Implement the upload path so a peer can download our shared files:
- fix the mis-coded PlaceInQueueResponse (43 -> 44) and add a real QueueUpload
handler (code 43) -> PeerMessage::IncomingQueueUpload;
- the peer actor forwards it as ClientOperation::QueueUpload; the client looks
the file up in its shares, mints an upload token (high half of the token
space, disjoint from md5 download tokens), and offers it via ServeUpload ->
build_upload_transfer_request (peer code 40, direction=upload);
- a TransferResponse for one of our serving tokens is handled by a surgical
early-return that emits StartUpload, leaving the download path untouched;
- StartUpload resolves the downloader's address (GetPeerAddress, cached) and
streams the file via a new peer::upload_peer::serve_file over an F connection.
Tested: build_upload_transfer_request decodes via the production Transfer
parser; serve_file streams a file correctly over a loopback F connection.
GetPeerAddressResponse narrowed obfuscated_port (u16) into a u8 via
try_into().unwrap(), panicking for any real obfuscated port (>255) and
unwinding the client's single ops-loop thread — hanging all downloads,
searches and peer events. Since download() now auto-resolves peer addresses
via GetPeerAddress, a download to any obfuscation-enabled peer could crash the
whole client. Widen Peer::obfuscated_port to u16 and stop truncating.
Enable the full clippy all + pedantic + nursery groups as workspace warnings,
with a small documented allow-list for the pedantic/nursery lints this project
intentionally does not follow (rustdoc-style requirements, deliberate numeric
casts in the protocol/UI layers, and a few noisy nursery lints). Also enable
the rust unused_lifetimes and unsafe_op_in_unsafe_fn lints.
Fixed every resulting warning (527 -> 0) mechanically per clippy's suggestions:
inline format args, const fns, item ordering, let-else, redundant clones,
map_or, cast_lossless, Eq derives, associated-fn conversions for methods that
never used self, and removing unnecessary Result wrappers whose call sites could
never propagate an error. No runtime behavior changed; cargo fmt applied.
cargo clippy --workspace --all-targets: 0 warnings. All tests pass.
Peer::new_from_message, NewPeer::new_from_message and the listener's
parse_peer_init_message parsed an untrusted connection-type string with
.parse().unwrap(), panicking on anything other than P/F/D. Reachable from:
- a malicious server via ConnectToPeer (kills a thread-pool worker), and
- any peer connecting to our listener (kills the accept loop).
new_from_message now returns Option and callers drop malformed messages;
the listener rejects the connection. Added a regression test for truncated
TransferRequest parsing, now safe via the bounds-checked readers.
- Add pub const BYTES_PER_MB to ui/utils.rs and replace 7 uses of the
bare 1_048_576.0 literal across the UI modules. Also pick up
uninlined-format-args cleanup in the same file while we're here.
- Replace Vec<i32> IP-byte accumulator in Peer::new_from_message with a
[u8; 4]; the .abs() calls on u8.into() were no-ops on always-positive
values. Network byte order ([3].[2].[1].[0]) preserved; tests cover
the wire format.
michel