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Merge pull request #2634 from nanoant/patch/ldap-attributes-in-bind
LDAP: Fetch attributes in Bind DN context
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7e0baf4136
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@ -921,6 +921,7 @@ auths.attribute_username_placeholder = Leave empty to use sign-in form field val
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auths.attribute_name = First name attribute
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auths.attribute_surname = Surname attribute
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auths.attribute_mail = Email attribute
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auths.attributes_in_bind = Fetch attributes in Bind DN context
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auths.filter = User Filter
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auths.admin_filter = Admin Filter
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auths.ms_ad_sa = Ms Ad SA
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@ -23,6 +23,7 @@ type AuthenticationForm struct {
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AttributeName string
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AttributeSurname string
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AttributeMail string
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AttributesInBind bool
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Filter string
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AdminFilter string
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IsActive bool
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@ -31,6 +31,7 @@ type Source struct {
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AttributeName string // First name attribute
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AttributeSurname string // Surname attribute
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AttributeMail string // E-mail attribute
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AttributesInBind bool // fetch attributes in bind context (not user)
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Filter string // Query filter to validate entry
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AdminFilter string // Query filter to check if user is admin
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Enabled bool // if this source is disabled
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@ -58,18 +59,10 @@ func (ls *Source) sanitizedUserDN(username string) (string, bool) {
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return fmt.Sprintf(ls.UserDN, username), true
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}
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func (ls *Source) FindUserDN(name string) (string, bool) {
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l, err := ldapDial(ls)
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if err != nil {
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log.Error(4, "LDAP Connect error, %s:%v", ls.Host, err)
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ls.Enabled = false
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return "", false
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}
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defer l.Close()
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func (ls *Source) findUserDN(l *ldap.Conn, name string) (string, bool) {
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log.Trace("Search for LDAP user: %s", name)
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if ls.BindDN != "" && ls.BindPassword != "" {
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err = l.Bind(ls.BindDN, ls.BindPassword)
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err := l.Bind(ls.BindDN, ls.BindPassword)
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if err != nil {
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log.Debug("Failed to bind as BindDN[%s]: %v", ls.BindDN, err)
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return "", false
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@ -85,7 +78,7 @@ func (ls *Source) FindUserDN(name string) (string, bool) {
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return "", false
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}
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log.Trace("Searching using filter %s", userFilter)
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log.Trace("Searching for DN using filter %s and base %s", userFilter, ls.UserBase)
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search := ldap.NewSearchRequest(
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ls.UserBase, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0,
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false, userFilter, []string{}, nil)
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@ -111,6 +104,14 @@ func (ls *Source) FindUserDN(name string) (string, bool) {
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// searchEntry : search an LDAP source if an entry (name, passwd) is valid and in the specific filter
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func (ls *Source) SearchEntry(name, passwd string, directBind bool) (string, string, string, string, bool, bool) {
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l, err := ldapDial(ls)
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if err != nil {
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log.Error(4, "LDAP Connect error, %s:%v", ls.Host, err)
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ls.Enabled = false
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return "", "", "", "", false, false
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}
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defer l.Close()
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var userDN string
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if directBind {
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log.Trace("LDAP will bind directly via UserDN template: %s", ls.UserDN)
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@ -124,33 +125,26 @@ func (ls *Source) SearchEntry(name, passwd string, directBind bool) (string, str
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log.Trace("LDAP will use BindDN.")
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var found bool
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userDN, found = ls.FindUserDN(name)
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userDN, found = ls.findUserDN(l, name)
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if !found {
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return "", "", "", "", false, false
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}
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}
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l, err := ldapDial(ls)
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if directBind || !ls.AttributesInBind {
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// binds user (checking password) before looking-up attributes in user context
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err = bindUser(l, userDN, passwd)
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if err != nil {
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log.Error(4, "LDAP Connect error (%s): %v", ls.Host, err)
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ls.Enabled = false
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return "", "", "", "", false, false
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}
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defer l.Close()
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log.Trace("Binding with userDN: %s", userDN)
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err = l.Bind(userDN, passwd)
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if err != nil {
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log.Debug("LDAP auth. failed for %s, reason: %v", userDN, err)
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return "", "", "", "", false, false
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}
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log.Trace("Bound successfully with userDN: %s", userDN)
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userFilter, ok := ls.sanitizedUserQuery(name)
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if !ok {
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return "", "", "", "", false, false
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}
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log.Trace("Fetching attributes '%v', '%v', '%v', '%v' with filter %s and base %s", ls.AttributeUsername, ls.AttributeName, ls.AttributeSurname, ls.AttributeMail, userFilter, userDN)
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search := ldap.NewSearchRequest(
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userDN, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false, userFilter,
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[]string{ls.AttributeUsername, ls.AttributeName, ls.AttributeSurname, ls.AttributeMail},
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@ -177,6 +171,7 @@ func (ls *Source) SearchEntry(name, passwd string, directBind bool) (string, str
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admin_attr := false
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if len(ls.AdminFilter) > 0 {
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log.Trace("Checking admin with filter %s and base %s", ls.AdminFilter, userDN)
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search = ldap.NewSearchRequest(
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userDN, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false, ls.AdminFilter,
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[]string{ls.AttributeName},
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@ -192,9 +187,28 @@ func (ls *Source) SearchEntry(name, passwd string, directBind bool) (string, str
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}
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}
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if !directBind && ls.AttributesInBind {
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// binds user (checking password) after looking-up attributes in BindDN context
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err = bindUser(l, userDN, passwd)
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if err != nil {
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return "", "", "", "", false, false
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}
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}
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return username_attr, name_attr, sn_attr, mail_attr, admin_attr, true
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}
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func bindUser(l *ldap.Conn, userDN, passwd string) error {
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log.Trace("Binding with userDN: %s", userDN)
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err := l.Bind(userDN, passwd)
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if err != nil {
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log.Debug("LDAP auth. failed for %s, reason: %v", userDN, err)
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return err
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}
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log.Trace("Bound successfully with userDN: %s", userDN)
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return err
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}
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func ldapDial(ls *Source) (*ldap.Conn, error) {
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if ls.UseSSL {
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log.Debug("Using TLS for LDAP without verifying: %v", ls.SkipVerify)
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File diff suppressed because one or more lines are too long
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@ -81,6 +81,7 @@ func parseLDAPConfig(form auth.AuthenticationForm) *models.LDAPConfig {
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AttributeName: form.AttributeName,
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AttributeSurname: form.AttributeSurname,
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AttributeMail: form.AttributeMail,
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AttributesInBind: form.AttributesInBind,
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Filter: form.Filter,
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AdminFilter: form.AdminFilter,
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Enabled: true,
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@ -79,6 +79,14 @@
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<label for="attribute_mail">{{.i18n.Tr "admin.auths.attribute_mail"}}</label>
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<input id="attribute_mail" name="attribute_mail" value="{{$cfg.AttributeMail}}" placeholder="e.g. mail" required>
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</div>
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{{if .Source.IsLDAP}}
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<div class="inline field">
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<div class="ui checkbox">
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<label><strong>{{.i18n.Tr "admin.auths.attributes_in_bind"}}</strong></label>
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<input name="attributes_in_bind" type="checkbox" {{if $cfg.AttributesInBind}}checked{{end}}>
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</div>
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</div>
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{{end}}
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{{end}}
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<!-- SMTP -->
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