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Posted on 2003-03-18
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Last Modified: 2008-03-06
Hi,
  we need to make an ammendment to our mail system
but im stuck with the login.

At the moment all users go to the same internal site.
enter the email addres and click next. this looks the
user up in the database and stores the user id as a hidden
value and change the form tag to represent the correct server
for this user. They then enter the password and log in.

What they want is everyone goes to the same page and
enters the email address and password on one page
i.e hotmail and the login straight in.

The problem is our mail systems are on different urls
ie server1.mail.com server2.mail.com ...

Is there any way of posting this data safley.???
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Question by:tsPHP
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6 Comments
 
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Expert Comment

by:Thunder27
ID: 8161028
Which version of PHP are you using?
0
 

Author Comment

by:tsPHP
ID: 8165207
4.1.0
& Register globals is ON

Would this make a major difference.
0
 

Expert Comment

by:tirdun
ID: 8167294
You could have a second page take the username and password, determine the correct email server and then forward the user via HTTP headers. ie:

<?
$uname = $_POST["username"];
$pword = $_POST["password"];
$emailserver = ##-= Code to get email server =- or "fail";
if ($emailserver != "fail"):
    header("Location: $emailserver /r/n");
else:
    header("Locaion: $loginpage /r/n");
endif;
?>

You'll need to brush up on HTTP headers (check the PHP documentation for some standard sets). The page -should- wind up being transparent to the user, as it will load, pass to a new page or fail back to the login page. Note that there may be security issues on non-secure pages.
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Author Comment

by:tsPHP
ID: 8167572
hi,
  I can now direct them towards the right mail server but
this script will not pass the username and password
to the new url which is one a different server. If i dont
pass the username and password it will not log the user in.

I mentioned security issues because i have a way of doing
this but its not safe.
It was similar to as above but used javascript to auto submit a for with hidden values for username and password.

I hope what ive said makes sense.
Im going to look at HTTP headers in more detail to see if i can pass values between pages using this.

Thanks
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LVL 1

Expert Comment

by:Thunder27
ID: 8168220
You need a database server that both web servers can access.  This way, you can create an encrypted login authorization record on the db server when the user logs in.  Then you can pass one of the fields (i.e. username) along with the HTTP header:

i.e.  header("Location: $emailserver?username=$uname");

When the receiving server gets the page, it could make a connection to the same MySQL server and select the authorization based on the username.

You would have to be careful to remove the auth record once it has been used.

Unfortunately, this is just a work-around, but it's the best i can think of.
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Accepted Solution

by:
Thunder27 earned 150 total points
ID: 8168268
Here's an example...  it's freeware, but is for PHP4 with PostgreSQL.  It's basically a session management program for doing exactly what you need to do... hope this helps.

http://www.csh.rit.edu/~jon/projects/php/pgsql_session_handler/
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