mirror of
https://github.com/go-gitea/gitea
synced 2024-08-20 06:11:16 +02:00
743 lines
20 KiB
Go
743 lines
20 KiB
Go
// 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 models
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import (
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"crypto/tls"
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"encoding/json"
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"errors"
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"fmt"
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"net/smtp"
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"net/textproto"
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"strings"
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"time"
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"github.com/Unknwon/com"
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"github.com/go-macaron/binding"
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"github.com/go-xorm/core"
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"github.com/go-xorm/xorm"
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"code.gitea.io/gitea/modules/auth/ldap"
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"code.gitea.io/gitea/modules/auth/oauth2"
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"code.gitea.io/gitea/modules/auth/pam"
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"code.gitea.io/gitea/modules/log"
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)
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// LoginType represents an login type.
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type LoginType int
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// Note: new type must append to the end of list to maintain compatibility.
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const (
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LoginNoType LoginType = iota
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LoginPlain // 1
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LoginLDAP // 2
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LoginSMTP // 3
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LoginPAM // 4
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LoginDLDAP // 5
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LoginOAuth2 // 6
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)
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// LoginNames contains the name of LoginType values.
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var LoginNames = map[LoginType]string{
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LoginLDAP: "LDAP (via BindDN)",
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LoginDLDAP: "LDAP (simple auth)", // Via direct bind
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LoginSMTP: "SMTP",
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LoginPAM: "PAM",
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LoginOAuth2: "OAuth2",
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}
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// SecurityProtocolNames contains the name of SecurityProtocol values.
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var SecurityProtocolNames = map[ldap.SecurityProtocol]string{
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ldap.SecurityProtocolUnencrypted: "Unencrypted",
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ldap.SecurityProtocolLDAPS: "LDAPS",
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ldap.SecurityProtocolStartTLS: "StartTLS",
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}
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// Ensure structs implemented interface.
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var (
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_ core.Conversion = &LDAPConfig{}
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_ core.Conversion = &SMTPConfig{}
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_ core.Conversion = &PAMConfig{}
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_ core.Conversion = &OAuth2Config{}
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)
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// LDAPConfig holds configuration for LDAP login source.
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type LDAPConfig struct {
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*ldap.Source
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}
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// FromDB fills up a LDAPConfig from serialized format.
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func (cfg *LDAPConfig) FromDB(bs []byte) error {
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return json.Unmarshal(bs, &cfg)
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}
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// ToDB exports a LDAPConfig to a serialized format.
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func (cfg *LDAPConfig) ToDB() ([]byte, error) {
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return json.Marshal(cfg)
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}
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// SecurityProtocolName returns the name of configured security
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// protocol.
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func (cfg *LDAPConfig) SecurityProtocolName() string {
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return SecurityProtocolNames[cfg.SecurityProtocol]
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}
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// SMTPConfig holds configuration for the SMTP login source.
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type SMTPConfig struct {
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Auth string
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Host string
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Port int
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AllowedDomains string `xorm:"TEXT"`
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TLS bool
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SkipVerify bool
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}
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// FromDB fills up an SMTPConfig from serialized format.
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func (cfg *SMTPConfig) FromDB(bs []byte) error {
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return json.Unmarshal(bs, cfg)
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}
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// ToDB exports an SMTPConfig to a serialized format.
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func (cfg *SMTPConfig) ToDB() ([]byte, error) {
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return json.Marshal(cfg)
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}
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// PAMConfig holds configuration for the PAM login source.
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type PAMConfig struct {
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ServiceName string // pam service (e.g. system-auth)
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}
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// FromDB fills up a PAMConfig from serialized format.
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func (cfg *PAMConfig) FromDB(bs []byte) error {
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return json.Unmarshal(bs, &cfg)
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}
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// ToDB exports a PAMConfig to a serialized format.
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func (cfg *PAMConfig) ToDB() ([]byte, error) {
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return json.Marshal(cfg)
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}
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// OAuth2Config holds configuration for the OAuth2 login source.
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type OAuth2Config struct {
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Provider string
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ClientID string
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ClientSecret string
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}
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// FromDB fills up an OAuth2Config from serialized format.
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func (cfg *OAuth2Config) FromDB(bs []byte) error {
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return json.Unmarshal(bs, cfg)
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}
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// ToDB exports an SMTPConfig to a serialized format.
