15736109134

Committed 18 Jun 2025 02:46PM UTC coverage: 58.197% (-10.1%) from 68.248%

Build # 15736109134

Build Type

Pull #9752

github

Committed by

web-flow

Commit Message

Merge d2634a68c into 31c74f20f

Pull Request Pull Request #9752: routerrpc: reject payment to invoice that don't have payment secret or blinded paths

Run Details

6 of 13 new or added lines in 2 files covered. (46.15%)

28331 existing lines in 455 files now uncovered.

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46.74

/lnwire/channel_update.go

package lnwire

import (
        "bytes"
        "fmt"
        "io"

        "github.com/btcsuite/btcd/chaincfg/chainhash"
        "github.com/lightningnetwork/lnd/tlv"
)

// ChanUpdateMsgFlags is a bitfield that signals whether optional fields are
// present in the ChannelUpdate.
type ChanUpdateMsgFlags uint8

const (
        // ChanUpdateRequiredMaxHtlc is a bit that indicates whether the
        // required htlc_maximum_msat field is present in this ChannelUpdate.
        ChanUpdateRequiredMaxHtlc ChanUpdateMsgFlags = 1 << iota
)

// String returns the bitfield flags as a string.
func (c ChanUpdateMsgFlags) String() string {
        return fmt.Sprintf("%08b", c)
}

// HasMaxHtlc returns true if the htlc_maximum_msat option bit is set in the
// message flags.
func (c ChanUpdateMsgFlags) HasMaxHtlc() bool {
        return c&ChanUpdateRequiredMaxHtlc != 0
}

// ChanUpdateChanFlags is a bitfield that signals various options concerning a
// particular channel edge. Each bit is to be examined in order to determine
// how the ChannelUpdate message is to be interpreted.
type ChanUpdateChanFlags uint8

const (
        // ChanUpdateDirection indicates the direction of a channel update. If
        // this bit is set to 0 if Node1 (the node with the "smaller" Node ID)
        // is updating the channel, and to 1 otherwise.
        ChanUpdateDirection ChanUpdateChanFlags = 1 << iota

        // ChanUpdateDisabled is a bit that indicates if the channel edge
        // selected by the ChanUpdateDirection bit is to be treated as being
        // disabled.
        ChanUpdateDisabled
)

// IsDisabled determines whether the channel flags has the disabled bit set.
func (c ChanUpdateChanFlags) IsDisabled() bool {
        return c&ChanUpdateDisabled == ChanUpdateDisabled
}

// String returns the bitfield flags as a string.
func (c ChanUpdateChanFlags) String() string {
        return fmt.Sprintf("%08b", c)
}

// ChannelUpdate1 message is used after channel has been initially announced.
// Each side independently announces its fees and minimum expiry for HTLCs and
// other parameters. Also this message is used to redeclare initially set
// channel parameters.
type ChannelUpdate1 struct {
        // Signature is used to validate the announced data and prove the
        // ownership of node id.
        Signature Sig

        // ChainHash denotes the target chain that this channel was opened
        // within. This value should be the genesis hash of the target chain.
        // Along with the short channel ID, this uniquely identifies the
        // channel globally in a blockchain.
        ChainHash chainhash.Hash

        // ShortChannelID is the unique description of the funding transaction.
        ShortChannelID ShortChannelID

        // Timestamp allows ordering in the case of multiple announcements. We
        // should ignore the message if timestamp is not greater than
        // the last-received.
        Timestamp uint32

        // MessageFlags is a bitfield that describes whether optional fields
        // are present in this update. Currently, the least-significant bit
        // must be set to 1 if the optional field MaxHtlc is present.
        MessageFlags ChanUpdateMsgFlags

        // ChannelFlags is a bitfield that describes additional meta-data
        // concerning how the update is to be interpreted. Currently, the
        // least-significant bit must be set to 0 if the creating node
        // corresponds to the first node in the previously sent channel
        // announcement and 1 otherwise. If the second bit is set, then the
        // channel is set to be disabled.
        ChannelFlags ChanUpdateChanFlags

