mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-29 22:55:52 +08:00
253 lines
7.0 KiB
C++
253 lines
7.0 KiB
C++
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef SRC_HTTP_COOKIEMANAGER_H
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#define SRC_HTTP_COOKIEMANAGER_H
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#include "Common/Parser.h"
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#include "Network/Socket.h"
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#include "Util/TimeTicker.h"
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#include "Util/mini.h"
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#include "Util/util.h"
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#include <memory>
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#include <unordered_map>
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#define COOKIE_DEFAULT_LIFE (7 * 24 * 60 * 60)
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namespace mediakit {
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class HttpCookieManager;
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/**
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* cookie对象，用于保存cookie的一些相关属性
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*/
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class HttpServerCookie : public toolkit::noncopyable {
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public:
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using Ptr = std::shared_ptr<HttpServerCookie>;
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/**
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* 构建cookie
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* @param manager cookie管理者对象
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* @param cookie_name cookie名，例如MY_SESSION
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* @param uid 用户唯一id
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* @param cookie cookie随机字符串
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* @param max_elapsed 最大过期时间，单位秒
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*/
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HttpServerCookie(
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const std::shared_ptr<HttpCookieManager> &manager, const std::string &cookie_name, const std::string &uid,
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const std::string &cookie, uint64_t max_elapsed);
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~HttpServerCookie();
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/**
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* 获取uid
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* @return uid
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*/
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const std::string &getUid() const;
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/**
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* 获取http中Set-Cookie字段的值
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* @param cookie_name 该cookie的名称，譬如 MY_SESSION
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* @param path http访问路径
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* @return 例如 MY_SESSION=XXXXXX;expires=Wed, Jun 12 2019 06:30:48 GMT;path=/index/files/
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*/
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std::string getCookie(const std::string &path) const;
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/**
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* 获取cookie随机字符串
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* @return cookie随机字符串
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*/
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const std::string &getCookie() const;
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/**
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* 获取该cookie名
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* @return
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*/
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const std::string &getCookieName() const;
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/**
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* 更新该cookie的过期时间，可以让此cookie不失效
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*/
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void updateTime();
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/**
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* 判断该cookie是否过期
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* @return
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*/
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bool isExpired();
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/**
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* 设置附加数据
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*/
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void setAttach(std::shared_ptr<void> attach);
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/*
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* 获取附加数据
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*/
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template <class T>
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T& getAttach() {
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return *static_cast<T *>(_attach.get());
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}
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private:
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std::string cookieExpireTime() const;
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private:
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std::string _uid;
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std::string _cookie_name;
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std::string _cookie_uuid;
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uint64_t _max_elapsed;
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toolkit::Ticker _ticker;
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std::shared_ptr<void> _attach;
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std::weak_ptr<HttpCookieManager> _manager;
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};
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/**
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* cookie随机字符串生成器
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*/
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class RandStrGenerator {
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public:
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RandStrGenerator() = default;
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~RandStrGenerator() = default;
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/**
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* 获取不碰撞的随机字符串
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* @return 随机字符串
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*/
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std::string obtain();
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/**
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* 释放随机字符串
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* @param str 随机字符串
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*/
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void release(const std::string &str);
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private:
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std::string obtain_l();
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private:
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//碰撞库
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std::unordered_set<std::string> _obtained;
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//增长index，防止碰撞用
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int _index = 0;
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};
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/**
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* cookie管理器，用于管理cookie的生成以及过期管理，同时实现了同账号异地挤占登录功能
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* 该对象实现了同账号最多登录若干个设备
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*/
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class HttpCookieManager : public std::enable_shared_from_this<HttpCookieManager> {
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public:
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friend class HttpServerCookie;
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using Ptr = std::shared_ptr<HttpCookieManager>;
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~HttpCookieManager();
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/**
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* 获取单例
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*/
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static HttpCookieManager &Instance();
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/**
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* 添加cookie
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* @param cookie_name cookie名，例如MY_SESSION
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* @param uid 用户id，如果为空则为匿名登录
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* @param max_client 该账号最多登录多少个设备
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* @param max_elapsed 该cookie过期时间，单位秒
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* @return cookie对象
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*/
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HttpServerCookie::Ptr addCookie(
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const std::string &cookie_name, const std::string &uid, uint64_t max_elapsed = COOKIE_DEFAULT_LIFE,
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std::shared_ptr<void> attach = nullptr,
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int max_client = 1);
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/**
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* 根据cookie随机字符串查找cookie对象
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* @param cookie_name cookie名，例如MY_SESSION
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* @param cookie cookie随机字符串
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* @return cookie对象，可以为nullptr
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*/
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HttpServerCookie::Ptr getCookie(const std::string &cookie_name, const std::string &cookie);
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/**
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* 从http头中获取cookie对象
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* @param cookie_name cookie名，例如MY_SESSION
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* @param http_header http头
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* @return cookie对象
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*/
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HttpServerCookie::Ptr getCookie(const std::string &cookie_name, const StrCaseMap &http_header);
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/**
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* 根据uid获取cookie
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* @param cookie_name cookie名，例如MY_SESSION
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* @param uid 用户id
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* @return cookie对象
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*/
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HttpServerCookie::Ptr getCookieByUid(const std::string &cookie_name, const std::string &uid);
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/**
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* 删除cookie，用户登出时使用
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* @param cookie cookie对象，可以为nullptr
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* @return
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*/
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bool delCookie(const HttpServerCookie::Ptr &cookie);
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private:
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HttpCookieManager();
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void onManager();
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/**
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* 构造cookie对象时触发，目的是记录某账号下多个cookie
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* @param cookie_name cookie名，例如MY_SESSION
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* @param uid 用户id
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* @param cookie cookie随机字符串
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*/
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void onAddCookie(const std::string &cookie_name, const std::string &uid, const std::string &cookie);
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/**
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* 析构cookie对象时触发
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* @param cookie_name cookie名，例如MY_SESSION
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* @param uid 用户id
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* @param cookie cookie随机字符串
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*/
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void onDelCookie(const std::string &cookie_name, const std::string &uid, const std::string &cookie);
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/**
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* 获取某用户名下最先登录时的cookie，目的是实现某用户下最多登录若干个设备
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* @param cookie_name cookie名，例如MY_SESSION
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* @param uid 用户id
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* @param max_client 最多登录的设备个数
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* @return 最早的cookie随机字符串
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*/
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std::string getOldestCookie(const std::string &cookie_name, const std::string &uid, int max_client = 1);
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/**
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* 删除cookie
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* @param cookie_name cookie名，例如MY_SESSION
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* @param cookie cookie随机字符串
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* @return 成功true
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*/
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bool delCookie(const std::string &cookie_name, const std::string &cookie);
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private:
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std::unordered_map<
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std::string /*cookie_name*/, std::unordered_map<std::string /*cookie*/, HttpServerCookie::Ptr /*cookie_data*/>>
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_map_cookie;
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std::unordered_map<
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std::string /*cookie_name*/,
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std::unordered_map<std::string /*uid*/, std::map<uint64_t /*cookie time stamp*/, std::string /*cookie*/>>>
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_map_uid_to_cookie;
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std::recursive_mutex _mtx_cookie;
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toolkit::Timer::Ptr _timer;
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RandStrGenerator _generator;
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};
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} // namespace mediakit
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#endif // SRC_HTTP_COOKIEMANAGER_H
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