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import os
from subprocess import PIPE, Popen, TimeoutExpired
from subprocess import run as subprocess_run
import jwebmail.model.jwebmail_pb2 as pb2
class QMAuthError(Exception):
def __init__(self, msg, rc, response=None):
super().__init__(msg, rc, response)
self.msg = msg
self.rc = rc
self.response = response
class QMailAuthuser:
def __init__(
self, username, password, prog, mailbox_path, virtual_user, authenticator
):
self._username = username
self._password = password
self._prog = prog
self._mailbox_path = mailbox_path
self._virtual_user = virtual_user
self._authenticator = authenticator
def verify_user(self):
try:
completed_proc = subprocess_run(
f"{self._authenticator} true 3<&0",
input=f"{self._username}\0{self._password}\0\0".encode(),
shell=True,
timeout=2,
check=False,
)
if completed_proc.returncode == 0:
return True
elif completed_proc.returncode == 1:
return False
else:
raise QMAuthError("authentication error", completed_proc.returncode)
except TimeoutExpired:
return False
def read_headers_for(self, folder, start, end, sort):
req = pb2.ListReq(folder=folder, start=start, end=end, sort=sort)
resp = self.build_and_run("list", req.SerializeToString())
r = pb2.ListResp()
r.ParseFromString(resp)
return [
{
"message_handle": lmh.mid,
"byte_size": lmh.byte_size,
"unread": lmh.unread,
"date_received": lmh.rec_date,
"head": self._mail_header(lmh.header),
}
for lmh in r.mail_heads
]
def count(self, folder):
req = pb2.StatsReq(folder=folder)
resp = self.build_and_run("count", req.SerializeToString())
r = pb2.StatsResp()
r.ParseFromString(resp)
return {
"byte_size": r.byte_size,
"total_mails": r.mail_count,
"unread_mails": r.unread_count,
}
def show(self, folder, msgid):
req = pb2.ShowReq(folder=folder, mid=msgid)
resp = self.build_and_run("read", req.SerializeToString())
r = pb2.ShowResp()
r.ParseFromString(resp)
return {
"head": self._mail_header(r.mail.head),
"body": self._mail_body(r.mail.body),
}
def raw(self, folder, mid, path):
req = pb2.RawReq(folder=folder, mid=mid, path=path)
resp = self.build_and_run("raw", req.SerializeToString())
r = pb2.RawResp()
r.ParseFromString(resp)
return {"head": self._mime_header(r.header), "body": r.body}
#
def search(self, pattern, folder):
req = pb2.SearchReq(folder=folder, pattern=pattern)
resp = self.build_and_run("search", req.SerializeToString())
r = pb2.SearchResp()
r.ParseFromString(resp)
return r
def folders(self):
resp = self.build_and_run("folders", pb2.FoldersReq().SerializeToString())
result = pb2.FoldersResp()
result.ParseFromString(resp)
return list(result.folders) + [""]
def move(self, mid, from_f, to_f):
req = pb2.MoveReq(mid=mid, from_f=from_f, to_f=to_f)
resp = self.build_and_run("move", req.SerializeToString())
r = pb2.MoveResp()
r.ParseFromString(resp)
return True
def remove(self, folder, msgid):
req = pb2.RemoveReq(folder=folder, mid=msgid)
resp = self.build_and_run("remove", req.SerializeToString())
r = pb2.RemoveResp()
r.ParseFromString(resp)
return True
@staticmethod
def _address(addr):
if not addr:
return None
a = {"address": addr.address}
if addr.HasField("name"):
a["display_name"] = addr.name
return a
@classmethod
def _mail_header(cls, mail_head):
h = mail_head
return {
"date": h.send_date,
"sender": cls._address(h.sender),
"cc": [cls._address(x) for x in h.cc if x],
"bcc": [cls._address(x) for x in h.bcc if x],
"from": [cls._address(x) for x in h.written_from if x],
"reply_to": [cls._address(x) for x in h.reply_to if x],
"to": [cls._address(x) for x in h.send_to if x],
"subject": h.subject,
"comments": list(h.comments),
"keywords": list(h.keywords),
"mime": cls._mime_header(h.mime),
}
@staticmethod
def _mime_header(mime_head):
mh = {
"content_maintype": mime_head.maintype,
"content_subtype": mime_head.subtype,
}
if (
mime_head.contentdispo
== pb2.MIMEHeader.ContentDisposition.CONTENT_DISPOSITION_NONE
):
mh["content_disposition"] = None
elif (
mime_head.contentdispo
== pb2.MIMEHeader.ContentDisposition.CONTENT_DISPOSITION_INLINE
):
mh["content_disposition"] = "inline"
elif (
mime_head.contentdispo
== pb2.MIMEHeader.ContentDisposition.CONTENT_DISPOSITION_ATTACHMENT
):
mh["content_disposition"] = "attachment"
if mime_head.HasField("file_name"):
mh["filename"] = mime_head.file_name
return mh
@classmethod
def _mail_body(cls, body):
if body.WhichOneof("Body") == "discrete":
return body.discrete
elif body.WhichOneof("Body") == "multipart":
res = {"parts": []}
for mp in body.multipart.parts:
r = {"head": cls._mime_header(mp.mime_header)}
if (
mp.mime_header.contentdispo
!= pb2.MIMEHeader.ContentDisposition.CONTENT_DISPOSITION_ATTACHMENT
):
r["body"] = cls._mail_body(mp.body)
res["parts"].append(r)
if body.multipart.HasField("preamble"):
res["preamble"] = body.multipart.preamble
if body.multipart.HasField("epilogue"):
res["epilogue"] = body.multipart.epilogue
return res
elif body.WhichOneof("Body") == "mail":
return {
"head": cls._mail_header(body.mail.head),
"body": cls._mail_body(body.mail.body),
}
else:
assert False
def _build_arg(self, user_mail_addr, mode, rp):
idx = user_mail_addr.find("@")
user_name = user_mail_addr[:idx]
cmdline = [
"moveto3.py",
"-a",
self._authenticator,
str(rp),
self._prog,
self._mailbox_path,
self._virtual_user,
user_name,
mode,
]
return cmdline
def _read_qmauth(self, cmd, args, rp, wp):
with Popen(cmd, stdin=PIPE, stdout=PIPE, pass_fds=[rp], bufsize=0) as popen:
os.close(rp)
os.write(wp, f"{self._username}\0{self._password}\0\0".encode())
os.close(wp)
r = popen.stdout.read(10)
if popen.poll():
raise QMAuthError(
"qmail-authuser unexpectedly exited", popen.returncode, r
)
assert r == b"OPEN\n"
popen.stdin.write(args)
popen.stdin.close()
inp = popen.stdout.readall()
try:
popen.wait(timeout=2)
except TimeoutExpired:
popen.kill()
popen.poll()
rc = popen.returncode
if rc == 0:
return inp
elif rc == 3:
raise QMAuthError("error reported by extractor", 3, inp)
else:
raise QMAuthError("got unsuccessful return code by qmail-authuser", rc, inp)
def build_and_run(self, mode, args):
(rp, wp) = os.pipe()
cmd = self._build_arg(self._username, mode, rp)
return self._read_qmauth(cmd, args, rp, wp)
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