        // TimeLockDelta is the minimum number of blocks this node requires to
        // be added to the expiry of HTLCs. This is a security parameter
        // determined by the node operator. This value represents the required
        // gap between the time locks of the incoming and outgoing HTLC's set
        // to this node.
        TimeLockDelta uint16

        // HtlcMinimumMsat is the minimum HTLC value which will be accepted.
        HtlcMinimumMsat MilliSatoshi

        // BaseFee is the base fee that must be used for incoming HTLC's to
        // this particular channel. This value will be tacked onto the required
        // for a payment independent of the size of the payment.
        BaseFee uint32

        // FeeRate is the fee rate that will be charged per millionth of a
        // satoshi.
        FeeRate uint32

        // HtlcMaximumMsat is the maximum HTLC value which will be accepted.
        HtlcMaximumMsat MilliSatoshi

        // InboundFee is an optional TLV record that contains the fee
        // information for incoming HTLCs.
        InboundFee tlv.OptionalRecordT[tlv.TlvType55555, Fee]

        // 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.
        ExtraOpaqueData ExtraOpaqueData
}

// A compile time check to ensure ChannelUpdate implements the lnwire.Message
// interface.
var _ Message = (*ChannelUpdate1)(nil)

// A compile time check to ensure ChannelUpdate1 implements the
// lnwire.SizeableMessage interface.
var _ SizeableMessage = (*ChannelUpdate1)(nil)

// Decode deserializes a serialized ChannelUpdate stored in the passed
// io.Reader observing the specified protocol version.
//
// This is part of the lnwire.Message interface.
func (a *ChannelUpdate1) Decode(r io.Reader, _ uint32) error {
        err := ReadElements(r,
                &a.Signature,
                a.ChainHash[:],
                &a.ShortChannelID,
                &a.Timestamp,
                &a.MessageFlags,
                &a.ChannelFlags,
                &a.TimeLockDelta,
                &a.HtlcMinimumMsat,
                &a.BaseFee,
                &a.FeeRate,
        )
        if err != nil {
                return err
        }

        // Now check whether the max HTLC field is present and read it if so.
        if a.MessageFlags.HasMaxHtlc() {
                if err := ReadElements(r, &a.HtlcMaximumMsat); err != nil {
                        return err
                }
        }

        var tlvRecords ExtraOpaqueData
        if err := ReadElements(r, &tlvRecords); err != nil {
                return err
        }

        var inboundFee = a.InboundFee.Zero()
        typeMap, err := tlvRecords.ExtractRecords(&inboundFee)
        if err != nil {
                return err
        }

        val, ok := typeMap[a.InboundFee.TlvType()]
        if ok && val == nil {
                a.InboundFee = tlv.SomeRecordT(inboundFee)
        }

        if len(tlvRecords) != 0 {
                a.ExtraOpaqueData = tlvRecords
        }

        return nil
}

// Encode serializes the target ChannelUpdate into the passed io.Writer
// observing the protocol version specified.
//
// This is part of the lnwire.Message interface.
func (a *ChannelUpdate1) Encode(w *bytes.Buffer, pver uint32) error {
        if err := WriteSig(w, a.Signature); err != nil {
                return err
        }

        if err := WriteBytes(w, a.ChainHash[:]); err != nil {
                return err
        }

        if err := WriteShortChannelID(w, a.ShortChannelID); err != nil {
                return err
        }

        if err := WriteUint32(w, a.Timestamp); err != nil {
                return err
        }

        if err := WriteChanUpdateMsgFlags(w, a.MessageFlags); err != nil {
                return err
        }

        if err := WriteChanUpdateChanFlags(w, a.ChannelFlags); err != nil {
                return err
        }

        if err := WriteUint16(w, a.TimeLockDelta); err != nil {
                return err
        }

        if err := WriteMilliSatoshi(w, a.HtlcMinimumMsat); err != nil {
                return err
        }

        if err := WriteUint32(w, a.BaseFee); err != nil {
                return err
        }

        if err := WriteUint32(w, a.FeeRate); err != nil {
                return err
        }

