]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_helpop.cpp
Various improvements for the helpop module.
[user/henk/code/inspircd.git] / src / modules / m_helpop.cpp
index 120e95d8b45d49089e04a1b6f65da9cfd9387a22..a34e3ff9407889b523eee56950ff28fe0ac5d772 100644 (file)
-/*   +------------------------------------+
- *   | Inspire Internet Relay Chat Daemon |
- *   +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
- *   E-mail:
- *<brain@chatspike.net>
- *       <Craig@chatspike.net>
- * 
- * Written by Craig Edwards, Craig McLure, and others.
- * This program is free but copyrighted software; see
- *the file COPYING for details.
+ *   Copyright (C) 2013-2015 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2013, 2017-2018, 2020 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2006-2007 Craig Edwards <brain@inspircd.org>
  *
- * ---------------------------------------------------
+ * This file is part of InspIRCd.  InspIRCd 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, version 2.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
  */
 
-using namespace std;
 
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
 #include "inspircd.h"
+#include "modules/whois.h"
 
-// Global Vars
-static ConfigReader *helpop;
-
-bool do_helpop(const char**, int, userrec*);
-void sendtohelpop(userrec*, int, const char**);
-
-/* $ModDesc: /helpop Command, Works like Unreal helpop */
-
-/** Handles user mode +h
- */
-class Helpop : public ModeHandler
+enum
 {
- public:
-       Helpop(InspIRCd* Instance) : ModeHandler(Instance, 'h', 0, 0, false, MODETYPE_USER, true) { }
-
-       ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
-       {
-               if (adding)
-               {
-                       if (!dest->IsModeSet('h'))
-                       {
-                               dest->SetMode('h',true);
-                               return MODEACTION_ALLOW;
-                       }
-               }
-               else
-               {
-                       if (dest->IsModeSet('h'))
-                       {
-                               dest->SetMode('h',false);
-                               return MODEACTION_ALLOW;
-                       }
-               }
-
-               return MODEACTION_DENY;
-       }
+       // From UnrealIRCd.
+       RPL_WHOISHELPOP = 310,
+
+       // From ircd-ratbox.
+       ERR_HELPNOTFOUND = 524,
+       RPL_HELPSTART = 704,
+       RPL_HELPTXT = 705,
+       RPL_ENDOFHELP = 706
 };
 
-/** Handles /HELPOP
- */
-class cmd_helpop : public command_t
-{
- public:
-        cmd_helpop (InspIRCd* Instance) : command_t(Instance, "HELPOP", 0, 1)
-        {
-                this->source = "m_helpop.so";
-                syntax = "[?|!]<any-text>";
-        }
-
-       CmdResult Handle (const char** parameters, int pcnt, userrec *user)
-       {
-               char a[MAXBUF];
-               std::string output = " ";
-
-               if (!helpop)
-                       return CMD_FAILURE;
-
-               if (pcnt < 1)
-               {
-                       do_helpop(NULL,pcnt,user);
-                       return CMD_SUCCESS;
-               }
+typedef std::vector<std::string> HelpMessage;
 
-               if (*parameters[0] == '!')
-               {
-                       // Force send to all +h users
-                       sendtohelpop(user, pcnt, parameters);
-               }
-               else if (*parameters[0] == '?')
-               {
-                       // Force to the helpop system with no forward if not found.
-                       if (do_helpop(parameters, pcnt, user) == false)
-                       {
-                               // Not handled by the Database, Tell the user, and bail.
-                               for (int i = 1; output != ""; i++)
-                               {
-                                       snprintf(a,MAXBUF,"line%d",i);
-                                       output = helpop->ReadValue("nohelp", std::string(a), 0);
-       
-                                       if(output != "")
-                                       {
-                                               user->WriteServ("290 "+std::string(user->nick)+" :"+output);
-                                       }
-                               }
-                       }
-               }
-               else
-               {
-                       // Check with the helpop database, if not found send to +h
-                       if (do_helpop(parameters, pcnt, user) == false)
-                       {
-                               // Not handled by the Database, Tell the user, and forward.
-                               for (int i = 1; output != ""; i++)
-                               {
-                                       snprintf(a,MAXBUF,"line%d",i);
-                                       /* "nohelpo" for opers "nohelp" for users */
-                                       output = helpop->ReadValue("nohelpo", std::string(a), 0);
-                                       if (output != "")
-                                       {
-                                               user->WriteServ("290 "+std::string(user->nick)+" :"+output);
-                                       }
-                               }
-                               // Forward.
-                               sendtohelpop(user, pcnt, parameters);
-                       }
-               }
+typedef std::map<std::string, HelpMessage, irc::insensitive_swo> HelpMap;
 
