_content = "\n".join("\n".join(wrapper.wrap(line))
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for line in message["content"].split("\n"))
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zwrite_args = ["zwrite", "-n", "-s", zsig_fullname, "-F", "Class $class, Instance $instance:\n" +
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"To: @bold($recipient) at $time $date\n" +
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"From: @bold{$1 <$sender>}\n\n$2@(@color(blue))"]
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logger.info("Forwarding message from %s" % (message["sender_email"],))
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if message['type'] == "stream":
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zephyr_class = message["display_recipient"]
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instance = message["subject"]
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match_whitespace_instance = re.match(r'^\(instance "(\s*)"\)$', instance)
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if match_whitespace_instance:
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# Forward messages sent to '(instance "WHITESPACE")' back to the
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# appropriate WHITESPACE instance for bidirectional mirroring
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instance = match_whitespace_instance.group(1)
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elif (instance == "instance %s" % (zephyr_class,) or
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instance == "test instance %s" % (zephyr_class,)):
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# Forward messages to e.g. -c -i white-magic back from the
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# place we forward them to
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if instance.startswith("test"):
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instance = zephyr_class
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zephyr_class = "tabbott-test5"
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else:
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instance = zephyr_class
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zephyr_class = "message"
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zwrite_args.extend(["-c", zephyr_class, "-i", instance])
|
|
elif message['type'] == "private":
|
|
if len(message['display_recipient']) <= 2:
|
|
recipient = to_zephyr_username(message["display_recipient"][0]["email"])
|
|
zwrite_args.extend([recipient])
|
|
else:
|
|
zwrite_args.extend(["-C"])
|
|
zwrite_args.extend([to_zephyr_username(user["email"]).replace("@ATHENA.MIT.EDU", "")
|
|
for user in message["display_recipient"]])
|
|
|
|
if options.test_mode:
|
|
logger.debug("Would have forwarded: %s\n%s" %
|
|
(zwrite_args, wrapped_content.encode("utf-8")))
|
|
return
|
|
|
|
heading = "Hi there! This is an automated message from Humbug."
|
|
support_closing = """If you have any questions, please be in touch through the \
|
|
Feedback tab or at support@humbughq.com."""
|
|
|
|
(code, stderr) = send_authed_zephyr(zwrite_args, wrapped_content)
|
|
if code == 0 and stderr == "":
|
|
return
|
|
elif code == 0:
|
|
return send_error_humbug("""%s
|
|
|
|
Your last message was successfully mirrored to zephyr, but zwrite \
|
|
returned the following warning:
|
|
|
|
%s
|
|
|
|
%s""" % (heading, stderr, support_closing))
|
|
elif code != 0 and (stderr.startswith("zwrite: Ticket expired while sending notice to ") or
|
|
stderr.startswith("zwrite: No credentials cache found while sending notice to ")):
|
|
# Retry sending the message unauthenticated; if that works,
|
|
# just notify the user that they need to renew their tickets
|
|
(code, stderr) = send_unauthed_zephyr(zwrite_args, wrapped_content)
|
|
if code == 0:
|
|
return send_error_humbug("""%s
|
|
|
|
Your last message was forwarded from Humbug to Zephyr unauthenticated, \
|
|
because your Kerberos tickets have expired. It was sent successfully, \
|
|
but please renew your Kerberos tickets in the screen session where you \
|
|
are running the Humbug-Zephyr mirroring bot, so we can send \
|
|
authenticated Zephyr messages for you again.