        // Now append optional fields if they are set. Currently, the only
        // optional field is max HTLC.
        if a.MessageFlags.HasMaxHtlc() {
                err := WriteMilliSatoshi(w, a.HtlcMaximumMsat)
                if err != nil {
                        return err
                }
        }

        recordProducers := make([]tlv.RecordProducer, 0, 1)
        a.InboundFee.WhenSome(func(fee tlv.RecordT[tlv.TlvType55555, Fee]) {
                recordProducers = append(recordProducers, &fee)
        })

        err := EncodeMessageExtraData(&a.ExtraOpaqueData, recordProducers...)
        if err != nil {
                return err
        }

        // Finally, append any extra opaque data.
        return WriteBytes(w, a.ExtraOpaqueData)
}

// MsgType returns the integer uniquely identifying this message type on the
// wire.
//
// This is part of the lnwire.Message interface.
func (a *ChannelUpdate1) MsgType() MessageType {
        return MsgChannelUpdate
}

// DataToSign is used to retrieve part of the announcement message which should
// be signed.
func (a *ChannelUpdate1) DataToSign() ([]byte, error) {
        // We should not include the signatures itself.
        b := make([]byte, 0, MaxMsgBody)
        buf := bytes.NewBuffer(b)
        if err := WriteBytes(buf, a.ChainHash[:]); err != nil {
                return nil, err
        }

        if err := WriteShortChannelID(buf, a.ShortChannelID); err != nil {
                return nil, err
        }

        if err := WriteUint32(buf, a.Timestamp); err != nil {
                return nil, err
        }

        if err := WriteChanUpdateMsgFlags(buf, a.MessageFlags); err != nil {
                return nil, err
        }

        if err := WriteChanUpdateChanFlags(buf, a.ChannelFlags); err != nil {
                return nil, err
        }

        if err := WriteUint16(buf, a.TimeLockDelta); err != nil {
                return nil, err
        }

        if err := WriteMilliSatoshi(buf, a.HtlcMinimumMsat); err != nil {
                return nil, err
        }

        if err := WriteUint32(buf, a.BaseFee); err != nil {
                return nil, err
        }

        if err := WriteUint32(buf, a.FeeRate); err != nil {
                return nil, err
        }

        // Now append optional fields if they are set. Currently, the only
        // optional field is max HTLC.
        if a.MessageFlags.HasMaxHtlc() {
                err := WriteMilliSatoshi(buf, a.HtlcMaximumMsat)
                if err != nil {
                        return nil, err
                }
        }

        // Finally, append any extra opaque data.
        if err := WriteBytes(buf, a.ExtraOpaqueData); err != nil {
                return nil, err
        }

        return buf.Bytes(), nil
}

// SCID returns the ShortChannelID of the channel that the update applies to.
//
// NOTE: this is part of the ChannelUpdate interface.
func (a *ChannelUpdate1) SCID() ShortChannelID {
        return a.ShortChannelID
}

// IsNode1 is true if the update was produced by node 1 of the channel peers.
// Node 1 is the node with the lexicographically smaller public key.
//
// NOTE: this is part of the ChannelUpdate interface.
func (a *ChannelUpdate1) IsNode1() bool {
        return a.ChannelFlags&ChanUpdateDirection == 0
}

// IsDisabled is true if the update is announcing that the channel should be
// considered disabled.
//
// NOTE: this is part of the ChannelUpdate interface.
func (a *ChannelUpdate1) IsDisabled() bool {
        return a.ChannelFlags&ChanUpdateDisabled == ChanUpdateDisabled
}

