16466354971

Committed 23 Jul 2025 09:05AM UTC coverage: 57.54% (-9.7%) from 67.201%

Build # 16466354971

Build Type

Pull #9455

github

Committed by

web-flow

Commit Message

Merge f914ae23c into 90e211684

Pull Request Pull Request #9455: discovery+lnwire: add support for DNS host name in NodeAnnouncement msg

Run Details

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0.0

/lnwire/dyn_propose.go

package lnwire

import (
        "bytes"
        "io"

        "github.com/btcsuite/btcd/btcutil"
        "github.com/lightningnetwork/lnd/tlv"
)

// DynPropose is a message that is sent during a dynamic commitments negotiation
// process. It is sent by both parties to propose new channel parameters.
type DynPropose struct {
        // ChanID identifies the channel whose parameters we are trying to
        // re-negotiate.
        ChanID ChannelID

        // DustLimit, if not nil, proposes a change to the dust_limit_satoshis
        // for the sender's commitment transaction.
        DustLimit tlv.OptionalRecordT[
                tlv.TlvType0, tlv.BigSizeT[btcutil.Amount],
        ]

        // MaxValueInFlight, if not nil, proposes a change to the
        // max_htlc_value_in_flight_msat limit of the sender.
        MaxValueInFlight tlv.OptionalRecordT[tlv.TlvType2, MilliSatoshi]

        // HtlcMinimum, if not nil, proposes a change to the htlc_minimum_msat
        // floor of the sender.
        HtlcMinimum tlv.OptionalRecordT[tlv.TlvType4, MilliSatoshi]

        // ChannelReserve, if not nil, proposes a change to the
        // channel_reserve_satoshis requirement of the recipient.
        ChannelReserve tlv.OptionalRecordT[
                tlv.TlvType6, tlv.BigSizeT[btcutil.Amount],
        ]

        // CsvDelay, if not nil, proposes a change to the to_self_delay
        // requirement of the recipient.
        CsvDelay tlv.OptionalRecordT[tlv.TlvType8, uint16]

        // MaxAcceptedHTLCs, if not nil, proposes a change to the
        // max_accepted_htlcs limit of the sender.
        MaxAcceptedHTLCs tlv.OptionalRecordT[tlv.TlvType10, uint16]

        // ChannelType, if not nil, proposes a change to the channel_type
        // parameter.
        ChannelType tlv.OptionalRecordT[tlv.TlvType12, ChannelType]

        // ExtraData is the set of data that was appended to this message to
        // fill out the full maximum transport message size. These fields can
        // be used to specify optional data such as custom TLV fields.
        //
        // NOTE: Since the fields in this structure are part of the TLV stream,
        // ExtraData will contain all TLV records _except_ the ones that are
        // present in earlier parts of this structure.
        ExtraData ExtraOpaqueData
}

// A compile time check to ensure DynPropose implements the lnwire.Message
// interface.
var _ Message = (*DynPropose)(nil)

// A compile time check to ensure DynPropose implements the
// lnwire.SizeableMessage interface.
var _ SizeableMessage = (*DynPropose)(nil)

// Encode serializes the target DynPropose into the passed io.Writer.
// Serialization will observe the rules defined by the passed protocol version.
//
// This is a part of the lnwire.Message interface.
func (dp *DynPropose) Encode(w *bytes.Buffer, _ uint32) error {
        if err := WriteChannelID(w, dp.ChanID); err != nil {
                return err
        }

        // Create extra data records.
        producers, err := dp.ExtraData.RecordProducers()
        if err != nil {
                return err
        }

        // Append the known records.
        producers = append(producers, dynProposeRecords(dp)...)

