/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * Inspire is copyright (C) 2002-2004 ChatSpike-Dev. * E-mail: * * * * Written by Craig Edwards, Craig McLure, and others. * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ /* Now with added unF! ;) */ using namespace std; #include "inspircd.h" #include "inspircd_io.h" #include "inspircd_util.h" #include "inspircd_config.h" #include #include #include #include #include #include #include #include #ifdef GCC3 #include #else #include #endif #include #include #include #include #include #include #include #include #include "connection.h" #include "users.h" #include "servers.h" #include "ctables.h" #include "globals.h" #include "modules.h" #include "dynamic.h" #include "wildcard.h" #ifdef GCC3 #define nspace __gnu_cxx #else #define nspace std #endif int LogLevel = DEFAULT; char ServerName[MAXBUF]; char Network[MAXBUF]; char ServerDesc[MAXBUF]; char AdminName[MAXBUF]; char AdminEmail[MAXBUF]; char AdminNick[MAXBUF]; char diepass[MAXBUF]; char restartpass[MAXBUF]; char motd[MAXBUF]; char rules[MAXBUF]; char list[MAXBUF]; char PrefixQuit[MAXBUF]; char DieValue[MAXBUF]; int debugging = 0; int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale' int WHOWAS_MAX = 100; // default 100 people maximum in the WHOWAS list int DieDelay = 5; time_t startup_time = time(NULL); int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops time_t nb_start = 0; extern vector modules; std::vector module_names; extern vector factory; std::vector fd_reap; extern int MODCOUNT; bool nofork = false; namespace nspace { template<> struct nspace::hash { size_t operator()(const struct in_addr &a) const { size_t q; memcpy(&q,&a,sizeof(size_t)); return q; } }; template<> struct nspace::hash { size_t operator()(const string &s) const { char a[MAXBUF]; static struct hash strhash; strcpy(a,s.c_str()); strlower(a); return strhash(a); } }; } struct StrHashComp { bool operator()(const string& s1, const string& s2) const { char a[MAXBUF],b[MAXBUF]; strcpy(a,s1.c_str()); strcpy(b,s2.c_str()); return (strcasecmp(a,b) == 0); } }; struct InAddr_HashComp { bool operator()(const in_addr &s1, const in_addr &s2) const { size_t q; size_t p; memcpy(&q,&s1,sizeof(size_t)); memcpy(&p,&s2,sizeof(size_t)); return (q == p); } }; typedef nspace::hash_map, StrHashComp> user_hash; typedef nspace::hash_map, StrHashComp> chan_hash; typedef nspace::hash_map, InAddr_HashComp> address_cache; typedef std::deque command_table; serverrec* me[32]; FILE *log_file; user_hash clientlist; chan_hash chanlist; user_hash whowas; command_table cmdlist; file_cache MOTD; file_cache RULES; address_cache IP; ClassVector Classes; struct linger linger = { 0 }; char bannerBuffer[MAXBUF]; int boundPortCount = 0; int portCount = 0, UDPportCount = 0, ports[MAXSOCKS]; int defaultRoute = 0; connection C; long MyKey = C.GenKey(); /* prototypes */ int has_channel(userrec *u, chanrec *c); int usercount(chanrec *c); int usercount_i(chanrec *c); void update_stats_l(int fd,int data_out); char* Passwd(userrec *user); bool IsDenied(userrec *user); void AddWhoWas(userrec* u); std::vector auth_cookies; std::stringstream config_f(stringstream::in | stringstream::out); void safedelete(userrec *p) { if (p) { log(DEBUG,"deleting %s %s %s %s",p->nick,p->ident,p->dhost,p->fullname); log(DEBUG,"safedelete(userrec*): pointer is safe to delete"); delete p; p = NULL; } else { log(DEBUG,"safedelete(userrec*): unsafe pointer operation squished"); } } void safedelete(chanrec *p) { if (p) { delete p; p = NULL; log(DEBUG,"safedelete(chanrec*): pointer is safe to delete"); } else { log(DEBUG,"safedelete(chanrec*): unsafe pointer operation squished"); } } void tidystring(char* str) { // strips out double spaces before a : parameter char temp[MAXBUF]; bool go_again = true; if (!str) { return; } while ((str[0] == ' ') && (strlen(str)>0)) { str++; } while (go_again) { bool noparse = false; int t = 0, a = 0; go_again = false; while (a < strlen(str)) { if ((a= 512) { str[509] = '\r'; str[510] = '\n'; str[511] = '\0'; } } long GetRevision() { char Revision[] = "$Revision$"; char *s1 = Revision; char *savept; char *v1 = strtok_r(s1," ",&savept); s1 = savept; char *v2 = strtok_r(s1," ",&savept); s1 = savept; return (long)(atof(v2)*10000); } std::string getservername() { return ServerName; } std::string getserverdesc() { return ServerDesc; } std::string getnetworkname() { return Network; } std::string getadminname() { return AdminName; } std::string getadminemail() { return AdminEmail; } std::string getadminnick() { return AdminNick; } 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); strcpy(b,asctime(timeinfo)); b[strlen(b)-1] = ':'; 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) { 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 (!strcmp(linebuf,"")) { 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, %d lines",fname,F.size()); } void ReadConfig(void) { char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF]; ConnectClass c; LoadConf(CONFIG_FILE,&config_f); ConfValue("server","name",0,ServerName,&config_f); ConfValue("server","description",0,ServerDesc,&config_f); ConfValue("server","network",0,Network,&config_f); ConfValue("admin","name",0,AdminName,&config_f); ConfValue("admin","email",0,AdminEmail,&config_f); ConfValue("admin","nick",0,AdminNick,&config_f); ConfValue("files","motd",0,motd,&config_f); ConfValue("files","rules",0,rules,&config_f); ConfValue("power","diepass",0,diepass,&config_f); ConfValue("power","pause",0,pauseval,&config_f); ConfValue("power","restartpass",0,restartpass,&config_f); ConfValue("options","prefixquit",0,PrefixQuit,&config_f); ConfValue("die","value",0,DieValue,&config_f); ConfValue("options","loglevel",0,dbg,&config_f); ConfValue("options","netbuffersize",0,NB,&config_f); NetBufferSize = atoi(NB); if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024)) { log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240."); NetBufferSize = 10240; } if (!strcmp(dbg,"debug")) LogLevel = DEBUG; if (!strcmp(dbg,"verbose")) LogLevel = VERBOSE; if (!strcmp(dbg,"default")) LogLevel = DEFAULT; if (!strcmp(dbg,"sparse")) LogLevel = SPARSE; if (!strcmp(dbg,"none")) LogLevel = NONE; readfile(MOTD,motd); log(DEBUG,"Reading message of the day"); readfile(RULES,rules); log(DEBUG,"Reading connect classes"); Classes.clear(); for (int i = 0; i < ConfValueEnum("connect",&config_f); i++) { strcpy(Value,""); ConfValue("connect","allow",i,Value,&config_f); ConfValue("connect","timeout",i,timeout,&config_f); ConfValue("connect","flood",i,flood,&config_f); if (strcmp(Value,"")) { strcpy(c.host,Value); c.type = CC_ALLOW; strcpy(Value,""); ConfValue("connect","password",i,Value,&config_f); strcpy(c.pass,Value); c.registration_timeout = 90; // default is 2 minutes c.flood = atoi(flood); if (atoi(timeout)>0) { c.registration_timeout = atoi(timeout); } Classes.push_back(c); log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%d flood=%d",c.host,c.pass,c.registration_timeout,c.flood); } else { ConfValue("connect","deny",i,Value,&config_f); strcpy(c.host,Value); c.type = CC_DENY; Classes.push_back(c); log(DEBUG,"Read connect class type DENY, host=%s",c.host); } } } void Blocking(int s) { int flags; log(DEBUG,"Blocking: %d",s); flags = fcntl(s, F_GETFL, 0); fcntl(s, F_SETFL, flags ^ O_NONBLOCK); } void NonBlocking(int s) { int flags; log(DEBUG,"NonBlocking: %d",s); flags = fcntl(s, F_GETFL, 0); //fcntl(s, F_SETFL, O_NONBLOCK); fcntl(s, F_SETFL, flags | O_NONBLOCK); } int CleanAndResolve (char *resolvedHost, const char *unresolvedHost) { struct hostent *hostPtr = NULL; struct in_addr addr; memset (resolvedHost, '\0',MAXBUF); if(unresolvedHost == NULL) return(ERROR); if ((inet_aton(unresolvedHost,&addr)) == 0) return(ERROR); hostPtr = gethostbyaddr ((char *)&addr.s_addr,sizeof(addr.s_addr),AF_INET); if (hostPtr != NULL) snprintf(resolvedHost,MAXBUF,"%s",hostPtr->h_name); else snprintf(resolvedHost,MAXBUF,"%s",unresolvedHost); return (TRUE); } /* write formatted text to a socket, in same format as printf */ void Write(int sock,char *text, ...) { 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); sprintf(tb,"%s\r\n",textbuffer); chop(tb); if (sock != -1) { write(sock,tb,strlen(tb)); update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */ } } /* write a server formatted numeric response to a single socket */ void WriteServ(int sock, char* text, ...) { 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); sprintf(tb,":%s %s\r\n",ServerName,textbuffer); chop(tb); if (sock != -1) { write(sock,tb,strlen(tb)); update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */ } } /* write text from an originating user to originating user */ void WriteFrom(int sock, userrec *user,char* text, ...) { 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); sprintf(tb,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer); chop(tb); if (sock != -1) { write(sock,tb,strlen(tb)); update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */ } } /* write text to an destination user from a source user (e.g. user privmsg) */ void WriteTo(userrec *source, userrec *dest,char *data, ...) { if ((!dest) || (!data)) { log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter"); 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); } } /* 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, ...) { 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); for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (has_channel(i->second,Ptr)) { WriteTo(user,i->second,"%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 */ 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); for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (has_channel(i->second,Ptr)) { if (i->second->fd != -1) { if (!user) { WriteServ(i->second->fd,"%s",textbuffer); } else { WriteTo(user,i->second,"%s",textbuffer); } } } } } void WriteChannelWithServ(char* ServerName, chanrec* Ptr, userrec* user, char* text, ...) { if ((!Ptr) || (!user) || (!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); for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (i->second) { if (has_channel(i->second,Ptr)) { WriteServ(i->second->fd,"%s",textbuffer); } } } } /* 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, ...) { 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); for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (i->second) { if (has_channel(i->second,Ptr) && (user != i->second)) { WriteTo(user,i->second,"%s",textbuffer); } } } } int c_count(userrec* u) { int z = 0; for (int i =0; i != MAXCHANS; i++) if (u->chans[i].channel != NULL) z++; return z; } std::string GetServerDescription(char* servername) { for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername)) { return me[j]->connectors[k].GetDescription(); } } } return ServerDesc; // not a remote server that can be found, it must be me. } } /* return 0 or 1 depending if users u and u2 share one or more common channels * (used by QUIT, NICK etc which arent channel specific notices) */ int common_channels(userrec *u, userrec *u2) { int i = 0; int z = 0; if ((!u) || (!u2)) { log(DEFAULT,"*** BUG *** common_channels was given an invalid parameter"); return 0; } for (int i = 0; i != MAXCHANS; i++) { for (z = 0; z != MAXCHANS; z++) { if ((u->chans[i].channel != NULL) && (u2->chans[z].channel != NULL)) { if ((u->chans[i].channel == u2->chans[z].channel) && (u->chans[i].channel) && (u2->chans[z].channel) && (u->registered == 7) && (u2->registered == 7)) { if ((c_count(u)) && (c_count(u2))) { return 1; } } } } } return 0; } /* write a formatted string to all users who share at least one common * channel, including the source user e.g. for use in NICK */ 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); WriteFrom(u->fd,u,"%s",textbuffer); for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (i->second) { if (common_channels(u,i->second) && (i->second != u)) { WriteFrom(i->second->fd,u,"%s",textbuffer); } } } } /* 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); for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (i->second) { if ((common_channels(u,i->second)) && (u != i->second)) { WriteFrom(i->second->fd,u,"%s",textbuffer); } } } } void WriteOpers(char* text, ...) { 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 (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (i->second) { if (strchr(i->second->modes,'o')) { if (strchr(i->second->modes,'s')) { // send server notices to all with +s // (TODO: needs SNOMASKs) WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer); } } } } } // returns TRUE of any users on channel C occupy server 'servername'. bool ChanAnyOnThisServer(chanrec *c,char* servername) { log(DEBUG,"ChanAnyOnThisServer"); for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (has_channel(i->second,c)) { if (!strcasecmp(i->second->server,servername)) { return true; } } } return false; } // returns true if user 'u' shares any common channels with any users on server 'servername' bool CommonOnThisServer(userrec* u,const char* servername) { log(DEBUG,"ChanAnyOnThisServer"); for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++) { if ((common_channels(u,i->second)) && (u != i->second)) { if (!strcasecmp(i->second->server,servername)) { log(DEBUG,"%s is common to %s sharing with %s",i->second->nick,servername,u->nick); return true; } } } return false; } void NetSendToCommon(userrec* u, char* s) { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"%s",s); log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s); for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str())) { me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str()); } } } } } void NetSendToAll(char* s) { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"%s",s); log(DEBUG,"NetSendToAll: '%s'",s); for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str()); } } } } void NetSendToAllAlive(char* s) { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"%s",s); log(DEBUG,"NetSendToAllAlive: '%s'",s); for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED) { me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str()); } else { log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str()); } } } } } void NetSendToOne(char* target,char* s) { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"%s",s); log(DEBUG,"NetSendToOne: '%s' '%s'",target,s); for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target)) { me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str()); } } } } } void NetSendToAllExcept(const char* target,char* s) { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"%s",s); log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s); for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target)) { me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str()); } } } } } bool hasumode(userrec* user, char mode) { if (user) { return (strchr(user->modes,mode)>0); } else 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); for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (i->second) { bool send_to_user = false; if (flags == WM_AND) { send_to_user = true; for (int n = 0; n < strlen(modes); 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 < strlen(modes); 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); } } } } void ChangeName(userrec* user, const char* gecos) { strncpy(user->fullname,gecos,MAXBUF); // TODO: replace these with functions: // NetSendToAll - to all // NetSendToCommon - to all that hold users sharing a common channel with another user // NetSendToOne - to one server // NetSendToAllExcept - send to all but one // all by servername char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"a %s :%s",user->nick,gecos); NetSendToAll(buffer); } void ChangeDisplayedHost(userrec* user, const char* host) { strncpy(user->dhost,host,160); char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"b %s %s",user->nick,host); NetSendToAll(buffer); } void WriteWallOps(userrec *source, bool local_only, char* text, ...) { if ((!text) || (!source)) { log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter"); return; } int i = 0; 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) { if (strchr(i->second->modes,'w')) { WriteTo(source,i->second,"WALLOPS %s",textbuffer); } } } if (!local_only) { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer); NetSendToAll(buffer); } } /* 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) { if (!n) { return; } for (int i = 0; i != strlen(n); i++) { n[i] = tolower(n[i]); if (n[i] == '[') n[i] = '{'; if (n[i] == ']') n[i] = '}'; if (n[i] == '\\') n[i] = '|'; } } /* verify that a user's ident and nickname is valid */ int isident(const char* n) { char v[MAXBUF]; if (!n) { return 0; } if (!strcmp(n,"")) { return 0; } for (int i = 0; i != strlen(n); i++) { if ((n[i] < 33) || (n[i] > 125)) { return 0; } /* can't occur ANYWHERE in an Ident! */ if (strchr("<>,./?:;@'~#=+()*&%$£ \"!",n[i])) { return 0; } } return 1; } int isnick(const char* n) { int i = 0; char v[MAXBUF]; if (!n) { return 0; } if (!strcmp(n,"")) { return 0; } if (strlen(n) > NICKMAX-1) { return 0; } for (int i = 0; i != strlen(n); i++) { if ((n[i] < 33) || (n[i] > 125)) { return 0; } /* can't occur ANYWHERE in a nickname! */ if (strchr("<>,./?:;@'~#=+()*&%$£ \"!",n[i])) { return 0; } /* can't occur as the first char of a nickname... */ if ((strchr("0123456789",n[i])) && (!i)) { return 0; } } return 1; } /* Find a user record by nickname and return a pointer to it */ userrec* Find(string nick) { user_hash::iterator iter = clientlist.find(nick); if (iter == clientlist.end()) /* Couldn't find it */ return NULL; return iter->second; } void update_stats_l(int fd,int data_out) /* add one line-out to stats L for this fd */ { for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (i->second) { if (i->second->fd == fd) { i->second->bytes_out+=data_out; i->second->cmds_out++; } } } } /* find a channel record by channel name and return a pointer to it */ chanrec* FindChan(const char* chan) { if (!chan) { log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter"); return NULL; } chan_hash::iterator iter = chanlist.find(chan); if (iter == chanlist.end()) /* Couldn't find it */ return NULL; return iter->second; } void purge_empty_chans(void) { int go_again = 1, purge = 0; while (go_again) { go_again = 0; for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++) { if (i->second) { if (!usercount(i->second)) { /* kill the record */ if (i != chanlist.end()) { log(DEBUG,"del_channel: destroyed: %s",i->second->name); delete i->second; chanlist.erase(i); go_again = 1; purge++; break; } } else { log(DEBUG,"skipped purge for %s",i->second->name); } } } } log(DEBUG,"completed channel purge, killed %d",purge); } /* returns the status character for a given user on a channel, e.g. @ for op, * % for halfop etc. If the user has several modes set, the highest mode * the user has must be returned. */ char* cmode(userrec *user, chanrec *chan) { if ((!user) || (!chan)) { log(DEFAULT,"*** BUG *** cmode was given an invalid parameter"); return ""; } int i; for (int i = 0; i != MAXCHANS; i++) { if ((user->chans[i].channel == chan) && (chan != NULL)) { if ((user->chans[i].uc_modes & UCMODE_OP) > 0) { return "@"; } if ((user->chans[i].uc_modes & UCMODE_HOP) > 0) { return "%"; } if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0) { return "+"; } return ""; } } } 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->noexternal) { strncat(scratch,"n",MAXMODES); } if (chan->topiclock) { strncat(scratch,"t",MAXMODES); } if (strcmp(chan->key,"")) { strncat(scratch,"k",MAXMODES); } if (chan->limit) { strncat(scratch,"l",MAXMODES); } if (chan->inviteonly) { strncat(scratch,"i",MAXMODES); } if (chan->moderated) { strncat(scratch,"m",MAXMODES); } if (chan->secret) { strncat(scratch,"s",MAXMODES); } if (chan->c_private) { strncat(scratch,"p",MAXMODES); } if (strcmp(chan->key,"")) { strncat(sparam,chan->key,MAXBUF); } if (chan->limit) { char foo[24]; sprintf(foo," %d",chan->limit); strncat(sparam,foo,MAXBUF); } if (strlen(chan->custom_modes)) { strncat(scratch,chan->custom_modes,MAXMODES); for (int z = 0; z < strlen(chan->custom_modes); z++) { std::string extparam = chan->GetModeParameter(chan->custom_modes[z]); if (extparam != "") { strncat(sparam," ",MAXBUF); strncat(sparam,extparam.c_str(),MAXBUF); } } } log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam); strncat(scratch,sparam,MAXMODES); return scratch; } /* returns the status value for a given user on a channel, e.g. STATUS_OP for * op, STATUS_VOICE for voice etc. If the user has several modes set, the * highest mode the user has must be returned. */ int cstatus(userrec *user, chanrec *chan) { if ((!chan) || (!user)) { log(DEFAULT,"*** BUG *** cstatus was given an invalid parameter"); return 0; } for (int i = 0; i != MAXCHANS; i++) { if ((user->chans[i].channel == chan) && (chan != NULL)) { if ((user->chans[i].uc_modes & UCMODE_OP) > 0) { return STATUS_OP; } if ((user->chans[i].uc_modes & UCMODE_HOP) > 0) { return STATUS_HOP; } if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0) { return STATUS_VOICE; } return STATUS_NORMAL; } } } /* compile a userlist of a channel into a string, each nick seperated by * spaces and op, voice etc status shown as @ and + */ void userlist(userrec *user,chanrec *c) { if ((!c) || (!user)) { log(DEFAULT,"*** BUG *** userlist was given an invalid parameter"); return; } sprintf(list,"353 %s = %s :", user->nick, c->name); for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { 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; } strcat(list,cmode(i->second,c)); strcat(list,i->second->nick); strcat(list," "); if (strlen(list)>(480-NICKMAX)) { /* list overflowed into * multiple numerics */ WriteServ(user->fd,list); sprintf(list,"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,list); } } /* 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) { int i = 0; 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 %d",c->name,count); return count; } int usercount(chanrec *c) { int i = 0; int count = 0; if (!c) { log(DEFAULT,"*** BUG *** usercount 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)) && (i->second->registered == 7)) { count++; } } } } log(DEBUG,"usercount: %s %d",c->name,count); return count; } /* add a channel to a user, creating the record for it if needed and linking * it to the user record */ chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override) { if ((!user) || (!cn)) { log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter"); return 0; } int i = 0; chanrec* Ptr; int created = 0; char cname[MAXBUF]; strncpy(cname,cn,MAXBUF); // we MUST declare this wherever we use FOREACH_RESULT int MOD_RESULT = 0; if (strlen(cname) > CHANMAX-1) { cname[CHANMAX-1] = '\0'; } log(DEBUG,"add_channel: %s %s",user->nick,cname); if ((FindChan(cname)) && (has_channel(user,FindChan(cname)))) { return NULL; // already on the channel! } if (!FindChan(cname)) { FOREACH_RESULT(OnUserPreJoin(user,NULL,cname)); if (MOD_RESULT) { return NULL; } /* create a new one */ log(DEBUG,"add_channel: creating: %s",cname); { chanlist[cname] = new chanrec(); strcpy(chanlist[cname]->name, cname); chanlist[cname]->topiclock = 1; chanlist[cname]->noexternal = 1; chanlist[cname]->created = time(NULL); strcpy(chanlist[cname]->topic, ""); strncpy(chanlist[cname]->setby, user->nick,NICKMAX); chanlist[cname]->topicset = 0; Ptr = chanlist[cname]; log(DEBUG,"add_channel: created: %s",cname); /* set created to 2 to indicate user * is the first in the channel * and should be given ops */ created = 2; } } else { /* channel exists, just fish out a pointer to its struct */ Ptr = FindChan(cname); if (Ptr) { log(DEBUG,"add_channel: joining to: %s",Ptr->name); // the override flag allows us to bypass channel modes // and bans (used by servers) if (!override) { FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname)); if (MOD_RESULT) { return NULL; } if (strcmp(Ptr->key,"")) { log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key); if (!key) { log(DEBUG,"add_channel: no key given in JOIN"); WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name); return NULL; } else { log(DEBUG,"key at %p is %s",key,key); if (strcasecmp(key,Ptr->key)) { log(DEBUG,"add_channel: bad key given in JOIN"); WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name); return NULL; } } } log(DEBUG,"add_channel: no key"); if (Ptr->inviteonly) { log(DEBUG,"add_channel: channel is +i"); if (user->IsInvited(Ptr->name)) { /* user was invited to channel */ /* there may be an optional channel NOTICE here */ } else { WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name); return NULL; } } log(DEBUG,"add_channel: channel is not +i"); if (Ptr->limit) { if (usercount(Ptr) == Ptr->limit) { WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name); return NULL; } } log(DEBUG,"add_channel: about to walk banlist"); /* check user against the channel banlist */ if (Ptr) { if (Ptr->bans.size()) { for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++) { if (match(user->GetFullHost(),i->data)) { WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name); return NULL; } } } } log(DEBUG,"add_channel: bans checked"); if ((Ptr) && (user)) { user->RemoveInvite(Ptr->name); } log(DEBUG,"add_channel: invites removed"); } else { log(DEBUG,"Overridden checks"); } } created = 1; } log(DEBUG,"Passed channel checks"); for (int i =0; i != MAXCHANS; i++) { log(DEBUG,"Check location %d",i); if (user->chans[i].channel == NULL) { log(DEBUG,"Adding into their channel list at location %d",i); if (created == 2) { /* first user in is given ops */ user->chans[i].uc_modes = UCMODE_OP; } else { user->chans[i].uc_modes = 0; } user->chans[i].channel = Ptr; WriteChannel(Ptr,user,"JOIN :%s",Ptr->name); if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it. { // use the stamdard J token with no privilages. char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"J %s :%s",user->nick,Ptr->name); NetSendToAll(buffer); } log(DEBUG,"Sent JOIN to client"); if (Ptr->topicset) { WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic); WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset); } userlist(user,Ptr); WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name); WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr)); WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created); FOREACH_MOD OnUserJoin(user,Ptr); return Ptr; } } log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname); WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname); return NULL; } /* remove a channel from a users record, and remove the record from memory * if the channel has become empty */ chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local) { if ((!user) || (!cname)) { log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter"); return NULL; } chanrec* Ptr; int created = 0; if ((!cname) || (!user)) { return NULL; } Ptr = FindChan(cname); if (!Ptr) { return NULL; } FOREACH_MOD OnUserPart(user,Ptr); log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name); for (int i =0; i != MAXCHANS; i++) { /* zap it from the channel list of the user */ if (user->chans[i].channel == Ptr) { if (reason) { WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason); if (!local) { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason); NetSendToAll(buffer); } } else { if (!local) { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name); NetSendToAll(buffer); } WriteChannel(Ptr,user,"PART :%s",Ptr->name); } user->chans[i].uc_modes = 0; user->chans[i].channel = NULL; log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name); break; } } /* if there are no users left on the channel */ if (!usercount(Ptr)) { chan_hash::iterator iter = chanlist.find(Ptr->name); log(DEBUG,"del_channel: destroying channel: %s",Ptr->name); /* kill the record */ if (iter != chanlist.end()) { log(DEBUG,"del_channel: destroyed: %s",Ptr->name); delete iter->second; chanlist.erase(iter); } } } void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason) { if ((!src) || (!user) || (!Ptr) || (!reason)) { log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter"); return; } int i = 0; int created = 0; if ((!Ptr) || (!user) || (!src)) { return; } log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick); if (!has_channel(user,Ptr)) { WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name); return; } if ((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) { if (cstatus(src,Ptr) == STATUS_HOP) { WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name); } else { WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name); } return; } for (int i =0; i != MAXCHANS; i++) { /* zap it from the channel list of the user */ if (user->chans[i].channel) if (!strcasecmp(user->chans[i].channel->name,Ptr->name)) { WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason); user->chans[i].uc_modes = 0; user->chans[i].channel = NULL; log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name); break; } } /* if there are no users left on the channel */ if (!usercount(Ptr)) { chan_hash::iterator iter = chanlist.find(Ptr->name); log(DEBUG,"del_channel: destroying channel: %s",Ptr->name); /* kill the record */ if (iter != chanlist.end()) { log(DEBUG,"del_channel: destroyed: %s",Ptr->name); delete iter->second; chanlist.erase(iter); } } } /* returns 1 if user u has channel c in their record, 0 if not */ int has_channel(userrec *u, chanrec *c) { if ((!u) || (!c)) { log(DEFAULT,"*** BUG *** has_channel was given an invalid parameter"); return 0; } for (int i =0; i != MAXCHANS; i++) { if (u->chans[i].channel == c) { return 1; } } return 0; } int give_ops(userrec *user,char *dest,chanrec *chan,int status) { userrec *d; int i; if ((!user) || (!dest) || (!chan)) { log(DEFAULT,"*** BUG *** give_ops was given an invalid parameter"); return 0; } if (status < STATUS_OP) { log(DEBUG,"%s cant give ops to %s because they nave status %d and needs %d",user->nick,dest,status,STATUS_OP); WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name); return 0; } else { if (!isnick(dest)) { log(DEFAULT,"the target nickname given to give_ops was invalid"); WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } d = Find(dest); if (!d) { log(DEFAULT,"the target nickname given to give_ops couldnt be found"); WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } else { for (int i = 0; i != MAXCHANS; i++) { if ((d->chans[i].channel != NULL) && (chan != NULL)) if (!strcasecmp(d->chans[i].channel->name,chan->name)) { if (d->chans[i].uc_modes & UCMODE_OP) { /* mode already set on user, dont allow multiple */ log(DEFAULT,"The target user given to give_ops was already opped on the channel"); return 0; } d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_OP; log(DEBUG,"gave ops: %s %s",d->chans[i].channel->name,d->nick); return 1; } } log(DEFAULT,"The target channel given to give_ops was not in the users mode list"); } } return 1; } int give_hops(userrec *user,char *dest,chanrec *chan,int status) { userrec *d; int i; if ((!user) || (!dest) || (!chan)) { log(DEFAULT,"*** BUG *** give_hops was given an invalid parameter"); return 0; } if (status != STATUS_OP) { WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name); return 0; } else { d = Find(dest); if (!isnick(dest)) { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } if (!d) { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } else { for (int i = 0; i != MAXCHANS; i++) { if ((d->chans[i].channel != NULL) && (chan != NULL)) if (!strcasecmp(d->chans[i].channel->name,chan->name)) { if (d->chans[i].uc_modes & UCMODE_HOP) { /* mode already set on user, dont allow multiple */ return 0; } d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_HOP; log(DEBUG,"gave h-ops: %s %s",d->chans[i].channel->name,d->nick); return 1; } } } } return 1; } int give_voice(userrec *user,char *dest,chanrec *chan,int status) { userrec *d; int i; if ((!user) || (!dest) || (!chan)) { log(DEFAULT,"*** BUG *** give_voice was given an invalid parameter"); return 0; } if (status < STATUS_HOP) { WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name); return 0; } else { d = Find(dest); if (!isnick(dest)) { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } if (!d) { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } else { for (int i = 0; i != MAXCHANS; i++) { if ((d->chans[i].channel != NULL) && (chan != NULL)) if (!strcasecmp(d->chans[i].channel->name,chan->name)) { if (d->chans[i].uc_modes & UCMODE_VOICE) { /* mode already set on user, dont allow multiple */ return 0; } d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_VOICE; log(DEBUG,"gave voice: %s %s",d->chans[i].channel->name,d->nick); return 1; } } } } return 1; } int take_ops(userrec *user,char *dest,chanrec *chan,int status) { userrec *d; int i; if ((!user) || (!dest) || (!chan)) { log(DEFAULT,"*** BUG *** take_ops was given an invalid parameter"); return 0; } if (status < STATUS_OP) { log(DEBUG,"%s cant give ops to %s because they have status %d and needs %d",user->nick,dest,status,STATUS_OP); WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name); return 0; } else { d = Find(dest); if (!isnick(dest)) { log(DEBUG,"take_ops was given an invalid target nickname of %s",dest); WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } if (!d) { log(DEBUG,"take_ops couldnt resolve the target nickname: %s",dest); WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } else { for (int i = 0; i != MAXCHANS; i++) { if ((d->chans[i].channel != NULL) && (chan != NULL)) if (!strcasecmp(d->chans[i].channel->name,chan->name)) { if ((d->chans[i].uc_modes & UCMODE_OP) == 0) { /* mode already set on user, dont allow multiple */ return 0; } d->chans[i].uc_modes ^= UCMODE_OP; log(DEBUG,"took ops: %s %s",d->chans[i].channel->name,d->nick); return 1; } } log(DEBUG,"take_ops couldnt locate the target channel in the target users list"); } } return 1; } int take_hops(userrec *user,char *dest,chanrec *chan,int status) { userrec *d; int i; if ((!user) || (!dest) || (!chan)) { log(DEFAULT,"*** BUG *** take_hops was given an invalid parameter"); return 0; } if (status != STATUS_OP) { WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name); return 0; } else { d = Find(dest); if (!isnick(dest)) { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } if (!d) { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } else { for (int i = 0; i != MAXCHANS; i++) { if ((d->chans[i].channel != NULL) && (chan != NULL)) if (!strcasecmp(d->chans[i].channel->name,chan->name)) { if ((d->chans[i].uc_modes & UCMODE_HOP) == 0) { /* mode already set on user, dont allow multiple */ return 0; } d->chans[i].uc_modes ^= UCMODE_HOP; log(DEBUG,"took h-ops: %s %s",d->chans[i].channel->name,d->nick); return 1; } } } } return 1; } int take_voice(userrec *user,char *dest,chanrec *chan,int status) { userrec *d; int i; if ((!user) || (!dest) || (!chan)) { log(DEFAULT,"*** BUG *** take_voice was given an invalid parameter"); return 0; } if (status < STATUS_HOP) { WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name); return 0; } else { d = Find(dest); if (!isnick(dest)) { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } if (!d) { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest); return 0; } else { for (int i = 0; i != MAXCHANS; i++) { if ((d->chans[i].channel != NULL) && (chan != NULL)) if (!strcasecmp(d->chans[i].channel->name,chan->name)) { if ((d->chans[i].uc_modes & UCMODE_VOICE) == 0) { /* mode already set on user, dont allow multiple */ return 0; } d->chans[i].uc_modes ^= UCMODE_VOICE; log(DEBUG,"took voice: %s %s",d->chans[i].channel->name,d->nick); return 1; } } } } return 1; } void TidyBan(char *ban) { if (!ban) { log(DEFAULT,"*** BUG *** TidyBan was given an invalid parameter"); return; } char temp[MAXBUF],NICK[MAXBUF],IDENT[MAXBUF],HOST[MAXBUF]; strcpy(temp,ban); char* pos_of_pling = strchr(temp,'!'); char* pos_of_at = strchr(temp,'@'); pos_of_pling[0] = '\0'; pos_of_at[0] = '\0'; pos_of_pling++; pos_of_at++; strncpy(NICK,temp,NICKMAX); strncpy(IDENT,pos_of_pling,IDENTMAX+1); strncpy(HOST,pos_of_at,160); sprintf(ban,"%s!%s@%s",NICK,IDENT,HOST); } int add_ban(userrec *user,char *dest,chanrec *chan,int status) { if ((!user) || (!dest) || (!chan)) { log(DEFAULT,"*** BUG *** add_ban was given an invalid parameter"); return 0; } BanItem b; if ((!user) || (!dest) || (!chan)) return 0; if (strchr(dest,'!')