-               return CMD_SUCCESS;
-       }
+class CommandHelpop : public Command
+{
+ private:
+       const std::string startkey;
 
+ public:
+       HelpMap help;
+       std::string nohelp;
 
-       bool do_helpop(const char** parameters, int pcnt, userrec *src)
+       CommandHelpop(Module* Creator)
+               : Command(Creator, "HELPOP", 0)
+               , startkey("start")
        {
-               char search[MAXBUF];
-               std::string output = " "; // a fix bought to you by brain :p
-               char a[MAXBUF];
-               int nlines = 0;
-
-               if (!pcnt)
-               {
-                       strcpy(search,"start");
-               }
-               else
-               {
-                       if (*parameters[0] == '?')
-                               parameters[0]++;
-                       strlcpy(search,parameters[0],MAXBUF);
-               }
-
-               for (char* n = search; *n; n++)
-                       *n = tolower(*n);
-
-               for (int i = 1; output != ""; i++)
-               {
-                       snprintf(a,MAXBUF,"line%d",i);
-                       output = helpop->ReadValue(search, a, 0);
-                       if (output != "")
-                       {
-                               src->WriteServ("290 "+std::string(src->nick)+" :"+output);
-                               nlines++;
-                       }
-               }
-               return (nlines>0);
+               syntax = "<any-text>";
        }
 
-       void sendtohelpop(userrec *src, int pcnt, const char **params)
+       CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE
        {
-               const char* first = params[0];
-               if (*first == '!')
+               const std::string& topic = parameters.empty() ? startkey : parameters[0];
+               HelpMap::const_iterator titer = help.find(topic);
+               if (titer == help.end())
                {
-                       first++;
+                       user->WriteNumeric(ERR_HELPNOTFOUND, topic, nohelp);
+                       return CMD_FAILURE;
                }
 
-               std::string line = "*** HELPOPS - From "+std::string(src->nick)+": "+std::string(first)+" ";
-               for (int i = 1; i < pcnt; i++)
-               {
-                       line = line + std::string(params[i]) + " ";
-               }
-               ServerInstance->WriteMode("oh",WM_AND,line.c_str());
+               user->WriteNumeric(RPL_HELPSTART, topic, InspIRCd::Format("*** Help for %s", topic.c_str()));
+               for (HelpMessage::const_iterator liter = titer->second.begin(); liter != titer->second.end(); ++liter)
+                       user->WriteNumeric(RPL_HELPTXT, topic, *liter);
+               user->WriteNumeric(RPL_ENDOFHELP, topic, "*** End of help");
+               return CMD_SUCCESS;
        }
 };
 
-/** Thrown by m_helpop
- */
-class HelpopException : public ModuleException
+class ModuleHelpop
+       : public Module
+       , public Whois::EventListener
 {
  private:
-       std::string err;
- public:
-       HelpopException(std::string message) : err(message) { }
-       virtual const char* GetReason() { return err.c_str(); }
-};
-
-class ModuleHelpop : public Module
-{
-       private:
-               ConfigReader *conf;
-               std::string  h_file;
-               cmd_helpop* mycommand;
-               Helpop* ho;
+               CommandHelpop cmd;
+               SimpleUserModeHandler ho;
 
        public:
-               ModuleHelpop(InspIRCd* Me)
-                       : Module::Module(Me)
+               ModuleHelpop()
+                       : Whois::EventListener(this)
+                       , cmd(this)
+                       , ho(this, "helpop", 'h', true)
                {
-                       ReadConfig();
-                       ho = new Helpop(ServerInstance);
-                       ServerInstance->AddMode(ho, 'h');
-                       mycommand = new cmd_helpop(ServerInstance);
-                       ServerInstance->AddCommand(mycommand);
                }
 
-               virtual void ReadConfig()
+               void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
                {
-                       conf = new ConfigReader(ServerInstance);
-                       h_file = conf->ReadValue("helpop", "file", 0);
+                       size_t longestkey = 0;
 
-                       if (h_file == "")
-                       {
-                               helpop = NULL;
-                               HelpopException e("Missing helpop file");
-                               throw(e);
-                       }
+                       HelpMap newhelp;
+                       ConfigTagList tags = ServerInstance->Config->ConfTags("helpop");
+                       if (tags.first == tags.second)
+                               throw ModuleException("You have loaded the helpop module but not configured any help topics!");
 
