649 lines
26 KiB
Python
Executable File
649 lines
26 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- encoding: utf-8; py-indent-offset: 4 -*-
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# +------------------------------------------------------------------+
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# | ____ _ _ __ __ _ __ |
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# | / ___| |__ ___ ___| | __ | \/ | |/ / |
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# | | | | '_ \ / _ \/ __| |/ / | |\/| | ' / |
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# | | |___| | | | __/ (__| < | | | | . \ |
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# | \____|_| |_|\___|\___|_|\_\___|_| |_|_|\_\ |
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# | |
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# | Copyright Mathias Kettner 2014 mk@mathias-kettner.de |
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# +------------------------------------------------------------------+
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#
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# This file is part of Check_MK.
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# The official homepage is at http://mathias-kettner.de/check_mk.
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#
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# check_mk is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation in version 2. check_mk is distributed
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# in the hope that it will be useful, but WITHOUT ANY WARRANTY; with-
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# out even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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# PARTICULAR PURPOSE. See the GNU General Public License for more de-
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# tails. You should have received a copy of the GNU General Public
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# License along with GNU Make; see the file COPYING. If not, write
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# to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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# Boston, MA 02110-1301 USA.
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import os, sys, stat
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opt_debug = "-d" in sys.argv or "--debug" in sys.argv
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# The following settings are tried to be autodetected
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target_values = {
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'apache_config_dir' : "Configuration directory of Apache",
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'cgiurl' : "URL of Nagios CGI programs",
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'check_icmp_path' : "Path to check_icmp Plugin",
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'htdocsdir' : "Directory of Nagios' static web pages",
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'htpasswd_file' : "File of Nagios' HTTP users and passwords",
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'livestatus_in_nagioscfg' : "Wether nagios.cfg loads livestatus module",
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'nagconfdir' : "Directory of Nagios objects (see cfg_dir)",
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'nagiosaddconf' : "Snippet to add to nagios.cfg",
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'nagios_auth_name' : "HTTP Basic AuthName for Nagios",
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'nagios_binary' : "Absolute path to Nagios binary itself",
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'nagios_version' : "Nagios version",
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'nagios_config_file': "Absolute path to nagios.cfg",
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'nagios_startscript': "Nagios startskript (usually in /etc/init.d)",
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'nagios_status_file': "Absolute path to Nagios' status.dat",
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'nagiosurl' : "Base-URL of Nagios web pages",
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'nagiosuser' : "System user running the Nagios process",
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'nagpipe' : "Absolute path to Nagios' command pipe (nagios.cmd)",
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'check_result_path' : "Absolute path to Nagios' checkresults directory",
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'pnp_url' : "URL of PNP4Nagios",
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'pnpconffile' : "PNP4Nagios configuration file for its PHP pages",
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'pnphtdocsdir' : "PNP4Nagios www document root directory",
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'pnptemplates' : "directory of PHP templates for PNP4Nagios",
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'rrddir' : "Base directory where RRDs are stored",
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'wwwgroup' : "Common group of Nagios and Apache",
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'wwwuser' : "System user apache runs with",
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}
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# Ich suche nach Prozessen mit folgenden Kriterien:
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# - Der Text 'nagios' im Namen
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# - eines der Worte muss '-d' oder '--daemon' sein.
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# - Das letzte Wort ist der Name einer existierenden Datei
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# Beispiel:
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# /usr/sbin/nagios3 -d /etc/nagios3/nagios.cfg
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class Sorry(Exception):
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def __init__(self, reason):
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self.reason = reason
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super(Sorry, self).__init__(reason)
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def find_pid_and_configfile():
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procs = os.popen("ps ax -o pid,ppid,user,command").readlines()
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pids = []
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for line in procs:
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if line.find('nagios.cfg') >= 0 or line.find('icinga.cfg') >= 0:
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pids.append(line.split()[0])
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for line in procs:
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if line.find('nagios.cfg') >= 0 or line.find('icinga.cfg') >= 0:
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try:
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words = line.split()
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if '-d' in words or '--daemon' in words:
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pid = words[0]
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ppid = words[1]
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user = words[2]
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configfile = words[-1]
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if ppid in pids:
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continue # this is not the main thread. It has
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# another process as parent!
