/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd is copyright (C) 2002-2006 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. * * --------------------------------------------------- */ using namespace std; #include "inspircd_config.h" #include #include #include #include #include #include #include #include #include "message.h" #include "inspircd.h" #include "inspircd_io.h" #include "inspstring.h" #include "helperfuncs.h" #include "userprocess.h" #include "xline.h" extern ServerConfig *Config; extern InspIRCd* ServerInstance; extern int openSockfd[MAX_DESCRIPTORS]; extern time_t TIME; extern int MODCOUNT; extern std::vector modules; extern std::vector factory; std::vector old_module_names, new_module_names, added_modules, removed_modules; ServerConfig::ServerConfig() { this->ClearStack(); *TempDir = *ServerName = *Network = *ServerDesc = *AdminName = '\0'; *HideWhoisServer = *AdminEmail = *AdminNick = *diepass = *restartpass = '\0'; *CustomVersion = *motd = *rules = *PrefixQuit = *DieValue = *DNSServer = '\0'; *OperOnlyStats = *ModPath = *MyExecutable = *DisabledCommands = *PID = '\0'; log_file = NULL; forcedebug = OperSpyWhois = nofork = HideBans = HideSplits = false; writelog = AllowHalfop = true; dns_timeout = DieDelay = 5; MaxTargets = 20; NetBufferSize = 10240; SoftLimit = MAXCLIENTS; MaxConn = SOMAXCONN; MaxWhoResults = 100; debugging = 0; LogLevel = DEFAULT; maxbans.clear(); } void ServerConfig::ClearStack() { include_stack.clear(); } Module* ServerConfig::GetIOHook(int port) { std::map::iterator x = IOHookModule.find(port); return (x != IOHookModule.end() ? x->second : NULL); } bool ServerConfig::AddIOHook(int port, Module* iomod) { if (!GetIOHook(port)) { IOHookModule[port] = iomod; return true; } else { ModuleException err("Port already hooked by another module"); throw(err); return false; } } bool ServerConfig::DelIOHook(int port) { std::map::iterator x = IOHookModule.find(port); if (x != IOHookModule.end()) { IOHookModule.erase(x); return true; } return false; } bool ServerConfig::CheckOnce(char* tag, bool bail, userrec* user) { int count = ConfValueEnum(Config->config_data, tag); if (count > 1) { if (bail) { printf("There were errors in your configuration:\nYou have more than one <%s> tag, this is not permitted.\n",tag); Exit(0); } else { if (user) { WriteServ(user->fd,"There were errors in your configuration:"); WriteServ(user->fd,"You have more than one <%s> tag, this is not permitted.\n",tag); } else { WriteOpers("There were errors in the configuration file:"); WriteOpers("You have more than one <%s> tag, this is not permitted.\n",tag); } } return false; } if (count < 1) { if (bail) { printf("There were errors in your configuration:\nYou have not defined a <%s> tag, this is required.\n",tag); Exit(0); } else { if (user) { WriteServ(user->fd,"There were errors in your configuration:"); WriteServ(user->fd,"You have not defined a <%s> tag, this is required.",tag); } else { WriteOpers("There were errors in the configuration file:"); WriteOpers("You have not defined a <%s> tag, this is required.",tag); } } return false; } return true; } bool NoValidation(const char* tag, const char* value, void* data) { log(DEBUG,"No validation for <%s:%s>",tag,value); return true; } bool ValidateTempDir(const char* tag, const char* value, void* data) { char* x = (char*)data; if (!*x) strlcpy(x,"/tmp",1024); return true; } bool ValidateMaxTargets(const char* tag, const char* value, void* data) { int* x = (int*)data; if ((*x < 0) || (*x > 31)) { log(DEFAULT,"WARNING: value is greater than 31 or less than 0, set to 20."); *x = 20; } return true; } bool ValidateSoftLimit(const char* tag, const char* value, void* data) { int* x = (int*)data; if ((*x < 1) || (*x > MAXCLIENTS)) { log(DEFAULT,"WARNING: value is greater than %d or less than 0, set to %d.",MAXCLIENTS,MAXCLIENTS); *x = MAXCLIENTS; } return true; } bool ValidateMaxConn(const char* tag, const char* value, void* data) { int* x = (int*)data; if (*x > SOMAXCONN) log(DEFAULT,"WARNING: value may be higher than the system-defined SOMAXCONN value!"); if (!*x) *x = SOMAXCONN; return true; } bool ValidateDnsTimeout(const char* tag, const char* value, void* data) { int* x = (int*)data; if (!*x) *x = 5; return true; } bool ValidateDnsServer(const char* tag, const char* value, void* data) { char* x = (char*)data; if (!