| 1 | /**************************************************************************
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| 2 | * Copyright (C) 2004-2007 by Michael Medin <michael@medin.name> *
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| 3 | * *
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| 4 | * This code is part of NSClient++ - http://trac.nakednuns.org/nscp *
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| 5 | * *
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| 6 | * This program is free software; you can redistribute it and/or modify *
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| 7 | * it under the terms of the GNU General Public License as published by *
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| 8 | * the Free Software Foundation; either version 2 of the License, or *
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| 9 | * (at your option) any later version. *
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| 10 | * *
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| 11 | * This program is distributed in the hope that it will be useful, *
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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| 14 | * GNU General Public License for more details. *
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| 15 | * *
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| 16 | * You should have received a copy of the GNU General Public License *
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| 17 | * along with this program; if not, write to the *
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| 18 | * Free Software Foundation, Inc., *
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| 19 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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| 20 | ***************************************************************************/
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| 21 | #include "stdafx.h"
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| 22 | #include "CheckExternalScripts.h"
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| 23 | #include <time.h>
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| 24 |
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| 25 | #include <settings/macros.h>
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| 26 | #include <msvc_wrappers.h>
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| 27 | #include <config.h>
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| 28 | #include <strEx.h>
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| 29 | #include <file_helpers.hpp>
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| 30 | #include <file_helpers.hpp>
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| 31 |
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| 32 | #include <boost/regex.hpp>
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| 33 | #include <boost/filesystem.hpp>
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| 34 |
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| 35 |
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| 36 | CheckExternalScripts gCheckExternalScripts;
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| 37 |
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| 38 | CheckExternalScripts::CheckExternalScripts() {}
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| 39 | CheckExternalScripts::~CheckExternalScripts() {}
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| 40 |
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| 41 | void CheckExternalScripts::addAllScriptsFrom(std::wstring str_path) {
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| 42 | boost::filesystem::wpath path = str_path;
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| 43 | if (path.has_relative_path())
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| 44 | path = NSCModuleHelper::getBasePath() / path;
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| 45 | file_helpers::patterns::pattern_type split_path = file_helpers::patterns::split_pattern(path);
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| 46 | if (!boost::filesystem::is_directory(split_path.first))
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| 47 | NSC_LOG_ERROR_STD(_T("Path was not found: ") + split_path.first.string());
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| 48 |
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| 49 | boost::wregex pattern(split_path.second);
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| 50 | boost::filesystem::wdirectory_iterator end_itr; // default construction yields past-the-end
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| 51 | for ( boost::filesystem::wdirectory_iterator itr( split_path.first ); itr != end_itr; ++itr ) {
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| 52 | if ( !is_directory(itr->status()) ) {
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| 53 | std::wstring name = itr->path().leaf();
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| 54 | if (regex_match(name, pattern))
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| 55 | addCommand(name, (split_path.first / name).string(), _T(""));
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| 56 | }
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| 57 | }
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| 58 | }
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| 59 |
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| 60 | bool CheckExternalScripts::loadModule(NSCAPI::moduleLoadMode mode) {
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| 61 | SETTINGS_REG_PATH(external_scripts::SECTION);
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| 62 | SETTINGS_REG_PATH(external_scripts::SCRIPT_SECTION);
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| 63 | SETTINGS_REG_PATH(external_scripts::ALIAS_SECTION);
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| 64 | SETTINGS_REG_KEY_I(external_scripts::TIMEOUT);
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| 65 | SETTINGS_REG_KEY_S(external_scripts::SCRIPT_PATH);
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| 66 | SETTINGS_REG_KEY_B(external_scripts::ALLOW_ARGS);
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| 67 | SETTINGS_REG_KEY_B(external_scripts::ALLOW_NASTY);
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| 68 |
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| 69 | timeout = SETTINGS_GET_INT(external_scripts::TIMEOUT);
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| 70 | scriptDirectory_ = SETTINGS_GET_STRING(external_scripts::SCRIPT_PATH);
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| 71 | allowArgs_ = SETTINGS_GET_BOOL(nrpe::ALLOW_ARGS);
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| 72 | allowNasty_ = SETTINGS_GET_BOOL(nrpe::ALLOW_NASTY);
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| 73 | std::list<std::wstring>::const_iterator it;
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| 74 | std::list<std::wstring> commands = NSCModuleHelper::getSettingsSection(setting_keys::external_scripts::SCRIPT_SECTION_PATH);
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| 75 | for (it = commands.begin(); it != commands.end(); ++it) {
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| 76 | if ((*it).empty())
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| 77 | continue;
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| 78 | NSC_DEBUG_MSG_STD(_T("Looking under: ") + setting_keys::external_scripts::SCRIPT_SECTION_PATH + _T(", ") + (*it));
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| 79 | std::wstring s = NSCModuleHelper::getSettingsString(setting_keys::external_scripts::SCRIPT_SECTION_PATH, (*it), _T(""));
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| 80 | if (s.empty()) {
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| 81 | NSC_LOG_ERROR_STD(_T("Invalid command definition: ") + (*it));
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| 82 | } else {
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| 83 | strEx::token tok = strEx::getToken(s, ' ', true);
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| 84 | addCommand((*it).c_str(), tok.first, tok.second);
