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v2fly/proxy/blackhole/config.go
2021-09-04 11:13:28 +01:00

49 lines
1.1 KiB
Go

package blackhole
import (
"github.com/v2fly/v2ray-core/v4/common"
"github.com/v2fly/v2ray-core/v4/common/buf"
"github.com/v2fly/v2ray-core/v4/common/serial"
)
const (
http403response = `HTTP/1.1 403 Forbidden
Connection: close
Cache-Control: max-age=3600, public
Content-Length: 0
`
)
// ResponseConfig is the configuration for blackhole responses.
type ResponseConfig interface {
// WriteTo writes predefined response to the give buffer.
WriteTo(buf.Writer) int32
}
// WriteTo implements ResponseConfig.WriteTo().
func (*NoneResponse) WriteTo(buf.Writer) int32 { return 0 }
// WriteTo implements ResponseConfig.WriteTo().
func (*HTTPResponse) WriteTo(writer buf.Writer) int32 {
b := buf.New()
common.Must2(b.WriteString(http403response))
n := b.Len()
writer.WriteMultiBuffer(buf.MultiBuffer{b})
return n
}
// GetInternalResponse converts response settings from proto to internal data structure.
func (c *Config) GetInternalResponse() (ResponseConfig, error) {
if c.GetResponse() == nil {
return new(NoneResponse), nil
}
config, err := serial.GetInstanceOf(c.GetResponse())
if err != nil {
return nil, err
}
return config.(ResponseConfig), nil
}