gitea/modules/auth/auth.go

370 lines
9.7 KiB
Go

// 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 auth
import (
"reflect"
"strings"
"time"
"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"
"code.gitea.io/gitea/modules/validation"
"gitea.com/macaron/binding"
"gitea.com/macaron/macaron"
"gitea.com/macaron/session"
gouuid "github.com/satori/go.uuid"
"github.com/unknwon/com"
)
// IsAPIPath if URL is an api path
func IsAPIPath(url string) bool {
return strings.HasPrefix(url, "/api/")
}
// IsAttachmentDownload check if request is a file download (GET) with URL to an attachment
func IsAttachmentDownload(ctx *macaron.Context) bool {
return strings.HasPrefix(ctx.Req.URL.Path, "/attachments/") && ctx.Req.Method == "GET"
}
// SignedInID returns the id of signed in user.
func SignedInID(ctx *macaron.Context, sess session.Store) int64 {
if !models.HasEngine {
return 0
}
// Check access token.
if IsAPIPath(ctx.Req.URL.Path) || IsAttachmentDownload(ctx) {
tokenSHA := ctx.Query("token")
if len(tokenSHA) == 0 {
tokenSHA = ctx.Query("access_token")
}
if len(tokenSHA) == 0 {
// Well, check with header again.
auHead := ctx.Req.Header.Get("Authorization")
if len(auHead) > 0 {
auths := strings.Fields(auHead)
if len(auths) == 2 && (auths[0] == "token" || strings.ToLower(auths[0]) == "bearer") {
tokenSHA = auths[1]
}
}
}
// Let's see if token is valid.
if len(tokenSHA) > 0 {
if strings.Contains(tokenSHA, ".") {
uid := CheckOAuthAccessToken(tokenSHA)
if uid != 0 {
ctx.Data["IsApiToken"] = true
}
return uid
}
t, err := models.GetAccessTokenBySHA(tokenSHA)
if err != nil {
if models.IsErrAccessTokenNotExist(err) || models.IsErrAccessTokenEmpty(err) {
log.Error("GetAccessTokenBySHA: %v", err)
}
return 0
}
t.UpdatedUnix = timeutil.TimeStampNow()
if err = models.UpdateAccessToken(t); err != nil {
log.Error("UpdateAccessToken: %v", err)
}
ctx.Data["IsApiToken"] = true
return t.UID
}
}
uid := sess.Get("uid")
if uid == nil {
return 0
} else if id, ok := uid.(int64); ok {
return id
}
return 0
}
// CheckOAuthAccessToken returns uid of user from oauth token token
func CheckOAuthAccessToken(accessToken string) int64 {
// JWT tokens require a "."
if !strings.Contains(accessToken, ".") {
return 0
}
token, err := models.ParseOAuth2Token(accessToken)
if err != nil {
log.Trace("ParseOAuth2Token: %v", err)
return 0
}
var grant *models.OAuth2Grant
if grant, err = models.GetOAuth2GrantByID(token.GrantID); err != nil || grant == nil {
return 0
}
if token.Type != models.TypeAccessToken {
return 0
}
if token.ExpiresAt < time.Now().Unix() || token.IssuedAt > time.Now().Unix() {
return 0
}
return grant.UserID
}
// SignedInUser returns the user object of signed user.
// It returns a bool value to indicate whether user uses basic auth or not.
func SignedInUser(ctx *macaron.Context, sess session.Store) (*models.User, bool) {
if !models.HasEngine {
return nil, false
}
if uid := SignedInID(ctx, sess); uid > 0 {
user, err := models.GetUserByID(uid)
if err == nil {
return user, false
} else if !models.IsErrUserNotExist(err) {
log.Error("GetUserById: %v", err)
}
}
if setting.Service.EnableReverseProxyAuth {
webAuthUser := ctx.Req.Header.Get(setting.ReverseProxyAuthUser)
if len(webAuthUser) > 0 {
u, err := models.GetUserByName(webAuthUser)
if err != nil {
if !models.IsErrUserNotExist(err) {
log.Error("GetUserByName: %v", err)
return nil, false
}
// Check if enabled auto-registration.
if setting.Service.EnableReverseProxyAutoRegister {
email := gouuid.NewV4().String() + "@localhost"
if setting.Service.EnableReverseProxyEmail {
webAuthEmail := ctx.Req.Header.Get(setting.ReverseProxyAuthEmail)
if len(webAuthEmail) > 0 {
email = webAuthEmail
}
}
u := &models.User{
Name: webAuthUser,
Email: email,
Passwd: webAuthUser,
IsActive: true,
}
if err = models.CreateUser(u); err != nil {
// FIXME: should I create a system notice?
