42 lines
998 B
Go
42 lines
998 B
Go
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package socks5
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import (
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"golang.org/x/net/context"
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)
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// RuleSet is used to provide custom rules to allow or prohibit actions
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type RuleSet interface {
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Allow(ctx context.Context, req *Request) (context.Context, bool)
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}
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// PermitAll returns a RuleSet which allows all types of connections
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func PermitAll() RuleSet {
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return &PermitCommand{true, true, true}
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}
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// PermitNone returns a RuleSet which disallows all types of connections
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func PermitNone() RuleSet {
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return &PermitCommand{false, false, false}
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}
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// PermitCommand is an implementation of the RuleSet which
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// enables filtering supported commands
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type PermitCommand struct {
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EnableConnect bool
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EnableBind bool
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EnableAssociate bool
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}
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func (p *PermitCommand) Allow(ctx context.Context, req *Request) (context.Context, bool) {
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switch req.Command {
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case ConnectCommand:
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return ctx, p.EnableConnect
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case BindCommand:
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return ctx, p.EnableBind
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case AssociateCommand:
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return ctx, p.EnableAssociate
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}
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return ctx, false
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}
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