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[MP] Fix auth not waiting for confirmation in some cases 

The auth implementation was treating any received packet as a remote
confirmation after the peer was confirmed locally.

It now correctly awaits for the remote confirmation packet before
admitting new peers.

(cherry picked from commit 754036f82f)
This commit is contained in:
Fabio Alessandrelli 2023-12-17 13:19:07 +01:00 committed by Rémi Verschelde
parent f14e43b68f
commit 966e1a3d71
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GPG Key ID: C3336907360768E1
1 changed files with 20 additions and 26 deletions
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46
modules/multiplayer/scene_multiplayer.cpp
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@ -96,35 +96,29 @@ Error SceneMultiplayer::poll() {
#endif
if (pending_peers.has(sender)) {
if (pending_peers[sender].local) {
// If the auth is over, admit the peer at the first packet.
pending_peers.erase(sender);
_admit_peer(sender);
ERR_CONTINUE(len < 2 || (packet[0] & CMD_MASK) != NETWORK_COMMAND_SYS || packet[1] != SYS_COMMAND_AUTH);
// Auth message.
PackedByteArray pba;
pba.resize(len - 2);
if (pba.size()) {
memcpy(pba.ptrw(), &packet[2], len - 2);
// User callback
const Variant sv = sender;
const Variant pbav = pba;
const Variant *argv[2] = { &sv, &pbav };
Variant ret;
Callable::CallError ce;
auth_callback.callp(argv, 2, ret, ce);
ERR_CONTINUE_MSG(ce.error != Callable::CallError::CALL_OK, "Failed to call authentication callback");
} else {
ERR_CONTINUE(len < 2 || (packet[0] & CMD_MASK) != NETWORK_COMMAND_SYS || packet[1] != SYS_COMMAND_AUTH);
// Auth message.
PackedByteArray pba;
pba.resize(len - 2);
if (pba.size()) {
memcpy(pba.ptrw(), &packet[2], len - 2);
// User callback
const Variant sv = sender;
const Variant pbav = pba;
const Variant *argv[2] = { &sv, &pbav };
Variant ret;
Callable::CallError ce;
auth_callback.callp(argv, 2, ret, ce);
ERR_CONTINUE_MSG(ce.error != Callable::CallError::CALL_OK, "Failed to call authentication callback");
} else {
// Remote complete notification.
pending_peers[sender].remote = true;
if (pending_peers[sender].local) {
pending_peers.erase(sender);
_admit_peer(sender);
}
// Remote complete notification.
pending_peers[sender].remote = true;
if (pending_peers[sender].local) {
pending_peers.erase(sender);
_admit_peer(sender);
}
continue; // Auth in progress.
}
continue; // Auth in progress.
}
ERR_CONTINUE(!connected_peers.has(sender));