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@ -1,8 +1,8 @@ |
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// Copyright github.com/juju2013. All rights reserved.
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// Copyright 2014 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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// package ldap provide functions & structure to query a LDAP ldap directory
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// Package ldap provide functions & structure to query a LDAP ldap directory
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// For now, it's mainly tested again an MS Active Directory service, see README.md for more information
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package ldap |
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@ -15,86 +15,115 @@ import ( |
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// Basic LDAP authentication service
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type Ldapsource struct { |
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Name string // canonical name (ie. corporate.ad)
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Host string // LDAP host
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Port int // port number
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UseSSL bool // Use SSL
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BaseDN string // Base DN
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AttributeUsername string // Username attribute
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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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Filter string // Query filter to validate entry
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MsAdSAFormat string // in the case of MS AD Simple Authen, the format to use (see: http://msdn.microsoft.com/en-us/library/cc223499.aspx)
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Enabled bool // if this source is disabled
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Name string // canonical name (ie. corporate.ad)
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Host string // LDAP host
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Port int // port number
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UseSSL bool // Use SSL
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BindDN string // DN to bind with
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BindPassword string // Bind DN password
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UserBase string // Base search path for users
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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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Filter string // Query filter to validate entry
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Enabled bool // if this source is disabled
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} |
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//Global LDAP directory pool
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var ( |
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Authensource []Ldapsource |
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) |
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// Add a new source (LDAP directory) to the global pool
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func AddSource(name string, host string, port int, usessl bool, basedn string, attribcn string, attribname string, attribsn string, attribmail string, filter string, msadsaformat string) { |
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ldaphost := Ldapsource{name, host, port, usessl, basedn, attribcn, attribname, attribsn, attribmail, filter, msadsaformat, true} |
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Authensource = append(Authensource, ldaphost) |
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} |
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func (ls Ldapsource) 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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//LoginUser : try to login an user to LDAP sources, return requested (attribute,true) if ok, ("",false) other wise
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//First match wins
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//Returns first attribute if exists
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func LoginUser(name, passwd string) (cn, fn, sn, mail string, r bool) { |
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r = false |
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for _, ls := range Authensource { |
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cn, fn, sn, mail, r = ls.SearchEntry(name, passwd) |
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if r { |
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return |
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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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if err != nil { |
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log.Debug("Failed to bind as BindDN: %s, %s", ls.BindDN, err.Error()) |
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return "", false |
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} |
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log.Trace("Bound as BindDN %s", ls.BindDN) |
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} else { |
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log.Trace("Proceeding with anonymous LDAP search.") |
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} |
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// A search for the user.
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userFilter := fmt.Sprintf(ls.Filter, name) |
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log.Trace("Searching using filter %s", userFilter) |
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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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// Ensure we found a user
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sr, err := l.Search(search) |
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if err != nil || len(sr.Entries) < 1 { |
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log.Debug("Failed search using filter %s: %s", userFilter, err.Error()) |
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return "", false |
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} else if len(sr.Entries) > 1 { |
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log.Debug("Filter '%s' returned more than one user.", userFilter) |
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return "", false |
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} |
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return |
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userDN := sr.Entries[0].DN |
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if userDN == "" { |
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log.Error(4, "LDAP search was succesful, but found no DN!") |
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return "", false |
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} |
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return userDN, true |
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} |
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// searchEntry : search an LDAP source if an entry (name, passwd) is valide and in the specific filter
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func (ls Ldapsource) SearchEntry(name, passwd string) (string, string, 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 Ldapsource) SearchEntry(name, passwd string) (string, string, string, bool) { |
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userDN, found := ls.FindUserDN(name) |
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if !found { |
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return "", "", "", false |
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} |
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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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return "", "", "", false |
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} |
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defer l.Close() |
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nx := fmt.Sprintf(ls.MsAdSAFormat, name) |
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err = l.Bind(nx, passwd) |
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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 Authan failed for %s, reason: %s", nx, err.Error()) |
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return "", "", "", "", false |
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log.Debug("LDAP auth. failed for %s, reason: %s", userDN, err.Error()) |
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return "", "", "", false |
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} |
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log.Trace("Bound successfully with userDN: %s", userDN) |
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userFilter := fmt.Sprintf(ls.Filter, name) |
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search := ldap.NewSearchRequest( |
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ls.BaseDN, |
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ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false, |
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fmt.Sprintf(ls.Filter, name), |
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[]string{ls.AttributeUsername, ls.AttributeName, ls.AttributeSurname, ls.AttributeMail}, |
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userDN, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false, userFilter, |
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[]string{ls.AttributeName, ls.AttributeSurname, ls.AttributeMail}, |
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nil) |
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sr, err := l.Search(search) |
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if err != nil { |
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log.Debug("LDAP Authen OK but not in filter %s", name) |
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return "", "", "", "", false |
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} |
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log.Debug("LDAP Authen OK: %s", name) |
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if len(sr.Entries) > 0 { |
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cn := sr.Entries[0].GetAttributeValue(ls.AttributeUsername) |
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name := sr.Entries[0].GetAttributeValue(ls.AttributeName) |
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sn := sr.Entries[0].GetAttributeValue(ls.AttributeSurname) |
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mail := sr.Entries[0].GetAttributeValue(ls.AttributeMail) |
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return cn, name, sn, mail, true |
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log.Error(4, "LDAP Search failed unexpectedly! (%s)", err.Error()) |
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return "", "", "", false |
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} else if len(sr.Entries) < 1 { |
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log.Error(4, "LDAP Search failed unexpectedly! (0 entries)") |
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return "", "", "", false |
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} |
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return "", "", "", "", true |
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name_attr := sr.Entries[0].GetAttributeValue(ls.AttributeName) |
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sn_attr := sr.Entries[0].GetAttributeValue(ls.AttributeSurname) |
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mail_attr := sr.Entries[0].GetAttributeValue(ls.AttributeMail) |
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return name_attr, sn_attr, mail_attr, true |
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} |
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func ldapDial(ls Ldapsource) (*ldap.Conn, error) { |
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if ls.UseSSL { |
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log.Debug("Using TLS for LDAP") |
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return ldap.DialTLS("tcp", fmt.Sprintf("%s:%d", ls.Host, ls.Port), nil) |
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} else { |
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return ldap.Dial("tcp", fmt.Sprintf("%s:%d", ls.Host, ls.Port)) |
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