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Code

Allow addition of gpg keyring with multiple keys (#12487)

Browse Source 
Related #6778

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: Lauris BH <lauris@nix.lv>
This commit is contained in:
zeripath 2020-08-21 11:45:50 +01:00 committed by GitHub
parent ae23bbdae3
commit 7c2cf236f8
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 86 additions and 68 deletions
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128
models/gpg_key.go
View File

@ -106,12 +106,12 @@ func GetGPGImportByKeyID(keyID string) (*GPGKeyImport, error) {
// checkArmoredGPGKeyString checks if the given key string is a valid GPG armored key.
// The function returns the actual public key on success
func checkArmoredGPGKeyString(content string) (*openpgp.Entity, error) {
func checkArmoredGPGKeyString(content string) (openpgp.EntityList, error) {
list, err := openpgp.ReadArmoredKeyRing(strings.NewReader(content))
if err != nil {
return nil, ErrGPGKeyParsing{err}
}
return list[0], nil
return list, nil
}
//addGPGKey add key, import and subkeys to database
@ -152,38 +152,40 @@ func addGPGSubKey(e Engine, key *GPGKey) (err error) {
}
// AddGPGKey adds new public key to database.
func AddGPGKey(ownerID int64, content string) (*GPGKey, error) {
ekey, err := checkArmoredGPGKeyString(content)
func AddGPGKey(ownerID int64, content string) ([]*GPGKey, error) {
ekeys, err := checkArmoredGPGKeyString(content)
if err != nil {
return nil, err
}
// Key ID cannot be duplicated.
has, err := x.Where("key_id=?", ekey.PrimaryKey.KeyIdString()).
Get(new(GPGKey))
if err != nil {
return nil, err
} else if has {
return nil, ErrGPGKeyIDAlreadyUsed{ekey.PrimaryKey.KeyIdString()}
}
//Get DB session
sess := x.NewSession()
defer sess.Close()
if err = sess.Begin(); err != nil {
return nil, err
}
keys := make([]*GPGKey, 0, len(ekeys))
for _, ekey := range ekeys {
// Key ID cannot be duplicated.
has, err := sess.Where("key_id=?", ekey.PrimaryKey.KeyIdString()).
Get(new(GPGKey))
if err != nil {
return nil, err
} else if has {
return nil, ErrGPGKeyIDAlreadyUsed{ekey.PrimaryKey.KeyIdString()}
}
key, err := parseGPGKey(ownerID, ekey)
if err != nil {
return nil, err
//Get DB session
key, err := parseGPGKey(ownerID, ekey)
if err != nil {
return nil, err
}
if err = addGPGKey(sess, key, content); err != nil {
return nil, err
}
keys = append(keys, key)
}
if err = addGPGKey(sess, key, content); err != nil {
return nil, err
}
return key, sess.Commit()
return keys, sess.Commit()
}
//base64EncPubKey encode public key content to base 64
@ -221,7 +223,11 @@ func GPGKeyToEntity(k *GPGKey) (*openpgp.Entity, error) {
if err != nil {
return nil, err
}
return checkArmoredGPGKeyString(impKey.Content)
keys, err := checkArmoredGPGKeyString(impKey.Content)
if err != nil {
return nil, err
}
return keys[0], err
}
//parseSubGPGKey parse a sub Key
@ -761,7 +767,7 @@ func verifyWithGPGSettings(gpgSettings *git.GPGSettings, sig *packet.Signature,
}
// Otherwise we have to parse the key
ekey, err := checkArmoredGPGKeyString(gpgSettings.PublicKeyContent)
ekeys, err := checkArmoredGPGKeyString(gpgSettings.PublicKeyContent)
if err != nil {
log.Error("Unable to get default signing key: %v", err)
return &CommitVerification{
@ -770,22 +776,9 @@ func verifyWithGPGSettings(gpgSettings *git.GPGSettings, sig *packet.Signature,
Reason: "gpg.error.generate_hash",
}
}
pubkey := ekey.PrimaryKey
content, err := base64EncPubKey(pubkey)
if err != nil {
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
k := &GPGKey{
Content: content,
CanSign: pubkey.CanSign(),
KeyID: pubkey.KeyIdString(),
}
for _, subKey := range ekey.Subkeys {
content, err := base64EncPubKey(subKey.PublicKey)
for _, ekey := range ekeys {
pubkey := ekey.PrimaryKey
content, err := base64EncPubKey(pubkey)
if err != nil {
return &CommitVerification{
CommittingUser: committer,
@ -793,25 +786,40 @@ func verifyWithGPGSettings(gpgSettings *git.GPGSettings, sig *packet.Signature,
Reason: "gpg.error.generate_hash",
}
}
k.SubsKey = append(k.SubsKey, &GPGKey{
k := &GPGKey{
Content: content,
CanSign: subKey.PublicKey.CanSign(),
KeyID: subKey.PublicKey.KeyIdString(),
})
}
if commitVerification := hashAndVerifyWithSubKeys(sig, payload, k, committer, &User{
Name: gpgSettings.Name,
Email: gpgSettings.Email,
}, gpgSettings.Email); commitVerification != nil {
return commitVerification
}
if keyID == k.KeyID {
// This is a bad situation ... We have a key id that matches our default key but the signature doesn't match.
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Warning: true,
Reason: BadSignature,
CanSign: pubkey.CanSign(),
KeyID: pubkey.KeyIdString(),
}
for _, subKey := range ekey.Subkeys {
content, err := base64EncPubKey(subKey.PublicKey)
if err != nil {
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
k.SubsKey = append(k.SubsKey, &GPGKey{
Content: content,
CanSign: subKey.PublicKey.CanSign(),
KeyID: subKey.PublicKey.KeyIdString(),
})
}
if commitVerification := hashAndVerifyWithSubKeys(sig, payload, k, committer, &User{
Name: gpgSettings.Name,
Email: gpgSettings.Email,
}, gpgSettings.Email); commitVerification != nil {
return commitVerification
}
if keyID == k.KeyID {
// This is a bad situation ... We have a key id that matches our default key but the signature doesn't match.
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Warning: true,
Reason: BadSignature,
}
}
}
return nil

