mirror of
https://github.com/glauth/glauth.git
synced 2026-10-25 05:30:47 +00:00
Chris F Ravenscroft
4cf38893ac
* Introducing goconvey testing and refactoring of config and plugin backends. * gofmt, oops * Refactored re-insertion of requested attributes
491 lines
14 KiB
Go
491 lines
14 KiB
Go
package main
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import (
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"database/sql"
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"errors"
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"fmt"
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"net"
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"os"
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"regexp"
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"sort"
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"strconv"
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"strings"
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"github.com/GeertJohan/yubigo"
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"github.com/glauth/glauth/pkg/config"
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"github.com/glauth/glauth/pkg/handler"
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"github.com/glauth/glauth/pkg/stats"
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"github.com/go-logr/logr"
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"github.com/nmcclain/ldap"
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)
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var configattributematcher = regexp.MustCompile(`(?i)\((?P<attribute>[a-zA-Z0-9]+)\s*=\s*(?P<value>.*)\)`)
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type SqlBackend interface {
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// Name used by database/sql when loading the driver
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GetDriverName() string
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// Create db/schema if necessary
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CreateSchema(db *sql.DB)
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//
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GetPrepareSymbol() string
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}
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type database struct {
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path string
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cnx *sql.DB
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}
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type databaseHandler struct {
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backend config.Backend
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log logr.Logger
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cfg *config.Config
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yubikeyAuth *yubigo.YubiAuth
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sqlBackend SqlBackend
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database database
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MemGroups []config.Group
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ldohelper handler.LDAPOpsHelper
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attmatcher *regexp.Regexp
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}
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// func NewDatabaseHandler_deprecated(log *logging.Logger, cfg *config.Config, yubikeyAuth *yubigo.YubiAuth, sqlBackend SqlBackend) handler.Handler {
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func NewDatabaseHandler(sqlBackend SqlBackend, opts ...handler.Option) handler.Handler {
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options := handler.NewOptions(opts...)
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// Note: we will never terminate this connection pool.
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db, err := sql.Open(sqlBackend.GetDriverName(), options.Backend.Database)
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if err != nil {
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options.Logger.Error(err, "Unable to open SQL database named '%s' error: %s", options.Backend.Database)
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os.Exit(1)
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}
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err = db.Ping()
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if err != nil {
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options.Logger.Error(err, "Unable to communicate with SQL database error: %s", options.Backend.Database)
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os.Exit(1)
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}
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dbInfo := database{
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path: options.Backend.Database,
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cnx: db,
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}
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handler := databaseHandler{
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backend: options.Backend,
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log: options.Logger,
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cfg: options.Config,
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yubikeyAuth: options.YubiAuth,
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sqlBackend: sqlBackend,
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database: dbInfo,
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ldohelper: options.LDAPHelper,
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attmatcher: configattributematcher}
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sqlBackend.CreateSchema(db)
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options.Logger.V(3).Info("Database (" + sqlBackend.GetDriverName() + "::" + options.Backend.Database + ") Plugin: Ready")
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return handler
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}
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func (h databaseHandler) GetBackend() config.Backend {
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return h.backend
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}
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func (h databaseHandler) GetLog() logr.Logger {
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return h.log
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}
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func (h databaseHandler) GetCfg() *config.Config {
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return h.cfg
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}
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func (h databaseHandler) GetYubikeyAuth() *yubigo.YubiAuth {
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return h.yubikeyAuth
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}
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func (h databaseHandler) Bind(bindDN, bindSimplePw string, conn net.Conn) (resultCode ldap.LDAPResultCode, err error) {
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return h.ldohelper.Bind(h, bindDN, bindSimplePw, conn)
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}
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func (h databaseHandler) Search(bindDN string, searchReq ldap.SearchRequest, conn net.Conn) (result ldap.ServerSearchResult, err error) {
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return h.ldohelper.Search(h, bindDN, searchReq, conn)
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}
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// Add is not yet supported for the sql backend
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func (h databaseHandler) Add(boundDN string, req ldap.AddRequest, conn net.Conn) (result ldap.LDAPResultCode, err error) {
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return ldap.LDAPResultInsufficientAccessRights, nil
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}
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// Modify is not yet supported for the sql backend
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func (h databaseHandler) Modify(boundDN string, req ldap.ModifyRequest, conn net.Conn) (result ldap.LDAPResultCode, err error) {
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return ldap.LDAPResultInsufficientAccessRights, nil
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}
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// Delete is not yet supported for the sql backend
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func (h databaseHandler) Delete(boundDN string, deleteDN string, conn net.Conn) (result ldap.LDAPResultCode, err error) {
