mirror of
https://git.sr.ht/~sircmpwn/aerc
synced 2024-11-24 00:52:29 +01:00
35 lines
767 B
Go
35 lines
767 B
Go
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package lib
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// TODO: Remove this pending merge into github.com/emersion/go-message
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"math/rand"
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"os"
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"time"
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"github.com/martinlindhe/base36"
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)
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// Generates an RFC 2822-complaint Message-Id based on the informational draft
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// "Recommendations for generating Message IDs", for lack of a better
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// authoritative source.
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func GenerateMessageId() string {
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var (
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now bytes.Buffer
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nonce bytes.Buffer
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)
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binary.Write(&now, binary.BigEndian, time.Now().UnixNano())
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binary.Write(&nonce, binary.BigEndian, rand.Uint64())
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hostname, err := os.Hostname()
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if err != nil {
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hostname = "localhost"
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}
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return fmt.Sprintf("<%s.%s@%s>",
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base36.EncodeBytes(now.Bytes()),
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base36.EncodeBytes(nonce.Bytes()),
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hostname)
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}
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