Whitespace corrections

[frenchie/icalparse.git] / icalparse.py

diff --git a/icalparse.py b/icalparse.py
index 5769c3e..a573b48 100755 (executable)
--- a/icalparse.py
+++ b/icalparse.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python
 #
-# Copyright (c) 2011 James French <[email protected]>
+# Copyright (c) 2013 James French <[email protected]>
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -20,9 +20,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
-import sys
+import sys, os
 import urlparse
-import os
 import vobject
 from cgi import parse_header
 
@@ -137,6 +136,7 @@ def applyRules(cal, rules=[], verbose=False):
 
        return cal
 
+
 def writeOutput(cal, outfile=''):
        '''Takes a list of lines and outputs to the specified file'''
 
@@ -157,17 +157,13 @@ def writeOutput(cal, outfile=''):
 
        if not out == sys.stdout:
                out.close()
-               
-def exitQuiet(exitstate=0):
-       '''When called as a CGI script, exit quietly if theres any errors'''
-       print('Content-Type: text/html\n')
-       sys.exit(exitstate)
-       
+
+
 def runLocal():
        '''Main run function if this script is called locally'''
-       
+
        from optparse import OptionParser
-       
+
        parser = OptionParser('usage: %prog [options] url')
        parser.add_option('-s', '--stdin', action='store_true', dest='stdin',
                default=False, help='Take a calendar from standard input')
@@ -178,12 +174,12 @@ def runLocal():
        parser.add_option('-m','--encoding', dest='encoding', default='',
                help='Specify a different character encoding'
                '(ignored if the remote server also specifies one)')
-       parser.add_option('-t','--timezone', dest='timezone', default=ruleConfig["defaultTZ"],
+       parser.add_option('-t','--timezone', dest='timezone', default='',
                help='Specify a timezone to use if the remote calendar doesn\'t set it properly')
-       
+
        (options, args) = parser.parse_args()
-       ruleConfig["defaultTZ"] = options.timezone
-       
+       ruleConfig["defaultTZ"] = options.timezone or ruleConfig["defaultTZ"]
+
        # If the user passed us a 'stdin' argument, we'll go with that,
        # otherwise we'll try for a url opener
        if not args and not options.stdin:
@@ -202,11 +198,62 @@ def runLocal():
 
        writeOutput(cal, options.outfile)
 
-       
+
+def exitQuiet(exitstate=0):
+       '''When called as a CGI script, exit quietly if theres any errors'''
+       print('Content-Type: text/html\n')
+       sys.exit(exitstate)
+
+
 def runCGI():
-       '''Main run function if this script is called as a CGI script'''
-       pass
-       
+       '''Main run function if this script is called as a CGI script
+       to process facebook ical files'''
+       import cgi
+       import re
+       import cgitb; cgitb.enable()
+
+       ruleConfig["facebook"] = True
+
+       form = cgi.FieldStorage()
+       if "uid" not in form or "key" not in form:
+               print('Content-Type: text/calendar\n')
+               sys.exit(0)
+       try:
+               # UID should be numeric, if it's not we have someone playing games
+               uid = int(form['uid'].value)
+       except:
+               exitQuiet()
+
+       # 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["defaultTZ"] = tz or ruleConfig["defaultTZ"]
+
+       # 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) = getHTTPContent(url)
+
+       cal = vobject.readOne(unicode(content, encoding))
+       cal = applyRules(cal, generateRules(ruleConfig), False)
+
+       print('Content-Type: text/calendar; charset=%s\n'%encoding)
+       writeOutput(cal)
+
+
 if __name__ == '__main__':
        # Ensure the rules process using the desired timezone
        ruleConfig = {}