607 lines
23 KiB
Python
Executable file
607 lines
23 KiB
Python
Executable file
#!/usr/bin/python
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# Copyright (C) 2012 Humbug, Inc. All rights reserved.
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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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root_path = "/mit/tabbott/for_friends"
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sys.path[:0] = [root_path, root_path + "/python-zephyr",
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root_path + "/python-zephyr/build/lib.linux-x86_64-2.6/"]
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parser = optparse.OptionParser()
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parser.add_option('--forward-class-messages',
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dest='forward_class_messages',
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default=False,
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help=optparse.SUPPRESS_HELP,
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action='store_true')
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parser.add_option('--resend-log',
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dest='resend_log',
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default=False,
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help=optparse.SUPPRESS_HELP,
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action='store_true')
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parser.add_option('--enable-log',
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dest='enable_log',
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default=False,
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help=optparse.SUPPRESS_HELP,
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action='store_true')
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parser.add_option('--no-forward-personals',
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dest='forward_personals',
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help=optparse.SUPPRESS_HELP,
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default=True,
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action='store_false')
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parser.add_option('--forward-from-humbug',
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dest='forward_from_humbug',
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default=False,
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help=optparse.SUPPRESS_HELP,
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action='store_true')
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parser.add_option('--verbose',
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dest='verbose',
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default=False,
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help=optparse.SUPPRESS_HELP,
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action='store_true')
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parser.add_option('--sync-subscriptions',
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dest='sync_subscriptions',
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default=False,
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action='store_true')
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parser.add_option('--site',
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dest='site',
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default="https://humbughq.com",
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help=optparse.SUPPRESS_HELP,
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action='store')
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parser.add_option('--user',
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dest='user',
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default=os.environ["USER"],
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help=optparse.SUPPRESS_HELP,
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action='store')
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parser.add_option('--api-key-file',
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dest='api_key_file',
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default=os.path.join(os.environ["HOME"], "Private", ".humbug-api-key"),
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action='store')
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(options, args) = parser.parse_args()
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api_key = file(options.api_key_file).read().strip()
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import api.common
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humbug_client = api.common.HumbugAPI(email=options.user + "@mit.edu",
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api_key=api_key,
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verbose=True,
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client="zephyr_mirror",
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site=options.site)
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start_time = time.time()
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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_]+)\|(.+)@mit\.edu', 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]) < 60 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 (line == "" or
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previous_line == "" or
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not 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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message['fullname'] = username_to_fullname(zeph['sender'])
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message['shortname'] = zeph['sender'].split('@')[0]
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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['stream'] = 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['stream'] = zeph['subject'].lower()
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message['subject'] = "test instance %s" % (zeph['subject'])
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else:
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message["stream"] = zeph["stream"]
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else:
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message["recipient"] = zeph["recipient"]
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message['content'] = unwrap_lines(zeph['content'])
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return humbug_client.send_message(message)
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def fetch_fullname(username):
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try:
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match_user = re.match(r'([a-zA-Z0-9_]+)@mit\.edu', username)
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if match_user:
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proc = subprocess.Popen(['hesinfo', match_user.group(1), 'passwd'],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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out, _err_unused = proc.communicate()
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if proc.returncode == 0:
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return out.split(':')[4].split(',')[0]
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except:
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print >>sys.stderr, '%s: zephyr=>humbug: Error getting fullname for %s' % \
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(datetime.datetime.now(), username)
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traceback.print_exc()
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if "@" not in username:
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return username
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(user, realm) = username.split("@")
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if realm.upper() == "MIT.EDU":
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return user
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return user.lower() + "@" + realm.upper()
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fullnames = {}
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def username_to_fullname(username):
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if username not in fullnames:
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fullnames[username] = fetch_fullname(username)
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return fullnames[username]
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current_zephyr_subs = set()
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def ensure_subscribed(sub):
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if sub in current_zephyr_subs:
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return
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subs.add((sub, '*', '*'))
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current_zephyr_subs.add(sub)
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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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streams = res["streams"]
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except:
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print "%s: Error getting public streams:" % (datetime.datetime.now())
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traceback.print_exc()
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return
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for stream in streams:
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ensure_subscribed(stream)
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def maybe_restart_mirroring_script():
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if os.stat(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(root_path + "/stamps/tabbott_stamp").st_mtime > start_time):
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print
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print "%s: zephyr mirroring script has been updated; restarting..." % \
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(datetime.datetime.now())
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os.kill(child_pid, signal.SIGTERM)
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while True:
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try:
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if bot_name == "extra_mirror.py":
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os.execvp(root_path + "/extra_mirror.py", sys.argv)
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os.execvp(root_path + "/user_root/zephyr_mirror.py", sys.argv)
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except:
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print "Error restarting, trying again."