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if os.path.exists(configfile):
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return int(pid), user, configfile
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except Exception, e:
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if opt_debug:
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raise
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raise Sorry("Cannot find Nagios/Icinga process. Is it running?")
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def find_apache_properties(nagiosuser, nagios_htdocs_dir):
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wwwuser = None
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# Search in running processes for Apache
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for line in os.popen("ps ax -o pid,user,command").readlines():
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parts = line.split()
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if len(parts) >= 3 and \
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(parts[2].endswith("/apache2") or \
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parts[2].endswith("/httpd") or \
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parts[2].endswith("/httpd2-prefork") or \
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parts[2].endswith("/httpd2-worker")
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) and \
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parts[1] != 'root':
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wwwuser = parts[1]
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apache_pid = int(parts[0])
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break
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if not wwwuser:
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raise Exception("Cannot find Apache process. Is it running?")
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def scan_apacheconf(apache_conffile):
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confdirs = []
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if apache_conffile[0] != '/':
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apache_conffile = httpd_root + "/" + apache_conffile
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confdirs = []
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for line in file(apache_conffile):
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parts = line.strip().split()
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if len(parts) == 2 and parts[0].lower() == "include":
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if parts[1].endswith("/") or parts[1].endswith("/*.conf"):
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confdir = "/".join(parts[1].split("/")[:-1])
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if confdir[0] != "/":
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confdir = httpd_root + "/" + confdir
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if not os.path.exists(confdir):
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continue
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confdirs.append(confdir) # put at front of list
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else:
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try:
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confdirs += scan_apacheconf(parts[1]) # recursive scan
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except:
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pass
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return confdirs
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# Find binary
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try:
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nagios_htpasswd_file = None
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nagios_auth_name = None
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apache_binary = process_executable(apache_pid)
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apache_conffile = None
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apache_confdir = None
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httpd_root = ""
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for line in os.popen("%s -V 2>&1" % apache_binary):
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parts = line.split()
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if parts[0] == "-D" and len(parts) > 1:
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p = parts[1].split("=")
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if len(p) == 2 and p[0] == "SERVER_CONFIG_FILE":
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apache_conffile = p[1].replace('"', "")
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elif len(p) == 2 and p[0] == "HTTPD_ROOT":
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httpd_root = p[1].replace('"', "")
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if apache_conffile:
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confdirs = scan_apacheconf(apache_conffile)
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if len(confdirs) > 0:
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apache_confdir = confdirs[0]
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for dir in confdirs:
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if dir.endswith("/conf.d"):
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apache_confdir = dir
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# Search for Nagios configuration. We are interested
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# in the authentication configuration. Most Nagios
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# installations use HTTP basic auth with a htpasswd
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# user file. We want to use that user file for the
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# check_mk web pages.
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def remove_quotes(text):
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try:
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if text[0] in '"\'':
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text = text[1:]
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if text[-1] in '"\'':
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text = text[:-1]
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except:
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pass
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return text
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auth_files = []
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auth_names = []
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try:
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for confdir in confdirs:
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for fn in os.listdir(confdir):
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file_good = False
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conffile = file(confdir + "/" + fn)
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try:
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new_auth_names = []
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new_auth_files = []
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for line in conffile:
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if nagios_htdocs_dir in line:
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file_good = True
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parts = line.split()
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if len(parts) == 2 and parts[0].lower() == "authuserfile":
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path = remove_quotes(parts[1])
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if os.path.exists(path):
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new_auth_files.append(path)
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if len(parts) > 1 and parts[0].lower() == "authname":
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parts = line.split(None, 1)
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new_auth_names.append(remove_quotes(parts[1].strip()))
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try:
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if len(parts) > 1 and parts[0].lower().startswith("<directory") and "pnp4nagios" in line:
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cleanedup = line.replace("<", "").replace(">", "").replace('"', "")
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cleanedup = cleanedup[9:]
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dir = cleanedup.strip()
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if os.path.exists(dir) and os.path.exists(dir + "/application/config/config.php"):
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result['pnphtdocsdir'] = dir
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result['pnptemplates'] = dir + "/templates"
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except Exception,e :
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pass
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if file_good:
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auth_names += new_auth_names
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auth_files += new_auth_files
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except Exception, e:
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pass
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if len(auth_files) > 0:
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nagios_htpasswd_file = auth_files[0]
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if len(auth_names) > 0:
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nagios_auth_name = auth_names[0]
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except:
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if opt_debug:
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raise
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pass
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except:
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if opt_debug:
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raise
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apache_confdir = None
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nagios_htpasswd_file = None
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www_groups = os.popen("id -nG " + wwwuser).read().split()
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nagios_groups = os.popen("id -nG " + nagiosuser).read().split()
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common_groups = [ g for g in www_groups if g in nagios_groups ]
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if len(common_groups) > 1:
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if 'nagios' in common_groups:
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common_group = 'nagios'
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elif 'icinga' in common_groups:
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common_group = 'icinga'
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else:
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common_group = common_groups[0]
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elif len(common_groups) == 1:
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common_group = common_groups[0]
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else:
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common_group = None
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return wwwuser, common_group, apache_confdir, nagios_htpasswd_file, nagios_auth_name
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def process_environment(pid):
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# Umgebung des Prozesses bestimmen. Ich brauch das nicht,
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# aber der folgende Code ist einfach cool, oder?
