Disable SSH key deletion of externally managed Keys (#13985)

* Disable SSH key addition and deletion when externally managed

When a user has a login source which has SSH key management
key addition and deletion using the UI should be disabled.

Fix #13983

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

* Make only externally managed keys disabled

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

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
zeripath 2020-12-26 04:24:47 +00:00 committed by GitHub
parent a19447aed1
commit ad1164f73b
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 125 additions and 21 deletions

View File

@ -665,6 +665,82 @@ func deletePublicKeys(e Engine, keyIDs ...int64) error {
return err
}
// PublicKeysAreExternallyManaged returns whether the provided KeyID represents an externally managed Key
func PublicKeysAreExternallyManaged(keys []*PublicKey) ([]bool, error) {
sources := make([]*LoginSource, 0, 5)
externals := make([]bool, len(keys))
keyloop:
for i, key := range keys {
if key.LoginSourceID == 0 {
externals[i] = false
continue keyloop
}
var source *LoginSource
sourceloop:
for _, s := range sources {
if s.ID == key.LoginSourceID {
source = s
break sourceloop
}
}
if source == nil {
var err error
source, err = GetLoginSourceByID(key.LoginSourceID)
if err != nil {
if IsErrLoginSourceNotExist(err) {
externals[i] = false
sources[i] = &LoginSource{
ID: key.LoginSourceID,
}
continue keyloop
}
return nil, err
}
}
ldapSource := source.LDAP()
if ldapSource != nil &&
source.IsSyncEnabled &&
(source.Type == LoginLDAP || source.Type == LoginDLDAP) &&
len(strings.TrimSpace(ldapSource.AttributeSSHPublicKey)) > 0 {
// Disable setting SSH keys for this user
externals[i] = true
}
}
return externals, nil
}
// PublicKeyIsExternallyManaged returns whether the provided KeyID represents an externally managed Key
func PublicKeyIsExternallyManaged(id int64) (bool, error) {
key, err := GetPublicKeyByID(id)
if err != nil {
return false, err
}
if key.LoginSourceID == 0 {
return false, nil
}
source, err := GetLoginSourceByID(key.LoginSourceID)
if err != nil {
if IsErrLoginSourceNotExist(err) {
return false, nil
}
return false, err
}
ldapSource := source.LDAP()
if ldapSource != nil &&
source.IsSyncEnabled &&
(source.Type == LoginLDAP || source.Type == LoginDLDAP) &&
len(strings.TrimSpace(ldapSource.AttributeSSHPublicKey)) > 0 {
// Disable setting SSH keys for this user
return true, nil
}
return false, nil
}
// DeletePublicKey deletes SSH key information both in database and authorized_keys file.
func DeletePublicKey(doer *User, id int64) (err error) {
key, err := GetPublicKeyByID(id)

View File

@ -556,6 +556,7 @@ principal_state_desc = This principal has been used in the last 7 days
show_openid = Show on profile
hide_openid = Hide from profile
ssh_disabled = SSH Disabled
ssh_externally_managed = This SSH key is externally managed for this user
manage_social = Manage Associated Social Accounts
social_desc = These social accounts are linked to your Gitea account. Make sure you recognize all of them as they can be used to sign in to your Gitea account.
unbind = Unlink

View File

@ -267,7 +267,16 @@ func DeletePublicKey(ctx *context.APIContext) {
// "404":
// "$ref": "#/responses/notFound"
if err := models.DeletePublicKey(ctx.User, ctx.ParamsInt64(":id")); err != nil {
id := ctx.ParamsInt64(":id")
externallyManaged, err := models.PublicKeyIsExternallyManaged(id)
if err != nil {
ctx.Error(http.StatusInternalServerError, "PublicKeyIsExternallyManaged", err)
}
if externallyManaged {
ctx.Error(http.StatusForbidden, "", "SSH Key is externally managed for this user")
}
if err := models.DeletePublicKey(ctx.User, id); err != nil {
if models.IsErrKeyNotExist(err) {
ctx.NotFound()
} else if models.IsErrKeyAccessDenied(err) {

View File

@ -160,7 +160,18 @@ func DeleteKey(ctx *context.Context) {
ctx.Flash.Success(ctx.Tr("settings.gpg_key_deletion_success"))
}
case "ssh":
if err := models.DeletePublicKey(ctx.User, ctx.QueryInt64("id")); err != nil {
keyID := ctx.QueryInt64("id")
external, err := models.PublicKeyIsExternallyManaged(keyID)
if err != nil {
ctx.ServerError("sshKeysExternalManaged", err)
return
}
if external {
ctx.Flash.Error(ctx.Tr("setting.ssh_externally_managed"))
ctx.Redirect(setting.AppSubURL + "/user/settings/keys")
return
}
if err := models.DeletePublicKey(ctx.User, keyID); err != nil {
ctx.Flash.Error("DeletePublicKey: " + err.Error())
} else {
ctx.Flash.Success(ctx.Tr("settings.ssh_key_deletion_success"))
@ -188,6 +199,13 @@ func loadKeysData(ctx *context.Context) {
}
ctx.Data["Keys"] = keys
externalKeys, err := models.PublicKeysAreExternallyManaged(keys)
if err != nil {
ctx.ServerError("ListPublicKeys", err)
return
}
ctx.Data["ExternalKeys"] = externalKeys
gpgkeys, err := models.ListGPGKeys(ctx.User.ID, models.ListOptions{})
if err != nil {
ctx.ServerError("ListGPGKeys", err)

View File

@ -1,7 +1,7 @@
<h4 class="ui top attached header">
{{.i18n.Tr "settings.manage_ssh_keys"}}
<div class="ui right">
{{if not .DisableSSH}}
{{if not .DisableSSH }}
<div class="ui blue tiny show-panel button" data-panel="#add-ssh-key-panel">{{.i18n.Tr "settings.add_key"}}</div>
{{else}}
<div class="ui blue tiny button disabled">{{.i18n.Tr "settings.ssh_disabled"}}</div>
@ -13,10 +13,10 @@
<div class="item">
{{.i18n.Tr "settings.ssh_desc"}}
</div>
{{range .Keys}}
{{range $index, $key := .Keys}}
<div class="item">
<div class="right floated content">
<button class="ui red tiny button delete-button" id="delete-ssh" data-url="{{$.Link}}/delete?type=ssh" data-id="{{.ID}}">
<button class="ui red tiny button delete-button{{if index $.ExternalKeys $index}} disabled{{end}}" id="delete-ssh" data-url="{{$.Link}}/delete?type=ssh" data-id="{{.ID}}"{{if index $.ExternalKeys $index}} title="{{$.i18n.Tr "settings.ssh_externally_managed"}}"{{end}}>
{{$.i18n.Tr "settings.delete_key"}}
</button>
</div>