142 lines
4.2 KiB
Go
142 lines
4.2 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package auth
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import (
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"net/http"
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"strings"
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actions_model "code.gitea.io/gitea/models/actions"
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auth_model "code.gitea.io/gitea/models/auth"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/base"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/timeutil"
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"code.gitea.io/gitea/modules/web/middleware"
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)
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// Ensure the struct implements the interface.
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var (
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_ Method = &Basic{}
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)
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// BasicMethodName is the constant name of the basic authentication method
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const BasicMethodName = "basic"
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// Basic implements the Auth interface and authenticates requests (API requests
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// only) by looking for Basic authentication data or "x-oauth-basic" token in the "Authorization"
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// header.
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type Basic struct{}
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// Name represents the name of auth method
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func (b *Basic) Name() string {
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return BasicMethodName
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}
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// Verify extracts and validates Basic data (username and password/token) from the
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// "Authorization" header of the request and returns the corresponding user object for that
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// name/token on successful validation.
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// Returns nil if header is empty or validation fails.
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func (b *Basic) Verify(req *http.Request, w http.ResponseWriter, store DataStore, sess SessionStore) (*user_model.User, error) {
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// Basic authentication should only fire on API, Download or on Git or LFSPaths
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if !middleware.IsAPIPath(req) && !isContainerPath(req) && !isAttachmentDownload(req) && !isGitRawReleaseOrLFSPath(req) {
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return nil, nil
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}
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baHead := req.Header.Get("Authorization")
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if len(baHead) == 0 {
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return nil, nil
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}
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auths := strings.SplitN(baHead, " ", 2)
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if len(auths) != 2 || (strings.ToLower(auths[0]) != "basic") {
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return nil, nil
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}
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uname, passwd, _ := base.BasicAuthDecode(auths[1])
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// Check if username or password is a token
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isUsernameToken := len(passwd) == 0 || passwd == "x-oauth-basic"
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// Assume username is token
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authToken := uname
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if !isUsernameToken {
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log.Trace("Basic Authorization: Attempting login for: %s", uname)
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// Assume password is token
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authToken = passwd
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} else {
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log.Trace("Basic Authorization: Attempting login with username as token")
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}
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// check oauth2 token
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uid := CheckOAuthAccessToken(req.Context(), authToken)
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if uid != 0 {
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log.Trace("Basic Authorization: Valid OAuthAccessToken for user[%d]", uid)
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u, err := user_model.GetUserByID(req.Context(), uid)
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if err != nil {
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log.Error("GetUserByID: %v", err)
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return nil, err
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}
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store.GetData()["IsApiToken"] = true
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return u, nil
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}
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// check personal access token
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token, err := auth_model.GetAccessTokenBySHA(req.Context(), authToken)
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if err == nil {
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log.Trace("Basic Authorization: Valid AccessToken for user[%d]", uid)
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u, err := user_model.GetUserByID(req.Context(), token.UID)
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if err != nil {
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log.Error("GetUserByID: %v", err)
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return nil, err
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}
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token.UpdatedUnix = timeutil.TimeStampNow()
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if err = auth_model.UpdateAccessToken(req.Context(), token); err != nil {
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log.Error("UpdateAccessToken: %v", err)
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}
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store.GetData()["IsApiToken"] = true
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store.GetData()["ApiTokenScope"] = token.Scope
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return u, nil
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} else if !auth_model.IsErrAccessTokenNotExist(err) && !auth_model.IsErrAccessTokenEmpty(err) {
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log.Error("GetAccessTokenBySha: %v", err)
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}
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// check task token
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task, err := actions_model.GetRunningTaskByToken(req.Context(), authToken)
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if err == nil && task != nil {
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log.Trace("Basic Authorization: Valid AccessToken for task[%d]", task.ID)
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store.GetData()["IsActionsToken"] = true
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store.GetData()["ActionsTaskID"] = task.ID
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return user_model.NewActionsUser(), nil
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}
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if !setting.Service.EnableBasicAuth {
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return nil, nil
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}
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log.Trace("Basic Authorization: Attempting SignIn for %s", uname)
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u, source, err := UserSignIn(req.Context(), uname, passwd)
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if err != nil {
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if !user_model.IsErrUserNotExist(err) {
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log.Error("UserSignIn: %v", err)
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}
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return nil, err
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}
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if skipper, ok := source.Cfg.(LocalTwoFASkipper); ok && skipper.IsSkipLocalTwoFA() {
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store.GetData()["SkipLocalTwoFA"] = true
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}
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log.Trace("Basic Authorization: Logged in user %-v", u)
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return u, nil
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}
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