// GetChainHash returns the hash of the chain that the message is referring to.
//
// NOTE: this is part of the ChannelUpdate interface.
func (a *ChannelUpdate1) GetChainHash() chainhash.Hash {
        return a.ChainHash
}

// ForwardingPolicy returns the set of forwarding constraints of the update.
//
// NOTE: this is part of the ChannelUpdate interface.
func (a *ChannelUpdate1) ForwardingPolicy() *ForwardingPolicy {
        return &ForwardingPolicy{
                TimeLockDelta: a.TimeLockDelta,
                BaseFee:       MilliSatoshi(a.BaseFee),
                FeeRate:       MilliSatoshi(a.FeeRate),
                MinHTLC:       a.HtlcMinimumMsat,
                HasMaxHTLC:    a.MessageFlags.HasMaxHtlc(),
                MaxHTLC:       a.HtlcMaximumMsat,
        }
}

// CmpAge can be used to determine if the update is older or newer than the
// passed update. It returns 1 if this update is newer, -1 if it is older, and
// 0 if they are the same age.
//
// NOTE: this is part of the ChannelUpdate interface.
func (a *ChannelUpdate1) CmpAge(update ChannelUpdate) (CompareResult, error) {
        other, ok := update.(*ChannelUpdate1)
        if !ok {
                return 0, fmt.Errorf("expected *ChannelUpdate1, got: %T",
                        update)
        }

        switch {
        case a.Timestamp > other.Timestamp:
                return GreaterThan, nil
        case a.Timestamp < other.Timestamp:
                return LessThan, nil
        default:
                return EqualTo, nil
        }
}

// SetDisabledFlag can be used to adjust the disabled flag of an update.
//
// NOTE: this is part of the ChannelUpdate interface.
func (a *ChannelUpdate1) SetDisabledFlag(disabled bool) {
        if disabled {
                a.ChannelFlags |= ChanUpdateDisabled
        } else {
                a.ChannelFlags &= ^ChanUpdateDisabled
        }
}

// SetSCID can be used to overwrite the SCID of the update.
//
// NOTE: this is part of the ChannelUpdate interface.
func (a *ChannelUpdate1) SetSCID(scid ShortChannelID) {
        a.ShortChannelID = scid
}

// A compile time assertion to ensure ChannelUpdate1 implements the
// ChannelUpdate interface.
var _ ChannelUpdate = (*ChannelUpdate1)(nil)

// SerializedSize returns the serialized size of the message in bytes.
//
// This is part of the lnwire.SizeableMessage interface.
func (a *ChannelUpdate1) SerializedSize() (uint32, error) {
        return MessageSerializedSize(a)
}

