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fix: bind reconnects to verified Steam identity

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This commit is contained in:
Josh Creek
2026-08-31 20:54:16 +01:00
parent 893db17c03
commit 518df3a73a
3 changed files with 26 additions and 5 deletions
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server/domain/reconnect.go
+10 -3
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@@ -29,6 +29,7 @@ type JoinAuthorisation struct {
MatchID string
ServerID string
PlayerID string
SteamID string
Slot int
Team int
Protocol string
@@ -40,6 +41,7 @@ type rankedConnection struct {
PlayerID string
Slot int
Team int
SteamID string
Generation uint64
ConnectedAt time.Time
LostAt time.Time
@@ -65,13 +67,18 @@ func NewRankedConnections(matchID, serverID, protocol string, players []JoinAuth
if _, exists := r.players[auth.PlayerID]; exists {
return nil, fmt.Errorf("%w: duplicate player", ErrJoinAuthorisation)
}
r.players[auth.PlayerID] = rankedConnection{PlayerID: auth.PlayerID, Slot: auth.Slot, Team: auth.Team, Generation: 1}
for _, existing := range r.players {
if existing.Slot == auth.Slot {
return nil, fmt.Errorf("%w: duplicate slot", ErrJoinAuthorisation)
}
}
r.players[auth.PlayerID] = rankedConnection{PlayerID: auth.PlayerID, SteamID: auth.SteamID, Slot: auth.Slot, Team: auth.Team, Generation: 1}
}
return r, nil
}
func (r *RankedConnections) validate(auth JoinAuthorisation, now time.Time) error {
if auth.MatchID != r.MatchID || auth.ServerID != r.ServerID || auth.Protocol != r.Protocol || auth.PlayerID == "" || auth.Slot < 0 || auth.Team < 0 || auth.ExpiresAt.IsZero() {
if auth.MatchID != r.MatchID || auth.ServerID != r.ServerID || auth.Protocol != r.Protocol || auth.PlayerID == "" || auth.SteamID == "" || auth.Slot < 0 || auth.Team < 0 || auth.ExpiresAt.IsZero() {
return ErrJoinAuthorisation
}
if !now.IsZero() && !now.Before(auth.ExpiresAt) {
@@ -88,7 +95,7 @@ func (r *RankedConnections) Admit(auth JoinAuthorisation, now time.Time) (uint64
return 0, err
}
player, ok := r.players[auth.PlayerID]
if !ok || player.Slot != auth.Slot || player.Team != auth.Team {
if !ok || player.SteamID != auth.SteamID || player.Slot != auth.Slot || player.Team != auth.Team {
return 0, ErrJoinAuthorisation
}
// Generation in the authorisation identifies the backend-issued assignment