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user.go
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user.go
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/*
* Copyright 2022-2024 Thorsten A. Knieling
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
*/
package clu
import (
"net/mail"
"os"
"sync"
"time"
"github.com/tknie/flynn"
"github.com/tknie/flynn/common"
"github.com/tknie/log"
"github.com/tknie/services"
"github.com/tknie/services/auth"
)
var userTableName = ""
var disableUser = true
var userDbRef *common.Reference
var userDbPassword = ""
// DefaultRole default role for automatic added user
const DefaultRole = "Reader"
// var userStoreID common.RegDbID
var userFieldList = []string{"Name", "Created", "LastLogin", "Permission"}
var userFieldListUpdate = []string{"Created", "LastLogin"}
type storeUserInfo struct {
stored bool
created time.Time
userInfo *auth.UserInfo
}
var userInfoMap = sync.Map{} // make(map[string]*storeUserInfo)
var userLock sync.Mutex
// InitUserInfo init user info evaluation
func InitUserInfo(ref *common.Reference, password, tablename string) {
if ref == nil {
disableUser = true
return
}
userDbRef = ref
userDbPassword = password
if userDbPassword == "" {
userDbPassword = os.Getenv("REST_USER_LOG_PASS")
}
userTableName = tablename
userStoreID, err := openUserStore()
if err != nil {
services.ServerMessage("Storing audit data error: %v", err)
return
}
defer userStoreID.FreeHandler()
defer userStoreID.Close()
log.Log.Debugf("Receive user store handler %s", userStoreID)
disableUser = false
services.ServerMessage("Storing audit data to table '%s'", userTableName)
go updaterUserInfo()
dbTables := flynn.Maps()
for _, d := range dbTables {
if d == userTableName {
return
}
}
su := &auth.UserInfo{}
err = userStoreID.CreateTable(userTableName, su)
if err != nil {
services.ServerMessage("Database user store creating failed: %v", err)
return
}
services.ServerMessage("Database user store created successfully")
}
func updaterUserInfo() {
for {
log.Log.Debugf("Waiting user info for updates or remove")
select {
case <-time.After(30 * time.Second):
timeRange := time.Now().Add(time.Duration(-2) * time.Minute)
log.Log.Debugf("Shift working 30 seconds (user info)")
userInfoMap.Range(func(key, value any) bool {
st := value.(*storeUserInfo)
if st.userInfo.LastLogin.Before(timeRange) {
userInfoMap.Delete(key)
}
return true
})
}
}
}
func openUserStore() (common.RegDbID, error) {
if userDbPassword == "" {
userDbPassword = os.Getenv("REST_USER_LOG_PASS")
}
userStoreID, err := flynn.Handler(userDbRef, userDbPassword)
if err != nil {
services.ServerMessage("Register error log: %v", err)
return 0, err
}
return userStoreID, nil
}
// QueryUser query user information
func QueryUser(user string) *auth.UserInfo {
if disableUser {
return nil
}
if u, ok := userInfoMap.Load(user); ok {
return u.(*storeUserInfo).userInfo
}
userLock.Lock()
defer userLock.Unlock()
userStoreID, err := openUserStore()
if err != nil {
return nil
}
defer userStoreID.FreeHandler()
defer userStoreID.Close()
var userInfo *auth.UserInfo
count := 0
q := &common.Query{TableName: userTableName,
Search: "name='" + user + "'",
DataStruct: &auth.UserInfo{},
Fields: []string{"*"}}
_, err = userStoreID.Query(q, func(search *common.Query, result *common.Result) error {
count++
if userInfo == nil {
userInfo = result.Data.(*auth.UserInfo)
} else {
services.ServerMessage("%s not unique %03d", user, count)
}
return nil
})
if err != nil {
return nil
}
if userInfo != nil {
log.Log.Debugf("Create user info storage %#v", userInfo)
userInfoMap.Store(userInfo.User, &storeUserInfo{true, time.Now(), userInfo})
return userInfo
}
return nil
}
// CheckUserExist check user already exists and create if not available
func CheckUserExist(user string) *auth.UserInfo {
userInfo := QueryUser(user)
if userInfo == nil {
log.Log.Debugf("No user %s in user info found", user)
userInfo = &auth.UserInfo{User: user, Created: time.Now(), LastLogin: time.Now(),
Permission: &auth.User{Name: DefaultRole, Read: "*", Write: ""}}
if _, err := mail.ParseAddress(user); err == nil {
userInfo.EMail = user
}
log.Log.Debugf("Create user info new %#v", userInfo)
userInfoMap.Store(userInfo.User, &storeUserInfo{false, time.Now(), userInfo})
} else {
log.Log.Debugf("User info %s found: %#v / %#v", user, userInfo, userInfo.Permission)
}
return userInfo
}
// AddUserInfo add user if not already exists and create if not available
func AddUserInfo(userInfo *auth.UserInfo) error {
if disableUser {
return nil
}
if u, ok := userInfoMap.Load(userInfo.User); ok {
userLock.Lock()
defer userLock.Unlock()
userStoreID, err := openUserStore()
if err != nil {
return nil
}
defer userStoreID.FreeHandler()
defer userStoreID.Close()
insert := &common.Entries{Fields: userFieldListUpdate, DataStruct: userInfo}
insert.Values = [][]any{{userInfo}}
sui := u.(*storeUserInfo)
if sui.stored {
insert.Fields = userFieldListUpdate
log.Log.Debugf("Update value %#v", userInfo)
insert.Update = []string{"user='" + userInfo.User + "'"}
_, _, err := userStoreID.Update(userTableName, insert)
if err != nil {
log.Log.Errorf("Error updating user info: %v", err)
return err
}
} else {
insert.Fields = userFieldList
log.Log.Debugf("Insert value %#v", userInfo)
_, err := userStoreID.Insert(userTableName, insert)
if err != nil {
log.Log.Errorf("Error inserting user info: %v", err)
// Could be an outage of database, refresh user information
CheckUserExist(userInfo.User)
return err
}
}
err = userStoreID.Commit()
if err != nil {
log.Log.Errorf("Error commiting user info: %v", err)
return err
}
sui.stored = true
}
return nil
}