]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_alias.cpp
Replace hardcoded mode letters, part 3
[user/henk/code/inspircd.git] / src / modules / m_alias.cpp
index e8fe736c4d0c02103e792c711496301135389d15..73e3bfd46e682b98dba17006cc74077df42a26ce 100644 (file)
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2005, 2009 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2004-2007, 2009 Craig Edwards <craigedwards@brainbox.cc>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
  *
- * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ * 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/>.
  */
 
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
-#include "inspircd.h"
-#include "wildcard.h"
-#include <vector>
 
-/* $ModDesc: Provides aliases of commands. */
+#include "inspircd.h"
 
 /** An alias definition
  */
-class Alias : public classbase
+class Alias
 {
  public:
        /** The text of the alias command */
-       irc::string text;
+       irc::string AliasedCommand;
+
        /** Text to replace with */
-       std::string replace_with;
+       std::string ReplaceFormat;
+
        /** Nickname required to perform alias */
-       std::string requires;
+       std::string RequiredNick;
+
        /** Alias requires ulined server */
-       bool uline;
+       bool ULineOnly;
+
        /** Requires oper? */
-       bool operonly;
+       bool OperOnly;
+
        /* is case sensitive params */
-       bool case_sensitive;
+       bool CaseSensitive;
+
+       /* whether or not it may be executed via fantasy (default OFF) */
+       bool ChannelCommand;
+
+       /* whether or not it may be executed via /command (default ON) */
+       bool UserCommand;
+
        /** Format that must be matched for use */
        std::string format;
 };
 
 class ModuleAlias : public Module
 {
- private:
-       /** We cant use a map, there may be multiple aliases with the same name */
-       std::vector<Alias> Aliases;
-       std::map<std::string, int> AliasMap;
-       std::vector<std::string> pars;
+       char fprefix;
+
+       /* We cant use a map, there may be multiple aliases with the same name.
+        * We can, however, use a fancy invention: the multimap. Maps a key to one or more values.
+        *              -- w00t
+     */
+       std::multimap<irc::string, Alias> Aliases;
 
-       virtual void ReadAliases()
+       /* whether or not +B users are allowed to use fantasy commands */
+       bool AllowBots;
+       UserModeReference botmode;
+
+       void ReadAliases()
        {
-               ConfigReader MyConf(ServerInstance);
+               ConfigTag* fantasy = ServerInstance->Config->ConfValue("fantasy");
+               AllowBots = fantasy->getBool("allowbots", false);
+               std::string fpre = fantasy->getString("prefix", "!");
+               fprefix = fpre.empty() ? '!' : fpre[0];
 
                Aliases.clear();
-               AliasMap.clear();
-               for (int i = 0; i < MyConf.Enumerate("alias"); i++)
+               ConfigTagList tags = ServerInstance->Config->ConfTags("alias");
+               for(ConfigIter i = tags.first; i != tags.second; ++i)
                {
+                       ConfigTag* tag = i->second;
                        Alias a;
-                       std::string txt;
-                       txt = MyConf.ReadValue("alias", "text", i);
-                       a.text = txt.c_str();
-                       a.replace_with = MyConf.ReadValue("alias", "replace", i, true);
-                       a.requires = MyConf.ReadValue("alias", "requires", i);
-                       a.uline = MyConf.ReadFlag("alias", "uline", i);
-                       a.operonly = MyConf.ReadFlag("alias", "operonly", i);
-                       a.format = MyConf.ReadValue("alias", "format", i);
-                       a.case_sensitive = MyConf.ReadFlag("alias", "matchcase", i);
-                       Aliases.push_back(a);
-                       AliasMap[txt] = 1;
+                       std::string aliastext = tag->getString("text");
+                       a.AliasedCommand = aliastext.c_str();
+                       tag->readString("replace", a.ReplaceFormat, true);
+                       a.RequiredNick = tag->getString("requires");
+                       a.ULineOnly = tag->getBool("uline");
+                       a.ChannelCommand = tag->getBool("channelcommand", false);
+                       a.UserCommand = tag->getBool("usercommand", true);
+                       a.OperOnly = tag->getBool("operonly");
+                       a.format = tag->getString("format");
+                       a.CaseSensitive = tag->getBool("matchcase");
+                       Aliases.insert(std::make_pair(a.AliasedCommand, a));
                }
        }
 
