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Re: [tor-bugs] #22101 [Core Tor/Tor]: Can't have relative DataDirectory with CookieAuthentication enabled
#22101: Can't have relative DataDirectory with CookieAuthentication enabled
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Reporter: pastly | Owner:
Type: defect | Status: new
Priority: Medium | Milestone: Tor: 0.3.1.x-final
Component: Core Tor/Tor | Version: Tor: 0.3.0.6
Severity: Normal | Resolution:
Keywords: | Actual Points:
Parent ID: | Points:
Reviewer: | Sponsor:
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Comment (by Jigsaw52):
I've looked into this for a bit and found the cause of the issue:
In the function options_act (in config.c), finish_daemon is called and
finish_daemon changes the current directory to the DataDirectory.
Later on options_act, init_control_cookie_authentication is called, which
will try to create the control_auth_cookie file inside the DataDirectory.
Because DataDirectory is a relative path, it will try to create the
control_auth_cookie file inside CURRENT_DIR/DataDirectory.
The problem is that, because CURRENT_DIR was changed to DataDirectory by
finish_daemon, it will try to create the control_auth_cookie file inside
DataDirectory/DataDirectory which does not exist, resulting in the error
we see on the logs.
There may more bugs similar to this, as any call to get_datadir_fname
after CURRENT_DIR is changed will result in the wrong path when a relative
path is used for the DataDirectory.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22101#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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