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func (cfg *OAuth2Config) ToDB() ([]byte, error) {
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return json.Marshal(cfg)
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}
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// LoginSource represents an external way for authorizing users.
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type LoginSource struct {
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ID int64 `xorm:"pk autoincr"`
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Type LoginType
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Name string `xorm:"UNIQUE"`
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IsActived bool `xorm:"INDEX NOT NULL DEFAULT false"`
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Cfg core.Conversion `xorm:"TEXT"`
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Created time.Time `xorm:"-"`
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CreatedUnix int64 `xorm:"INDEX"`
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Updated time.Time `xorm:"-"`
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UpdatedUnix int64 `xorm:"INDEX"`
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}
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// BeforeInsert is invoked from XORM before inserting an object of this type.
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func (source *LoginSource) BeforeInsert() {
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source.CreatedUnix = time.Now().Unix()
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source.UpdatedUnix = source.CreatedUnix
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}
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// BeforeUpdate is invoked from XORM before updating this object.
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func (source *LoginSource) BeforeUpdate() {
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source.UpdatedUnix = time.Now().Unix()
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}
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// Cell2Int64 converts a xorm.Cell type to int64,
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// and handles possible irregular cases.
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func Cell2Int64(val xorm.Cell) int64 {
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switch (*val).(type) {
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case []uint8:
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log.Trace("Cell2Int64 ([]uint8): %v", *val)
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return com.StrTo(string((*val).([]uint8))).MustInt64()
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}
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return (*val).(int64)
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}
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// BeforeSet is invoked from XORM before setting the value of a field of this object.
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func (source *LoginSource) BeforeSet(colName string, val xorm.Cell) {
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switch colName {
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case "type":
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switch LoginType(Cell2Int64(val)) {
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case LoginLDAP, LoginDLDAP:
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source.Cfg = new(LDAPConfig)
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case LoginSMTP:
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source.Cfg = new(SMTPConfig)
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case LoginPAM:
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source.Cfg = new(PAMConfig)
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case LoginOAuth2:
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source.Cfg = new(OAuth2Config)
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default:
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panic("unrecognized login source type: " + com.ToStr(*val))
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}
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}
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}
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// AfterSet is invoked from XORM after setting the value of a field of this object.
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func (source *LoginSource) AfterSet(colName string, _ xorm.Cell) {
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switch colName {
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case "created_unix":
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source.Created = time.Unix(source.CreatedUnix, 0).Local()
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case "updated_unix":
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source.Updated = time.Unix(source.UpdatedUnix, 0).Local()
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}
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}
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// TypeName return name of this login source type.
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func (source *LoginSource) TypeName() string {
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return LoginNames[source.Type]
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}
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// IsLDAP returns true of this source is of the LDAP type.
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func (source *LoginSource) IsLDAP() bool {
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return source.Type == LoginLDAP
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}
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// IsDLDAP returns true of this source is of the DLDAP type.
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func (source *LoginSource) IsDLDAP() bool {
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return source.Type == LoginDLDAP
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}
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// IsSMTP returns true of this source is of the SMTP type.
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func (source *LoginSource) IsSMTP() bool {
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return source.Type == LoginSMTP
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}
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// IsPAM returns true of this source is of the PAM type.
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func (source *LoginSource) IsPAM() bool {
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return source.Type == LoginPAM
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}
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// IsOAuth2 returns true of this source is of the OAuth2 type.
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func (source *LoginSource) IsOAuth2() bool {
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return source.Type == LoginOAuth2
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}
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// HasTLS returns true of this source supports TLS.
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func (source *LoginSource) HasTLS() bool {
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return ((source.IsLDAP() || source.IsDLDAP()) &&
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source.LDAP().SecurityProtocol > ldap.SecurityProtocolUnencrypted) ||
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source.IsSMTP()
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}
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// UseTLS returns true of this source is configured to use TLS.
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func (source *LoginSource) UseTLS() bool {
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switch source.Type {
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case LoginLDAP, LoginDLDAP:
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return source.LDAP().SecurityProtocol != ldap.SecurityProtocolUnencrypted
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case LoginSMTP:
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return source.SMTP().TLS
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}
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return false
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}
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// SkipVerify returns true if this source is configured to skip SSL
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// verification.
