mirror of
https://github.com/netbirdio/netbird.git
synced 2024-12-14 10:50:45 +01:00
343 lines
10 KiB
Go
343 lines
10 KiB
Go
package server
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import (
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"context"
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"errors"
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"regexp"
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"unicode/utf8"
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"github.com/miekg/dns"
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"github.com/rs/xid"
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nbdns "github.com/netbirdio/netbird/dns"
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"github.com/netbirdio/netbird/management/server/activity"
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nbgroup "github.com/netbirdio/netbird/management/server/group"
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"github.com/netbirdio/netbird/management/server/status"
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)
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const domainPattern = `^(?i)[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,}$`
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// GetNameServerGroup gets a nameserver group object from account and nameserver group IDs
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func (am *DefaultAccountManager) GetNameServerGroup(ctx context.Context, accountID, userID, nsGroupID string) (*nbdns.NameServerGroup, error) {
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user, err := am.Store.GetUserByUserID(ctx, LockingStrengthShare, userID)
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if err != nil {
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return nil, err
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}
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if user.AccountID != accountID {
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return nil, status.NewUserNotPartOfAccountError()
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}
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if user.IsRegularUser() {
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return nil, status.NewAdminPermissionError()
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}
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return am.Store.GetNameServerGroupByID(ctx, LockingStrengthShare, accountID, nsGroupID)
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}
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// CreateNameServerGroup creates and saves a new nameserver group
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func (am *DefaultAccountManager) CreateNameServerGroup(ctx context.Context, accountID string, name, description string, nameServerList []nbdns.NameServer, groups []string, primary bool, domains []string, enabled bool, userID string, searchDomainEnabled bool) (*nbdns.NameServerGroup, error) {
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unlock := am.Store.AcquireWriteLockByUID(ctx, accountID)
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defer unlock()
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user, err := am.Store.GetUserByUserID(ctx, LockingStrengthShare, userID)
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if err != nil {
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return nil, err
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}
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if user.AccountID != accountID {
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return nil, status.NewUserNotPartOfAccountError()
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}
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newNSGroup := &nbdns.NameServerGroup{
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ID: xid.New().String(),
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AccountID: accountID,
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Name: name,
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Description: description,
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NameServers: nameServerList,
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Groups: groups,
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Enabled: enabled,
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Primary: primary,
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Domains: domains,
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SearchDomainsEnabled: searchDomainEnabled,
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}
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var updateAccountPeers bool
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err = am.Store.ExecuteInTransaction(ctx, func(transaction Store) error {
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if err = validateNameServerGroup(ctx, transaction, accountID, newNSGroup); err != nil {
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return err
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}
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updateAccountPeers, err = anyGroupHasPeers(ctx, transaction, accountID, newNSGroup.Groups)
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if err != nil {
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return err
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}
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if err = transaction.IncrementNetworkSerial(ctx, LockingStrengthUpdate, accountID); err != nil {
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return err
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}
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return transaction.SaveNameServerGroup(ctx, LockingStrengthUpdate, newNSGroup)
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})
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if err != nil {
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return nil, err
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}
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am.StoreEvent(ctx, userID, newNSGroup.ID, accountID, activity.NameserverGroupCreated, newNSGroup.EventMeta())
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if updateAccountPeers {
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am.updateAccountPeers(ctx, accountID)
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}
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return newNSGroup.Copy(), nil
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}
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// SaveNameServerGroup saves nameserver group
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func (am *DefaultAccountManager) SaveNameServerGroup(ctx context.Context, accountID, userID string, nsGroupToSave *nbdns.NameServerGroup) error {
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unlock := am.Store.AcquireWriteLockByUID(ctx, accountID)
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defer unlock()
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if nsGroupToSave == nil {
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return status.Errorf(status.InvalidArgument, "nameserver group provided is nil")
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}
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user, err := am.Store.GetUserByUserID(ctx, LockingStrengthShare, userID)
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if err != nil {
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return err
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}
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if user.AccountID != accountID {
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return status.NewUserNotPartOfAccountError()
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}
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var updateAccountPeers bool
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err = am.Store.ExecuteInTransaction(ctx, func(transaction Store) error {
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oldNSGroup, err := transaction.GetNameServerGroupByID(ctx, LockingStrengthShare, accountID, nsGroupToSave.ID)
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if err != nil {
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return err
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}
