]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/helperfuncs.cpp
Fail a SANICK if the target nickname already exists.
[user/henk/code/inspircd.git] / src / helperfuncs.cpp
index cfb96cca2e953668528dbb1cb8241904f616f0f0..f8ee0d1a65f568d5ddc9629be5a0366b51817bee 100644 (file)
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
- *                       E-mail:
- *                <brain@chatspike.net>
- *                <Craig@chatspike.net>
+ *   Copyright (C) 2019-2020 Matt Schatz <genius3000@g3k.solutions>
+ *   Copyright (C) 2018 linuxdaemon <linuxdaemon.irc@gmail.com>
+ *   Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
+ *   Copyright (C) 2013 Adam <Adam@anope.org>
+ *   Copyright (C) 2012-2015 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2012-2014, 2017-2018, 2020 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012, 2018 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2012 ChrisTX <xpipe@hotmail.de>
+ *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2007, 2010 Craig Edwards <brain@inspircd.org>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2006-2008 Robin Burchell <robin+git@viroteck.net>
  *
- * Written by Craig Edwards, Craig McLure, and others.
- * 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/>.
  */
 
-using namespace std;
 
-#include "inspircd_config.h"
-#include "inspircd.h"
-#include "inspircd_io.h"
-#include "inspircd_util.h"
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/errno.h>
-#include <time.h>
-#include <string>
-#ifdef GCC3
-#include <ext/hash_map>
-#else
-#include <hash_map>
+#ifdef _WIN32
+#define _CRT_RAND_S
+#include <stdlib.h>
 #endif
-#include <sstream>
-#include <vector>
-#include <deque>
-#include <stdarg.h>
-#include "connection.h"
-#include "users.h"
-#include "ctables.h"
-#include "globals.h"
-#include "modules.h"
-#include "dynamic.h"
-#include "wildcard.h"
-#include "message.h"
-#include "mode.h"
-#include "xline.h"
-#include "commands.h"
-#include "inspstring.h"
-#include "helperfuncs.h"
-#include "hashcomp.h"
-
-extern int MODCOUNT;
-extern std::vector<Module*> modules;
-
-extern time_t TIME;
-extern bool nofork;
-extern char lowermap[255];
-extern char ServerName[MAXBUF];
-extern char Network[MAXBUF];
-extern char ServerDesc[MAXBUF];
-extern char list[MAXBUF];
-
-extern int debugging;
-extern int LogLevel;
-
-extern std::stringstream config_f;
-
 
+#include "inspircd.h"
+#include "xline.h"
+#include "exitcodes.h"
+#include <iostream>
 
-extern FILE *log_file;
-extern userrec* fd_ref_table[65536];
-
-extern int statsAccept, statsRefused, statsUnknown, statsCollisions, statsDns, statsDnsGood, statsDnsBad, statsConnects, statsSent, statsRecv;
-
-static char already_sent[65536];
-extern std::vector<userrec*> all_opers;
-
-extern ClassVector Classes;
-
-typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
-typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
-typedef std::deque<command_t> command_table;
-
-extern user_hash clientlist;
-extern chan_hash chanlist;
-extern command_table cmdlist;
-extern file_cache MOTD;
-extern file_cache RULES;
-
-void log(int level,char *text, ...)
-{
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        time_t rawtime;
-        struct tm * timeinfo;
-        if (level < LogLevel)
-                return;
-
-        time(&rawtime);
-        timeinfo = localtime (&rawtime);
-
-        if (log_file)
-        {
-                char b[MAXBUF];
-                va_start (argsPtr, text);
-                vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-                va_end(argsPtr);
-                strlcpy(b,asctime(timeinfo),MAXBUF);
-                b[24] = ':';    // we know this is the end of the time string
-                fprintf(log_file,"%s %s\n",b,textbuffer);
-                if (nofork)
-                {
-                        // nofork enabled? display it on terminal too
-                        printf("%s %s\n",b,textbuffer);
-                }
-        }
-}
-
-void readfile(file_cache &F, const char* fname)
+/* Find a user record by nickname and return a pointer to it */
+User* InspIRCd::FindNick(const std::string &nick)
 {
-        FILE* file;
-        char linebuf[MAXBUF];
-
-        log(DEBUG,"readfile: loading %s",fname);
-        F.clear();
-        file =  fopen(fname,"r");
-        if (file)
-        {
-                while (!feof(file))
-                {
-                        fgets(linebuf,sizeof(linebuf),file);
-                        linebuf[strlen(linebuf)-1]='\0';
-                        if (linebuf[0] == 0)
-                        {
-                                strcpy(linebuf,"  ");
-                        }
-                        if (!feof(file))
-                        {
-                                F.push_back(linebuf);
-                        }
-                }
-                fclose(file);
-        }
-        else
-        {
-                log(DEBUG,"readfile: failed to load file: %s",fname);
-        }
-        log(DEBUG,"readfile: loaded %s, %lu lines",fname,(unsigned long)F.size());
+       if (!nick.empty() && isdigit(*nick.begin()))
+               return FindUUID(nick);
+       return FindNickOnly(nick);
 }
 
-void Write(int sock,char *text, ...)
+User* InspIRCd::FindNickOnly(const std::string &nick)
 {
-        if (sock < 0)
-                return;
-        if (!text)
-        {
-                log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
-                return;
-        }
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        char tb[MAXBUF];
-
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-        int bytes = snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
-        chop(tb);
-        if (fd_ref_table[sock])
-        {
-                int MOD_RESULT = 0;
-                FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
-                fd_ref_table[sock]->AddWriteBuf(tb);
-                statsSent += bytes;
-        }
-        else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
-}
+       user_hash::iterator iter = this->Users->clientlist.find(nick);
 
-/* write a server formatted numeric response to a single socket */
+       if (iter == this->Users->clientlist.end())
+               return NULL;
 