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func (source *LoginSource) SkipVerify() bool {
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switch source.Type {
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case LoginLDAP, LoginDLDAP:
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return source.LDAP().SkipVerify
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case LoginSMTP:
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return source.SMTP().SkipVerify
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}
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return false
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}
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// LDAP returns LDAPConfig for this source, if of LDAP type.
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func (source *LoginSource) LDAP() *LDAPConfig {
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return source.Cfg.(*LDAPConfig)
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}
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// SMTP returns SMTPConfig for this source, if of SMTP type.
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func (source *LoginSource) SMTP() *SMTPConfig {
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return source.Cfg.(*SMTPConfig)
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}
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// PAM returns PAMConfig for this source, if of PAM type.
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func (source *LoginSource) PAM() *PAMConfig {
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return source.Cfg.(*PAMConfig)
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}
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// OAuth2 returns OAuth2Config for this source, if of OAuth2 type.
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func (source *LoginSource) OAuth2() *OAuth2Config {
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return source.Cfg.(*OAuth2Config)
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}
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// CreateLoginSource inserts a LoginSource in the DB if not already
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// existing with the given name.
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func CreateLoginSource(source *LoginSource) error {
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has, err := x.Get(&LoginSource{Name: source.Name})
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if err != nil {
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return err
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} else if has {
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return ErrLoginSourceAlreadyExist{source.Name}
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}
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_, err = x.Insert(source)
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if err == nil && source.IsOAuth2() {
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oAuth2Config := source.OAuth2()
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oauth2.RegisterProvider(source.Name, oAuth2Config.Provider, oAuth2Config.ClientID, oAuth2Config.ClientSecret)
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}
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return err
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}
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// LoginSources returns a slice of all login sources found in DB.
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func LoginSources() ([]*LoginSource, error) {
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auths := make([]*LoginSource, 0, 6)
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return auths, x.Find(&auths)
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}
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// GetLoginSourceByID returns login source by given ID.
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func GetLoginSourceByID(id int64) (*LoginSource, error) {
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source := new(LoginSource)
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has, err := x.Id(id).Get(source)
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if err != nil {
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return nil, err
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} else if !has {
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return nil, ErrLoginSourceNotExist{id}
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}
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return source, nil
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}
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// UpdateSource updates a LoginSource record in DB.
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func UpdateSource(source *LoginSource) error {
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_, err := x.Id(source.ID).AllCols().Update(source)
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if err == nil && source.IsOAuth2() {
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oAuth2Config := source.OAuth2()
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oauth2.RemoveProvider(source.Name)
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oauth2.RegisterProvider(source.Name, oAuth2Config.Provider, oAuth2Config.ClientID, oAuth2Config.ClientSecret)
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}
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return err
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}
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// DeleteSource deletes a LoginSource record in DB.
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func DeleteSource(source *LoginSource) error {
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count, err := x.Count(&User{LoginSource: source.ID})
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if err != nil {
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return err
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} else if count > 0 {
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return ErrLoginSourceInUse{source.ID}
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}
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count, err = x.Count(&ExternalLoginUser{LoginSourceID: source.ID})
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if err != nil {
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return err
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} else if count > 0 {
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return ErrLoginSourceInUse{source.ID}
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}
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if source.IsOAuth2() {
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oauth2.RemoveProvider(source.Name)
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}
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_, err = x.Id(source.ID).Delete(new(LoginSource))
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return err
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}
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// CountLoginSources returns number of login sources.
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func CountLoginSources() int64 {
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count, _ := x.Count(new(LoginSource))
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return count
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}
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// .____ ________ _____ __________
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// | | \______ \ / _ \\______ \
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// | | | | \ / /_\ \| ___/
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// | |___ | ` \/ | \ |
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// |_______ \/_______ /\____|__ /____|
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// \/ \/ \/
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func composeFullName(firstname, surname, username string) string {
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switch {
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case len(firstname) == 0 && len(surname) == 0:
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return username
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case len(firstname) == 0:
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return surname
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case len(surname) == 0:
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return firstname
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default:
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return firstname + " " + surname
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}
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}
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// LoginViaLDAP queries if login/password is valid against the LDAP directory pool,
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// and create a local user if success when enabled.