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traceback.print_exc()
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time.sleep(10)
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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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notice = zephyr.receive(block=False)
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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:
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print >>sys.stderr, '%s: zephyr=>humbug: Error relaying zephyr' % \
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(datetime.datetime.now())
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traceback.print_exc()
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time.sleep(2)
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maybe_restart_mirroring_script()
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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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update_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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if zsig.endswith("@(@color(blue))"):
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print "%s: zephyr=>humbug: Skipping message we got from Humbug!" % \
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(datetime.datetime.now())
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return
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zephyr_class = notice.cls.lower()
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if (zephyr_class == "message" and notice.recipient != ""):
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is_personal = True
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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_list = [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_list:
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huddle_recipients_list.append(to_humbug_username(notice.sender))
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huddle_recipients = ",".join(huddle_recipients_list)
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body = body.split("\n", 1)[1]
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if (zephyr_class == "mail" and notice.instance.lower() == "inbox"):
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is_personal = True
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# Drop messages not to the listed subscriptions
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if (zephyr_class not in current_zephyr_subs) and not \
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(is_personal and options.forward_personals):
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print "%s: zephyr=>humbug: Skipping ... %s/%s/%s" % \
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(datetime.datetime.now(), zephyr_class, notice.instance, is_personal)
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return
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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'] = 'personal'
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zeph['recipient'] = huddle_recipients
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elif is_personal:
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zeph['type'] = 'personal'
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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 != "":
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zeph['subject'] = notice.instance
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else:
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zeph["subject"] = "personal"
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# Add instances in for instanced personals
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if zeph['type'] == "personal" and notice.instance.lower() != "personal":
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zeph["content"] = "[-i %s]" % (notice.instance,) + "\n" + zeph["content"]
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zeph = decode_unicode_byte_strings(zeph)
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print "%s: zephyr=>humbug: received a message on %s/%s from %s..." % \
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(datetime.datetime.now(), zephyr_class, notice.instance, notice.sender)
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log.write(simplejson.dumps(zeph) + '\n')
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log.flush()
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res = send_humbug(zeph)
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if res.get("result") != "success":
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print >>sys.stderr, 'Error relaying zephyr'
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print zeph
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print res
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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:
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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_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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subs.add(("message", "*", "%me%"))
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if subscribed_to_mail_messages():
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subs.add(("mail", "inbox", "%me%"))
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if options.resend_log:
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with open('/mit/tabbott/Private/zephyrs', '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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print "%s: zephyr=>humbug: sending saved message to %s from %s..." % \
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(datetime.datetime.now(), zeph.get('stream', zeph.get('recipient')),
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zeph['sender'])
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send_humbug(zeph)
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except:
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print >>sys.stderr, 'Could not send saved zephyr'
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traceback.print_exc()
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time.sleep(2)
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print "%s: zephyr=>humbug: Starting receive loop." % (datetime.datetime.now(),)
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if options.enable_log:
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log_file = "/mit/tabbott/Private/zephyrs"
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else:
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log_file = "/dev/null"