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return ldap.LDAPResultInsufficientAccessRights, nil
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}
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func (h databaseHandler) FindUser(userName string) (f bool, u config.User, err error) {
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user := config.User{}
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found := false
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err = h.database.cnx.QueryRow(fmt.Sprintf(`
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SELECT u.uidnumber,u.primarygroup,u.passbcrypt,u.passsha256,u.otpsecret,u.yubikey
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FROM users u WHERE lower(u.name)=%s`, h.sqlBackend.GetPrepareSymbol()), userName).Scan(
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&user.UIDNumber, &user.PrimaryGroup, &user.PassBcrypt, &user.PassSHA256, &user.OTPSecret, &user.Yubikey)
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if err == nil {
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found = true
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}
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return found, user, err
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}
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func (h databaseHandler) FindGroup(groupName string) (f bool, g config.Group, err error) {
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group := config.Group{}
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found := false
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err = h.database.cnx.QueryRow(fmt.Sprintf(`
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SELECT g.gidnumber FROM groups g WHERE lower(name)=%s`, h.sqlBackend.GetPrepareSymbol()), groupName).Scan(
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&group.GIDNumber)
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if err == nil {
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found = true
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}
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return found, group, err
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}
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func (h databaseHandler) FindPosixAccounts() (entrylist []*ldap.Entry, err error) {
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entries := []*ldap.Entry{}
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h.MemGroups, err = h.memoizeGroups()
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if err != nil {
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return entries, err
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}
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rows, err := h.database.cnx.Query(`
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SELECT u.name,u.uidnumber,u.primarygroup,u.passbcrypt,u.passsha256,u.otpsecret,u.yubikey,u.othergroups,u.givenname,u.sn,u.mail,u.loginshell,u.homedirectory,u.disabled
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FROM users u`)
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if err != nil {
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return entries, err
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}
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defer rows.Close()
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var otherGroups string
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var disabled int
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u := config.User{}
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for rows.Next() {
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err := rows.Scan(&u.Name, &u.UIDNumber, &u.PrimaryGroup, &u.PassBcrypt, &u.PassSHA256, &u.OTPSecret, &u.Yubikey, &otherGroups, &u.GivenName, &u.SN, &u.Mail, &u.LoginShell, &u.Homedir, &disabled)
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if err != nil {
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return entries, err
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}
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u.OtherGroups = h.commaListToTable(otherGroups)
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u.Disabled = h.intToBool(disabled)
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entries = append(entries, h.getAccount(u))
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}
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return entries, nil
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}
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func (h databaseHandler) FindPosixGroups() (entrylist []*ldap.Entry, err error) {
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entries := []*ldap.Entry{}
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h.MemGroups, err = h.memoizeGroups()
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if err != nil {
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return entries, err
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}
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for _, g := range h.MemGroups {
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entries = append(entries, h.getGroup(g))
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}
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return entries, nil
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}
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func (h databaseHandler) Close(boundDn string, conn net.Conn) error {
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stats.Frontend.Add("closes", 1)
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return nil
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}
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func (h databaseHandler) intToBool(value int) bool {
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if value == 0 {
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return false
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}
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return true
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}
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func (h databaseHandler) commaListToTable(commaList string) []int {
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if len(commaList) == 0 {
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return make([]int, 0)
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}
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rowsAsStrings := strings.Split(commaList, ",")
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rowsAsInts := make([]int, len(rowsAsStrings))
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for i, v := range rowsAsStrings {
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iv, err := strconv.Atoi(v)
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if err != nil {
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return rowsAsInts
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}
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rowsAsInts[i] = iv
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}
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return rowsAsInts
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}
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func (h databaseHandler) memoizeGroups() ([]config.Group, error) {
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workMemGroups := make([]*config.Group, 0)
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rows, err := h.database.cnx.Query(`
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SELECT g1.name,g1.gidnumber,ig.includegroupid
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FROM groups g1
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LEFT JOIN includegroups ig ON g1.gidnumber=ig.parentgroupid
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LEFT JOIN groups g2 ON ig.includegroupid=g2.gidnumber`)
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if err != nil {
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return nil, errors.New("Unable to memoize groups list")
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}
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defer rows.Close()
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var groupName string
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var groupId int
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var includeId sql.NullInt64 // Store includeid from left join
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var pg *config.Group
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recentId := -1 // id of recently updated group
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for rows.Next() {
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err := rows.Scan(&groupName, &groupId, &includeId)
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if err != nil {