        // Encode all records.
        var tlvData ExtraOpaqueData
        err = tlvData.PackRecords(producers...)
        if err != nil {
                return err
        }

        return WriteBytes(w, tlvData)
}

// Decode deserializes the serialized DynPropose stored in the passed io.Reader
// into the target DynPropose using the deserialization rules defined by the
// passed protocol version.
//
// This is a part of the lnwire.Message interface.
func (dp *DynPropose) Decode(r io.Reader, _ uint32) error {
        // Parse out the only required field.
        if err := ReadElements(r, &dp.ChanID); err != nil {
                return err
        }

        // Parse out TLV stream.
        var tlvRecords ExtraOpaqueData
        if err := ReadElements(r, &tlvRecords); err != nil {
                return err
        }

        // Prepare receiving buffers to be filled by TLV extraction.
        var dustLimit tlv.RecordT[tlv.TlvType0, tlv.BigSizeT[btcutil.Amount]]
        var maxValue tlv.RecordT[tlv.TlvType2, MilliSatoshi]
        var htlcMin tlv.RecordT[tlv.TlvType4, MilliSatoshi]
        var reserve tlv.RecordT[tlv.TlvType6, tlv.BigSizeT[btcutil.Amount]]
        csvDelay := dp.CsvDelay.Zero()
        maxHtlcs := dp.MaxAcceptedHTLCs.Zero()
        chanType := dp.ChannelType.Zero()

        knownRecords, extraData, err := ParseAndExtractExtraData(
                tlvRecords, &dustLimit, &maxValue, &htlcMin, &reserve,
                &csvDelay, &maxHtlcs, &chanType,
        )
        if err != nil {
                return err
        }

        // Check the results of the TLV Stream decoding and appropriately set
        // message fields.
        if _, ok := knownRecords[dp.DustLimit.TlvType()]; ok {
                dp.DustLimit = tlv.SomeRecordT(dustLimit)
        }

        if _, ok := knownRecords[dp.MaxValueInFlight.TlvType()]; ok {
                dp.MaxValueInFlight = tlv.SomeRecordT(maxValue)
        }

        if _, ok := knownRecords[dp.HtlcMinimum.TlvType()]; ok {
                dp.HtlcMinimum = tlv.SomeRecordT(htlcMin)
        }

        if _, ok := knownRecords[dp.ChannelReserve.TlvType()]; ok {
                dp.ChannelReserve = tlv.SomeRecordT(reserve)
        }

        if _, ok := knownRecords[dp.CsvDelay.TlvType()]; ok {
                dp.CsvDelay = tlv.SomeRecordT(csvDelay)
        }

        if _, ok := knownRecords[dp.MaxAcceptedHTLCs.TlvType()]; ok {
                dp.MaxAcceptedHTLCs = tlv.SomeRecordT(maxHtlcs)
        }

        if _, ok := knownRecords[dp.ChannelType.TlvType()]; ok {
                dp.ChannelType = tlv.SomeRecordT(chanType)
        }

        dp.ExtraData = extraData

        return nil
}

// MsgType returns the MessageType code which uniquely identifies this message
// as a DynPropose on the wire.
//
// This is part of the lnwire.Message interface.
func (dp *DynPropose) MsgType() MessageType {
        return MsgDynPropose
}

// SerializedSize returns the serialized size of the message in bytes.
//
// This is part of the lnwire.SizeableMessage interface.
func (dp *DynPropose) SerializedSize() (uint32, error) {
        return MessageSerializedSize(dp)
}

// SerializeTlvData takes just the TLV data of DynPropose (which covers all of
// the parameters on deck for changing) and serializes just this component. The
// main purpose of this is to make it easier to validate the DynAck signature.
func (dp *DynPropose) SerializeTlvData() ([]byte, error) {
        producers := dynProposeRecords(dp)

        var extra ExtraOpaqueData
        err := extra.PackRecords(producers...)
        if err != nil {
                return nil, err
        }

        return extra, nil
}

func dynProposeRecords(dp *DynPropose) []tlv.RecordProducer {
        recordProducers := make([]tlv.RecordProducer, 0, 7)

        dp.DustLimit.WhenSome(
                func(dl tlv.RecordT[tlv.TlvType0,
                        tlv.BigSizeT[btcutil.Amount]]) {

                        recordProducers = append(recordProducers, &dl)
                },
        )
        dp.MaxValueInFlight.WhenSome(
                func(mvif tlv.RecordT[tlv.TlvType2, MilliSatoshi]) {
                        recordProducers = append(recordProducers, &mvif)
                },
        )
        dp.HtlcMinimum.WhenSome(
                func(hm tlv.RecordT[tlv.TlvType4, MilliSatoshi]) {
                        recordProducers = append(recordProducers, &hm)
                },
        )
        dp.ChannelReserve.WhenSome(
                func(reserve tlv.RecordT[tlv.TlvType6,
                        tlv.BigSizeT[btcutil.Amount]]) {