-void WriteServ(int sock, char* text, ...)
-{
-        if (sock < 0)
-                return;
-        if (!text)
-        {
-                log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
-                return;
-        }
-        char textbuffer[MAXBUF],tb[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-        int bytes = snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
-        chop(tb);
-        if (fd_ref_table[sock])
-        {
-                int MOD_RESULT = 0;
-                FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
-                fd_ref_table[sock]->AddWriteBuf(tb);
-                statsSent += bytes;
-        }
-        else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
+       return iter->second;
 }
 
-/* write text from an originating user to originating user */
-
-void WriteFrom(int sock, userrec *user,char* text, ...)
+User *InspIRCd::FindUUID(const std::string &uid)
 {
-        if (sock < 0)
-                return;
-        if ((!text) || (!user))
-        {
-                log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
-                return;
-        }
-        char textbuffer[MAXBUF],tb[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-        int bytes = snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
-        chop(tb);
-        if (fd_ref_table[sock])
-        {
-                int MOD_RESULT = 0;
-                FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
-                fd_ref_table[sock]->AddWriteBuf(tb);
-                statsSent += bytes;
-        }
-        else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
-}
+       user_hash::iterator finduuid = this->Users->uuidlist.find(uid);
 
-/* write text to an destination user from a source user (e.g. user privmsg) */
+       if (finduuid == this->Users->uuidlist.end())
+               return NULL;
 
-void WriteTo(userrec *source, userrec *dest,char *data, ...)
-{
-        if ((!dest) || (!data))
-        {
-                log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
-                return;
-        }
-        if (dest->fd == FD_MAGIC_NUMBER)
-                return;
-        char textbuffer[MAXBUF],tb[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, data);
-        vsnprintf(textbuffer, MAXBUF, data, argsPtr);
-        va_end(argsPtr);
-        chop(tb);
-
-        // if no source given send it from the server.
-        if (!source)
-        {
-                WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
-        }
-        else
-        {
-                WriteFrom(dest->fd,source,"%s",textbuffer);
-        }
+       return finduuid->second;
 }
+/* find a channel record by channel name and return a pointer to it */
 
-/* write formatted text from a source user to all users on a channel
- * including the sender (NOT for privmsg, notice etc!) */
-
-void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
+Channel* InspIRCd::FindChan(const std::string &chan)
 {
-        if ((!Ptr) || (!user) || (!text))
-        {
-                log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
-                return;
-        }
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-        std::vector<char*> *ulist = Ptr->GetUsers();
-        for (unsigned int j = 0; j < ulist->size(); j++)
-        {
-                char* o = (*ulist)[j];
-                userrec* otheruser = (userrec*)o;
-                if (otheruser->fd != FD_MAGIC_NUMBER)
-                        WriteTo(user,otheruser,"%s",textbuffer);
-        }
-}
-
-/* write formatted text from a source user to all users on a channel
- * including the sender (NOT for privmsg, notice etc!) doesnt send to
- * users on remote servers */
+       chan_hash::iterator iter = chanlist.find(chan);
 
-void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
-{
-        if ((!Ptr) || (!text))
-        {
-                log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
-                return;
-        }
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-        std::vector<char*> *ulist = Ptr->GetUsers();
-        for (unsigned int j = 0; j < ulist->size(); j++)
-        {
-                char* o = (*ulist)[j];
-                userrec* otheruser = (userrec*)o;
-                if ((otheruser->fd != FD_MAGIC_NUMBER) && (otheruser->fd != -1) && (otheruser != user))
-                {
-                        if (!user)
-                        {
-                                WriteServ(otheruser->fd,"%s",textbuffer);
-                        }
-                        else
-                        {
-                                WriteTo(user,otheruser,"%s",textbuffer);
-                        }
-                }
-        }
-}
+       if (iter == chanlist.end())
+               /* Couldn't find it */
+               return NULL;
 
-void WriteChannelWithServ(char* ServName, chanrec* Ptr, char* text, ...)
-{
-        if ((!Ptr) || (!text))
-        {
-                log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
-                return;
-        }
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-
-        std::vector<char*> *ulist = Ptr->GetUsers();
-        for (unsigned int j = 0; j < ulist->size(); j++)
-        {
-                char* o = (*ulist)[j];
-                userrec* otheruser = (userrec*)o;
-                if (otheruser->fd != FD_MAGIC_NUMBER)
-                        WriteServ(otheruser->fd,"%s",textbuffer);
-        }
+       return iter->second;
 }
 
-/* write formatted text from a source user to all users on a channel except
- * for the sender (for privmsg etc) */
-
-void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
+bool InspIRCd::IsValidMask(const std::string &mask)
 {
-        if ((!Ptr) || (!user) || (!text))
-        {
-                log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
-                return;
-        }
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-        std::vector<char*> *ulist = Ptr->GetUsers();
-        for (unsigned int j = 0; j < ulist->size(); j++)
-        {
-                char* o = (*ulist)[j];
-                userrec* otheruser = (userrec*)o;
-                if ((otheruser->fd != FD_MAGIC_NUMBER) && (user != otheruser))
-                        WriteFrom(otheruser->fd,user,"%s",textbuffer);
-        }
-}
+       const char* dest = mask.c_str();
+       int exclamation = 0;
+       int atsign = 0;
 
-std::string GetServerDescription(char* servername)
-{
-       std::string description = "";
-       FOREACH_MOD OnGetServerDescription(servername,description);
-       if (description != "")
+       for (const char* i = dest; *i; i++)
        {
-               return description;
+               /* out of range character, bad mask */
+               if (*i < 32 || *i > 126)
+               {
+                       return false;
+               }
+
+               switch (*i)
+               {
+                       case '!':
+                               exclamation++;
+                               break;
+                       case '@':
+                               atsign++;
+                               break;
+               }
        }
-       else
-       {
-               return ServerDesc; // not a remote server that can be found, it must be me.
-       }
-}
 
-/* write a formatted string to all users who share at least one common
- * channel, including the source user e.g. for use in NICK */
+       /* valid masks only have 1 ! and @ */
+       if (exclamation != 1 || atsign != 1)
+               return false;
 