|
|
|
|
%s""" % (heading, support_closing))
|
|
|
|
# zwrite failed and it wasn't because of expired tickets: This is
|
|
# probably because the recipient isn't subscribed to personals,
|
|
# but regardless, we should just notify the user.
|
|
return send_error_humbug("""%s
|
|
|
|
Your Humbug-Zephyr mirror bot was unable to forward that last message \
|
|
from Humbug to Zephyr. That means that while Humbug users (like you) \
|
|
received it, Zephyr users did not. The error message from zwrite was:
|
|
|
|
%s
|
|
|
|
%s""" % (heading, stderr, support_closing))
|
|
|
|
def maybe_forward_to_zephyr(message):
|
|
if (message["sender_email"] == humbug_account_email):
|
|
if not ((message["type"] == "stream") or
|
|
(message["type"] == "private" and
|
|
False not in [u["email"].lower().endswith("mit.edu") for u in
|
|
message["display_recipient"]])):
|
|
# Don't try forward private messages with non-MIT users
|
|
# to MIT Zephyr.
|
|
return
|
|
timestamp_now = datetime.datetime.now().strftime("%s")
|
|
if float(message["timestamp"]) < float(timestamp_now) - 15:
|
|
logger.warning("Skipping out of order message: %s < %s" %
|
|
(message["timestamp"], timestamp_now))
|
|
return
|
|
try:
|
|
forward_to_zephyr(message)
|
|
except Exception:
|
|
# Don't let an exception forwarding one message crash the
|
|
# whole process
|
|
logger.exception("Error forwarding message:")
|
|
|
|
def humbug_to_zephyr(options):
|
|
# Sync messages from zephyr to humbug
|
|
logger.info("Starting syncing messages.")
|
|
while True:
|
|
try:
|
|
humbug_client.call_on_each_message(maybe_forward_to_zephyr)
|
|
except Exception:
|
|
logger.exception("Error syncing messages:")
|
|
time.sleep(1)
|
|
|
|
def subscribed_to_mail_messages():
|
|
# In case we have lost our AFS tokens and those won't be able to
|
|
# parse the Zephyr subs file, first try reading in result of this
|
|
# query from the environment so we can avoid the filesystem read.
|
|
stored_result = os.environ.get("HUMBUG_FORWARD_MAIL_ZEPHYRS")
|
|
if stored_result is not None:
|
|
return stored_result == "True"
|
|
for (cls, instance, recipient) in parse_zephyr_subs(verbose=False):
|
|
if (cls.lower() == "mail" and instance.lower() == "inbox"):
|
|
os.environ["HUMBUG_FORWARD_MAIL_ZEPHYRS"] = "True"
|
|
return True
|
|
os.environ["HUMBUG_FORWARD_MAIL_ZEPHYRS"] = "False"
|
|
return False
|
|
|
|
def add_humbug_subscriptions(verbose):
|
|
zephyr_subscriptions = set()
|
|
skipped = set()
|
|
for (cls, instance, recipient) in parse_zephyr_subs(verbose=verbose):
|
|
if cls.lower() == "message":
|
|
if recipient != "*":
|
|
# We already have a (message, *, you) subscription, so
|
|
# these are redundant
|
|
continue
|
|
# We don't support subscribing to (message, *)
|
|
if instance == "*":
|
|
if recipient == "*":
|
|
skipped.add((cls, instance, recipient, "subscribing to all of class message is not supported."))
|
|
continue
|
|
# If you're on -i white-magic on zephyr, get on stream white-magic on humbug
|
|
# instead of subscribing to stream "message" on humbug
|
|
zephyr_subscriptions.add(instance)
|
|
continue
|
|
elif cls.lower() == "mail" and instance.lower() == "inbox":
|
|
# We forward mail zephyrs, so no need to print a warning.
|
|
continue
|
|
elif len(cls) > 30:
|
|
skipped.add((cls, instance, recipient, "Class longer than 30 characters"))
|
|
continue
|
|
elif instance != "*":
|
|
skipped.add((cls, instance, recipient, "Unsupported non-* instance"))
|
|
continue
|
|
elif recipient != "*":
|
|
skipped.add((cls, instance, recipient, "Unsupported non-* recipient."))