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| 85 | }
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| 86 | }
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| 87 |
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| 88 | commands = NSCModuleHelper::getSettingsSection(setting_keys::external_scripts::ALIAS_SECTION_PATH);
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| 89 | for (it = commands.begin(); it != commands.end(); ++it) {
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| 90 | if ((*it).empty())
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| 91 | continue;
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| 92 | std::wstring s = NSCModuleHelper::getSettingsString(setting_keys::external_scripts::ALIAS_SECTION_PATH, (*it), _T(""));
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| 93 | if (s.empty()) {
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| 94 | NSC_LOG_ERROR_STD(_T("Invalid command definition: ") + (*it));
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| 95 | } else {
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| 96 | strEx::token tok = strEx::getToken(s, ' ', true);
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| 97 | addAlias((*it).c_str(), tok.first, tok.second);
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| 98 | }
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| 99 | }
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| 100 |
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| 101 | if (!scriptDirectory_.empty()) {
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| 102 | addAllScriptsFrom(scriptDirectory_);
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| 103 | }
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| 104 | root_ = NSCModuleHelper::getBasePath();
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| 105 | return true;
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| 106 | }
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| 107 | bool CheckExternalScripts::unloadModule() {
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| 108 | return true;
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| 109 | }
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| 110 |
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| 111 |
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| 112 | bool CheckExternalScripts::hasCommandHandler() {
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| 113 | return true;
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| 114 | }
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| 115 | bool CheckExternalScripts::hasMessageHandler() {
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| 116 | return false;
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| 117 | }
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| 118 |
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| 119 |
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| 120 | NSCAPI::nagiosReturn CheckExternalScripts::handleCommand(const std::wstring command, std::list<std::wstring> arguments, std::wstring &message, std::wstring &perf) {
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| 121 | std::wstring cmd = command.c_str();
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| 122 | boost::to_lower(cmd);
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| 123 | command_list::const_iterator cit = commands.find(cmd);
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| 124 | bool isAlias = false;
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| 125 | if (cit == commands.end()) {
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| 126 | cit = alias.find(cmd);
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| 127 | if (cit == alias.end())
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| 128 | return NSCAPI::returnIgnored;
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| 129 | isAlias = true;
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| 130 | }
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| 131 |
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| 132 | const command_data cd = (*cit).second;
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| 133 | std::wstring args = cd.arguments;
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| 134 | if (isAlias || allowArgs_) {
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| 135 | int i=1;
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| 136 | BOOST_FOREACH(std::wstring str, arguments) {
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| 137 | if (isAlias || allowNasty_) {
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| 138 | if (str.find_first_of(NASTY_METACHARS) != std::wstring::npos) {
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| 139 | NSC_LOG_ERROR(_T("Request string contained illegal metachars!"));
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| 140 | return NSCAPI::returnIgnored;
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| 141 | }
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| 142 | }
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| 143 | strEx::replace(args, _T("$ARG") + strEx::itos(i) + _T("$"), str);
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| 144 | }
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| 145 | }
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| 146 | if (isAlias) {
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| 147 | return NSCModuleHelper::InjectSplitAndCommand(cd.command, args, ' ', message, perf, true);
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| 148 | } else {
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| 149 | int result = process::executeProcess(process::exec_arguments(root_, cd.command + _T(" ") + args, timeout), message, perf);
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| 150 | if (!NSCHelper::isNagiosReturnCode(result)) {
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| 151 | NSC_LOG_ERROR_STD(_T("The command (") + cd.command + _T(") returned an invalid return code: ") + strEx::itos(result));
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| 152 | return NSCAPI::returnUNKNOWN;
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| 153 | }
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| 154 | return NSCHelper::int2nagios(result);
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| 155 | /*
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| 156 | } else if (cd.type == script_dir) {
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| 157 | std::wstring args = arrayBuffer::arrayBuffer2string(char_args, argLen, _T(" "));
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| 158 | std::wstring cmd = scriptDirectory_ + command.c_str() + _T(" ") +args;
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| 159 | return executeNRPECommand(cmd, message, perf);
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| 160 | } else {
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| 161 | NSC_LOG_ERROR_STD(_T("Unknown script type: ") + command.c_str());
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| 162 | return NSCAPI::critical;
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| 163 | */
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| 164 | }
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| 165 |
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| 166 | }
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| 167 |
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| 168 |
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| 169 | NSC_WRAP_DLL();
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| 170 | NSC_WRAPPERS_MAIN_DEF(gCheckExternalScripts);
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| 171 | NSC_WRAPPERS_IGNORE_MSG_DEF();
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| 172 | NSC_WRAPPERS_HANDLE_CMD_DEF(gCheckExternalScripts);
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| 173 | NSC_WRAPPERS_HANDLE_CONFIGURATION(gCheckExternalScripts);
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| 174 |
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| 175 |
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| 176 | MODULE_SETTINGS_START(CheckExternalScripts, _T("NRPE Listener configuration"), _T("..."))