-void WriteCommon(userrec *u, char* text, ...)
-{
-        if (!u)
-        {
-                log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
-                return;
-        }
-
-        if (u->registered != 7) {
-                log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
-                return;
-        }
-
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-        // FIX: Stops a message going to the same person more than once
-        memset(&already_sent,0,65536);
-
-        bool sent_to_at_least_one = false;
-
-        for (int i = 0; i < MAXCHANS; i++)
-        {
-                if (u->chans[i].channel)
-                {
-                        std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
-                        for (unsigned int j = 0; j < ulist->size(); j++)
-                        {
-                                char* o = (*ulist)[j];
-                                userrec* otheruser = (userrec*)o;
-                                if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
-                                {
-                                        already_sent[otheruser->fd] = 1;
-                                        WriteFrom(otheruser->fd,u,"%s",textbuffer);
-                                        sent_to_at_least_one = true;
-                                }
-                        }
-                }
-        }
-        // if the user was not in any channels, no users will receive the text. Make sure the user
-        // receives their OWN message for WriteCommon
-        if (!sent_to_at_least_one)
-        {
-                WriteFrom(u->fd,u,"%s",textbuffer);
-        }
-}
+       if (mask.length() > ServerInstance->Config->Limits.GetMaxMask())
+               return false;
 
-/* write a formatted string to all users who share at least one common
- * channel, NOT including the source user e.g. for use in QUIT */
-
-void WriteCommonExcept(userrec *u, char* text, ...)
-{
-        if (!u)
-        {
-                log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
-                return;
-        }
-
-        if (u->registered != 7) {
-                log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
-                return;
-        }
-
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-        memset(&already_sent,0,65536);
-
-        for (int i = 0; i < MAXCHANS; i++)
-        {
-                if (u->chans[i].channel)
-                {
-                        std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
-                        for (unsigned int j = 0; j < ulist->size(); j++)
-                        {
-                                char* o = (*ulist)[j];
-                                userrec* otheruser = (userrec*)o;
-                                if (u != otheruser)
-                                {
-                                        if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
-                                        {
-                                                already_sent[otheruser->fd] = 1;
-                                                WriteFrom(otheruser->fd,u,"%s",textbuffer);
-                                        }
-                                }
-                        }
-                }
-        }
+       return true;
 }
 
-void WriteOpers(char* text, ...)
+void InspIRCd::StripColor(std::string &sentence)
 {
-        if (!text)
-        {
-                log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
-                return;
-        }
-
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-        for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
-        {
-                userrec* a = *i;
-                if ((a) && (a->fd != FD_MAGIC_NUMBER))
-                {
-                        if (strchr(a->modes,'s'))
-                        {
-                                // send server notices to all with +s
-                                WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
-                        }
-                }
-        }
-}
-
-void NoticeAllOpers(userrec *source, bool local_only, char* text, ...)
-{
-        if ((!text) || (!source))
-        {
-                log(DEFAULT,"*** BUG *** NoticeAllOpers was given an invalid parameter");
-                return;
-        }
-
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-        for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
-        {
-                userrec* a = *i;
-                if ((a) && (a->fd != FD_MAGIC_NUMBER))
-                {
-                        if (strchr(a->modes,'s'))
-                        {
-                                // send server notices to all with +s
-                                WriteServ(a->fd,"NOTICE %s :*** Notice From %s: %s",a->nick,source->nick,textbuffer);
-                        }
-                }
-        }
+       /* refactor this completely due to SQUIT bug since the old code would strip last char and replace with \0 --peavey */
+       int seq = 0;
 
+       for (std::string::iterator i = sentence.begin(); i != sentence.end();)
+       {
+               if (*i == 3)
+                       seq = 1;
+               else if (seq && (( ((*i >= '0') && (*i <= '9')) || (*i == ',') ) ))
+               {
+                       seq++;
+                       if ( (seq <= 4) && (*i == ',') )
+                               seq = 1;
+                       else if (seq > 3)
+                               seq = 0;
+               }
+               else
+                       seq = 0;
+
+               // Strip all control codes too except \001 for CTCP
+               if (seq || ((*i >= 0) && (*i < 32) && (*i != 1)))
+                       i = sentence.erase(i);
+               else
+                       ++i;
+       }
 }
-// returns TRUE of any users on channel C occupy server 'servername'.
 
-bool ChanAnyOnThisServer(chanrec *c,char* servername)
+void InspIRCd::ProcessColors(file_cache& input)
 {
-        log(DEBUG,"ChanAnyOnThisServer");
-
-        std::vector<char*> *ulist = c->GetUsers();
-        for (unsigned int j = 0; j < ulist->size(); j++)
-        {
-                char* o = (*ulist)[j];
-                userrec* user = (userrec*)o;
-                if (!strcasecmp(user->server,servername))
-                        return true;
-        }
-        return false;
+       /*
+        * Replace all color codes from the special[] array to actual
+        * color code chars using C++ style escape sequences. You
+        * can append other chars to replace if you like -- Justasic
+        */
+       static struct special_chars
+       {
+               std::string character;
+               std::string replace;
+               special_chars(const std::string& c, const std::string& r)
+                       : character(c)
+                       , replace(r)
+               {
+               }
+       } special[] = {
+               special_chars("\\b", "\x02"), // Bold
+               special_chars("\\c", "\x03"), // Color
+               special_chars("\\i", "\x1D"), // Italic
+               special_chars("\\m", "\x11"), // Monospace
+               special_chars("\\r", "\x16"), // Reverse
+               special_chars("\\s", "\x1E"), // Strikethrough
+               special_chars("\\u", "\x1F"), // Underline
+               special_chars("\\x", "\x0F"), // Reset
+               special_chars("", "")
+       };
+
+       for(file_cache::iterator it = input.begin(), it_end = input.end(); it != it_end; it++)
+       {
+               std::string ret = *it;
+               for(int i = 0; special[i].character.empty() == false; ++i)
+               {
+                       std::string::size_type pos = ret.find(special[i].character);
+                       if(pos == std::string::npos) // Couldn't find the character, skip this line
+                               continue;
+
+                       if((pos > 0) && (ret[pos-1] == '\\') && (ret[pos] == '\\'))
+                               continue; // Skip double slashes.
+
+                       // Replace all our characters in the array
+                       while(pos != std::string::npos)
+                       {
+                               ret = ret.substr(0, pos) + special[i].replace + ret.substr(pos + special[i].character.size());
+                               pos = ret.find(special[i].character, pos + special[i].replace.size());
+                       }
+               }
+
+               // Replace double slashes with a single slash before we return
+               std::string::size_type pos = ret.find("\\\\");
+               while(pos != std::string::npos)
+               {
+                       ret = ret.substr(0, pos) + "\\" + ret.substr(pos + 2);
+                       pos = ret.find("\\\\", pos + 1);
+               }
+               *it = ret;
+       }
 }
 
