-i/* +------------------------------------+
+/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
#include "users.h"
#include "inspircd.h"
#include <stdio.h>
+#ifdef THREADED_DNS
#include <pthread.h>
#include <signal.h>
+#endif
#include "inspstring.h"
+#include "commands.h"
#include "helperfuncs.h"
+#include "typedefs.h"
+#include "socketengine.h"
+#include "hashcomp.h"
+#include "message.h"
+#include "wildcard.h"
+#include "xline.h"
-extern std::stringstream config_f;
-extern char ServerName[MAXBUF];
-
+extern InspIRCd* ServerInstance;
+extern int WHOWAS_STALE;
+extern int WHOWAS_MAX;
+extern std::vector<Module*> modules;
+extern std::vector<ircd_module*> factory;
+extern std::vector<InspSocket*> module_sockets;
+extern int MODCOUNT;
+extern InspSocket* socket_ref[65535];
extern time_t TIME;
+extern SocketEngine* SE;
+extern userrec* fd_ref_table[65536];
+extern serverstats* stats;
+extern ServerConfig *Config;
+extern user_hash clientlist;
+extern whowas_hash whowas;
+extern Module* IOHookModule;
+std::vector<userrec*> local_users;
+
+std::vector<userrec*> all_opers;
+
+template<typename T> inline string ConvToStr(const T &in)
+{
+ stringstream tmp;
+ if (!(tmp << in)) return string();
+ return tmp.str();
+}
userrec::userrec()
{
strcpy(dhost,"");
strcpy(fullname,"");
strcpy(modes,"");
- server = (char*)FindServerNamePtr(ServerName);
+ server = (char*)FindServerNamePtr(Config->ServerName);
strcpy(awaymsg,"");
strcpy(oper,"");
reset_due = TIME;
dns_done = false;
recvq = "";
sendq = "";
- for (int i = 0; i < MAXCHANS; i++)
- {
- this->chans[i].channel = NULL;
- this->chans[i].uc_modes = 0;
- }
+ chans.clear();
invites.clear();
}
userrec::~userrec()
{
- pthread_kill(this->dnsthread,9);
}
void userrec::CloseSocket()
{
if (this->fd > -1)
{
- log(DEBUG,"userrec::ReadData on fd %d",this->fd);
return read(this->fd, buffer, size);
}
else return 0;
return fresult;
}
-bool userrec::IsInvited(char* channel)
+bool userrec::IsInvited(irc::string &channel)
{
for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
{
- if (i->channel) {
- if (!strcasecmp(i->channel,channel))
- {
- return true;
- }
+ irc::string compare = i->channel;
+ if (compare == channel)
+ {
+ return true;
}
}
return false;
return &invites;
}
-void userrec::InviteTo(char* channel)
+void userrec::InviteTo(irc::string &channel)
{
Invited i;
- strlcpy(i.channel,channel,CHANMAX);
+ i.channel = channel;
invites.push_back(i);
}
-void userrec::RemoveInvite(char* channel)
+void userrec::RemoveInvite(irc::string &channel)
{
log(DEBUG,"Removing invites");
- if (channel)
+ if (invites.size())
{
- if (invites.size())
+ for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
{
- for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
- {
- if (i->channel)
- {
- if (!strcasecmp(i->channel,channel))
- {
- invites.erase(i);
- return;
- }
- }
- }
- }
- }
+ irc::string compare = i->channel;
+ if (compare == channel)
+ {
+ invites.erase(i);
+ return;
+ }
+ }
+ }
}
-bool userrec::HasPermission(char* command)
+bool userrec::HasPermission(std::string &command)
{
char TypeName[MAXBUF],Classes[MAXBUF],ClassName[MAXBUF],CommandList[MAXBUF];
char* mycmd;
char* savept;
char* savept2;
+ // users on u-lined servers can completely bypass
+ // all permissions based checks.
+ //
+ // of course, if this is sent to a remote server and this
+ // server is not ulined there, then that other server
+ // silently drops the command.