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try:
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env = {}
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for line in file("/proc/%d/environ" % pid).read().split("\0"):
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if '=' in line:
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var, value = entry.split('=', 1)
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env[var] = value
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return env
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except:
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raise Sorry("Cannot get environment of process %d. Aren't you root?" %
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pid)
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def process_executable(pid):
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try:
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return os.readlink("/proc/%d/exe" % pid).split(" ", 1)[0]
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except:
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raise Sorry("Cannot get executable of process %d. Aren't you root?" %
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pid)
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def open_files(pid):
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try:
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# Liste der offenen Dateien. Das ist schon nuetzlicher,
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# denn hier sieht man z.B. die Commandpipe
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procpath = "/proc/%d/fd" % pid
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return [ os.readlink(procpath + "/" + entry) for entry in os.listdir(procpath) ]
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except:
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raise Sorry("Cannot get open files of process %d. Aren't you root?" %
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pid)
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def find_pipes(filenames):
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pipes = []
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for f in filenames:
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try:
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mode = os.stat(f)[stat.ST_MODE]
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if stat.S_ISFIFO(mode):
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pipes.append(f)
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except:
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pass
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return pipes
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def parse_nagios_config(configfile):
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conf = []
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for line in file(configfile):
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line = line.strip()
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if line == "" or line[0] == '#':
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continue
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try:
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key, value = line.split('=', 1)
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conf.append((key, value))
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except:
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pass # ignore invalid line (as Nagios seems to do)
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return conf
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def detect_pnp():
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global result
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# Jetzt will ich noch das Verzeichnis fuer die Schablonen
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# von PNP finden. Ich erkenne es daran, dass es ein Verzeichnis
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# ist, in dem 'templates' und 'templates.dist' liegen. Dieses
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# Verzeichnis liegt hoffentlich innerhalb der Webseite von
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# Nagios selbst. Dieser Pfad ist in cgi.cfg festgelegt. Das ganze
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# klappt nur bei PNP 0.4
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if 'pnptemplates' not in result:
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try:
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found = []
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def func(arg, dirname, names):
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if 'templates' in names and 'templates.dist' in names:
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found.append(dirname + "/templates")
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os.path.walk(cgiconf['physical_html_path'], func, None)
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result['pnptemplates'] = found[0]
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if 'pnphtdocsdir' not in result:
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result['pnphtdocsdir'] = result['pnptemplates'].rsplit('/', 1)[0]
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except:
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pass
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# Suche die Konfigurationsdatei von PNP4Nagios. Denn ich will
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# den Eintrag finden, der auf die RRDs zeigt. Den braucht
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# check_mk für das direkte Eintragen in die RRD-Datenbanken
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try:
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pnppath = os.path.dirname(result['pnptemplates'])
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index_php = pnppath + "/index.php"
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for line in file(index_php):
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line = line.strip()
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# $config = "/usr/local/nagios/etc/pnp/config";
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if line.startswith('$config =') and line.endswith('";'):
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pnpconffile = line.split('"')[1] + ".php"
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result['pnpconffile'] = pnpconffile
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result['pnpconfdir'] = pnpconffile.rsplit("/", 1)[0]
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break
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except:
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pass
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try:
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# For PNP 0.6
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if 'pnpconffile' not in result:
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kohanaconf = result['pnphtdocsdir'] + "/application/config/config.php"
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if os.path.exists(kohanaconf):
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for line in file(kohanaconf):
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line = line.strip()
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if not line.startswith("#") and "pnp_etc_path" in line:
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last = line.split('=')[-1].strip()
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dir = last.replace("'", "").replace(";", "").replace('"', "")