*x) { // attempt to look up their nameserver from /etc/resolv.conf log(DEFAULT,"WARNING: not defined, attempting to find working server in /etc/resolv.conf..."); ifstream resolv("/etc/resolv.conf"); std::string nameserver; bool found_server = false; if (resolv.is_open()) { while (resolv >> nameserver) { if ((nameserver == "nameserver") && (!found_server)) { resolv >> nameserver; strlcpy(x,nameserver.c_str(),MAXBUF); found_server = true; log(DEFAULT," set to '%s' as first resolver in /etc/resolv.conf.",nameserver.c_str()); } } if (!found_server) { log(DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!"); strlcpy(x,"127.0.0.1",MAXBUF); } } else { log(DEFAULT,"/etc/resolv.conf can't be opened! Defaulting to nameserver '127.0.0.1'!"); strlcpy(x,"127.0.0.1",MAXBUF); } } return true; } bool ValidateModPath(const char* tag, const char* value, void* data) { char* x = (char*)data; if (!*x) strlcpy(x,MOD_PATH,MAXBUF); return true; } bool ValidateServerName(const char* tag, const char* value, void* data) { char* x = (char*)data; if (!strchr(x,'.')) { log(DEFAULT,"WARNING: '%s' is not a fully-qualified domain name. Changed to '%s%c'",x,x,'.'); charlcat(x,'.',MAXBUF); } //strlower(x); return true; } bool ValidateNetBufferSize(const char* tag, const char* value, void* data) { if ((!Config->NetBufferSize) || (Config->NetBufferSize > 65535) || (Config->NetBufferSize < 1024)) { log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240."); Config->NetBufferSize = 10240; } return true; } bool ValidateMaxWho(const char* tag, const char* value, void* data) { if ((!Config->MaxWhoResults) || (Config->MaxWhoResults > 65535) || (Config->MaxWhoResults < 1)) { log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128."); Config->MaxWhoResults = 128; } return true; } bool ValidateLogLevel(const char* tag, const char* value, void* data) { const char* dbg = (const char*)data; Config->LogLevel = DEFAULT; if (!strcmp(dbg,"debug")) { Config->LogLevel = DEBUG; Config->debugging = 1; } else if (!strcmp(dbg,"verbose")) Config->LogLevel = VERBOSE; else if (!strcmp(dbg,"default")) Config->LogLevel = DEFAULT; else if (!strcmp(dbg,"sparse")) Config->LogLevel = SPARSE; else if (!strcmp(dbg,"none")) Config->LogLevel = NONE; return true; } bool ValidateMotd(const char* tag, const char* value, void* data) { readfile(Config->MOTD,Config->motd); return true; } bool ValidateRules(const char* tag, const char* value, void* data) { readfile(Config->RULES,Config->rules); return true; } /* Callback called before processing the first tag */ bool InitConnect(const char* tag) { log(DEFAULT,"Reading connect classes..."); Config->Classes.clear(); return true; } /* Callback called to process a single tag */ bool DoConnect(const char* tag, char** entries, void** values, int* types) { ConnectClass c; char* allow = (char*)values[0]; /* Yeah, there are a lot of values. Live with it. */ char* deny = (char*)values[1]; char* password = (char*)values[2]; int* timeout = (int*)values[3]; int* pingfreq = (int*)values[4]; int* flood = (int*)values[5]; int* threshold = (int*)values[6]; int* sendq = (int*)values[7]; int* recvq = (int*)values[8]; int* localmax = (int*)values[9]; int* globalmax = (int*)values[10]; if (*allow) { c.host = allow; c.type = CC_ALLOW; c.pass = password; c.registration_timeout = *timeout; c.pingtime = *pingfreq; c.flood = *flood; c.threshold = *threshold; c.sendqmax = *sendq; c.recvqmax = *recvq; c.maxlocal = *localmax; c.maxglobal = *globalmax; if (c.maxlocal == 0) c.maxlocal = 3; if (c.maxglobal == 0) c.maxglobal = 3; if (c.threshold == 0) { c.threshold = 1; c.flood = 999; log(DEFAULT,"Warning: Connect allow line '%s' has no flood/threshold settings. Setting this tag to 999 lines in 1 second.",c.host.c_str()); } if (c.sendqmax == 0) c.sendqmax = 262114; if (c.recvqmax == 0) c.recvqmax = 4096; if (c.registration_timeout == 0) c.registration_timeout = 90; if (c.pingtime == 0) c.pingtime = 120; Config->Classes.push_back(c); } else { c.host = deny; c.type = CC_DENY; Config->Classes.push_back(c); log(DEBUG,"Read connect class type DENY, host=%s",deny); } return true; } /* Callback called when there are no more tags */ bool DoneConnect(const char* tag) { log(DEBUG,"DoneConnect called for tag: %s",tag); return true; } /* Callback called before processing the first tag */ bool InitULine(const char* tag) { Config->ulines.clear(); return true; } /* Callback called to process a single tag */ bool DoULine(const char* tag, char** entries, void** values, int* types) { char* server = (char*)values[0]; log(DEBUG,"Read ULINE '%s'",server); Config->ulines.push_back(server); return true; } /* Callback called when there are no more tags */ bool DoneULine(const char* tag) { return true; } /* Callback called before processing the first tag */ bool InitModule(const