Commit Graph

25 Commits

Author SHA1 Message Date
Jeff Becker
beb07bf46f
small optimizations and fixes
- Ensure ip header struct is packed
- Use fmt
- add missing header
2022-09-19 20:26:28 -03:00
Jason Rhinelander
f168b7cf72
llarp_buffer_t: rename badly named operator==
It didn't do equality, it did "does the remaining space start with the
argument" (and so the replacement in the previous commit was broken).

This renames it to avoid the confusion and restores to what it was doing
on dev.
2022-09-19 20:25:51 -03:00
Jason Rhinelander
15443568db
Apply some lipstick to llarp_buffer_t
This class is cursed, but also broken under gcc-12.  Apply some lipstick
to get it moving again (but we really need to refactor this because it
is a mess).
2022-09-19 20:25:51 -03:00
Jeff
871c3e3281
changeset for windows port
* wintun vpn platform for windows
* bundle config snippets into nsis installer for exit node, keyfile persisting, reduced hops mode.
* use wintun for vpn platform
* isolate all windows platform specific code into their own compilation units and libraries
* split up internal libraries into more specific components
* rename liblokinet.a target to liblokinet-amalgum.a to elimiate ambiguity with liblokinet.so
* DNS platform for win32
* rename llarp/ev/ev_libuv.{c,h}pp to llarp/ev/libuv.{c,h}pp as the old name was idiotic
* split up net platform into win32 and posix specific compilation units
* rename lokinet_init.c to easter_eggs.cpp as that is what they are for and it does not need to be a c compilation target
* add cmake option STRIP_SYMBOLS for seperating out debug symbols for windows builds
* intercept dns traffic on all interfaces on windows using windivert and feed it into lokinet
2022-09-08 14:24:59 -04:00
Jeff
74362149eb
refactor dns subsystem
we want to be able to have multiple locally bound dns sockets in lokinet so
i restructured most of the dns subsystem in order to make this easier.

specifically, we have a new structure to dns subsystem:

* dns::QueryJob_Base

base type for holding a dns query and response with virtual methods
in charge of sending a reply to whoever requested.

* dns::PacketSource_Base

base type for reading and writing dns messages to and from wherever they came from

* dns::Resolver_Base

base type for filtering and handling of dns messages asynchronously.

* dns::Server

contextualized per endpoint dns object, responsible for all dns related isms.

this change hides all impelementation details of all of the dns components.
adds some more helper functions for parsing dns and dealing with OwnedBuffer.

overall dns becomes less of a pain with this new structure. probably.
2022-09-08 14:23:52 -04:00
Jeff Becker
bf2488d9e8
zero copy compare 2022-09-08 11:22:36 -04:00
Jason Rhinelander
b09298e211
Replace llarp/util/endian.hpp with oxenc/endian.h 2022-04-28 12:09:51 -03:00
Jeff Becker
1ea77e6a68
more client to snode quic fixes 2021-04-19 07:02:44 -04:00
Thomas Winget
7caa87862e standardize include format and pragma once
All #ifndef guards on headers have been removed, I think,
in favor of #pragma once

Headers are now included as `#include "filename"` if the included file
resides in the same directory as the file including it, or any
subdirectory therein.  Otherwise they are included as
`#include <project/top/dir/relative/path/filename>`