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func LoginViaLDAP(user *User, login, password string, source *LoginSource, autoRegister bool) (*User, error) {
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username, fn, sn, mail, isAdmin, succeed := source.Cfg.(*LDAPConfig).SearchEntry(login, password, source.Type == LoginDLDAP)
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if !succeed {
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// User not in LDAP, do nothing
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return nil, ErrUserNotExist{0, login, 0}
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}
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if !autoRegister {
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return user, nil
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}
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// Fallback.
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if len(username) == 0 {
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username = login
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}
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// Validate username make sure it satisfies requirement.
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if binding.AlphaDashDotPattern.MatchString(username) {
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return nil, fmt.Errorf("Invalid pattern for attribute 'username' [%s]: must be valid alpha or numeric or dash(-_) or dot characters", username)
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}
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if len(mail) == 0 {
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mail = fmt.Sprintf("%s@localhost", username)
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}
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user = &User{
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LowerName: strings.ToLower(username),
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Name: username,
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FullName: composeFullName(fn, sn, username),
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Email: mail,
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LoginType: source.Type,
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LoginSource: source.ID,
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LoginName: login,
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IsActive: true,
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IsAdmin: isAdmin,
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}
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return user, CreateUser(user)
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}
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// _________ __________________________
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// / _____/ / \__ ___/\______ \
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// \_____ \ / \ / \| | | ___/
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// / \/ Y \ | | |
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// /_______ /\____|__ /____| |____|
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// \/ \/
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type smtpLoginAuth struct {
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username, password string
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}
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func (auth *smtpLoginAuth) Start(server *smtp.ServerInfo) (string, []byte, error) {
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return "LOGIN", []byte(auth.username), nil
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}
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func (auth *smtpLoginAuth) Next(fromServer []byte, more bool) ([]byte, error) {
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if more {
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switch string(fromServer) {
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case "Username:":
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return []byte(auth.username), nil
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case "Password:":
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return []byte(auth.password), nil
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}
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}
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return nil, nil
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}
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// SMTP authentication type names.
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const (
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SMTPPlain = "PLAIN"
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SMTPLogin = "LOGIN"
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)
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// SMTPAuths contains available SMTP authentication type names.
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var SMTPAuths = []string{SMTPPlain, SMTPLogin}
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// SMTPAuth performs an SMTP authentication.
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func SMTPAuth(a smtp.Auth, cfg *SMTPConfig) error {
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c, err := smtp.Dial(fmt.Sprintf("%s:%d", cfg.Host, cfg.Port))
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if err != nil {
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return err
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}
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defer c.Close()
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if err = c.Hello("gogs"); err != nil {
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return err
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}
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if cfg.TLS {
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if ok, _ := c.Extension("STARTTLS"); ok {
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if err = c.StartTLS(&tls.Config{
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InsecureSkipVerify: cfg.SkipVerify,
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ServerName: cfg.Host,
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}); err != nil {
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return err
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}
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} else {
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return errors.New("SMTP server unsupports TLS")
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}
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}
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if ok, _ := c.Extension("AUTH"); ok {
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if err = c.Auth(a); err != nil {
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return err
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}
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return nil
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}
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return ErrUnsupportedLoginType
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}
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// LoginViaSMTP queries if login/password is valid against the SMTP,
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// and create a local user if success when enabled.
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func LoginViaSMTP(user *User, login, password string, sourceID int64, cfg *SMTPConfig, autoRegister bool) (*User, error) {
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// Verify allowed domains.
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if len(cfg.AllowedDomains) > 0 {
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idx := strings.Index(login, "@")
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if idx == -1 {
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return nil, ErrUserNotExist{0, login, 0}
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} else if !com.IsSliceContainsStr(strings.Split(cfg.AllowedDomains, ","), login[idx+1:]) {
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return nil, ErrUserNotExist{0, login, 0}
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}
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}
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var auth smtp.Auth
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if cfg.Auth == SMTPPlain {
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auth = smtp.PlainAuth("", login, password, cfg.Host)
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} else if cfg.Auth == SMTPLogin {
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auth = &smtpLoginAuth{login, password}
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} else {
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return nil, errors.New("Unsupported SMTP auth type")
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}
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if err := SMTPAuth(auth, cfg); err != nil {
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// Check standard error format first,
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// then fallback to worse case.
