19027031130

Committed 03 Nov 2025 07:27AM UTC coverage: 56.922% (-9.7%) from 66.639%

Build # 19027031130

Build Type

Pull #9334

github

Committed by

web-flow

Commit Message

Merge b9be11a16 into f938e40af

Pull Request Pull Request #9334: Use all valid routes during blinded path construction

Run Details

9 of 11 new or added lines in 3 files covered. (81.82%)

29175 existing lines in 461 files now uncovered.

99696 of 175144 relevant lines covered (56.92%)

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Source File
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67.86

/netann/node_announcement.go

package netann

import (
        "bytes"
        "errors"
        "fmt"
        "image/color"
        "net"
        "time"

        "github.com/btcsuite/btcd/btcec/v2"
        "github.com/btcsuite/btcd/chaincfg/chainhash"
        "github.com/lightningnetwork/lnd/keychain"
        "github.com/lightningnetwork/lnd/lnwallet"
        "github.com/lightningnetwork/lnd/lnwire"
)

// NodeAnnModifier is a closure that makes in-place modifications to an
// lnwire.NodeAnnouncement1.
type NodeAnnModifier func(*lnwire.NodeAnnouncement1)

// NodeAnnSetAlias is a functional option that sets the alias of the
// given node announcement.
func NodeAnnSetAlias(alias lnwire.NodeAlias) func(*lnwire.NodeAnnouncement1) {
        return func(nodeAnn *lnwire.NodeAnnouncement1) {
                nodeAnn.Alias = alias
        }
}

// NodeAnnSetAddrs is a functional option that allows updating the addresses of
// the given node announcement.
func NodeAnnSetAddrs(addrs []net.Addr) func(*lnwire.NodeAnnouncement1) {
        return func(nodeAnn *lnwire.NodeAnnouncement1) {
                nodeAnn.Addresses = addrs
        }
}

// NodeAnnSetColor is a functional option that sets the color of the
// given node announcement.
func NodeAnnSetColor(newColor color.RGBA) func(*lnwire.NodeAnnouncement1) {
        return func(nodeAnn *lnwire.NodeAnnouncement1) {
                nodeAnn.RGBColor = newColor
        }
}

// NodeAnnSetFeatures is a functional option that allows updating the features of
// the given node announcement.
func NodeAnnSetFeatures(
        features *lnwire.RawFeatureVector) func(*lnwire.NodeAnnouncement1) {

        return func(nodeAnn *lnwire.NodeAnnouncement1) {
                nodeAnn.Features = features
        }
}

// NodeAnnSetTimestamp is a functional option that sets the timestamp of the
// announcement to the current time, or increments it if the timestamp is
// already in the future.
func NodeAnnSetTimestamp(nodeAnn *lnwire.NodeAnnouncement1) {
        newTimestamp := uint32(time.Now().Unix())
        if newTimestamp <= nodeAnn.Timestamp {
                // Increment the prior value to  ensure the timestamp
                // monotonically increases, otherwise the announcement won't
                // propagate.
                newTimestamp = nodeAnn.Timestamp + 1
        }
        nodeAnn.Timestamp = newTimestamp
}

// SignNodeAnnouncement signs the lnwire.NodeAnnouncement1 provided, which
// should be the most recent, valid update, otherwise the timestamp may not
// monotonically increase from the prior.
func SignNodeAnnouncement(signer lnwallet.MessageSigner,
        keyLoc keychain.KeyLocator, nodeAnn *lnwire.NodeAnnouncement1) error {

        // Create the DER-encoded ECDSA signature over the message digest.
        sig, err := SignAnnouncement(signer, keyLoc, nodeAnn)
        if err != nil {
                return err
        }

        // Parse the DER-encoded signature into a fixed-size 64-byte array.
        nodeAnn.Signature, err = lnwire.NewSigFromSignature(sig)
        return err
}

