captcha

Pls add captcha field to this DotNetNuke form and send results to email

由 只愿长相守 提交于 2019-12-10 12:35:48
问题 I have this form which I need the resulting data entered by user to be sent to my email address. But this form should work in DotNetNuke . I understand there's some kind of action that is missing here so please help. Also can please help me add the Captcha field before the user click on 'Send button'? Also pls help me make All field required to be entered by user so to be sure the user enters all information. I think that is all. Pls ask if you need clarification thanks </div> <ul > <li id=

What's the best scheme for eliminating blog- or comment-spam [closed]

由 南笙酒味 提交于 2019-12-10 11:38:02
问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 4 years ago . How can I combine the followings to fight spam and at the same time minimize annoyance imposed to the user? In registration page, sending an email to verify the email address In registration page, use CAPTCHA In every post page, use CAPTCHA Feel free to add new items to the

How to capture multiple responses on one single POST request using Scrapy?

由 时光毁灭记忆、已成空白 提交于 2019-12-10 10:47:44
问题 I am trying to web scrape this website and download the pdf files available when you complete the whole lifecycle of this website. I am using Scrapy for this. I am having some trouble with capturing the captcha at the right time . This site is an ASPX webpage and uses ' Viewstates ' to keep track of each POST requests. Now, if you go through this site, you'll understand that whenever you fill any dropdown fields, it sends POST request with 'Viewstate' value to a certain URL path, which you

PHP Chinese Captcha

由 本秂侑毒 提交于 2019-12-10 10:06:14
问题 Is there a captcha available for PHP which displays Chinese characters but isn't JavaScript dependent? 回答1: BotDetect captcha supports Chinese characters since the version 3.0 http://captcha.biz/localizations/chinese-captcha.html A few days ago they released PHP version as well. http://captcha.biz/php-captcha.html It works with JavaScript disabled. 回答2: take a look at this http://www.phpkode.com/scripts/item/hippo-chinese-cert-code/ hope it helps 来源： https://stackoverflow.com/questions

PHP: Reloading the captcha image from javascript

由 孤者浪人 提交于 2019-12-09 20:29:50
问题 I have a user registration form in PHP .I put captcha image check in the page.I used it like this <img src="captcha.php" alt="Enter this text in the adjacent text box" id="imgCaptcha" /> and in my javascript i will validate this with the same number which is generated in the image (from captcha.php page) . That number was set in a session variable too. Now i want to reload the image to another image from my javascript , if the validattion fails .Is there any way to do so ? In my captcha.php

Checkbox as alternative to captcha?

由 末鹿安然 提交于 2019-12-09 18:27:31
问题 Does a checbox provide an alternative to using captcha on website? I am thinking i i need to use captcha for user signup. Instead if i put a checkbox for the terms like "By clicking here I agree...." can that solve the bots issues or is captcha required in addition to the checkbox? 回答1: One thing you can do with a checkbox is to make a honeypot. To do so, you would make a checkbox and hide it with CSS (because bots, as a rule, don't care about CSS). If the box is checked, then it's probably a

开发必学的验证码，教你从零写一个验证码

由 倖福魔咒の 提交于 2019-12-09 10:46:45
这周一写了一篇《2000字谏言，给那些想学Python的人，建议收藏后细看！》给大家讲了如何快速学习python。 其中就有说到我们为什么不要执迷于框架、模块的调用，而要自己先去造轮子。那今天就给大家造一个。 验证码是web开发中不可缺少的元素，而python又提供了非常多的验证码模块帮助大家快速生成各种验证码。 那你知道验证码生成的原理吗？所谓知其然，还要知其所以然。面试中，面试官不会因为你对框架很熟悉就夸赞你。 那今天小胖就带大家一层一层拨开验证码的衣服，看看其中的小奥秘 -<- 演示环境 操作系统：windows10 python版本：python 3.7 代码编辑器：pycharm 2018.2 使用第三方模块：pillow 验证码的必须元素 一张图片 文本 干扰元素 线条干扰 小圆点干扰 熟悉pillow库 我们既然需要使用pillow库制作验证码，那么首先我们先来熟悉一下我们需要用到的方法。 Image.new(): 这个方法可以生成一张图片，有三个参数。 mode:颜色空间模式，可以是 'RGBA','RGB','L' 等等模式 size:图片尺寸，接收一个两个整数的元祖 color:图片的填充颜色，可以是 red，green 等，也可以是rgb的三个整数的元祖。也就是背景颜色 from PIL import Image captcha = Image.new(

Changing image src with jQuery. (Doesn't work on Firefox)

由 僤鯓⒐⒋嵵緔 提交于 2019-12-09 01:42:43
问题 I'm writing an Ajax contact form. I have written my own captcha too. But I have a problem about refreshing the image. I have written this like that: Reloading the captcha: <code>$("#captchaSection").load("captcha_p.php");</code> And the captcha_p.php file: <code>< img src="captcha.php" name="imgCaptcha" /></code> And I have added this lines to the capcha.php: header("Cache-Control: no-cache, no-store, must-revalidate"); header('Content-type: image/png'); imagepng($im); imagedestroy($im); It

Get Captcha Image from Web Browser control without using SRC

由 无人久伴 提交于 2019-12-08 10:10:27
问题 I know this question might sound familiar and there are plenty of posts out there on google with the same title BUT trust me this is different. Editor : VS2008 (cannot upgrade it due to some technical difficulties) Question How to get Captcha Image from a Web Browser without using SRC ? Why wouldn't you use SRC? Here is the site from which i am trying to get my Captcha Image https://services.gst.gov.in/services/login (The capta image appears once you type anything in User Name) Now if you

Session saved in handler cannot be accessed in aspx file

由 随声附和 提交于 2019-12-08 09:24:04
问题 I am implementing captcha on the first page of my web application ie. on the login page. The captcha value is set in the generic handler which needs to be accessed in login.aspx page for verification. The captcha was working perfectly fine until I added a code to reset session ID every time user comes to the login page. I have this in my page load even of login.aspx: private void Page_Load(object sender, System.EventArgs e) { if(!IsPostBack) { Session.Abandon(); Response.Cookies.Add(new
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