nagixsc_http2nagios.py

   1 #!/usr/bin/python
   2
   3 import ConfigParser
   4 import base64
   5 import cgi
   6 import optparse
   7 import os
   8 import re
   9 import sys
  10
  11 try:
  12         from hashlib import md5
  13 except ImportError:
  14         from md5 import md5
  15
  16 ##############################################################################
  17
  18 from nagixsc import *
  19
  20 ##############################################################################
  21
  22 parser = optparse.OptionParser()
  23
  24 parser.add_option('-c', '', dest='cfgfile', help='Config file')
  25 parser.add_option('-d', '--daemon', action='store_true', dest='daemon', help='Daemonize, go to background')
  26 parser.add_option('', '--nossl', action='store_true', dest='nossl', help='Disable SSL (overwrites config file)')
  27
  28 parser.set_defaults(cfgfile='http2nagios.cfg')
  29
  30 (options, args) = parser.parse_args()
  31
  32 cfgread = ConfigParser.SafeConfigParser()
  33 cfgread.optionxform = str # We need case-sensitive options
  34 cfg_list = cfgread.read(options.cfgfile)
  35
  36 if cfg_list == []:
  37         print 'Config file "%s" could not be read!' % options.cfgfile
  38         sys.exit(1)
  39
  40 config = {}
  41 try:
  42         config['ip']   = cfgread.get('server', 'ip')
  43         config['port'] = cfgread.getint('server', 'port')
  44         config['ssl']  = cfgread.getboolean('server', 'ssl')
  45         config['cert'] = cfgread.get('server', 'sslcert')
  46
  47         config['max_xml_file_size']  = cfgread.get('server', 'max_xml_file_size')
  48         config['checkresultdir'] = cfgread.get('mode_checkresult', 'dir')
  49
  50 except ConfigParser.NoOptionError, e:
  51         print 'Config file error: %s ' % e
  52         sys.exit(1)
  53
  54 if os.access(config['checkresultdir'],os.W_OK) == False:
  55         print 'Checkresult directory "%s" is not writable.' % config['checkresultdir']
  56         sys.exit(1)
  57
  58 users = {}
  59 for u in cfgread.options('users'):
  60         users[u] = cfgread.get('users', u)
  61
  62 ##############################################################################
  63
  64 class HTTP2NagiosHandler(MyHTTPRequestHandler):
  65
  66         def http_error(self, code, output):
  67                 self.send_response(code)
  68                 self.send_header('Content-Type', 'text/plain')
  69                 self.end_headers()
  70                 self.wfile.write(output)
  71                 return
  72
  73
  74         def do_GET(self):
  75                 self.send_response(200)
  76                 self.send_header('Content-Type', 'text/html')
  77                 self.end_headers()
  78                 self.wfile.write('''                    <html><body>
  79                                 <form action="." method="post" enctype="multipart/form-data">
  80                                 filename: <input type="file" name="xmlfile" /><br />
  81                                 <input type="submit" />
  82                                 </form>
  83                         </body></html>
  84                         ''')
  85                 return
  86
  87
  88         def do_POST(self):
  89                 # Check Basic Auth
  90                 try:
  91                         authdata = base64.b64decode(self.headers['Authorization'].split(' ')[1]).split(':')
  92                         if not users[authdata[0]] == md5(authdata[1]).hexdigest():
  93                                 raise Exception
  94                 except:
  95                         self.send_response(401)
  96                         self.send_header('WWW-Authenticate', 'Basic realm="Nag(ix)SC HTTP Push"')
  97                         self.send_header('Content-Type', 'text/plain')
  98                         self.end_headers()
  99                         self.wfile.write('Sorry! No action without login!')
 100                         return
 101
 102                 (ctype,pdict) = cgi.parse_header(self.headers.getheader('content-type'))
 103                 if ctype == 'multipart/form-data':
 104                         query = cgi.parse_multipart(self.rfile, pdict)
 105                 xmltext = query.get('xmlfile')[0]
 106
 107                 if len(xmltext) > 0:
 108                         doc = read_xml_from_string(xmltext)
 109                         checks = xml_to_dict(doc)
 110
 111                         (count_services, count_failed, list_failed) = dict2out_checkresult(checks, xml_get_timestamp(doc), config['checkresultdir'], 0)
 112
 113                         if count_failed < count_services:
 114                                 self.send_response(200)
 115                                 self.send_header('Content-Type', 'text/plain')
 116                                 self.end_headers()
 117                                 self.wfile.write('Wrote %s check results, %s failed' % (count_services, count_failed))
 118                                 return
 119                         else:
 120                                 self.http_error(501, 'Could not write all %s check results' % count_services)
 121                                 return
 122
 123                 else:
 124                         self.http_error(502, 'Nag(IX)SC - No data received')
 125                         return
 126
 127
 128
 129 def main():
 130         if options.nossl:
 131                 config['ssl'] = False
 132
 133         if config['ssl'] and not os.path.isfile(config['cert']):
 134                 print 'SSL certificate "%s" not found!' % config['cert']
 135                 sys.exit(127)
 136
 137         if options.daemon:
 138                 daemonize(pidfile='/var/run/nagixsc_http2nagios.pid')
 139
 140         server = MyHTTPServer((config['ip'], config['port']), HTTP2NagiosHandler, ssl=config['ssl'], sslpemfile=config['cert'])
 141         try:
 142                 server.serve_forever()
 143         except:
 144                 server.socket.close()
 145
 146 if __name__ == '__main__':
 147         print 'curl -v -u nagixsc:nagixsc -F \'xmlfile=@xml/nagixsc.xml\' http://127.0.0.1:15667/\n\n'
 148         main()
 149