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	Synchronize SSH keys on login with LDAP + Fix SQLite deadlock on ldap ssh key deletion (#5557)
* Synchronize SSH keys on login with LDAP * BUG: Fix hang on sqlite during LDAP key deletion
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		@@ -393,7 +393,13 @@ func LoginViaLDAP(user *User, login, password string, source *LoginSource, autoR
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		return nil, ErrUserNotExist{0, login, 0}
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	}
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	var isAttributeSSHPublicKeySet = len(strings.TrimSpace(source.LDAP().AttributeSSHPublicKey)) > 0
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	if !autoRegister {
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		if isAttributeSSHPublicKeySet && synchronizeLdapSSHPublicKeys(user, source, sr.SSHPublicKey) {
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			RewriteAllPublicKeys()
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		}
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		return user, nil
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	}
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@@ -421,7 +427,14 @@ func LoginViaLDAP(user *User, login, password string, source *LoginSource, autoR
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		IsActive:    true,
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		IsAdmin:     sr.IsAdmin,
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	}
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	return user, CreateUser(user)
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	err := CreateUser(user)
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	if err == nil && isAttributeSSHPublicKeySet && addLdapSSHPublicKeys(user, source, sr.SSHPublicKey) {
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		RewriteAllPublicKeys()
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	}
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	return user, err
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}
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//   _________   __________________________
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@@ -451,11 +451,9 @@ func GetPublicKeyByID(keyID int64) (*PublicKey, error) {
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	return key, nil
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}
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// SearchPublicKeyByContent searches content as prefix (leak e-mail part)
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// and returns public key found.
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func SearchPublicKeyByContent(content string) (*PublicKey, error) {
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func searchPublicKeyByContentWithEngine(e Engine, content string) (*PublicKey, error) {
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	key := new(PublicKey)
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	has, err := x.
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	has, err := e.
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		Where("content like ?", content+"%").
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		Get(key)
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	if err != nil {
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@@ -466,6 +464,12 @@ func SearchPublicKeyByContent(content string) (*PublicKey, error) {
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	return key, nil
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}
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// SearchPublicKeyByContent searches content as prefix (leak e-mail part)
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// and returns public key found.
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func SearchPublicKeyByContent(content string) (*PublicKey, error) {
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	return searchPublicKeyByContentWithEngine(x, content)
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}
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// SearchPublicKey returns a list of public keys matching the provided arguments.
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func SearchPublicKey(uid int64, fingerprint string) ([]*PublicKey, error) {
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	keys := make([]*PublicKey, 0, 5)
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@@ -1402,7 +1402,7 @@ func deleteKeysMarkedForDeletion(keys []string) (bool, error) {
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	// Delete keys marked for deletion
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	var sshKeysNeedUpdate bool
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	for _, KeyToDelete := range keys {
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		key, err := SearchPublicKeyByContent(KeyToDelete)
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		key, err := searchPublicKeyByContentWithEngine(sess, KeyToDelete)
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		if err != nil {
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			log.Error(4, "SearchPublicKeyByContent: %v", err)
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			continue
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@@ -1421,7 +1421,8 @@ func deleteKeysMarkedForDeletion(keys []string) (bool, error) {
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	return sshKeysNeedUpdate, nil
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}
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func addLdapSSHPublicKeys(s *LoginSource, usr *User, SSHPublicKeys []string) bool {
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// addLdapSSHPublicKeys add a users public keys. Returns true if there are changes.
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func addLdapSSHPublicKeys(usr *User, s *LoginSource, SSHPublicKeys []string) bool {
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	var sshKeysNeedUpdate bool
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	for _, sshKey := range SSHPublicKeys {
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		_, _, _, _, err := ssh.ParseAuthorizedKey([]byte(sshKey))
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@@ -1440,7 +1441,8 @@ func addLdapSSHPublicKeys(s *LoginSource, usr *User, SSHPublicKeys []string) boo
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	return sshKeysNeedUpdate
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}
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func synchronizeLdapSSHPublicKeys(s *LoginSource, SSHPublicKeys []string, usr *User) bool {
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// synchronizeLdapSSHPublicKeys updates a users public keys. Returns true if there are changes.