char* tag) { old_module_names.clear(); new_module_names.clear(); added_modules.clear(); removed_modules.clear(); for (std::vector::iterator t = Config->module_names.begin(); t != Config->module_names.end(); t++) { old_module_names.push_back(*t); } return true; } /* Callback called to process a single tag */ bool DoModule(const char* tag, char** entries, void** values, int* types) { char* modname = (char*)values[0]; new_module_names.push_back(modname); return true; } /* Callback called when there are no more tags */ bool DoneModule(const char* tag) { // now create a list of new modules that are due to be loaded // and a seperate list of modules which are due to be unloaded for (std::vector::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++) { bool added = true; for (std::vector::iterator old = old_module_names.begin(); old != old_module_names.end(); old++) { if (*old == *_new) added = false; } if (added) added_modules.push_back(*_new); } for (std::vector::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++) { bool removed = true; for (std::vector::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++) { if (*newm == *oldm) removed = false; } if (removed) removed_modules.push_back(*oldm); } return true; } /* Callback called before processing the first tag */ bool InitMaxBans(const char* tag) { Config->maxbans.clear(); return true; } /* Callback called to process a single tag */ bool DoMaxBans(const char* tag, char** entries, void** values, int* types) { char* channel = (char*)values[0]; int* limit = (int*)values[1]; Config->maxbans[channel] = *limit; return true; } /* Callback called when there are no more tags. */ bool DoneMaxBans(const char* tag) { return true; } void ServerConfig::Read(bool bail, userrec* user) { char debug[MAXBUF]; /* Temporary buffer for debugging value */ char* data[12]; /* Temporary buffers for reading multiple occurance tags into */ void* ptr[12]; /* Temporary pointers for passing to callbacks */ int r_i[12]; /* Temporary array for casting */ int rem = 0, add = 0; /* Number of modules added, number of modules removed */ std::ostringstream errstr; /* String stream containing the error output */ /* These tags MUST occur and must ONLY occur once in the config file */ static char* Once[] = { "server", "admin", "files", "power", "options", "pid", NULL }; /* These tags can occur ONCE or not at all */ static InitialConfig Values[] = { {"options", "softlimit", &this->SoftLimit, DT_INTEGER, ValidateSoftLimit}, {"options", "somaxconn", &this->MaxConn, DT_INTEGER, ValidateMaxConn}, {"server", "name", &this->ServerName, DT_CHARPTR, ValidateServerName}, {"server", "description", &this->ServerDesc, DT_CHARPTR, NoValidation}, {"server", "network", &this->Network, DT_CHARPTR, NoValidation}, {"admin", "name", &this->AdminName, DT_CHARPTR, NoValidation}, {"admin", "email", &this->AdminEmail, DT_CHARPTR, NoValidation}, {"admin", "nick", &this->AdminNick, DT_CHARPTR, NoValidation}, {"files", "motd", &this->motd, DT_CHARPTR, ValidateMotd}, {"files", "rules", &this->rules, DT_CHARPTR, ValidateRules}, {"power", "diepass", &this->diepass, DT_CHARPTR, NoValidation}, {"power", "pauseval", &this->DieDelay, DT_INTEGER, NoValidation}, {"power", "restartpass", &this->restartpass, DT_CHARPTR, NoValidation}, {"options", "prefixquit", &this->PrefixQuit, DT_CHARPTR, NoValidation}, {"die", "value", &this->DieValue, DT_CHARPTR, NoValidation}, {"options", "loglevel", &debug, DT_CHARPTR, ValidateLogLevel}, {"options", "netbuffersize", &this->NetBufferSize, DT_INTEGER, ValidateNetBufferSize}, {"options", "maxwho", &this->MaxWhoResults, DT_INTEGER, ValidateMaxWho}, {"options", "allowhalfop", &this->AllowHalfop, DT_BOOLEAN, NoValidation}, {"dns", "server", &this->DNSServer, DT_CHARPTR, ValidateDnsServer}, {"dns", "timeout", &this->dns_timeout, DT_INTEGER, ValidateDnsTimeout}, {"options", "moduledir", &this->ModPath, DT_CHARPTR, ValidateModPath}, {"disabled", "commands", &this->DisabledCommands, DT_CHARPTR, NoValidation}, {"options", "operonlystats", &this->OperOnlyStats, DT_CHARPTR, NoValidation}, {"options", "customversion", &this->CustomVersion, DT_CHARPTR, NoValidation}, {"options", "hidesplits", &this->HideSplits, DT_BOOLEAN, NoValidation}, {"options", "hidebans", &this->HideBans, DT_BOOLEAN, NoValidation}, {"options", "hidewhois", &this->HideWhoisServer, DT_CHARPTR, NoValidation}, {"options", "operspywhois", &this->OperSpyWhois, DT_BOOLEAN, NoValidation}, {"options", "tempdir", &this->TempDir, DT_CHARPTR, ValidateTempDir}, {"pid", "file", &this->PID, DT_CHARPTR, NoValidation}, {NULL} }; /* These tags can occur multiple times, and therefore they have special code to