+ if (is_uline(this->server))
+ return true;
+
// are they even an oper at all?
if (strchr(this->modes,'o'))
{
- log(DEBUG,"*** HasPermission: %s is an oper",this->nick);
- for (int j =0; j < ConfValueEnum("type",&config_f); j++)
+ for (int j =0; j < Config->ConfValueEnum("type",&Config->config_f); j++)
{
- ConfValue("type","name",j,TypeName,&config_f);
+ Config->ConfValue("type","name",j,TypeName,&Config->config_f);
if (!strcmp(TypeName,this->oper))
{
- log(DEBUG,"*** HasPermission: %s is an oper of type '%s'",this->nick,this->oper);
- ConfValue("type","classes",j,Classes,&config_f);
+ Config->ConfValue("type","classes",j,Classes,&Config->config_f);
char* myclass = strtok_r(Classes," ",&savept);
while (myclass)
{
- log(DEBUG,"*** HasPermission: checking classtype '%s'",myclass);
- for (int k =0; k < ConfValueEnum("class",&config_f); k++)
+ for (int k =0; k < Config->ConfValueEnum("class",&Config->config_f); k++)
{
- ConfValue("class","name",k,ClassName,&config_f);
+ Config->ConfValue("class","name",k,ClassName,&Config->config_f);
if (!strcmp(ClassName,myclass))
{
- ConfValue("class","commands",k,CommandList,&config_f);
- log(DEBUG,"*** HasPermission: found class named %s with commands: '%s'",ClassName,CommandList);
-
-
+ Config->ConfValue("class","commands",k,CommandList,&Config->config_f);
mycmd = strtok_r(CommandList," ",&savept2);
while (mycmd)
{
- if (!strcasecmp(mycmd,command))
+ if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
{
- log(DEBUG,"*** Command %s found, returning true",command);
return true;
}
mycmd = strtok_r(NULL," ",&savept2);
return;
if (sendq.length() + data.length() > (unsigned)this->sendqmax)
{
- WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
+ /* Fix by brain - Set the error text BEFORE calling writeopers, because
+ * if we dont it'll recursively call here over and over again trying
+ * to repeatedly add the text to the sendq!
+ */
this->SetWriteError("SendQ exceeded");
+ WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
return;
}
std::stringstream stream;
{
return this->WriteError;
}
+
+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);
+
+ char reason[MAXBUF];
+
+ strncpy(reason,r,MAXBUF);
+
+ if (strlen(reason)>MAXQUIT)
+ {
+ reason[MAXQUIT-1] = '\0';
+ }
+
+ log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
+ Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
+ log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
+
+ if (user->registered == 7) {
+ FOREACH_MOD OnUserQuit(user,reason);
+ WriteCommonExcept(user,"QUIT :%s",reason);
+ }
+
+ user->FlushWriteBuf();
+
+ FOREACH_MOD OnUserDisconnect(user);
+
+ if (user->fd > -1)
+ {
+ if (IOHookModule)
+ {
+ IOHookModule->OnRawSocketClose(user->fd);
+ }
+ 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.
+ if (user->registered == 7) {
+ purge_empty_chans(user);
+ // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
+ if (user->fd > -1)
+ 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 %lu",(unsigned long)user);
+ if (user->fd > -1)
+ {
+ 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;
+}
+
+void kill_link_silent(userrec *user,const char* r)
+{
+ user_hash::iterator iter = clientlist.find(user->nick);
+
+ char reason[MAXBUF];
+
+ strncpy(reason,r,MAXBUF);
+
+ if (strlen(reason)>MAXQUIT)
+ {
+ reason[MAXQUIT-1] = '\0';
+ }
+
+ log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
+ Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
+ log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
+
+ user->FlushWriteBuf();
+
+ if (user->registered == 7) {
+ FOREACH_MOD OnUserQuit(user,reason);
+ WriteCommonExcept(user,"QUIT :%s",reason);
+ }
+
+ FOREACH_MOD OnUserDisconnect(user);
+
+ if (user->fd > -1)
+ {
+ if (IOHookModule)
+ {
+ IOHookModule->OnRawSocketClose(user->fd);
+ }
+ SE->DelFd(user->fd);
+ user->CloseSocket();
+ }
+
+ if (user->registered == 7) {
+ purge_empty_chans(user);
+ }
+
+ if (iter != clientlist.end())
+ {
+ log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
