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（day58）十、Cookie、Session、Token、Django中间件

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[toc] 一、Cookie （一）由来 HTTP协议的无状态特性导致每次的请求都是独立的，即客户端和服务器在某次会话中产生的数据不会被保存，因此产生了Cookie，用来保存客户端的用户状态（二）什么是Cookie Cookie具体是指服务器发送出来存储在浏览器上的一组组键值对，下次访问服务器时浏览器会自动携带这些信息，以便服务器通过Cookie提取有用信息从而判断访问者 Cookie最大支持4096字节，保存在客户端，安全性低（三）Django中操作Cookie （1）设置Cookie 普通 obj.set_cookie(key,value,...) obj为HttpResponse或render或redirect实例化的对象加盐 obj.set_signed_cookie(key,value,salt='加密盐', max_age=None, ...) obj为HttpResponse或render或redirect实例化的对象参数 key：键 value：值 max_age：超时时间，以秒为单位，不能给IE设置cookie expires：超时时间，以秒为单位，可以给IE设置cookie path：cookie生效的路径，/表示根路径，可以被任何URL页面访问 domain：cookie生效的域名 secure：布尔值，是否为HTTPS传输 httponly：布尔值

表达式求值相关算法

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实现对一个数学表达式的求值，例如： 1+2*(3+4) 这个表达式的值为 15 这个问题主要要分为如下几个步骤: 语法分析: 将字符串表达式转化为数字和操作符的 token 数组， ['1', '+', '2', '*', '(', '3', '+', '4', ')'] 转逆波兰表达式: 将中缀表达式转后缀表达式， ['1', '2', '3', '4', '+', '*', '+'] 逆波兰表达式求值: 15 逆波兰表达式转二叉树: 条件表达式中，二叉树的求值能提前返回，能比逆波兰表达式计算量更少语法分析 def tokenizer ( expr ) : l = len ( expr ) i = 0 tokens = [ ] while i < l : while expr [ i ] == ' ' : i += 1 if is_operator ( expr [ i ] ) : if i + 1 == l : return None if expr [ i ] == '-' : if tokens and ( not is_operator ( tokens [ - 1 ] ) and not tokens [ - 1 ] == '(' ) : tokens . append ( expr [ i ] ) i += 1 else : j = i + 1 while j <

RESTFul架构权限设计

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1 用户权限认证后获取服务端的token，将token存入客户端cookie中。 2 将cookie放入客户端请求页面的头部信息 X-CSRF-TOKEN中示例代码 <!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="csrf-token" content="abcd"> <title>Document</title> </head> <body> <script src="//cdn.bootcss.com/jquery/2.2.1/jquery.js"> </script> <script> $(function(){ alert('ready'); $.ajaxSetup({ headers: { 'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content') } }); $.post('test_token.php',{username:"lilu"},function(){ alert('back'); }); }); </script> </body> </html> 3 服务端验证token function get_all_headers() { $headers = array(); foreach($

Forbidden (CSRF token missing or incorrect.):

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　　　　CSRF令牌失效或丢失，Ajax请求页面报错（403 Forbidden ） csrftoken存在页面响应为CSRF验证失败请求被中断，经过测试，该错误并非是没有在表单中加入{% csrf_token%} 导致【试过】刷新dns缓存依然无法解决该问题，　　　解决：检查setting配置中 'django.middleware.csrf.CsrfViewMiddleware', 在浏览器隐私中清除cookie，【无效】刷新dns【无效】最后解决方案：在引用js之前加入Ajax启动项，之前曾经有一个启动项的，但是莫名其妙失效 <script> 　　$.ajaxSetup({ 　　　　data: {csrfmiddlewaretoken: '{{ csrf_token }}'} 　　}) </script> 来源： https://www.cnblogs.com/hqc-for-s/p/12013193.html

jumserver 3.0安装及采坑记录

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参考 https://blog.51cto.com/14226596/2420441 以及官方文档 https://www.jishuchi.com/read/Jumpserver-148/2102 补充笔者采坑处理 1.安装python3环境 1>更新epel-release ＄yum install -y python36 python36-devel python36-pip 2>安装python后，还要修改以下两个文件内容：　　a）/usr/bin/yum 　　将第一行 #！/usr/bin/yum修改为：#!/usr/bin/python2.7 　　b） /usr/libexec/urlgrabber-ext-down 　　将第一行#!/usr/bin/python修改为了#!/usr/bin/python2.7 再使用yum进行后面的安装 2.安装redis #1.检查是否有redis yum 源　　yum install redis #2.下载fedora的epel仓库　　yum install epel-release #3.安装redis数据库　　yum install redis #4.安装完毕后，使用下面的命令启动redis服务　　service redis start 　　service redis stop #查看redis进程　

Facebook App Uncaught OAuthException: An active access token must be used to query information about the current user. thrown

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问题 Hello I am trying to post to the wall of a user but the following error occurs: Uncaught OAuthException: An active access token must be used to query information about the current user. thrown .... My facebook script is: $appId = 'xxxxxx'; //change as necessary $appUrl = "xxxxx"; //change as necessary $baseUrl = "xxxxx/"; //change as necessary // Create our Application instance. $facebook = new Facebook(array( 'appId' => $appId, 'secret' => 'xxxxxx', //change as necessary 'cookie' => true, ))

Swift client and root SSL certificate authentication

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问题 Integrating get token api of QLIK server with ssl certificate but after performing task I am getting error like this - " finished with error - code: -999 " // Your hostname and endpoint let hostname = "YOUR_HOST_NAME" let endpoint = "YOUR_ENDPOINT" let cert = "YOUR_CERT" // e.g. for cert.der, this should just be "cert" // Set up certificates let pathToCert = Bundle.main.path(forResource: cert, ofType: "der") let localCertificate = NSData(contentsOfFile: pathToCert!) let certificates =

Is there a way to set a token for another process?

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问题 There is SetThreadToken() function but no such function as "SetProcessToken()". Is there a way to set a token for another process? How to write "SetProcessToken()"? 回答1: Yes, you can, using the undocumented NtSetInformationProcess function, however once the process has started running the process token is locked and can no longer be modified. You must therefore start the process with the CREATE_SUSPENDED creation flag, set the process token, then resume the process using ResumeThread() . In

How secure is JWT

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问题 I know this question is not anything new, possibly already been discuss all over the internet. I'm new to it but after some study, I agree that it is safe as anonymous could sniff the Token but unable to append anything on it. I'm planning to store JWT in HTML5Storage, and decode the payload for some in-sensitive information: DisplayName, email_address, and role_info and etc. Here is my question, could anonymous sniff my JWT Token and act on-behalf of me? If that is possible, how can I avoid

Forgotten password scenario - how to create a token

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问题 I would like to implement a forgotten password scenario in an web application. The system will send out an email to the user containing a unique url that the user can hit to allow them to reset their password. There is loads of guidance on this online. The following is a good linke suggesting how to implement this. Best way of doing code for "Forgotten Password" The part I do not understand fully is the token generation. What does this mean?? Is this just a guid (or random string) that is

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