read them * which is different to the code for reading the singular tags listed above. */ static MultiConfig MultiValues[] = { {"connect", {"allow", "deny", "password", "timeout", "pingfreq", "flood", "threshold", "sendq", "recvq", "localmax", "globalmax", NULL}, {DT_CHARPTR, DT_CHARPTR, DT_CHARPTR, DT_INTEGER, DT_INTEGER, DT_INTEGER, DT_INTEGER, DT_INTEGER, DT_INTEGER, DT_INTEGER, DT_INTEGER}, InitConnect, DoConnect, DoneConnect}, {"uline", {"server", NULL}, {DT_CHARPTR}, InitULine,DoULine,DoneULine}, {"banlist", {"chan", "limit", NULL}, {DT_CHARPTR, DT_INTEGER}, InitMaxBans, DoMaxBans, DoneMaxBans}, {"module", {"name", NULL}, {DT_CHARPTR}, InitModule, DoModule, DoneModule}, {"badip", {"reason", "ipmask", NULL}, {DT_CHARPTR, DT_CHARPTR}, InitXLine, DoZLine, DoneXLine}, {"badnick", {"reason", "nick", NULL}, {DT_CHARPTR, DT_CHARPTR}, InitXLine, DoQLine, DoneXLine}, {"badhost", {"reason", "host", NULL}, {DT_CHARPTR, DT_CHARPTR}, InitXLine, DoKLine, DoneXLine}, {"exception", {"reason", "host", NULL}, {DT_CHARPTR, DT_CHARPTR}, InitXLine, DoELine, DoneXLine}, {"type", {"name", "classes", NULL}, {DT_CHARPTR, DT_CHARPTR}, InitTypes, DoType, DoneClassesAndTypes}, {"class", {"name", "commands", NULL}, {DT_CHARPTR, DT_CHARPTR}, InitClasses, DoClass, DoneClassesAndTypes}, {NULL} }; include_stack.clear(); /* Load and parse the config file, if there are any errors then explode */ /* Make a copy here so if it fails then we can carry on running with an unaffected config */ ConfigDataHash newconfig; if (this->LoadConf(newconfig, CONFIG_FILE, errstr)) { /* If we succeeded, set the ircd config to the new one */ Config->config_data = newconfig; /* int c = 1; std::string last; for(ConfigDataHash::const_iterator i = this->config_data.begin(); i != this->config_data.end(); i++) { c = (i->first != last) ? 1 : c+1; last = i->first; std::cout << "[" << i->first << " " << c << "/" << this->config_data.count(i->first) << "]" << std::endl; for(KeyValList::const_iterator j = i->second.begin(); j != i->second.end(); j++) std::cout << "\t" << j->first << " = " << j->second << std::endl; std::cout << "[/" << i->first << " " << c << "/" << this->config_data.count(i->first) << "]" << std::endl; } */ } else { log(DEFAULT, "There were errors in your configuration:\n%s", errstr.str().c_str()); if (bail) { /* Unneeded because of the log() aboive? */ printf("There were errors in your configuration:\n%s",errstr.str().c_str()); Exit(0); } else { std::string errors = errstr.str(); std::string::size_type start; unsigned int prefixlen; start = 0; /* ":Config->ServerName NOTICE user->nick :" */ prefixlen = strlen(Config->ServerName) + strlen(user->nick) + 11; if (user) { WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick); while(start < errors.length()) { WriteServ(user->fd, "NOTICE %s :%s",user->nick, errors.substr(start, 510 - prefixlen).c_str()); start += 510 - prefixlen; } } else { WriteOpers("There were errors in the configuration file:"); while(start < errors.length()) { WriteOpers(errors.substr(start, 360).c_str()); start += 360; } } return; } } /* Check we dont have more than one of singular tags, or any of them missing */ for (int Index = 0; Once[Index]; Index++) if (!CheckOnce(Once[Index],bail,user)) return; /* Read the values of all the tags which occur once or not at all, and call their callbacks. */ for (int Index = 0; Values[Index].tag; Index++) { int* val_i = (int*) Values[Index].val; char* val_c = (char*) Values[Index].val; switch (Values[Index].datatype) { case DT_CHARPTR: /* Assuming MAXBUF here, potentially unsafe */ ConfValue(this->config_data, Values[Index].tag, Values[Index].value, 0, val_c, MAXBUF); break; case DT_INTEGER: ConfValueInteger(this->config_data, Values[Index].tag, Values[Index].value, 0, *val_i); break; case DT_BOOLEAN: *val_i = ConfValueBool(this->config_data, Values[Index].tag, Values[Index].value, 0); break; case DT_NOTHING: break; } Values[Index].validation_function(Values[Index].tag, Values[Index].value, Values[Index].val); } /* Claim memory for use when reading multiple tags */ for (int n = 0; n < 12; n++) data[n] = new char[MAXBUF]; /* Read the multiple-tag items (class tags, connect tags, etc) * and call the callbacks associated with them. We have three * callbacks for these, a 'start', 'item' and 'end' callback. */ /* XXX - Make this use ConfValueInteger and so on */ for (int Index = 0; MultiValues[Index].tag; Index++) { MultiValues[Index].init_function(MultiValues[Index].tag); int number_of_tags = ConfValueEnum(this->config_data, MultiValues[Index].tag); for (int tagnum = 0; tagnum < number_of_tags; tagnum++) { for (int valuenum = 0; MultiValues[Index].items[valuenum]; valuenum++) { ConfValue(this->config_data, MultiValues[Index].tag, MultiValues[Index].items[valuenum], tagnum, data[valuenum], MAXBUF); switch (MultiValues[Index].datatype[valuenum]) { case DT_CHARPTR: ptr[valuenum] = data[valuenum]; break; case DT_INTEGER: r_i[valuenum] = atoi(data[valuenum]); ptr[valuenum] = &r_i[valuenum]; break; case DT_BOOLEAN: r_i[valuenum] = ((*data[valuenum] == tolower('y')) || (*data[valuenum] == tolower('t')) || (*data[valuenum] == '1')); ptr[valuenum] = &r_i[valuenum]; break; default: break; } } MultiValues[Index].validation_function(MultiValues[Index].tag, (char**)MultiValues[Index].items, ptr, MultiValues[Index].datatype); } MultiValues[Index].finish_function(MultiValues[Index].tag); } /* Free any memory we claimed */ for (int n = 0; n < 12; n++) delete[] data[n]; // write once here, to try it out and make sure its ok WritePID(Config->PID); log(DEFAULT,"Done reading configuration file, InspIRCd is now starting."); /* If we're rehashing, let's load any new modules, and unload old ones */ if (!bail) { ServerInstance->stats->BoundPortCount = BindPorts(false); if (!removed_modules.empty()) for (std::vector::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++) { if (ServerInstance->UnloadModule(removing->c_str())) { WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str()); if (user) WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str()); rem++; } else { if (user) WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ServerInstance->ModuleError()); } } if (!added_modules.empty()) for (std::vector::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++) { if (ServerInstance->LoadModule(adding->c_str())) { WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str()); if (user) WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str()); add++; } else { if (user) WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ServerInstance->ModuleError()); } } log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),(unsigned long)add,(unsigned long)added_modules.size()); } } void Exit(int status) { if (Config->log_file) fclose(Config->log_file); send_error("Server shutdown."); exit (status); } void Killed(int status) { if (Config->log_file) fclose(Config->log_file); send_error("Server terminated."); exit(status); } char* CleanFilename(char* name) { char* p = name + strlen(name); while ((p != name) && (*p != '/')) p--; return (p != name ? ++p : p); } void Rehash(int status) { WriteOpers("Rehashing config file %s due to SIGHUP",CleanFilename(CONFIG_FILE)); fclose(Config->log_file); OpenLog(NULL,0); Config->Read(false,NULL); FOREACH_MOD(I_OnRehash,OnRehash("")); } void Start() { printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__); printf("(C) ChatSpike Development team.\033[0m\n\n"); printf("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om\033[0m\n"); printf("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n"); printf("Name concept:\t\t\033[1;32mLord_Zathras\033[0m\n\n"); } void WritePID(const std::string &filename) { ofstream outfile(filename.c_str()); if (outfile.is_open()) { outfile << getpid(); outfile.close(); } else { printf("Failed to write PID-file '%s', exiting.\n",filename.c_str()); log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str()); Exit(0); } } void SetSignals() { signal (SIGALRM, SIG_IGN); signal (SIGHUP, Rehash); signal (SIGPIPE, SIG_IGN); signal (SIGTERM, Exit); signal (SIGSEGV, Error); } bool DaemonSeed() { int childpid; if ((childpid = fork ()) < 0) return (ERROR); else if (childpid > 0) { /* We wait a few seconds here, so that the shell prompt doesnt come back over the output */ sleep(6); exit (0); } setsid (); umask (007); printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid()); rlimit rl; if (getrlimit(RLIMIT_CORE, &rl) == -1) { log(DEFAULT,"Failed to getrlimit()!"); return false; } else { rl.rlim_cur = rl.rlim_max; if (setrlimit(RLIMIT_CORE, &rl) == -1) log(DEFAULT,"setrlimit() failed, cannot increase coredump size."); } return true; } /* Make Sure Modules Are Avaliable! * (BugFix By Craig.. See? I do work! :p) * Modified by brain, requires const char* * to work with other API functions */ /* XXX - Needed? */ bool FileExists (const char* file) { FILE *input; if ((input = fopen (file, "r")) == NULL) { return(false); } else { fclose (input); return(true); } } bool ServerConfig::LoadConf(ConfigDataHash &target, const char* filename, std::ostringstream &errorstream) { std::ifstream conf(filename); std::string line; char ch; long linenumber; bool in_tag; bool