func main() {
l, err := ldap.Dial("tcp", fmt.Sprintf("%s:%d", ldapServer, ldapPort))
if err != nil {
log.Fatalf("ERROR: %s\n", err.Error())
}
defer l.Close()
// l.Debug = true
err = l.Bind(user, passwd)
if err != nil {
log.Printf("ERROR: Cannot bind: %s\n", err.Error())
return
}
search := ldap.NewSearchRequest(
baseDN,
ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
filter,
Attributes,
nil)
sr, err := l.Search(search)
if err != nil {
log.Fatalf("ERROR: %s\n", err.Error())
return
}
log.Printf("Search: %s -> num of entries = %d\n", search.Filter, len(sr.Entries))
sr.PrettyPrint(0)
}
func (ls *Source) FindUserDN(name string) (string, bool) {
l, err := ldapDial(ls)
if err != nil {
log.Error(4, "LDAP Connect error, %s:%v", ls.Host, err)
ls.Enabled = false
return "", false
}
defer l.Close()
log.Trace("Search for LDAP user: %s", name)
if ls.BindDN != "" && ls.BindPassword != "" {
err = l.Bind(ls.BindDN, ls.BindPassword)
if err != nil {
log.Debug("Failed to bind as BindDN[%s]: %v", ls.BindDN, err)
return "", false
}
log.Trace("Bound as BindDN %s", ls.BindDN)
} else {
log.Trace("Proceeding with anonymous LDAP search.")
}
// A search for the user.
userFilter := fmt.Sprintf(ls.Filter, name)
log.Trace("Searching using filter %s", userFilter)
search := ldap.NewSearchRequest(
ls.UserBase, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0,
false, userFilter, []string{}, nil)
// Ensure we found a user
sr, err := l.Search(search)
if err != nil || len(sr.Entries) < 1 {
log.Debug("Failed search using filter[%s]: %v", userFilter, err)
return "", false
} else if len(sr.Entries) > 1 {
log.Debug("Filter '%s' returned more than one user.", userFilter)
return "", false
}
userDN := sr.Entries[0].DN
if userDN == "" {
log.Error(4, "LDAP search was succesful, but found no DN!")
return "", false
}
return userDN, true
}
func search(l *ldap.Conn, filter string, attributes []string) (*ldap.Entry, *ldap.Error) {
search := ldap.NewSearchRequest(
BaseDN,
ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
filter,
attributes,
nil)
sr, err := l.Search(search)
if err != nil {
log.Fatalf("ERROR: %s\n", err)
return nil, err
}
log.Printf("Search: %s -> num of entries = %d\n", search.Filter, len(sr.Entries))
if len(sr.Entries) == 0 {
return nil, ldap.NewError(ldap.ErrorDebugging, errors.New(fmt.Sprintf("no entries found for: %s", filter)))
}
return sr.Entries[0], nil
}
func main() {
l, err := ldap.DialSSL("tcp", fmt.Sprintf("%s:%d", LdapServer, LdapPort), nil)
if err != nil {
log.Fatalf("ERROR: %s\n", err.String())
}
defer l.Close()
// l.Debug = true
search := ldap.NewSearchRequest(
BaseDN,
ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
Filter,
Attributes,
nil)
sr, err := l.Search(search)
if err != nil {
log.Fatalf("ERROR: %s\n", err.String())
return
}
log.Printf("Search: %s -> num of entries = %d\n", search.Filter, len(sr.Entries))
sr.PrettyPrint(0)
}
// searchEntry : search an LDAP source if an entry (name, passwd) is valid and in the specific filter
func (ls *Source) SearchEntry(name, passwd string, directBind bool) (string, string, string, bool, bool) {
var userDN string
if directBind {
log.Trace("LDAP will bind directly via UserDN template: %s", ls.UserDN)
userDN = fmt.Sprintf(ls.UserDN, name)
} else {
log.Trace("LDAP will use BindDN.")
var found bool
userDN, found = ls.FindUserDN(name)
if !found {
return "", "", "", false, false
}
}
l, err := ldapDial(ls)
if err != nil {
log.Error(4, "LDAP Connect error, %s:%v", ls.Host, err)
ls.Enabled = false
return "", "", "", false, false
}
defer l.Close()
log.Trace("Binding with userDN: %s", userDN)
err = l.Bind(userDN, passwd)
if err != nil {
log.Debug("LDAP auth. failed for %s, reason: %v", userDN, err)
return "", "", "", false, false
}
log.Trace("Bound successfully with userDN: %s", userDN)
userFilter := fmt.Sprintf(ls.Filter, name)
search := ldap.NewSearchRequest(
userDN, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false, userFilter,
[]string{ls.AttributeName, ls.AttributeSurname, ls.AttributeMail},
nil)
sr, err := l.Search(search)
if err != nil {
log.Error(4, "LDAP Search failed unexpectedly! (%v)", err)
return "", "", "", false, false
} else if len(sr.Entries) < 1 {
if directBind {
log.Error(4, "User filter inhibited user login.")
} else {
log.Error(4, "LDAP Search failed unexpectedly! (0 entries)")
}
return "", "", "", false, false
}
name_attr := sr.Entries[0].GetAttributeValue(ls.AttributeName)
sn_attr := sr.Entries[0].GetAttributeValue(ls.AttributeSurname)
mail_attr := sr.Entries[0].GetAttributeValue(ls.AttributeMail)
admin_attr := false
if len(ls.AdminFilter) > 0 {
search = ldap.NewSearchRequest(
userDN, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false, ls.AdminFilter,
[]string{ls.AttributeName},
nil)
sr, err = l.Search(search)
if err != nil {
log.Error(4, "LDAP Admin Search failed unexpectedly! (%v)", err)
} else if len(sr.Entries) < 1 {
log.Error(4, "LDAP Admin Search failed")
} else {
admin_attr = true
}
}
return name_attr, sn_attr, mail_attr, admin_attr, true
}