  public:
-       
-       ModuleAlias(InspIRCd* Me)
-               : Module::Module(Me)
+       ModuleAlias()
+               : botmode(this, "bot")
        {
-               ReadAliases();
-               pars.resize(127);
        }
 
-       void Implements(char* List)
-       {
-               List[I_OnPreCommand] = List[I_OnRehash] = 1;
-       }
-
-       virtual ~ModuleAlias()
+       void init() CXX11_OVERRIDE
        {
+               ReadAliases();
+               Implementation eventlist[] = { I_OnPreCommand, I_OnRehash, I_OnUserMessage };
+               ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
        }
 
-       virtual Version GetVersion()
+       Version GetVersion() CXX11_OVERRIDE
        {
-               return Version(1,1,0,1,VF_VENDOR,API_VERSION);
+               return Version("Provides aliases of commands.", VF_VENDOR);
        }
 
        std::string GetVar(std::string varname, const std::string &original_line)
@@ -102,52 +121,40 @@ class ModuleAlias : public Module
                int index = *(varname.begin()) - 48;
                varname.erase(varname.begin());
                bool everything_after = (varname == "-");
-               std::string word = "";
-
-               ServerInstance->Log(DEBUG,"Get var %d%s", index , everything_after ? " and all after it" : "");
+               std::string word;
 
                for (int j = 0; j < index; j++)
-                       word = ss.GetToken();
+                       ss.GetToken(word);
 
                if (everything_after)
                {
-                       std::string more = "*";
-                       while ((more = ss.GetToken()) != "")
+                       std::string more;
+                       while (ss.GetToken(more))
                        {
                                word.append(" ");
                                word.append(more);
                        }
                }
 
-               ServerInstance->Log(DEBUG,"Var is '%s'", word.c_str());
-
                return word;
        }
 
-       void SearchAndReplace(std::string& newline, const std::string &find, const std::string &replace)
+       ModResult OnPreCommand(std::string &command, std::vector<std::string> &parameters, LocalUser *user, bool validated, const std::string &original_line) CXX11_OVERRIDE
        {
-               std::string::size_type x = newline.find(find);
-               while (x != std::string::npos)
-               {
-                       newline.erase(x, find.length());
-                       newline.insert(x, replace);
-                       x = newline.find(find);
-               }
-       }
-
-       virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated, const std::string &original_line)
-       {
-               userrec *u = NULL;
+               std::multimap<irc::string, Alias>::iterator i, upperbound;
 
                /* If theyre not registered yet, we dont want
                 * to know.
                 */
                if (user->registered != REG_ALL)
-                       return 0;
+                       return MOD_RES_PASSTHRU;
 
-               /* We dont have any commands looking like this, dont bother with the loop */
-               if (AliasMap.find(command) == AliasMap.end())
-                       return 0;
+               /* We dont have any commands looking like this? Stop processing. */
+               i = Aliases.find(command.c_str());
+               if (i == Aliases.end())
+                       return MOD_RES_PASSTHRU;
+               /* Avoid iterating on to different aliases if no patterns match. */
+               upperbound = Aliases.upper_bound(command.c_str());
 
                irc::string c = command.c_str();
                /* The parameters for the command in their original form, with the command stripped off */
@@ -155,159 +162,226 @@ class ModuleAlias : public Module
                while (*(compare.c_str()) == ' ')
                        compare.erase(compare.begin());
 