==0) return 0; if (strchr(dest,'@')==0) return 0; for (int i = 0; i < strlen(dest); i++) if (dest[i] < 32) return 0; for (int i = 0; i < strlen(dest); i++) if (dest[i] > 126) return 0; int c = 0; for (int i = 0; i < strlen(dest); i++) if (dest[i] == '!') c++; if (c>1) return 0; c = 0; for (int i = 0; i < strlen(dest); i++) if (dest[i] == '@') c++; if (c>1) return 0; log(DEBUG,"add_ban: %s %s",chan->name,user->nick); TidyBan(dest); for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++) { if (!strcasecmp(i->data,dest)) { // dont allow a user to set the same ban twice return 0; } } b.set_time = time(NULL); strncpy(b.data,dest,MAXBUF); strncpy(b.set_by,user->nick,NICKMAX); chan->bans.push_back(b); return 1; } int take_ban(userrec *user,char *dest,chanrec *chan,int status) { if ((!user) || (!dest) || (!chan)) { log(DEFAULT,"*** BUG *** take_ban was given an invalid parameter"); return 0; } log(DEBUG,"del_ban: %s %s",chan->name,user->nick); for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++) { if (!strcasecmp(i->data,dest)) { chan->bans.erase(i); return 1; } } return 0; } void process_modes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt, bool servermode, bool silent, bool local) { if (!parameters) { log(DEFAULT,"*** BUG *** process_modes was given an invalid parameter"); return; } char modelist[MAXBUF]; char outlist[MAXBUF]; char outstr[MAXBUF]; char outpars[32][MAXBUF]; int param = 2; int pc = 0; int ptr = 0; int mdir = 1; int r = 0; bool k_set = false, l_set = false; if (pcnt < 2) { return; } log(DEBUG,"process_modes: start: parameters=%d",pcnt); strcpy(modelist,parameters[1]); /* mode list, e.g. +oo-o */ /* parameters[2] onwards are parameters for * modes that require them :) */ strcpy(outlist,"+"); mdir = 1; log(DEBUG,"process_modes: modelist: %s",modelist); for (ptr = 0; ptr < strlen(modelist); ptr++) { r = 0; { log(DEBUG,"process_modes: modechar: %c",modelist[ptr]); char modechar = modelist[ptr]; switch (modelist[ptr]) { case '-': if (mdir != 0) { if ((outlist[strlen(outlist)-1] == '+') || (outlist[strlen(outlist)-1] == '-')) { outlist[strlen(outlist)-1] = '-'; } else { strcat(outlist,"-"); } } mdir = 0; break; case '+': if (mdir != 1) { if ((outlist[strlen(outlist)-1] == '+') || (outlist[strlen(outlist)-1] == '-')) { outlist[strlen(outlist)-1] = '+'; } else { strcat(outlist,"+"); } } mdir = 1; break; case 'o': log(DEBUG,"Ops"); if ((param >= pcnt)) break; log(DEBUG,"Enough parameters left"); if (mdir == 1) { log(DEBUG,"calling give_ops"); r = give_ops(user,parameters[param++],chan,status); } else { log(DEBUG,"calling take_ops"); r = take_ops(user,parameters[param++],chan,status); } if (r) { strcat(outlist,"o"); strcpy(outpars[pc++],parameters[param-1]); } break; case 'h': if ((param >= pcnt)) break; if (mdir == 1) { r = give_hops(user,parameters[param++],chan,status); } else { r = take_hops(user,parameters[param++],chan,status); } if (r) { strcat(outlist,"h"); strcpy(outpars[pc++],parameters[param-1]); } break; case 'v': if ((param >= pcnt)) break; if (mdir == 1) { r = give_voice(user,parameters[param++],chan,status); } else { r = take_voice(user,parameters[param++],chan,status); } if (r) { strcat(outlist,"v"); strcpy(outpars[pc++],parameters[param-1]); } break; case 'b': if ((param >= pcnt)) break; if (mdir == 1) { r = add_ban(user,parameters[param++],chan,status); } else { r = take_ban(user,parameters[param++],chan,status); } if (r) { strcat(outlist,"b"); strcpy(outpars[pc++],parameters[param-1]); } break; case 'k': if ((param >= pcnt)) break; if (mdir == 1) { if (k_set) break; if (!strcmp(chan->key,"")) { strcat(outlist,"k"); char key[MAXBUF]; strcpy(key,parameters[param++]); if (strlen(key)>32) { key[31] = '\0'; } strcpy(outpars[pc++],key); strcpy(chan->key,key); k_set = true; } } else { /* checks on -k are case sensitive and only accurate to the first 32 characters */ char key[MAXBUF]; strcpy(key,parameters[param++]); if (strlen(key)>32) { key[31] = '\0'; } /* only allow -k if correct key given */ if (!strcmp(chan->key,key)) { strcat(outlist,"k"); strcpy(chan->key,""); strcpy(outpars[pc++],key); } } break; case 'l': if (mdir == 0) { if (chan->limit) { strcat(outlist,"l"); chan->limit = 0; } } if ((param >= pcnt)) break; if (mdir == 1) { if (l_set) break; bool invalid = false; for (int i = 0; i < strlen(parameters[param]); i++) { if ((parameters[param][i] < '0') || (parameters[param][i] > '9')) { invalid = true; } } if (atoi(parameters[param]) < 1) { invalid = true; } if (invalid) break; chan->limit = atoi(parameters[param]); if (chan->limit) { strcat(outlist,"l"); strcpy(outpars[pc++],parameters[param++]); l_set = true; } } break; case 'i': if (chan->inviteonly != mdir) { strcat(outlist,"i"); } chan->inviteonly = mdir; break; case 't': if (chan->topiclock != mdir) { strcat(outlist,"t"); } chan->topiclock = mdir; break; case 'n': if (chan->noexternal != mdir) { strcat(outlist,"n"); } chan->noexternal = mdir; break; case 'm': if (chan->moderated != mdir) { strcat(outlist,"m"); } chan->moderated = mdir; break; case 's': if (chan->secret != mdir) { strcat(outlist,"s"); if (chan->c_private) { chan->c_private = 0; if (mdir) { strcat(outlist,"-p+"); } else { strcat(outlist,"+p-"); } } } chan->secret = mdir; break; case 'p': if (chan->c_private != mdir) { strcat(outlist,"p"); if (chan->secret) { chan->secret = 0; if (mdir) { strcat(outlist,"-s+"); } else { strcat(outlist,"+s-"); } } } chan->c_private = mdir; break; default: log(DEBUG,"Preprocessing custom mode %c",modechar); string_list p; p.clear(); if (((!strchr(chan->custom_modes,modechar)) && (!mdir)) || ((strchr(chan->custom_modes,modechar)) && (mdir))) { log(DEBUG,"Mode %c isnt set on %s but trying to remove!",modechar,chan->name); break; } if (ModeDefined(modechar,MT_CHANNEL)) { log(DEBUG,"A module has claimed this mode"); if (param0) && (mdir)) { p.push_back(parameters[param]); } if ((ModeDefinedOff(modechar,MT_CHANNEL)>0) && (!mdir)) { p.push_back(parameters[param]); } } bool handled = false; if (param>=pcnt) { log(DEBUG,"Not enough parameters for module-mode %c",modechar); // we're supposed to have a parameter, but none was given... so dont handle the mode. if (((ModeDefinedOn(modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(modechar,MT_CHANNEL)>0) && (!mdir))) { handled = true; param++; } } for (int i = 0; i <= MODCOUNT; i++) { if (!handled) { if (modules[i]->OnExtendedMode(user,chan,modechar,MT_CHANNEL,mdir,p)) { log(DEBUG,"OnExtendedMode returned nonzero for a module"); char app[] = {modechar, 0}; if (ptr>0) { if ((modelist[ptr-1] == '+') || (modelist[ptr-1] == '-')) { strcat(outlist, app); } else if (!strchr(outlist,modechar)) { strcat(outlist, app); } } chan->SetCustomMode(modechar,mdir); // include parameters in output if mode has them if ((ModeDefinedOn(modechar,MT_CHANNEL)>0) && (mdir)) { chan->SetCustomModeParam(modelist[ptr],parameters[param],mdir); strcpy(outpars[pc++],parameters[param++]); } // break, because only one module can handle the mode. handled = true; } } } } break; } } } /* this ensures only the *valid* modes are sent out onto the network */ while ((outlist[strlen(outlist)-1] == '-') || (outlist[strlen(outlist)-1] == '+')) { outlist[strlen(outlist)-1] = '\0'; } if (strcmp(outlist,"")) { strcpy(outstr,outlist); for (ptr = 0; ptr < pc; ptr++) { strcat(outstr," "); strcat(outstr,outpars[ptr]); } if (local) { log(DEBUG,"Local mode change"); WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outstr); } else { if (servermode) { if (!silent) { WriteChannelWithServ(ServerName,chan,user,"MODE %s %s",chan->name,outstr); // M token for a usermode must go to all servers char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"M %s %s",chan->name, outstr); NetSendToAll(buffer); } } else { if (!silent) { WriteChannel(chan,user,"MODE %s %s",chan->name,outstr); // M token for a usermode must go to all servers char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"m %s %s %s",user->nick,chan->name, outstr); NetSendToAll(buffer); } } } } } // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others. bool allowed_umode(char umode, char* sourcemodes,bool adding) { log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes); // RFC1459 specified modes if ((umode == 'w') || (umode == 's') || (umode == 'i')) { log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode); return true; } // user may not +o themselves or others, but an oper may de-oper other opers or themselves if ((strchr(sourcemodes,'o')) && (!adding)) { log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode); return true; } else if (umode == 'o') { log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode); return false; } // process any module-defined modes that need oper if ((ModeDefinedOper(umode,MT_CLIENT)) && (strchr(sourcemodes,'o'))) { log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode); return true; } else if (ModeDefined(umode,MT_CLIENT)) { // process any module-defined modes that don't need oper log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode); if ((ModeDefinedOper(umode,MT_CLIENT)) && (!strchr(sourcemodes,'o'))) { // no, this mode needs oper, and this user 'aint got what it takes! return false; } return true; } // anything else - return false. log(DEBUG,"umode %c not known by any ruleset",umode); return false; } bool process_module_umode(char umode, userrec* source, void* dest, bool adding) { userrec* s2; bool faked = false; if (!source) { s2 = new userrec; strncpy(s2->nick,ServerName,NICKMAX); strcpy(s2->modes,"o"); s2->fd = -1; source = s2; faked = true; } string_list p; p.clear(); if (ModeDefined(umode,MT_CLIENT)) { for (int i = 0; i <= MODCOUNT; i++) { if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p)) { log(DEBUG,"Module claims umode %c",umode); return true; } } log(DEBUG,"No module claims umode %c",umode); if (faked) { delete s2; source = NULL; } return false; } else { if (faked) { delete s2; source = NULL; } return false; } } void handle_mode(char **parameters, int pcnt, userrec *user) { chanrec* Ptr; userrec* dest; int can_change,i; int direction = 1; char outpars[MAXBUF]; dest = Find(parameters[0]); if (!user) { return; } if ((dest) && (pcnt == 1)) { WriteServ(user->fd,"221 %s :+%s",user->nick,user->modes); return; } if ((dest) && (pcnt > 1)) { char dmodes[MAXBUF]; strncpy(dmodes,dest->modes,MAXBUF); log(DEBUG,"pulled up dest user modes: %s",dmodes); can_change = 0; if (user != dest) { if (strchr(user->modes,'o')) { can_change = 1; } } else { can_change = 1; } if (!can_change) { WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick); return; } strcpy(outpars,"+"); direction = 1; if ((parameters[1][0] != '+') && (parameters[1][0] != '-')) return; for (int i = 0; i < strlen(parameters[1]); i++) { if (parameters[1][i] == '+') { if (direction != 1) { if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-')) { outpars[strlen(outpars)-1] = '+'; } else { strcat(outpars,"+"); } } direction = 1; } else if (parameters[1][i] == '-') { if (direction != 0) { if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-')) { outpars[strlen(outpars)-1] = '-'; } else { strcat(outpars,"-"); } } direction = 0; } else { can_change = 0; if (strchr(user->modes,'o')) { can_change = 1; } else { if ((parameters[1][i] == 'i') || (parameters[1][i] == 'w') || (parameters[1][i] == 's') || (allowed_umode(parameters[1][i],user->modes,direction))) { can_change = 1; } } if (can_change) { if (direction == 1) { if ((!strchr(dmodes,parameters[1][i])) && (allowed_umode(parameters[1][i],user->modes,true))) { char umode = parameters[1][i]; if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o')) { dmodes[strlen(dmodes)+1]='\0'; dmodes[strlen(dmodes)] = parameters[1][i]; outpars[strlen(outpars)+1]='\0'; outpars[strlen(outpars)] = parameters[1][i]; } } } else { if ((allowed_umode(parameters[1][i],user->modes,false)) && (strchr(dmodes,parameters[1][i]))) { char umode = parameters[1][i]; if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o')) { int q = 0; char temp[MAXBUF]; char moo[MAXBUF]; outpars[strlen(outpars)+1]='\0'; outpars[strlen(outpars)] = parameters[1][i]; strcpy(temp,""); for (q = 0; q < strlen(dmodes); q++) { if (dmodes[q] != parameters[1][i]) { moo[0] = dmodes[q]; moo[1] = '\0'; strcat(temp,moo); } } strcpy(dmodes,temp); } } } } } } if (strlen(outpars)) { char b[MAXBUF]; strcpy(b,""); int z = 0; int i = 0; while (i < strlen (outpars)) { b[z++] = outpars[i++]; b[z] = '\0'; if (inick, b); // M token for a usermode must go to all servers char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"m %s %s %s",user->nick, dest->nick, b); NetSendToAll(buffer); if (strlen(dmodes)>MAXMODES) { dmodes[MAXMODES-1] = '\0'; } log(DEBUG,"Stripped mode line"); log(DEBUG,"Line dest is now %s",dmodes); strncpy(dest->modes,dmodes,MAXMODES); } return; } Ptr = FindChan(parameters[0]); if (Ptr) { if (pcnt == 1) { /* just /modes #channel */ WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name, chanmodes(Ptr)); WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created); return; } else if (pcnt == 2) { if ((!strcmp(parameters[1],"+b")) || (!strcmp(parameters[1],"b"))) { for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++) { WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, Ptr->name, i->data, i->set_by, i->set_time); } WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, Ptr->name); return; } } if ((cstatus(user,Ptr) < STATUS_HOP) && (Ptr)) { WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, Ptr->name); return; } process_modes(parameters,user,Ptr,cstatus(user,Ptr),pcnt,false,false,false); } else { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } void server_mode(char **parameters, int pcnt, userrec *user) { chanrec* Ptr; userrec* dest; int can_change,i; int direction = 1; char outpars[MAXBUF]; dest = Find(parameters[0]); // fix: ChroNiCk found this - we cant use this as debug if its null! if (dest) { log(DEBUG,"server_mode on %s",dest->nick); } if ((dest) && (pcnt > 1)) { log(DEBUG,"params > 1"); char dmodes[MAXBUF]; strncpy(dmodes,dest->modes,MAXBUF); strcpy(outpars,"+"); direction = 1; if ((parameters[1][0] != '+') && (parameters[1][0] != '-')) return; for (int i = 0; i < strlen(parameters[1]); i++) { if (parameters[1][i] == '+') { if (direction != 1) { if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-')) { outpars[strlen(outpars)-1] = '+'; } else { strcat(outpars,"+"); } } direction = 1; } else if (parameters[1][i] == '-') { if (direction != 0) { if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-')) { outpars[strlen(outpars)-1] = '-'; } else { strcat(outpars,"-"); } } direction = 0; } else { log(DEBUG,"begin mode processing entry"); can_change = 1; if (can_change) { if (direction == 1) { log(DEBUG,"umode %c being added",parameters[1][i]); if ((!strchr(dmodes,parameters[1][i])) && (allowed_umode(parameters[1][i],user->modes,true))) { char umode = parameters[1][i]; log(DEBUG,"umode %c is an allowed umode",umode); if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o')) { dmodes[strlen(dmodes)+1]='\0'; dmodes[strlen(dmodes)] = parameters[1][i]; outpars[strlen(outpars)+1]='\0'; outpars[strlen(outpars)] = parameters[1][i]; } } } else { // can only remove a mode they already have log(DEBUG,"umode %c being removed",parameters[1][i]); if ((allowed_umode(parameters[1][i],user->modes,false)) && (strchr(dmodes,parameters[1][i]))) { char umode = parameters[1][i]; log(DEBUG,"umode %c is an allowed umode",umode); if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o')) { int q = 0; char temp[MAXBUF]; char moo[MAXBUF]; outpars[strlen(outpars)+1]='\0'; outpars[strlen(outpars)] = parameters[1][i]; strcpy(temp,""); for (q = 0; q < strlen(dmodes); q++) { if (dmodes[q] != parameters[1][i]) { moo[0] = dmodes[q]; moo[1] = '\0'; strcat(temp,moo); } } strcpy(dmodes,temp); } } } } } } if (strlen(outpars)) { char b[MAXBUF]; strcpy(b,""); int z = 0; int i = 0; while (i < strlen (outpars)) { b[z++] = outpars[i++]; b[z] = '\0'; if (inick, b); // M token for a usermode must go to all servers char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"m %s %s %s",user->nick, dest->nick, b); NetSendToAll(buffer); if (strlen(dmodes)>MAXMODES) { dmodes[MAXMODES-1] = '\0'; } log(DEBUG,"Stripped mode line"); log(DEBUG,"Line dest is now %s",dmodes); strncpy(dest->modes,dmodes,MAXMODES); } return; } Ptr = FindChan(parameters[0]); if (Ptr) { process_modes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false); } else { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } void merge_mode(char **parameters, int pcnt) { chanrec* Ptr; userrec* dest; int can_change,i; int direction = 1; char outpars[MAXBUF]; dest = Find(parameters[0]); // fix: ChroNiCk found this - we cant use this as debug if its null! if (dest) { log(DEBUG,"merge_mode on %s",dest->nick); } if ((dest) && (pcnt > 1)) { log(DEBUG,"params > 1"); char dmodes[MAXBUF]; strncpy(dmodes,dest->modes,MAXBUF); strcpy(outpars,"+"); direction = 1; if ((parameters[1][0] != '+') && (parameters[1][0] != '-')) return; for (int i = 0; i < strlen(parameters[1]); i++) { if (parameters[1][i] == '+') { if (direction != 1) { if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-')) { outpars[strlen(outpars)-1] = '+'; } else { strcat(outpars,"+"); } } direction = 1; } else if (parameters[1][i] == '-') { if (direction != 0) { if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-')) { outpars[strlen(outpars)-1] = '-'; } else { strcat(outpars,"-"); } } direction = 0; } else { log(DEBUG,"begin mode processing entry"); can_change = 1; if (can_change) { if (direction == 1) { log(DEBUG,"umode %c being added",parameters[1][i]); if ((!strchr(dmodes,parameters[1][i])) && (allowed_umode(parameters[1][i],"o",true))) { char umode = parameters[1][i]; log(DEBUG,"umode %c is an allowed umode",umode); if ((process_module_umode(umode, NULL, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o')) { dmodes[strlen(dmodes)+1]='\0'; dmodes[strlen(dmodes)] = parameters[1][i]; outpars[strlen(outpars)+1]='\0'; outpars[strlen(outpars)] = parameters[1][i]; } } } else { // can only remove a mode they already have log(DEBUG,"umode %c being removed",parameters[1][i]); if ((allowed_umode(parameters[1][i],"o",false)) && (strchr(dmodes,parameters[1][i]))) { char umode = parameters[1][i]; log(DEBUG,"umode %c is an allowed umode",umode); if ((process_module_umode(umode, NULL, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o')) { int q = 0; char temp[MAXBUF]; char moo[MAXBUF]; outpars[strlen(outpars)+1]='\0'; outpars[strlen(outpars)] = parameters[1][i]; strcpy(temp,""); for (q = 0; q < strlen(dmodes); q++) { if (dmodes[q] != parameters[1][i]) { moo[0] = dmodes[q]; moo[1] = '\0'; strcat(temp,moo); } } strcpy(dmodes,temp); } } } } } } if (strlen(outpars)) { char b[MAXBUF]; strcpy(b,""); int z = 0; int i = 0; while (i < strlen (outpars)) { b[z++] = outpars[i++]; b[z] = '\0'; if (iMAXMODES) { dmodes[MAXMODES-1] = '\0'; } log(DEBUG,"Stripped mode line"); log(DEBUG,"Line dest is now %s",dmodes); strncpy(dest->modes,dmodes,MAXMODES); } return; } Ptr = FindChan(parameters[0]); if (Ptr) { userrec s2; strncpy(s2.nick,ServerName,NICKMAX); strcpy(s2.modes,"o"); s2.fd = -1; process_modes(parameters,&s2,Ptr,STATUS_OP,pcnt,true,true,false); } } void merge_mode2(char **parameters, int