-// returns true if user 'u' shares any common channels with any users on server 'servername'
-
-bool CommonOnThisServer(userrec* u,const char* servername)
+/* true for valid channel name, false else */
+bool InspIRCd::DefaultIsChannel(const std::string& chname)
 {
-        log(DEBUG,"ChanAnyOnThisServer");
-
-        for (int i = 0; i < MAXCHANS; i++)
-        {
-                if (u->chans[i].channel)
-                {
-                        std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
-                        for (unsigned int j = 0; j < ulist->size(); j++)
-                        {
-                                char* o = (*ulist)[j];
-                                userrec* user = (userrec*)o;
-                                if (!strcasecmp(user->server,servername))
-                                        return true;
-                        }
-                }
-        }
-        return false;
-}
+       if (chname.empty() || chname.length() > ServerInstance->Config->Limits.ChanMax)
+               return false;
 
+       if (chname[0] != '#')
+               return false;
 
-void WriteMode(const char* modes, int flags, const char* text, ...)
-{
-        if ((!text) || (!modes) || (!flags))
-        {
-                log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
-                return;
-        }
-
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-        int modelen = strlen(modes);
-
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
-                {
-                        bool send_to_user = false;
-
-                        if (flags == WM_AND)
-                        {
-                                send_to_user = true;
-                                for (int n = 0; n < modelen; n++)
-                                {
-                                        if (!hasumode(i->second,modes[n]))
-                                        {
-                                                send_to_user = false;
-                                                break;
-                                        }
-                                }
-                        }
-                        else if (flags == WM_OR)
-                        {
-                                send_to_user = false;
-                                for (int n = 0; n < modelen; n++)
-                                {
-                                        if (hasumode(i->second,modes[n]))
-                                        {
-                                                send_to_user = true;
-                                                break;
-                                        }
-                                }
-                        }
-
-                        if (send_to_user)
-                        {
-                                WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
-                        }
-                }
-        }
+       for (std::string::const_iterator i = chname.begin()+1; i != chname.end(); ++i)
+       {
+               switch (*i)
+               {
+                       case ' ':
+                       case ',':
+                       case 7:
+                               return false;
+               }
+       }
+
+       return true;
 }
 
-void NoticeAll(userrec *source, bool local_only, char* text, ...)
+/* true for valid nickname, false else */
+bool InspIRCd::DefaultIsNick(const std::string& n)
 {
-        if ((!text) || (!source))
-        {
-                log(DEFAULT,"*** BUG *** NoticeAll was given an invalid parameter");
-                return;
-        }
-
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
-                {
-                        WriteFrom(i->second->fd,source,"NOTICE $* :%s",textbuffer);
-                }
-        }
-
-}
+       if (n.empty() || n.length() > ServerInstance->Config->Limits.NickMax)
+               return false;
 
+       for (std::string::const_iterator i = n.begin(); i != n.end(); ++i)
+       {
+               if ((*i >= 'A') && (*i <= '}'))
+               {
+                       /* "A"-"}" can occur anywhere in a nickname */
+                       continue;
+               }
+
+               if ((((*i >= '0') && (*i <= '9')) || (*i == '-')) && (i != n.begin()))
+               {
+                       /* "0"-"9", "-" can occur anywhere BUT the first char of a nickname */
+                       continue;
+               }
+
+               /* invalid character! abort */
+               return false;
+       }
 
-void WriteWallOps(userrec *source, bool local_only, char* text, ...)
-{
-        if ((!text) || (!source))
-        {
-                log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
-                return;
-        }
-
-        char textbuffer[MAXBUF];
-        va_list argsPtr;
-        va_start (argsPtr, text);
-        vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-        va_end(argsPtr);
-
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
-                {
-                        if (strchr(i->second->modes,'w'))
-                        {
-                                WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
-                        }
-                }
-        }
+       return true;
 }
 
-/* convert a string to lowercase. Note following special circumstances
- * taken from RFC 1459. Many "official" server branches still hold to this
- * rule so i will too;
- *
- *  Because of IRC's scandanavian origin, the characters {}| are
- *  considered to be the lower case equivalents of the characters []\,
- *  respectively. This is a critical issue when determining the
- *  equivalence of two nicknames.
- */
-
-void strlower(char *n)
+/* return true for good ident, false else */
+bool InspIRCd::DefaultIsIdent(const std::string& n)
 {
-        if (n)
-        {
-                for (char* t = n; *t; t++)
-                        *t = lowermap[(unsigned)*t];
-        }
-}
+       if (n.empty())
+               return false;
 
-/* Find a user record by nickname and return a pointer to it */
+       for (std::string::const_iterator i = n.begin(); i != n.end(); ++i)
+       {
+               if ((*i >= 'A') && (*i <= '}'))
+               {
+                       continue;
+               }
 
-userrec* Find(std::string nick)
-{
-        user_hash::iterator iter = clientlist.find(nick);
+               if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
+               {
+                       continue;
+               }
 
-        if (iter == clientlist.end())
-                /* Couldn't find it */
-                return NULL;
+               return false;
+       }
 
-        return iter->second;
+       return true;
 }
 
-/* find a channel record by channel name and return a pointer to it */
-
-chanrec* FindChan(const char* chan)
+bool InspIRCd::IsHost(const std::string& host)
 {
-        if (!chan)
-        {
-                log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
-                return NULL;
-        }
+       // Hostnames must be non-empty and shorter than the maximum hostname length.
+       if (host.empty() || host.length() > ServerInstance->Config->Limits.MaxHost)
+               return false;
 