+ if (user->fd > -1)
+ {
+ fd_ref_table[user->fd] = NULL;
+ if (find(local_users.begin(),local_users.end(),user) != local_users.end())
+ {
+ log(DEBUG,"Delete local user");
+ local_users.erase(find(local_users.begin(),local_users.end(),user));
+ }
+ }
+ clientlist.erase(iter);
+ }
+ delete user;
+}
+
+
+/* adds or updates an entry in the whowas list */
+void AddWhoWas(userrec* u)
+{
+ whowas_hash::iterator iter = whowas.find(u->nick);
+ WhoWasUser *a = new WhoWasUser();
+ strlcpy(a->nick,u->nick,NICKMAX);
+ strlcpy(a->ident,u->ident,IDENTMAX);
+ strlcpy(a->dhost,u->dhost,160);
+ strlcpy(a->host,u->host,160);
+ strlcpy(a->fullname,u->fullname,MAXGECOS);
+ strlcpy(a->server,u->server,256);
+ a->signon = u->signon;
+
+ /* MAX_WHOWAS: max number of /WHOWAS items
+ * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
+ * can be replaced by a newer one
+ */
+
+ if (iter == whowas.end())
+ {
+ if (whowas.size() >= (unsigned)WHOWAS_MAX)
+ {
+ for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
+ {
+ // 3600 seconds in an hour ;)
+ if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
+ {
+ // delete the old one
+ if (i->second) delete i->second;
+ // replace with new one
+ i->second = a;
+ log(DEBUG,"added WHOWAS entry, purged an old record");
+ return;
+ }
+ }
+ // no space left and user doesnt exist. Don't leave ram in use!
+ log(DEBUG,"Not able to update whowas (list at WHOWAS_MAX entries and trying to add new?), freeing excess ram");
+ delete a;
+ }
+ else
+ {
+ log(DEBUG,"added fresh WHOWAS entry");
+ whowas[a->nick] = a;
+ }
+ }
+ else
+ {
+ log(DEBUG,"updated WHOWAS entry");
+ if (iter->second) delete iter->second;
+ iter->second = a;
+ }
+}
+
+/* add a client connection to the sockets list */
+void AddClient(int socket, char* host, int port, bool iscached, char* ip)
+{
+ string tempnick;
+ char tn2[MAXBUF];
+ user_hash::iterator iter;
+
+ tempnick = ConvToStr(socket) + "-unknown";
+ sprintf(tn2,"%lu-unknown",(unsigned long)socket);
+
+ iter = clientlist.find(tempnick);
+
+ // 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 theyre 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);
+ }
+
+ /*
+ * It is OK to access the value here this way since we know
+ * it exists, we just created it above.
+ *
+ * At NO other time should you access a value in a map or a
+ * hash_map this way.
+ */
+ clientlist[tempnick] = new userrec();
+
+ NonBlocking(socket);
+ log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
+
+ clientlist[tempnick]->fd = socket;
+ strlcpy(clientlist[tempnick]->nick, tn2,NICKMAX);
+ strlcpy(clientlist[tempnick]->host, host,160);
+ strlcpy(clientlist[tempnick]->dhost, host,160);
+ clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
+ strlcpy(clientlist[tempnick]->ident, "unknown",IDENTMAX);
+ clientlist[tempnick]->registered = 0;
+ clientlist[tempnick]->signon = TIME + Config->dns_timeout;
+ clientlist[tempnick]->lastping = 1;
+ clientlist[tempnick]->port = port;
+ strlcpy(clientlist[tempnick]->ip,ip,16);
+
+ // 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 (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
+ {
+ 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;
+
+ ucrec a;
+ a.channel = NULL;
+ a.uc_modes = 0;
+ for (int i = 0; i < MAXCHANS; i++)
+ clientlist[tempnick]->chans.push_back(a);
+
+ if (clientlist.size() > Config->SoftLimit)
+ {
+ kill_link(clientlist[tempnick],"No more connections allowed");
+ return;
+ }
+
+ if (clientlist.size() >= MAXCLIENTS)
+ {
+ kill_link(clientlist[tempnick],"No more connections allowed");
+ return;
+ }
+
+ // 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 > 65534)
+ {
+ kill_link(clientlist[tempnick],"Server is full");
+ return;
+ }
+ char* e = matches_exception(ip);
+ if (!e)
+ {
+ char* r = matches_zline(ip);
+ if (r)
+ {
+ char reason[MAXBUF];
+ snprintf(reason,MAXBUF,"Z-Lined: %s",r);
+ kill_link(clientlist[tempnick],reason);
+ return;
+ }
+ }
