86c495223f net: add CNode::IsInboundOnion() public getter and unit tests (Jon Atack)
6609eb8cb5 net: assert CNode::m_inbound_onion is inbound in ctor (Jon Atack)
993d1ecd19 test, fuzz: fix constructing CNode with invalid inbound_onion (Jon Atack)
Pull request description:
The goal of this PR is to be able to depend on `m_inbound_onion` in AttemptToEvictConnection in #20197:
- asserts `CNode::m_inbound_onion` is inbound in the CNode ctor to have a validity check at the class boundary
- fixes a unit test and a fuzz utility that were passing invalid inbound onion values to the CNode ctor
- drops an unneeded check in `CNode::ConnectedThroughNetwork()` for its inbound status
- adds a public getter `IsInboundOnion()` that also allows unit testing it
- adds unit test coverage
ACKs for top commit:
sipa:
utACK 86c495223f
LarryRuane:
ACK 86c495223f
vasild:
ACK 86c495223f
MarcoFalke:
review ACK 86c495223f🐍
Tree-SHA512: 21109105bc4e5e03076fadd489204be00eac710c9de0127708ca2d0a10a048ff81f640f589a7429967ac3eb51d35fe24bb2b12e53e7aa3efbc47aaff6396d204
17a5f172fa fuzz: Make addrman fuzzing harness deterministic (practicalswift)
Pull request description:
Make `CAddrMan` fuzzing harness deterministic.
See [`doc/fuzzing.md`](https://github.com/bitcoin/bitcoin/blob/master/doc/fuzzing.md) for information on how to fuzz Bitcoin Core. Don't forget to contribute any coverage increasing inputs you find to the [Bitcoin Core fuzzing corpus repo](https://github.com/bitcoin-core/qa-assets).
Happy fuzzing :)
ACKs for top commit:
Crypt-iQ:
utACK 17a5f172fa
Tree-SHA512: 725f983745233e9b616782247fa18847e483c074ca4336a5beea8a9009128c3a74b4d50a12662d8ca2177c2e1fc5fc121834df6b459ac0af43c931d77ef7c4d8
Before this change `CNetAddr::ip` was a fixed-size array of 16 bytes,
not being able to store larger addresses (e.g. TORv3) and encoded
smaller ones as 16-byte IPv6 addresses.
Change its type to `prevector`, so that it can hold larger addresses and
do not disguise non-IPv6 addresses as IPv6. So the IPv4 address
`1.2.3.4` is now encoded as `01020304` instead of
`00000000000000000000FFFF01020304`.
Rename `CNetAddr::ip` to `CNetAddr::m_addr` because it is not an "IP" or
"IP address" (TOR addresses are not IP addresses).
In order to preserve backward compatibility with serialization (where
e.g. `1.2.3.4` is serialized as `00000000000000000000FFFF01020304`)
introduce `CNetAddr` dedicated legacy serialize/unserialize methods.
Adjust `CSubNet` accordingly. Still use `CSubNet::netmask[]` of fixed 16
bytes, but use the first 4 for IPv4 (not the last 4). Only allow
subnetting for IPv4 and IPv6.
Co-authored-by: Carl Dong <contact@carldong.me>
