[tahoe-lafs-trac-stream] [Tahoe-LAFS] #3480: The introducer writes a garbage fURL if created/started without a "good" environment

[Tahoe-LAFS]

#3480: The introducer writes a garbage fURL if created/started without a "good"
environment
---------------------+---------------------------
 Reporter:  exarkun  |          Owner:
     Type:  defect   |         Status:  new
 Priority:  normal   |      Milestone:  undecided
Component:  unknown  |        Version:  n/a
 Keywords:           |  Launchpad Bug:
---------------------+---------------------------
 {{{
 [exarkun at baryon:/tmp/demo]$ ~/VirtualEnvs/tahoe-lafs/bin/tahoe create-
 introducer --listen=tcp --hostname=localhost introducer
 Introducer created in '/tmp/demo/introducer'
 (tahoe-lafs)
 [exarkun at baryon:/tmp/demo]$ cat introducer/tahoe.cfg
 # -*- mode: conf; coding: utf-8 -*-

 # This file controls the configuration of the Tahoe node that
 # lives in this directory. It is only read at node startup.
 # For details about the keys that can be set here, please
 # read the 'docs/configuration.rst' file that came with your
 # Tahoe installation.


 [node]
 nickname =
 reveal-IP-address = true
 web.port =
 web.static = public_html

 #log_gatherer.furl =
 #timeout.keepalive =
 #timeout.disconnect =
 #ssh.port = 8022
 #ssh.authorized_keys_file = ~/.ssh/authorized_keys
 (tahoe-lafs)
 [exarkun at baryon:/tmp/demo]$ PATH= ~/VirtualEnvs/tahoe-lafs/bin/tahoe run
 introducer/
 'tahoe run' in '/tmp/demo/introducer'
 running node in '/tmp/demo/introducer'
 2020-10-16T11:19:24-0400 [twisted.scripts._twistd_unix.UnixAppLogger#info]
 twistd 20.3.0 (/home/exarkun/VirtualEnvs/tahoe-lafs/bin/python2.7 2.7.17)
 starting up.
 2020-10-16T11:19:24-0400 [twisted.scripts._twistd_unix.UnixAppLogger#info]
 reactor class: twisted.internet.epollreactor.EPollReactor.
 2020-10-16T11:19:25-0400 [-] Foolscap logging initialized
 2020-10-16T11:19:25-0400 [-] Note to developers: twistd.log does not
 receive very much.
 2020-10-16T11:19:25-0400 [-] Use 'flogtool tail -c
 NODEDIR/private/logport.furl' instead
 2020-10-16T11:19:25-0400 [-] and read docs/logging.rst
 2020-10-16T11:19:25-0400 [-] My pid: 31023
 2020-10-16T11:19:25-0400 [-] Listener starting on 44729
 2020-10-16T11:19:25-0400 [foolscap.pb.Listener#info] Starting factory
 <Listener at 0x7fbaf7d8a510 on
 CleanupEndpoint(_wrapped=<twisted.internet.endpoints.AdoptedStreamServerEndpoint
 object at 0x7fbaf7d8ac10>, _fd=7, _listened=True) with tub
 m3krismjjaeb5akzrdb64bqkjajdgh
 e6>
 2020-10-16T11:19:25-0400 [-] Listener starting on 38895
 2020-10-16T11:19:25-0400 [foolscap.pb.Listener#info] Starting factory
 <Listener at 0x7fbaf7b58690 on
 <twisted.internet.endpoints.TCP4ServerEndpoint object at 0x7fbaf7b583d0>
 with tub e3gm4ibpvwaeqtetgygu3rwqdywdjc4o>
 2020-10-16T11:19:25-0400 [-] Listener starting on 55485
 2020-10-16T11:19:25-0400 [foolscap.pb.Listener#info] Starting factory
 <Listener at 0x7fbaf7df4450 on
 CleanupEndpoint(_wrapped=<twisted.internet.endpoints.AdoptedStreamServerEndpoint
 object at 0x7fbaf7df4e10>, _fd=6, _listened=True) with tub
 nnh6obbkhulamphdc75p4ex3ogs24e
 6z>
 2020-10-16T11:19:25-0400 [-] introducer running
 ^C2020-10-16T11:19:26-0400 [-] Received SIGINT, shutting down.
 2020-10-16T11:19:26-0400 [-] (TCP Port 55485 Closed)
 2020-10-16T11:19:26-0400 [foolscap.pb.Listener#info] Stopping factory
 <Listener at 0x7fbaf7df4450 on
 CleanupEndpoint(_wrapped=<twisted.internet.endpoints.AdoptedStreamServerEndpoint
 object at 0x7fbaf7df4e10>, _fd=6, _listened=True) with tub
 nnh6obbkhulamphdc75p4ex3ogs24e
 6z>
 2020-10-16T11:19:26-0400 [-] (TCP Port 38895 Closed)
 2020-10-16T11:19:26-0400 [foolscap.pb.Listener#info] Stopping factory
 <Listener at 0x7fbaf7b58690 on
 <twisted.internet.endpoints.TCP4ServerEndpoint object at 0x7fbaf7b583d0>
 with tub e3gm4ibpvwaeqtetgygu3rwqdywdjc4o>
 2020-10-16T11:19:26-0400 [-] (TCP Port 44729 Closed)
 2020-10-16T11:19:26-0400 [foolscap.pb.Listener#info] Stopping factory
 <Listener at 0x7fbaf7d8a510 on
 CleanupEndpoint(_wrapped=<twisted.internet.endpoints.AdoptedStreamServerEndpoint
 object at 0x7fbaf7d8ac10>, _fd=7, _listened=True) with tub
 m3krismjjaeb5akzrdb64bqkjajdgh
 e6>
 2020-10-16T11:19:26-0400 [-] Main loop terminated.
 2020-10-16T11:19:26-0400 [twisted.scripts._twistd_unix.UnixAppLogger#info]
 Server Shut Down.

 (tahoe-lafs)
 [exarkun at baryon:/tmp/demo]$ cat introducer/private/introducer.furl
 pb://e3gm4ibpvwaeqtetgygu3rwqdywdjc4o@/vhnnhwhbp56onhpdekef2l7igia4hbib
 }}}

 The introducer server has support code for dealing with `tub.location`
 being missing.  However, this code generates garbage fURLs if neither `ip`
 nor `ifconfig` can be found.  As a bonus, $PATH is not searched for these
 tools - just a hard-coded list of common locations.

--
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3480>
Tahoe-LAFS <https://Tahoe-LAFS.org>
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