pcnt, userrec* user) { chanrec* Ptr; userrec* dest; int can_change,i; int direction = 1; char outpars[MAXBUF]; dest = Find(parameters[0]); // fix: ChroNiCk found this - we cant use this as debug if its null! if (dest) { log(DEBUG,"merge_mode on %s",dest->nick); } if ((dest) && (pcnt > 1)) { log(DEBUG,"params > 1"); char dmodes[MAXBUF]; strncpy(dmodes,dest->modes,MAXBUF); strcpy(outpars,"+"); direction = 1; if ((parameters[1][0] != '+') && (parameters[1][0] != '-')) return; for (int i = 0; i < strlen(parameters[1]); i++) { if (parameters[1][i] == '+') { if (direction != 1) { if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-')) { outpars[strlen(outpars)-1] = '+'; } else { strcat(outpars,"+"); } } direction = 1; } else if (parameters[1][i] == '-') { if (direction != 0) { if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-')) { outpars[strlen(outpars)-1] = '-'; } else { strcat(outpars,"-"); } } direction = 0; } else { log(DEBUG,"begin mode processing entry"); can_change = 1; if (can_change) { if (direction == 1) { log(DEBUG,"umode %c being added",parameters[1][i]); if ((!strchr(dmodes,parameters[1][i])) && (allowed_umode(parameters[1][i],user->modes,true))) { char umode = parameters[1][i]; log(DEBUG,"umode %c is an allowed umode",umode); if ((process_module_umode(umode, NULL, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o')) { dmodes[strlen(dmodes)+1]='\0'; dmodes[strlen(dmodes)] = parameters[1][i]; outpars[strlen(outpars)+1]='\0'; outpars[strlen(outpars)] = parameters[1][i]; } } } else { // can only remove a mode they already have log(DEBUG,"umode %c being removed",parameters[1][i]); if ((allowed_umode(parameters[1][i],user->modes,false)) && (strchr(dmodes,parameters[1][i]))) { char umode = parameters[1][i]; log(DEBUG,"umode %c is an allowed umode",umode); if ((process_module_umode(umode, NULL, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o')) { int q = 0; char temp[MAXBUF]; char moo[MAXBUF]; outpars[strlen(outpars)+1]='\0'; outpars[strlen(outpars)] = parameters[1][i]; strcpy(temp,""); for (q = 0; q < strlen(dmodes); q++) { if (dmodes[q] != parameters[1][i]) { moo[0] = dmodes[q]; moo[1] = '\0'; strcat(temp,moo); } } strcpy(dmodes,temp); } } } } } } if (strlen(outpars)) { char b[MAXBUF]; strcpy(b,""); int z = 0; int i = 0; while (i < strlen (outpars)) { b[z++] = outpars[i++]; b[z] = '\0'; if (iMAXMODES) { dmodes[MAXMODES-1] = '\0'; } log(DEBUG,"Stripped mode line"); log(DEBUG,"Line dest is now %s",dmodes); strncpy(dest->modes,dmodes,MAXMODES); } return; } Ptr = FindChan(parameters[0]); if (Ptr) { if ((cstatus(user,Ptr) < STATUS_HOP) && (Ptr)) { return; } process_modes(parameters,user,Ptr,cstatus(user,Ptr),pcnt,false,false,true); } } /* This function pokes and hacks at a parameter list like the following: * * PART #winbot, #darkgalaxy :m00! * * to turn it into a series of individual calls like this: * * PART #winbot :m00! * PART #darkgalaxy :m00! * * The seperate calls are sent to a callback function provided by the caller * (the caller will usually call itself recursively). The callback function * must be a command handler. Calling this function on a line with no list causes * no action to be taken. You must provide a starting and ending parameter number * where the range of the list can be found, useful if you have a terminating * parameter as above which is actually not part of the list, or parameters * before the actual list as well. This code is used by many functions which * can function as "one to list" (see the RFC) */ int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins) { char plist[MAXBUF]; char *param; char *pars[32]; char blog[32][MAXBUF]; char blog2[32][MAXBUF]; int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0; char keystr[MAXBUF]; char moo[MAXBUF]; for (int i = 0; i <32; i++) strcpy(blog[i],""); for (int i = 0; i <32; i++) strcpy(blog2[i],""); strcpy(moo,""); for (int i = 0; i <10; i++) { if (!parameters[i]) { parameters[i] = moo; } } if (joins) { if (pcnt > 1) /* we have a key to copy */ { strcpy(keystr,parameters[1]); } } if (!parameters[start]) { return 0; } if (!strchr(parameters[start],',')) { return 0; } strcpy(plist,""); for (int i = start; i <= end; i++) { if (parameters[i]) { strcat(plist,parameters[i]); } } j = 0; param = plist; t = strlen(plist); for (int i = 0; i < t; i++) { if (plist[i] == ',') { plist[i] = '\0'; strcpy(blog[j++],param); param = plist+i+1; if (j>20) { WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]); return 1; } } } strcpy(blog[j++],param); total = j; if ((joins) && (keystr) && (total>0)) // more than one channel and is joining { strcat(keystr,","); } if ((joins) && (keystr)) { if (strchr(keystr,',')) { j = 0; param = keystr; t2 = strlen(keystr); for (int i = 0; i < t2; i++) { if (keystr[i] == ',') { keystr[i] = '\0'; strcpy(blog2[j++],param); param = keystr+i+1; } } strcpy(blog2[j++],param); total2 = j; } } for (j = 0; j < total; j++) { if (blog[j]) { pars[0] = blog[j]; } for (q = end; q < pcnt-1; q++) { if (parameters[q+1]) { pars[q-end+1] = parameters[q+1]; } } if ((joins) && (parameters[1])) { if (pcnt > 1) { pars[1] = blog2[j]; } else { pars[1] = NULL; } } /* repeatedly call the function with the hacked parameter list */ if ((joins) && (pcnt > 1)) { if (pars[1]) { // pars[1] already set up and containing key from blog2[j] fn(pars,2,u); } else { pars[1] = parameters[1]; fn(pars,2,u); } } else { fn(pars,pcnt-(end-start),u); } } return 1; } void handle_join(char **parameters, int pcnt, userrec *user) { chanrec* Ptr; int i = 0; if (loop_call(handle_join,parameters,pcnt,user,0,0,1)) return; if (parameters[0][0] == '#') { Ptr = add_channel(user,parameters[0],parameters[1],false); } } void handle_part(char **parameters, int pcnt, userrec *user) { chanrec* Ptr; if (pcnt > 1) { if (loop_call(handle_part,parameters,pcnt,user,0,pcnt-2,0)) return; del_channel(user,parameters[0],parameters[1],false); } else { if (loop_call(handle_part,parameters,pcnt,user,0,pcnt-1,0)) return; del_channel(user,parameters[0],NULL,false); } } void handle_kick(char **parameters, int pcnt, userrec *user) { chanrec* Ptr = FindChan(parameters[0]); userrec* u = Find(parameters[1]); if ((!u) || (!Ptr)) { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); return; } if (!has_channel(u,Ptr)) { WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, parameters[0]); return; } char reason[MAXBUF]; if (pcnt > 2) { strncpy(reason,parameters[2],MAXBUF); if (strlen(reason)>MAXKICK) { reason[MAXKICK-1] = '\0'; } kick_channel(user,u,Ptr,reason); } else { strcpy(reason,user->nick); kick_channel(user,u,Ptr,reason); } // this must be propogated so that channel membership is kept in step network-wide char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"k %s %s %s :%s",user->nick,u->nick,Ptr->name,reason); NetSendToAll(buffer); } void handle_die(char **parameters, int pcnt, userrec *user) { log(DEBUG,"die: %s",user->nick); if (!strcmp(parameters[0],diepass)) { WriteOpers("*** DIE command from %s!%s@%s, terminating...",user->nick,user->ident,user->host); sleep(DieDelay); Exit(ERROR); } else { WriteOpers("*** Failed DIE Command from %s!%s@%s.",user->nick,user->ident,user->host); } } void handle_restart(char **parameters, int pcnt, userrec *user) { log(DEBUG,"restart: %s",user->nick); if (!strcmp(parameters[0],restartpass)) { WriteOpers("*** RESTART command from %s!%s@%s, Pretending to restart till this is finished :D",user->nick,user->ident,user->host); sleep(DieDelay); Exit(ERROR); /* Will finish this later when i can be arsed :) */ } else { WriteOpers("*** Failed RESTART Command from %s!%s@%s.",user->nick,user->ident,user->host); } } 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 %d",user->fd); /* bugfix, cant close() a nonblocking socket (sux!) */ if (user->registered == 7) { FOREACH_MOD OnUserQuit(user); WriteCommonExcept(user,"QUIT :%s",reason); // Q token must go to ALL servers!!! char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason); NetSendToAll(buffer); } /* push the socket on a stack of sockets due to be closed at the next opportunity * 'Client exited' is an exception to this as it means the client side has already * closed the socket, we don't need to do it. */ fd_reap.push_back(user->fd); bool do_purge = false; if (user->registered == 7) { 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 %d",iter->second); if ((iter->second) && (user->registered == 7)) { delete iter->second; } clientlist.erase(iter); } if (user->registered == 7) { purge_empty_chans(); } } void handle_kill(char **parameters, int pcnt, userrec *user) { userrec *u = Find(parameters[0]); char killreason[MAXBUF]; log(DEBUG,"kill: %s %s",parameters[0],parameters[1]); if (u) { if (strcmp(ServerName,u->server)) { // remote kill WriteOpers("*** Remote kill by %s: %s!%s@%s (%s)",user->nick,u->nick,u->ident,u->host,parameters[1]); sprintf(killreason,"[%s] Killed (%s (%s))",ServerName,user->nick,parameters[1]); WriteCommonExcept(u,"QUIT :%s",killreason); // K token must go to ALL servers!!! char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"K %s %s :%s",user->nick,u->nick,killreason); NetSendToAll(buffer); user_hash::iterator iter = clientlist.find(u->nick); if (iter != clientlist.end()) { log(DEBUG,"deleting user hash value %d",iter->second); if ((iter->second) && (user->registered == 7)) { delete iter->second; } clientlist.erase(iter); } purge_empty_chans(); } else { // local kill WriteTo(user, u, "KILL %s :%s!%s!%s (%s)", u->nick, ServerName,user->dhost,user->nick,parameters[1]); WriteOpers("*** Local Kill by %s: %s!%s@%s (%s)",user->nick,u->nick,u->ident,u->host,parameters[1]); sprintf(killreason,"Killed (%s (%s))",user->nick,parameters[1]); kill_link(u,killreason); } } else { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } void handle_summon(char **parameters, int pcnt, userrec *user) { WriteServ(user->fd,"445 %s :SUMMON has been disabled (depreciated command)",user->nick); } void handle_users(char **parameters, int pcnt, userrec *user) { WriteServ(user->fd,"445 %s :USERS has been disabled (depreciated command)",user->nick); } // looks up a users password for their connection class (/ tags) char* Passwd(userrec *user) { for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++) { if (match(user->host,i->host) && (i->type == CC_ALLOW)) { return i->pass; } } return ""; } bool IsDenied(userrec *user) { for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++) { if (match(user->host,i->host) && (i->type == CC_DENY)) { return true; } } return false; } void handle_pass(char **parameters, int pcnt, userrec *user) { // Check to make sure they havnt registered -- Fix by FCS if (user->registered == 7) { WriteServ(user->fd,"462 %s :You may not reregister",user->nick); return; } if (!strcasecmp(parameters[0],Passwd(user))) { user->haspassed = true; } } void handle_invite(char **parameters, int pcnt, userrec *user) { userrec* u = Find(parameters[0]); chanrec* c = FindChan(parameters[1]); if ((!c) || (!u)) { if (!c) { WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[1]); } else { if (c->inviteonly) { WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]); } } return; } if (c->inviteonly) { if (cstatus(user,c) < STATUS_HOP) { WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, c->name); return; } } if (has_channel(u,c)) { WriteServ(user->fd,"443 %s %s %s :Is already on channel %s",user->nick,u->nick,c->name,c->name); return; } if (!has_channel(user,c)) { WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, c->name); return; } u->InviteTo(c->name); WriteFrom(u->fd,user,"INVITE %s :%s",u->nick,c->name); WriteServ(user->fd,"341 %s %s %s",user->nick,u->nick,c->name); // i token must go to ALL servers!!! char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"i %s %s %s",u->nick,user->nick,c->name); NetSendToAll(buffer); } void handle_topic(char **parameters, int pcnt, userrec *user) { chanrec* Ptr; if (pcnt == 1) { if (strlen(parameters[0]) <= CHANMAX) { Ptr = FindChan(parameters[0]); if (Ptr) { if (Ptr->topicset) { WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic); WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset); } else { WriteServ(user->fd,"331 %s %s :No topic is set.", user->nick, Ptr->name); } } else { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } return; } else if (pcnt>1) { if (strlen(parameters[0]) <= CHANMAX) { Ptr = FindChan(parameters[0]); if (Ptr) { if ((Ptr->topiclock) && (cstatus(user,Ptr)fd,"482 %s %s :You must be at least a half-operator to change modes on this channel", user->nick, Ptr->name); return; } char topic[MAXBUF]; strncpy(topic,parameters[1],MAXBUF); if (strlen(topic)>MAXTOPIC) { topic[MAXTOPIC-1] = '\0'; } strcpy(Ptr->topic,topic); strcpy(Ptr->setby,user->nick); Ptr->topicset = time(NULL); WriteChannel(Ptr,user,"TOPIC %s :%s",Ptr->name, Ptr->topic); // t token must go to ALL servers!!! char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"t %s %s :%s",user->nick,Ptr->name,topic); NetSendToAll(buffer); } else { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } } } /* sends out an error notice to all connected clients (not to be used * lightly!) */ 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); } } } void Error(int status) { 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(DEBUG,"*** fell down a pothole in the road to perfection ***"); send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*"); exit(status); } int main(int argc, char *argv[]) { Start(); srand(time(NULL)); log(DEBUG,"*** InspIRCd starting up!"); if (!FileExists(CONFIG_FILE)) { printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE); log(DEBUG,"main: no config"); printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n"); Exit(ERROR); } if (argc > 1) { if (!strcmp(argv[1],"-nofork")) { nofork = true; } } if (InspIRCd() == ERROR) { log(DEBUG,"main: daemon function bailed"); printf("ERROR: could not initialise. Shutting down.\n"); Exit(ERROR); } Exit(TRUE); return 0; } template inline string ConvToStr(const T &in) { stringstream tmp; if (!(tmp << in)) return string(); return tmp.str(); } /* 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); clientlist[New] = new userrec(); clientlist[New] = oldnick->second; /*delete oldnick->second; */ clientlist.erase(oldnick); log(DEBUG,"ReHashNick: Nick rehashed as %s",New); return clientlist[New]; } /* adds or updates an entry in the whowas list */ void AddWhoWas(userrec* u) { user_hash::iterator iter = whowas.find(u->nick); userrec *a = new userrec(); strcpy(a->nick,u->nick); strcpy(a->ident,u->ident); strcpy(a->dhost,u->dhost); strcpy(a->host,u->host); strcpy(a->fullname,u->fullname); strcpy(a->server,u->server); 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() == WHOWAS_MAX) { for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++) { // 3600 seconds in an hour ;) if ((i->second->signon)<(time(NULL)-(WHOWAS_STALE*3600))) { delete i->second; i->second = a; log(DEBUG,"added WHOWAS entry, purged an old record"); return; } } } else { log(DEBUG,"added fresh WHOWAS entry"); whowas[a->nick] = a; } } else { log(DEBUG,"updated WHOWAS entry"); delete iter->second; iter->second = a; } } /* add a client connection to the sockets list */ void AddClient(int socket, char* host, int port, bool iscached) { int i; int blocking = 1; char resolved[MAXBUF]; string tempnick; char tn2[MAXBUF]; user_hash::iterator iter; tempnick = ConvToStr(socket) + "-unknown"; sprintf(tn2,"%d-unknown",socket); iter = clientlist.find(tempnick); if (iter != clientlist.end()) return; /* * 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: %d %s %d",socket,host,port); clientlist[tempnick]->fd = socket; strncpy(clientlist[tempnick]->nick, tn2,NICKMAX); strncpy(clientlist[tempnick]->host, host,160); strncpy(clientlist[tempnick]->dhost, host,160); strncpy(clientlist[tempnick]->server, ServerName,256); strncpy(clientlist[tempnick]->ident, "unknown",9); clientlist[tempnick]->registered = 0; clientlist[tempnick]->signon = time(NULL); clientlist[tempnick]->nping = time(NULL)+240; clientlist[tempnick]->lastping = 1; clientlist[tempnick]->port = port; if (iscached) { WriteServ(socket,"NOTICE Auth :Found your hostname (cached)..."); } else { WriteServ(socket,"NOTICE Auth :Looking up your hostname..."); } // set the registration timeout for this user unsigned long class_regtimeout = 90; for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++) { if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW)) { class_regtimeout = (unsigned long)i->registration_timeout; break; } } int class_flood = 0; for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++) { if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW)) { class_flood = i->flood; break; } } clientlist[tempnick]->timeout = time(NULL)+class_regtimeout; clientlist[tempnick]->flood = class_flood; for (int i = 0; i < MAXCHANS; i++) { clientlist[tempnick]->chans[i].channel = NULL; clientlist[tempnick]->chans[i].uc_modes = 0; } if (clientlist.size() == MAXCLIENTS) kill_link(clientlist[tempnick],"No more connections allowed in this class"); } void handle_names(char **parameters, int pcnt, userrec *user) { chanrec* c; if (loop_call(handle_names,parameters,pcnt,user,0,pcnt-1,0)) return; c = FindChan(parameters[0]); if (c) { /*WriteServ(user->fd,"353 %s = %s :%s", user->nick, c->name,*/ userlist(user,c); WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, c->name); } else { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } void handle_privmsg(char **parameters, int pcnt, userrec *user) { userrec *dest; chanrec *chan; user->idle_lastmsg = time(NULL); if (loop_call(handle_privmsg,parameters,pcnt,user,0,pcnt-2,0)) return; if (parameters[0][0] == '#') { chan = FindChan(parameters[0]); if (chan) { if ((chan->noexternal) && (!has_channel(user,chan))) { WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name); return; } if ((chan->moderated) && (cstatus(user,chan)fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name); return; } int MOD_RESULT = 0; FOREACH_RESULT(OnUserPreMessage(user,chan,TYPE_CHANNEL,std::string(parameters[1]))); if (MOD_RESULT) { return; } ChanExceptSender(chan, user, "PRIVMSG %s :%s", chan->name, parameters[1]); // if any users of this channel are on remote servers, broadcast the packet char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"P %s %s :%s",user->nick,chan->name,parameters[1]); NetSendToCommon(user,buffer); } else { /* no such nick/channel */ WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } return; } dest = Find(parameters[0]); if (dest) { if (strcmp(dest->awaymsg,"")) { /* auto respond with aweh