-        chan_hash::iterator iter = chanlist.find(chan);
+       unsigned int numdashes = 0;
+       unsigned int numdots = 0;
+       bool seendot = false;
+       const std::string::const_iterator hostend = host.end() - 1;
+       for (std::string::const_iterator iter = host.begin(); iter != host.end(); ++iter)
+       {
+               unsigned char chr = static_cast<unsigned char>(*iter);
 
-        if (iter == chanlist.end())
-                /* Couldn't find it */
-                return NULL;
+               // If the current character is a label separator.
+               if (chr == '.')
+               {
+                       numdots++;
 
-        return iter->second;
-}
+                       // Consecutive separators are not allowed and dashes can not exist at the start or end
+                       // of labels and separators must only exist between labels.
+                       if (seendot || numdashes || iter == host.begin() || iter == hostend)
+                               return false;
 
+                       seendot = true;
+                       continue;
+               }
 
-long GetMaxBans(char* name)
-{
-        char CM[MAXBUF];
-        for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
-        {
-                ConfValue("banlist","chan",count,CM,&config_f);
-                if (match(name,CM))
-                {
-                        ConfValue("banlist","limit",count,CM,&config_f);
-                        return atoi(CM);
-                }
-        }
-        return 64;
-}
+               // If this point is reached then the character is not a dot.
+               seendot = false;
 
-void purge_empty_chans(userrec* u)
-{
-
-        int go_again = 1, purge = 0;
-
-        // firstly decrement the count on each channel
-        for (int f = 0; f < MAXCHANS; f++)
-        {
-                if (u->chans[f].channel)
-                {
-                        u->chans[f].channel->DelUser((char*)u);
-                }
-        }
-
-        for (int i = 0; i < MAXCHANS; i++)
-        {
-                if (u->chans[i].channel)
-                {
-                        if (!usercount(u->chans[i].channel))
-                        {
-                                chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
-                                /* kill the record */
-                                if (i2 != chanlist.end())
-                                {
-                                        log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
-                                        if (i2->second)
-                                                delete i2->second;
-                                        chanlist.erase(i2);
-                                        go_again = 1;
-                                        purge++;
-                                        u->chans[i].channel = NULL;
-                                }
-                        }
-                        else
-                        {
-                                log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
-                        }
-                }
-        }
-        log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
-
-        DeleteOper(u);
-}
+               // If the current character is a dash.
+               if (chr == '-')
+               {
+                       // Consecutive separators are not allowed and dashes can not exist at the start or end
+                       // of labels and separators must only exist between labels.
+                       if (seendot || numdashes >= 2 || iter == host.begin() || iter == hostend)
+                               return false;
 
+                       numdashes += 1;
+                       continue;
+               }
 
-char scratch[MAXBUF];
-char sparam[MAXBUF];
-
-char* chanmodes(chanrec *chan)
-{
-        if (!chan)
-        {
-                log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
-                strcpy(scratch,"");
-                return scratch;
-        }
-
-        strcpy(scratch,"");
-        strcpy(sparam,"");
-        if (chan->binarymodes & CM_NOEXTERNAL)
-        {
-                strlcat(scratch,"n",MAXMODES);
-        }
-        if (chan->binarymodes & CM_TOPICLOCK)
-        {
-                strlcat(scratch,"t",MAXMODES);
-        }
-        if (chan->key[0])
-        {
-                strlcat(scratch,"k",MAXMODES);
-        }
-        if (chan->limit)
-        {
-                strlcat(scratch,"l",MAXMODES);
-        }
-        if (chan->binarymodes & CM_INVITEONLY)
-        {
-                strlcat(scratch,"i",MAXMODES);
-        }
-        if (chan->binarymodes & CM_MODERATED)
-        {
-                strlcat(scratch,"m",MAXMODES);
-        }
-        if (chan->binarymodes & CM_SECRET)
-        {
-                strlcat(scratch,"s",MAXMODES);
-        }
-        if (chan->binarymodes & CM_PRIVATE)
-        {
-                strlcat(scratch,"p",MAXMODES);
-        }
-        if (chan->key[0])
-        {
-                strlcat(sparam," ",MAXBUF);
-                strlcat(sparam,chan->key,MAXBUF);
-        }
-        if (chan->limit)
-        {
-                char foo[24];
-                sprintf(foo," %lu",(unsigned long)chan->limit);
-                strlcat(sparam,foo,MAXBUF);
-        }
-        if (*chan->custom_modes)
-        {
-                strlcat(scratch,chan->custom_modes,MAXMODES);
-                for (int z = 0; chan->custom_modes[z] != 0; z++)
-                {
-                        std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
-                        if (extparam != "")
-                        {
-                                strlcat(sparam," ",MAXBUF);
-                                strlcat(sparam,extparam.c_str(),MAXBUF);
-                        }
-                }
-        }
-        log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
-        strlcat(scratch,sparam,MAXMODES);
-        return scratch;
-}
+               // If this point is reached then the character is not a dash.
+               numdashes = 0;
 
+               // Alphanumeric characters are allowed at any position.
+               if ((chr >= '0' && chr <= '9') || (chr >= 'A' && chr <= 'Z') || (chr >= 'a' && chr <= 'z'))
+                       continue;
 
-/* compile a userlist of a channel into a string, each nick seperated by
- * spaces and op, voice etc status shown as @ and + */
+               return false;
+       }
 