|
|
continue
|
|
zephyr_subscriptions.add(cls)
|
|
|
|
if len(zephyr_subscriptions) != 0:
|
|
res = humbug_client.add_subscriptions(list(zephyr_subscriptions))
|
|
if res.get("result") != "success":
|
|
print "Error subscribing to streams:"
|
|
print res["msg"]
|
|
return
|
|
|
|
already = res.get("already_subscribed")
|
|
new = res.get("subscribed")
|
|
if verbose:
|
|
if already is not None and len(already) > 0:
|
|
print
|
|
print "Already subscribed to:", ", ".join(already)
|
|
if new is not None and len(new) > 0:
|
|
print
|
|
print "Successfully subscribed to:", ", ".join(new)
|
|
|
|
if len(skipped) > 0:
|
|
if verbose:
|
|
print
|
|
print "\n".join(textwrap.wrap("""\
|
|
You have some lines in ~/.zephyr.subs that could not be
|
|
synced to your Humbug subscriptions because they do not
|
|
use "*" as both the instance and recipient and not one of
|
|
the special cases (e.g. personals and mail zephyrs) that
|
|
Humbug has a mechanism for forwarding. Humbug does not
|
|
allow subscribing to only some subjects on a Humbug
|
|
stream, so this tool has not created a corresponding
|
|
Humbug subscription to these lines in ~/.zephyr.subs:
|
|
"""))
|
|
print
|
|
|
|
for (cls, instance, recipient, reason) in skipped:
|
|
if verbose:
|
|
if reason != "":
|
|
print " [%s,%s,%s] (%s)" % (cls, instance, recipient, reason)
|
|
else:
|
|
print " [%s,%s,%s]" % (cls, instance, recipient, reason)
|
|
if len(skipped) > 0:
|
|
if verbose:
|
|
print
|
|
print "\n".join(textwrap.wrap("""\
|
|
If you wish to be subscribed to any Humbug streams related
|
|
to these .zephyrs.subs lines, please do so via the Humbug
|
|
web interface.
|
|
"""))
|
|
print
|
|
if verbose:
|
|
print
|
|
print "IMPORTANT: Please reload the Humbug app for these changes to take effect."
|
|
|
|
def valid_stream_name(name):
|
|
return name != ""
|
|
|
|
def parse_zephyr_subs(verbose=False):
|
|
zephyr_subscriptions = set()
|
|
subs_file = os.path.join(os.environ["HOME"], ".zephyr.subs")
|
|
if not os.path.exists(subs_file):
|
|
if verbose:
|
|
print >>sys.stderr, "Couldn't find ~/.zephyr.subs!"
|
|
return []
|
|
|
|
for line in file(subs_file, "r").readlines():
|
|
line = line.strip()
|
|
if len(line) == 0:
|
|
continue
|
|
try:
|
|
(cls, instance, recipient) = line.split(",")
|
|
cls = cls.replace("%me%", options.user)
|
|
instance = instance.replace("%me%", options.user)
|
|
recipient = recipient.replace("%me%", options.user)
|
|
if not valid_stream_name(cls):
|
|
if verbose:
|
|
print >>sys.stderr, "Skipping subscription to unsupported class name: [%s]" % (line,)
|
|
continue
|
|
except Exception:
|
|
if verbose:
|
|
print >>sys.stderr, "Couldn't parse ~/.zephyr.subs line: [%s]" % (line,)
|
|
continue
|
|
zephyr_subscriptions.add((cls.strip(), instance.strip(), recipient.strip()))
|
|
return zephyr_subscriptions
|
|
|
|
def fetch_fullname(username):
|
|
try:
|
|
proc = subprocess.Popen(['hesinfo', username, 'passwd'],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
out, _err_unused = proc.communicate()
|
|
if proc.returncode == 0:
|
|
return out.split(':')[4].split(',')[0]
|
|
except Exception:
|
|
logger.exception("Error getting fullname for %s:" % (username,))
|
|
|
|
return username
|
|
|
|
def configure_logger(direction_name):
|
|
if options.forward_class_messages:
|
|
if options.test_mode:
|
|
log_file = "/home/humbug/test-mirror-log"
