Solved

I need write a script that will script a login process then grab the information from a page once logged in.

Posted on 2004-04-15
3
148 Views
Last Modified: 2010-04-06
Scenario:

I am making a screen scraping program that will gather information every day on a site.  The site does not have an rss feed so i cannot gather information that way, and their page is fairly static so this will allow me to screen scrape the information from the site.  I have proper permission to screen scrape and i have a valid user name and password, but my problem is that i do not know how to script a login.  

I need a script in vb.net or vbscript, that will basically do the following.

1. Open a web browser
2. Go to http://www.HowDoIDoThis.com/Login.asp // Arbitrary page
3. Some how type in a given user name and password
4. Submit the form
5. Once logged in, redirect to http://www.HowDoIDoThis.com/Information.asp // Arbitrary page
6. Grab all of the html from that page.

My problem is that trying to access the Information.asp page is protected, no users without passwords can go directly to it.  You have to login first, which sounds right because they want only their paying customers to view the content which i am so i just need to know how to do this bit!  

thanks ahead of time!

Flyin
0
Comment
Question by:flyin69
3 Comments
 
LVL 1

Accepted Solution

by:
Darix earned 250 total points
ID: 10840937
try to use or rewrite this class:

using System;
using System.Configuration;
using System.Net;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;

namespace Tamas
{
      public class AisPoster
      {
            private AisPoster(){}

            private string baseUrl;
            private string user;
            private string password;
            private string xml;
            private string regex1;

            public AisPoster(string user,string password,string xml)
            {
                  System.Collections.Specialized.NameValueCollection config
                        = System.Configuration.ConfigurationSettings.AppSettings;
                  this.baseUrl=config["baseUrl"];
                  this.regex1=config["regex1"];
                  if(!this.baseUrl.EndsWith("/"))
                        this.baseUrl=this.baseUrl+"/";
                  this.user=user;
                  this.password=password;
                  this.xml=xml;
            }
            /// <summary>
            /// Posts data to AIS site and returns response stream.
            /// </summary>
            /// <returns></returns>
            public System.IO.Stream Post()
            {
                  string loginUrl=baseUrl+"main/login.php";
                  PostWebRequest pReq=new PostWebRequest(loginUrl);
                  pReq.AddData("Action","Login");
                  pReq.AddData("Sub_User",user);
                  pReq.AddData("Sub_Pass",password);

                  string response1=pReq.GetResponseString(pReq.GetResponse());

                  pReq.Url=baseUrl+"import/import_priimti.php";
                  pReq.ContentType=ContentType.Multipart;
                  pReq.AddData("Dokumentas","DAA");
                  pReq.AddData("Tikslas","duomenu_baze");
                  pReq.AddData("Formatas","xml");
                  pReq.AddData("userfile",@"c:\upload.xml",xml);

                  string response=pReq.GetResponseString(pReq.GetResponse());
                  System.Text.RegularExpressions.Regex regex=new Regex(regex1
                        ,RegexOptions.Compiled);
                  Match m=regex.Match(response);
                  if (!m.Success)
                        throw new Exception("Response error");
                  else
                        response=m.Result("${value}");
                  

                  pReq.Url=baseUrl+"aapjp/pj_frm_daa.php";
                  pReq.AddData("Action","import");
                  
                  pReq.AddData("Filename",response);
                  pReq.AddData("Tikslas","duomenu_baze");
                  pReq.AddData("Formatas","xml");
                  pReq.ContentType=ContentType.NonMultipart;
                  string response2=pReq.GetResponseString(pReq.GetResponse());


                  pReq.Url=baseUrl+"import/import_daa.php";
                  pReq.AddData("DokNr","");
                  pReq.AddData("Action","");
                  pReq.AddData("Filename",response);
                  pReq.AddData("Tikslas","duomenu_baze");
                  pReq.AddData("Formatas","xml");
                  pReq.ContentType=ContentType.NonMultipart;
                  return pReq.GetResponse().GetResponseStream();
            
            }
      }
}
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: Matthew
I am a very big proponent of technology compliance standards and strive to meet such criteria in all of my work. That includes my site, which is 100% XHTML 1.0 compliant as determined by the World Wide Web Consortium. https://www.matthewstevenkel…
Browsers only know CSS so your awesome SASS code needs to be translated into normal CSS. Here I'll try to explain what you should aim for in order to take full advantage of SASS.
Viewers will learn one way to get user input in Java. Introduce the Scanner object: Declare the variable that stores the user input: An example prompting the user for input: Methods you need to invoke in order to properly get  user input:
The viewer will learn how to count occurrences of each item in an array.

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now