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fix(multiplayer): enforce assignment opaque ids

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This commit is contained in:
Josh Creek
2026-09-01 22:40:43 +01:00
parent dac414274e
commit 2bdf876b47
5 changed files with 23 additions and 5 deletions
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Game/tests/cases/test_assignment_state.gd
+8 -2
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@@ -5,7 +5,7 @@ const AssignmentState = preload("res://scripts/assignment_state.gd")
func test_assignment_projection_accepts_verified_enet_manifest() -> void:
var assignment := AssignmentState.new()
assert_true(assignment.apply({"match_id": "match-1", "server_id": "server-1", "player_id": "player-1", "slot": 2, "expires_at": "2099-08-31T12:00:00Z", "protocol_version": 1, "transport": "enet", "endpoint": "127.0.0.1:30001", "join_authorisation": "signed"}, "player-1"), "valid assignment applies")
assert_true(assignment.apply({"match_id": "match_1234567890", "server_id": "server_123456789", "player_id": "player_123456789", "slot": 2, "expires_at": "2099-08-31T12:00:00Z", "protocol_version": 1, "transport": "enet", "endpoint": "127.0.0.1:30001", "join_authorisation": "signed"}, "player_123456789"), "valid assignment applies")
assert_true(assignment.available, "assignment becomes available only after validation")
assert_eq(assignment.transport, "enet", "transport is explicit")
assert_eq(assignment.slot, 2, "slot is preserved")
@@ -14,7 +14,13 @@ func test_assignment_projection_accepts_verified_enet_manifest() -> void:
func test_assignment_projection_rejects_wrong_shape_or_unsafe_transport() -> void:
var assignment := AssignmentState.new()
assert_true(not assignment.apply({"match_id": "match-1", "server_id": "server-1", "player_id": "player-1", "slot": 6, "expires_at": "future", "protocol_version": 1, "transport": "enet", "join_authorisation": "signed"}), "out-of-range slot is rejected")
var valid := {"match_id": "match_1234567890", "server_id": "server_123456789", "player_id": "player_123456789", "slot": 0, "expires_at": "2099-08-31T12:00:00Z", "protocol_version": 1, "transport": "enet", "endpoint": "127.0.0.1:30001", "join_authorisation": "signed"}
var out_of_range := valid.duplicate()
out_of_range["slot"] = 6
assert_true(not assignment.apply(out_of_range), "out-of-range slot is rejected")
var short_id := valid.duplicate()
short_id["match_id"] = "match-1"
assert_true(not assignment.apply(short_id), "short opaque assignment id is rejected")
assert_true(not assignment.available, "invalid assignment is not exposed")
assert_true(not assignment.apply({"match_id": "match-1", "server_id": "server-1", "player_id": "player-1", "slot": 0, "expires_at": "future", "protocol_version": 1, "transport": "udp", "join_authorisation": "signed"}), "unknown transport is rejected")
assert_true(not assignment.apply({"match_id": "match-1", "server_id": "server-1", "player_id": "player-1", "slot": 0, "expires_at": "future", "protocol_version": 1, "transport": "steam_sdr", "join_authorisation": ""}), "empty authorisation is rejected")