source: nscp/modules/CheckExternalScripts/CheckExternalScripts.h @ c5ec0c8

/**************************************************************************
*   Copyright (C) 2004-2007 by Michael Medin <michael@medin.name>         *
*                                                                         *
*   This code is part of NSClient++ - http://trac.nakednuns.org/nscp      *
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
*   This program is distributed in the hope that it will be useful,       *
*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
*   GNU General Public License for more details.                          *
*                                                                         *
*   You should have received a copy of the GNU General Public License     *
*   along with this program; if not, write to the                         *
*   Free Software Foundation, Inc.,                                       *
*   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
***************************************************************************/

NSC_WRAPPERS_MAIN();
#include <map>
#include <error.hpp>
#include <execute_process.hpp>

class CheckExternalScripts : public nscapi::impl::simple_plugin {
private:
        struct command_data {
                command_data() {}
                command_data(std::wstring alias, std::wstring command_, std::wstring arguments_) : alias(alias), command(command_) {
                        parser_arguments(arguments_);
                }
                void parser_arguments(std::wstring args) {
                        try {
                                boost::tokenizer<boost::escaped_list_separator<wchar_t>, std::wstring::const_iterator, std::wstring> 
                                        tok(args, boost::escaped_list_separator<wchar_t>(L'\\', L' ', L'\"'));
                                BOOST_FOREACH(std::wstring s, tok) {
                                        arguments.push_back(s);
                                }
                        } catch (const std::exception &e) {
                                NSC_LOG_ERROR(_T("Failed to parse arguments for command '") + alias + _T("', using old split string method: ") + utf8::to_unicode(e.what()));
                                strEx::splitList list = strEx::splitEx(args, _T(" "));
                                BOOST_FOREACH(std::wstring s, list) {
                                        arguments.push_back(s);
                                }
                        }
                }
                std::wstring get_argument() {
                        std::wstring args;
                        BOOST_FOREACH(std::wstring s, arguments) {
                                if (!args.empty())
                                        args += _T(" ");
                                args += s;
                        }
                        return args;
                }

                std::wstring alias;
                std::wstring command;
                std::list<std::wstring> arguments;
                std::wstring to_string() {
                        std::wstring args;
                        BOOST_FOREACH(std::wstring s, arguments) {
                                if (!args.empty())
                                        args += _T(" ");
                                args += s;
                        }
                        return command + _T("(") + get_argument() + _T(")");
                }
        };
        typedef std::map<std::wstring, command_data> command_list;
        command_list commands;
        command_list alias;
        unsigned int timeout;
        std::wstring scriptDirectory_;
        std::wstring root_;
        bool allowArgs_;
        bool allowNasty_;
        std::map<std::wstring,std::wstring> wrappings_;

public:
        CheckExternalScripts();
        virtual ~CheckExternalScripts();
        // Module calls
        bool loadModule();
        bool loadModuleEx(std::wstring alias, NSCAPI::moduleLoadMode mode);
        bool unloadModule();


        static std::wstring getModuleName() {
                return _T("Check External Scripts");
        }
        static nscapi::plugin_wrapper::module_version getModuleVersion() {
                nscapi::plugin_wrapper::module_version version = {0, 0, 1 };
                return version;
        }
        static std::wstring getModuleDescription() {
                return _T("A simple wrapper to run external scripts and batch files.");
        }

        bool hasCommandHandler();
        bool hasMessageHandler();
        NSCAPI::nagiosReturn handleRAWCommand(const wchar_t* char_command, const std::string &request, std::string &response);
        //NSCAPI::nagiosReturn handleCommand(const std::wstring command, std::list<std::wstring> arguments, std::wstring &message, std::wstring &perf);
        std::wstring getConfigurationMeta();

private:
        class NRPEException {
                std::wstring error_;
        public:
                NRPEException(std::wstring s) {
                        error_ = s;
                }
                std::wstring getMessage() {
                        return error_;
                }
        };


private:
        void addAllScriptsFrom(std::wstring path);
        void add_command(std::wstring key, std::wstring command) {
                strEx::token tok = strEx::getToken(command, ' ', true);
                add_command(key.c_str(), command, _T("Script: ") + tok.first);
        }
        void add_command(std::wstring key, std::wstring command, std::wstring alias) {
                strEx::token tok = strEx::getToken(command, ' ', true);
                boost::to_lower(key);
                command_data cd = command_data(key, tok.first, tok.second);
                commands[key.c_str()] = cd;
                register_command(key.c_str(), alias);
        }
        void add_alias(std::wstring key, std::wstring command) {
                strEx::token tok = strEx::getToken(command, ' ', true);
                boost::to_lower(key);
                command_data cd = command_data(key, tok.first, tok.second);
                alias[key.c_str()] = cd;
                register_command(key.c_str(), _T("Alias for: ") + cd.to_string());
        }
        void add_wrapping(std::wstring key, std::wstring command) {
                strEx::token tok = strEx::getToken(command, ' ', true);
                std::wstring::size_type pos = tok.first.find_last_of(_T("."));
                std::wstring type;
                if (pos != std::wstring::npos)
                        type = tok.first.substr(pos+1);

                std::wstring tpl = wrappings_[type];

                strEx::replace(tpl, _T("%SCRIPT%"), tok.first);
                strEx::replace(tpl, _T("%ARGS%"), tok.second);

                add_command(key,tpl,command);
        }
};