package main import ( "fmt" "github.com/KatolaZ/git2go" "golang.org/x/crypto/openpgp" "os" "strings" "log" ) func CommitToString(commit *git.Commit) string { var ret string ret += fmt.Sprintf("type: %s\n", commit.Type()) ret += fmt.Sprintf("Id: %s\n", commit.Id()) ret += fmt.Sprintf("Author: %s\n", commit.Author()) ret += fmt.Sprintf("Message: %s\n", commit.Message()) ret += fmt.Sprintf("Parent-count: %d\n", commit.ParentCount()) return ret } // FIXME: RETURN THE ENTITY PROVIDED BY THE CHECK, OR nil func check_signature(commit *git.Commit, keyring *openpgp.KeyRing) (signature, signed string, err error) { signature, signed, err = commit.ExtractSignature() if err == nil { _, err_sig := openpgp.CheckArmoredDetachedSignature(*keyring, strings.NewReader(signed), strings.NewReader(signature)) if err_sig == nil { fmt.Printf("Good signature \n") return signature, signed, nil } err = err_sig } return "", "", err } // traverse all the commits between two references, looking for func walk_commits(msg SCORSHmsg, keyring openpgp.KeyRing) int { fmt.Printf("Inside parse_commits\n") reponame := msg.repo old_rev := msg.old_rev new_rev := msg.new_rev repo, err := git.OpenRepository(reponame) if err != nil { fmt.Fprintf(os.Stderr, "Error while opening repository %s (%s)\n", reponame, err) return SCORSH_ERR_NO_REPO } old_rev_oid, err := git.NewOid(old_rev) oldrev_commit, err := repo.LookupCommit(old_rev_oid) if err != nil { fmt.Fprintf(os.Stderr, "Commit: %s does not exist\n", old_rev) return SCORSH_ERR_NO_COMMIT } new_rev_oid, err := git.NewOid(new_rev) newrev_commit, err := repo.LookupCommit(new_rev_oid) if err != nil { fmt.Fprintf(os.Stderr, "Commit: %s does not exist\n", new_rev) return SCORSH_ERR_NO_COMMIT } cur_commit := newrev_commit for cur_commit.Id().String() != oldrev_commit.Id().String() { commit, err := repo.LookupCommit(cur_commit.Id()) if err == nil { fmt.Printf("%s", CommitToString(commit)) //signature, signed, err := check_signature(commit, &keyring) _, _, err := check_signature(commit, &keyring) if err != nil { log.Printf("%s\n", SCORSHErr(SCORSH_ERR_SIGNATURE)) } cur_commit = commit.Parent(0) } else { fmt.Printf("Commit %x not found!\n", cur_commit.Id()) return SCORSH_ERR_NO_COMMIT } } return 0 }