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#!/usr/bin/env python
#
# Copyright (C) 2009 W. Trevor King <wking@drexel.edu>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""Provide and email interface to the distributed bugtracker Bugs
Everywhere. Recieves incoming email via procmail and allows users to
select actions with their subject lines. Subject lines follow the
format
[be-bug] command (options) (args)
With the body of the email being used as the final argument for the
commands "new" and "comment", and ignored otherwise. The options and
arguments are split on whitespace, so don't use whitespace inside a
single argument.
Eventually we'll commit after every message.
"""
import cStringIO as StringIO
import email
import email.utils
import libbe.cmdutil, libbe.utility
import os
import os.path
import send_pgp_mime
import sys
import time
SUBJECT_COMMENT = "[be-bug]"
HANDLER_ADDRESS = "BE Bugs <wking@thor.physics.drexel.edu>"
LOGFILE = os.path.join(os.path.dirname(__file__), "be-handle-mail.log")
BE_DIR = os.path.expanduser("~/src/fun/be/be.email")
ALLOWED_COMMANDS = ["new", "comment", "list", "show", "help"]
class InvalidEmail (ValueError):
def __init__(self, msg, message):
ValueError.__init__(self, message)
self.msg = msg
class InvalidSubject (InvalidEmail):
pass
class InvalidCommand (InvalidEmail):
def __init__(self, msg, command):
message = "Invalid command '%s'" % command
ValueError.__init__(self, msg, message)
self.command = command
def get_body_type(msg):
for part in msg.walk():
if part.is_multipart():
continue
return (part.get_payload(decode=1), part.get_content_type())
def run_message(msg_text):
encoding = libbe.encoding.get_encoding()
libbe.encoding.set_IO_stream_encodings(encoding)
p=email.Parser.Parser()
msg=p.parsestr(msg_text)
if "subject" not in msg:
raise InvalidSubject(msg, "Email must contain a subject")
author = send_pgp_mime.source_email(msg, return_realname=True)
author_name = author[0]
author_email = author[1]
author_addr = email.utils.formataddr((author_name, author_email))
if LOGFILE != None:
f = file(LOGFILE, "w+")
f.write("handling %s\n" % (author_addr))
f.write("\n%s\n\n" % msg_text)
f.close()
id = msg["message-id"]
args = msg["subject"].split()
if len(args) < 1 or args[0] != SUBJECT_COMMENT:
raise InvalidSubject(msg, "Subject must start with '%s '" % SUBJECT_COMMENT)
elif len(args) < 2:
raise InvalidCommand(msg, "")
command = args[1]
if command not in ALLOWED_COMMANDS:
raise InvalidCommand(msg, command)
if len(args) > 2:
command_args = args[2:]
else:
command_args = []
if command in ["new", "comment"]:
body,type = get_body_type(msg)
if command == "new":
if "--reporter" not in args and "-r" not in args:
command_args = ["--reporter", author_addr] + command_args
body = body.strip().split("\n", 1)[0] # only take first line
elif command == "comment":
if "--author" not in args and "-a" not in args:
command_args = ["--author", author_addr] + command_args
if "--content-type" not in args and "-c" not in args:
command_args = ["--content-type", type] + command_args
if "--alt-id" not in args:
command_args = ["--alt-id", msg["message-id"]] + command_args
command_args.append(body)
if LOGFILE != None:
f = file(LOGFILE, "a+")
f.write("ping\n")
f.close()
# catch stdout and stderr
new_stdout = StringIO.StringIO()
new_stderr = StringIO.StringIO()
orig_stdout = sys.stdout
orig_stderr = sys.stderr
sys.stdout = new_stdout
sys.stderr = new_stderr
# run the command
os.chdir(BE_DIR)
ret = libbe.cmdutil.execute(command, command_args)
# restore stdout and stderr
sys.stdout.flush()
sys.stderr.flush()
sys.stdout = orig_stdout
sys.stderr = orig_stderr
out_text = new_stdout.getvalue()
err_text = new_stderr.getvalue()
if LOGFILE != None:
f = file(LOGFILE, "a+")
f.write("pong\n")
f.close()
author_addr = "wking"
response_header = [u"From: %s" % HANDLER_ADDRESS,
u"To: %s" % author_addr,
"Date: %s" % libbe.utility.time_to_str(time.time()),
"Content-Type: text/plain; charset=%s" % encoding,
"Content-Transfer-Encoding: 8bit",
"In-reply-to: %s" % (id),
u"Subject: %s Re: %s" % (SUBJECT_COMMENT, command),
]
response_body = [u"Results of running: (exit code %d)" % ret,
u" %s %s" % (command, " ".join(command_args)),
u""] # trailing endline on body
if len(out_text) > 0:
response_body.extend([u"", u"stdout:", u"", out_text])
if len(err_text) > 0:
response_body.extend([u"", u"stderr:", u"", err_text])
response_body.append(u"")
response_email = send_pgp_mime.Mail(u"\n".join(response_header),
u"\n".join(response_body))
if LOGFILE != None:
f = file(LOGFILE, "a+")
f.write("responding to %s: %s\n" % (author_addr, command))
f.write("\n%s\n\n" % send_pgp_mime.flatten(response_email.plain()))
f.close()
return response_email
def main():
msg_text = sys.stdin.read()
response_email = run_message(msg_text)
send_pgp_mime.mail(response_email.plain(), send_pgp_mime.sendmail)
if __name__ == "__main__":
main()
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