Commit graph

24 commits

Author SHA1 Message Date
Jason Rhinelander
6b785958b4
Clean up sys-or-submodule code, support system fmt, rename loki-mq
Synced up with oxen-storage-server.

Also rename loki-mq submodule to oxen-mq.
2022-05-30 15:59:03 -03:00
Jason Rhinelander
47ff596533
Remove UPnP support
We have disabled uPnP by default for nearly a year now (#1423) with no
adverse affects; this commit finishes it off entirely, removing it from
the codebase.

Fixes #1419 -- see discussion in that issue for why UPnP really doesn't
add much utility to Oxen.
2022-04-14 14:34:49 -03:00
Jason Rhinelander
6fcfd0b8ba
Update oxenmq to latest oxen-mq+oxen-encoding
All the encoding parts move to oxen-encoding recently; this updates to
the latest version of oxen-mq, adds oxen-encoding, and converts
everything to use oxenc headers rather than the oxenmq compatibility
shims.
2022-04-14 14:32:01 -03:00
Thomas Winget
435c189a9b sqlitecpp 2021-10-04 20:33:24 -04:00
Jason Rhinelander
eefd42f93f Add fmtlib::fmt backport of C++20 std::format
Because I'm tired of waiting for std::format.
2021-09-02 17:25:13 -03:00
Sean Darcy
c74fee0643 update loki-mq 2021-01-19 11:48:46 -04:00
Sean Darcy
bacd5381f0 update gitmodules for randomxl 2021-01-19 11:48:46 -04:00
Jason Rhinelander
1dd98f3dae std::filesystem
Converts all use of boost::filesystem to std::filesystem.

For macos and potentially other exotic systems where std::filesystem
isn't available, we use ghc::filesystem instead (which is a drop-in
replacement for std::filesystem, unlike boost::filesystem).

This also greatly changes how we handle filenames internally by holding
them in filesystem::path objects as soon as possible (using
fs::u8path()), rather than strings, which avoids a ton of issues around
unicode filenames.  As a result this lets us drop the boost::locale
dependency on Windows along with a bunch of messy Windows ifdef code,
and avoids the need for doing gross boost locale codecvt calls.
2020-10-24 12:45:37 -03:00
Jason Rhinelander
2246dc8104 Switch to upstream uWebSockets
Required mingw patches are now merged on upstream master.
2020-08-09 11:38:00 -03:00
Jason Rhinelander
f96350075c Update cpr submodule to upstream
Upstream master now has the patches we need merged.
2020-08-07 17:14:03 -03:00
Jason Rhinelander
fb0aff57f6 Replace epee http client with curl-based client
In short: epee's http client is garbage, standard violating, and
unreliable.

This completely removes the epee http client support and replaces it
with cpr, a curl-based C++ wrapper.  rpc/http_client.h wraps cpr for RPC
requests specifically, but it is also usable directly.

This replacement has a number of advantages:

- requests are considerably more reliable.  The epee http client code
  assumes that a connection will be kept alive forever, and returns a
  failure if a connection is ever closed.  This results in some very
  annoying things: for example, preparing a transaction and then waiting
  a long tim before confirming it will usually result in an error
  communication with the daemon.  This is just terribly behaviour: the
  right thing to do on a connection failure is to resubmit the request.

- epee's http client is broken in lots of other ways: for example, it
  tries throwing SSL at the port to see if it is HTTPS, but this is
  protocol violating and just breaks (with a several second timeout) on
  anything that *isn't* epee http server (for example, when lokid is
  behind a proxying server).

- even when it isn't doing the above, the client breaks in other ways:
  for example, there is a comment (replaced in this PR) in the Trezor PR
  code that forces a connection close after every request because epee's
  http client doesn't do proper keep-alive request handling.

- it seems noticeably faster to me in practical use in this PR; both
  simple requests (for example, when running `lokid status`) and
  wallet<->daemon connections are faster, probably because of crappy
  code in epee.  (I think this is also related to the throw-ssl-at-it
  junk above: the epee client always generates an ssl certificate during
  static initialization because it might need one at some point).

- significantly reduces the amount of code we have to maintain.

- removes all the epee ssl option code: curl can handle all of that just
  fine.

- removes the epee socks proxy code; curl can handle that just fine.
  (And can do more: it also supports using HTTP/HTTPS proxies).

- When a cli wallet connection fails we know show why it failed (which
  now is an error message from curl), which could have all sorts of
  reasons like hostname resolution failure, bad ssl certificate, etc.
  Previously you just got a useless generic error that tells you
  nothing.

Other related changes in this PR:

- Drops the check-for-update and download-update code.  To the best of
my knowledge these have never been supported in loki-core and so it
didn't seem worth the trouble to convert them to use cpr for the
requests.

- Cleaned up node_rpc_proxy return values: there was an inconsistent mix
  of ways to return errors and how the returned strings were handled.
  Instead this cleans it up to return a pair<bool, val>, which (with
  C++17) can be transparently captured as:

    auto [success, val] = node.whatever(req);

  This drops the failure message string, but it was almost always set to
  something fairly useless (if we want to resurrect it we could easily
  change the first element to be a custom type with a bool operator for
  success, and a `.error` attribute containing some error string, but
  for the most part the current code wasn't doing much useful with the
  failure string).