1	package lnwire
2
3	import (
4	"bytes"
5	"fmt"
6	"io"
7
8	"github.com/btcsuite/btcd/chaincfg/chainhash"
9	"github.com/lightningnetwork/lnd/tlv"
10	)
11
12	// ChanUpdateMsgFlags is a bitfield that signals whether optional fields are
13	// present in the ChannelUpdate.
14	type ChanUpdateMsgFlags uint8
15
16	const (
17	// ChanUpdateRequiredMaxHtlc is a bit that indicates whether the
18	// required htlc_maximum_msat field is present in this ChannelUpdate.
19	ChanUpdateRequiredMaxHtlc ChanUpdateMsgFlags = 1 << iota
20	)
21
22	// String returns the bitfield flags as a string.
23	func (c ChanUpdateMsgFlags) String() string {	3✔
24	return fmt.Sprintf("%08b", c)	3✔
25	}	3✔
26
27	// HasMaxHtlc returns true if the htlc_maximum_msat option bit is set in the
28	// message flags.
29	func (c ChanUpdateMsgFlags) HasMaxHtlc() bool {	3✔
30	return c&ChanUpdateRequiredMaxHtlc != 0	3✔
31	}	3✔
32
33	// ChanUpdateChanFlags is a bitfield that signals various options concerning a
34	// particular channel edge. Each bit is to be examined in order to determine
35	// how the ChannelUpdate message is to be interpreted.
36	type ChanUpdateChanFlags uint8
37
38	const (
39	// ChanUpdateDirection indicates the direction of a channel update. If
40	// this bit is set to 0 if Node1 (the node with the "smaller" Node ID)
41	// is updating the channel, and to 1 otherwise.
42	ChanUpdateDirection ChanUpdateChanFlags = 1 << iota
43
44	// ChanUpdateDisabled is a bit that indicates if the channel edge
45	// selected by the ChanUpdateDirection bit is to be treated as being
46	// disabled.
47	ChanUpdateDisabled
48	)
49
50	// IsDisabled determines whether the channel flags has the disabled bit set.
51	func (c ChanUpdateChanFlags) IsDisabled() bool {	3✔
52	return c&ChanUpdateDisabled == ChanUpdateDisabled	3✔
53	}	3✔
54
55	// String returns the bitfield flags as a string.
56	func (c ChanUpdateChanFlags) String() string {	3✔
57	return fmt.Sprintf("%08b", c)	3✔
58	}	3✔
59
60	// ChannelUpdate1 message is used after channel has been initially announced.
61	// Each side independently announces its fees and minimum expiry for HTLCs and
62	// other parameters. Also this message is used to redeclare initially set
63	// channel parameters.
64	type ChannelUpdate1 struct {
65	// Signature is used to validate the announced data and prove the
66	// ownership of node id.
67	Signature Sig
68
69	// ChainHash denotes the target chain that this channel was opened
70	// within. This value should be the genesis hash of the target chain.
71	// Along with the short channel ID, this uniquely identifies the
72	// channel globally in a blockchain.
73	ChainHash chainhash.Hash
74
75	// ShortChannelID is the unique description of the funding transaction.
76	ShortChannelID ShortChannelID
77
78	// Timestamp allows ordering in the case of multiple announcements. We
79	// should ignore the message if timestamp is not greater than
80	// the last-received.
81	Timestamp uint32
82
83	// MessageFlags is a bitfield that describes whether optional fields
84	// are present in this update. Currently, the least-significant bit
85	// must be set to 1 if the optional field MaxHtlc is present.
86	MessageFlags ChanUpdateMsgFlags
87
88	// ChannelFlags is a bitfield that describes additional meta-data
89	// concerning how the update is to be interpreted. Currently, the
90	// least-significant bit must be set to 0 if the creating node
91	// corresponds to the first node in the previously sent channel