-void userlist(userrec *user,chanrec *c)
-{
-        if ((!c) || (!user))
-        {
-                log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
-                return;
-        }
-
-        snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
-
-        std::vector<char*> *ulist = c->GetUsers();
-        for (unsigned int i = 0; i < ulist->size(); i++)
-        {
-                char* o = (*ulist)[i];
-                userrec* otheruser = (userrec*)o;
-                if ((!has_channel(user,c)) && (strchr(otheruser->modes,'i')))
-                {
-                        /* user is +i, and source not on the channel, does not show
-                         * nick in NAMES list */
-                        continue;
-                }
-                strlcat(list,cmode(otheruser,c),MAXBUF);
-                strlcat(list,otheruser->nick,MAXBUF);
-                strlcat(list," ",MAXBUF);
-                if (strlen(list)>(480-NICKMAX))
-                {
-                        /* list overflowed into
-                         * multiple numerics */
-                        WriteServ(user->fd,"%s",list);
-                        snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
-                }
-        }
-        /* if whats left in the list isnt empty, send it */
-        if (list[strlen(list)-1] != ':')
-        {
-                WriteServ(user->fd,"%s",list);
-        }
+       // Whilst simple hostnames (e.g. localhost) are valid we do not allow the server to use
+       // them to prevent issues with clients that differentiate between short client and server
+       // prefixes by checking whether the nickname contains a dot.
+       return numdots;
 }
 
-/* return a count of the users on a specific channel accounting for
- * invisible users who won't increase the count. e.g. for /LIST */
-
-int usercount_i(chanrec *c)
+bool InspIRCd::IsSID(const std::string &str)
 {
-        int count = 0;
-
-        if (!c)
-        {
-                log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
-                return 0;
-        }
-
-        strcpy(list,"");
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if (i->second)
-                {
-                        if (has_channel(i->second,c))
-                        {
-                                if (isnick(i->second->nick))
-                                {
-                                        if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
-                                        {
-                                                /* user is +i, and source not on the channel, does not show
-                                                 * nick in NAMES list */
-                                                continue;
-                                        }
-                                        count++;
-                                }
-                        }
-                }
-        }
-        log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
-        return count;
+       /* Returns true if the string given is exactly 3 characters long,
+        * starts with a digit, and the other two characters are A-Z or digits
+        */
+       return ((str.length() == 3) && isdigit(str[0]) &&
+                       ((str[1] >= 'A' && str[1] <= 'Z') || isdigit(str[1])) &&
+                        ((str[2] >= 'A' && str[2] <= 'Z') || isdigit(str[2])));
 }
 
-
-int usercount(chanrec *c)
-{
-        if (!c)
-        {
-                log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
-                return 0;
-        }
-        int count = c->GetUserCounter();
-        log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
-        return count;
+/** A lookup table of values for multiplier characters used by
+ * InspIRCd::Duration(). In this lookup table, the indexes for
+ * the ascii values 'm' and 'M' have the value '60', the indexes
+ * for the ascii values 'D' and 'd' have a value of '86400', etc.
+ */
+static const unsigned int duration_multi[] =
+{
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 86400, 0, 0, 0, 3600, 0, 0, 0, 0, 60, 0, 0,
+       0, 0, 0, 1, 0, 0, 0, 604800, 0, 31557600, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 86400, 0, 0, 0, 3600, 0, 0, 0, 0, 60, 0, 0,
+       0, 0, 0, 1, 0, 0, 0, 604800, 0, 31557600, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+};
+
+bool InspIRCd::Duration(const std::string& str, unsigned long& duration)
+{
+       unsigned long total = 0;
+       unsigned long subtotal = 0;
+
+       /* Iterate each item in the string, looking for number or multiplier */
+       for (std::string::const_iterator i = str.begin(); i != str.end(); ++i)
+       {
+               /* Found a number, queue it onto the current number */
+               if ((*i >= '0') && (*i <= '9'))
+               {
+                       subtotal = (subtotal * 10) + (*i - '0');
+               }
+               else
+               {
+                       /* Found something that's not a number, find out how much
+                        * it multiplies the built up number by, multiply the total
+                        * and reset the built up number.
+                        */
+                       unsigned int multiplier = duration_multi[static_cast<unsigned char>(*i)];
+                       if (multiplier == 0)
+                               return false;
+
+                       total += subtotal * multiplier;
+
+                       /* Next subtotal please */
+                       subtotal = 0;
+               }
+       }
+       /* Any trailing values built up are treated as raw seconds */
+       duration = total + subtotal;
+       return true;
 }
 
-
-// looks up a users password for their connection class (<ALLOW>/<DENY> tags)
-
-char* Passwd(userrec *user)
+unsigned long InspIRCd::Duration(const std::string& str)
 {
-        for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
-        {
-                if (match(user->host,i->host) && (i->type == CC_ALLOW))
-                {
-                        return i->pass;
-                }
-        }
-        return "";
+       unsigned long out = 0;
+       InspIRCd::Duration(str, out);
+       return out;
 }
 
-bool IsDenied(userrec *user)
+bool InspIRCd::IsValidDuration(const std::string& duration)
 {
-        for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
-        {
-                if (match(user->host,i->host) && (i->type == CC_DENY))
-                {
-                        return true;
-                }
-        }
-        return false;
-}
-
-
-
-
-/* sends out an error notice to all connected clients (not to be used
- * lightly!) */
+       for (std::string::const_iterator i = duration.begin(); i != duration.end(); ++i)
+       {
+               unsigned char c = *i;
+               if (((c >= '0') && (c <= '9')))
+                       continue;
 
-void send_error(char *s)
-{
-        log(DEBUG,"send_error: %s",s);
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if (isnick(i->second->nick))
-                {
-                        WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
-                }
-                else
-                {
-                        // fix - unregistered connections receive ERROR, not NOTICE
-                        Write(i->second->fd,"ERROR :%s",s);
-                }
-        }
+               if (!duration_multi[c])
+                       return false;
+       }
+       return true;
 }
 
-void Error(int status)
+std::string InspIRCd::DurationString(time_t duration)
 {
-        signal (SIGALRM, SIG_IGN);
-        signal (SIGPIPE, SIG_IGN);
-        signal (SIGTERM, SIG_IGN);
-        signal (SIGABRT, SIG_IGN);
-        signal (SIGSEGV, SIG_IGN);
-        signal (SIGURG, SIG_IGN);
-        signal (SIGKILL, SIG_IGN);
-        log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
-        send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
-        Exit(status);
-}
+       if (duration == 0)
+               return "0s";
 
