44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package sing
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import (
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"context"
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"golang.org/x/exp/slices"
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"github.com/Dreamacro/clash/adapter/inbound"
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"github.com/sagernet/sing/common/auth"
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)
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type contextKey string
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var ctxKeyAdditions = contextKey("Additions")
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func WithAdditions(ctx context.Context, additions ...inbound.Addition) context.Context {
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return context.WithValue(ctx, ctxKeyAdditions, additions)
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}
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func getAdditions(ctx context.Context) []inbound.Addition {
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if v := ctx.Value(ctxKeyAdditions); v != nil {
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if a, ok := v.([]inbound.Addition); ok {
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return a
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}
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}
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return nil
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}
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func combineAdditions(ctx context.Context, additions []inbound.Addition) []inbound.Addition {
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additionsCloned := false
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if ctxAdditions := getAdditions(ctx); len(ctxAdditions) > 0 {
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additions = slices.Clone(additions)
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additionsCloned = true
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additions = append(additions, ctxAdditions...)
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}
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if user, ok := auth.UserFromContext[string](ctx); ok {
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if !additionsCloned {
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additions = slices.Clone(additions)
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additionsCloned = true
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}
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additions = append(additions, inbound.WithInUser(user))
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}
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return additions
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}
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