-                       helpop = new ConfigReader(ServerInstance, h_file);
-                       if ((helpop->ReadValue("nohelp",  "line1", 0) == "") ||
-                               (helpop->ReadValue("nohelpo", "line1", 0) == "") ||
-                               (helpop->ReadValue("start",   "line1", 0) == ""))
+                       for (ConfigIter i = tags.first; i != tags.second; ++i)
                        {
-                               HelpopException e("m_helpop: Helpop file is missing important entries. Please check the example conf.");
-                               throw(e);
+                               ConfigTag* tag = i->second;
+
+                               // Attempt to read the help key.
+                               const std::string key = tag->getString("key");
+                               if (key.empty())
+                                       throw ModuleException(InspIRCd::Format("<helpop:key> is empty at %s", tag->getTagLocation().c_str()));
+                               else if (irc::equals(key, "index"))
+                                       throw ModuleException(InspIRCd::Format("<helpop:key> is set to \"index\" which is reserved at %s", tag->getTagLocation().c_str()));
+                               else if (key.length() > longestkey)
+                                       longestkey = key.length();
+
+                               // Attempt to read the help value.
+                               std::string value;
+                               if (!tag->readString("value", value, true) || value.empty())
+                                       throw ModuleException(InspIRCd::Format("<helpop:value> is empty at %s", tag->getTagLocation().c_str()));
+
+                               // Parse the help body. Empty lines are replaced with a single
+                               // space because some clients are unable to show blank lines.
+                               HelpMessage helpmsg;
+                               irc::sepstream linestream(value, '\n', true);
+                               for (std::string line; linestream.GetToken(line); )
+                                       helpmsg.push_back(line.empty() ? " " : line);
+                               newhelp[key] = helpmsg;
                        }
-               }
 
-               void Implements(char* List)
-               {
-                       List[I_OnRehash] = List[I_OnWhois] = 1;
-               }
+                       // The number of items we can fit on a page.
+                       HelpMessage& indexmsg = newhelp["index"];
+                       size_t maxcolumns = 80 / (longestkey + 2);
+                       for (HelpMap::iterator iter = newhelp.begin(); iter != newhelp.end(); )
+                       {
+                               std::string indexline;
+                               for (size_t column = 0; column != maxcolumns; )
+                               {
+                                       if (iter == newhelp.end())
+                                               break;
 
-               virtual void OnRehash(const std::string &parameter)
-               {
-                       DELETE(conf);
-                       if (helpop)
-                               DELETE(helpop);
+                                       indexline.append(iter->first);
+                                       if (++column != maxcolumns)
+                                               indexline.append(longestkey - iter->first.length() + 2, ' ');
+                                       iter++;
+                               }
+                               indexmsg.push_back(indexline);
+                       }
+                       cmd.help.swap(newhelp);
 
-                       ReadConfig();
+                       ConfigTag* tag = ServerInstance->Config->ConfValue("helpmsg");
+                       cmd.nohelp = tag->getString("nohelp", "There is no help for the topic you searched for. Please try again.", 1);
                }
 
-               virtual void OnWhois(userrec* src, userrec* dst)
+               void OnWhois(Whois::Context& whois) CXX11_OVERRIDE
                {
-                       if (dst->IsModeSet('h'))
-                       {
-                               src->WriteServ("310 "+std::string(src->nick)+" "+std::string(dst->nick)+" :is available for help.");
-                       }
+                       if (whois.GetTarget()->IsModeSet(ho))
+                               whois.SendLine(RPL_WHOISHELPOP, "is available for help.");
                }
 
-               virtual ~ModuleHelpop()
-               {
-                       ServerInstance->Modes->DelMode(ho);
-                       DELETE(conf);
-                       DELETE(helpop);
-                       DELETE(ho);
-               }
-       
-               virtual Version GetVersion()
+               Version GetVersion() CXX11_OVERRIDE
                {
-                       return Version(1,0,0,1,VF_COMMON|VF_VENDOR,API_VERSION);
+                       return Version("Provides help to users via the HELPOP command", VF_VENDOR);
                }
 };
 
-class ModuleHelpopFactory : public ModuleFactory
-{
- public:
-       ModuleHelpopFactory()
-       {
-       }
-       
-       ~ModuleHelpopFactory()
-       {
-       }
-       
-       virtual Module * CreateModule(InspIRCd* Me)
-       {
-               return new ModuleHelpop(Me);
-       }
-       
-};
-
-extern "C" void * init_module( void )
-{
-       return new ModuleHelpopFactory;
-}
+MODULE_INIT(ModuleHelpop)