]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_helpop.cpp
Only assign NewServices once the duplicate check is done.
[user/henk/code/inspircd.git] / src / modules / m_helpop.cpp
index 3272b3580bfc870bc1ff0088aa97441a73c4c4c8..f1f26a5eeb9c40d7b95594bdfeaaa02bfee08f0d 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, 2017-2018, 2020 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2013, 2015 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2012 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 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2006 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 "helperfuncs.h"
-
-// Global Vars
-/* XXX - should all this be marked static? clear the global namespace, etc. */
-ConfigReader *helpop;
-Server *Srv;
-
-void handle_helpop(char**, int, userrec*);
-bool do_helpop(char**, int, userrec*);
-void sendtohelpop(userrec*, int, char**);
 
-/* $ModDesc: /helpop Command, Works like Unreal helpop */
+#include "inspircd.h"
+#include "modules/whois.h"
 
-class cmd_helpop : public command_t
+enum
 {
- public:
-        cmd_helpop () : command_t("HELPOP",0,0)
-        {
-                this->source = "m_helpop.so";
-        }
+       // From UnrealIRCd.
+       RPL_WHOISHELPOP = 310,
+
+       // From ircd-ratbox.
+       ERR_HELPNOTFOUND = 524,
+       RPL_HELPSTART = 704,
+       RPL_HELPTXT = 705,
+       RPL_ENDOFHELP = 706
+};
 
-       void Handle (char **parameters, int pcnt, userrec *user)
-       {
-               char a[MAXBUF];
-               std::string output = " ";
+typedef std::vector<std::string> HelpMessage;
 
-               if (!helpop)
-                       return;
+struct HelpTopic
+{
+       // The body of the help topic.
+       const HelpMessage body;
 
-               if (pcnt < 1)
-               {
-                       do_helpop(NULL,pcnt,user);
-                       return;
-               }
+       // The title of the help topic.
+       const std::string title;
 
-               if (parameters[0][0] == '!')
-               {
-                       // Force send to all +h users
-                       sendtohelpop(user, pcnt, parameters);
-               }
-               else if (parameters[0][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 != "")
-                                       {
-                                               Srv->SendTo(NULL,user,"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 != "")
-                                       {
-                                               Srv->SendTo(NULL,user,"290 "+std::string(user->nick)+" :"+output);
-                                       }
-                               }
-                               // Forward.
-                               sendtohelpop(user, pcnt, parameters);
-                       }
-               }
+       HelpTopic(const HelpMessage& Body, const std::string& Title)
+               : body(Body)
+               , title(Title)
+       {
        }
 };
 
+typedef std::map<std::string, HelpTopic, irc::insensitive_swo> HelpMap;
 
-bool do_helpop(char **parameters, int pcnt, userrec *src)
+class CommandHelpop : public Command
 {
-       char *search;
-       std::string output = " "; // a fix bought to you by brain :p
-       char a[MAXBUF];
-       char lower[MAXBUF];
-       int nlines = 0;
+ private:
+       const std::string startkey;
 
-       if (!parameters)
-       {
-               search = "start";
-       }
-       else
-       {
-               search = parameters[0];
-       }
+ public:
+       HelpMap help;
+       std::string nohelp;
 
-       if (search[0] == '?')
+       CommandHelpop(Module* Creator)
+               : Command(Creator, "HELPOP", 0)
+               , startkey("start")
        {
-               search++;
-       }
-
-       /* XXX - don't we have an strtolower()? if not, might pay to add one.. that works on char *, preferably.. */
-       strlcpy(lower, search, MAXBUF);
-       for (unsigned int t = 0; t < strlen(lower); t++)
-               lower[t] = tolower(lower[t]);
-
+               syntax = "<any-text>";
+       }
 
-       for (int i = 1; output != ""; i++)
+       CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE
        {
-               snprintf(a,MAXBUF,"line%d",i);
-               output = helpop->ReadValue(lower, a, 0);
-               if (output != "")
+               const std::string& topic = parameters.empty() ? startkey : parameters[0];
+               HelpMap::const_iterator titer = help.find(topic);
+               if (titer == help.end())
                {
-                       Srv->SendTo(NULL,src,"290 "+std::string(src->nick)+" :"+output);
-                       nlines++;
+                       user->WriteNumeric(ERR_HELPNOTFOUND, topic, nohelp);
+                       return CMD_FAILURE;
                }
-       }
-       return (nlines>0);
-}
-
-
 