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tperr, ok := err.(*textproto.Error)
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if (ok && tperr.Code == 535) ||
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strings.Contains(err.Error(), "Username and Password not accepted") {
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return nil, ErrUserNotExist{0, login, 0}
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}
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return nil, err
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}
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if !autoRegister {
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return user, nil
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}
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username := login
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idx := strings.Index(login, "@")
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if idx > -1 {
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username = login[:idx]
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}
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user = &User{
|
|
LowerName: strings.ToLower(username),
|
|
Name: strings.ToLower(username),
|
|
Email: login,
|
|
Passwd: password,
|
|
LoginType: LoginSMTP,
|
|
LoginSource: sourceID,
|
|
LoginName: login,
|
|
IsActive: true,
|
|
}
|
|
return user, CreateUser(user)
|
|
}
|
|
|
|
// __________ _____ _____
|
|
// \______ \/ _ \ / \
|
|
// | ___/ /_\ \ / \ / \
|
|
// | | / | \/ Y \
|
|
// |____| \____|__ /\____|__ /
|
|
// \/ \/
|
|
|
|
// LoginViaPAM queries if login/password is valid against the PAM,
|
|
// and create a local user if success when enabled.
|
|
func LoginViaPAM(user *User, login, password string, sourceID int64, cfg *PAMConfig, autoRegister bool) (*User, error) {
|
|
if err := pam.Auth(cfg.ServiceName, login, password); err != nil {
|
|
if strings.Contains(err.Error(), "Authentication failure") {
|
|
return nil, ErrUserNotExist{0, login, 0}
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
if !autoRegister {
|
|
return user, nil
|
|
}
|
|
|
|
user = &User{
|
|
LowerName: strings.ToLower(login),
|
|
Name: login,
|
|
Email: login,
|
|
Passwd: password,
|
|
LoginType: LoginPAM,
|
|
LoginSource: sourceID,
|
|
LoginName: login,
|
|
IsActive: true,
|
|
}
|
|
return user, CreateUser(user)
|
|
}
|
|
|
|
// ________ _____ __ .__ ________
|
|
// \_____ \ / _ \ __ ___/ |_| |__ \_____ \
|
|
// / | \ / /_\ \| | \ __\ | \ / ____/
|
|
// / | \/ | \ | /| | | Y \/ \
|
|
// \_______ /\____|__ /____/ |__| |___| /\_______ \
|
|
// \/ \/ \/ \/
|
|
|
|
// OAuth2Provider describes the display values of a single OAuth2 provider
|
|
type OAuth2Provider struct {
|
|
Name string
|
|
DisplayName string
|
|
Image string
|
|
}
|
|
|
|
// OAuth2Providers contains the map of registered OAuth2 providers in Gitea (based on goth)
|
|
// key is used to map the OAuth2Provider with the goth provider type (also in LoginSource.OAuth2Config.Provider)
|
|
// value is used to store display data
|
|
var OAuth2Providers = map[string]OAuth2Provider{
|
|
"github": {Name: "github", DisplayName: "GitHub", Image: "/img/github.png"},
|
|
}
|
|
|
|
// ExternalUserLogin attempts a login using external source types.
|
|
func ExternalUserLogin(user *User, login, password string, source *LoginSource, autoRegister bool) (*User, error) {
|
|
if !source.IsActived {
|
|
return nil, ErrLoginSourceNotActived
|
|
}
|
|
|
|
switch source.Type {
|
|
case LoginLDAP, LoginDLDAP:
|
|
return LoginViaLDAP(user, login, password, source, autoRegister)
|
|
case LoginSMTP:
|
|
return LoginViaSMTP(user, login, password, source.ID, source.Cfg.(*SMTPConfig), autoRegister)
|
|
case LoginPAM:
|
|
return LoginViaPAM(user, login, password, source.ID, source.Cfg.(*PAMConfig), autoRegister)
|
|
}
|
|
|
|
return nil, ErrUnsupportedLoginType
|
|
}
|
|
|
|
// UserSignIn validates user name and password.
