mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-11-21 08:31:27 -05:00
cd19564acc
This is, in large part, a refactoring: we rename `CommitVerification` to `ObjectVerification`, and adjust `ParseObjectWithSignature` (previously `ParseCommitWithSignature`) to work on an object, rather than a commit. This in turn, lets us implement `ParseTagWithSignature` on top of it, so commit & tag signature verification will share most of the code. Work sponsored by @glts. Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
85 lines
2.4 KiB
Go
85 lines
2.4 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package asymkey
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"code.gitea.io/gitea/models/db"
|
|
user_model "code.gitea.io/gitea/models/user"
|
|
"code.gitea.io/gitea/modules/log"
|
|
|
|
"github.com/42wim/sshsig"
|
|
)
|
|
|
|
// ParseObjectWithSSHSignature check if signature is good against keystore.
|
|
func ParseObjectWithSSHSignature(ctx context.Context, c *GitObject, committer *user_model.User) *ObjectVerification {
|
|
// Now try to associate the signature with the committer, if present
|
|
if committer.ID != 0 {
|
|
keys, err := db.Find[PublicKey](ctx, FindPublicKeyOptions{
|
|
OwnerID: committer.ID,
|
|
NotKeytype: KeyTypePrincipal,
|
|
})
|
|
if err != nil { // Skipping failed to get ssh keys of user
|
|
log.Error("ListPublicKeys: %v", err)
|
|
return &ObjectVerification{
|
|
CommittingUser: committer,
|
|
Verified: false,
|
|
Reason: "gpg.error.failed_retrieval_gpg_keys",
|
|
}
|
|
}
|
|
|
|
committerEmailAddresses, err := user_model.GetEmailAddresses(ctx, committer.ID)
|
|
if err != nil {
|
|
log.Error("GetEmailAddresses: %v", err)
|
|
}
|
|
|
|
// Add the noreply email address as verified address.
|
|
committerEmailAddresses = append(committerEmailAddresses, &user_model.EmailAddress{
|
|
IsActivated: true,
|
|
Email: committer.GetPlaceholderEmail(),
|
|
})
|
|
|
|
activated := false
|
|
for _, e := range committerEmailAddresses {
|
|
if e.IsActivated && strings.EqualFold(e.Email, c.Committer.Email) {
|
|
activated = true
|
|
break
|
|
}
|
|
}
|
|
|
|
for _, k := range keys {
|
|
if k.Verified && activated {
|
|
commitVerification := verifySSHObjectVerification(c.Signature.Signature, c.Signature.Payload, k, committer, committer, c.Committer.Email)
|
|
if commitVerification != nil {
|
|
return commitVerification
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return &ObjectVerification{
|
|
CommittingUser: committer,
|
|
Verified: false,
|
|
Reason: NoKeyFound,
|
|
}
|
|
}
|
|
|
|
func verifySSHObjectVerification(sig, payload string, k *PublicKey, committer, signer *user_model.User, email string) *ObjectVerification {
|
|
if err := sshsig.Verify(bytes.NewBuffer([]byte(payload)), []byte(sig), []byte(k.Content), "git"); err != nil {
|
|
return nil
|
|
}
|
|
|
|
return &ObjectVerification{ // Everything is ok
|
|
CommittingUser: committer,
|
|
Verified: true,
|
|
Reason: fmt.Sprintf("%s / %s", signer.Name, k.Fingerprint),
|
|
SigningUser: signer,
|
|
SigningSSHKey: k,
|
|
SigningEmail: email,
|
|
}
|
|
}
|