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lightningnetwork / lnd / 14193549836

01 Apr 2025 10:40AM UTC coverage: 69.046% (+0.007%) from 69.039%
14193549836

Pull #9665

github

web-flow
Merge e8825f209 into b01f4e514
Pull Request #9665: kvdb: bump etcd libs to v3.5.12

133439 of 193262 relevant lines covered (69.05%)

22119.45 hits per line

Source File
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56.67
/macaroons/bake.go
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package macaroons
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import (
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        "bytes"
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        "fmt"
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        "golang.org/x/net/context"
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        "gopkg.in/macaroon-bakery.v2/bakery"
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        "gopkg.in/macaroon.v2"
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)
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// inMemoryRootKeyStore is a simple implementation of bakery.RootKeyStore that
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// stores a single root key in memory.
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type inMemoryRootKeyStore struct {
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        rootKey []byte
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}
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// A compile-time check to ensure that inMemoryRootKeyStore implements
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// bakery.RootKeyStore.
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var _ bakery.RootKeyStore = (*inMemoryRootKeyStore)(nil)
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// Get returns the root key for the given id. If the item is not there, it
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// returns ErrNotFound.
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func (s *inMemoryRootKeyStore) Get(_ context.Context, id []byte) ([]byte,
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        error) {
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        if !bytes.Equal(id, DefaultRootKeyID) {
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                return nil, bakery.ErrNotFound
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        }
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        return s.rootKey, nil
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}
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// RootKey returns the root key to be used for making a new macaroon, and an id
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// that can be used to look it up later with the Get method.
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func (s *inMemoryRootKeyStore) RootKey(context.Context) ([]byte, []byte,
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        error) {
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        return s.rootKey, DefaultRootKeyID, nil
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}
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// BakeFromRootKey creates a new macaroon that is derived from the given root
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// key and permissions.
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func BakeFromRootKey(rootKey []byte,
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        permissions []bakery.Op) (*macaroon.Macaroon, error) {
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        if len(rootKey) != RootKeyLen {
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                return nil, fmt.Errorf("root key must be %d bytes, is %d",
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                        RootKeyLen, len(rootKey))
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        }
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        rootKeyStore := &inMemoryRootKeyStore{
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                rootKey: rootKey,
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        }
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        service, err := NewService(rootKeyStore, "lnd", false)
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        if err != nil {
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                return nil, fmt.Errorf("unable to create service: %w", err)
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        }
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        ctx := context.Background()
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        mac, err := service.NewMacaroon(ctx, DefaultRootKeyID, permissions...)
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        if err != nil {
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                return nil, fmt.Errorf("unable to create macaroon: %w", err)
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        }
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        return mac.M(), nil
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}
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