|
|
func UserSignIn(username, password string) (*User, error) {
|
|
var user *User
|
|
if strings.Contains(username, "@") {
|
|
user = &User{Email: strings.ToLower(strings.TrimSpace(username))}
|
|
// check same email
|
|
cnt, err := x.Count(user)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if cnt > 1 {
|
|
return nil, ErrEmailAlreadyUsed{
|
|
Email: user.Email,
|
|
}
|
|
}
|
|
} else {
|
|
user = &User{LowerName: strings.ToLower(strings.TrimSpace(username))}
|
|
}
|
|
|
|
hasUser, err := x.Get(user)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if hasUser {
|
|
switch user.LoginType {
|
|
case LoginNoType, LoginPlain, LoginOAuth2:
|
|
if user.ValidatePassword(password) {
|
|
return user, nil
|
|
}
|
|
|
|
return nil, ErrUserNotExist{user.ID, user.Name, 0}
|
|
|
|
default:
|
|
var source LoginSource
|
|
hasSource, err := x.Id(user.LoginSource).Get(&source)
|
|
if err != nil {
|
|
return nil, err
|
|
} else if !hasSource {
|
|
return nil, ErrLoginSourceNotExist{user.LoginSource}
|
|
}
|
|
|
|
return ExternalUserLogin(user, user.LoginName, password, &source, false)
|
|
}
|
|
}
|
|
|
|
sources := make([]*LoginSource, 0, 5)
|
|
if err = x.UseBool().Find(&sources, &LoginSource{IsActived: true}); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for _, source := range sources {
|
|
if source.IsOAuth2() {
|
|
// don't try to authenticate against OAuth2 sources
|
|
continue
|
|
}
|
|
authUser, err := ExternalUserLogin(nil, username, password, source, true)
|
|
if err == nil {
|
|
return authUser, nil
|
|
}
|
|
|
|
log.Warn("Failed to login '%s' via '%s': %v", username, source.Name, err)
|
|
}
|
|
|
|
return nil, ErrUserNotExist{user.ID, user.Name, 0}
|
|
}
|
|
|
|
// GetActiveOAuth2ProviderLoginSources returns all actived LoginOAuth2 sources
|
|
func GetActiveOAuth2ProviderLoginSources() ([]*LoginSource, error) {
|
|
sources := make([]*LoginSource, 0, 1)
|
|
if err := x.UseBool().Find(&sources, &LoginSource{IsActived: true, Type: LoginOAuth2}); err != nil {
|
|
return nil, err
|
|
}
|
|
return sources, nil
|
|
}
|
|
|
|
// GetActiveOAuth2LoginSourceByName returns a OAuth2 LoginSource based on the given name
|
|
func GetActiveOAuth2LoginSourceByName(name string) (*LoginSource, error) {
|
|
loginSource := &LoginSource{
|
|
Name: name,
|
|
Type: LoginOAuth2,
|
|
IsActived: true,
|
|
}
|
|
|
|
has, err := x.UseBool().Get(loginSource)
|
|
if !has || err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return loginSource, nil
|
|
}
|
|
|
|
// GetActiveOAuth2Providers returns the map of configured active OAuth2 providers
|
|
// key is used as technical name (like in the callbackURL)
|
|
// values to display
|
|
func GetActiveOAuth2Providers() (map[string]OAuth2Provider, error) {
|
|
// Maybe also separate used and unused providers so we can force the registration of only 1 active provider for each type
|
|
|
|
loginSources, err := GetActiveOAuth2ProviderLoginSources()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
providers := make(map[string]OAuth2Provider)
|
|
for _, source := range loginSources {
|
|
providers[source.Name] = OAuth2Providers[source.OAuth2().Provider]
|
|
}
|
|
|
|
return providers, nil
|
|
}
|
|
|
|
// InitOAuth2 initialize the OAuth2 lib and register all active OAuth2 providers in the library
|
|
func InitOAuth2() {
|
|
oauth2.Init()
|
|
loginSources, _ := GetActiveOAuth2ProviderLoginSources()
|
|
|
|
for _, source := range loginSources {
|
|
oAuth2Config := source.OAuth2()
|
|
oauth2.RegisterProvider(source.Name, oAuth2Config.Provider, oAuth2Config.ClientID, oAuth2Config.ClientSecret)
|
|
}
|
|
}
|