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nsGroupToSave.AccountID = accountID
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if err = validateNameServerGroup(ctx, transaction, accountID, nsGroupToSave); err != nil {
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return err
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}
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updateAccountPeers, err = areNameServerGroupChangesAffectPeers(ctx, transaction, nsGroupToSave, oldNSGroup)
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if err != nil {
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return err
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}
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if err = transaction.IncrementNetworkSerial(ctx, LockingStrengthUpdate, accountID); err != nil {
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return err
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}
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return transaction.SaveNameServerGroup(ctx, LockingStrengthUpdate, nsGroupToSave)
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})
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if err != nil {
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return err
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}
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am.StoreEvent(ctx, userID, nsGroupToSave.ID, accountID, activity.NameserverGroupUpdated, nsGroupToSave.EventMeta())
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if updateAccountPeers {
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am.updateAccountPeers(ctx, accountID)
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}
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return nil
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}
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// DeleteNameServerGroup deletes nameserver group with nsGroupID
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func (am *DefaultAccountManager) DeleteNameServerGroup(ctx context.Context, accountID, nsGroupID, userID string) error {
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unlock := am.Store.AcquireWriteLockByUID(ctx, accountID)
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defer unlock()
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user, err := am.Store.GetUserByUserID(ctx, LockingStrengthShare, userID)
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if err != nil {
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return err
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}
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if user.AccountID != accountID {
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return status.NewUserNotPartOfAccountError()
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}
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var nsGroup *nbdns.NameServerGroup
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var updateAccountPeers bool
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err = am.Store.ExecuteInTransaction(ctx, func(transaction Store) error {
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nsGroup, err = transaction.GetNameServerGroupByID(ctx, LockingStrengthUpdate, accountID, nsGroupID)
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if err != nil {
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return err
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}
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updateAccountPeers, err = anyGroupHasPeers(ctx, transaction, accountID, nsGroup.Groups)
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if err != nil {
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return err
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}
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if err = transaction.IncrementNetworkSerial(ctx, LockingStrengthUpdate, accountID); err != nil {
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return err
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}
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return transaction.DeleteNameServerGroup(ctx, LockingStrengthUpdate, accountID, nsGroupID)
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})
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if err != nil {
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return err
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}
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am.StoreEvent(ctx, userID, nsGroup.ID, accountID, activity.NameserverGroupDeleted, nsGroup.EventMeta())
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if updateAccountPeers {
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am.updateAccountPeers(ctx, accountID)
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}
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return nil
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}
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// ListNameServerGroups returns a list of nameserver groups from account
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func (am *DefaultAccountManager) ListNameServerGroups(ctx context.Context, accountID string, userID string) ([]*nbdns.NameServerGroup, error) {
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user, err := am.Store.GetUserByUserID(ctx, LockingStrengthShare, userID)
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if err != nil {
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return nil, err
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}
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if user.AccountID != accountID {
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return nil, status.NewUserNotPartOfAccountError()
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}
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if user.IsRegularUser() {
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return nil, status.NewAdminPermissionError()
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}
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return am.Store.GetAccountNameServerGroups(ctx, LockingStrengthShare, accountID)
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}
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func validateNameServerGroup(ctx context.Context, transaction Store, accountID string, nameserverGroup *nbdns.NameServerGroup) error {
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err := validateDomainInput(nameserverGroup.Primary, nameserverGroup.Domains, nameserverGroup.SearchDomainsEnabled)
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if err != nil {
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return err
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}
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err = validateNSList(nameserverGroup.NameServers)
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if err != nil {
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return err
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}
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nsServerGroups, err := transaction.GetAccountNameServerGroups(ctx, LockingStrengthShare, accountID)
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if err != nil {
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return err
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}
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err = validateNSGroupName(nameserverGroup.Name, nameserverGroup.ID, nsServerGroups)
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if err != nil {
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return err
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}
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groups, err := transaction.GetGroupsByIDs(ctx, LockingStrengthShare, accountID, nameserverGroup.Groups)
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if err != nil {
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return err
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}
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return validateGroups(nameserverGroup.Groups, groups)
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}
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// areNameServerGroupChangesAffectPeers checks if the changes in the nameserver group affect the peers.