msg */ WriteServ(user->fd,"301 %s %s :%s",user->nick,dest->nick,dest->awaymsg); } int MOD_RESULT = 0; FOREACH_RESULT(OnUserPreMessage(user,dest,TYPE_USER,std::string(parameters[1]))); if (MOD_RESULT) { return; } if (!strcmp(dest->server,user->server)) { // direct write, same server WriteTo(user, dest, "PRIVMSG %s :%s", dest->nick, parameters[1]); } else { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"P %s %s :%s",user->nick,dest->nick,parameters[1]); NetSendToOne(dest->server,buffer); } } else { /* no such nick/channel */ WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } void handle_notice(char **parameters, int pcnt, userrec *user) { userrec *dest; chanrec *chan; user->idle_lastmsg = time(NULL); if (loop_call(handle_notice,parameters,pcnt,user,0,pcnt-2,0)) return; if (parameters[0][0] == '#') { chan = FindChan(parameters[0]); if (chan) { if ((chan->noexternal) && (!has_channel(user,chan))) { WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name); return; } if ((chan->moderated) && (cstatus(user,chan)fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name); return; } int MOD_RESULT = 0; FOREACH_RESULT(OnUserPreNotice(user,chan,TYPE_CHANNEL,std::string(parameters[1]))); if (MOD_RESULT) { return; } ChanExceptSender(chan, user, "NOTICE %s :%s", chan->name, parameters[1]); // if any users of this channel are on remote servers, broadcast the packet char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"V %s %s :%s",user->nick,chan->name,parameters[1]); NetSendToCommon(user,buffer); } else { /* no such nick/channel */ WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } return; } dest = Find(parameters[0]); if (dest) { int MOD_RESULT = 0; FOREACH_RESULT(OnUserPreNotice(user,dest,TYPE_USER,std::string(parameters[1]))); if (MOD_RESULT) { return; } if (!strcmp(dest->server,user->server)) { // direct write, same server WriteTo(user, dest, "NOTICE %s :%s", dest->nick, parameters[1]); } else { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"V %s %s :%s",user->nick,dest->nick,parameters[1]); NetSendToOne(dest->server,buffer); } } else { /* no such nick/channel */ WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } char lst[MAXBUF]; char* chlist(userrec *user) { int i = 0; char cmp[MAXBUF]; log(DEBUG,"chlist: %s",user->nick); strcpy(lst,""); if (!user) { return lst; } for (int i = 0; i != MAXCHANS; i++) { if (user->chans[i].channel != NULL) { if (user->chans[i].channel->name) { strcpy(cmp,user->chans[i].channel->name); strcat(cmp," "); if (!strstr(lst,cmp)) { if ((!user->chans[i].channel->c_private) && (!user->chans[i].channel->secret)) { strcat(lst,cmode(user,user->chans[i].channel)); strcat(lst,user->chans[i].channel->name); strcat(lst," "); } } } } } if (strlen(lst)) { lst[strlen(lst)-1] = '\0'; // chop trailing space } return lst; } void handle_info(char **parameters, int pcnt, userrec *user) { WriteServ(user->fd,"371 %s :The Inspire IRCd Project Has been brought to you by the following people..",user->nick); WriteServ(user->fd,"371 %s :Craig Edwards, Craig McLure, and Others..",user->nick); WriteServ(user->fd,"371 %s :Will finish this later when i can be arsed :p",user->nick); FOREACH_MOD OnInfo(user); WriteServ(user->fd,"374 %s :End of /INFO list",user->nick); } void handle_time(char **parameters, int pcnt, userrec *user) { time_t rawtime; struct tm * timeinfo; time ( &rawtime ); timeinfo = localtime ( &rawtime ); WriteServ(user->fd,"391 %s %s :%s",user->nick,ServerName, asctime (timeinfo) ); } void handle_whois(char **parameters, int pcnt, userrec *user) { userrec *dest; char *t; if (loop_call(handle_whois,parameters,pcnt,user,0,pcnt-1,0)) return; dest = Find(parameters[0]); if (dest) { // bug found by phidjit - were able to whois an incomplete connection if it had sent a NICK or USER if (dest->registered == 7) { WriteServ(user->fd,"311 %s %s %s %s * :%s",user->nick, dest->nick, dest->ident, dest->dhost, dest->fullname); if ((user == dest) || (strchr(user->modes,'o'))) { WriteServ(user->fd,"378 %s %s :is connecting from *@%s",user->nick, dest->nick, dest->host); } if (strcmp(chlist(dest),"")) { WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, chlist(dest)); } WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, dest->server, GetServerDescription(dest->server).c_str()); if (strcmp(dest->awaymsg,"")) { WriteServ(user->fd,"301 %s %s :%s",user->nick, dest->nick, dest->awaymsg); } if (strchr(dest->modes,'o')) { WriteServ(user->fd,"313 %s %s :is an IRC operator",user->nick, dest->nick); } FOREACH_MOD OnWhois(user,dest); if (!strcasecmp(user->server,dest->server)) { // idle time and signon line can only be sent if youre on the same server (according to RFC) WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, abs((dest->idle_lastmsg)-time(NULL)), dest->signon); } WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, dest->nick); } else { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } else { /* no such nick/channel */ WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } void send_network_quit(const char* nick, const char* reason) { char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"Q %s :%s",nick,reason); NetSendToAll(buffer); } void handle_quit(char **parameters, int pcnt, userrec *user) { user_hash::iterator iter = clientlist.find(user->nick); char* reason; if (user->registered == 7) { /* theres more to do here, but for now just close the socket */ if (pcnt == 1) { if (parameters[0][0] == ':') { *parameters[0]++; } reason = parameters[0]; if (strlen(reason)>MAXQUIT) { reason[MAXQUIT-1] = '\0'; } Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,parameters[0]); WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,parameters[0]); WriteCommonExcept(user,"QUIT :%s%s",PrefixQuit,parameters[0]); char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"Q %s :%s%s",user->nick,PrefixQuit,parameters[0]); NetSendToAll(buffer); } else { Write(user->fd,"ERROR :Closing link (%s@%s) [QUIT]",user->ident,user->host); WriteOpers("*** Client exiting: %s!%s@%s [Client exited]",user->nick,user->ident,user->host); WriteCommonExcept(user,"QUIT :Client exited"); char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"Q %s :Client exited",user->nick); NetSendToAll(buffer); } FOREACH_MOD OnUserQuit(user); AddWhoWas(user); } /* push the socket on a stack of sockets due to be closed at the next opportunity */ fd_reap.push_back(user->fd); if (iter != clientlist.end()) { clientlist.erase(iter); log(DEBUG,"deleting user hash value %d",iter->second); //if ((user) && (user->registered == 7)) { //delete user; //} } if (user->registered == 7) { purge_empty_chans(); } } void handle_who(char **parameters, int pcnt, userrec *user) { chanrec* Ptr = NULL; /* theres more to do here, but for now just close the socket */ if (pcnt == 1) { if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*"))) { if (user->chans[0].channel) { Ptr = user->chans[0].channel; for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if ((common_channels(user,i->second)) && (isnick(i->second->nick))) { WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, Ptr->name, i->second->ident, i->second->dhost, i->second->server, i->second->nick, i->second->fullname); } } } if (Ptr) { WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name); } else { WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, user->nick); } return; } if (parameters[0][0] == '#') { Ptr = FindChan(parameters[0]); if (Ptr) { for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if ((has_channel(i->second,Ptr)) && (isnick(i->second->nick))) { WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, Ptr->name, i->second->ident, i->second->dhost, i->second->server, i->second->nick, i->second->fullname); } } WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name); } else { WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]); } } else { userrec* u = Find(parameters[0]); WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, u->nick, u->ident, u->dhost, u->server, u->nick, u->fullname); } } if (pcnt == 2) { if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*")) && (!strcmp(parameters[1],"o"))) { Ptr = user->chans[0].channel; for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++) { if ((common_channels(user,i->second)) && (isnick(i->second->nick))) { if (strchr(i->second->modes,'o')) { WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, Ptr->name, i->second->ident, i->second->dhost, i->second->server, i->second->nick, i->second->fullname); } } } WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name); return; } } } void handle_wallops(char **parameters, int pcnt, userrec *user) { WriteWallOps(user,false,"%s",parameters[0]); } void handle_list(char **parameters, int pcnt, userrec *user) { chanrec* Ptr; WriteServ(user->fd,"321 %s Channel :Users Name",user->nick); for (chan_hash::const_iterator i = chanlist.begin(); i != chanlist.end(); i++) { if ((!i->second->c_private) && (!i->second->secret)) { WriteServ(user->fd,"322 %s %s %d :[+%s] %s",user->nick,i->second->name,usercount_i(i->second),chanmodes(i->second),i->second->topic); } } WriteServ(user->fd,"323 %s :End of channel list.",user->nick); } void handle_rehash(char **parameters, int pcnt, userrec *user) { WriteServ(user->fd,"382 %s %s :Rehashing",user->nick,CleanFilename(CONFIG_FILE)); ReadConfig(); FOREACH_MOD OnRehash(); WriteOpers("%s is rehashing config file %s",user->nick,CleanFilename(CONFIG_FILE)); } int usercnt(void) { return clientlist.size(); } int usercount_invisible(void) { int c = 0; 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; } int usercount_opers(void) { int c = 0; 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; } 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; } long chancount(void) { return chanlist.size(); } long count_servs(void) { int c = 0; //for (int j = 0; j < 255; j++) //{ // if (servers[j] != NULL) // c++; //} return c; } long servercount(void) { return count_servs()+1; } long local_count() { 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; } void handle_lusers(char **parameters, int pcnt, userrec *user) { WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,usercnt()-usercount_invisible(),usercount_invisible(),servercount()); WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers()); WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown()); WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount()); WriteServ(user->fd,"254 %s :I have %d clients and %d servers",user->nick,local_count(),count_servs()); } void handle_admin(char **parameters, int pcnt, userrec *user) { WriteServ(user->fd,"256 %s :Administrative info for %s",user->nick,ServerName); WriteServ(user->fd,"257 %s :Name - %s",user->nick,AdminName); WriteServ(user->fd,"258 %s :Nickname - %s",user->nick,AdminNick); WriteServ(user->fd,"258 %s :E-Mail - %s",user->nick,AdminEmail); } void ShowMOTD(userrec *user) { if (!MOTD.size()) { WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick); return; } WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName); for (int i = 0; i != MOTD.size(); i++) { WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str()); } WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName); } 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 (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); } /* shows the message of the day, and any other on-logon stuff */ void ConnectUser(userrec *user) { user->registered = 7; user->idle_lastmsg = time(NULL); 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; } WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network); WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host); WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,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,ServerName,VERSION); WriteServ(user->fd,"005 %s :MAP KNOCK SAFELIST HCN MAXCHANNELS=20 MAXBANS=60 NICKLEN=30 TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 :are supported by this server",user->nick); WriteServ(user->fd,"005 %s :WALLCHOPS WATCH=128 SILENCE=5 MODES=13 CHANTYPES=# PREFIX=(ohv)@%c+ CHANMODES=ohvbeqa,kfL,l,psmntirRcOAQKVHGCuzN NETWORK=%s :are supported by this server",user->nick,'%',Network); ShowMOTD(user); FOREACH_MOD OnUserConnect(user); WriteOpers("*** Client connecting on port %d: %s!%s@%s",user->port,user->nick,user->ident,user->host); char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"N %d %s %s %s %s +%s %s :%s",user->age,user->nick,user->host,user->dhost,user->ident,user->modes,ServerName,user->fullname); NetSendToAll(buffer); } void handle_version(char **parameters, int pcnt, userrec *user) { char Revision[] = "$Revision$"; char *s1 = Revision; char *savept; char *v1 = strtok_r(s1," ",&savept); s1 = savept; char *v2 = strtok_r(s1," ",&savept); s1 = savept; WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION); } void handle_ping(char **parameters, int pcnt, userrec *user) { WriteServ(user->fd,"PONG %s :%s",ServerName,parameters[0]); } void handle_pong(char **parameters, int pcnt, userrec *user) { // set the user as alive so they survive to next ping user->lastping = 1; } void handle_motd(char **parameters, int pcnt, userrec *user) { ShowMOTD(user); } void handle_rules(char **parameters, int pcnt, userrec *user) { ShowRULES(user); } void handle_user(char **parameters, int pcnt, userrec *user) { if (user->registered < 3) { if (isident(parameters[0]) == 0) { // This kinda Sucks, According to the RFC thou, its either this, // or "You have already registered" :p -- Craig WriteServ(user->fd,"461 %s USER :Not enough parameters",user->nick); } else { WriteServ(user->fd,"NOTICE Auth :No ident response, ident prefixed with ~"); strcpy(user->ident,"~"); /* we arent checking ident... but these days why bother anyway? */ strncat(user->ident,parameters[0],IDENTMAX); strncpy(user->fullname,parameters[3],128); user->registered = (user->registered | 1); } } else { WriteServ(user->fd,"462 %s :You may not reregister",user->nick); return; } /* parameters 2 and 3 are local and remote hosts, ignored when sent by client connection */ if (user->registered == 3) { /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */ ConnectUser(user); } } void handle_userhost(char **parameters, int pcnt, userrec *user) { char Return[MAXBUF],junk[MAXBUF]; sprintf(Return,"302 %s :",user->nick); for (int i = 0; i < pcnt; i++) { userrec *u = Find(parameters[i]); if (u) { if (strchr(u->modes,'o')) { sprintf(junk,"%s*=+%s@%s ",u->nick,u->ident,u->host); strcat(Return,junk); } else { sprintf(junk,"%s=+%s@%s ",u->nick,u->ident,u->host); strcat(Return,junk); } } } WriteServ(user->fd,Return); } void handle_ison(char **parameters, int pcnt, userrec *user) { char Return[MAXBUF]; sprintf(Return,"303 %s :",user->nick); for (int i = 0; i < pcnt; i++) { userrec *u = Find(parameters[i]); if (u) { strcat(Return,u->nick); strcat(Return," "); } } WriteServ(user->fd,Return); } void handle_away(char **parameters, int pcnt, userrec *user) { if (pcnt) { strcpy(user->awaymsg,parameters[0]); WriteServ(user->fd,"306 %s :You have been marked as being away",user->nick); } else { strcpy(user->awaymsg,""); WriteServ(user->fd,"305 %s :You are no longer marked as being away",user->nick); } } void handle_whowas(char **parameters, int pcnt, userrec* user) { user_hash::iterator i = whowas.find(parameters[0]); if (i == whowas.end()) { WriteServ(user->fd,"406 %s %s :There was no such nickname",user->nick,parameters[0]); WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]); } else { time_t rawtime = i->second->signon; tm *timeinfo; char b[MAXBUF]; timeinfo = localtime(&rawtime); strcpy(b,asctime(timeinfo)); b[strlen(b)-1] = '\0'; WriteServ(user->fd,"314 %s %s %s %s * :%s",user->nick,i->second->nick,i->second->ident,i->second->dhost,i->second->fullname); WriteServ(user->fd,"312 %s %s %s :%s",user->nick,i->second->nick,i->second->server,b); WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]); } } void handle_trace(char **parameters, int pcnt, userrec *user) { for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (i->second) { if (isnick(i->second->nick)) { if (strchr(i->second->modes,'o')) { WriteServ(user->fd,"205 %s :Oper 0 %s",user->nick,i->second->nick); } else { WriteServ(user->fd,"204 %s :User 0 %s",user->nick,i->second->nick); } } else { WriteServ(user->fd,"203 %s :???? 0 [%s]",user->nick,i->second->host); } } } } void handle_modules(char **parameters, int pcnt, userrec *user) { for (int i = 0; i < module_names.size(); i++) { Version V = modules[i]->GetVersion(); char modulename[MAXBUF]; strncpy(modulename,module_names[i].c_str(),256); WriteServ(user->fd,"900 %s :0x%08lx %d.%d.%d.