Introduction to Programming II (4/3 cr.)

Second Summer 2009

Password protected folders. Database design (I).

I include only the password protected related notes. The rest will be posted a bit later. Here we go:

Create
```
   mkdir ~/apache/htdocs/protected 
```
Go to
```
   ~/apache
```
and create a password file:
```
   pico passwd 
```
Make the contents of this file be just one line:
```
   dgerman:UIaTPpE.ZpwHw    
```
Then exit, saving the contents.

Open with

pico ~/apache/conf/httpd.conf

and go to line 125 (^W, ^T, 125 ) then add these :

<Directory /u/[username]/apache/htdocs/protected>
  AuthName Protected
  AuthType Basic
  AuthUserFile /u/[username]/apache/passwd
  <Limit GET POST>
    require user [instructor]
    require user lbird
  </Limit>
</Directory>

but of course make the changes you need to make:

<Directory /u/dgerman/apache/htdocs/protected>
  AuthName Protected
  AuthType Basic
  AuthUserFile /u/dgerman/apache/passwd   
  <Limit GET POST>
    require user dgerman     
    require user lbird
    require user ktaber
  </Limit>
</Directory>

Create passwords for the non-instructor users:

-bash-3.2$ pwd
/u/dgerman/apache

-bash-3.2$ ls -ld passwd
-rw-r--r-- 1 dgerman faculty 22 Feb  5 11:37 passwd

-bash-3.2$ cat passwd
dgerman:UIaTPpE.ZpwHw

-bash-3.2$ bin/htpasswd 
Usage:
        htpasswd [-cmdpsD] passwordfile username
        htpasswd -b[cmdpsD] passwordfile username password

        htpasswd -n[mdps] username
        htpasswd -nb[mdps] username password
 -c  Create a new file.
 -n  Don't update file; display results on stdout.
 -m  Force MD5 encryption of the password.
 -d  Force CRYPT encryption of the password (default).
 -p  Do not encrypt the password (plaintext).
 -s  Force SHA encryption of the password.
 -b  Use the password from the command line rather than prompting for it.
 -D  Delete the specified user.
On Windows, NetWare and TPF systems the '-m' flag is used by default.
On all other systems, the '-p' flag will probably not work.

-bash-3.2$ bin/htpasswd passwd lbird
New password: 
Re-type new password: 
Adding password for user lbird

-bash-3.2$ cat passwd
dgerman:UIaTPpE.ZpwHw
lbird:JIYveYLlORlD.

-bash-3.2$ bin/htpasswd -b passwd ktaber stepup 
Adding password for user ktaber

-bash-3.2$ cat passwd
dgerman:UIaTPpE.ZpwHw
lbird:JIYveYLlORlD.
ktaber:TMdu47VlmfNUY

-bash-3.2$

Restart your server:
```
  ~/apache/bin/apachectl restart
```
Then connect to your folder to check password protection:
```
  http://silo.cs.indiana.edu:46xxx/protected
```

Post something. I decided to post:

  ~/apache/cgi-bin/0202/one

To get the program running you access the following URL:

  http://silo.cs.indiana.edu:46016/cgi-bin/0202/one

To see the source code you need a different link.

Create a symbolic link to the code (in protected):

-bash-3.2$ pwd
/u/dgerman/apache/htdocs/protected

-bash-3.2$ ls -l
total 0

-bash-3.2$ ln -s ../../cgi-bin/0202/one one.txt

-bash-3.2$ ls -l
total 4
lrwxrwxrwx 1 dgerman faculty 22 Feb  5 12:06 one.txt -> ../../cgi-bin/0202/one

-bash-3.2$

The link to the source code now is

  http://silo.cs.indiana.edu:46016/protected/one.txt