- changed local detection (for automatic trusted daemon determination)
  to just look for localhost, and to not try to resolve anything.
  Trusting non-public IPs does not work well (e.g. with lokinet where
  all .loki addresses resolve to a local IP).

- ssl fingerprint option is removed; this isn't supported by curl
  (because it is essentially just duplicating what a custom cainfo
  bundle does)

- --daemon-ssl-allow-chained is removed; it wasn't a useful option (if
  you don't want chaining, don't specify a cainfo chain).

- --daemon-address is now a URL instead of just host:port.  (If you omit
  the protocol, http:// is prepended).

- --daemon-host and --daemon-port are now deprecated and produce a
  warning (in simplewallet) if used; the replacement is to use
  --daemon-address.

- --daemon-ssl is deprecated; specify --daemon-address=https://whatever
  instead.

- the above three are now hidden from --help

- reordered the wallet connection options to make more logical sense.
2020-08-07 17:14:03 -03:00
Jason Rhinelander
43f2dfba50 Windows fixes
- Add libuv submodule (only needed and built on Windows)

- Temporarily switch uWebSockets to my github repo: I submitted some
mingw compilation fixes upstream; as soon as a new upstream release
comes out we will switch this back to the upstream repo.

- Switch BOOST_SCOPE_EXIT to LOKI_DEFER

- Don't compile `closefrom()` on Windows (it isn't used, and generates
an unused function warning).
2020-08-07 17:14:02 -03:00
Jason Rhinelander
42a7e83c33 Replace epee http rpc server with uWebSockets
This replaces the NIH epee http server which does not work all that well
with an external C++ library called uWebSockets.  Fundamentally this
gives the following advantages:

- Much less code to maintain
- Just one thread for handling HTTP connections versus epee's pool of
threads
- Uses existing LokiMQ job server and existing thread pool for handling
the actual tasks; they are processed/scheduled in the same "rpc" or
"admin" queues as lokimq rpc calls.  One notable benefit is that "admin"
rpc commands get their own queue (and thus cannot be delayed by long rpc
commands).  Currently the lokimq threads and the http rpc thread pool
and the p2p thread pool and the job queue thread pool and the dns lookup
thread pool and... are *all* different thread pools; this is a step
towards consolidating them.
- Very little mutex contention (which has been a major problem with epee
RPC in the past): there is one mutex (inside uWebSockets) for putting
responses back into the thread managing the connection; everything
internally gets handled through (lock-free) lokimq inproc sockets.
- Faster RPC performance on average, and much better worst case
performance.  Epee's http interface seems to have some race condition
that ocassionally stalls a request (even a very simple one) for a dozen
or more seconds for no good reason.
- Long polling gets redone here to no longer need threads; instead we
just store the request and respond when the thread pool, or else in a
timer (that runs once/second) for timing out long polls.

---

The basic idea of how this works from a high level:

We launch a single thread to handle HTTP RPC requests and response data.
This uWebSockets thread is essentially running an event loop: it never
actually handles any logic; it only serves to shuttle data that arrives
in a request to some other thread, and then, at some later point, to
send some reply back to that waiting connection.  Everything is
asynchronous and non-blocking here: the basic uWebSockets event loop
just operates as things arrive, passes it off immediately, and goes back
to waiting for the next thing to arrive.

The basic flow is like this:

    0. uWS thread -- listens on localhost:22023
    1. uWS thread -- incoming request on localhost:22023
    2. uWS thread -- fires callback, which injects the task into the LokiMQ job queue
    3. LMQ main loop -- schedules it as an RPC job
    4. LMQ rpc thread -- Some LokiMQ thread runs it, gets the result
    5. LMQ rpc thread -- Result gets queued up for the uWS thread
    6. uWS thread -- takes the request and starts sending it
       (asynchronously) back to the requestor.

In more detail:

uWebSockets has registered has registered handlers for non-jsonrpc
requests (legacy JSON or binary).  If the port is restricted then admin
commands get mapped to a "Access denied" response handler, otherwise
public commands (and admin commands on an unrestricted port) go to the
rpc command handler.

POST requests to /json_rpc have their own handler; this is a little
different than the above because it has to parse the request before it
can determine whether it is allowed or not, but once this is done it
continues roughly the same as legacy/binary requests.

uWebSockets then listens on the given IP/port for new incoming requests,
and starts listening for requests in a thread (we own this thread).
When a request arrives, it fires the event handler for that request.
(This may happen multiple times, if the client is sending a bunch of
data in a POST request).  Once we have the full request, we then queue
the job in LokiMQ, putting it in the "rpc" or "admin" command
categories.  (The one practical different here is that "admin" is
configured to be allowed to start up its own thread if all other threads
are busy, while "rpc" commands are prioritized along with everything
else.)  LokiMQ then schedules this, along with native LokiMQ "rpc." or
"admin." requests.

