Code

Rework http2nagios (and xml2nagios) and add SSL
[nagixsc.git] / nagixsc.py
index 4f834869f236ff6ba35bc2299ffe413cecf9fd0f..191d26e2f0a1e90b9f6197f450a8c2f53cc61ac4 100644 (file)
@@ -1,6 +1,15 @@
+import BaseHTTPServer
+import ConfigParser
+import SocketServer
 import base64
 import datetime
 import libxml2
+import os
+import random
+import shlex
+import socket
+import string
+import subprocess
 import sys
 
 def debug(level, verb, string):
@@ -14,6 +23,13 @@ def available_encodings():
        return ['base64', 'plain',]
 
 
+def check_encoding(enc):
+       if enc in available_encodings():
+               return True
+       else:
+               return False
+
+
 def decode(data, encoding):
        if encoding == 'plain':
                return data
@@ -28,6 +44,161 @@ def encode(data, encoding=None):
                return base64.b64encode(data)
 
 
+##############################################################################
+
+def read_inifile(inifile):
+       config = ConfigParser.RawConfigParser()
+       config.optionxform = str # We need case-sensitive options
+       ini_list = config.read(inifile)
+
+       if ini_list:
+               return config
+       else:
+               return False
+
+
+##############################################################################
+
+def exec_check(host_name, service_descr, cmdline):
+       try:
+               cmd     = subprocess.Popen(shlex.split(cmdline), stdout=subprocess.PIPE)
+               output  = cmd.communicate()[0].rstrip()
+               retcode = cmd.returncode
+       except OSError:
+               output  = 'Could not execute "%s"' % cmdline
+               retcode = 127
+
+       return {'host_name':host_name, 'service_description':service_descr, 'returncode':retcode, 'output':output, 'timestamp':datetime.datetime.now().strftime('%s')}
+
+
+##############################################################################
+
+def conf2dict(config, opt_host=None, opt_service=None):
+       checks = []
+
+       # Sections are Hosts (not 'nagixsc'), options in sections are Services
+       hosts = config.sections()
+       if 'nagixsc' in hosts:
+               hosts.remove('nagixsc')
+
+       # Filter out host/section if it exists
+       if opt_host:
+               if opt_host in hosts:
+                       hosts = [opt_host,]
+               else:
+                       hosts = []
+
+       for host in hosts:
+               # Overwrite section/host name with '_host_name'
+               if config.has_option(host,'_host_name'):
+                       host_name = config.get(host,'_host_name')
+               else:
+                       host_name = host
+
+
+               services = config.options(host)
+               # Look for host check
+               if '_host_check' in services and not opt_service:
+                       cmdline = config.get(host, '_host_check')
+                       check = exec_check(host_name, None, cmdline)
+                       checks.append(check)
+
+
+               # Filter out service if given in cmd line options
+               if opt_service:
+                       if opt_service in services:
+                               services = [opt_service,]
+                       else:
+                               services = []
+
+               for service in services:
+                       # If option starts with '_' it may be a NagixSC option in the future
+                       if service[0] != '_':
+                               cmdline = config.get(host, service)
+
+                               check = exec_check(host_name, service, cmdline)
+                               checks.append(check)
+
+       return checks
+
+
+##############################################################################
+
+def dict2out_passive(checks, xmltimestamp, opt_pipe, opt_verb=0):
+       FORMAT_HOST = '[%s] PROCESS_HOST_CHECK_RESULT;%s;%s;%s'
+       FORMAT_SERVICE = '[%s] PROCESS_SERVICE_CHECK_RESULT;%s;%s;%s;%s'
+       count_services = 0
+       now = datetime.datetime.now().strftime('%s')
+
+       # Prepare
+       if opt_verb <= 2:
+               pipe = open(opt_pipe, "w")
+       else:
+               pipe = None
+
+       # Output
+       for check in checks:
+               count_services += 1
+               if check.has_key('timestamp'):
+                       timestamp = check['timestamp']
+               else:
+                       timestamp = xmltimestamp
+               count_services += 1
+
+               if check['service_description'] == None or check['service_description'] == '':
+                       # Host check
+                       line = FORMAT_HOST % (now, check['host_name'], check['returncode'], check['output'].replace('\n', '\\n'))
+               else:
+                       # Service check
+                       line =  FORMAT_SERVICE % (now, check['host_name'], check['service_description'], check['returncode'], check['output'].replace('\n', '\\n'))
+
+               if pipe:
+                       pipe.write(line + '\n')
+               debug(2, opt_verb, line)
+
+       # Close
+       if pipe:
+               pipe.close()
+       else:
+               print "Passive check results NOT written to Nagios pipe due to -vvv!"
+
+       return count_services
+
+
+def dict2out_checkresult(checks, xmltimestamp, opt_checkresultdir, opt_verb):
+       count_services = 0
+       count_failed = 0
+       list_failed = []
+       chars = string.letters + string.digits
+       ctimestamp = datetime.datetime.now().ctime()
+
+       for check in checks:
+               count_services += 1
+               if check.has_key('timestamp'):
+                       timestamp = check['timestamp']
+               else:
+                       timestamp = xmltimestamp
+
+               filename = os.path.join(opt_checkresultdir, 'c' + ''.join([random.choice(chars) for i in range(6)]))
+               try:
+                       crfile = open(filename, "w")
+                       if check['service_description'] == None or check['service_description'] == '':
+                               # Host check
+                               crfile.write('### Active Check Result File ###\nfile_time=%s\n\n### Nagios Service Check Result ###\n# Time: %s\nhost_name=%s\ncheck_type=0\ncheck_options=0\nscheduled_check=1\nreschedule_check=1\nlatency=0.0\nstart_time=%s.00\nfinish_time=%s.05\nearly_timeout=0\nexited_ok=1\nreturn_code=%s\noutput=%s\n' % (timestamp, ctimestamp, check['host_name'], timestamp, timestamp, check['returncode'], check['output'].replace('\n', '\\n') ) )
+                       else:
+                               # Service check
+                               crfile.write('### Active Check Result File ###\nfile_time=%s\n\n### Nagios Service Check Result ###\n# Time: %s\nhost_name=%s\nservice_description=%s\ncheck_type=0\ncheck_options=0\nscheduled_check=1\nreschedule_check=1\nlatency=0.0\nstart_time=%s.00\nfinish_time=%s.05\nearly_timeout=0\nexited_ok=1\nreturn_code=%s\noutput=%s\n' % (timestamp, ctimestamp, check['host_name'], check['service_description'], timestamp, timestamp, check['returncode'], check['output'].replace('\n', '\\n') ) )
+                       crfile.close()
+
+                       # Create OK file
+                       open(filename + '.ok', 'w').close()
+               except:
+                       count_failed += 1
+                       list_failed.append([filename, check['host_name'], check['service_description']])
+
+       return (count_services, count_failed, list_failed)
+
+
 ##############################################################################
 
