cgi-bin/download.cgi

   1 #!/usr/bin/python
   2
   3 current_version = "2010.04"
   4 mirror_url = "http://download.grml.org/"
   5
   6 #### END OF CONFIGURATION ####
   7
   8 import cgi, re
   9
  10 safe_regex = re.compile('^[a-zA-Z0-9_]+$')
  11
  12 def validate_input(value):
  13         x = safe_regex.match(value)
  14         if not x:
  15                 raise Exception("unsafe input found" + str(x))
  16         return value
  17
  18 def get_download_url(flavour, arch, filetype):
  19         folder = ''
  20         product = 'grml'
  21         if arch == "amd64": product = 'grml64'
  22         if flavour == 'full':
  23                 pass
  24         else:
  25                 product += '-' + flavour
  26
  27         filetypes = {
  28                 'iso': '',
  29                 'bt': '.torrent',
  30                 'md5': '.md5',
  31                 'sha1': '.sha1',
  32                 'signature': '.sha1.asc'
  33         }
  34         fileext = filetypes[filetype]
  35         if "rc" in current_version:
  36                 folder = "devel/"
  37
  38         iso = product + '_' + current_version + '.iso' + fileext
  39         return mirror_url + folder +  iso
  40
  41 def run():
  42         import cgitb
  43         cgitb.enable()
  44
  45         try:
  46                 form = cgi.FieldStorage()
  47                 try:
  48                         global current_version
  49                         current_version = form['version'].value
  50                 except Exception:
  51                         pass
  52                 flavour = validate_input(form['flavour'].value)
  53                 arch = validate_input(form['arch'].value)
  54                 filetype = "iso"
  55                 if "filetype" in form: filetype = validate_input(form['filetype'].value)
  56
  57                 print "Status: 302"
  58                 print "Location: " + get_download_url(flavour, arch, filetype)
  59                 print
  60         except Exception, e:
  61                 print "Content-Type: text/html"     # HTML is following
  62                 print                               # blank line, end of headers
  63                 print "<H1>Error</H1>"
  64                 print "Please select flavour and architecture."
  65                 print e
  66
  67 if __name__ == "__main__":
  68         run()
  69