|
|
else:
|
|
log_file = "/home/humbug/mirror-log"
|
|
else:
|
|
log_file = "/tmp/humbug-log." + options.user
|
|
logger = logging.getLogger(__name__)
|
|
log_format = "%(asctime)s " + direction_name + ": %(message)s"
|
|
formatter = logging.Formatter(log_format)
|
|
logging.basicConfig(format=log_format)
|
|
logger.setLevel(logging.DEBUG)
|
|
file_handler = logging.FileHandler(log_file)
|
|
file_handler.setFormatter(formatter)
|
|
logger.addHandler(file_handler)
|
|
return logger
|
|
|
|
def parse_args():
|
|
parser = optparse.OptionParser()
|
|
parser.add_option('--forward-class-messages',
|
|
default=False,
|
|
help=optparse.SUPPRESS_HELP,
|
|
action='store_true')
|
|
parser.add_option('--shard',
|
|
help=optparse.SUPPRESS_HELP)
|
|
parser.add_option('--noshard',
|
|
default=False,
|
|
help=optparse.SUPPRESS_HELP,
|
|
action='store_true')
|
|
parser.add_option('--resend-log',
|
|
dest='resend_log_path',
|
|
help=optparse.SUPPRESS_HELP)
|
|
parser.add_option('--enable-log',
|
|
dest='log_path',
|
|
help=optparse.SUPPRESS_HELP)
|
|
parser.add_option('--no-forward-personals',
|
|
dest='forward_personals',
|
|
help=optparse.SUPPRESS_HELP,
|
|
default=True,
|
|
action='store_false')
|
|
parser.add_option('--no-forward-from-humbug',
|
|
default=True,
|
|
dest='forward_from_humbug',
|
|
help=optparse.SUPPRESS_HELP,
|
|
action='store_false')
|
|
parser.add_option('--verbose',
|
|
default=False,
|
|
help=optparse.SUPPRESS_HELP,
|
|
action='store_true')
|
|
parser.add_option('--sync-subscriptions',
|
|
default=False,
|
|
action='store_true')
|
|
parser.add_option('--site',
|
|
default=DEFAULT_SITE,
|
|
help=optparse.SUPPRESS_HELP)
|
|
parser.add_option('--user',
|
|
default=os.environ["USER"],
|
|
help=optparse.SUPPRESS_HELP)
|
|
parser.add_option('--root-path',
|
|
default="/afs/athena.mit.edu/user/t/a/tabbott/for_friends",
|
|
help=optparse.SUPPRESS_HELP)
|
|
parser.add_option('--test-mode',
|
|
default=False,
|
|
help=optparse.SUPPRESS_HELP,
|
|
action='store_true')
|
|
parser.add_option('--api-key-file',
|
|
default=os.path.join(os.environ["HOME"], "Private", ".humbug-api-key"))
|
|
return parser.parse_args()
|
|
|
|
if __name__ == "__main__":
|
|
# Set the SIGCHLD handler back to SIG_DFL to prevent these errors
|
|
# when importing the "requests" module after being restarted using
|
|
# the restart_stamp functionality:
|
|
#
|
|
# close failed in file object destructor:
|
|
# IOError: [Errno 10] No child processes
|
|
signal.signal(signal.SIGCHLD, signal.SIG_DFL)
|
|
|
|
(options, args) = parse_args()
|
|
|
|
# The 'api' directory needs to go first, so that 'import humbug' won't pick
|
|
# up some other directory named 'humbug'.
|
|
sys.path[:0] = [os.path.join(options.root_path, 'api'),
|
|
options.root_path,
|
|
os.path.join(options.root_path, "python-zephyr"),
|
|
os.path.join(options.root_path, "python-zephyr/build/lib.linux-x86_64-2.6/")]
|
|
|
|
# In case this is an automated restart of the mirroring script,
|
|
# and we have lost AFS tokens, first try reading the API key from
|
|
# the environment so that we can skip doing a filesystem read.
|
|
if os.environ.get("HUMBUG_API_KEY") is not None:
|
|
api_key = os.environ.get("HUMBUG_API_KEY")
|
|
else:
|
|
if not os.path.exists(options.api_key_file):
|
|
print "\n".join(textwrap.wrap("""\
|
|
Could not find API key file.
