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Viewing changes to src/apps/server/__init__.py

  • Committer: mattgiuca
  • Date: 2007-12-14 04:53:50 UTC
  • Revision ID: svn-v3-trunk0:2b9c9e99-6f39-0410-b283-7f802c844ae2:trunk:61
dispatch/request: added read method.
server: Execute CGI with popen. But it doesn't work :(

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src/apps/server/__init__.py
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import functools
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import mimetypes
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import os
 
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import subprocess
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def handle(req):
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    """Handler for the Server application which serves pages."""
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    if type is None:
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        type = 'text/plain'
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    req.content_type = type
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    req.write_html_head_foot = False
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    # Get the username of the student whose work we are browsing, and the path
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    if type in executable_types:
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        return executable_types[type](path, req)
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    else:
 
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        req.content_type = type
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        req.sendfile(path)
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def execute_cgi(filename, studentprog, req):
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    the HTTP body on stdin. It shall receive the CGI environment variables to
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    its environment.
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    """
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    # TEMP
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    req.write("execute_cgi(%s, %s, req)\n" % (filename, studentprog))
 
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    # Get the student program's directory and execute it from that context.
 
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    slashloc = studentprog.rfind(os.sep)
 
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    if slashloc >= 0:
 
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        progdir = studentprog[0:slashloc]
 
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    else:
 
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        progdir = "/"
 
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    # TODO: Don't create a file if the body length is known to be 0
 
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    # Write the HTTP body to a temporary file so it can be passed as a *real*
 
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    # file to popen.
 
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    f = os.tmpfile()
 
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    body = req.read()
 
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    if body is not None:
 
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        f.write(body)
 
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        f.flush()
 
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        f.seek(0)       # Rewind, for reading
 
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    pid = subprocess.Popen([studentprog], executable=filename,
 
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        stdin=f, stdout=subprocess.PIPE, cwd=progdir)
 
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    # Read from the process's stdout into req
 
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    # FIXME: Efficiency
 
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    response = pid.stdout.read()
 
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    req.write(response)
 
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# Mapping of mime types to executables
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executable_types = {
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    'text/x-python'