%d %s",user->nick,modules[i],V.Major,V.Minor,V.Revision,V.Build,CleanFilename(modulename)); } } // calls a handler function for a command void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user) { for (int i = 0; i < cmdlist.size(); i++) { if (!strcasecmp(cmdlist[i].command,commandname)) { if (cmdlist[i].handler_function) { if (pcnt>=cmdlist[i].min_params) { if (strchr(user->modes,cmdlist[i].flags_needed)) { cmdlist[i].handler_function(parameters,pcnt,user); } } } } } } void handle_stats(char **parameters, int pcnt, userrec *user) { if (pcnt != 1) { return; } if (strlen(parameters[0])>1) { /* make the stats query 1 character long */ parameters[0][1] = '\0'; } /* stats m (list number of times each command has been used, plus bytecount) */ if (!strcasecmp(parameters[0],"m")) { for (int i = 0; i < cmdlist.size(); i++) { if (cmdlist[i].handler_function) { if (cmdlist[i].use_count) { /* RPL_STATSCOMMANDS */ WriteServ(user->fd,"212 %s %s %d %d",user->nick,cmdlist[i].command,cmdlist[i].use_count,cmdlist[i].total_bytes); } } } } /* stats z (debug and memory info) */ if (!strcasecmp(parameters[0],"z")) { WriteServ(user->fd,"249 %s :Users(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,clientlist.size(),clientlist.size()*sizeof(userrec),clientlist.bucket_count()); WriteServ(user->fd,"249 %s :Channels(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,chanlist.size(),chanlist.size()*sizeof(chanrec),chanlist.bucket_count()); WriteServ(user->fd,"249 %s :Commands(VECTOR) %d (%d bytes)",user->nick,cmdlist.size(),cmdlist.size()*sizeof(command_t)); WriteServ(user->fd,"249 %s :MOTD(VECTOR) %d, RULES(VECTOR) %d",user->nick,MOTD.size(),RULES.size()); WriteServ(user->fd,"249 %s :address_cache(HASH_MAP) %d (%d buckets)",user->nick,IP.size(),IP.bucket_count()); WriteServ(user->fd,"249 %s :Modules(VECTOR) %d (%d)",user->nick,modules.size(),modules.size()*sizeof(Module)); WriteServ(user->fd,"249 %s :ClassFactories(VECTOR) %d (%d)",user->nick,factory.size(),factory.size()*sizeof(ircd_module)); WriteServ(user->fd,"249 %s :Ports(STATIC_ARRAY) %d",user->nick,boundPortCount); } /* stats o */ if (!strcasecmp(parameters[0],"o")) { for (int i = 0; i < ConfValueEnum("oper",&config_f); i++) { char LoginName[MAXBUF]; char HostName[MAXBUF]; char OperType[MAXBUF]; ConfValue("oper","name",i,LoginName,&config_f); ConfValue("oper","host",i,HostName,&config_f); ConfValue("oper","type",i,OperType,&config_f); WriteServ(user->fd,"243 %s O %s * %s %s 0",user->nick,HostName,LoginName,OperType); } } /* stats l (show user I/O stats) */ if (!strcasecmp(parameters[0],"l")) { WriteServ(user->fd,"211 %s :server:port nick bytes_in cmds_in bytes_out cmds_out",user->nick); for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++) { if (isnick(i->second->nick)) { WriteServ(user->fd,"211 %s :%s:%d %s %d %d %d %d",user->nick,ServerName,i->second->port,i->second->nick,i->second->bytes_in,i->second->cmds_in,i->second->bytes_out,i->second->cmds_out); } else { WriteServ(user->fd,"211 %s :%s:%d (unknown@%d) %d %d %d %d",user->nick,ServerName,i->second->port,i->second->fd,i->second->bytes_in,i->second->cmds_in,i->second->bytes_out,i->second->cmds_out); } } } /* stats u (show server uptime) */ if (!strcasecmp(parameters[0],"u")) { time_t current_time = 0; current_time = time(NULL); time_t server_uptime = current_time - startup_time; struct tm* stime; stime = gmtime(&server_uptime); /* i dont know who the hell would have an ircd running for over a year nonstop, but * Craig suggested this, and it seemed a good idea so in it went */ if (stime->tm_year > 70) { WriteServ(user->fd,"242 %s :Server up %d years, %d days, %.2d:%.2d:%.2d",user->nick,(stime->tm_year-70),stime->tm_yday,stime->tm_hour,stime->tm_min,stime->tm_sec); } else { WriteServ(user->fd,"242 %s :Server up %d days, %.2d:%.2d:%.2d",user->nick,stime->tm_yday,stime->tm_hour,stime->tm_min,stime->tm_sec); } } WriteServ(user->fd,"219 %s %s :End of /STATS report",user->nick,parameters[0]); WriteOpers("*** Notice: Stats '%s' requested by %s (%s@%s)",parameters[0],user->nick,user->ident,user->host); } void handle_connect(char **parameters, int pcnt, userrec *user) { char Link_ServerName[1024]; char Link_IPAddr[1024]; char Link_Port[1024]; char Link_Pass[1024]; int LinkPort; bool found = false; for (int i = 0; i < ConfValueEnum("link",&config_f); i++) { if (!found) { ConfValue("link","name",i,Link_ServerName,&config_f); ConfValue("link","ipaddr",i,Link_IPAddr,&config_f); ConfValue("link","port",i,Link_Port,&config_f); ConfValue("link","sendpass",i,Link_Pass,&config_f); log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass); LinkPort = atoi(Link_Port); if (match(Link_ServerName,parameters[0])) { found = true; break; } } } if (!found) { WriteServ(user->fd,"NOTICE %s :*** Failed to connect to %s: No servers matching this pattern are configured for linking.",user->nick,parameters[0]); return; } // TODO: Perform a check here to stop a server being linked twice! WriteServ(user->fd,"NOTICE %s :*** Connecting to %s (%s) port %s...",user->nick,Link_ServerName,Link_IPAddr,Link_Port); if (me[defaultRoute]) { me[defaultRoute]->BeginLink(Link_IPAddr,LinkPort,Link_Pass,Link_ServerName,me[defaultRoute]->port); return; } else { WriteServ(user->fd,"NOTICE %s :No default route is defined for server connections on this server. You must define a server connection to be default route so that sockets can be bound to it.",user->nick); } } void DoSplitEveryone() { bool go_again = true; while (go_again) { go_again = false; for (int i = 0; i < 32; i++) { if (me[i] != NULL) { for (vector::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++) { if (strcasecmp(j->GetServerName().c_str(),ServerName)) { j->routes.clear(); j->CloseConnection(); me[i]->connectors.erase(j); go_again = true; break; } } } } } log(DEBUG,"Removed server. Will remove clients..."); // iterate through the userlist and remove all users on this server. // because we're dealing with a mesh, we dont have to deal with anything // "down-route" from this server (nice huh) go_again = true; char reason[MAXBUF]; while (go_again) { go_again = false; for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++) { if (strcasecmp(u->second->server,ServerName)) { snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server); kill_link(u->second,reason); go_again = true; break; } } } } void handle_squit(char **parameters, int pcnt, userrec *user) { // send out an squit across the mesh and then clear the server list (for local squit) if (!pcnt) { WriteOpers("SQUIT command issued by %s",user->nick); char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"& %s",ServerName); NetSendToAll(buffer); DoSplitEveryone(); } else { WriteServ(user->fd,"NOTICE :*** Remote SQUIT not supported yet."); } } char islast(const char* s) { char c = '`'; for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s)) { c = '|'; } if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s)) { c = '`'; } } } } return c; } 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; } void handle_links(char **parameters, int pcnt, userrec *user) { WriteServ(user->fd,"364 %s %s %s :0 %s",user->nick,ServerName,ServerName,ServerDesc); for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { WriteServ(user->fd,"364 %s %s %s :1 %s",user->nick,me[j]->connectors[k].GetServerName().c_str(),ServerName,me[j]->connectors[k].GetDescription().c_str()); } } } WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick); } void handle_map(char **parameters, int pcnt, userrec *user) { char line[MAXBUF]; snprintf(line,MAXBUF,"006 %s :%s",user->nick,ServerName); while (strlen(line) < 50) strcat(line," "); WriteServ(user->fd,"%s%d (%.2f%%)",line,local_count(),(float)(((float)local_count()/(float)usercnt())*100)); for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { snprintf(line,MAXBUF,"006 %s :%c-%s",user->nick,islast(me[j]->connectors[k].GetServerName().c_str()),me[j]->connectors[k].GetServerName().c_str()); while (strlen(line) < 50) strcat(line," "); WriteServ(user->fd,"%s%d (%.2f%%)",line,map_count(me[j]->connectors[k].GetServerName().c_str()),(float)(((float)map_count(me[j]->connectors[k].GetServerName().c_str())/(float)usercnt())*100)); } } } WriteServ(user->fd,"007 %s :End of /MAP",user->nick); } void handle_oper(char **parameters, int pcnt, userrec *user) { char LoginName[MAXBUF]; char Password[MAXBUF]; char OperType[MAXBUF]; char TypeName[MAXBUF]; char Hostname[MAXBUF]; int i,j; for (int i = 0; i < ConfValueEnum("oper",&config_f); i++) { ConfValue("oper","name",i,LoginName,&config_f); ConfValue("oper","password",i,Password,&config_f); if ((!strcmp(LoginName,parameters[0])) && (!strcmp(Password,parameters[1]))) { /* correct oper credentials */ ConfValue("oper","type",i,OperType,&config_f); WriteOpers("*** %s (%s@%s) is now an IRC operator of type %s",user->nick,user->ident,user->host,OperType); WriteServ(user->fd,"381 %s :You are now an IRC operator of type %s",user->nick,OperType); WriteServ(user->fd,"MODE %s :+o",user->nick); for (j =0; j < ConfValueEnum("type",&config_f); j++) { ConfValue("type","name",j,TypeName,&config_f); if (!strcmp(TypeName,OperType)) { /* found this oper's opertype */ ConfValue("type","host",j,Hostname,&config_f); ChangeDisplayedHost(user,Hostname); } } if (!strchr(user->modes,'o')) { strcat(user->modes,"o"); } FOREACH_MOD OnOper(user); return; } } /* no such oper */ WriteServ(user->fd,"491 %s :Invalid oper credentials",user->nick); WriteOpers("*** WARNING! Failed oper attempt by %s!%s@%s!",user->nick,user->ident,user->host); } void handle_nick(char **parameters, int pcnt, userrec *user) { if (pcnt < 1) { log(DEBUG,"not enough params for handle_nick"); return; } if (!parameters[0]) { log(DEBUG,"invalid parameter passed to handle_nick"); return; } if (!strlen(parameters[0])) { log(DEBUG,"zero length new nick passed to handle_nick"); return; } if (!user) { log(DEBUG,"invalid user passed to handle_nick"); return; } if (!user->nick) { log(DEBUG,"invalid old nick passed to handle_nick"); return; } if (!strcasecmp(user->nick,parameters[0])) { log(DEBUG,"old nick is new nick, skipping"); return; } else { if (strlen(parameters[0]) > 1) { if (parameters[0][0] == ':') { *parameters[0]++; } } if ((Find(parameters[0])) && (Find(parameters[0]) != user)) { WriteServ(user->fd,"433 %s %s :Nickname is already in use.",user->nick,parameters[0]); return; } } if (isnick(parameters[0]) == 0) { WriteServ(user->fd,"432 %s %s :Erroneous Nickname",user->nick,parameters[0]); return; } if (user->registered == 7) { WriteCommon(user,"NICK %s",parameters[0]); // Q token must go to ALL servers!!! char buffer[MAXBUF]; snprintf(buffer,MAXBUF,"n %s %s",user->nick,parameters[0]); NetSendToAll(buffer); } /* change the nick of the user in the users_hash */ user = ReHashNick(user->nick, parameters[0]); /* actually change the nick within the record */ if (!user) return; if (!user->nick) return; strncpy(user->nick, parameters[0],NICKMAX); log(DEBUG,"new nick set: %s",user->nick); if (user->registered < 3) user->registered = (user->registered | 2); if (user->registered == 3) { /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */ ConnectUser(user); } log(DEBUG,"exit nickchange: %s",user->nick); } void force_nickchange(userrec* user,const char* newnick) { char nick[MAXBUF]; strcpy(nick,""); if (user) { if (newnick) { strncpy(nick,newnick,MAXBUF); } if (user->registered == 7) { char* pars[1]; pars[0] = nick; handle_nick(pars,1,user); } } } int process_parameters(char **command_p,char *parameters) { int i = 0; int j = 0; int q = 0; q = strlen(parameters); if (!q) { /* no parameters, command_p invalid! */ return 0; } if (parameters[0] == ':') { command_p[0] = parameters+1; return 1; } if (q) { if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':')) { /* only one parameter */ command_p[0] = parameters; if (parameters[0] == ':') { if (strchr(parameters,' ') != NULL) { command_p[0]++; } } return 1; } } command_p[j++] = parameters; for (int i = 0; i <= q; i++) { if (parameters[i] == ' ') { command_p[j++] = parameters+i+1; parameters[i] = '\0'; if (command_p[j-1][0] == ':') { *command_p[j-1]++; /* remove dodgy ":" */ break; /* parameter like this marks end of the sequence */ } } } return j; /* returns total number of items in the list */ } void process_command(userrec *user, char* cmd) { char *parameters; char *command; char *command_p[127]; char p[MAXBUF], temp[MAXBUF]; int i, j, items, cmd_found; for (int i = 0; i < 127; i++) command_p[i] = NULL; if (!user) { return; } if (!cmd) { return; } if (!strcmp(cmd,"")) { return; } int total_params = 0; if (strlen(cmd)>2) { for (int q = 0; q < strlen(cmd)-1; q++) { if ((cmd[q] == ' ') && (cmd[q+1] == ':')) { total_params++; // found a 'trailing', we dont count them after this. break; } if (cmd[q] == ' ') total_params++; } } // another phidjit bug... if (total_params > 126) { kill_link(user,"Protocol violation (1)"); return; } strcpy(temp,cmd); std::string tmp = cmd; for (int i = 0; i <= MODCOUNT; i++) { std::string oldtmp = tmp; modules[i]->OnServerRaw(tmp,true); if (oldtmp != tmp) { log(DEBUG,"A Module changed the input string!"); log(DEBUG,"New string: %s",tmp.c_str()); log(DEBUG,"Old string: %s",oldtmp.c_str()); break; } } strncpy(cmd,tmp.c_str(),MAXBUF); strcpy(temp,cmd); if (!strchr(cmd,' ')) { /* no parameters, lets skip the formalities and not chop up * the string */ log(DEBUG,"About to preprocess command with no params"); items = 0; command_p[0] = NULL; parameters = NULL; for (int i = 0; i <= strlen(cmd); i++) { cmd[i] = toupper(cmd[i]); } log(DEBUG,"Preprocess done length=%d",strlen(cmd)); command = cmd; } else { strcpy(cmd,""); j = 0; /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */ for (int i = 0; i < strlen(temp); i++) { if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7)) { cmd[j++] = temp[i]; cmd[j] = 0; } } /* split the full string into a command plus parameters */ parameters = p; strcpy(p," "); command = cmd; if (strchr(cmd,' ')) { for (int i = 0; i <= strlen(cmd); i++) { /* capitalise the command ONLY, leave params intact */ cmd[i] = toupper(cmd[i]); /* are we nearly there yet?! :P */ if (cmd[i] == ' ') { command = cmd; parameters = cmd+i+1; cmd[i] = '\0'; break; } } } else { for (int i = 0; i <= strlen(cmd); i++) { cmd[i] = toupper(cmd[i]); } } } cmd_found = 0; if (strlen(command)>MAXCOMMAND) { kill_link(user,"Protocol violation (2)"); return; } for (int x = 0; x < strlen(command); x++) { if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.')) { if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-')) { if (!strchr("@!\"$%^&*(){}[]_-=+;:'#~,.<>/?\\|`",command[x])) { kill_link(user,"Protocol violation (3)"); return; } } } } for (int i = 0; i != cmdlist.size(); i++) { if (strcmp(cmdlist[i].command,"")) { if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND)) { log(DEBUG,"Found matching command"); if (parameters) { if (strcmp(parameters,"")) { items = process_parameters(command_p,parameters); } else { items = 0; command_p[0] = NULL; } } else { items = 0; command_p[0] = NULL; } if (user) { log(DEBUG,"Processing command"); /* activity resets the ping pending timer */ user->nping = time(NULL) + 120; if ((items) < cmdlist[i].min_params) { log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command); WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command); return; } if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed)) { log(DEBUG,"process_command: permission denied: %s %s",user->nick,command); WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick); cmd_found = 1; return; } /* if the command isnt USER, PASS, or NICK, and nick is empty, * deny command! */ if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4))) { if ((!isnick(user->nick)) || (user->registered != 7)) { log(DEBUG,"process_command: not registered: %s %s",user->nick,command); WriteServ(user->fd,"451 %s :You have not registered",command); return; } } if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS"))) { log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items); if (cmdlist[i].handler_function) { /* ikky /stats counters */ if (temp) { if (user) { user->bytes_in += strlen(temp); user->cmds_in++; } cmdlist[i].use_count++; cmdlist[i].total_bytes+=strlen(temp); } /* WARNING: nothing may come after the * command handler call, as the handler * may free the user structure! */ cmdlist[i].handler_function(command_p,items,user); } return; } else { log(DEBUG,"process_command: not registered: %s %s",user->nick,command); WriteServ(user->fd,"451 %s :You have not registered",command); return; } } cmd_found = 1; } } } if ((!cmd_found) && (user)) { log(DEBUG,"process_command: not in table: %s %s",user->nick,command); WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command); } } void createcommand(char* cmd, handlerfunc f, char flags, int minparams) { command_t comm; /* create the command and push it onto the table */ strcpy(comm.command,cmd); 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 (%d parameters)",cmd,minparams); } void SetupCommandTable(void) { createcommand("USER",handle_user,0,4); createcommand("NICK",handle_nick,0,1); createcommand("QUIT",handle_quit,0,0); createcommand("VERSION",handle_version,0,0); createcommand("PING",handle_ping,0,1); createcommand("PONG",handle_pong,0,1); createcommand("ADMIN",handle_admin,0,0); createcommand("PRIVMSG",handle_privmsg,0,2); createcommand("INFO",handle_info,0,0); createcommand("TIME",handle_time,0,0); createcommand("WHOIS",handle_whois,0,1); createcommand("WALLOPS",handle_wallops,'o',1); createcommand("NOTICE",handle_notice,0,2); createcommand("JOIN",handle_join,0,1); createcommand("NAMES",handle_names,0,1); createcommand("PART",handle_part,0,1); createcommand("KICK",handle_kick,0,2); createcommand("MODE",handle_mode,0,1); createcommand("TOPIC",handle_topic,0,1); createcommand("WHO",handle_who,0,1); createcommand("MOTD",handle_motd,0,0); createcommand("RULES",handle_rules,0,0); createcommand("OPER",handle_oper,0,2); createcommand("LIST",handle_list,0,0); createcommand("DIE",handle_die,'o',1); createcommand("RESTART",handle_restart,'o',1); createcommand("KILL",handle_kill,'o',2); createcommand("REHASH",handle_rehash,'o',0); createcommand("LUSERS",handle_lusers,0,0); createcommand("STATS",handle_stats,0,1); createcommand("USERHOST",handle_userhost,0,1); createcommand("AWAY",handle_away,0,0); createcommand("ISON",handle_ison,0,0); createcommand("SUMMON",handle_summon,0,0); createcommand("USERS",handle_users,0,0); createcommand("INVITE",handle_invite,0,2); createcommand("PASS",handle_pass,0,1); createcommand("TRACE",handle_trace,'o',0); createcommand("WHOWAS",handle_whowas,0,1); createcommand("CONNECT",handle_connect,'o',1); createcommand("SQUIT",handle_squit,'o',0); createcommand("MODULES",handle_modules,'o',0); createcommand("LINKS",handle_links,0,0); createcommand("MAP",handle_map,0,0); } void process_buffer(const char* cmdbuf,userrec *user) { if (!user) { log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter"); return; } char cmd[MAXBUF]; int i; if (!cmdbuf) { log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter"); return; } if (!strcmp(cmdbuf,"")) { return; } strncpy(cmd,cmdbuf,MAXBUF); if (!strcmp(cmd,"")) { return; } if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10)) { cmd[strlen(cmd)-1] = '\0'; } if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10)) { cmd[strlen(cmd)-1] = '\0'; } if (!strcmp(cmd,"")) { return; } log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd); tidystring(cmd); if ((user) && (cmd)) { process_command(user,cmd); } } void DoSync(serverrec* serv, char* udp_host) { char data[MAXBUF]; // send start of sync marker: Y // at this point the ircd receiving it starts broadcasting this netburst to all ircds // except the ones its receiving it from. snprintf(data,MAXBUF,"Y %d",time(NULL)); serv->SendPacket(data,udp_host); // send users and channels for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++) { snprintf(data,MAXBUF,"N %d %s %s %s %s +%s %s :%s",u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,u->second->server,u->second->fullname); serv->SendPacket(data,udp_host); if (strcmp(chlist(u->second),"")) { snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second)); serv->SendPacket(data,udp_host); } } // send channel modes, topics etc... for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++) { snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second)); serv->SendPacket(data,udp_host); if (strcmp(c->second->topic,"")) { snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic); serv->SendPacket(data,udp_host); } // send current banlist for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++) { snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data); serv->SendPacket(data,udp_host); } } // send end of sync marker: E snprintf(data,MAXBUF,"F %d",time(NULL)); serv->SendPacket(data,udp_host); // ircd sends its serverlist after the end of sync here } void handle_V(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* src = strtok(params," "); char* dest = strtok(NULL," :"); char* text = strtok(NULL,"\r\n"); text++; userrec* user = Find(src); if (user) { userrec* dst = Find(dest); if (dst) { WriteTo(user, dst, "NOTICE %s :%s", dst->nick, text); } else { chanrec* d = FindChan(dest); if (d) { ChanExceptSender(d, user, "NOTICE %s :%s", d->name, text); } } } } void handle_P(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* src = strtok(params," "); char* dest = strtok(NULL," :"); char* text = strtok(NULL,"\r\n"); text++; userrec* user = Find(src); if (user) { userrec* dst = Find(dest); if (dst) { WriteTo(user, dst, "PRIVMSG %s :%s", dst->nick, text); } else { chanrec* d = FindChan(dest); if (d) { ChanExceptSender(d, user, "PRIVMSG %s :%s", d->name, text); } } } } void handle_i(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* nick = strtok(params," "); char* from = strtok(NULL," "); char* channel = strtok(NULL," "); userrec* u = Find(nick); userrec* user = Find(from); chanrec* c = FindChan(channel); if ((c) && (u) && (user)) { u->InviteTo(c->name); WriteFrom(u->fd,user,"INVITE %s :%s",u->nick,c->name); } } void handle_t(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* setby = strtok(params," "); char* channel = strtok(NULL," :"); char* topic = strtok(NULL,"\r\n"); topic++; userrec* u = Find(setby); chanrec* c = FindChan(channel); if ((c) && (u)) { WriteChannelLocal(c,u,"TOPIC %s :%s",c->name,topic); strncpy(c->topic,topic,MAXTOPIC); strncpy(c->setby,u->nick,NICKMAX); } } void handle_T(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* tm = strtok(params," "); char* setby = strtok(NULL," "); char* channel = strtok(NULL," :"); char* topic = strtok(NULL,"\r\n"); topic++; time_t TS = atoi(tm); chanrec* c = FindChan(channel); if (c) { // in the case of topics and TS, the *NEWER* if (TS <= c->topicset) { WriteChannelLocal(c,NULL,"TOPIC %s :%s",c->name,topic); strncpy(c->topic,topic,MAXTOPIC); strncpy(c->setby,setby,NICKMAX); } } } void handle_M(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* pars[128]; char original[MAXBUF],target[MAXBUF]; strncpy(original,params,MAXBUF); int index = 0; char* parameter = strtok(params," "); strncpy(target,parameter,MAXBUF); while (parameter) { pars[index++] = parameter; parameter = strtok(NULL," "); } merge_mode(pars,index); if (FindChan(target)) { WriteChannelLocal(FindChan(target), NULL, "MODE %s",original); } if (Find(target)) { WriteTo(NULL,Find(target),"MODE %s",original); } } // m is modes set by users only (not servers) valid targets are channels or users. void handle_m(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { // m blah #chatspike +b *!test@*4 char* pars[128]; char original[MAXBUF]; strncpy(original,params,MAXBUF); if (!strchr(params,' ')) { WriteOpers("WARNING! 'm' token in data stream without any parameters! Something fishy is going on!"); return; } int index = 0; char* src = strtok(params," "); userrec* user = Find(src); if (user) { log(DEBUG,"Found user: %s",user->nick); char* parameter = strtok(NULL," "); while (parameter) { pars[index++] = parameter; parameter = strtok(NULL," "); } log(DEBUG,"Calling merge_mode2"); merge_mode2(pars,index,user); } } void handle_L(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* nick = strtok(params," "); char* channel = strtok(NULL," :"); char* reason = strtok(NULL,"\r\n"); userrec* user = Find(nick); reason++; if (user) { if (strcmp(reason,"")) { del_channel(user,channel,reason,true); } else { del_channel(user,channel,NULL,true); } } } void handle_K(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* src = strtok(params," "); char* nick = strtok(NULL," :"); char* reason = strtok(NULL,"\r\n"); char kreason[MAXBUF]; reason++; userrec* u = Find(nick); userrec* user = Find(src); if ((user) && (u)) { WriteTo(user, u, "KILL %s :%s!%s!%s!%s (%s)", u->nick, source->name, ServerName, user->dhost,user->nick,reason); WriteOpers("*** Remote kill from %s by %s: %s!%s@%s (%s)",source->name,user->nick,u->nick,u->ident,u->host,reason); snprintf(kreason,MAXBUF,"[%s] Killed (%s (%s))",source->name,user->nick,reason); kill_link(u,kreason); } } void handle_Q(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* nick = strtok(params," :"); char* reason = strtok(NULL,"\r\n"); reason++; userrec* user = Find(nick); if (user) { if (strlen(reason)>MAXQUIT) { reason[MAXQUIT-1] = '\0'; } WriteCommonExcept(user,"QUIT :%s",reason); user_hash::iterator iter = clientlist.find(user->nick); if (iter != clientlist.end()) { log(DEBUG,"deleting user hash value %d",iter->second); if ((iter->second) && (user->registered == 7)) { delete iter->second; } clientlist.erase(iter); } purge_empty_chans(); } } void handle_n(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* oldnick = strtok(params," "); char* newnick = strtok(NULL," "); userrec* user = Find(oldnick); if (user) { WriteCommon(user,"NICK %s",newnick); user = ReHashNick(user->nick, newnick); if (!user) return; if (!user->nick) return; strncpy(user->nick, newnick,NICKMAX); log(DEBUG,"new nick set: %s",user->nick); } } // k : void handle_k(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* src = strtok(params," "); char* dest = strtok(NULL," "); char* channel = strtok(NULL," :"); char* reason = strtok(NULL,"\r\n"); reason++; userrec* s = Find(src); userrec* d = Find(dest); chanrec* c = FindChan(channel); if ((s) && (d) && (c)) { kick_channel(s,d,c,reason); } } void handle_AT(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* who = strtok(params," :"); char* text = strtok(NULL,"\r\n"); text++; userrec* s = Find(who); if (s) { WriteWallOps(s,true,text); } } void handle_N(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* tm = strtok(params," "); char* nick = strtok(NULL," "); char* host = strtok(NULL," "); char* dhost = strtok(NULL," "); char* ident = strtok(NULL," "); char* modes = strtok(NULL," "); char* server = strtok(NULL," :"); char* gecos = strtok(NULL,"\r\n"); gecos++; modes++; time_t TS = atoi(tm); user_hash::iterator iter = clientlist.find(nick); if (iter != clientlist.end()) { // nick collision WriteOpers("Nickname collision: %s@%s != %s@%s",nick,server,iter->second->nick,iter->second->server); char str[MAXBUF]; snprintf(str,MAXBUF,"Killed (Nick Collision (%s@%s < %s@%s))",nick,server,iter->second->nick,iter->second->server); WriteServ(iter->second->fd, "KILL %s :%s",iter->second->nick,str); kill_link(iter->second,str); } clientlist[nick] = new userrec(); // remote users have an fd of -1. This is so that our Write abstraction // routines know to route any messages to this record away to whatever server // theyre on. clientlist[nick]->fd = -1; strncpy(clientlist[nick]->nick, nick,NICKMAX); strncpy(clientlist[nick]->host, host,160); strncpy(clientlist[nick]->dhost, dhost,160); strncpy(clientlist[nick]->server, server,256); strncpy(clientlist[nick]->ident, ident,10); // +1 char to compensate for tilde strncpy(clientlist[nick]->fullname, gecos,128); clientlist[nick]->signon = TS; clientlist[nick]->nping = 0; // this is ignored for a remote user anyway. clientlist[nick]->lastping = 1; clientlist[nick]->port = 0; // so is this... clientlist[nick]->registered = 7; // this however we need to set for them to receive messages and appear online clientlist[nick]->idle_lastmsg = time(NULL); // this is unrealiable and wont actually be used locally for (int i = 0; i < MAXCHANS; i++) { clientlist[nick]->chans[i].channel = NULL; clientlist[nick]->chans[i].uc_modes = 0; } } void handle_F(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { long tdiff = time(NULL) - atoi(params); if (tdiff) WriteOpers("TS split for %s -> %s: %d",source->name,reply->name,tdiff); } void handle_a(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* nick = strtok(params," :"); char* gecos = strtok(NULL,"\r\n"); userrec* user = Find(nick); if (user) strncpy(user->fullname,gecos,MAXBUF); } void handle_b(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* nick = strtok(params," "); char* host = strtok(NULL," "); userrec* user = Find(nick); if (user) strncpy(user->dhost,host,160); } void handle_plus(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { // %s %s %d %d // + test3.chatspike.net 7010 -2016508415 char* servername = strtok(params," "); char* ipaddr = strtok(NULL," "); char* ipport = strtok(NULL," "); char* cookie = strtok(NULL," "); log(DEBUG,"*** Connecting back to %s:%d",ipaddr,atoi(ipport)); bool conn_already = false; for (int i = 0; i < 32; i++) { if (me[i] != NULL) { for (int j = 0; j < me[i]->connectors.size(); j++) { if (!strcasecmp(me[i]->connectors[j].GetServerName().c_str(),servername)) { if (me[i]->connectors[j].GetServerPort() == atoi(ipport)) { log(DEBUG,"Already got a connection to %s:%d, ignoring +",ipaddr,atoi(ipport)); conn_already = true; } } } } } if (!conn_already) me[defaultRoute]->MeshCookie(ipaddr,atoi(ipport),atoi(cookie),servername); } void handle_R(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { char* server = strtok(params," "); char* data = strtok(NULL,"\r\n"); log(DEBUG,"Forwarded packet '%s' to '%s'",data,server); NetSendToOne(server,data); } void handle_J(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { // IMPORTANT NOTE // The J token currently has no timestamp - this needs looking at // because it will allow splitriding. char* nick = strtok(params," "); char* channel = strtok(NULL," "); userrec* user = Find(nick); while (channel) { if ((user != NULL) && (strcmp(channel,""))) { char privilage = '\0'; if (channel[0] != '#') { privilage = channel[0]; channel++; } add_channel(user,channel,"",true); // now work out the privilages they should have on each channel // and send the appropriate servermodes. for (int i = 0; i != MAXCHANS; i++) { if (user->chans[i].channel) { if (!strcasecmp(user->chans[i].channel->name,channel)) { if (privilage == '@') { user->chans[i].uc_modes = user->chans[i].uc_modes | UCMODE_OP; WriteChannelLocal(user->chans[i].channel, NULL, "MODE %s +o %s",channel,user->nick); } if (privilage == '%') { user->chans[i].uc_modes = user->chans[i].uc_modes | UCMODE_HOP; WriteChannelLocal(user->chans[i].channel, NULL, "MODE %s +h %s",channel,user->nick); } if (privilage == '+') { user->chans[i].uc_modes = user->chans[i].uc_modes | UCMODE_VOICE; WriteChannelLocal(user->chans[i].channel, NULL, "MODE %s +v %s",channel,user->nick); } } } } } channel = strtok(NULL," "); } } void NetSendMyRoutingTable() { // send out a line saying what is reachable to us. // E.g. if A is linked to B C and D, send out: // $ A B C D // if its only linked to B and D send out: // $ A B D // if it has no links, dont even send out the line at all. char buffer[MAXBUF]; sprintf(buffer,"$ %s",ServerName); bool sendit = false; for (int i = 0; i < 32; i++) { if (me[i] != NULL) { for (int j = 0; j < me[i]->connectors.size(); j++) { if (me[i]->connectors[j].GetState() != STATE_DISCONNECTED) { strncat(buffer," ",MAXBUF); strncat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF); sendit = true; } } } } if (sendit) NetSendToAll(buffer); } void handle_dollar(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { log(DEBUG,"Storing routing table..."); char* sourceserver = strtok(params," "); char* server = strtok(NULL," "); for (int i = 0; i < 32; i++) { if (me[i] != NULL) { for (int j = 0; j < me[i]->connectors.size(); j++) { if (!strcasecmp(me[i]->connectors[j].GetServerName().c_str(),sourceserver)) { me[i]->connectors[j].routes.clear(); log(DEBUG,"Found entry for source server."); while (server) { // store each route me[i]->connectors[j].routes.push_back(server); log(DEBUG,"*** Stored route: %s -> %s -> %s",ServerName,sourceserver,server); server = strtok(NULL," "); } return; } } } } log(DEBUG,"Warning! routing table received from nonexistent server!"); } void DoSplit(const char* params) { bool go_again = true; while (go_again) { go_again = false; for (int i = 0; i < 32; i++) { if (me[i] != NULL) { for (vector::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++) { if (!strcasecmp(j->GetServerName().c_str(),params)) { j->routes.clear(); j->CloseConnection(); me[i]->connectors.erase(j); go_again = true; break; } } } } } log(DEBUG,"Removed server. Will remove clients..."); // iterate through the userlist and remove all users on this server. // because we're dealing with a mesh, we dont have to deal with anything // "down-route" from this server (nice huh) go_again = true; char reason[MAXBUF]; snprintf(reason,MAXBUF,"%s %s",ServerName,params); while (go_again) { go_again = false; for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++) { if (!strcasecmp(u->second->server,params)) { kill_link(u->second,reason); go_again = true; break; } } } } // removes a server. Will NOT remove its users! void RemoveServer(const char* name) { bool go_again = true; while (go_again) { go_again = false; for (int i = 0; i < 32; i++) { if (me[i] != NULL) { for (vector::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++) { if (!strcasecmp(j->GetServerName().c_str(),name)) { j->routes.clear(); j->CloseConnection(); me[i]->connectors.erase(j); go_again = true; break; } } } } } } void handle_amp(char token,char* params,serverrec* source,serverrec* reply, char* udp_host) { log(DEBUG,"Netsplit! %s split from mesh, removing!",params); bool go_again = true; while (go_again) { go_again = false; for (int i = 0; i < 32; i++) { if (me[i] != NULL) { for (vector::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++) { if (!strcasecmp(j->GetServerName().c_str(),params)) { j->routes.clear(); j->CloseConnection(); me[i]->connectors.erase(j); go_again = true; break; } } } } } log(DEBUG,"Removed server. Will remove clients..."); // iterate through the userlist and remove all users on this server. // because we're dealing with a mesh, we dont have to deal with anything // "down-route" from this server (nice huh) go_again = true; char reason[MAXBUF]; snprintf(reason,MAXBUF,"%s %s",ServerName,params); while (go_again) { go_again = false; for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++) { if (!strcasecmp(u->second->server,params)) { kill_link(u->second,reason); go_again = true; break; } } } } long authcookie; void process_restricted_commands(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,char* ipaddr,int port) { char buffer[MAXBUF]; switch(token) { // Y // start netburst case 'Y': nb_start = time(NULL); WriteOpers("Server %s is starting netburst.",udp_host); // now broadcast this new servers address out to all servers that are linked to us, // except the newcomer. They'll all attempt to connect back to it. authcookie = rand()*rand(); snprintf(buffer,MAXBUF,"~ %d",authcookie); NetSendToAll(buffer); break; // ~ // Store authcookie // once stored, this authcookie permits other servers to log in // without user or password, using it. case '~': auth_cookies.push_back(atoi(params)); log(DEBUG,"*** Stored auth cookie, will permit servers with auth-cookie %d",atoi(params)); break; // connect back to a server using an authcookie case '+': handle_plus(token,params,source,reply,udp_host); break; // routing table case '$': handle_dollar(token,params,source,reply,udp_host); break; // node unreachable - we cant route to a server, sooooo we slit it off. // servers can generate these for themselves for an squit. case '&': handle_amp(token,params,source,reply,udp_host); break; // R // redirect token, send all of along to the given // server as this server has been found to still have a route to it case 'R': handle_R(token,params,source,reply,udp_host); break; // ? // ping case '?': reply->SendPacket("!",udp_host); break; // ? // pong case '!': break; // * // no operation case '*': break; // N : // introduce remote client case 'N': handle_N(token,params,source,reply,udp_host); break; // a : // change GECOS (SETNAME) case 'a': handle_a(token,params,source,reply,udp_host); break; // b : // change displayed host (SETHOST) case 'b': handle_b(token,params,source,reply,udp_host); break; // t : // change a channel topic case 't': handle_t(token,params,source,reply,udp_host); break; // i // invite a user to a channel case 'i': handle_i(token,params,source,reply,udp_host); break; // k : // kick a user from a channel case 'k': handle_k(token,params,source,reply,udp_host); break; // n // change nickname of client -- a server should only be able to // change the nicknames of clients that reside on it unless // they are ulined. case 'n': handle_n(token,params,source,reply,udp_host); break; // J // Join user to channel list, merge channel permissions case 'J': handle_J(token,params,source,reply,udp_host); break; // T : // change channel topic (netburst only) case 'T': handle_T(token,params,source,reply,udp_host); break; // M [MODE-PARAMETERS] // Server setting modes on an object case 'M': handle_M(token,params,source,reply,udp_host); break; // m [MODE-PARAMETERS] // User setting modes on an object case 'm': handle_m(token,params,source,reply,udp_host); break; // P : // Send a private/channel message case 'P': handle_P(token,params,source,reply,udp_host); break; // V : // Send a private/channel notice case 'V': handle_V(token,params,source,reply,udp_host); break; // L : // User parting a channel case 'L': handle_L(token,params,source,reply,udp_host); break; // Q : // user quitting case 'Q': handle_Q(token,params,source,reply,udp_host); break; // K : // remote kill case 'K': handle_K(token,params,source,reply,udp_host); break; // @ : // wallops case '@': handle_AT(token,params,source,reply,udp_host); break; // F // end netburst case 'F': WriteOpers("Server %s has completed netburst. (%d secs)",udp_host,time(NULL)-nb_start); handle_F(token,params,source,reply,udp_host); nb_start = 0; // tell all the other servers to use this authcookie to connect back again // got '+ test3.chatspike.net 7010 -2016508415' from test.chatspike.net snprintf(buffer,MAXBUF,"+ %s %s %d %d",udp_host,ipaddr,port,authcookie); NetSendToAllExcept(udp_host,buffer); break; // X // Send netburst now case 'X': WriteOpers("Sending my netburst to %s",udp_host); DoSync(source,udp_host); WriteOpers("Send of netburst to %s completed",udp_host); NetSendMyRoutingTable(); break; // anything else default: WriteOpers("WARNING! Unknown datagram type '%c'",token); break; } } void handle_link_packet(char* udp_msg, char* udp_host, serverrec *serv) { char response[10240]; char token = udp_msg[0]; char* params = udp_msg + 2; char finalparam[1024]; strcpy(finalparam," :xxxx"); if (strstr(udp_msg," :")) { strncpy(finalparam,strstr(udp_msg," :"),1024); } if (token == '-') { char* cookie = strtok(params," "); char* servername = strtok(NULL," "); char* serverdesc = finalparam+2; WriteOpers("AuthCookie CONNECT from %s (%s)",servername,udp_host); for (int u = 0; u < auth_cookies.size(); u++) { if (auth_cookies[u] == atoi(cookie)) { WriteOpers("Allowed cookie from %s, is now part of the mesh",servername); for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),udp_host)) { me[j]->connectors[k].SetServerName(servername); me[j]->connectors[k].SetDescription(serverdesc); me[j]->connectors[k].SetState(STATE_CONNECTED); NetSendMyRoutingTable(); return; } } } WriteOpers("\2WARNING!