// ValidateNodeAnn validates the fields and signature of a node announcement.
func ValidateNodeAnn(a *lnwire.NodeAnnouncement1) error {
        err := ValidateNodeAnnFields(a)
        if err != nil {
                return fmt.Errorf("invalid node announcement fields: %w", err)
        }

        return ValidateNodeAnnSignature(a)
}

// ValidateNodeAnnFields validates the fields of a node announcement.
func ValidateNodeAnnFields(a *lnwire.NodeAnnouncement1) error {
        // Check that it only has at most one DNS address.
        hasDNSAddr := false
        for _, addr := range a.Addresses {
                dnsAddr, ok := addr.(*lnwire.DNSAddress)
                if !ok {
                        continue
                }
                if hasDNSAddr {
                        return errors.New("node announcement contains " +
                                "multiple DNS addresses. Only one is allowed")
                }

                hasDNSAddr = true

                err := lnwire.ValidateDNSAddr(dnsAddr.Hostname, dnsAddr.Port)
                if err != nil {
                        return err
                }
        }

        return nil
}

// ValidateNodeAnnSignature validates the node announcement by ensuring that the
// attached signature is needed a signature of the node announcement under the
// specified node public key.
func ValidateNodeAnnSignature(a *lnwire.NodeAnnouncement1) error {
        // Reconstruct the data of announcement which should be covered by the
        // signature so we can verify the signature shortly below
        data, err := a.DataToSign()
        if err != nil {
                return err
        }

        nodeSig, err := a.Signature.ToSignature()
        if err != nil {
                return err
        }
        nodeKey, err := btcec.ParsePubKey(a.NodeID[:])
        if err != nil {
                return err
        }

        // Finally ensure that the passed signature is valid, if not we'll
        // return an error so this node announcement can be rejected.
        dataHash := chainhash.DoubleHashB(data)
        if !nodeSig.Verify(dataHash, nodeKey) {
                var msgBuf bytes.Buffer
                if _, err := lnwire.WriteMessage(&msgBuf, a, 0); err != nil {
                        return err
                }

                return fmt.Errorf("signature on NodeAnnouncement1(%x) is "+
                        "invalid: %x", nodeKey.SerializeCompressed(),
                        msgBuf.Bytes())
        }