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return nil, errors.New("Unable to memoize groups list")
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}
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if recentId != groupId {
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recentId = groupId
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g := config.Group{Name: groupName, GIDNumber: groupId}
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pg = &g // To manipulate end of slice
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workMemGroups = append(workMemGroups, &g)
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}
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if includeId.Valid {
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pg.IncludeGroups = append(pg.IncludeGroups, int(includeId.Int64))
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}
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}
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memGroups := make([]config.Group, len(workMemGroups))
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for i, v := range workMemGroups {
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memGroups[i] = config.Group{Name: v.Name, GIDNumber: v.GIDNumber, IncludeGroups: v.IncludeGroups}
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}
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return memGroups, nil
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}
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// Used when looking up Posix Groups
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func (h databaseHandler) getGroupMembers(gid int) []string {
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members := make(map[string]bool)
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rows, err := h.database.cnx.Query(`
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SELECT u.name,u.uidnumber,u.primarygroup,u.passbcrypt,u.passsha256,u.otpsecret,u.yubikey,u.othergroups
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FROM users u WHERE lower(u.name)=?`,
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)
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if err != nil {
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// Silent fail... for now
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return []string{}
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}
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defer rows.Close()
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var otherGroups string
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u := config.User{}
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for rows.Next() {
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err := rows.Scan(&u.Name, &u.UIDNumber, &u.PrimaryGroup, &u.PassBcrypt, &u.PassSHA256, &u.OTPSecret, &u.Yubikey, &otherGroups)
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if err != nil {
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return []string{}
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}
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if u.PrimaryGroup == gid {
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dn := fmt.Sprintf("cn=%s,ou=%s,%s", u.Name, h.getGroupName(u.PrimaryGroup), h.backend.BaseDN)
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members[dn] = true
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} else {
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u.OtherGroups = h.commaListToTable(otherGroups)
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for _, othergid := range u.OtherGroups {
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if othergid == gid {
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dn := fmt.Sprintf("cn=%s,ou=%s,%s", u.Name, h.getGroupName(u.PrimaryGroup), h.backend.BaseDN)
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members[dn] = true
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}
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}
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}
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}
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for _, g := range h.MemGroups {
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if gid == g.GIDNumber {
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for _, includegroupid := range g.IncludeGroups {
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if includegroupid != gid {
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includegroupmembers := h.getGroupMembers(includegroupid)
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for _, includegroupmember := range includegroupmembers {
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members[includegroupmember] = true
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}
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}
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}
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}
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}
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m := []string{}
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for k := range members {
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m = append(m, k)
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}
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sort.Strings(m)
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return m
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}
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// Used exclusively when looking up Posix Groups
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func (h databaseHandler) getGroupMemberIDs(gid int) []string {
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members := make(map[string]bool)
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rows, err := h.database.cnx.Query(`
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SELECT u.name,u.uidnumber,u.primarygroup,u.passbcrypt,u.passsha256,u.otpsecret,u.yubikey,u.othergroups
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FROM users u`)
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if err != nil {
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// Silent fail... for now
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return []string{}
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}
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defer rows.Close()
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var otherGroups string
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u := config.User{}
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for rows.Next() {
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err := rows.Scan(&u.Name, &u.UIDNumber, &u.PrimaryGroup, &u.PassBcrypt, &u.PassSHA256, &u.OTPSecret, &u.Yubikey, &otherGroups)
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if err != nil {
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return []string{}
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}
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if u.PrimaryGroup == gid {
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members[u.Name] = true
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} else {
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u.OtherGroups = h.commaListToTable(otherGroups)
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for _, othergid := range u.OtherGroups {
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if othergid == gid {
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members[u.Name] = true
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}
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}
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}
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}
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for _, g := range h.MemGroups {
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if gid == g.GIDNumber {
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for _, includegroupid := range g.IncludeGroups {
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if includegroupid == gid {
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h.log.V(3).Info(fmt.Sprintf("Group: %d - Ignoring myself as included group", includegroupid))
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} else {
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includegroupmemberids := h.getGroupMemberIDs(includegroupid)
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for _, includegroupmemberid := range includegroupmemberids {
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members[includegroupmemberid] = true
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}
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}
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}
