mirror of
https://github.com/renorris/openfsd
synced 2026-03-22 23:05:36 +08:00
41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
package protocol
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import (
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"fmt"
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"strings"
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)
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type ServerIdentificationPDU struct {
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From string `validate:"required,alphanum,max=7"`
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To string `validate:"required,alphanum,max=7"`
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Version string `validate:"required,max=32"`
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InitialChallenge string `validate:"required,hexadecimal,max=32"`
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}
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func (p *ServerIdentificationPDU) Serialize() string {
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return fmt.Sprintf("$DI%s:%s:%s:%s%s", p.From, p.To, p.Version, p.InitialChallenge, PacketDelimeter)
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}
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func ParseServerIdentificationPDU(rawPacket string) (*ServerIdentificationPDU, error) {
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rawPacket = strings.TrimSuffix(rawPacket, PacketDelimeter)
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rawPacket = strings.TrimPrefix(rawPacket, "$DI")
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fields := strings.Split(rawPacket, Delimeter)
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if len(fields) != 4 {
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return nil, NewGenericFSDError(SyntaxError)
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}
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pdu := &ServerIdentificationPDU{
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From: fields[0],
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To: fields[1],
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Version: fields[2],
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InitialChallenge: fields[3],
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}
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err := V.Struct(pdu)
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if err != nil {
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return nil, NewGenericFSDError(SyntaxError)
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}
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return pdu, nil
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}
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