-// this function counts all users connected, wether they are registered or NOT.
-int usercnt(void)
-{
-        return clientlist.size();
-}
+       time_t years = duration / 31449600;
+       time_t weeks = (duration / 604800) % 52;
+       time_t days = (duration / 86400) % 7;
+       time_t hours = (duration / 3600) % 24;
+       time_t minutes = (duration / 60) % 60;
+       time_t seconds = duration % 60;
 
-// this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
-int registered_usercount(void)
-{
-        int c = 0;
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if ((i->second->fd) && (isnick(i->second->nick))) c++;
-        }
-        return c;
-}
+       std::string ret;
 
-int usercount_invisible(void)
-{
-        int c = 0;
+       if (years)
+               ret = ConvToStr(years) + "y";
+       if (weeks)
+               ret += ConvToStr(weeks) + "w";
+       if (days)
+               ret += ConvToStr(days) + "d";
+       if (hours)
+               ret += ConvToStr(hours) + "h";
+       if (minutes)
+               ret += ConvToStr(minutes) + "m";
+       if (seconds)
+               ret += ConvToStr(seconds) + "s";
 
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
-        }
-        return c;
+       return ret;
 }
 
-int usercount_opers(void)
+std::string InspIRCd::Format(va_list& vaList, const char* formatString)
 {
-        int c = 0;
+       static std::vector<char> formatBuffer(1024);
 
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
-        }
-        return c;
-}
+       while (true)
+       {
+               va_list dst;
+               va_copy(dst, vaList);
 
-int usercount_unknown(void)
-{
-        int c = 0;
-
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if ((i->second->fd) && (i->second->registered != 7))
-                        c++;
-        }
-        return c;
-}
+               int vsnret = vsnprintf(&formatBuffer[0], formatBuffer.size(), formatString, dst);
+               va_end(dst);
 
-long chancount(void)
-{
-        return chanlist.size();
-}
+               if (vsnret > 0 && static_cast<unsigned>(vsnret) < formatBuffer.size())
+               {
+                       break;
+               }
 
-long count_servs(void)
-{
-        return 0;
-}
+               formatBuffer.resize(formatBuffer.size() * 2);
+       }
 
-long servercount(void)
-{
-        return count_servs()+1;
+       return std::string(&formatBuffer[0]);
 }
 
-long local_count()
+std::string InspIRCd::Format(const char* formatString, ...)
 {
-        int c = 0;
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
-        }
-        return c;
+       std::string ret;
+       VAFORMAT(ret, formatString, formatString);
+       return ret;
 }
 
-void ShowMOTD(userrec *user)
+std::string InspIRCd::TimeString(time_t curtime, const char* format, bool utc)
 {
-        char buf[65536];
-        std::string WholeMOTD = "";
-        if (!MOTD.size())
-        {
-                WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
-                return;
-        }
-        snprintf(buf,65535,":%s 375 %s :- %s message of the day\r\n", ServerName, user->nick, ServerName);
-        WholeMOTD = WholeMOTD + buf;
-        for (unsigned int i = 0; i != MOTD.size(); i++)
-        {
-                snprintf(buf,65535,":%s 372 %s :- %s\r\n", ServerName, user->nick, MOTD[i].c_str());
-                WholeMOTD = WholeMOTD + buf;
-        }
-        snprintf(buf,65535,":%s 376 %s :End of message of the day.\r\n", ServerName, user->nick);
-        WholeMOTD = WholeMOTD + buf;
-        // only one write operation
-        user->AddWriteBuf(WholeMOTD);
-        statsSent += WholeMOTD.length();
-}
+#ifdef _WIN32
+       if (curtime < 0)
+               curtime = 0;
+#endif
 
-void ShowRULES(userrec *user)
-{
-        if (!RULES.size())
-        {
-                WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
-                return;
-        }
-        WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
-        for (unsigned int i = 0; i != RULES.size(); i++)
-        {
-                                WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
-        }
-        WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
-}
+       struct tm* timeinfo = utc ? gmtime(&curtime) : localtime(&curtime);
+       if (!timeinfo)
+       {
+               curtime = 0;
+               timeinfo = localtime(&curtime);
+       }
 
-// this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
-// (until this returns true, a user will block in the waiting state, waiting to connect up to the
-// registration timeout maximum seconds)
-bool AllModulesReportReady(userrec* user)
-{
-        for (int i = 0; i <= MODCOUNT; i++)
-        {
-                int res = modules[i]->OnCheckReady(user);
-                        if (!res)
-                                return false;
-        }
-        return true;
-}
+       // If the calculated year exceeds four digits or is less than the year 1000,
+       // the behavior of asctime() is undefined
+       if (timeinfo->tm_year + 1900 > 9999)
+               timeinfo->tm_year = 9999 - 1900;
+       else if (timeinfo->tm_year + 1900 < 1000)
+               timeinfo->tm_year = 0;
 
-char islast(const char* s)
-{
-        return '+';
-}
+       // This is the default format used by asctime without the terminating new line.
+       if (!format)
+               format = "%a %b %d %Y %H:%M:%S";
 
-long map_count(const char* s)
-{
-        int c = 0;
-        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
-        {
-                if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
-        }
-        return c;
-}
+       char buffer[512];
+       if (!strftime(buffer, sizeof(buffer), format, timeinfo))
+               buffer[0] = '\0';
 
-void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
-{
-        command_t comm;
-        /* create the command and push it onto the table */
-        strlcpy(comm.command,cmd,MAXBUF);
-        strlcpy(comm.source,source,MAXBUF);
-        comm.handler_function = f;
-        comm.flags_needed = flags;
-        comm.min_params = minparams;
-        comm.use_count = 0;
-        comm.total_bytes = 0;
-        cmdlist.push_back(comm);
-        log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
+       return buffer;
 }
 