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if os.path.exists(dir):
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result['pnpconfdir'] = dir
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result['pnpconffile'] = dir + "/config.php"
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except:
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pass
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try:
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for line in file(result['pnpconffile']):
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line = line.strip()
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if line.startswith("$conf['rrdbase']") and line.endswith('";'):
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rrddir = line.split('"')[1]
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if rrddir.endswith('/'):
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rrddir = rrddir[:-1]
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result['rrddir'] = rrddir
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elif (line.startswith("$conf['base_url']")
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or line.startswith("$conf['pnp_base']")) \
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and line.endswith(";"):
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pnp_url = line.split('"')[1]
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if not pnp_url.endswith("/"):
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pnp_url += "/"
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result["pnp_url"] = pnp_url
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except:
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pass
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def detect_omd():
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site = os.getenv("OMD_SITE")
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root = os.getenv("OMD_ROOT")
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if not site or not root:
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return None
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else:
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return {
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'apache_config_dir' : root + "/etc/apache/conf.d",
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'cgiurl' : "/" + site + "/nagios/cgi-bin/",
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'check_icmp_path' : root + "/lib/nagios/plugins/check_icmp",
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'htdocsdir' : root + "/share/nagios/htdocs",
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'htpasswd_file' : root + "/etc/htpasswd",
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'livestatus_in_nagioscfg' : False,
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'nagconfdir' : root + "/etc/nagios/conf.d",
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'nagiosaddconf' : "",
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'nagios_auth_name' : "OMD Monitoring Site " + site,
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'nagios_binary' : root + "/bin/nagios",
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'nagios_config_file' : root + "/tmp/nagios/nagios.cfg",
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'nagios_startscript' : root + "/etc/init.d/nagios",
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'nagios_status_file' : root + "/var/nagios/status.dat",
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'nagiosurl' : "/" + site + "/nagios/",
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'nagiosuser' : site,
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'nagpipe' : root + "/tmp/run/nagios.cmd",
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'check_result_path' : root + "/tmp/nagios/checkresults",
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'pnp_url' : "/" + site + "/pnp4nagios/",
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'pnpconffile' : root + "/etc/pnp4nagios/config.php",
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'pnphtdocsdir' : root + "/share/pnp4nagios/htdocs",
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'pnptemplates' : root + "/local/share/check_mk/pnp-templates",
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'rrddir' : root + "/var/pnp4nagios/perfdata",
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'wwwgroup' : site,
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'wwwuser' : site,
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}
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# _
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# _ __ ___ __ _(_)_ __
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# | '_ ` _ \ / _` | | '_ \
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# | | | | | | (_| | | | | |
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# |_| |_| |_|\__,_|_|_| |_|
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#
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try:
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result = detect_omd()
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if not result:
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result = {}
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pid, nagiosuser, configfile = find_pid_and_configfile()
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nagios_dir = os.path.dirname(configfile)
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result['nagios_config_file'] = configfile
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result['nagiosuser'] = nagiosuser
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pipes = find_pipes(open_files(pid))
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if len(pipes) > 0:
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result['nagpipe'] = pipes[0]
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# Path to executable
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result['nagios_binary'] = process_executable(pid)
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# Nagios version
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result['nagios_version'] = ""
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for line in os.popen(result["nagios_binary"]+ " --version 2>/dev/null"):
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if line.startswith("Nagios Core") or line.startswith("Icinga Core"):
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result['nagios_version'] = line.split()[2]
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# Path to startscript
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for path in [ '/etc/init.d/nagios', '/etc/init.d/nagios3', '/etc/init.d/icinga' ]:
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if os.path.exists(path):
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result['nagios_startscript'] = path
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break
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nagconf = parse_nagios_config(configfile)
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nagconf_dict = dict(nagconf)
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if "check_result_path" in nagconf_dict:
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result['check_result_path'] = nagconf_dict['check_result_path']
|
|
|
|
try:
|
|
cgifile = os.path.dirname(configfile) + "/cgi.cfg"
|
|
cgiconf = dict(parse_nagios_config(cgifile))
|
|
result['htdocsdir'] = cgiconf['physical_html_path']
|
|
except:
|
|
cgiconf = {}
|
|
|
|
# Suche nach cfg_dir Direktiven. Wir suchen
|
|
# einen flauschigen Platz fuer unsere Konfigdateien
|
|
cfg_dirs = [ value for key, value in nagconf if key == 'cfg_dir' ]
|
|
if len(cfg_dirs) > 0:
|
|
# Wenn es mehrere gibt, bevorzuge ich das, das im gleichen
|
|
# Verzeichnis, wie die Nagios-Konfigdatei selbst liegt.
|
|
# Debian legt ein cfg_dir fuer die Plugins an....
|
|
if len(cfg_dirs) == 1:
|
|
result['nagconfdir'] = cfg_dirs[0]
|
|
else:
|
|
dir = os.path.dirname(configfile)
|
|
for d in cfg_dirs:
|
|
if os.path.dirname(d) == dir:
|
|
result['nagconfdir'] = d
|
|
break
|
|
else:
|
|
result['nagconfdir'] = cfg_dirs[0]
|
|
else:
|
|
# Mist. Kein cfg_dir in nagios.cfg. Das ist z.B. bei
|
|
# der immer noch verbreiteten Defaultkonfig der Fall.
|
|
# Wir legen einfach selbst eins fest und hängen das
|
|
# eigenmächtig hinten an die Config an
|
|
nagconfdir = nagios_dir + "/check_mk.d"
|
|
result['nagconfdir'] = nagconfdir
|
|
result['nagiosaddconf'] = "cfg_dir=" + nagconfdir
|
|
|
|
# Find path to status.dat, the Nagios status file. We
|
|
# need that for the check_mk web pages. Normally the
|
|
# path is configured in nagios.cfg. If no - we still
|
|
# have a chance by parsing the output of nagios3stats.
|
|
nagios_status_file = nagconf_dict.get("status_file")
|
|
if not nagios_status_file:
|
|
for stats_name in [ "stats", "tats" ]:
|
|
try:
|
|
stats_bin = result['nagios_binary'] + stats_name
|
|
for line in os.popen(stats_bin + " 2>/dev/null"):
|
|
if line.startswith("Status File:"):
|
|
parts = line.split()
|
|
nagios_status_file = parts[-1]
|
|
break
|
|
elif line.startswith("Error reading status file"):
|
|
parts = line.split()
|
|
nagios_status_file = parts[-1][1:-1]
|
|
break
|
|
except:
|
|
pass
|
|
|
|
if nagios_status_file:
|
|
result['nagios_status_file'] = nagios_status_file
|
|
|
|
|
|
# Ermittle $USER1$ Variablen, da sie in den Plugin-Pfaden
|
|
# auftauchen koennen.
|
|
uservars = {}
|
|
try:
|
|
for line in file(nagconf_dict['resource_file']):
|
|
line = line.strip()
|
|
if line.startswith('$') and '=' in line:
|
|
varname, value = line.split('=', 1)
|
|
uservars[varname.strip()] = value.strip()
|
|
except:
|
|
pass
|
|
|
|
|
|
# Suche nach einem Eintrag zum Laden des livestatus
|
|
# Moduls. Er darf auch auskommentiert sein. Dann lassen
|
|
# wir den Benutzer damit in Ruhe
|
|
found = False
|
|
for line in file(configfile):
|
|
if "broker_module=" in line and "/livestatus.o" in line:
|
|
found = True
|
|
break
|
|
result['livestatus_in_nagioscfg'] = found
|
|
|
|
# Jetzt wird's schwieriger: Ich suche nach check_icmp.
|
|
# Ich will keinen find machen, da das erstens ewig
|
|
# dauern kann und zweitens eventl. eine falsche Stelle
|
|
# findet, z.B. innerhalb eines ausgepackten und kompilierten
|
|
# Quellcodes der nagios-plugins. Daher suche ich in
|
|
# allen Objektdateien von Nagios nach command_line.
|
|
# Damit ermittle ich alle Verzeichnisse, in denen Plugins
|
|
# liegen. Dort suche ich dann nach check_icmp. Zur Sicherheit
|
|
# suche ich aber auch unter '/usr/lib/nagios' und '/usr/local/nagios/libexec'
|
|
# und '/usr/local/nagios/plugins'
|
|
found = []
|
|
for dir in cfg_dirs:
|
|
os.path.walk(dir, lambda x,dirname,names: found.append((dirname, names)), None)
|
|
plugin_paths = []
|
|
for dirname, names in found:
|
|
for name in names:
|
|
if name.endswith(".cfg"):
|
|
path = dirname + "/" + name
|
|
try:
|
|
for line in file(path):
|
|
if line.strip() == '':
|
|
continue
|
|
parts = line.strip().split()
|
|
if parts[0] == "command_line":
|
|
path = parts[1]
|
|
for var, value in uservars.items():
|
|
path = path.replace(var, value)
|
|
if path.startswith('/') and path not in plugin_paths:
|
|
plugin_paths.append(path)
|
|
except:
|
|
pass
|
|
|
|
for dir in plugin_paths + \
|
|
[ '/usr/lib/nagios/plugins',
|
|
'/usr/lib64/nagios/plugins',
|
|
'/usr/local/nagios/libexec',
|
|
'/usr/local/nagios/plugins' ]:
|
|
try:
|
|
mode = os.stat(dir)[stat.ST_MODE]
|
|
if not stat.S_ISDIR(mode):
|
|
dir = os.path.dirname(dir)
|
|
filenames = os.listdir(dir)
|
|
|
|
for filename in filenames:
|
|
if filename == 'check_icmp':
|
|
result['check_icmp_path'] = dir + '/' + filename
|
|
break
|
|
except:
|
|
pass
|
|
|
|
|
|
# Die Basis-Url fuer Nagios ist leider auch nicht immer
|
|
# gleich
|
|
try:
|
|
result['nagiosurl'] = cgiconf['url_html_path']
|
|
result['cgiurl'] = result['nagiosurl'] + "/cgi-bin"
|
|
except:
|
|
pass
|
|
|
|
# Suche eine Gruppe, die Nagios mit dem Apache gemeinsam
|
|
# hat. Diese brauchen wir z.B. für logwatch
|
|
try:
|
|
wwwuser, wwwgroup, apache_confdir, nagios_htpasswd_file, nagios_auth_name = \
|
|
find_apache_properties(nagiosuser, result['htdocsdir'])
|
|
if wwwuser:
|
|
result['wwwuser'] = wwwuser
|
|
if wwwgroup:
|
|
result['wwwgroup'] = wwwgroup
|
|
if apache_confdir:
|
|
result['apache_config_dir'] = apache_confdir
|
|
if nagios_htpasswd_file:
|
|
result['htpasswd_file'] = nagios_htpasswd_file
|
|
if nagios_auth_name:
|
|
result['nagios_auth_name'] = nagios_auth_name
|
|
except Exception, e:
|
|
sys.stderr.write("\033[1;41;35m Cannot determine Apache properties. \033[0m\n"
|
|
"Reason: %s\n" % e)
|
|
|
|
|
|
detect_pnp()
|
|
|
|
print "# Result of autodetection"
|
|
for var, value in result.items():
|
|
print
|
|
descr = target_values.get(var)
|
|
if descr:
|
|
print "# %s" % descr
|
|
else:
|
|
print "# (unknown value)"
|
|
print "%s='%s'" % (var, value)
|
|
|
|
for var, descr in target_values.items():
|
|
if var not in result:
|
|
print
|
|
print "# %s" % descr
|
|
print "# NOT DETECTED: %s" % var
|
|
|
|
except Sorry, e:
|
|
sys.stderr.write("\033[1;41;35m Sorry: %s \033[0m\n" % e.reason)
|
|
sys.exit(1)
|
|
|
|
except Exception, e:
|
|
if opt_debug:
|
|
raise
|
|
else:
|
|
sys.stderr.write("* Sorry, something unexpected happened: %s\n\n" % e)
|
|
import traceback
|
|
traceback.print_exc()
|
|
sys.exit(1)
|