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package SsoUtil
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import (
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"dsBigData/Utils/ConfigUtil"
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"dsBigData/Utils/RedisUtil"
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"encoding/base64"
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"github.com/gin-gonic/gin"
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"github.com/gomodule/redigo/redis"
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"github.com/sirupsen/logrus"
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"strconv"
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"strings"
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)
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/**
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功能：检查是不是合法用户
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作者：黄海
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时间：2020-02-22
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*/
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func IsAuthority(c *gin.Context) (bool, string) {
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//检查Header头中是不是存在ds_sso_sessionid,就是说，如果客户端不支持Cookie(比如手机)，可以在Header中构建ds_sso_sessionid
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sessionId := ""
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//从 Header中获取会话ID
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sessionId = c.Request.Header.Get(ConfigUtil.SessionId)
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//如果没有找到，就到 cookie里继续寻找
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if len(sessionId) == 0 {
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cookie, e := c.Request.Cookie(ConfigUtil.SessionId)
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if e == nil { //如果成功获取到的话
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sessionId = cookie.Value
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}
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}
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//如果两个位置都没有找到
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if len(sessionId) == 0 {
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return false, ""
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} else { //有这个值，判断一下是不是正确
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_map := RedisUtil.HGETALL(ConfigUtil.SessionId + "_" + sessionId)
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if len(_map) == 0 {
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//清除非法cookie，资料参考：https://www.tizi365.com/archives/273.html
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c.SetCookie(ConfigUtil.SessionId, "", -1, "/", "", false, true)
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return false, sessionId
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} else {
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return true, sessionId
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}
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}
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}
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/**
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功能：判断当前登录人员是不是处于登录状态
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作者：黄海
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时间：2020-02-25
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*/
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func IsLoginStatus(username string) (bool, string) {
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var value = ""
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var r = true
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value, err := redis.String(RedisUtil.GET(ConfigUtil.SearchSessionIdPrefix + username))
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if err != nil {
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r = false
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}
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return r, value
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}
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/**
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功能：写入统一认证的信息
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作者：黄海
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时间：2020-02-22
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*/
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func WriteSsoInfo(c *gin.Context, device string, identityId int64, personId int64, username string, personName string, dsSsoSessionid string) {
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//下面应该是双向的redis存储，即：（1）通过登录名能找到对应的会话ID，（2）通过会话ID，可以解析出是哪种设备，哪个身份，哪个人员ID
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//一、写入登录名与会话的对应关系,由四部分组成，前缀+设备类型+身份+人员编号,通过这个键值可以查找到对应的会话
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SearchSsoKey := ConfigUtil.SearchSessionIdPrefix + "_" + device + "_" + strconv.FormatInt(identityId, 10) + "_" + strconv.FormatInt(personId, 10)
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//写入redis
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RedisUtil.SET(SearchSsoKey, ConfigUtil.SessionId+"_"+dsSsoSessionid)
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//加上过期时间
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RedisUtil.EXPIRE(SearchSsoKey)
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//二、写入SESSION_ID
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_map := make(map[string]interface{})
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_map["device"] = device
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_map["identity_id"] = identityId
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_map["person_id"] = personId
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_map["username"] = username
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_map["person_name"] = personName
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RedisUtil.HMSET(ConfigUtil.SessionId+"_"+dsSsoSessionid, _map)
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//加上过期时间
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RedisUtil.EXPIRE(ConfigUtil.SessionId + "_" + dsSsoSessionid)
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//三、写入主域的COOKIE值
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c.SetCookie(ConfigUtil.SessionId, dsSsoSessionid, 0, "/", "", false, true)
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}
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/**
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功能: 清理统一认证的登录信息，包括清理cookie+redis缓存
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作者：黄海
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时间：2020-02-22
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*/
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func ClearSsoInfo(sessionId string, c *gin.Context) string {
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//一、删除人员与 sessionId的映射关系
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DeletePersonSessionReleation(sessionId)
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//二、删除redis中的会话id
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DeleteSessionId(sessionId)
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//三、清除cookie
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deleteSsoCookie(c)
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return sessionId
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}
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/**
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功能：删除人员与会话的映射关系
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作者：黄海
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时间：2020-02-25
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*/
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func DeletePersonSessionReleation(sessionId string) {
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//一、删除人员与 sessionId的映射关系
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var identityId = -1
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var personId = -1
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var deviceId = -1
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deviceId, identityId, personId = AnalyzeSessionId(sessionId) //通过会话ID获取到人员的信息
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//删除人员与会话的对应关系
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SearchSsoKey := ConfigUtil.SearchSessionIdPrefix + "_" + strconv.Itoa(deviceId) + "_" + strconv.Itoa(identityId) + "_" + strconv.Itoa(personId)
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RedisUtil.DEL(SearchSsoKey)
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}
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/**
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功能：解析SessionId的内容，换算出设备，身份和人员ID
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作者：黄海
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时间：2020-02-25
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*/
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func AnalyzeSessionId(sessionId string) (int, int, int) {
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var identityId = -1
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var personId = -1
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var deviceId = -1
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r, err := base64.RawURLEncoding.DecodeString(sessionId)
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if err != nil {
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logrus.Errorln(err)
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} else {
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s := string(r)
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array := strings.Split(s, "_")
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if len(array) > 1 {
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deviceId, _ = strconv.Atoi(array[0])
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identityId, _ = strconv.Atoi(array[1])
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personId, _ = strconv.Atoi(array[2])
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}
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}
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return deviceId, identityId, personId
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}
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/**
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功能：删除redis中的会话id
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作者：黄海
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时间：2020-02-25
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*/
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func DeleteSessionId(sessionId string) {
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//删除redis中的记录
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RedisUtil.DEL(ConfigUtil.SessionId + "_" + sessionId)
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}
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/**
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功能：读取统一认证的cookie值
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作者：黄海
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时间：2020-02-22
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*/
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func ReadSsoCookie(c *gin.Context) string {
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cookie, e := c.Request.Cookie(ConfigUtil.SessionId)
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if e == nil {
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return cookie.Value
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} else {
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return ""
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}
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}
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/**
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功能：删除统一认证的cookie信息
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作者：黄海
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时间：2020-02-22
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*/
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func deleteSsoCookie(c *gin.Context) {
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c.SetCookie(ConfigUtil.SessionId, "", -1, "/", "", false, true)
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}
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