-               std::string safe(original_line);
-
-               /* Escape out any $ symbols in the user provided text */
-
-               SearchAndReplace(safe, "$", "\r");
-
-               for (unsigned int i = 0; i < Aliases.size(); i++)
+               while (i != upperbound)
                {
-                       if (Aliases[i].text == c)
+                       if (i->second.UserCommand)
                        {
-                               /* Does it match the pattern? */
-                               if (!Aliases[i].format.empty())
+                               if (DoAlias(user, NULL, &(i->second), compare, original_line))
                                {
-                                       if (!match(Aliases[i].case_sensitive, compare.c_str(), Aliases[i].format.c_str()))
-                                               continue;
+                                       return MOD_RES_DENY;
                                }
+                       }
 
-                               if ((Aliases[i].operonly) && (!*user->oper))
-                                       return 0;
+                       i++;
+               }
 
-                               if (Aliases[i].requires != "")
-                               {
-                                       u = ServerInstance->FindNick(Aliases[i].requires);
-                                       if (!u)
-                                       {
-                                               user->WriteServ("401 "+std::string(user->nick)+" "+Aliases[i].requires+" :is currently unavailable. Please try again later.");
-                                               return 1;
-                                       }
-                               }
-                               if ((u != NULL) && (Aliases[i].requires != "") && (Aliases[i].uline))
-                               {
-                                       if (!ServerInstance->ULine(u->server))
-                                       {
-                                               ServerInstance->WriteOpers("*** NOTICE -- Service "+Aliases[i].requires+" required by alias "+std::string(Aliases[i].text.c_str())+" is not on a u-lined server, possibly underhanded antics detected!"); 
-                                               user->WriteServ("401 "+std::string(user->nick)+" "+Aliases[i].requires+" :is an imposter! Please inform an IRC operator as soon as possible.");
-                                               return 1;
-                                       }
-                               }
+               // If we made it here, no aliases actually matched.
+               return MOD_RES_PASSTHRU;
+       }
 
-                               /* Now, search and replace in a copy of the original_line, replacing $1 through $9 and $1- etc */
+       void OnUserMessage(User *user, void *dest, int target_type, const std::string &text, char status, const CUList &exempt_list, MessageType msgtype) CXX11_OVERRIDE
+       {
+               if ((target_type != TYPE_CHANNEL) || (msgtype != MSG_PRIVMSG))
+               {
+                       return;
+               }
 
-                               std::string::size_type crlf = Aliases[i].replace_with.find('\n');
+               // fcommands are only for local users. Spanningtree will send them back out as their original cmd.
+               if (!user || !IS_LOCAL(user))
+               {
+                       return;
+               }
 
-                               if (crlf == std::string::npos)
-                               {
-                                       ServerInstance->Log(DEBUG,"Single line alias: '%s'", Aliases[i].replace_with.c_str());
-                                       DoCommand(Aliases[i].replace_with, user, safe);
-                                       return 1;
-                               }
-                               else
-                               {
-                                       ServerInstance->Log(DEBUG,"Multi line alias: '%s'", Aliases[i].replace_with.c_str());
-                                       irc::sepstream commands(Aliases[i].replace_with, '\n');
-                                       std::string command = "*";
-                                       while ((command = commands.GetToken()) != "")
-                                       {
-                                               ServerInstance->Log(DEBUG,"Execute: '%s'", command.c_str());
-                                               DoCommand(command, user, safe);
-                                       }
-                                       return 1;
-                               }
-                       }
+               /* Stop here if the user is +B and allowbot is set to no. */
+               if (!AllowBots && user->IsModeSet(botmode))
+               {
+                       return;
                }
-               return 0;
-       }
 
-       void DoCommand(std::string newline, userrec* user, const std::string &original_line)
-       {
-               for (int v = 1; v < 10; v++)
+               Channel *c = (Channel *)dest;
+               std::string scommand;
+
+               // text is like "!moo cows bite me", we want "!moo" first
+               irc::spacesepstream ss(text);
+               ss.GetToken(scommand);
+               irc::string fcommand = scommand.c_str();
+
+               if (fcommand.empty())
                {
-                       std::string var = "$";
-                       var.append(ConvToStr(v));
-                       var.append("-");
-                       std::string::size_type x = newline.find(var);
+                       return; // wtfbbq
+               }
 
