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admin_webinterface.py
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admin_webinterface.py
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#!/usr/bin/python
from cgi import parse_qs, escape
import re
import sys
import os
import datetime, time
import json
if os.path.dirname(__file__) != '':
sys.path.append(os.path.dirname(__file__))
os.chdir(os.path.dirname(__file__))
from config import *
from ldaputils import *
html_header = \
"""<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<style type="text/css">
.pageinput{ width:3em }
</style>
</head>
<body>
"""
html_footer = \
"""
</body>
</html>
"""
# TODO: Remove user_interface once physdash is the default method for retrieving printing quota
# via the getquota API
def user_interface(env, start_response):
setup_testing_defaults(env)
try:
request_body_size = int( env.get( 'CONTENT_LENGTH', 0 ) )
except ValueError:
request_body_size = 0
request_body = env['QUERY_STRING']
d = parse_qs( request_body )
username = escape( d.get( 'username', [''] )[0] )
pagecount, pagequota = ('', '')
current_time = datetime.datetime.now()
first_of_next_month = datetime.datetime(current_time.year +current_time.month//12, (current_time.month+1) if current_time.month < 12 else 1, 1, 0, 0, 0, 0)
lastupdate, = db_cursor.execute( 'SELECT value FROM config WHERE key="lastupdate";' ).fetchone()
if len( username ) > 0:
try:
pagecount, pagequota, lastjob = db_cursor.execute( 'SELECT pagecount, pagequota, lastjob FROM users WHERE username = ?;', [username] ).fetchone()
no_such_user = False
except:
no_such_user = True
else:
no_such_user = True
status = '200 OK'
headers = [ ('Content-type', 'text/html') ]
start_response( status, headers )
html = []
html.append( html_header )
html.append( """<form method="get">""" )
html.append( """<p>Please input your username to query your leftover page quota.</p>""" )
html.append( """<input type="text" name="username" value="%s"/>""" % (username) )
if (pagecount != '' and pagequota != ''):
if pagecount > pagequota:
html.append( """<p>User <b>%s</b> is <b>%s</b> pages over quota. Printing is therefore <b>disabled</b>.<br />""" % (username, pagecount-pagequota) )
else:
html.append( """<p>User <b>%s</b> has <b>%s</b> pages left. """ % (username, pagequota-pagecount) )
html.append( "The last print job was executed on %s.<br />" % datetime.datetime.fromtimestamp(int(lastjob)).strftime("%Y-%m-%d") )
html.append( "Your quota will be automatically increased by %d pages on %s. " % ( monthly_pagenumber_decrease if int(pagecount)-monthly_pagenumber_decrease>0 else pagecount, first_of_next_month.strftime('%Y-%m-%d')))
html.append( "It was last increased on %s.</p>" % datetime.datetime.fromtimestamp(lastupdate).strftime("%Y-%m-%d") )
elif (no_such_user and len(username) > 0):
html.append( """<p>User <b>%s</b> is not in our system.</p>""" % (username) )
html.append( """</form>""" )
html.append( html_footer )
return html
def getquota(env, start_response):
setup_testing_defaults(env)
try:
request_body_size = int( env.get( 'CONTENT_LENGTH', 0 ) )
except ValueError:
request_body_size = 0
request_body = env['QUERY_STRING']
d = parse_qs( request_body )
username = escape( d.get( 'username', [''] )[0] )
pagecount, pagequota = ('', '')
current_time = datetime.datetime.now()
first_of_next_month = datetime.datetime(current_time.year +current_time.month//12, (current_time.month+1) if current_time.month < 12 else 1, 1, 0, 0, 0, 0)
lastupdate, = db_cursor.execute( 'SELECT value FROM config WHERE key="lastupdate";' ).fetchone()
if len( username ) > 0:
try:
pagecount, pagequota, lastjob = db_cursor.execute( 'SELECT pagecount, pagequota, lastjob FROM users WHERE username = ?;', [username] ).fetchone()
no_such_user = False
except:
no_such_user = True
else:
no_such_user = True
status = '200 OK'
headers = [ ('Content-type', 'application/json'), ('Access-Control-Allow-Origin', '*') ]
start_response( status, headers )
res = {}
if (pagecount != '' and pagequota != ''):
res["pagequota"] = pagequota
res["pagecount"] = pagecount
res["lastjob"] = datetime.datetime.fromtimestamp(int(lastjob)).strftime("%Y-%m-%d")