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func synchronizeLdapSSHPublicKeys(usr *User, s *LoginSource, SSHPublicKeys []string) bool {
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	var sshKeysNeedUpdate bool
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	log.Trace("synchronizeLdapSSHPublicKeys[%s]: Handling LDAP Public SSH Key synchronization for user %s", s.Name, usr.Name)
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@@ -1479,7 +1481,7 @@ func synchronizeLdapSSHPublicKeys(s *LoginSource, SSHPublicKeys []string, usr *U
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			newLdapSSHKeys = append(newLdapSSHKeys, LDAPPublicSSHKey)
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		}
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	}
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	if addLdapSSHPublicKeys(s, usr, newLdapSSHKeys) {
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	if addLdapSSHPublicKeys(usr, s, newLdapSSHKeys) {
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		sshKeysNeedUpdate = true
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	}
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@@ -1581,7 +1583,7 @@ func SyncExternalUsers() {
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						log.Error(4, "SyncExternalUsers[%s]: Error creating user %s: %v", s.Name, su.Username, err)
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					} else if isAttributeSSHPublicKeySet {
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						log.Trace("SyncExternalUsers[%s]: Adding LDAP Public SSH Keys for user %s", s.Name, usr.Name)
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						if addLdapSSHPublicKeys(s, usr, su.SSHPublicKey) {
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						if addLdapSSHPublicKeys(usr, s, su.SSHPublicKey) {
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							sshKeysNeedUpdate = true
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						}
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					}
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@@ -1589,7 +1591,7 @@ func SyncExternalUsers() {
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					existingUsers = append(existingUsers, usr.ID)
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					// Synchronize SSH Public Key if that attribute is set
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					if isAttributeSSHPublicKeySet && synchronizeLdapSSHPublicKeys(s, su.SSHPublicKey, usr) {
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					if isAttributeSSHPublicKeySet && synchronizeLdapSSHPublicKeys(usr, s, su.SSHPublicKey) {
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						sshKeysNeedUpdate = true
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					}
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@@ -247,10 +247,10 @@ func (ls *Source) SearchEntry(name, passwd string, directBind bool) *SearchResul
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		return nil
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	}
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	log.Trace("Fetching attributes '%v', '%v', '%v', '%v' with filter %s and base %s", ls.AttributeUsername, ls.AttributeName, ls.AttributeSurname, ls.AttributeMail, userFilter, userDN)
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	log.Trace("Fetching attributes '%v', '%v', '%v', '%v', '%v' with filter %s and base %s", ls.AttributeUsername, ls.AttributeName, ls.AttributeSurname, ls.AttributeMail, ls.AttributeSSHPublicKey, userFilter, userDN)
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	search := ldap.NewSearchRequest(
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		userDN, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false, userFilter,
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		[]string{ls.AttributeUsername, ls.AttributeName, ls.AttributeSurname, ls.AttributeMail},
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		[]string{ls.AttributeUsername, ls.AttributeName, ls.AttributeSurname, ls.AttributeMail, ls.AttributeSSHPublicKey},
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		nil)
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	sr, err := l.Search(search)
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@@ -271,6 +271,7 @@ func (ls *Source) SearchEntry(name, passwd string, directBind bool) *SearchResul
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	firstname := sr.Entries[0].GetAttributeValue(ls.AttributeName)
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	surname := sr.Entries[0].GetAttributeValue(ls.AttributeSurname)
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	mail := sr.Entries[0].GetAttributeValue(ls.AttributeMail)
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	sshPublicKey := sr.Entries[0].GetAttributeValues(ls.AttributeSSHPublicKey)
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	isAdmin := checkAdmin(l, ls, userDN)
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	if !directBind && ls.AttributesInBind {
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@@ -286,6 +287,7 @@ func (ls *Source) SearchEntry(name, passwd string, directBind bool) *SearchResul
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		Name:         firstname,
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		Surname:      surname,
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		Mail:         mail,
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		SSHPublicKey: sshPublicKey,
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		IsAdmin:      isAdmin,
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	}
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}
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