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Add support for ssh commit signing (#17743)

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* Add support for ssh commit signing

* Split out ssh verification to separate file

* Show ssh key fingerprint on commit page

* Update sshsig lib

* Make sure we verify against correct namespace

* Add ssh public key verification via ssh signatures

When adding a public ssh key also validate that this user actually
owns the key by signing a token with the private key.

* Remove some gpg references and make verify key optional

* Fix spaces indentation

* Update options/locale/locale_en-US.ini

Co-authored-by: Gusted <williamzijl7@hotmail.com>

* Update templates/user/settings/keys_ssh.tmpl

Co-authored-by: Gusted <williamzijl7@hotmail.com>

* Update options/locale/locale_en-US.ini

Co-authored-by: Gusted <williamzijl7@hotmail.com>

* Update options/locale/locale_en-US.ini

Co-authored-by: Gusted <williamzijl7@hotmail.com>

* Update models/ssh_key_commit_verification.go

Co-authored-by: Gusted <williamzijl7@hotmail.com>

* Reword ssh/gpg_key_success message

* Change Badsignature to NoKeyFound

* Add sign/verify tests

* Fix upstream api changes to user_model User

* Match exact on SSH signature

* Fix code review remarks

Co-authored-by: Gusted <williamzijl7@hotmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
This commit is contained in:
Wim 2021-12-19 06:37:18 +01:00 • committed by GitHub
parent f1e85622da
commit 6fe756dc93
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
182 changed files with 17554 additions and 15288 deletions
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49
models/asymkey/ssh_key_verify.go Normal file
View file

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// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package asymkey
import (
"bytes"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/modules/log"
"github.com/42wim/sshsig"
)
// VerifySSHKey marks a SSH key as verified
func VerifySSHKey(ownerID int64, fingerprint, token, signature string) (string, error) {
ctx, committer, err := db.TxContext()
if err != nil {
return "", err
}
defer committer.Close()
key := new(PublicKey)
has, err := db.GetEngine(ctx).Where("owner_id = ? AND fingerprint = ?", ownerID, fingerprint).Get(key)
if err != nil {
return "", err
} else if !has {
return "", ErrKeyNotExist{}
}
if err := sshsig.Verify(bytes.NewBuffer([]byte(token)), []byte(signature), []byte(key.Content), "gitea"); err != nil {
log.Error("Unable to validate token signature. Error: %v", err)
return "", ErrSSHInvalidTokenSignature{
Fingerprint: key.Fingerprint,
}
}
key.Verified = true
if _, err := db.GetEngine(ctx).ID(key.ID).Cols("verified").Update(key); err != nil {
return "", err
}
if err := committer.Commit(); err != nil {
return "", err
}
return key.Fingerprint, nil
}