import sys
import cgi
+import vobject
import icalparse
+import re
#import cgitb; cgitb.enable()
-form = cgi.FieldStorage()
+def exitQuiet(exitstate=0):
+ print('Content-Type: text/html\n')
+ sys.exit(exitstate)
if __name__ == '__main__':
+ form = cgi.FieldStorage()
if "uid" not in form or "key" not in form:
print('Content-Type: text/html\n')
sys.exit(0)
try:
+ # UID should be numeric, if it's not we have someone playing games
uid = int(form['uid'].value)
- key = int(form['key'].value)
except:
- print('Content-Type: text/html\n')
- sys.exit(0)
+ exitQuiet()
- url = 'http://www.facebook.com/ical/u.php?uid=%s&key=%s'%(uid,key)
+ # The user's key will be a 16 character string
+ key = form['key'].value
+ re.search('[&?]+', key) and exitQuiet()
+ len(key) == 16 or exitQuiet()
+
+ # Historically facebook has been notoriously bad at setting timzeones
+ # in their stuff so this should be a user setting. If it is set in
+ # their calendar it'll be used otherwise if the user feeds crap or
+ # nothing just assume they want Australia/Perth
+ tz = ""
+ if "tz" in form:
+ from pytz import timezone
+ try:
+ timezone(form['tz'].value)
+ tz = form['tz'].value
+ except: pass
+
+ ruleConfig = {}
+ ruleConfig["defaultTZ"] = tz or "Australia/Perth"
+
+ # Okay, we're happy that the input is sane, lets serve up some data
+ url = 'http://www.facebook.com/ical/u.php?uid=%d&key=%s'%(uid,key)
(content, encoding) = icalparse.getHTTPContent(url)
cal = vobject.readOne(unicode(content, encoding))
- cal = icalparse.applyRules(cal, icalparse.generateRules(), False)
+ cal = icalparse.applyRules(cal, icalparse.generateRules(ruleConfig), False)
print('Content-Type: text/calendar; charset=%s\n'%encoding)
icalparse.writeOutput(cal)