How to use cgi form input as variable in call to system command in Python script?

Question

Say I have a web page like this on an Ubuntu 12.04 web server running apache:

<html>
<head>
  <meta content="text/html; charset=ISO-8859-1"
  http-equiv="content-type">
  <title>Name Input</title>
</head>
  <body>
    <form action="./test.py" method="post"> 
      <p> Name: <input type="text" name="name" id="name" value=""/></p> 
      <input type="submit" value="Submit" />
    </form>
  </body>
</html>

I want to use the value of name as input to a shell script which is called by a Python CGI script like this.

test.py:

#!/usr/bin/env python
import commands, cgi, cgitb
form = cgi.FieldStorage() 
name = form.getvalue('name') 
result = commands.getoutput("/usr/lib/cgi-bin/test.sh name")
contents = pageTemplate.format(**locals())
print "Content-type: text/html\n\n"
print contents

In the example code above, how should name be passed to test.sh?

For completeness, say that pageTemplate looks like this:

pageTemplate = '''<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <meta content="text/html; charset=ISO-8859-1"
  http-equiv="content-type">
  <title>Name Output</title>
</head>
  <body>
    {result}
  </body>
</html>
'''

jdi · Accepted Answer · 2012-06-27 22:25:12Z

1

Just pass it into the command:

result = commands.getoutput("/usr/lib/cgi-bin/test.sh %s" % name)

answered Jun 27, 2012 at 22:25

jdi

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