res["increasecount"] = monthly_pagenumber_decrease if int(pagecount) - monthly_pagenumber_decrease > 0 else pagecount
res["nextincrease"] = first_of_next_month.strftime('%Y-%m-%d')
elif (no_such_user and len(username) > 0):
res["error"] = "USER_NOT_FOUND"
else:
res["error"] = "OTHER"
return json.dumps(res) + '\n'
def admin_interface(env, start_response):
setup_testing_defaults(env)
try:
request_body_size = int( env.get( 'CONTENT_LENGTH', 0 ) )
except ValueError:
request_body_size = 0
request_body = env['wsgi.input'].read( request_body_size )
d = parse_qs( request_body )
username = escape( d.get( 'username', [''] )[0] )
try:
pagecount = int( d.get( 'pagecount', [''] )[0] )
except ValueError:
pagecount = 0
try:
pagequota = int( d.get( 'pagequota', [''] )[0] )
except ValueError:
pagequota = 0
if len( username ) > 0:
db_cursor.execute( 'UPDATE users set pagequota = ?, pagecount = ? WHERE username = ?;', ( pagequota, pagecount, username ) );
db_conn.commit()
if pagequota > pagecount:
enablePrinting(username)
else:
disablePrinting(username)
status = '200 OK'
headers = [ ('Content-type', 'text/html') ]
start_response( status, headers )
html = []
html.append( html_header )
html.append( """<table>""" )
html.append( """<tr><th>User name</th><th>Full name</th><th>Quota used/available</th><th>Last print job</th><th>noprinting member</th></tr>""" )
# Retrieve list of users from LDAP for full names
uid2attribs = get_ldap_userlist()
for entry in db_cursor.execute('SELECT username, pagecount, pagequota, lastjob FROM users ORDER BY username ASC'):
# Make table row red if printing is disabled
if entry[1] > entry[2]:
html.append( """<tr style='background-color: red'>""" )
else:
html.append( """<tr>""" )
# Try to constrcut user's full name from LDAP userlist
fullname = ""
if entry[0] in uid2attribs and "sn" in uid2attribs[entry[0]] and "givenName" in uid2attribs[entry[0]]:
fullname = "%s, %s" % (uid2attribs[entry[0]]["sn"], uid2attribs[entry[0]]["givenName"])
# Username
html.append( """<td>""" )
html.append( str( entry[0] ) )
html.append( """</td>""" )
# Full name
html.append( """<td>""" )
html.append( fullname )
html.append( """</td>""" )
# Quota used / available
html.append( """<td>""" )
html.append( """<form method="post">""" )
html.append( """<input type="text" name="pagecount" value="%s" class="pageinput"> / <input type="text" name="pagequota" value="%s" class="pageinput"> """ % ( str( entry[1] ), str( entry[2] ) ) )
html.append( """<input type="hidden" name="username" value="%s">""" % ( str( entry[0] ) ) )
html.append( """<input type="submit" value="save">""" )
html.append( """</form>""" )
html.append( """</td>""" )
# Last print job
if time.time() - int(entry[3]) < 60*60*12: # printed in the last 12 hours
html.append("""<td style="background-color: green">""")
else:
html.append("""<td>""")
html.append(datetime.datetime.fromtimestamp(int(entry[3])).strftime("%Y-%m-%d %H:%M:%S"))
html.append("""</td>""")
# noprinting group membership
if entry[0] in uid2attribs:
if uid2attribs[entry[0]]["noprinting_member"]:
html.append("""<td align="center" style="background-color: red">yes""")
else:
html.append("""<td align="center" style="background-color: white">no""")
html.append( """</td>""" )
html.append( """</tr>""" )
html.append( """</table>""" )
html.append( html_footer )
return html
def not_found(env, start_response):
start_response('404 NOT FOUND', [('Content-Type', 'text/plain')])
return ['Not Found']
def application(env, start_response):
urls = [
(r'^$', user_interface),
(r'^admin/?$', admin_interface),
(r'^getquota/?$', getquota)
]
path = env.get('PATH_INFO', '').lstrip('/')
for regex, callback in urls:
match = re.search(regex, path)
if match is not None:
env['myapp.url_args'] = match.groups()
return callback(env, start_response)
return not_found(env, start_response)
if __name__ == '__main__':
from wsgiref.simple_server import make_server
from wsgiref.util import setup_testing_defaults
httpd = make_server( '', webinterface_port, application )
print "Serving on port 8000..."
httpd.serve_forever()
else:
def setup_testing_defaults(env):
pass