in_quote; bool in_comment; linenumber = 1; in_tag = false; in_quote = false; in_comment = false; /* Check if the file open failed first */ if (!conf) { errorstream << "LoadConf: Couldn't open config file: " << filename << std::endl; return false; } /* Fix the chmod of the file to restrict it to the current user and group */ chmod(filename,0600); for (unsigned int t = 0; t < include_stack.size(); t++) { if (std::string(filename) == include_stack[t]) { errorstream << "File " << filename << " is included recursively (looped inclusion)." << std::endl; return false; } } /* It's not already included, add it to the list of files we've loaded */ include_stack.push_back(filename); /* Start reading characters... */ while(conf.get(ch)) { /* * Here we try and get individual tags on separate lines, * this would be so easy if we just made people format * their config files like that, but they don't so... * We check for a '<' and then know the line is over when * we get a '>' not inside quotes. If we find two '<' and * no '>' then die with an error. */ if((ch == '#') && !in_quote) in_comment = true; if(((ch == '\n') || (ch == '\r')) && in_quote) { errorstream << "Got a newline within a quoted section, this is probably a typo: " << filename << ":" << linenumber << std::endl; return false; } switch(ch) { case '\n': linenumber++; case '\r': in_comment = false; case '\0': continue; case '\t': ch = ' '; } if(in_comment) continue; line += ch; if(ch == '<') { if(in_tag) { if(!in_quote) { errorstream << "Got another opening < when the first one wasn't closed: " << filename << ":" << linenumber << std::endl; return false; } } else { if(in_quote) { errorstream << "We're in a quote but outside a tag, interesting. " << filename << ":" << linenumber << std::endl; return false; } else { // errorstream << "Opening new config tag on line " << linenumber << std::endl; in_tag = true; } } } else if(ch == '"') { if(in_tag) { if(in_quote) { // errorstream << "Closing quote in config tag on line " << linenumber << std::endl; in_quote = false; } else { // errorstream << "Opening quote in config tag on line " << linenumber << std::endl; in_quote = true; } } else { if(in_quote) { errorstream << "Found a (closing) \" outside a tag: " << filename << ":" << linenumber << std::endl; } else { errorstream << "Found a (opening) \" outside a tag: " << filename << ":" << linenumber << std::endl; } } } else if(ch == '>') { if(!in_quote) { if(in_tag) { // errorstream << "Closing config tag on line " << linenumber << std::endl; in_tag = false; /* * If this finds an then ParseLine can simply call * LoadConf() and load the included config into the same ConfigDataHash */ if(!this->ParseLine(target, line, linenumber, errorstream)) return false; line.clear(); } else { errorstream << "Got a closing > when we weren't inside a tag: " << filename << ":" << linenumber << std::endl; return false; } } } } return true; } bool ServerConfig::LoadConf(ConfigDataHash &target, const std::string &filename, std::ostringstream &errorstream) { return this->LoadConf(target, filename.c_str(), errorstream); } bool ServerConfig::ParseLine(ConfigDataHash &target, std::string &line, long linenumber, std::ostringstream &errorstream) { std::string tagname; std::string current_key; std::string current_value; KeyValList results; bool got_name; bool got_key; bool in_quote; got_name = got_key = in_quote = false; // std::cout << "ParseLine(data, '" << line << "', " << linenumber << ", stream)" << std::endl; for(std::string::iterator c = line.begin(); c != line.end(); c++) { if(!got_name) { /* We don't know the tag name yet. */ if(*c != ' ') { if(*c != '<') { tagname += *c; } } else { /* We got to a space, we should have the tagname now. */ if(tagname.length()) { got_name = true; } } } else { /* We have the tag name */ if(!got_key) { /* We're still reading the key name */ if(*c != '=') { if(*c != ' ') { current_key += *c; } } else { /* We got an '=', end of the key name. */ got_key = true; } } else { /* We have the key name, now we're looking for quotes and the value */ if(*c == '"') { if(!in_quote) { /* We're not already in a quote. */ in_quote = true; } else { /* Leaving quotes, we have the value */ results.push_back(KeyVal(current_key, current_value)); // std::cout << "<" << tagname << ":" << current_key << "> " << current_value << std::endl; in_quote = false; got_key = false; if((tagname == "include") && (current_key == "file")) { if(!this->DoInclude(target, current_value, errorstream)) return false; } current_key.clear(); current_value.clear(); } } else { if(in_quote) { current_value += *c; } } } } } /* Finished