When a LMQ worker thread becomes available, the RPC command gets called
in it and runs.  Whatever output it produces (or error message, if it
throws) then gets wrapped up in jsonrpc boilerplate (if necessary), and
delivered to the uWebSockets thread to be sent in reply to that request.

uWebSockets picks up the data and sends whatever it can without
blocking, then buffers whatever it couldn't send to be sent again in a
later event loop iteration once the requestor can accept more data.
(This part is outside lokid; we only have to give uWS the data and let
it worry about delivery).

---

PR specifics:

Things removed from this PR:

1. ssl settings; with this PR the HTTP RPC interface is plain-text.  The
previous default generated a self-signed certificate for the server on
startup and then the client accepted any certificate.  This is actually
*worse* than unencrypted because it is entirely MITM-readable and yet
might make people think that their RPC communication is encrypted, and
setting up actual certificates is difficult enough that I think most
people don't bother.

uWebSockets *does* support HTTPS, and we could glue the existing options
into it, but I'm not convinced it's worthwhile: it works much better to
put HTTPS in a front-end proxy holding the certificate that proxies
requests to the backend (which can then listen in restricted mode on
some localhost port).  One reason this is better is that it is much
easier to reload and/or restart such a front-end server, while
certificate updates with lokid require a full restart.  Another reason
is that you get an error page instead of a timeout if something is wrong
with the backend.  Finally we also save having to generate a temporary
certificate on *every* lokid invocation.

2. HTTP Digest authentication.  Digest authentication is obsolete (and
was already obsolete when it got added to Monero).  HTTP-Digest was
originally an attempt to provide a password authentication mechanism
that does not leak the password in transit, but still required that the
server know the password.  It only has marginal value against replay
attacks, and is made entirely obsolete by sending traffic over HTTPS
instead.  No client out there supports Digest but *not* Basic auth, and
so given the limited usefulness it seems pointless to support more than
Basic auth for HTTP RPC login.

What's worse is that epee's HTTP Digest authentication is a terrible
implementation: it uses boost::spirit -- a recursive descent parser
meant for building complex language grammars -- just to parse a single
HTTP header for Digest auth.  This is a big load of crap that should
never have been accepted upstream, and that we should get rid of (even
if we wanted to support Digest auth it takes less than 100 lines of code
to do it when *not* using a recursive descent parser).
2020-08-07 17:14:02 -03:00
Jason Rhinelander
d1f398cc2b Switch miniupnp from monero to upstream
The monero version is just an improperly forked mirror of upstream that
tends to lag behind.  Switch to upstream miniupnp instead.
2020-06-14 22:10:38 -03:00
Jason Rhinelander
f4e9ea7d40 Remove unbound submodule
There's really no reason to submodule it - we work with pretty much any
libunbound version, and it's a very commonly available library
(comparable to sqlite3 or boost, which we don't submodule).

This removes the submodule and switches it to a hard dependency.
2020-06-11 15:02:21 -03:00
Jason Rhinelander
5954cb8234 Update and submodule gtest
The gtest version bundled inside tests/ is ancient (7 years old) and
doesn't build properly for some compilers.

Replace it with a current gtest submodule in external/.
2020-06-09 23:06:54 -03:00
Jason Rhinelander
c98688fd84 Convert quorumnet to loki-mq
This adds the loki-mq dependency and replaces SNNetwork with it (along
with some syntax updates for how loki-mq changed a bit from SNNetwork).

This also replaces common/hex.h and common/string_view.h with loki-mq's
faster (hex) and more complete and tested (string_view) implementations.
2020-03-06 00:36:57 -04:00
Jason Rhinelander
94b5857a84 Merge remote-tracking branch 'LMDB/randomx' into randomx 2019-06-26 21:50:51 -03:00
Howard Chu
cfe0e9c7c5
RandomX integration
Support RandomX PoW algorithm
2019-06-01 21:40:55 +01:00
Dusan Klinec
29ffb6bba8
device/trezor: trezor support added 2018-11-02 21:36:39 +01:00
anonimal
8a6c081df7
rapidjson: remove outdated in-tree, use submodule
Includes ~2 years worth of fixes including security and build.

Note: this pulls directly from master, not a release branch/tag. See
https://github.com/Tencent/rapidjson/issues/1265
2018-05-25 04:50:20 +00:00
anonimal
7346a59c75
Build: update miniupnp submodule
f21df05 was never supposed to be merged into the master branch.
fluffypony merged #3670 before #3668 was rebased and resolved.

Note: the cherry-picked commit hashes are now invalid because #3670
was merged before #3668 was rebased with the updated repo location.
2018-04-23 22:27:54 +00:00
anonimal
f21df05c77
Build: add miniupnp submodule
Though we only need miniupnpc, rebasing and maintaining a miniupnpc-only
repo is unrealistic.

(cherry picked from commit 3c40eb768c292a4dec79d7dffd6685fd37940a2a)
2018-04-19 10:55:56 +00:00
anonimal
efe70a15f8
Unbound: add git submodule for unbound 2018-03-18 15:52:27 +00:00