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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, keys []*openpgp.KeyRing) (signature, signed string, err error) {
signature, signed, err = commit.ExtractSignature()
if err == nil {
for _, keyring := range keys {
_, 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 scorsh
// commands
// fixme: we don't have just one keyring here....
func walk_commits(msg SCORSHmsg, w *SCORSHworker) error {
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 SCORSHerr(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 SCORSHerr(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 SCORSHerr(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))
// We should look for scorsh-tags, and if the commit has any,
// check if it can be verified by any of the keyrings associated
// with the scorsh-tag
//signature, signed, err := check_signature(commit, &keyring)
//_, _, err := check_signature(commit, w.keys)
//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 SCORSHerr(SCORSH_ERR_NO_COMMIT)
}
}
return nil
}
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