        return nil
}

1	package netann
2
3	import (
4	"bytes"
5	"errors"
6	"fmt"
7	"image/color"
8	"net"
9	"time"
10
11	"github.com/btcsuite/btcd/btcec/v2"
12	"github.com/btcsuite/btcd/chaincfg/chainhash"
13	"github.com/lightningnetwork/lnd/keychain"
14	"github.com/lightningnetwork/lnd/lnwallet"
15	"github.com/lightningnetwork/lnd/lnwire"
16	)
17
18	// NodeAnnModifier is a closure that makes in-place modifications to an
19	// lnwire.NodeAnnouncement1.
20	type NodeAnnModifier func(*lnwire.NodeAnnouncement1)
21
22	// NodeAnnSetAlias is a functional option that sets the alias of the
23	// given node announcement.
24	func NodeAnnSetAlias(alias lnwire.NodeAlias) func(*lnwire.NodeAnnouncement1) {	3✔
25	return func(nodeAnn *lnwire.NodeAnnouncement1) {	6✔
26	nodeAnn.Alias = alias	3✔
27	}	3✔
28	}
29
30	// NodeAnnSetAddrs is a functional option that allows updating the addresses of
31	// the given node announcement.
32	func NodeAnnSetAddrs(addrs []net.Addr) func(*lnwire.NodeAnnouncement1) {	3✔
33	return func(nodeAnn *lnwire.NodeAnnouncement1) {	6✔
34	nodeAnn.Addresses = addrs	3✔
35	}	3✔
36	}
37
38	// NodeAnnSetColor is a functional option that sets the color of the
39	// given node announcement.
40	func NodeAnnSetColor(newColor color.RGBA) func(*lnwire.NodeAnnouncement1) {	3✔
41	return func(nodeAnn *lnwire.NodeAnnouncement1) {	6✔
42	nodeAnn.RGBColor = newColor	3✔
43	}	3✔
44	}
45
46	// NodeAnnSetFeatures is a functional option that allows updating the features of
47	// the given node announcement.
48	func NodeAnnSetFeatures(
49	features lnwire.RawFeatureVector) func(lnwire.NodeAnnouncement1) {	3✔
50		3✔
51	return func(nodeAnn *lnwire.NodeAnnouncement1) {	6✔
52	nodeAnn.Features = features	3✔
53	}	3✔
54	}
55
56	// NodeAnnSetTimestamp is a functional option that sets the timestamp of the
57	// announcement to the current time, or increments it if the timestamp is
58	// already in the future.
59	func NodeAnnSetTimestamp(nodeAnn *lnwire.NodeAnnouncement1) {	3✔
60	newTimestamp := uint32(time.Now().Unix())	3✔
61	if newTimestamp <= nodeAnn.Timestamp {	6✔
62	// Increment the prior value to ensure the timestamp	3✔
63	// monotonically increases, otherwise the announcement won't	3✔
64	// propagate.	3✔
65	newTimestamp = nodeAnn.Timestamp + 1	3✔
66	}	3✔
67	nodeAnn.Timestamp = newTimestamp	3✔
68	}
69
70	// SignNodeAnnouncement signs the lnwire.NodeAnnouncement1 provided, which
71	// should be the most recent, valid update, otherwise the timestamp may not
72	// monotonically increase from the prior.
73	func SignNodeAnnouncement(signer lnwallet.MessageSigner,
74	keyLoc keychain.KeyLocator, nodeAnn *lnwire.NodeAnnouncement1) error {	3✔
75		3✔
76	// Create the DER-encoded ECDSA signature over the message digest.	3✔
77	sig, err := SignAnnouncement(signer, keyLoc, nodeAnn)	3✔
78	if err != nil {	3✔
79	return err	×
80	}	×
81
82	// Parse the DER-encoded signature into a fixed-size 64-byte array.
83	nodeAnn.Signature, err = lnwire.NewSigFromSignature(sig)	3✔
84	return err	3✔
85	}
86
87	// ValidateNodeAnn validates the fields and signature of a node announcement.
88	func ValidateNodeAnn(a *lnwire.NodeAnnouncement1) error {	3✔
89	err := ValidateNodeAnnFields(a)	3✔
90	if err != nil {	3✔
91	return fmt.Errorf("invalid node announcement fields: %w", err)	×
92	}	×
93
94	return ValidateNodeAnnSignature(a)	3✔
95	}
96
97	// ValidateNodeAnnFields validates the fields of a node announcement.
98	func ValidateNodeAnnFields(a *lnwire.NodeAnnouncement1) error {	3✔
99	// Check that it only has at most one DNS address.	3✔
100	hasDNSAddr := false	3✔
101	for _, addr := range a.Addresses {	6✔
102	dnsAddr, ok := addr.(*lnwire.DNSAddress)	3✔
103	if !ok {	6✔
104	continue	3✔
105	}
106	if hasDNSAddr {	×
107	return errors.New("node announcement contains " +	×
108	"multiple DNS addresses. Only one is allowed")	×
109	}	×
110
111	hasDNSAddr = true	×
112		×
113	err := lnwire.ValidateDNSAddr(dnsAddr.Hostname, dnsAddr.Port)	×
114	if err != nil {	×
115	return err	×
116	}	×
117	}
118
119	return nil	3✔
120	}
121
122	// ValidateNodeAnnSignature validates the node announcement by ensuring that the
123	// attached signature is needed a signature of the node announcement under the
124	// specified node public key.
125	func ValidateNodeAnnSignature(a *lnwire.NodeAnnouncement1) error {	3✔
126	// Reconstruct the data of announcement which should be covered by the	3✔
127	// signature so we can verify the signature shortly below	3✔
128	data, err := a.DataToSign()	3✔
129	if err != nil {	3✔
UNCOV 130	return err	×
UNCOV 131	}	×
132
133	nodeSig, err := a.Signature.ToSignature()	3✔
134	if err != nil {	3✔
135	return err	×
136	}	×
137	nodeKey, err := btcec.ParsePubKey(a.NodeID[:])	3✔
138	if err != nil {	3✔
139	return err	×
140	}	×
141
142	// Finally ensure that the passed signature is valid, if not we'll
143	// return an error so this node announcement can be rejected.
144	dataHash := chainhash.DoubleHashB(data)	3✔
145	if !nodeSig.Verify(dataHash, nodeKey) {	3✔
146	var msgBuf bytes.Buffer	×
147	if _, err := lnwire.WriteMessage(&msgBuf, a, 0); err != nil {	×
148	return err	×
149	}	×
150
151	return fmt.Errorf("signature on NodeAnnouncement1(%x) is "+	×
152	"invalid: %x", nodeKey.SerializeCompressed(),	×
153	msgBuf.Bytes())	×
154	}
155
156	return nil	3✔
157	}

lightningnetwork / lnd / 19027031130

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