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with open(log_file, 'a') as log:
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process_loop(log)
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def forward_to_zephyr(message):
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zsig = u"%s@(@color(blue))" % (username_to_fullname(message["sender_email"]))
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if ' dot ' in zsig:
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print "%s: humbug=>zephyr: ERROR! Couldn't compute zsig for %s!" % \
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(datetime.datetime.now(), message["sender_email"])
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return
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wrapped_content = "\n".join("\n".join(textwrap.wrap(line))
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for line in message["content"].split("\n"))
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print "%s: humbug=>zephyr: Forwarding message from %s" % \
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(datetime.datetime.now(), 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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if (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 = ["zwrite", "-s", zsig, "-c", zephyr_class, "-i", instance]
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elif message['type'] == "personal":
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recipient = to_zephyr_username(message["display_recipient"]["email"])
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zwrite_args = ["zwrite", "-s", zsig, recipient]
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elif message['type'] == "huddle":
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zwrite_args = ["zwrite", "-s", zsig, "-C"]
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zwrite_args.extend([to_zephyr_username(user["email"]).replace("@ATHENA.MIT.EDU", "")
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for user in message["display_recipient"]])
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p = subprocess.Popen(zwrite_args, stdin=subprocess.PIPE,
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stdout=subprocess.PIPE)
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p.communicate(input=wrapped_content.encode("utf-8"))
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def maybe_forward_to_zephyr(message):
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if (message["sender_email"] == options.user + "@mit.edu"):
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if not ((message["type"] == "stream") or
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(message["type"] == "personal" and
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message["display_recipient"]["email"].lower().endswith("mit.edu")) or
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(message["type"] == "huddle" and
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False not in [u["email"].lower().endswith("mit.edu") for u in
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message["display_recipient"]])):
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# Don't try forward personals/huddles with non-MIT users
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# to MIT Zephyr.
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return
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timestamp_now = datetime.datetime.now().strftime("%s")
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if float(message["timestamp"]) < float(timestamp_now) - 15:
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print "%s humbug=>zephyr: Alert! Out of order message: %s < %s" % \
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(datetime.datetime.now(), message["timestamp"], timestamp_now)
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return
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try:
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forward_to_zephyr(message)
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except:
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# Don't let an exception forwarding one message crash the
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# whole process
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traceback.print_exc()
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def humbug_to_zephyr(options):
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# Sync messages from zephyr to humbug
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print "%s: humbug=>zephyr: Starting syncing messages." % (datetime.datetime.now(),)
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humbug_client.call_on_each_message(maybe_forward_to_zephyr,
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options={"mirror": 'zephyr_mirror'})
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def subscribed_to_mail_messages():
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for (cls, instance, recipient) in parse_zephyr_subs(verbose=False):
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if (cls.lower() == "mail" and instance.lower() == "inbox"):
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return True
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return False
|
|
|
|
def add_humbug_subscriptions(verbose):
|
|
zephyr_subscriptions = set()
|
|
skipped = set()
|
|
for (cls, instance, recipient) in parse_zephyr_subs(verbose=verbose):
|
|
if cls == "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 == "mail" and instance == "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.subscribe(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
|
|
|
|
def valid_stream_name(name):
|
|
return re.match(r'^[\w.][\w. -]*$', name, flags=re.UNICODE)
|
|
|
|
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:
|
|
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
|
|
|
|
if options.sync_subscriptions:
|
|
print "Syncing your ~/.zephyr.subs to your Humbug Subscriptions!"
|
|
add_humbug_subscriptions(True)
|
|
sys.exit(0)
|
|
|
|
if options.forward_from_humbug:
|
|
print "This option is obsolete."
|
|
sys.exit(0)
|
|
|
|
# First check that there are no other bots running
|
|
cmdline = " ".join(sys.argv)
|
|
if "extra_mirror" in cmdline:
|
|
bot_name = "extra_mirror.py"
|
|
else:
|
|
bot_name = "zephyr_mirror.py"
|
|
proc = subprocess.Popen(['pgrep', '-U', os.environ["USER"], "-f", bot_name],
|
|
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
|
|
os.kill(int(pid), signal.SIGKILL)
|
|
|
|
child_pid = os.fork()
|
|
if child_pid == 0:
|
|
# Run the humbug => zephyr mirror in the child
|
|
humbug_to_zephyr(options)
|
|
sys.exit(0)
|
|
|
|
import zephyr
|
|
zephyr.init()
|
|
subs = zephyr.Subscriptions()
|
|
zephyr_to_humbug(options)
|