|
|
You need to either place your api key file at %s,
|
|
or specify the --api-key-file option.""" % (options.api_key_file,)))
|
|
sys.exit(1)
|
|
api_key = file(options.api_key_file).read().strip()
|
|
# Store the API key in the environment so that our children
|
|
# don't need to read it in
|
|
os.environ["HUMBUG_API_KEY"] = api_key
|
|
|
|
humbug_account_email = options.user + "@mit.edu"
|
|
import humbug
|
|
humbug_client = humbug.Client(
|
|
email=humbug_account_email,
|
|
api_key=api_key,
|
|
verbose=True,
|
|
client="zephyr_mirror",
|
|
site=options.site)
|
|
|
|
start_time = time.time()
|
|
|
|
if options.sync_subscriptions:
|
|
print "Syncing your ~/.zephyr.subs to your Humbug Subscriptions!"
|
|
add_humbug_subscriptions(True)
|
|
sys.exit(0)
|
|
|
|
# First check that there are no other bots running
|
|
bot_name = "zephyr_mirror_backend.py"
|
|
if not options.test_mode:
|
|
pgrep_query = bot_name
|
|
if options.shard is not None:
|
|
pgrep_query = "%s.*--shard=%s" % (bot_name, options.shard)
|
|
proc = subprocess.Popen(['pgrep', '-U', os.environ["USER"], "-f", pgrep_query],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
out, _err_unused = proc.communicate()
|
|
for pid in out.split():
|
|
if int(pid.strip()) != os.getpid():
|
|
# Another copy of zephyr_mirror.py! Kill it.
|
|
print "Killing duplicate zephyr_mirror process %s" % (pid,)
|
|
try:
|
|
os.kill(int(pid), signal.SIGKILL)
|
|
except OSError:
|
|
# We don't care if the child process no longer exists, so just print the error
|
|
traceback.print_exc()
|
|
|
|
if options.shard is not None and set(options.shard) != set("a"):
|
|
# The shard that is all "a"s is the one that handles personals
|
|
# forwarding and humbug => zephyr forwarding
|
|
options.forward_personals = False
|
|
options.forward_from_humbug = False
|
|
|
|
if options.forward_from_humbug:
|
|
child_pid = os.fork()
|
|
if child_pid == 0:
|
|
# Run the humbug => zephyr mirror in the child
|
|
logger = configure_logger("humbug=>zephyr")
|
|
zsig_fullname = fetch_fullname(options.user)
|
|
humbug_to_zephyr(options)
|
|
sys.exit(0)
|
|
else:
|
|
child_pid = None
|
|
|
|
import zephyr
|
|
while True:
|
|
try:
|
|
# zephyr.init() tries to clear old subscriptions, and thus
|
|
# sometimes gets a SERVNAK from the server
|
|
zephyr.init()
|
|
break
|
|
except IOError:
|
|
traceback.print_exc()
|
|
time.sleep(1)
|
|
logger_name = "zephyr=>humbug"
|
|
if options.shard is not None:
|
|
logger_name += "(%s)" % (options.shard,)
|
|
logger = configure_logger(logger_name)
|
|
# Have the kernel reap children for when we fork off processes to send Humbugs
|
|
signal.signal(signal.SIGCHLD, signal.SIG_IGN)
|
|
zephyr_to_humbug(options)
|