                        recordProducers = append(recordProducers, &reserve)
                },
        )
        dp.CsvDelay.WhenSome(
                func(wait tlv.RecordT[tlv.TlvType8, uint16]) {
                        recordProducers = append(recordProducers, &wait)
                },
        )
        dp.MaxAcceptedHTLCs.WhenSome(
                func(mah tlv.RecordT[tlv.TlvType10, uint16]) {
                        recordProducers = append(recordProducers, &mah)
                },
        )
        dp.ChannelType.WhenSome(
                func(ty tlv.RecordT[tlv.TlvType12, ChannelType]) {
                        recordProducers = append(recordProducers, &ty)
                },
        )

        return recordProducers
}

1	package lnwire
2
3	import (
4	"bytes"
5	"io"
6
7	"github.com/btcsuite/btcd/btcutil"
8	"github.com/lightningnetwork/lnd/tlv"
9	)
10
11	// DynPropose is a message that is sent during a dynamic commitments negotiation
12	// process. It is sent by both parties to propose new channel parameters.
13	type DynPropose struct {
14	// ChanID identifies the channel whose parameters we are trying to
15	// re-negotiate.
16	ChanID ChannelID
17
18	// DustLimit, if not nil, proposes a change to the dust_limit_satoshis
19	// for the sender's commitment transaction.
20	DustLimit tlv.OptionalRecordT[
21	tlv.TlvType0, tlv.BigSizeT[btcutil.Amount],
22	]
23
24	// MaxValueInFlight, if not nil, proposes a change to the
25	// max_htlc_value_in_flight_msat limit of the sender.
26	MaxValueInFlight tlv.OptionalRecordT[tlv.TlvType2, MilliSatoshi]
27
28	// HtlcMinimum, if not nil, proposes a change to the htlc_minimum_msat
29	// floor of the sender.
30	HtlcMinimum tlv.OptionalRecordT[tlv.TlvType4, MilliSatoshi]
31
32	// ChannelReserve, if not nil, proposes a change to the
33	// channel_reserve_satoshis requirement of the recipient.
34	ChannelReserve tlv.OptionalRecordT[
35	tlv.TlvType6, tlv.BigSizeT[btcutil.Amount],
36	]
37
38	// CsvDelay, if not nil, proposes a change to the to_self_delay
39	// requirement of the recipient.
40	CsvDelay tlv.OptionalRecordT[tlv.TlvType8, uint16]
41
42	// MaxAcceptedHTLCs, if not nil, proposes a change to the
43	// max_accepted_htlcs limit of the sender.
44	MaxAcceptedHTLCs tlv.OptionalRecordT[tlv.TlvType10, uint16]
45
46	// ChannelType, if not nil, proposes a change to the channel_type
47	// parameter.
48	ChannelType tlv.OptionalRecordT[tlv.TlvType12, ChannelType]
49
50	// ExtraData is the set of data that was appended to this message to
51	// fill out the full maximum transport message size. These fields can
52	// be used to specify optional data such as custom TLV fields.
53	//
54	// NOTE: Since the fields in this structure are part of the TLV stream,
55	// ExtraData will contain all TLV records _except_ the ones that are
56	// present in earlier parts of this structure.
57	ExtraData ExtraOpaqueData
58	}
59
60	// A compile time check to ensure DynPropose implements the lnwire.Message
61	// interface.
62	var _ Message = (*DynPropose)(nil)
63
64	// A compile time check to ensure DynPropose implements the
65	// lnwire.SizeableMessage interface.
