70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
/*
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Copyright 2024 Josh Deprez
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package zip
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import (
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"bytes"
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"fmt"
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)
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type Function uint8
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const (
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// ZIP packets
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FunctionQuery = 1
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FunctionReply = 2
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FunctionGetNetInfo = 5
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FunctionGetNetInfoReply = 6
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FunctionNotify = 7
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FunctionExtendedReply = 8
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// ATP packets
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FunctionGetMyZone = 7
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FunctionGetZoneList = 8
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FunctionGetLocalZones = 9
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)
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// Non-ATP packets only
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func UnmarshalPacket(data []byte) (any, error) {
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if len(data) < 1 {
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return nil, fmt.Errorf("insufficient input length %d for any ZIP packet", len(data))
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}
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switch data[0] {
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case FunctionQuery:
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return UnmarshalQueryPacket(data)
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case FunctionReply, FunctionExtendedReply:
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return UnmarshalReplyPacket(data)
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case FunctionGetNetInfo:
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return UnmarshalGetNetInfoPacket(data)
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case FunctionGetNetInfoReply:
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return nil, fmt.Errorf("ZIP GetNetInfo Reply unmarshaling unimplemented")
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case FunctionNotify:
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return nil, fmt.Errorf("ZIP Notify unmarshaling unimplemented")
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default:
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return nil, fmt.Errorf("unknown ZIP function %d", data[0])
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}
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}
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func write16[I ~uint16](b *bytes.Buffer, n I) {
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b.Write([]byte{byte(n >> 8), byte(n & 0xff)})
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}
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