Adds support for building Lokinet as a system extension, and fixes
various problems in the macos implementation found during development of
the system extension support.
Fixes:
- tighten reserved name detection to not match fooloki.loki, but instead
only match "foo.loki.loki" and "loki.loki" (and similar for reserved
name "snode.loki").
- IPv6 PTR parsing was completely broken.
- Added tests for the above two issues.
Cleanups:
- Eliminate llarp::dns::Name_t typedef for std::string
- Use optional return instead of bool + output param
- Use string_views; we were doing a *lot* of string substr's during
parsing, each of which allocates a new string.
- Use fmt instead of stringstream
- Simplify IPv4 PTR parsing
Replaces custom logging system with spdlog-based oxen logging. This
commit mainly replaces the backend logging with the spdlog-based system,
but doesn't (yet) convert all the existing LogWarn, etc. to use the new
format-based logging.
New logging statements will look like:
llarp::log::warning(cat, "blah: {}", val);
where `cat` should be set up in each .cpp or cluster of .cpp files, as
described in the oxen-logging README.
As part of spdlog we get fmt, which gives us nice format strings, where
are applied generously in this commit.
Making types printable now requires two steps:
- add a ToString() method
- add this specialization:
template <>
constexpr inline bool llarp::IsToStringFormattable<llarp::Whatever> = true;
This will then allow the type to be printed as a "{}" value in a
fmt::format string. This is applied to all our printable types here,
and all of the `operator<<` are removed.
This commit also:
- replaces various uses of `operator<<` to ToString()
- replaces various uses of std::stringstream with either fmt::format or
plain std::string
- Rename some to_string and toString() methods to ToString() for
consistency (and to work with fmt)
- Replace `stringify(...)` and `make_exception` usage with fmt::format
(and remove stringify/make_exception from util/str.hpp).
on win32/apple reading packets from the interface does not count as an io operation.
manually trigger pump on win32/apple to pretend that it is an io event.
add platform quark function MaybeWakeUpperLayers on vpn::Interface to manaully wake up the other components on platforms that need that (ones on which packet io is not done via io events).
on non linux platforms, use uv_prepare_t instead of uv_check_t as the former triggers before blocking for io, instead of after. this better matches linux's order of operations in libuv.
- Make the main PumpLL also pump hidden services, rather than using
separate wakers in each TunEndpoint. It seems there is some
interactions that just one or the other is not enough.
- Eliminate TunEndpoint send queue -- it isn't needed as we can just
send directly.
When we enable/disable exit mode on this restarts the unbound DNS
responder with the DNS trampoline (or restores upstream, when disabling)
to properly route DNS requests through the tunnel (because libunbound's
direct requests don't get tunneled because unbound is inside the network
extension).
The reason the dns fix on android didn't work is that the DnsInterceptor
had a reversed to/from argument order for its
`SendServerMessageBufferTo` overload, and so android/mac needed the
to/from to be reversed so that the second reverse cancelled out the
first one.
Upon review, the DnsInterceptor order (to, from) is more intuitive than
the base order (from, to), so this reapplies the dns fix and swaps
everything *except* DnsInterceptor to match the (to, from) argument
order.
This reverts commit dace0224ec.
This reportedly didn't fix things on Android, and most definitely breaks
macOS (with this we get a bunch of errors about expecting inbound when
we have outbound).
* make it so that we don't set up unbound resolver when we have no resolvers provided by config
* clean up dns codepath and make it use llarp::SockAddr instead of llarp::IpAddress
* add option to persist address mappings between restarts using [network]:persist-addrmap-file
* make it work
* only persist address map for inbound convos
* turn persisting address map on by default
* dont load addrmap file if it has been modified last over a minute ago to prevent foot cannons fired from loading a really old version of it