parsing the tag, add it to the config hash */ target.insert(std::pair (tagname, results)); return true; } bool ServerConfig::DoInclude(ConfigDataHash &target, const std::string &file, std::ostringstream &errorstream) { std::string confpath; std::string newfile; std::string::size_type pos; confpath = CONFIG_FILE; newfile = file; for (std::string::iterator c = newfile.begin(); c != newfile.end(); c++) { if (*c == '\\') { *c = '/'; } } if (file[0] != '/') { if((pos = confpath.find("/inspircd.conf")) != std::string::npos) { /* Leaves us with just the path */ newfile = confpath.substr(0, pos) + std::string("/") + newfile; } else { errorstream << "Couldn't get config path from: " << confpath << std::endl; return false; } } return LoadConf(target, newfile, errorstream); } bool ServerConfig::ConfValue(ConfigDataHash &target, const char* tag, const char* var, int index, char* result, int length) { std::string value; bool r = ConfValue(target, std::string(tag), std::string(var), index, value); strlcpy(result, value.c_str(), length); return r; } bool ServerConfig::ConfValue(ConfigDataHash &target, const std::string &tag, const std::string &var, int index, std::string &result) { ConfigDataHash::size_type pos = index; if((pos >= 0) && (pos < target.count(tag))) { ConfigDataHash::const_iterator iter = target.find(tag); for(int i = 0; i < index; i++) iter++; for(KeyValList::const_iterator j = iter->second.begin(); j != iter->second.end(); j++) { if(j->first == var) { result = j->second; return true; } } } else if(pos == 0) { log(DEBUG, "No <%s> tags in config file.", tag.c_str()); } else { log(DEBUG, "ConfValue got an out-of-range index %d, there are only %d occurences of %s", pos, target.count(tag), tag.c_str()); } return false; } bool ServerConfig::ConfValueInteger(ConfigDataHash &target, const char* tag, const char* var, int index, int &result) { return ConfValueInteger(target, std::string(tag), std::string(var), index, result); } bool ServerConfig::ConfValueInteger(ConfigDataHash &target, const std::string &tag, const std::string &var, int index, int &result) { std::string value; std::istringstream stream; bool r = ConfValue(target, tag, var, index, value); stream.str(value); if(!(stream >> result)) return false; return r; } bool ServerConfig::ConfValueBool(ConfigDataHash &target, const char* tag, const char* var, int index) { return ConfValueBool(target, std::string(tag), std::string(var), index); } bool ServerConfig::ConfValueBool(ConfigDataHash &target, const std::string &tag, const std::string &var, int index) { std::string result; if(!ConfValue(target, tag, var, index, result)) return false; return ((result == "yes") || (result == "true") || (result == "1")); } int ServerConfig::ConfValueEnum(ConfigDataHash &target, const char* tag) { return target.count(tag); } int ServerConfig::ConfValueEnum(ConfigDataHash &target, const std::string &tag) { return target.count(tag); } int ServerConfig::ConfVarEnum(ConfigDataHash &target, const char* tag, int index) { return ConfVarEnum(target, std::string(tag), index); } int ServerConfig::ConfVarEnum(ConfigDataHash &target, const std::string &tag, int index) { ConfigDataHash::size_type pos = index; if((pos >= 0) && (pos < target.count(tag))) { ConfigDataHash::const_iterator iter = target.find(tag); for(int i = 0; i < index; i++) iter++; return iter->second.size(); } else if(pos == 0) { log(DEBUG, "No <%s> tags in config file.", tag.c_str()); } else { log(DEBUG, "ConfVarEnum got an out-of-range index %d, there are only %d occurences of %s", pos, target.count(tag), tag.c_str()); } return 0; } /** This will bind a socket to a port. It works for UDP/TCP. * If a hostname is given to bind to, the function will first * attempt to resolve the hostname, then bind to the IP the * hostname resolves to. This is a blocking lookup blocking for * a maximum of one second before it times out, using the DNS * server specified in the configuration file. */ bool BindSocket(int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr) { memset(&server,0,sizeof(server)); struct in_addr addy; bool resolved = false; char resolved_addr[128]; if (*addr == '*') *addr = 0; if (*addr && !inet_aton(addr,&addy)) { /* If they gave a hostname, bind to the IP it resolves to */ if (CleanAndResolve(resolved_addr, addr, true)) { inet_aton(resolved_addr,&addy); log(DEFAULT,"Resolved binding '%s' -> '%s'",addr,resolved_addr); server.sin_addr = addy; resolved = true; } else { log(DEFAULT,"WARNING: Could not resolve '%s' to an IP for binding to on port %d",addr,port); return false; } } server.sin_family = AF_INET; if (!resolved) { if (!