10
models/gpg_key_test.go
View File

@ -102,7 +102,8 @@ Av844q/BfRuVsJsK1NDNG09LC30B0l3LKBqlrRmRTUMHtgchdX2dY+p7GPOoSzlR
MkM/fdpyc2hY7Dl/+qFmN5MG5yGmMpQcX+RNNR222ibNC1D3wg==
=i9b7
-----END PGP PUBLIC KEY BLOCK-----`
ekey, err := checkArmoredGPGKeyString(testGPGArmor)
keys, err := checkArmoredGPGKeyString(testGPGArmor)
ekey := keys[0]
assert.NoError(t, err, "Could not parse a valid GPG armored key", ekey)
pubkey := ekey.PrimaryKey
@ -219,9 +220,9 @@ Q0KHb+QcycSgbDx0ZAvdIacuKvBBcbxrsmFUI4LR+oIup0G9gUc0roPvr014jYQL
=zHo9
-----END PGP PUBLIC KEY BLOCK-----`
key, err := AddGPGKey(1, testEmailWithUpperCaseLetters)
keys, err := AddGPGKey(1, testEmailWithUpperCaseLetters)
assert.NoError(t, err)
key := keys[0]
if assert.Len(t, key.Emails, 1) {
assert.Equal(t, "user1@example.com", key.Emails[0].Email)
}
@ -371,8 +372,9 @@ epiDVQ==
=VSKJ
-----END PGP PUBLIC KEY BLOCK-----
`
ekey, err := checkArmoredGPGKeyString(testIssue6599)
keys, err := checkArmoredGPGKeyString(testIssue6599)
assert.NoError(t, err)
ekey := keys[0]
expire := getExpiryTime(ekey)
assert.Equal(t, time.Unix(1586105389, 0), expire)
}

4
routers/api/v1/user/gpg_key.go
View File

@ -118,12 +118,12 @@ func GetGPGKey(ctx *context.APIContext) {
// CreateUserGPGKey creates new GPG key to given user by ID.
func CreateUserGPGKey(ctx *context.APIContext, form api.CreateGPGKeyOption, uid int64) {
key, err := models.AddGPGKey(uid, form.ArmoredKey)
keys, err := models.AddGPGKey(uid, form.ArmoredKey)
if err != nil {
HandleAddGPGKeyError(ctx, err)
return
}
ctx.JSON(http.StatusCreated, convert.ToGPGKey(key))
ctx.JSON(http.StatusCreated, convert.ToGPGKey(keys[0]))
}
// swagger:parameters userCurrentPostGPGKey

12
routers/user/setting/keys.go
View File

@ -41,7 +41,7 @@ func KeysPost(ctx *context.Context, form auth.AddKeyForm) {
}
switch form.Type {
case "gpg":
key, err := models.AddGPGKey(ctx.User.ID, form.Content)
keys, err := models.AddGPGKey(ctx.User.ID, form.Content)
if err != nil {
ctx.Data["HasGPGError"] = true
switch {
@ -63,7 +63,15 @@ func KeysPost(ctx *context.Context, form auth.AddKeyForm) {
}
return
}
ctx.Flash.Success(ctx.Tr("settings.add_gpg_key_success", key.KeyID))
keyIDs := ""
for _, key := range keys {
keyIDs += key.KeyID
keyIDs += ", "
}
if len(keyIDs) > 0 {
keyIDs = keyIDs[:len(keyIDs)-2]
}
ctx.Flash.Success(ctx.Tr("settings.add_gpg_key_success", keyIDs))
ctx.Redirect(setting.AppSubURL + "/user/settings/keys")
case "ssh":
content, err := models.CheckPublicKeyString(form.Content)