92	// announcement and 1 otherwise. If the second bit is set, then the
93	// channel is set to be disabled.
94	ChannelFlags ChanUpdateChanFlags
95
96	// TimeLockDelta is the minimum number of blocks this node requires to
97	// be added to the expiry of HTLCs. This is a security parameter
98	// determined by the node operator. This value represents the required
99	// gap between the time locks of the incoming and outgoing HTLC's set
100	// to this node.
101	TimeLockDelta uint16
102
103	// HtlcMinimumMsat is the minimum HTLC value which will be accepted.
104	HtlcMinimumMsat MilliSatoshi
105
106	// BaseFee is the base fee that must be used for incoming HTLC's to
107	// this particular channel. This value will be tacked onto the required
108	// for a payment independent of the size of the payment.
109	BaseFee uint32
110
111	// FeeRate is the fee rate that will be charged per millionth of a
112	// satoshi.
113	FeeRate uint32
114
115	// HtlcMaximumMsat is the maximum HTLC value which will be accepted.
116	HtlcMaximumMsat MilliSatoshi
117
118	// InboundFee is an optional TLV record that contains the fee
119	// information for incoming HTLCs.
120	InboundFee tlv.OptionalRecordT[tlv.TlvType55555, Fee]
121
122	// ExtraData is the set of data that was appended to this message to
123	// fill out the full maximum transport message size. These fields can
124	// be used to specify optional data such as custom TLV fields.
125	ExtraOpaqueData ExtraOpaqueData
126	}
127
128	// A compile time check to ensure ChannelUpdate implements the lnwire.Message
129	// interface.
130	var _ Message = (*ChannelUpdate1)(nil)
131
132	// A compile time check to ensure ChannelUpdate1 implements the
133	// lnwire.SizeableMessage interface.
134	var _ SizeableMessage = (*ChannelUpdate1)(nil)
135
136	// Decode deserializes a serialized ChannelUpdate stored in the passed
137	// io.Reader observing the specified protocol version.
138	//
139	// This is part of the lnwire.Message interface.
140	func (a *ChannelUpdate1) Decode(r io.Reader, _ uint32) error {	3✔
141	err := ReadElements(r,	3✔
142	&a.Signature,	3✔
143	a.ChainHash[:],	3✔
144	&a.ShortChannelID,	3✔
145	&a.Timestamp,	3✔
146	&a.MessageFlags,	3✔
147	&a.ChannelFlags,	3✔
148	&a.TimeLockDelta,	3✔
149	&a.HtlcMinimumMsat,	3✔
150	&a.BaseFee,	3✔
151	&a.FeeRate,	3✔
152	)	3✔
153	if err != nil {	3✔
UNCOV 154	return err	×
UNCOV 155	}	×
156
157	// Now check whether the max HTLC field is present and read it if so.
158	if a.MessageFlags.HasMaxHtlc() {	6✔
159	if err := ReadElements(r, &a.HtlcMaximumMsat); err != nil {	3✔
UNCOV 160	return err	×
UNCOV 161	}	×
162	}
163
164	var tlvRecords ExtraOpaqueData	3✔
165	if err := ReadElements(r, &tlvRecords); err != nil {	3✔
166	return err	×
167	}	×
168
169	var inboundFee = a.InboundFee.Zero()	3✔
170	typeMap, err := tlvRecords.ExtractRecords(&inboundFee)	3✔
171	if err != nil {	3✔
UNCOV 172	return err	×
UNCOV 173	}	×
174
175	val, ok := typeMap[a.InboundFee.TlvType()]	3✔
176	if ok && val == nil {	6✔
177	a.InboundFee = tlv.SomeRecordT(inboundFee)	3✔
178	}	3✔
179
180	if len(tlvRecords) != 0 {	6✔
181	a.ExtraOpaqueData = tlvRecords	3✔
182	}	3✔
183
184	return nil	3✔
185	}
186
187	// Encode serializes the target ChannelUpdate into the passed io.Writer
188	// observing the protocol version specified.
189	//
190	// This is part of the lnwire.Message interface.
191	func (a ChannelUpdate1) Encode(w bytes.Buffer, pver uint32) error {	3✔
192	if err := WriteSig(w, a.Signature); err != nil {	3✔
