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                         'ip': '0.0.0.0',
  42                         'port': '15667',
  43                         'ssl': False,
  44                         'sslcert': None,
  45                         'conf_dir': '',
  46                         'pidfile': '/var/run/nagixsc_conf2http.pid'
  47                 }
  48
  49 if 'ip' in cfgread.options('server'):
  50         config['ip'] = cfgread.get('server', 'ip')
  51
  52 if 'port' in cfgread.options('server'):
  53         config['port'] = cfgread.get('server', 'port')
  54 try:
  55         config['port'] = int(config['port'])
  56 except ValueError:
  57         print 'Port "%s" not an integer!' % config['port']
  58         sys.exit(127)
  59
  60 if 'ssl' in cfgread.options('server'):
  61         try:
  62                 config['ssl'] = cfgread.getboolean('server', 'ssl')
  63         except ValueError:
  64                 print 'Value for "ssl" ("%s") not boolean!' % config['ssl']
  65                 sys.exit(127)
  66
  67 if config['ssl']:
  68         if 'sslcert' in cfgread.options('server'):
  69                 config['sslcert'] = cfgread.get('server', 'sslcert')
  70         else:
  71                 print 'SSL but no certificate file specified!'
  72                 sys.exit(127)
  73
  74 try:
  75         config['mode'] = cfgread.get('server', 'mode')
  76 except ConfigParser.NoOptionError:
  77         print 'No "mode" specified!'
  78         sys.exit(127)
  79
  80 if config['mode']=='checkresult':
  81         try:
  82                 config['checkresultdir'] = cfgread.get('mode_checkresult','dir')
  83         except ConfigParser.NoOptionError:
  84                 print 'No "dir" in section "mode_checkresult" specified!'
  85                 sys.exit(127)
  86
  87         if os.access(config['checkresultdir'],os.W_OK) == False:
  88                 print 'Checkresult directory "%s" is not writable!' % config['checkresultdir']
  89                 sys.exit(1)
  90
  91 elif config['mode']=='passive':
  92         try:
  93                 config['pipe'] = cfgread.get('mode_passive','pipe')
  94         except ConfigParser.NoOptionError:
  95                 print 'No "pipe" in section "mode_passive" specified!'
  96                 sys.exit(127)
  97
  98         if os.access(config['pipe'],os.W_OK) == False:
  99                 print 'Nagios command pipe "%s" is not writable!' % config['pipe']
 100                 sys.exit(1)
 101
 102 else:
 103         print 'Mode "%s" is neither "checkresult" nor "passive"!'
 104         sys.exit(127)
 105
 106
 107
 108 users = {}
 109 for u in cfgread.options('users'):
 110         users[u] = cfgread.get('users', u)
 111
 112 ##############################################################################
 113
 114 class HTTP2NagiosHandler(MyHTTPRequestHandler):
 115
 116         def http_error(self, code, output):
 117                 self.send_response(code)
 118                 self.send_header('Content-Type', 'text/plain')
 119                 self.end_headers()
 120                 self.wfile.write(output)
 121                 return
 122
 123
 124         def do_GET(self):
 125                 self.send_response(200)
 126                 self.send_header('Content-Type', 'text/html')
 127                 self.end_headers()
 128                 self.wfile.write('''                    <html><body>
 129                                 <form action="." method="post" enctype="multipart/form-data">
 130                                 filename: <input type="file" name="xmlfile" /><br />
 131                                 <input type="submit" />
 132                                 </form>
 133                         </body></html>
 134                         ''')
 135                 return
 136
 137
 138         def do_POST(self):
 139                 # Check Basic Auth
 140                 try:
 141                         authdata = base64.b64decode(self.headers['Authorization'].split(' ')[1]).split(':')
 142                         if not users[authdata[0]] == md5(authdata[1]).hexdigest():
 143                                 raise Exception
 144                 except:
 145                         self.send_response(401)
 146                         self.send_header('WWW-Authenticate', 'Basic realm="Nag(ix)SC HTTP Push"')
 147                         self.send_header('Content-Type', 'text/plain')
 148                         self.end_headers()
 149                         self.wfile.write('Sorry! No action without login!')
 150                         return
 151
 152                 (ctype,pdict) = cgi.parse_header(self.headers.getheader('content-type'))
 153                 if ctype == 'multipart/form-data':
 154                         query = cgi.parse_multipart(self.rfile, pdict)
 155                 xmltext = query.get('xmlfile')[0]
 156
 157                 if len(xmltext) > 0:
 158                         doc = read_xml_from_string(xmltext)
 159                         checks = xml_to_dict(doc)
 160
 161                         if config['mode'] == 'checkresult':
 162                                 (count_services, count_failed, list_failed) = dict2out_checkresult(checks, xml_get_timestamp(doc), config['checkresultdir'])
 163
 164                                 if count_failed < count_services:
 165                                         self.send_response(200)
 166                                         self.send_header('Content-Type', 'text/plain')
 167                                         self.end_headers()
 168                                         self.wfile.write('Wrote %s check results, %s failed' % (count_services, count_failed))
 169                                         return
 170                                 else:
 171                                         self.http_error(501, 'Could not write all %s check results' % count_services)
 172                                         return
 173
 174                         elif config['mode'] == 'passive':
 175                                 count_services = dict2out_passive(checks, xml_get_timestamp(doc), config['pipe'])
 176
 177                                 self.send_response(200)
 178                                 self.send_header('Content-Type', 'text/plain')
 179                                 self.end_headers()
 180                                 self.wfile.write('Wrote %s check results' % count_services)
 181                                 return
 182
 183                 else:
 184                         self.http_error(502, 'Nag(IX)SC - No data received')
 185                         return
 186
 187
 188
 189 def main():
 190         if options.nossl:
 191                 config['ssl'] = False
 192
 193         if config['ssl'] and not os.path.isfile(config['sslcert']):
 194                 print 'SSL certificate "%s" not found!' % config['sslcert']
 195                 sys.exit(127)
 196
 197         if options.daemon:
 198                 daemonize(pidfile=config['pidfile'])
 199         else:
 200                 print 'curl -v -u nagixsc:nagixsc -F \'xmlfile=@xml/nagixsc.xml\' http://127.0.0.1:%s/\n\n' % config['port']
 201
 202         server = MyHTTPServer((config['ip'], config['port']), HTTP2NagiosHandler, ssl=config['ssl'], sslpemfile=config['sslcert'])
 203         try:
 204                 server.serve_forever()
 205         except:
 206                 server.socket.close()
 207
 208 if __name__ == '__main__':
 209         main()
 210