 def read_xml(options):
@@ -59,6 +230,10 @@ def read_xml(options):
        return doc
 
 
+def read_xml_from_string(content):
+       return libxml2.parseDoc(content)
+
+
 ##############################################################################
 
 def xml_check_version(xmldoc):
@@ -88,7 +263,8 @@ def xml_get_timestamp(xmldoc):
 
 def xml_to_dict(xmldoc, verb=0, hostfilter=None, servicefilter=None):
        checks = []
-       filetimestamp = xml_get_timestamp(xmldoc)
+       now = int(datetime.datetime.now().strftime('%s'))
+       filetimestamp = reset_future_timestamp(xml_get_timestamp(xmldoc), now)
 
        if hostfilter:
                hosts = xmldoc.xpathNewContext().xpathEval('/nagixsc/host[name="%s"] | /nagixsc/host[name="%s"]' % (hostfilter, encode(hostfilter)))
@@ -113,7 +289,7 @@ def xml_to_dict(xmldoc, verb=0, hostfilter=None, servicefilter=None):
                        output    = None
 
                if host.xpathEval('timestamp'):
-                       timestamp = int(host.xpathEval('timestamp')[0].get_content())
+                       timestamp = reset_future_timestamp(int(host.xpathEval('timestamp')[0].get_content()), now)
                else:
                        timestamp = filetimestamp
 
@@ -139,7 +315,7 @@ def xml_to_dict(xmldoc, verb=0, hostfilter=None, servicefilter=None):
                        output   = decode(xmloutput.get_content(), xmloutput.prop('encoding')).rstrip()
 
                        try:
-                               timestamp = int(service.xpathEval('timestamp')[0].get_content())
+                               timestamp = reset_future_timestamp(int(service.xpathEval('timestamp')[0].get_content()), now)
                        except:
                                timestamp = filetimestamp
 
@@ -201,3 +377,43 @@ def check_mark_outdated(check, now, maxtimediff, markold):
                        check['returncode'] = 3
        return check
 
+
+def reset_future_timestamp(timestamp, now):
+       if timestamp <= now:
+               return timestamp
+       else:
+               return now
+
+##############################################################################
+
+class MyHTTPServer(BaseHTTPServer.HTTPServer):
+       def __init__(self, server_address, HandlerClass, ssl=False, sslpemfile=None):
+               if ssl:
+                       # FIXME: SSL is in Py2.6
+                       try:
+                               from OpenSSL import SSL
+                       except:
+                               print 'No Python OpenSSL wrapper/bindings found!'
+                               sys.exit(127)
+
+                       SocketServer.BaseServer.__init__(self, server_address, HandlerClass)
+                       context = SSL.Context(SSL.SSLv23_METHOD)
+                       context.use_privatekey_file (sslpemfile)
+                       context.use_certificate_file(sslpemfile)
+                       self.socket = SSL.Connection(context, socket.socket(self.address_family, self.socket_type))
+               else:
+                       SocketServer.BaseServer.__init__(self, server_address, HandlerClass)
+                       self.socket = socket.socket(self.address_family, self.socket_type)
+
+               self.server_bind()
+               self.server_activate()
+
+
+class MyHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
+       def setup(self):
+               self.connection = self.request
+               self.rfile = socket._fileobject(self.request, "rb", self.rbufsize)
+               self.wfile = socket._fileobject(self.request, "wb", self.wbufsize)
+
+##############################################################################
+