mirror of
https://github.com/netbirdio/netbird.git
synced 2024-11-27 02:24:30 +01:00
288 lines
8.8 KiB
Go
288 lines
8.8 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.IsAdminOrServiceUser() || user.AccountID != accountID {
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return nil, status.Errorf(status.PermissionDenied, "only users with admin power can view name server groups")
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}
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return am.Store.GetNameServerGroupByID(ctx, LockingStrengthShare, nsGroupID, accountID)
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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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account, err := am.Store.GetAccount(ctx, accountID)
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if err != nil {
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return nil, err
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}
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newNSGroup := &nbdns.NameServerGroup{
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ID: xid.New().String(),
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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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err = validateNameServerGroup(false, newNSGroup, account)
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if err != nil {
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return nil, err
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}
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if account.NameServerGroups == nil {
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account.NameServerGroups = make(map[string]*nbdns.NameServerGroup)
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}
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account.NameServerGroups[newNSGroup.ID] = newNSGroup
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account.Network.IncSerial()
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if err = am.Store.SaveAccount(ctx, account); err != nil {
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return nil, err
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}
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if anyGroupHasPeers(account, newNSGroup.Groups) {
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am.updateAccountPeers(ctx, accountID)
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}
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am.StoreEvent(ctx, userID, newNSGroup.ID, accountID, activity.NameserverGroupCreated, newNSGroup.EventMeta())
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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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account, err := am.Store.GetAccount(ctx, accountID)
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if err != nil {
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return err
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}
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err = validateNameServerGroup(true, nsGroupToSave, account)
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if err != nil {
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return err
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}
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oldNSGroup := account.NameServerGroups[nsGroupToSave.ID]
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account.NameServerGroups[nsGroupToSave.ID] = nsGroupToSave
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account.Network.IncSerial()
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if err = am.Store.SaveAccount(ctx, account); err != nil {
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return err
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}
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if areNameServerGroupChangesAffectPeers(account, nsGroupToSave, oldNSGroup) {
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am.updateAccountPeers(ctx, accountID)
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}
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am.StoreEvent(ctx, userID, nsGroupToSave.ID, accountID, activity.NameserverGroupUpdated, nsGroupToSave.EventMeta())
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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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account, err := am.Store.GetAccount(ctx, accountID)
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if err != nil {
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return err
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}
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nsGroup := account.NameServerGroups[nsGroupID]
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if nsGroup == nil {
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return status.Errorf(status.NotFound, "nameserver group %s wasn't found", nsGroupID)
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}
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delete(account.NameServerGroups, nsGroupID)
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account.Network.IncSerial()
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if err = am.Store.SaveAccount(ctx, account); err != nil {
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return err
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}
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if anyGroupHasPeers(account, nsGroup.Groups) {
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am.updateAccountPeers(ctx, accountID)
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}
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am.StoreEvent(ctx, userID, nsGroup.ID, accountID, activity.NameserverGroupDeleted, nsGroup.EventMeta())
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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.IsAdminOrServiceUser() || user.AccountID != accountID {
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return nil, status.Errorf(status.PermissionDenied, "only users with admin power can view name server groups")
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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(existingGroup bool, nameserverGroup *nbdns.NameServerGroup, account *Account) error {
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nsGroupID := ""
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if existingGroup {
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nsGroupID = nameserverGroup.ID
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_, found := account.NameServerGroups[nsGroupID]
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if !found {
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return status.Errorf(status.NotFound, "nameserver group with ID %s was not found", nsGroupID)
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}
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}
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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 = validateNSGroupName(nameserverGroup.Name, nsGroupID, account.NameServerGroups)
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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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err = validateGroups(nameserverGroup.Groups, account.Groups)
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if err != nil {
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return err
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}
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return nil
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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, nsGroupMap map[string]*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 nsGroupMap {
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if name == nsGroup.Name && nsGroup.ID != nsGroupID {
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return status.Errorf(status.InvalidArgument, "a 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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nsListLenght := len(list)
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if nsListLenght == 0 || nsListLenght > 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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found := false
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for groupID := range groups {
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if id == groupID {
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found = true
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break
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}
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}
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if !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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// areNameServerGroupChangesAffectPeers checks if the changes in the nameserver group affect the peers.
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func areNameServerGroupChangesAffectPeers(account *Account, newNSGroup, oldNSGroup *nbdns.NameServerGroup) bool {
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if !newNSGroup.Enabled && !oldNSGroup.Enabled {
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return false
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}
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return anyGroupHasPeers(account, newNSGroup.Groups) || anyGroupHasPeers(account, oldNSGroup.Groups)
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}
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