193	return err	×
194	}	×
195
196	if err := WriteBytes(w, a.ChainHash[:]); err != nil {	3✔
197	return err	×
198	}	×
199
200	if err := WriteShortChannelID(w, a.ShortChannelID); err != nil {	3✔
201	return err	×
202	}	×
203
204	if err := WriteUint32(w, a.Timestamp); err != nil {	3✔
205	return err	×
206	}	×
207
208	if err := WriteChanUpdateMsgFlags(w, a.MessageFlags); err != nil {	3✔
209	return err	×
210	}	×
211
212	if err := WriteChanUpdateChanFlags(w, a.ChannelFlags); err != nil {	3✔
213	return err	×
214	}	×
215
216	if err := WriteUint16(w, a.TimeLockDelta); err != nil {	3✔
217	return err	×
218	}	×
219
220	if err := WriteMilliSatoshi(w, a.HtlcMinimumMsat); err != nil {	3✔
221	return err	×
222	}	×
223
224	if err := WriteUint32(w, a.BaseFee); err != nil {	3✔
225	return err	×
226	}	×
227
228	if err := WriteUint32(w, a.FeeRate); err != nil {	3✔
229	return err	×
230	}	×
231
232	// Now append optional fields if they are set. Currently, the only
233	// optional field is max HTLC.
234	if a.MessageFlags.HasMaxHtlc() {	6✔
235	err := WriteMilliSatoshi(w, a.HtlcMaximumMsat)	3✔
236	if err != nil {	3✔
237	return err	×
238	}	×
239	}
240
241	recordProducers := make([]tlv.RecordProducer, 0, 1)	3✔
242	a.InboundFee.WhenSome(func(fee tlv.RecordT[tlv.TlvType55555, Fee]) {	6✔
243	recordProducers = append(recordProducers, &fee)	3✔
244	})	3✔
245
246	err := EncodeMessageExtraData(&a.ExtraOpaqueData, recordProducers...)	3✔
247	if err != nil {	3✔
248	return err	×
249	}	×
250
251	// Finally, append any extra opaque data.
252	return WriteBytes(w, a.ExtraOpaqueData)	3✔
253	}
254
255	// MsgType returns the integer uniquely identifying this message type on the
256	// wire.
257	//
258	// This is part of the lnwire.Message interface.
259	func (a *ChannelUpdate1) MsgType() MessageType {	3✔
260	return MsgChannelUpdate	3✔
261	}	3✔
262
263	// DataToSign is used to retrieve part of the announcement message which should
264	// be signed.
265	func (a *ChannelUpdate1) DataToSign() ([]byte, error) {	3✔
266	// We should not include the signatures itself.	3✔
267	b := make([]byte, 0, MaxMsgBody)	3✔
268	buf := bytes.NewBuffer(b)	3✔
269	if err := WriteBytes(buf, a.ChainHash[:]); err != nil {	3✔
270	return nil, err	×
271	}	×
272
273	if err := WriteShortChannelID(buf, a.ShortChannelID); err != nil {	3✔
274	return nil, err	×
275	}	×
276
277	if err := WriteUint32(buf, a.Timestamp); err != nil {	3✔
278	return nil, err	×
279	}	×
280
281	if err := WriteChanUpdateMsgFlags(buf, a.MessageFlags); err != nil {	3✔
282	return nil, err	×
283	}	×
284
285	if err := WriteChanUpdateChanFlags(buf, a.ChannelFlags); err != nil {	3✔
286	return nil, err	×
287	}	×
288
289	if err := WriteUint16(buf, a.TimeLockDelta); err != nil {	3✔
290	return nil, err	×
291	}	×
292
293	if err := WriteMilliSatoshi(buf, a.HtlcMinimumMsat); err != nil {	3✔
294	return nil, err	×
295	}	×
296
297	if err := WriteUint32(buf, a.BaseFee); err != nil {	3✔
298	return nil, err	×
299	}	×
300
301	if err := WriteUint32(buf, a.FeeRate); err != nil {	3✔
302	return nil, err	×
303	}	×
304
305	// Now append optional fields if they are set. Currently, the only
306	// optional field is max HTLC.
307	if a.MessageFlags.HasMaxHtlc() {	6✔
308	err := WriteMilliSatoshi(buf, a.HtlcMaximumMsat)	3✔
309	if err != nil {	3✔
310	return nil, err	×
311	}	×
312	}
313
314	// Finally, append any extra opaque data.
315	if err := WriteBytes(buf, a.ExtraOpaqueData); err != nil {	3✔
316	return nil, err	×
317	}	×
318
