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My internet connection is provided by the university. It is protected to a username/password combination. This means when I start up my computer, I have to start a web browser and open an arbitrary website. I am then redirected to a page, which (among other things) contains two forms. In these I have to input username and password. I managed to do this with firefox (which can save the password) and also with links (which loads faster and from the command line).

Is there any way to automate the login process using a bash script? This would allow doing the login when booting, so that it is already there when I start the X server.

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You might be able to call the login script from the form's ACTION attribute with curl directly. –  terdon Sep 4 '13 at 12:56
    
Many Universities also offer a network that uses "Enterprise Authentication" (i.e. using a username/password for the network connection itself, instead of waiting until you try to access a page to ask for credentials). The ability to store such network credentials is built in the OS. It's also much more secure because it means that it's harder for others to snoop on your connection. If your University supports that, you should switch to it. –  Moshe Katz Sep 9 '13 at 19:58
    
It would also help us if you can give an (anonymized) example of the URL you are redirected to when you log in. (Anonymized here means that you should remove your MAC Address and/or IP address from the URL if they are there, but leave everything else, including the name of the University.) –  Moshe Katz Sep 9 '13 at 20:03
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3 Answers

You can try it out with curl, you can Simply use curl like this to login to web page :

curl --user name:password http://somesite.com -v 

You can pass Data to website like this from Stackoverflow answer

    curl -b cookies.txt -c cookies.txt --data "Username=xx&Password=xx&Login=Login" [urlthatyour form submits]

you need cookies if you want to make another curl request after logging in. the session id in cookies will help next curl request authorized.

If you don't want cookies you can use

curl --data "Username=xx&Password=xx&Login=Login" [url that your form submits]

You can additionally refer here for Special Commands

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I am not able to try this right now, but I expect that this will only work when there is a dialog box asking for the password when opening the site. In my case there are just two forms. One for the name and one for the password. I will change the question to make this clearer. –  Tim Sep 4 '13 at 12:33
    
@Tim added how to pass data,normally You would need to find out what page the page requests to (or the action value of the page). –  BlueBerry - vignesh4303 Sep 4 '13 at 14:03
    
This sounded as if it could work, but sadly it didn't. When looking at the output of curl suggests that the Username field is correctly filled with the correct value, but the Password field is not (this may be correct as a security measure). I am not sure if the submit button was actually triggered. Does it matter what value is passed to Login? –  Tim Sep 6 '13 at 14:07
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A simple way to script this is with Selenium.

You can use their Firefox "Test Recorder" plugin to record a test of yourself logging in to the network, and then play back the test.

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up vote 1 down vote accepted

I finally found a way to automatically log in using elinks. It works and it is even easy to configure!

Two options need to be set. This can done by adding the following lines in elinks/elinks.conf or by changing the values at the respective positions in the options dialog within elinks:

    # Save username and password for later use
set document.browse.forms.show_formhist = 1
    # Do not ask for confirmation before a form is submitted
set document.browse.forms.confirm_submit = 0

Steps for a scriptable autologin are then:

  • Set those two options
  • Open the login page in elinks, fill the forms and submit them.
  • Choose to remember name and password for later use.
  • Close elinks
  • Run elinks -auto-submit http://somesite.com

The latter command should perform the automatic login without further user interaction.

I actually use timeout 1m elinks -auto-submit http://somesite.com &, so that I do not have an idling elinks process running in the background all the time.

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