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v0.5.5: Add "ldap-auth-base-dn" parameter to search autenticating accounts, so we can separate authentication and manipulated base DN

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This commit is contained in:
yo 2023-08-07 13:57:48 +02:00
parent 5aee108f65
commit bf9e0afccc
2 changed files with 22 additions and 8 deletions
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13
ldap.go
View File

@ -19,6 +19,7 @@ type MyLdap struct {
User string
Pass string
BaseDN string
AuthBaseDN string
}
var (
@ -101,7 +102,7 @@ func searchByCn(myldap *MyLdap, baseDn, cn, class, attributes string) (*ldap.Sea
} else {
filter = cn
}
return doLdapSearch(myldap, baseDn, filter, class, attributes)
return doLdapSearch(myldap, baseDn, false, filter, class, attributes)
}
func searchByDn(myldap *MyLdap, dn, attributes string) (*ldap.SearchResult, error) {
@ -110,10 +111,10 @@ func searchByDn(myldap *MyLdap, dn, attributes string) (*ldap.SearchResult, erro
rem := strings.Split(dn, ",")[1:]
bdn := strings.Join(rem, ",")
bdn = strings.Replace(bdn, fmt.Sprintf(",%s", myldap.BaseDN), "", 1)
return doLdapSearch(myldap, bdn, filter, "ALL", "ALL")
return doLdapSearch(myldap, bdn, false, filter, "ALL", "ALL")
}
func doLdapSearch(myldap *MyLdap, baseDn, filter, class, attributes string) (*ldap.SearchResult, error) {
func doLdapSearch(myldap *MyLdap, baseDn string, baseDnIsAbsolute bool, filter, class, attributes string) (*ldap.SearchResult, error) {
var fFilter string
var realBaseDn string
var realAttributes []string
@ -134,9 +135,13 @@ func doLdapSearch(myldap *MyLdap, baseDn, filter, class, attributes string) (*ld
// Build absolute search base DN from configuration & provided DN (which is relative)
if strings.EqualFold(baseDn, "ALL") || len(baseDn) == 0 {
realBaseDn = fmt.Sprintf("%s", myldap.BaseDN)
} else {
if len(baseDn) > 0 && baseDnIsAbsolute {
realBaseDn = fmt.Sprintf("%s", baseDn)
} else {
realBaseDn = fmt.Sprintf("%s,%s", baseDn, myldap.BaseDN)
}
}
log.Debugf("LDAP search base dn: %s", realBaseDn)
@ -162,7 +167,7 @@ func doLdapSearch(myldap *MyLdap, baseDn, filter, class, attributes string) (*ld
func findUserFullDN(myldap *MyLdap, username string) (string, error) {
filter := fmt.Sprintf("cn=%s", username)
sr, err := doLdapSearch(myldap, "", filter, "ALL", "")
sr, err := doLdapSearch(myldap, myldap.AuthBaseDN, true, filter, "ALL", "")
if err != nil {
return "", err
}

15
main.go
View File

@ -22,7 +22,7 @@ import (
)
var (
gVersion = "0.5.4"
gVersion = "0.5.5"
gRoLdap *MyLdap
)
@ -95,7 +95,6 @@ func sendResponse(c *gin.Context, res *ldap.SearchResult, format string) {
txtRes := marshalResultToText(res, "", true, false)
log.Debugf("%v\n", string(txtRes))
c.String(http.StatusOK, string(txtRes))
}
}
@ -566,6 +565,7 @@ func main() {
var ldapUser string
var ldapPass string
var ldapBaseDN string
var ldapAuthBaseDN string
var tlsPrivKey string
var tlsCert string
var doTls bool
@ -577,6 +577,7 @@ func main() {
flag.StringVar(&ldapUser, "ldap-user", "", "ldap read-only username")
flag.StringVar(&ldapPass, "ldap-pass", "", "ldap password")
flag.StringVar(&ldapBaseDN, "ldap-base-dn", "", "ldap base DN")
flag.StringVar(&ldapAuthBaseDN, "ldap-auth-base-dn", "", "ldap base DN to find authenticating users")
flag.BoolVar(&doTls, "https", false, "Serve over TLS")
flag.StringVar(&tlsPrivKey, "ssl-private-key", "", "SSL Private key")
flag.StringVar(&tlsCert, "ssl-certificate", "", "SSL certificate (PEM format)")
@ -635,6 +636,14 @@ func main() {
log.Fatal("No ldap-base-dn defined!")
}
}
if len(ldapAuthBaseDN) == 0 {
l := viper.GetString("LDAP_AUTH_BASE_DN")
if len(l) > 0 {
ldapAuthBaseDN = l
} else {
log.Fatal("No ldap-auth-base-dn defined!")
}
}
if false == doTls {
doTls = viper.GetBool("HTTPS")
}
@ -662,7 +671,7 @@ func main() {
r := gin.Default()
gRoLdap = &MyLdap{Host: ldapHost, User: ldapUser, Pass: ldapPass, BaseDN: ldapBaseDN}
gRoLdap = &MyLdap{Host: ldapHost, User: ldapUser, Pass: ldapPass, BaseDN: ldapBaseDN, AuthBaseDN: ldapAuthBaseDN}
_, err := connectLdap(gRoLdap)
if err != nil {
log.Fatalf("Cannot connect to ldap: %v", err)