66	var _ SizeableMessage = (*DynPropose)(nil)
67
68	// Encode serializes the target DynPropose into the passed io.Writer.
69	// Serialization will observe the rules defined by the passed protocol version.
70	//
71	// This is a part of the lnwire.Message interface.
UNCOV 72	func (dp DynPropose) Encode(w bytes.Buffer, _ uint32) error {	×
UNCOV 73	if err := WriteChannelID(w, dp.ChanID); err != nil {	×
74	return err	×
75	}	×
76
77	// Create extra data records.
UNCOV 78	producers, err := dp.ExtraData.RecordProducers()	×
UNCOV 79	if err != nil {	×
80	return err	×
81	}	×
82
83	// Append the known records.
UNCOV 84	producers = append(producers, dynProposeRecords(dp)...)	×
UNCOV 85		×
UNCOV 86	// Encode all records.	×
UNCOV 87	var tlvData ExtraOpaqueData	×
UNCOV 88	err = tlvData.PackRecords(producers...)	×
UNCOV 89	if err != nil {	×
90	return err	×
91	}	×
92
UNCOV 93	return WriteBytes(w, tlvData)	×
94	}
95
96	// Decode deserializes the serialized DynPropose stored in the passed io.Reader
97	// into the target DynPropose using the deserialization rules defined by the
98	// passed protocol version.
99	//
100	// This is a part of the lnwire.Message interface.
UNCOV 101	func (dp *DynPropose) Decode(r io.Reader, _ uint32) error {	×
UNCOV 102	// Parse out the only required field.	×
UNCOV 103	if err := ReadElements(r, &dp.ChanID); err != nil {	×
UNCOV 104	return err	×
UNCOV 105	}	×
106
107	// Parse out TLV stream.
UNCOV 108	var tlvRecords ExtraOpaqueData	×
UNCOV 109	if err := ReadElements(r, &tlvRecords); err != nil {	×
110	return err	×
111	}	×
112
113	// Prepare receiving buffers to be filled by TLV extraction.
UNCOV 114	var dustLimit tlv.RecordT[tlv.TlvType0, tlv.BigSizeT[btcutil.Amount]]	×
UNCOV 115	var maxValue tlv.RecordT[tlv.TlvType2, MilliSatoshi]	×
UNCOV 116	var htlcMin tlv.RecordT[tlv.TlvType4, MilliSatoshi]	×
UNCOV 117	var reserve tlv.RecordT[tlv.TlvType6, tlv.BigSizeT[btcutil.Amount]]	×
UNCOV 118	csvDelay := dp.CsvDelay.Zero()	×
UNCOV 119	maxHtlcs := dp.MaxAcceptedHTLCs.Zero()	×
UNCOV 120	chanType := dp.ChannelType.Zero()	×
UNCOV 121		×
UNCOV 122	knownRecords, extraData, err := ParseAndExtractExtraData(	×
UNCOV 123	tlvRecords, &dustLimit, &maxValue, &htlcMin, &reserve,	×
UNCOV 124	&csvDelay, &maxHtlcs, &chanType,	×
UNCOV 125	)	×
UNCOV 126	if err != nil {	×
UNCOV 127	return err	×
UNCOV 128	}	×
129
130	// Check the results of the TLV Stream decoding and appropriately set
131	// message fields.
UNCOV 132	if _, ok := knownRecords[dp.DustLimit.TlvType()]; ok {	×
UNCOV 133	dp.DustLimit = tlv.SomeRecordT(dustLimit)	×
UNCOV 134	}	×
135
UNCOV 136	if _, ok := knownRecords[dp.MaxValueInFlight.TlvType()]; ok {	×
UNCOV 137	dp.MaxValueInFlight = tlv.SomeRecordT(maxValue)	×
UNCOV 138	}	×
139
UNCOV 140	if _, ok := knownRecords[dp.HtlcMinimum.TlvType()]; ok {	×
UNCOV 141	dp.HtlcMinimum = tlv.SomeRecordT(htlcMin)	×
UNCOV 142	}	×
143
UNCOV 144	if _, ok := knownRecords[dp.ChannelReserve.TlvType()]; ok {	×
UNCOV 145	dp.ChannelReserve = tlv.SomeRecordT(reserve)	×
UNCOV 146	}	×
147
UNCOV 148	if _, ok := knownRecords[dp.CsvDelay.TlvType()]; ok {	×
UNCOV 149	dp.CsvDelay = tlv.SomeRecordT(csvDelay)	×
