Updated config docs. Added errors if we're not listening but were told
to enable storage, helper, or if we're the Introducer server.
closes ticket:2816
"gifts" are third-party references (where Alice sends Bob a reference to
Carol, and Carol lives in a different Tub than either Alice or Bob).
Tahoe doesn't currently use these, and they make it possible for e.g. a
server to provoke a client into making a connection to an IP address of
the server's choosing. If the client isn't configured otherwise, this
would use raw TCP (revealing the client's IP address) even if the
connection to the server used Tor.
A connection policy of `tcp: tor` would block this, but it seems like a
good idea to disable gifts entirely.
closes ticket:2810
This adds client-side support for automatically connecting to Tor and
I2P -hosted servers (when the server advertises a "tor:" or "i2p:"
-style connection hint, and when the necessary extra libraries are
installed, and when a Tor/I2P daemon is running and reachable at the
default location).
The new `[connections]` section of `tahoe.cfg` can include `tcp: tor` to
make all TCP connections use Tor instead. This ought to hide the
client's IP address from servers and the Introducer.
The new `[tor]` and `[i2p]` sections of `tahoe.cfg` will control how
Tor/I2P connections are made (whether to spin up a new Tor daemon, what
port to use to connect to an existing one, etc). `configuration.rst`
explains the possible syntax. Note that only the default I2P connection
method is implemented in Foolscap-0.12.2, but not the alternatives, so
many options that are legal syntax for `tahoe.cfg` will not work yet.
It also enables the `connections` section of `private/servers.yaml` to
override the connection-handler mapping.
refs ticket:517
closes ticket:2788
Foolscap has limitations that prevent us from accepting anything but a
TCP endpoint, but that will change in the future, so make the tahoe.cfg
syntax accept an endpoint, but then reject non-TCP ones. See the ticket
for details: refs ticket:2813.
This depends upon the new `foolscap.connections.tor.socks_port(host,
port)` API in foolscap-0.12.2, so it bumps the dependency to that (the
previous commit depended upon 0.12.1, but I hadn't gotten around to
updating the dep before now).
Note that many of the Foolscap handler-creation functions are still
stubbed out, so Tahoe won't be able to honor the full range of config
syntax until foolscap support is complete.
Now you can do `pip install tahoe-lafs[tor]` to get tor support.
The necessary support libraries are also installed with `[test]`, so
unit tests can rely upon importing txtorcon and friends.
YAML, like JSON, is all-unicode. StorageFarmBroker.set_static_servers()
is defined to take an all-unicode dictionary (the "storage:" key from
private/servers.yaml), so the server_id keys it gets will be unicode.
NativeStorageServer is defined to accept server_ids which are bytes (at
least it is now). The tests were only passing bytes into
set_static_servers(), whereas a real launch passed unicode in, causing a
problem when NativeStorageServer tried to base32.a2b() the pubkey and
choked on the unicode it received.
This fixes set_static_servers() to convert the server_id to bytes, and
changes NativeStorageServer to assert that it gets bytes. It also fixes
the test to match real usage more closely.
The node now attempts to create Tor/I2P connection handlers (if the
right libraries are available), and will use them for tor/i2p FURL hints
by default. For now it only creates default handlers: there is not yet
any code to interpret the `[tor]`/`[i2p]` sections of tahoe.cfg which
would let you override that process.
The node also parses the `[connections]` section, allowing `tcp: tor` to
use Tor for all outbound TCP connections. It defaults to `tcp: tcp`, of
course.
Static storage-server connections will now honor the `connections:`
overrides in `servers.yaml`, allowing specific servers to use TCP where
they would normally be restricted to Tor.
refs ticket:2788
refs ticket:517
This adds Node._create_tub(), which knows how to make a Tub with all the
right options and connection handlers that were specified in
tahoe.cfg (the connection handlers are disabled for now, but they'll get
implemented soon).
The new Node.create_main_tub() calls it. This main Tub is used:
* to connect to the Introducer
* to host the Helper (if enabled)
* to host the Storage Server (if enabled)
Node._create_tub() is also passed into the StorageFarmBroker, which
passes it into each NativeStorageServer, to create the (separate) Tub
for each server connection. _create_tub knows about the options, and
NativeStorageServer can override the connection handlers. This way we
don't need to pass tub options or default handlers into Client,
StorageFarmBroker, or NativeStorageServer.
A number of tests create NativeStorageServer objects: these were updated
to match the new arguments. test_storage_client was simplified because
we no longer need to mock out the Tub() constructor.
A minimally-defined static server only specifies server_id,
anonymous-storage-FURL, and permutation-seed-base32. But the WUI Welcome
page wouldn't render (it raised an exception) without also defining
nickname and version. This allows those values to be missing.
This follows the latest comments in ticket:2788, moving the static
server definitions from "connections.yaml" to "servers.yaml". It removes
the "connections" and "introducers" blocks from that file, leaving it
responsible for just static servers (I think connections and introducers
can be configured from tahoe.cfg).
This feeds all the static server specs to the StorageFarmBroker in a
single call, rather than delivering them as simulated introducer
announcements. It cleans up the way handlers are specified too (the
handler dictionary is ignored, but that will change soon).
They're the same thing, but knowing that is the responsibility of the
caller, not NativeStorageServer. Try to normalize on "server_id" as the
spelling. Remove support for missing key_s, now that we require V2
introductions.
* tub.port should be an endpoint
* web.port should be a strports string (with "tcp:" prefix)
* tub.location should include "tcp:" hint types
* FURL hints should include "tcp:" hint types
This is a change I've wanted to make for many years, because when we get
to HTTP-based servers, we won't have tubids for them. What held me back
was that there's code all over the place that uses the serverid for
various purposes, so I wasn't sure it was safe. I did a big push a few
years ago to use IServer instances instead of serverids in most
places (in #1363), and to split out the values that actually depend upon
tubid into separate accessors (like get_lease_seed and
get_foolscap_write_enabler_seed), which I think took care of all the
important uses.
There are a number of places that use get_serverid() as dictionary key
to track shares (Checker results, mutable servermap). I believe these
are happy to use pubkeys instead of tubids: the only thing they do with
get_serverid() is to compare it to other values obtained from
get_serverid(). A few places in the WUI used serverid to compute display
values: these were fixed.
The main trouble was the Helper: it returns a HelperUploadResults (a
Copyable) with a share->server mapping that's keyed by whatever the
Helper's get_serverid() returns. If the uploader and the helper are on
different sides of this change, the Helper could return values that the
uploader won't recognize. This is cosmetic: that mapping is only used to
display the upload results on the "Recent and Active Operations" page.
I've added code to StorageFarmBroker.get_stub_server() to fall back to
tubids when looking up a server, so this should still work correctly
when the uploader is new and the Helper is old. If the Helper is new and
the uploader is old, the upload results will show unusual server ids.
refs ticket:1363