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}
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}
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m := []string{}
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for k := range members {
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m = append(m, k)
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}
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sort.Strings(m)
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return m
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}
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// Invoked for every user being returned from our database
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func (h databaseHandler) getGroupDNs(gids []int) []string {
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groups := make(map[string]bool)
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for _, gid := range gids {
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for _, g := range h.MemGroups {
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if g.GIDNumber == gid {
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dn := fmt.Sprintf("cn=%s,ou=groups,%s", g.Name, h.backend.BaseDN)
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groups[dn] = true
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}
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for _, includegroupid := range g.IncludeGroups {
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if includegroupid == gid && g.GIDNumber != gid {
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includegroupdns := h.getGroupDNs([]int{g.GIDNumber})
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for _, includegroupdn := range includegroupdns {
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groups[includegroupdn] = true
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}
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}
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}
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}
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}
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g := []string{}
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for k := range groups {
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g = append(g, k)
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}
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sort.Strings(g)
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return g
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}
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// Invoked for every user being returned from our database
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func (h databaseHandler) getGroupName(gid int) string {
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for _, g := range h.MemGroups {
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if g.GIDNumber == gid {
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return g.Name
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}
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}
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return ""
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}
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// Toolbox
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func (h databaseHandler) getGroup(g config.Group) *ldap.Entry {
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attrs := []*ldap.EntryAttribute{}
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attrs = append(attrs, &ldap.EntryAttribute{"cn", []string{g.Name}})
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attrs = append(attrs, &ldap.EntryAttribute{"description", []string{fmt.Sprintf("%s via LDAP", g.Name)}})
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attrs = append(attrs, &ldap.EntryAttribute{"gidNumber", []string{fmt.Sprintf("%d", g.GIDNumber)}})
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attrs = append(attrs, &ldap.EntryAttribute{"objectClass", []string{"posixGroup"}})
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attrs = append(attrs, &ldap.EntryAttribute{"uniqueMember", h.getGroupMembers(g.GIDNumber)})
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attrs = append(attrs, &ldap.EntryAttribute{"memberUid", h.getGroupMemberIDs(g.GIDNumber)})
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dn := fmt.Sprintf("cn=%s,ou=groups,%s", g.Name, h.backend.BaseDN)
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return &ldap.Entry{dn, attrs}
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}
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func (h databaseHandler) getAccount(u config.User) *ldap.Entry {
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attrs := []*ldap.EntryAttribute{}
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attrs = append(attrs, &ldap.EntryAttribute{"cn", []string{u.Name}})
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attrs = append(attrs, &ldap.EntryAttribute{"uid", []string{u.Name}})
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if len(u.GivenName) > 0 {
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attrs = append(attrs, &ldap.EntryAttribute{"givenName", []string{u.GivenName}})
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}
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if len(u.SN) > 0 {
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attrs = append(attrs, &ldap.EntryAttribute{"sn", []string{u.SN}})
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}
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attrs = append(attrs, &ldap.EntryAttribute{"ou", []string{h.getGroupName(u.PrimaryGroup)}})
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attrs = append(attrs, &ldap.EntryAttribute{"uidNumber", []string{fmt.Sprintf("%d", u.UIDNumber)}})
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if u.Disabled {
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attrs = append(attrs, &ldap.EntryAttribute{"accountStatus", []string{"inactive"}})
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} else {
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attrs = append(attrs, &ldap.EntryAttribute{"accountStatus", []string{"active"}})
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}
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if len(u.Mail) > 0 {
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attrs = append(attrs, &ldap.EntryAttribute{"mail", []string{u.Mail}})
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}
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attrs = append(attrs, &ldap.EntryAttribute{"objectClass", []string{"posixAccount"}})
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if len(u.LoginShell) > 0 {
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attrs = append(attrs, &ldap.EntryAttribute{"loginShell", []string{u.LoginShell}})
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} else {
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attrs = append(attrs, &ldap.EntryAttribute{"loginShell", []string{"/bin/bash"}})
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}
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if len(u.Homedir) > 0 {
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attrs = append(attrs, &ldap.EntryAttribute{"homeDirectory", []string{u.Homedir}})
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} else {
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attrs = append(attrs, &ldap.EntryAttribute{"homeDirectory", []string{"/home/" + u.Name}})
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}
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attrs = append(attrs, &ldap.EntryAttribute{"description", []string{fmt.Sprintf("%s via LDAP", u.Name)}})
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attrs = append(attrs, &ldap.EntryAttribute{"gecos", []string{fmt.Sprintf("%s via LDAP", u.Name)}})
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attrs = append(attrs, &ldap.EntryAttribute{"gidNumber", []string{fmt.Sprintf("%d", u.PrimaryGroup)}})
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attrs = append(attrs, &ldap.EntryAttribute{"memberOf", h.getGroupDNs(append(u.OtherGroups, u.PrimaryGroup))})
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if len(u.SSHKeys) > 0 {
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attrs = append(attrs, &ldap.EntryAttribute{"sshPublicKey", u.SSHKeys})
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}
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dn := fmt.Sprintf("cn=%s,ou=%s,%s", u.Name, h.getGroupName(u.PrimaryGroup), h.backend.BaseDN)
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return &ldap.Entry{dn, attrs}
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}
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func main() {}
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