UNCOV 150	}	×
151
UNCOV 152	if _, ok := knownRecords[dp.MaxAcceptedHTLCs.TlvType()]; ok {	×
UNCOV 153	dp.MaxAcceptedHTLCs = tlv.SomeRecordT(maxHtlcs)	×
UNCOV 154	}	×
155
UNCOV 156	if _, ok := knownRecords[dp.ChannelType.TlvType()]; ok {	×
UNCOV 157	dp.ChannelType = tlv.SomeRecordT(chanType)	×
UNCOV 158	}	×
159
UNCOV 160	dp.ExtraData = extraData	×
UNCOV 161		×
UNCOV 162	return nil	×
163	}
164
165	// MsgType returns the MessageType code which uniquely identifies this message
166	// as a DynPropose on the wire.
167	//
168	// This is part of the lnwire.Message interface.
UNCOV 169	func (dp *DynPropose) MsgType() MessageType {	×
UNCOV 170	return MsgDynPropose	×
UNCOV 171	}	×
172
173	// SerializedSize returns the serialized size of the message in bytes.
174	//
175	// This is part of the lnwire.SizeableMessage interface.
176	func (dp *DynPropose) SerializedSize() (uint32, error) {	×
177	return MessageSerializedSize(dp)	×
178	}	×
179
180	// SerializeTlvData takes just the TLV data of DynPropose (which covers all of
181	// the parameters on deck for changing) and serializes just this component. The
182	// main purpose of this is to make it easier to validate the DynAck signature.
183	func (dp *DynPropose) SerializeTlvData() ([]byte, error) {	×
184	producers := dynProposeRecords(dp)	×
185		×
186	var extra ExtraOpaqueData	×
187	err := extra.PackRecords(producers...)	×
188	if err != nil {	×
189	return nil, err	×
190	}	×
191
192	return extra, nil	×
193	}
194
UNCOV 195	func dynProposeRecords(dp *DynPropose) []tlv.RecordProducer {	×
UNCOV 196	recordProducers := make([]tlv.RecordProducer, 0, 7)	×
UNCOV 197		×
UNCOV 198	dp.DustLimit.WhenSome(	×
UNCOV 199	func(dl tlv.RecordT[tlv.TlvType0,	×
UNCOV 200	tlv.BigSizeT[btcutil.Amount]]) {	×
UNCOV 201		×
UNCOV 202	recordProducers = append(recordProducers, &dl)	×
UNCOV 203	},	×
204	)
UNCOV 205	dp.MaxValueInFlight.WhenSome(	×
UNCOV 206	func(mvif tlv.RecordT[tlv.TlvType2, MilliSatoshi]) {	×
UNCOV 207	recordProducers = append(recordProducers, &mvif)	×
UNCOV 208	},	×
209	)
UNCOV 210	dp.HtlcMinimum.WhenSome(	×
UNCOV 211	func(hm tlv.RecordT[tlv.TlvType4, MilliSatoshi]) {	×
UNCOV 212	recordProducers = append(recordProducers, &hm)	×
UNCOV 213	},	×
214	)
UNCOV 215	dp.ChannelReserve.WhenSome(	×
UNCOV 216	func(reserve tlv.RecordT[tlv.TlvType6,	×
UNCOV 217	tlv.BigSizeT[btcutil.Amount]]) {	×
UNCOV 218		×
UNCOV 219	recordProducers = append(recordProducers, &reserve)	×
UNCOV 220	},	×
221	)
UNCOV 222	dp.CsvDelay.WhenSome(	×
UNCOV 223	func(wait tlv.RecordT[tlv.TlvType8, uint16]) {	×
UNCOV 224	recordProducers = append(recordProducers, &wait)	×
UNCOV 225	},	×
226	)
UNCOV 227	dp.MaxAcceptedHTLCs.WhenSome(	×
UNCOV 228	func(mah tlv.RecordT[tlv.TlvType10, uint16]) {	×
UNCOV 229	recordProducers = append(recordProducers, &mah)	×
UNCOV 230	},	×
231	)
UNCOV 232	dp.ChannelType.WhenSome(	×
UNCOV 233	func(ty tlv.RecordT[tlv.TlvType12, ChannelType]) {	×
UNCOV 234	recordProducers = append(recordProducers, &ty)	×
UNCOV 235	},	×
236	)
237
UNCOV 238	return recordProducers	×
239	}

lightningnetwork / lnd / 16466354971

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