The above does not include system/os headers.
2021-03-09 19:01:41 -05:00
Jeff Becker
7af4807302 correctly set size of OwnedBuffer when using OwnedBuffer::copy_used 2021-03-07 12:16:15 -04:00
Jason Rhinelander
5b555ee5aa Replace libuv with uvw & related refactoring
- removes all the llarp_ev_* functions, replacing with methods/classes/functions in the llarp
  namespace.
- banish ev/ev.h to the void
- Passes various things by const lvalue ref, especially shared_ptr's that don't need to be copied
  (to avoid an atomic refcount increment/decrement).
- Add a llarp::UDPHandle abstract class for UDP handling
- Removes the UDP tick handler; code that needs tick can just do a separate handler on the event
  loop outside the UDP socket.
- Adds an "OwnedBuffer" which owns its own memory but is implicitly convertible to a llarp_buffer_t.
  This is mostly needed to take over ownership of buffers from uvw without copying them as,
  currently, uvw does its own allocation (pending some open upstream issues/PRs).
- Logic:
  - add `make_caller`/`call_forever`/`call_every` utility functions to abstract Call wrapping and
    dependent timed tasks.
  - Add inLogicThread() so that code can tell its inside the logic thread (typically for
    debugging assertions).
  - get rid of janky integer returns and dealing with cancellations on call_later: the other methods
    added here and the event loop code remove the need for them.
- Event loop:
  - redo everything with uvw instead of libuv
  - rename EventLoopWakeup::Wakeup to EventLoopWakeup::Trigger to better reflect what it does.
  - add EventLoopRepeater for repeated events, and replace the code that reschedules itself every
    time it is called with a repeater.
  - Split up `EventLoop::run()` into a non-virtual base method and abstract `run_loop()` methods;
    the base method does a couple extra setup/teardown things that don't need to be in the derived class.
  - udp_listen is replaced with ev->udp(...) which returns a new UDPHandle object rather that
    needing gross C-style-but-not-actually-C-compatible structs.
  - Remove unused register_poll_fd_(un)readable
  - Use shared_ptr for EventLoopWakeup rather than returning a raw pointer; uvw lets us not have to
    worry about having the event loop class maintain ownership of it.
  - Add factory EventLoop::create() function to create a default (uvw-based) event loop (previously
    this was one of the llarp_ev_blahblah unnamespaced functions).
  - ev_libuv: this is mostly rewritten; all of the glue code/structs, in particular, are gone as
    they are no longer needed with uvw.
- DNS:
  - Rename DnsHandler to DnsInterceptor to better describe what it does (this is the code that
    intercepts all DNS to the tun IP range for Android).
- endpoint:
  - remove unused "isolated network" code
  - remove distinct (but actually always the same) variables for router/endpoint logic objects
- llarp_buffer_t
  - make constructors type-safe against being called with points to non-size-1 values
- tun packet reading:
  - read all available packets off the device/file descriptor; previously we were reading one packet
    at a time then returning to the event loop to poll again.
  - ReadNextPacket() now returns a 0-size packet if the read would block (so that we can implement
    the previous point).
  - ReadNextPacket() now throws on I/O error
- Miscellaneous code cleanups/simplifications
2021-03-04 16:51:18 -04:00
Jason Rhinelander
8b00eacabf Fix signed/unsigned char comparison bug
These functions would not working properly if given a high bit char
value.
2021-03-04 16:51:18 -04:00
Stephen Shelton
273270916e
The Great Wall of Blame
This commit reflects changes to clang-format rules. Unfortunately,
these rule changes create a massive change to the codebase, which
causes an apparent rewrite of git history.

Git blame's --ignore-rev flag can be used to ignore this commit when
attempting to `git blame` some code.
2020-04-07 12:38:56 -06:00
Michael
16cdfbd5f0
clang-tidy modernize pass 2019-08-12 16:52:58 +01:00
Michael
488695047f
Remove redundant else blocks 2019-07-09 22:54:46 +01:00
Michael
9ee525a006
Fix shadowing warnings 2019-04-26 00:21:19 +01:00
Michael
4143472a17
Add cmake module to target a library as 'system', and fix a few warnings 2019-04-25 00:27:31 +01:00
michael-loki
0195152e05 Allow builds on MSVC (#518)
* Import cxxopts to replace getopts usage

* Add visual studio build things

* Fixup abseil build parts

* Replace __attribute__((unused)) with ABSL_ATTRIBUTE_UNUSED

* Fixup minor windows build issues

* Replace getopts usage

* Temporarily fixup .rc files

* More minor windows fixes

* Get a working build

* Revert .rc files

* Revert changes to nodedb
2019-04-19 13:24:33 -05:00
Jeff Becker
eceb55623c
more 2019-03-07 10:17:29 -05:00
Michael
a00d6afc5e
Convert llarp_buffer_t to be a class with methods 2019-02-17 13:09:48 +00:00
Michael
7ca3e13e78
Rename to ManagedBuffer 2019-02-03 00:48:10 +00:00
Michael
f3b0af9d2f
Create CopyableBuffer type 2019-02-02 23:21:35 +00:00
Michael
2de621b0ad
Disable copy constructing llarp_buffer_t 2019-02-01 01:58:13 +00:00
Ryan Tharp
c7e126a426 fix buffer overrun 2019-01-30 23:53:43 -08:00
Michael
e5eda0fb8f
Move lokinet unspecific components to a util/ library 2019-01-10 20:07:24 +00:00