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func areNameServerGroupChangesAffectPeers(ctx context.Context, transaction Store, newNSGroup, oldNSGroup *nbdns.NameServerGroup) (bool, error) {
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if !newNSGroup.Enabled && !oldNSGroup.Enabled {
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return false, nil
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}
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hasPeers, err := anyGroupHasPeers(ctx, transaction, newNSGroup.AccountID, newNSGroup.Groups)
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if err != nil {
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return false, err
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}
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if hasPeers {
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return true, nil
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}
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return anyGroupHasPeers(ctx, transaction, oldNSGroup.AccountID, oldNSGroup.Groups)
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}
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func validateDomainInput(primary bool, domains []string, searchDomainsEnabled bool) error {
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if !primary && len(domains) == 0 {
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return status.Errorf(status.InvalidArgument, "nameserver group primary status is false and domains are empty,"+
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" it should be primary or have at least one domain")
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}
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if primary && len(domains) != 0 {
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return status.Errorf(status.InvalidArgument, "nameserver group primary status is true and domains are not empty,"+
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" you should set either primary or domain")
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}
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if primary && searchDomainsEnabled {
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return status.Errorf(status.InvalidArgument, "nameserver group primary status is true and search domains is enabled,"+
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" you should not set search domains for primary nameservers")
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}
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for _, domain := range domains {
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if err := validateDomain(domain); err != nil {
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return status.Errorf(status.InvalidArgument, "nameserver group got an invalid domain: %s %q", domain, err)
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}
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}
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return nil
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}
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func validateNSGroupName(name, nsGroupID string, groups []*nbdns.NameServerGroup) error {
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if utf8.RuneCountInString(name) > nbdns.MaxGroupNameChar || name == "" {
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return status.Errorf(status.InvalidArgument, "nameserver group name should be between 1 and %d", nbdns.MaxGroupNameChar)
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}
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for _, nsGroup := range groups {
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if name == nsGroup.Name && nsGroup.ID != nsGroupID {
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return status.Errorf(status.InvalidArgument, "nameserver group with name %s already exist", name)
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}
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}
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return nil
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}
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func validateNSList(list []nbdns.NameServer) error {
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nsListLength := len(list)
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if nsListLength == 0 || nsListLength > 3 {
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return status.Errorf(status.InvalidArgument, "the list of nameservers should be 1 or 3, got %d", len(list))
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}
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return nil
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}
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func validateGroups(list []string, groups map[string]*nbgroup.Group) error {
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if len(list) == 0 {
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return status.Errorf(status.InvalidArgument, "the list of group IDs should not be empty")
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}
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for _, id := range list {
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if id == "" {
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return status.Errorf(status.InvalidArgument, "group ID should not be empty string")
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}
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if _, found := groups[id]; !found {
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return status.Errorf(status.InvalidArgument, "group id %s not found", id)
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}
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}
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return nil
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}
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var domainMatcher = regexp.MustCompile(domainPattern)
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func validateDomain(domain string) error {
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if !domainMatcher.MatchString(domain) {
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return errors.New("domain should consists of only letters, numbers, and hyphens with no leading, trailing hyphens, or spaces")
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}
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labels, valid := dns.IsDomainName(domain)
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if !valid {
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return errors.New("invalid domain name")
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}
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if labels < 2 {
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return errors.New("domain should consists of a minimum of two labels")
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}
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return nil
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}
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