c73b59d47f fuzz: implement targets for PCP and NAT-PMP port mapping requests (Antoine Poinsot)
1695c8ab5b fuzz: in FuzzedSock::GetSockName(), return a random-length name (Antoine Poinsot)
0d472c1953 fuzz: never return an uninitialized sockaddr in FuzzedSock::GetSockName (Antoine Poinsot)
39b7e2b590 fuzz: add steady clock mocking to FuzzedSock (Antoine Poinsot)
6fe1c35c05 pcp: make NAT-PMP error codes uint16_t (Antoine Poinsot)
01906ce912 pcp: make the ToString method const (Antoine Poinsot)
Pull request description:
Based on https://github.com/bitcoin/bitcoin/pull/31022, this introduces a fuzz target for `PCPRequestPortMap` and `NATPMPRequestPortMap`.
Like in #31022 we set `CreateSock` to return a `Sock` which mocks the responses from the server and uses a mocked steady clock for the `Wait`s. Except here we simply respond with fuzzer-provided data until the client stop sending requests. We also sometimes inject errors and connection failures based on fuzzer-provided data.
We reuse the existing `FuzzedSock`, so a preparatory commit is included that adds steady clock mocking to it. This may be useful for other harnesses as well.
ACKs for top commit:
laanwj:
re-ACK c73b59d47f
marcofleon:
ACK c73b59d47f
dergoegge:
utACK c73b59d47f
Tree-SHA512: 24cd4d958a0999946a0c3d164a242fc3f0a0b66770630252b881423ad0065d29fdaab765014d193b705d3eff397f201d51a88a3ca80c63fd3867745e6f21bb2b
44bd315924