39 lines
1.1 KiB
Go
39 lines
1.1 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 atalk
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import (
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"fmt"
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"time"
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"github.com/google/gopacket/pcap"
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)
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// StartPcap opens an AppleTalk and AARP listening session on a network device.
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func StartPcap(device string) (*pcap.Handle, error) {
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handle, err := pcap.OpenLive(device, 4096, true, 100*time.Millisecond)
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if err != nil {
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return nil, fmt.Errorf("opening device %q: %w", device, err)
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}
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if err := handle.SetBPFFilter("atalk or aarp"); err != nil {
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handle.Close()
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return nil, fmt.Errorf("setting BPF filter: %w", err)
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}
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return handle, nil
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}
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