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Monorepo for Tangled
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3.0 kB · 118 lines
Go
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119package commitverify
import ( "log"
"github.com/go-git/go-git/v5/plumbing/object" "tangled.org/core/appview/db" "tangled.org/core/appview/models" "tangled.org/core/crypto" "tangled.org/core/types")
type verifiedCommit struct { fingerprint string hash string}
type VerifiedCommits map[verifiedCommit]struct{}
func (vcs VerifiedCommits) IsVerified(hash string) bool { for vc := range vcs { if vc.hash == hash { return true } } return false}
func (vcs VerifiedCommits) Fingerprint(hash string) string { for vc := range vcs { if vc.hash == hash { return vc.fingerprint } } return ""}
func GetVerifiedObjectCommits(e db.Execer, emailToDid map[string]string, commits []*object.Commit) (VerifiedCommits, error) { ndCommits := []types.NiceDiff{} for _, commit := range commits { ndCommits = append(ndCommits, ObjectCommitToNiceDiff(commit)) } return GetVerifiedCommits(e, emailToDid, ndCommits)}
func GetVerifiedCommits(e db.Execer, emailToDid map[string]string, ndCommits []types.NiceDiff) (VerifiedCommits, error) { vcs := VerifiedCommits{}
didPubkeyCache := make(map[string][]models.PublicKey)
for _, commit := range ndCommits { c := commit.Commit
committerEmail := c.Committer.Email if did, exists := emailToDid[committerEmail]; exists { // check if we've already fetched public keys for this did pubKeys, ok := didPubkeyCache[did] if !ok { // fetch and cache public keys keys, err := db.GetPublicKeysForDid(e, did) if err != nil { log.Printf("failed to fetch pubkey for %s: %v", committerEmail, err) continue } pubKeys = keys didPubkeyCache[did] = pubKeys }
// try to verify with any associated pubkeys for _, pk := range pubKeys { if _, ok := crypto.VerifyCommitSignature(pk.Key, commit); ok {
fp, err := crypto.SSHFingerprint(pk.Key) if err != nil { log.Println("error computing ssh fingerprint:", err) }
vc := verifiedCommit{fingerprint: fp, hash: c.This} vcs[vc] = struct{}{} break } }
} }
return vcs, nil}
// ObjectCommitToNiceDiff is a compatibility function to convert a// commit object into a NiceDiff structure.func ObjectCommitToNiceDiff(c *object.Commit) types.NiceDiff { var niceDiff types.NiceDiff
// set commit information niceDiff.Commit.Message = c.Message niceDiff.Commit.Author = c.Author niceDiff.Commit.This = c.Hash.String() niceDiff.Commit.Committer = c.Committer niceDiff.Commit.Tree = c.TreeHash.String() niceDiff.Commit.PGPSignature = c.PGPSignature
changeId, ok := c.ExtraHeaders["change-id"] if ok { niceDiff.Commit.ChangedId = string(changeId) }
// set parent hash if available if len(c.ParentHashes) > 0 { niceDiff.Commit.Parent = c.ParentHashes[0].String() }
// XXX: Stats and Diff fields are typically populated // after fetching the actual diff information, which isn't // directly available in the commit object itself.
return niceDiff}