log.Error("CreateUser: %v", err)
return nil, false
}
return u, false
}
}
return u, false
}
}
// Check with basic auth.
baHead := ctx.Req.Header.Get("Authorization")
if len(baHead) > 0 {
auths := strings.Fields(baHead)
if len(auths) == 2 && auths[0] == "Basic" {
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, false
}
}
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, false
}
} else {
u, err = models.GetUserByName(uname)
if err != nil {
log.Error("GetUserByID: %v", err)
return nil, false
}
if u.ID != token.UID {
return nil, false
}
}
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, false
}
} else {
ctx.Data["IsApiToken"] = true
}
return u, true
}
}
return nil, false
}
// Form form binding interface
type Form interface {
binding.Validator
}
func init() {
binding.SetNameMapper(com.ToSnakeCase)
}
// AssignForm assign form values back to the template data.
func AssignForm(form interface{}, data map[string]interface{}) {
typ := reflect.TypeOf(form)
val := reflect.ValueOf(form)
if typ.Kind() == reflect.Ptr {
typ = typ.Elem()
val = val.Elem()
}
for i := 0; i < typ.NumField(); i++ {
field := typ.Field(i)
fieldName := field.Tag.Get("form")
// Allow ignored fields in the struct
if fieldName == "-" {
continue
} else if len(fieldName) == 0 {
fieldName = com.ToSnakeCase(field.Name)
}
data[fieldName] = val.Field(i).Interface()
}
}
func getRuleBody(field reflect.StructField, prefix string) string {
for _, rule := range strings.Split(field.Tag.Get("binding"), ";") {
if strings.HasPrefix(rule, prefix) {
return rule[len(prefix) : len(rule)-1]
}
}
return ""
}
// GetSize get size int form tag
func GetSize(field reflect.StructField) string {
return getRuleBody(field, "Size(")
}
// GetMinSize get minimal size in form tag
func GetMinSize(field reflect.StructField) string {
return getRuleBody(field, "MinSize(")
}
// GetMaxSize get max size in form tag
func GetMaxSize(field reflect.StructField) string {
return getRuleBody(field, "MaxSize(")
}
// GetInclude get include in form tag
func GetInclude(field reflect.StructField) string {
return getRuleBody(field, "Include(")
}
func validate(errs binding.Errors, data map[string]interface{}, f Form, l macaron.Locale) binding.Errors {
if errs.Len() == 0 {
return errs
}
data["HasError"] = true
// If the field with name errs[0].FieldNames[0] is not found in form
// somehow, some code later on will panic on Data["ErrorMsg"].(string).
// So initialize it to some default.
data["ErrorMsg"] = l.Tr("form.unknown_error")
AssignForm(f, data)
typ := reflect.TypeOf(f)
val := reflect.ValueOf(f)
if typ.Kind() == reflect.Ptr {
typ = typ.Elem()
val = val.Elem()
}
if field, ok := typ.FieldByName(errs[0].FieldNames[0]); ok {
fieldName := field.Tag.Get("form")
if fieldName != "-" {
data["Err_"+field.Name] = true
trName := field.Tag.Get("locale")
if len(trName) == 0 {
trName = l.Tr("form." + field.Name)
} else {
trName = l.Tr(trName)
}
switch errs[0].Classification {
case binding.ERR_REQUIRED:
data["ErrorMsg"] = trName + l.Tr("form.require_error")
case binding.ERR_ALPHA_DASH:
data["ErrorMsg"] = trName + l.Tr("form.alpha_dash_error")
case binding.ERR_ALPHA_DASH_DOT:
data["ErrorMsg"] = trName + l.Tr("form.alpha_dash_dot_error")
case validation.ErrGitRefName:
data["ErrorMsg"] = trName + l.Tr("form.git_ref_name_error")
case binding.ERR_SIZE:
data["ErrorMsg"] = trName + l.Tr("form.size_error", GetSize(field))
case binding.ERR_MIN_SIZE:
data["ErrorMsg"] = trName + l.Tr("form.min_size_error", GetMinSize(field))
case binding.ERR_MAX_SIZE:
data["ErrorMsg"] = trName + l.Tr("form.max_size_error", GetMaxSize(field))
case binding.ERR_EMAIL:
data["ErrorMsg"] = trName + l.Tr("form.email_error")
case binding.ERR_URL:
data["ErrorMsg"] = trName + l.Tr("form.url_error")
case binding.ERR_INCLUDE:
data["ErrorMsg"] = trName + l.Tr("form.include_error", GetInclude(field))
case validation.ErrGlobPattern:
data["ErrorMsg"] = trName + l.Tr("form.glob_pattern_error", errs[0].Message)
default:
data["ErrorMsg"] = l.Tr("form.unknown_error") + " " + errs[0].Classification
}
return errs
}
}
return errs
}