-                       while (x != std::string::npos)
-                       {
-                               newline.erase(x, var.length());
-                               newline.insert(x, GetVar(var, original_line));
-                               x = newline.find(var);
-                       }
+               // we don't want to touch non-fantasy stuff
+               if (*fcommand.c_str() != fprefix)
+               {
+                       return;
+               }
+
+               // nor do we give a shit about the prefix
+               fcommand.erase(fcommand.begin());
+
+               std::multimap<irc::string, Alias>::iterator i = Aliases.find(fcommand);
 
-                       var = "$";
-                       var.append(ConvToStr(v));
-                       x = newline.find(var);
+               if (i == Aliases.end())
+                       return;
 
-                       while (x != std::string::npos)
+               /* Avoid iterating on to other aliases if no patterns match */
+               std::multimap<irc::string, Alias>::iterator upperbound = Aliases.upper_bound(fcommand);
+
+
+               /* The parameters for the command in their original form, with the command stripped off */
+               std::string compare = text.substr(fcommand.length() + 1);
+               while (*(compare.c_str()) == ' ')
+                       compare.erase(compare.begin());
+
+               while (i != upperbound)
+               {
+                       if (i->second.ChannelCommand)
                        {
-                               newline.erase(x, var.length());
-                               newline.insert(x, GetVar(var, original_line));
-                               x = newline.find(var);
+                               // We use substr(1) here to remove the fantasy prefix
+                               if (DoAlias(user, c, &(i->second), compare, text.substr(1)))
+                                       return;
                        }
+
+                       i++;
                }
+       }
 
-               /* Special variables */
-               SearchAndReplace(newline, "$nick", user->nick);
-               SearchAndReplace(newline, "$ident", user->ident);
-               SearchAndReplace(newline, "$host", user->host);
-               SearchAndReplace(newline, "$vhost", user->dhost);
 
-               /* Unescape any variable names in the user text before sending */
-               SearchAndReplace(newline, "\r", "$");
+       int DoAlias(User *user, Channel *c, Alias *a, const std::string& compare, const std::string& safe)
+       {
+               User *u = NULL;
 
-               irc::tokenstream ss(newline);
-               const char* parv[127];
-               int x = 0;
+               /* Does it match the pattern? */
+               if (!a->format.empty())
+               {
+                       if (a->CaseSensitive)
+                       {
+                               if (!InspIRCd::Match(compare, a->format, rfc_case_sensitive_map))
+                                       return 0;
+                       }
+                       else
+                       {
+                               if (!InspIRCd::Match(compare, a->format))
+                                       return 0;
+                       }
+               }
+
+               if ((a->OperOnly) && (!user->IsOper()))
+                       return 0;
 
-               while ((pars[x] = ss.GetToken()) != "")
+               if (!a->RequiredNick.empty())
                {
-                       parv[x] = pars[x].c_str();
-                       ServerInstance->Log(DEBUG,"Parameter %d: %s", x, parv[x]);
-                       x++;
+                       u = ServerInstance->FindNick(a->RequiredNick);
+                       if (!u)
+                       {
+                               user->WriteNumeric(401, ""+user->nick+" "+a->RequiredNick+" :is currently unavailable. Please try again later.");
+                               return 1;
+                       }
+               }
+               if ((u != NULL) && (!a->RequiredNick.empty()) && (a->ULineOnly))
+               {
+                       if (!ServerInstance->ULine(u->server))
+                       {
+                               ServerInstance->SNO->WriteToSnoMask('a', "NOTICE -- Service "+a->RequiredNick+" required by alias "+std::string(a->AliasedCommand.c_str())+" is not on a u-lined server, possibly underhanded antics detected!");
+                               user->WriteNumeric(401, ""+user->nick+" "+a->RequiredNick+" :is an imposter! Please inform an IRC operator as soon as possible.");
+                               return 1;
+                       }
                }
 
