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The Offer struct models a long-lived, reusable BOLT 12 payment template. It defines TLV fields as optional records and exposes Encode/DecodeOffer for round-trip serialization. The struct implements lnwire.PureTLVMessage; AllRecords filters the decoded TypeMap through bolt12InUnsignedRange to derive any signed-range extras the encoder must re-emit, keeping offer_id and the Merkle root stable across encoders that understand a wider set of even/odd extensions.
29 lines
669 B
Go
29 lines
669 B
Go
package bolt12
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import (
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"bytes"
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"fmt"
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"github.com/lightningnetwork/lnd/tlv"
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)
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// decodeStream runs a single typed-stream pass over data and returns the
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// canonical TypeMap. Records may be passed in any order; NewStream requires
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// them sorted, so SortRecords runs first.
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func decodeStream(data []byte, records ...tlv.Record) (tlv.TypeMap, error) {
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tlv.SortRecords(records)
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stream, err := tlv.NewStream(records...)
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if err != nil {
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return nil, fmt.Errorf("create stream: %w", err)
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}
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typeMap, err := stream.DecodeWithParsedTypesP2P(
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bytes.NewReader(data),
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)
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if err != nil {
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return nil, fmt.Errorf("decode stream: %w", err)
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}
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return typeMap, nil
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}
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