*addr) { server.sin_addr.s_addr = htonl(INADDR_ANY); } else { server.sin_addr = addy; } } server.sin_port = htons(port); if (bind(sockfd,(struct sockaddr*)&server,sizeof(server)) < 0) { return false; } else { log(DEBUG,"Bound port %s:%d",*addr ? addr : "*",port); if (listen(sockfd, Config->MaxConn) == -1) { log(DEFAULT,"ERROR in listen(): %s",strerror(errno)); return false; } else { NonBlocking(sockfd); return true; } } } // Open a TCP Socket int OpenTCPSocket() { int sockfd; int on = 1; struct linger linger = { 0 }; if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0) { log(DEFAULT,"Error creating TCP socket: %s",strerror(errno)); return (ERROR); } else { setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */ linger.l_onoff = 1; linger.l_linger = 1; setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &linger,sizeof(linger)); return (sockfd); } } bool HasPort(int port, char* addr) { for (int count = 0; count < ServerInstance->stats->BoundPortCount; count++) { if ((port == Config->ports[count]) && (!strcasecmp(Config->addrs[count],addr))) { return true; } } return false; } int BindPorts(bool bail) { char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF]; sockaddr_in client,server; int clientportcount = 0; int BoundPortCount = 0; if (!bail) { int InitialPortCount = ServerInstance->stats->BoundPortCount; log(DEBUG,"Initial port count: %d",InitialPortCount); for (int count = 0; count < Config->ConfValueEnum(Config->config_data, "bind"); count++) { Config->ConfValue(Config->config_data, "bind", "port", count, configToken, MAXBUF); Config->ConfValue(Config->config_data, "bind", "address", count, Addr, MAXBUF); Config->ConfValue(Config->config_data, "bind", "type", count, Type, MAXBUF); if (((!*Type) || (!strcmp(Type,"clients"))) && (!HasPort(atoi(configToken),Addr))) { // modules handle server bind types now Config->ports[clientportcount+InitialPortCount] = atoi(configToken); if (*Addr == '*') *Addr = 0; strlcpy(Config->addrs[clientportcount+InitialPortCount],Addr,256); clientportcount++; log(DEBUG,"NEW binding %s:%s [%s] from config",Addr,configToken, Type); } } int PortCount = clientportcount; if (PortCount) { for (int count = InitialPortCount; count < InitialPortCount + PortCount; count++) { if ((openSockfd[count] = OpenTCPSocket()) == ERROR) { log(DEBUG,"Bad fd %d binding port [%s:%d]",openSockfd[count],Config->addrs[count],Config->ports[count]); return ERROR; } if (!BindSocket(openSockfd[count],client,server,Config->ports[count],Config->addrs[count])) { log(DEFAULT,"Failed to bind port [%s:%d]: %s",Config->addrs[count],Config->ports[count],strerror(errno)); } else { /* Associate the new open port with a slot in the socket engine */ ServerInstance->SE->AddFd(openSockfd[count],true,X_LISTEN); BoundPortCount++; } } return InitialPortCount + BoundPortCount; } else { log(DEBUG,"There is nothing new to bind!"); } return InitialPortCount; } for (int count = 0; count < Config->ConfValueEnum(Config->config_data, "bind"); count++) { Config->ConfValue(Config->config_data, "bind", "port", count, configToken, MAXBUF); Config->ConfValue(Config->config_data, "bind", "address", count, Addr, MAXBUF); Config->ConfValue(Config->config_data, "bind", "type", count, Type, MAXBUF); if ((!*Type) || (!strcmp(Type,"clients"))) { // modules handle server bind types now Config->ports[clientportcount] = atoi(configToken); // If the client put bind "*", this is an unrealism. // We don't actually support this as documented, but // i got fed up of people trying it, so now it converts // it to an empty string meaning the same 'bind to all'. if (*Addr == '*') *Addr = 0; strlcpy(Config->addrs[clientportcount],Addr,256); clientportcount++; log(DEBUG,"Binding %s:%s [%s] from config",Addr,configToken, Type); } } int PortCount = clientportcount; for (int count = 0; count < PortCount; count++) { if ((openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR) { log(DEBUG,"Bad fd %d binding port [%s:%d]",openSockfd[BoundPortCount],Config->addrs[count],Config->ports[count]); return ERROR; } if (!BindSocket(openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count])) { log(DEFAULT,"Failed to bind port [%s:%d]: %s",Config->addrs[count],Config->ports[count],strerror(errno)); } else { /* well we at least bound to one socket so we'll continue */ BoundPortCount++; } } /* if we didn't bind to anything then abort */ if (!BoundPortCount) { log(DEFAULT,"No ports bound, bailing!"); printf("\nERROR: Could not bind any of %d ports! Please check your configuration.\n\n", PortCount); return ERROR; } return BoundPortCount; }