319	return buf.Bytes(), nil	3✔
320	}
321
322	// SCID returns the ShortChannelID of the channel that the update applies to.
323	//
324	// NOTE: this is part of the ChannelUpdate interface.
325	func (a *ChannelUpdate1) SCID() ShortChannelID {	×
326	return a.ShortChannelID	×
327	}	×
328
329	// IsNode1 is true if the update was produced by node 1 of the channel peers.
330	// Node 1 is the node with the lexicographically smaller public key.
331	//
332	// NOTE: this is part of the ChannelUpdate interface.
333	func (a *ChannelUpdate1) IsNode1() bool {	×
334	return a.ChannelFlags&ChanUpdateDirection == 0	×
335	}	×
336
337	// IsDisabled is true if the update is announcing that the channel should be
338	// considered disabled.
339	//
340	// NOTE: this is part of the ChannelUpdate interface.
341	func (a *ChannelUpdate1) IsDisabled() bool {	×
342	return a.ChannelFlags&ChanUpdateDisabled == ChanUpdateDisabled	×
343	}	×
344
345	// GetChainHash returns the hash of the chain that the message is referring to.
346	//
347	// NOTE: this is part of the ChannelUpdate interface.
348	func (a *ChannelUpdate1) GetChainHash() chainhash.Hash {	×
349	return a.ChainHash	×
350	}	×
351
352	// ForwardingPolicy returns the set of forwarding constraints of the update.
353	//
354	// NOTE: this is part of the ChannelUpdate interface.
355	func (a ChannelUpdate1) ForwardingPolicy() ForwardingPolicy {	×
356	return &ForwardingPolicy{	×
357	TimeLockDelta: a.TimeLockDelta,	×
358	BaseFee: MilliSatoshi(a.BaseFee),	×
359	FeeRate: MilliSatoshi(a.FeeRate),	×
360	MinHTLC: a.HtlcMinimumMsat,	×
361	HasMaxHTLC: a.MessageFlags.HasMaxHtlc(),	×
362	MaxHTLC: a.HtlcMaximumMsat,	×
363	}	×
364	}	×
365
366	// CmpAge can be used to determine if the update is older or newer than the
367	// passed update. It returns 1 if this update is newer, -1 if it is older, and
368	// 0 if they are the same age.
369	//
370	// NOTE: this is part of the ChannelUpdate interface.
371	func (a *ChannelUpdate1) CmpAge(update ChannelUpdate) (CompareResult, error) {	×
372	other, ok := update.(*ChannelUpdate1)	×
373	if !ok {	×
374	return 0, fmt.Errorf("expected *ChannelUpdate1, got: %T",	×
375	update)	×
376	}	×
377
378	switch {	×
379	case a.Timestamp > other.Timestamp:	×
380	return GreaterThan, nil	×
381	case a.Timestamp < other.Timestamp:	×
382	return LessThan, nil	×
383	default:	×
384	return EqualTo, nil	×
385	}
386	}
387
388	// SetDisabledFlag can be used to adjust the disabled flag of an update.
389	//
390	// NOTE: this is part of the ChannelUpdate interface.
391	func (a *ChannelUpdate1) SetDisabledFlag(disabled bool) {	×
392	if disabled {	×
393	a.ChannelFlags \|= ChanUpdateDisabled	×
394	} else {	×
395	a.ChannelFlags &= ^ChanUpdateDisabled	×
396	}	×
397	}
398
399	// SetSCID can be used to overwrite the SCID of the update.
400	//
401	// NOTE: this is part of the ChannelUpdate interface.
402	func (a *ChannelUpdate1) SetSCID(scid ShortChannelID) {	×
403	a.ShortChannelID = scid	×
404	}	×
405
406	// A compile time assertion to ensure ChannelUpdate1 implements the
407	// ChannelUpdate interface.
408	var _ ChannelUpdate = (*ChannelUpdate1)(nil)
409
410	// SerializedSize returns the serialized size of the message in bytes.
411	//
412	// This is part of the lnwire.SizeableMessage interface.
413	func (a *ChannelUpdate1) SerializedSize() (uint32, error) {	3✔
414	return MessageSerializedSize(a)	3✔
415	}	3✔

lightningnetwork / lnd / 15736109134

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