-               ServerInstance->Log(DEBUG,"Call command handler on %s", parv[0]);
+               /* Now, search and replace in a copy of the original_line, replacing $1 through $9 and $1- etc */
 
-               if (ServerInstance->Parser->CallHandler(parv[0], &parv[1], x-1, user) == CMD_INVALID)
+               std::string::size_type crlf = a->ReplaceFormat.find('\n');
+
+               if (crlf == std::string::npos)
                {
-                       ServerInstance->Log(DEBUG,"Unknown command or not enough parameters");
+                       DoCommand(a->ReplaceFormat, user, c, safe);
+                       return 1;
                }
                else
                {
-                       ServerInstance->Log(DEBUG,"Command handler called successfully.");
+                       irc::sepstream commands(a->ReplaceFormat, '\n');
+                       std::string scommand;
+                       while (commands.GetToken(scommand))
+                       {
+                               DoCommand(scommand, user, c, safe);
+                       }
+                       return 1;
                }
        }
-       virtual void OnRehash(userrec* user, const std::string &parameter)
+
+       void DoCommand(const std::string& newline, User* user, Channel *chan, const std::string &original_line)
        {
-               ReadAliases();
-       }
-};
+               std::string result;
+               result.reserve(newline.length());
+               for (unsigned int i = 0; i < newline.length(); i++)
+               {
+                       char c = newline[i];
+                       if (c == '$')
+                       {
+                               if (isdigit(newline[i+1]))
+                               {
+                                       int len = (newline[i+2] == '-') ? 3 : 2;
+                                       std::string var = newline.substr(i, len);
+                                       result.append(GetVar(var, original_line));
+                                       i += len - 1;
+                               }
+                               else if (newline.substr(i, 5) == "$nick")
+                               {
+                                       result.append(user->nick);
+                                       i += 4;
+                               }
+                               else if (newline.substr(i, 5) == "$host")
+                               {
+                                       result.append(user->host);
+                                       i += 4;
+                               }
+                               else if (newline.substr(i, 5) == "$chan")
+                               {
+                                       if (chan)
+                                               result.append(chan->name);
+                                       i += 4;
+                               }
+                               else if (newline.substr(i, 6) == "$ident")
+                               {
+                                       result.append(user->ident);
+                                       i += 5;
+                               }
+                               else if (newline.substr(i, 6) == "$vhost")
+                               {
+                                       result.append(user->dhost);
+                                       i += 5;
+                               }
+                               else
+                                       result.push_back(c);
+                       }
+                       else
+                               result.push_back(c);
+               }
 
+               irc::tokenstream ss(result);
+               std::vector<std::string> pars;
+               std::string command, token;
 
-class ModuleAliasFactory : public ModuleFactory
-{
- public:
-       ModuleAliasFactory()
-       {
+               ss.GetToken(command);
+               while (ss.GetToken(token))
+               {
+                       pars.push_back(token);
+               }
+               ServerInstance->Parser->CallHandler(command, pars, user);
        }
 
-       ~ModuleAliasFactory()
+       void OnRehash(User* user) CXX11_OVERRIDE
        {
-       }
+               ReadAliases();
+       }
 
-               virtual Module * CreateModule(InspIRCd* Me)
+       void Prioritize()
        {
-               return new ModuleAlias(Me);
+               // Prioritise after spanningtree so that channel aliases show the alias before the effects.
+               Module* linkmod = ServerInstance->Modules->Find("m_spanningtree.so");
+               ServerInstance->Modules->SetPriority(this, I_OnUserMessage, PRIORITY_AFTER, &linkmod);
        }
 };
 
-
-extern "C" void * init_module( void )
-{
-       return new ModuleAliasFactory;
-}
-
+MODULE_INIT(ModuleAlias)