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  • Committer: Matt Giuca
  • Date: 2009-05-26 04:15:23 UTC
  • mto: This revision was merged to the branch mainline in revision 1322.
  • Revision ID: matt.giuca@gmail.com-20090526041523-hsg5q2enlhvjb5y2
doc/man/architecture.rst: User management server.

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ivle/interpret.py
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# Runs a student script in a safe execution environment.
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from ivle import studpath
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from ivle.util import IVLEError, IVLEJailError
 
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from ivle.util import IVLEError, IVLEJailError, split_path
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import ivle.conf
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import functools
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    # usage: tramp uid jail_dir working_dir script_path
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    pid = subprocess.Popen(
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        [trampoline, str(uid), jail_dir, working_dir, interpreter,
 
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        [trampoline, str(uid), ivle.conf.jail_base, ivle.conf.jail_src_base,
 
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         ivle.conf.jail_system, jail_dir, working_dir, interpreter,
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        script_path],
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        stdin=f, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
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        cwd=tramp_dir)
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    if script_path and script_path.startswith('/home'):
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        normscript = os.path.normpath(script_path)
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        uri_into_jail = studpath.url_to_jailpaths(os.path.normpath(req.path))[2]
 
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        uri_into_jail = studpath.to_home_path(os.path.normpath(req.path))
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        # PATH_INFO is wrong because the script doesn't physically exist.
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        env['PATH_INFO'] = uri_into_jail[len(normscript):]
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    env['SERVER_SOFTWARE'] = "IVLE/" + str(ivle.conf.ivle_version)
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    # Additional environment variables
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    username = studpath.url_to_jailpaths(req.path)[0]
 
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    username = split_path(req.path)[0]
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    env['HOME'] = os.path.join('/home', username)
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class ExecutionError(Exception):
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    # Fire up trampoline. Vroom, vroom.
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    proc = subprocess.Popen(
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        [tramp, str(user.unixid), jail_dir, working_dir, binary] + args,
 
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        [tramp, str(user.unixid), ivle.conf.jail_base,
 
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         ivle.conf.jail_src_base, ivle.conf.jail_system, jail_dir,
 
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         working_dir, binary] + args,
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        stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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        stderr=subprocess.PIPE, cwd=tramp_dir, close_fds=True)
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    exitcode = proc.wait()
 
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    (stdout, stderr) = proc.communicate()
 
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    exitcode = proc.returncode
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    if exitcode != 0:
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        raise ExecutionError('subprocess ended with code %d, stderr %s' %
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                             (exitcode, proc.stderr.read()))
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    return (proc.stdout.read(), proc.stderr.read())
 
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    return (stdout, stderr)