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| 177 |
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| 178 | PAGE(_T("NRPE Listsner configuration"))
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| 179 |
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| 180 | ITEM_EDIT_TEXT(_T("port"), _T("This is the port the CheckExternalScripts.dll will listen to."))
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| 181 | ITEM_MAP_TO(_T("basic_ini_text_mapper"))
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| 182 | OPTION(_T("section"), _T("NRPE"))
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| 183 | OPTION(_T("key"), _T("port"))
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| 184 | OPTION(_T("default"), _T("5666"))
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| 185 | ITEM_END()
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| 186 |
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| 187 | ITEM_CHECK_BOOL(_T("allow_arguments"), _T("This option determines whether or not the NRPE daemon will allow clients to specify arguments to commands that are executed."))
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| 188 | ITEM_MAP_TO(_T("basic_ini_bool_mapper"))
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| 189 | OPTION(_T("section"), _T("NRPE"))
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| 190 | OPTION(_T("key"), _T("allow_arguments"))
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| 191 | OPTION(_T("default"), _T("false"))
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| 192 | OPTION(_T("true_value"), _T("1"))
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| 193 | OPTION(_T("false_value"), _T("0"))
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| 194 | ITEM_END()
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| 195 |
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| 196 | ITEM_CHECK_BOOL(_T("allow_nasty_meta_chars"), _T("This might have security implications (depending on what you do with the options)"))
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| 197 | ITEM_MAP_TO(_T("basic_ini_bool_mapper"))
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| 198 | OPTION(_T("section"), _T("NRPE"))
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| 199 | OPTION(_T("key"), _T("allow_nasty_meta_chars"))
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| 200 | OPTION(_T("default"), _T("false"))
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| 201 | OPTION(_T("true_value"), _T("1"))
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| 202 | OPTION(_T("false_value"), _T("0"))
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| 203 | ITEM_END()
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| 204 |
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| 205 | ITEM_CHECK_BOOL(_T("use_ssl"), _T("This option will enable SSL encryption on the NRPE data socket (this increases security somwhat."))
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| 206 | ITEM_MAP_TO(_T("basic_ini_bool_mapper"))
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| 207 | OPTION(_T("section"), _T("NRPE"))
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| 208 | OPTION(_T("key"), _T("use_ssl"))
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| 209 | OPTION(_T("default"), _T("true"))
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| 210 | OPTION(_T("true_value"), _T("1"))
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| 211 | OPTION(_T("false_value"), _T("0"))
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| 212 | ITEM_END()
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| 213 |
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| 214 | PAGE_END()
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| 215 | ADVANCED_PAGE(_T("Access configuration"))
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| 216 |
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| 217 | ITEM_EDIT_OPTIONAL_LIST(_T("Allow connection from:"), _T("This is the hosts that will be allowed to poll performance data from the NRPE server."))
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| 218 | OPTION(_T("disabledCaption"), _T("Use global settings (defined previously)"))
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| 219 | OPTION(_T("enabledCaption"), _T("Specify hosts for NRPE server"))
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| 220 | OPTION(_T("listCaption"), _T("Add all IP addresses (not hosts) which should be able to connect:"))
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| 221 | OPTION(_T("separator"), _T(","))
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| 222 | OPTION(_T("disabled"), _T(""))
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| 223 | ITEM_MAP_TO(_T("basic_ini_text_mapper"))
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| 224 | OPTION(_T("section"), _T("NRPE"))
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| 225 | OPTION(_T("key"), _T("allowed_hosts"))
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| 226 | OPTION(_T("default"), _T(""))
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| 227 | ITEM_END()
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| 228 |
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| 229 | PAGE_END()
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| 230 | MODULE_SETTINGS_END()
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