\2 %s sent us an authentication packet but we are not authenticating with this server right now! Possible intrusion attempt!",udp_host); return; } return; } } // bad cookie, bad bad! go sit in the corner! WriteOpers("Bad cookie from %s!",servername); return; } else if (token == 'S') { // S test.chatspike.net password portn :ChatSpike InspIRCd test server char* servername = strtok(params," "); char* password = strtok(NULL," "); char* myport = strtok(NULL," "); char* revision = strtok(NULL," "); char* serverdesc = finalparam+2; WriteOpers("CONNECT from %s (%s) (their port: %d)",servername,udp_host,atoi(myport)); ircd_connector* cn = serv->FindHost(servername); if (cn) { WriteOpers("CONNECT aborted: Server %s already exists from %s",servername,ServerName); char buffer[MAXBUF]; sprintf(buffer,"E :Server %s already exists!",servername); serv->SendPacket(buffer,udp_host); RemoveServer(udp_host); return; } if (atoi(revision) != GetRevision()) { WriteOpers("CONNECT aborted: Could not link to %s, is an incompatible version %s, our version is %d",servername,revision,GetRevision()); char buffer[MAXBUF]; sprintf(buffer,"E :Version number mismatch"); serv->SendPacket(buffer,udp_host); RemoveServer(udp_host); RemoveServer(servername); return; } for (int j = 0; j < serv->connectors.size(); j++) { if (!strcasecmp(serv->connectors[j].GetServerName().c_str(),udp_host)) { serv->connectors[j].SetServerName(servername); serv->connectors[j].SetDescription(serverdesc); serv->connectors[j].SetServerPort(atoi(myport)); } } char Link_ServerName[1024]; char Link_IPAddr[1024]; char Link_Port[1024]; char Link_Pass[1024]; char Link_SendPass[1024]; int LinkPort = 0; // search for a corresponding block in the config files for (int i = 0; i < ConfValueEnum("link",&config_f); i++) { ConfValue("link","name",i,Link_ServerName,&config_f); ConfValue("link","ipaddr",i,Link_IPAddr,&config_f); ConfValue("link","port",i,Link_Port,&config_f); ConfValue("link","recvpass",i,Link_Pass,&config_f); ConfValue("link","sendpass",i,Link_SendPass,&config_f); log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass); LinkPort = atoi(Link_Port); if (!strcasecmp(Link_ServerName,servername)) { // we have a matching link line - // send a 'diminutive' server message back... snprintf(response,10240,"s %s %s :%s",ServerName,Link_SendPass,ServerDesc); serv->SendPacket(response,servername); for (int t = 0; t < serv->connectors.size(); t++) { if (!strcasecmp(serv->connectors[t].GetServerName().c_str(),servername)) { serv->connectors[t].SetState(STATE_CONNECTED); } } return; } } char buffer[MAXBUF]; sprintf(buffer,"E :Access is denied (no matching link block)"); serv->SendPacket(buffer,udp_host); WriteOpers("CONNECT from %s denied, no matching link block",servername); RemoveServer(udp_host); RemoveServer(servername); return; } else if (token == 's') { // S test.chatspike.net password :ChatSpike InspIRCd test server char* servername = strtok(params," "); char* password = strtok(NULL," "); char* serverdesc = finalparam+2; // TODO: we should do a check here to ensure that this server is one we recently initiated a // link with, and didnt hear an 's' or 'E' back from yet (these are the only two valid responses // to an 'S' command. If we didn't recently send an 'S' to this server, theyre trying to spoof // a connect, so put out an oper alert! // for now, just accept all, we'll fix that later. WriteOpers("%s accepted our link credentials ",servername); char Link_ServerName[1024]; char Link_IPAddr[1024]; char Link_Port[1024]; char Link_Pass[1024]; char Link_SendPass[1024]; int LinkPort = 0; // search for a corresponding block in the config files for (int i = 0; i < ConfValueEnum("link",&config_f); i++) { ConfValue("link","name",i,Link_ServerName,&config_f); ConfValue("link","ipaddr",i,Link_IPAddr,&config_f); ConfValue("link","port",i,Link_Port,&config_f); ConfValue("link","recvpass",i,Link_Pass,&config_f); ConfValue("link","sendpass",i,Link_SendPass,&config_f); log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass); LinkPort = atoi(Link_Port); if (!strcasecmp(Link_ServerName,servername)) { // matching link at this end too, we're all done! // at this point we must begin key exchange and insert this // server into our 'active' table. for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int k = 0; k < me[j]->connectors.size(); k++) { if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),udp_host)) { char buffer[MAXBUF]; me[j]->connectors[k].SetDescription(serverdesc); me[j]->connectors[k].SetState(STATE_CONNECTED); sprintf(buffer,"X 0"); serv->SendPacket(buffer,udp_host); DoSync(me[j],udp_host); NetSendMyRoutingTable(); return; } } } WriteOpers("\2WARNING!\2 %s sent us an authentication packet but we are not authenticating with this server right noe! Possible intrusion attempt!",udp_host); return; } } else { log(DEBUG,"Server names '%s' and '%s' don't match",Link_ServerName,servername); } } char buffer[MAXBUF]; sprintf(buffer,"E :Access is denied (no matching link block)"); serv->SendPacket(buffer,udp_host); WriteOpers("CONNECT from %s denied, no matching link block",servername); RemoveServer(udp_host); RemoveServer(servername); return; } else if (token == 'E') { char* error_message = finalparam+2; WriteOpers("ERROR from %s: %s",udp_host,error_message); return; } else { serverrec* source_server = NULL; for (int j = 0; j < 32; j++) { if (me[j] != NULL) { for (int x = 0; x < me[j]->connectors.size(); x++) { log(DEBUG,"Servers are: '%s' '%s'",udp_host,me[j]->connectors[x].GetServerName().c_str()); if (!strcasecmp(me[j]->connectors[x].GetServerName().c_str(),udp_host)) { if (me[j]->connectors[x].GetState() == STATE_CONNECTED) { // found a valid ircd_connector. process_restricted_commands(token,params,me[j],serv,udp_host,me[j]->connectors[x].GetServerIP(),me[j]->connectors[x].GetServerPort()); return; } } } } } log(DEBUG,"Unrecognised token or unauthenticated host in datagram from %s: %c",udp_host,token); } } int reap_counter = 0; int InspIRCd(void) { struct sockaddr_in client, server; char addrs[MAXBUF][255]; int openSockfd[MAXSOCKS], incomingSockfd, result = TRUE; socklen_t length; int count = 0, scanDetectTrigger = TRUE, showBanner = FALSE; int selectResult = 0, selectResult2 = 0; char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF]; char resolvedHost[MAXBUF]; fd_set selectFds; struct timeval tv; log_file = fopen("ircd.log","a+"); if (!log_file) { printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n"); Exit(ERROR); } log(DEBUG,"InspIRCd: startup: begin"); log(DEBUG,"$Id$"); if (geteuid() == 0) { printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n"); Exit(ERROR); log(DEBUG,"InspIRCd: startup: not starting with UID 0!"); } SetupCommandTable(); log(DEBUG,"InspIRCd: startup: default command table set up"); ReadConfig(); if (strcmp(DieValue,"")) { printf("WARNING: %s\n\n",DieValue); exit(0); } log(DEBUG,"InspIRCd: startup: read config"); int count2 = 0, count3 = 0; for (count = 0; count < ConfValueEnum("bind",&config_f); count++) { ConfValue("bind","port",count,configToken,&config_f); ConfValue("bind","address",count,Addr,&config_f); ConfValue("bind","type",count,Type,&config_f); if (!strcmp(Type,"servers")) { char Default[MAXBUF]; strcpy(Default,"no"); ConfValue("bind","default",count,Default,&config_f); if (strchr(Default,'y')) { defaultRoute = count3; log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken); } me[count3] = new serverrec(ServerName,100L,false); me[count3]->CreateListener(Addr,atoi(configToken)); count3++; } else { ports[count2] = atoi(configToken); strcpy(addrs[count2],Addr); count2++; } log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type); } portCount = count2; UDPportCount = count3; log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount); log(DEBUG,"InspIRCd: startup: InspIRCd is now running!"); printf("\n"); /* BugFix By Craig! :p */ count = 0; for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++) { char modfile[MAXBUF]; ConfValue("module","name",count2,configToken,&config_f); sprintf(modfile,"%s/%s",MOD_PATH,configToken,&config_f); printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile); log(DEBUG,"InspIRCd: startup: Loading module: %s",modfile); /* If The File Doesnt exist, Trying to load it * Will Segfault the IRCd.. So, check to see if * it Exists, Before Proceeding. */ if (FileExists(modfile)) { factory[count] = new ircd_module(modfile); if (factory[count]->LastError()) { log(DEBUG,"Unable to load %s: %s",modfile,factory[count]->LastError()); sprintf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError()); Exit(ERROR); } if (factory[count]->factory) { modules[count] = factory[count]->factory->CreateModule(); /* save the module and the module's classfactory, if * this isnt done, random crashes can occur :/ */ module_names.push_back(modfile); } else { log(DEBUG,"Unable to load %s",modfile); sprintf("Unable to load %s\nExiting...\n",modfile); Exit(ERROR); } /* Increase the Count */ count++; } else { log(DEBUG,"InspIRCd: startup: Module Not Found %s",modfile); printf("Module Not Found: \033[1;37m%s\033[0;37m, Skipping\n",modfile); } } MODCOUNT = count - 1; log(DEBUG,"Total loaded modules: %d",MODCOUNT+1); printf("\nInspIRCd is now running!\n"); startup_time = time(NULL); if (nofork) { log(VERBOSE,"Not forking as -nofork was specified"); } else { if (DaemonSeed() == ERROR) { log(DEBUG,"InspIRCd: startup: can't daemonise"); printf("ERROR: could not go into daemon mode. Shutting down.\n"); Exit(ERROR); } } /* setup select call */ FD_ZERO(&selectFds); log(DEBUG,"InspIRCd: startup: zero selects"); log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount); for (count = 0; count < portCount; count++) { if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR) { log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]); return(ERROR); } if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR) { log(DEBUG,"InspIRCd: startup: failed to bind port %d",ports[count]); } else /* well we at least bound to one socket so we'll continue */ { boundPortCount++; } } log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount); /* if we didn't bind to anything then abort */ if (boundPortCount == 0) { log(DEBUG,"InspIRCd: startup: no ports bound, bailing!"); return (ERROR); } length = sizeof (client); char udp_msg[MAXBUF], udp_host[MAXBUF]; /* main loop, this never returns */ for (;;) { #ifdef _POSIX_PRIORITY_SCHEDULING sched_yield(); #endif fd_set sfd; timeval tval; FD_ZERO(&sfd); user_hash::iterator count2 = clientlist.begin(); // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue // them in a list, then reap the list every second or so. if (reap_counter>300) { if (fd_reap.size() > 0) { for( int n = 0; n < fd_reap.size(); n++) { Blocking(fd_reap[n]); close(fd_reap[n]); NonBlocking(fd_reap[n]); } } fd_reap.clear(); reap_counter=0; } reap_counter++; fd_set serverfds; FD_ZERO(&serverfds); timeval tvs; for (int x = 0; x != UDPportCount; x++) { FD_SET(me[x]->fd, &serverfds); } tvs.tv_usec = 0; tvs.tv_sec = 0; int servresult = select(32767, &serverfds, NULL, NULL, &tvs); if (servresult > 0) { for (int x = 0; x != UDPportCount; x++) { if (FD_ISSET (me[x]->fd, &serverfds)) { char remotehost[MAXBUF],resolved[MAXBUF]; length = sizeof (client); incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length); strncpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF); if(CleanAndResolve(resolved, remotehost) != TRUE) { strncpy(resolved,remotehost,MAXBUF); } // add to this connections ircd_connector vector // *FIX* - we need the LOCAL port not the remote port in &client! me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port); } } } for (int x = 0; x < UDPportCount; x++) { std::deque msgs; msgs.clear(); if (me[x]->RecvPacket(msgs, udp_host)) { for (int ctr = 0; ctr < msgs.size(); ctr++) { char udp_msg[MAXBUF]; strncpy(udp_msg,msgs[ctr].c_str(),MAXBUF); if (strlen(udp_msg)<1) { log(DEBUG,"Invalid string from %s [route%d]",udp_host,x); break; } // during a netburst, send all data to all other linked servers if ((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F')) { NetSendToAllExcept(udp_host,udp_msg); } FOREACH_MOD OnPacketReceive(udp_msg); handle_link_packet(udp_msg, udp_host, me[x]); } goto label; } } while (count2 != clientlist.end()) { char data[10240]; tval.tv_usec = tval.tv_sec = 0; FD_ZERO(&sfd); int total_in_this_set = 0; user_hash::iterator xcount = count2; user_hash::iterator endingiter = count2; if (!count2->second) break; if (count2->second) if (count2->second->fd != 0) { // assemble up to 64 sockets into an fd_set // to implement a pooling mechanism. // // This should be up to 64x faster than the // old implementation. while (total_in_this_set < 64) { if (count2 != clientlist.end()) { // we don't check the state of remote users. if (count2->second->fd > 0) { FD_SET (count2->second->fd, &sfd); // registration timeout -- didnt send USER/NICK/HOST in the time specified in // their connection class. if ((time(NULL) > count2->second->timeout) && (count2->second->registered != 7)) { log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick); kill_link(count2->second,"Registration timeout"); goto label; } if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7)) { if ((!count2->second->lastping) && (count2->second->registered == 7)) { log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick); kill_link(count2->second,"Ping timeout"); goto label; } Write(count2->second->fd,"PING :%s",ServerName); log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick); count2->second->lastping = 0; count2->second->nping = time(NULL)+120; } } count2++; total_in_this_set++; } else break; } endingiter = count2; count2 = xcount; // roll back to where we were int v = 0; tval.tv_usec = 0; tval.tv_sec = 0; selectResult2 = select(65535, &sfd, NULL, NULL, &tval); // now loop through all of the items in this pool if any are waiting //if (selectResult2 > 0) for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++) { #ifdef _POSIX_PRIORITY_SCHEDULING sched_yield(); #endif result = EAGAIN; if ((count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd))) { log(DEBUG,"Reading fd %d",count2a->second->fd); memset(data, 0, 10240); result = read(count2a->second->fd, data, 10240); if (result) { if (result > 0) log(DEBUG,"Read %d characters from socket",result); userrec* current = count2a->second; int currfd = current->fd; char* l = strtok(data,"\n"); int floodlines = 0; while (l) { floodlines++; if ((floodlines > current->flood) && (current->flood != 0)) { log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host); WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host); kill_link(current,"Excess flood"); goto label; } char sanitized[NetBufferSize]; memset(sanitized, 0, NetBufferSize); int ptt = 0; for (int pt = 0; pt < strlen(l); pt++) { if (l[pt] != '\r') { sanitized[ptt++] = l[pt]; } } sanitized[ptt] = '\0'; if (strlen(sanitized)) { // we're gonna re-scan to check if the nick is gone, after every // command - if it has, we're gonna bail bool find_again = false; process_buffer(sanitized,current); // look for the user's record in case it's changed for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++) { if (c2->second->fd == currfd) { // found again, update pointer current == c2->second; find_again = true; break; } } if (!find_again) goto label; } l = strtok(NULL,"\n"); } goto label; } if ((result == -1) && (errno != EAGAIN) && (errno != EINTR)) { log(DEBUG,"killing: %s",count2a->second->nick); kill_link(count2a->second,strerror(errno)); goto label; } } // result EAGAIN means nothing read if (result == EAGAIN) { } else if (result == 0) { if (count2->second) { log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick); kill_link(count2a->second,"Client exited"); // must bail here? kill_link removes the hash, corrupting the iterator log(DEBUG,"Bailing from client exit"); goto label; } } else if (result > 0) { } } } for (int q = 0; q < total_in_this_set; q++) { // there is no iterator += operator :( //if (count2 != clientlist.end()) //{ count2++; //} } } // set up select call for (count = 0; count < boundPortCount; count++) { FD_SET (openSockfd[count], &selectFds); } tv.tv_usec = 1; selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv); /* select is reporting a waiting socket. Poll them all to find out which */ if (selectResult > 0) { char target[MAXBUF], resolved[MAXBUF]; for (count = 0; count < boundPortCount; count++) { if (FD_ISSET (openSockfd[count], &selectFds)) { length = sizeof (client); incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length); address_cache::iterator iter = IP.find(client.sin_addr); bool iscached = false; if (iter == IP.end()) { /* ip isn't in cache, add it */ strncpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF); if(CleanAndResolve(resolved, target) != TRUE) { strncpy(resolved,target,MAXBUF); } /* hostname now in 'target' */ IP[client.sin_addr] = new string(resolved); /* hostname in cache */ } else { /* found ip (cached) */ strncpy(resolved, iter->second->c_str(), MAXBUF); iscached = true; } if (incomingSockfd < 0) { WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target); log(DEBUG,"InspIRCd: accept failed: %d",ports[count]); } else { AddClient(incomingSockfd, resolved, ports[count], iscached); log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd); } goto label; } } } label: if(0) {}; // "Label must be followed by a statement"... so i gave it one. } /* not reached */ close (incomingSockfd); }