[tor-dev] No Control Socket when DisableNetwork 1

[iry]

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Dear Tor Developers,

According to the Tor manual:
https://www.torproject.org/docs/tor-manual-dev.html.en

> DisableNetwork 0|1 When this option is set, we don’t listen for or
> accept any connections other than controller connections, and we
> close (and don’t reattempt) any outbound connections. Controllers
> sometimes use this option to avoid using the network until Tor is
> fully configured. (Default: 0)

However, it seems when DisableNetwork is set to 1,
/var/run/tor/control does not exist anymore making us cannot get a
controller from socket file.
(stem.control.Controller.from_socket_file() is affected in this case:
https://stem.torproject.org/api/control.html#stem.control.Controller.fro
m_socket_file)

To reproduce this, I tested both Tor 0.3.1.9 and 0.3.2.9 on Debian
Stretch:

When DisableNetwork 0, run:
systemctl --no-pager restart tor at default

> user at host:~$ ls -l /var/run/tor/ total 1328 srw-rw---- 1 debian-tor
> debian-tor       0 Jan 19 21:14 control -rw-r----- 1 debian-tor
> debian-tor      32 Jan 19 21:14 control.authcookie -rw-r----- 1
> debian-tor debian-tor 1350116 Jan 19 21:14 log srw-rw-rw- 1
> debian-tor debian-tor       0 Jan 19 21:14 socks -rw-r--r-- 1
> debian-tor debian-tor       6 Jan 19 21:14 tor.pid

When DisableNetwork 1, run:
systemctl --no-pager restart tor at default

> user at host:~$ ls -l /var/run/tor/ total 1244 -rw-r----- 1 debian-tor
> debian-tor      32 Jan 19 21:00 control.authcookie -rw-r----- 1
> debian-tor debian-tor 1269005 Jan 19 21:00 log

I searched on Tor-trac but did not find any similar report. Therefore,
would you please tell me wether Tor intentionally behaves like this or
this is a bug? (If this is a bug, I can definitely help to report it
to Tor-trac.)

Thank you so much!

Best Regards,
iry
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