-
-void SetupCommandTable(void)
+std::string InspIRCd::GenRandomStr(unsigned int length, bool printable)
 {
-        createcommand("USER",handle_user,0,4,"<core>");
-        createcommand("NICK",handle_nick,0,1,"<core>");
-        createcommand("QUIT",handle_quit,0,0,"<core>");
-        createcommand("VERSION",handle_version,0,0,"<core>");
-        createcommand("PING",handle_ping,0,1,"<core>");
-        createcommand("PONG",handle_pong,0,1,"<core>");
-        createcommand("ADMIN",handle_admin,0,0,"<core>");
-        createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
-        createcommand("INFO",handle_info,0,0,"<core>");
-        createcommand("TIME",handle_time,0,0,"<core>");
-        createcommand("WHOIS",handle_whois,0,1,"<core>");
-        createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
-        createcommand("NOTICE",handle_notice,0,2,"<core>");
-        createcommand("JOIN",handle_join,0,1,"<core>");
-        createcommand("NAMES",handle_names,0,0,"<core>");
-        createcommand("PART",handle_part,0,1,"<core>");
-        createcommand("KICK",handle_kick,0,2,"<core>");
-        createcommand("MODE",handle_mode,0,1,"<core>");
-        createcommand("TOPIC",handle_topic,0,1,"<core>");
-        createcommand("WHO",handle_who,0,1,"<core>");
-        createcommand("MOTD",handle_motd,0,0,"<core>");
-        createcommand("RULES",handle_rules,0,0,"<core>");
-        createcommand("OPER",handle_oper,0,2,"<core>");
-        createcommand("LIST",handle_list,0,0,"<core>");
-        createcommand("DIE",handle_die,'o',1,"<core>");
-        createcommand("RESTART",handle_restart,'o',1,"<core>");
-        createcommand("KILL",handle_kill,'o',2,"<core>");
-        createcommand("REHASH",handle_rehash,'o',0,"<core>");
-        createcommand("LUSERS",handle_lusers,0,0,"<core>");
-        createcommand("STATS",handle_stats,0,1,"<core>");
-        createcommand("USERHOST",handle_userhost,0,1,"<core>");
-        createcommand("AWAY",handle_away,0,0,"<core>");
-        createcommand("ISON",handle_ison,0,0,"<core>");
-        createcommand("SUMMON",handle_summon,0,0,"<core>");
-        createcommand("USERS",handle_users,0,0,"<core>");
-        createcommand("INVITE",handle_invite,0,0,"<core>");
-        createcommand("PASS",handle_pass,0,1,"<core>");
-        createcommand("TRACE",handle_trace,'o',0,"<core>");
-        createcommand("WHOWAS",handle_whowas,0,1,"<core>");
-        createcommand("CONNECT",handle_connect,'o',1,"<core>");
-        createcommand("SQUIT",handle_squit,'o',0,"<core>");
-        createcommand("MODULES",handle_modules,0,0,"<core>");
-        createcommand("LINKS",handle_links,0,0,"<core>");
-        createcommand("MAP",handle_map,0,0,"<core>");
-        createcommand("KLINE",handle_kline,'o',1,"<core>");
-        createcommand("GLINE",handle_gline,'o',1,"<core>");
-        createcommand("ZLINE",handle_zline,'o',1,"<core>");
-        createcommand("QLINE",handle_qline,'o',1,"<core>");
-        createcommand("ELINE",handle_eline,'o',1,"<core>");
-        createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
-        createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
-        createcommand("SERVER",handle_server,0,0,"<core>");
-       createcommand("COMMANDS",handle_commands,0,0,"<core>");
+       std::vector<char> str(length);
+       GenRandom(&str[0], length);
+       if (printable)
+               for (size_t i = 0; i < length; i++)
+                       str[i] = 0x3F + (str[i] & 0x3F);
+       return std::string(&str[0], str.size());
 }
 
-bool DirValid(char* dirandfile)
+// NOTE: this has a slight bias for lower values if max is not a power of 2.
+// Don't use it if that matters.
+unsigned long InspIRCd::GenRandomInt(unsigned long max)
 {
-        char work[MAXBUF];
-        strlcpy(work,dirandfile,MAXBUF);
-        int p = strlen(work);
-        // we just want the dir
-        while (strlen(work))
-        {
-                if (work[p] == '/')
-                {
-                        work[p] = '\0';
-                        break;
-                }
-                work[p--] = '\0';
-        }
-        char buffer[MAXBUF], otherdir[MAXBUF];
-        // Get the current working directory
-        if( getcwd( buffer, MAXBUF ) == NULL )
-                return false;
-        chdir(work);
-        if( getcwd( otherdir, MAXBUF ) == NULL )
-                return false;
-        chdir(buffer);
-        if (strlen(otherdir) >= strlen(work))
-        {
-                otherdir[strlen(work)] = '\0';
-                if (!strcmp(otherdir,work))
-                {
-                        return true;
-                }
-                return false;
-        }
-        else return false;
+       unsigned long rv;
+       GenRandom((char*)&rv, sizeof(rv));
+       return rv % max;
 }
 
-std::string GetFullProgDir(char** argv, int argc)
+// This is overridden by a higher-quality algorithm when TLS (SSL) support is loaded
+void InspIRCd::DefaultGenRandom(char* output, size_t max)
 {
-        char work[MAXBUF];
-        strlcpy(work,argv[0],MAXBUF);
-        int p = strlen(work);
-        // we just want the dir
-        while (strlen(work))
-        {
-                if (work[p] == '/')
-                {
-                        work[p] = '\0';
-                        break;
-                }
-                work[p--] = '\0';
-        }
-        char buffer[MAXBUF], otherdir[MAXBUF];
-        // Get the current working directory
-        if( getcwd( buffer, MAXBUF ) == NULL )
-                return "";
-        chdir(work);
-        if( getcwd( otherdir, MAXBUF ) == NULL )
-                return "";
-        chdir(buffer);
-        return otherdir;
+#if defined HAS_ARC4RANDOM_BUF
+       arc4random_buf(output, max);
+#else
+       for (unsigned int i = 0; i < max; ++i)
+# ifdef _WIN32
+       {
+               unsigned int uTemp;
+               if(rand_s(&uTemp) != 0)
+                       output[i] = rand();
+               else
+                       output[i] = uTemp;
+       }
+# else
+               output[i] = random();
+# endif
+#endif
 }
-