+const char* userrec::GetWriteError()
+{
+ return this->WriteError.c_str();
+}
+
+void AddOper(userrec* user)
+{
+ log(DEBUG,"Oper added to optimization list");
+ all_opers.push_back(user);
+}
+
+void DeleteOper(userrec* user)
+{
+ for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
+ {
+ if (*a == user)
+ {
+ log(DEBUG,"Oper removed from optimization list");
+ all_opers.erase(a);
+ return;
+ }
+ }
+}
+
+void kill_link(userrec *user,const char* r)
+{
+ user_hash::iterator iter = clientlist.find(user->nick);
+
+/*
+ * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
+ * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
+ *
+ * I can't imagine this blowing up, so I'm commenting it out. We still check
+ * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
+ *
+ * if (iter == clientlist.end())
+ * return;
+ */
+
+ char reason[MAXBUF];
+
+ strlcpy(reason,r,MAXQUIT-1);
+ log(DEBUG,"kill_link: %s %d '%s'",user->nick,user->fd,reason);
+
+ if (IS_LOCAL(user))
+ Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
+
+ if (user->registered == 7)
+ {
+ purge_empty_chans(user);
+ FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
+ WriteCommonExcept(user,"QUIT :%s",reason);
+ }
+
+ if (IS_LOCAL(user))
+ user->FlushWriteBuf();
+
+ FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
+
+ if (IS_LOCAL(user))
+ {
+ if (Config->GetIOHook(user->port))
+ {
+ try
+ {
+ Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
+ }
+ catch (ModuleException& modexcept)
+ {
+ log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
+ }
+ }
+
+ ServerInstance->SE->DelFd(user->fd);
+ user->CloseSocket();
+ }
+
+ /*
+ * this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
+ * if they were an oper with +s.
+ *
+ * XXX -
+ * In the current implementation, we only show local quits, as we only show local connects. With
+ * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
+ */
+ if (user->registered == 7)
+ {
+ if (IS_LOCAL(user))
+ WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
+ AddWhoWas(user);
+ }
+
+ if (iter != clientlist.end())
+ {
+ log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
+ if (IS_LOCAL(user))
+ {
+ fd_ref_table[user->fd] = NULL;
+ if (find(local_users.begin(),local_users.end(),user) != local_users.end())
+ {
+ local_users.erase(find(local_users.begin(),local_users.end(),user));
+ log(DEBUG,"Delete local user");
+ }
+ }
+ clientlist.erase(iter);
+ DELETE(user);
+ }
+}
+
+WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
+{
+ this->host = strdup(user->host);
+ this->dhost = strdup(user->dhost);
+ this->ident = strdup(user->ident);
+ this->server = user->server;
+ this->gecos = strdup(user->fullname);
+}
+
+WhoWasGroup::~WhoWasGroup()
+{
+ if (host)
+ free(host);
+ if (dhost)
+ free(dhost);
+ if (ident)
+ free(ident);
+ if (gecos)
+ free(gecos);
+}
+
+/* adds or updates an entry in the whowas list */
+void AddWhoWas(userrec* u)
+{
+ whowas_users::iterator iter = whowas.find(u->nick);
+
+ if (iter == whowas.end())
+ {
+ whowas_set* n = new whowas_set;
+ WhoWasGroup *a = new WhoWasGroup(u);
+ n->push_back(a);
+ whowas[u->nick] = n;
+ }
+ else
+ {
+ whowas_set* group = (whowas_set*)iter->second;
+
+ if (group->size() > 10)
+ {
+ WhoWasGroup *a = (WhoWasGroup*)*(group->begin());
+ DELETE(a);
+ group->pop_front();
+ }
+
+ WhoWasGroup *a = new WhoWasGroup(u);
+ group->push_back(a);
+ }
+}
+
+/* every hour, run this function which removes all entries over 3 days */
+void MaintainWhoWas(time_t TIME)
+{
+ for (whowas_users::iterator iter = whowas.begin(); iter != whowas.end(); iter++)
+ {
+ whowas_set* n = (whowas_set*)iter->second;
+ if (n->size())
+ {
+ while ((n->begin() != n->end()) && ((*n->begin())->signon < TIME - 259200)) // 3 days
+ {
+ WhoWasGroup *a = *(n->begin());
+ DELETE(a);
+ n->erase(n->begin());
+ }
+ }
+ }
+}
+
+/* add a client connection to the sockets list */
+void AddClient(int socket, int port, bool iscached, in_addr ip4)
+{
+ std::string tempnick = ConvToStr(socket) + "-unknown";
+ user_hash::iterator iter = clientlist.find(tempnick);
+ const char *ipaddr = inet_ntoa(ip4);
+ int j = 0;
+
+ /*
+ * fix by brain.
+ * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
+ * using one as a registered connection. As they are per fd, we can also safely assume
+ * that we wont have collisions. Therefore, if the nick exists in the list, its only
+ * used by a dead socket, erase the iterator so that the new client may reclaim it.
+ * this was probably the cause of 'server ignores me when i hammer it with reconnects'
+ * issue in earlier alphas/betas
+ */
+ if (iter != clientlist.end())
+ {
+ userrec* goner = iter->second;
+ DELETE(goner);
+ clientlist.erase(iter);
+ }
+
+ log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
+
+ clientlist[tempnick] = new userrec();
+ clientlist[tempnick]->fd = socket;
+ strlcpy(clientlist[tempnick]->nick,tempnick.c_str(),NICKMAX-1);
+
+ /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
+ for (char* temp = (char*)ipaddr; *temp && j < 64; temp++, j++)
+ clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = *temp;
+ clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = 0;
+
+ clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
+ /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
+ strcpy(clientlist[tempnick]->ident, "unknown");
+
+ clientlist[tempnick]->registered = 0;
+ clientlist[tempnick]->signon = TIME + Config->dns_timeout;
+ clientlist[tempnick]->lastping = 1;
+ clientlist[tempnick]->ip4 = ip4;
+ clientlist[tempnick]->port = port;
+
+ // set the registration timeout for this user
+ unsigned long class_regtimeout = 90;
+ int class_flood = 0;
+ long class_threshold = 5;
+ long class_sqmax = 262144; // 256kb
+ long class_rqmax = 4096; // 4k
+
+ for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
+ {
+ if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str())))
+ {
+ class_regtimeout = (unsigned long)i->registration_timeout;
+ class_flood = i->flood;
+ clientlist[tempnick]->pingmax = i->pingtime;
+ class_threshold = i->threshold;
+ class_sqmax = i->sendqmax;
+ class_rqmax = i->recvqmax;
+ break;
+ }
+ }
+
+ clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
+ clientlist[tempnick]->timeout = TIME+class_regtimeout;
+ clientlist[tempnick]->flood = class_flood;
+ clientlist[tempnick]->threshold = class_threshold;
+ clientlist[tempnick]->sendqmax = class_sqmax;
+ clientlist[tempnick]->recvqmax = class_rqmax;
+
+ fd_ref_table[socket] = clientlist[tempnick];
+ local_users.push_back(clientlist[tempnick]);
+
+ if (local_users.size() > Config->SoftLimit)
+ {
+ kill_link(clientlist[tempnick],"No more connections allowed");
+ return;
+ }
+
+ if (local_users.size() >= MAXCLIENTS)
+ {
+ kill_link(clientlist[tempnick],"No more connections allowed");
+ return;
+ }
+
+ /*
+ * XXX -
+ * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
+ * its a pretty big but for the moment valid assumption:
+ * file descriptors are handed out starting at 0, and are recycled as theyre freed.
+ * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
+ * irc server at once (or the irc server otherwise initiating this many connections, files etc)
+ * which for the time being is a physical impossibility (even the largest networks dont have more
+ * than about 10,000 users on ONE server!)
+ */
+ if ((unsigned)socket >= MAX_DESCRIPTORS)
+ {
+ kill_link(clientlist[tempnick],"Server is full");
+ return;
+ }
+ char* e = matches_exception(ipaddr);
+ if (!e)
+ {
+ char* r = matches_zline(ipaddr);
+ if (r)
+ {
+ char reason[MAXBUF];
+ snprintf(reason,MAXBUF,"Z-Lined: %s",r);
+ kill_link(clientlist[tempnick],reason);
+ return;
+ }
+ }
+
+ if (socket > -1)
+ {
+ ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
+ }
+
+ WriteServ(clientlist[tempnick]->fd,"NOTICE Auth :*** Looking up your hostname...");
+}
+
+long FindMatchingGlobal(userrec* user)
+{
+ long x = 0;
+ for (user_hash::const_iterator a = clientlist.begin(); a != clientlist.end(); a++)
+ {
+ if (a->second->ip4.s_addr == user->ip4.s_addr)
+ x++;
+ }
+ return x;
+}
+
+long FindMatchingLocal(userrec* user)
+{
+ long x = 0;
+ for (std::vector<userrec*>::const_iterator a = local_users.begin(); a != local_users.end(); a++)
+ {
+ userrec* comp = (userrec*)(*a);
+ if (comp->ip4.s_addr == user->ip4.s_addr)
+ x++;
+ }
+ return x;
+}
+
+void FullConnectUser(userrec* user, CullList* Goners)