-void sendtohelpop(userrec *src, int pcnt, char **params)
-{
-       char* first = params[0];
-       if (*first == '!')
-       {
-               first++;
+               const HelpTopic& entry = titer->second;
+               user->WriteNumeric(RPL_HELPSTART, topic, entry.title);
+               for (HelpMessage::const_iterator liter = entry.body.begin(); liter != entry.body.end(); ++liter)
+                       user->WriteNumeric(RPL_HELPTXT, topic, *liter);
+               user->WriteNumeric(RPL_ENDOFHELP, topic, "End of /HELPOP.");
+               return CMD_SUCCESS;
        }
-
-       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]) + " ";
-       }
-       Srv->SendToModeMask("oh",WM_AND,line);
-}
-
-class HelpopException
-{
- private:
-       std::string err;
- public:
-       HelpopException(std::string message) : err(message) { }
-       virtual char* GetReason() { return (char*)err.c_str(); }
 };
 
-class ModuleHelpop : public Module
+class ModuleHelpop
+       : public Module
+       , public Whois::EventListener
 {
-       private:
-               ConfigReader *conf;
-               std::string  h_file;
-               cmd_helpop* mycommand;
+ private:
+               CommandHelpop cmd;
+               SimpleUserModeHandler ho;
 
        public:
-               ModuleHelpop(Server* Me)
-                       : Module::Module(Me)
+               ModuleHelpop()
+                       : Whois::EventListener(this)
+                       , cmd(this)
+                       , ho(this, "helpop", 'h', true)
                {
-                       Srv  = Me;
-
-                       ReadConfig();
-                       if (!Srv->AddExtendedMode('h',MT_CLIENT,true,0,0))
-                       {
-                               Srv->Log(DEFAULT,"Unable to claim the +h usermode.");
-                               return;
-                       }
-
-                       mycommand = new cmd_helpop();
-                       Srv->AddCommand(mycommand);
                }
 
-               virtual void ReadConfig()
+               void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
                {
-                       conf = new ConfigReader;
-                       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(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);
+
+                               // Read the help title and store the topic.
+                               const std::string title = tag->getString("title", InspIRCd::Format("*** Help for %s", key.c_str()), 1);
+                               if (!newhelp.insert(std::make_pair(key, HelpTopic(helpmsg, title))).second)
+                               {
+                                       throw ModuleException(InspIRCd::Format("<helpop> tag with duplicate key '%s' at %s",
+                                               key.c_str(), tag->getTagLocation().c_str()));
+                               }
                        }
-               }
-
-               void Implements(char* List)
-               {
-                       List[I_OnRehash] = List[I_OnExtendedMode] = List[I_OnWhois] = 1;
-               }
-
-               virtual void OnRehash(std::string parameter)
-               {
-                       delete conf;
-                       if (helpop)
-                               delete helpop;
 
-                       ReadConfig();
-               }
+                       // The number of items we can fit on a page.
+                       HelpMessage indexmsg;
+                       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 int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
-               {
-                       if ((modechar == 'h') && (type == MT_CLIENT))
-                       {
-                               return 1;
+                                       indexline.append(iter->first);
+                                       if (++column != maxcolumns)
+                                               indexline.append(longestkey - iter->first.length() + 2, ' ');
+                                       iter++;
+                               }
+                               indexmsg.push_back(indexline);
                        }
-                       return 0;
-               }
+                       newhelp.insert(std::make_pair("index", HelpTopic(indexmsg, "List of help topics")));
+                       cmd.help.swap(newhelp);
 
-               virtual void OnWhois(userrec* src, userrec* dst)
-               {
-                       if (strchr(dst->modes,'h'))
-                       {
-                               Srv->SendTo(NULL,src,"310 "+std::string(src->nick)+" "+std::string(dst->nick)+" :is available for help.");
-                       }
+                       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 ~ModuleHelpop()
+               void OnWhois(Whois::Context& whois) CXX11_OVERRIDE
                {
-                       delete conf;
-                       delete helpop;
+                       if (whois.GetTarget()->IsModeSet(ho))
+                               whois.SendLine(RPL_WHOISHELPOP, "is available for help.");
                }
-       
-               virtual Version GetVersion()
+
+               Version GetVersion() CXX11_OVERRIDE
                {
-                       return Version(1,0,0,1,VF_STATIC|VF_VENDOR);
+                       return Version("Adds the /HELPOP command which allows users to view help on various topics and user mode h (helpop) which marks a server operator as being available for help.", VF_VENDOR);
                }
 };
 
-class ModuleHelpopFactory : public ModuleFactory
-{
- public:
-       ModuleHelpopFactory()
-       {
-       }
-       
-       ~ModuleHelpopFactory()
-       {
-       }
-       
-       virtual Module * CreateModule(Server* Me)
-       {
-               return new ModuleHelpop(Me);
-       }
-       
-};
-
-extern "C" void * init_module( void )
-{
-       return new ModuleHelpopFactory;
-}
+MODULE_INIT(ModuleHelpop)