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gitea/modules/auth/sso/basic.go

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Add single sign-on support via SSPI on Windows (#8463) * Add single sign-on support via SSPI on Windows * Ensure plugins implement interface * Ensure plugins implement interface * Move functions used only by the SSPI auth method to sspi_windows.go * Field SSPISeparatorReplacement of AuthenticationForm should not be required via binding, as binding will insist the field is non-empty even if another login type is selected * Fix breaking of oauth authentication on download links. Do not create new session with SSPI authentication on download links. * Update documentation for the new 'SPNEGO with SSPI' login source * Mention in documentation that ROOT_URL should contain the FQDN of the server * Make sure that Contexter is not checking for active login sources when the ORM engine is not initialized (eg. when installing) * Always initialize and free SSO methods, even if they are not enabled, as a method can be activated while the app is running (from Authentication sources) * Add option in SSPIConfig for removing of domains from logon names * Update helper text for StripDomainNames option * Make sure handleSignIn() is called after a new user object is created by SSPI auth method * Remove default value from text of form field helper Co-Authored-By: Lauris BH <lauris@nix.lv> * Remove default value from text of form field helper Co-Authored-By: Lauris BH <lauris@nix.lv> * Remove default value from text of form field helper Co-Authored-By: Lauris BH <lauris@nix.lv> * Only make a query to the DB to check if SSPI is enabled on handlers that need that information for templates * Remove code duplication * Log errors in ActiveLoginSources Co-Authored-By: Lauris BH <lauris@nix.lv> * Revert suffix of randomly generated E-mails for Reverse proxy authentication Co-Authored-By: Lauris BH <lauris@nix.lv> * Revert unneeded white-space change in template Co-Authored-By: Lauris BH <lauris@nix.lv> * Add copyright comments at the top of new files * Use loopback name for randomly generated emails * Add locale tag for the SSPISeparatorReplacement field with proper casing * Revert casing of SSPISeparatorReplacement field in locale file, moving it up, next to other form fields * Update docs/content/doc/features/authentication.en-us.md Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com> * Remove Priority() method and define the order in which SSO auth methods should be executed in one place * Log authenticated username only if it's not empty * Rephrase helper text for automatic creation of users * Return error if more than one active SSPI auth source is found * Change newUser() function to return error, letting caller log/handle the error * Move isPublicResource, isPublicPage and handleSignIn functions outside SSPI auth method to allow other SSO methods to reuse them if needed * Refactor initialization of the list containing SSO auth methods * Validate SSPI settings on POST * Change SSPI to only perform authentication on its own login page, API paths and download links. Leave Toggle middleware to redirect non authenticated users to login page * Make 'Default language' in SSPI config empty, unless changed by admin * Show error if admin tries to add a second authentication source of type SSPI * Simplify declaration of global variable * Rebuild gitgraph.js on Linux * Make sure config values containing only whitespace are not accepted
2019-11-22 18:33:31 -05:00
// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package sso
import (
"strings"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"gitea.com/macaron/macaron"
"gitea.com/macaron/session"
)
// Ensure the struct implements the interface.
var (
_ SingleSignOn = &Basic{}
)
// Basic implements the SingleSignOn interface and authenticates requests (API requests
// only) by looking for Basic authentication data or "x-oauth-basic" token in the "Authorization"
// header.
type Basic struct {
}
// Init does nothing as the Basic implementation does not need to allocate any resources
func (b *Basic) Init() error {
return nil
}
// Free does nothing as the Basic implementation does not have to release any resources
func (b *Basic) Free() error {
return nil
}
// IsEnabled returns true as this plugin is enabled by default and its not possible to disable
// it from settings.
func (b *Basic) IsEnabled() bool {
return setting.Service.EnableBasicAuth
}
// VerifyAuthData extracts and validates Basic data (username and password/token) from the
// "Authorization" header of the request and returns the corresponding user object for that
// name/token on successful validation.
// Returns nil if header is empty or validation fails.
func (b *Basic) VerifyAuthData(ctx *macaron.Context, sess session.Store) *models.User {
baHead := ctx.Req.Header.Get("Authorization")
if len(baHead) == 0 {
return nil
}
auths := strings.Fields(baHead)
if len(auths) != 2 || auths[0] != "Basic" {
return nil
}
var u *models.User
uname, passwd, _ := base.BasicAuthDecode(auths[1])
// Check if username or password is a token
isUsernameToken := len(passwd) == 0 || passwd == "x-oauth-basic"
// Assume username is token
authToken := uname
if !isUsernameToken {
// Assume password is token
authToken = passwd
}
uid := CheckOAuthAccessToken(authToken)
if uid != 0 {
var err error
ctx.Data["IsApiToken"] = true
u, err = models.GetUserByID(uid)
if err != nil {
log.Error("GetUserByID: %v", err)
return nil
}
}
token, err := models.GetAccessTokenBySHA(authToken)
if err == nil {
if isUsernameToken {
u, err = models.GetUserByID(token.UID)
if err != nil {
log.Error("GetUserByID: %v", err)
return nil
}
} else {
u, err = models.GetUserByName(uname)
if err != nil {
log.Error("GetUserByID: %v", err)
return nil
}
if u.ID != token.UID {
return nil
}
}
token.UpdatedUnix = timeutil.TimeStampNow()
if err = models.UpdateAccessToken(token); err != nil {
log.Error("UpdateAccessToken: %v", err)
}
} else if !models.IsErrAccessTokenNotExist(err) && !models.IsErrAccessTokenEmpty(err) {
log.Error("GetAccessTokenBySha: %v", err)
}
if u == nil {
u, err = models.UserSignIn(uname, passwd)
if err != nil {
if !models.IsErrUserNotExist(err) {
log.Error("UserSignIn: %v", err)
}
return nil
}
} else {
ctx.Data["IsApiToken"] = true
}
return u
}