+ fd_ref_table[socket] = clientlist[tempnick];
+ local_users.push_back(clientlist[tempnick]);
+ SE->AddFd(socket,true,X_ESTAB_CLIENT);
+}
+
+void FullConnectUser(userrec* user)
+{
+ stats->statsConnects++;
+ user->idle_lastmsg = TIME;
+ log(DEBUG,"ConnectUser: %s",user->nick);
+
+ if ((strcmp(Passwd(user),"")) && (!user->haspassed))
+ {
+ kill_link(user,"Invalid password");
+ return;
+ }
+ if (IsDenied(user))
+ {
+ kill_link(user,"Unauthorised connection");
+ return;
+ }
+
+ char match_against[MAXBUF];
+ snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
+ char* e = matches_exception(match_against);
+ if (!e)
+ {
+ char* r = matches_gline(match_against);
+ if (r)
+ {
+ char reason[MAXBUF];
+ snprintf(reason,MAXBUF,"G-Lined: %s",r);
+ kill_link_silent(user,reason);
+ return;
+ }
+ r = matches_kline(user->host);
+ if (r)
+ {
+ char reason[MAXBUF];
+ snprintf(reason,MAXBUF,"K-Lined: %s",r);
+ kill_link_silent(user,reason);
+ return;
+ }
+ }
+
+
+ WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
+ WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
+ WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
+ WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
+ WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,Config->ServerName,VERSION);
+ // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
+ std::stringstream v;
+ v << "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
+ v << " MAXBANS=60 NICKLEN=" << NICKMAX;
+ v << " TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=20 AWAYLEN=" << MAXAWAY << " CHANMODES=ohvb,k,l,psmnti NETWORK=";
+ v << Config->Network;
+ std::string data005 = v.str();
+ FOREACH_MOD On005Numeric(data005);
+ // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
+ // so i'd better split it :)
+ std::stringstream out(data005);
+ std::string token = "";
+ std::string line5 = "";
+ int token_counter = 0;
+ while (!out.eof())
+ {
+ out >> token;
+ line5 = line5 + token + " ";
+ token_counter++;
+ if ((token_counter >= 13) || (out.eof() == true))
+ {
+ WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
+ line5 = "";
+ token_counter = 0;
+ }
+ }
+ ShowMOTD(user);
+
+ // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
+ // onto the network and produce 'fake direction'
+ FOREACH_MOD OnUserConnect(user);
+ FOREACH_MOD OnGlobalConnect(user);
+ user->registered = 7;
+ WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
+}
+
+
+/* shows the message of the day, and any other on-logon stuff */
+void ConnectUser(userrec *user)
+{
+ // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
+ if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
+ {
+ FullConnectUser(user);
+ }
+}
+
+/* re-allocates a nick in the user_hash after they change nicknames,
+ * returns a pointer to the new user as it may have moved */
+
+userrec* ReHashNick(char* Old, char* New)
+{
+ //user_hash::iterator newnick;
+ user_hash::iterator oldnick = clientlist.find(Old);
+
+ log(DEBUG,"ReHashNick: %s %s",Old,New);
+
+ if (!strcasecmp(Old,New))
+ {
+ log(DEBUG,"old nick is new nick, skipping");
+ return oldnick->second;
+ }
+
+ if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
+
+ log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
+
+ userrec* olduser = oldnick->second;
+ clientlist[New] = olduser;
+ clientlist.erase(oldnick);
+
+ log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
+
+ return clientlist[New];
+}
+
+void force_nickchange(userrec* user,const char* newnick)
+{
+ char nick[MAXBUF];
+ int MOD_RESULT = 0;
+
+ strcpy(nick,"");
+
+ FOREACH_RESULT(OnUserPreNick(user,newnick));
+ if (MOD_RESULT) {
+ stats->statsCollisions++;
+ kill_link(user,"Nickname collision");
+ return;
+ }
+ if (matches_qline(newnick))
+ {
+ stats->statsCollisions++;
+ kill_link(user,"Nickname collision");
+ return;
+ }
+
+ if (user)
+ {
+ if (newnick)
+ {
+ strncpy(nick,newnick,MAXBUF);
+ }
+ if (user->registered == 7)
+ {
+ char* pars[1];
+ pars[0] = nick;
+ handle_nick(pars,1,user);
+ }
+ }
+}
+